Pastry printing equipment

Abstract

The invention relates to the technical field of pastry processing, and discloses pastry printing equipment which comprises a mounting table, a printing mechanism, a printing mechanism and a printing mechanism. The conveying belt is installed at the material preparing area of the installation table, the conveying belt is used for conveying pastries and installed at the printing area, the supporting frame is fixedly installed at the material preparing area of the installation table, the rotating shaft is rotationally installed on the supporting frame, the two printing arms are fixedly installed on the rotating shaft, and the rotating piece is connected with the rotating shaft. The lifting part is in transmission connection with the rotating shaft and used for driving the rotating shaft to move up and down in the axial direction of the rotating shaft, the supporting base is installed on the installation table in a reciprocating sliding mode, the cleaning brush is installed on the supporting base, and the driving mechanism is used for driving the supporting base to be close to or away from the printing material barrel. And when the rotating shaft drives the printing arm to rotate, the printing head printed with pastries firstly makes contact with the cleaning brush and then rotates to the position above the printing barrel. According to the printing head, flour in the grain grooves of the printing head can be effectively removed.

Description

Technical Field

[0001] This application relates to the technical field of pastry processing, and in particular to a pastry printing device. Background Art

[0002] In the field of automated pastry production, the printing process is an important link to achieve product appearance standardization. To improve the continuous production efficiency of patterned pastries such as jujube paste cakes and jujube paste cookies, a rotary multi-station printing device is generally used. By symmetrically arranging two printing arms on the same rotating shaft, the alternating docking of the printing head and the ink cartridge is achieved by the rotation and lifting movement of the rotating shaft. Specifically, when the rotating shaft descends, the printing head of the first printing arm imprints the jujube paste cake on the conveyor belt, and at the same time, the printing head of the second printing arm dips into the ink cartridge to complete ink replenishment; after the rotating shaft ascends and resets, it rotates 180°, so that the two printing arms exchange positions, and the printing and dipping actions are performed in a cycle.

[0003] However, it is found in actual production that when the printing head contacts the jujube paste cake, due to the anti-sticking flour scattered on the surface of the cake embryo, some flour particles will adhere to the groove of the printing head pattern. When the printing head with residual flour dips into the ink cartridge again, the flour and the thick ink are mixed to form local deposits, resulting in a decrease in the ink adhesion amount in the pattern, which directly affects the clarity and color saturation of the printed pattern. Summary of the Invention

[0004] To solve the above technical problems, this application provides a pastry printing device.

[0005] This application provides a pastry printing device, adopting the following technical solutions: A pastry printing device, comprising: An installation table, provided with a printing area and a material preparation area; Two ink cartridges, installed at the material preparation area of the installation table, and the two ink cartridges correspond to the two printing arms one by one, An intermittently moving conveyor belt, used for conveying pastries, installed at the printing area, A support frame, fixedly installed at the material preparation area of the installation table, A rotating shaft, rotatably installed on the support frame, Two printing arms, fixedly installed on the rotating shaft, and a 90° angle is formed between the two printing arms, A printing head, fixedly installed on the printing arm, used for contacting pastries, A rotating member, connected to the rotating shaft, installed on the support frame, used to control the rotation of the rotating shaft around its own central axis, so that the two printing arms are alternately located above the conveyor belt, The lifting member is fixedly installed on the support frame and is in transmission connection with the rotating shaft, and is used to drive the rotating shaft to move up and down along its axis. When the lifting member drives the rotating shaft to move downward, one of the printing heads presses down to contact the pastry, and the other printing head dips the printing material in the corresponding printing material cylinder. The support base is reciprocatingly and slidably installed at the material preparation area of the installation table. The cleaning brush is installed on the support base. The driving mechanism is used to drive the support base to approach or move away from the printing material cylinder. When the rotating shaft drives the printing arm to rotate, the printing head that has finished printing the pastry first contacts the cleaning brush and then rotates above the printing material cylinder.

[0006] By adopting the above technical solution, through the physical separation of the printing area and the material preparation area, the regional independence of the printing operation and the printing material replenishment is realized. The two printing material cylinders correspond to the printing arms one by one, and in cooperation with the alternating printing mechanism, continuous production can be achieved (while one printing arm is operating, the other printing arm replenishes the printing material). The intermittently moving conveyor belt ensures that the pastry is briefly stationary when it is conveyed to the printing area, so that the printing head can fully contact the surface of the pastry. When the lifting member drives the entire rotating shaft to move downward, the dual actions of the printing head contacting the pastry to apply pressure for printing (the adjustable range of the pressure is 2-5 N) and dipping the raw material in the printing material cylinder are synchronously realized, simplifying the complexity of the mechanical structure; the driving mechanism controls the movement of the support base to ensure that after the printing head finishes printing, it first contacts the cleaning brush and then enters the printing material cylinder to dip the material, effectively removing the flour in the texture grooves of the residual printing head. When the printing head that has just replenished the printing material rotates with the rotating shaft, there is always a distance from the cleaning brush, so that the cleaning brush only cleans the printing head that needs to be cleaned.

[0007] Optionally, the support base rotates around the rotating shaft. When the support base rotates around the rotating shaft to below the printing material cylinder, the cleaning brush is located above the printing material cylinder.

[0008] By adopting the above technical solution, the support base rotates around the rotating shaft, so that the cleaning brush always moves along the rotation trajectory of the printing head, ensuring that the contact position between the cleaning brush and the printing head is basically the same each time after printing (the position error ≤ 0.2 mm), and improving the cleaning stability.

[0009] Optionally, a guide rail is installed at the material preparation area of the installation table. The support base is slidably installed on the guide rail. The two ends of the guide rail are closed ends, and the closed ends respectively extend to be close to the conveyor belt.

[0010] By adopting the above technical solution, the closed design of the two ends of the guide rail limits the sliding range of the support base, so that when the support base reciprocates on the guide rail, the support base does not affect the normal operation of the conveyor belt.

[0011] Optionally, a support rod is fixedly installed on the support base, a rotating seat is rotatably installed on the support rod, the cleaning brush is fixedly installed on the rotating seat. When the support base passes below the printing ink cylinder, the rotating seat contacts the outer wall of the printing ink cylinder, and the rotating seat rotates around the support rod as the rotation center. A reset mechanism is installed on the support rod for driving the rotating seat to return to the initial position when the rotating seat disengages from the outer wall of the printing ink cylinder.

[0012] By adopting the above technical solution, the cleaning brush is stably installed through the rotating seat, and the cleaning brush changes its position along with the movement of the support base, realizing the cleaning of the two printing heads alternately. When the rotating seat contacts the outer wall of the printing ink cylinder, it rotates adaptively, so that the printing ink cylinder does not affect the movement of the rotating seat along with the movement of the support base. When the rotating seat disengages from the outer wall of the printing ink cylinder, the reset mechanism drives the rotating seat to return to the initial position, ensuring that the printing head first contacts the cleaning brush after completing printing, so that the cleaning position of the cleaning brush remains unchanged.

[0013] Optionally, the reset mechanism includes two torsion springs. A sleeve rod adapted to the torsion spring is installed on the support rod, and the torsion spring is sleeved on the corresponding sleeve rod; a limiting block is further arranged on the support rod, and the two end parts of the torsion spring respectively abut against the limiting block and the rotating seat; when the rotating seat rotates, one end part of one of the torsion springs is squeezed by the rotating seat, and the other end part of the other torsion spring disengages from contact with the rotating seat.

[0014] By adopting the above technical solution, the two torsion springs are symmetrically arranged at both ends of the sleeve rod. When the rotating seat squeezes one-sided torsion spring to store energy, the other torsion spring disengages from contact, forming a one-way reset moment. The setting of the two torsion springs enables the rotating seat to reset no matter which direction it rotates around the support rod. When the rotating seat drives the cleaning brush to rotate, the cleaning brush no longer passes through the printing ink cylinder, and the impurities on the cleaning brush are not easily fallen into the printing ink cylinder. And during the process of the rotating seat resetting, the elastic force of the torsion spring drives the rotating seat to reset quickly. During the rotation and resetting process of the rotating seat, the impurities on the cleaning brush are affected by the centrifugal force, and the impurities on the cleaning brush are thrown out, which can also achieve the self-cleaning effect on the cleaning brush.

[0015] Optionally, the rotating seat is in extrusion contact with the outer wall of the printing ink cylinder, and the wall of the printing ink cylinder is made of silicone or rubber material, so that the outer wall of the printing ink cylinder can be deformed under external force extrusion and return to its original shape without external force.

[0016] By adopting the above technical solution, when the printing head dips downward, it squeezes the printing material in the printing cylinder downward. The printing material in the printing cylinder is thick. After the printing material is pressed downward into a pit, the printing head moves upward away from the printing material. In the process of the driving mechanism driving the cleaning brush to change position for cleaning, the rotating seat moves along with the support seat and squeezes and contacts the outer wall of the printing cylinder, causing the printing cylinder to deform and squeeze the printing material. In the process of the printing cylinder automatically recovering after the pressure is released, the printing material also automatically recovers, and the pit pressed out by the printing material is significantly reduced, so that the printing head can fully contact the printing material when dipping the printing material.

[0017] Optionally, the rotating seat is a disc structure, and the bristles of the cleaning brush are distributed along the radial direction of the rotating seat.

[0018] By adopting the above technical solution, the disc-shaped rotating seat cooperates with the radially distributed bristles, so that the cleaning brush forms surface contact with the printing head when in contact, and the efficiency of cleaning the printing head per unit time is improved.

[0019] Optionally, a limit rod is installed on the support seat, and the limit rod and the support rod are arranged parallel to each other. The limit rod rotates with the support seat and slides and squeezes the outer wall of the printing cylinder.

[0020] By adopting the above technical solution, the limiting rod and the rotating seat double squeeze the printing material cylinder, thereby increasing the deformation degree of the printing material in the printing material cylinder and destroying the shape of the printing material being pressed down into a pit to a greater extent.

[0021] Optionally, the driving mechanism includes: A gear ring is rotatably mounted on the mounting platform, and the gear ring is arranged with the rotating shaft as the rotation center; A gear meshing with the inner wall of the gear ring; A driving source is transmission-connected to the gear and is used to drive the gear to rotate.

[0022] By adopting the above technical solution, the gear ring rotates around the rotating shaft, so that the movement of the support seat and the rotation of the rotating shaft do not interfere with each other, thereby avoiding interference between the cleaning action and the printing process.

[0023] Optionally, a cleaning roller is detachably mounted on the guide rail to clean residual printing material on the cleaning brush.

[0024] By adopting the above technical solution, the flour and printing material remaining on the cleaning brush can be scraped off when the support seat reciprocates, thereby extending the service life of the bristles.

[0025] In summary, the present application includes at least one of the following beneficial effects: 1. It can realize the dual actions of printing by contacting the printing head with the cake to apply pressure (adjustable pressure range 2-5N) and dipping the printing material from the printing tube. The printing head that has completed printing can be cleaned first and then dipped in the material, which improves the printing efficiency and the cleaning effect of the printing head; 2. During the rotation of the rotating seat, it squeezes the printing material cylinder and then leaves it, causing the printing material to deform and return to its original state. Each time the printing head contacts the printing material, it can fully contact the printing material. During the rotation and reset process of the rotating seat, the self-cleaning effect of the cleaning brush can also be achieved. Brief Description of the Drawings

[0026] Figure 1 is the overall structural schematic diagram of the embodiment of the present application; Figure 2 is the top view of the embodiment of the present application; Figure 3 is the schematic diagram showing the specific structure on the material preparation area in the embodiment of the present application; Figure 4 is the top view of the embodiment of the present application showing the adaptive rotation of the rotating seat in contact with the printing material cylinder and causing the printing material cylinder to deform; Figure 5 is the schematic diagram showing the specific structure of the reset mechanism in the embodiment of the present application.

[0027] Description of the Reference Numerals: 100, mounting table; 110, printing area; 120, material preparation area; 130, guide rail; 200, printing material cylinder; 300, conveyor belt; 400, support frame; 410, rotating shaft; 420, printing arm; 430, printing head; 440, rotating member; 450, lifting member; 500, support seat; 510, cleaning brush; 520, support rod; 521, limit block; 530, rotating seat; 531, convex block; 540, limit rod; 600, driving mechanism; 610, gear ring; 620, gear; 700, reset mechanism; 710, torsion spring; 720, sleeve rod; 800, cleaning roller; 810, air blowing pipe. Detailed Embodiment

[0028] The following is a further detailed description of the present application in conjunction with the attached Figure 1 - attached Figure 5 to further illustrate the present application.

[0029] The embodiment of the present application discloses a pastry printing device. Referring to Figure 1 , a pastry printing device mainly includes a mounting table 100, a printing material cylinder 200, a conveyor belt 300, a support frame 400, a rotating shaft 410, a printing arm 420, a printing head 430, a rotating member 440, a lifting member 450, a support seat 500, a cleaning brush 510, and a driving mechanism 600.

[0030] Referring to Figure 2, the installation table 100 is divided into a printing area 110 and a material preparation area 120. The printing area 110 is used for the printing operation of pastries, and the material preparation area 120 is used for installing the printing ink cylinder 200 and other auxiliary equipment. Two printing ink cylinders 200 are installed in the material preparation area 120, corresponding one-to-one with the two printing arms 420, ensuring that each printing arm 420 can dip into the corresponding printing ink. The conveyor belt 300 is installed in the printing area 110 and is used for intermittently conveying pastries. The intermittent movement of the conveyor belt 300 ensures that the pastries are stationary in the printing area 110 for a short time, facilitating the printing operation.

[0031] Refer to Figure 1 , the support frame 400 is fixedly installed in the material preparation area 120 and is used to support the rotating shaft 410, the rotating member 440 and the lifting member 450. The printing ink cylinder 200 is fixedly connected to the support frame 400 through a fixing rod, and there is a gap between the lower end surface of the printing ink cylinder 200 and the upper surface of the installation table 100. The rotating shaft 410 is rotatably installed on the support frame 400, and the two printing arms 420 are fixedly installed on the rotating shaft 410, forming a 90° angle. The rotating shaft 410 is controlled to rotate by the rotating member 440, so that the two printing arms 420 are alternately located above the conveyor belt 300. The printing head 430 is fixedly installed on the printing arm 420 and is used to contact the pastry and apply the print. The pattern design of the printing head 430 can be customized according to actual needs.

[0032] The rotating member 440 uses a motor, and the output shaft of the motor is coaxially and fixedly connected to the rotating shaft 410. The lifting member 450 uses a servo electric cylinder and is fixedly installed on the support frame 400. The motor is fixedly connected to the mounting seat, and the lead screw of the servo electric cylinder is fixedly connected to the mounting seat. The servo electric cylinder drives the rotating shaft 410 to move up and down along its axis, realizing the pressing down and lifting of the printing head 430.

[0033] Refer to Figure 1 and Figure 3A guide rail 130 is installed at the material preparation area 120 of the mounting platform 100. The guide rail 130 is a ring structure with a gap. Both ends of the guide rail 130 are closed ends, and both ends extend close to the conveyor belt 300. The support seat 500 is reciprocatingly slidably installed on the guide rail 130 of the material preparation area 120, and the cleaning brush 510 is installed on the support seat 500. The support seat 500 is driven to approach or move away from the printing material cylinder 200 by the driving mechanism 600. The driving mechanism 600 includes a ring gear 610, a gear 620 and a driving source. The driving source is a motor. The motor is installed on the lower surface of the mounting platform 100, and the motor output shaft and the gear 620 are coaxially fixedly connected. The ring gear 610 is rotatably installed on the mounting platform 100, and is set with the rotating shaft 410 as the rotation center. The gear 620 is meshed with the inner wall of the ring gear 610, and the driving source is connected to the gear 620 by transmission. The driving gear 620 rotates, thereby driving the ring gear 610 and the support seat 500 to move. The support base 500 is fixedly connected to the outer wall of the gear ring 610 through a rod, and the support base 500 rotates around the rotating shaft 410 so that the moving path of the cleaning brush 510 is the same as the moving path of the printing side wall. The space between the printing material cylinder 200 and the mounting platform 100 is for the support base 500 to pass through.

[0034] Further, see Figure 3 A support rod 520 is fixedly mounted on the support seat 500, and a rotating seat 530 is rotatably mounted on the support rod 520 through a bearing, and a cleaning brush 510 is fixedly mounted on the rotating seat 530. The rotating seat 530 is a disc structure, and the cleaning brush 510 is made of nylon, and the cleaning brush 510 is distributed along the radial direction of the disc.

[0035] Reference Figure 4 Before the support seat 500 passes over the printing cylinder 200, the rotating seat 530 first contacts the outer wall of the printing cylinder 200 and rotates adaptively, and the cleaning brush 510 rotates along with the rotation of the rotating seat 530, so that the cleaning brush 510 does not need to pass over the printing cylinder 200, and impurities on the cleaning brush 510 are not easy to fall into the printing cylinder 200.

[0036] Reference Figure 5 When the rotating seat 530 leaves the printing material cylinder 200, a reset mechanism 700 is installed on the support rod 520, so that the rotating seat 530 rotates back to the starting position, the cleaning brush 510 is in place, and the printing head 430 is waiting to pass through the cleaning brush 510 and contact the cleaning brush 510. The reset mechanism 700 includes two torsion springs 710 and a sleeve rod 720. The torsion spring 710 is sleeved on the sleeve rod 720, and the support rod 520 is symmetrically installed with two limit blocks 521, one end of the torsion spring 710 is fixedly connected to the limit block 521, and a protrusion 531 extends from the lower surface of the rotating seat 530, which is used to contact one end of the torsion spring 710.

[0037] When the rotating seat 530 is pressed and rotates clockwise, one side torsion spring 710 is compressed and stores energy, and the other side torsion spring 710 is disengaged from the rotating seat 530; after the rotating seat 530 is disengaged from the printing material cylinder 200, the compressed torsion spring 710 releases energy, driving the rotating seat 530 to return counterclockwise. One ends of the two torsion springs 710 are both in contact with the rotating seat 530. The setting of the two torsion springs 710 enables the rotating seat 530 to return to its original position whether it rotates clockwise or counterclockwise. Moreover, when the rotating seat 530 leaves the printing material cylinder 200, the torsion spring 710 releases energy to make the rotating speed of the rotating seat 530 for resetting relatively fast. When the cleaning brush 510 rotates, part of the impurities on the cleaning brush 510 are thrown out of the cleaning brush 510 by the centrifugal force, and the cleaning brush 510 realizes a certain degree of self-cleaning effect.

[0038] When the printing head 430 presses down to dip the printing material, a depression deformation occurs on the upper surface of the printing material. The wall of the printing material cylinder 200 is made of silica gel or rubber material, and has the characteristics of being deformable under external force extrusion and restoring its shape without external force. When the rotating seat 530 rotates adaptively blocked by the printing material cylinder 200, the rotating seat 530 presses the printing material cylinder 200, applying a lateral pressure to the cylinder body of the printing material cylinder 200, so that the printing material is also extruded upward, accelerating the rebound of the printing material depression.

[0039] A limiting rod 540 is installed on the support seat 500 and is arranged parallel to the support rod 520. The limiting rod 540 rotates with the support seat 500 and is slidably extruded by the outer wall of the printing material cylinder 200, causing the printing material cylinder 200 to deform symmetrically and also increasing the deformation degree of the printing material in the printing material cylinder 200.

[0040] Refer to Figure 3 On the guide rail 130, a cleaning roller 800 is detachably installed, which is used to remove the residual flour and printing material on the cleaning brush 510 and extend the service life of the bristles. The cleaning roller 800 is rotatably installed above the middle of the guide rail 130. When the cleaning brush 510 passes through the cleaning roller 800, the cleaning roller 800 rolls to clean the impurities. A blowing pipe 810 is also installed at the stock preparation area 120 of the installation table 100. The blowing pipe 810 is connected to a blowing device, and the blowing pipe 810 blows air on the cleaning brush 510 to blow away the impurities on the cleaning brush 510.

[0041] The implementation principle of a pastry printing device in an embodiment of the present application is as follows: The lifting member 450 drives the rotating shaft 410 to move downward, and the printing head 430 is synchronously pressed down to contact the pastry and apply printing. At the same time, the printing head 430 of the other printing arm 420 is immersed in the corresponding printing material cylinder 200 to supplement the printing material; During the lifting process of the printing head 430, the driving mechanism 600 drives the support seat 500 to reciprocate on the guide rail 130 through the cooperation of the gear ring 610, the gear 620 and the driving source, so as to realize the alternating contact between the cleaning brush 510 and the printing head 430. After the support seat 500 abuts against the end of the guide rail 130 and the reset mechanism 700 drives the cleaning brush 510 to be in place, the rotating member 440 drives the rotating shaft 410 to rotate, and the printing head 430 contacts the cleaning brush 510 and is cleaned. When the rotating seat 530 is in rotational contact with the printing material cylinder 200, one of the printing heads 430 is located above the printing material cylinder 200, the cleaning brush 510 and the printing head 430 are not in contact and the printing material cylinder 200 and the printing material are pressed. The silicone or rubber material of the printing material cylinder 200 ensures that the side wall of the printing material can return to its original state after being pressed, so that the printing head 430 can fully contact the printing material every time. Through the above specific implementation manners, the pastry printing equipment of the present application realizes the efficient printing and cleaning of the printing head 430, improves the clarity and color saturation of the printed pattern, and at the same time ensures the continuity and stability of production.

[0042] The above are all the preferred embodiments of the present application, and the protection scope of the present application is not limited thereby. Therefore, all equivalent changes made according to the structure, shape and principle of the present application shall be covered within the protection scope of the present application.

Claims

1. A cake printing device, characterized in that: include: A mounting platform (100) is provided with a printing area (110) and a material preparation area (120); Two printing material cylinders (200) are installed in the material preparation area (120) of the installation platform (100). The intermittently moving conveyor belt (300) is used to convey cakes and is installed at the printing area (110). The support frame (400) is fixedly mounted at the material preparation area (120) of the mounting platform (100). The rotating shaft (410) is rotatably mounted on the supporting frame (400). The two printing arms (420) are fixedly mounted on the rotating shaft (410), and a 90° angle is formed between the two printing arms (420). The two printing material cylinders (200) correspond to the two printing arms (420) one by one. The printing head (430) is fixedly mounted on the printing arm (420) and is used for contacting the cakes. The rotating member (440) is connected to the rotating shaft (410) and is installed on the supporting frame (400) and is used to control the rotating shaft (410) to rotate about its own central axis so that the two printing arms (420) are alternately located above the conveyor belt (300). The lifting member (450) is fixedly mounted on the support frame (400) and is drivingly connected to the rotating shaft (410) for driving the rotating shaft (410) to move up and down along its axial direction. When the lifting member (450) drives the rotating shaft (410) to move downward, one of the printing heads (430) is pressed down to contact the cake, and the other printing head (430) dips into the printing material in the corresponding printing material cylinder (200). The support seat (500) is reciprocatingly slidably mounted at the material preparation area (120) of the mounting platform (100). A cleaning brush (510) is mounted on the support base (500). The driving mechanism (600) is used to drive the support seat (500) to move closer to or farther away from the printing cylinder (200); when the rotating shaft (410) drives the printing arm (420) to rotate, the printing head (430) that has printed the cake first contacts the cleaning brush (510) and then rotates to above the printing cylinder (200).

2. A pastry printing device according to claim 1, characterized in that: The support seat (500) rotates with the rotating shaft (410) as the rotation center. When the support seat (500) rotates with the rotating shaft (410) as the rotation center and passes under the printing cylinder (200), the cleaning brush (510) is higher than the printing cylinder (200).

3. A pastry printing device according to claim 2, characterized in that: A guide rail (130) is installed at the material preparation area (120) of the installation platform (100), and the support seat (500) is slidably installed on the guide rail (130). Both ends of the guide rail (130) are closed ends, and the closed ends respectively extend to near the conveyor belt (300).

4. A cake printing device according to claim 3, characterized in that: The support seat (500) is fixedly mounted with a support rod (520), and a rotating seat (530) is rotatably mounted on the support rod (520). The cleaning brush (510) is fixedly mounted on the rotating seat (530). When the support seat (500) passes under the printing cylinder (200), the rotating seat (530) contacts the outer wall of the printing cylinder (200), and the rotating seat (530) rotates with the support rod (520) as the rotation center. A reset mechanism (700) is mounted on the support rod (520) for driving the rotating seat (530) to return to its initial position when the rotating seat (530) is separated from the outer wall of the printing cylinder (200).

5. A cake printing device according to claim 4, characterized in that: The reset mechanism (700) comprises two torsion springs (710); a sleeve rod (720) matching the torsion spring (710) is mounted on the support rod (520); the torsion spring (710) is sleeved on the corresponding sleeve rod (720); a limit block (521) is also provided on the support rod (520); two ends of the torsion spring (710) are respectively in contact with the limit block (521) and the rotating seat (530); when the rotating seat (530) rotates, the end of one of the torsion springs (710) is squeezed by the rotating seat (530), and the end of the other torsion spring (710) is out of contact with the rotating seat (530).

6. A cake printing device according to claim 4, characterized in that: The rotating seat (530) is in compression contact with the outer wall of the printing material cylinder (200), and the cylinder wall of the printing material cylinder (200) is made of silicone or rubber material, so that the outer wall of the printing material cylinder (200) can be deformed when squeezed by external force, and restore its shape when no external force is applied.

7. A cake printing device according to claim 6, characterized in that: The rotating seat (530) is a disc structure, and the bristles of the cleaning brush (510) are distributed along the radial direction of the rotating seat (530).

8. A cake printing device according to claim 6, characterized in that: A limiting rod (540) is installed on the support seat (500), the limiting rod (540) and the support rod (520) are arranged parallel to each other, and the limiting rod (540) rotates with the support seat (500) and slides and squeezes the outer wall of the printing material cylinder (200).

9. A cake printing device according to claim 6, characterized in that: The driving mechanism (600) comprises: A ring gear (610) is rotatably mounted on the mounting platform (100), and the ring gear (610) is arranged with the rotating shaft (410) as the rotation center; A gear (620) meshing with an inner wall of the gear ring (610); A driving source is drivingly connected to the gear (620) and is used to drive the gear (620) to rotate.

10. A cake printing device according to claim 3, characterized in that: A cleaning roller (800) is detachably mounted on the guide rail (130) and is used to remove residual printing material on the cleaning brush (510).

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