Finishing robot for coffins


The UNI-CLEVER L/C finishing robot for coffins is a continuous painting device with a longitudinal loading direction for coffins. Its structure includes main, loading and unloading conveyors, all based on a chain mechanism designed specifically for transporting coffins.
In addition, the finishing robot is equipped with a hydraulic scissor lift that allows painting coffins at their entire height, and thanks to the additional use of the coffin positioning system, it is possible to precisely and precisely place the coffin on the loading conveyor.

Finishing machine dedicated to:

After appropriate retrofitting, the painting robot can be used in the following industries:

  • Coffin elements (e.g. coffin legs, crosses)
  • Spatial elements and solids
  • Boards and countertops

What makes the L/C model coffin robot stand out?

What’s unique in the UNI-CLEVER L/C painting robot is the longitudinal direction of loading of coffins. This solution allows to combine a finishing robot with a dryer to create a painting line.

Painting line solutions

Thanks to the continuous construction of the painting robot, it can be configured with other UNISON devices to create a painting line.

pozycjoner do trumien

Coffin positioning system

The use of a positioner during the finishing process allows to place the coffin in a convenient position and prepare it for the varnishing process.

podnośnik nożycowy do trumien

Hydraulic scissor lift

Thanks to the use of a lift, it is possible to varnish the coffin along its entire height, which significantly shortens the varnishing time and improves the finishing process.

Painting robot for coffins UNI-CLEVER model L/C

  • The finishing robot is designed for continuous operation and enables the integration of its work with other devices, creating a painting line
  • The finishing device has a separate loading and unloading zone located outside the device and a painting zone located inside the device
  • The operation of the device is integrated with the operation of the input and output conveyors
  • The painting robot is equipped with a main chain conveyor (in the painting zone), which is responsible for transferring the elements to the painting zone and to any other devices.
  • A hydraulic scissor lift installed in the painting booth allows the full height of elements to be varnished during one loading.
  • The operation of paint guns placed in a closed cabin of a paint robot is possible in five axes (X, Y, Z, A, B)
  • It is possible to set various operating modes to optimize the efficiency of the entire painting process
  • It is possible to place the device in existing painting booths, using a previously installed air supply and exhaust system
  • The painting robot is intended for the application of virtually all types of painting materials available on the market, including such as:
    • Stains: water-based, nitro-based, spirit-based, solvent-based
    • Varnishes: polyurethane, acrylic, nitro, water-based and water-based UV
    • Paints and enamels
    • Liquid adhesives used for gluing “finish” foils
  • It is possible to apply paint materials using low and/or high-pressure technology in order to select the best application parameters for a given paint material
  • The case of the device is made of a steel frame with a welded structure to ensure the highest stiffness and durability of the device during dynamic operation of the painting head for many years of operation
  • The frame structure of the device is covered with paint with increased resistance to paint materials and cleaning agents recommended for use in UNISON devices
  • The compact design of the painting robot along with accessories and equipment minimizes the amount of space necessary for its installation and ongoing operation
  • Placing the painting head in a closed painting cabin increases the operator’s comfort, limits the spread of odors accompanying the painting process and allows you to control the air flow in the painting zone
  • The large glazing area of the painting booth allows ongoing monitoring of the painting process
  • The automatic gate (loading/unloading) increases the cleanliness inside the painting booth and reduces the amount of contamination in the painting zone and around the device
  • The service door facilitates the operator’s access to the interior of the painting robot and is integrated with an emergency shutdown system if the door is opened during operation.
  • Inside the closed painting booth there is a detail painting zone with a painting head located above the main conveyor
  • Lighting is installed in the internal ceiling of the cabin, which allows the operator to observe the operation of the painting head and monitor the painting process
  • In the painting zone there is also a main conveyor on which details to be painted and extraction filters are placed
  • The coffin transport system in the painting robot is based on chain conveyors in order to use the self-cleaning properties of the chain during its operation and the possibility of placing details of significant weight and/or dimensions
  • Chain conveyors are responsible for moving the coffins both in the painting zone and between individual devices
  • Chain conveyors are characterized by high durability and reliability during long-term operation
  • The coffin scissor lift is located inside the painting robot cabin
  • The movement of the scissor lift is carried out by a hydraulic system
  • The hydraulic scissor lift allows you to paint the entire coffin (box and lid) during one loading of the coffin into the painting robot
  • Painting the entire coffin during one loading speeds up the painting operations and improves its quality compared to the processes of painting coffins in separate elements.
  • It is possible to install up to 6 paint circuits without circulation of paint material or up to 3 paint circuits with circulation to enable various configurations of paint systems
  • The diameter of the painting pipes is optimally selected to suit the painting processes and the painting materials used
  • It is possible to use the so-called systems quick color change and small low-pressure tanks installed at a short distance from the guns to save time when changing the color or type of varnish and to minimize losses of varnish materials during their change
  • It is possible to integrate mixing and dosing systems for individual paint components (2K and 3K systems) to select their operating mode from the operator panel of the painting robot
  • The painting head located in the painting zone allows for various painting processes
  • The painting head is designed to mount various types of automatic painting guns (pneumatic, hydrodynamic, hydrodynamic with air cover, etc.)
  • It is possible to install up to 5 painting guns on the painting head in order to carry out as many painting processes as possible without the need to dismantle the guns
  • Automatic paint guns are designed for applying paint materials with set operating parameters, minimizing their consumption, reducing the time of the painting process and the consumption of extraction filters
  • It is possible to mount paint guns in various ways (e.g. movable/rotary or fixed guns) to best suit the painting processes
  • It is possible to apply the paint material in different directions in relation to the painted surface, e.g. painting “in advance”, “back” or perpendicular to the surface
  • Paint guns with the paint head can perform programmable movements, moving linearly along the X, Y, Z axes and rotating around their own vertical (A) and horizontal (B) axes
  • Pressure regulators installed close to the spray guns enable precise setting of the working pressure and minimize pressure drops in the pneumatic lines
  • The service position of the painting head enables ongoing maintenance of the painting equipment by the operator
Number of painting heads1 [pc.]
Paint lines from the connections on the paint head to the gunsYES*
Pneumatic cables for controlling paint gunsYES*
* if the painting equipment is delivered by UNISON. Otherwise – within the scope of implementation by the Ordering Party.
  • When operating paint guns, up to 5 drive axes of the device are used
  • Movements of guns and spray head
    • X axis – movement of the painting head along the main working axis of the device, i.e. along the direction of movement of the elements
    • Y axis – movement of the painting head transversely to the direction of movement of the elements
    • Z axis – movement of the painting head in the vertical direction
    • A axis – rotation of the spray guns on the spray head around the Z axis
    • B axis – tilt of the spray guns in the vertical plane
  • The individual axes are driven by servo drives with smooth speed control
  • It is possible to adjust the speed of the painting head every 1 [m/min] and the operating angles of the guns every 1 degree (depending on the given axis)
  • The speed of the head and the operating angles of the guns are determined from the device’s operator panel
The speed of the painting head along the X axisto 90 [m/min]
The speed of the painting head along the Y axisto 90 [m/min]
The speed of the painting head along the Z axisto 30 [m/min]
The angle of rotation of the spray guns relative to the A axis360 [degrees]
The angle of rotation of the spray guns relative to the B axis120 [degrees]
Number of simultaneously driven axes during painting1 to 5
  • The main operating parameters of the device are controlled via the operator screen
  • The size of the operator screen with a diagonal of approx. 15″ allows you to view all necessary information and parameters related to the operation of the painting robot
  • The functionality of the operator screen ensures quick, simple and intuitive operation of the painting robot
  • The operator panel is located near the painting zone, on the loading side of the device
  • It is possible to place the operator panel on a side of the device convenient for the operator (on the left or right when looking from the loading zone), in order to optimize communication around the device and accelerate operator activities
  • The PLC controller is responsible for the current operation of the device and its individual modules
  • The PLC controller functions as an industrial computer, controls individual elements and subassemblies of the device and synchronizes their work
  • Intuitive software created by the UNISON team enables easy and quick operation of the device and ensures repeatability of painting processes
  • It is possible to save and select various painting programs that are responsible for the process of painting the side surfaces of details or horizontal surfaces of elements to be painted in order to simplify operator work and limit the possibility of interference in the previously established painting process
  • The device is usually operated by 1-2 trained people who are able to effectively operate the device and conduct the painting process, significantly reducing employment costs
  • The final number of staff depends on the intensity of operation of the device, the operating mode of the device and the operator skills of the employees operating the device
    Service and inspection doors facilitate daily operation of the device by the operator and maintain cleanliness inside the cabin, and enable quick replacement of supply filters
  • After connecting the device to the Internet connection, there is a possibility of quick service and diagnostic support by the UNISON team (connection to the Internet connection on the Ordering Party’s side)
  • Optionally, the device can be equipped with an intermediate element (tray) adapted to attach e.g. coffin legs or crosses
Installation side of the operator panel (determined when looking at the device from the loading sideLeft/Right
Finishing programmes Painting the entire coffin (with the so-called spacer)
Painting the entire coffin (without the so-called spacer)
Painting the coffin lid
Painting the bottom of the coffin
Painting the top plate
Painting of rectangular coffins
Varnishing of hexagonal coffins
Varnishing of octagonal coffins
Painting coffins with a sloping roof

Preferred number of operators1-2 people, e.g. device operator + assistant
(depending on the expected performance of the device and work organization)
  • The painting device allows to manage the supply air flow in order to carry out the painting process in controlled and repeatable quality
  • The air intake located in the upper part of the finishing robot supplies the device with fresh air, usually taken from the painting production area, which significantly reduces the costs of its preparation
  • A blower fan with adjustable performance is located in the “clean zone” between the air intake and first-stage filters and the second-stage supply filters, in the upper part of the finishing robot
  • The location of the fan in the “clean zone” extends its durability and reduces the frequency of servicing
  • The efficiency of the blower fan is controlled by coupling the fan motor with the inverter
  • The efficiency of the blower fan is regulated by the robot’s operator panel
  • It is possible to easily set overpressure, underpressure or balanced pressure (in relation to the pressure prevailing at the place of installation of the device) depending on the needs of the painting process
Supply fan power2 x 0,75 [kW]
Supply fan efficiency11.800 [m3/h]
Performance regulationmotor with inverter
  • The painting robot is equipped with a two-stage supply air filtration system to effectively clean the fresh air from solid impurities
  • The supply air filtration system is installed above the painting zone, in the upper part of the painting device
  • The first stage of filtration is performed by a cassette filter placed between the air intake and the blower fan
  • The second stage of filtration is carried out through non-woven filters placed in the ceiling part, inside the finishing booth
  • The structure of the filtration system allows for easy and quick replacement of supply filters
  • The class of supply filters is adapted to the painting process implemented in the company
First stage of filtration (filter at the air intake)Non-woven filter with cassette structure
Second stage of filtration (ceiling filter)Filter made of synthetic non-woven fabric
  • The air exhaust system is responsible for collecting contaminated air from the painting zone
  • Air extraction is performed by an exhaust fan
  • A variable capacity exhaust fan allows to set the optimal airflow for a given painting process
  • Fan performance regulation is achieved by controlling the operation of the motor with an inverter
  • The efficiency of the exhaust fan is regulated from the device’s operator panel
  • The exhaust fan is installed next to the painting machine
  • By adjusting the fans (supply and exhaust), it is possible to set overpressure, underpressure or balanced pressure (in relation to the pressure in the painting area) depending on the needs of the painting process.
Exhaust fan power2 [pcs.] x 2,2 [kW] = 4,4 [kW]
Exhaust fan performance2 [pcs.] x 7.200 [m3/h] = 14.400 [m3/h]
Fan performance regulationMotor with inverter
  • The exhaust air filtration system is based on a dry filtration system
  • Filters are placed on both sides of the main conveyor, inside the painting booth, to effectively clean the air of paint dust and discharge paint fumes to the air ejector
  • The painting robot is equipped with a two-stage exhaust air filtration system
  • The first stage of filtration is carried out by a cardboard, pleated, perforated filter (Andrea type), placed directly next to the painting zone
  • The second stage of filtration is performed by a “paint stop” non-woven filter placed under the Andrea filter
  • Forced air circulation, achieved by the mutual operation of the air blowing and extraction systems, has a positive effect on the quality of the painting process
  • The device’s electrical switchboard and control cabinet are integrated and incorporated into the device to save space around the device.
  • Minimizing the number of electrical and connecting cables between the painting robot and the switchgear and control cabinet increases the safety of the operation of the device
  • The electrical switchboard equipment and automation elements responsible for the operation of the device come from renowned international manufacturers
  • The coffin positioning system is available as an additional option – a separate element/device
  • The coffin positioning system automatically determines the position of the coffin along the X and Y axes and corrects its position in relation to the transport system
  • The positioning of the coffins takes place in front of the robot, immediately before the coffins enter the painting cabin
  • The positioner’s work is closely integrated with the robot’s work
  • The positioning system is powered pneumatically (compressed air)
  • The positioning system is adapted to various weights and dimensions of coffins (according to the robot’s operating parameters)
  • It is possible to adjust the pressure of the positioning elements in order to select the best positioning parameters and precisely position the coffin on the transporter
  • The positioning system is turned on and off in automatic mode or triggered manually from the robot’s operator panel

Technical and operational parameters of the finishing robot

Wymiary i parametry pola lakierniczego

Długość pola roboczego2.500 [mm]
Szerokość pola roboczego1.000 [mm]
Masa elementów na polu roboczymdo 100 [kg]
Ilość elementów na polu roboczym1 szt.

Dimensions of painted elements

Length1.700 - 2.500 [mm]
Widthto 900 [mm]
Heightto 700 [mm]

Finishing robot dimensions

Lenght (without conveyors)5.025 [mm]
Widht (without conveyors)2.585 [mm]
Height3.080 [mm]

Minimum room dimensions for machine installation

Lenght11.000 [mm]
Width5.000 [mm]
Height3.300 [mm]

Finishing machine weight

Weight6.120 [kg]*
* weight may change depending on machine configuration

Compressed air connection

Pressure6-8 [bar]
Compressed air consumption about 100 [l/min.] (without painting guns)

Electrical connection

Electric voltage3 x 400 VAC / 50 Hz
Installed power19,75 [kW]* (depends on the final configuration of the machine)
Estimated electricity consumptionat the level of 40-60% of the installed power (depending on the operating mode and operating conditions of the device)
Security typeC

Additional equipment

  • Dedicated painting gun for staining/varnishing the inner edge of the coffin
  • Replaceable holder for mounting a second set of spray guns
  • Integration with the barcode system
  • A system of replaceable low-pressure tanks mounted near painting guns
  • Automatic cleaning system for painting guns
  • Painting equipment (e.g. automatic paint guns, low and high pressure pumps, pressure tanks, etc.)

Technical drawings


Other painting machines dedicated to


robot lakierniczy do trumien wyposażony w obrotnicę


The painting robot is equipped with a table with a turntable, which makes it possible to unload a painted coffin and load an unvarnished one, while simultaneously painting the coffin located in the painting zone.

robot lakierniczy do trumien wzdłużny załadunek bokiem


The painting robot is designed for continuous operation with a transverse loading direction for coffins. It is equipped with chain conveyors adapted to transport coffins. Thanks to the use of a hydraulic lift, it is possible to paint coffins over their entire height.

linia lakiernicza do trumien

Painting line for coffins

The coffin painting line consists of a  painting robot, a dryer, conveyors, and additional elements (e.g. a grinder).

Ask about the machine