Mould structure for ejecting synchronous twisted teeth

Abstract

The utility model relates to the field of molds, and discloses a mold structure for ejecting synchronous twisted teeth, which comprises a first mold plate and a second mold plate, an upper cavity and a lower cavity are respectively arranged in the first mold plate and the second mold plate; a driving wheel and a threaded core meshed with the driving wheel are arranged in the upper cavity, a rotatable guide sleeve is clamped in the driving wheel, and a connecting seat connected with the driving wheel and used for supporting the guide sleeve is arranged in the lower cavity; a lead screw is in threaded fit in the guide sleeve, one end of the lead screw is connected with an ejector plate, and when the ejector plate is pushed to enable the lead screw to linearly move, the guide sleeve drives the driving wheel to rotate and the threaded core to synchronously rotate, so that demolding of an injection product is realized. Demolding of the threaded core is achieved through the lead screw mechanism, complex parts such as a wedge, an oil cylinder and a motor are avoided, the overall cost is lower, due to the fact that the number of the parts is small, the size and weight of the mold are reduced, especially the size change of the mold is controlled within the normal mold range, assembly, disassembly and transportation of workers are facilitated, and the reliability of the mold is improved; and the fault rate and the maintenance cost are reduced.

Description

Technical Field

[0001] This utility model relates to the field of molds, specifically to a mold structure for ejecting synchronous teeth. Background Technology

[0002] Currently, widely used mold release equipment typically employs wedges, hydraulic cylinders, or motors to drive racks and pinions, thus achieving raking. While this method achieves the desired release effect, its complex structure involves numerous parts, often dozens more than usual. This not only increases manufacturing and maintenance costs but also leads to a larger mold size, particularly in height, which often exceeds that of a normal mold by one to two times. This causes significant inconvenience for workers during assembly and transportation, and increases the difficulty of disassembly and maintenance. Therefore, there is an urgent need for a mold release structure that is simple in structure, low in cost, and easy to assemble, disassemble, and maintain. Utility Model Content

[0003] The purpose of this invention is to provide a mold structure for ejecting synchronous teeth, so as to solve the above-mentioned shortcomings in the prior art.

[0004] To achieve the above objectives, this utility model provides the following technical solution:

[0005] A mold structure for ejecting synchronous coiled teeth includes: a first template and a second template, each having an upper cavity and a lower cavity respectively;

[0006] The upper cavity is provided with a drive wheel and a threaded core that meshes with it. A rotatable guide sleeve is engaged in the drive wheel. The lower cavity is provided with a connecting seat that is connected to the drive wheel and is used to support the guide sleeve.

[0007] The guide sleeve is threaded with a lead screw, and the first template and the second template extend from the two ends of the lead screw respectively. One end of the lead screw is connected to an ejector plate. When the ejector plate is pushed, the lead screw moves linearly, and the guide sleeve drives the drive wheel to rotate. The threaded core rotates synchronously, realizing the demolding of the injection molded product.

[0008] As a preferred embodiment of this utility model, the drive wheel has a first through hole extending in the longitudinal direction and a mounting groove communicating with the first through hole.

[0009] As a preferred embodiment of this utility model, the mounting groove is further provided with an inner spline groove, and the guide sleeve is provided with external splines that cooperate with the inner spline groove in an annular interval.

[0010] In a preferred embodiment of this utility model, the top surface of the connecting seat is in close contact with the bottom of the drive wheel, and also serves to support the external spline.

[0011] As a preferred embodiment of this utility model, the connecting seat is provided with a stepped groove and a second through hole, the stepped groove being used to support the bottom of the guide sleeve.

[0012] In a preferred embodiment of this utility model, the connecting seat and the drive wheel are fastened together by bolts.

[0013] As a preferred embodiment of this utility model, the drive wheel and the connecting seat are respectively fitted with a first bearing and a second bearing located in the upper cavity and the lower cavity.

[0014] As a preferred embodiment of this utility model, the threaded core is provided with a driven wheel that meshes with the driving wheel.

[0015] As a preferred embodiment of this utility model, the upper and lower ends of the threaded core are respectively fitted with a third bearing and a fourth bearing.

[0016] In a preferred embodiment of this utility model, the two ends of the lead screw pass through the drive wheel and the connecting seat, respectively.

[0017] This invention has the following advantages: the screw mechanism enables the demolding of the threaded core, avoiding the use of complex parts such as wedges, cylinders and motors, resulting in lower overall cost. Due to the reduced number of parts, the size and weight of the mold are reduced, and the size variation of the mold is controlled within the normal mold range, reducing the space occupied and facilitating assembly, disassembly and transportation for workers. At the same time, the mold structure is simplified, the reliability of the mold is improved, and the failure rate and maintenance costs are reduced. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings.

[0019] Figure 1 This is a cross-sectional schematic diagram of the overall structure of this utility model.

[0020] Explanation of reference numerals in the attached figures:

[0021] 1. First template; 11. Upper cavity; 12. First bearing; 13. Third bearing; 2. Second template; 21. Lower cavity; 22. Second bearing; 23. Fourth bearing; 3. Drive wheel; 31. First through hole; 32. Mounting groove; 33. Internal spline groove; 4. Threaded core; 41. Driven wheel; 5. Guide sleeve; 51. External spline; 6. Connecting seat; 61. Step groove; 62. Second through hole; 63. Bolt; 7. Lead screw; 8. Ejector plate; 9. Injection molded product. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] See Figure 1 As shown, this utility model provides a mold structure for ejecting synchronous coiled teeth, including: a first template 1 and a second template 2, both of which are respectively provided with an upper cavity 11 and a lower cavity 21, and the upper cavity 11 and the lower cavity 21 are combined to form a limited space.

[0024] A drive wheel 3 is provided in the upper cavity 11. A threaded core 4 is provided on one side of the drive wheel 3 and in the upper cavity 11. The drive wheel 3 meshes with the threaded core 4. That is, a driven wheel 41 is provided on the threaded core 4. The driven wheel 41 meshes with the drive wheel 3 to ensure the overall coordination of each component during the threading process.

[0025] In addition, a rotatable guide sleeve 5 is engaged inside the drive wheel 3. The drive wheel 3 has a first through hole 31 extending in the longitudinal direction and a mounting groove 32 communicating with the first through hole 31. An inner spline groove 33 is also provided in the mounting groove 32. The guide sleeve 5 has outer splines 51 that cooperate with the inner spline groove 33 in an annular interval.

[0026] The rotatable design of the guide sleeve 5 ensures good guidance for the drive wheel 3 during operation, guaranteeing accurate movement during thread forming and reducing the risk of positional deviation. Furthermore, the fit between the inner spline groove 33 and the outer spline 51 increases transmission stability, ensuring that transmission efficiency does not decrease under high pressure or high load conditions, while also preventing slippage or slippage. The design of the first through hole 31 and the mounting groove 32 makes the installation and replacement of the guide sleeve 5 more convenient, reducing downtime and improving production efficiency.

[0027] A connecting seat 6 is provided in the lower cavity 21, which is connected to the driving wheel 3 and is used to support the guide sleeve 5. The top surface of the connecting seat 6 is in close contact with the bottom of the driving wheel 3 and is also used to support the external spline 51. A stepped groove 61 and a second through hole 62 are provided in the connecting seat 6. The stepped groove 61 is used to support the bottom of the guide sleeve 5. The connecting seat 6 and the driving wheel 3 are fastened together by bolts 63.

[0028] The connecting seat 6 is in close contact with the bottom of the drive wheel 3, forming a stable support structure, which improves the overall rigidity and stability and reduces vibration and deformation under high load or high speed conditions. The connecting seat 6 is used to support the external spline 51, so that the force transmitted from the guide sleeve 5 to the drive wheel 3 is more even, which helps to enhance transmission efficiency and reliability and ensure effective power transmission.

[0029] In addition, the guide sleeve 5 is threaded with a lead screw 7. The two ends of the lead screw 7 extend into the first template 1 and the second template 2 respectively, and one end of the lead screw 7 is connected to the ejector plate 8. That is, the two ends of the lead screw 7 pass through the drive wheel 3 and the connecting seat 6 respectively. By pushing the ejector plate 8, the lead screw 7 moves linearly back and forth, which drives the guide sleeve 5 to rotate. The guide sleeve 5 drives the drive wheel 3 to rotate, and the threaded core 4 rotates synchronously, so as to realize the demolding of the injection molded product 9.

[0030] The connection between the guide sleeve 5 and the lead screw 7 is existing technology, and its principle will not be elaborated here. The drive source for the ejector plate 8 can be a cylinder, hydraulic cylinder, etc.

[0031] In this embodiment, when the threaded core 4 rotates, a pushing mechanism can be provided on the ejector plate 8. This pushing mechanism can extend into the threaded core 4. As the threaded core 4 rotates, it pushes the ejector plate 8, causing the pushing mechanism to eject the injection molded product 9, thereby achieving synchronous threaded ejection of the injection molded product 9. The pushing mechanism is designed according to actual needs, as long as it can stably eject the injection molded product 9; no structural restrictions are imposed here.

[0032] The drive wheel 3 and the connecting seat 6 are respectively fitted with a first bearing 12 and a second bearing 22 located in the upper cavity 11 and the lower cavity 21. The upper end and the lower end of the threaded core 4 are respectively fitted with a third bearing 13 and a fourth bearing 23.

[0033] The aforementioned multi-bearing configuration provides more even support for the threaded core 4, connecting seat 6, and drive wheel 3, effectively distributing the load, reducing local wear, improving the stability of the overall structure, and also enhancing the overall structural rigidity, production efficiency, and extending the service life of the mold.

[0034] This embodiment achieves demolding of the threaded core 4 through a lead screw mechanism, avoiding the use of complex parts such as wedges, hydraulic cylinders, and motors, resulting in lower overall costs. Due to the reduced number of parts, the size and weight of the mold are reduced, and in particular, the size variation of the mold is controlled within the normal mold range, reducing the space occupied and facilitating assembly, disassembly, and transportation for workers. At the same time, the mold structure is simplified, the reliability of the mold is improved, and the failure rate and maintenance costs are reduced.

[0035] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A mold structure for ejecting synchronous coiled teeth, characterized in that, include: The first template and the second template each have an upper cavity and a lower cavity inside, respectively; The upper cavity is provided with a drive wheel and a threaded core that meshes with it. A rotatable guide sleeve is engaged in the drive wheel. The lower cavity is provided with a connecting seat that is connected to the drive wheel and is used to support the guide sleeve. The guide sleeve is threaded with a lead screw, and the first template and the second template extend from the two ends of the lead screw respectively. One end of the lead screw is connected to an ejector plate. When the ejector plate is pushed, the lead screw moves linearly, and the guide sleeve drives the drive wheel to rotate. The threaded core rotates synchronously, realizing the demolding of the injection molded product.

2. The mold structure for ejecting synchronous teeth according to claim 1, characterized in that: The drive wheel has a first through hole extending longitudinally and a mounting groove communicating with the first through hole.

3. The mold structure for ejecting synchronous teeth according to claim 2, characterized in that: The mounting groove is also provided with an inner spline groove, and the guide sleeve is provided with external splines that mate with the inner spline groove in an annular interval.

4. The mold structure for ejecting synchronous teeth according to claim 3, characterized in that: The top surface of the connecting seat is in close contact with the bottom of the drive wheel and also serves to support the external spline.

5. The mold structure for ejecting synchronous teeth according to claim 1, characterized in that: The connecting seat has a stepped groove and a second through hole, and the stepped groove is used to support the bottom of the guide sleeve.

6. The mold structure for ejecting synchronous teeth according to claim 1, characterized in that: The connecting seat and the drive wheel are fastened together by bolts.

7. The mold structure for ejecting synchronous teeth according to claim 1, characterized in that: The drive wheel and the connecting seat are respectively fitted with a first bearing and a second bearing located in the upper cavity and the lower cavity.

8. The mold structure for ejecting synchronous teeth according to claim 1, characterized in that: The threaded core is provided with a driven wheel that meshes with the driving wheel.

9. The mold structure for ejecting synchronous teeth according to claim 1, characterized in that: The upper and lower ends of the threaded core are respectively fitted with a third bearing and a fourth bearing.

10. The mold structure for ejecting synchronous teeth according to claim 1, characterized in that: The two ends of the lead screw pass through the drive wheel and the connecting seat, respectively.

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