Head forming die for long-rod inner hexagon screw

Abstract

The utility model discloses a long-rod inner hexagon screw head forming die which comprises an upper bottom plate, a lower bottom plate and a material returning cross beam, an upper die plate is arranged on the upper bottom plate, an upper die base is arranged on the upper die plate, and an upper punch is arranged on the upper die base. A lower die, a lower round die, a material ejecting punch and a tail punch are arranged on the lower bottom plate, the upper bottom plate is arranged on a pull rod seat, the pull rod seat, the lower bottom plate and the material returning cross beam are connected together through a pull rod, an air cylinder is arranged on the upper bottom plate, and a connecting rod of the air cylinder is connected with an upper die plate. Compared with the prior art, the head forming die for the long-rod socket head cap screw has the advantages that the head forming die for the long-rod socket head cap screw can be used for machining the socket head cap screw with the rod length smaller than or equal to 700 mm, and a product with the corresponding length can be produced only by replacing parts. The long-rod socket head cap screw head forming die is good in using effect, the size of a produced product is stable, and the long-rod socket head cap screw head forming die can be widely used in production of long-rod socket head cap screw head forming.

Description

Technical Field

[0001] This utility model relates to a molding die for forming the head of a long-rod internal hexagon screw. Background Technology

[0002] Socket head cap screws, also known as internal hex bolts, have an internal hex head and an external cylindrical head. They are common connecting components, and in some applications, screws with a shank length exceeding 200mm are used. The forming process for socket head cap screws with a shank length exceeding 200mm (as described in the process) is as follows: Figure 1 As shown, conventional equipment is limited by the maximum closed height and the distance of the mold opening, making it difficult to form the head. Therefore, a mold for forming the head of long-shaft internal hexagonal screws is needed. This utility model is a mold designed for forming the head of long-shaft internal hexagonal screws. Utility Model Content

[0003] In order to overcome the above-mentioned shortcomings of the prior art, this utility model proposes a long-rod internal hexagon screw head forming mold.

[0004] The technical solution adopted by this utility model to solve its technical problem is: a long rod internal hexagon screw head forming mold, including an upper base plate, a lower base plate and a material ejection beam. An upper template is set on the upper base plate, an upper mold base is set on the upper template, and an upper punch is set on the upper mold base; a lower mold, a lower circular mold, an ejector punch and a tail punch are set on the lower base plate. The upper base plate is set on a tie rod seat. The tie rod seat, the lower base plate and the material ejection beam are connected together by a tie rod. A cylinder is set on the upper base plate, and the connecting rod of the cylinder is connected to the upper template.

[0005] Furthermore, guide rails are installed on the upper base plate.

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

[0007] Furthermore, the upper punch is connected to the upper die holder via the upper die fixing sleeve.

[0008] Furthermore, the cylinder is fixed to the upper base plate by a cylinder seat.

[0009] Furthermore, a guide mold is set below the lower circular mold.

[0010] Furthermore, the lower mold, lower circular mold, and guide mold are fixed to the lower base plate by a pressure plate.

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

[0012] Furthermore, the unloading beam is fixed to the tie rod by a nut.

[0013] Compared with the prior art, the positive effects of this utility model are:

[0014] The long-rod internal hexagon screw head forming mold of this utility model can process internal hexagon screws with a rod length ≤700mm. Simply replace the mold to produce products of the corresponding length.

[0015] The long-shaft internal hexagon screw head forming mold of this utility model has good performance and produces products with stable dimensions. It can be widely used in the production of long-shaft internal hexagon screw heads. Attached Figure Description

[0016] This utility model will be described by way of example and with reference to the accompanying drawings, wherein:

[0017] Figure 1 This is a schematic diagram of the forming process for an internal hexagon screw with a shaft length exceeding 200mm;

[0018] Figure 2 This is a front view of the long-rod internal hexagon screw head forming mold of this utility model;

[0019] Figure 3 This is a cross-sectional view of the long-rod internal hexagon screw head forming mold of this utility model;

[0020] 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, tie rod 8, upper template 9, upper mold base 10, upper punch 11, upper mold fixing sleeve 12, lower mold 13, lower round mold 14, guide mold 15, ejector punch 16, tail punch 17, ejector beam 18, tie rod seat 19, and guide rail 20. Detailed Implementation

[0021] A mold for forming the head of a long-shank internal hexagonal screw, 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 mold base 10, upper punch 11, upper mold fixing sleeve 12, lower mold 13, lower circular mold 14, guide mold 15, ejector punch 16, tail punch 17, ejector beam 18, tie rod seat 19, and guide rail 20, wherein:

[0022] The upper punch 11 is connected to the upper die holder 10 via the upper die fixing sleeve 12. The upper die holder 10 is connected to the upper template 9 via screws. The upper template 9 is connected to the piston rod of the cylinder 1 via the connecting rod 4. The cylinder 1 is connected to the cylinder seat 2 via bolts. The cylinder seat 2 is fixed to the equipment slider via bolts. The upper template 9 can slide within the guide rail 20. The guide rail 20 is connected to the upper base plate 3 via bolts. At the front end of the guide rail 20 ( Figure 2A limiting block 5 is set at the left end (center) to limit the upper template 9. The upper base plate 3 is fixed to the equipment slider by bolts. The pull rod 8 is connected to the pull rod seat 19 by threads. The pull rod seat 19 is fixed to the equipment slider by bolts. The ejector beam 18 is fixed to the pull rod 8 by nuts. The tail punch 17 is placed on the ejector beam 18. The lower mold 13, lower circular mold 14, guide mold 15, and pressure plate 6 are connected to the lower base plate 7 by bolts. The lower base plate 7 is connected to the equipment worktable by bolts. During operation, the cylinder 1 is initially in the retracted state, placing the workpiece in the lower mold 13 and positioning it by the guide mold 15. When the cylinder 1 is activated, the cylinder 1 is ejected. The cylinder 1 drives the upper template 9, upper mold seat 10, and upper punch 11 to move through the connecting rod 4. The upper template 9 stops when it contacts the limiting block 5. The press switch is activated, the equipment slider moves downward, and the upper punch 11 squeezes the workpiece to form it in the lower mold 13. After forming, the slide block moves upward, driving the pull rod 8 and the ejector beam 18 to move upward together. After moving upward a certain distance, the ejector beam 18 contacts the tail punch 17, driving the ejector punch 16 to move upward and eject the workpiece. After the slide block 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, upper mold base 10, and upper punch 11 to move through the connecting rod 4. After the upper punch 11 moves, it empties the material picking position for easy material picking.

[0023] The method of using the long-rod internal hexagon screw head forming mold of this utility model is as follows:

[0024] 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 template 9 through screws. The upper template 9 is connected to the piston rod of the cylinder 1 through the connecting rod 4. The cylinder 1 is connected to the cylinder seat 2 through bolts. The cylinder seat 2 is fixed to the equipment slider through bolts.

[0025] Step 2: Install the upper template 9 inside the guide rail 20, and then connect the guide rail 20 to the upper base plate 3 with bolts. The upper base plate 3 is then fixed to the equipment slider with bolts.

[0026] Step 3: Connect the pull rod 8 to the pull rod seat 19 via threads, and fix the pull rod seat 19 to the equipment slider with bolts;

[0027] Step 4: The lower mold 13, lower circular mold 14, guide mold 15, and pressure plate 6 are connected to the lower base plate 7 by bolts. The lower base plate 7 is then connected to the equipment worktable by bolts.

[0028] Step 5: The unloading beam 18 is fixed together with the tie rod 8 by nuts, and the tail punch 17 is placed on the unloading beam 18;

[0029] Step 6: Before starting work, put cylinder 1 in the retracted state, then place the workpiece in the lower mold 13 and position it by the guide mold 15;

[0030] Step 7: Start the cylinder switch and the cylinder 1 is pushed out. The cylinder 1 drives the upper template 9, the upper mold base 10, and the upper punch 11 to move through the connecting rod 4. The upper template 9 stops when it moves to the front end and contacts the limit block 5.

[0031] Step 8: Turn on the press switch. The slide of the equipment moves downward, driving the upper punch 11 to move downward. Together with the ejector punch 16 and the tail punch 17, the upper punch 11 extrudes the workpiece and forms the workpiece in the lower die 13.

[0032] Step 9: After forming, the slide block of the equipment moves upward, driving the pull rod 8 and the ejector beam 18 to move upward together. After moving upward a certain distance, the ejector beam 18 contacts the tail punch 17, driving the ejector punch 16 to move upward and eject the workpiece.

[0033] Step 10: After the equipment slider returns to its original position, the displacement sensor transmits a signal to the cylinder 1 to return. The cylinder 1 drives the upper template 9, upper mold base 10, and upper punch 11 to move backward through the connecting rod 4. After the upper punch 11 moves, it vacates the material picking position for easy material picking.

[0034] The working principle of this utility model:

[0035] In this utility model, the upper punch can be moved back and forth by a cylinder. When picking up material, the upper punch is moved away to make room for picking up material. When forming, the upper punch is moved to the working position to form. It can process hexagonal screws with rod length ≤700mm.

Claims

1. A long-socket hex head forming die characterized by: It comprises an upper bottom plate, a lower bottom plate and a material returning beam, an upper die plate is arranged on the upper bottom plate, an upper die holder is arranged on the upper die plate, and an upper punch is arranged on the upper die holder; a lower die, a lower round die, a material lifting punch and a tail punch are arranged on the lower bottom plate, the upper bottom plate is arranged on a pull rod holder, the pull rod holder, the lower bottom plate and the material returning beam are connected together through pull rods, a gas cylinder is arranged on the upper bottom plate, and a connecting rod of the gas cylinder is connected with the upper die plate.

2. A long hex socket head screw head forming die according to claim 1, characterized in that: A guide rail is arranged on the upper bottom plate.

3. A long hex socket head screw head forming die according to claim 2, wherein: A limiting block is arranged at the front end of the guide rail.

4. The long hex socket head cap screw forming die of claim 1 wherein: The upper punch is connected together with the upper die holder through an upper die fixing sleeve.

5. The long hex socket head cap screw forming die of claim 1 wherein: The gas cylinder is fixed on the upper bottom plate through a gas cylinder holder.

6. A long hex socket head screw head forming die according to claim 1, wherein: A guide die is arranged below the lower round die.

7. A long hex socket head screw head forming die according to claim 6, wherein: The lower die, the lower round die and the guide die are fixed on the lower bottom plate through a pressing plate.

8. The long hex socket head cap screw forming die of claim 1 wherein: The pull rods are fixed together through thread connection with the pull rod holder.

9. The long hex socket head cap screw forming die of claim 1 wherein: The material returning beam is fixed together with the pull rods through nuts.

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