Fastener positioning structure for heat treatment

Abstract

The fastener positioning structure for heat treatment comprises a fixing frame, two limiting shells are fixedly connected to the inner side of the middle of the fixing frame, limiting shafts are slidably connected to the inner sides of the two limiting shells correspondingly, and heat insulation plates are fixedly connected to one ends of the two limiting shafts correspondingly; a mounting frame is fixedly connected to one side of the heat insulation plate, a motor frame is fixedly connected to the other side of the heat insulation plate, a stepping motor is fixedly connected to the middle of the motor frame, a clamp assembly is arranged at the output end of the stepping motor, and a telescopic assembly is fixedly connected to the inner side of the top end of the fixing frame. By means of the heat insulation plate, the stepping motor can be prevented from being damaged by high temperature in the fastener heat treatment process, the service life of the stepping motor is prolonged, a fastener can be clamped and fixed through the clamp assembly, and the fastener can be rapidly fed into a heating furnace through the telescopic assembly.

Description

Technical Field

[0001] This application relates to the technical field of heat treatment auxiliary devices, and in particular to a fastener positioning structure for heat treatment. Background Technology

[0002] Heat treatment refers to a metal heat treatment process in which materials are heated, held at a certain temperature and cooled in a solid state to obtain the desired structure and properties. Fasteners need to be heat treated during production to improve their surface hardness and strength. Most fastener heat treatment processes use positioning structures to position the fasteners, and then send the fasteners into the interior of a heating furnace to perform heat treatment.

[0003] In a related patent, a fastener positioning structure for heat treatment is described. This structure includes a support frame, a first gear, a first bevel gear, a second gear, a motor, a second bevel gear, a first chain, and a second chain. The motor's operation drives two clamping plates to hold the fastener. A starting cylinder moves the support frame into the heat treatment equipment, enabling heat treatment of the fastener. Starting another motor, using the same principle, drives two more clamping plates to hold the top and bottom of the fastener, thus allowing the heat treatment equipment to heat-treat the clamped parts of the fastener.

[0004] In the above technology, although the operation of the motor can drive the two clamping plates to clamp the fastener, the motor and the fastener enter the heating furnace together. The motor will be damaged faster in the high temperature environment, which will reduce the clamping force of the fastener. Summary of the Invention

[0005] In order to reduce the need for the motor to enter the heat treatment furnace synchronously to ensure the stability of the workpiece during processing, this application provides a fastener positioning structure for heat treatment.

[0006] The fastener positioning structure for heat treatment provided in this application adopts the following technical solution:

[0007] A fastener positioning structure for heat treatment includes a fixing frame. Two limiting shells are fixedly connected to the inner side of the middle portion of the fixing frame. Limiting shafts are slidably connected to the inner sides of the two limiting shells. A heat insulation plate is fixedly connected to one end of each of the two limiting shafts. A mounting bracket is fixedly connected to one side of the heat insulation plate, and a motor frame is fixedly connected to the other side of the heat insulation plate. A stepper motor is fixedly connected to the middle portion of the motor frame. A clamping assembly is provided at the output end of the stepper motor. A telescopic assembly is fixedly connected to the inner side of the top of the fixing frame. The heat insulation plate can block the heat of the fastener during the heat treatment process to one side of the heat insulation plate. The clamping assembly can clamp and fix the fastener. The telescopic assembly can quickly move the fastener into the heating furnace.

[0008] Preferably, the telescopic assembly includes a drive motor, the output end of which is fixedly connected to a lead screw, one end of which is slidably connected to a slider, a push rod is fixedly connected to the outer side of the slider, a fixed housing is rotatably connected to the outer side of the lead screw, and the outer side of the push rod is slidably connected to the middle of the fixed housing. The drive motor drives the lead screw to push the heat insulation plate to move under the action of the slider.

[0009] Preferably, the clamping assembly includes two X-axis clamping blocks. Limiting rods are fixedly connected to both sides of each X-axis clamping block. Connecting rod 1 and connecting rod 2 are fixedly connected to one end of each of the two limiting rods on one side. Racks are fixedly connected to opposite sides of connecting rod 1 and connecting rod 2, and the two racks are symmetrically placed. A slider 2 is fixedly connected to one side of one X-axis clamping block. A lead screw 2 is slidably connected to the middle of slider 2. One end of lead screw 2 is fixedly connected to the output end of a stepper motor. The stepper motor drives lead screw 2 to rotate, causing the X-axis clamping blocks to move. The connecting rods 1 and 2 allow the two X-axis clamping blocks to move synchronously relative to each other.

[0010] Preferably, the middle of the connecting rod 2 and the connecting rod 1 are connected by a transmission gear through meshing. The bottom end of the transmission gear is fixedly connected to a transmission rod. The bottom end of the transmission rod is fixedly connected to a bevel gear 1. The outer side of the bevel gear 1 is meshed with a bevel gear 2. The middle of the bevel gear 2 is fixedly connected to a lead screw 3. One end of the lead screw 3 is provided with a Y-axis clamping assembly. The transmission gear drives the bevel gear 1 to rotate, which in turn drives the bevel gear 2 to rotate, thereby transmitting power to the Y-axis clamping assembly.

[0011] Preferably, the Y-axis clamping assembly includes a slider three, the middle of which is slidably connected to the outside of the lead screw three. A Y-axis clamping block is fixedly connected to one side of the slider three. Limiting rods two are fixedly connected to both sides of the Y-axis clamping block. Slide grooves are provided on both sides of the bottom end of the mounting frame. One end of the limiting rod two is slidably connected to the inside of the slide groove. A fixing rod is rotatably connected to the other side of the lead screw three. The two ends of the fixing rod are fixedly connected to the surface of the mounting frame. The fixing rod can make the lead screw three rotate more smoothly, and the limiting rod two can make the Y-axis clamping block move more smoothly.

[0012] Preferably, the X-axis clamping block has a groove on its inner side, and a spring is fixedly connected to the inner side of the groove. One end of the spring is fixedly connected to a sliding clamping block, which is slidably connected to the inner side of the groove. By using the sliding clamping block and the spring, the sliding clamping block can clamp the fastener more firmly, and at the same time, the X-axis clamping block can continue to clamp the fastener when it is away from the fastener.

[0013] Preferably, the sliding clamp is made of ceramic material, and a heat-resistant layer is fixedly connected to the side of the Y-axis clamp away from the slider. The heat-resistant layer is also made of ceramic material. Using ceramic material for both the sliding clamp and the heat-resistant layer can extend the service life of the clamp.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows: By fixing the stepper motor to the outside of the heat insulation plate, damage to the stepper motor due to high temperature during the heat treatment of the fastener can be prevented. The stepper motor can move the X-axis clamping block through the use of lead screw two and slider two. The other X-axis clamping block can be moved through the use of connecting rod one and connecting rod two on both sides and the transmission gear, realizing the synchronous inward movement of the two X-axis clamping blocks. By setting springs and sliding clamping blocks on the inner side of the X-axis clamping blocks, the fastener can be clamped and fixed to the sliding clamping blocks. The transmission gear drives the bevel gear one to rotate, which meshes with the bevel gear two to rotate the lead screw three, driving the slider three to push the Y-axis clamping block to move, realizing the synchronous movement of the two Y-axis clamping blocks, which move in the opposite direction to the movement of the two X-axis clamping blocks. By reversing the stepper motor, the two X-axis clamping blocks can be moved away from the fastener, and the two Y-axis clamping blocks can contact the fastener. The sliding clamping block is pushed by the spring. Contact with the fastener prevents the fastener from falling off when the X-axis clamping block moves away from it. This allows the fastener to be heated evenly during heat treatment by switching the clamping position. By driving the motor to rotate the lead screw, the push rod can push the heat insulation plate into the heating furnace, allowing the device to quickly feed the fastener into the heating furnace. Attached Figure Description

[0015] Figure 1 is an isometric view of the overall structure of the fastener positioning structure for heat treatment, which is the main embodiment of this application.

[0016] Figure 2 is a partial cross-sectional view of the overall structure of the telescopic component in the embodiment of this application;

[0017] Figure 3 is an isometric view of the fixture assembly, which is the main embodiment of this application.

[0018] Figure 4 is a half-sectional isometric view of the internal structure of the mounting bracket, which is the main feature of this embodiment.

[0019] Figure 5 is a top view of the transmission part structure in the embodiment of this application;

[0020] Figure 6 is a half-sectional view of the internal structure of the X-axis clamping block, which is the main feature of this application embodiment.

[0021] Reference numerals in the attached diagram: 1. Fixed frame; 2. Push rod; 3. Fixed outer shell; 4. Drive motor; 5. Lead screw one; 6. Slider one; 7. Heat insulation plate; 8. Mounting frame; 9. Stepper motor; 10. Motor frame; 11. Lead screw two; 12. Slider two; 13. X-axis clamping block; 14. Limiting rod one; 15. Connecting rod one; 16. Connecting rod two; 17. Transmission gear; 18. Transmission rod; 19. Bevel gear one; 20. Bevel gear two; 21. Lead screw three; 22. Slider three; 23. Y-axis clamping block; 24. Limiting rod two; 25. Fixed rod; 26. Limiting shaft; 27. Limiting outer shell; 28. Spring; 29. ​​Sliding clamping block. Detailed Implementation

[0022] The present application will be further described in detail below with reference to Figures 1-6.

[0023] This application discloses a fastener positioning structure for heat treatment.

[0024] Referring to Figures 1-6, the fastener positioning structure for heat treatment includes a fixing frame 1. Two limiting shells 27 are fixedly connected to the inner side of the middle part of the fixing frame 1. Limiting shafts 26 are slidably connected to the inner side of each of the two limiting shells 27. A heat insulation plate 7 is fixedly connected to one end of each of the two limiting shafts 26. A mounting bracket 8 is fixedly connected to one side of the heat insulation plate 7. A motor frame 10 is fixedly connected to the other side of the heat insulation plate 7. A stepper motor 9 is fixedly connected to the middle of the motor frame 10. A clamping assembly is provided at the output end of the stepper motor 9. A telescopic assembly is fixedly connected to the inner side of the top of the fixing frame 1. The limiting shafts 26 slide inside the limiting shells 27 to move the heat insulation plate 7.

[0025] Furthermore, the telescopic assembly includes a drive motor 4, with a lead screw 5 fixedly connected to the output end of the drive motor 4. A slider 6 is slidably connected to one end of the lead screw 5. A push rod 2 is fixedly connected to the outer side of the slider 6. A fixed housing 3 is rotatably connected to the outer side of the lead screw 5. The outer side of the push rod 2 is slidably connected to the middle of the fixed housing 3. The drive motor 4 rotates, causing the lead screw 5 to rotate, which slides the slider 6 on the surface of the lead screw 5, pushing the push rod 2 to move, and thus pushing the heat insulation plate 7 to move.

[0026] Furthermore, the clamping assembly includes two X-axis clamping blocks 13. Limiting rods 14 are fixedly connected to both sides of the two X-axis clamping blocks 13. One end of each of the two limiting rods 14 on one side is fixedly connected to a connecting rod 15 and a connecting rod 16. A rack is fixedly connected to the opposite side of the connecting rod 15 and the connecting rod 16. The two racks are symmetrically placed. A slider 12 is fixedly connected to one side of one X-axis clamping block 13. A lead screw 11 is slidably connected to the middle of the slider 12. One end of the lead screw 11 is fixedly connected to the output end of the stepper motor 9. The stepper motor 9 drives the lead screw 11 to rotate, and moves the X-axis clamping block 13 through the slider 12, thereby moving the connecting rods 15 and 16 on both sides.

[0027] Furthermore, a transmission gear 17 is meshed with the middle of connecting rod 16 and connecting rod 15. A transmission rod 18 is fixedly connected to the bottom end of the transmission gear 17. A bevel gear 19 is fixedly connected to the bottom end of the transmission rod 18. A bevel gear 20 is meshed with the outer side of bevel gear 19. A lead screw 21 is fixedly connected to the middle of bevel gear 20. One end of lead screw 21 is provided with a Y-axis clamp assembly. Through the transmission gear 17, the two pairs of connecting rods 15 and connecting rod 16 can move relative to each other, causing the two X-axis clamps 13 to move relative to each other simultaneously. At the same time, the transmission gear 17 rotates, which drives bevel gear 19 to rotate through the transmission rod 18, which in turn drives bevel gear 20 to rotate, causing lead screw 21 to rotate.

[0028] Furthermore, the Y-axis clamping assembly includes a slider 22, the middle of which is slidably connected to the outside of the lead screw 21. A Y-axis clamping block 23 is fixedly connected to one side of the slider 22. Limiting rods 24 are fixedly connected to both sides of the Y-axis clamping block 23. Slide grooves are provided on both sides of the bottom end of the mounting frame 8. One end of the limiting rod 24 is slidably connected to the inside of the slide groove. A fixing rod 25 is rotatably connected to the other side of the lead screw 21. The two ends of the fixing rod 25 are fixedly connected to the surface of the mounting frame 8. The rotation of the lead screw 21 causes the slider 22 to slide on the surface of the lead screw 21, pushing the Y-axis clamping block 23 to move.

[0029] Furthermore, a groove is provided on the inner side of the X-axis clamping block 13, and a spring 28 is fixedly connected to the inner side of the groove. One end of the spring 28 is fixedly connected to a sliding clamping block 29, which is slidably connected to the inner side of the groove.

[0030] Furthermore, the sliding clamp 29 is made of ceramic material, and the Y-axis clamp 23 is fixedly connected to a heat-resistant layer on the side away from the slider 22, the heat-resistant layer being made of ceramic material.

[0031] In this embodiment, the following operation is performed: The stepper motor 9 rotates forward, driving the lead screw 11 to rotate, causing the slider 12 to slide on the surface of the lead screw 11. This moves the X-axis clamp 13, which in turn moves the connecting rod 15 and connecting rod 16 via the limiting rod 14. Under the action of the transmission gear 17, another pair of limiting rods 14 and connecting rod 15 move the other X-axis clamp 13, causing the two X-axis clamps 13 to move inward relative to each other. Simultaneously, the two sliding clamps 29 move inward relative to each other, contacting the fastener to be processed. The two X-axis clamps 13 continue to move inward relative to each other, compressing the spring 28 and fixing the fastener. The transmission gear 17 rotates, driving the bottom transmission rod 18 and bevel gear 19 to rotate. This meshes with the bevel gear 20, causing it to rotate. The bevel gear 20 then drives the lead screw 21 to rotate, causing the slider 22 on the outside of the lead screw 21 to move. The slide screw 21 slides on the surface of the lead screw 21, causing the Y-axis clamping block 23 to move outward. This causes the two Y-axis clamping blocks 23 to move outward relative to each other. At this time, the drive motor 4 runs and drives the lead screw 5 to rotate, causing the slider 6 on the outside of the lead screw 5 to move on the surface of the lead screw 5. This pushes the push rod 2 to move the heat insulation plate 7 and the mounting bracket 8 towards the heating furnace, pushing the fastener to be processed into the heating furnace for heat treatment. At the same time, the two limiting shafts 26 at the bottom of the heat insulation plate 7 slide out under the limiting housing 27, making the movement more stable. After a period of time, the stepper motor 9 reverses, causing the two X-axis clamping blocks 13 to move outward relative to each other at the same time. The sliding clamping block 29 continues to clamp the fastener under the action of the spring 28. The two Y-axis clamping blocks 23 move inward relative to each other at the same time, contacting the fastener. The stepper motor 9 continues to reverse, and the two Y-axis clamping blocks 23 clamp and fix the fastener. The sliding clamping block 29 disengages from the surface of the fastener.

[0032] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A fastener positioning structure for heat treatment, comprising a fixing frame (1), characterized in that: Two limiting shells (27) are fixedly connected to the inner side of the middle part of the fixed frame (1). The inner sides of the two limiting shells (27) are slidably connected to limiting shafts (26). One end of the two limiting shafts (26) is fixedly connected to a heat insulation plate (7). One side of the heat insulation plate (7) is fixedly connected to a mounting bracket (8). The other side of the heat insulation plate (7) is fixedly connected to a motor frame (10). The middle part of the motor frame (10) is fixedly connected to a stepper motor (9). The output end of the stepper motor (9) is provided with a clamp assembly. The inner side of the top of the fixed frame (1) is fixedly connected to a telescopic assembly.

2. The fastener positioning structure for heat treatment according to claim 1, characterized in that: The telescopic assembly includes a drive motor (4), the output end of which is fixedly connected to a lead screw (5), one end of which is slidably connected to a slider (6), the outer side of which is fixedly connected to a push rod (2), the outer side of which is rotatably connected to a fixed housing (3), and the outer side of which is slidably connected to the middle of the fixed housing (3).

3. The fastener positioning structure for heat treatment according to claim 1, characterized in that: The clamping assembly includes two X-axis clamps (13). Limiting rods (14) are fixedly connected to both sides of the two X-axis clamps (13). One end of the two limiting rods (14) on one side is fixedly connected to a connecting rod (15) and a connecting rod (16). A rack is fixedly connected to the opposite side of the connecting rod (16) and the connecting rod (15). The two racks are placed symmetrically. A slider (12) is fixedly connected to one side of the X-axis clamp (13). A lead screw (11) is slidably connected to the middle of the slider (12). One end of the lead screw (11) is fixedly connected to the output end of the stepper motor (9).

4. The fastener positioning structure for heat treatment according to claim 3, characterized in that: The middle of the connecting rod 2 (16) and the connecting rod 1 (15) are connected by a transmission gear (17) through meshing. The bottom end of the transmission gear (17) is fixedly connected to a transmission rod (18). The bottom end of the transmission rod (18) is fixedly connected to a bevel gear 1 (19). The outer side of the bevel gear 1 (19) is meshed with a bevel gear 2 (20). The middle of the bevel gear 2 (20) is fixedly connected to a lead screw 3 (21). One end of the lead screw 3 (21) is provided with a Y-axis clamp assembly.

5. The fastener positioning structure for heat treatment according to claim 4, characterized in that: The Y-axis clamp assembly includes a slider three (22), the middle of which is slidably connected to the outside of the lead screw three (21). A Y-axis clamping block (23) is fixedly connected to one side of the slider three (22). Limiting rods two (24) are fixedly connected to both sides of the Y-axis clamping block (23). Slide grooves are provided on both sides of the bottom end of the mounting frame (8). One end of the limiting rod two (24) is slidably connected to the inside of the slide groove. A fixing rod (25) is rotatably connected to the other side of the lead screw three (21). The two ends of the fixing rod (25) are fixedly connected to the surface of the mounting frame (8).

6. The fastener positioning structure for heat treatment according to claim 5, characterized in that: The X-axis clamp (13) has a groove on its inner side, and a spring (28) is fixedly connected to the inner side of the groove. One end of the spring (28) is fixedly connected to a sliding clamp (29), which is slidably connected to the inner side of the groove.

7. The fastener positioning structure for heat treatment according to claim 6, characterized in that: The sliding clamp (29) is made of ceramic material, and the Y-axis clamp (23) is fixedly connected to a heat-resistant layer on the side away from the slider (22), and the heat-resistant layer is made of ceramic material.

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