Annealing and cold heading forming device for hexagon socket screw

Abstract

The utility model discloses an inside hexagonal bolt annealing cold heading forming device which comprises a cold heading assembly, a side plate and a conveying assembly, the cold heading assembly is located on the right side of the side plate, the cold heading assembly comprises a cold heading table, a die, a first servo motor and a casting groove, the cold heading table is arranged on the right side of the side plate, and the die is arranged on the side plate. A plurality of sets of molds are fixed to the inner side of the cold heading table, casting grooves are embedded in the inner sides of the molds, the rear end of the cold heading table is connected with the first servo motor, the conveying assembly is located on the right side of the side plate, and the conveying assembly comprises a supporting plate, an upper threaded rod, a lower threaded rod, a synchronous belt and a clamping assembly. The upper threaded rod is connected to the front end of the supporting plate through a bearing, and a lower threaded rod is arranged below the upper threaded rod in parallel. And residual cooling liquid on the inner side of the casting groove can be cleaned, when extrusion is conducted again, the situation that the cooling liquid cannot flow out of the inner side is avoided, and therefore the bolt quality is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of hexagon socket bolt processing, in particular to an annealing and cold heading forming device for a hexagon socket bolt. Background Art

[0002] The cold heading machine is a stamping machine in mechanical manufacturing. It is a device that converts the blank into a hexagon socket bolt without making any changes to the raw material (mainly softening or hardening or similar treatment). For example, the patent document with application number CN202222867278.1 discloses a multi-station cold heading machine cold heading device for fastener processing, which sets two multi-station dies to replace the original multi-station die to process the fastener, so that the two multi-station dies cooperate with each other, and the cold heading machine continuously processes it.

[0003] However, in similar solutions mentioned above, the bolts need to be extruded multiple times during the forming process. In traditional machining methods, the concentricity of the head and the rod is poor, resulting in unstable quality of the bolts and a high product scrap rate. In addition, during the machining process, coolant remains on the inside of the casting groove. When extruded again, the coolant cannot flow out from the inside, thereby reducing the quality of the bolts.

[0004] Therefore, in view of this, the existing structural deficiencies are studied and improved, and a hexagon socket bolt annealing cold heading forming device is proposed. Utility Model Content

[0005] In view of the shortcomings of the prior art, the utility model provides a hexagon socket bolt annealing cold heading forming device, which solves the above-mentioned similar scheme proposed in the above-mentioned background technology. The bolt needs to be extruded multiple times during the forming process. In the traditional machining method, the concentricity of the head and the rod is poor, resulting in unstable quality of the bolt and product scrap rate. In addition, during the machining process, coolant remains on the inside of the casting groove. When extruded again, the coolant cannot flow out from the inside, thereby reducing the quality of the bolt.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a hexagon socket bolt annealing cold heading forming device, comprising a cold heading assembly, a side plate and a conveying assembly, the cold heading assembly is located on the right side of the side plate, and the cold heading assembly comprises a cold heading table, a mold, a first servo motor, and a casting groove, the cold heading table is arranged on the right side of the side plate, and a plurality of groups of the molds are fixed on the inner side of the cold heading table, and a casting groove is embedded in the inner side of the mold, the rear end of the cold heading table is connected with the first servo motor, and the conveying assembly is located on the right side of the side plate, and the conveying assembly comprises a support plate, an upper threaded rod, a lower threaded rod, a synchronous belt and a clamping assembly, the upper end of the cold heading table is slidably connected with the support plate, and the front end bearing of the support plate is connected with the upper threaded rod, and a lower threaded rod is arranged in parallel below the upper threaded rod, the left end of the upper threaded rod is connected with the synchronous belt, and the outer side of the lower threaded rod is penetrated by the clamping assembly.

[0007] Furthermore, a support rod is slidably provided inside the casting groove, and a support spring is fixed to the right end of the support rod, and the cold heading table forms a rotating structure through a first servo motor.

[0008] Furthermore, a plurality of groups of hydraulic cylinders are provided through the inner side of the side plate, and a stamping die seat is fixed to the right side of the hydraulic cylinder.

[0009] Furthermore, a water pipe is arranged on the top of the side plate, and a plurality of groups of sprinkler heads are arranged through the right side of the water pipe.

[0010] Furthermore, the threads of the upper threaded rod and the lower threaded rod have opposite rotation directions, and the right end coupling of the upper threaded rod is connected to a second servo motor.

[0011] Furthermore, the clamping assembly includes an upper clamping block and a short clamping block, and the short clamping block is disposed through the outer side of the lower threaded rod, and a long clamping block is disposed on the left side of the short clamping block.

[0012] The utility model provides a hexagon socket bolt annealing cold heading forming device, which has the following beneficial effects:

[0013] It can improve the concentricity of the head and the rod during multiple extrusion processes, improve the quality of the bolts, and reduce the product scrap rate. In addition, during the processing, the coolant remaining on the inside of the casting tank can be cleaned. When extruding again, the coolant can be prevented from flowing out on the inside, thereby improving the quality of the bolts. The specific contents are as follows:

[0014] The hydraulic cylinder drives the stamping die base to move rightward to squeeze the blank inside the casting groove. The first servo motor drives the cold heading table to rotate along the motor output shaft, and cooperates with the spray head to pour the coolant on the inside of the casting groove, and then drives the cold heading table to reverse and reset to throw out the coolant. At the same time, after each round is completed, the second servo motor drives the two groups of threaded rods to rotate, so that after the two groups of clamping blocks clamp the bolt rod, the bolt rod will move along the inclined surface to the central part due to the extrusion on both sides, thereby improving the concentricity. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a three-dimensional schematic diagram of a hexagon socket bolt annealing and cold heading forming device of the utility model;

[0016] Figure 2 This is a schematic diagram of the structure of a conveying assembly of a hexagon socket bolt annealing and cold heading forming device of the utility model;

[0017] Figure 3 This is a schematic diagram of the installation structure of a cold heading assembly and a conveying assembly of a hexagon socket bolt annealing cold heading forming device of the utility model;

[0018] Figure 4 The utility model is a schematic diagram of the mold structure of a hexagon socket bolt annealing cold heading forming device.

[0019] In the figure: 1. cold heading assembly; 101. cold heading table; 102. mold; 103. first servo motor; 104. casting groove; 141. support rod; 142. support spring; 2. side plate; 3. hydraulic cylinder; 4. stamping die base; 5. water pipe; 6. sprinkler head; 7. conveying assembly; 701. support plate; 702. upper threaded rod; 703. lower threaded rod; 704. synchronous belt; 705. clamping assembly; 721. second servo motor; 751. long clamping block; 752. short clamping block. DETAILED DESCRIPTION

[0020] The following is a further detailed description of the implementation of the present utility model in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present utility model, but cannot be used to limit the scope of the present utility model.

[0021] like Figures 1 to 4As shown, a hexagon socket bolt annealing cold forging forming device includes a cold heading assembly 1, a side plate 2 and a conveying assembly 7. The cold heading assembly 1 is located on the right side of the side plate 2, and the cold heading assembly 1 includes a cold heading table 101, a mold 102, a first servo motor 103, and a casting groove 104. The right side of the side plate 2 is provided with a cold heading table 101, and the inner side of the cold heading table 101 is fixed with a plurality of groups of molds 102. The position of the mold 102 is limited by the cold heading table 101 to avoid position deviation after stamping, and the inner side of the mold 102 is embedded with a casting groove 104, and the inner side of the casting groove 104 is slidably provided with a support rod 141, and A support spring 142 is fixed to the right end of the support rod 141, which decomposes the impact of the stamping die base 4 through the support spring 142, and the elastic force generated by the support spring 142 is restored to automatically pop out the blank. The rear end of the cold heading table 101 is connected to the first servo motor 103. The cold heading table 101 forms a rotating structure through the first servo motor 103, so that the coolant can be accurately poured on the inner side of the casting groove 104, and the coolant inside the casting groove 104 can be thrown out, thereby cleaning the coolant remaining on the inner side of the casting groove 104. When extruding again, it is prevented that the coolant cannot flow out on the inside, thereby improving the quality of the bolt.

[0022] A plurality of groups of hydraulic cylinders 3 are provided on the inner side of the side panel 2, and a stamping die base 4 is fixed on the right side of the hydraulic cylinder 3. The stamping die base 4 is driven by the hydraulic cylinder 3 to extrude the blank for multiple times, so that the hexagon socket bolts are quickly formed. A water pipe 5 is provided on the top of the side panel 2, and a plurality of groups of spray heads 6 are provided on the right side of the water pipe 5. Cooling liquid is sprayed into the casting groove 104 through the water pipe 5 and the spray head 6 to avoid deformation of the inner side caused by the temperature increase of the inner side of the casting groove 104, thereby improving the quality of the hexagon socket bolts.

[0023] The conveying assembly 7 is located on the right side of the side plate 2. The conveying assembly 7 includes a support plate 701, an upper threaded rod 702, a lower threaded rod 703, a synchronous belt 704 and a clamping assembly 705. The upper end of the cold heading table 101 is slidably connected to the support plate 701. The support plate 701 is driven by the outer cylinder to move laterally, so as to transfer the bolts inside the clamping assembly. The front end bearing of the support plate 701 is connected to the upper threaded rod 702, and the lower threaded rod 703 is arranged parallel to the lower side of the upper threaded rod 702. The thread rotation directions of the upper threaded rod 702 and the lower threaded rod 703 are opposite, so that the two groups of clamping blocks can move toward each other, thereby clamping the rod of the bolt, and the right end coupling of the upper threaded rod 702 is connected to the second servo motor 721, and the left end of the upper threaded rod 702 is connected to the synchronous belt 704. Belt 704 is used to automatically drive the two groups of threaded rods to rotate through the second servo motor 721 and the synchronous belt 704, thereby improving the degree of automation. A clamping assembly 705 is provided on the outer side of the lower threaded rod 703. The clamping assembly 705 includes a long clamping block 751 and a short clamping block 752. A short clamping block 752 is provided on the outer side of the lower threaded rod 703, and a long clamping block 751 is provided on the left side of the short clamping block 752. The cross-section of the long clamping block 751 and the short clamping block 752 facing each other is two groups of triangles facing each other. When the two groups of clamping blocks contact the bolt rod at the same time and squeeze inward, the bolt rod slides along the triangular inclined surface until it is tangent to the inclined surfaces of the four groups of triangles. At this time, the concentricity of the head and the rod can be improved, the quality of the bolt is improved, and the product scrap rate is reduced.

[0024] In summary, when the hexagon socket bolt annealing cold forging forming device is used, the blank is first placed in the casting groove 104, the hydraulic cylinder 3 is started to drive the stamping die seat 4 to move to the right, and is inserted into the casting groove 104 to impact the blank, the blank is deformed by pressure, and the support rod 141 and the compression support spring 142 are squeezed to the right, and then the hydraulic cylinder 3 is pulled out to the left, the support spring 142 is restored and drives the support rod 141 and the blank to move to the left until the blank is separated from the casting groove 104, and at the same time, the upper threaded rod 702 is driven to rotate by the second servo motor 721, and the upper clamping block 751 is driven to The upper threaded rod 702 drives the lower threaded rod 703 to rotate through the synchronous belt 704, and the lower threaded rod 703 drives the short clamping block 752 to move to the left, so that the two groups of clamping blocks clamp the bolt rod, and the bolt rod moves to the central part along the inclined surface, and the first servo motor 103 is started. The first servo motor 103 drives the cold heading table 101 to rotate along the motor output shaft. At this time, the coolant is sprayed out from the spray head 6 and flows into the inner side of the casting groove 104, and then the first servo motor 103 drives the cold heading table 101 to reverse, and the centrifugal force is used to throw out the coolant during the resetting process.

Claims

1. A hexagon socket bolt annealing and cold heading forming device, comprising a cold heading assembly (1), a side plate (2) and a conveying assembly (7), characterized in that: The cold heading assembly (1) is located on the right side of the side plate (2), and the cold heading assembly (1) comprises a cold heading table (101), a mold (102), a first servo motor (103), and a casting groove (104); the cold heading table (101) is arranged on the right side of the side plate (2), and a plurality of groups of the molds (102) are fixed on the inner side of the cold heading table (101), and the casting groove (104) is embedded in the inner side of the mold (102); the rear end of the cold heading table (101) is connected to the first servo motor (103), and the conveying assembly (7) is located on the right side of the side plate (2), and The conveying assembly (7) comprises a support plate (701), an upper threaded rod (702), a lower threaded rod (703), a synchronous belt (704) and a clamping assembly (705); the upper end of the cold heading table (101) is slidably connected to the support plate (701), the front end bearing of the support plate (701) is connected to the upper threaded rod (702), the lower threaded rod (703) is arranged parallel to the lower side of the upper threaded rod (702), the left end of the upper threaded rod (702) is connected to the synchronous belt (704), and the clamping assembly (705) is arranged through the outer side of the lower threaded rod (703).

2. The hexagon socket bolt annealing and cold heading forming device according to claim 1, characterized in that: A support rod (141) is slidably arranged inside the casting groove (104), a support spring (142) is fixed to the right end of the support rod (141), and the cold heading table (101) forms a rotating structure through a first servo motor (103).

3. The hexagon socket bolt annealing and cold heading forming device according to claim 1, characterized in that: A plurality of groups of hydraulic cylinders (3) are provided through the inner side of the side plate (2), and a punching die seat (4) is fixed to the right side of the hydraulic cylinder (3).

4. The hexagon socket bolt annealing and cold heading forming device according to claim 3, characterized in that: A water pipe (5) is arranged on the top of the side plate (2), and a plurality of groups of spray heads (6) are arranged through the right side of the water pipe (5).

5. The hexagon socket bolt annealing and cold heading forming device according to claim 1, characterized in that: The threads of the upper threaded rod (702) and the lower threaded rod (703) are in opposite directions, and a second servo motor (721) is connected to the right end coupling of the upper threaded rod (702).

6. The hexagon socket bolt annealing and cold heading forming device according to claim 5, characterized in that: The clamping assembly (705) comprises a long clamping block (751) and a short clamping block (752), and the short clamping block (752) is provided through the outer side of the lower threaded rod (703), and the long clamping block (751) is provided on the left side of the short clamping block (752).

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