A cold heading device for fastener production and processing

By introducing activated carbon filtration and liquid nitrogen injection systems into the cold heading unit, the problems of unusable wastewater and unstable processing precision in traditional cold heading units have been solved, realizing the reuse of wastewater and improving processing precision, thus adapting to small-batch, multi-variety production.

CN224333358UActive Publication Date: 2026-06-09ZHAOYUAN FANGYUAN HIGH STRENGTH STANDARD PIECES CO LTD

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
ZHAOYUAN FANGYUAN HIGH STRENGTH STANDARD PIECES CO LTD
Filing Date
2025-07-17
Publication Date
2026-06-09

AI Technical Summary

Technical Problem

Traditional cold heading equipment has problems in bolt production, such as the inability to utilize wastewater, excessive resource consumption, unstable processing accuracy, and difficulty in controlling the straightness of long bolts. It is particularly inefficient in small-batch, multi-variety production.

Method used

A cold heading device comprising a recycling bin, a pretreatment mechanism, a cooling bin, and a mold was designed. Through activated carbon filtration, liquid nitrogen injection, and a cooling pump system, wastewater is purified and reused. The design of the support platform and mold improves processing accuracy and stability.

Benefits of technology

It enables the effective reuse of wastewater, reduces resource consumption, improves processing precision and production efficiency, and meets the needs of small-batch, multi-variety production.

✦ Generated by Eureka AI based on patent content.

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Abstract

This utility model relates to the field of cold heading technology and discloses a cold heading device for fastener production and processing, including a recycling box. A connecting pipe is connected to the right side of the outer wall of the recycling box. A fixing ring is fixedly connected to the inner wall of the connecting pipe, and activated carbon is fixedly connected to the inner wall of the fixing ring. A filter plate is fixedly connected to the bottom of the outer wall of the activated carbon. A water pump is connected to the top of the outer wall of the connecting pipe, and a conveying pipe is connected to the top of the outer wall of the water pump. A cooling pump is connected to the middle of the outer wall of the conveying pipe, and a conveying frame is connected to the bottom of the outer wall of the conveying pipe. In this utility model, a connecting pipe is connected to the right side of the outer wall of the recycling box, and a water pump is connected to the top of the outer wall of the connecting pipe. The water pump absorbs wastewater from the recycling box and conveys it through the connecting pipe. Activated carbon and filter plate are fixedly connected to the inner wall of the connecting pipe.
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Description

Technical Field

[0001] This utility model relates to the field of cold heading technology, and in particular to a cold heading device for fastener production and processing. Background Technology

[0002] In the fastener manufacturing industry, bolts and nuts serve as fundamental connecting components in many fields such as machinery manufacturing, construction engineering, and the automotive industry. Their production efficiency and quality directly affect the development of downstream industries. Cold heading technology, with its high material utilization, fast production efficiency, and excellent product mechanical properties, has become the core technology for bolt and nut processing. The cold heading device is the key equipment for realizing this process. In traditional bolt cold heading, the device usually needs to go through multiple processes to complete the shank forming and head forging steps. Early equipment mostly adopted a single-station design, which could only partially process one blank at a time. To complete the production of a bolt, the blank needed to be transferred multiple times, which not only increased the labor time but also easily led to a decrease in product accuracy due to positioning errors. Especially when processing long bolts, it is difficult to ensure the straightness of the shank, which affects the stability of subsequent assembly. At the same time, for bolts of different specifications, it is necessary to change the corresponding mold and adjust the equipment parameters. The mold changing process is cumbersome and time-consuming, making it difficult to adapt to the production needs of small batches and multiple varieties.

[0003] Traditional cold heading equipment used in fastener production and processing has several limitations in bolt manufacturing. For bolt processing, the machining accuracy and stability are poor. When machining long bolts, it is difficult to control the straightness of the shank. This is because the blank is subjected to uneven stress during cold heading, and the equipment's guidance and positioning of the blank are not precise enough, leading to bending and skewing of the bolt shank, affecting subsequent assembly. Furthermore, the problem of unusable wastewater and resource consumption remains unresolved. Currently, the market addresses this by installing pressure and displacement sensors at the forging die of the cold heading equipment to collect real-time data on force changes and die displacement during the forging process and transmit the data to a central control system. However, the problem of unusable wastewater and resource consumption persists. This leads to excessive water consumption by enterprises, placing a necessary economic burden on water-intensive industries. Additionally, the need for enterprises to purify wastewater before discharge further increases the economic burden. Utility Model Content

[0004] To overcome the above shortcomings, this utility model provides a cold heading device for fastener production and processing, which aims to improve the problem of wastewater not being usable and resource consumption in the prior art.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a cold heading device for fastener production and processing, comprising a recycling box, a connecting pipe connected to the right side of the outer wall of the recycling box, a fixing ring fixedly connected to the inner wall of the connecting pipe, activated carbon fixedly connected to the inner wall of the fixing ring, a filter plate fixedly connected to the bottom of the outer wall of the activated carbon, a water pump connected to the top of the outer wall of the connecting pipe, a conveying pipe connected to the top of the outer wall of the water pump, a cooling pump connected to the middle of the outer wall of the conveying pipe, a conveying frame connected to the bottom of the outer wall of the conveying pipe, a collection trough fixedly connected to the top of the outer wall of the recycling box, a separation plate fixedly connected to the bottom of the inner wall of the collection trough, and a pre-treatment mechanism fixedly connected to the rear side of the outer wall of the recycling box, the pre-treatment mechanism being used for pre-treatment of the objects.

[0006] As a further description of the above technical solution:

[0007] The pretreatment mechanism includes a fixed rod, the bottom of which is fixedly connected to the rear side of the outer wall of the recovery box. A cooling box is fixedly connected to the top of the outer wall of the fixed rod. A second conveying pipe is connected to both sides of the outer wall of the cooling box. A liquid nitrogen tank is connected to the top of the outer wall of the second conveying pipe. A second conveying frame is connected to the bottom of the outer wall of the second conveying pipe. A nozzle is connected to the lower side of the outer wall of the second conveying frame. A rotating rod is rotatably connected to the rear side of the outer wall of the cooling box. An insulation curtain is fixedly connected to the lower side of the outer wall of the rotating rod.

[0008] As a further description of the above technical solution:

[0009] The front side of the outer wall of the cooling box is connected to a drain outlet, and the upper side of the outer wall of the drain outlet is connected to a valve.

[0010] As a further description of the above technical solution:

[0011] A second fixing ring is fixedly connected to the inner wall of the drain outlet, a second activated carbon is fixedly connected to the inner wall of the second fixing ring, and a first filter plate is fixedly connected to the bottom of the outer wall of the second fixing ring.

[0012] As a further description of the above technical solution:

[0013] The outer walls of the recycling bin are fixedly connected to support platforms on both sides, and module one is fixedly connected to the top of the support platforms.

[0014] As a further description of the above technical solution:

[0015] A protective cover is fixedly connected to the top of the outer wall of module one, and a fixing block is fixedly connected to the inner wall of module one.

[0016] As a further description of the above technical solution:

[0017] The top of the outer wall of the support platform is fixedly connected to module two, and a mold groove is opened on the inner side of the outer wall of module two.

[0018] As a further description of the above technical solution:

[0019] A spring is fixedly connected to the top of the outer wall of the fixing block, and a mold is fixedly connected to the top of the outer wall of the spring.

[0020] This utility model has the following beneficial effects:

[0021] 1. In this utility model, a connecting pipe is connected to the right side of the outer wall of the recycling bin. A water pump is connected to the top of the outer wall of the connecting pipe. The water pump absorbs the wastewater in the recycling bin and transports it through the connecting pipe. Activated carbon and a filter plate are fixedly connected to the inner wall of the connecting pipe. The activated carbon and the filter plate 2 purify the wastewater and then transport it through the conveying pipe. A cooling pump is connected to the middle of the outer wall of the conveying pipe. The cooling pump cools the water and then sprays it out through the conveying frame connected to the bottom of the outer wall of the conveying pipe.

[0022] 2. In this utility model, the cooling gas in the liquid nitrogen tank is transported through the second conveying pipe. The bottom of the outer wall of the second conveying pipe is connected to the second conveying frame. The lower side of the outer wall of the second conveying frame is connected to the nozzle. The gas is evenly sprayed out through the nozzle by the conveying pipe and the second conveying frame to achieve pretreatment of the object to be processed. At the same time, a rotating rod is rotatably connected to the rear side of the outer wall of the cooling box. A heat preservation curtain is fixedly connected to the lower side of the outer wall of the rotating rod. Attached Figure Description

[0023] Figure 1 This is a front perspective view of a cold heading device for fastener production and processing proposed in this utility model;

[0024] Figure 2 This is a partial structural exploded view of a cold heading device for fastener production and processing proposed in this utility model;

[0025] Figure 3 This is a partial structural diagram of a cold heading device for fastener production and processing proposed in this utility model;

[0026] Figure 4 This is a partial structural diagram of a cold heading device for fastener production and processing proposed in this utility model;

[0027] Figure 5 This is a partial structural diagram of a cold heading device for fastener production and processing proposed in this utility model;

[0028] Figure 6 This is a partial structural schematic diagram of a cold heading device for fastener production and processing proposed in this utility model.

[0029] Legend:

[0030] 1. Recycling bin; 2. Pretreatment mechanism; 201. Cooling box; 202. Liquid nitrogen tank; 203. Conveying pipe II; 204. Conveying frame II; 205. Nozzle; 206. Fixing rod; 207. Insulation curtain; 208. Rotating rod; 3. Connecting pipe I; 4. Water pump; 5. Cooling pump; 6. Conveying pipe I; 7. Conveying frame I; 8. Separation plate; 9. Collection tank; 10. Filter plate II; 11. Fixing ring I; 12. Activated carbon I; 13. Support platform; 14. Drain outlet; 15. Valve; 16. Activated carbon II; 17. Filter plate I; 18. Fixing ring II; 19. Module I; 20. Fixing block; 21. Spring; 22. Mold; 23. Mold groove; 24. Module II; 25. Protective cover. Detailed Implementation

[0031] 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.

[0032] Please see the appendix Figure 2 - Appendix Figure 4 An embodiment of this utility model provides a cold heading device for fastener production and processing, including a recycling box 1. A connecting pipe 3 is connected to the right side of the outer wall of the recycling box 1. A fixing ring 11 is fixedly connected to the inner wall of the connecting pipe 3. Activated carbon 12 is fixedly connected to the inner wall of the fixing ring 11. A filter plate 10 is fixedly connected to the bottom of the outer wall of the activated carbon 12. A water pump 4 is connected to the top of the outer wall of the connecting pipe 3. A conveying pipe 6 is connected to the top of the outer wall of the water pump 4. A cooling pump 5 is connected to the middle of the outer wall of the conveying pipe 6. A conveying frame 7 is connected to the bottom of the outer wall of the conveying pipe 6. A collection trough 9 is fixedly connected to the top of the outer wall of the recycling box 1. A separation plate 8 is fixedly connected to the bottom of the inner wall of the collection trough 9. A pretreatment mechanism 2 is fixedly connected to the rear side of the outer wall of the recycling box 1. The pretreatment mechanism 2 is used for pretreatment of objects.

[0033] Specifically, it includes a recycling bin 1, whose outer right side is connected to a connecting pipe 3. A fixing ring 11 is fixedly connected to the inner wall of the connecting pipe 3. A filter layer composed of activated carbon 12 is further fixedly connected to the inner wall of the fixing ring 11. A filter plate 10 is fixedly connected to the bottom of the outer wall of the activated carbon 12 to ensure the filtration effect. In addition, a water pump 4 is connected to the top of the outer wall of the connecting pipe 3. A conveying pipe 6 is further connected to the top of the outer wall of the water pump 4. A cooling pump 5 is connected to the middle of the outer wall of the conveying pipe 6 to achieve cooling treatment of the flowing liquid. At the same time, a conveying frame 7 is connected to the bottom of the outer wall of the conveying pipe 6 to support and fix the conveying pipe 6. A collection tank 9 is fixedly connected to the top of the outer wall of the recycling bin 1. A separation plate 8 is fixedly connected to the bottom of the inner wall of the collection tank 9 to effectively separate the collected materials.

[0034] Please see the appendix Figure 3 - Appendix Figure 5 The pretreatment mechanism 2 includes a fixed rod 206. The bottom of the outer wall of the fixed rod 206 is fixedly connected to the rear side of the outer wall of the recovery box 1. The top of the outer wall of the fixed rod 206 is fixedly connected to a cooling box 201. The outer walls of the cooling box 201 are connected to two conveying pipes 203. The top of the outer wall of the conveying pipes 203 is connected to a liquid nitrogen tank 202. The bottom of the outer wall of the conveying pipes 203 is connected to a conveying frame 204. The lower side of the outer wall of the conveying frame 204 is connected to a nozzle 205. The rear side of the outer wall of the cooling box 201 is rotatably connected to a rotating rod 208. The lower side of the outer wall of the rotating rod 208 is fixedly connected to a heat insulation curtain 207.

[0035] Specifically, the pretreatment mechanism 2 includes a fixed rod 206. The bottom of the outer wall of the fixed rod 206 is fixed to the rear side of the outer wall of the recovery box 1 by a sturdy connection to ensure its stability. The top of the outer wall of the fixed rod 206 is firmly connected to a cooling box 201. The outer walls of the cooling box 201 are connected to two conveying pipes 203 on both sides, which serve as conveying connections. The top of the outer wall of the conveying pipes 203 is connected to a liquid nitrogen tank 202 to ensure that liquid nitrogen can flow smoothly into the conveying pipes. The bottom of the outer wall of the conveying pipes 203 is connected to a conveying frame 204. The lower side of the outer wall of the conveying frame 204 is further connected to a nozzle 205 for uniformly spraying coolant. In addition, a rotating rod 208 is installed on the rear side of the outer wall of the cooling box 201 by a rotatable connection. The lower side of the outer wall of the rotating rod 208 is fixedly connected to an insulation curtain 207 to maintain the low temperature environment inside the cooling box 201 and ensure the smooth progress of the pretreatment process.

[0036] Please see the appendix Figure 1 - Appendix Figure 3The cooling box 201 has a drain outlet 14 connected to the front of its outer wall. The upper side of the drain outlet 14 is connected to a valve 15. The inner wall of the drain outlet 14 is fixedly connected to a fixing ring 18. The inner wall of the fixing ring 18 is fixedly connected to activated carbon 16. The bottom of the outer wall of the fixing ring 18 is fixedly connected to a filter plate 17. The outer walls of the recovery box 1 are fixedly connected to support platforms 13 on both sides. The top of the support platform 13 is fixedly connected to a module 19.

[0037] Specifically, a drain outlet 14 for draining accumulated water is provided and connected to the front side of the outer wall of the cooling box 201. A valve 15 for controlling the flow of water is further connected to the upper part of the outer wall of the drain outlet 14 to facilitate the adjustment and opening / closing of the drain. A fixing ring 18 for enhancing structural stability is fixedly connected to the inner wall of the drain outlet 14. An activated carbon 16 with the function of adsorbing impurities is tightly fixedly connected to the inner wall of the fixing ring 18 to effectively purify the pollutants in the discharged water. In addition, a filter plate 17 for preliminary filtration of impurities is also firmly connected to the bottom of the outer wall of the fixing ring 18 to ensure the water quality is initially guaranteed during the drainage process. At the same time, two support platforms 13 for supporting and stabilizing the overall structure are fixedly connected to the two sides of the outer wall of the recovery box 1. A functional module 19 is further fixedly connected to the top of each support platform 13.

[0038] Please see the appendix Figure 4 - Appendix Figure 6 A protective cover 25 is fixedly connected to the top of the outer wall of module 19, a fixing block 20 is fixedly connected to the inner wall of module 19, module 24 is fixedly connected to the top of the outer wall of support platform 13, a mold groove 23 is opened on the inner side of the outer wall of module 24, a spring 21 is fixedly connected to the top of the outer wall of fixing block 20, and a mold 22 is fixedly connected to the top of the outer wall of spring 21.

[0039] Specifically, a protective cover 25 is securely connected to the top of the outer wall of module 19 via a robust connection. This protective cover 25 effectively prevents external impurities from entering the interior of module 19. Similarly, a fixing block 20 for support and positioning is reliably connected to the inner wall of module 19 via a reliable connection. This fixing block 20 ensures the stability and accuracy of the internal components. Module 24 is securely connected to the top of the outer wall of support platform 13 via a robust connection. Module 24 plays an important supporting and connecting role in the structure. A mold groove 23 for placement and positioning is carefully opened on the inner side of the outer wall of module 24. The design of the mold groove 23 allows the relevant components to be accurately placed into it. A spring 21 with elasticity is securely connected to the top of the outer wall of fixing block 20 via a stable connection. This spring 21 can provide elastic support to a certain extent. A mold 22 for molding or processing is further securely connected to the top of the outer wall of spring 21 via a robust connection. This mold 22 plays a key role in the overall structure.

[0040] Working principle: Wastewater is collected through recycling bin 1. A connecting pipe 3 is connected to the right side of the outer wall of recycling bin 1. A water pump 4 is connected to the top of the outer wall of connecting pipe 3. The water pump 4 absorbs the wastewater in recycling bin 1 and transports it through connecting pipe 3. Activated carbon 12 and filter plate 10 are fixedly connected to the inner wall of connecting pipe 3. The activated carbon 12 and filter plate 10 purify the wastewater. Then, it is transported through conveying pipe 6. A cooling pump 5 is connected to the middle of the outer wall of conveying pipe 6. The cooling pump 5 cools the water. Then, it is sprayed out through conveying frame 7 at the bottom of the outer wall of conveying pipe 6 to cool the device and objects. At the same time, a collection tank 9 is fixedly connected to the top of the outer wall of recycling bin 1. A separation plate 8 is fixedly connected to the bottom of the inner wall of collection tank 9. Wastewater is collected through collection tank 9 and filtered out by separation plate 8.

[0041] Two conveying pipes 203 are connected to both sides of the outer wall of the cooling box 201. Two fixed rods 206 are also connected to the two conveying pipes 203. The refrigeration gas in the liquid nitrogen tank 202 is conveyed through the two conveying pipes 203. A conveying frame 204 is connected to the bottom of the outer wall of the two conveying pipes 203. A nozzle 205 is connected to the lower side of the outer wall of the two conveying frame 204. The conveyed gas through the two conveying pipes 203 and the two conveying frame 204 is evenly sprayed by the nozzle 205 to achieve pretreatment of the object to be processed. At the same time, a rotating rod 208 is rotatably connected to the rear side of the outer wall of the cooling box 201. A heat insulation curtain 207 is fixedly connected to the lower side of the outer wall of the rotating rod 208. The heat insulation curtain 207 and the rotating rod 208 play a role in heat preservation. At the same time, a fixed rod 206 is fixedly connected to the bottom of the cooling box 201 to support the cooling box 201.

[0042] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing 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. 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 cold heading device for fastener production and processing, comprising a recycling bin (1), characterized in that: The outer wall of the recycling bin (1) is connected to a connecting pipe (3) on the right side. A fixing ring (11) is fixedly connected to the inner wall of the connecting pipe (3). Activated carbon (12) is fixedly connected to the inner wall of the fixing ring (11). A filter plate (10) is fixedly connected to the bottom of the outer wall of the activated carbon (12). A water pump (4) is connected to the top of the outer wall of the connecting pipe (3). A conveying pipe (6) is connected to the top of the outer wall of the water pump (4). A cooling pump (5) is connected to the middle of the outer wall of the conveying pipe (6). A conveying frame (7) is connected to the bottom of the outer wall of the conveying pipe (6). A collection trough (9) is fixedly connected to the top of the outer wall of the recycling bin (1). A separation plate (8) is fixedly connected to the bottom of the inner wall of the collection trough (9). A pretreatment mechanism (2) is fixedly connected to the rear side of the outer wall of the recycling bin (1). The pretreatment mechanism (2) is used for pretreatment of the objects.

2. The cold heading device for fastener production and processing according to claim 1, characterized in that: The pretreatment mechanism (2) includes a fixed rod (206), the bottom of the outer wall of the fixed rod (206) is fixedly connected to the rear side of the outer wall of the recovery box (1), the top of the outer wall of the fixed rod (206) is fixedly connected to a cooling box (201), the two sides of the outer wall of the cooling box (201) are connected to a second conveying pipe (203), the top of the outer wall of the second conveying pipe (203) is connected to a liquid nitrogen tank (202), the bottom of the outer wall of the second conveying pipe (203) is connected to a second conveying frame (204), the lower side of the outer wall of the second conveying frame (204) is connected to a nozzle (205), the rear side of the outer wall of the cooling box (201) is rotatably connected to a rotating rod (208), and the lower side of the outer wall of the rotating rod (208) is fixedly connected to a heat insulation curtain (207).

3. The cold heading device for fastener production and processing according to claim 2, characterized in that: The cooling box (201) has a drain outlet (14) connected to the front side of its outer wall, and a valve (15) is connected to the upper side of the outer wall of the drain outlet (14).

4. The cold heading device for fastener production and processing according to claim 3, characterized in that: The inner wall of the drain outlet (14) is fixedly connected to a second fixing ring (18), the inner wall of the second fixing ring (18) is fixedly connected to a second activated carbon (16), and the bottom of the outer wall of the second fixing ring (18) is fixedly connected to a first filter plate (17).

5. A cold heading device for fastener production and processing according to claim 1, characterized in that: The outer walls of the recycling bin (1) are fixedly connected to support platforms (13), and the top of the support platform (13) is fixedly connected to module one (19).

6. The cold heading device for fastener production and processing according to claim 5, characterized in that: A protective cover (25) is fixedly connected to the top of the outer wall of module one (19), and a fixing block (20) is fixedly connected to the inner wall of module one (19).

7. A cold heading device for fastener production and processing according to claim 5, characterized in that: The top of the outer wall of the support platform (13) is fixedly connected to module two (24), and the inner side of the outer wall of module two (24) is provided with a mold groove (23).

8. A cold heading device for fastener production and processing according to claim 6, characterized in that: A spring (21) is fixedly connected to the top of the outer wall of the fixing block (20), and a mold (22) is fixedly connected to the top of the outer wall of the spring (21).