Feeding device for tapping automobile bolt

Abstract

The invention relates to the field of bolt machining devices, and discloses a feeding device for automobile bolt tapping machining, which comprises a support frame, a feeding frame and a driving module for driving the feeding frame, a plurality of material placing grooves for placing workpieces are formed in the top of the support frame, the top surface of the feeding frame is flush with the groove bottom surfaces of the material placing grooves, and the driving module is used for driving the feeding frame to rotate. An adjusting assembly corresponding to one row of discharging grooves in position is jointly arranged between the feeding frame and the supporting frame, and the adjusting assembly vertically corresponds to the row of discharging grooves along the center line of the supporting frame in the length direction. Through cooperation of the supporting frame, the feeding frame, the discharging groove, the adjusting assembly and the like, the adjusting assembly can be driven to move to the position above a workpiece and descend, after the adjusting assembly makes contact with the workpiece, the workpiece can be pressed, and the workpiece can also be limited to the center, in the length direction of the supporting frame, of the discharging groove; and therefore, the workpiece automatically corresponds to the tapping module front and back, subsequent tapping operation is facilitated, and the tapping effect is guaranteed.

Description

Technical Field

[0001] The present invention relates to the technical field of bolt processing devices, and particularly relates to a feeding device for tapping and processing automotive bolts. Background Art

[0002] A turnbuckle bolt is an adjustable-length connecting piece, which consists of a rod body with threads at both ends and a central adjusting sleeve (the sleeve is a ring with a certain length). Its applications in automobiles mainly focus on modification, racing, commercial vehicles, and maintenance scenarios. When processing a turnbuckle bolt, the sleeve needs to be placed flat so that its two ends respectively correspond to the tapping module to complete the tapping operation.

[0003] As disclosed in Chinese Patent Publication No. CN215903064U, a turnbuckle bolt flow drilling and tapping device is disclosed, which includes two feeding plates arranged vertically side by side, supporting vertical plates arranged outside the feeding plates, a lifting mechanism for the up and down movement of the feeding plates, and a driving mechanism for the horizontal linear movement of the feeding plates. The two supporting vertical plates are arranged side by side, and a number of first supporting grooves are arranged at intervals on the upper end surfaces of the supporting vertical plates. A number of second supporting grooves are arranged at intervals on the upper end surfaces of the feeding plates. Drilling equipment and tapping equipment are respectively arranged outside the two supporting vertical plates near the positions of the first supporting grooves; a flow conveying device for feeding turnbuckle bolts is also arranged near the driving mechanism. It can improve the efficiency of drilling and tapping of turnbuckle bolts, and at the same time, a flow conveying device is provided to realize the flow of turnbuckle bolt feeding, greatly improving the working efficiency.

[0004] This application realizes the placement of workpieces by opening supporting grooves on the supporting vertical plates, which has relatively high requirements for the size of workpieces. If there are size deviations, the tapping machine will be misaligned with the position to be processed of the workpiece, thereby affecting the tapping effect after the transportation of multiple workpieces, and there are certain limitations in use.

[0005] Therefore, it is necessary to provide a feeding device for tapping and processing automotive bolts to solve the above technical problems. Summary of the Invention

[0006] The purpose of the present invention is to provide a feeding device for tapping and processing automotive bolts to solve the problems of poor adaptability to the size of workpieces and inability to ensure the front-to-back correspondence between the workpiece and the tapping machine as mentioned in the above background art.

[0007] To achieve the above purpose, a feeding device for tapping and processing automotive bolts is designed, which can press the workpiece from top to bottom and can achieve the front-to-back correspondence between the workpiece and the tapping machine.

[0008] Based on the above ideas, the present invention provides the following technical solution: A feeding device for tapping automotive bolts, including a support frame, a feeding frame, and a driving module for driving the feeding frame. A plurality of material placing grooves for placing workpieces are provided at the top of the support frame. The top surface of the feeding frame is flush with the bottom surface of the material placing groove. An adjusting component corresponding to the position of one column of material placing grooves is jointly provided between the feeding frame and the support frame, and the adjusting component is vertically corresponding to the center line of the column of material placing grooves along the length direction of the support frame; when the driving module drives the feeding frame to descend again based on the initial position, the adjusting component descends synchronously with the feeding frame, and the adjusting component can slide in the direction close to the support frame.

[0009] As a further solution of the present invention: The adjusting component includes a base slidably matched with the feeding frame and a slider slidably matched with the support frame. A pressing block corresponding to the material placing groove up and down is fixedly installed on the surface of the base. A first spring is jointly fixedly installed between the base and the feeding frame, and a traction rope is jointly fixedly connected between the base and the slider.

[0010] As a further solution of the present invention: The bottom of the pressing block is provided with two symmetrically designed inclined sides, and the junction of the two inclined sides is vertically corresponding to the center line of the corresponding material placing groove along the length direction of the support frame.

[0011] As a further solution of the present invention: A groove for the base to slide is provided at the top of the feeding frame. The base slides back and forth relative to the feeding frame based on the chute, and a through hole is provided on the surface of the feeding frame to avoid the back and forth sliding of the base.

[0012] As a further solution of the present invention: The slider reciprocally slides along the length direction of the support frame. A chute for the slider to slide is provided on the surface of the feeding frame, and the slider slides up and down relative to the feeding frame based on the chute.

[0013] As a further solution of the present invention: The traction rope passes through the inside of the feeding frame. When the feeding frame rises, the traction rope can be pulled to make the base move away from the support frame based on the feeding frame. When the feeding frame descends, the traction rope can be released to make the base move close to the support frame based on the feeding frame.

[0014] As a further solution of the present invention: Inner lining platforms are inwardly protruded from the front and rear inner walls of the support frame, and the inner lining platforms are in front and rear correspondence with the base. An avoidance groove for the base to move is jointly provided between the support frame and the inner lining platform.

[0015] As a further solution of the present invention: The bottom of the avoidance groove is lower than the bottom of the base, so that there is a distance between their bottoms when the base slides into the avoidance groove.

[0016] As a further solution of the present invention: Push blocks are fixedly installed on opposite sides of the two pressing blocks. The surface of the push block away from the pressing block is provided with an inclined edge, and the inclined edges of the two push blocks are in an inverted V shape.

[0017] As a further solution of the present invention: A vertical groove is jointly opened on the support frame and the feeding frame. The vertical groove corresponds to the push block up and down and has a size adaptation.

[0018] Compared with the prior art, the beneficial effects of the present invention are: Through the cooperation between the support frame, the feeding frame, the feeding groove and the adjusting component, etc., the adjusting component can be driven to move above the workpiece and descend. When the adjusting component contacts the workpiece, it can not only realize the pressing of the workpiece, but also limit the workpiece at the center of the feeding groove along the length direction of the support frame, so that the workpiece automatically corresponds to the tapping module front and back, facilitating subsequent tapping operations and ensuring the tapping effect. When the tapping is completed, the pressing and limiting of the workpiece by the adjusting component also facilitates the separation of the tapping module from the workpiece, avoiding the offset and dislocation of the workpiece along the feeding groove, and ensuring the accurate movement of the subsequent feeding frame driving the workpiece.

[0019] At the same time, through the adjusting component, the applicable range of the device can be greatly improved, and it can be applied to workpieces of different sizes. When the adjusting component contacts the inner walls on the left and right sides of workpieces of different sizes, it can push the workpiece to move until it corresponds to the center of the feeding groove, reducing the trouble of replacement and assembly when processing workpieces of different sizes. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The present invention will be further described below with reference to the drawings and embodiments: Figure 1 is a three-dimensional view of the overall structure of the present invention; Figure 2 is a schematic diagram of the inner lining table and the avoidance groove structure of the present invention; Figure 3 is a schematic diagram of the base, slider and traction rope structure of the present invention; Figure 4 is Figure 3 the enlarged view of the structure at A in Figure 5 is a schematic diagram of the tapping module and the feeding groove structure of the present invention; Figure 6 is a schematic diagram of the support frame and the vertical groove structure of the present invention; Figure 7 is Figure 6 the enlarged view of the structure at B in Figure 8 is a schematic diagram of the push block and the vertical groove structure of the present invention; Figure 9 is a schematic diagram of the pressing block and the side plate structure of the present invention; Figure 10 is Figure 9Enlarged view of the structure at position C in the [specific object].

[0021] In the figure: 1, support frame; 2, feeding frame; 3, driving module; 4, material placing groove; 5, adjusting component; 6, tapping module; 7, pushing block; 8, vertical groove; 101, inner lining table; 102, avoiding groove; 201, groove; 202, sliding groove; 203, through hole; 501, base; 502, pressing block; 503, first spring; 504, towing rope; 505, slider; 701, side plate; 702, support rod; 703, short shaft; 704, second spring; 705, long hole. Specific implementation mode Embodiment

[0022] Please refer to Figures 1 to 5 , an embodiment of the present invention provides a feeding device for tapping processing of automotive bolts, aiming at the tapping processing and feeding of workpieces (sleeves) when placed flat, mainly used to achieve stable correspondence between the workpiece and the tapping module 6 after feeding the workpiece and ensure the processing effect. The device includes a support frame 1 for supporting the workpiece, a feeding frame 2 for conveying the workpiece is arranged outside the support frame 1, a driving module 3 for driving the feeding frame 2 is arranged inside the support frame 1, and a plurality of material placing grooves 4 for placing the workpiece and arranged at equal intervals are opened at the top of the support frame 1, and the top surface of the feeding frame 2 is flush with the groove bottom surface of the material placing groove 4.

[0023] Among them, the driving module 3 includes a longitudinal cylinder and a transverse cylinder for driving the feeding frame 2 to move. The longitudinal cylinder is used to lift the feeding frame 2 and drive the workpiece to rise synchronously, and the transverse cylinder is used to drive the feeding frame 2 and the workpiece to move left and right. When the longitudinal cylinder lifts the feeding frame 2, all the workpieces on the support frame 1 can be lifted, and at this time the workpiece is separated from the support frame 1; when the transverse cylinder translates the feeding frame 2, all the workpieces can be translated and vertically correspond to the next material placing groove 4, and then the longitudinal cylinder drives the feeding frame 2 to descend so that the workpiece resumes the state of contacting the support frame 1.

[0024] Further, an adjusting component 5 corresponding to the position of one column of the material placing grooves 4 is jointly arranged between the feeding frame 2 and the support frame 1. When the longitudinal cylinder drives the feeding frame 2 to rise, the feeding frame 2 can drive the adjusting component 5 to rise, and the adjusting component 5 can also slide to the side away from the support frame 1 based on the feeding frame 2; when the longitudinal cylinder drives the feeding frame 2 to descend based on the initial height of the feeding frame 2, the feeding frame 2 can drive the adjusting component 5 to descend, and the adjusting component 5 can slide to the side close to the support frame 1 based on the feeding frame 2, and the adjusting component 5 can slide to a state overlapping with the support frame 1. During this process, the upper and lower limits of the workpiece can be realized from top to bottom.

[0025] Furthermore, referring to Figure 5, the adjusting component 5 and the corresponding material discharging groove 4 are vertically corresponding along the center line of the length direction of the support frame 1. When the adjusting component 5 limits the workpiece from top to bottom, it also has the effect of centering the workpiece in the left-right direction, so that the workpiece can automatically form a front-back correspondence with the tapping module 6. Among them, the tapping module 6 can be fixedly installed on the support frame 1, and is vertically offset from the feeding frame 2 without affecting its movement, and the tapping module 6 is also corresponding to the center line of the material discharging groove 4 in the left-right direction.

[0026] In this embodiment, the support frame 1, the feeding frame 2, the longitudinal cylinder, the transverse cylinder, and the tapping module 6 are all existing mature technologies, and their specific structures and usage methods will not be described in detail here.

[0027] Refer to Figure 1 and Figure 2 , in this embodiment, preferably: the front and rear inner walls of the support frame 1 both protrude inward to form lining platforms 101, and the lining platforms 101 and the adjusting component 5 are in front-back position correspondence. A relief groove 102 for the movement of the adjusting component 5 is jointly opened between the support frame 1 and the lining platform 101; when the adjusting component 5 slides to a state overlapping with the support frame 1, it enters the relief groove 102.

[0028] Among them, the relief groove 102 has a moving length in the up-down direction, so that the adjusting component 5 can smoothly enter the relief groove 102 when descending with the feeding frame 2. And because the lining platform 101 increases the front-back distance of the relief groove 102, the adjusting component 5 can smoothly slide toward the side close to the support frame 1.

[0029] Refer to Figures 2 to 4 , in this embodiment, preferably: the adjusting component 5 includes a base 501 slidably matched with the feeding frame 2 and a slider 505 slidably matched with the support frame 1. The bottom of the relief groove 102 is lower than the bottom of the base 501, so that the base 501 can normally enter the relief groove 102 when lifting and lowering with the longitudinal cylinder. A pressing block 502 corresponding to the material discharging groove 4 up and down is fixedly installed on the surface of the base 501. The bottom of the pressing block 502 is provided with two symmetrical hypotenuses, and the junction of the two hypotenuses is vertically corresponding to the center line of the material discharging groove 4 along the length direction of the support frame 1.

[0030] At the same time, a first spring 503 is fixedly installed between the base 501 and the feeding frame 2. The first spring 503 makes the base 501 tend to slide toward the support frame 1. A traction rope 504 passing through the feeding frame 2 is fixedly connected between the base 501 and the slider 505; when the feeding frame 2 rises, the traction rope 504 can be pulled to make the base 501 move forward / backward, and when the feeding frame 2 descends, the traction rope 504 can be released to make the base 501 close to the middle.

[0031] The top of the feed rack 2 is provided with a groove 201 for the base 501 to slide. The base 501 slides back and forth relative to the feed rack 2 based on the slide groove 202, while the slider 505 slides left and right with the support frame 1. At the same time, a through hole 203 is provided on the surface of the feed rack 2 away from the support frame 1 to avoid the back and forth sliding of the base 501, so that when the base 501 slides away from the support frame 1 based on the feed rack 2, it will not interfere with the feed rack 2.

[0032] Furthermore, a sliding groove 202 is provided on the surface of the feed rack 2 close to the support frame 1 for the slider 505 to slide. The slider 505 slides up and down relative to the feed rack 2 based on the sliding groove 202. At this time, when the feed rack 2 moves up and down under the action of the longitudinal cylinder, the slider 505 will not move, and when the feed rack 2 moves left and right under the action of the transverse cylinder, it can drive the slider 505 to move synchronously. At this time, the slider 505 can keep synchronized with the base 501 and will not affect the use of the traction rope 504.

[0033] In the above structure, the initial position of the base 501 relative to the feed rack 2 can be correspondingly limited, so that when the base 501 is in the initial position relative to the feed rack 2, the base 501 and the workpiece are in a front-to-back offset state, so that when the base 501 is transported along with the feed rack 2, the base 501 will not come into contact with the workpiece. Alternatively, the height of the unloading module (not shown in the figure) that receives the processed workpiece can be relatively increased, so that its height is higher than the top surface of the support frame 1. As a result, after the feed rack 2 drives the processed workpiece to fall to the unloading module, the base 501 is still in a state of separation towards the front and rear sides, which can also avoid contact and interference between the base 501 and the workpiece.

[0034] During use, the workpiece falls onto the discharge trough 4, and the longitudinal cylinder is started first to drive the feed rack 2 and the workpiece to rise. During this process, the traction rope 504 will drive the base 501 to separate to the front / rear side and squeeze the first spring 503; the transverse cylinder is started again to drive the feed rack 2 and the workpiece to move left to the top of the next discharge trough 4, and then the longitudinal cylinder is started to drive the feed rack 2 and the workpiece to descend until the support frame 1 and the feed rack 2 return to the initial state of complete overlap, and then the transverse cylinder is started to drive the feed rack 2 to move right and reset. During this process, the workpiece will be blocked in the discharge trough 4, and even if the rightward reset of the feed rack 2 contacts the workpiece, it will not be offset by a long distance.

[0035] Next, the vertical cylinder drives the feeding frame 2 to continue descending based on the initial position. At this time, the towing rope 504 is released, causing the base 501 to slide towards the support frame 1 under the action of the first spring 503. When the base 501 slides, it enters the avoidance groove 102 and also descends synchronously with the feeding frame 2. When the pressing block 502 contacts the inner wall of the workpiece in the left-right direction, the workpiece can be automatically pushed to the center of the feeding groove 4 in the left-right direction through the two bevel edges. At this time, the workpiece can be aligned with the tapping module 6 front and back, and the pressing block 502 also has the effect of pressing the workpiece. Subsequently, when the tapping module 6 is started, the tapping operation can be successfully completed.

[0036] In summary, through the cooperation of structures such as the support frame 1, the feeding frame 2, the base 501, and the pressing block 502, the pressing block 502 can be driven to move above the workpiece and descend. When the two bevel edges come into contact, the workpiece can be both pressed and positioned at the center of the feeding groove 4 in the left-right direction, thereby enabling the workpiece to automatically align with the tapping module 6 front and back, facilitating the subsequent tapping operation and ensuring the tapping effect. After tapping, the pressing effect of the pressing block 502 on the workpiece also facilitates the separation of the tapping module 6 from the workpiece, avoiding the offset and dislocation of the workpiece along the feeding groove 4 and ensuring the accurate movement of the workpiece driven by the subsequent feeding frame 2.

[0037] At the same time, the two bevel edges of this device greatly improve the applicable range and can be applied to workpieces of different sizes. When contacting the inner walls on both sides of workpieces of different sizes, the workpiece can be pushed to move until it corresponds to the center of the feeding groove 4 in the left-right direction, reducing the trouble of replacement and assembly when processing workpieces of different sizes. Embodiment

[0038] Please refer to Figures 1 to 8 , on the basis of the first embodiment, considering that the workpiece may not be at the center of the support frame 1 in the front-back direction (front-back misalignment) after falling into the feeding groove 4. At this time, if the tapping modules 6 on both the front and back sides advance for processing simultaneously, one of the tapping modules 6 may contact the workpiece first and push the workpiece to move, making it impossible to achieve the process of the two tapping modules 6 contacting and starting processing simultaneously, affecting the overall tapping effect.

[0039] Therefore, push blocks 7 are fixedly installed on the opposite sides of the two pressing blocks 502. The surface of the push block 7 away from the pressing block 502 is also provided with bevel edges, and the bevel edges of the two push blocks 7 are in an inverted V shape. As the pressing block 502 descends with the base 501, the push blocks 7 also move synchronously, causing the two push blocks 7 to contact the front and back inner walls of the workpiece respectively, thereby achieving the effect of automatically centering the workpiece along the front-back direction of the support frame 1.

[0040] Further, vertical slots 8 corresponding to the push blocks 7 up and down and with compatible dimensions are formed on the support frame 1 and the feeding frame 2. When the push blocks 7 descend with the pressing block 502, the vertical slots 8 can provide an avoidance effect for the push blocks 7, preventing interference between the push blocks 7 and the support frame 1 and the feeding frame 2, and ensuring smooth contact between the push blocks 7 and the front and rear inner walls of the workpiece.

[0041] During use, through structures such as the support frame 1, the feeding frame 2, and the pressing block 502, the pressing block 502 can be driven to move to both press the workpiece and position the workpiece at the center of the feeding slot 4 in the left - right direction. This part of the working process and effect is the same as in the first embodiment and will not be repeated here. The difference is that when the longitudinal cylinder drives the feeding frame 2 to continue descending based on the initial position, the hypotenuse of the pressing block 502 contacts the left and right inner walls of the workpiece to achieve left - right positioning and provide a pressing effect on the workpiece; at the same time, the pressing block 502 also drives the push blocks 7 to move, so that the two push blocks 7 respectively contact the front and rear inner walls of the workpiece, and further enable the workpiece to be positioned and centered in the front - rear direction within the feeding slot 4.

[0042] Compared with the first embodiment, through the cooperation of structures such as the pressing block 502, the vertical slots 8, and the support frame 1, on the one hand, the movement of the pressing block 502 realizes the pressing of the workpiece and the positioning and centering in the left - right direction, and on the other hand, drives the push blocks 7 to move synchronously, so that the two push blocks 7 contact the front and rear inner walls of the workpiece, thereby realizing the positioning and centering of the workpiece in the front - rear direction, enabling the two tapping modules 6 to contact the workpiece synchronously, and thus ensuring a reliable tapping effect. The overall solution is combined with the movement of the pressing block 502, and because the push blocks 7 limit the workpiece in the front - rear direction, it is more conducive to the subsequent rapid separation of the tapping module 6 from the workpiece. Embodiment

[0043] Please refer to Figures 1 to 10 , on the basis of the second embodiment, considering that the tapping module 6 will penetrate the workpiece in the front - rear direction during processing to form internal threads, and when the push block 7 contacts the front / rear inner wall of the workpiece, it may interfere with the through - tapping of the tapping module 6.

[0044] Therefore, the push block 7 is improved: at this time, the push block 7 includes a support rod 702 slidably matched with the pressing block 502. A second spring 704 is sleeved on the outer surface of the support rod 702, and the second spring 704 makes the support rod 702 tend to extend out of the pressing block 502. A short shaft 703 is rotatably installed on the outer surface of the support rod 702. A side plate 701 is fixedly installed at the end of the short shaft 703, and a torsion spring (not shown in the figure) is sleeved on the outer surface of the short shaft 703. The torsion spring makes the side plate 701 tend to deflect based on the short shaft 703, so that the bottom of the side plate 701 fits with the pressing block 502. At this time, a V - shape is formed on the relative surfaces of the side plate 701 and the pressing block 502, and the surface of the side plate 701 away from the pressing block 502 forms a hypotenuse.

[0045] In the above structure, the side plate 701 corresponds to and is dimensionally adapted to the vertical groove 8. A long hole 705 for avoiding the tapping module 6 is formed through the surface of the side plate 701. The side plate 701 can stably contact the front / rear inner wall of the workpiece, and when the tapping module 6 processes the workpiece, even if it penetrates the workpiece, it will enter the long hole 705.

[0046] During use, through structures such as the support frame 1, the feeding frame 2, and the pressing block 502, the pressing block 502 can be driven to move to both press the workpiece and position the workpiece at the center of the feeding groove 4 in the left-right direction; through structures such as the pressing block 502, the vertical groove 8, and the support frame 1, the two pushing blocks 7 can be made to contact the front and rear inner walls of the workpiece to achieve the positioning and centering of the workpiece in the front-rear direction. The working process and effect of this part are the same as those in the second embodiment and will not be repeated here. The difference is that when the pressing block 502 drives the support rod 702 and the side plate 701 to move, due to the second spring 704 driving the support rod 702 to extend from the pressing block 502, the two side plates 701 can stably contact the front and rear inner walls of the workpiece, thereby achieving the positioning and centering of the workpiece in the front-rear direction along the support frame 1, and the long hole 705 can also achieve stable avoidance of the tapping module 6 during tapping operation.

[0047] Compared with the second embodiment, through the cooperation of structures such as the pressing block 502, the support rod 702, the side plate 701, and the long hole 705, the two side plates 701 can be driven to contact the front and rear inner walls of the workpiece to achieve the positioning and centering of the workpiece in the front-rear direction along the support frame 1. At the same time, in combination with the long hole 705, effective avoidance of the tapping module 6 during processing can be achieved, ensuring the stable progress of the overall tapping. The overall solution is combined with the setting of the pushing block 7. Because the second spring 704 drives the support rod 702 to extend from the pressing block 502, the side plate 701 has a large inclination angle in the initial state. Even if the pressing block 502 moves into the avoidance groove 102 along with the base 501, stable contact between the side plate 701 and the inner wall of the workpiece can be ensured, and the applicable range for different sizes of workpieces is further increased, making it more applicable.

Claims

1. A feeding device for tapping of automotive bolts, comprising a support frame, a feeding frame and a driving module for driving the feeding frame. A plurality of material placing grooves for placing workpieces are formed in the top of the support frame, and it is characterized in that The top surface of the feeding rack is flush with the bottom surface of the material placing groove. An adjusting component corresponding to the position of one column of material placing grooves is jointly arranged between the feeding rack and the supporting rack, and the adjusting component is vertically corresponding to the center line of the column of material placing grooves along the length direction of the supporting rack; when the driving module drives the feeding rack to descend again based on the initial position, the adjusting component descends synchronously with the feeding rack, and the adjusting component can slide in the direction close to the supporting rack.

2. The feeding device for tapping the automotive bolts according to claim 1, characterized in that, The adjusting component includes a base slidably matched with the feeding rack and a slider slidably matched with the supporting rack. A pressing block corresponding to the material placing groove up and down is fixedly installed on the surface of the base. A first spring is jointly fixedly installed between the base and the feeding rack, and a traction rope is jointly fixedly connected between the base and the slider.

3. The feeding device for tapping of automotive bolts according to claim 2, characterized in that, Two symmetrically designed inclined sides are arranged at the bottom of the pressing block, and the intersection of the two inclined sides is vertically corresponding to the center line of the corresponding material placing groove along the length direction of the supporting rack.

4. The feeding device for tapping of automotive bolts according to claim 2, characterized in that, A groove for the base to slide is formed at the top of the feeding rack. The base slides back and forth relative to the feeding rack based on the chute, and through holes are formed on the surface of the feeding rack to avoid the back-and-forth sliding of the base.

5. The feeding device for tapping of automotive bolts according to claim 2, characterized in that, The slider reciprocally slides along the length direction of the supporting rack. A chute for the slider to slide is formed on the surface of the feeding rack, and the slider slides up and down relative to the feeding rack based on the chute.

6. The feeding device for tapping of automotive bolts according to claim 2, characterized in that, The traction rope passes through the inside of the feeding rack. When the feeding rack ascends, the traction rope can be pulled to make the base move away from the supporting rack based on the feeding rack. When the feeding rack descends, the traction rope can be released to make the base move close to the supporting rack based on the feeding rack.

7. The feeding device for tapping automotive bolts according to any one of claims 2-6, characterized in that, Inner lining platforms are formed by inward protrusions on the front and rear inner walls of the supporting rack, and the inner lining platforms are in front-and-rear correspondence with the base. An avoidance groove for the base to move is jointly formed between the supporting rack and the inner lining platform.

8. The feeding device for tapping automotive bolts according to claim 7, characterized in that, The bottom of the avoidance groove is lower than the bottom of the base, so that there is a distance between their bottoms when the base slides into the avoidance groove.

9. The feeding device for tapping automotive bolts according to claim 7, wherein Push blocks are fixedly installed on the opposite sides of the two pressing blocks. The surface of the push block far from the pressing block is provided with an inclined side, and the inclined sides of the two push blocks are in an inverted V shape.

10. The feeding device for tapping automotive bolts according to claim 9, characterized in that, Vertical grooves are jointly formed on the supporting rack and the feeding rack. The vertical grooves are vertically corresponding to the push blocks and have matching dimensions.

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