Welding device for GNSS equipment protection fence rods

Abstract

The present invention provides a welding device for GNSS equipment protection fence rods, which relates to the technical field of welding devices. The welding device body includes a base, a welding assembly and a positioning and pushing mechanism. The rear end of the base is integrally formed with a back plate, and the surface of the back plate is integrally formed with a welding assembly. The surface of the welding assembly is sleeved with a transfer channel, and the end of the transfer channel is screwed with a motor, and a lead screw is inserted into the output end of the motor. A vertical rod insertion hole is provided at the bottom of the surface of the back plate, and a horizontal rod positioning groove is provided on the surface of the base. A vertical rod positioning column is welded at the edge of the surface of the base. The welding device for GNSS equipment protection fence rods can quickly position and push the spacing between each vertical rod, and reduce damage to the vertical rods that have been welded during the pushing process. It can quickly switch the welding straight line area of ​​the welding joint, and the accuracy of the welding straight line positioning is higher, and the protection effect of the welding joint is enhanced.

Description

Technical Field

[0001] The present invention relates to the technical field of welding devices, and in particular to a welding device for GNSS equipment protection fence rods. Background Art

[0002] The main function of the GNSS equipment protection fence is to protect the GNSS equipment from external interference and damage, ensure its normal and stable operation, and thus provide accurate positioning and navigation services. The fence can prevent human damage or accidental collisions, protect the physical integrity of the GNSS equipment, and by restricting the access of unauthorized personnel, the protection fence helps to improve the security of GNSS equipment and prevent information from being illegally obtained or equipment from being maliciously damaged.

[0003] In the prior art, the welding device for protecting fence rods needs to weld and fix multiple vertical rods to multiple horizontal rods at the same time, so the spacing between each vertical rod needs to be kept consistent. This process requires frequent positioning processing, which prolongs the processing flow. In addition, it is necessary to weld both sides of each vertical rod during welding. Therefore, the welding head needs to be moved to different linear ranges for mobile welding. The movement frequency of the welding head is high, and the movement accuracy requirements of the welding head are also high, which can easily cause collision damage to the welding head. Summary of the invention

[0004] In view of the shortcomings of the prior art, the purpose of the present invention is to provide a welding device for GNSS equipment protection fence rods to solve the problems raised in the above-mentioned background technology. The present invention can quickly locate and push the distance between each vertical rod, and reduce the damage to the welded vertical rods during the pushing process. It can quickly switch the welding straight line area of ​​the welding head, and the welding straight line has higher accuracy.

[0005] In order to achieve the above-mentioned purpose, the present invention is implemented through the following technical scheme: a welding device for GNSS equipment protection fence rods, including a welding device body, the welding device body including a base, a welding assembly and a positioning and pushing mechanism, the rear end of the base is integrally formed with a back plate, the surface of the back plate is integrally formed with a welding assembly, the surface of the welding assembly is sleeved with a transfer channel, the end of the transfer channel is screwed with a motor, the output end of the motor is inserted with a screw, the bottom of the surface of the back plate is provided with a vertical rod insertion hole, the surface of the base is provided with a horizontal rod positioning groove, the surface of the base is welded with a vertical rod positioning column at the edge of the surface of the base, the side of the base is integrally formed with a guide plate, and the side of the base is screwed with an electric telescopic rod, the positioning and pushing mechanism is screwed at the end of the electric telescopic rod, and the positioning and pushing mechanism is used to push the vertical rod that has been welded, and the positioning and pushing mechanism includes a sliding assembly and a one-way pushing assembly.

[0006] Furthermore, a slide groove is provided on the surface of the guide plate, a synchronous locking component is embedded in the slide groove, the synchronous locking component includes a slide plate and an end baffle, and a first rack is integrally formed on the surface of the slide plate.

[0007] Furthermore, the end baffles are welded above the two ends of the skateboard, the skateboard is embedded in the interior of the slide groove as a whole, and the surface of the skateboard is flush with the surface of the guide plate. A gap is set between the two ends of the first rack and the inner side of the end baffles, and at least two synchronous locking components are embedded in the surface of each guide plate.

[0008] Furthermore, the sliding assembly includes a sliding box, the one-way pushing assembly includes a central axis and a lifting block, the bottoms of both ends of the sliding box are integrally formed with lower hanging plates, there are two sliding boxes, and the two sliding boxes are combined and fixed by a connecting rod, and the end of the electric telescopic rod is fixedly connected to the side of one of the sliding boxes.

[0009] Furthermore, a lifting port is provided on the top of the sliding box, and both ends of the central shaft are embedded in the inner wall of the sliding box through bearings. The surface key of the central shaft is connected with end gears, and a long gear is welded between the two end gears.

[0010] Furthermore, a toothed plate is welded to one side of the bottom of the lifting block, the side of the long gear is meshed with the toothed plate, the top of the lifting block passes upward from the inside of the lifting port, the bottom of the end gear is meshed with the surface of the first rack, the side of the sliding box is used to lean against the inner side of the end baffle, the inner side of the lower hanging plate is leaned against the side of the guide plate, and the top surface of the sliding box is below the bottom surface of the welded vertical rod.

[0011] Furthermore, the welding assembly includes a transfer channel, a screw rod, a rotating disk and a welding head. A second rack is welded on one side of the inner wall of the transfer channel. A first magnetic sheet is also embedded at the end of the transfer channel. The end of the screw rod is embedded in the inner wall of the transfer channel through a bearing, and the heights of the two first magnetic sheets are different.

[0012] Furthermore, a threaded sleeve is sleeved on the surface of the screw rod, a pushing sleeve is integrally formed on the side of the threaded sleeve, a linkage shaft is inserted in the middle of the pushing sleeve, the rotating disk is integrally formed at the bottom end of the linkage shaft, a second magnetic sheet is embedded on the side of the rotating disk, and the top of the welding head is fixed under the rotating disk.

[0013] Furthermore, a pressing roller is fixedly installed on the side of the welding head, the number of the pressing rollers is two, and the bottom of each pressing roller is flush with the bottom surface of the welding head, and the second magnetic sheet is used to be adsorbed and fitted with one of the first magnetic sheets.

[0014] Furthermore, the top key of the linkage shaft is connected to a linkage gear, a reset column is welded on the top of the linkage gear, a strip notch is opened on the top of the transfer channel, the reset column passes upward from the strip notch at the top of the transfer channel, and the reset column is used to pull the linkage gear to move up and down along the linkage shaft.

[0015] Beneficial effects of the present invention:

[0016] 1. The welding device for GNSS equipment protection fence rods pushes the vertical rod part that has been welded through the positioning and pushing mechanism, and cooperates with the synchronous locking component at the bottom to ensure that the length of each push of the positioning and pushing mechanism remains consistent. Therefore, after the push is completed, the positioning process can be automatically realized, and there is no need to additionally position the welding position of the subsequent vertical rods, thereby improving the welding processing efficiency.

[0017] 2. When the welding device for GNSS equipment protection fence poles pushes the vertical poles that have been welded, it can simultaneously apply thrust to multiple vertical poles to avoid excessive concentration of thrust points, thereby reducing the disconnection of some welded vertical poles. In addition, the pushing process cooperates with the one-way pushing component to not apply reverse thrust to the vertical poles to move toward the base part when resetting, completely avoiding the collision with the fence part and causing it to be displaced.

[0018] 3. The welding device for GNSS equipment protection fence poles can quickly weld the connection between the vertical pole and the horizontal pole with the help of the welding assembly, and can automatically switch the welding position of the welding joint after moving to the end, so that it can be directly aligned with the unwelded area on the other side of the vertical pole, thereby improving the welding efficiency, realizing the precise positioning of the welding joint, and providing protection for the welding joint. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic structural diagram of the appearance of the welding device for GNSS equipment protection fence rod of the present invention;

[0020] Figure 2 It is a structural schematic diagram of the positioning and pushing mechanism part of the present invention;

[0021] Figure 3 It is a structural schematic diagram of the synchronous locking component part of the present invention;

[0022] Figure 4 The figure is a disassembled view of the sliding assembly part of the present invention;

[0023] Figure 5 It is a structural schematic diagram of the base part of the present invention;

[0024] Figure 6A cross-sectional view of the interior of the transfer channel of the present invention;

[0025] Figure 7 It is a structural schematic diagram of the welding assembly part of the present invention;

[0026] Figure 8 for Figure 1 A magnified image of area A;

[0027] In the figure: 1, base; 2, back plate; 3, welding assembly; 4, positioning and pushing mechanism; 5, guide plate; 6, electric telescopic rod; 7, sliding assembly; 8, synchronous locking assembly; 9, one-way pushing assembly; 10, connecting rod; 11, slide groove; 12, slide plate; 13, first rack; 14, end baffle; 15, sliding box; 16, lower hanging plate; 17, lifting port; 18, central axis; 19, end gear; 20, long gear; 21. Lifting block; 22. Toothed plate; 23. Crossbar positioning groove; 24. Vertical bar positioning column; 25. Vertical bar insertion hole; 26. Motor; 27. Transfer channel; 28. Screw rod; 29. ​​Second rack; 30. Linkage gear; 31. Threaded sleeve; 32. First magnetic sheet; 33. Linkage shaft; 34. Push sleeve; 35. Rotating disk; 36. Welding head; 37. Press roller; 38. Second magnetic sheet; 39. Reset column. DETAILED DESCRIPTION

[0028] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0029] See also Figures 1 to 8 The present invention provides the following technical solutions: a welding device for GNSS equipment protection fence rods, comprising a welding device body, the welding device body comprising a base 1, a welding assembly 3 and a positioning and pushing mechanism 4, the rear end of the base 1 is integrally formed with a back plate 2, the surface of the back plate 2 is integrally formed with a welding assembly 3, the surface of the welding assembly 3 is sleeved with a transfer channel 27, the end of the transfer channel 27 is screwed with a motor 26, the output end of the motor 26 is inserted with a screw 28, the bottom of the surface of the back plate 2 is provided with a vertical rod insertion hole 25, the surface of the base 1 is provided with a horizontal rod positioning groove 23, the surface of the base 1 is welded with a vertical rod positioning column 24 at the edge of the surface of the base 1, the side of the base 1 is integrally formed with a guide plate 5, and the side of the base 1 is screwed with an electric telescopic rod 6, the positioning and pushing mechanism 4 is screwed at the end of the electric telescopic rod 6, and the positioning and pushing mechanism 4 is used to push the vertical rod that has been welded, and the positioning and pushing mechanism 4 includes a sliding assembly 7 and a one-way pushing assembly 9. The welding device is used for welding GNSS equipment protection fence rods, and can weld and fix the vertical rods on the fence rods in sequence along the longer cross rods.

[0030] When the present invention is used, a plurality of cross bars are first embedded into the cross bar positioning grooves 23 on the base 1. In this embodiment, two cross bar positioning grooves 23 are provided, so each vertical bar will be welded and fixed to the surfaces of the two cross bars later. After the placement of the cross bars is completed, each vertical bar is sequentially embedded into the surface of the base 1 from the vertical bar insertion holes 25 on the back plate 2, and placed on the surface of the cross bars. At this time, the top welding assembly 3 can be started, and the push sleeve 34 at the end and the welding head 36 at the bottom are driven to move by means of the motor 26 and the screw 28. The welding head 36 is moved along the gap where one side of the vertical bar contacts the cross bar to realize the alignment of the cross bars. , the welding process at the intersection of the vertical rods, until the welding head 36 is moved to the end, the welding head 36 at the bottom is automatically controlled to rotate 180° with the help of the linkage gear 30 and the second rack 29, and the reset column 39 is manually pressed, and the motor 26 is started in reverse again, and the welding head 36 that has switched position can be moved along the other side of the vertical rod to achieve the welding process on the other side. After completing the welding of the vertical rod, the vertical rod part that has been welded is pushed with the help of the positioning and pushing mechanism 4, and the entire cross bar can be pulled, and the pushing can be stopped after pulling a fixed distance, and the subsequent welding process can be carried out at this position.

[0031] In this embodiment, a slide groove 11 is provided on the surface of the guide plate 5, and a synchronous locking assembly 8 is embedded inside the slide groove 11. The synchronous locking assembly 8 includes a slide plate 12 and an end baffle 14. The surface of the slide plate 12 is integrally formed with a first rack 13. The end baffle 14 is welded above the two ends of the slide plate 12. The slide plate 12 is integrally embedded in the slide groove 11, and the surface of the slide plate 12 is flush with the surface of the guide plate 5. A gap is provided between the two ends of the first rack 13 and the inner side of the end baffle 14. At least two synchronous locking assemblies 8 are embedded on the surface of each guide plate 5. The positioning push mechanism 4 pushes the vertical rod part that has been welded, and cooperates with the synchronous locking assembly 8 at the bottom to ensure that the length of each push of the positioning push mechanism 4 remains consistent. Therefore, after the push is completed, the positioning process can be automatically realized, and there is no need to perform additional positioning processing on the welding position of the subsequent vertical rod, thereby improving the welding processing efficiency.

[0032] Specifically, by extending the electric telescopic rod 6, the sliding assembly 7 can be directly pulled to move, and when the sliding assembly 7 is moved, the synchronous locking assembly 8 at the bottom is cooperated to move the lifting block 21 upward, and the welded vertical rod can be pushed with the help of the lifting block 21. At the same time, the end baffle 14 will be pushed through the sliding box 15 to drive the entire one-way pushing assembly 9 to move until the end of the one-way pushing assembly 9 is pressed against the end of the slide groove 11, which can be blocked by the sliding end, resulting in the electric telescopic rod 6 being unable to continue to push the sliding box 15 and the lifting block 21. At this time, a fixed pushing distance can be reached. In this state, after the electric telescopic rod 6 is controlled to retract, the entire positioning and pushing mechanism 4 can be pulled to reset until the welding of the next vertical rod is completed. The above process can be repeated to perform pushing and positioning again.

[0033] In this embodiment, the sliding assembly 7 includes a sliding box 15, the one-way pushing assembly 9 includes a central shaft 18 and a lifting block 21, the bottoms of both ends of the sliding box 15 are integrally formed with lower hanging plates 16, the number of the sliding boxes 15 is two, and the two sliding boxes 15 are combined and fixed by a connecting rod 10, and the end of the electric telescopic rod 6 is fixedly connected to the side of one of the sliding boxes 15. A lifting port 17 is opened on the top of the sliding box 15, and the two ends of the central shaft 18 are embedded in the inner wall of the sliding box 15 through bearings, and the surface of the central shaft 18 is keyed to an end gear 19, and a long gear 20 is welded between the two end gears 19. A toothed plate 22 is welded to one side of the bottom of the lifting block 21, the side of the long gear 20 meshes with the toothed plate 22, the top of the lifting block 21 passes upward from the inside of the lifting port 17, the bottom of the end gear 19 meshes with the surface of the first rack 13, the side of the sliding box 15 is used to lean against the inner side of the end baffle 14, the inner side of the lower hanging plate 16 leans against the side of the guide plate 5, and the top surface of the sliding box 15 is below the bottom surface of the welded vertical rod. When pushing the vertical rods that have been welded, thrust can be applied to multiple vertical rods simultaneously to avoid excessive concentration of thrust points, thereby reducing the situation of disconnection of some welded vertical rods, and the pushing process cooperates with the one-way pushing component 9 to prevent the vertical rod from being reversely applied to the vertical rod moving toward the base 1 part when resetting, completely avoiding the collision with the fence part and causing it to displace.

[0034] Specifically, after the welding of a vertical rod is completed, the electric telescopic rod 6 is started to drive the positioning and pushing mechanism 4 to push. At this time, it will move along the guide plate 5 through the sliding assembly 7, and with the help of the meshing of the first rack 13 and the end gear 19, the central axis 18 rotates, and the long gear 20 on the surface drives the toothed plate 22 to move, thereby lifting the top lifting block 21 out from the inside of the lifting port 17. In this state, the lifting block 21 is higher than the height of the welded vertical rod. Therefore, when the subsequent sliding assembly 7 continues to move, the protruding lifting block 21 can be used to push the side of the welded vertical rod. The two sliding assemblies 7 and the one-way pushing assembly 9 realize the above process at the same time, and can push the two vertical rods at the same time. Since the synchronous locking assembly 8 lifts the lifting block 21 with the help of its first rack 13, it will move synchronously with the sliding assembly 7, so the lifting block 21 can always be controlled to be in a high position and will not fall down.

[0035] In this embodiment, the welding assembly 3 includes a transfer channel 27, a screw rod 28, a rotating disk 35 and a welding head 36. A second rack 29 is welded to one side of the inner wall of the transfer channel 27. A first magnetic sheet 32 ​​is also embedded at the end of the transfer channel 27. The end of the screw rod 28 is embedded in the inner wall of the transfer channel 27 through a bearing. The heights of the two first magnetic sheets 32 are different. A threaded sleeve 31 is sleeved on the surface of the screw rod 28. A push sleeve 34 is integrally formed on the side of the threaded sleeve 31. A linkage shaft 33 is inserted in the middle of the push sleeve 34. The rotating disk 35 is integrally formed at the bottom end of the linkage shaft 33. A second magnetic sheet 38 is embedded on the side of the rotating disk 35. The top of the welding head 36 is fixed below the rotating disk 35. A pressing roller 37 is fixedly installed on the side of the welding head 36. There are two pressing rollers 37, and the bottom of each pressing roller 37 is flush with the bottom surface of the welding head 36. The second magnetic sheet 38 is used to be adsorbed and fitted with one of the first magnetic sheets 32. The top key of the linkage shaft 33 is connected to the linkage gear 30, and a reset column 39 is welded on the top of the linkage gear 30. A strip-shaped notch is opened on the top of the transfer channel 27, and the reset column 39 passes upward from the inside of the strip-shaped notch on the top of the transfer channel 27. The reset column 39 is used to pull the linkage gear 30 to move up and down along the linkage shaft 33.

[0036] With the help of the welding assembly 3, the connection between the vertical rod and the horizontal rod can be welded quickly, and after being moved to the end, the welding position of the welding joint 36 can be automatically switched so that it can be directly aligned with the unwelded area on the other side of the vertical rod, thereby improving the welding efficiency, achieving accurate positioning of the welding joint 36, and providing protection for the welding joint 36.

[0037] Specifically, after starting the motor 26, the screw rod 28 cooperates with the threaded sleeve 31 to pull the pushing sleeve 34 to move, which can drive the inner linkage shaft 33 and the welding head 36 at the bottom to move synchronously. This movement process can weld one side of the vertical rod. When the pushing sleeve 34 pulls the welding head 36 to move to the end of the transfer channel 27, the linkage gear 30 at the top of the linkage shaft 33 is meshed with the second rack 29. The subsequent movement process will rotate the linkage gear 30 180°, and the welding head 36 can be moved to the other side of the vertical rod. In this state, manual The reset column 39 is pressed to move the linkage gear 30 downward. Therefore, when the motor 26 is started again to pull the welding head 36 back from the other side of the vertical rod, the linkage gear 30 will be offset from the second rack 29 due to the downward movement of the linkage gear 30, avoiding the situation of being affected by the second rack 29 and rotating again. The two magnetic sheets can be used to locate the position of the rotated welding head 36 to ensure that the welding head 36 is completely aligned with the side of the vertical rod, and the pressing rollers 37 on both sides first contact the surface of the horizontal rod to avoid the welding head 36 directly colliding with the surface of the horizontal rod.

[0038] The basic principles and main features of the present invention and the advantages of the present invention are shown and described above. For those skilled in the art, it is obvious that the present invention is not limited to the details of the above exemplary embodiments, and the present invention can be implemented in other specific forms without departing from the spirit or basic characteristics of the present invention.

[0039] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A welding device for GNSS equipment protection fence rods, comprising a welding device body, characterized in that: The welding device body comprises a base (1), a welding assembly (3) and a positioning and pushing mechanism (4); a back plate (2) is integrally formed at the rear end of the base (1); a welding assembly (3) is integrally formed on the surface of the back plate (2); a transfer channel (27) is sleeved on the surface of the welding assembly (3); a motor (26) is screwed to the end of the transfer channel (27); a screw rod (28) is inserted into the output end of the motor (26); a vertical rod insertion hole (25) is provided at the bottom of the surface of the back plate (2); The surface of the base (1) is provided with a horizontal rod positioning groove (23), the surface edge of the base (1) is welded with a vertical rod positioning column (24), the side of the base (1) is integrally formed with a guide plate (5), and the side of the base (1) is screwed with an electric telescopic rod (6), the positioning and pushing mechanism (4) is screwed to the end of the electric telescopic rod (6), and the positioning and pushing mechanism (4) is used to push the welded vertical rod, and the positioning and pushing mechanism (4) includes a sliding component (7) and a one-way pushing component (9), The surface of the guide plate (5) is provided with a slide groove (11), and a synchronous locking component (8) is embedded in the interior of the slide groove (11). The synchronous locking component (8) includes a slide plate (12) and an end baffle plate (14). The surface of the slide plate (12) is integrally formed with a first rack (13). The end baffle plate (14) is welded above the two ends of the slide plate (12). The slide plate (12) is integrally embedded in the interior of the slide groove (11), and the surface of the slide plate (12) is flush with the surface of the guide plate (5). A gap is provided between the two ends of a rack (13) and the inner side of the end baffle (14), at least two synchronous locking components (8) are embedded on the surface of each guide plate (5), the sliding component (7) includes a sliding box (15), the electric telescopic rod (6) is connected to the sliding box (15), and the one-way pushing component (9) is driven to move through the sliding box (15), the side of the sliding box (15) is used to abut against the inner side of the end baffle (14), and the top surface of the sliding box (15) is below the bottom surface of the welded vertical rod.

2. The welding device for GNSS equipment protection fence rod according to claim 1 is characterized in that: The one-way pushing assembly (9) comprises a central shaft (18) and a lifting block (21); the bottoms of both ends of the sliding box (15) are integrally formed with lower hanging plates (16); there are two sliding boxes (15), and the two sliding boxes (15) are combined and fixed by a connecting rod (10); the end of the electric telescopic rod (6) is fixedly connected to the side of one of the sliding boxes (15).

3. The welding device for GNSS equipment protection fence rod according to claim 2 is characterized in that: The top of the sliding box (15) is provided with a lifting port (17), and both ends of the central shaft (18) are embedded in the inner wall of the sliding box (15) through bearings. The surface of the central shaft (18) is key-connected with end gears (19), and a long gear (20) is welded between the two end gears (19).

4. The welding device for GNSS equipment protection fence rod according to claim 3 is characterized in that: A toothed plate (22) is welded to one side of the bottom of the lifting block (21), the side of the long gear (20) is meshed with the toothed plate (22), the top of the lifting block (21) passes upward from the inside of the lifting port (17), the bottom of the end gear (19) is meshed with the surface of the first rack (13), and the inner side of the lower hanging plate (16) is pressed against the side of the guide plate (5).

5. The welding device for GNSS equipment protection fence rod according to claim 1 is characterized in that: The welding assembly (3) comprises a screw rod (28), a rotating disk (35) and a welding head (36); a second rack (29) is welded to one side of the inner wall of the transfer channel (27); a first magnetic sheet (32) is also embedded at the end of the transfer channel (27); the end of the screw rod (28) is embedded in the inner wall of the transfer channel (27) via a bearing; and the heights of the two first magnetic sheets (32) are different.

6. The welding device for GNSS equipment protection fence rod according to claim 5 is characterized in that: The surface of the screw rod (28) is sleeved with a threaded sleeve (31), the side of the threaded sleeve (31) is integrally formed with a pushing sleeve (34), the middle of the pushing sleeve (34) is inserted with a linkage shaft (33), the rotating disk (35) is integrally formed at the bottom end of the linkage shaft (33), the side of the rotating disk (35) is embedded with a second magnetic attraction sheet (38), and the top of the welding head (36) is fixed below the rotating disk (35).

7. The welding device for GNSS equipment protection fence rod according to claim 6 is characterized in that: A pressing roller (37) is fixedly mounted on the side of the welding head (36), the number of the pressing rollers (37) is two, and the bottom of each pressing roller (37) is flush with the bottom surface of the welding head (36), and the second magnetic attraction sheet (38) is used for adsorption and bonding with one of the first magnetic attraction sheets (32).

8. The welding device for GNSS equipment protection fence rod according to claim 7 is characterized in that: The top key of the linkage shaft (33) is connected to a linkage gear (30), a reset column (39) is welded to the top of the linkage gear (30), a strip-shaped notch is opened at the top of the transfer channel (27), the reset column (39) passes upward from the strip-shaped notch at the top of the transfer channel (27), and the reset column (39) is used to pull the linkage gear (30) to move up and down along the linkage shaft (33).

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