A double-sided tray pressing device

Abstract

The utility model discloses a double -faced tray press fit device, features double -faced tray press fit device includes press fit mechanism and alignment mechanism, and press fit mechanism includes base, guide shaft, the press plate with guide hole, first support piece, fixed plate and drive mechanism, and guide shaft and support piece are installed respectively in the both sides of base through guide hole, and fixed plate is fixedly arranged on first support piece, and the connecting piece is set up on the press plate, and one end of connecting piece is connected with press plate, and the other end of connecting piece is connected in drive mechanism, and drive mechanism is fixedly arranged on fixed plate, and drive mechanism drives press plate and makes longitudinal up and down movement along guide shaft, and alignment mechanism includes the receiving table and the guide rail, and the guide rail is set up on the base, and sets up the clamping assembly on the base, and clamping assembly carries out alignment to the plastic tray on the receiving table, and the receiving table makes back and forth movement along the guide rail.

Description

Technical Field

[0001] This utility model relates to the field of pallet processing equipment technology, and in particular to a double-sided pallet pressing device. Background Technology

[0002] A plastic pallet is a logistics unit used in conjunction with forklifts, racks, and other logistics equipment. It is used to store, load, and move goods, and is an indispensable piece of logistics equipment in modern warehousing. The emergence of plastic pallets is a response to environmental needs; using plastic pallets instead of wooden pallets is the best way to reduce deforestation. It is also an inevitable product of the development of the logistics industry. With the increasing emphasis on food safety and the high hygiene requirements of the pharmaceutical industry, plastic pallets, with their corrosion resistance, moisture resistance, rust resistance, insect resistance, and mold resistance, are favored and sought after by the food and pharmaceutical industries.

[0003] Double-sided plastic pallets are a common type of pallet structure, meaning they can be used on both sides. Compared to other pallet structures, their primary function is stacking goods. Double-sided pallets are most widely used in the chemical industry. In addition, they can be used with palletizers for stacking goods, and are commonly found in the food and beverage, and flour processing industries. A double-sided plastic pallet consists of two parts, an upper and lower section, which are injection molded separately. The two sections are then manually aligned and hammered together. Manual alignment of the two sections is prone to errors and is inefficient. Summary of the Invention

[0004] The main purpose of this invention is to provide a double-sided pallet pressing device to solve the problems of pallet alignment deviation and low working efficiency in the prior art.

[0005] To achieve the above objectives, this utility model provides a double-sided pallet pressing device, comprising: a pressing mechanism, the pressing mechanism including a base, a guide shaft, a pressure plate with a guide hole, a first support member, a fixed plate, and a driving mechanism, the guide shaft and the support member respectively passing through the guide hole and installed on both sides of the base, the fixed plate being fixedly mounted on the first support member, a connecting member being provided on the pressure plate, one end of the connecting member being connected to the pressure plate, and the other end of the connecting member being connected to the driving mechanism, the driving mechanism being fixedly mounted on the fixed plate, the driving mechanism driving the pressure plate to move longitudinally up and down along the guide shaft; and an alignment mechanism, the alignment mechanism including a receiving platform and a guide rail, the guide rail being mounted on the base, a clamping assembly being provided on the base, the clamping assembly aligning the plastic pallet on the receiving platform, the receiving platform moving back and forth along the guide rail.

[0006] Compared with the prior art, the advantages of this utility model are:

[0007] The guide shaft and guide hole in the pressing mechanism work together to provide precise up-and-down movement guidance for the pressing plate, ensuring that the pressing plate can accurately align with the pallet during the pressing process and avoiding pallet misalignment caused by pressing plate offset. At the same time, the guide rail in the alignment mechanism provides a stable back-and-forth movement trajectory for the receiving platform, allowing the pallet to move along the predetermined path to the pressing position, further improving the pallet positioning accuracy; the clamping assembly can align the plastic pallet on the receiving platform. After the pallet is placed on the receiving platform, the clamping assembly will fix it in the correct position, ensuring that the pallet will not move or shift during the pressing process, thus effectively solving the pallet misalignment problem.

[0008] The drive mechanism enables the pressure plate to move longitudinally up and down along the guide shaft, automating the pressing process. Compared to traditional manual or semi-automatic pressing methods, this pressing device can complete the pressing action faster and more stably, greatly improving pressing efficiency and saving labor and time costs. The alignment mechanism's guide rails and clamping components work together to quickly position the pallet in the pressing position and complete alignment and fixation in a short time, reducing the pallet's preparation time before pressing. Simultaneously, the pressing mechanism's rapid response and precise pressing capability make the entire pressing process smoother and more efficient, thus significantly improving work efficiency.

[0009] Furthermore, the clamping assembly includes a first blocking member, a second blocking member, a first cylinder with a first piston rod, and a first bracket. One end of the first bracket is fixedly mounted on the base, and the other end of the first bracket is fixedly mounted with the first cylinder. The first blocking member is fixedly connected to the first piston rod, and the second blocking member is correspondingly fixedly mounted on the left or right end of the receiving platform. The first and second blocking members cooperate with the first cylinder to automatically clamp the left and right sides of the plastic tray, enabling rapid alignment. The position of the blocking members can be adjusted by extending and retracting the first piston rod of the first cylinder to adapt to plastic trays of different sizes, providing high flexibility. The first bracket is fixed to the base to ensure structural stability when the first cylinder applies force.

[0010] Furthermore, the clamping assembly includes a third blocking member, a fourth blocking member, a second cylinder with a second piston rod, and a second bracket. One end of the second bracket is fixedly mounted on the base located in front of the receiving platform, and the other end of the second bracket is fixedly mounted with the second cylinder. The third blocking member is fixedly connected to the second piston rod, and the fourth blocking member is correspondingly fixedly mounted on the rear end of the receiving platform. The addition of the third and fourth blocking members at the front and rear ends, respectively, in conjunction with the second cylinder, automatically clamps the front and rear sides of the plastic pallet, achieving rapid alignment. When the receiving platform moves back and forth along the guide rail, the second cylinder can dynamically adjust the position of the fourth blocking member to adapt to different feeding requirements.

[0011] Furthermore, the second bracket is provided with an abutment member, which is arranged parallel to the second cylinder and abuts against the third blocking member. The parallel arrangement of the abutment member with the second cylinder can reduce lateral displacement when the second cylinder applies force, enhance positioning rigidity, and at the same time, the abutment member shares the thrust of the second cylinder, preventing the third blocking member from deforming due to single-point force.

[0012] Furthermore, the alignment mechanism also includes a first sensor and a second sensor. The first sensor is fixedly mounted on the first support, the first cylinder, or the abutment member, and the second sensor is fixedly mounted on the second support or the second cylinder. The first sensor is used to monitor whether the first plastic tray is placed in a preset position and whether the pressed plastic tray has been removed. The second sensor is used to monitor whether the second plastic tray is placed in a preset position. The first and second sensors monitor the working status of the plastic trays in real time, such as whether the plastic trays are placed in the preset positions, whether the pressing of the plastic trays is complete, and whether the plastic trays have been removed, achieving intelligent precision and reducing human error. The monitoring signal of the second sensor is linked to the pressing action to ensure the correct pressing sequence and avoid empty pressing or repeated pressing.

[0013] Furthermore, the driving mechanism is a third cylinder with a third piston rod, which is fixedly connected to the other end of the connecting member. A fixing part is provided on one end of the connecting member, and both sides of the fixing part are fixedly connected to the pressure plate by studs. The pressure plate is over 1 meter long and weighs 750 kg. If a single stud is used to directly fix the pressure plate to the connecting member, the high pressure of the third cylinder makes it difficult for the third piston rod and the connecting member to remain on the same axis during repeated pressing. Therefore, fixing both sides of the fixing part not only facilitates installation, disassembly, and maintenance, reducing downtime, but also disperses stress through locking on both sides, preventing loosening after long-term use.

[0014] Furthermore, the diameter of the fixing part is larger than the diameter of the connecting member. Locking members are respectively provided on both sides of the fixing part. Each locking member includes a first locking part and a second locking part. The first locking part is vertically connected to the second locking part and is fixed to the upper part of the fixing part by studs. The second locking part is fixed to the pressure plate by studs. The first and second locking parts are fixed by studs, forming a three-dimensional constraint with strong vibration resistance. The symmetrically arranged locking members on both sides provide double fixing protection.

[0015] Furthermore, the pressing mechanism includes a third sensor and a second support member. The second support member is arranged parallel and perpendicular to the first support member on the base. The third sensor is fixedly mounted on the second support member and is used to monitor whether the pressing height of the plastic tray is at a preset height. The third sensor monitors whether the pressing height meets the preset value and automatically adjusts the pressing height to ensure the consistency of the pressed plastic trays.

[0016] Furthermore, a limiting member is provided on the guide shaft, which limits the minimum height of the pressing plate when pressing the plastic tray. The limiting member sets the minimum height of the pressing plate to prevent the pressing plate from deforming the plastic tray.

[0017] Furthermore, a gas storage tank is fixedly mounted on the fixed plate, and the gas storage tank is used to supply gas to the third cylinder. The gas storage tank is mounted on the fixed plate, which saves external space and has a compact layout. At the same time, the use of a gas storage tank can provide sufficient air pressure to the third cylinder, eliminating the phenomenon of the pressure plate stopping operation due to insufficient pressure supplied through the air pipe. Attached Figure Description

[0018] The accompanying drawings, which form part of this application, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an undue limitation of the present invention. In the drawings:

[0019] Figure 1 This is a schematic diagram of the structure of the double-sided tray pressing device of this utility model;

[0020] Figure 2 This is another structural schematic diagram of the double-sided tray pressing device of this utility model;

[0021] The above-mentioned figures include the following reference numerals:

[0022] Pressing mechanism 1, base 11, guide shaft 12, limiting member 121, pressure plate 13, guide hole 131, connecting member 132, fixing part 133, locking member 134, first locking part 1341, second locking part 1342, first support member 14, fixing plate 15, third cylinder 16, third sensor 17, second support member 18, air tank 19, alignment mechanism 2, receiving platform 21, guide rail 22, first sensor 23, second sensor 24, clamping assembly 3, first blocking member 31, second blocking member 32, first cylinder 33, first bracket 34, abutting member 35, third blocking member 36, fourth blocking member 37, second cylinder 38, second bracket 39. Detailed Implementation

[0023] This application provides a double-sided pallet pressing device, which solves the problems of pallet alignment deviation and low working efficiency in the prior art.

[0024] The technical solution in this application embodiment aims to solve the problems of pallet alignment deviation and low working efficiency. The overall approach is as follows:

[0025] The guide shaft and guide hole in the pressing mechanism work together to provide precise up-and-down movement guidance for the pressing plate, ensuring that the pressing plate can accurately align with the pallet during the pressing process and avoiding pallet misalignment caused by pressing plate offset. At the same time, the guide rail in the alignment mechanism provides a stable back-and-forth movement trajectory for the receiving platform, allowing the pallet to move along the predetermined path to the pressing position, further improving the pallet positioning accuracy; the clamping assembly can align the plastic pallet on the receiving platform. After the pallet is placed on the receiving platform, the clamping assembly will fix it in the correct position, ensuring that the pallet will not move or shift during the pressing process, thus effectively solving the pallet misalignment problem.

[0026] The drive mechanism enables the pressure plate to move longitudinally up and down along the guide shaft, automating the pressing process. Compared to traditional manual or semi-automatic pressing methods, this pressing device can complete the pressing action faster and more stably, greatly improving pressing efficiency and saving labor and time costs. The alignment mechanism's guide rails and clamping components work together to quickly position the pallet in the pressing position and complete alignment and fixation in a short time, reducing the pallet's preparation time before pressing. Simultaneously, the pressing mechanism's rapid response and precise pressing capability make the entire pressing process smoother and more efficient, thus significantly improving work efficiency.

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the present utility model or its application or use. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0028] like Figure 1-2 As shown, a double-sided pallet pressing device includes:

[0029] The pressing mechanism 1 includes a base 11, a guide shaft 12, a pressure plate 13 with a guide hole 131, a first support member 14, a fixing plate 15, a drive mechanism, a third sensor 17, and a second support member 18. The guide shaft 12 and the first support member 14 are respectively installed on both sides of the base 11 through the guide hole 131. A limiting member 121 is provided on the guide shaft 12 to limit the lowest height of the pressure plate 13 when pressing the plastic tray, preventing the pressure plate 13 from deforming the plastic tray. The fixing plate 15 is fixedly installed on the upper end of the first support member 14. A connecting member 132 is provided on the pressure plate 13, with one end of the connecting member 132 connected to the pressure plate 13. The other end of 2 is connected to the third piston rod of the third cylinder 16. The third cylinder 16 is a type of drive mechanism that drives the pressure plate 13 to move longitudinally up and down along the guide shaft 12. A fixing part 133 is provided on one end of the connecting part 132. The two sides of the fixing part 133 are fixedly connected to the pressure plate 13 by studs. This is because the pressure plate 13 is over 1 meter long and weighs 750 kg. If a single stud is used to directly fix the pressure plate 13 to the connecting part 132, due to the high pressure of the third cylinder 16, it is difficult for the third piston rod and the connecting part 132 to stay on the same axis during repeated pressing. Therefore, the two sides of the fixing part 133 are fixedly connected to the pressure plate 132 by studs. The two sides are fixed separately, which not only facilitates installation, disassembly and maintenance, reducing downtime, but also disperses stress through locking on both sides, preventing loosening after long-term use. In specific implementation, the diameter of the fixing part 133 is larger than the diameter of the connecting part 132. Locking parts 134 are respectively provided on both sides of the fixing part 133. The locking parts 134 include a first locking part 1341 and a second locking part 1342. The first locking part 1341 is vertically connected to the second locking part 1342 and is fixed to the upper part of the fixing part 133 by studs. The second locking part 1342 is fixed to the pressure plate 13 by studs. The first locking part 1341 and the second locking part 1342 are respectively fixed by... The studs provide a three-dimensional constraint and strong vibration resistance, while the symmetrically arranged locking parts 134 on both sides provide double fixation. The second support 18 is parallel and perpendicular to the first support 14 on the base 11. The third sensor 17 is fixedly mounted on the second support 18. The third sensor 17 is used to monitor whether the pressing height of the plastic tray is at the preset height and can automatically adjust the pressing height to ensure the consistency of the pressed plastic tray. An air tank 19 is fixedly mounted on the fixed plate 15, which saves external space. The air tank 19 is used to supply gas to the third cylinder 16, eliminating the phenomenon of the pressure plate 13 stopping work due to insufficient pressure provided by the air pipe.

[0030] Alignment mechanism 2 includes a receiving platform 21, a guide rail 22, a first sensor 23, and a second sensor 24. The guide rail 22 is mounted on a base 11, and a clamping assembly 3 is mounted on the base 11. The clamping assembly 3 aligns the plastic pallet on the receiving platform 21, and the receiving platform 21 moves back and forth along the guide rail 22. The first sensor 23 is fixedly mounted on a first bracket 34 or a first cylinder 33. The first sensor 23 is used to monitor whether the first plastic pallet is placed in a preset position and whether the pressed plastic pallet has been removed. The second sensor 24 is fixedly mounted on a second bracket 39 or a second cylinder 38. The second sensor 24 is used to monitor whether the second plastic pallet is placed in a preset position. The first sensor 23 and the second sensor 24 are set to monitor the working status of the plastic pallet in real time, such as whether the plastic pallet is placed in a preset position, whether the plastic pallet pressing is completed, and whether the plastic pallet has been removed, etc., to achieve intelligent precision and reduce human error. The monitoring signal of the second sensor 24 is linked with the pressing action to ensure the correct pressing sequence and avoid empty pressing or repeated pressing.

[0031] In specific implementation, the clamping assembly 3 includes a first blocking member 31, a second blocking member 32, a first cylinder 33 with a first piston rod, a first bracket 34, a third blocking member 36, a fourth blocking member 37, a second cylinder 38 with a second piston rod, and a second bracket 39. One end of the first bracket 34 is fixedly mounted on the left or right side of the base 11, and the other end of the first bracket 34 is fixedly mounted with the first cylinder 33. The first blocking member 31 is fixedly connected to the first piston rod of the first cylinder 33. The second blocking member 32 is correspondingly fixedly mounted on the left or right end of the receiving platform 21. The first blocking member 31 and the second blocking member 32 cooperate with the first cylinder 33 to push and automatically clamp the left and right sides of the plastic tray, enabling rapid alignment. The position of the first blocking member 31 can be adjusted by extending and retracting the first piston rod of the first cylinder 33 to adapt to different sizes. The plastic pallet is highly flexible; the first bracket 34 is fixed to the base 11 to ensure structural stability when the first cylinder 33 applies force; one end of the second bracket 39 is fixedly mounted on the base 11 located in front of the receiving platform 21, and the other end of the second bracket 39 is fixedly mounted with the second cylinder 38; the third blocking member 36 is fixedly connected to the second piston rod of the second cylinder 38; the fourth blocking member 37 is fixedly mounted on the rear end of the receiving platform 21 in correspondence with the third blocking member 36; the third blocking member 36 and the fourth blocking member 37 are added to the front and rear ends respectively; the second cylinder 38 at the front end of the base 11 pushes the third blocking member 36 to cooperate with the fourth blocking member 37 at the rear end of the receiving platform 21, automatically clamping the front and rear sides of the plastic pallet to achieve rapid alignment; when the receiving platform 21 moves back and forth along the guide rail 22, the second cylinder 38 can dynamically adjust the position of the fourth blocking member 37 to adapt to different feeding requirements. To reduce lateral displacement when the second cylinder 38 applies force, an abutment 35 is provided on the second bracket 39. The abutment 35 is arranged parallel to the second cylinder 38 and abuts against the third blocking member 36. In this way, the abutment 35 shares the thrust of the second cylinder 38 and avoids deformation of the third blocking member 36 due to single-point force.

[0032] The technical solutions described in the embodiments of this application above have at least the following technical effects:

[0033] The guide shaft 12 and guide hole 131 in the pressing mechanism 1 cooperate with each other to provide precise up-and-down movement guidance for the pressure plate 13, ensuring that the pressure plate 13 can accurately align with the pallet during the pressing process and avoiding pallet alignment deviation caused by the offset of the pressure plate 13. At the same time, the guide rail 22 in the alignment mechanism 2 provides a stable back-and-forth movement trajectory for the receiving platform 21, enabling the pallet to move along the predetermined path to the pressing position, further improving the positioning accuracy of the pallet; the clamping assembly 3 can align the plastic pallet on the receiving platform 21. After the pallet is placed on the receiving platform 21, the clamping assembly 3 will fix it in the correct position, ensuring that the pallet will not move or shift during the pressing process, thereby effectively solving the problem of pallet alignment deviation.

[0034] The drive mechanism enables the pressure plate 13 to move longitudinally up and down along the guide shaft 12, automating the pressing process. Compared to traditional manual or semi-automatic pressing methods, this pressing device can complete the pressing action faster and more stably, greatly improving pressing efficiency and saving labor and time costs. The guide rail 22 and clamping assembly 3 of the alignment mechanism 2 work together to quickly position the pallet to the pressing position and complete alignment and fixation in a short time, reducing the preparation time of the pallet before pressing. At the same time, the rapid response and precise pressing capability of the pressing mechanism 1 make the entire pressing process smoother and more efficient, thus significantly improving work efficiency.

[0035] The working principle of this embodiment is as follows:

[0036] The pressing device is activated. The robot first places the first tray on the receiving platform 21. The first sensor 23 detects that the first tray is in place. The first tray has several mounting holes. Then, the first cylinder 33 drives the first blocking member 31 and the second blocking member 32 to cooperate left and right, and the second cylinder 38 drives the third blocking member 36 and the fourth blocking member 37 to cooperate front and back, clamping the first tray on the receiving platform 21 and completing the first step of tray positioning. Then, the first cylinder 33 and the second cylinder 38 return to the initial state. The robot places the second tray above the first tray for alignment, meaning the mounting protrusions on the second tray align with the mounting holes on the first tray, completing the pre-assembly of the trays. Next, the receiving platform 21 moves backward along the guide rail 22 to the pressing position, directly below the pressure plate, awaiting pressing. The third cylinder 16 activates, pushing out the third piston rod to press down the pressure plate 13, which is fixed to it, pressing the mounting protrusions on the second tray into the mounting holes, thus completing the pressing action of the two trays. The third sensor 17 detects that the tray pressing height is at the preset height, and then the third cylinder 16 returns to its initial state, causing the pressure plate 13 to rise to its original position. Then, the receiving platform 21 moves forward along the guide rail 22, returning to the starting position. Finally, the robot removes the assembled tray, thus completing one pressing cycle.

[0037] It should be noted that the terms "first," "second," etc., used in the specification and claims of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented, for example, in a sequence other than those illustrated or described herein.

[0038] The above are merely preferred embodiments of this utility model and are not intended to limit the scope of this utility model. Various modifications and variations may be observed by those skilled in the art. Any modifications, substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A double-sided pallet pressing device, characterized in that, The double-sided pallet pressing device includes: A pressing mechanism includes a base, a guide shaft, a pressure plate with a guide hole, a first support member, a fixed plate, and a driving mechanism. The guide shaft and the support member are respectively installed on both sides of the base through the guide hole. The fixed plate is fixedly mounted on the first support member. A connector is provided on the pressure plate. One end of the connector is connected to the pressure plate, and the other end of the connector is connected to the driving mechanism. The driving mechanism is fixedly mounted on the fixed plate and drives the pressure plate to move longitudinally up and down along the guide shaft. The alignment mechanism includes a receiving platform and a guide rail. The guide rail is disposed on the base, and a clamping assembly is disposed on the base. The clamping assembly aligns the plastic pallet on the receiving platform, and the receiving platform moves back and forth along the guide rail.

2. The double-sided pallet pressing device according to claim 1, characterized in that, The clamping assembly includes a first blocking member, a second blocking member, a first cylinder with a first piston rod, and a first bracket. One end of the first bracket is fixedly mounted on the base, and the other end of the first bracket is fixedly mounted with the first cylinder. The first blocking member is fixedly connected to the first piston rod, and the second blocking member is fixedly mounted on the left or right end of the receiving platform in correspondence with the first blocking member.

3. The double-sided pallet pressing device according to claim 1, characterized in that, The clamping assembly includes a third blocking member, a fourth blocking member, a second cylinder with a second piston rod, and a second bracket. One end of the second bracket is fixedly mounted on the base located in front of the receiving platform, and the other end of the second bracket is fixedly mounted on the second cylinder. The third blocking member is fixedly connected to the second piston rod, and the fourth blocking member is fixedly mounted on the rear end of the receiving platform in correspondence with the third blocking member.

4. A double-sided pallet pressing device according to claim 3, characterized in that, The second bracket is provided with an abutment, which is arranged parallel to the second cylinder and abuts against the third blocking member.

5. A double-sided pallet pressing device according to claim 4, characterized in that, The alignment mechanism further includes a first sensor and a second sensor. The first sensor is fixedly mounted on the first bracket, the first cylinder, or the abutment member. The second sensor is fixedly mounted on the second bracket or the second cylinder. The first sensor is used to monitor whether the first plastic tray is placed in a preset position and whether the pressed plastic tray is removed. The second sensor is used to monitor whether the second plastic tray is placed in a preset position.

6. A double-sided pallet pressing device according to claim 1, characterized in that, The driving mechanism is a third cylinder with a third piston rod. The third piston rod is fixedly connected to the other end of the connecting member. A fixing part is provided on one end of the connecting member. Both sides of the fixing part are fixedly connected to the pressure plate by studs.

7. A double-sided pallet pressing device according to claim 6, characterized in that, The diameter of the fixing part is larger than the diameter of the connecting member. Locking members are respectively provided on both sides of the fixing part. The locking members include a first locking part and a second locking part. The first locking part is vertically connected to the second locking part. The first locking part is fixed to the upper part of the fixing part by a stud. The second locking part is fixed to the pressure plate by a stud.

8. A double-sided pallet pressing device according to claim 1, characterized in that, The pressing mechanism includes a third sensor and a second support member. The second support member is arranged parallel and perpendicular to the first support member on the base. The third sensor is fixedly arranged on the second support member. The third sensor is used to monitor whether the pressing height of the plastic tray is at a preset height.

9. A double-sided pallet pressing device according to claim 1 or 8, characterized in that, A limiting member is provided on the guide shaft, which is used to limit the lowest height of the pressing plate when pressing the plastic tray.

10. A double-sided pallet pressing device according to claim 6 or 8, characterized in that, An air tank is fixedly mounted on the fixed plate, and the air tank is used to supply gas to the third cylinder.

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