Precise bolt mold forming and pressing tool

Abstract

The utility model provides a precision bolt mold forming and pressing tool, which relates to the technical field of bolt production and processing, and comprises a rack, a press machine arranged above the rack, a connecting plate arranged below the press machine, a support plate fixedly connected to the lower surface of the connecting plate, an upper mold arranged on the lower surface of the support plate, and a connecting shaft fixedly connected to the lower surface of the press machine, a first clamping groove is formed in the upper surface of the rack, a lower die is arranged in the first clamping groove, and a connecting block is fixedly connected to the lower surface of the lower die. When forming and pressing are carried out, raw materials are firstly subjected to pretreatment work such as cutting and heat treatment, after pretreatment is completed, cut round bars are placed in the lower die, and at the moment, an air cylinder is started to drive a press machine to punch downwards; and the upper die arranged below the press machine is used for forming the round bars, the round bars are taken out after forming is completed, overall forming and pressing treatment is completed, and then the round bars with different thicknesses are fixed.

Description

Technical Field

[0001] The utility model belongs to the technical field of bolt production and processing, and more specifically, particularly relates to a precision bolt die forming and pressing tooling. Background Art

[0002] A bolt die forming and pressing tooling is a special tooling equipment for producing bolts. Through processes such as cold heading or hot heading, it presses metal materials into the specific shape and size of bolts within the die. Under the action of a press, the metal blank is formed within the die cavity, thereby manufacturing bolts with a certain specification and shape. The operation process of the bolt die forming and pressing tooling usually includes steps such as preheating of the blank, placing it into the die, pressing and forming by the press, pressure relief and mold opening, taking out the preform, thread processing, and finally heat treatment and surface treatment. Through these technological processes, bolt products with high strength and good plasticity can be produced.

[0003] However, the common bolt dies still have the following disadvantages during the forming and pressing process:

[0004] 1. The limit holes of the bolt die are fixed. Each time when producing bolts of different sizes, additional time and labor may be required to adjust the tooling, resulting in a decrease in production efficiency. It is difficult to quickly fix the production of bolts with different diameters or sizes, restricting the diversity and flexibility of the production line.

[0005] 2. Most bolt dies are fixed by screws, and it takes more time for disassembly and installation. The difficulty of disassembling the die will increase the difficulty of daily maintenance and cleaning, which may cause wear or damage to the die. Each time the die is replaced, the machine needs to be stopped. The die that is not easily disassembled prolongs the downtime and reduces the effective operating time of the equipment.

[0006] Therefore, in view of this, research and improvement are carried out on the existing structure and deficiencies, and a precision bolt die forming and pressing tooling is provided with the expectation of achieving a more practical value purpose. Content of the Utility Model

[0007] In order to solve the above technical problems, the utility model provides a precision bolt die forming and pressing tooling to solve the above problems.

[0008] A precision bolt mold forming and pressing tooling, comprising a frame. Above the frame is provided a press. Below the press is provided a connecting plate. The lower surface of the connecting plate is fixedly connected with a support plate. The lower surface of the support plate is provided with an upper mold. The lower surface of the press is fixedly connected with a connecting shaft. A first clamping groove is opened on the upper surface of the frame. A lower mold is arranged in the first clamping groove. The lower surface of the lower mold is fixedly connected with a connecting block. Two connecting rods are rotatably connected in the lower mold. A group of limiting plates are fixedly connected to the surfaces of the two connecting rods. The lower surface of the support plate is fixedly connected with two fixing blocks. Two limiting rings are arranged on the surface of the upper mold. A second limiting groove is opened on the lower surface of each of the two fixing blocks. A third limiting groove is opened on the inner wall of each of the two second limiting grooves. A limiting block is movably clamped in each of the two third limiting grooves. An annular groove is opened on the inner wall of each of the two third limiting grooves. A screw rod is rotatably connected in each of the two annular grooves. The lower surface of the connecting block is fixedly connected with two motors. The output shafts of the two motors are respectively fixedly connected with the two connecting rods.

[0009] Preferably, the lower surface of the connecting block is fixedly connected with a connecting column. A first circular groove is opened on the upper surface of the connecting column. A cylinder is movably sleeved in the first circular groove. A blocking ring is fixedly connected to the surface of the cylinder. A spring is fixedly connected to the lower surface of the cylinder and is fixedly connected with the first circular groove. A second circular groove is penetrated and opened on the upper surface of the connecting block. The second circular groove is movably sleeved with the cylinder. Two connecting strips are fixedly connected to the surface of the lower mold. Two first fixing bolts are arranged on the surface of each of the two connecting strips. The two pairs of first fixing bolts are all threadedly sleeved with the frame.

[0010] Preferably, two supporting blocks are fixedly connected to the surface of the connecting column. A fixing ring is fixedly connected to the upper surface of the lower mold. The two supporting blocks are respectively fixedly connected with the two connecting strips. A group of second clamping grooves are penetrated and opened on the surface of the lower mold. The two groups of limiting plates are both arranged in the group of second clamping grooves. An annular groove is opened on the surface of the upper mold. Two second fixing bolts are respectively arranged on the surfaces of the two limiting rings. The two limiting rings are both movably clamped in the annular groove. A first clamping block is fixedly connected to the surface of each of the two limiting rings. The two first clamping blocks are respectively movably clamped in the two second limiting grooves.

[0011] Preferably, a first limiting groove is opened on the surface of each of the two first clamping blocks. The two first limiting grooves are respectively movably clamped with the two limiting blocks. A second clamping block is fixedly connected to the upper surface of each of the two limiting blocks. The two second clamping blocks are respectively threadedly sleeved with the two screw rods.

[0012] Compared with the prior art, the utility model has the following beneficial effects:

[0013] In this utility model, when fixing round rods of different thicknesses, start two motors, and their output shafts will drive the connecting rods fixed thereon to rotate relatively together. A set of limit plates are fixed on the surfaces of both connecting rods, and a set of semi-circular grooves of different sizes are formed on the surface of each limit plate. The opposite semi-circular grooves of the two sets of limit plates limit the round rod, adapting to round rods of different thicknesses, ensuring its stability during the processing and preventing it from moving easily.

[0014] In this utility model, when performing forming pressing, first conduct pre-treatment work on the raw materials such as cutting and heat treatment. After the pre-treatment is completed, place the cut round rod in the lower mold. At this time, start the air cylinder to drive the press to stamp downward, and the upper mold arranged below the press will perform forming treatment on the round rod. After the forming is completed, take out the round rod to complete the overall forming pressing process. The overall adjustable design meets the usage requirements and improves the overall practicality.

[0015] In this utility model, the blocking ring fixed on the cylinder fits with the connecting block, compressing the spring arranged below the cylinder. At this time, the upper end of the round rod is stamped and formed through the upper mold. After the stamping is completed, the press is reset through the air cylinder. During the reset process, the cylinder also resets with the elastic force of the spring. During the reset process of the cylinder, it will push the formed round rod upward, facilitating the subsequent demolding and taking of the bolt, not easily occurring the situation of mold clamping, and reducing manual intervention.

[0016] In this utility model, the two limit rings are fixed through the fixing bolt II. Repeat the operation of the screw on the other side. When the two sides are opened, the upper mold can be disassembled. At this time, replace it with the required upper mold according to the need, clamp it in the two fixing blocks, and drive the clamping block I to perform limit fixing by rotating the screw. The overall operation is convenient. The design that the upper mold is easy to replace enables the production line to quickly adapt to the production requirements of different specifications of bolts, can reduce the downtime during the replacement process, and improve the production efficiency. Brief Description of the Drawings

[0017] Figure 1 is the overall structural schematic diagram of this utility model;

[0018] Figure 2 is the structural schematic diagram of the frame of this utility model;

[0019] Figure 3 is the structural schematic diagram of the lower mold of this utility model;

[0020] Figure 4 is the structural schematic diagram of the connecting block of this utility model;

[0021] Figure 5 is the structural schematic diagram of the limit plate of this utility model;

[0022] Figure 6 It is a schematic structural diagram of the support plate of the present utility model;

[0023] Figure 7 It is a schematic structural diagram of the upper mold of the present utility model;

[0024] Figure 8 It is a schematic structural diagram of the fixing block of the present utility model.

[0025] In the figure, the corresponding relationship between the component names and the drawing reference numbers is as follows: 1. Frame; 2. Press; 3. Connecting plate; 4. Connecting shaft; 5. Support plate; 6. Lower mold; 7. First card slot; 8. Connecting bar; 9. Fixed ring; 10. Connecting block; 11. First fixing bolt; 12. Second card slot; 13. Motor; 14. Connecting column; 15. Support block; 16. Limiting plate; 17. Cylinder; 18. Connecting rod; 19. First circular groove; 20. Second circular groove; 21. Blocking ring; 22. Spring; 23. Screw; 24. Fixing block; 25. Upper mold; 26. Limiting ring; 27. Second fixing bolt; 28. First clamping block; 29. First limiting groove; 30. Second limiting groove; 31. Annular groove; 32. Third limiting groove; 33. Limiting block; 34. Second clamping block. Specific embodiments

[0026] The following further describes in detail the embodiments of the present utility model in conjunction with the drawings and examples. The following examples are used to illustrate the present utility model, but cannot be used to limit the scope of the present utility model.

[0027] Please refer to Figure 1 - Figure 8, the present utility model provides a precision bolt mold forming and pressing tooling, including a frame 1, a press 2 is arranged above the frame 1, a connecting plate 3 is arranged below the press 2, a support plate 5 is fixedly connected to the lower surface of the connecting plate 3, an upper mold 25 is arranged on the lower surface of the support plate 5, a connecting shaft 4 is fixedly connected to the lower surface of the press 2, a first clamping groove 7 is formed on the upper surface of the frame 1, a lower mold 6 is arranged in the first clamping groove 7, a connecting block 10 is fixedly connected to the lower surface of the lower mold 6, two connecting rods 18 are rotatably connected in the lower mold 6, a group of limiting plates 16 are fixedly connected to the surfaces of the two connecting rods 18, two fixing blocks 24 are fixedly connected to the lower surface of the support plate 5, two limiting rings 26 are arranged on the surface of the upper mold 25, a second limiting groove 30 is formed on the lower surface of each of the two fixing blocks 24, a third limiting groove 32 is formed on the inner wall of each of the two second limiting grooves 30, a limiting block 33 is movably clamped in each of the two third limiting grooves 32, an annular groove 31 is formed on the inner wall of each of the two third limiting grooves 32, a screw rod 23 is rotatably connected in each of the two annular grooves 31, two motors 13 are fixedly connected to the lower surface of the connecting block 10, the output shafts of the two motors 13 are respectively fixedly connected to the two connecting rods 18. When fixing round rods with different thicknesses, start the two motors 13, and their output shafts will drive the connected connecting rods 18 to rotate relatively. A group of limiting plates 16 are fixedly connected to the surfaces of the two connecting rods 18, and a group of semi-circular grooves with different sizes are formed on the surface of each limiting plate 16. The opposite semi-circular grooves of the two groups of limiting plates 16 limit the round rod, adapting to round rods with different thicknesses, ensuring its stability during the processing and not easily moving.

[0028] A connecting column 14 is fixedly connected to the lower surface of the connecting block 10, a first circular groove 19 is formed on the upper surface of the connecting column 14, a cylinder 17 is movably sleeved in the first circular groove 19, a blocking ring 21 is fixedly connected to the surface of the cylinder 17, a spring 22 is fixedly connected to the lower surface of the cylinder 17, and the spring 22 is fixedly connected to the first circular groove 19. A second circular groove 20 is formed through the upper surface of the connecting block 10, and the second circular groove 20 is movably sleeved with the cylinder 17. Two connecting strips 8 are fixedly connected to the surface of the lower mold 6, two first fixing bolts 11 are arranged on the surface of each of the two connecting strips 8, and the two pairs of first fixing bolts 11 are threadedly sleeved with the frame 1. When performing forming and pressing, first, perform pretreatment work such as cutting and heat treatment on the raw material. After the pretreatment is completed, place the cut round rod in the lower mold 6. At this time, start the cylinder to drive the press 2 to press downward, and the upper mold 25 arranged below the press 2 will perform forming treatment on the round rod. After the forming is completed, take out the round rod to complete the overall forming and pressing treatment. The overall adjustable design meets the usage requirements and improves the overall practicality.

[0029] Two support blocks 15 are fixedly connected to the surface of the connecting column 14, a fixed ring 9 is fixedly connected to the upper surface of the lower die 6, the two support blocks 15 are respectively fixedly connected to the two connecting strips 8, a group of second clamping grooves 12 are formed through the surface of the lower die 6, and the two groups of limiting plates 16 are both arranged in the group of second clamping grooves 12. An annular groove 31 is formed in the surface of the upper die 25. Two fixing bolts II 27 are respectively arranged on the surfaces of the two limiting rings 26. The two limiting rings 26 are both movably clamped with the annular groove 31. Clamping blocks I 28 are fixedly connected to the surfaces of the two limiting rings 26. The two clamping blocks I 28 are respectively movably clamped with the two second limiting grooves 30. After adjusting the semi-circular groove to the required size according to the requirements, the round bar is placed between the two groups of limiting plates 16. The round bar drops until it fits against the upper surface of the cylinder 17. The cylinder 17 is arranged in the connecting column 14. The connecting column 14 is fixed to the connecting block 10, and the connecting block 10 is integrally arranged below the lower die 6. The lower die 6 is fixedly connected to the frame 1 through the connecting strip 8 arranged thereon. At this time, the air cylinder is started to drive the press 2 and the upper die 25 arranged thereunder to press downward. During the downward movement of the upper die 25, it will push the round bar downward. During the downward movement of the round bar under the pressure, it will push the cylinder 17 to move together until the blocking ring 21 fixed on the cylinder 17 fits against the connecting block 10, compressing the spring 22 arranged below the cylinder 17. At this time, the upper end of the round bar is formed by stamping through the upper die 25. After the stamping is completed, the press 2 is reset through the air cylinder. During the reset process, the cylinder 17 is also reset by the elastic force of the spring 22. During the reset process of the cylinder 17, it will push the formed round bar upward, facilitating the subsequent demoulding and taking of the bolt, not easily causing the situation of die sticking, and reducing manual intervention.

[0030] The surfaces of both clamping blocks 1-28 are provided with limit grooves 1-29. The two limit grooves 1-29 are respectively and movably clamped with the two limit blocks 33. The upper surfaces of the two limit blocks 33 are fixedly connected with clamping blocks 2-34. The two clamping blocks 2-34 are respectively sleeved on the two screw rods 23 in a threaded manner. When bolts of different sizes need to be stamped and formed, the upper die 25 also needs to be replaced with different sizes. Commonly, the upper die 25 is mostly fixed by bolts, and the disassembly is cumbersome, which cannot meet the production needs. By rotating the screw rod 23, the clamping block 2-34 sleeved on its surface will move under the action of the thread. During the movement of the clamping block 2-34, the limit block 33 fixed to it will move together. At this time, the limit block 33 will disengage from the clamping connection with the clamping block 1-28 provided on the upper die 25, opening the limit. The two clamping blocks 1-28 are arranged on the upper die 25 through the limit rings 26 fixed to them. The two limit rings 26 are fixed by fixing bolts 2-27. Repeat the operation of the screw rod 23 on the other side. When the limits on both sides are opened, the upper die 25 can be disassembled. At this time, replace it with the required upper die 25 according to the need, clamp it in the two fixing blocks 24, and drive the clamping block 1-28 to be limited and fixed by rotating the screw rod 23. The overall operation is convenient. The design that the upper die 25 is easy to replace enables the production line to quickly adapt to the production requirements of bolts of different specifications, can reduce the downtime during the replacement process, and improve the production efficiency.

[0031] Working principle:

[0032] First step, when performing forming pressing, first perform pretreatment work such as cutting and heat treatment on the raw material. After the pretreatment is completed, place the cut round bar in the lower die 6. At this time, start the air cylinder to drive the press 2 to press downward. The upper die 25 provided below the press 2 will perform forming treatment on the round bar. After the forming is completed, take out the round bar to complete the overall forming pressing treatment. When fixing round bars of different thicknesses, start the two motors 13, and their output shafts will drive the connecting rods 18 fixed to them to rotate relatively. A set of limit plates 16 are fixed on the surfaces of the two connecting rods 18. A set of semi-circular grooves of different sizes are opened on the surface of each limit plate 16. The opposite semi-circular grooves of the two sets of limit plates 16 limit the round bar. When the two sets of limit plates 16 rotate relatively, the sizes of the two sets of semi-circular grooves also change accordingly to adapt to round bars of different thicknesses, ensuring its stability during the processing process and not easily moving. The overall adjustable design meets the usage needs and improves the overall practicality.

[0033] In the second step, after adjusting the semi-circular groove to the required size according to the requirements, place the round bar between the two sets of limiting plates 16. The round bar drops until it fits against the upper surface of the cylinder 17. The cylinder 17 is arranged inside the connecting column 14. The connecting column 14 is fixed to the connecting block 10, and the connecting block 10 is integrally arranged below the lower die 6. The lower die 6 is fixedly connected to the frame 1 through the connecting strip 8 provided thereon. At this time, start the air cylinder to drive the press 2 and the upper die 25 arranged thereunder to press downward. During the downward movement of the upper die 25, it will push the round bar downward. During the downward movement of the round bar under pressure, it will push the cylinder 17 to move together until the blocking ring 21 fixed on the cylinder 17 fits against the connecting block 10, compressing the spring 22 arranged below the cylinder 17. At this time, the upper end of the round bar is stamped and formed through the upper die 25. After the stamping is completed, the press 2 is reset through the air cylinder. During the reset process, the cylinder 17 is also reset by the elastic force of the spring 22. During the reset process of the cylinder 17, it will push the formed round bar upward, facilitating the subsequent demoulding and taking of the bolt, not easily getting stuck in the die, reducing manual intervention.

[0034] In the third step, when bolts of different sizes need to be stamped and formed, the upper die 25 also needs to be replaced with different sizes. Commonly, the upper die 25 is mostly fixed by bolts, and the disassembly is cumbersome and cannot meet the production needs. By rotating the screw rod 23, the second clamping block 34 sleeved on its surface will move under the action of the thread. During the movement of the second clamping block 34, it will drive the limiting block 33 fixed to it to move together. At this time, the limiting block 33 will disengage from the clamping connection with the first clamping block 28 arranged on the upper die 25, opening the limit. The two first clamping blocks 28 are arranged on the upper die 25 through the limiting rings 26 fixed to them. The two limiting rings 26 are fixed by fixing bolts two 27. Repeat the operation of the screw rod 23 on the other side. When the limits on both sides are opened, the upper die 25 can be disassembled. At this time, replace it with the required upper die 25 according to the needs, and clamp it in the two fixing blocks 24. By rotating the screw rod 23 to drive the first clamping block 28 for limiting and fixing, the overall operation is convenient. The design that the upper die 25 is easy to replace enables the production line to quickly adapt to the production requirements of bolts of different specifications, can reduce the downtime during the replacement process, and improve the production efficiency.

[0035] The embodiments of the present invention are given for purposes of illustration and description, and are not exhaustive or limit the present invention to the disclosed form. Many modifications and variations are obvious to those of ordinary skill in the art. The embodiments are selected and described to better illustrate the principles and practical applications of the present invention, and enable those of ordinary skill in the art to understand the present invention and thus design various embodiments with various modifications suitable for specific purposes.

Claims

1. A precision bolt die forming and pressing tool, comprising a frame (1), characterized in that: A press (2) is arranged above the frame (1), a connecting plate (3) is arranged below the press (2), a support plate (5) is fixedly connected to the lower surface of the connecting plate (3), an upper mold (25) is arranged on the lower surface of the support plate (5), a connecting shaft (4) is fixedly connected to the lower surface of the press (2), a card slot (7) is provided on the upper surface of the frame (1), a lower mold (6) is arranged in the card slot (7), and a connecting block (10) is fixedly connected to the lower surface of the lower mold (6); Among them, two connecting rods (18) are rotatably connected inside the lower mold (6), and a group of limit plates (16) are fixedly connected to the surfaces of the two connecting rods (18). Two fixed blocks (24) are fixedly connected to the lower surface of the support plate (5). Two limit rings (26) are arranged on the surface of the upper mold (25). The lower surfaces of the two fixed blocks (24) are each provided with a limit groove 2 (30), and the inner walls of the two limit grooves 2 (30) are each provided with a limit groove 3 (32). The two limit grooves 3 (32) are each movably engaged with a limit block (33), and the inner walls of the two limit grooves 3 (32) are each provided with an annular groove (31), and the two annular grooves (31) are each rotatably connected with a screw rod (23).

2. A precision bolt die forming and pressing tool as claimed in claim 1, characterized in that: Two motors (13) are fixedly connected to the lower surface of the connection block (10); Wherein, the output shafts of the two motors (13) are fixedly connected to the two connecting rods (18) respectively.

3. A precision bolt die forming and pressing tool as claimed in claim 1, characterized in that: The lower surface of the connecting block (10) is fixedly connected with a connecting column (14), the upper surface of the connecting column (14) is provided with a circular groove (19), and a circular column (17) is movably sleeved in the circular groove (19); Wherein, a blocking ring (21) is fixedly connected to the surface of the cylinder (17).

4. A precision bolt die forming and pressing tool as claimed in claim 3, characterized in that: A spring (22) is fixedly connected to the lower surface of the cylinder (17), and the spring (22) is fixedly connected to the circular groove (19); A second circular groove (20) is formed through the upper surface of the connection block (10), and the second circular groove (20) is movably sleeved with the cylinder (17).

5. A precision bolt die forming and pressing tool as claimed in claim 4, characterized in that: The surface of the lower mold (6) is fixedly connected with two connecting strips (8), and the surfaces of the two connecting strips (8) are each provided with two fixing bolts (11); Wherein, the two pairs of fixing bolts (11) are both threadedly sleeved with the frame (1).

6. A precision bolt die forming and pressing tool as claimed in claim 5, characterized in that: Two support blocks (15) are fixedly connected to the surface of the connecting column (14), and a fixing ring (9) is fixedly connected to the upper surface of the lower mold (6); The two support blocks (15) are respectively fixedly connected to the two connecting bars (8); a group of second card slots (12) are provided through the surface of the lower mold (6); and the two groups of limit plates (16) are both arranged in the group of second card slots (12).

7. A precision bolt die forming and pressing tool as claimed in claim 6, characterized in that: The surface of the upper mold (25) is provided with an annular groove (31), and the surfaces of the two limiting rings (26) are respectively provided with two fixing bolts (27), and the two limiting rings (26) are both movably engaged with the annular groove (31); Wherein, a clamping block 1 (28) is fixedly connected to the surface of the limiting ring (26), and two clamping blocks 1 (28) are movably clamped with two limiting grooves 2 (30) respectively.

8. A precision bolt die forming and pressing tool as claimed in claim 7, characterized in that: The surfaces of the two clamping blocks (28) are both provided with limiting grooves (29), and the two limiting grooves (29) are respectively movably connected with the two limiting blocks (33); Wherein, the upper surfaces of the two limit blocks (33) are fixedly connected with a second clamping block (34), and the two second clamping blocks (34) are respectively threadedly sleeved with the two screw rods (23).

Images