A mold structure for cylinder de-product thread

Abstract

The utility model belongs to mould technical field discloses a mould structure of cylinder product thread demoulding, including lower mould plate, be equipped with cylinder drive part and thread demoulding part on the lower mould plate, the thread demoulding part includes rack assembly and gear assembly, the rack assembly includes rack, the gear assembly includes thread insert, thread screw rod and gear, gear is fixed on thread screw rod and is engaged with rack, thread insert is fixed in one end of thread screw rod, corresponds the thread position of plastic product, cylinder drive part drives rack to move on the lower mould plate, rack drive gear drives thread screw rod synchronous rotation, thread screw rod drives thread insert rotation completes thread demoulding. The simple structure of this mould structure, design and production are easy, simple installation, cost saving, can effectively guarantee product structure smooth demoulding, can efficiently improve production efficiency, guarantee the quality of product, can save artificial cost and the cost of repairing mould.

Description

Technical Field

[0001] This utility model belongs to the field of mold technology, specifically relating to a mold structure for descrewing products using a cylinder. Background Technology

[0002] Threaded products have a wide range of applications. Traditionally, they are made of metal. While metal products offer sufficient strength to meet performance requirements, they also have long lead times and complex manufacturing processes. With advancements in materials technology and manufacturing processes, plastics can now replace metal, achieving the same performance requirements while significantly reducing raw material costs.

[0003] However, for threaded plastic products, the mold structure requires a solution to the problem of demolding after injection molding. There are usually two types of demolding methods: one is forced demolding, which is only suitable for plastic products with very shallow threads; the other is manual demolding by rotating the threads after the mold is opened. Regardless of which method is used, the defect rate of the product will increase significantly, and the efficiency is low with huge labor costs.

[0004] Therefore, there is an urgent need to design a mold structure for cylinder unscrewing of products, which can effectively ensure product quality, save labor costs, and shorten the product production cycle. Utility Model Content

[0005] To address the problems existing in the prior art, this utility model provides a mold structure for unscrewing products using a cylinder. This mold structure is simple in structure, easy to design and manufacture, easy to install, and cost-effective. It can effectively ensure smooth demolding of the product structure, which can not only improve production efficiency and ensure product quality, but also save labor costs and mold repair costs, and shorten the product production cycle.

[0006] To achieve the above objectives, this utility model is implemented through the following technical solution:

[0007] A mold structure for removing product threads using a cylinder includes a lower template. The lower template is provided with a cylinder drive unit and a thread removal unit. The thread removal unit includes a rack assembly and a gear assembly. The rack assembly includes a rack, and the gear assembly includes a threaded insert, a threaded screw, and a gear. The gear is fixed on the threaded screw and meshes with the rack. The threaded insert is fixed to one end of the threaded screw, corresponding to the thread position of the plastic product. The cylinder drive unit drives the rack to move on the lower template, and the rack drives the gear to rotate the threaded screw synchronously. The threaded screw drives the threaded insert to rotate, completing the thread removal process.

[0008] Furthermore, the threaded demolding part also includes a gearbox and a synchronizing nut. The threaded screw is horizontally mounted on the gearbox, and the synchronizing nut is threadedly connected to the other end of the threaded screw and fixed to the gearbox housing. The synchronizing nut is provided with a synchronizing nut adjusting block for adjusting the thread engagement of the threaded screw and the synchronizing nut.

[0009] Furthermore, the gearbox is a split type.

[0010] Furthermore, the threaded demolding part also includes a guide sleeve, which is sleeved on the threaded screw and located on both sides of the gear.

[0011] Furthermore, the cylinder drive unit includes a cylinder, a cylinder mounting base, a rack mounting base, a connector, a guide post, and a guide post mounting base; the cylinder is mounted on the cylinder mounting base, the guide post mounting base is fixed to the side of the lower template, the rack passes through the guide post mounting base and is connected to the rack mounting base, the end of the rack is connected to the piston rod of the cylinder through the connector, the guide posts are symmetrically arranged on both sides of the rack, one end of which is fixedly connected to the guide post mounting base, and the other end passes through the rack mounting base and is connected to the cylinder mounting base.

[0012] Furthermore, the rack mounting base is provided with a small T-shaped groove, which connects to the T-shaped end of the rack.

[0013] Furthermore, a fixing block is provided between the cylinder mounting seat and the rack mounting seat, and a large T-shaped groove for accommodating the connecting piece is formed between the cylinder mounting seat, the fixing block, and the rack mounting seat.

[0014] Furthermore, the bottom of the large T-shaped groove is in a through-hole state with the cylinder mounting seat and the rack mounting seat, which is used for the connecting piece to connect the piston rod of the cylinder and the T-shaped end of the rack respectively.

[0015] Furthermore, the fixing block and the rack mounting base are fixedly connected, and both sides of the fixing block and the rack mounting base are provided with guide post sliding shafts, with the guide posts set inside the guide post sliding shafts.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] This utility model discloses a mold structure for descrewing products using a cylinder. The mold structure adopts cylinder descrewing, which is simple in structure, can ensure the product qualification rate, effectively reduce labor costs, and can effectively and stably guarantee the subsequent product production process of the mold. Attached Figure Description

[0018] Figure 1 This is an overall sectional view of a mold structure for unscrewing products using a cylinder, according to this utility model.

[0019] Figure 2This is a schematic diagram of the installation structure of the cylinder drive part and the threaded demolding part of this utility model on the lower template.

[0020] Figure 3 This is a schematic diagram of the specific structure of the threaded demolding part of this utility model (gearbox omitted).

[0021] Figure 4 This is a schematic diagram showing the installation positions of the threaded screw, synchronizing nut, threaded insert, gearbox, and rack guide block of this utility model.

[0022] Figure 5 This is a sectional view of the cylinder mounting base, fixing block, and rack mounting base of this utility model.

[0023] The components are: 1. Upper fixed plate; 2. Hot runner plate; 3. Upper template; 4. Upper mold core; 5. Lower template; 6. Lower mold core; 7. Square iron; 8. Lower fixed plate;

[0024] 9. Threaded insert; 10. Threaded screw; 11. Guide sleeve; 12. Gear; 13. Synchronizing nut; 14. Rack; 15. Rack guide block; 16. Gearbox; 17. Synchronizing nut adjusting block;

[0025] 18. Cylinder; 19. Cylinder mounting seat; 20. Guide post; 21. Guide post mounting seat; 22. Connector; 23. Rack mounting seat; 23-1. Small T-shaped groove; 24. Fixing block; 25. Large T-shaped groove; 26. Guide post sliding shaft. Detailed Implementation

[0026] The specific embodiments of this utility model will be further explained below with reference to the accompanying drawings.

[0027] like Figures 1-5 As shown, a mold structure for removing product threads using a cylinder is provided, including an upper mold and a lower mold. The upper mold includes an upper fixed plate 1, a hot runner plate 2, an upper template 3, and an upper mold core 4 arranged from top to bottom. The lower mold includes a lower mold core 6, a lower template 5, a square iron 7, and a lower fixed plate 8 arranged from top to bottom. The lower template 5 is provided with a cylinder driving part and a thread demolding part. The cylinder driving part drives the thread demolding part to complete the demolding of the plastic product threads.

[0028] The threaded demolding part includes a gearbox 16, a rack assembly, and a gear assembly. The rack assembly includes a rack 14 and a rack guide block 15. Multiple gear assemblies can be provided, each with the same structure, including a threaded insert 9, a threaded screw 10, a guide sleeve 11, a gear 12, and a synchronizing nut 13. The threaded insert 9 corresponds to the threaded position of the plastic product and together with the upper mold core 4 and the lower mold core 6, forms the injection cavity.

[0029] Specifically, the gearbox 16 is mounted on the lower template 5 and located outside the lower mold core 6. One end of the rack 14 extends to the outside of the lower template 5 and connects to the cylinder drive unit, while the other end passes through the gearbox 16 and is slidably mounted on the lower template 5 via rack guide blocks 15 mounted on both sides of the lower template 5. The rack guide blocks 15 are located on the outside of the gearbox 16 corresponding to the outlet of the rack 14, providing a support track and guidance for the movement of the rack 14.

[0030] The threaded screw 10 is horizontally mounted on the gearbox 16 and perpendicularly intersects the rack 14. The gear 12 is sleeved on the threaded screw 10 and meshes with the rack 14. It is fixed to the threaded screw 10 by a locating pin and a snap ring. The rack 14 drives the gear 12 to rotate, and the gear 12 drives the threaded screw 10 to rotate synchronously. The guide sleeve 11 is sleeved on the threaded screw 10 and located on both sides of the gear 12. The guide sleeve 11 provides support and guidance for the threaded screw 10. Brass guide sleeves are preferred. The threaded insert 9 is fixed by a locating pin. One end of the threaded screw 10 is fixed, corresponding to the thread position of the plastic product. The synchronizing nut 13 is threaded to the other end of the threaded screw 10 and fixed to the gearbox 16 housing by screws. The synchronizing nut 13 is provided with a synchronizing nut adjusting block 17. During initial installation, the direction of the starting teeth of each set of threaded screws 10 needs to be adjusted to a suitable position, and then the gear synchronizing nut 13 is fixed to the gearbox 16. The synchronizing nut adjusting block 17 is used to adjust the meshing position of the external teeth of the threaded screw 10 and the internal teeth of the synchronizing nut.

[0031] The gearbox 16 here can be configured as a split type, which makes it easy to install components such as rack 14, threaded screw 10, guide sleeve 11, gear 12, and synchronizing nut 13 inside the gearbox 16.

[0032] The cylinder drive unit is horizontally arranged on the side of the lower template 5, and includes a cylinder 18, a cylinder mounting seat 19, a fixing block 24, a rack mounting seat 23, a connector 22, a guide post 20, and a guide post mounting seat 21.

[0033] Specifically, the cylinder 18 is mounted on the cylinder mounting seat 19, the guide post mounting seat 21 is fixed to the side of the lower template 5, the rack 14 passes through the guide post mounting seat 21 and is connected to the rack mounting seat 23, the rack mounting seat 23 is provided with a small T-shaped groove 23-1 to limit the T-shaped end of the rack 14, the fixing block 24 is set between the cylinder mounting seat 19 and the rack mounting seat 23 and is fixedly connected to the rack mounting seat 23, the three form a large T-shaped groove 25 as a space to accommodate the connector 22, the T-shaped end of the rack 14 is connected to the piston rod of the cylinder 18 through the connector 22, the bottom of the large T-shaped groove 25 is in a through hole state with the cylinder mounting seat 19 and the rack mounting seat 23, so that the connector 22 can connect the piston rod of the cylinder 18 and the T-shaped end of the rack 14 respectively.

[0034] The guide posts 20 are symmetrically arranged on both sides of the rack 14. One end of the guide post is fixedly connected to the guide post mounting base 21, and the other end passes through the rack mounting base 23 and the fixing block 24 in sequence and is fixedly connected to the cylinder mounting base 19. The fixing block 24 and the rack mounting base 23 are fixedly connected. Correspondingly, both sides of the fixed block 24 are provided with through holes for the guide post to pass through. The through holes are provided with guide post sliding shafts 26. The guide post 20 is set in the guide post sliding shafts 26. The guide post sliding shafts 26 are fixed in the through holes by snap rings to facilitate smoother sliding of the guide post 20. When the cylinder 18 drives the rack 14, the rack 14 drives the fixing block 24 and the rack mounting base 23 to slide along the guide post 20.

[0035] When the cylinder-driven mold structure for unscrewing products is used in this embodiment, the piston rod of the cylinder 18 reciprocates, driving the rack 14 to move within the rack guide block 15 via the connecting piece 22. The movement of the rack 14 causes the fixed block 24 and the rack mounting seat 23 to move along the guide post 20. Simultaneously, the movement of the rack 14 drives the gear 12 meshing with it to rotate synchronously. The rotation of the gear 12 then drives the threaded screw 10 fixedly connected to it to rotate synchronously. The rotation of the threaded screw 10 further drives the threaded insert 9 to rotate synchronously, thereby achieving the effect of unscrewing the thread and achieving the purpose of unscrewing. Through the precise coordination, transmission, and control of the entire system, the goal of high-quality automated production of traditional threaded plastic products is ultimately achieved.

[0036] Finally, it should be noted that the above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. However, any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A mold structure for unscrewing products from cylinders, comprising a lower template (5), characterized in that, The lower template (5) is provided with a cylinder drive unit and a thread demolding unit. The thread demolding unit includes a rack assembly and a gear assembly. The rack assembly includes a rack (14). The gear assembly includes a threaded insert (9), a threaded screw (10), and a gear (12). The gear (12) is fixed on the threaded screw (10) and meshes with the rack (14). The threaded insert (9) is fixed at one end of the threaded screw (10) and corresponds to the thread position of the plastic product. The cylinder drive unit drives the rack (14) to move on the lower template (5). The rack (14) drives the gear (12) to drive the threaded screw (10) to rotate synchronously. The threaded screw (10) drives the threaded insert (9) to rotate to complete the thread demolding.

2. The mold structure for unscrewing products from cylinders according to claim 1, characterized in that, The threaded demolding part also includes a gearbox (16) and a synchronizing nut (13). The threaded screw (10) is horizontally arranged on the gearbox (16). The synchronizing nut (13) is threadedly connected to the other end of the threaded screw (10) and fixed on the housing of the gearbox (16). The synchronizing nut (13) is provided with a synchronizing nut adjusting block (17) for adjusting the thread engagement of the threaded screw (10) and the synchronizing nut (13).

3. The mold structure for unscrewing products from cylinders according to claim 2, characterized in that, The gearbox (16) is a split type.

4. The mold structure for unscrewing products from cylinders according to claim 1, characterized in that, The threaded demolding part also includes a guide sleeve (11), which is sleeved on the threaded screw (10) and located on both sides of the gear (12).

5. The mold structure for unscrewing products from cylinders according to claim 1, characterized in that, The cylinder drive unit includes a cylinder (18), a cylinder mounting seat (19), a rack mounting seat (23), a connector (22), a guide post (20), and a guide post mounting seat (21). The cylinder (18) is mounted on the cylinder mounting seat (19), the guide post mounting seat (21) is fixed on the side of the lower template (5), the rack (14) passes through the guide post mounting seat (21) and is connected to the rack mounting seat (23), the end of the rack (14) is connected to the piston rod of the cylinder (18) through the connector (22), the guide post (20) is symmetrically arranged on both sides of the rack (14), one end of which is fixedly connected to the guide post mounting seat (21), and the other end passes through the rack mounting seat (23) and is connected to the cylinder mounting seat (19).

6. The mold structure for unscrewing products from cylinders according to claim 5, characterized in that, The rack mounting base (23) is provided with a small T-shaped groove (23-1) which is connected to the T-shaped end of the rack (14).

7. The mold structure for unscrewing products from cylinders according to claim 5, characterized in that, A fixing block (24) is also provided between the cylinder mounting seat (19) and the rack mounting seat (23), and a large T-shaped groove (25) for accommodating the connector (22) is formed between the cylinder mounting seat (19), the fixing block (24) and the rack mounting seat (23).

8. The mold structure for unscrewing products from cylinders according to claim 7, characterized in that, The bottom of the large T-shaped groove (25) is in a through-hole state with the cylinder mounting seat (19) and the rack mounting seat (23), and is used for the connector (22) to connect the piston rod of the cylinder (18) and the T-shaped end of the rack (14) respectively.

9. The mold structure for unscrewing products from cylinders according to claim 7, characterized in that, The fixing block (24) and the rack mounting seat (23) are fixedly connected. Both sides of the fixing block (24) and the rack mounting seat (23) are provided with guide post sliding shafts (26), and the guide post (20) is set inside the guide post sliding shaft (26).

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