Plastic bottle cap water-cooled rapid forming die

Abstract

The utility model relates to a plastic bottle cap water -cooling rapid forming die, and relates to bottle cap processing technical field, the lower side of bottom plate is provided with mounting plate, the upper surface of mounting plate is fixed with support rod in four corners, and the upper end of support rod is fixed on the lower side wall of bottom plate, the lower die rod is in matrix form and is inserted and is through bearing and is connected in the lower die module, the upper side of lower die rod is correspondingly hung with upper die tube, and upper die tube is inserted and is fixed in the upper die module, and a plurality of antiskid grooves are arranged on the inner ring wall of upper die tube at equal angles, the demoulding mechanism is arranged in the lower die module, the demoulding mechanism is connected with lower die rod, and the front and rear two side walls of lower die module are all equipped with vent hole, the cooling mechanism is correspondingly arranged in the lower die rod, and can be cooled in time after injection moulding, thereby cooling time is reduced, and work efficiency is improved.

Description

Technical Field

[0001] This invention relates to the field of bottle cap processing technology, specifically to a water-cooled rapid prototyping mold for plastic bottle caps. Background Technology

[0002] Plastic bottle caps are generally made from polyolefins as the main raw material, and are processed through injection molding, hot pressing and other processes. The process flow of plastic bottle caps mainly includes feeding, injection molding, joining, UV curing, hot stamping or printing and assembly. The injection molding process mainly includes heating plastic granules to melt them, pouring them into the corresponding mold for cooling and molding, and finally demolding to make plastic bottle caps. However, the molds in the existing technology cannot be cooled quickly, which makes the cooling time long and reduces work efficiency. Summary of the Invention

[0003] The purpose of this invention is to address the shortcomings and deficiencies of existing technologies by providing a reasonably designed and easy-to-use water-cooled rapid prototyping mold for plastic bottle caps. This mold allows for timely water cooling after injection molding, thereby reducing cooling time and improving work efficiency.

[0004] To achieve the above objectives, the technical solution adopted by the present invention is as follows: it comprises a base plate, a top plate, an upper module, and a lower module; the lower module is disposed on the upper side wall of the base plate, the upper module is suspended above the lower module, and the top plate is disposed on the top wall of the upper module; it further comprises:

[0005] Mounting plate, the mounting plate is set on the lower side of the base plate, and support rods are fixed at the four corners of the upper surface of the mounting plate. The upper end of the support rods is fixed to the lower side wall of the base plate.

[0006] The lower mold rods are several in number and are inserted in a matrix and screwed into the lower module by bearings;

[0007] The upper mold tube consists of several tubes, each corresponding to the one above the lower mold rod. The upper mold tube is inserted into and fixed inside the upper module. Several anti-slip grooves are provided at equal angles on the inner ring wall of the upper mold tube.

[0008] The demolding mechanism is located inside the lower module and is connected to the lower mold rod. Ventilation holes are provided on both the front and rear side walls of the lower module.

[0009] The cooling mechanism comprises several components, each corresponding to one another within the lower mold rod.

[0010] The above technical solution involves fixing the mounting plate to the movable end inside the injection molding machine and fixing the top plate to the fixed end inside the injection molding machine. During molding, the movable end of the injection molding machine moves the mounting plate to one side of the top plate until the upper and lower modules abut against each other. At this point, the lower mold rod is inserted into the upper mold tube, and plastic granules are injected into the upper mold tube through the upper module. After injection, the cooling mechanism is activated to accelerate the cooling speed of the plastic granules, thereby increasing the molding speed. After the bottle cap is formed, the injection molding machine moves the mounting plate to the side away from the top plate. At the same time, the demolding mechanism can be used for demolding, making it easy to remove the molded bottle cap.

[0011] As a further improvement of the present invention, protective pads are embedded and fixed on the adjacent side walls of the upper module and the lower module.

[0012] Through the above technical solution, when the upper and lower modules collide in relative motion, the protective pads provide shock absorption, thereby improving the service life of the upper and lower modules.

[0013] As a further improvement of the present invention, the demolding mechanism includes:

[0014] The linkage gears consist of four gears, which are fitted one-to-one and fixed on the middle end of the lower mold rod. The linkage gears are connected by a toothed belt.

[0015] The worm gear is sleeved and fixed on the lower end of one of the lower mold rods. The worm gear is located inside the lower module. A worm is meshed on one side of the worm gear. The front and rear ends of the worm are respectively screwed to the front and rear inner walls of the lower module through bearings.

[0016] The drive gear is sleeved and fixed on the rear end of the worm gear. One side of the drive gear passes through one side wall of the lower module and is suspended on the upper side of the base plate.

[0017] The linkage rack is fixed on the lower surface of the top plate. After the linkage rack moves through the bottom plate, it is suspended on the upper side of the mounting plate. The linkage rack is meshed with the drive gear.

[0018] Through the above technical solution, during the movement of the lower module, the formed bottle cap moves downward a certain distance from inside the upper mold tube. At the same time, the lower module drives the drive gear to move. When the drive gear meshes with the linkage rack, the drive gear rotates, which drives the worm to rotate. The worm drives the worm wheel to rotate, and the worm wheel drives the lower mold rod connected to it to rotate. The lower mold rod drives several other linkage gears to rotate through the linkage gear and toothed belt on it. The linkage gears then drive the lower mold rod inside them to rotate. The threads on the lower mold rod separate from the threads on the inner wall of the formed bottle cap, thus facilitating demolding.

[0019] As a further improvement of the present invention, a sliding bar is fixed on the side wall of the linkage rack away from the drive gear, and the sliding bar is slidably disposed in a groove on the base plate;

[0020] The above technical solution can increase the stability of the linkage rack by using a sliding bar.

[0021] As a further improvement of the present invention, the cooling mechanism includes:

[0022] The cold water tank is inserted into the lower side of the lower mold rod, and the lower side wall of the cold water tank is fixedly connected to the inner bottom wall of the lower module through a support block.

[0023] A sealing cover is provided on the upper side inside the cold water tank, and the convex ring on the lower side of the outer ring wall of the sealing cover is movably inserted into the annular groove on the inner ring wall of the cold water tank.

[0024] A semiconductor cooling chip is embedded and fixed on a side wall of the cold water tank away from the center of the lower module, and the semiconductor cooling chip is located inside the vent hole.

[0025] The cooling pipe is arranged in a U-shape with its ends connected. The cooling pipe is embedded in the upper side of the lower mold rod, and the lower end of the cooling pipe is fixed through the sealing cover plate and suspended in the cold water tank.

[0026] The conveying pipe is fixed to the upper end of the cooling pipe, and the lower end of the conveying pipe is inserted into and fixed in the center of the sealing cover plate.

[0027] The pump is fixed on the inner bottom wall of the cold water tank. The inlet of the pump is adjacent to the semiconductor cooling chip. The pipe on the outlet of the pump is inserted into the lower end of the delivery pipe through a sealed bearing.

[0028] The above technical solution involves starting a pump to draw coolant from the cold water tank into a delivery pipe, which then enters the cooling pipe and is transported back to the cold water tank via the lower end of the cooling pipe. The semiconductor cooling chip cools the coolant in the cold water tank, making it easier to reuse.

[0029] As a further improvement of the present invention, a filter screen is provided on the upper side of the interior of the cold water tank, and the filter screen is located on the lower side of the cooling pipe.

[0030] With the above technical solution, the coolant flowing out of the cooling pipe can be filtered through a filter screen first.

[0031] As a further improvement of the present invention, the top plate and the bottom plate are symmetrically embedded with bidirectional lead screws. The two ends of the bidirectional lead screws are respectively screwed to the two inner walls of the top plate and the bottom plate through bearings. The two bidirectional lead screws symmetrically front and rear are connected by a synchronous wheel transmission assembly. A drive motor is fixed to one end of the two bidirectional lead screws on the front side. The drive motor is connected to the power supply of the injection molding machine. A moving block is screwed to both ends of the bidirectional lead screws through threads. After the moving block passes through the sliding grooves on the side wall of the top plate and the bottom plate, an insert plate is fixed thereon. The insert plate is respectively inserted into the slots on the side wall of the upper module and the lower module.

[0032] With the above technical solution, when the lower module and the upper module need to be replaced, the drive motors on the upper and lower sides are started respectively. The drive motors drive the bidirectional lead screw connected to them to rotate. The bidirectional lead screw drives another bidirectional lead screw to rotate through the synchronous wheel transmission assembly. The bidirectional lead screw drives the insert plate to move through the moving blocks at both ends, so that the insert plate is separated from the upper module and the lower module, thereby facilitating replacement.

[0033] As a further improvement of the present invention, the upper and lower sides of the insert plate away from the side wall of the moving block are both chamfered;

[0034] The above technical solution facilitates the insertion of the insert plate into the slot during the fixing process.

[0035] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0036] 1. During injection molding, the plastic particles are filled into the anti-slip grooves, thus forming anti-slip patterns on the outside of the bottle cap, which helps to twist the bottle cap.

[0037] 2. A cooling mechanism is provided inside the lower mold rod, which can cool the bottle cap after injection molding, thereby reducing cooling time and improving work efficiency;

[0038] 3. During the separation of the upper and lower modules, the lower mold rod can be rotated by the demolding mechanism, thereby automatically demolding the formed bottle cap and improving the portability of operation. Attached Figure Description

[0039] Figure 1 This is a schematic diagram of the structure of the present invention.

[0040] Figure 2 This is an exploded view of the present invention.

[0041] Figure 3 This is a schematic diagram of the internal structure of the lower module in this invention.

[0042] Figure 4 This is an exploded view of the cooling mechanism and the lower mold rod in this invention.

[0043] Figure 5This is a schematic diagram of the internal structure of the upper mold tube in this invention.

[0044] Explanation of reference numerals in the attached figures:

[0045] 1. Base plate; 2. Top plate; 3. Upper module; 4. Lower module; 4-1. Vent hole; 5. Mounting plate; 6. Support rod; 7. Lower mold rod; 8. Upper mold tube; 8-1. Anti-slip groove; 9. Demolding mechanism; 9-1. Linkage gear; 9-2. Worm gear; 9-3. Drive gear; 9-4. Linkage rack; 9-5. Cooling mechanism; 10. Cold water tank; 10-1. Sealing cover plate; 10-2. Semiconductor cooling chip; 10-3. Cooling pipe; 10-4. Conveying pipe; 10-5. Pump; 10-6. Protective pad; 11. Sliding strip; 12. Filter screen; 13. Bidirectional lead screw; 14. Drive motor; 15. Moving block; 16. Insert plate; 17. Detailed Implementation

[0046] The invention will now be further described with reference to the accompanying drawings. Example 1:

[0047] like Figures 1-5 As shown, this embodiment includes a base plate 1, a top plate 2, an upper module 3, and a lower module 4. The lower module 4 is mounted on the upper side wall of the base plate 1, and the upper module 3 is suspended above the lower module 4. The top plate 2 is mounted on the top wall of the upper module 3. Protective pads 11 are embedded and fixedly attached to the adjacent side walls of the upper module 3 and the lower module 4. When the upper module 3 and the lower module 4 collide relative to each other, the protective pads 11 provide shock absorption, thereby improving the service life of the upper module 3 and the lower module 4. It also includes:

[0048] Mounting plate 5 is located on the lower side of base plate 1. Support rods 6 are welded and fixed to the four corners of the upper surface of mounting plate 5. The upper end of the support rods 6 is welded and fixed to the lower side wall of base plate 1.

[0049] The lower mold rod 7 consists of several rods arranged in a matrix and screwed into the lower module 4 via bearings.

[0050] The upper mold tube 8 consists of several tubes, each corresponding to the upper side of the lower mold rod 7. The upper mold tube 8 is inserted into and welded to the upper module 3. Several anti-slip grooves 8-1 are formed at equal angles on the inner ring wall of the upper mold tube 8.

[0051] Demolding mechanism 9 is provided inside the lower module 4 and is connected to the lower mold rod 7. Ventilation holes 4-1 are provided on both the front and rear side walls of the lower module 4.

[0052] The cooling mechanism 10 consists of several units, each corresponding to one another within the lower mold rod 7. Example 2:

[0053] See Figure 1-3 As shown, based on Embodiment 1, the demolding mechanism 9 includes:

[0054] Linkage gears 9-1, there are four linkage gears 9-1, and they are fitted one-to-one and welded to the middle end of the lower mold rod 7. The linkage gears 9-1 are connected by a toothed belt.

[0055] Worm gear 9-2 is sleeved and fixed on the lower end of the lower mold rod 7 on the left front side. Worm gear 9-2 is located inside the lower module 4. Worm 9-3 is meshed on the left side of worm gear 9-2. The front and rear ends of worm 9-3 are respectively screwed to the front and rear inner walls of the lower module 4 through bearings.

[0056] The drive gear 9-4 is sleeved and welded to the rear end of the worm 9-3. The left side of the drive gear 9-4 passes through one side wall of the lower module 4 and is suspended on the upper side of the base plate 1.

[0057] Linkage rack 9-5 is fixed to the lower surface of top plate 2 by bolts. After passing through bottom plate 1, linkage rack 9-5 is suspended on the upper side of mounting plate 5. Linkage rack 9-5 is meshed with drive gear 9-4.

[0058] A sliding bar 12 is welded and fixed on the side wall of the linkage rack 9-5 away from the drive gear 9-4. The sliding bar 12 is slidably disposed in the groove on the base plate 1, which can increase the stability of the linkage rack 9-5. Example 3:

[0059] See Figure 4 As shown, based on Embodiment 1, the cooling mechanism 10 includes:

[0060] Cold water tank 10-1 is inserted into the lower side of the lower mold rod 7, and the lower side wall of the cold water tank 10-1 is fixedly connected to the inner bottom wall of the lower module 4 by a support block.

[0061] The sealing cover plate 10-2 is located on the upper side inside the cold water tank 10-1. The convex ring on the lower side of the outer ring wall of the sealing cover plate 10-2 is movably inserted into the annular groove on the inner ring wall of the cold water tank 10-1.

[0062] The semiconductor cooling chip 10-3 is embedded in and fixed by bolts to the side wall of the cold water tank 10-1 away from the center of the lower module 4. The semiconductor cooling chip 10-3 is located inside the vent hole 4-1.

[0063] The cooling pipe 10-4 is arranged in a U-shape with its ends connected. The cooling pipe 10-4 is embedded in the upper side of the lower mold rod 7, and the lower end of the cooling pipe 10-4 is fixedly passed through the sealing cover plate 10-2 and suspended in the cold water tank 10-1. A filter screen 13 is provided on the upper side of the inside of the cold water tank 10-1. The filter screen 13 is located on the lower side of the cooling pipe 10-4, and the coolant flowing out of the cooling pipe 10-4 can be filtered by passing through the filter screen 13 first.

[0064] The conveying pipe 10-5 is fixed to the lower end of the cooling pipe 10-4, and the lower end of the conveying pipe 10-5 is inserted into and fixed in the center of the sealing cover plate 10-2.

[0065] The pump 10-6 is fixed to the inner bottom wall of the cold water tank 10-1 by bolts. The water inlet of the pump 10-6 is located adjacent to the semiconductor cooling chip 10-3. The pipe on the water outlet of the pump 10-6 is inserted into the lower end of the delivery pipe 10-5 through a sealed bearing. Example 4:

[0066] See Figure 1-2 As shown in Embodiment 1, both the top plate 2 and the bottom plate 1 are symmetrically embedded with bidirectional lead screws 14. The two ends of the bidirectional lead screws 14 are screwed to the inner walls of the top plate 2 and the bottom plate 1 respectively through bearings. The two bidirectional lead screws 14 are connected to each other through a synchronous wheel transmission assembly. The left ends of the two bidirectional lead screws 14 on the front side are fixed with drive motors 15 by bolts. The drive motors 15 are connected to the power supply of the injection molding machine. The two ends of the bidirectional lead screws 14 are screwed with moving blocks 16. The moving blocks 16 pass through the sliding grooves on the side walls of the top plate 2 and the bottom plate 1 respectively, and then are welded and fixed with insert plates 17. The insert plates 17 are inserted into the slots on the side walls of the upper module 3 and the lower module 4 respectively. The upper and lower sides of the side wall of the insert plate 17 away from the moving block 16 are chamfered, which makes it easy to insert the insert plate 17 into the slot when fixing.

[0067] When using this invention, the mounting plate 5 is fixed to the movable end inside the injection molding machine, and the top plate 2 is fixed to the fixed end inside the injection molding machine. During molding, the movable end of the injection molding machine drives the mounting plate 5 to move to one side of the top plate 2 until the upper module 3 and the lower module 4 abut against each other. At this time, the lower mold rod 7 is inserted into the upper mold tube 8, and plastic granules are injected into the upper mold tube 8 through the upper module 3. After injection, the pumping pump 10-6 is started. The pumping pump 10-6 pumps the coolant in the cold water tank 10-1 into the conveying pipe 10-5, and then into the cooling pipe 10-4. After entering the cooling pipe 10-4, it is transported to the cold water tank 10-1 through the lower end of the cooling pipe 10-4. The semiconductor cooling chip 10-3 cools the coolant in the cold water tank 10-1, thereby facilitating reuse. After the bottle cap is formed, the injection molding machine drives the mounting plate 5 to move away from the top plate 2. During the movement, the lower module 4 causes the formed bottle cap to move downward a certain distance from the upper mold tube 8, and the lower module 4 simultaneously drives... The drive gear 9-4 moves, and when it meshes with the linkage rack 9-5, it rotates, causing the worm 9-3 to rotate. The worm 9-3 then rotates the worm wheel 9-2, which in turn rotates the lower mold rod 7 connected to it. The lower mold rod 7, through its linkage gear 9-1 and toothed belt, drives several other linkage gears 9-1 to rotate. The linkage gears 9-1 then rotate their respective internal lower mold rods 7. The threads on the lower mold rod 7 separate from the threads on the inner wall of the molded bottle cap, facilitating demolding. When the lower module 4 and upper module 3 need to be replaced, the drive motors 15 on the upper and lower sides are started respectively. The drive motors 15 drive the connected bidirectional lead screw 14 to rotate. This bidirectional lead screw 14 drives another bidirectional lead screw 14 to rotate through the synchronous pulley transmission assembly. The bidirectional lead screw 14 drives the insert plate 17 to move through the moving blocks 16 at both ends, causing the insert plate 17 to separate from the upper module 3 and lower module 4, thus facilitating replacement.

[0068] Compared with the prior art, the beneficial effects of this specific embodiment are as follows:

[0069] 1. During injection molding, the plastic particles are filled into the anti-slip grooves 8-1, thus forming anti-slip textures on the outside of the bottle cap, which helps to twist the bottle cap.

[0070] 2. A cooling mechanism 10 is provided inside the lower mold rod 7, which can cool the bottle cap after injection molding, thereby reducing the cooling time and improving work efficiency;

[0071] 3. During the separation of the upper module 3 and the lower module 4, the lower mold rod 7 can be rotated by the demolding mechanism 9, so that the molded bottle cap can be automatically demolded, which improves the portability of operation.

[0072] The above description is only used to illustrate the technical solution of the present invention and is not intended to limit it. Any other modifications or equivalent substitutions made by those skilled in the art to the technical solution of the present invention, as long as they do not depart from the spirit and scope of the technical solution of the present invention, should be covered within the scope of the claims of the present invention.

Claims

1. A water-cooled rapid prototyping mold for plastic bottle caps, characterized in that, It comprises a base plate (1), a top plate (2), an upper module (3), and a lower module (4). The lower module (4) is disposed on the upper side wall of the base plate (1), and the upper module (3) is suspended above the lower module (4). The top plate (2) is disposed on the top wall of the upper module (3). It also comprises: Mounting plate (5), the mounting plate (5) is set on the lower side of the base plate (1), and support rods (6) are fixed at the four corners of the upper surface of the mounting plate (5). The upper end of the support rods (6) is fixed on the lower side wall of the base plate (1). The lower mold rod (7) consists of several rods, which are inserted in a matrix and screwed into the lower module (4) by bearings; The upper mold tube (8) consists of several tubes, each of which is suspended on the upper side of the lower mold rod (7). The upper mold tube (8) is inserted into and fixed inside the upper module (3). Several anti-slip grooves (8-1) are provided at equal angles on the inner ring wall of the upper mold tube (8). A demolding mechanism (9) is provided inside the lower module (4). The demolding mechanism (9) is connected to the lower mold rod (7). Ventilation holes (4-1) are provided on both the front and rear side walls of the lower module (4). The demolding mechanism (9) includes: Linkage gears (9-1), there are four linkage gears (9-1), and they are fitted and fixed one-to-one on the middle end of the lower mold rod (7). The linkage gears (9-1) are connected by a toothed belt. Worm wheel (9-2), the worm wheel (9-2) is sleeved and fixed on the lower end of one of the lower mold rods (7), the worm wheel (9-2) is located inside the lower module (4), and a worm (9-3) is meshed on one side of the worm wheel (9-2). The front and rear ends of the worm (9-3) are respectively screwed to the front and rear inner walls of the lower module (4) through bearings. The drive gear (9-4) is sleeved and fixed on the rear end of the worm (9-3). One side of the drive gear (9-4) passes through one side wall of the lower module (4) and is suspended on the upper side of the base plate (1). Linkage rack (9-5), the linkage rack (9-5) is fixed on the lower surface of the top plate (2), the linkage rack (9-5) moves through the bottom plate (1) and is suspended on the upper side of the mounting plate (5), the linkage rack (9-5) is meshed with the drive gear (9-4); A cooling mechanism (10), comprising several cooling mechanisms (10), each corresponding to one another within the lower mold rod (7); the cooling mechanism (10) includes: Cold water tank (10-1), the cold water tank (10-1) is inserted into the lower side of the lower mold rod (7), and the lower side wall of the cold water tank (10-1) is fixedly connected to the inner bottom wall of the lower module (4) through the support block; A sealing cover plate (10-2) is provided on the upper side inside the cold water tank (10-1). The convex ring on the lower side of the outer ring wall of the sealing cover plate (10-2) is movably inserted into the annular groove on the inner ring wall of the cold water tank (10-1). A semiconductor cooling chip (10-3) is embedded and fixed on a side wall of the cold water tank (10-1) away from the center of the lower module (4), and the semiconductor cooling chip (10-3) is located inside the vent (4-1); Cooling pipe (10-4), the cooling pipe (10-4) is arranged in several U-shapes connected end to end. The cooling pipe (10-4) is embedded in the upper side of the lower mold rod (7), and the lower end of the cooling pipe (10-4) is fixed through the sealing cover plate (10-2) and suspended in the cold water tank (10-1). The conveying pipe (10-5) is fixed to the upper end of the cooling pipe (10-4), and the lower end of the conveying pipe (10-5) is inserted into and fixed in the center of the sealing cover plate (10-2). The pump (10-6) is fixed on the inner bottom wall of the cold water tank (10-1). The water inlet of the pump (10-6) is adjacent to the semiconductor cooling chip (10-3). The pipe on the water outlet of the pump (10-6) is inserted into the lower end of the delivery pipe (10-5) through a sealed bearing.

2. The water-cooled rapid prototyping mold for plastic bottle caps according to claim 1, characterized in that: Protective pads (11) are embedded and fixed on the adjacent side walls of the upper module (3) and the lower module (4).

3. The water-cooled rapid prototyping mold for plastic bottle caps according to claim 1, characterized in that: The linkage rack (9-5) has a sliding bar (12) fixed on the side wall away from the drive gear (9-4), and the sliding bar (12) is slidably disposed in the groove on the base plate (1).

4. The water-cooled rapid prototyping mold for plastic bottle caps according to claim 1, characterized in that: The upper side of the interior of the cold water tank (10-1) is provided with a filter screen (13), which is located on the lower side of the cooling pipe (10-4).

5. The water-cooled rapid prototyping mold for plastic bottle caps according to claim 1, characterized in that: The top plate (2) and the bottom plate (1) are symmetrically embedded with bidirectional lead screws (14). The two ends of the bidirectional lead screws (14) are screwed to the two inner walls of the top plate (2) and the bottom plate (1) respectively through bearings. The two bidirectional lead screws (14) symmetrically connected to each other are connected by a synchronous wheel transmission assembly. A drive motor (15) is fixed on one end of the two bidirectional lead screws (14) on the front side. The drive motor (15) is connected to the power supply of the injection molding machine. A moving block (16) is screwed to both ends of the bidirectional lead screws (14). The moving block (16) passes through the sliding groove on the side wall of the top plate (2) and the bottom plate (1) respectively and is fixed with an insert plate (17). The insert plate (17) is inserted into the slot on the side wall of the upper module (3) and the lower module (4) respectively.

6. The water-cooled rapid prototyping mold for plastic bottle caps according to claim 5, characterized in that: The insert plate (17) is chamfered on both the upper and lower sides of the side wall away from the moving block (16).

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