Blow molding equipment
By designing a blow molding equipment including slide rails, moving rods, cutters and rubber wheels, the problems of low cutting efficiency and inconvenient cutting of molds in the prior art are solved, and efficient cutting and stable cutting knife movement are achieved.
Patent Information
- Application Number
- CN202510163466.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-14
- Publication Date
- 2025-05-16
- Estimated Expiration
- Not applicable · inactive patent
AI Technical Summary
When handling molds of different shapes, existing blow molds and cutters need to be frequently replaced, resulting in low processing efficiency and inconvenient processing of residual materials.
A blow molding device including a mold, an extrusion cylinder, a slide rail, a moving rod, a fixing block, a cutter, a support block and a rubber wheel is designed. Through the cooperation of the slide rail and the moving rod, the cutter can be cut according to the edge movement of the mold in different shapes, and contact with the inner side of the mold through the rubber wheel to achieve support and stability of the cutter.
It realizes efficient cutting of molds of different shapes, reduces the frequency of mold replacement and knife adjustment, improves processing efficiency, and ensures the stability and cutting accuracy of the cutter through the design of rubber wheels.
Smart Images
Figure CN120002994A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the field of plastic processing, and more particularly to a blow molding device. Background Art
[0002] Blow molding technology is a rapidly developing plastic processing method. The cylindrical plastic parison obtained by extrusion or injection molding of thermoplastic resin is placed in a split mold while hot. After the mold is closed, compressed air is immediately introduced into the parison to inflate the plastic parison and cling to the inner wall of the mold. After cooling and demolding, various hollow products are obtained. When encountering different types of blow molded products, it is usually necessary to remove the unmatched blow mold with tools, and then install the corresponding blow mold under the blow molding head with tools. After changing different molds, it is necessary to replace different cutters according to the shape of the mold to cut the excess plastic. Summary of the invention
[0003] The invention provides a blow molding device, aiming to meet the requirements of cutting residual materials after processing molds of different shapes.
[0004] The above purpose is achieved through the following technical solutions:
[0005] A blow molding device comprises a mold, an extrusion cylinder is arranged above the mold, two slide rails are arranged in parallel between the mold and the extrusion cylinder, a moving rod is slidably connected between the two slide rails, two fixed blocks are slidably connected to the moving rod, a cutter is fixed between the two fixed blocks, each fixed block is slidably connected to a support block, each support block is rotatably connected to a plurality of rubber wheels, and each rubber wheel contacts the inner side of the corresponding mold on the same side.
[0006] A first threaded rod is rotatably connected to the slide rail, and the first threaded rod is threadably connected to the moving rod.
[0007] Both ends of the two slide rails are fixedly connected with a lower rail and an upper rail, each fixed block is fixedly connected with a tension spring between the moving rod, the upper end of each fixed block is slidably connected with the corresponding upper rail, each support block is fixedly connected with a spring between the corresponding fixed block, and each support block is slidably connected with the corresponding lower rail. BRIEF DESCRIPTION OF THE DRAWINGS
[0008] Figure 1 It is a schematic diagram of the overall structure of a blow molding equipment;
[0009] Figure 2 It is a structural schematic diagram of the upper fixed plate part;
[0010] Figure 3 It is a structural schematic diagram of the slide rail part;
[0011] Figure 4 It is a structural schematic diagram of the moving rod part;
[0012] Figure 5 It is a structural schematic diagram of the extrusion cylinder part;
[0013] Figure 6 It is a structural schematic diagram of the skateboard part;
[0014] Figure 7 It is a structural schematic diagram of the slide seat part;
[0015] Figure 8 It is a structural schematic diagram of the clamping rod part;
[0016] Fig. 9 It is a structural schematic diagram of a bidirectional telescopic rod part;
[0017] Fig.10 It is a structural schematic diagram of the lifting plate part;
[0018] Fig.11 It is a structural schematic diagram of the connecting plate part.
[0019] In the figure: bracket 11; upper fixed plate 101; base 102; crossbeam 103; slide rail 12; lower rail 201; upper rail 202; first threaded rod 203; moving rod 13, fixed block 301; cutter 302; support block 303; rubber wheel 304; mold 14; clamping rod 401; tension spring 402; slide seat 403; inclined rail 404; lifting plate 405; bellows 406; connecting plate 407; two-way telescopic rod 408; extrusion cylinder 15; inner cylinder 501; slide plate 502; second threaded rod 503; connecting rod 504; separation knife 505. DETAILED DESCRIPTION
[0020] In the description of the present invention, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.
[0021] The present invention will be further described below in conjunction with the accompanying drawings.
[0022] like Figures 1 to 3 , to solve the problem of cutting molds of different shapes.
[0023] The extrusion cylinder 15 is arranged above the mold 14, and two slide rails 12 are arranged in parallel between the mold 14 and the extrusion cylinder 15. A moving rod 13 is slidably connected between the two slide rails 12. Two fixed blocks 301 are slidably connected under the moving rod 13. The cutter 302 is welded between the two fixed blocks 301. Each fixed block 301 is slidably connected to a support block 303. Each support block 303 is rotatably connected to a plurality of rubber wheels 304, and each rubber wheel 304 contacts the inner side of the corresponding mold 14 on the same side.
[0024] During processing, the raw material is first melted and then extruded downward through the extrusion cylinder 15, and then the two molds 14 are moved inward so that the extruded cylindrical plastic is located between the two molds 14. At the same time, the cylindrical plastic is cut from the top and gas is blown into the inside from the bottom to perform blow molding. Then, the two molds 14 are moved to both sides to reset, and the moving rod 13 is further driven to move in the slide rail 12, thereby driving the two fixed blocks 301 to move synchronously, and the two support blocks 303 follow the movement of the fixed blocks 301. Initially, the rubber wheel 304 on the support block 303 moves inside the mold 14, thereby supporting the two fixed blocks 301, so that it can move up and down according to the shape of the product, thereby driving the two fixed blocks 301 and the cutter 302 welded therein to move synchronously, so that it can cut according to the edges of molds of different shapes.
[0025] like Figure 2 and Figure 3 , to solve the problem of moving the moving rod 13.
[0026] The first threaded rod 203 is rotatably connected to the slide rail 12 , and the first threaded rod 203 is threadably connected to the moving rod 13 .
[0027] A gear is fixedly connected to one end of the first threaded rod 203, and a motor is provided on the slide rail 12. A gear is provided on the output shaft of the motor. The two gears are meshed and transmitted to drive the motor to work, thereby driving the gear to rotate, thereby driving the first threaded rod 203 to rotate, and then the thread drives the moving rod 13 to move in the slide rail 12. By controlling the forward and reverse rotation of the motor, the first threaded rod 203 is driven to rotate reciprocatingly, thereby causing the cutter 302 to reciprocate to cut the parts.
[0028] like Figures 2 to 4 , in order to solve the problem of movement of the support block 303.
[0029] The two ends of the two slide rails 12 are fixedly connected to the lower rail 201 and the upper rail 202, each fixed block 301 is fixedly connected to the moving rod 13 with a tension spring, the upper end of each fixed block 301 is slidably connected to the corresponding upper rail 202, each support block 303 is fixedly connected to the corresponding fixed block 301 with a spring, and each support block 303 is slidably connected to the corresponding lower rail 201.
[0030] The tension spring between the fixed block 301 and the moving rod 13 pulls the fixed block 301. When it moves into the mold 14, it drives the support block 303 to always contact the upper surface of the inner side of the mold 14, thereby ensuring that the cutter 302 can move according to the shape of the part. At the same time, the spring between the support block 303 and the fixed block 301 ensures that the support block 303 can always contact the upper surface of the mold 14 during the movement of the fixed block 301, thereby preventing it from escaping from the mold 14. When the mold 14 needs to be moved for blow molding, the support block 303 03 is located on the lower rail 201, and the distance between the two lower rails 201 is less than or equal to the distance between the two molds 14, thereby avoiding collision between the support block 303 and the mold 14, affecting the movement of the fixed block 301, and the upper end of the fixed block 301 is initially slidably connected to the upper rail 202, thereby avoiding the tension spring pulling the fixed block 301 too high and causing it to exceed the internal gap of the mold 14. Preferably, a detachable connection is set between the upper rail 202 and the slide rail 12, so that it can meet the needs of molds 14 with different part heights.
[0031] like Figure 5 and Figure 6 , in order to solve the problem of extruding the raw materials into a cylindrical shape.
[0032] An upper fixing plate 101 is welded to the bracket 11 , and an extrusion cylinder 15 is welded to the upper fixing plate 101 . An inner cylinder 501 is detachably connected to the extrusion cylinder 15 .
[0033] The top of the extrusion cylinder 15 is connected to the melting equipment. After the plastic raw material is melted, it is sent into the extrusion cylinder 15. The inner cylinder 501 is concentrically arranged with the extrusion cylinder 15, and the raw material is extruded and formed from the gap between the two. At the same time, a cooling device is arranged outside the inner cylinder 501 to perform preliminary cooling on it to prevent the molten plastic from deforming. The inner cylinder 501 and the extrusion cylinder 15 are detachably connected, which makes it easy to replace the inner cylinder 501 with different diameters, so that the extruded cylindrical plastic can meet different thickness requirements.
[0034] like Figure 5 and Figure 6 , in order to solve the problem of cutting and separating cylindrical plastics.
[0035] The two separation knives 505 are slidably connected below the fixing plate 101 .
[0036] After the cylindrical plastic is extruded from the extrusion cylinder 15 by the two separation knives 505, the two molds are driven to extrude inwards, and then the two separation knives 505 are driven to move inwards, thereby cutting the cylindrical plastic and separating it from the top. A heating device is provided in the separation knife 505 to make its temperature the same as the temperature of the cylindrical plastic at the outlet of the extrusion cylinder 15, thereby preventing the cylindrical plastic from being rapidly cooled and sticking after coming into contact with the overcooled separation knife 505.
[0037] like Figure 5 and Figure 6 , in order to solve the problem of synchronously moving the two separation knives 505 at the same time.
[0038] A second threaded rod 503 is rotatably connected to the upper fixed plate 101, and a slide plate 502 is slidably connected to the extrusion cylinder 15. The second threaded rod 503 and the slide plate 502 are threadedly connected. Two cross-arranged connecting rods 504 are rotatably connected on both sides of the upper fixed plate 101. Each of the two ends of the connecting rod 504 is provided with a groove. The upper fixed plate 101 and the slide plate 502 are slidably connected in the corresponding grooves, and the two separation knives 505 are slidably connected in the corresponding grooves.
[0039] The second threaded rod 503 is driven to rotate, and then the thread drives the slide plate 502 to move upward, so that the upper end of each connecting rod 504 rotates inward, and then rotates relative to the upper fixed plate 101, so that the lower end of each connecting rod 504 rotates inward, and then drives the two separation knives 505 to move inward. Each connecting rod 504 is provided with a groove to meet the transmission between linear motion and rotation, so as to avoid jamming.
[0040] like Figure 7 and Figure 8 , to solve the problem of mold movement.
[0041] Two bases 102 are welded below the bracket 11 , a crossbeam 103 is welded between the two bases 102 , two slide seats 403 are slidably connected to the crossbeam 103 , and each slide seat 403 is fixedly connected to the corresponding mold 14 by screws.
[0042] A moving end of an electric push rod is fixed to each slide 403 by screws. The two electric push rods are fixed to the bracket 11, driving the two electric push rods to extend and retract synchronously, thereby driving the slide 403 to move on the beam 103, thereby moving the two molds 14. The molds 14 and the slide 403 are fixed by screws, thereby facilitating the replacement of the molds 14.
[0043] like Figure 7 and Fig.10 , to solve the problem of blowing air into the mold 14.
[0044] An inclined rail 404 is fixedly connected to each base 102 , a lifting plate 405 is slidably connected between the two inclined rails 404 , an air jet is fixedly connected to the lifting plate 405 , a bellows 406 is fixedly connected to the air jet, an air pump is provided on the base 102 , and the air pump outlet is connected to the bellows 406 .
[0045] When the base 102 moves, it drives the inclined rails 404 to move synchronously. The inclined rails 404 on both sides are cross-arranged, and the lifting plate 405 is slidably connected to the two inclined rails 404. Then, as the two bases 102 approach, the intersection of the two inclined rails 404 moves upward, and then the lifting plate 405 moves upward, and then drives the jet port to move into the mold 14. Then, the air pump blows air through the bellows 406 and the jet port into the mold 14 for blow molding. When the parts are removed, the two bases 102 are driven to move in the opposite direction. At this time, the parts are taken out of the mold 14, located on the lifting plate 405 and move downward to separate from the mold.
[0046] like Figures 8 to 11 , in order to solve the problem of fixing parts when cutting the remaining materials.
[0047] Two clamping rods 401 are slidably connected to each mold 14 , a tension spring 402 is fixedly connected between each clamping rod 401 and the mold 14 , and a connecting plate 407 is fixedly connected to the two clamping rods 401 on the same side.
[0048] When blow molding is completed, the mold 14 is driven to separate, and the connecting plate 407 is controlled to be stationary, so that the clamping rods 401 on both sides clamp the parts, and then the crossbeam 103 is driven to move, driving the cutter 302 to cut the parts. The size of the clamping rod 401 is smaller than the size of the parts, which makes it easier to cut them, and then the clamping rods 401 on both sides are moved to separate the parts.
[0049] like Figures 8 to 11 , in order to solve the problem of movement of the connecting plate 407.
[0050] A bidirectional telescopic rod 408 is fixedly connected to the upper fixed plate 101 , and two connecting plates 407 are respectively fixedly connected to two movable ends of the bidirectional telescopic rod 408 .
[0051] The bidirectional telescopic rod 408 is controlled to extend or shorten, thereby driving the two connecting plates 407 to move. A tension spring 402 is provided between the clamping rod 401 and the mold 14, so as to facilitate buffering during the process of the connecting plate 407 driving the clamping rod 401 to move, thereby avoiding damage to the blow-molded parts.
Claims
1. A blow molding device, characterized in that: The invention comprises a mould (14), an extrusion cylinder (15) is arranged above the mould (14), two slide rails (12) are arranged in parallel between the mould (14) and the extrusion cylinder (15), a moving rod (13) is slidably connected between the two slide rails (12), two fixed blocks (301) are slidably connected to the moving rod (13), a cutter (302) is fixedly connected between the two fixed blocks (301), each fixed block (301) is slidably connected to a support block (303), each support block (303) is rotatably connected to a plurality of rubber wheels (304), and each rubber wheel (304) is in contact with the inner side of the corresponding mould (14) on the same side.
2. The blow molding device according to claim 1, characterized in that: A first threaded rod (203) is rotatably connected to the slide rail (12), and the first threaded rod (203) and the moving rod (13) are threadedly connected.
3. The blow molding device according to claim 2, characterized in that: Both ends of the two slide rails (12) are fixedly connected to a lower rail (201) and an upper rail (202); each fixed block (301) is fixedly connected to a moving rod (13) with a tension spring; the upper end of each fixed block (301) is slidably connected to the corresponding upper rail (202); each support block (303) is fixedly connected to the corresponding fixed block (301) with a spring; and each support block (303) is slidably connected to the corresponding lower rail (201).
4. The blow molding device according to claim 3, characterized in that: The invention comprises a bracket (11), an upper fixing plate (101) is fixedly connected to the bracket (11), an extrusion cylinder (15) is fixedly connected to the upper fixing plate (101), and an inner cylinder (501) is detachably connected inside the extrusion cylinder (15).
5. The blow molding device according to claim 4, characterized in that: Two separation knives (505) are slidably connected below the upper fixed plate (101).
6. The blow molding device according to claim 5, characterized in that: The upper fixed plate (101) is rotatably connected to a second threaded rod (503), the extrusion cylinder (15) is slidably connected to a slide plate (502), the second threaded rod (503) and the slide plate (502) are threadedly connected, two cross-arranged connecting rods (504) are rotatably connected to both sides of the upper fixed plate (101), each connecting rod (504) is provided with a groove at both ends, the upper fixed plate (101) and the slide plate (502) are slidably connected in the corresponding grooves, and the two separation knives (505) are slidably connected in the corresponding grooves.
7. The blow molding device according to claim 4, characterized in that: Two bases (102) are fixedly connected below the bracket (11), a crossbeam (103) is fixedly connected between the two bases (102), two slide seats (403) are slidably connected to the crossbeam (103), and each slide seat (403) is fixedly connected to the corresponding mold (14).
8. The blow molding device according to claim 7, characterized in that: Each of the bases (102) is fixedly connected to an inclined rail (404), a lifting plate (405) is slidably connected between the two inclined rails (404), an air jet is fixedly connected to the lifting plate (405), a bellows (406) is fixedly connected to the air jet, an air pump is provided on the base (102), and an air outlet of the air pump is connected to the bellows (406).
9. The blow molding device according to claim 8, characterized in that: Each of the molds (14) is slidably connected to two clamping rods (401), a tension spring (402) is fixedly connected between each clamping rod (401) and the mold (14), and a connecting plate (407) is fixedly connected to the two clamping rods (401) on the same side.
10. The blow molding device according to claim 9, characterized in that: A bidirectional telescopic rod (408) is fixedly connected to the upper fixed plate (101), and two connecting plates (407) are respectively fixedly connected to two movable ends of the bidirectional telescopic rod (408).