Injection molding machine for zipper production

Abstract

The utility model relates to zip fastener production and processing related technical field, especially a zip fastener production is with injection molding machine, including upper die holder, upper female die, pouring gate, lower die holder, male die, sliding block, tooth slot, limiting groove, guide needle and adjusting assembly, the guide needle is arranged obliquely, a zip fastener production is with injection molding machine, the sliding block is made along the jacking of lower die holder and makes its distance between male die relative adjustment through adjusting assembly, and the sliding block is locked through guide needle, thereby facilitating male die and upper female die die, and it is convenient to process the tooth of zip fastener through the tooth slot of sliding block inner side under the die effect of male die and upper female die, in addition, the detachable connection of sliding block and lower die holder, thereby facilitating the replacement of sliding block according to actual use demand, and then facilitating the production of open zip fastener and the processing of closed zip fastener.

Description

Technical Field

[0001] This utility model relates to the technical field of zipper production and processing, and in particular to an injection molding machine for zipper production. Background Technology

[0002] In the zipper manufacturing process, the injection molding machine is a very important piece of equipment, mainly used to manufacture the teeth or start / end components of the zipper. The injection molding machine injects molten plastic material into a mold, which then cools and solidifies to form the desired zipper component.

[0003] The related technology, disclosed in CN210705712U, describes a zipper injection molding machine for zipper production, belonging to the technical field of zipper production equipment. It includes a base, which comprises a base plate and mounting plates A and B fixedly mounted on top of the base plate. Mounting plate B has an inverted "L"-shaped structure. A lifting motor is fixedly installed at the center of the top of mounting plate B. The telescopic end of the lifting motor passes through mounting plate B and is connected to an upper mold. A lower mold that mates with the upper mold is sleeved on the top of the base. Two positioning plates, also "L"-shaped, are symmetrically slidably inserted into the top of the base. This invention solves the problem of existing zipper injection molding machines wasting considerable production time during the conversion between open and closed zipper production due to difficulties in mold replacement, thus affecting production efficiency. It features high automation and a simple structure, which is beneficial for improving zipper production efficiency.

[0004] When using injection molding machines for zipper production, the upper and lower mold bases often require multiple manual or robotic adjustments and alignments during mold closing operations. This not only increases the complexity of the operation but also extends the processing time. Utility Model Content

[0005] This utility model solves the problems in related technologies and proposes an injection molding machine for zipper production. The upper die and the lower die are closed by the relative movement of the upper die base and the lower die base. During the processing of the zipper teeth, the distance between the slider and the punch is adjusted by the adjustment component, and the slider is locked by the inclined guide to ensure the precise position during the processing. The tooth grooves on the slider can precisely process the zipper teeth under the action of mold closing.

[0006] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution: an injection molding machine for zipper production, comprising an upper mold base, an upper concave mold connected to the upper mold base, a pouring port passing through the upper mold base and communicating with the upper concave mold, a lower mold base disposed relative to the upper mold base, a punch connected to the lower mold base, sliders respectively connected to the lower mold base and disposed on both sides of the punch, a toothed groove disposed on one end of the slider relative to the punch, a limiting groove disposed on the upper concave mold and adapted to the slider, a guide pin fixedly disposed on the upper concave mold, and an adjusting assembly disposed between the guide pin and the slider, wherein the guide pin is inclined.

[0007] By adopting the above technical solution, the relative movement of the upper and lower mold bases achieves the closing of the upper die and the lower die. During zipper tooth machining, the distance between the slider and the lower die is adjusted by an adjusting component, and the slider is locked using an inclined guide, ensuring precise positioning during machining. Furthermore, the tooth grooves on the slider, under the action of mold closing, can precisely machine the zipper teeth. The slider and the lower mold base are detachably connected, facilitating replacement according to actual needs and meeting the production requirements of different types of zippers. Whether it's an open or closed zipper, the cooperation between the slider and the upper die enables an efficient and precise production process.

[0008] As a preferred embodiment, a fixing screw is provided between the upper die and the upper die base, and the fixing screw passes through the upper die base and connects to the upper die.

[0009] By adopting the above technical solution, the upper die is connected to the upper die base by fixing screws, and the fixing screws pass through the two parts. This structure allows the upper die to be firmly fixed during mold operation, and it is also easy to disassemble and assemble quickly when maintenance or replacement is required, thereby improving maintenance efficiency and mold usage flexibility.

[0010] As a preferred embodiment, the adjustment assembly includes a guide hole on the slider that matches the guide pin, a limiting groove on the lower mold base that matches the guide pin, a mounting plate connected to the lower mold base, a connecting screw between the mounting plate and the lower mold base, a sliding rod passing through the mounting plate and connecting it to the slider, and a return spring between the mounting plate and the sliding rod. The mounting plate has a sliding hole that matches the sliding rod, and the connecting screw passes through the mounting plate and connects it to the lower mold base.

[0011] By adopting the above technical solution, it is easy to assemble and disassemble the mounting plate and the lower mold base, thereby facilitating the replacement of the slider.

[0012] When the lower mold base moves relative to the upper mold base due to the lifting mechanism, the slider gradually contacts the limiting groove of the upper die. The slider is subjected to the force of the limiting groove and the punch, and gradually moves relative to the die. During this process, the guide slide hole and guide pin set on the slider cooperate, and the limiting slide groove set on the lower mold base and guide pin are matched to ensure that the slider moves accurately within a specific path.

[0013] As a preferred embodiment, one end of the reset spring is fixedly connected to the end of the sliding rod away from the mounting plate, and the other end of the reset spring is fixedly connected to the mounting plate.

[0014] By adopting the above technical solution, when the slider is subjected to the force of the limiting groove, it moves the slider in the direction relative to the punch, thereby stretching the return spring. When the slider leaves the force of the limiting groove, the return spring rebounds, causing the sliding rod to pull the slider away from the punch.

[0015] As a preferred embodiment, a buffer pad is also provided on the side of the slider corresponding to the limiting groove.

[0016] By adopting the above technical solution, a buffer pad is set on the side of the slider close to the limiting groove, and a polymer adhesive is used to firmly connect the buffer pad to the slider. In this way, when the slider contacts the limiting groove, the buffer pad can effectively absorb and disperse the impact force, reduce the direct friction between the slider and the limiting groove, thereby avoiding wear caused by friction and greatly extending the service life of the slider.

[0017] As a preferred embodiment, the end of the guide pin that is connected to the upper concave mold is spherical.

[0018] By adopting the above technical solution, this design makes it easier to insert the guide pin into the guide hole of the slider by setting the end of the guide pin away from the upper die to be spherical.

[0019] As a preferred embodiment, the guide hole is configured to be through-hole, and the inner wall of the guide hole is configured to be a smooth arc surface.

[0020] By adopting the above technical solution, not only can the falling direction of the guide pin be guided more smoothly, but the smooth arc surface can also further limit the slider to be precisely positioned relative to the movement direction of the punch.

[0021] As a preferred embodiment, the limiting slide is configured as semi-through, and the inner wall of the limiting slide is configured as a smooth arc surface. The limiting slide adopts a semi-through design and maintains a smooth inner wall with an arc surface.

[0022] By adopting the above technical solution, this design not only effectively prevents the guide pin from coming out of the limiting groove, but also ensures that the guide pin can quickly reset when the lower mold base retracts through the lifting mechanism, thus ensuring the stability and reliability of the mold during operation.

[0023] Compared with the prior art, the beneficial effects of this utility model are: This utility model; The upper die and the lower die are closed by the relative movement of the upper die base and the lower die base. During the machining of the zipper teeth, the distance between the slider and the punch is adjusted by the adjustment component. The slider is locked by the inclined guide to ensure the precise position during the machining process. The tooth grooves on the slider can precisely machine the zipper teeth under the action of mold closing. The slider and the lower die base are detachably connected, which is convenient to replace according to actual needs and meets the production requirements of different types of zippers. Whether it is an open zipper or a closed zipper, the slider and the upper die can cooperate to achieve an efficient and precise production process during processing. Attached Figure Description

[0024] Figure 1 This is a partial sectional view of the overall structure of the injection molding machine for zipper production according to this utility model; Figure 2 This utility model relates to an injection molding machine for zipper production. Figure 1 A schematic diagram of the structure in a partial half-section view; Figure 3 This utility model relates to an injection molding machine for zipper production. Figure 2 A structural schematic diagram of the front view; Figure 4 This is a schematic diagram of the upper and lower mold bases in the injection molding machine for zipper production of this utility model when separated.

[0025] In the picture: 1. Upper mold base; 11. Upper die cavity; 111. Fixing screw; 2. Lower mold base; 20. Limiting groove; 21. Punch; 3. Slider; 30. Tooth; 31. Guide slide hole; 32. Buffer pad; 41. Mounting plate; 411. Connecting screw; 42. Sliding rod; 421. Return spring; 5. Guide pin. Detailed Implementation

[0026] 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. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the present utility model or its application or use. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0027] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0028] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps described in these embodiments do not limit the scope of this invention. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following drawings denote similar items; therefore, once an item is defined in one drawing, it need not be further discussed in subsequent drawings.

[0029] In the description of this utility model, it should be understood that the directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description. Unless otherwise stated, these directional terms do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the scope of protection of this utility model. The directional terms "inner" and "outer" refer to the inner and outer contours of each component itself.

[0030] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0031] Furthermore, it should be noted that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be construed as limiting the scope of protection of this utility model.

[0032] like Figures 1 to 4 As shown, an injection molding machine for zipper production includes an upper mold base 1, an upper cavity mold 11 connected to the upper mold base 1, and a sprue penetrating the upper mold base 1 and communicating with the upper cavity mold 11. A fixing screw 111 is provided between the upper cavity mold 11 and the upper mold base 1, and the fixing screw 111 penetrates the upper mold base 1 and connects the upper cavity mold 11. The upper cavity mold 11 is connected to the upper mold base 1 by the fixing screw 111, which penetrates and connects the two parts. This structure allows the upper cavity mold 11 to be firmly fixed during mold operation and is easy to disassemble and assemble quickly when maintenance or replacement is required, thereby improving maintenance efficiency and mold usage flexibility.

[0033] Please refer to the details. Figure 1 , Figure 2 , Figure 3 and Figure 4The upper die 11 includes a lower die 2 relative to the upper die 1, a punch 21 connected to the lower die 2, sliders 3 connected to the lower die 2 and disposed on both sides of the punch 21, a toothed groove 30 disposed on one end of the slider 3 relative to the punch 21, a limiting groove on the upper die 11 adapted to the slider 3, a guide pin 5 fixedly disposed on the upper die 11, and an adjustment assembly disposed between the guide pin 5 and the slider 3. The guide pin 5 is inclined, and the adjustment assembly includes a guide sliding hole 31 disposed on the slider 3 adapted to the guide pin 5, and a limiting groove disposed on the lower die 11. The mold base 2 includes a limiting groove 20 adapted to the guide pin 5, a mounting plate 41 connected to the lower mold base 2, a connecting screw 411 disposed between the mounting plate 41 and the lower mold base 2, a sliding rod 42 passing through the mounting plate 41 and connecting to the slider 3, and a return spring 421 disposed on the outside of the mounting plate 41 and between the sliding rod 42. The mounting plate 41 is provided with a sliding hole adapted to the sliding rod 42, and the connecting screw 411 passes through the mounting plate 41 and connects to the lower mold base 2, which facilitates the disassembly and assembly of the mounting plate 41 and the lower mold base 2, thereby facilitating the replacement of the slider 3.

[0034] Please refer to the details. Figure 2 , Figure 3 and Figure 4 When the lower mold base 2 moves relative to the upper mold base 1 due to the lifting mechanism, the slider 3 gradually comes into contact with the limiting groove of the upper die 11. The slider 3 is subjected to the force of the limiting groove and the punch 21, and gradually moves relative to the die. During this process, the guide hole 31 on the slider 3 cooperates with the guide pin 5, and the limiting groove 20 on the lower mold base 2 is matched with the guide pin 5, ensuring that the slider 3 moves accurately within a specific path. When the lifting mechanism moves the lower mold base 2 away from the upper mold base 1, the slider 3 gradually comes into contact with the limiting groove of the upper die 11 and is subjected to the force of the limiting groove and the punch 21, beginning to move away from the die. During this process, the guide hole 31 on the slider 3 cooperates with the guide pin 5, and the sliding hole on the mounting plate 41 cooperates with the sliding rod 42, ensuring that the slider 3 moves along a predetermined track. Mounting plate 41 is fixed to lower mold base 2 by connecting screws 411. Sliding rod 42 passes through sliding hole on mounting plate 41 and is connected to slider 3. It is also connected to sliding rod 42 on the outside of mounting plate 41 by return spring 421 to provide restoring force. Return spring 421 can also push slider 3 back to its initial position, ensuring the stability of the equipment and the convenience of operation, and realizing efficient and precise adjustment function. In this way, the tooth 30 groove on the inner side of slider 3 is used to process the tooth 30 of the workpiece when the upper die 11 and the punch 21 are closed.

[0035] Please refer to the details. Figure 3 and Figure 4One end of the return spring 421 is fixedly connected to the end of the sliding rod 42 away from the mounting plate 41, and the other end of the return spring 421 is fixedly connected to the mounting plate 41. When the slider 3 is subjected to the force of the limiting groove, it drives the slider 3 to move in the direction relative to the punch 21, thereby stretching the return spring 421. When the slider 3 leaves the force of the limiting groove, the return spring 421 rebounds, driving the sliding rod 42 to pull the slider 3 away from the punch 21.

[0036] Please refer to the details. Figure 3 To avoid friction when the slider 3 comes into contact with the limiting groove, a buffer pad 32 is also provided on the side of the slider 3 corresponding to the limiting groove. By providing the buffer pad 32 on the side of the slider 3 close to the limiting groove and using a polymer adhesive to firmly connect the buffer pad 32 to the slider 3, the buffer pad 32 can effectively absorb and disperse the impact force when the slider 3 contacts the limiting groove, reducing the direct friction between the slider 3 and the limiting groove, thereby avoiding wear caused by friction and greatly extending the service life of the slider 3.

[0037] Please refer to the details. Figure 2 , Figure 3 and Figure 4 The end of the guide pin 5 that is connected to the upper concave mold 11 is set to be spherical. This design makes it easier for the guide pin 5 to be inserted into the guide hole 31 of the slider 3 by setting the end of the guide pin 5 that is away from the upper concave mold 11 to be spherical.

[0038] Please refer to the details. Figure 2 , Figure 3 and Figure 4 The guide slide hole 31 is configured to be through, and the inner wall of the guide slide hole 31 is configured to be a smooth arc surface. The guide slide hole 31 is configured to be through and the inner wall is designed to be a smooth arc surface. This not only guides the falling direction of the guide pin 5 more smoothly, but also limits the movement of the slider 3 relative to the punch 21 more precisely through the smooth arc surface.

[0039] Please refer to the details. Figure 2 , Figure 3 and Figure 4 The limiting slide 20 is designed to be semi-through, and the inner wall of the limiting slide 20 is designed to be a smooth arc surface. The limiting slide 20 adopts a semi-through design and maintains a smooth inner wall of the arc surface. This design not only effectively prevents the guide pin 5 from coming out of the limiting slide 20, but also allows the guide pin 5 to quickly reset when the lower mold base 2 retracts through the lifting mechanism, ensuring the stability and reliability of the mold during operation.

[0040] In this embodiment, during use, when the lower mold base 2 moves relative to the upper mold base 1 due to the lifting mechanism, the slider 3 gradually contacts the limiting groove of the upper die 11. The slider 3 is subjected to the force of the limiting groove and the punch 21, gradually moving relative to the die. During this process, the guide hole 31 on the slider 3 cooperates with the guide pin 5, and the limiting groove 20 on the lower mold base 2 is adapted to the guide pin 5, ensuring that the slider 3 moves accurately within a specific path. When the lifting mechanism moves the lower mold base 2 away from the upper mold base 1, the slider 3 gradually contacts the limiting groove of the upper die 11 and is subjected to the force of the limiting groove and the punch 21, beginning to move away from the die. During this process, the guide hole 31 on the slider 3 cooperates with the guide pin 5, and the sliding hole on the mounting plate 41 cooperates with the sliding rod 42, ensuring that the slider 3 moves along a predetermined track. Mounting plate 41 is fixed to lower mold base 2 by connecting screws 411. Sliding rod 42 passes through sliding hole on mounting plate 41 and is connected to slider 3. It is also connected to sliding rod 42 on the outside of mounting plate 41 by return spring 421 to provide restoring force. Return spring 421 can also push slider 3 back to its initial position, ensuring the stability of the equipment and the convenience of operation, and realizing efficient and precise adjustment function. In this way, the tooth 30 groove on the inner side of slider 3 is used to process the tooth 30 of the workpiece when the upper die 11 and the punch 21 are closed.

[0041] The above are preferred embodiments of this utility model. Those skilled in the art can make changes and modifications to the above embodiments. Therefore, this utility model is not limited to the specific embodiments described above. Any obvious improvements, substitutions or modifications made by those skilled in the art based on this utility model shall fall within the protection scope of this utility model.

Claims

1. An injection molding machine for zipper production, characterized in that: The assembly includes an upper mold base (1), an upper die cavity (11) connected to the upper mold base (1), a sprue that passes through the upper mold base (1) and communicates with the upper die cavity (11), a lower mold base (2) disposed relative to the upper mold base (1), a punch (21) connected to the lower mold base (2), sliders (3) respectively connected to the lower mold base (2) and disposed on both sides of the punch (21), a tooth (30) groove disposed on one end of the slider (3) relative to the punch (21), a limiting groove disposed on the upper die cavity (11) and adapted to the slider (3), a guide pin (5) fixedly disposed on the upper die cavity (11), and an adjustment assembly disposed between the guide pin (5) and the slider (3), wherein the guide pin (5) is inclined.

2. The injection molding machine for zipper production according to claim 1, characterized in that: A fixing screw (111) is provided between the upper die (11) and the upper die base (1), and the fixing screw (111) passes through the upper die base (1) and is connected to the upper die (11).

3. The injection molding machine for zipper production according to claim 2, characterized in that: The adjustment assembly includes a guide slide hole (31) on the slider (3) that is adapted to the guide pin (5), a limiting slide groove (20) on the lower mold base (2) that is adapted to the guide pin (5), a mounting plate (41) connected to the lower mold base (2), a connecting screw (411) between the mounting plate (41) and the lower mold base (2), a sliding rod (42) that passes through the mounting plate (41) and connects to the slider (3), and a return spring (421) that is located on the outside of the mounting plate (41) and between the sliding rod (42). The mounting plate (41) has a slide hole that is adapted to the sliding rod (42), and the connecting screw (411) passes through the mounting plate (41) and connects to the lower mold base (2).

4. The injection molding machine for zipper production according to claim 3, characterized in that: One end of the reset spring (421) is fixedly connected to the end of the sliding rod (42) away from the mounting plate (41), and the other end of the reset spring (421) is fixedly connected to the mounting plate (41).

5. The injection molding machine for zipper production according to claim 4, characterized in that: The end of the guide pin (5) that is connected away from the upper die (11) is spherical.

6. The injection molding machine for zipper production according to claim 5, characterized in that: The guide hole (31) is configured to be through, and the inner wall of the guide hole (31) is configured to be a smooth arc surface.

7. The injection molding machine for zipper production according to claim 6, characterized in that: The limiting groove is designed to be semi-through, and the inner wall of the limiting groove is designed to be a smooth arc surface.

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