Demolding mechanism of plastic tray module

Abstract

The utility model relates to the technical field of plastic tray production, and discloses a demolding mechanism of a plastic tray module, which comprises a bottom plate serving as a supporting main body, a supporting leg fixedly connected to the top end of the bottom plate, a lower mold fixedly connected to the top end of the supporting leg, and a supporting frame fixedly connected to the bottom end of the lower mold. A push plate is slidably connected to the inner wall of the supporting frame, a supporting plate is fixedly connected to the top end of the bottom plate, a motor is fixedly connected to the front end of the supporting plate, the driving end of the motor penetrates through the supporting plate and is fixedly connected with an eccentric wheel, and a rotating plate is rotatably connected to the rear end of the eccentric wheel. According to the plastic tray taking-out device, the eccentric wheel is driven by the motor, the rotating plate is driven by the eccentric wheel, the rotating block is driven by the rotating plate, and the pushing plate is driven by the rotating block to push out the tray module, so that a plastic tray can be quickly taken out from a mold, the production cycle of a single product is shortened, more products are produced in unit time, and the production efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of plastic pallet manufacturing technology, and in particular to a demolding mechanism for a plastic pallet module. Background Technology

[0002] Plastic pallets are logistics units used in conjunction with forklifts, racks, and other logistics equipment. They are used to store, load, and move goods and are an indispensable piece of logistics equipment in modern warehousing. Plastic pallets are favored and sought after by the food and pharmaceutical industries for their characteristics such as corrosion resistance, moisture resistance, rust resistance, insect resistance, and mold resistance.

[0003] After plastic pallets are formed in the injection mold, they adhere to the inner wall of the mold and are difficult to separate. Often, a demolding mechanism is needed to demold the plastic pallets. However, existing demolding mechanisms often require manual operation by workers, have a low degree of automation, and are inefficient in demolding. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing a demolding mechanism for a plastic pallet module. This mechanism uses a motor to drive an eccentric wheel, which in turn drives a rotating plate, which in turn drives a rotating block. The rotating block then drives a push plate to eject the pallet module, thereby quickly removing the plastic pallet from the mold, reducing the production cycle of individual products, increasing the production capacity per unit time, and improving production efficiency.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] A demolding mechanism for a plastic pallet module includes: a base plate serving as a supporting body; a support leg fixedly connected to the top of the base plate; a lower mold fixedly connected to the top of the support leg; a support frame fixedly connected to the bottom of the lower mold; a push plate slidably connected to the inner wall of the support frame; a support plate fixedly connected to the top of the base plate; a motor fixedly connected to the front end of the support plate; an eccentric wheel fixedly connected to the drive end of the motor through the support plate; a rotating plate rotatably connected to the rear end of the eccentric wheel; a rotating block rotatably connected to the top of the rotating plate; a connecting frame fixedly connected to the top of the base plate; an electric push rod fixedly connected to the top of the connecting frame; an upper mold fixedly connected to the drive end of the electric push rod through the connecting frame; and a fixing component provided on the outer wall of the lower mold.

[0007] Furthermore, the bottom end of the push plate is rotatably connected to the top end of the rotating block, and the outer wall of the push plate is slidably connected to the inner wall of the lower mold.

[0008] Furthermore, a guide rod is fixedly connected to the bottom end of the upper mold, and multiple guide holes are provided on the inner wall of the lower mold corresponding to the guide rod.

[0009] Furthermore, slides are fixedly connected to both sides of the outer wall of the upper mold, and the outer wall of the slides is slidably connected to the inner wall of the connecting frame.

[0010] Furthermore, the top of the upper mold is provided with an injection port.

[0011] Furthermore, the fixing assembly includes a fixing frame fixedly connected to the outer wall of the lower mold, a pull rod slidably connected to the inner wall of the fixing frame, a limit plate fixedly connected to the outer wall of the pull rod, a spring provided between the limit plate and the inner wall of the fixing frame, and an insert plate fixedly connected to the bottom end of the upper mold.

[0012] Furthermore, the inner wall of the insert plate is provided with fixing holes corresponding to the pull rod.

[0013] Furthermore, one end of each spring is connected to a limiting plate, and the other end of each spring is connected to the inner wall of the fixing frame.

[0014] This utility model has the following beneficial effects:

[0015] 1. In this utility model, the eccentric wheel is driven by a motor, the eccentric wheel drives the rotating plate, the rotating plate drives the rotating block, and the rotating block drives the push plate to push out the pallet module, thereby quickly removing the plastic pallet from the mold, reducing the production cycle of a single product, producing more products per unit time, and improving production efficiency.

[0016] 2. In this utility model, the limiting plate is released and springs to insert into the fixing hole for fixation. A sealing ring is provided between the upper mold and the lower mold, which helps to maintain the integrity of the mold cavity, avoid defects such as flash and burrs caused by plastic overflow, reduce subsequent repair work, and improve production efficiency and product quality. Attached Figure Description

[0017] Figure 1 This is an isometric view of a demolding mechanism for a plastic tray module proposed in this utility model;

[0018] Figure 2 This is a cross-sectional view of the lower mold structure of the demolding mechanism for a plastic tray module proposed in this utility model.

[0019] Figure 3 This is a schematic cross-sectional view of the connecting frame structure of the demolding mechanism for a plastic tray module proposed in this utility model.

[0020] Figure 4 This is a schematic diagram of the internal structure of the fixing frame of the demolding mechanism for a plastic tray module proposed in this utility model.

[0021] Legend:

[0022] 1. Base plate; 2. Support feet; 3. Lower mold; 4. Support plate; 5. Motor; 6. Eccentric wheel; 7. Rotating plate; 8. Rotating block; 9. Support frame; 10. Push plate; 11. Connecting frame; 12. Electric push rod; 13. Upper mold; 14. Slide table; 15. Guide rod; 16. Guide hole; 17. Fixing frame; 18. Fixing hole; 19. Pull rod; 20. Limiting plate; 21. Spring; 22. Insert plate. Detailed Implementation

[0023] 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. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] Reference Figure 1 - Figure 3 This utility model provides an embodiment of a demolding mechanism for a plastic pallet module, comprising: a base plate 1 serving as a supporting body; a support leg 2 fixedly connected to the top of the base plate 1; a lower mold 3 fixedly connected to the top of the support leg 2; a support frame 9 fixedly connected to the bottom of the lower mold 3; a push plate 10 slidably connected to the inner wall of the support frame 9; a support plate 4 fixedly connected to the top of the base plate 1; a motor 5 fixedly connected to the front end of the support plate 4; an eccentric wheel 6 fixedly connected to the drive end of the motor 5 passing through the support plate 4; and a rotating plate rotatably connected to the rear end of the eccentric wheel 6. 7. A rotating block 8 is rotatably connected to the top of the rotating plate 7. A connecting frame 11 is fixedly connected to the top of the base plate 1. An electric push rod 12 is fixedly connected to the top of the connecting frame 11. The driving end of the electric push rod 12 passes through the connecting frame 11 and is fixedly connected to the upper mold 13. A fixing component is provided on the outer wall of the lower mold 3. The bottom end of the push plate 10 is rotatably connected to the top of the rotating block 8. The outer wall of the push plate 10 is slidably connected to the inner wall of the lower mold 3. A guide rod 15 is fixedly connected to the bottom end of the upper mold 13. A plurality of guide holes 16 are provided on the inner wall of the lower mold 3 corresponding to the guide rod 15.

[0025] Specifically, when entering the demolding stage, the electric push rod 12 is first activated. The push rod 12 retracts, causing the upper mold 13 connected to it to move upwards, gradually separating the upper mold 13 from the lower mold 3, creating conditions for the subsequent ejection of the tray module. Next, the motor 5 is activated, and its drive end begins to rotate at high speed. This rotation drives the eccentric wheel 6, which is coaxially connected to it, to rotate as well. Due to the special structure of the eccentric wheel 6, there is an eccentricity between its center and the rotation center during rotation. This causes the eccentric wheel 6 to produce regular displacement changes during rotation. These displacement changes are transmitted to the rotating plate 7 in contact with it, causing the rotating plate 7 to rotate... The reciprocating motion of the rotating plate 7 further drives the rotating block 8 to move. The rotating block 8 is connected to the push plate 10, so the movement of the rotating block 8 causes the push plate 10 to move as well. During the movement, the push plate 10 gradually approaches the pallet module located inside the lower mold 3. When the push plate 10 contacts the pallet module, the continuous pushing force pushes the pallet module out of the lower mold 3. Through such a series of continuous demolding actions, the plastic pallet can be quickly removed from the mold. The rapid demolding greatly shortens the production cycle of a single product, allowing more products to be produced in the same unit of time, thereby significantly improving the overall production efficiency and meeting the needs of large-scale production.

[0026] Reference Figure 1 , Figure 2 and Figure 4 The upper mold 13 has slides 14 fixedly connected to both sides of its outer wall. The outer wall of the slides 14 is slidably connected to the inner wall of the connecting frame 11. The top of the upper mold 13 is provided with an injection port. The fixing assembly includes a fixing frame 17 fixedly connected to the outer wall of the lower mold 3. The inner wall of the fixing frame 17 is slidably connected with pull rods 19. The outer wall of the pull rods 19 is fixedly connected with limit plates 20. Springs 21 are provided between the limit plates 20 and the inner wall of the fixing frame 17. The bottom of the upper mold 13 is fixedly connected with an insert plate 22. The inner wall of the insert plate 22 is provided with fixing holes 18 corresponding to the pull rods 19. One end of the springs 21 is connected to the limit plates 20, and the other end of the springs 21 is connected to the inner wall of the fixing frame 17.

[0027] Specifically, at the start of the injection molding operation, the electric push rod 12 is activated, extending to push the connected upper mold 13 towards the lower mold 3. During the movement of the upper mold 13, the guide rod 15 also moves synchronously, gradually approaching the guide hole 16 on the lower mold 3 and ultimately precisely inserting into it. This action plays a crucial positioning role, ensuring precise matching of the upper mold 13 and lower mold 3 during mold closing, laying the foundation for the subsequent injection molding process. Simultaneously, the movement of the upper mold 13 causes the insert plate 22 to move as well. As the insert plate 22 moves, it pulls the connected pull rod 19. With the continuous movement of the insert plate 22, it eventually successfully inserts into the lower mold 3. Once the insert plate 22 is in place, the pull rod 19 is released. At this point, the spring 21 activates, quickly lifting the limiting plate 20. The lifted limiting plate 20 accurately inserts into the fixing hole 18 on the lower mold 3, thereby achieving a stable fixation of the relative positions of the upper mold 13 and lower mold 3. To ensure the stability of the mold closing state, it is worth mentioning that a sealing ring is set between the contact surfaces of the upper mold 13 and the lower mold 3. The sealing ring can effectively fill the tiny gaps between the molds. During the injection molding process, when the high-pressure molten plastic is injected into the mold cavity, the sealing ring prevents the plastic from overflowing from the mold gaps, thereby maintaining the integrity of the mold cavity. This measure greatly avoids defects such as flash and burrs caused by plastic overflow, reduces the workload of subsequent plastic product repair, and significantly improves production efficiency. At the same time, the quality of the product is also effectively improved because there are no such appearance defects. In addition, during the movement of the upper mold 13, the slide table 14 slides synchronously in the inner wall of the connecting frame 11. The tight cooperation between the slide table 14 and the connecting frame 11 provides reliable support and guidance for the movement of the upper mold 13, greatly improving the stability of the upper mold 13 during movement, ensuring the smoothness of the entire mold closing process, and further ensuring the precision of the injection molding process and the quality of the product.

[0028] Working principle: First, during injection molding, the electric push rod 12 is activated, causing the upper mold 13 to move. As the upper mold 13 moves, it moves the guide rod 15, which then inserts into the guide hole 16 for positioning. The movement of the upper mold 13 also moves the insert plate 22, pulling the pull rod 19 and inserting it into the lower mold 3. Upon insertion, the pull rod 19 is released, causing the spring 21 to spring the limiting plate 20. The limiting plate 20 then inserts into the fixing hole 18 for fixation. A sealing ring is provided between the upper mold 13 and the lower mold 3 to help maintain the integrity of the mold cavity, preventing defects such as flash and burrs caused by plastic overflow, reducing subsequent finishing work, and improving production efficiency. Product quality is improved by moving the upper mold 13, which causes the slide table 14 to slide on the inner wall of the connecting frame 11. The slide table 14 improves the stability of the upper mold 13 during movement. The injection port on the upper mold 13 can be used for injection. During demolding, the electric push rod 12 is first opened to separate the upper mold 13 from the lower mold 3. At this time, the motor 5 is started, and when its drive end rotates, it drives the eccentric wheel 6 to rotate. When the eccentric wheel 6 rotates, it drives the rotating plate 7 to move. When the rotating plate 7 moves, it drives the rotating block 8 to move. When the rotating block 8 moves, it drives the push plate 10 to move. When the push plate 10 moves, it pushes the tray module out of the lower mold 3, thereby quickly removing the plastic tray from the mold, reducing the production cycle of a single product, producing more products per unit time, and improving production efficiency.

[0029] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A demolding mechanism for a plastic pallet module, characterized in that The utility model relates to a supporting and moulding device for plastic injection moulding machine, including: The bottom plate (1) of supporting main part, the top fixed connection of bottom plate (1) has support leg (2), the top fixed connection of support leg (2) has lower mould (3), the bottom fixed connection of lower mould (3) has support frame (9), the inner wall sliding connection of support frame (9) has push board (10), the top fixed connection of bottom plate (1) has support plate (4), the front fixed connection of support plate (4) has motor (5), the drive end of motor (5) penetrates support plate (4) and is fixedly connected with eccentric wheel (6), the rear end rotationally connected with rotating plate (7) of eccentric wheel (6), the top rotationally connected with rotating block (8) of rotating plate (7), the top fixed connection of bottom plate (1) has connecting frame (11), the top fixed connection of connecting frame (11) has electric push rod (12), the drive end of electric push rod (12) penetrates connecting frame (11) and is fixedly connected with upper mould (13), the outer wall of lower mould (3) is provided with fixed assembly.

2. A demolding mechanism for a plastic pallet module according to claim 1, characterized in that: The bottom of push board (10) rotationally connected in the top of rotating block (8), the outer wall sliding connection of push board (10) in the inner wall of lower mould (3).

3. A demolding mechanism for a plastic pallet module according to claim 1, characterized in that: The bottom fixed connection of upper mould (13) has guide rod (15), the inner wall of lower mould (3) is provided with a plurality of guide holes (16) corresponding guide rod (15).

4. The ejection mechanism of a plastic pallet module according to claim 1, characterized in that: The outer wall both sides fixed connection of upper mould (13) has sliding table (14), the outer wall sliding connection of sliding table (14) in the inner wall of connecting frame (11).

5. The ejection mechanism of a plastic pallet module according to claim 1, characterized in that: The top of upper mould (13) is provided with injection port.

6. A demolding mechanism for a plastic pallet module according to claim 1, characterized in that: The fixed assembly includes the fixed frame (17) fixedly connected in the outer wall of lower mould (3), the inner wall sliding connection of fixed frame (17) all has pull rod (19), the outer wall fixed connection of pull rod (19) all has limit board (20), the spring (21) is all arranged between the inner wall of fixed frame (17) and limit board (20), the bottom fixed connection of upper mould (13) has plug-in board (22).

7. A demolding mechanism for a plastic pallet module according to claim 6, characterized in that: The inner wall of plug-in board (22) all is provided with fixed hole (18) corresponding pull rod (19).

8. A demolding mechanism for a plastic pallet module according to claim 6, characterized in that: One end of spring (21) is connected with limit board (20), the other end of spring (21) is connected with the inner wall of fixed frame (17).

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