A long-rod high-strength screw head forming die and use method thereof

Abstract

The present invention discloses a long-rod high-strength screw head forming mold and a method of using the same. The forming mold includes an upper base plate, a lower base plate and a material-removing cross beam. An upper template is arranged on the upper base plate, an upper die seat is arranged on the upper template, and an upper punch is arranged on the upper die seat; a lower die, a lower circular die, a top punch and a tail punch are arranged on the lower base plate, the upper base plate is arranged on the tie rod seat, the tie rod seat, the lower base plate and the material-removing cross beam are connected together by a tie rod, a cylinder is arranged on the upper base plate, and the connecting rod of the cylinder is connected to the upper template. Compared with the prior art, the positive effect of the present invention is that the long-rod high-strength screw head forming mold of the present invention can process hexagon socket screws with a rod length of ≤700mm, and products of corresponding length can be produced by simply replacing parts. The long-rod high-strength screw head forming mold of the present invention has good use effect, and the product produced has stable size, and can be widely used in the production of long-rod high-strength screw head forming.

Description

Technical Field

[0001] The invention relates to a long-rod high-strength screw head forming die and a use method thereof. Background Art

[0002] Hexagon socket screws are also called hexagon socket bolts. They have an internal hexagon head and an external cylindrical head. Hexagon socket screws are common connecting components. In actual use, hexagon socket screws with a rod length of more than 200 mm are used in some scenarios. For hexagon socket screws with a rod length of more than 200 mm, the forming process (such as Figure 1 As shown in the figure, conventional equipment is limited by the maximum closed height and the mold opening distance and is difficult to form. Therefore, a mold for forming the head of a long-rod high-strength hexagon socket screw is needed. The present invention is a mold designed for forming the head of a long-rod high-strength hexagon socket screw. Summary of the invention

[0003] In order to overcome the above-mentioned shortcomings of the prior art, the present invention provides a long-rod high-strength screw head forming die and a use method thereof.

[0004] The technical solution adopted by the present invention to solve its technical problems is: a long-rod high-strength screw head forming mold, including an upper base plate, a lower base plate and a material return beam, an upper template is arranged on the upper base plate, an upper die seat is arranged on the upper template, and an upper punch is arranged on the upper die seat; a lower die, a lower circular die, a top punch and a tail punch are arranged on the lower base plate, the upper base plate is arranged on the pull rod seat, the pull rod seat, the lower base plate and the material return beam are connected together by a pull rod, a cylinder is arranged on the upper base plate, and the connecting rod of the cylinder is connected to the upper template.

[0005] Furthermore, a guide rail is arranged on the upper base plate.

[0006] Furthermore, a limit block is provided at the front end of the guide rail.

[0007] Furthermore, the upper punch is connected with the upper die base through an upper die fixing sleeve.

[0008] Furthermore, the cylinder is fixed on the upper base plate through a cylinder seat.

[0009] Furthermore, a guide die is arranged below the lower circular die.

[0010] Furthermore, the lower die, the lower circular die and the guide die are fixed on the lower base plate by a pressing plate.

[0011] Furthermore, the pull rod and the pull rod seat are fixed together through a threaded connection.

[0012] Furthermore, the material stripping crossbeam is fixed together with the pull rod through a nut.

[0013] The present invention also provides a method for using a long-rod high-strength screw head forming die, comprising the following steps:

[0014] Step 1: Install the upper punch on the upper template, connect the upper template with the piston rod of the cylinder through a connecting rod, connect the cylinder with the cylinder seat through bolts, and fix the cylinder seat on the equipment slide;

[0015] Step 2: Install the upper template in the guide rail, then connect the guide rail to the upper base plate through bolts, and then fix the upper base plate to the equipment slider through bolts;

[0016] Step 3: Connect the tie rod to the tie rod seat through threads, and fix the tie rod seat to the equipment slider through bolts;

[0017] Step 4: Set the top punch and tail punch on the lower bottom plate, then fix the lower die, lower round die and guide die on the lower bottom plate through the pressing plate, and connect the lower bottom plate to the equipment workbench through bolts;

[0018] Step 5: Fix the material return beam and the pull rod together through nuts;

[0019] Step 6: When starting to work, make the cylinder in a retracted state, the upper mold plate is located at the rear end of the guide rail, and then place the workpiece in the lower mold and position it through the guide mold;

[0020] Step 7: Start the cylinder switch and push the cylinder out, driving the upper template and the upper punch forward through the connecting rod until the upper template contacts the limit block and stops;

[0021] Step 8: Start the press switch, the equipment slide moves downward, driving the upper punch to move downward, and cooperate with the top punch and the tail punch to extrude the workpiece so that the workpiece is formed in the lower die;

[0022] Step 9. After forming, the equipment slider moves upward, driving the pull rod and the material return beam upward together, until the material return beam contacts the tail punch and drives the ejection punch upward to eject the workpiece;

[0023] Step 10: After the equipment slider returns to its position, the displacement sensor transmits a signal to drive the cylinder to return. The cylinder drives the upper template and the upper punch to move backward through the connecting rod, and then takes the workpiece out from the vacated material removal position.

[0024] Compared with the prior art, the present invention has the following positive effects:

[0025] The long-rod high-strength screw head forming die of the present invention can process hexagon socket screws with a rod length of ≤700 mm, and products of corresponding length can be produced by simply replacing the die.

[0026] The long-rod high-strength screw head forming die of the invention has good use effect, produces products with stable dimensions, and can be widely used in the production of long-rod hexagon socket screw head forming. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The present invention will now be described by way of example with reference to the accompanying drawings, in which:

[0028] Figure 1 It is a schematic diagram of the forming process of hexagon socket screws with a rod length exceeding 200 mm;

[0029] Figure 2 It is a front view of the long-rod high-strength screw head forming die of the present invention;

[0030] Figure 3 is a cross-sectional view of a long-rod high-strength screw head forming die of the present invention;

[0031] The reference numerals in the figure include: cylinder 1, cylinder seat 2, upper base plate 3, connecting rod 4, limit block 5, pressure plate 6, lower base plate 7, pull rod 8, upper template 9, upper die seat 10, upper punch 11, upper die fixing sleeve 12, lower die 13, lower circular die 14, guide die 15, top punch 16, tail punch 17, return beam 18, pull rod seat 19, guide rail 20. DETAILED DESCRIPTION

[0032] A long-rod high-strength screw head forming die, such as Figure 2 and Figure 3 As shown, it includes: cylinder 1, cylinder seat 2, upper base plate 3, connecting rod 4, limit block 5, pressure plate 6, lower base plate 7, tie rod 8, upper template 9, upper die seat 10, upper punch 11, upper die fixing sleeve 12, lower die 13, lower round die 14, guide die 15, top punch 16, tail punch 17, material return beam 18, tie rod seat 19, guide rail 20, wherein:

[0033] The upper punch 11 is connected to the upper die base 10 through the upper die fixing sleeve 12, the upper die base 10 is connected to the upper die plate 9 through screws, the upper die plate 9 is connected to the piston rod of the cylinder 1 through the connecting rod 4, the cylinder 1 is connected to the cylinder base 2 through bolts, the cylinder base 2 is fixed to the equipment slide block through bolts, the upper die plate 9 can slide in the guide rail 20, the guide rail 20 is connected to the upper base plate 3 through bolts, and at the front end of the guide rail 20 ( Figure 2The upper mold plate 9 is fixed with a limit block 5, the upper bottom plate 3 is fixed with the equipment slider by bolts, the tie rod 8 is connected with the tie rod seat 19 by threads, the tie rod seat 19 is fixed with the equipment slider by bolts, the material withdrawal beam 18 is fixed with the tie rod 8 by nuts, the tail punch 17 is placed on the material withdrawal beam 18, the lower mold 13, the lower round mold 14, the guide mold 15, the pressing plate 6 are connected with the lower bottom plate 7 by bolts, and the lower bottom plate 7 is connected with the equipment workbench by bolts. When working, the initial state of the cylinder 1 is the contracted state, and the workpiece is placed in the lower mold 13 and positioned by the guide mold 15. Start the cylinder 1 switch to push the cylinder 1 out, and the cylinder 1 drives the upper mold plate 9, the upper mold seat 10, and the upper punch 11 to move through the connecting rod 4. The upper mold plate 9 stops when it contacts the limit block 5, and the press switch is started. The equipment slider moves downward, and the upper punch 11 squeezes the workpiece to form the workpiece in the lower mold 13. After forming, the equipment slider moves upward, driving the pull rod 8 and the material return beam 18 upward together. After moving up a certain distance, the material return beam 18 contacts the tail punch 17 and drives the ejection punch 16 upward to eject the workpiece. After the slider returns to the position, the displacement sensor transmits a signal to link the cylinder 1 to return. The cylinder 1 drives the upper template 9 and the upper die base 10 and the upper punch 11 to move through the connecting rod 4. After the upper punch 11 moves, the material removal position is vacated for easy material removal.

[0034] The method of using the long-rod high-strength screw head forming die of the present invention is as follows:

[0035] Step 1, the upper punch 11 is connected to the upper die base 10 through the upper die fixing sleeve 12, the upper die base 10 is connected to the upper die plate 9 through screws, the upper die plate 9 is connected to the piston rod of the cylinder 1 through the connecting rod 4, the cylinder 1 is connected to the cylinder base 2 through bolts, and the cylinder base 2 is fixed to the equipment slide block through bolts;

[0036] Step 2: Install the upper template 9 in the guide rail 20, and then connect the guide rail 20 to the upper base plate 3 through bolts, and fix the upper base plate 3 to the equipment slider through bolts;

[0037] Step 3: Connect the tie rod 8 to the tie rod seat 19 through threads, and fix the tie rod seat 19 to the device slider through bolts;

[0038] Step 4: The lower die 13, the lower round die 14, the guide die 15, the pressing plate 6 are connected to the lower bottom plate 7 by bolts, and the lower bottom plate 7 is connected to the equipment workbench by bolts;

[0039] Step 5: The material-returning beam 18 is fixed to the pull rod 8 by a nut, and the tail punch 17 is placed on the material-returning beam 18;

[0040] Step 6: Before starting work, the cylinder 1 is in a retracted state, and then the workpiece is placed in the lower die 13 and positioned by the guide die 15;

[0041] Step 7: Start the cylinder switch and push the cylinder 1 out. The cylinder 1 drives the upper mold plate 9, the upper mold base 10 and the upper punch 11 to move through the connecting rod 4. The upper mold plate 9 moves to the front end and stops when it contacts the limit block 5.

[0042] Step 8: Start the press switch, the equipment slide moves downward, driving the upper punch 11 to move downward, and cooperate with the top punch 16 and the tail punch 17 to extrude the workpiece so that the workpiece is formed in the lower die 13;

[0043] Step 9: After forming, the equipment slide moves upward, driving the pull rod 8 and the material return beam 18 upward together. After moving upward for a distance, the material return beam 18 contacts the tail punch 17 and drives the ejection punch 16 upward to eject the workpiece;

[0044] Step 10: After the equipment slider returns to its position, the displacement sensor transmits a signal to link the cylinder 1 to return. The cylinder 1 drives the upper mold plate 9, the upper mold base 10, and the upper punch 11 to move backward through the connecting rod 4. After the upper punch 11 moves, the material removal position is vacated for easy material removal.

[0045] Working principle of the present invention:

[0046] In the present invention, the upper punch part can be driven by the cylinder to move forward and backward. When taking materials from the upper part, the upper punch part is moved away to free up the material taking space. When forming, the upper punch is moved to the working position for forming. The hexagon socket screws with a rod length of ≤700mm can be processed.

Claims

1. A long-rod high-strength screw head forming die, characterized in that: It includes an upper base plate, a lower base plate and a material-returning crossbeam. An upper template is arranged on the upper base plate, an upper die seat is arranged on the upper template, and an upper punch is arranged on the upper die seat; a lower die, a lower round die, a top punch and a tail punch are arranged on the lower base plate, the upper base plate is arranged on a tie rod seat, the tie rod seat, the lower base plate and the material-returning crossbeam are connected together by a tie rod, a cylinder is arranged on the upper base plate, and the connecting rod of the cylinder is connected to the upper template.

2. The long-rod high-strength screw head forming die according to claim 1, characterized in that: A guide rail is arranged on the upper base plate.

3. The long-rod high-strength screw head forming die according to claim 2, characterized in that: A limit block is provided at the front end of the guide rail.

4. The long-rod high-strength screw head forming die according to claim 1, characterized in that: The upper punch is connected with the upper die base through an upper die fixing sleeve.

5. The long-rod high-strength screw head forming die according to claim 1, characterized in that: The cylinder is fixed on the upper base plate through a cylinder seat.

6. The long-rod high-strength screw head forming die according to claim 1, characterized in that: A guide die is arranged below the lower circular die.

7. The long-rod high-strength screw head forming die according to claim 6, characterized in that: The lower die, the lower round die and the guide die are fixed on the lower base plate by a pressing plate.

8. The long-rod high-strength screw head forming die according to claim 1, characterized in that: The pull rod and the pull rod seat are fixed together through threaded connection.

9. The long-rod high-strength screw head forming die according to claim 1, characterized in that: The material-removing crossbeam is fixed together with the pull rod through a nut.

10. A method for using a long-rod high-strength screw head forming die, characterized in that: The steps include: Step 1: Install the upper punch on the upper template, connect the upper template with the piston rod of the cylinder through a connecting rod, connect the cylinder with the cylinder seat through bolts, and fix the cylinder seat on the equipment slide; Step 2: Install the upper template in the guide rail, then connect the guide rail to the upper base plate through bolts, and then fix the upper base plate to the equipment slider through bolts; Step 3: Connect the tie rod to the tie rod seat through threads, and fix the tie rod seat to the equipment slider through bolts; Step 4: Set the top punch and tail punch on the lower bottom plate, then fix the lower die, lower round die and guide die on the lower bottom plate through the pressing plate, and connect the lower bottom plate to the equipment workbench through bolts; Step 5: Fix the material return beam and the pull rod together through nuts; Step 6: When starting to work, make the cylinder in a retracted state, the upper mold plate is located at the rear end of the guide rail, and then place the workpiece in the lower mold and position it through the guide mold; Step 7: Start the cylinder switch and push the cylinder out, driving the upper template and the upper punch forward through the connecting rod until the upper template contacts the limit block and stops; Step 8: Start the press switch, the equipment slide moves downward, driving the upper punch to move downward, and cooperate with the top punch and the tail punch to extrude the workpiece so that the workpiece is formed in the lower die; Step 9. After forming, the equipment slider moves upward, driving the pull rod and the material return beam upward together, until the material return beam contacts the tail punch and drives the ejection punch upward to eject the workpiece; Step 10: After the equipment slider returns to its position, the displacement sensor transmits a signal to drive the cylinder to return. The cylinder drives the upper template and the upper punch to move backward through the connecting rod, and then takes the workpiece out from the vacated material removal position.

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