A screwing device applied to deep-hole screw locking

Abstract

The present invention belongs to the technical field of deep-hole screw locking, and particularly relates to a locking device applied to deep-hole screw locking, which includes two gantry frames. A first electric track is slidably installed between the tops of the two gantry frames in the front-rear direction, and a second electric track is slidably installed on the front side of the first electric track in the left-right direction. When the locking device proposed by the present invention is in use, the clamping device can clamp the screws inserted into the feeding pipe. Subsequently, the clamping assembly can drive the screws to move downward and cooperate with the feeding pipe to keep the screws vertical. Then, the picking cylinder can move the vertical screws to the bottom of the positioning hole. Finally, as the upper and lower cylinder moves upward, the screws can pass through the positioning hole and be accurately installed at the bottom of the electric screwdriver. After ensuring that the screws are firmly installed, the clamping assembly automatically resets. Compared with the existing locking devices, the present invention improves the production efficiency and reduces the product defect rate on the premise of ensuring that the screws are not crooked or dropped.

Description

Technical Field

[0001] The present invention belongs to the technical field of deep-hole screw locking, and particularly relates to a locking device applied to deep-hole screw locking. Background Art

[0002] On the assembly production line of an air conditioner electronic control box, after the PCB board is installed in the plastic shell, a screwdriver is required to fix the PCB board and the plastic shell together with screws, and then the PCB board and the plastic shell are installed on the radiator at the same time (the PCB board has high-power and high-heat-generating components that need to dissipate heat).

[0003] When the existing screwdriver uses screws to lock and fix the PCB board and the plastic shell, since the traditional screwdriver directly supplies the screws to the locking device (electric screwdriver), and the existing screwdriver lacks a suitable positioning device, it is impossible to ensure that the screws are not crooked or dropped when supplying the screws to the locking device. Therefore, it is very difficult to meet the production requirements when using a traditional electric screwdriver to lock screws while ensuring that the screws are tightly locked and not crooked to affect the heat dissipation effect.

[0004] Therefore, it is necessary to invent a locking device applied to deep-hole screw locking to solve the above problems. Summary of the Invention

[0005] In view of the above problems, the present invention provides a locking device applied to deep-hole screw locking to solve the problems raised in the above background art.

[0006] To achieve the above object, the present invention provides the following technical solutions:

[0007] A locking device applied to deep-hole screw locking includes two gantry frames. A first electric track is slidably installed between the tops of the two gantry frames in the front-rear direction. A second electric track is slidably installed on the front side of the first electric track in the left-right direction. A first mounting plate is slidably installed on the front side of the second electric track in the vertical direction. An electric screwdriver is installed on the front side of the first mounting plate, and the bit of the electric screwdriver faces downward. A vertical cylinder is arranged on one side of the bottom of the electric screwdriver and is fixedly connected to the first mounting plate. The bottom end of the vertical cylinder is horizontally and fixedly connected to a connecting plate. A pick-up cylinder is installed on the bottom of the connecting plate. A second mounting plate in an L shape is installed on the side of the pick-up cylinder close to the electric screwdriver, and a notch is formed through the middle part of the horizontal section of the second mounting plate. A clamping assembly is installed on the top of the second mounting plate. A vertical feeding pipe is arranged on the top of the pick-up cylinder and is installed on the front side of the first mounting plate. A positioning plate is arranged on the top of the clamping assembly and is fixedly connected to the front side of the first mounting plate. A positioning hole is formed through the positioning plate, and the positioning hole is located directly below the electric screwdriver. A screw to be installed is inserted through the positioning hole.

[0008] The locking plate is provided on one side of the second support bracket, and the locking plate is provided on the other side of the second support bracket, and the locking plate is fixedly mounted on the second support bracket.

[0009] Furthermore, the connecting assembly includes a connecting rod, which is vertically fixedly connected to the side of the slider away from the clamping block. The connecting rods in the two connecting assemblies are vertically slidably inserted into the free end of the push rod and the front side of the mounting block respectively. A second return spring is fixedly connected between the end of the connecting rod away from the slider and the inside of the push rod or the inside of the mounting block.

[0010] Furthermore, two positioning rods are horizontally arranged on one side of the U-shaped plate close to the material taking cylinder, one end of the positioning rod is fixedly connected to the U-shaped plate close to the mounting block, and the other end of the positioning rod vertically slides through and is inserted into the U-shaped plate close to the clamping cylinder.

[0011] Furthermore, a pull rope is connected to the bottom of the U-shaped plate, and a strip-shaped limit hole and a threading hole are respectively opened at the position opposite to the two pull ropes in the horizontal section of the second mounting plate. The limit hole is located at the bottom of the U-shaped plate close to the clamping cylinder, and the limit hole and the push rod are located in the same vertical plane. The width of the limit hole matches the inner diameter of the threading hole, and the two pull ropes are respectively inserted into the limit hole and the threading hole. The bottom end of the pull rope is connected to a conical counterweight block, and the weight of the counterweight block matches the weight of the U-shaped plate and the clamping block.

[0012] Furthermore, a coaxial annular protrusion is fixedly connected to the bottom edge of the positioning hole, and the inner edge of the bottom end of the annular protrusion is tapered.

[0013] Furthermore, a limiting sleeve is fixedly sleeved on the screw, the diameter of the limiting sleeve matches the inner diameter of the feed pipe and the positioning hole, and the top end of the limiting sleeve is a cone.

[0014] Further, one side of the bayonet of the clamping block is made of hard rubber, and horizontal anti-slip lines are evenly arranged on the inner walls on both sides of the bayonet.

[0015] Technical effects and advantages of the present invention:

[0016] 1. When the locking device proposed by the present invention is in use, the clamping device can clamp the screw inserted into the feeding pipe. Subsequently, the clamping assembly can drive the screw to move downward, and cooperate with the feeding pipe to keep the screw vertical. Then, the picking cylinder can move the vertical screw to the bottom of the positioning hole. Finally, as the upper and lower cylinders move upward, the screw can pass through the positioning hole and be accurately installed at the bottom of the electric screwdriver. After ensuring that the screw is firmly installed, the clamping assembly automatically resets. Compared with the existing locking devices, the present invention improves the production efficiency and reduces the product defect rate on the premise of ensuring that the screw is not crooked or dropped.

[0017] 2. During the process of the screw passing through the positioning hole from bottom to top, when the limiting sleeve is not coaxial with the screw, the top edge of the limiting sleeve will contact the conical surface of the bottom edge of the annular protrusion. At this time, the conical surface of the bottom edge of the annular protrusion can exert a thrust on the limiting sleeve towards the axis of the positioning hole, so that the limiting sleeve can be coaxial with the positioning hole under the action of this thrust. During the movement of the limiting sleeve, the second return spring and the first return spring can be adaptively stretched or compressed as the clamping block moves horizontally in any direction, so as to meet the moving requirements of the limiting sleeve and the clamping block in any horizontal direction, and then ensure that the screw can be smoothly inserted into the positioning hole and installed on the bottom bit of the electric screwdriver. Description of the drawings

[0018] Figure 1 is a partial structural schematic diagram of the gantry, the first electric track, the second electric track and the locking device of the present invention;

[0019] Figure 2 is a three-dimensional schematic diagram of the first mounting plate, the electric screwdriver, the upper and lower cylinders, the picking cylinder and other structures of the present invention;

[0020] Figure 3 is a three-dimensional schematic diagram of the picking cylinder, the second mounting plate, the clamping assembly, the screw and the limiting sleeve of the present invention;

[0021] Figure 4 is a three-dimensional schematic diagram of a part of the clamping assembly, the pulling rope and the counterweight of the present invention;

[0022] Figure 5 is a three-dimensional schematic diagram of the connecting assembly, the clamping assembly and the positioning rod of the present invention;

[0023] Figure 6 is a three-dimensional schematic diagram of the connecting assembly and a part of the clamping assembly of the present invention;

[0024] Figure 7 It is a three-dimensional schematic diagram of the positioning plate and the annular protrusion in the present invention.

[0025] In the figure: 1, gantry; 2, first electric track; 3, second electric track; 4, first mounting plate; 5, electric screwdriver; 6, up and down cylinder; 7, connecting plate; 8, material taking cylinder; 9, second mounting plate; 10, clamping assembly; 101, clamping cylinder; 102, push rod; 103, mounting block; 104, clamping block; 105, U-shaped plate; 106, convex block; 107, slider; 108, limiting rod; 109, first return spring; 11, feeding pipe; 12, positioning plate; 13, positioning hole; 14, screw; 15, connecting assembly; 151, connecting rod; 152, second return spring; 16, positioning rod; 17, pulling rope; 18, limiting hole; 19, wire threading hole; 20, counterweight; 21, annular protrusion; 22, limiting sleeve. Specific embodiments

[0026] To make the objectives, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below in conjunction with the embodiments.

[0027] The present invention provides a screwing device applied to deep-hole screwing as shown in Figures 1 to 7 which includes two gantries 1. A first electric track 2 is slidably installed between the tops of the two gantries 1 in the front-rear direction. A second electric track 3 is slidably installed on the front side of the first electric track 2 in the left-right direction. A first mounting plate 4 is slidably installed on the front side of the second electric track 3 in the vertical direction. An electric screwdriver 5 is installed on the front side of the first mounting plate 4, and the bit of the electric screwdriver 5 faces downward. A up and down cylinder 6 is arranged on one side of the bottom of the electric screwdriver 5. The up and down cylinder 6 is fixedly connected to the first mounting plate 4. The bottom end of the up and down cylinder 6 is horizontally and fixedly connected with a connecting plate 7. A material taking cylinder 8 is installed at the bottom of the connecting plate 7. An L-shaped second mounting plate 9 is installed on the side of the material taking cylinder 8 close to the electric screwdriver 5, and a notch is formed through the middle part of the horizontal section of the second mounting plate 9. A clamping assembly 10 is installed on the top of the second mounting plate 9. A vertical feeding pipe 11 is arranged on the top of the material taking cylinder 8. The feeding pipe 11 is installed on the front side of the first mounting plate 4. A positioning plate 12 is arranged on the top of the clamping assembly 10. The positioning plate 12 is fixedly connected to the front side of the first mounting plate 4. A positioning hole 13 is formed through the positioning plate 12, and the positioning hole 13 is located directly below the electric screwdriver 5. A screw 14 to be installed is inserted through the positioning hole 13. A limiting sleeve 22 is fixedly sleeved on the screw 14. The diameter of the limiting sleeve 22 is matched with the inner diameters of the feeding pipe 11 and the positioning hole 13, and the top end of the limiting sleeve 22 is conical;

[0028] When the present invention is in use, the PCB board with a plastic shell flows to a designated position through a production line. Subsequently, the stopper on the production line can automatically stop the product fixture to be locked. Then, the screw 14 machine can automatically insert a screw 14 into the feeding pipe 11 and partially insert the screw 14 into the limiting sleeve 22. Subsequently, the clamping assembly 10 on the second mounting plate 9 can automatically clamp the screw 14 from the bottom position of the feeding pipe 11. Then, the upper and lower cylinders 6 can drive the pick-up cylinder 8 together with the clamping assembly 10 and the screw 14 to move downward through the connecting plate 7, so that the screw 14 can be removed from the bottom end of the feeding pipe 11. During the process of the screw 14 moving downward out of the feeding pipe 11, since the diameter of the limiting sleeve 22 matches the inner diameter of the feeding pipe 11, the screw 14 remains in a vertical state under the combined restraint of the limiting sleeve 22 and the feeding pipe 11. When the top end of the screw 14 completely moves out of the bottom end of the feeding pipe 11, the pick-up cylinder 8 can extend, driving the clamping assembly 10 together with the screw 14 to move towards the bottom of the positioning plate 12. When the screw 14 moves to a position directly opposite the positioning hole 13, the upper and lower cylinders 6 can gradually shorten, driving the pick-up cylinder 8, the clamping assembly 10, and the screw 14 to move upward. During this process, the screw 14 can gradually pass through the positioning hole 13 from the bottom, so that the screw 14 can be accurately inserted into the bottom bit of the electric screwdriver 5 under the restraint and guiding action of the positioning hole 13. When the screw 14 is clamped by the bit of the electric screwdriver 5, the clamping assembly 10 can automatically loosen. Subsequently, as the pick-up cylinder 8 gradually shortens, the clamping assembly 10 can return to its original position, thus preparing for the next pick-up of the screw 14;

[0029] After the screw 14 is clamped by the bit of the electric screwdriver 5, the electric screwdriver 5 can lock the screw 14 into the corresponding screw hole on the PCB board according to the set coordinate position under the combined action of the first electric track 2 and the second electric track 3. After the electric screwdriver 5 completes the locking operation of the screw 14, the electric screwdriver 5 can return to the origin position under the combined action of the first electric track 2 and the second electric track 3, thus entering the next round of screw 14 locking work. Compared with the existing locking device, the present invention improves the production efficiency and reduces the product defect rate on the premise of ensuring that the screw 14 does not skew or fall off.

[0030] As Figures 3 to 6As shown, the clamping assembly 10 includes a clamping cylinder 101 which is fixedly installed on the top of the second mounting plate 9. The rear end of the clamping cylinder 101 is drivingly connected to a push rod 102. There is a mounting block 103 behind the push rod 102. The mounting block 103 is fixedly connected to the horizontal section of the second mounting plate 9. Clamping blocks 104 are symmetrically arranged on the rear end of the push rod 102 and the front side of the mounting block 103. V-shaped clamping openings are formed on the side of the two clamping blocks 104 facing each other. U-shaped plates 105 are arranged on the side of the two clamping blocks 104 away from each other. And the clamping blocks 104 are detachably installed inside the opening of the U-shaped plates 105. Convex blocks 106 are fixedly connected to the side of the two U-shaped plates 105 away from each other. An installation groove is horizontally installed on the side of the convex block 106 away from the U-shaped plate 105. A slider 107 is slidably installed in the installation groove. A limiting rod 108 is slidably inserted through the two sides of the slider 107. The two ends of the limiting rod 108 are respectively fixedly connected to the inner walls of both sides of the installation groove. First return springs 109 are sleeved on the positions of the limiting rod 108 close to both ends. The two ends of the first return spring 109 are respectively fixedly connected to the slider 107 and the side wall of the installation groove. A connection assembly 15 is arranged on the side of the slider 107 away from the clamping block 104;

[0031] The connection assembly 15 includes a connecting rod 151 which is vertically and fixedly connected to the side of the slider 107 away from the clamping block 104. The connecting rods 151 in the two connection assemblies 15 are respectively vertically and slidably inserted into the free end of the push rod 102 and the front side of the mounting block 103. A second return spring 152 is fixedly connected between the end of the connecting rod 151 away from the slider 107 and the inside of the push rod 102 or the inside of the mounting block 103. A ring-shaped protrusion 21 coaxial with it is fixedly connected to the bottom edge of the positioning hole 13. And the inner edge of the bottom end of the ring-shaped protrusion 21 is conical;

[0032] When clamping the screw 14, as the screw 14 is inserted into the feeding pipe 11, the limiting sleeve 22 part of the screw 14 can be located in the clamping opening of the clamping block 104 close to the mounting block 103 and keep in contact with the clamping opening. Subsequently, as the clamping cylinder 101 drives the clamping block 104 connected to the push rod 102 to move towards another clamping block 104, when this clamping block 104 contacts the limiting sleeve 22 part of the screw 14, the screw 14 can be clamped and fixed under the combined action of the two clamping blocks 104. Subsequently, the upper and lower cylinder 6 can drive the pick-up cylinder 8 together with the clamping assembly 10 and the screw 14 to move downward through the connecting plate 7, so that the screw 14 can be removed from the bottom end of the feeding pipe 11. When the screw 14 moves to the bottom position of the positioning hole 13 driven by the pick-up cylinder 8, as the upper and lower cylinder 6 shortens, the top end of the screw 14 can gradually approach the positioning hole 13. However, due to possible differences in the shape of the limiting sleeve 22, the limiting sleeve 22 may be non-coaxial with the screw 14. Thus, when the limiting sleeve 22 of the screw 14 passes through the positioning hole 13 from bottom to top, the edge of the limiting sleeve 22 may rub against the edge of the positioning hole 13, and then the screw 14 may be blocked by the bottom edge of the positioning hole 13 and cannot pass through the positioning hole 13 smoothly and be installed on the electric screwdriver 5. At this time, due to the existence of the first return spring 109 and the second return spring 152, when the top edge of the limiting sleeve 22 contacts the conical surface of the bottom edge of the annular protrusion 21, the conical surface of the bottom edge of the annular protrusion 21 can exert a thrust on the limiting sleeve 22 towards the axis of the positioning hole 13, so that the limiting sleeve 22 can be coaxial with the positioning hole 13 under the action of this thrust. During the movement of the limiting sleeve 22, the two clamping blocks 104 can move together with the limiting sleeve 22. During this process, as the clamping block 104 moves in any horizontal direction, the two connecting rods 151 can adaptively move in the front-back direction, so that the corresponding second return spring 152 can be stretched or compressed adaptively. At the same time, the first return spring 109 on the limiting rod 108 can also be stretched or compressed adaptively by the slider 107 as the clamping block 104 moves in the two-side direction, so as to meet the movement requirements of the limiting sleeve 22 and the clamping block 104 in any horizontal direction, and then ensure that the screw 14 can be smoothly inserted into the positioning hole 13 and installed on the bottom bit of the electric screwdriver 5.

[0033] As Figure 4 and Figure 5 shown, two positioning rods 16 are horizontally arranged on one side of the U-shaped plate 105 close to the pick-up cylinder 8. One end of the positioning rod 16 is fixedly connected to the U-shaped plate 105 close to the mounting block 103, and the other end of the positioning rod 16 vertically slides through and is inserted into the U-shaped plate 105 close to the clamping cylinder 101;

[0034] By providing the positioning rod 16, since the two clamping blocks 104 will compress the first return springs 109 in the corresponding bumps 106 during the movement along the two sides, and there are differences in each first return spring 109 itself, therefore, under the action of the same pressure or tensile force, different first return springs 109 will produce different deformations. Over time, the center line between the chucks of the two clamping blocks 104 may deviate, thus affecting the accuracy of clamping the screw 14 subsequently. At this time, by providing the positioning rod 16, the two positioning rods 16 can limit the movement of the two clamping blocks 104 along the two sides, so as to ensure that the center line between the chucks of the two clamping blocks 104 is always in the same vertical plane, and further ensure the accuracy of clamping the screw 14 by the two clamping blocks 104.

[0035] As Figures 3 to 4 shown, a pull rope 17 is connected to the bottom of the U-shaped plate 105. Strip-shaped limiting holes 18 and wire passing holes 19 are respectively formed at positions on the horizontal section of the second mounting plate 9 opposite to the two pull ropes 17. The limiting hole 18 is located at the bottom of the U-shaped plate 105 close to the clamping cylinder 101, and the limiting hole 18 and the push rod 102 are in the same vertical plane. The width of the limiting hole 18 matches the inner diameter of the wire passing hole 19, and the two pull ropes 17 are respectively inserted through the limiting hole 18 and the wire passing hole 19. The bottom end of the pull rope 17 is connected with a conical counterweight 20, and the weight of the counterweight 20 matches the weights of the U-shaped plate 105 and the clamping block 104.

[0036] By providing the pull rope 17, when the U-shaped plate 105 connected to the push rod 102 drives the clamping block 104 to move towards the other clamping block 104, the U-shaped plate 105 can drive the corresponding counterweight 20 to approach the other clamping block 104 along the limiting hole 18 through the pull rope 17, and finally realize the clamping and fixing operation of the screw 14 through the mutual cooperation of the two clamping blocks 104. Subsequently, as the two clamping blocks 104 drive the screw 14 to move upward, when the screw 14 drives the clamping block 104 and the U-shaped plate 105 to move due to contact with the bottom cone surface of the annular protrusion 21, the counterweight 20 can always generate a vertically downward pulling force on the U-shaped plate 105 through the pull rope 17. Therefore, after the clamping block 104 completes the clamping operation on the screw 14, as the clamping block 104 separates from the screw 14, the clamping block 104 is no longer restricted by the screw 14. Subsequently, the U-shaped block can quickly reset under the pulling forces of the first return spring 109 and the counterweight 20.

[0037] At the same time, it can also prevent the first return spring 109 from being deformed due to frequent stretching or compression, and finally avoid the occurrence of the phenomenon that the U-shaped plate 105 and the clamping block 104 cannot be fully reset.

[0038] As Figures 3 to 5As shown, one side of the bayonet of the clamping block 104 is made of hard rubber, and horizontal anti-slip lines are evenly arranged on the inner walls on both sides of the bayonet;

[0039] When the rubber clamping block 104 clamps the screw 14, the clamping block 104 can protect the screw 14, and at the same time, the anti-slip lines on the inner side of the bayonet can improve the stability when clamping the screw 14.

[0040] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than limiting it.

Claims

1. A screwing device applied to deep-hole screw locking, comprising two gantry frames (1), characterized in that: A first electric rail (2) is slidably installed in the front-back direction between the tops of two gantry frames (1). A second electric rail (3) is slidably installed in the left-right direction on the front side of the first electric rail (2). A first mounting plate (4) is slidably installed in the vertical direction on the front side of the second electric rail (3). An electric screwdriver (5) is installed on the front side of the first mounting plate (4), and the bit of the electric screwdriver (5) faces downward. A vertical cylinder (6) is provided on one side of the bottom of the electric screwdriver (5), and the vertical cylinder (6) is fixedly connected to the first mounting plate (4). The bottom end of the vertical cylinder (6) is horizontally and fixedly connected to a connecting plate (7). A pick-up cylinder (8) is installed at the bottom of the connecting plate (7). An L-shaped second mounting plate (9) is installed on the side of the pick-up cylinder (8) close to the electric screwdriver (5), and a notch is formed through the middle part of the horizontal section of the second mounting plate (9). A clamping assembly (10) is installed on the top of the second mounting plate (9). A vertical feeding pipe (11) is provided on the top of the pick-up cylinder (8), and the feeding pipe (11) is installed on the front side of the first mounting plate (4). A positioning plate (12) is provided on the top of the clamping assembly (10), and the positioning plate (12) is fixedly connected to the front side of the first mounting plate (4). A positioning hole (13) is formed through the positioning plate (12), and the positioning hole (13) is located directly below the electric screwdriver (5). A screw (14) to be installed is inserted through the positioning hole (13). A ring-shaped protrusion (21) coaxial with it is fixedly connected to the bottom edge of the positioning hole (13), and the inner bottom edge of the ring-shaped protrusion (21) is conical. A limiting sleeve (22) is fixedly sleeved on the screw (14). The diameter of the limiting sleeve (22) is matched with the inner diameters of the feeding pipe (11) and the positioning hole (13), and the top end of the limiting sleeve (22) is conical. The clamping assembly (10) can automatically clamp the screw (14) from the bottom end position of the feeding pipe (11). Then, the vertical cylinder (6) drives the pick-up cylinder (8) together with the clamping assembly (10) and the screw (14) to move downward, so that the screw (14) moves out from the bottom end of the feeding pipe (11). When the screw (14) moves downward out of the feeding pipe (11), since the diameter of the limiting sleeve (22) is matched with the inner diameter of the feeding pipe (11), the screw (14) remains in a vertical state under the cooperation of the limiting sleeve (22) and the feeding pipe (11). And when the screw (14) moves to the bottom position of the positioning hole (13) driven by the pick-up cylinder (8), as the vertical cylinder (6) shortens, the top end of the screw (14) can gradually approach the positioning hole (13). And when the top edge of the limiting sleeve (22) contacts the conical surface of the bottom edge of the ring-shaped protrusion (21), the conical surface of the bottom edge of the ring-shaped protrusion (21) exerts a thrust on the limiting sleeve (22) towards the axis of the positioning hole (13), so that the limiting sleeve (22) can be coaxial with the positioning hole (13) under the action of this thrust. Subsequently, the screw (14) gradually passes through the positioning hole (13) from the bottom, so that the screw (14) is accurately inserted into the bottom bit of the electric screwdriver (5) under the limiting and guiding action of the positioning hole (13).

2. The screwing device applied to deep-hole screw locking according to claim 1, characterized in that: The clamping assembly (10) includes a clamping cylinder (101). The clamping cylinder (101) is fixedly installed on the top of the second mounting plate (9). The rear end of the clamping cylinder (101) is drivingly connected to a push rod (102). There is a mounting block (103) on the rear side of the push rod (102). The mounting block (103) is fixedly connected to the horizontal section of the second mounting plate (9). Clamping blocks (104) are symmetrically arranged on the rear end of the push rod (102) and the front side of the mounting block (103). V-shaped clamping openings are formed on the side of the two clamping blocks (104) facing each other. U-shaped plates (105) are arranged on the side of the two clamping blocks (104) away from each other. And the clamping block (104) is detachably installed inside the opening of the U-shaped plate (105). Convex blocks (106) are fixedly connected to the side of the two U-shaped plates (105) away from each other. An installation groove is horizontally installed on the side of the convex block (106) away from the U-shaped plate (105). A slider (107) is slidably installed in the installation groove. A limiting rod (108) is slidably inserted through the middle between the two sides of the slider (107). The two ends of the limiting rod (108) are respectively fixedly connected to the inner walls of both sides of the installation groove. First return springs (109) are sleeved at positions near both ends of the limiting rod (108). The two ends of the first return spring (109) are respectively fixedly connected to the slider (107) and the side wall of the installation groove. A connection assembly (15) is arranged on the side of the slider (107) away from the clamping block (104).

3. The screwing device applied to deep-hole screw locking according to claim 2, wherein: The connection assembly (15) includes a connecting rod (151). The connecting rod (151) is vertically and fixedly connected to the side of the slider (107) away from the clamping block (104). The connecting rods (151) in the two connection assemblies (15) are respectively vertically and slidably inserted into the free end of the push rod (102) and the front side of the mounting block (103). A second return spring (152) is fixedly connected between the end of the connecting rod (151) away from the slider (107) and the inside of the push rod (102) or the inside of the mounting block (103).

4. The screwing device applied to deep-hole screw locking according to claim 3, characterized in that: Two positioning rods (16) are horizontally arranged on the side of the U-shaped plate (105) close to the material taking cylinder (8). One end of the positioning rod (16) is fixedly connected to the U-shaped plate (105) close to the mounting block (103). The other end of the positioning rod (16) is vertically and slidably inserted through the U-shaped plate (105) close to the clamping cylinder (101).

5. The screwing device applied to deep-hole screw locking according to claim 4, characterized in that: A pull rope (17) is connected to the bottom of the U-shaped plate (105). Bar-shaped limiting holes (18) and wire passing holes (19) are respectively formed in the horizontal section of the second mounting plate (9) opposite to the two pull ropes (17). The limiting hole (18) is located at the bottom of the U-shaped plate (105) close to the clamping cylinder (101), and the limiting hole (18) and the push rod (102) are in the same vertical plane. The width of the limiting hole (18) matches the inner diameter of the wire passing hole (19). And the two pull ropes (17) are respectively inserted through the limiting hole (18) and the wire passing hole (19). A conical counterweight (20) is connected to the bottom end of the pull rope (17). And the weight of the counterweight (20) matches the weight of the U-shaped plate (105) and the clamping block (104).

6. The screwing device applied to deep-hole screw locking according to claim 5, characterized in that: The clamping block (104) is made of hard rubber on the side of the bayonet, and horizontal anti-slip lines are evenly arranged on the inner walls on both sides of the bayonet.

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