Automatic edge grinding mechanism of mould pressing tray

Abstract

The utility model provides an automatic edging mechanism of a mould pressing tray, which comprises a base and a polishing part, the base of the mechanism is connected with the polishing part through a connecting piece, the polishing part automatically changes the edging position along with the rotation of the base to carry out automatic edging, a rolling shaft is needed to press in the edging process, and the automatic edging mechanism is provided with a swing arm and an air cylinder piston. The polishing component can move horizontally, forwards, backwards, upwards and downwards; a dust recycling system is further arranged to recycle dust generated in the edge grinding process, and harm to the body health of operators is reduced; according to the edge grinding mechanism of the mould pressing tray, automatic control is achieved, labor cost is reduced, individual differences are eliminated, quality control is facilitated, edge grinding efficiency is improved, and the edge grinding mechanism is environmentally friendly.

Description

[0001] This application claims priority to the prior Chinese application, application number: 2024212534600, filing date June 3, 2024; claims priority to the prior Chinese application, application number: 2024112066234, filing date August 30, 2024; all contents thereof are made part of this utility model. Technical Field

[0002] The utility model belongs to the field of machinery, and in particular relates to an automatic edge grinding mechanism for a molded pallet. Background Art

[0003] As the most fundamental containerized equipment for containerized units and unitized logistics, pallets are closely intertwined with the development of the logistics industry. The logistics industry has experienced steady growth in recent years, and with the nationwide implementation of palletized transportation, the pallet industry has also flourished. Pallets, as the primary means of moving and handling goods, are primarily used to protect cargo, automate freight transportation, and improve cargo flow efficiency. In today's commodity trading system, weight is often used as the unit of measurement for transaction value, including weight measurement of the cargo itself, prevention of overweight transport vehicles, and real-time weight gain or loss during cargo use. Therefore, the ability to visualize cargo weights would significantly improve trade efficiency.

[0004] Molded pallets, or plant fiber molded flat industrial pallets, are typically made from wood shavings, plant straw, bamboo, and other materials. They are monolithic structures, with the panels and support legs molded in a single process. The pallet's upper surface is smooth and flat, suitable for transporting a wide variety of goods, while the lower surface features reinforcing ribs. The pallet's surface is evenly distributed across the board, and its nine legs allow for forklift access in all four directions. This makes it a flat, single-sided pallet with four-way access.

[0005] Since molded pallets are made from recyclable resources such as straw, tree branches, wood chips, bamboo chips, bamboo fertilizer, etc., the production process usually adopts hot pressing and other methods. The raw materials and processes are relatively environmentally friendly. Therefore, molded pallets are increasingly occupying the theme of the pallet market, and the research on molded pallets is becoming more and more intensive. How to better utilize environmentally friendly raw materials and how to improve the load-bearing and strength of pallets are both key research directions of molded pallets.

[0006] Compared with traditional plastic or wooden pallets, molded pallets have the advantages of environmentally friendly materials, streamlined manufacturing processes, low manufacturing costs, low environmental pollution during the manufacturing process, and fewer post-manufacturing processing procedures. As for the pallets themselves, molded pallets are compacted using shredded waste materials, and the density of the compacted material is high. Compared with plastic pallets, they have high compressive strength, good wear resistance, and a wider range of usage scenarios. Compared with traditional wooden pallets, molded pallets undoubtedly have great advantages in terms of material sourcing. The materials for molded pallets are usually processing waste such as sawdust or crop waste, such as straw. Compared with wooden pallets that require logging, molded pallets not only reduce costs, but also meet the requirements of energy conservation, environmental protection, and protection of non-renewable resources.

[0007] After molded pallets are pressed and formed, their outer edges often have burrs, requiring edge grinding to achieve the final molded pallet product. Currently, this process is still performed manually. Due to the large size of molded pallets, manual processing is time-consuming, labor-intensive, inefficient, and costly. The resulting dust pollution is detrimental to the health of operators, and individual edging results vary, hindering quality control of molded pallets. Therefore, a method for automated edge grinding of molded pallets is urgently needed, enabling full automation of the entire edge grinding process. Utility Model Content

[0008] In order to solve the above problems, the utility model provides an edging mechanism for a molded pallet, including a base and a grinding component. The base of the mechanism is connected to the grinding component by a connecting part. The grinding component automatically changes the edging position as the base rotates to perform automatic edging. During the edging process, a roller is required to press. A swing arm and a cylinder piston are provided so that the grinding component can move horizontally and forward and backward and up and down. A dust recovery system is also provided to recover the dust generated during the edging process, reducing damage to the health of the operator. The edging mechanism for the molded pallet provided by the utility model realizes automatic control, which not only reduces labor costs, eliminates individual differences, and is beneficial to quality control, but also improves edging efficiency and is green and environmentally friendly.

[0009] On the one hand, the utility model provides an automatic edge grinding mechanism, including a base and a grinding component; the base is used to fix the object to be ground, and the grinding component is used to automatically grind the object to be ground; the grinding component is connected to the base through a connecting member.

[0010] The automatic edge grinding mechanism described in the present invention can also be understood as an automatic grinding mechanism, which is mainly used for automatic grinding of objects to be ground.

[0011] It is understandable that the automatic edge grinding mechanism can automatically grind the object to be polished, and two conditions must be met: one is that the object to be polished and the polishing component are close to each other; the other is that one of them moves automatically while the other remains relatively stationary, so that friction occurs between the object to be polished and the polishing component to complete the polishing.

[0012] The grinding component provided by the present invention is connected to the base through a connecting piece, so that the grinding component and the object to be polished always maintain an appropriate distance, so that the grinding component can always contact the edge of the object to be polished and perform edge grinding. The length of the connecting piece must be within an appropriate range. If the length of the connecting piece is too long, the contact area between the sanding cloth in the grinding component and the object to be polished becomes smaller, so that the degree of edge grinding is small and the edge grinding is insufficient, which may cause some burrs on the edge of the object to be polished to not be ground clean; if the length of the connecting piece is too short, the grinding component and the object to be polished are in excessive contact and excessive friction, resulting in wear of the edge of the object to be polished, and also causing excessive loss of the sanding cloth in the grinding component, affecting the edge grinding effect.

[0013] In some embodiments, the object to be polished includes a molded tray. Since the molded tray has burrs on its edges after being pressed, it is necessary to perform automatic edge grinding on the edges of the molded tray.

[0014] Furthermore, the base is provided with a moving component, and the moving component can drive the base to move, thereby driving the object to be polished to move synchronously.

[0015] The utility model mainly drives the object to be polished to move by the base, while the polishing component remains relatively still and always maintains a suitable contact distance with the object to be polished, thereby realizing automatic edge grinding of the object to be polished.

[0016] Furthermore, the movement mode of the base includes horizontal rotation, vertical rotation, vertical reciprocating motion or horizontal reciprocating motion; the polishing component is slidably connected to the base through a connecting piece.

[0017] Furthermore, the base moves in a horizontal rotation manner, and the polishing component is slidably connected to a circular slide rail below the base via a connecting piece.

[0018] Furthermore, the connecting member includes a connecting rod and a slider, and the slider is connected to a slide rail below the base; when the base rotates, the slider of the grinding component slides in the slide rail.

[0019] Through the design of the slide rail and the slider, the base can be rotated while the grinding component is kept as still as possible, and the grinding component and the base still maintain the same distance.

[0020] Furthermore, the slider is a cylindrical structure, and the number of the cylindrical structures is one or more.

[0021] Furthermore, the cylindrical structure is fixed by the center of the circle, and the cylinder can rotate freely around the center of the circle. The cylindrical structure can rotate freely around the center of the circle.

[0022] The cylindrical structure can rotate freely around the center of the circle in order to reduce the friction of the slider sliding in the slide rail, make the slider slide more smoothly in the slide rail, reduce the wear of the components caused by friction, and extend the service life of the components.

[0023] Furthermore, in the automatic edging mechanism, the number of the cylindrical structures is two.

[0024] Controlling the number of sliders can improve the stability of the connection between the polishing component and the base. When the slider is connected with two cylindrical structures, the stability of the connection can be significantly improved compared to the case of a single cylindrical structure. However, the number of cylinders should not be too large. For example, using three or more cylinders will not only increase the cost but also increase the difficulty of sliding. It may even cause the slider to get stuck on the slide rail and become difficult to move smoothly. Therefore, it is preferred to use two cylindrical sliders for the sliding connection.

[0025] Furthermore, the length of the connecting piece is 5 to 20 cm, and the length of the connecting piece determines the distance between the polishing component and the base.

[0026] Research has shown that when the length of the connecting piece is 5 to 20 cm, that is, when the distance between the grinding part and the base is maintained at 5 to 20 cm, the sanding cloth of the grinding part can contact and rub with the edge of the molded tray, and the edging effect is the best, which can improve the edging efficiency and ensure product quality.

[0027] Furthermore, a roller is provided on the grinding component; during the rubbing process, the roller presses on the molding tray and keeps rotating.

[0028] During the edging process, the molded tray is placed on the base, but it is not fixed. During the rotation driven by the base, the molded tray is prone to up and down vibration or displacement, resulting in deviation in the edging position, thereby affecting the overall edging effect. Therefore, during the rotation and edging process of the molded tray, corresponding components need to be provided to help fix the relative position of the molded tray to ensure that the edge position of the molded tray during the edging process is accurate and not prone to deviation. The roller provided by the utility model plays this role, and the roller itself is also continuously rotating, so it can not only help stabilize the position of the molded tray, but also ensure that it will not be obstructed during the rotation of the molded tray, thereby improving the quality and efficiency of edging.

[0029] Furthermore, the rotation speed of the roller matches the rotation speed of the base.

[0030] The roller's rotational speed also has a significant impact on the edging effect. Because the molded pallet being polished by the polishing components is polygonal rather than circular, friction or resistance generated between the roller and the molded pallet will result in different friction or resistance on different sides of the molded pallet, resulting in uneven edging and seriously affecting product quality. When the roller's rotational speed is slower than the base's, the edging effect deteriorates. When the roller's rotational speed is faster than the base's, friction increases and can even cause the molded pallet to shift, increasing wear on the polishing components. When the molded pallet's edge rotates to the roller's position, the friction or resistance between the roller and the molded pallet becomes shorter, increasing the impact of the centrifugal force on the rotation. When the molded pallet's edge rotates to the roller's position, the friction or resistance between the roller and the molded pallet becomes longer, reducing the impact of the friction or resistance between the roller and the molded pallet on the centrifugal force. As can be seen, once friction or resistance occurs between the roller and the molded pallet, the edging effect will be very uneven. Therefore, the rotation speed of the roller must match the rotation speed of the base. This rotation speed matching does not mean that the roller's rotation speed is the same as the base's. In fact, the roller's rolling diameter is small, while the base's rotation diameter is relatively much larger. Therefore, even if the rotation speeds are the same, they cannot be matched. Instead, when the roller rotates, the displacement of a point on the roller after it contacts a point on the molded tray must be consistent with the displacement of the point on the molded tray. This is the only way to achieve a complete match. For example, if the roller has a diameter of 15cm and the molded tray has a diameter of 198cm, when the roller speed is 580rpm and the molded tray speed is 16rpm, the friction or resistance between the roller and the molded tray can be minimized. At the same time, matching the roller's rotation speed with the base's rotation speed not only reduces friction but also extends the service life of the polishing parts.

[0031] Furthermore, the grinding component is provided with a swing arm for adjusting the position of the grinding component so that the grinding component matches the irregularly shaped base.

[0032] The grinding component is connected to the base through a connecting piece, and the length of the connecting piece determines the distance between the grinding component and the base. The connecting piece includes a slide rail and a slider. Through the design of the slide rail and the slider, the base can be rotated, and the grinding component is as immobile as possible, and the grinding component and the base still maintain the same distance. However, since the molded tray is a polygon with edges, when the molded tray rotates from the edge to the edge to align the grinding component, the distance between the grinding component and the center of the base is bound to increase. Therefore, the grinding component cannot remain completely motionless and maintain its original position. It must be moved backward appropriately at this time to truly match the edge position of the molded tray and to grind the edge position of the molded tray. At this time, it is necessary to set a swing arm for the grinding component so that the grinding component can be appropriately moved within a certain sector range to adjust the distance between it and the center of the base (the center of the base is fixed).

[0033] The design of the swing arm enables the grinding parts to be suitable for various irregular-shaped bases or molded trays, and is suitable for various situations where the distance from the center of the base needs to be changed, thereby broadening the application range of the grinding parts.

[0034] Furthermore, the swing arm can cause the grinding component to move forward and backward in the horizontal plane; the base is a polygonal structure with sharp edges. When the base is rotated until the sharp edges are close to the grinding component, the grinding component is displaced backward through the swing arm, and the center distance between the grinding component and the base becomes longer; when the base is rotated until the edge of the polygon is close to the grinding component, the grinding component is displaced forward through the swing arm, and the center distance between the grinding component and the base becomes shorter.

[0035] The molded pallet is a polygonal structure with sharp edges. When the molded pallet rotates with the base, if there is no swing arm structure, the center distance between the grinding part and the base remains unchanged. Then, when the corners of the molded pallet turn around for edge grinding, the corner positions of the molded pallet and the position of the grinding part collide with each other, causing part of the molded pallet to be unable to continue edge grinding. Therefore, when the grinding part grinds the corners, a swing arm is required to continuously change the center distance between the grinding part and the base, so that the grinding part maintains a suitable distance from the corner position, so that the edge grinding work can continue.

[0036] Furthermore, in the automatic edge grinding mechanism, one or more of the grinding components are arranged around the base.

[0037] Furthermore, there are two grinding components, which are arranged on both sides of the base.

[0038] Providing two grinding parts can effectively utilize space and improve edge grinding efficiency.

[0039] On the other hand, an automatic edge grinding mechanism for a molded pallet includes a base and a grinding component; the base is used to fix the molded pallet, and the grinding component is used to automatically grind the molded pallet; the grinding component also includes a frosting cloth and a dust recovery system, the frosting cloth is used to grind the molded pallet, and the dust recovery system is used to absorb dust generated by grinding.

[0040] Furthermore, the frosting cloth is detachably fixed to the bracket, and the detachable design facilitates the replacement of the frosting cloth after it is worn.

[0041] Furthermore, the support is provided with a roller for driving the sanding cloth to rotate, thereby grinding the edge of the molded tray. The rotation speed of the roller is consistent with the rotation speed of the base, thereby extending the use time of the sanding cloth.

[0042] The frosting cloth rolls along with the roller, so that the molded pallet can be edged while rolling. At the same time, the molded pallet is constantly rotating, which is equivalent to the position of the molded pallet changing horizontally and the position of the frosting cloth changing vertically. Multiple position changes are combined to improve the edge grinding effect.

[0043] Furthermore, the bracket is supported and fixed by a support, and when the support is removed, the bracket is folded and the frosting cloth can be removed from the bracket and replaced. The detachable design makes it easy to replace the frosting cloth.

[0044] When the pillar is supported, the bracket can fix the frosting cloth in position. When the pillar is removed, the bracket loses its fulcrum and cannot be fixed, so the frosting cloth can no longer be fixed and can be directly removed from the bracket.

[0045] Furthermore, in the automatic edging mechanism, the dust recovery system includes a suction pump and a recovery channel. The suction pump is located on one side of the edging mechanism and is used to suck the dust generated by edging. The dust is recovered through the recovery channel for centralized treatment.

[0046] Furthermore, the outlet of the recovery channel is tilted upward and is located below the edge grinding position of the frosting cloth. Furthermore, the frosting cloth grinds the molded tray from top to bottom, so that the generated dust enters the recovery channel from top to bottom.

[0047] The exit of the recovery channel is tilted upward to prevent dust from floating. The direction in which the abrasive cloth grinds the edge of the molded tray is from top to bottom, so that the generated dust can basically enter the recovery channel from top to bottom and be sucked out by the suction pump, thereby improving the efficiency of dust recovery. This design reduces the damage of dust to the operator's body.

[0048] Furthermore, the polishing component pushes the sanding cloth close to the molded tray through the cylinder piston, and pushes the roller close to the upper surface of the molded tray.

[0049] Furthermore, the cylinder piston is located at the bottom of the grinding component; when the cylinder piston is opened, the cylinder piston pushes the grinding component upward, entering the working state; when the cylinder piston is closed, the grinding component descends and returns to its original position. When the edge grinding of a molded tray is completed, the cylinder piston is closed, and the grinding component descends and returns to its original position, providing space for replacing a new un-edged molded tray. When the new un-edged molded tray is replaced, the cylinder piston is activated, and the cylinder piston pushes the grinding component upward, causing it to enter the working state.

[0050] Furthermore, in the automatic edging mechanism, a groove is provided on the base, and the groove matches the protrusion on the bottom of the molded tray; when the molded tray is placed on the base, the protrusion enters the groove, and the molded tray completes positioning.

[0051] The grooves of the base can help position and fix the molded tray to avoid improper positioning, and at the same time enable the molded tray to rotate more stably when rotating with the base.

[0052] Furthermore, the number of the grooves is consistent with that of the protrusions, including one or more, which are evenly arranged on the base and the bottom of the molded tray respectively.

[0053] The number of grooves and protrusions is consistent in order to fix the molded tray on the base. The molded tray should be fixed on the base and not move during the edging process so that the grinding part can evenly grind the molded tray.

[0054] The utility model has the following beneficial effects:

[0055] (1) The utility model provides an automatic edge grinding mechanism for a molded pallet, comprising a base and a grinding component, which can realize highly automated edge grinding of the molded pallet;

[0056] (2) By providing a connecting piece between the base and the grinding part to achieve a sliding connection, the grinding part can be relatively stationary during the movement of the base, and can also ensure that the appropriate fitting distance between the base and the object to be ground is maintained, thereby ensuring the quality of the edge grinding and the consistency of the batch;

[0057] (3) By designing a roller on the grinding component, the grinding component can help stabilize the position of the molded tray during the edge grinding process through the roller, and can also ensure that the molded tray will not be obstructed during the rotation process, thereby improving the quality and efficiency of edge grinding;

[0058] (4) The automatic edge grinding mechanism provided by the utility model is provided with a swing arm and a cylinder piston, so that the grinding part can move forward and backward and up and down, and has a better positional fit with the molded tray. It is also suitable for molded trays of various irregular shapes, achieving a high degree of automation;

[0059] (5) The sanding cloth rolls longitudinally along with the roller, and the position of the molded tray changes horizontally when it rotates. Multiple position changes are combined to improve the edge grinding effect;

[0060] (6) The automatic edge grinding mechanism provided by the utility model can recycle the dust generated during the edge grinding process as much as possible, prevent the dust from floating, and reduce the damage to the health of the operator caused by the dust;

[0061] (7) The edge grinding mechanism of the molded pallet provided by the present invention realizes automatic control, which not only reduces labor costs and improves edge grinding efficiency, but is also environmentally friendly. BRIEF DESCRIPTION OF THE DRAWINGS

[0062] Figure 1 The figure is a schematic diagram of the molded tray and automatic edge grinding mechanism (excluding the swing arm);

[0063] Figure 2 The figure is a schematic diagram of the molded tray and automatic edge grinding mechanism (viewed from above, excluding the swing arm);

[0064] Figure 3 The figure is the overall schematic diagram of the automatic edge grinding mechanism (including the swing arm);

[0065] Figure 4 Schematic diagram of the combined structure of the base and the grinding parts (excluding the swing arm);

[0066] Figure 5 is a structural diagram of the base;

[0067] Figure 6 This is a structural diagram of the polishing parts (excluding the swing arm);

[0068] Figure 7 The diagram is a schematic diagram of the structure of the grinding parts (excluding the swing arm, side view);

[0069] Figure 8 This is an exploded view of the polished parts (excluding the swing arm);

[0070] Figure 9 Schematic diagram of the swing arm swinging process for polishing parts.

[0071] Detailed description

[0072] Objects to be polished

[0073] The object to be polished can be any product that requires polishing. Its material can be wood, plastic, metal, or a mixture of different materials. The shape of the product can also be arbitrary. As long as the size can be matched with the automatic edge grinding mechanism, it can be polished. When these products have rough surfaces or edges, the automatic edge grinding mechanism provided by the utility model can be used to polish them, making the product surface smoother, more convenient to use, improving aesthetics, and enhancing user experience.

[0074] In some embodiments, the object to be polished includes a molded pallet. Molded pallets are typically made from recyclable resources such as straw, tree branches, sawdust, bamboo shavings, and bamboo fertilizer. They are typically produced using methods such as hot pressing. The raw materials are simple, low-cost, and safe for the environment. The outer edges of molded pallets often have burrs, requiring edge grinding.

[0075] Base and polished parts

[0076] The object to be polished must be kept in a specific position or keep regular movement, and the automatic edge grinding mechanism can automatically polish it. Therefore, the object to be polished must be placed on the base and fixed by the base, or follow the base to perform regular movement to complete the polishing.

[0077] The base needs to be provided with a groove or protrusion for fixing the object to be polished, and the groove or protrusion can match the protrusion or groove on the object to be polished, so that the object to be polished can be better fixed on the base. When the base moves autonomously, it can drive the object to be polished to move together. In order for the object to be polished and the polishing component to be able to perform automatic polishing, two conditions must be met: one is that the object to be polished and the polishing component are close to each other; the second is that one of them performs automatic movement while the other remains relatively motionless, so that friction occurs between the object to be polished and the polishing component to complete the polishing. For example, the object to be polished does not move, and the polishing component moves automatically close to the object to be polished to complete the polishing, or the polishing component does not move, and the component to be polished performs automatic movement. The utility model adopts a base to drive the object to be polished to move autonomously, and the polishing component is relatively still to complete the automatic polishing. Of course, it is also possible to use a method where the base and the object to be polished are fixed differently, and the polishing component rotates around the object to be polished to complete automatic polishing. However, this method has high requirements on the automation of the polishing component. The polishing component needs to move independently, and the polishing component also needs to control its sanding cloth for polishing. The control accuracy is difficult to control, and the preparation cost is also high.

[0078] In some methods, the base moves in an autonomous horizontal rotational manner, thereby driving the object to be polished to rotate autonomously, while the polishing component remains relatively stationary to complete the automatic polishing. The relative stationary state here does not mean that the polishing component is completely stationary. When the object to be polished is an irregular shape, the polishing component also needs to adjust its position during the rotation process to achieve polishing. At the same time, the sanding cloth in the sanding component does not remain stationary and also moves up and down to improve the polishing efficiency.

[0079] Of course, the base can move in more than just horizontal rotation; it can also move vertically, up and down, horizontally, left and right, and even tilted and tilted. Horizontal rotation is the most preferred method, especially for larger objects. The movement is more stable and easier to control, improving the polishing effect of the polished parts. The generated dust is also easier to collect, preventing environmental pollution. DETAILED DESCRIPTION

[0080] The present invention will be described in further detail below in conjunction with the accompanying drawings and embodiments. It should be noted that the embodiments described below are intended to facilitate understanding of the present invention and do not have any limiting effect on the present invention.

[0081] Example 1: Automatic edge grinding mechanism for molded pallets

[0082] The automatic edge grinding mechanism structure 1 provided in this embodiment is as follows: Figures 1 to 3 As shown, the apparatus comprises a base 2 and a grinding component 3. The base 2 is used to secure an object 4 to be ground, and the grinding component 3 is used to automatically grind the object 4. The grinding component 3 is connected to the base 2 via a connector 7. In this embodiment, the object 4 to be ground is a molded tray 5. Because the molded tray 5 has burrs on its edges after being pressed, it is necessary to perform automatic edge grinding on the edges of the molded tray 5.

[0083] like Figure 2 The base 2 is provided with a moving part 6, which can drive the base 2 to move, thereby driving the object 4 to be polished to move synchronously. The base 2 moves in a horizontal rotation mode, and the polishing part 3 is slidably connected to the slide rail 8 below the base 2 through a connecting member 7. The connecting member 7 includes a connecting rod 9 and a slider 10, and the slider 10 is connected to the slide rail 8 below the base 2; when the base 2 rotates, the slider 10 of the polishing part 3 slides in the slide rail 8. Through the design of the slide rail 8 and the slider 10, the base 2 can be rotated while the polishing part 3 is kept as still as possible, and at the same time, the polishing part 3 and the base 2 still maintain the same distance.

[0084] like Figure 2 、 6~8, preferably, the slider 10 is a cylindrical structure 11, and the number of the cylindrical structures 11 is one or more. The cylindrical structure 11 is fixed by the center 12, and the cylinder 13 can rotate freely around the center 12. The cylindrical structure 11 can rotate freely around the center. The free rotation of the cylindrical structure 11 around the center 12 can reduce the friction of the slider 10 sliding in the slide rail 8, making the sliding of the slider 10 in the slide rail 8 smoother, reducing the wear of each component caused by friction, and extending the service life of each component. The number of cylindrical structures 11 is preferably two. Controlling the number of cylindrical structures 11 can improve the stability of the connection between the grinding component 3 and the base 2. When the slider 10 is connected by two cylindrical structures 11, the stability of the connection can be significantly improved compared to the case of one cylindrical structure 11. However, the number of cylindrical structures 11 cannot be too many. For example, when there are three or more, it not only increases the cost but also increases the difficulty of sliding. It may even happen that the slider 10 is stuck on the slide rail 8 and difficult to move smoothly. Therefore, it is preferred to use two cylindrical structures 11 as the slider 10 for sliding connection.

[0085] The length of the connecting member 7 determines the distance between the grinding component 3 and the base 2, which is preferably 5 to 20 cm, and most preferably 12 cm. That is, when the distance between the grinding component 3 and the base 2 is maintained at 12 cm, the contact and friction between the sanding cloth 19 of the grinding component 3 and the edge of the molded tray 5 is the best, the edging effect is the most appropriate, which can improve the edging efficiency and ensure product quality.

[0086] like Figures 1-2 , a roller 15 is provided on the grinding component 3; during the edging process, the roller 15 presses on the top of the molded tray 5 and keeps rotating. During the edging process, the molded tray 5 is placed on the base 2, but it is not fixed. In the process of rotation driven by the base 2, the molded tray 5 is prone to up and down vibration or displacement, resulting in deviation in the edging position, thereby affecting the overall edging effect. Therefore, during the rotation and edging process of the molded tray 5, it is necessary to set corresponding components to help fix the relative position of the molded tray 5 to ensure that the edge position of the molded tray 5 during the edging process is accurate and not prone to deviation. The roller 15 plays this role, and the roller 15 itself is also continuously rotating, so it can not only help stabilize the position of the molded tray 5, but also ensure that the molded tray 5 will not be obstructed during rotation, thereby improving the quality and efficiency of edging. The rotation speed of the roller 5 matches the rotation speed of the base 2.

[0087] The rotation speed of roller 15 also has a significant impact on the edging effect. Because the molded tray 5 being polished by polishing unit 3 is a polygon rather than a circle, any friction or resistance generated between roller 15 and molded tray 5 will result in different friction or resistance on different sides of molded tray 5, resulting in uneven edging, seriously affecting product quality. When the rotation speed of the roller 15 is less than the rotation speed of the base 2, the edging effect will be deteriorated; when the rotation speed of the roller 15 is greater than the rotation speed of the base 2, it will not only increase the friction force, but even cause the molded tray 5 to shift, and the wear of the grinding component 3 will be aggravated; when the edge 16 of the molded tray 5 rotates to the position of the roller 15, due to the shortening of the center position of the roller 15 and the molded tray 5, the friction or resistance generated between the roller 15 and the molded tray 5 has a greater impact on the rotational centrifugal force; when the edge 17 of the molded tray 5 rotates to the position of the roller 15, due to the lengthening of the center position of the roller 15 and the molded tray 2, the friction or resistance generated between the roller 15 and the molded tray 2 has a smaller impact on the rotational centrifugal force. It can be seen that once friction or resistance is generated between the roller 15 and the molded tray 5, the edging effect will be uneven. Therefore, the rotation speed of the roller 15 must match the rotation speed of the base 2. The rotation speed matching mentioned here does not mean that the rotation speed of the roller 15 is the same as the rotation speed of the base 2. In fact, the rolling diameter of the roller 15 is small, while the rotation diameter of the base 2 is relatively much larger. Therefore, even if the rotation speeds are the same, they cannot match. Instead, when the roller 15 rotates, after a certain point on the roller 15 contacts a certain point on the molded tray 5, the displacement generated by the point on the roller 15 is consistent with the displacement generated by the point on the molded tray 5. Only in this way can they be completely matched. In this embodiment, the diameter of the roller 15 is 15 cm, and the diameter of the molded tray 5 is 198 cm. When the rotation speed of the roller 15 is 580 rpm and the rotation speed of the molded tray 5 is 16 rpm, the friction or resistance generated between the roller 15 and the molded tray 5 can be minimized. At the same time, matching the rotation speed of the roller 15 with the rotation speed of the base 2 can not only reduce friction, but also extend the service life of the grinding component 3.

[0088] like Figure 3The grinding component 3 is equipped with a swing arm 18 for adjusting its position to fit the irregularly shaped base 2. The grinding component 3 is connected to the base 2 via a connector 7, the length of which determines the distance between the grinding component 3 and the base 2. A slider 10 on the connector 7 slides within a slide rail 8 below the base 2. The design of the slide rail 8 and slider 10 allows the base 2 to rotate while the grinding component 3 remains as still as possible, while maintaining the same distance between the grinding component 3 and the base 2. However, since the molded tray 5 is a polygon with corners 17, when the molded tray 5 rotates from the edge 16 to the corner 17 to align with the grinding component 3, the distance between the grinding component 3 and the center of the base 2 is bound to increase. Therefore, the grinding component 3 cannot remain completely still in its original position. It must be moved backward appropriately at this time to truly match the position of the corner 17 of the molded tray 5 and to grind the corner 17 of the molded tray 5. At this time, a swing arm 18 needs to be provided for the grinding component 3 so that the grinding component 3 can be appropriately moved within a certain sector range to adjust the distance between it and the center of the base 2 (the center of the base 2 is fixed).

[0089] One end 32 of the swing arm 18 is fixed, and the other end 33 can drive the grinding component 3 to move forward and backward in the horizontal plane; the base 2 is a polygonal structure with edges and corners. When the base 2 rotates until the edge is close to the grinding component 3, the grinding component 3 is displaced backward through the swing arm 18, and the center distance between the grinding component 3 and the base 2 becomes longer; when the base 2 rotates until the edge of the polygon is close to the grinding component 3, the grinding component 3 is displaced forward through the swing arm 18, and the center distance between the grinding component 3 and the base 2 becomes shorter. The molded tray 5 is a polygonal structure with sharp edges. When the molded tray 5 rotates with the base 2, if there is no swing arm 18 structure, the center distance between the grinding component 3 and the base 2 remains unchanged. Then, when the corner 17 of the molded tray 5 turns around for edge grinding, the position of the corner 17 of the molded tray 5 collides with the position of the grinding component 3, causing a part of the molded tray 5 to be unable to continue edge grinding. Therefore, when the grinding component 3 grinds the corner 17, a swing arm 18 is required to continuously change the center distance between the grinding component 3 and the base 2, so that the grinding component 3 maintains a suitable distance from the corner 17 position, so that the edge grinding work can continue.

[0090] During the rotation of the molded tray 5, the working process of the swing arm 18 is as follows: Figure 9 As shown, when the molded tray 5 rotates from edge 16 (left) to corner 17 (right), the swing arm 18 rotates horizontally outward at an angle 34 of approximately 15 degrees, thereby moving the grinding component 3 backward to facilitate grinding the corner 17 of the molded tray 5. The design of the swing arm 18 enables the grinding component 3 to be adapted to various irregularly shaped bases 2 or molded trays 5, and to various situations requiring a change in the distance from the center of the base 2, thereby broadening the application range of the grinding component 3.

[0091] like Figures 1 to 4 In the automatic edge grinding mechanism 1, one or more grinding components 3 are arranged around the base 2. In this embodiment, preferably, there are two grinding components 3, which are arranged on both sides of the base 2. Providing two grinding components 3 not only effectively utilizes space, but also improves edge grinding efficiency.

[0092] like Figures 6-8 The grinding component 3 also includes a frosting cloth 19 and a dust recovery system 20. The frosting cloth 19 is used to grind the edge of the molded tray 5, and the dust recovery system 20 is used to absorb the dust generated by grinding. The frosting cloth 19 is detachably fixed to the bracket 21. The detachable design facilitates the replacement of the frosting cloth 19 after it is worn. Two upper and lower rollers 22 are provided on the bracket 21. The rollers 22 are used to drive the frosting cloth 19 to rotate, thereby grinding the edge of the molded tray 5. The rotation speed of the rollers 22 is consistent with the rotation speed of the base 2, extending the service life of the frosting cloth 19. The frosting cloth 19 rolls with the rollers 22, thereby grinding the edge of the molded tray 5 while rolling. At the same time, the molded tray 5 is constantly rotating, which is equivalent to the position of the molded tray 5 changing horizontally and the position of the frosting cloth 19 changing vertically. Multiple position changes are combined to improve the grinding effect. The bracket 21 is supported and fixed by the support 23. When the support 23 is supported, the bracket 21 can fix the sanding cloth 19 in place. When the support 23 is removed, the bracket 21 loses its support point and cannot be fixed, so the sanding cloth 19 can no longer be fixed and can be directly removed from the bracket 21. This detachable design makes it easier to remove and replace the sanding cloth 19.

[0093] In the automatic edging mechanism 1, the dust recovery system 20 includes a suction pump and a recovery channel 24. The suction pump is located at the far end of the recovery channel 24 and is used to suck the dust generated by edging. The dust is recovered through the recovery channel 24 and then centrally processed. The outlet 26 of the dust recovery system 20 is tilted upward and is located below the edging position of the abrasive cloth 19. It is connected to the recovery channel 24 through the channel opening 25. The abrasive cloth 19 edges the molded tray 5 from top to bottom, so that the generated dust enters the recovery channel 25 from top to bottom. The upward tilt of the outlet 26 of the recovery channel 25 can prevent dust from drifting. The abrasive cloth 19 edges the molded tray 5 from top to bottom, so that the generated dust can basically enter the recovery channel 25 from top to bottom and be sucked by the suction pump, thereby improving the efficiency of dust recovery. This design reduces the damage caused by dust to the operator's body.

[0094] like Figure 7, the grinding component 3 pushes the sanding cloth 19 close to the mold tray 5 through the cylinder piston 27, and pushes the roller 15 close to the upper surface of the mold tray 5. The cylinder piston 27 is located at the bottom 14 of the grinding component 3; when the cylinder piston 27 is turned on, the cylinder piston 27 pushes the grinding component 3 upward and enters the working state; when the cylinder piston 27 is closed, the grinding component 3 returns to its original position. When the edge grinding of a mold tray 5 is completed, the cylinder piston 27 is closed, and the grinding component 3 returns to its original position downward to provide space for replacing a new un-edged mold tray 5. When the new un-edged mold tray 5 is replaced, the cylinder piston 27 is started, and the cylinder piston 27 pushes the grinding component 3 upward, so that it enters the working state.

[0095] In the automatic edging mechanism 1, a groove 28 is provided on the base 2, and the groove 28 matches the protrusion 29 on the bottom of the molded tray 5; when the molded tray 5 is placed on the base 2, the protrusion enters the groove 28, and the molded tray 5 is positioned. The groove 28 of the base 2 can help position and fix the molded tray 5 to avoid improper positioning, and at the same time, it can make the molded tray 5 rotate more stably when rotating with the base 2. The number of grooves 28 and protrusions 29 is the same, including one or more, and are evenly arranged on the base 2 and the bottom of the molded tray 5 respectively. When the molded tray 5 is fixed to the base 2, the molded tray 5 should be fixed on the base 2 and not move during the edging process, so that the grinding component 3 can evenly grind the edge of the molded tray 5. In this embodiment, the base 2 is configured as a two-layer structure, the upper layer 30 is provided with a groove 28, and the lower layer 31 is provided with a slide rail 8. The upper layer 30 and the lower layer 31 are fixed into an integral structure. Of course, the upper layer 30 and the lower layer 31 can also be designed as a layer, with a groove 28 on the top and a slide rail 8 on the bottom, which can also achieve the same function of the base 2.

[0096] Although the present invention is disclosed as above, it is not limited thereto. Any person skilled in the art may make various changes and modifications without departing from the spirit and scope of the present invention. Therefore, the scope of protection of the present invention shall be subject to the scope defined by the claims.

Claims

1. An automatic edge grinding mechanism for a molded pallet, characterized in that: It includes a base and a polishing component; the base is used to fix the object to be polished, the polishing component is used to automatically polish the object to be polished, and the polishing component is slidably connected to the circular slide rail below the base through a connecting piece.

2. The automatic edge grinding mechanism according to claim 1, characterized in that: The base is provided with a moving part, and the moving part can drive the base to move, thereby driving the object to be polished to move synchronously.

3. The automatic edge grinding mechanism according to claim 2, characterized in that: The movement mode of the base includes horizontal rotation, vertical rotation, vertical reciprocating motion or horizontal reciprocating motion.

4. The automatic edge grinding mechanism according to claim 3, characterized in that: The base moves in a horizontal rotation manner.

5. The automatic edge grinding mechanism according to claim 4, characterized in that: The connecting member includes a connecting rod and a sliding block, and the sliding block is connected to a sliding rail below the base; when the base rotates, the sliding block of the grinding component slides in the sliding rail.

6. The automatic edge grinding mechanism according to claim 5, characterized in that: The slider is a cylindrical structure, and the number of the cylindrical structures is one or more.

7. The automatic edge grinding mechanism according to claim 6, characterized in that: The cylindrical structure is fixed by the center of the circle, and the cylinder can rotate freely around the center of the circle.

8. The automatic edge grinding mechanism according to claim 7, characterized in that: There are two cylindrical structures.

9. The automatic edge grinding mechanism according to claim 1, wherein: The object to be polished includes a molded tray.

10. The automatic edge grinding mechanism according to claim 1, wherein: The length of the connecting piece is 5 to 20 cm, and the length of the connecting piece determines the distance between the polishing component and the base.

11. The automatic edge grinding mechanism according to claim 1, wherein: The grinding component is provided with a roller; during the rubbing process, the roller presses on the object to be ground and keeps rotating.

12. The automatic edge grinding mechanism according to claim 11, wherein: The rotation speed of the roller matches the rotation speed of the base.

13. The automatic edge grinding mechanism according to claim 1, wherein: The grinding component is provided with a swing arm for adjusting the position of the grinding component so that the grinding component matches the base of irregular shape.

14. The automatic edge grinding mechanism according to claim 13, wherein: The swing arm can make the grinding component move forward and backward in the horizontal plane; the base is a polygonal structure with sharp edges. When the base is rotated until the sharp edges are close to the grinding component, the grinding component is displaced backward through the swing arm, and the center distance between the grinding component and the base becomes longer; when the base is rotated until the edge of the polygon is close to the grinding component, the grinding component is displaced forward through the swing arm, and the center distance between the grinding component and the base becomes shorter.

15. The automatic edge grinding mechanism according to claim 1, wherein: One or more of the grinding components are arranged around the base.

16. The automatic edge grinding mechanism according to claim 15, characterized in that: There are two grinding components, which are respectively arranged on both sides of the base.

17. An automatic edge grinding mechanism for a molded pallet, characterized in that: It includes a base and a polishing component; the base is used to fix the object to be polished, and the polishing component is used to automatically polish the object to be polished; the polishing component also includes a frosting cloth and a dust recovery system, the frosting cloth is used to polish the object to be polished, and the dust recovery system is used to absorb the dust generated by polishing; the polishing component is slidably connected to the circular slide rail under the base through a connecting part.

18. The automatic edge grinding mechanism according to claim 17, wherein: The frosting cloth is detachably fixed on the bracket.

19. The automatic edge grinding mechanism according to claim 18, wherein: The bracket is provided with a roller, and the roller is used to drive the sanding cloth to rotate, thereby sanding the object to be sanded.

20. The automatic edge grinding mechanism according to claim 19, wherein: The bracket is supported and fixed by pillars. When the pillars are removed, the bracket is folded and the replacement frosting cloth can be removed from the bracket for replacement.

21. The automatic edge grinding mechanism according to claim 20, wherein: The dust recovery system includes a suction pump and a recovery channel. The suction pump is located on one side of the grinding mechanism and is used to suck the dust generated by grinding. The dust is recovered through the recovery channel for centralized treatment.

22. The automatic edge grinding mechanism according to claim 21, wherein: The outlet of the recovery channel is inclined upward and is arranged below the grinding position of the abrasive cloth.

23. The automatic edge grinding mechanism according to claim 22, wherein: The grinding cloth grinds the object to be polished from top to bottom, so that the generated dust enters the recovery channel from top to bottom.

24. The automatic edge grinding mechanism according to claim 17, wherein: The grinding component pushes the sanding cloth close to the object to be polished through the cylinder piston, and pushes the roller close to the upper surface of the object to be polished.

25. The automatic edge grinding mechanism according to claim 24, characterized in that: The cylinder piston is located at the bottom of the grinding component; when the cylinder piston is opened, the cylinder piston pushes the grinding component upward to enter the working state; when the cylinder piston is closed, the grinding component descends and returns to its original position.

26. The automatic edge grinding mechanism according to claim 25, characterized in that: A groove is provided on the base, and the object to be polished is a molded tray. The groove matches the protrusion at the bottom of the molded tray; when the molded tray is placed on the base, the protrusion enters the groove, and the molded tray completes its positioning.

27. The automatic edge grinding mechanism according to claim 26, wherein: The number of the grooves is the same as that of the protrusions, including one or more, which are evenly arranged on the base and the bottom of the molded tray respectively.

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