A polishing mechanism for a mold tray
By designing a grinding mechanism for molded trays, the deformation of a return spring generates continuous contact force, enabling automated grinding of molded trays. This solves the problems of high labor intensity and difficulty in quality control associated with manual grinding, thereby improving production efficiency and precision.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- HENAN PAIMO MASCH EQUIP CO LTD
- Filing Date
- 2025-07-23
- Publication Date
- 2026-06-05
AI Technical Summary
The existing manual polishing method for molded trays is labor-intensive, difficult to control polishing quality, and inefficient.
A molding tray grinding mechanism was designed, including a robot, a chamfering machine, a clamping component and a bonding component. It utilizes the deformation of a return spring to generate continuous contact force, thereby achieving automated grinding of the molding tray. It adapts to the undulations of the tray surface and sidewalls, avoiding sudden pressure changes or detachment caused by rigid contact.
It has enabled automated grinding of molded pallets, reducing labor intensity, improving grinding quality and production efficiency, and ensuring grinding precision.
Smart Images

Figure CN224322864U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of molded pallet polishing technology, specifically to a molded pallet polishing mechanism. Background Technology
[0002] Molded pallets are currently the most common items in the logistics field, used for stacking or shipping goods. They are convenient to use, low in cost, and widely used.
[0003] To maintain the flatness of molded pallets, they must undergo a grinding process before leaving the factory to remove burrs and make the edges smoother. Current manual grinding methods require manual hand-held grinding machines to grind the pallet edges for extended periods. This is labor-intensive and cannot guarantee grinding precision, thus affecting product quality and hindering the improvement of enterprise production efficiency. Utility Model Content
[0004] This utility model addresses the shortcomings of existing technologies by providing a molded tray grinding mechanism to solve the problems mentioned in the background art, such as high labor intensity, difficulty in controlling grinding quality, and low efficiency of manual grinding methods.
[0005] To achieve the above technical objectives, this utility model proposes the following technical solution: a grinding mechanism for a molding tray, comprising a robotic arm, a beveling machine, a pressing component, a bonding component, and a mounting frame. The beveling machine is mounted on the bonding component, the bonding component is mounted at the bottom of the pressing component, the pressing component is mounted below the mounting frame via a mounting plate, and the mounting frame is mounted on the robotic arm via a flange. The pressing component enables the beveling machine's nozzle disc 101 to make close contact with the top edge of the molding tray, and the bonding component enables the beveling machine's guide roller 102 to be in close contact with the side wall of the molding tray.
[0006] Furthermore, the clamping assembly includes guide sleeves located at the four corners of the mounting plate, each guide sleeve containing a vertical guide rod. The fitting assembly is installed at the bottom of the vertical guide rods. A first return spring is fitted inside each vertical guide rod and below the guide sleeve. Each pair of vertical guide rods passes through the mounting plate and connects to a limit block.
[0007] Furthermore, the bonding assembly includes a connecting plate and a guide member disposed at the bottom of the connecting plate. The guide member includes a transverse guide rod disposed perpendicular to the vertical guide rod, and a second reset spring and a slider are fitted inside the transverse guide rod.
[0008] Furthermore, the guide components are in two sets, and the bottom of the two sliders is provided with a support plate. The chamfering machine is installed at the bottom of the support plate by pipe clamps.
[0009] Compared with the prior art, the beneficial effects of this utility model are as follows: The grinding mechanism provided by this utility model is used in conjunction with a robotic arm to realize automated grinding of the molding tray, which solves the problems of high labor intensity, difficulty in controlling grinding quality and low efficiency of manual grinding; by utilizing the deformation of the first and second return springs to generate continuous contact force, the undulations of the surface and sidewall of the molding tray are adaptively compensated, avoiding pressure changes or separation caused by rigid contact, thus ensuring grinding accuracy. Attached Figure Description
[0010] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0011] Figure 2 This is a front structural diagram of the present invention.
[0012] In the diagram, 1. Beveling machine; 101. Gun head disc; 102. Guide roller; 2. Pressing assembly; 3. Bonding assembly; 4. Mounting bracket; 5. Mounting plate; 6. Flange; 7. Guide sleeve; 8. Vertical guide rod; 9. First return spring; 10. Limiting block; 11. Connecting plate; 12. Horizontal guide rod; 13. Second return spring; 14. Slider; 15. Support plate; 16. Pipe clamp. Detailed Implementation
[0013] The following are specific embodiments of the present invention, and the technical solution of the present invention will be further described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.
[0014] This utility model provides a grinding mechanism for a molding tray, including a robot arm, a beveling machine 1, a pressing component 2, a bonding component 3, and a mounting frame 4. The beveling machine 1 is mounted on the bonding component 3, which is mounted on the bottom of the pressing component 2. The pressing component 2 is mounted below the mounting frame 4 via a mounting plate 5. The mounting frame 4 is mounted on the robot arm via a flange 6. By inputting a preset trajectory path into the control system of the robot arm, the beveling machine 1 can be driven to move along the preset trajectory. Under the action of the robot arm, the beveling machine 1 can rotate, lift, and move horizontally. The pressing component 2 causes the beveling machine 1's nozzle disc 101 to make close contact with the top edge of the molding tray. The bonding component 3 causes the beveling machine 1's guide roller 102 to be in close contact with the side wall of the molding tray.
[0015] like Figure 1 and 2As shown, in this embodiment, the robotic arm is existing technology, and its detailed structure will not be described here. The grinding mechanism provided in this application is used in conjunction with the robotic arm. The mounting frame 4 is mounted on the rotating mechanism of the robotic arm via the flange 6. The edge-reducing machine is a pneumatic edge-reducing machine. The robotic arm can drive the edge-reducing machine 1, the pressing component 2, and the bonding component 3 to rotate, lift, and move horizontally. In specific use, the molded molding tray is placed on a horizontal surface at a certain height. The robotic arm controls the edge-reducing machine 1 to fall on the edge of the molding tray to be ground. The robotic arm descends and moves horizontally. Under the action of the pressing component 2 and the bonding component 3, the gun head disc 101 of the edge-reducing machine 1 is in close contact with the edge of the molding tray to be ground, and the guide roller 102 of the edge-reducing machine 1 is always in contact with the side wall of the molding tray. The robotic arm drives the edge-reducing machine 1, the pressing component 2, and the bonding component 3 to move along the outer surface of the molding tray. The cutter on the edge-reducing machine 1 cuts off the burrs at the edge of the molding tray, realizing automated burr removal.
[0016] The clamping assembly 2 includes guide sleeves 7 fixedly installed at the four corners of the mounting plate. Vertical guide rods 8 are slidably installed inside each guide sleeve 7. The fitting assembly 3 is installed at the bottom of the vertical guide rods 8. First reset springs 9 are installed inside each vertical guide rod 8 and below the guide sleeves 7. Each pair of vertical guide rods 8 passes through the mounting plate 5 and is connected to a limit block 10.
[0017] like Figure 2 As shown, after the robotic arm drives the nozzle disc 101 on the beveling machine 1 to contact the edge of the tray, the robotic arm continues to drive the nozzle disc 101 on the beveling machine 1 to move towards the molding tray. During the continued movement, the vertical guide rod 8 moves upward, causing the first return spring 9 to be compressed. The deformation of the first return spring 9 compensates for the undulations on the surface of the molding tray, ensuring that the nozzle disc 101 on the beveling machine 1 and the molding tray always maintain effective contact.
[0018] The bonding assembly 3 includes a connecting plate 11 and guide members disposed at the bottom of the connecting plate 11. The connecting plate 11 is fixedly installed at the bottom of four vertical guide rods 8. The guide members include horizontal guide rods 12 arranged perpendicularly to the vertical guide rods 8. The two ends of the vertical guide rods 12 are fixed to the bottom of the connecting plate 11 by support seats. A second return spring 13 and a slider 14 are fitted inside the horizontal guide rods 12. There are two sets of guide members, which can improve the stability of the movement of the chamfering machine 1. The bottom of the two sliders 14 is bolted to a support plate 15. The chamfering machine 1 is installed at the bottom of the support plate 15 by pipe clamps 16.
[0019] like Figure 1 and 2As shown, after the guide roller 102 on the beveling machine 1 is driven by the robot arm to contact the side wall of the molding tray, the robot arm continues to drive the guide roller 102 on the beveling machine 1 to move towards the side wall of the tray. The second telescopic spring 13 is compressed. During the process of the guide roller 102 on the beveling machine 1 rolling along the side wall of the molding tray, when the side wall of the molding tray is uneven and the guide roller 102 passes through an uneven section, under the action of the second return spring 13, the guide roller 102 on the beveling machine 1 can always maintain effective contact with the side wall of the molding tray, avoiding rigid contact that could lead to sudden pressure changes or separation.
[0020] Operating principle: Place the molding pallet on a plane at a certain height (since the molding pallet made of wood chips is relatively heavy, it does not need to be fixed; otherwise, it needs to be fixed on a plane at a certain height). Based on the size and position of the molding pallet, input the motion trajectory of the beveling machine 1 into the robot's control system. Start the robot, which drives the beveling machine 1, the pressing assembly 2, and the bonding assembly 3 to move towards the pallet until the beveling machine 1's nozzle disc 101 contacts the top edge of the molding pallet and the beveling machine 1's guide roller 102 contacts the side wall of the molding pallet. After contact, the robot continues to drive the beveling machine 1 to move towards the molding pallet, applying a certain pressure to the top and side wall of the molding pallet. During the application of pressure, the vertical... The guide rod 8 moves upward along the guide sleeve 7, compressing the first return spring 9. Similarly, the guide roller 102 of the beveling machine 1 presses against the side wall of the molding tray. After the pressure is applied, the slider 14 slides along the transverse guide rod 12 toward the second return spring 13, compressing the second return spring 13. The robot arm drives the beveling machine 1 to move along the predetermined trajectory. The cutter on the beveling machine 1 cuts the burrs on the molding tray. (When the robot arm drives the beveling machine 1 to the position of the right-angle edge of the molding tray, the rotation mechanism on the robot arm will control the entire grinding mechanism to rotate 90°.) This completes the automatic grinding of the molding tray, reducing the labor intensity of manual grinding and replacing manual grinding with mechanized grinding, thus improving production efficiency. This invention utilizes the deformation of the first return spring 9 and the second return spring 13 to generate a continuous contact force, thereby adaptively compensating for the undulations of the surface and side wall of the molding tray, avoiding pressure abrupt changes or separation caused by rigid contact.
[0021] The specific embodiments described herein are merely illustrative examples illustrating the spirit of this utility model. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to replace them, without departing from the spirit of this utility model or exceeding the scope defined by the appended claims.
Claims
1. A grinding mechanism for molded trays, comprising a robotic arm, characterized in that: It also includes a beveling machine (1), a pressing assembly (2), a bonding assembly (3), and a mounting bracket (4). The beveling machine (1) is mounted on the bonding assembly (3), the bonding assembly (3) is mounted on the bottom of the pressing assembly (2), the pressing assembly (2) is mounted on the bottom of the mounting bracket (4) via a mounting plate (5), and the mounting bracket (4) is mounted on the robot arm via a flange (6). The pressing assembly (2) causes the gun head disc (101) of the beveling machine (1) to make close contact with the top edge of the molding tray, and the bonding assembly (3) causes the guide roller (102) of the beveling machine (1) to make close contact with the side wall of the molding tray.
2. The grinding mechanism for a molded tray according to claim 1, characterized in that: The clamping assembly (2) includes guide sleeves (7) set at the four corners of the mounting plate. Each guide sleeve (7) is provided with a vertical guide rod (8). The fitting assembly (3) is installed at the bottom of the vertical guide rod (8). Each vertical guide rod (8) is fitted with a first reset spring (9) inside the guide sleeve (7) and located below the guide sleeve. Each pair of vertical guide rods (8) passes through the mounting plate (5) and is connected to a limit block (10).
3. The grinding mechanism for a molded tray according to claim 1, characterized in that: The bonding component (3) includes a connecting plate (11) and a guide member disposed at the bottom of the connecting plate (11). The guide member includes a transverse guide rod (12) disposed perpendicular to the vertical guide rod (8). A second reset spring (13) and a slider (14) are fitted inside the transverse guide rod (12).
4. A grinding mechanism for a molded tray according to claim 3, characterized in that: The guide is in two sets, and the bottom of the two sliders (14) is provided with a support plate (15). The chamfering machine (1) is installed at the bottom of the support plate (15) through a pipe clamp (16).