Flat wire punching device

Abstract

The utility model relates to the technical field of cutting-off devices, and provides a flat wire punching-off device which comprises an installation frame, a punching tool apron, a collision tool located above the punching tool apron and a driving assembly used for enabling the collision tool and the punching tool apron to move relatively so as to cut off a flat wire located between the collision tool and the punching tool apron. The driving assembly comprises a driving shaft which is rotatably supported on the mounting frame by taking a first axis as an axis, and the driving shaft comprises a first switching part and a second switching part; the first connecting rod is supported on the mounting frame in a liftable manner, and the collision knife is fixed on the first connecting rod; one end of the first rotary adapter arm is rotatably connected to the first adapter part by taking a second axis as an axis and can rotatably drive the first connecting rod to do lifting motion on the driving shaft, the other end of the first rotary adapter arm is pivotally connected with the first connecting rod, and the second axis is parallel to the first axis and is spaced from the first axis. Compared with the prior art, the flat wire thrusting device is convenient to maintain, and the maintenance cost and the production cost can be reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of cutting devices, in particular to a flat wire punching and cutting device. Background Art

[0002] At present, a motor with a stator winding using a rectangular cross-section wire is called a flat wire motor (also called a Pin motor). Different from a common wound motor, a flat wire motor does not first wind a round wire into a specific coil and then embed it into the stator slot by a machine. Instead, a flat wire (also called a copper wire or a flat copper wire, hereinafter collectively referred to as a flat wire for the sake of unified technical terms) is preformed, inserted into the stator slot, and then formed and welded again at one or both ends to form the entire stator winding. The flat wire is beneficial to improving the slot fill factor of the motor. Generally, the slot fill factor of a round wire motor is about 50%, while that of a flat wire motor can reach more than 70%. According to the winding form of the flat wire motor, it can be further divided into a Hair-pin winding (also called a hairpin winding), an I-Pin winding (also called an I-shaped clip winding), a wave winding, etc. The hairpin-shaped flat wire winding gets its name because its shape is more like a hairpin. Its advantage is that only one end needs to be welded, and its disadvantage is that the preparation is relatively complex. After the hairpin is formed, the hairpin wires are inserted into the stator core in groups, and finally assembled into a finished motor stator through equipment such as flaring, twisting, welding, and dipping. The process of the hairpin forming machine mainly includes unwinding, peeling, fixed-length cutting, and hairpin forming.

[0003] The traditional cutting device includes a frame, an upper cutting knife, a lower cutting knife, and an oil cylinder. The lower cutting knife is fixed on the frame, and the upper cutting knife is connected to the oil cylinder and moves up and down under the drive of the oil cylinder. However, the oil cylinder is prone to oil leakage, causing pollution, complex maintenance, and large energy consumption. Content of the Utility Model

[0004] The purpose of the utility model is to provide a flat wire punching and cutting device to solve the technical problems of complex equipment maintenance and high cost existing in the prior art.

[0005] To achieve the above-mentioned purpose, the technical solution adopted by the utility model is: to provide a flat wire cutting device, including a mounting frame, a punching knife seat, a striking knife located above the punching knife seat, and a driving assembly for making the striking knife and the punching knife seat move relative to each other to cut the flat wire located between the two; the driving assembly includes: a driving shaft, which is rotatably supported on the mounting frame with a first axis as an axis, and the driving shaft includes a first adapter and a second adapter; a motor, which can rotate the driving shaft; a first connecting rod, which is liftably supported on the mounting frame, and the striking knife is fixed on the first connecting rod; a first rotating transfer arm, one end of which is rotatably connected to the first adapter with a second axis as an axis, and can drive the first connecting rod to move up and down in rotation on the driving shaft, and the other end is pivotally connected to the first connecting rod, the second axis is parallel to the first axis and spaced from the first axis; a second connecting rod, on which the punching knife seat is fixed; and a second rotating transfer arm, one end of which is rotatably connected to the second adapter, and the other end is pivotally connected to the second connecting rod.

[0006] Furthermore, the second connecting rod is supported on the mounting frame in a liftable manner; the second rotating transfer arm has one end which is rotatably connected to the second transfer part with the third axis as the axis, and can drive the second connecting rod to move up and down by rotating on the driving shaft, and the other end is pivotally connected to the second connecting rod, and the third axis is parallel to the first axis and spaced apart from the first axis and the second axis.

[0007] Furthermore, the mounting frame includes a front mounting seat and a rear mounting seat, which are connected to form a stamping cavity for accommodating the punching knife seat, the impact knife, the first connecting rod and the second connecting rod, and the first connecting rod and the second connecting rod are installed in the stamping cavity in a liftable manner.

[0008] Furthermore, a tool assembly groove is provided on the first connecting rod, and the impact knife is installed in the tool assembly groove; a positioning groove or a positioning protrusion is provided on the outer wall of the impact knife, and a positioning matching protrusion or a positioning matching groove is provided on the groove wall of the tool assembly groove on the first connecting rod.

[0009] Furthermore, a locking seat is provided on the first connecting rod for retaining the impact knife on the first connecting rod.

[0010] Furthermore, a wire crimping seat is connected below the locking seat, a wire crimping groove is provided on the bottom surface of the wire crimping seat for the flat wire to move in and out, and a collision hole is provided on the wire crimping seat for the collision knife to pass through; the wire crimping seat is connected to the locking seat through an elastic member.

[0011] Furthermore, a material collecting pipe is arranged below the punching tool seat, and the punching tool seat has a punching hole connected with the material collecting pipe.

[0012] Furthermore, an air blowing assembly is arranged on the mounting frame, and the air blowing assembly comprises an air guide pipe with one end placed in the collecting pipe.

[0013] Further, the punching tool holder has a punching hole for inserting the impact punch. On opposite sides of the inner wall of the punching hole of the punching tool holder, forming protrusions are respectively convexly provided, and the two forming protrusions are arranged at intervals; the impact punch includes two guiding and supporting parts and a cutting part connected between the two guiding and supporting parts. The cutting part has an impact surface on its bottom surface and two cutting surfaces on opposite sides of the impact surface. Forming grooves corresponding to the forming protrusions are provided on the cutting surfaces of the cutting part.

[0014] Further, the end of the forming protrusion is arc-shaped or angular.

[0015] Compared with the prior art, the flat wire punching device provided by the present utility model includes a mounting frame, a punching tool holder, an impact punch, and a driving assembly. The driving assembly includes a motor, a driving shaft, a first connecting rod, a first rotary adapter arm, a second connecting rod, and a second rotary adapter arm. The driving shaft is rotatably supported on the mounting frame with the first axis as the axis. The driving shaft includes a first adapter part and a second adapter part. The first connecting rod is supported on the mounting frame in a liftable manner and is fixed to the impact punch. One end of the first rotary adapter arm is rotatably connected to the first adapter part with the second axis as the axis, and the other end is pivotally connected to the first connecting rod. The second axis is parallel to the first axis and is spaced apart from the first axis; the punching tool holder is fixed to the second connecting rod. One end of the second rotary adapter arm is rotatably connected to the second adapter part, and the other end is pivotally connected to the second connecting rod.

[0016] The beneficial effects of the flat wire punching device provided by the present utility model are as follows: Compared with the prior art, the flat wire punching device of the present utility model has a simple structure, is convenient for maintenance, and can reduce the maintenance cost and production cost. In addition, the driving shaft can be replaced according to production requirements, so as to switch the lifting movement and stationary working state of the punching tool holder. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a perspective view of the flat wire punching device provided by Embodiment 1 of the present utility model;

[0018] Figure 2 is an exploded view of the flat wire punching device provided by Embodiment 1 of the present utility model;

[0019] Figure 3 is Figure 1 a cross-sectional view taken along the V-V plane in

[0020] Figure 4 is Figure 3 an enlarged view of Part VI in

[0021] Figure 5 is an exploded view of the driving assembly, punching tool holder, impact punch, locking seat, and wire pressing seat provided by Embodiment 1 of the present utility model;

[0022] Figure 6It is a three-dimensional schematic diagram of a punching tool holder and a punching tool provided in the first embodiment of the present utility model;

[0023] Figure 7 It is a front view schematic diagram of a drive shaft provided in the second embodiment of the present utility model.

[0024] Main component symbol description

[0025] 100 - Flat wire punching device; 1 - Mounting frame; 11 - Front mounting seat; 12 - Rear mounting seat; 2 - Punching tool holder; 21 - Punching hole; 22 - Forming convex block; 3 - Punching tool; 31 - Positioning groove; 32 - Guide support portion; 33 - Cutting portion; 330 - Punching surface; 331 - Cutting surface; 332 - Forming groove; 4 - Drive assembly; 41 - Drive shaft; 411 - First transfer portion; 412 - Second transfer portion; 410 - Shaft body; 413 - First support portion; 414 - Second support portion; 415 - Connecting portion; 42 - Motor; 43 - First connecting rod; 431 - Tool assembly groove; 432 - Positioning mating convex block; 44 - First rotary transfer arm; 45 - Second connecting rod; 46 - Second rotary transfer arm; 47 - First connecting pin; 48 - Support bearing; 49 - First bearing; 50 - Second bearing; 51 - Second connecting pin; 52 - Locking seat; 53 - Wire pressing seat; 531 - Wire pressing groove; 532 - Punching hole; 54 - Aggregate pipe; 55 - Blowing assembly; 551 - Air guide pipe; A1 - First axis; A2 - Second axis; A3 - Third axis. Detailed implementation manners

[0026] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present utility model clearer and more understandable, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the described embodiments are part of the embodiments of the present utility model, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the described embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0027] In order to enable those skilled in the art to better understand the technical solutions of the present utility model, the implementation of the present utility model will be described in detail below with reference to specific drawings.

[0028] For the sake of convenience of narration, the "front", "rear", "left", "right", "upper" and "lower" referred to hereinafter are consistent with the front, rear, left, right, upper and lower directions of the accompanying drawings themselves, but do not limit the structure of the present utility model.

[0029] Unless otherwise defined, the technical terms or scientific terms used herein shall have the ordinary meanings as understood by those of ordinary skill in the art to which this utility model pertains. The terms "first", "second" and similar terms used in the description and claims of this utility model patent application do not denote any order, quantity or importance, but are only used to distinguish different components. Similarly, terms such as "a" or "an" do not denote a limitation of quantity, but mean that there is at least one.

[0030] As Figures 1 to 7 shown, the flat wire punching device 100 provided in this embodiment includes a mounting frame 1, a punching knife seat 2, a punching knife 3 located above the punching knife seat 2, and a driving assembly 4 for relatively moving the punching knife 3 and the punching knife seat 2 to cut a flat wire (not shown in the figure) located therebetween; the driving assembly 4 includes: a driving shaft 41 rotatably supported on the mounting frame 1 about a first axis A1, the driving shaft 41 including a first transfer portion 411 and a second transfer portion 412; a motor 42 capable of rotating the driving shaft 41; a first connecting rod 43 liftably supported on the mounting frame 1, the punching knife 3 being fixed to the first connecting rod 43; a first rotary transfer arm 44 having one end rotatably connected to the first transfer portion 411 about a second axis A2 and capable of driving the first connecting rod 43 to move up and down when the driving shaft 41 rotates, and the other end pivotally connected to the first connecting rod 43, the second axis A2 being parallel to and spaced apart from the first axis A1; a second connecting rod 45, the punching knife seat 2 being fixed to the second connecting rod 45; and a second rotary transfer arm 46 having one end rotatably connected to the second transfer portion 412 and the other end pivotally connected to the second connecting rod 45.

[0031] For the above flat wire punching device 100, the driving shaft 41 is rotatably supported on the mounting frame 1 about the first axis A1, the driving shaft 41 includes the first transfer portion 411 and the second transfer portion 412, the first connecting rod 43 is liftably supported on the mounting frame 1 and fixed to the punching knife 3, one end of the first rotary transfer arm 44 is rotatably connected to the first transfer portion 411 about the second axis A2, and the other end is pivotally connected to the first connecting rod 43, the second axis A2 being parallel to and spaced apart from the first axis A1; the punching knife seat 2 is fixed to the second connecting rod 45, one end of the second rotary transfer arm 46 is rotatably connected to the second transfer portion 412, and the other end is pivotally connected to the second connecting rod 45. In this way, the overall structure is more concise, facilitating maintenance and capable of reducing maintenance costs and production costs. Embodiment

[0032] See Figures 1 to 5, the flat wire punching device 100 provided in this embodiment includes a mounting frame 1, a punching tool holder 2, a punching tool 3, and a driving assembly 4. The punching tool holder 2 and the punching tool 3 are respectively connected to the driving assembly 4. The punching tool 3 is arranged on the mounting frame 1 in a manner that can reciprocally move up and down relative to the mounting frame 1. The punching tool holder 2 can be arranged on the mounting frame 1 in a manner that reciprocally moves up and down relative to the mounting frame 1, or can be fixedly installed on the mounting frame 1. The punching tool 3 is located above the punching tool holder 2. Under the drive of the driving assembly 4, the punching tool holder 2 can move downward relative to the punching tool holder 2 to cut the flat wire located therebetween. In this embodiment, both the punching tool holder 2 and the punching tool 3 are connected to the driving assembly 4. Under the drive of the driving assembly 4, the punching tool holder 2 is arranged on the mounting frame 1 in a manner that its position relative to the mounting frame 1 remains stationary, but the punching tool 3 will move up and down relative to the punching tool holder 2 under the drive of the driving assembly 4, and when moving downward, it cooperates with the punching tool holder 2 to cut the flat wire located therebetween.

[0033] See Figures 1 to 5, the driving assembly 4 provided in this embodiment includes a motor 42, a driving shaft 41, a first connecting rod 43, a first rotary adapter arm 44, a second connecting rod 45, and a second rotary adapter arm 46. The driving shaft 41 is rotatably installed on the mounting bracket 1. The driving shaft 41 is rotatably supported on the mounting bracket 1 with the first axis A1 as the axis. The first connecting rod 43 is supported on the mounting bracket 1 in a vertically movable manner. The impact knife 3 is fixed on the first connecting rod 43. One end of the first rotary adapter arm 44 is rotatably connected to the driving shaft 41 with the second axis A2 as the axis and can drive the first connecting rod 43 to move up and down when the driving shaft 41 rotates. The other end is connected to the first connecting rod 43 through a first connecting pin 47. The second axis A2 is parallel to the first axis A1 and spaced apart from the first axis A1. The punching knife seat 2 is fixed on the second connecting rod 45. One end of the second rotary adapter arm 46 is rotatably connected to the second connecting portion 412, and the other end is pivotally connected to the second connecting rod 45. In this embodiment, the driving assembly 4 includes a driving shaft 41, a first connecting rod 43, a first rotary adapter arm 44, a second connecting rod 45, and a second rotary adapter arm 46. Both ends of the driving shaft 41 are rotatably installed on the mounting bracket 1 through support bearings 48. The driving shaft 41 can rotate on the first axis A1 extending through its radial center. The first connecting rod 43 is installed on the mounting bracket 1 in a reciprocating up-and-down motion manner and is located below the driving shaft 41. The impact knife 3 is fixed to the bottom of the first connecting rod 43 by means of screws, welding, or any other fixing method. One end of the first rotary adapter arm 44 is rotatably attached to the driving shaft 41 through a first bearing 49 with the second axis A2 as the axis. The second axis A2 is parallel to the first axis A1 and spaced apart from the first axis A1. The other end is rotatably connected to the first connecting rod 43 through a first connecting pin 47. The axis of the first connecting pin 47 is parallel to the first axis A1, and the diameter of the first connecting pin 47 is smaller than the diameter of the hole on the first connecting rod 43 through which the first connecting pin 47 passes. The first rotary adapter arm 44 rotates relative to the driving shaft 41 with the second axis A2 as the axis. When the driving shaft 41 rotates, the connection point between the first rotary adapter arm 44 and the driving shaft 41 can rotate around the first axis A1. At the same time, the first rotary adapter arm 44 and the driving shaft 41 rotate relative to each other around the second axis A2, and drive the first connecting rod 43 connected to the first rotary adapter arm 44 to move up and down.The punching tool holder 2 is fixed to the bottom of the second connecting rod 45 by means of screws, welding or any other fixing means. One end of the second rotary adapter arm 46 is rotatably attached to the drive shaft 41 through a second bearing 50, and the other end is rotatably connected to the second connecting rod 45 through a second connecting pin 51. The axis of the second bearing 50 coincides with the first axis A1, and the axis of the second connecting pin 51 is parallel to the first axis A1. Moreover, the diameter of the second connecting pin 51 is smaller than the diameter of the hole on the second connecting rod 45 through which the second connecting pin 51 passes. In this way, when the drive shaft 41 rotates, only the first rotary adapter arm 44, the first connecting rod 43 and the punching tool 3 move up and down, and the positions of the second rotary adapter arm 46, the second connecting rod 45 and the punching tool holder 2 remain unchanged.

[0034] See Figures 1 to 5 For the mounting bracket 1 provided in this embodiment, it includes a front mounting seat 11 and a rear mounting seat 12. The front mounting seat 11 and the rear mounting seat 12 are connected to form a stamping cavity for accommodating the punching tool holder 2, the punching tool 3, the first connecting rod 43 and the second connecting rod 45. The first connecting rod 43 is installed in the stamping cavity in a vertically movable manner. In this embodiment, the front mounting seat 11 and the rear mounting seat 12 are fixedly connected by means of screws, welding or any other fixing means. The drive shaft 41 is arranged through the front mounting seat 11 and the rear mounting seat 12, and the first connecting rod 43 is installed in the stamping cavity in a reciprocating up-and-down movable manner.

[0035] See Figures 3 to 5 In this embodiment, the drive shaft 41 includes a shaft body 410, and a first support portion 413, a first adapter portion 411, a second adapter portion 412, a second support portion 414, and a coupling portion 415 arranged in sequence along the axial direction of the shaft body 410. Among them, the shaft body 410 has a first axis A1 extending along its length direction and passing through the radial center of the shaft body 410. The axes of the first support portion 413, the second adapter portion 412, the second support portion 414, and the coupling portion 415 all coincide with the first axis A1. The first adapter portion 411 has a second axis A2 extending along its length direction and passing through the radial center of the first adapter portion 411. The second axis A2 is parallel to the first axis A1 and spaced apart from the first axis A1. The first support portion 413 and the second support portion 414 are respectively rotatably installed on the mounting bracket 1 through support bearings 48. The first rotary adapter arm 44 is rotatably sleeved on the first adapter portion 411 through a first bearing 49, and the second rotary adapter arm 46 is rotatably sleeved on the second adapter portion 412 through a second bearing 50. The coupling portion 415 is connected to the motor 42 and is driven to rotate by the motor 42.

[0036] See Figure 5, in the first connecting rod 43 provided in this embodiment, a tool assembly groove 431 is formed, and the impact tool 3 is installed in the tool assembly groove 431; a positioning groove 31 may be formed on the outer sidewall of the impact tool 3, or a positioning projection (not shown in the figure) may be protruded. On the groove wall of the tool assembly groove 431 on the first connecting rod 43, a positioning mating projection 432 that cooperates and engages with the positioning groove 31, or a positioning mating groove (not shown in the figure) that cooperates and engages with the positioning projection may be protruded. In this embodiment, a tool assembly groove 431 is formed on the first connecting rod 43, and the impact tool 3 is installed in the tool assembly groove 431; a positioning groove 31 is formed on the outer sidewall of the impact tool 3, and a positioning mating projection 432 is protruded on the groove wall of the tool assembly groove 431 on the first connecting rod 43. In this way, it is convenient to replace the impact tool 3 and facilitate the maintenance of the equipment.

[0037] See Figures 1 to 5 , a locking seat 52 is provided on the first connecting rod 43 provided in this embodiment for holding the impact tool 3 on the first connecting rod 43. In this embodiment, the locking seat 52 is detachably installed on the first connecting rod 43 through fasteners such as screws and at least partially covers the impact tool 3. Through the limiting of the bottom surface of the tool assembly groove 431 of the first connecting rod 43 and the locking seat 52, the impact tool 3 is fixed on the first connecting rod 43.

[0038] See Figures 3 to 5 , a wire pressing seat 53 is connected below the locking seat 52 provided in this embodiment. A wire pressing groove 531 for the flat wire to move in and out is formed on the bottom surface of the wire pressing seat 53, and an impact hole 532 for the impact tool 3 to pass through is formed on the wire pressing seat 53; the wire pressing seat 53 is connected to the locking seat 52 through an elastic member.

[0039] See Figure 6 , the punching tool seat 2 provided in this embodiment has a punching hole 21 for the impact tool 3 to be placed in and cooperate with the impact tool 3 for punching. On the opposite sides of the inner wall of the punching hole 21 of the punching tool seat 2, forming protrusions 22 are respectively protruded, and the two forming protrusions 22 are arranged at intervals; the impact tool 3 includes two guiding and supporting parts 32 and a cutting part 33 connected between the two guiding and supporting parts 32. The cutting part 33 has a punching surface 330 on its bottom surface and two cutting surfaces 331 on the opposite sides of the punching surface 330. Forming grooves 332 corresponding to the forming protrusions 22 are formed on the cutting surfaces 331 of the cutting part 33.

[0040] See Figure 6 , in this embodiment, the end of the forming protrusion 22 is arc-shaped.

[0041] See Figures 1 to 6, a collecting pipe 54 is arranged below the punching tool holder 2 provided in this embodiment, and the collecting pipe 54 communicates with the punching hole 21. In this way, the cut flat wire part can be discharged out of the device through the collecting pipe 54, and the cut flat wire part can be collected through a collecting box (not shown in the figure).

[0042] See Figures 2 to 5 , a blowing assembly 55 is arranged on the mounting bracket 1 provided in this embodiment. The blowing assembly 55 includes an air guide pipe 551 with one end placed inside the collecting pipe 54. The blowing assembly 55 is connected to an external air source device (not shown in the figure), and gas is blown into the collecting pipe 54 through the air guide pipe 551 to prevent blockage inside the collecting pipe 54. Embodiment

[0043] The following will be described in detail only with respect to the differences from the first embodiment: Figure 7

[0044] See Figure 7 , in this embodiment, both the first connecting rod 43 and the second connecting rod 45 are installed in the punching cavity in a liftable manner, and the end of the forming bump 22 is angular. The driving shaft 41 includes a shaft body 410, and a first support portion 413, a first transfer portion 411, a second transfer portion 412, a second support portion 414, and a coupling portion 415 are sequentially arranged along the axial direction of the shaft body 410. Among them, the shaft body 410 has a first axis A1 extending along its length direction and passing through the radial center of the shaft body 410, and the axes of the first support portion 413, the second support portion 414, and the coupling portion 415 all coincide with the first axis A1; the first transfer portion 411 has a second axis A2 extending along its length direction and passing through the radial center of the first transfer portion 411, the second axis A2 is parallel to the first axis A1 and spaced apart from the first axis A1; the second transfer portion 412 has a third axis A3 extending along its length direction and passing through the radial center of the second transfer portion 412, the third axis A3 is parallel to the first axis A1 and spaced apart from the first axis A1 and the second axis A2. One end of the first rotary transfer arm 44 is rotatably sleeved on the first transfer portion 411 through a first bearing 49, and the other end is rotatably connected to the first connecting rod 43 through a first connecting pin 47; one end of the second rotary transfer arm 46 is rotatably sleeved on the second transfer portion 412 through a second bearing 50, and the other end is rotatably connected to the second connecting rod 45 through a second connecting pin 51. It is worth mentioning that the driving shaft 41 can be replaced according to production requirements, so as to switch the lifting movement and stationary working state of the punching tool holder 2.

[0045] The above are only the preferred embodiments of the present invention, and are not intended to limit the present invention. Any modifications, equivalent replacements, or improvements made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.​

Claims

1. A flat wire breaking device, characterized in that: It includes a mounting frame, a punching knife seat, a striking knife located above the punching knife seat, and a driving assembly for making the striking knife and the punching knife seat move relative to each other to cut the flat wire located therebetween; the driving assembly includes: a driving shaft, which is rotatably supported on the mounting frame with a first axis as an axis, and the driving shaft includes a first adapter and a second adapter; a motor, which can rotate the driving shaft; a first connecting rod, which is liftably supported on the mounting frame, and the striking knife is fixed on the first connecting rod; a first rotating transfer arm, one end of which is rotatably connected to the first adapter with a second axis as an axis, and can drive the first connecting rod to move up and down when rotating on the driving shaft, and the other end is pivotally connected to the first connecting rod, the second axis is parallel to the first axis and spaced from the first axis; a second connecting rod, the punching knife seat is fixed on the second connecting rod; and a second rotating transfer arm, one end of which is rotatably connected to the second adapter, and the other end is pivotally connected to the second connecting rod.

2. The flat wire breaking device according to claim 1, characterized in that: The second connecting rod is supported on the mounting frame in a liftable manner; a second rotating transfer arm has one end rotatably connected to the second transfer portion with a third axis as an axis, and can drive the second connecting rod to move up and down by rotating on the driving shaft, and the other end is pivotally connected to the second connecting rod, and the third axis is parallel to the first axis and spaced apart from the first axis and the second axis.

3. The flat wire breaking device according to claim 2, characterized in that: The mounting frame includes a front mounting seat and a rear mounting seat, and the front mounting seat and the rear mounting seat are connected to form a stamping cavity for accommodating the punching knife seat, the impact knife, the first connecting rod and the second connecting rod. The first connecting rod and the second connecting rod are installed in the stamping cavity in a liftable manner.

4. The flat wire breaking device according to any one of claims 1 to 3, characterized in that: The first connecting rod is provided with a tool assembly groove, and the impact knife is installed in the tool assembly groove; the outer wall of the impact knife is provided with a positioning groove or a positioning protrusion, and the groove wall of the tool assembly groove on the first connecting rod is provided with a positioning matching protrusion or a positioning matching groove.

5. The flat wire breaking device according to any one of claims 1 to 3, characterized in that: The first connecting rod is provided with a locking seat for retaining the impact knife on the first connecting rod.

6. The flat wire breaking device according to claim 5, characterized in that: A wire crimping seat is connected below the locking seat, a wire crimping groove is provided on the bottom surface of the wire crimping seat for the flat wire to move in and out, and a collision hole is provided on the wire crimping seat for the collision knife to pass through; the wire crimping seat is connected to the locking seat through an elastic member.

7. The flat wire breaking device according to any one of claims 1 to 3, characterized in that: A material collecting pipe is arranged below the punching tool seat, and the punching tool seat has a punching hole communicated with the material collecting pipe.

8. The flat wire breaking device according to claim 7, characterized in that: The mounting frame is provided with an air blowing assembly, and the air blowing assembly comprises an air guide pipe with one end placed in the interior of the collecting pipe.

9. The flat wire breaking device according to any one of claims 1 to 3, characterized in that: The punching knife seat has a punching hole for the impact knife to be placed in, and the punching knife seat is provided with forming protrusions on the opposite sides of the inner wall of the punching hole, and the two forming protrusions are arranged alternately; the impact knife includes two guide support parts and a cutting part connected between the two guide support parts, and the cutting part has a collision surface located on its bottom surface and two cutting surfaces located on the opposite sides of the collision surface, and the cutting surface of the cutting part is provided with a forming groove corresponding to the forming protrusion.

10. The flat wire breaking device according to claim 9, characterized in that: The end of the molding protrusion is in an arc shape or an angular shape.

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