Side hinge tooth demolding structure

Abstract

The utility model relates to a die. A side edge hinge tooth demolding structure comprises an upper plate mold plate and a lower mold plate, an inclined block guide structure is arranged between the upper mold plate and the lower mold plate, a rack fixing plate and a gear transmission structure are fixed to the upper mold plate and the lower mold plate respectively, a rack is fixed to the rack fixing plate, and the rack is fixed to the gear transmission structure. The gear transmission structure comprises a driving gear and a driven gear which are coaxially arranged, the driving gear is meshed with the rack, the driven gear is meshed with one end of the threaded rod structure, the threaded rod structure penetrates through the inclined block guide structure, and threads are formed at the other end of the threaded rod structure. The utility model provides a side edge hinge tooth demoulding structure which is simple in structure, shortens the production period, improves the productivity of products and saves the cost. The technical problems that in the prior art, a side plate thread machining demolding device is complex in structure, long in production period and high in cost are solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a mould especially relates to a side edge hinge tooth demoulding structure. BACKGROUND

[0002] Mould, industrial production is used to injection moulding, blow moulding, extrusion, die casting or forging pressure forming, smelting, stamping etc. method obtains the required product's all kinds of mould and tool. In brief, mould is used to make the tool of forming article, and the tool is formed by various parts, and different moulds are formed by different parts. In the demoulding process of the mould, the mould reverse buckle or the first and last demoulding part can be produced due to the particularity of the product shape. The screw thread processing of the product side plate is also needed. In the traditional scheme, for the product side edge with screw thread characteristics, the screw thread demoulding is carried out through the cooperation of the oil cylinder, a plurality of gear and chain structures, the structure is complex, the production cycle is long and the cost is high. SUMMARY

[0003] The utility model provides a simple structure, shortens production cycle, improves product's capacity, saves cost's side edge hinge tooth demoulding structure, solves the technical problem that the side plate screw thread processing demoulding device of prior art has, the structure is complex, the production cycle is long, and the cost is high.

[0004] The above technical problem of the utility model is solved by the following technical scheme: a side edge hinge tooth demoulding structure, including upper plate template and lower die plate, be equipped with inclined block guide structure between upper die plate and lower die plate, be fixed with rack fixed plate and gear transmission structure on upper die plate and lower die plate respectively, the rack fixed plate is fixed with the rack, the gear transmission structure includes the driving gear and driven gear of coaxial arrangement, the driving gear is engaged with the rack, the driven gear is engaged with one end of tooth bar structure, the tooth bar structure passes through the inclined block guide structure, the other end of tooth bar structure is formed with screw thread. Drive the gear through the rack, then the gear drives the tooth bar rotation to realize the hinge tooth of side surface, simultaneously, the rack drives the gear movement, and the inclined block guide structure completes demoulding. Only need to increase the rack and gear structure on the side surface of upper and lower die plate, replace the original complex transmission drive structure, make the whole structure simple, high efficiency is realized at the same time, and demoulding and hinge tooth are completed. Reduce the cost.

[0005] As preferred, the tooth bar structure comprises a gear shaft and a pressure bar connected with the gear shaft, the gear shaft is located in the gear transmission structure, one end of the gear shaft is formed with a tooth bar end gear, the tooth bar end gear is engaged with a driven gear, the other end of the gear shaft is provided with a special-shaped hole, the end of the tooth bar is inserted into the special-shaped hole of the gear shaft, the cross section of the end of the tooth bar is the same as the shape of the special-shaped hole, and the tooth bar and the special-shaped hole are clearance fitted. The special-shaped hole is a non-circular hole, which can be triangular, or a waist-shaped hole or a hole with other shapes, as long as the two can rotate synchronously but can move relatively axially. The driven gear cooperates with the tooth bar end gear to drive the tooth bar to rotate, thereby completing the side tooth shaping process, the threaded connection of the end of the tooth bar, the axial movement of the tooth bar into the special-shaped hole, and the retraction of the tooth bar.

[0006] As preferred, a limiting cylinder is formed on the tooth bar, and a limiting hole is formed on the inclined block guide structure. Through the design of the limiting cylinder, the axial movement distance of the tooth bar is limited to prevent over-movement of the tooth bar.

[0007] As preferred, a booster spring is sleeved on the tooth bar. In the mold opening state, the booster tooth bar moves axially, and in the mold closing state, the spring is in a compressed state.

[0008] As preferred, the gear transmission structure comprises an upper cover plate and a lower bottom plate, a rack channel is formed between the upper cover plate and the lower bottom plate, a gear accommodating cavity is arranged on one side of the rack channel, the gear accommodating cavity is arranged on the lower bottom plate, a driving gear and a driven gear are arranged in the gear accommodating cavity and sleeved on a transmission shaft, a through hole for accommodating the gear shaft is arranged on the lower bottom plate, and the through hole is located on the other side of the gear accommodating cavity. The structure is simple, the gear transmission structure is arranged on the side surfaces of the upper and lower mold plates, and the cooperation of the rack and the gear is facilitated.

[0009] As preferred, the inclined block guide structure comprises a shovel and an inclined guide column arranged on the upper mold plate, and a sliding block arranged on the lower mold plate, the sliding block is formed with an inclined guide surface matched with the shovel, and the sliding block is also formed with an inclined hole matched with the inclined guide column. In the mold opening state, the inclined guide column drives the sliding block to move axially, the sliding block is pushed away in the mold opening state, and the mold is closed and sealed in the mold closing state. The shovel is used to press the sliding block to prevent the sliding block from retreating.

[0010] As preferred, the sliding block comprises a first sliding block and a second sliding block connected with each other, a first stepped hole is arranged in the first sliding block, a second stepped hole is arranged in the second sliding block, a large-diameter section of the first stepped hole is connected with a large-diameter section of the second stepped hole to form a limiting hole on the inclined block guide structure, and a limiting cylinder on the tooth bar moves in the limiting hole. The two sliding blocks are convenient for installation and facilitate the machining of the stepped holes to limit the tooth bar. It is also convenient to adapt to the remaining structure in the mold.

[0011] Therefore, the side edge toothed die structure has the following advantages: the toothed die is twisted through linkage of the rack and the gear, the toothed die is demolded during opening of the upper and lower molds, and the opening and the toothed die are synchronously performed. BRIEF DESCRIPTION OF DRAWINGS

[0012] Figure 1 FIG. 1 is a perspective view of a mold opening of a side edge toothed die structure.

[0013] Figure 2 FIG. 2 is a sectional view of the side edge toothed die structure. Figure 1

[0014] Figure 3 FIG. 3 is a perspective view of mold closing of the side edge toothed die structure.

[0015] Figure 4 FIG. 4 is a sectional view of the side edge toothed die structure. Figure 3

[0016] FIG. 5 is a perspective view of the side edge toothed die structure after removal of the lower mold plate. Figure 5 Figure 1 FIG. 6 is a perspective view of the side edge toothed die structure after removal of the upper mold plate.

[0017] Figure 6 DETAILED DESCRIPTION Figure 5 The technical scheme of the utility model will be further specifically explained below by means of examples and in combination with the drawings.

[0018] The technical scheme of the utility model will be further specifically explained below by means of examples and in combination with the drawings.

[0019] Embodiment:

[0020] As shown in FIGS. 1, 2, 3, 4, 5 and 6, a side edge toothed die structure comprises an upper mold plate 1 and a lower mold plate 2, a rack fixing block 4 is fixed on the side surface of the upper mold plate 1, a rack 3 extending downward is installed on the rack fixing block 4, a shovel 7 and an inclined guide column 8 are installed on the bottom surface of the upper mold plate 1, a clamping groove 15 is formed on the lower surface of the shovel 7, and the clamping groove 15 is convenient for connection of a gear transmission structure and a toothed rod structure. Figure 1 2 A first sliding block 11 and a second sliding block 12 are installed on the lower mold plate 2, the side surface of the first sliding block 11 is an inclined surface matched with the inclined surface of the shovel 7, an inclined hole 16 is formed above the first sliding block 11, and the inclined hole 16 is matched with the inclined guide column 8.

[0021] When the mold is opened, the inclined guide column 8 moves in the inclined hole 16, thereby pushing the sliding block to move.

[0022] As shown in FIGS. 1, 2, 3, 4, 5 and 6, a side edge toothed die structure comprises an upper mold plate 1 and a lower mold plate 2, a rack fixing block 4 is fixed on the side surface of the upper mold plate 1, a rack 3 extending downward is installed on the rack fixing block 4, a shovel 7 and an inclined guide column 8 are installed on the bottom surface of the upper mold plate 1, a clamping groove 15 is formed on the lower surface of the shovel 7, and the clamping groove 15 is convenient for connection of a gear transmission structure and a toothed rod structure. Figure 5 6 ​​​​​As shown, a gear transmission structure is mounted on the side of the lower die plate 2, and a cover plate 5 and a lower bottom plate 6 are arranged on the gear transmission structure, and a rack channel is formed between the cover plate 5 and the lower bottom plate 6, and the rack 3 is inserted into the rack channel. A gear accommodating cavity is arranged on one side of the rack channel, and the gear accommodating cavity is opened on the lower bottom plate 6, and a driving gear 17 and a driven gear 18 are mounted in the gear accommodating cavity and are sleeved on the transmission shaft, the driving gear 17 is engaged with the rack 3, and a support bearing 19 is mounted at the end of the transmission shaft. A through hole for accommodating the gear shaft 9 is also opened on the lower bottom plate 6, and the through hole is located on the other side of the gear accommodating cavity. The gear shaft 9 is mounted in the through hole, and a rack end gear 20 is formed at one end of the gear shaft 9, and the rack end gear 20 is engaged with the driven gear 18. A waist-shaped hole is opened at the other end of the gear shaft 9, and one end of a rack 10 is inserted into the waist-shaped hole, and the end of the rack 10 connected with the gear shaft is gap-fitted with the waist-shaped hole. The rack 10 can move axially in the waist-shaped hole of the gear shaft. The other end of the rack 10 passes through the first sliding block 11 and the second sliding block 12 in the lower die plate, and the end of the rack is formed with a screw thread 23. A limiting cylinder 21 is formed on the rack, and a force spring 22 is sleeved on the rack 10.

[0023] A first stepped hole is opened in the first sliding block 11, and a second stepped hole is opened in the second sliding block 12, and the large-diameter sections of the first stepped hole and the second stepped hole are connected to form a limiting hole 13 on the inclined block guide structure, and the limiting cylinder 21 on the rack moves in the limiting hole 13.

[0024] In use, the mold opening state is as follows:

[0025] The injection molding machine drives the upper mold part and the lower mold part to separate and open, the upper die plate drives the rack fixed block to drive the rack synchronously, the rack drives the driving gear in the mold opening process, the driving gear drives the transmission shaft to rotate, the transmission shaft drives the driven gear on it to rotate, the driven gear is engaged with the gear shaft, and the gear shaft is driven to rotate, thereby driving the rack to demold and twist the teeth, at the same time, the first sliding block and the second sliding block are synchronized to demold and reverse buckle, and thus the entire product screw thread and the product reverse buckle are completely separated, and the entire product is completely ejected, and the finished product is taken out.

[0026] The mold closing state is as follows:

[0027] The upper die plate drives the rack fixed block to drive the rack synchronously, and the rack drives the driving gear in the mold closing process, and the driven gear is driven to rotate and reset synchronously under the driving of the driving gear, at the same time, the shovel drives the first sliding block and the second sliding block to slide to the mold closing state, and the upper mold part and the lower mold part are completely closed, and the injection molding is performed, and the production is performed in this cycle.

[0028] The specific embodiments described herein are merely illustrative of the principles of the application. Numerous modifications and adaptations will be apparent to those skilled in the art without departing from the spirit or scope of the application.

Claims

1. A side-mounted toothed demolding structure, comprising an upper template and a lower template, wherein an inclined block guide structure is provided between the upper template and the lower template, characterized in that: A rack fixing plate and a gear transmission structure are fixed on the upper and lower templates respectively. A rack is fixed on the rack fixing plate. The gear transmission structure includes a driving gear and a driven gear arranged coaxially. The driving gear meshes with the rack, and the driven gear meshes with one end of the tooth bar structure. The tooth bar structure passes through the inclined block guide structure, and the other end of the tooth bar structure is formed with threads.

2. The side-mounted hinge tooth demolding structure according to claim 1, characterized in that: The aforementioned toothed rod structure includes a gear shaft and a pressure rod connected to the gear shaft. The gear shaft is located within the gear transmission structure. One end of the gear shaft is formed with a toothed rod end gear, which meshes with the driven gear. The other end of the gear shaft is provided with a special-shaped hole. The end of the toothed rod is inserted into the special-shaped hole of the gear shaft. The cross-section of one end of the toothed rod is the same as the shape of the special-shaped hole, and the toothed rod and the special-shaped hole are clearance-fitted.

3. The side-mounted hinge tooth demolding structure according to claim 2, characterized in that: A limiting cylinder is formed on the toothed rod, and a limiting hole is formed on the inclined block guide structure.

4. The side-mounted hinge tooth demolding structure according to claim 2, characterized in that: The toothed rod is fitted with a power-assist spring.

5. A side-mounted hinge tooth demolding structure according to any one of claims 1 to 4, characterized in that: The gear transmission structure includes an upper cover plate and a lower base plate, with a rack channel formed between the upper cover plate and the lower base plate. A gear receiving cavity is provided on one side of the rack channel and is located on the lower base plate. A driving gear and a driven gear are installed in the gear receiving cavity and are sleeved on the transmission shaft. A through hole for accommodating the gear shaft is also provided on the lower base plate and is located on the other side of the gear receiving cavity.

6. A side-mounted hinge tooth demolding structure according to any one of claims 1 to 4, characterized in that: The inclined block guide structure includes a shovel and an inclined guide post installed on the upper template, and a slider installed on the lower template. The slider has an inclined guide surface formed on it to cooperate with the shovel, and an inclined hole is also provided on it to cooperate with the inclined guide post.

7. The side-mounted hinge tooth demolding structure according to claim 6, characterized in that: The slider includes a first slider and a second slider connected to each other. The first slider has a first stepped hole and the second slider has a second stepped hole. The large-diameter section of the first stepped hole and the large-diameter section of the second stepped hole are connected to form a limiting hole on the inclined block guide structure. The limiting cylinder on the toothed rod moves within the limiting hole.

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