Metal strip conveying device

Abstract

The utility model belongs to automatic production equipment, and particularly relates to a metal material belt conveying device which is characterized in that a plurality of positioning holes are formed in a metal material belt at equal intervals; the conveying device comprises a rack, a material belt conveying wheel and a rotating wheel stepping pushing assembly. Positioning pins opposite to the distance between the positioning holes are arranged on the periphery of the material belt conveying wheel in a protruding mode, and a first pressing wheel is arranged on one side of the material belt conveying wheel and used for limiting the metal material belt so that the metal material belt can be attached to part of the peripheral face of the material belt conveying wheel, and the positioning pins can be inserted into the positioning holes; the rotating wheel stepping pushing assembly is used for pushing the material belt conveying wheel to rotate in a stepping mode according to a preset angle. The material belt conveying wheel with the positioning pin is matched with the metal material belt with the positioning hole, the rotating wheel stepping pushing assembly pushes the material belt conveying wheel to rotate in a stepping mode according to the preset angle, stepping conveying of the metal material belt is achieved, and the metal material belt is not prone to deflection.

Description

Technical Field

[0001] The utility model belongs to automated production equipment, in particular to a metal material belt conveying device. Background Art

[0002] Electromagnetic coil production lines involve conveying conductive metal strips, which are then stamped and cut into conductive pins for assembly. The strip conveyor needs to step the metal strip, conveying it at preset intervals to complete the stamping and cutting of each conductive pin. Existing equipment uses this stepping conveyor for the conductive metal strip, which has low conveying efficiency. The conductive metal strip is prone to deflection, and the conveying distance is unstable, which can easily lead to defective conductive pins after stamping and cutting. Utility Model Content

[0003] The purpose of the utility model is to overcome the shortcomings and deficiencies of the prior art and to provide a metal strip conveying device.

[0004] The technical solution adopted by the utility model is as follows: a metal strip conveying device,

[0005] The metal strip is provided with a plurality of positioning holes at equal intervals;

[0006] The conveying device includes a frame, a material belt conveying wheel, and a rotating wheel stepping push assembly;

[0007] The outer periphery of the material belt conveyor wheel is provided with a positioning pin corresponding to the spacing of the positioning hole, and a first pressure wheel is provided on one side of the material belt conveyor wheel for limiting the metal material belt so that the metal material belt is partially attached to the outer periphery of the material belt conveyor wheel and the positioning pin is inserted into the positioning hole;

[0008] The rotating wheel stepping driving assembly is used to drive the material belt conveying wheel to rotate step by step according to a preset angle.

[0009] The wheel stepping pushing assembly includes a one-way ratchet, a fixing frame, a first track member, a first sliding block, a one-way pushing block, and a driving device;

[0010] The one-way ratchet is connected to one side of the material belt conveyor wheel and forms a circumferential linkage with the material belt conveyor wheel;

[0011] The fixing frame is fixed on the frame, the first track member is fixed on the fixing frame, the first sliding block can be slidably limited on the first track member, and the driving device is used to drive the first sliding block to slide back and forth linearly relative to the first track member;

[0012] The one-way push block is hingedly connected to the first sliding block, and is provided with a pushing tooth. An elastic member is provided to act on the one-way push block so that the pushing tooth cooperates with the outer periphery of the one-way ratchet. When the first sliding block moves toward the one-way ratchet, the pushing tooth pushes the one-way ratchet to rotate, thereby rotating the material belt conveyor wheel. When the first sliding block is away from the one-way ratchet, the one-way ratchet does not rotate.

[0013] The driving device includes a pull wire;

[0014] An elastic member is provided to exert a force on the first sliding block toward the one-way ratchet. The pull wire acts on the first sliding block. When the pull wire is pulled, a force is exerted on the first sliding block away from the one-way ratchet.

[0015] A wire limiting plate is fixedly connected to the fixing frame, a wire fixing plate is hinged on the first sliding block, the wire fixing plate is fixedly connected to one end of the wire, and the wire passes through the second wire limiting plate.

[0016] The driving device includes a rotary driving mechanism, a rotary shaft, a second guide rail member, and a second sliding block, wherein the rotary driving mechanism drives the rotary shaft to rotate and an axial sliding guide groove is provided on the outer periphery of the rotary shaft, the second guide rail member is fixed to the frame, the second sliding block cooperates with the second guide rail member so that it can only slide axially along the rotary shaft, the second sliding block is connected to a guide member, and the guide member cooperates with the second sliding block axially, the guide member cooperates with the axial sliding guide groove, and when the rotary shaft rotates circumferentially, the axial sliding guide groove interacts with the guide member so that it and the second sliding block slide back and forth axially along the rotary shaft;

[0017] The second pull wire is connected to the second sliding block and is used to pull the pull wire back and forth.

[0018] The guide member is a first roller hingedly connected to the second sliding block and rotatable relative to the second sliding block.

[0019] The rotating wheel stepping pushing assembly includes a gear, the number of teeth on the outer periphery of the gear is equal to the number of teeth on the outer periphery of the one-way ratchet, and the gear and the one-way ratchet are circumferentially linked and cooperated;

[0020] A second roller is also provided which can move up and down relative to the fixed frame. An elastic member is provided between the second roller and the fixed frame so that the second roller fits the outer periphery of the gear. The second roller forms a stepping limit for the gear by cooperating with the tooth grooves between adjacent convex teeth of the gear.

[0021] It also includes a front guide assembly arranged at the front side of the material belt conveyor wheel and a rear guide assembly arranged at the rear side of the material belt conveyor wheel;

[0022] The front guide assembly includes a front bottom bracket and a guide wheel arranged on the front bottom bracket, and the rear guide assembly includes a rear bottom bracket and a pressure plate hingedly connected to the rear bottom bracket. The metal strip passes through the gap between the front bottom bracket and the guide wheel and cooperates with the strip conveying wheel. After bypassing the strip conveying wheel, it passes through the gap between the rear bottom bracket and the pressure plate.

[0023] There is also a material belt feeding detection sensor and a wheel stop drive mechanism on the wheel stepping push assembly. The material belt feeding detection sensor is installed on the front bottom bracket to detect whether the metal material belt is fed continuously. The wheel stop drive mechanism is arranged on the first sliding block and cooperates with the one-way push block. When the wheel stop drive mechanism is actuated, it acts on the one-way push block to push its pushing teeth away from the one-way ratchet. When the first sliding block moves toward the one-way ratchet, the pushing teeth cannot push the one-way ratchet to rotate normally.

[0024] The rear bottom bracket is provided with a proximity sensor for detecting whether the pressing plate is rotated into place.

[0025] The beneficial effects of the present invention are as follows: the present invention cooperates a material belt conveying wheel with a positioning pin with a metal material belt with a positioning hole, and pushes the material belt conveying wheel to rotate step by step according to a preset angle through a rotating wheel stepping pushing assembly, thereby realizing step-by-step conveying of the metal material belt, and the metal material belt is not easily deflected. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, without paying creative labor, other drawings obtained based on these drawings still fall within the scope of the present invention.

[0027] Figure 1 This is a schematic diagram of the partial structure of a metal strip conveyed in one embodiment of the present utility model;

[0028] Figure 2 This is a schematic structural diagram of a conveying device in one embodiment of the present utility model;

[0029] Figure 3 for Figure 1 A partially enlarged schematic diagram of the middle I region;

[0030] Figure 4 This is a structural diagram of the cooperation between the rotating wheel stepping pushing assembly and the rotating wheel stepping pushing assembly in one embodiment of the present utility model;

[0031] Figure 5This is an exploded schematic diagram of the coordination structure of the rotating wheel stepping driving assembly and the rotating wheel stepping driving assembly in one embodiment of the present utility model;

[0032] Figure 6 This is a schematic diagram of the cooperation structure of the one-way ratchet, the one-way push block, and the first sliding block in one embodiment of the utility model;

[0033] Figure 7 This is a schematic diagram of the matching structure of the gear and the second roller in one embodiment of the utility model;

[0034] Figure 8 This is a schematic structural diagram of a driving device in one embodiment of the present utility model;

[0035] In the figure, the metal strip 1, the positioning hole 101, the strip conveying wheel 2, the positioning pin 201, the first pressure roller 202, the one-way ratchet 3, the fixing frame 4, the wire limit plate 401, the first track member 5, the first sliding block 6, the spring limit groove 601, the push block 7, the push tooth 701, the wire 8, the rotary drive mechanism 9, the rotary shaft 10, the axial sliding guide groove 1001, the second guide rail member 11, and the second sliding block 12 , guide member-1201, gear-13, second roller-14, front bottom bracket-15, guide wheel-16, rear bottom bracket-17, pressure plate-18, material belt feeding detection sensor-19, wheel stop drive mechanism-20, proximity sensor-21, wire fixing plate-22, center axis-23, shaft frame-24, first compression spring-25, roller bracket-26, spring support frame-27, second compression spring-28, wire sleeve-29. DETAILED DESCRIPTION

[0036] In order to make the purpose, technical solutions and advantages of the present invention more clear, the present invention will be described in further detail below with reference to the accompanying drawings.

[0037] It should be noted that all expressions using "first" and "second" in the embodiments of the present invention are for the purpose of distinguishing two non-identical entities or non-identical parameters with the same name. It can be seen that "first" and "second" are only for the convenience of expression and should not be understood as limitations on the embodiments of the present invention. Subsequent embodiments will not explain this one by one.

[0038] The directional and positional terms used in this invention, such as up, down, front, back, left, right, inside, outside, top, bottom, and side, are merely references to the directions or positions in the accompanying drawings. Therefore, the directional and positional terms used are intended to illustrate and facilitate understanding of this invention and are not intended to limit the scope of protection of this invention.

[0039] A metal strip conveying device, the structure of the metal strip 1 conveyed in this embodiment is as follows Figure 1As shown, there are a number of positioning holes 101 at equal intervals, in which the parts to be stamped have been preliminarily formed. The metal strip conveying device of this embodiment is used to Figure 1 The metal strip 1 shown is fed into a punching device and parts are punched out one by one.

[0040] like Figure 2 The figure shows the metal strip conveying device of this embodiment. Figure 3 As shown, the metal strip conveying device includes a frame, a strip conveying wheel 2, a rotating wheel stepping push assembly, a front guide assembly arranged at the front side of the strip conveying wheel 2, and a rear guide assembly arranged at the rear side of the strip conveying wheel 2.

[0041] The outer periphery of the material conveyor wheel 2 is provided with a positioning pin 201 spaced relative to the positioning hole 101. A first pressure roller 202 is provided on one side of the material conveyor wheel 2 to limit the metal material 1, ensuring that the metal material 1 adheres to a portion of the outer periphery of the material conveyor wheel 2 and that the positioning pin 201 is inserted into the positioning hole 101. The rotating wheel stepping propulsion assembly is used to propel the material conveyor wheel 2 to rotate stepwise according to a preset angle. When the material conveyor wheel 2 rotates stepwise according to the preset angle, the metal material 1 moves accordingly by a corresponding arc length.

[0042] The material belt conveying wheel 2 is sleeved outside the central shaft 23 and is rotatable relative to the central shaft 23. The central shaft 23 is fixed to the frame through the shaft bracket 24, so that the material belt conveying wheel 2 is fixed to the frame.

[0043] like Figure 3-5 As shown, the wheel stepping push assembly includes a one-way ratchet 3, a fixing frame 4, a first track member 5, a first sliding block 6, a one-way push block 7, and a driving device;

[0044] The one-way ratchet 3 is connected to one side of the material belt conveyor wheel 2 and forms a circumferential linkage with the material belt conveyor wheel 2;

[0045] The fixing frame 4 is fixed to the frame, the first track member 5 is fixed to the fixing frame 4, the first sliding block 6 can be slidably limited on the first track member 5, and the driving device is used to drive the first sliding block 6 to slide back and forth linearly relative to the first track member 5;

[0046] like Figure 6As shown, the one-way push block 7 is hingedly connected to the first sliding block 6 and is provided with a push tooth 701. An elastic member acts on the one-way push block 7 to cause the push tooth 701 to engage with the outer periphery of the one-way ratchet 3. When the first sliding block 6 moves toward the one-way ratchet 3, the push tooth 701 pushes the one-way ratchet 3 to rotate, thereby rotating the material belt conveyor wheel 2. When the first sliding block 6 moves away from the one-way ratchet 3, the one-way ratchet 3 does not rotate. In this embodiment, a blind hole is provided on the first sliding block 6 at a position corresponding to the position below the push tooth 701. A first compression spring 25 is disposed within the blind hole. The first compression spring 25 pushes the one-way push block 7 upward to cause the push tooth 701 to approach the outer periphery of the one-way ratchet 3. Figure 6 In the process, the first sliding block 6 slides to the left, forming a locking linkage with the ratchet teeth of the one-way ratchet 3, so that the one-way ratchet 3 can be driven to rotate clockwise, thereby rotating the material belt conveyor wheel 2. The first sliding block 6 slides to the right to reset, and slides along the guide surface of the ratchet teeth of the one-way ratchet 3, so that it can be reset without driving the ratchet 3 to rotate.

[0047] The wheel stepping push assembly includes a gear 13, the number of teeth on the outer circumference of the gear 13 is equivalent to the number of teeth on the outer circumference of the one-way ratchet 3, and the gear 13 and the one-way ratchet 3 are circumferentially linked and coordinated; a second roller 14 is also provided which can move up and down relative to the fixed frame 4, and an elastic member is provided between the second roller 14 and the fixed frame 4 so that the second roller 14 fits the outer circumference of the gear 13. The second roller 14 forms a stepping limit for the gear 13 by cooperating with the tooth grooves between the adjacent convex teeth of the gear 13. In this embodiment, as Figure 7 As shown, the fixing frame 4 is provided with a through hole, the second roller 14 is hingedly connected to the roller bracket 26, and the roller bracket 26 is inserted into the through hole. The bottom of the fixing frame 4 is fixedly connected to the spring support frame 27 by a bolt. A second compression spring 28 is provided between the spring support frame 27 and the roller bracket 26. The second compression spring 28 forms an upward thrust on the roller bracket 26 to keep the second roller 14 in contact with the outer periphery of the gear 13. In this way, the second roller 14 will form a positioning effect on the gear 13, so that the gear 13, the one-way ratchet 3, and the material conveying wheel 2 that form an axial linkage can only rotate step by step according to the tooth interval angle under a certain external force. When the external force is not enough to overcome the elastic force of the second compression spring 28, the gear 13, the one-way ratchet 3, and the material conveying wheel 2 that form an axial linkage will not rotate, thereby ensuring the conveying distance of the metal strip 1.

[0048] The structure of the front guide assembly provided at the front side of the material belt conveyor wheel 2 and the rear guide assembly provided at the rear side of the material belt conveyor wheel 2 is as follows: Figure 3As shown, the front guide assembly includes a front bottom bracket 15 and guide wheels 16 mounted on the front bottom bracket 15. The rear guide assembly includes a rear bottom bracket 17 and a pressure plate 18 hingedly connected to the rear bottom bracket 17. The metal strip 1 passes through the gap between the guide wheels 16, engages with the strip conveyor wheel 2, and then passes through the gap between the rear bottom bracket 17 and the pressure plate 18. The rear bottom bracket 17 and the pressure plate 18 interact to repair and smooth the metal strip 1.

[0049] There is also a material belt feeding detection sensor 19 and a wheel stop driving mechanism 20 on the wheel stepping push assembly. The material belt feeding detection sensor 19 is installed on the front bottom bracket 15 and is used to detect whether the metal material belt 1 is continuously fed. Figure 6 As shown, the wheel stop drive mechanism 20 is disposed on the first sliding block 6 and cooperates with the one-way push block 7. When the wheel stop drive mechanism 20 is in operation, it acts on the one-way push block 7 to move its push teeth 701 away from the one-way ratchet 3. When the first sliding block 6 moves toward the one-way ratchet 3, the push teeth 701 are unable to properly rotate the one-way ratchet 3. In this embodiment, the wheel stop drive mechanism 20 utilizes a pneumatic cylinder. When the strip feeding detection sensor 19 does not detect the metal strip 1, the cylinder push rod pushes upward, causing the one-way push block 7 to rotate counterclockwise, preventing it from forming a locking linkage with the one-way ratchet 3.

[0050] The rear bottom bracket 17 is provided with a proximity sensor 21 for detecting whether the pressing plate 18 is rotated into position.

[0051] Furthermore, in this embodiment, the structure of the driving device for driving the first sliding block 6 is as follows: Figure 8 As shown, it includes a pull wire 8, a rotary drive mechanism 9, a rotating shaft 10, a second guide rail member 11, and a second sliding block 12. A pull wire sleeve 29 is provided on the outer shell of the pull wire 8, and both ends of the pull wire sleeve 29 are limited. When the pull wire 8 is pulled, it moves in the pull wire sleeve 29.

[0052] The rotary drive mechanism 9 drives the rotary shaft 10 to rotate, and an axial sliding guide groove 1001 is provided on the outer periphery of the rotary shaft 10. The second guide rail member 11 is fixed to the frame. The second sliding block 12 cooperates with the second guide rail member 11 so that it can only slide axially along the rotary shaft 10. The second sliding block 12 is connected to a guide member 1201, and the guide member 1201 and the second sliding block 12 cooperate axially. The guide member 1201 cooperates with the axial sliding guide groove 1001. When the rotary shaft 10 rotates circumferentially, the axial sliding guide groove 1001 interacts with the guide member 1201 so that it and the second sliding block 12 slide back and forth axially along the rotary shaft 10. The pull wire 8 is connected to the second sliding block 12 for reciprocating pulling of the pull wire 8. An elastic member is also provided to apply a force to the first sliding block 6 toward the one-way ratchet 3. The pull wire 8 acts on the first sliding block 6. When the pull wire 8 is pulled, it can apply a force to the first sliding block 6 away from the one-way ratchet 3. In this embodiment, a compression spring is provided between the first sliding block 6 and the frame to exert a force on the first sliding block 6 toward the one-way ratchet 3. Figure 4 As shown, the end of the first sliding block 6 away from the one-way ratchet 3 is provided with a spring retaining groove 601 for engaging with a compression spring. In this embodiment, the rotary drive mechanism 9 is specifically a rotary motor. The rotary drive mechanism 9 drives the rotary shaft 10 to rotate circumferentially one revolution. The second sliding block 12 reciprocates once, the pull wire 8 is pulled once, and the distance the first sliding block 6 is pulled is fixed.

[0053] The guide member 1201 is a first roller hingedly connected to the second sliding block 12 and rotatable relative to the second sliding block 12, so that the two can have rolling friction and reduce wear.

[0054] A wire limiting plate 401 is fixedly connected to the fixing frame 4 , a wire fixing plate 22 is hingedly connected to the first sliding block 6 , the wire fixing plate 22 is fixedly connected to one end of the wire 8 , and the wire 8 passes through the wire limiting plate 401 .

[0055] The above disclosure is only a preferred embodiment of the present invention, and certainly cannot be used to limit the scope of rights of the present invention. Therefore, equivalent changes made according to the claims of the present invention are still within the scope covered by the present invention.

Claims

1. A metal strip conveying device, characterized in that: The metal strip (1) is provided with a plurality of positioning holes (101) at equal intervals; The conveying device comprises a frame, a material belt conveying wheel (2), and a rotating wheel stepping driving assembly; The outer periphery of the material belt conveying wheel (2) is provided with a positioning pin (201) with a spacing relative to the positioning hole (101), and one side of the material belt conveying wheel (2) is provided with a first pressing wheel (202) for forming a limiting effect on the metal material belt (1) so that the metal material belt (1) is partially attached to the outer periphery of the material belt conveying wheel (2) and the positioning pin (201) is inserted into the positioning hole (101); The rotating wheel step-by-step driving assembly is used to drive the material belt conveying wheel (2) to rotate step by step according to a preset angle.

2. The metal strip conveying device according to claim 1, characterized in that: The rotating wheel stepping pushing assembly comprises a one-way ratchet (3), a fixing frame (4), a first track member (5), a first sliding block (6), a one-way pushing block (7), and a driving device; The one-way ratchet (3) is connected to one side of the material belt conveyor wheel (2) and forms a circumferential linkage with the material belt conveyor wheel (2); The fixing frame (4) is fixed on the frame, the first track member (5) is fixed on the fixing frame (4), the first sliding block (6) can be slidably limited on the first track member (5), and the driving device is used to drive the first sliding block (6) to slide back and forth linearly relative to the first track member (5); The one-way push block (7) is hingedly connected to the first sliding block (6), and is provided with a pushing tooth (701). An elastic member is provided to act on the one-way push block (7) so that the pushing tooth (701) cooperates with the outer periphery of the one-way ratchet (3). When the first sliding block (6) moves toward the one-way ratchet (3), the pushing tooth (701) pushes the one-way ratchet (3) to rotate, thereby rotating the material belt conveying wheel (2). When the first sliding block (6) is away from the one-way ratchet (3), the one-way ratchet (3) does not rotate.

3. The metal strip conveying device according to claim 2, characterized in that: The driving device includes a pull wire (8); An elastic member is provided to form an action force on the first sliding block (6) toward the one-way ratchet (3), and the pull wire (8) acts on the first sliding block (6). When the pull wire (8) is pulled, an action force is formed on the first sliding block (6) away from the one-way ratchet (3).

4. The metal strip conveying device according to claim 3, characterized in that: The fixing frame (4) is fixedly connected to a wire limiting plate (401) and is hinged to a wire fixing plate (22). One end of the wire fixing plate (22) is hinged to the first sliding block (6), and the other end is fixedly connected to the wire (8). The wire (8) passes through the wire limiting plate (401).

5. The metal strip conveying device according to claim 3, characterized in that: The driving device comprises a rotary driving mechanism (9), a rotary shaft (10), a second guide rail member (11), and a second sliding block (12); the rotary driving mechanism (9) drives the rotary shaft (10) to rotate, and an axial sliding guide groove (1001) is provided on the outer periphery of the rotary shaft (10); the second guide rail member (11) is fixed on the frame; the second sliding block (12) cooperates with the second guide rail member (11) so that the second sliding block (12) can only slide axially along the rotary shaft (10); the second sliding block (12) is connected to a guide member (1201), and the guide member (1201) and the second sliding block (12) cooperate in an axial linkage; the guide member (1201) cooperates with the axial sliding guide groove (1001); when the rotary shaft (10) rotates circumferentially, the axial sliding guide groove (1001) interacts with the guide member (1201) so that the second sliding block (12) and the second sliding block (12) slide back and forth axially along the rotary shaft (10); The pull wire (8) is connected to the second sliding block (12) and is used for reciprocatingly pulling the pull wire (8).

6. The metal strip conveying device according to claim 5, characterized in that: The guide member (1201) is a first roller hingedly connected to the second sliding block (12) and rotatable relative to the second sliding block (12).

7. The metal strip conveying device according to claim 3, characterized in that: The rotating wheel stepping pushing assembly comprises a gear (13), the number of teeth on the outer periphery of the gear (13) is equal to the number of teeth on the outer periphery of the one-way ratchet (3), and the gear (13) and the one-way ratchet (3) are circumferentially linked and matched; A second roller (14) is also provided which is movable up and down relative to the fixed frame (4). An elastic member is provided between the second roller (14) and the fixed frame (4) so ​​that the second roller (14) fits the outer periphery of the gear (13). The second roller (14) forms a stepping limit function for the gear (13) by cooperating with the tooth grooves between the adjacent convex teeth of the gear (13).

8. The metal strip conveying device according to claim 3, characterized in that: It also includes a front guide assembly arranged at the front side of the material belt conveyor wheel (2) and a rear guide assembly arranged at the rear side of the material belt conveyor wheel (2); The front guide assembly includes a front bottom bracket (15) and a guide wheel (16) arranged on the front bottom bracket (15); the rear guide assembly includes a rear bottom bracket (17) and a pressure plate (18) hingedly connected to the rear bottom bracket (17); the metal strip (1) passes through the gap of the guide wheel (16) and then cooperates with the strip conveying wheel (2); after passing through the gap between the rear bottom bracket (17) and the pressure plate (18), the metal strip (1) passes through the gap between the rear bottom bracket (17) and the pressure plate (18).

9. The metal strip conveying device according to claim 8, characterized in that: A material strip feeding detection sensor (19) and a wheel stepping driving assembly are also provided. The material strip feeding detection sensor (19) is installed on the front bottom bracket (15) and is used to detect whether the metal material strip (1) is continuously fed. The wheel stop driving mechanism (20) is arranged on the first sliding block (6) and cooperates with the one-way push block (7). When the wheel stop driving mechanism (20) is in motion, it acts on the one-way push block (7) to make its pushing teeth (701) move away from the one-way ratchet (3). When the first sliding block (6) moves toward the one-way ratchet (3), the pushing teeth (701) cannot normally push the one-way ratchet (3) to rotate.

10. The metal strip conveying device according to claim 8, characterized in that: The rear bottom bracket (17) is provided with a proximity sensor (21) for detecting whether the pressing plate (18) is rotated into place.

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