A cold forging forming device for high-strength special-shaped bolts

Abstract

The application relates to the field of bolt processing, in particular to a cold forging forming device for high-strength special-shaped bolts. The cold forging forming device for high-strength special-shaped bolts comprises two dismounting seats arranged in an up-down mode, a door-shaped frame two is fixed on the faraway surface of each dismounting seat, two guide rods two are slidably connected to the door-shaped frame two, a vertical pressing block is fixed on the two guide rods two, the vertical pressing block is vertically slidably connected to the dismounting seat, an extension rod two is fixed on the door-shaped frame two, the movable end of the extension rod two is fixed on the vertical pressing block, and the vertical pressing block is butterfly-shaped. A door-shaped frame one is fixed on the vertical side surface of the dismounting seat, two guide rods one are slidably connected to the door-shaped frame one, a horizontal pressing block is fixed on the two guide rods one, a sharp head is arranged in the middle of the horizontal pressing block, the sharp head is in abutment with the vertical pressing block, an extension rod one is fixed on the door-shaped frame one, the movable end of the extension rod one is fixed on the horizontal pressing block, and a semicylindrical groove is arranged on the seat block. The device can process butterfly-shaped bolt heads.

Description

Technical Field

[0001] This invention relates to the field of bolt processing, and more specifically to a cold forging device for high-strength irregular-shaped bolts. Background Technology

[0002] In numerous fields such as machinery manufacturing and construction engineering, bolts, as crucial connecting components, play a vital role in the stability and reliability of the overall system due to their diverse performance and structural variations. With the continuous development of industrial technology, the requirements for bolts are becoming increasingly diversified. High-strength, irregularly shaped bolts, due to their unique structural and performance advantages, are finding wider application in high-end equipment manufacturing and other fields. Traditional cold forging technology for bolts mainly processes bolt heads of conventional shapes. For complex shapes like butterfly bolt heads, it is difficult to precisely control the forming process. Especially in terms of thickness adjustment, it is impossible to flexibly adjust the thickness of butterfly bolt heads according to actual needs. This results in the inability to meet the diverse thickness requirements of butterfly bolt heads in different application scenarios in actual production. For example, some special equipment may require thinner bolt heads to accommodate confined installation spaces, while other scenarios requiring higher strength connections require thicker bolt heads to ensure connection reliability. Summary of the Invention

[0003] To overcome the shortcomings of the prior art, the present invention provides a cold forging forming device for high-strength irregular bolts, the beneficial effect of which is that it can process bolts with butterfly-shaped spiral heads, and the thickness of the butterfly-shaped spiral head is adjustable.

[0004] A cold forging device for high-strength irregular bolts includes a disassembly seat, with two disassembly seats arranged vertically. A portal frame II is fixed on the far side of each of the two disassembly seats. Two guide rods II are slidably connected to the portal frame II. A vertical pressure block is fixed on the two guide rods II. The vertical pressure block is vertically slidably connected to the disassembly seat. A telescopic rod II is fixed on the portal frame II. The movable end of the telescopic rod II is fixed on the vertical pressure block. The vertical pressure block is butterfly-shaped.

[0005] A portal frame is fixed to the vertical side of the disassembly seat. Two guide rods are slidably connected to the portal frame. A horizontal pressure block is fixed to the two guide rods. A pointed tip is provided in the middle of the horizontal pressure block. The pointed tip fits against the vertical pressure block. A telescopic rod is fixed to the portal frame. The movable end of the telescopic rod is fixed to the horizontal pressure block. A semi-cylindrical groove is provided on the seat block.

[0006] Each disassembly seat has a connecting rod fixed on both the front and rear sides, a seat block is provided on the right side of each disassembly seat, and a fixing sleeve is fixed on both the front and rear sides of each seat block. The two connecting rods on the disassembly seat are respectively inserted into the two fixing sleeves, and each fixing sleeve is connected to a fastening screw by thread, with the fastening screw pressing on the connecting rod.

[0007] Multiple semi-cylinders, arranged from largest to smallest, are stacked in the semi-cylindrical groove on the seat block. Attached Figure Description

[0008] The present invention will now be described in further detail with reference to the accompanying drawings and specific implementation methods.

[0009] Figure 1 A schematic diagram of the structure of a cold forging forming device for high-strength irregular-shaped bolts. Figure 1 ;

[0010] Figure 2 A schematic diagram of the structure of a cold forging forming device for high-strength irregular-shaped bolts. Figure 2 ;

[0011] Figure 3 A schematic diagram of the structure of a cold forging forming device for high-strength irregular-shaped bolts. Figure 3 ;

[0012] Figure 4 This is a schematic diagram of the structure of the base block and the cylinder;

[0013] Figure 5 This is a schematic diagram of the seat block structure;

[0014] Figure 6 Schematic diagram of the disassembly base Figure 1 ;

[0015] Figure 7 Schematic diagram of the disassembly base Figure 2 ;

[0016] Figure 8 Schematic diagram of the base structure Figure 1 ;

[0017] Figure 9 Schematic diagram of the base structure Figure 2 ;

[0018] In the figure: seat block 101; semi-cylinder 102; fastening screw 103; fixing sleeve 104; hook 105; rotating rod 106; circular piece 107; fixing shaft 108; boss 109;

[0019] 201 cylinder; 202 fixed base; 203 portal frame; 204 screw rod;

[0020] Disassembly base 301; Telescopic rod one 302; Guide rod one 303; Portal frame one 304; Horizontal pressure block 305; Pointed head 306; Vertical pressure block 307; Hook groove 308; Portal frame two 309; Insert post 310; Telescopic rod two 311; Guide rod two 312; Connecting rod 313;

[0021] Base 401; Vertical rod 402; Top seat 403; Electromagnetic block 404; Extension rod 405; Bracket 406; Telescopic rod three 407; Track 408; Telescopic rod four 409. Detailed Implementation

[0022] like Figure 6-7 As shown;

[0023] The cold forging device for high-strength irregular bolts includes a disassembly seat 301. Two disassembly seats 301 are arranged vertically. A portal frame 309 is fixed on the far side of each of the two disassembly seats 301. Two guide rods 312 are slidably connected to the portal frame 309. A vertical pressure block 307 is fixed on the two guide rods 312. The vertical pressure block 307 is vertically slidably connected to the disassembly seat 301. A telescopic rod 311 is fixed on the portal frame 309. The movable end of the telescopic rod 311 is fixed on the vertical pressure block 307. The vertical pressure block 307 is butterfly-shaped. One end of the cylindrical metal bar is placed between two disassembly seats 301. The disassembly seats 301 are provided with butterfly-shaped grooves corresponding to the shape of the vertical pressure blocks 307. One end of the cylindrical metal bar is also located between the two vertical pressure blocks 307. The extension rod 311 extends to drive the vertical pressure blocks 307 and the two corresponding extension rods 311 to slide relative to the portal frame 309, thereby causing the two vertical pressure blocks 307 to move closer to each other and press the two vertical pressure blocks 307 against one end of the metal bar, cold forging and extending the one end of the metal bar, so that the metal bar extends in the butterfly-shaped groove, thereby turning one end of the metal bar into a butterfly-shaped spiral head. The butterfly-shaped special bolt can be easily rotated manually. The thickness of the butterfly-shaped spiral head can be adjusted by adjusting the force of the two vertical pressure blocks 307 pressing on the metal bar.

[0024] like Figure 4-7 As shown;

[0025] Because a portal frame 304 is fixed to the vertical side of the disassembly base 301, two guide rods 303 are slidably connected to the portal frame 304, and a horizontal pressure block 305 is fixed to the two guide rods 303. A pointed tip 306 is provided in the middle of the horizontal pressure block 305, and the pointed tip 306 fits against the vertical pressure block 307. A telescopic rod 302 is fixed to the portal frame 304, and the movable end of the telescopic rod 302 is fixed to the horizontal pressure block 305. A semi-cylindrical groove is provided on the base block 101. When the telescopic rod 302 extends or retracts, it can drive the horizontal pressure block 305 and the two guide rods 303 to slide relative to the portal frame 304. This allows the horizontal pressure block 305 to press against the butterfly-shaped spiral head that has been flattened by the two vertical pressure blocks 307 through the pointed tip 306. By pressing the center of the butterfly-shaped spiral head through the pointed tip 306, the center of the butterfly-shaped spiral head is further pressed out of concavity, making the butterfly-shaped spiral head more beautiful and more like a butterfly shape.

[0026] Furthermore, the pointed head 306 is designed as an independent plug-in, which is connected to the main body of the horizontal pressure block 305 through a dovetail groove, and can be quickly replaced with different shapes such as spherical head and conical head.

[0027] When replacing with a spherical head, an arc-shaped groove can be pressed out to meet the aesthetic requirements of decorative bolts;

[0028] When replacing with a toothed head, anti-slip teeth can be pressed into the middle of the head to increase friction when manually turning.

[0029] like Figure 4-7 As shown;

[0030] Since each disassembly seat 301 has a connecting rod 313 fixed on both its front and rear sides, and a seat block 101 is provided on the right side of each disassembly seat 301, and a fixing sleeve 104 is fixed on both its front and rear sides, the two connecting rods 313 on the disassembly seat 301 are respectively inserted into the two fixing sleeves 104. Each fixing sleeve 104 is connected to a fastening screw 103 by a thread, and the fastening screw 103 presses on the connecting rod 313. By inserting the connecting rod 313 on the disassembly seat 301 into the fixing sleeve 104 on the seat block 101, the disassembly is thus completed. The seat 301 and the seat block 101 are connected together. The connecting rod 313 is fastened to the fixing sleeve 104 by the fastening screw 103 pressing it on the connecting rod 313, preventing the connecting rod 313 from falling off the fixing sleeve 104. The two seat blocks 101 and the two disassembly seats 301 can move closer and further away from each other synchronously. After the two seat blocks 101 move closer, the metal bar is cold-forged and trimmed, so that the metal bar becomes a standard cylindrical shape. Then, the two vertical pressure blocks 307 move closer to each other, so that the two vertical pressure blocks 307 press the end of the metal bar into a butterfly shape.

[0031] Furthermore, an electromagnetic lock is installed on the outside of the fixed sleeve 104. When cold forging, an electromagnetic force (attraction force ≥1000N) is generated by energizing the connecting rod and the fixed sleeve.

[0032] The electromagnetic lock is linked to the telescopic rod 409 and is activated only during the cold forging pressurization stage. It is released when the power is cut off during mold removal and does not affect normal disassembly.

[0033] like Figure 4-5 As shown;

[0034] Because multiple semi-cylindrical cylinders 102 are stacked in descending order of size in the semi-cylindrical groove on the seat block 101, the number of stacked semi-cylindrical cylinders 102 can be adjusted to change the diameter of the cylindrical groove formed by the two semi-cylindrical grooves, so that the size of the semi-cylindrical groove matches the size of the metal bar, allowing for cold forging of metal bars of different diameters.

[0035] like Figure 4-5 As shown;

[0036] Because a fixed seat 202 is fixed on the right side of the seat block 101, a fixed seat 202 is vertically slidably connected to the fixed seat 202, and a gate-shaped component 203 is slidably connected to the fixed seat 202. Two cylinders 201 are fixed on the gate-shaped component 203, and the two cylinders 201 press on the innermost semi-cylinder 102. A screw 204 is threadedly connected to the gate-shaped component 203, and the screw 204 presses against the fixed seat 202. Rotating the screw 204 can press against the fixed seat 202, thereby causing the gate-shaped component 203 to slide relative to the fixed seat 202, so that the two cylinders 201 press against the multiple semi-cylinders 102 in the semi-cylinder groove, thereby fastening the multiple semi-cylinders 102 in the semi-cylinder groove and preventing the multiple semi-cylinders 102 from falling out of the semi-cylinder groove, so that the size of the different numbers of semi-cylinder grooves matches the size of the metal bar.

[0037] Furthermore, a toothed semi-cylindrical tube:

[0038] The inner surface is machined with annular teeth (tooth pitch 1mm, tooth depth 0.3mm). When cold forging bolt shanks that require anti-slip texture, the teeth can be pressed out simultaneously, reducing the need for subsequent knurling processes.

[0039] Toothed molds can be quickly customized through electrical discharge machining to meet different anti-slip level requirements, such as coarse teeth for car tire bolts and fine teeth for electronic device bolts.

[0040] like Figure 4-7 As shown;

[0041] Since the portal frame 309 is fixed with a pin 310 and the seat block 101 is fixed with a boss 109, the pin 310 is inserted into the boss 109. When the disassembly seat 301 and the seat block 101 are connected by the connecting rod 313 and the fixing sleeve 104, the pin 310 will also be inserted into the boss 109. This makes the disassembly seat 301 and the seat block 101 connected by the pin 310 and the boss 109, making the connection between the disassembly seat 301 and the seat block 101 more stable, so that the two disassembly seats 301 and the two seat blocks 101 can move synchronously when cold forging screws.

[0042] Furthermore, since the disassembly seat 301 can be disassembled from the seat block 101, different types of disassembly seats 301 can be replaced. The dimensions of the horizontal pressure block 305 and the vertical pressure block 307 inside the disassembly seat 301 can be increased or decreased, thereby cold forging butterfly-shaped spiral heads of different sizes.

[0043] like Figure 4-7 As shown;

[0044] Because the connecting rod 313 is provided with a hook groove 308, and the seat block 101 is fixed with a fixed shaft 108, one end of the rotating rod 106 is fitted into the fixed shaft 108 with a clearance fit, and the other end of the rotating rod 106 is fixed with a hook part 105, which is inserted into the hook groove 308. The rotating rod 106 can slide axially on the fixed shaft 108, and the rotating rod 106 can rotate about the fixed shaft 108. Therefore, when the connecting rod 313 is inserted into the fixed sleeve 104, the rotating rod 106 can be slid outward and then rotated so that the hook part 105 on the rotating rod 106 is aligned with the hook groove 308, so that the hook part 105 is inserted into the hook groove 308. Then, the connecting rod 313 is pulled by the rotating rod 106 to prevent the connecting rod 313 from moving to the left and disengaging from the fixed sleeve 104. This makes the connection between the disassembly seat 301 and the seat block 101 more stable and the precision is higher when cold forging metal bars.

[0045] Furthermore, the groove 308 is designed with a T-shaped cross section, and the hook part 105 corresponds to a T-shaped boss. After insertion, it forms a four-sided enclosure, which improves the axial load-bearing capacity.

[0046] Furthermore, anti-slip serrations are machined on the contact surface between the hook and the groove to prevent slippage.

[0047] like Figure 4-5 As shown;

[0048] Since a circular piece 107 is fixed on the fixed shaft 108, and a compression spring is sleeved on the fixed shaft 108, the compression spring is located between the rotating rod 106 and the circular piece 107. The circular piece 107 can prevent the compression spring from detaching from the fixed shaft 108. By pressing the rotating rod 106 with the compression spring, the rotating rod 106 always tends to move closer to the seat block 101, which makes it difficult for the hook 105 to slip out after being inserted into the hook groove 308, thus ensuring the stability of the rotating rod 106 when pulling the connecting rod 313.

[0049] like Figure 1-9 As shown;

[0050] The cold forging device for high-strength irregular bolts also includes a base 401. Four vertical rods 402 are fixed on the upper side of the base 401. A top seat 403 is fixed on the upper part of the four vertical rods 402. Two seat blocks 101 are vertically slidably connected to the four vertical rods 402. Telescopic rods 409 are fixed on both the seat blocks 101 and the top seat 403. The ends of the two telescopic rods 409 are respectively fixed to the outside of the two seat blocks 101. When the two telescopic rods 409 extend and retract, they can drive the two seat blocks 101 to move closer or further away from each other, thereby driving the two disassembly seats 301 to move closer or further away from each other, which facilitates the cold forging of metal bars.

[0051] like Figure 8-9 As shown;

[0052] Because a track 408 is provided on the base 401, and a bracket 406 is slidably connected to the track 408, a telescopic rod 407 is fixed on the base 401, and the end of the telescopic rod 407 is fixed to the bracket 406. An extension rod 405 is fixed to the upper part of the bracket 406, and an electromagnetic block 404 is fixed to the left end of the extension rod 405. The electromagnetic block 404 is located between two semi-cylindrical slots. When the electromagnetic block 404 is energized, it becomes magnetic, which can attract the right end of the metal rod to the electromagnetic block 404, thereby suspending and fixing the metal rod. The two seat blocks 101 and the two disassembly seats 301 are driven to move closer to each other to cold forge the metal bar. When pressing the butterfly-shaped spindle, if the butterfly-shaped spindle does not fill the butterfly groove, the support 406 can be driven to move to the left on the track 408, so that the extension rod 405 and the electromagnetic block 404 move to the left, thereby allowing more length of metal bar to enter between the two vertical pressure blocks 307, continuing to press the end of the metal bar, so that the end of the metal bar extends, and the pressed butterfly-shaped spindle fills the butterfly groove.

Claims

1. A cold forging forming device for high-strength irregular-shaped bolts, comprising a disassembly seat (301), characterized in that: Two disassembly seats (301) are arranged vertically. A portal frame (309) is fixed on the far side of each disassembly seat (301). Two guide rods (312) are slidably connected to the portal frame (309). A vertical pressure block (307) is fixed on the two guide rods (312). The vertical pressure block (307) is vertically slidably connected to the disassembly seat (301). A telescopic rod (311) is fixed on the portal frame (309). The movable end of the telescopic rod (311) is fixed on the vertical pressure block (307). The vertical pressure block (307) is butterfly-shaped. The vertical side of the disassembly seat (301) is fixed with a portal frame (304), and two guide rods (303) are slidably connected on the portal frame (304). A horizontal pressure block (305) is fixed on the two guide rods (303). A pointed head (306) is provided in the middle of the horizontal pressure block (305). The pointed head (306) is in contact with the vertical pressure block (307). A telescopic rod (302) is fixed on the portal frame (304). The movable end of the telescopic rod (302) is fixed on the horizontal pressure block (305). A semi-cylindrical groove is provided on the seat block (101). Each of the disassembly seats (301) has a connecting rod (313) fixed on both the front and rear sides. Each disassembly seat (301) has a seat block (101) on its right side. Each seat block (101) has a fixing sleeve (104) fixed on both the front and rear sides. The two connecting rods (313) on the disassembly seat (301) are respectively inserted into the two fixing sleeves (104). Each fixing sleeve (104) is connected to a fastening screw (103) by a thread. The fastening screw (103) presses on the connecting rod (313).

2. The cold forging forming device for high-strength irregular-shaped bolts according to claim 1, characterized in that: Multiple semi-cylindrical cylinders (102) are stacked in descending order of size in the semi-cylindrical groove on the seat block (101).

3. The cold forging forming device for high-strength irregular-shaped bolts according to claim 2, characterized in that: A fixed seat (202) is fixed on the right side of the seat block (101). The fixed seat (202) is vertically slidably connected to the fixed seat (202). A gate-shaped component (203) is slidably connected to the fixed seat (202). Two cylinders (201) are fixed on the gate-shaped component (203). The two cylinders (201) press on the innermost semi-cylinder (102). A screw (204) is threadedly connected to the gate-shaped component (203). The screw (204) presses against the fixed seat (202).

4. The cold forging forming device for high-strength irregular-shaped bolts according to claim 3, characterized in that: A pin (310) is fixed on the second gantry frame (309), and a boss (109) is fixed on the seat block (101). The pin (310) is inserted into the boss (109).

5. The cold forging forming device for high-strength irregular-shaped bolts according to claim 4, characterized in that: The connecting rod (313) is provided with a hook groove (308), the seat block (101) is fixed with a fixed shaft (108), one end of the rotating rod (106) is inserted into the fixed shaft (108) with a clearance fit, and the other end of the rotating rod (106) is fixed with a hook (105), which is inserted into the hook groove (308).

6. The cold forging forming device for high-strength irregular-shaped bolts according to claim 5, characterized in that: A circular piece (107) is fixed on the fixed shaft (108), and a compression spring is sleeved on the fixed shaft (108). The compression spring is located between the rotating rod (106) and the circular piece (107).

7. The cold forging forming device for high-strength irregular-shaped bolts according to claim 6, characterized in that: It also includes a base (401), four vertical rods (402) are fixed on the upper side of the base (401), and a top seat (403) is fixed on the upper part of the four vertical rods (402). Two seat blocks (101) are vertically slidably connected to the four vertical rods (402). Telescopic rods (409) are fixed on both the seat blocks (101) and the top seat (403). The ends of the two telescopic rods (409) are respectively fixed on the outside of the two seat blocks (101).

8. The cold forging forming device for high-strength irregular-shaped bolts according to claim 7, characterized in that: The base (401) is provided with a track (408), and a bracket (406) is slidably connected on the track (408). A telescopic rod (407) is fixed on the base (401), and the end of the telescopic rod (407) is fixed on the bracket (406). An extension rod (405) is fixed on the upper part of the bracket (406), and an electromagnetic block (404) is fixed on the left end of the extension rod (405). The electromagnetic block (404) is located between two semi-cylindrical slots.

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