Double-sided tray automated injection molding production line

Abstract

The application provides a double-sided tray automatic injection molding production line, which comprises an injection molding unit, a positioning unit, a stacking unit and a hot melting welding unit. The injection molding unit comprises an injection molding mold, the injection molding mold is provided with a mold cavity for forming a tray semi-finished product, the mold cavity comprises a first area for forming a welding surrounding bone of the tray semi-finished product, and the injection molding mold is further provided with a first cooling medium pipeline which is distributed around the first area; the positioning unit is provided with an accommodating space for accommodating the tray semi-finished product; the stacking unit is used for stacking two pieces of the tray semi-finished product in the accommodating space of the positioning unit; and the hot melting welding unit is used for hot melting and welding the two pieces of the tray semi-finished product which are aligned and stacked in the positioning unit to form a double-sided tray. Compared with the prior art, the tray semi-finished product is cooled in the injection molding mold, the deformation of the tray semi-finished product is small, the two pieces of the tray semi-finished product are positioned through the stacking unit and the positioning unit, the positioning precision is high, and therefore the quality of the double-sided tray obtained is better.

Description

Technical Field

[0001] This application relates to the field of injection molding equipment, specifically to an automated injection molding production line for double-sided pallets. Background Technology

[0002] Double-sided pallets are widely used in the logistics and transportation sector to carry goods during transport. They are typically manufactured using injection molding, but due to their complex structure, a single injection molding process is difficult and costly. In actual production, pallet semi-finished products are first manufactured through injection molding, and then two semi-finished pieces are welded together using hot melt welding to form a double-sided pallet.

[0003] However, in existing technologies, the semi-finished pallet after injection molding needs to be removed from the injection mold and allowed to cool naturally outside the mold for about 30 minutes before the subsequent welding process can begin. This external cooling method not only results in a large deformation rate of the semi-finished pallet in its free state, making it difficult to ensure precise alignment of the two semi-finished pallets before welding, thus affecting the quality of the double-sided pallet; at the same time, the long cooling waiting time also disrupts the continuity of the production process, making it impossible to achieve automated assembly line operations, which has adverse effects on production efficiency, turnover costs, and workshop layout planning. Summary of the Invention

[0004] To address the technical problem of high deformation rate of semi-finished pallets leading to quality defects in double-sided pallets in existing technologies, this application provides an automated injection molding production line for double-sided pallets, comprising:

[0005] An injection molding unit is used to injection mold a pallet semi-finished product, the pallet semi-finished product including a plate surface and welded ribs disposed on the plate surface; the injection molding unit includes an injection mold, the injection mold having a cavity for forming the pallet semi-finished product, the cavity including a first region for forming the welded ribs of the pallet semi-finished product; the injection mold also includes a first cooling medium pipeline, the first cooling medium pipeline being distributed around the first region. A conveying unit is used to move the palletized semi-finished products. A positioning unit is disposed on the conveying unit, and the positioning unit is provided with a receiving space for accommodating the pallet semi-finished product; A stacking unit, disposed on the conveying unit, is used to stack two of the pallet semi-finished products in the receiving space of the positioning unit, so that the welded ribs of the two pallet semi-finished products are aligned; and A hot melt welding unit is provided on the conveying unit. The hot melt welding unit is used to hot melt weld two pallet semi-finished products that are aligned and stacked in the positioning unit to form a double-sided pallet.

[0006] In an optional embodiment, the mold cavity further includes a second region for forming the plate surface of the tray semi-finished product; the injection mold is also provided with a second cooling medium pipeline, the second cooling medium pipeline being arranged around the second region.

[0007] In an optional embodiment, the distribution density of the first cooling medium pipeline is greater than that of the second cooling medium pipeline.

[0008] In an optional embodiment, the stacking unit includes a clamping component, a rotating component, and a moving component. The clamping component is connected to the execution end of the moving component via the rotating component. The clamping component is used to clamp the pallet semi-finished product, the rotating component is used to drive the clamping component to rotate to flip the pallet semi-finished product, and the moving component is used to drive the clamping component to move to transport the pallet semi-finished product.

[0009] In an optional embodiment, the clamping component includes a first clamping portion and a second clamping portion that are movable relative to each other, the first clamping portion and the second clamping portion being used to clamp opposite sides of the pallet semi-finished product.

[0010] In an optional embodiment, both the first clamping portion and the second clamping portion include multiple portions, and each first clamping portion and each second clamping portion are symmetrically arranged.

[0011] In an optional embodiment, the positioning unit includes a base plate and a plurality of positioning members disposed on the base plate, each positioning member enclosing a receiving space for accommodating the pallet semi-finished product, and an interval space for accommodating the first clamping part and the second clamping part is formed between adjacent positioning members.

[0012] In an optional embodiment, the conveying unit includes an automated transfer line.

[0013] In an optional embodiment, a sprue unit is further included on the conveying unit, the sprue unit being located upstream of the stacking unit; the sprue unit is used to remove residual material formed during the injection molding process of the pallet semi-finished product.

[0014] In an optional embodiment, an anti-slip mat mounting unit is further included, which is disposed on the conveying unit and located upstream of the stacking unit; the anti-slip mat mounting unit is used to install an anti-slip mat on the pallet semi-finished product.

[0015] Beneficial effects: Compared with existing technologies, the technical solution of this application cools the pallet semi-finished product through a cooling medium pipeline in the injection mold. During the cooling process, the pallet semi-finished product is constrained by the shape of the mold, and the mold cavity can limit the deformation of the pallet semi-finished product, avoiding excessive deformation that could lead to inaccurate alignment of the welded ribs. The two pallet semi-finished products are precisely positioned using a stacking unit and a positioning unit, and then the two precisely positioned pallet semi-finished products are sent into a hot melt welding unit to weld together to form a double-sided pallet. The positional deviation between the two pallet semi-finished products is small, resulting in a higher quality double-sided pallet.

[0016] Furthermore, unlike existing technologies that require removing the semi-finished pallet and placing it outside the mold for 30 minutes to cool, this application actively cools the semi-finished pallet within the injection mold using a cooling medium pipeline. Once cooled within the mold, the semi-finished pallet can directly proceed to subsequent processes without additional external cooling time. Therefore, this application achieves continuous automated production of double-sided pallets, significantly reducing production turnaround time, lowering work-in-process inventory and planning costs, while avoiding the deformation risks associated with free external cooling, further improving product quality. Attached Figure Description

[0017] Figure 1 This is an overall structural diagram of a double-sided tray in one embodiment of this application.

[0018] Figure 2 This is a structural diagram of a pallet semi-finished product in one embodiment of this application.

[0019] Figure 3 This is a structural diagram of a pallet semi-finished product in one embodiment of this application.

[0020] Figure 4 This is an overall structural diagram of a double-sided pallet automated injection molding production line according to one embodiment of this application.

[0021] Figure 5 This is a cross-sectional schematic diagram of the injection mold of an automated injection molding production line for double-sided pallets according to one embodiment of this application.

[0022] Figure 6 This is a schematic diagram of the cooling medium pipeline layout of a double-sided pallet automated injection molding production line according to one embodiment of this application.

[0023] Figure 7 This is a structural diagram of the stacking unit, positioning unit, and hot melt welding unit of a double-sided pallet automated injection molding production line according to one embodiment of this application.

[0024] Figure 8 This is a structural diagram of the positioning unit of an automated injection molding production line for double-sided pallets according to one embodiment of this application.

[0025] Figure label: 10. Injection molding unit; 11. Injection mold; 12. Mold cavity; 121. First region; 122. Second region; 131. First cooling medium pipeline; 132. Second cooling medium pipeline; 20. Transport unit; 30. Conveying unit; 40. Water cutter unit; 50. Anti-slip mat mounting unit; 60. Stacking unit; 61. Clamping component; 611. First clamping part; 62. Rotating component; 63. Moving component; 70. Positioning unit; 71. Base plate; 72. Positioning component; 73. Accommodation space; 74. Spacing space; 80. Hot melt welding unit; 100. Pallet semi-finished product; 101. Panel surface; 102. Welded frame; 103. Inner surface; 104. Outer surface. Detailed Implementation

[0026] Exemplary embodiments will now be described more fully with reference to the accompanying drawings. However, these exemplary embodiments can be implemented in many forms and should not be construed as limited to the examples set forth herein; rather, they are provided to make the description of this application more comprehensive and complete, and to fully convey the concept of the exemplary embodiments to those skilled in the art. The drawings are merely illustrative of this application and are not necessarily drawn to scale. The same reference numerals in the drawings denote the same or similar parts, and therefore repeated descriptions of them will be omitted.

[0027] like Figures 1-3 As shown, the pallet semi-finished product 100 includes a plate surface 101 and multiple welded ribs 102. The plate surface 101 includes an inner surface 103 and an outer surface 104, and the multiple welded ribs 102 are disposed on the inner surface 103 of the plate surface 101. By aligning the welded ribs 102 of two pallet semi-finished products 100 and heat-melting them together, a pallet semi-finished product 100 can be obtained. Figure 1 The double-sided tray shown.

[0028] like Figure 4As shown, this application provides an automated injection molding production line for double-sided pallets, including an injection molding unit 10, a handling unit 20, a conveying unit 30, a sprue unit 40, an anti-slip mat mounting unit 50, a stacking unit 60, a positioning unit 70, and a thermoforming welding unit 80. The injection molding unit 10 is used to injection mold a pallet semi-finished product 100. The handling unit 20 is used to transport the pallet semi-finished product 100 to the starting end of the conveying unit 30. The handling unit 20 can be a robot, conveyor belt, or other device capable of conveying the pallet semi-finished product 100. The sprue unit 40, anti-slip mat mounting unit 50, stacking unit 60, positioning unit 70, and thermoforming welding unit 80 are sequentially arranged on the conveying unit 30 along its transmission direction.

[0029] like Figure 5 As shown, the injection molding unit 10 includes an injection mold 11, and the injection mold 11 has a cavity 12 for injection molding to form a pallet semi-finished product 100. The cavity 12 can be divided into a first region 121 and a second region 122. The first region 121 is used to form the welded frame 102 of the pallet semi-finished product 100, and the second region 122 is used to form the plate surface 101 of the pallet semi-finished product 100.

[0030] The injection mold 11 is also provided with a first cooling medium pipeline 131, which surrounds the first region 121. The first cooling medium pipeline 131 is used to cool the welded frame 102 of the pallet semi-finished product 100.

[0031] During the injection molding process, before opening the injection mold 11 to remove the pallet semi-finished product 100, a cooling medium (such as cooling water) is first introduced into the first cooling medium pipeline 131 to cool the welded frame 102 to a preset temperature. Then, the injection mold 11 is opened and the pallet semi-finished product 100 is removed. During the cooling process in the injection mold 11, the welded frame 102 is constrained by the shape of the mold cavity 12, resulting in a small deformation rate. Therefore, during the subsequent hot-melt welding process, the welded frames 102 of the two pallet semi-finished products 100 can be accurately aligned, avoiding the situation where the welded frame 102 is deformed and cannot be accurately aligned, thus improving the product quality of the double-sided pallet. Furthermore, actively cooling the welded frame 102 of the pallet semi-finished product 100 through the first cooling medium pipeline 131 shortens the cooling time and improves production efficiency.

[0032] like Figure 5 As shown, the injection mold 11 is also provided with a second cooling medium pipeline 132, which is arranged around the second area 122 to cool the surface 101 of the pallet semi-finished product 100.

[0033] To ensure the welding strength of the two pallet semi-finished products 100, the material thickness of the welding frame 102 used for hot-melt welding is relatively thick, exceeding that of the plate surface 101. The thinner plate surface 101 cools more easily, while the thicker welding frame 102 is more difficult to cool. To ensure that the welding frame 102 and the plate surface 101 cool synchronously, avoiding overall deformation of the pallet semi-finished product 100 due to temperature differences, in a preferred embodiment, such as... Figure 6 As shown, the distribution density of the first cooling medium pipe 131 is greater than that of the second cooling medium pipe 132, meaning the first cooling medium pipe 131 is denser than the second cooling medium pipe 132. Distribution density can be defined as the length of the cooling medium pipes per unit area or per unit volume. Before opening the injection mold 11 and removing the tray semi-finished product 100, cooling medium (such as cooling water) is introduced into the first cooling medium pipe 131 and the second cooling medium pipe 132, enabling the welded frame 102, which is more difficult to cool, and the plate surface 101, which is easier to cool, to cool simultaneously.

[0034] like Figure 4 As shown, the conveying unit 30 is an automatic conveyor line, such as a rolling table. Multiple rollers are sequentially arranged on the rolling table along the conveying direction, with the axis of each roller perpendicular to the conveying direction of the rolling table. By driving each roller to rotate via a motor, the palletized semi-finished product 100 can be moved to the corresponding position on the rolling table. In other embodiments, the conveying unit 30 can also be a conveyor belt or other mechanical structure capable of horizontally conveying the palletized semi-finished product 100.

[0035] The sprue unit 40 is used to remove residual material formed on the pallet semi-finished product 100 during the injection molding process. The injection mold 11 has an injection channel communicating with the mold cavity 12. This injection channel is also called a sprue. During injection molding, molten injection material enters the mold cavity 12 through the injection channel. After cooling in the mold cavity 12, the pallet semi-finished product 100 is obtained. Residual injection material remaining in the injection channel after cooling will cause residual material to form on the pallet semi-finished product 100, also called sprue residue. This residual material can adversely affect subsequent positioning and hot-melt welding processes in the injection molding process. For example, residual material protruding from the edges of the pallet semi-finished product 100 can cause misalignment and hot-melt welding between two pallet semi-finished products 100. Therefore, before the pallet semi-finished product 100 is conveyed to the stacking unit 60, positioning unit 70, and hot-melt welding unit 80, the residual material on the pallet semi-finished product 100 must be removed by the sprue unit 40.

[0036] Subsequently, the automated conveyor line transports the tray semi-finished product 100, with residual materials removed, to the anti-slip mat mounting unit 50.

[0037] The anti-slip mat mounting unit 50 is used to install anti-slip mats on the pallet semi-finished product 100. Double-sided pallets need to support goods during use. To ensure the stability of the goods, there should be no slippage between the pallet and the goods, or between the pallet and the ground. Anti-slip mats must be installed on the pallet to ensure the stability of the goods during use.

[0038] Subsequently, the automatic conveyor line transports the pallet semi-finished product 100 with anti-slip mats to the stacking unit 60, and the stacking unit 60 then stacks the pallet semi-finished product 100 into the positioning unit 70.

[0039] like Figure 7 and Figure 8 As shown, the positioning unit 70 has a receiving space 73 that matches the shape of the pallet semi-finished product 100. The stacking unit 60 is used to stack two pallet semi-finished products 100 in the receiving space 73 of the positioning unit 70, so that the welded ribs 102 of the two pallet semi-finished products 100 are aligned. The stacking unit 60 includes a clamping component 61, a rotating component 62, and a moving component 63. The clamping component 61 is connected to the execution end of the moving component 63 through the rotating component 62. The clamping component 61 is used to clamp the pallet semi-finished product 100, the rotating component 62 is used to flip the pallet semi-finished product 100, and the moving component 63 is used to move the pallet semi-finished product 100.

[0040] The clamping component 61 includes a first clamping part 611 and a second clamping part that are capable of relative movement. The first clamping part 611 and the second clamping part are respectively used to clamp opposite sides of the pallet semi-finished product 100, such as the inner surface 103 and the outer surface 104 of the pallet semi-finished product 100. Specifically, the relative movement of the first clamping part 611 and the second clamping part can be driven by components such as cylinders and motors. Preferably, there are multiple first clamping parts 611 and second clamping parts, and each first clamping part 611 and each second clamping part is symmetrically arranged, thereby enabling more stable clamping of the pallet semi-finished product 100.

[0041] The rotating component 62 can be a stepper motor, servo motor, or other component that can drive the clamping component 61 to rotate, thereby enabling the pallet semi-finished product 100 to be flipped to the corresponding position when the clamping component 61 clamps the pallet semi-finished product 100.

[0042] The movable component 63 is used to move the pallet semi-finished product 100. When the clamping component 61 holds the pallet semi-finished product 100, the movable component 63 can transfer the pallet semi-finished product 100 into the positioning unit 70. Preferably, the movable component 63 is a robotic arm with multiple degrees of freedom and flexible movement. In other embodiments, the movable component 63 can also be other mechanical structures capable of driving the clamping component 61 and the rotating component 62 to displacement, such as a guide rail mechanism or a multi-link mechanism.

[0043] The following describes the workflow of the stacking unit 60, taking the inner surface 103 of the palletized semi-finished product 100 placed on the conveying unit 30 as an example, with the palletized semi-finished product 100 facing downwards: S1. The moving component 63 drives the clamping component 61 to move, so that the first clamping part 611 and the second clamping part move above and below the first tray semi-finished product 100, respectively.

[0044] S2, the first clamping part 611 and the second clamping part close together to clamp the first tray semi-finished product 100.

[0045] S3. The moving part 63 drives the clamping part 61 to a position with sufficient space, and then the rotating part 62 drives the clamping part 61 to rotate 180°, thereby causing the first pallet semi-finished product 100 held by the clamping part 61 to flip over, so that the inner surface 103 of the first pallet semi-finished product 100 faces upward.

[0046] S4. The moving part 63 drives the clamping part 61 to move so as to place the first tray semi-finished product 100 into the receiving space 73 of the positioning unit 70.

[0047] S5, the first clamping part 611 and the second clamping part open to release the first tray semi-finished product 100.

[0048] S6. The moving component 63 drives the clamping component 61 to move, so that the first clamping part 611 and the second clamping part move above and below the second tray semi-finished product 100, respectively.

[0049] S7. The first clamping part 611 and the second clamping part close together to clamp the second tray semi-finished product 100.

[0050] S8. The moving part 63 drives the clamping part 61 to move so as to place the second tray semi-finished product 100 into the receiving space 73 of the positioning unit 70.

[0051] S9. The first clamping part 611 and the second clamping part open to release the second pallet semi-finished product 100, so that the second pallet semi-finished product 100 falls on top of the first pallet semi-finished product 100 and aligns with it. At this time, the inner surface 103 of the first pallet semi-finished product 100 located below faces upward, and the inner surface 103 of the second pallet semi-finished product 100 located above faces downward.

[0052] Since the shape of the accommodating space 73 of the positioning unit 70 is consistent with the shape of the pallet semi-finished product 100, the accommodating space 73 also guides the position of the pallet semi-finished product 100. When the two pallet semi-finished products 100 are placed in the accommodating space 73 of the positioning unit 70, the edge of the accommodating space 73 guides the two pallet semi-finished products 100 to align.

[0053] like Figure 8As shown, the positioning unit 70 includes a base plate 71 and a plurality of positioning members 72 disposed on the base plate 71. Each positioning member 72 encloses a receiving space 73 for accommodating the pallet semi-finished product 100, and a gap space 74 is formed between adjacent positioning members 72 for accommodating the first clamping part 611 and the second clamping part. Thus, when the clamping member 61 places the pallet semi-finished product 100 into the receiving space 73 of the positioning unit 70, the first clamping part 611 and the second clamping part are located in the gap space 74, thereby enabling the pallet semi-finished product 100 to be smoothly placed into the receiving space 73.

[0054] After the two pallet semi-finished products 100 are placed into the positioning unit 70 and aligned, the conveying unit 30 conveys the two pallet semi-finished products 100 and the positioning unit 70 containing the two pallet semi-finished products 100 together to the hot melt welding unit 80. The hot melt welding unit 80 heats the two pallet semi-finished products 100 to fuse them into a double-sided pallet.

[0055] In the existing technology, after injection molding, the pallet semi-finished product 100 needs to be removed from the injection mold 11 and placed for cooling before the next process can be carried out. On the one hand, the deformation rate of the pallet semi-finished product 100 caused by the cooling process is relatively large, affecting the product quality of the double-sided pallet. On the other hand, the cooling process takes a long time, which prevents continuous automated production and increases costs in terms of production efficiency and workshop planning.

[0056] Compared with the prior art, in the technical solution of this application, the pallet semi-finished product 100 is cooled in the injection mold 11. During the cooling process, the pallet semi-finished product 100 is constrained by the shape of the mold cavity 12. The mold cavity 12 can limit the deformation of the plate surface 101 and the welded frame 102 of the pallet semi-finished product 100, avoiding excessive deformation of the plate surface 101 and the welded frame 102, which would cause the welded frame 102 to not be accurately aligned. Subsequently, the two pallet semi-finished products 100 are aligned and positioned by the stacking unit 60 and the positioning unit 70. Then, the two pallet semi-finished products 100 and the positioning unit 70 are sent together into the hot melt welding unit 80 to fuse the two pallet semi-finished products 100 to form a double-sided pallet. The positioning accuracy is high, the positional deviation of the two pallet semi-finished products 100 is small, and the resulting double-sided pallet has better quality.

[0057] Furthermore, unlike existing technologies that require removing the semi-finished pallet 100 and placing it outside the mold for 30 minutes to cool, this application actively cools the semi-finished pallet 100 within the injection mold 11 via a cooling medium pipeline. Once cooled within the injection mold 11, the semi-finished pallet 100 can directly proceed to subsequent processes without additional external cooling time. Therefore, this application achieves continuous automated operation in double-sided pallet production, significantly reducing production turnaround time, lowering work-in-process inventory and planning costs, while avoiding the deformation risks associated with free external cooling, further improving product quality.

[0058] Furthermore, the features, structures, or characteristics described in this application may be combined in any suitable manner in one or more exemplary embodiments. Numerous specific details are provided in the following description to give a full understanding of exemplary embodiments of this application. However, those skilled in the art will recognize that the technical solutions of this application may be practiced with one or more of the specific details omitted, or other methods, components, steps, etc., may be employed.

[0059] Those skilled in the art, upon considering the specification and the disclosed technical content, will readily conceive of other embodiments of this application. This application is intended to cover any variations, uses, or adaptations of this application that follow the general principles of this application and include common knowledge or customary techniques in the art not disclosed in this application. The specification and embodiments are to be considered exemplary only, and the true scope and spirit of this application are indicated by the appended claims.

Claims

1. An automated injection molding production line for double-sided pallets, characterized in that, include: An injection molding unit is used to injection mold a pallet semi-finished product, the pallet semi-finished product including a plate surface and welded ribs disposed on the plate surface; the injection molding unit includes an injection mold, the injection mold having a cavity for forming the pallet semi-finished product, the cavity including a first region for forming the welded ribs of the pallet semi-finished product; the injection mold also includes a first cooling medium pipeline, the first cooling medium pipeline being distributed around the first region. A conveying unit is used to move the palletized semi-finished products. A positioning unit is disposed on the conveying unit, and the positioning unit is provided with a receiving space for accommodating the pallet semi-finished product; A stacking unit, disposed on the conveying unit, is used to stack two of the pallet semi-finished products in the receiving space of the positioning unit, so that the welded ribs of the two pallet semi-finished products are aligned; and A hot melt welding unit is provided on the conveying unit. The hot melt welding unit is used to hot melt weld two pallet semi-finished products that are aligned and stacked in the positioning unit to form a double-sided pallet.

2. The automated injection molding production line for double-sided pallets according to claim 1, characterized in that, The mold cavity also includes a second region for forming the plate surface of the tray semi-finished product; the injection mold is also provided with a second cooling medium pipeline, which is arranged around the second region.

3. The automated injection molding production line for double-sided pallets according to claim 2, characterized in that, The distribution density of the first cooling medium pipeline is greater than that of the second cooling medium pipeline.

4. The automated injection molding production line for double-sided pallets according to claim 1, characterized in that, The stacking unit includes a clamping component, a rotating component, and a moving component. The clamping component is connected to the execution end of the moving component via the rotating component. The clamping component is used to clamp the pallet semi-finished product, the rotating component is used to drive the clamping component to rotate to flip the pallet semi-finished product, and the moving component is used to drive the clamping component to move to transport the pallet semi-finished product.

5. The automated injection molding production line for double-sided pallets according to claim 4, characterized in that, The clamping component includes a first clamping part and a second clamping part that are capable of relative movement. The first clamping part and the second clamping part are respectively used to clamp the opposite two sides of the pallet semi-finished product.

6. The automated injection molding production line for double-sided pallets according to claim 5, characterized in that, Both the first clamping part and the second clamping part include multiple parts, and each first clamping part and each second clamping part are symmetrically arranged.

7. The automated injection molding production line for double-sided pallets according to claim 5, characterized in that, The positioning unit includes a base plate and a plurality of positioning elements disposed on the base plate. Each positioning element encloses a receiving space for accommodating the pallet semi-finished product, and an interval space is formed between adjacent positioning elements for accommodating the first clamping part and the second clamping part.

8. The automated injection molding production line for double-sided pallets according to any one of claims 1-7, characterized in that, The conveying unit includes an automated conveyor line.

9. The automated injection molding production line for double-sided pallets according to any one of claims 1-7, characterized in that, It also includes a sprue unit disposed on the conveying unit, the sprue unit being located upstream of the stacking unit; the sprue unit is used to remove residual material formed during the injection molding process of the pallet semi-finished product.

10. The automated injection molding production line for double-sided pallets according to any one of claims 1-7, characterized in that, It also includes an anti-slip mat mounting unit disposed on the conveying unit, the anti-slip mat mounting unit being located upstream of the stacking unit; the anti-slip mat mounting unit is used to install an anti-slip mat on the pallet semi-finished product.

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