Plastic tray injection mold convenient to demold

Abstract

The utility model discloses a plastic tray injection mold convenient to demold, which is applied to the field of injection molds and comprises a lower mold frame, a cooling tank is arranged at the top of the lower mold frame, a sealing plate is bolted in the cooling tank, and a liquid inlet pipe valve and a liquid outlet pipe valve are respectively mounted on two sides of the lower mold frame in a penetrating manner. The other end of the liquid inlet pipe valve and the other end of the liquid outlet pipe valve both communicate with the interior of the cooling groove, a supporting frame is welded to the bottom of the lower mold frame, a threaded rod is rotationally connected to the bottom of the lower mold frame, a motor fixedly sleeves the other end of the threaded rod, and a threaded plate is in threaded connection with the surface of the threaded rod. And two grooves are formed in the injection molding cavity in the top of the lower mold frame, so that a good cooling effect can be achieved, heat conduction of the mold wall is accelerated, the curing efficiency of the tray is improved, meanwhile, materials can be conveniently taken, operation is simple and labor-saving, the workload of personnel is relieved, and the practicability is high.

Description

Technical Field

[0001] The utility model relates to the field of injection molds, in particular to an injection mold for a plastic tray which is easy to demould. Background Art

[0002] At present, a Chinese utility model with announcement number CN218111490U discloses a special mold for plastic pallets, including a mold base and a mounting mechanism, wherein the mounting mechanism is fixedly connected to the two ends of the mold base respectively, the top of the mold base is provided with a plurality of plastic molding process grooves, the bottom of the mold base is provided with a convex block corresponding to the plastic molding process grooves, the inner bottom of the plastic molding process groove is provided with a through groove, and the inner bottom of the plastic molding process groove is surrounded by a plurality of first ventilation holes, the mounting mechanism includes a mounting block and a supporting block, the mounting block and the top of the supporting block are connected by a basket screw, the bottom of the mounting block is provided with a mounting groove, and the supporting mechanism is fixedly connected in the mounting groove. In the utility model, through the setting of the ventilation holes, the mold can be stably and quickly vented, thereby effectively improving the application stability of the plastic pallet mold.

[0003] Although the existing injection mold can achieve the purpose of rapid exhaust through the vent holes, there are still other problems during use, such as slow cooling efficiency. After the tray is formed, it needs to wait for cooling and solidification. The center of the tray that is not in contact with external objects cools faster, while the part in contact with the inner wall of the mold cools slower. Due to the high residual heat on the inner wall of the mold, the molding efficiency of the tray is affected to a certain extent, and it is not convenient to take the tray. After the tray in the injection cavity is solidified, personnel need to insert tools into the opening of the tray to pick it up. The tray is prone to resistance during the picking process, and the operation is cumbersome and complicated. In order to solve the above problems, we propose a plastic tray injection mold that is easy to demold. Utility Model Content

[0004] The utility model aims to provide a plastic tray injection mold which is easy to demould, thereby solving the problems that the existing injection mold has a slow cooling efficiency and is inconvenient to take out materials.

[0005] The above technical purpose of the utility model is achieved through the following technical solutions: a plastic pallet injection mold that is easy to demold, comprising a lower mold frame, a cooling groove is provided on the top of the lower mold frame, a sealing plate is bolted inside the cooling groove, an inlet pipe valve and a discharge pipe valve are respectively installed on both sides of the lower mold frame, the other ends of the inlet pipe valve and the discharge pipe valve are connected to the interior of the cooling groove, a support frame is welded to the bottom of the lower mold frame, a threaded rod is rotatably connected to the bottom of the lower mold frame, a motor is fixedly sleeved on the other end of the threaded rod, a threaded plate is threadedly connected to the surface of the threaded rod, two grooves are provided in the injection cavity at the top of the lower mold frame, a push plate is placed inside the groove, and a support rod is welded between the bottom of the push plate and the threaded plate.

[0006] The adoption of the above technical solution can achieve a good cooling effect, accelerate the heat conduction of the mold wall, and improve the curing efficiency of the tray. At the same time, it can facilitate the taking of materials, the operation is simple and labor-saving, the workload of personnel is reduced, and the practicality is high.

[0007] The utility model is further configured as follows: an observation port is integrally stamped on the front side of the lower mold frame.

[0008] By adopting the above technical solution, the observation port is provided, so that personnel can observe the amount of coolant in the cooling tank conveniently.

[0009] The utility model is further configured as follows: both sides of the lower mold frame are symmetrically equipped with hanging rings.

[0010] By adopting the above technical solution and setting the lifting ring, it is convenient for personnel to move the mold using lifting equipment.

[0011] The utility model is further configured as follows: the top of the sealing plate is lower than the top of the lower mold frame.

[0012] By adopting the above technical solution, it is possible to avoid the top of the sealing plate protruding, which would cause the top of the lower mold frame and the bottom of the upper mold to not fit together.

[0013] The utility model is further configured as follows: a limiting rod is provided through the top of the threaded plate, and the top end and the bottom end of the limiting rod are respectively welded to the lower mold frame and the supporting frame.

[0014] By adopting the above technical solution, the threaded plate can be limited by setting the limiting rod to prevent the threaded plate from rotating during the process of moving up and down.

[0015] The utility model is further configured as follows: mounting plates are welded on both sides of the support frame.

[0016] By adopting the above technical solution and setting the mounting plate, it is convenient for personnel to fix the support frame on the table with screws.

[0017] The utility model is further configured as follows: the threaded rod and the threaded plate are both made of stainless steel.

[0018] By adopting the above technical solution, the threaded rod and the threaded plate have the characteristics of high strength, low density and excellent corrosion resistance.

[0019] In summary, the utility model has the following beneficial effects:

[0020] 1. The utility model fixes the support frame on the table below the upper mold with screws. When the upper mold moves down and the material liquid is injected, the coolant is pumped into the liquid inlet pipe valve through the pipeline. The coolant pumped into the liquid inlet pipe valve will flow into the cooling tank. When the coolant flows in the cooling tank, the inner wall of the lower mold frame will be cooled. Then the drain pipe valve is opened to discharge the coolant to form a circulating flow, which can achieve a good cooling effect, accelerate the heat conduction of the mold wall, and improve the curing efficiency of the tray.

[0021] 2. The utility model starts the motor after the tray is formed. After starting, the motor will drive the threaded rod to rotate. When the threaded rod rotates, it will drive the threaded plate to move upward with the cooperation of the limit rod. When the threaded plate moves upward, it will drive the push plate to move upward together with the support rod. When the push plate moves upward, it will push the tray out of the injection molding cavity, which can facilitate the removal of materials. The operation is simple and labor-saving, which reduces the workload of personnel and is highly practical. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a three-dimensional diagram of the structure of the utility model;

[0023] Figure 2 It is a front sectional view of the structure of the utility model.

[0024] Figure numerals: 1. lower mold frame; 2. cooling trough; 3. sealing plate; 4. liquid inlet pipe valve; 5. liquid discharge pipe valve; 6. support frame; 7. threaded rod; 8. motor; 9. threaded plate; 10. groove; 11. push plate; 12. support rod; 13. observation port; 14. lifting ring; 15. limit rod; 16. mounting plate. DETAILED DESCRIPTION

[0025] The utility model is further described in detail below in conjunction with the accompanying drawings.

[0026] Embodiment 1:

[0027] refer to Figure 1 and Figure 2, a plastic pallet injection mold that is easy to demold, includes a lower mold frame 1, a cooling groove 2 is opened on the top of the lower mold frame 1, a sealing plate 3 is bolted inside the cooling groove 2, and an inlet pipe valve 4 and a drain pipe valve 5 are respectively installed on both sides of the lower mold frame 1, and the other ends of the inlet pipe valve 4 and the drain pipe valve 5 are connected to the interior of the cooling groove 2. The support frame 6 is fixed to the table below the upper mold by screws. When the upper mold moves down and the material liquid is injected, the coolant is pumped into the inlet pipe valve 4 through the pipeline, and the coolant pumped into the inlet pipe valve 4 will flow into the cooling groove 2. When the coolant flows in the cooling groove 2, the inner wall of the lower mold frame 1 will be cooled, and then the drain pipe valve 5 is opened to discharge the coolant to form a circulating flow, which can achieve a good cooling effect, accelerate the heat conduction of the mold wall, and improve the curing efficiency of the pallet.

[0028] refer to Figure 1 An observation port 13 is integrally stamped on the front of the lower mold frame 1 . The setting of the observation port 13 allows personnel to observe the amount of coolant in the cooling tank 2 .

[0029] refer to Figure 1 and Figure 2 Both sides of the lower mold frame 1 are symmetrically installed with lifting rings 14. Through the setting of the lifting rings 14, it is convenient for personnel to move the mold with lifting equipment.

[0030] refer to Figure 1 and Figure 2 The top of the sealing plate 3 is lower than the top of the lower mold frame 1, which can prevent the top of the sealing plate 3 from protruding and causing the top of the lower mold frame 1 and the bottom of the upper mold to not fit together.

[0031] Brief description of the use process: fix the support frame 6 to the table below the upper mold with screws. When the upper mold moves down and the material liquid is injected, the coolant is pumped into the inlet pipe valve 4 through the pipeline. The coolant pumped into the inlet pipe valve 4 will flow into the cooling tank 2. When the coolant flows in the cooling tank 2, it will cool down the inner wall of the lower mold frame 1. Then open the drain pipe valve 5 to discharge the coolant to form a circulating flow.

[0032] Embodiment 2:

[0033] refer to Figure 1 and Figure 2, a plastic pallet injection mold that is easy to demold, a support frame 6 is welded at the bottom of the lower mold frame 1, and a threaded rod 7 is rotatably connected to the bottom of the lower mold frame 1. The other end of the threaded rod 7 is fixedly sleeved with a motor 8, and the surface of the threaded rod 7 is threadedly connected with a threaded plate 9. Two grooves 10 are provided in the injection cavity at the top of the lower mold frame 1, and a push plate 11 is placed inside the groove 10. A support rod 12 is welded between the bottom of the push plate 11 and the threaded plate 9. When the tray is formed, the motor 8 is started. After starting, the motor 8 will drive the threaded rod 7 to rotate. When the threaded rod 7 rotates, it will drive the threaded plate 9 to move upward through the cooperation of the limit rod 15. When the threaded plate 9 moves upward, it will drive the push plate 11 to move up together through the fixation of the support rod 12. When the push plate 11 moves up, it will push the tray out of the injection cavity, which can facilitate the material to be taken out, the operation is simple and labor-saving, and the workload of personnel is reduced. It is highly practical.

[0034] refer to Figure 2 A limiting rod 15 is provided through the top of the threaded plate 9, and the top and bottom ends of the limiting rod 15 are respectively welded to the lower mold frame 1 and the support frame 6. Through the setting of the limiting rod 15, the threaded plate 9 can be limited to prevent the threaded plate 9 from rotating during the up and down movement.

[0035] refer to Figure 1 and Figure 2 Mounting plates 16 are welded on both sides of the support frame 6. Through the provision of the mounting plates 16, it is convenient for personnel to fix the support frame 6 on the table with screws.

[0036] refer to Figure 2 The threaded rod 7 and the threaded plate 9 are both made of stainless steel, and the threaded rod 7 and the threaded plate 9 have the characteristics of high strength, low density and excellent corrosion resistance.

[0037] Brief description of the use process: After the tray is formed, the motor 8 is started. After starting, the motor 8 will drive the threaded rod 7 to rotate. When the threaded rod 7 rotates, it will drive the threaded plate 9 to move upward with the cooperation of the limit rod 15. When the threaded plate 9 moves upward, it will drive the push plate 11 to move upward together through the fixation of the support rod 12. When the push plate 11 moves upward, it will push the tray out of the injection cavity.

[0038] This specific embodiment is merely an explanation of the present invention and is not a limitation of the present invention. After reading this specification, those skilled in the art may make non-creative modifications to the present embodiment as needed, but such modifications are protected by patent law as long as they are within the scope of the claims of the present invention.

Claims

1. A plastic pallet injection mold that is easy to demould, comprising a lower mold frame (1), characterized in that: A cooling groove (2) is provided at the top of the lower mold frame (1), and a sealing plate (3) is bolted inside the cooling groove (2). A liquid inlet pipe valve (4) and a liquid discharge pipe valve (5) are respectively installed on both sides of the lower mold frame (1), and the other ends of the liquid inlet pipe valve (4) and the liquid discharge pipe valve (5) are connected to the inside of the cooling groove (2). A support frame (6) is welded at the bottom of the lower mold frame (1), and a threaded rod (7) is rotatably connected to the bottom of the lower mold frame (1), and a motor (8) is fixedly sleeved on the other end of the threaded rod (7). A threaded plate (9) is threadedly connected to the surface of the threaded rod (7). Two grooves (10) are provided in the injection cavity at the top of the lower mold frame (1), and a push plate (11) is placed inside the groove (10). A support rod (12) is welded between the bottom of the push plate (11) and the threaded plate (9).

2. The easy-to-demold plastic pallet injection mold according to claim 1, characterized in that: An observation port (13) is integrally stamped on the front of the lower mold frame (1).

3. The easy-to-demold plastic pallet injection mold according to claim 1, characterized in that: Hanging rings (14) are symmetrically installed on both sides of the lower mold frame (1).

4. The easy-to-demold plastic pallet injection mold according to claim 1, characterized in that: The top of the sealing plate (3) is lower than the top of the lower mold frame (1).

5. The easy-to-demold plastic pallet injection mold according to claim 1, characterized in that: A limiting rod (15) is provided through the top of the threaded plate (9), and the top and bottom ends of the limiting rod (15) are respectively welded to the lower mold frame (1) and the support frame (6).

6. The easy-to-demold plastic pallet injection mold according to claim 1, characterized in that: Mounting plates (16) are welded to both sides of the support frame (6).

7. The easy-to-demold plastic pallet injection mold according to claim 1, characterized in that: The threaded rod (7) and the threaded plate (9) are both made of stainless steel.

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