A plastic container processing mold

Abstract

The utility model provides a kind of plastic container processing mould, it is related to plastic container mould technical field, the utility model includes the U-shaped plate of fixed installation in the inner wall surface of mould box one side, and the both ends inner wall between U-shaped plate is rotatably connected with threaded rod, and the top surface of U-shaped plate is fixedly installed with the step motor of driving threaded rod rotation, stripping device further includes movable plate of screwing in the surface of threaded rod, and the inner vertical groove of movable plate is moved by the aid of threaded rod, and the surface of movable plate is fixedly installed with short pole, and the end of short pole away from movable plate is fixedly installed with sealing plate, and the inside bottom surface of lower mould is equipped with through-hole, and the inner wall surface of one side of mould box is fixedly installed with battery box and driver, the utility model is stripped by stripping device, so that the finished product of injection molding is ejected from lower mould when sealing plate is lifted upwards, and then stripping is completed to plastic container, reduce the operation difficulty of staff.

Description

Technical Field

[0001] This utility model relates to the field of plastic container mold technology, and in particular to a plastic container processing mold. Background Technology

[0002] In industrial production, molds are various shapes and tools used to obtain desired products through methods such as injection molding, blow molding, extrusion, die casting, forging, smelting, and stamping. Molds are tools used to create shaped objects. These tools are composed of various parts, and different molds are composed of different parts. They mainly achieve the processing of the shape of the object by changing the physical state of the material being molded. Molds have specific contours or internal cavity shapes. By applying the internal cavity shape, the blank can obtain a corresponding three-dimensional shape. With the rapid development of the plastics industry and the widespread application of plastic products in industries such as aviation, aerospace, electronics, machinery, shipbuilding, and automobiles, injection molds are widely used in various industries.

[0003] When processing plastic containers, existing molds often encounter problems during material unloading due to the light weight and high viscosity of the plastic products. The finished products may get stuck inside the mold cavity. To solve the problem of difficult demolding, existing methods often use pneumatic ejector pins. However, this method suffers from uneven ejection force and is prone to damaging thin-walled containers. Utility Model Content

[0004] The purpose of this utility model is to provide a plastic container processing mold to solve the problems mentioned above in the background art.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a plastic container processing mold, comprising a base, a mold box fixedly installed on the surface of the base, a lower mold fixedly installed inside the mold box, a door connected to the surface of the mold box via a hinge, an automatic demolding device provided on one inner wall surface of the mold box, the demolding device comprising a U-shaped plate fixedly installed on one inner wall surface of the mold box, a threaded rod rotatably connected between the inner walls of the two ends of the U-shaped plate, a stepper motor for driving the threaded rod to rotate fixedly installed on the top surface of the U-shaped plate, the threaded rod adopting a T8 trapezoidal thread with a lead of 8mm, and the stepper motor model being 42BYGH34.

[0006] Preferably, the demolding device further includes a movable plate threaded to the surface of the threaded rod, the inner wall surface of the U-shaped plate is provided with a vertical groove, the movable plate moves inside the vertical groove by means of the threaded rod, a short rod is fixedly installed on the surface of the movable plate, a sealing plate is fixedly installed at the end of the short rod away from the movable plate, and a through hole is provided on the inner bottom surface of the lower mold, the size of the sealing plate and the through hole are adapted to each other.

[0007] Preferably, a battery box and a driver are fixedly installed on one inner wall surface of the mold box. The battery box contains a battery, and the battery, driver, and stepper motor are electrically connected. The stepper motor and driver are connected by an RVVP4x0.75mm² shielded cable. The battery box has a capacity of 20AH, supports eight hours of continuous operation, and is compatible with AC220V fast charging. The driver is a DM542 model, supports pulse frequency adjustment from 0-200KHZ, and controls the stepper motor speed through a PLC output pulse signal, achieving an adjustable ejection speed of 0.5-5mm / s.

[0008] The effect achieved by the above components is that the finished product after injection molding will be ejected from the lower mold when the sealing plate is lifted upward, thereby completing the demolding of the plastic container.

[0009] Preferably, a support rod and a long strip plate fitted to the top surface of the base are fixedly installed on the base surface. The long strip plate has a groove on its surface and an L-shaped bracket that slides inside it. A cylinder is fixedly installed on the bottom surface of the horizontal end of the L-shaped bracket. An upper mold is fixedly installed on the output end of the cylinder. An injection port is opened on the surface of the upper mold. A support plate and an electric telescopic rod fitted to its surface are fixedly installed on the long strip plate. The electric telescopic rod drives the L-shaped bracket to move inside the groove.

[0010] The above components achieve the following effects: the electric telescopic rod moves the L-shaped bracket inside the groove, and the cylinder closes the upper and lower molds.

[0011] Preferably, a limiting device for positioning the upper mold is provided on one side surface of the mold box. The limiting device includes an L-shaped rod fixedly installed on one side surface of the mold box and an extension rod that slides inside the rod. A limiting ring is fixedly installed at the end of the extension rod away from the L-shaped rod. The gap between the inner diameter of the limiting ring and the outer diameter of the upper mold is less than or equal to 0.5 mm, forming a ring-shaped fit for limiting.

[0012] Preferably, the limiting device further includes a sliding rod fixedly installed on the outer wall surface of the L-shaped rod and a movable plate that slides on its surface. The movable plate has a plug fixedly installed on its surface, and the outer wall surface of the extension rod is evenly provided with a plurality of plug holes that match the plug.

[0013] Preferably, a circular plate is fixedly installed on the surface of the slide bar at the end away from the L-shaped bar, and a spring is fixedly installed between the circular plate and the movable plate.

[0014] The effects achieved by the above components are as follows: the setting of the limiting ring serves to block and position the upper mold; the setting of the insert rod and the insert hole serves to limit the position of the extension rod inside the L-shaped rod; and the setting of the spring serves to limit the position of the moving plate on the surface of the slide rod.

[0015] Compared with the prior art, the advantages and positive effects of this utility model are as follows:

[0016] In this invention, by setting a demolding device, the threaded rod can drive the sealing plate at a uniform speed, thereby making the ejection force controllable. It is suitable for demolding plastic containers with a wall thickness of 1 mm or more. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0018] Figure 2 This utility model Figure 1 Another structural diagram from a different angle;

[0019] Figure 3 This is a schematic diagram of the internal structure of the mold box of this utility model;

[0020] Figure 4 This utility model Figure 2 A schematic diagram of the three-dimensional structure at point A in the middle;

[0021] Figure 5 This utility model Figure 3 A schematic diagram of the three-dimensional structure at point B.

[0022] Legend: 1. Base; 2. Demolding device; 201. U-shaped plate; 202. Threaded rod; 203. Stepper motor; 204. Vertical groove; 205. Movable plate; 206. Short rod; 207. Sealing plate; 208. Through hole; 209. Battery box; 210. Driver; 3. Limiting device; 31. L-shaped rod; 32. Extension rod; 33. Limiting ring; 34. Sliding rod; 35. Moving plate; 36. Insert rod; 37. Insertion hole; 38. Round plate; 39. Spring; 4. Mold box; 5. Box door; 6. Lower mold; 7. Support rod; 8. Long strip plate; 9. Groove; 10. L-shaped bracket; 11. Cylinder; 12. Upper mold; 13. Injection port; 14. Support plate; 15. Electric telescopic rod. Detailed Implementation

[0023] Example 1, such as Figure 1-5 As shown, a plastic container processing mold includes a base 1, a mold box 4 is fixedly installed on the surface of the base 1, a lower mold 6 is fixedly installed inside the mold box 4, a door 5 is connected to the surface of the mold box 4 by a hinge, and an automatic demolding device 2 is provided on the inner wall surface of one side of the mold box 4.

[0024] Reference Figure 3-5 As shown, in this embodiment: the demolding device 2 includes a U-shaped plate 201 fixedly installed on the inner wall surface of one side of the mold box 4. A threaded rod 202 is rotatably connected between the inner walls of both ends of the U-shaped plate 201. A stepper motor 203 for driving the threaded rod 202 to rotate is fixedly installed on the top surface of the U-shaped plate 201. The threaded rod 202 adopts a T8 trapezoidal thread with a lead of 8 mm. The stepper motor 203 is a 42BYGH34. The demolding device 2 also includes a movable plate 205 threadedly connected to the surface of the threaded rod 202. A vertical groove 204 is opened on the inner wall surface of the U-shaped plate 201. The movable plate 205 moves inside the vertical groove 204 by means of the threaded rod 202. A short rod 206 is fixedly installed on the surface of the movable plate 205. A sealing plate 207 is fixedly installed at the end of the short rod 206 away from the movable plate 205. A through hole 208 is opened on the inner bottom surface of the lower mold 6. The sealing plate 207 and the through hole 208 are matched in size. A battery box 209 and a driver 210 are fixedly installed on the inner wall surface of one side of the mold box 4. The battery box 209 contains a battery, and the battery, driver 210, and stepper motor 203 are electrically connected. The stepper motor 203 and driver 210 are connected by RVVP4x0.75mm² shielded wire. The battery box 209 has a capacity of 20AH, supports eight hours of continuous operation, and is compatible with AC220V fast charging. The driver 210 is a DM542 model, which supports pulse frequency adjustment from 0-200KHZ. The PLC outputs pulse signals to control the speed of stepper motor 203, achieving an adjustable ejection speed of 0.5-5mm / s. This allows the finished product after injection molding to be ejected from the lower mold 6 when the sealing plate 207 is lifted upwards, thus completing the demolding of the plastic container.

[0025] Reference Figure 1-2 As shown in this embodiment: a support rod 7 and a long strip plate 8 fitted on the top surface of the base 1 are fixedly installed. The surface of the long strip plate 8 has a groove 9 and an L-shaped bracket 10 that slides inside it. A cylinder 11 is fixedly installed on the bottom surface of the horizontal end of the L-shaped bracket 10. An upper mold 12 is fixedly installed on the output end of the cylinder 11. An injection port 13 is opened on the surface of the upper mold 12. A support plate 14 and an electric telescopic rod 15 fitted on the surface of the long strip plate 8 are fixedly installed. The electric telescopic rod 15 drives the L-shaped bracket 10 to move inside the groove 9. The setting of the electric telescopic rod 15 has the effect of driving the L-shaped bracket 10 to move inside the groove 9. The setting of the cylinder 11 has the effect of driving the upper mold 12 and the lower mold 6 to close the mold.

[0026] Reference Figure 2-4As shown in this embodiment, a limiting device 3 for positioning the upper mold 12 is provided on one side surface of the mold box 4. The limiting device 3 includes an L-shaped rod 31 fixedly installed on one side surface of the mold box 4 and an extension rod 32 that slides inside the extension rod 32. A limiting ring 33 is fixedly installed at the end of the extension rod 32 away from the L-shaped rod 31. The gap between the inner diameter of the limiting ring 33 and the outer diameter of the upper mold 12 is less than or equal to 0.5 mm, forming a ring-shaped fit for limiting. The limiting device 3 also includes a sliding rod 34 fixedly installed on the outer wall surface of the L-shaped rod 31 and a sliding plate 35 that slides on its surface. A rod 36 is fixedly installed on the surface of the slide bar 35. Multiple insertion holes 37 matching the rod 36 are evenly opened on the outer wall surface of the extension rod 32. A circular plate 38 is fixedly installed on the end surface of the slide bar 34 away from the L-shaped rod 31. A spring 39 is fixedly installed between the circular plate 38 and the moving plate 35. The setting of the limiting ring 33 serves to block and position the upper mold 12. The setting of the rod 36 and the insertion holes 37 serves to limit the position of the extension rod 32 inside the L-shaped rod 31. The setting of the spring 39 serves to limit the position of the moving plate 35 on the surface of the slide bar 34.

[0027] Working principle: When the device is needed, firstly, cylinder 11 is activated, which moves the upper mold 12 downwards. The downward movement of the upper mold 12 cooperates with the lower mold 6 to complete the mold closing operation. Then, the operator injects raw material into the device through injection port 13. After the raw material cools down, the operator restarts cylinder 11, causing cylinder 11 to move the upper mold 12 back to its original position. Then, the electric telescopic rod 15 is activated, which moves the L-shaped bracket 10 inside the groove 9. The movement of the L-shaped bracket 10 inside the groove 9 ultimately moves the upper mold 12, causing the upper mold 12 and lower mold 6 to close. When misalignment occurs, and the upper mold 12 moves to the appropriate position, the electric telescopic rod 15 is deactivated. Then, the stepper motor 203 is started via the driver 210. The stepper motor 203 drives the threaded rod 202 to rotate. The rotation of the threaded rod 202 causes the movable plate 205 to move upward within the vertical groove 204. The upward movement of the movable plate 205 within the vertical groove 204 causes the short rod 206 to move upward. The upward movement of the short rod 206 causes the sealing plate 207 to move. The movement of the sealing plate 207 allows it to exit from the through hole 208, completing the injection molding process. The product is ejected from the lower mold 6. Then, no longer obstructed by the upper mold 12, the molded product can be removed from the lower mold 6, completing the automatic demolding process. When re-injection is required, firstly, the sliding plate 35 is slid, moving on the surface of the slide rod 34. This movement compresses the spring 39, and simultaneously, the movement of the sliding plate 35 also moves the insertion rod 36. The insertion rod 36 moves out of the insertion hole 37, separating it from the hole 37, causing the extension rod 32 to... When the internal limit of the rod 31 is lost, the extension rod 32 can be moved. The movement of the extension rod 32 drives the limit ring 33 to move. When the height of the limit ring 33 is at the same level as the lower mold 6, the moving plate 35 is released. The rebound force of the spring 39 causes the insertion rod 36 to be reinserted into the corresponding insertion hole 37, thereby fixing the position of the extension rod 32. At this time, the limit ring 33 can block and position the lower mold 6, so that when the electric telescopic rod 15 drives the L-shaped bracket 10 to move, the upper mold 12 and the lower mold 6 can maintain the same verticality, so that the positioning between the upper and lower molds 6 is accurate.

[0028] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model in any other way. Any person skilled in the art may use the disclosed technical content to make changes or modifications to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of this utility model, without departing from the scope of the utility model's technical solution, still fall within the protection scope of this utility model's technical solution. In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood through specific circumstances.

Claims

1. A plastic container processing mold, comprising a base (1), a mold box (4) fixedly mounted on the surface of the base (1), a lower mold (6) fixedly mounted inside the mold box (4), and a door (5) connected to the surface of the mold box (4) by a hinge, characterized in that: The mold box (4) has an automatic demolding device (2) on one side of its inner wall surface. The demolding device (2) includes a U-shaped plate (201) fixedly installed on the inner wall surface of one side of the mold box (4). A threaded rod (202) is rotatably connected between the inner walls of the two ends of the U-shaped plate (201). A stepper motor (203) for driving the threaded rod (202) to rotate is fixedly installed on the top surface of the U-shaped plate (201). The threaded rod (202) adopts a T8 trapezoidal thread with a lead of 8MM. The stepper motor (203) is a 42BYGH34.

2. The plastic container processing mold according to claim 1, characterized in that: The demolding device (2) further includes a movable plate (205) threadedly connected to the surface of the threaded rod (202). The inner wall surface of the U-shaped plate (201) is provided with a vertical groove (204). The movable plate (205) moves inside the vertical groove (204) by means of the threaded rod (202). A short rod (206) is fixedly installed on the surface of the movable plate (205). A sealing plate (207) is fixedly installed at the end of the short rod (206) away from the movable plate (205). A through hole (208) is provided on the inner bottom surface of the lower mold (6). The size of the sealing plate (207) and the through hole (208) are matched.

3. A plastic container processing mold according to claim 2, characterized in that: A battery box (209) and a driver (210) are fixedly installed on one side of the inner wall of the mold box (4). The battery box (209) contains a battery, and the battery, driver (210), and stepper motor (203) are electrically connected. The stepper motor (203) and driver (210) are connected by RVVP4x0.75mm² shielded wire. The battery box (209) has a capacity of 20AH, supports eight hours of continuous operation, and is compatible with AC220V fast charging. The driver (210) is a DM542 model, supports pulse frequency adjustment from 0-200KHZ, and controls the speed of stepper motor (203) by outputting pulse signals through PLC, so as to achieve an adjustable ejection speed of 0.5-5mm / s.

4. A plastic container processing mold according to claim 3, characterized in that: The base (1) is fixedly mounted with a support rod (7) and a long strip plate (8) fitted on its top surface. The long strip plate (8) has a groove (9) and an L-shaped bracket (10) that slides inside it. A cylinder (11) is fixedly mounted on the bottom surface of the horizontal end of the L-shaped bracket (10). An upper mold (12) is fixedly mounted on the output end of the cylinder (11). An injection port (13) is opened on the surface of the upper mold (12). A support plate (14) and an electric telescopic rod (15) fitted on its surface are fixedly mounted on the surface of the long strip plate (8). The electric telescopic rod (15) drives the L-shaped bracket (10) to move inside the groove (9).

5. A plastic container processing mold according to claim 4, characterized in that: The mold box (4) has a limiting device (3) on one side surface for positioning the upper mold (12). The limiting device (3) includes an L-shaped rod (31) fixedly installed on one side surface of the mold box (4) and an extension rod (32) that slides inside it. A limiting ring (33) is fixedly installed at the end of the extension rod (32) away from the L-shaped rod (31). The gap between the inner diameter of the limiting ring (33) and the outer diameter of the upper mold (12) is less than or equal to 0.5 mm, forming a ring-shaped fit for limiting.

6. A plastic container processing mold according to claim 5, characterized in that: The limiting device (3) also includes a sliding rod (34) fixedly installed on the outer wall surface of the L-shaped rod (31) and a movable plate (35) that slides on its surface. A plug rod (36) is fixedly installed on the surface of the movable plate (35). A plurality of plug holes (37) matching the plug rod (36) are evenly opened on the outer wall surface of the extension rod (32).

7. A plastic container processing mold according to claim 6, characterized in that: A circular plate (38) is fixedly installed on the surface of the slide bar (34) away from the L-shaped rod (31), and a spring (39) is fixedly installed between the circular plate (38) and the movable plate (35).

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