High-efficiency forming equipment for bolt head structure

Abstract

The utility model discloses bolt head structure high -efficient forming equipment, including first press (1), second press (2) and workpiece circulation conveying device (3), the first press (1) is installed with first cold heading die (111) on first press head (11), the second press (2) is installed with second cold heading die (211) on second press head (21), the support (31) of workpiece circulation conveying device (3) is arranged and placed carrier (33), is provided cylinder assembly (32) on workpiece circulation conveying device (3), cylinder assembly (32) can drive carrier (33) and move in cycle according to setting step, carrier (33) has the hole site for fixed bar material (5) on, first press head (11) and second press head (21) are in order and are located above the circulation route of carrier (33). The utility model discloses the processing production of small batch bolt head, can improve the forming efficiency of bolt head.

Description

Technical Field

[0001] This utility model relates to the field of bolt processing and manufacturing technology, specifically to a high-efficiency forming equipment for bolt head structures. Background Technology

[0002] Bolts are common fasteners, and their main structure includes a bolt head, bolt shank, and threads. The bolt head is typically formed using a cold heading process. Mature multi-station cold heading machines are readily available for purchase. During operation, the corresponding cold heading die is installed according to the shape and size of the bolt head. Multi-station cold heading machines are highly efficient automated equipment that can significantly improve production efficiency in mass production. However, due to their higher cost, they are not suitable for small-batch production. Therefore, for small-batch bolt production, a press is often used instead of a cold heading machine to form the bolt head structure. This involves mounting the cold heading die on the press and cold heading the material. For example, for hexagonal socket head cap screws, two cold heading machines are often used. One machine is equipped with a first cold heading die for forming the cylindrical structure, and the other machine is equipped with a second cold heading die for forming the hexagonal socket. During production, the end of the bar stock is first cold-headed into a cylindrical structure on one machine, and then transferred to the other machine for cold-heading into the hexagonal socket structure. Although this method reduces costs compared to using a multi-station cold heading machine, the economic advantage is not significant due to lower production efficiency. Utility Model Content

[0003] This invention provides a high-efficiency bolt head forming equipment, which can improve the processing efficiency of bolt head forming in small-batch production, thereby improving economic benefits.

[0004] The technical solution of this utility model is as follows:

[0005] A high-efficiency bolt head forming device includes a first press, a second press, and a workpiece circulation conveying device. A first cold heading die is mounted on the first press head of the first press; a second cold heading die is mounted on the second press head of the second press; a carrier is arranged on the support of the workpiece circulation conveying device, and a cylinder assembly is provided on the workpiece circulation conveying device; the cylinder assembly can drive the carrier to move cyclically in a set step length; the carrier has holes for fixing bar stock; the first press head and the second press head are sequentially positioned above the circulation path of the carrier.

[0006] Compared with the prior art, this utility model sets up a first press, a second press, and a workpiece circulation conveying device. During operation, the bar stock is placed in the hole on the carrier and moves intermittently according to the designed step length, continuously circulating. When it moves to the bottom of the press head, the press head presses down to perform cold heading. After two cold heading processes by the first cold heading die and the second cold heading die, the bolt head can be efficiently formed. This is suitable for the efficient forming of small batch bolt head structures, improving enterprise efficiency.

[0007] As an optimization, in the aforementioned high-efficiency bolt head forming equipment, the support has a carrier groove, and the carriers are placed in two rows in the carrier groove, namely a first circulation row and a second circulation row, and the carrier groove has two empty spaces; the cylinder assembly includes a first cylinder, a second cylinder, a third cylinder, and a fourth cylinder, the first cylinder is used to advance the carriers of the first circulation row forward by one step; the second cylinder is used to push the carriers at the end of the first circulation row into the second circulation row; the third cylinder is used to advance the carriers of the second circulation row forward by one step; and the fourth cylinder is used to push the carriers at the end of the second circulation row into the first circulation row. The workpiece circulating conveying device adopts the above structural design, which can meet the requirement of the carriers moving cyclically according to a set step length, and is easy to implement and has high reliability.

[0008] As an optimization, in the aforementioned high-efficiency bolt head structure forming equipment, the cylinder assembly further includes a pusher plate; a pusher plate is connected to the piston rod ends of the first cylinder, the second cylinder, the third cylinder, and the fourth cylinder. The pusher plate enhances stability during the movement of the carrier.

[0009] As an optimization, in the aforementioned high-efficiency bolt head forming equipment, the first and second presses are positioned on both sides of the workpiece circulation conveying device. During operation, the first and second press heads press down simultaneously. Therefore, during operation, both sides of the workpiece circulation conveying device are simultaneously impacted by the presses, resulting in better stability compared to a single-sided force application.

[0010] As an optimization, in the aforementioned high-efficiency bolt head forming equipment, a feeding mechanism is provided at the end of the second circulation column. The feeding mechanism includes a clamping device, a flipping device, and a fifth cylinder. The flipping device is connected to the fifth cylinder, and the clamping device is connected to the flipping device. Thus, automatic feeding can be achieved using the feeding mechanism. Specifically, the fifth cylinder extends, the clamping device clamps the carrier at the end of the second circulation column, then the fifth cylinder retracts, the flipping device flips the carrier 180°, and the workpiece falls under gravity. Afterward, the flipping device resets, the fifth cylinder extends, the clamping device releases the carrier, and the carrier returns to its original position. Further, the flipping device is a rotary cylinder, and the clamping device is a gripper cylinder.

[0011] As an optimization, in the aforementioned high-efficiency bolt head forming equipment, a storage box is provided below the feeding mechanism. The storage box is used to store the workpiece after the bolt head has been processed. Attached Figure Description

[0012] Figure 1 This is a structural schematic diagram of the high-efficiency forming equipment for bolt head structure according to this utility model.

[0013] Figure 2 This is a partial enlarged schematic diagram of the high-efficiency forming equipment for bolt head structure of this utility model.

[0014] Figure 3 This is a top view of the high-efficiency forming equipment for bolt head structure of this utility model.

[0015] Figure 4 This is a cross-sectional view of the first press head, bar stock, and carrier of the high-efficiency forming equipment for bolt head structure of this utility model.

[0016] Figure 5 This is a cross-sectional view of the second press head, bar stock, and carrier of the high-efficiency forming equipment for bolt head structure of this utility model.

[0017] Figure 6 yes Figure 1 Enlarged schematic diagram of part A of the high-efficiency forming equipment for bolt head structure of this utility model.

[0018] The labels in the attached diagram are as follows: 1-First press; 11-First press head; 111-First cold heading die; 2-Second press; 21-Second press head; 211-Second cold heading die; 3-Workpiece circulation conveying device; 31-Support; 32-Cylinder assembly; 321-First cylinder; 322-Second cylinder; 323-Third cylinder; 324-Fourth cylinder; 325-Push plate; 33-Carrier; 4-Unloading mechanism; 41-Clamping device; 42-Tilting device; 43-Fifth cylinder; 5-Bar stock; 51-First blank; 52-Second blank; 6-Storage box. Detailed Implementation

[0019] The technical solution of this utility model will be further described in detail below through specific embodiments and with reference to the accompanying drawings, but this should not be construed as limiting the present utility model. Contents not described in detail in the following embodiments are all common knowledge in the art or can be implemented using conventional technical means in the art.

[0020] Reference to embodiments of this utility model Figures 1-6 .

[0021] like Figure 1 , Figure 2As shown, the high-efficiency forming equipment for bolt head structures includes a workpiece circulation conveying device 3, a first press 1, and a second press 2 disposed on both sides of the workpiece circulation conveying device 3. The first press 1 includes a first press head 11, and the second press 2 includes a second press head 21. The first press head 11 and the second press head 21 are sequentially disposed above the circulation path of the carrier 33. The workpiece circulation conveying device 3 includes a support 31 for support, the support 31 having a carrier groove, the carriers 33 being placed in two rows in the carrier groove, and the carrier groove having two empty spaces. A cylinder assembly 32 is fixedly installed on the support 31, the cylinder assembly 32 being used to drive the carriers 33 to circulate in a set step length. The carriers 33 have holes for fixing the bar stock 5.

[0022] like Figures 1-3 As shown, the carriers 33 are arranged in two rows in the carrier slot, namely the first circulating row and the second circulating row. The cylinder assembly 32 includes a first cylinder 321, a second cylinder 322, a third cylinder 323, and a fourth cylinder 324. The first cylinder 321 is used to advance the first circulating row forward by one step; the second cylinder 322 is used to push the carriers 33 at the end of the first circulating row into the second circulating row; the third cylinder 323 is used to advance the second circulating row forward by one step; and the fourth cylinder 324 is used to push the carriers 33 at the end of the second circulating row into the first circulating row. The cylinder assembly 32 also includes a pusher plate 325; each piston rod end of the first cylinder 321, the second cylinder 322, the third cylinder 323, and the fourth cylinder 324 is connected to a pusher plate 325. In the embodiment, the first cylinder 321, the third cylinder 323, the second cylinder 322, and the fourth cylinder 324 operate sequentially.

[0023] like Figures 1-3 , Figure 6 As shown, a feeding mechanism 4 is provided at the end of the second circulating column. The feeding mechanism 4 includes a clamping device 41, a flipping device 42, and a fifth cylinder 43. The flipping device 42 is connected to the fifth cylinder 43, and the clamping device 41 is connected to the flipping device 42. The flipping device 42 is a rotary cylinder, and the clamping device 41 is a gripper cylinder. The clamping device 41 is used to clamp the carrier 33 and move it out of or into the workpiece circulating conveyor 3 under the action of the fifth cylinder 43. The flipping device 42 is used to flip the carrier 33. The feeding process is as follows: the fifth cylinder 43 extends, the clamping device 41 clamps the carrier 33 at the end of the second circulating column, then the fifth cylinder 43 retracts, the flipping device 42 flips the carrier 33 180°, the workpiece on the carrier 33 falls off under the action of gravity, then the flipping device 42 resets, the fifth cylinder 43 extends, the clamping device 41 releases the carrier 33, and the carrier 33 returns to the end of the second circulating column.

[0024] like Figure 1 As shown, a storage box 6 is provided below the unloading mechanism 4. After the carrier 33 is flipped, the workpiece will fall into the storage box 6 under the action of gravity.

[0025] like Figure 2 As shown, after the bar stock 5 is processed by the first press 1, it forms a first blank 51 with a cylindrical structure at the head. After the first blank 51 is processed by the second press 2, it forms a second blank 52 with a cylindrical structure at the head and an internal hexagonal flower shape on the cylinder.

[0026] like Figure 4 As shown, in order to process the bar stock 5 into the first blank 51, the lower part of the first press head 11 is provided with a first cold heading die 111, and the arrow in the figure indicates the direction of movement of the carrier 33.

[0027] like Figure 5 As shown, in order to process the first blank 51 into the second blank 52, the lower part of the second press head 21 is provided with a second cold heading die 211, and the arrow in the figure indicates the direction of movement of the carrier 33.

[0028] In this embodiment, the working process of the high-efficiency bolt head forming equipment is as follows: Carriers 33 are placed in two rows in the carrier slots of the workpiece circulation conveying device 3, namely the first circulation column and the second circulation column, and the carrier slots have two empty spaces. The first cylinder 321, the third cylinder 323, the second cylinder 322, and the fourth cylinder 324 operate sequentially, causing the carriers 33 to circulate. Multiple bars 5 to be processed are placed manually or by a feeding machine on the carriers 33 between the first press 1 and the first cylinder 321. After the first cylinder 321 completes one action, the first press head 11 and the second press head 21 press down simultaneously, and then the third cylinder 323 operates. After the second cylinder 322 completes one action, the unloading mechanism 4 unloads the material. After the carrier 33 at the end of the second circulation column completes unloading and returns to the second circulation column, the fourth cylinder 324 operates.

[0029] It should be noted that in the above embodiments of this utility model, the high-efficiency bolt head structure forming equipment is used for the head forming of T-shaped internal hexagon bolts. When implementing this utility model, a cold heading mold is set according to the shape of the bolt head, which can be used for the head forming of other types of bolts.

[0030] The foregoing general description of the utility model and its specific embodiments should not be construed as limiting the technical solution of the utility model. Those skilled in the art, based on the disclosure of this application, can add, reduce, or combine the disclosed technical features in the foregoing general description and / or specific embodiments (including examples) without departing from the constituent elements of the utility model, to form other technical solutions within the protection scope of this utility model.

Claims

1. A high-efficiency forming equipment for bolt head structures, characterized in that: The device includes a first press (1), a second press (2), and a workpiece circulation conveying device (3); a first cold heading die (111) is installed on the first press head (11) of the first press (1); a second cold heading die (211) is installed on the second press head (21) of the second press (2); a carrier (33) is arranged on the support (31) of the workpiece circulation conveying device (3), and a cylinder assembly (32) is provided on the workpiece circulation conveying device (3); the cylinder assembly (32) can drive the carrier (33) to move cyclically according to a set step length; the carrier (33) has holes for fixing the bar stock (5); the first press head (11) and the second press head (21) are arranged in sequence above the circulation route of the carrier (33).

2. The high-efficiency bolt head structure forming equipment according to claim 1, characterized in that: The support (31) has a carrier slot, and the carriers (33) are placed in two rows in the carrier slot, namely the first circulation column and the second circulation column, and the carrier slot has two empty spaces; the cylinder assembly (32) includes a first cylinder (321), a second cylinder (322), a third cylinder (323), and a fourth cylinder (324). The first cylinder (321) is used to advance the carriers (33) of the first circulation column forward by one step; the second cylinder (322) is used to push the carriers (33) at the end of the first circulation column into the second circulation column; the third cylinder (323) is used to advance the carriers (33) of the second circulation column forward by one step; and the fourth cylinder (324) is used to push the carriers (33) at the end of the second circulation column into the first circulation column.

3. The high-efficiency bolt head structure forming equipment according to claim 2, characterized in that: The cylinder assembly (32) further includes a push plate (325), and a push plate (325) is connected to the piston rod end of the first cylinder (321), the second cylinder (322), the third cylinder (323), and the fourth cylinder (324).

4. The high-efficiency forming equipment for bolt head structures according to claim 1 or 2, characterized in that: The first press (1) and the second press (2) are located on both sides of the workpiece circulation conveying device (3).

5. The high-efficiency bolt head structure forming equipment according to claim 2, characterized in that: The second cycle column is provided with a feeding mechanism (4) at the end; the feeding mechanism (4) includes a clamping device (41), a flipping device (42) and a fifth cylinder (43), the flipping device (42) is connected to the fifth cylinder (43), and the clamping device (41) is connected to the flipping device (42).

6. The high-efficiency bolt head structure forming equipment according to claim 5, characterized in that: The flipping device (42) is a rotary cylinder, and the clamping device (41) is a gripper cylinder.

7. The high-efficiency bolt head structure forming equipment according to claim 5, characterized in that: A storage box (6) is provided below the feeding mechanism (4).

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