Quick release type plastic suction mold

Abstract

The utility model relates to a plastic uptake mold, in particular to a quick-release plastic uptake mold. According to the technical scheme, the quick-disassembly type plastic uptake mold comprises fixing seats, two-way lead screws, hand wheels, clamping blocks and the like, the two fixing seats are symmetrically distributed up and down, cavities are formed in the two fixing seats, the two-way lead screws are rotationally connected between the left sides and the right sides of the two fixing seats, and the two-way lead screws are rotationally connected between the left sides and the right sides of the two fixing seats. The two bidirectional lead screws are located in the cavities of the fixing seats on the same side, the left ends and the right ends of the two bidirectional lead screws are fixedly connected with hand wheels, the left ends and the right ends of the two bidirectional lead screws are connected with clamping blocks in a threaded mode, each clamping block is located between the two hand wheels on the same side, and the two clamping blocks on each bidirectional lead screw are connected with the corresponding fixing seats in a sliding mode. Through the cooperative work of the guide seat, the connecting rod and the buffer spring, when the male die and the female die are closed, the buffer spring absorbs part of impact energy, direct rigid collision of the two dies is prevented, and the effect of reducing damage to the dies caused by collision is achieved.

Description

Technical Field

[0001] This utility model relates to a vacuum forming mold, and more particularly to a quick-release vacuum forming mold. Background Technology

[0002] A vacuum forming mold is a mold used in the vacuum forming process, a plastic molding technique: a process in which a sheet of thermoplastic plastic is heated to a softened state and then pressed tightly against the surface of a mold to form the desired shape through vacuum adsorption or pressure blow molding. After cooling, the plastic sheet hardens into the final product shape. It is mainly used to produce thin-walled parts, such as packaging boxes, trays, and lids. Vacuum forming molds require high precision to ensure the dimensional and appearance quality of the final product. At the same time, in order to ensure that the plastic sheet can adhere tightly to the mold surface, the mold is usually equipped with vent holes or vent grooves to help expel air and improve the forming effect.

[0003] In the vacuum forming process, closing and opening the mold is a crucial step. First, the softened plastic sheet is moved into the lower mold, and then the upper mold is moved downwards, causing the two molds to close completely. After the plastic conforms to the shape of the mold and cools and sets, the two molds are then opened. However, if the impact force during the closing and opening of the molds is too large, it will damage the molds and reduce their service life.

[0004] Therefore, it is necessary to design a quick-release thermoforming mold to solve the above-mentioned technical problems. Utility Model Content

[0005] To overcome the drawback that large impact forces during the closing and opening of two molds can damage the molds and reduce their service life, the technical problem to be solved is to provide a quick-release thermoforming mold.

[0006] The technical implementation scheme of this utility model is as follows: A quick-release thermoforming mold includes a fixed base, a two-way lead screw, a handwheel, a locking block, a mold, a guide seat, a connecting rod, and a buffer spring. The two fixed bases are symmetrically distributed vertically, and each fixed base has a cavity inside. A two-way lead screw is rotatably connected between the left and right sides of the two fixed bases. The two two-way lead screws are located in the cavities of the fixed bases on the same side. A handwheel is fixedly connected to both ends of the two two-way lead screws. A locking block is threadedly connected to both ends of the two two-way lead screws. Each locking block is located between the two handwheels on the same side, and the two locking blocks on each two-way lead screw are slidably connected to the corresponding fixed base. A mold is placed on the side of the two fixed bases that are close to each other, and the two locking blocks on each fixed base are engaged with the corresponding mold. Guide seats are symmetrically fixedly connected to both sides of each fixed base. A connecting rod is slidably connected between the two guide seats that are symmetrically distributed vertically on the same side. A buffer spring is fixedly connected between each connecting rod and the two corresponding guide seats.

[0007] In addition, it is particularly preferred that the device also includes an infusion tube, a threaded tube, and an anti-overflow sleeve. The infusion tube is fixed to the lower inner wall of the upper fixing seat and the infusion tube is fixed to the upper inner wall of the lower fixing seat. Each infusion tube is threaded to both ends and has an anti-overflow sleeve fitted on the outer wall of each threaded tube.

[0008] In addition, it is particularly preferred that the device also includes a vacuum pump, an intake pipe and an exhaust pipe. The exhaust pipes are symmetrically fixed to the inner wall of the upper mounting base, and the bottom of the upper exhaust pipe is flush with the top of the upper mounting base. The exhaust pipes are symmetrically fixed to the inner wall of the lower mounting base, and the top of the lower exhaust pipe is flush with the bottom of the lower mounting base. An intake pipe is fixed to the front end of each exhaust pipe, and a vacuum pump is fixed to the connection between each intake pipe and the exhaust pipe on the same side.

[0009] In addition, it is particularly preferred that a sealing ring is included, with a sealing ring fixed to the inner wall of the opening of each exhaust pipe.

[0010] Furthermore, it is particularly preferred that the spill cover is made of poly(p-phenylenebenzodioxazole) fiber (PBO).

[0011] Furthermore, it is particularly preferred that the connection between the mold and the fixed base is standardized, meaning that the mold can be matched with the fixed base as long as it conforms to the design of the fixed base interface.

[0012] The beneficial effects of this utility model are: 1. Through the coordinated operation of the guide seat, connecting rod and buffer spring, when the punch (male die) and the die (female die) are closed, the buffer spring absorbs part of the impact energy, preventing the two dies from directly colliding hard, thereby reducing the damage caused by the impact.

[0013] 2. This utility model forms a circulating infusion pipeline by working together with the infusion pipe, the threaded pipe and the anti-overflow sleeve, so that the water-based coolant cools the molten plastic, effectively removes the heat from the molten plastic, and achieves the effect of shortening the curing time.

[0014] 3. This utility model, through the coordinated operation of the air inlet pipe, the air outlet pipe, and the sealing ring, allows the molten plastic to adhere tightly to the mold surface, effectively forming the desired shape. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of this utility model.

[0016] Figure 2 This is a partial cross-sectional view of the components of this utility model, including the fixed base, the bidirectional lead screw, and the handwheel.

[0017] Figure 3This is a partial cross-sectional view of the guide seat, connecting rod, and buffer spring components of this utility model.

[0018] Figure 4 This is a partial cross-sectional view of the components of this utility model, including the infusion tube, threaded tube, and anti-overflow sleeve.

[0019] Figure 5 This is a partial cross-sectional view of the vacuum pump, inlet pipe, and exhaust pipe components of this utility model. The reference numerals in the figure are: 1: Fixed base, 2: Bidirectional lead screw, 3: Handwheel, 4: Clamping block, 5: Mold, 6: Guide seat, 7: Connecting rod, 8: Buffer spring, 9: Infusion tube, 10: Threaded tube, 11: Anti-overflow sleeve, 12: Vacuum pump, 13: Inlet pipe, 14: Exhaust pipe, 15: Sealing ring. Detailed Implementation

[0020] 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.

[0021] Example: A quick-release thermoforming mold, such as Figures 1-3 As shown, the device includes a fixed base 1, a double-acting lead screw 2, a handwheel 3, a locking block 4, a mold 5, a guide seat 6, a connecting rod 7, and a buffer spring 8. The two fixed bases 1 are symmetrically distributed vertically, and each fixed base 1 has an internal cavity. A double-acting lead screw 2 is rotatably connected between the left and right sides of each fixed base 1. Both double-acting lead screws 2 are located within the cavities of the fixed base 1 on the same side. Handwheels 3 are welded to both ends of each double-acting lead screw 2. Locking blocks 4 are threadedly connected to both ends of each double-acting lead screw 2. Each locking block 4 is located between the two handwheels 3 on the same side, and each double-acting lead screw... The two locking blocks 4 on the 2 are slidably connected to the corresponding fixed seats 1. The molds 5 are placed on the side of the two fixed seats 1 that are close to each other, and the two locking blocks 4 on each fixed seat 1 are engaged with the corresponding molds 5. That is, as long as the molds 5 meet the design of the interface of the fixed seats 1, they can match the fixed seats 1. The left and right sides of the two fixed seats 1 are symmetrically connected to the guide seats 6 by screws. The two guide seats 6 that are symmetrically distributed on the same side are slidably connected to each other by connecting rods 7. Each connecting rod 7 is welded to the two corresponding guide seats 6 with a buffer spring 8.

[0022] like Figure 1 , Figure 4 and Figure 5As shown, it also includes an infusion tube 9, a threaded tube 10, an overflow sleeve 11, a vacuum pump 12, an air inlet pipe 13, an exhaust pipe 14, and a sealing ring 15. The lower inner wall of the upper fixing seat 1 is connected to the infusion tube 9 by screws, and the upper inner wall of the lower fixing seat 1 is also connected to the infusion tube 9 by screws. Both ends of the two infusion tubes 9 are threadedly connected to the threaded tubes 10. The outer walls of the four threaded tubes 10 are fitted with overflow sleeves 11. The overflow sleeves 11 are made of poly(p-phenylenebenzodioxazole) fiber (PBO). The upper fixing seat 1 contains... The walls are symmetrically connected to exhaust pipes 14 by screws. The bottom of the upper exhaust pipe 14 is flush with the top of the upper fixing seat 1. The inner walls of the lower fixing seat 1 are symmetrically connected to exhaust pipes 14 by screws. The top of the lower exhaust pipe 14 is flush with the bottom of the lower fixing seat 1. The front ends of the two exhaust pipes 14 are connected to air inlet pipes 13 by flanges. Each air inlet pipe 13 is connected to the exhaust pipe 14 on the same side by a vacuum pump 12 by a flange. The inner wall of the pipe opening of each exhaust pipe 14 is covered with a sealing ring 15 by sealant.

[0023] When plastic needs to be vacuum-formed, the worker first installs the quick-release vacuum forming mold into the designated position on the injection molding machine so that molten plastic can be injected into the mold 5 in a timely manner, and the machine can automatically close the mold 5. After the quick-release vacuum forming mold is installed, the worker first connects each infusion tube 9 to other liquid guide tubes. The liquid guided by the liquid guide tubes is a water-based coolant with added rust inhibitors or corrosion inhibitors, so that the circulation system of the infusion tubes 9 will not be blocked while cooling the molten plastic. Then, the worker installs the mold 5 according to the product design requirements. At this time, the worker first rotates one of the two lower handwheels 3 clockwise, causing the lower handwheel 3 to drive the lower double-sided screw 2 to rotate. The left end of the double-ended lead screw 2, locking block 4, moves to the left, and the right end of the double-ended lead screw 2, locking block 4, moves to the right. This means the two lower locking blocks 4 move in opposite directions, increasing the distance between them. The operator then places the die (female mold) on top of the lower fixed base 1 and rotates one of the two lower handwheels 3 counterclockwise. This causes the lower handwheel 3 to rotate the double-ended lead screw 2. At this time, the left end of the double-ended lead screw 2 moves to the right, and the right end of the double-ended lead screw 2 moves to the left. When both lower locking blocks 4 have moved to contact the left and right sides of the die (female mold) and are working together to lock the die (female mold), the counterclockwise rotation of the lower handwheel 3 stops. This completes the fixing of the die (female mold). Similarly, the operator... The operator first rotates one of the two upper handwheels 3 clockwise, causing the upper handwheel 3 to drive the upper double-acting screw 2 to rotate. Simultaneously, the left end of the double-acting screw 2's locking block 4 moves to the left, and the right end of the double-acting screw 2's locking block 4 moves to the right. That is, the two upper locking blocks 4 move in opposite directions, increasing the distance between them. Then, the operator places the punch (male mold) at the bottom of the upper fixed base 1 and manually holds it in place. Next, the operator rotates one of the two upper handwheels 3 counterclockwise, causing the upper handwheel 3 to drive the upper double-acting screw 2 to rotate. At this time, the left end of the double-acting screw 2's locking block 4 moves to the right, and the right end of the double-acting screw 2's locking block 4 moves to the left. When both upper locking blocks 4 have moved to the positions of the left and right ends of the punch (male mold)... The side contact and coordinated operation cause the male mold to lock in place. Then, stop rotating the upper handwheel 3 counterclockwise. This completes the fixing of the male mold. After the above preparations are completed, the operator injects molten plastic into the female mold using an injection molding machine. Once the female mold has been filled with the set amount of molten plastic, the injection molding machine moves the male mold downwards, causing the two molds 5 to close. During this process, as the injection molding machine presses down on the fixing seat 1, causing the male mold to close with the female mold, each connecting rod 7 moves downwards, and each buffer spring 8 is compressed. At this time, the buffer springs 8 can absorb some of the impact energy, preventing the two molds 5 from directly colliding and reducing damage caused by impact.This also allows for a smoother opening of the two molds 5, protecting them from damage and extending their lifespan.

[0024] After the two molds 5 are closed, the operator starts the vacuum pump 12. The vacuum pump 12 begins to work, extracting air from inside the molds 5 through the exhaust pipe 14 to create a localized vacuum environment. This vacuum environment causes the molten plastic to adhere tightly to the surface of the molds 5, forming the desired shape. Each exhaust pipe 14 is distributed in different parts of the molds 5, ensuring that the entire molding area of ​​the molds 5 is evenly stressed. At the same time, the sealing ring 15 prevents molten plastic from being mistakenly sucked in during the vacuuming process. During this process, the operator opens the liquid guide pipe, allowing water-based coolant to indirectly flow through the upper and lower liquid delivery pipes 9. The liquid is fed into the fixed seat 1 and forms a circulation of 9 infusion pipes, which causes the water-based coolant to cool the molten plastic, effectively removing the heat from the molten plastic and allowing the plastic to solidify quickly. At the same time, the anti-overflow sleeve 11 effectively prevents water leakage from the infusion pipes 9. After the plastic has solidified and formed, the operator first cuts off the vacuum source and stops pumping. At this time, the pressure inside and outside the mold 5 tends to be balanced. Then the operator takes out the formed plastic part. At the same time, ejector pins or other mechanical devices can be used to assist in demolding, ensuring that the plastic part is taken out of the mold 5 intact. At this time, one thermoforming operation is completed.

[0025] It should be understood that the above description is for illustrative purposes only and is not intended to limit the present invention. Those skilled in the art will understand that variations of the present invention will be included within the scope of the claims herein.

Claims

1. A quick-release thermoforming mold, characterized in that: The system includes a fixed base (1), a double-acting screw (2), a handwheel (3), a locking block (4), a mold (5), a guide seat (6), a connecting rod (7), and a buffer spring (8). The two fixed bases (1) are symmetrically distributed vertically. Each fixed base (1) has a cavity inside. The left and right sides of the two fixed bases (1) are rotatably connected to the double-acting screw (2). The two double-acting screws (2) are located in the cavities of the fixed bases (1) on the same side. The left and right ends of the two double-acting screws (2) are fixedly connected to the handwheel (3). The left and right ends of the two double-acting screws (2) are threadedly connected to the locking blocks (4). Each locking block (4) is positioned... Between the two handwheels (3) on the same side, and the two locking blocks (4) on each double-acting screw (2) are slidably connected to the corresponding fixed seat (1). A mold (5) is placed on the side of the two fixed seats (1) that are close to each other, and the two locking blocks (4) on each fixed seat (1) are engaged with the corresponding mold (5). Guide seats (6) are symmetrically fixed to the left and right sides of each fixed seat (1). A connecting rod (7) is slidably connected between the two guide seats (6) that are symmetrically distributed on the same side. A buffer spring (8) is fixed between each connecting rod (7) and the two corresponding guide seats (6).

2. A quick-release thermoforming mold according to claim 1, characterized in that: It also includes an infusion tube (9), a threaded tube (10) and an overflow sleeve (11). The lower inner wall of the upper fixing seat (1) is fixed with an infusion tube (9), and the upper inner wall of the lower fixing seat (1) is fixed with an infusion tube (9). Each infusion tube (9) is threaded to both ends of the left and right ends with a threaded tube (10), and each threaded tube (10) is fitted with an overflow sleeve (11) on its outer wall.

3. A quick-release thermoforming mold according to claim 2, characterized in that: It also includes a vacuum pump (12), an air inlet pipe (13) and an exhaust pipe (14). The exhaust pipe (14) is symmetrically fixed to the inner wall of the upper fixed seat (1). The bottom of the upper exhaust pipe (14) is flush with the top of the upper fixed seat (1). The exhaust pipe (14) is symmetrically fixed to the inner wall of the lower fixed seat (1). The top of the lower exhaust pipe (14) is flush with the bottom of the lower fixed seat (1). The front end of each exhaust pipe (14) is fixed to an air inlet pipe (13). The connection between each air inlet pipe (13) and the exhaust pipe (14) on the same side is fixed to a vacuum pump (12).

4. A quick-release thermoforming mold according to claim 3, characterized in that: It also includes a sealing ring (15), and the inner wall of the opening of each exhaust pipe (14) is fixed with a sealing ring (15).

5. A quick-release thermoforming mold according to claim 4, characterized in that: The spill sleeve (11) is made of poly(p-phenylene benzodioxazole) fiber (PBO).

6. A quick-release thermoforming mold according to claim 5, characterized in that: The connection between the mold (5) and the fixed base (1) is standardized, that is, as long as the mold (5) conforms to the design of the interface of the fixed base (1), it can be matched with the fixed base (1).

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