Bolt head cold extrusion equipment

Abstract

The utility model provides cold extrusion equipment for a bolt head, and mainly relates to the technical field of cold extrusion equipment. The bolt head cold extrusion equipment comprises a base, a first fixing base, a second fixing base and a third fixing base are fixedly installed on the base, a first guide rod set is fixedly connected between the first fixing base and the second fixing base, a second guide rod set is fixedly connected between the second fixing base and the third fixing base, a sliding base is installed on the first guide rod set in a sliding mode, and a second guide rod set is fixedly connected between the second fixing base and the third fixing base. A die head replacing assembly is arranged on the sliding seat, a top seat is installed on the second guide rod set in a sliding mode, a first hydraulic cylinder is fixedly installed in the middle of the first fixing seat, the end of a piston rod of the first hydraulic cylinder is connected with the sliding seat, a second hydraulic cylinder is fixedly installed on the top of the second fixing seat, and a third hydraulic cylinder is fixedly installed on the third fixing seat. According to the utility model, the stamping die heads can be quickly switched through the die head replacement assembly, so that cold extrusion processing of bolt heads with different shapes and specifications is realized, the production efficiency is improved, and the production cost is reduced.

Description

Technical Field

[0001] This utility model mainly relates to the field of cold extrusion equipment technology, specifically a cold extrusion equipment for bolt heads. Background Technology

[0002] Bolt holes play a variety of important roles in mechanical design, including fixing parts, facilitating disassembly, providing support, adjusting position, preventing loosening, providing overload protection, reducing weight, and facilitating installation. As the most basic fastener in the machinery industry, the head shape of bolts (such as hexagonal, countersunk, semi-circular, square, and T-shaped heads) needs to be customized according to the mechanical properties and assembly space requirements of the application scenario. Cold extrusion has become one of the mainstream processes for bolt head forming due to its advantages of high efficiency, high material utilization, and high product strength.

[0003] Traditional cold extrusion equipment typically uses a "one die, one stamping head" structure, meaning one set of dies corresponds to one type of stamping head, allowing only the production of bolt heads of a single shape. If a change in product type is required, the entire set of dies and stamping heads must be replaced. This production method leads to the following problems:

[0004] Low production efficiency: The mold change process takes up to several hours, especially in multi-variety, small-batch production scenarios, where the proportion of equipment idle time increases significantly, making it difficult to meet the needs of flexible production.

[0005] High production costs: Different shapes of bolts require multiple sets of special molds and stamping heads, which increases the cost of mold procurement, storage and maintenance; at the same time, frequent mold changes can lead to increased mold wear, further pushing up production costs.

[0006] Poor product consistency: Manual mold changing may lead to mold alignment deviations due to insufficient installation accuracy, affecting the dimensional accuracy and surface quality of bolt heads, and even causing equipment failure. Utility Model Content

[0007] To address the shortcomings of existing technologies, this utility model provides a bolt head cold extrusion device that can quickly switch stamping dies via a die head changing assembly to achieve cold extrusion processing of bolt heads of different shapes and specifications, thereby improving production efficiency and reducing production costs.

[0008] To achieve the above objectives, this utility model employs the following technical solution:

[0009] A cold extrusion device for bolt heads includes a base, on which three fixing seats are fixedly installed respectively. A guide rod assembly is fixedly connected between fixing seats one and fixing seats two, and a guide rod assembly is fixedly connected between fixing seats two and fixing seats three. A sliding seat is slidably installed on the guide rod assembly one, and a die replacement assembly is provided on the sliding seat. A top seat is slidably installed on the guide rod assembly two. A hydraulic cylinder one is fixedly installed in the middle of fixing seat one, and the piston rod end of the hydraulic cylinder one is connected to the sliding seat. A hydraulic cylinder two is fixedly installed on the top of fixing seat two, and a hydraulic cylinder three is fixedly installed on fixing seat three, with the piston rod end of the hydraulic cylinder three connected to the top seat. A die fixing assembly is provided in fixing seat two.

[0010] The mold fixing assembly includes an upper mold base and a lower mold base. A cavity is opened in the middle of the second fixing base. The lower mold base is installed in the second fixing base below the cavity. The piston rod of the second hydraulic cylinder passes through the second fixing base in the upper part of the cavity. The upper mold base is fixedly installed at the end of the piston rod of the second hydraulic cylinder. A guide seat is fixedly installed on one side of the second fixing base. A push rod is slidably installed in the guide seat. The end of the push rod is installed on the top seat.

[0011] The die head replacement assembly includes a transverse slide rail, which is fixedly mounted on a sliding seat. An extrusion die seat is slidably mounted in the transverse slide rail. Several extrusion dies are fixedly mounted on the extrusion die seat. Supports are provided on both sides of the extrusion die seat. A lead screw is rotatably mounted between two of the supports. A drive motor is provided on one side of the support. The lead screw is slidably engaged with the transverse slide rail.

[0012] The base has several support pads at its bottom.

[0013] The first and third fixing seats are disposed on both sides of the base, and the second fixing seat is disposed on the base between the first and third fixing seats.

[0014] Support rods are fixedly installed on the first and second fixed bases, and several position monitoring sensors are fixedly installed on the support rods.

[0015] Compared with the existing technology, the beneficial effects of this utility model are:

[0016] This invention enables the rapid installation, adjustment, and clamping of bolt rod processing parts via a die fixing assembly and a hydraulically driven top seat and top rod. A die switching assembly allows for the rapid switching of different extrusion dies, achieving the effects of quick installation, adjustment, stable clamping of bolt rods, and rapid die switching for processing bolt heads of different shapes and specifications. This significantly improves the production efficiency of cold extrusion processing of bolt heads, ensures stable processing results, and results in good product consistency. Attached Figure Description

[0017] Figure 1 This is a first-view structural schematic diagram of the present invention;

[0018] Figure 2 This is a schematic diagram of the second-view structure of this utility model;

[0019] Figure 3 This is a schematic diagram of the third-view structure of this utility model.

[0020] The following are the labels in the attached diagram: 1. Base; 2. Fixed base one; 3. Fixed base two; 4. Fixed base three; 5. Guide rod assembly one; 6. Guide rod assembly two; 7. Sliding seat; 8. Top seat; 10. Support pad; 20. Hydraulic cylinder one; 30. Hydraulic cylinder two; 31. Cavity; 32. Lower die base; 33. Upper die base; 34. Guide seat; 35. Push rod; 40. Hydraulic cylinder three; 60. Support rod; 61. Position monitoring sensor; 71. Transverse slide rail; 72. Extrusion die base; 73. Extrusion die head; 74. Bracket; 75. Lead screw; 76. Drive motor. Detailed Implementation

[0021] The present invention will be further described in conjunction with the accompanying drawings and specific embodiments. It should be understood that these embodiments are for illustrative purposes only and are not intended to limit the scope of the present invention. Furthermore, it should be understood that after reading the teachings of this invention, those skilled in the art can make various alterations or modifications to the present invention, and these equivalent forms also fall within the scope defined in this application.

[0022] Combined with appendix Figures 1-3 A bolt head cold extrusion device includes a base 1, on which a first fixed seat 2, a second fixed seat 3, and a third fixed seat 4 are fixedly installed. A guide rod assembly 5 is fixedly connected between the first fixed seat 2 and the second fixed seat 3, and a guide rod assembly 6 is fixedly connected between the second fixed seat 3 and the third fixed seat 4. A sliding seat 7 is slidably installed on the guide rod assembly 5, and a die head replacement assembly is provided on the sliding seat 7. A top seat 8 is slidably installed on the guide rod assembly 6. A hydraulic cylinder 20 is fixedly installed in the middle of the first fixed seat 2, and the piston rod end of the hydraulic cylinder 20 is connected to the sliding seat 7. A hydraulic cylinder 30 is fixedly installed on the top of the second fixed seat 3, and a hydraulic cylinder 40 is fixedly installed on the third fixed seat 4, with the piston rod end of the hydraulic cylinder 40 connected to the top seat 8. A die fixing assembly is provided in the second fixed seat 3. A receiving tray can be provided in the base 1 below the second fixed seat 3 near the first fixed seat 2 to receive the processed bolts.

[0023] The die fixing assembly includes an upper die base 33 and a lower die base 32. A cavity 31 is opened in the middle of the fixing base 32. The lower die base 32 is installed in the fixing base 32 below the cavity 31. The piston rod of the hydraulic cylinder 30 passes through the fixing base 32 above the cavity 31. The upper die base 33 is fixedly installed at the end of the piston rod of the hydraulic cylinder 30. A guide seat 34 is fixedly installed on one side of the fixing base 3. A push rod 35 is slidably installed in the guide seat 34. The end of the push rod 35 is installed on the top seat 8. The guide seat 34 is used to guide the push rod 35. The push rod 35 is used to push the bolt member laterally out from between the lower die base 32 and the upper die base 33 to facilitate extrusion processing.

[0024] The die head changing assembly includes a transverse slide rail 71, which is fixedly mounted on a sliding seat 7. An extrusion die holder 72 is slidably mounted in the transverse slide rail 71, and several extrusion dies 73 are fixedly mounted on the extrusion die holder 72. Supports 74 are provided on both sides of the extrusion die holder 72, and a lead screw 75 is rotatably mounted between two of the supports 74. A drive motor 76 is provided on one side of each support 74, and the lead screw 75 is slidably engaged with the transverse slide rail 71. The drive motor 76 drives the lead screw 75 to rotate, and the rotation of the lead screw 75, through its engagement with the transverse slide rail 71, drives the extrusion die holder 72 to move laterally, thereby enabling rapid adjustment of the extrusion dies 73. The die head changing assembly has a simple structure and is easy to use, significantly reducing production costs compared to setting up multiple sets of processing equipment.

[0025] The base 1 has several support pads 10 at its bottom.

[0026] The first fixing seat 2 and the third fixing seat 4 are disposed on both sides of the base 1, and the second fixing seat 3 is disposed on the base 1 between the first fixing seat 2 and the third fixing seat 4.

[0027] Support rods 60 are fixedly installed on the first fixed base 2 and the second fixed base 3, and several position monitoring sensors 61 are fixedly installed on the support rods 60. The position monitoring sensors 61 are used to monitor the position of the sliding seat 7, and the control console can obtain the position information of the sliding seat 7 in real time.

[0028] This device is also connected to a control console via wires. The control console can be placed in a suitable location next to this device. The control console has a microprocessor-based control device based on a single-chip microcomputer. The control console is equipped with a display screen and several control buttons, allowing operators to control the operation of this device through the control console.

[0029] When using this device, the length of the bolt blank is first measured and the result is input into the control console. The bolt blank to be processed is then placed into the lower die base 32. Pre-clamping is performed by operating the device through the control console, i.e., hydraulic cylinder 2 30 drives the upper die base 33 to move downward until it contacts the bolt blank but does not press it tightly. The extrusion length of the bolt blank is adjusted by controlling the device through the control console. Hydraulic cylinder 3 40 drives the top seat 8 to move laterally along the guide rod assembly 2 6. The top rod 35 pushes the bolt blank out from the side of the die fixing assembly near the die head switching assembly. Hydraulic cylinder 2 30 works again, driving the upper die base 33 further downward into the die. The seat 32 moves to press and fix the bolt rod. After the fixing is completed, the appropriate extrusion die is selected through the control panel and the extrusion process is started. The die switching component quickly switches to the selected extrusion die 73. The hydraulic cylinder 20 starts to work and drives the sliding seat 7 and the extrusion die 73 to move laterally to perform cold extrusion processing on the head of the bolt rod. After the processing is completed, the hydraulic cylinder 20 drives the sliding seat 7 to move so that the extrusion die 73 moves away from the fixed seat 3. The hydraulic cylinder 30 works to drive the upper die seat 33 to move upward to loosen the bolt. The hydraulic cylinder 40 works to drive the top seat 8 to move. The push rod 35 pushes the bolt rod out of the lower die seat 32 to complete the processing.

[0030] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A bolt head cold extrusion device, comprising a base (1), characterized in that: The base (1) is fixedly installed with a first fixed seat (2), a second fixed seat (3), and a third fixed seat (4). A guide rod assembly (5) is fixedly connected between the first fixed seat (2) and the second fixed seat (3). A guide rod assembly (6) is fixedly connected between the second fixed seat (3) and the third fixed seat (4). A sliding seat (7) is slidably installed on the first guide rod assembly (5). A mold head replacement assembly is provided on the sliding seat (7). A top seat (8) is slidably installed on the second guide rod assembly (6). A hydraulic cylinder (20) is fixedly installed in the middle of the first fixed seat (2). The piston rod end of the hydraulic cylinder (20) is connected to the sliding seat (7). A hydraulic cylinder (30) is fixedly installed on the top of the second fixed seat (3). A hydraulic cylinder (40) is fixedly installed on the third fixed seat (4). The piston rod end of the hydraulic cylinder (40) is connected to the top seat (8). A mold fixing assembly is provided in the second fixed seat (3).

2. The bolt head cold extrusion equipment according to claim 1, characterized in that: The mold fixing assembly includes an upper mold base (33) and a lower mold base (32). A cavity (31) is provided in the middle of the fixing base (3). The lower mold base (32) is installed in the fixing base (3) below the cavity (31). The piston rod of the hydraulic cylinder (30) passes through the fixing base (3) above the cavity (31). The upper mold base (33) is fixedly installed at the end of the piston rod of the hydraulic cylinder (30). A guide seat (34) is fixedly installed on one side of the fixing base (3). A push rod (35) is slidably installed in the guide seat (34). The end of the push rod (35) is installed on the top seat (8).

3. The bolt head cold extrusion equipment according to claim 1, characterized in that: The die head replacement assembly includes a transverse slide rail (71), which is fixedly mounted on a sliding seat (7). An extrusion die seat (72) is slidably mounted in the transverse slide rail (71). Several extrusion dies (73) are fixedly mounted on the extrusion die seat (72). Supports (74) are provided on both sides of the extrusion die seat (72). A lead screw (75) is rotatably mounted between two supports (74). A drive motor (76) is provided on one side of the support (74). The lead screw (75) is slidably engaged with the transverse slide rail (71).

4. The bolt head cold extrusion equipment according to claim 1, characterized in that: The base (1) has several support pads (10) at its bottom.

5. The bolt head cold extrusion equipment according to claim 1, characterized in that: The first fixing seat (2) and the third fixing seat (4) are arranged on both sides of the base (1), and the second fixing seat (3) is arranged on the base (1) between the first fixing seat (2) and the third fixing seat (4).

6. The bolt head cold extrusion equipment according to claim 1, characterized in that: Support rods (60) are fixedly installed on the first (2) and the second (3) of the fixed base, and several position monitoring sensors (61) are fixedly installed on the support rods (60).

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