Novel coiling and welding machine

Abstract

The invention discloses a novel roll welding machine which comprises a rack, an upper die assembly, a lower die assembly, an auxiliary positioning assembly, a welding assembly and a driving unit, and a die pressing cavity can be defined by the upper die assembly and the lower die assembly; the auxiliary positioning assembly comprises two swing arms, when the flat workpiece is placed in the mold pressing cavity and subjected to mold pressing in the mold pressing cavity, the driving unit can drive the second ends of the swing arms to swing so that the two free ends, extending out of the mold pressing cavity, of the workpiece can be tightly pressed on the lower mold plate, the two free ends of the workpiece can be close to each other, and a welding area is formed; the welding area corresponds to the notch in position; and the welding assembly comprises a welding drive and a welding gun, and the welding drive can drive the welding gun to move in the length direction of the welding area so as to facilitate welding. The device is reasonable in structure, good in welding effect, high in integration level and low in production and manufacturing cost.

Description

Technical Field

[0001] The invention relates to the technical field of welding equipment, in particular to a novel coil welding machine. Background Art

[0002] In the prior art, processing a flat strip tool into a cylinder and welding it usually requires multiple stations and multiple steps to complete the processing, which not only occupies a large area, but also requires multiple transfers and positioning. The equipment structure is complex and the cost is high, which is not conducive to improving the processing efficiency. In addition, when processing is carried out in sequence at multiple stations, the coordination operation between the stations also requires complex control equipment to complete, which is not conducive to simplifying the equipment. Summary of the invention

[0003] The present invention discloses a new type of coil welding machine, which solves the technical problems of the coil welding equipment in the prior art, such as complex structure, large floor space and high production cost, and has the technical effects of reasonable structure, high integration and low production cost. The technical scheme adopted is as follows:

[0004] A new coil welding machine, comprising:

[0005] A frame, wherein a driving unit is provided on the frame;

[0006] The upper mold assembly comprises an upper mold plate, which is slidably disposed on the frame and can slide up and down under the action of the driving unit;

[0007] The lower mold assembly comprises a lower mold plate fixed on the frame, the upper mold plate and the lower mold plate can be enclosed to form a molding cavity, and the lower mold plate comprises an axially extending notch;

[0008] The auxiliary positioning assembly includes two swing arms, the first ends of which are rotatably arranged on the frame, and when the flat workpiece is placed in the molding cavity and molded in the molding cavity, the driving unit can drive the second ends of the swing arms to swing, so as to press the two free ends of the workpiece extending out of the molding cavity against the lower mold plate, so that the two free ends of the workpiece are close to each other and form a welding area, and the welding area corresponds to the position of the notch;

[0009] The welding assembly includes a welding drive and a welding gun. The welding drive can drive the welding gun to move along the length direction of the welding area to facilitate welding.

[0010] Based on the above technical solution, the upper mold assembly also includes an upper slide and a connecting plate. The upper slide is slidably connected to the frame and can slide up and down under the action of the driving unit. The upper mold plate is connected to the upper slide through the connecting plate, and the connecting plate is adjustably connected to the upper slide up and down to adjust the size of the molding cavity.

[0011] On the basis of the above technical solution, the auxiliary positioning assembly also includes two guide plates and a lower sliding seat, the lower sliding seat is slidably connected to the frame and can slide up and down under the action of the driving unit, the two guide plates are arranged corresponding to the two swing arms and are connected to the lower sliding seat in an adjustable position, the guide plate is provided with a guide groove, a guide rod is inserted in the guide groove, and the guide rod is connected to the swing arm, when the lower sliding seat drives the guide plate to slide, the guide rod slides along the guide groove to drive the second end of the swing arm to swing.

[0012] On the basis of the above technical solution, the lower template includes two first templates and two second templates, the two first templates and the two second templates are arranged circumferentially, the two first templates are symmetrically spaced apart on the left and right and form a partial molding cavity, the two second templates are symmetrically spaced apart on the left and right and form an axially extending notch, and the second ends of the two swing arms can press the two free ends of the workpiece against the two second templates.

[0013] On the basis of the above technical solution, it also includes an ejection assembly, which includes two L-shaped ejection pieces, the first connecting rod of the L-shaped ejection piece is embedded between the first template and the second template, the second connecting rod of the L-shaped ejection piece is arranged facing the end surface of the workpiece, and the driving unit can drive the two L-shaped ejection pieces to move to push out the welded workpiece.

[0014] On the basis of the above technical solution, the welding assembly also includes a push frame, a fixed frame, a movable rod and a fixed guide rail, the welding drive can drive the push frame to move, the first end of the fixed frame is hinged to the push frame, the second end of the fixed frame is provided with a through hole for the welding gun to pass through, the movable rod is arranged close to the welding gun head, the first end of the movable rod is hinged to the welding gun, the second end of the movable rod is vertically fixed with an axle rod, the two ends of the axle rod are respectively provided with rollers, the guide rail is used to support the roller upward, and the contact surface between the guide rail and the roller is designed that when the nozzle of the welding gun is close to the first end of the welding area, the nozzle of the welding gun is close to the welding area and displaced along the length direction of the welding area, and when the nozzle of the welding gun slides to the second end of the welding area, the nozzle of the welding gun is away from the welding area.

[0015] On the basis of the above technical solution, it also includes a shearing component, which includes an upper shearing die and a lower shearing die that are staggered. The lower shearing die is fixed on the frame. The upper shearing die and the lower shearing die can be moved closer or farther away under the action of the driving unit to shear the workpiece.

[0016] Based on the above technical solution, the driving unit includes a first motor fixed on the frame, the first motor drives the upper template to slide through the first transmission assembly, the first motor drives the two swing arms to swing through the second transmission assembly, and the first motor drives the upper shear mold to move up and down through the third transmission assembly.

[0017] On the basis of the above technical scheme, it also includes a feeding component, which includes a shell, a feeding roller group and a feeding drive. The feeding roller group has multiple feeding roller groups and is arranged in parallel along the feeding direction. The feeding roller group includes a lower roller and an upper roller that are relatively arranged. A feeding channel is formed between the lower roller and the upper roller. The two ends of the roller shaft of the lower roller are respectively rotatably connected to the two side plates of the shell, and the two ends of the roller shaft of the upper roller are respectively rotatably connected to two lifting blocks. The lifting blocks are embedded in the long grooves on the side plates of the shell, and the upper ends of the lifting blocks are connected to the inner top surface of the long grooves through elastic members. The feeding drive can transmit the rotational motion to the lower roller and the upper roller.

[0018] On the basis of the above technical solution, it also includes two positioning bead groups arranged on the frame and on both sides of the lower template, the positioning bead group includes two positioning beads arranged on the front and rear sides of the workpiece, the positioning beads include a sleeve, the sleeve includes a hollow cavity, a ball is embedded in the port of the hollow cavity, and the ball is connected to the inner wall of the hollow cavity through a spring, and the ball can contact the bottom surface of the workpiece upward to support the workpiece upward.

[0019] Beneficial Effects

[0020] The present invention has a reasonable structure, and the workpiece can be wound, welded and unloaded at the same workstation. The equipment has a high degree of integration and a compact size, and can avoid multiple positioning, while being beneficial to improving processing efficiency. In addition, in the present invention, the upper mold assembly, auxiliary positioning assembly, shearing assembly and other functional components are driven by the same motor, that is, the functional units have good coordination and low cost, while avoiding the need to add a control unit to achieve the effect of coordinated action.

[0021] The lower template of the present invention is roughly annular, wherein the two first templates are spaced apart so that the workpiece has a certain degree of freedom in the molding cavity, avoiding wrinkles and the like when the workpiece is completely restricted, which is beneficial to improving the molding qualification rate. In addition, the two free ends of the workpiece are pressed against the second template from the outside to the inside by the second end of the swing arm, and the second end of the swing arm simultaneously passes over the workpiece from top to bottom, dynamically making the workpiece adhere to the second template. The clever design makes the workpiece fit well with the second template, avoiding the situation where the welding area cannot be realized due to direct molding. In addition, two positioning bead groups are included to support the workpiece upward while avoiding interference with the workpiece.

[0022] The welding assembly structure of the present invention is ingeniously designed. Under the action of the guide rail, the welding gun is close to the welding area during welding and is far away from the welding area when welding is stopped. The design is reasonable and the cost is low.

[0023] In addition, a feeding mechanism is also provided in the present application. The feeding channel formed by the feeding roller group in the feeding assembly can flexibly feed forward, that is, when the thickness of the workpiece is uneven, hard squeezing of the workpiece can be avoided. At the same time, multiple feeding roller groups are provided, and the workpiece unwound by the workpiece coil can be flattened to a flat plate state after passing through multiple groups of feeding roller groups. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the prior art descriptions are briefly introduced below. Obviously, the drawings described below are only one embodiment of the present invention, and for ordinary technicians in this field, other implementation drawings can be derived from the provided drawings without creative work.

[0025] Figure 1 : The three-dimensional structure of the present invention is shown in FIG. Figure 1 ;

[0026] Figure 2 : Schematic diagram of the three-dimensional structure of the present invention after removing the frame Figure 2 ;

[0027] Figure 3 : Schematic diagram of the three-dimensional structure of the upper mold assembly;

[0028] Figure 4 : Schematic diagram of the three-dimensional structure of the lower mold assembly;

[0029] Figure 5 : Schematic diagram of the three-dimensional structure of the auxiliary positioning component;

[0030] Figure 6 : Schematic diagram of the three-dimensional structure of the welding assembly;

[0031] Figure 7 : Schematic diagram of the three-dimensional structure of the positioning bead group;

[0032] Figure 8 : Schematic diagram of the three-dimensional structure of the shearing component;

[0033] Fig. 9 : Schematic diagram of the three-dimensional structure of the feeding component; DETAILED DESCRIPTION

[0034] The following description and accompanying drawings fully illustrate the specific embodiments of this article so that those skilled in the art can practice them. Parts and features of some embodiments may be included in or replace parts and features of other embodiments. The scope of the embodiments of this article includes the entire scope of the claims, as well as all available equivalents of the claims. Herein, the terms "first", "second", etc. are only used to distinguish one element from another, without requiring or implying any actual relationship or order between these elements. In fact, the first element can also be called the second element, and vice versa. Moreover, the terms "include", "comprise" or any other variant thereof are intended to cover non-exclusive inclusion, so that the structure, device or equipment including a series of elements includes not only those elements, but also other elements that are not explicitly listed, or also include elements inherent to such structure, device or equipment. In the absence of more restrictions, the elements defined by the sentence "including one..." do not exclude the existence of other identical elements in the structure, device or equipment including the elements. Each embodiment is described in a progressive manner herein, and each embodiment focuses on the differences from other embodiments, and the same and similar parts between the embodiments can be referred to each other.

[0035] The terms "longitudinal", "lateral", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc. in this document indicate the orientation or position relationship based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing this document and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In the description of this document, unless otherwise specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a mechanical connection or an electrical connection, it can also be the internal communication of two elements, it can be a direct connection, or it can be an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0036] As used herein, the term "plurality" means two or more than two, unless otherwise specified.

[0037] In this document, the character " / " indicates that the preceding and following objects are in an "or" relationship. For example, A / B means: A or B.

[0038] In this article, the term "and / or" is a description of the association relationship between objects, indicating that three relationships may exist. For example, A and / or B means: A or B, or, A and B.

[0039] like Figures 1 to 9A new type of coil welding machine shown, comprising:

[0040] The frame 1 is a frame structure, and a mounting plate 11 is fixedly arranged on the frame 1. In addition, a driving unit 6 is arranged on the frame 1. The driving unit 6 includes a first motor fixedly arranged on the frame, and a rotor end of the first motor can transmit rotational motion to an input shaft of a reducer through a belt assembly;

[0041] like Figure 3 As shown, the upper mold assembly 2 includes an upper mold plate 21, an upper slide 22 and a connecting plate 23. The upper slide 22 is slidably connected to the frame 1. Specifically, a first slide rail is provided at the corresponding position of the mounting plate 11, and the upper slide 22 is provided with a first slide groove matching the first slide rail. The upper mold plate 21 is connected to the upper slide 22 through the connecting plate 23, and the connecting plate 23 is adjustably connected to the upper slide 22 in the upper and lower positions. Specifically, the connecting plate 23 is fixedly connected to the upper mold plate 21 downward, and a vertically extending long hole is provided on the upper part of the connecting plate 23. A screw is passed through the long hole to connect to the upper slide 22, so that the position of the connecting plate 23 relative to the upper slide 22 can be adjusted, and so the size of the molding cavity can be adjusted.

[0042] In addition, it also includes a first cam 24, a first lifting plate 25 and a first guide column 26. The output shaft of the reducer can transmit the rotational motion to the first cam 24. Specifically, the first motor transmits the rotational motion to the first cam 24 through the first transmission component, wherein the transmission component is a prior art and can be selected by those skilled in the art according to needs; two rollers are provided on the upper part of the side of the upper slide 22, and the outer edge surface of the first cam 24 can abut against the wheel surface of the roller to drive the upper slide 22 to slide downward along the first slide rail;

[0043] The upper end of the first lifting plate 25 is hinged to the first cam 24, and the lower end of the first lifting plate 25 is provided with a long groove extending along its axial direction. The first guide column 26 is vertically fixed on the upper slide 22, and the end of the first guide column 26 is inserted in the long groove. The output shaft of the reducer can transmit the rotational motion to the first cam 24, so that the first cam 24 rotates between the first position and the second position. When the first cam 24 is set to the first position, the upper slide 22 is in the upper limit position, and the first guide column 26 abuts against the bottom surface of the long groove. When the first cam 24 is in the second position, the upper slide 22 slides to the lower limit position and forms a molding cavity together with the lower template. At this time, the first guide column 26 is away from the two ends of the long groove.

[0044] like Figure 4As shown, the lower mold assembly 3 includes a lower mold plate fixed on the mounting plate, and the lower mold plate includes two first mold plates 31 and two second mold plates 32. The two first mold plates 31 and the two second mold plates 32 are arranged circumferentially along the same central axis, and the two first mold plates 31 are symmetrically spaced apart from each other and can form a partial molding cavity with the upper mold plate 21. The two second mold plates 32 are arranged below the two first mold plates 31, and the two second mold plates 32 are symmetrically spaced apart from each other and form an axially extending notch 34. In this embodiment, it also includes a top block 33, which is slidably mounted on the mounting plate 11 up and down, and is arranged between the two first mold plates 31. The top surface of the top block 33 is an arc surface and is slightly lower than the annular surface formed by the outer wall surfaces of the two first mold plates 31 to avoid the workpiece from protruding toward the center of the lower mold plate due to transitional deformation.

[0045] like Figure 5 The auxiliary positioning assembly 4 shown includes two swing arms 41, two guide plates 42 and a lower slide seat 43. The first end of the swing arm 41 is rotatably disposed on the mounting plate 11 through a bearing, and the second end of the swing arm 41 is rotatably connected to a roller;

[0046] The lower slide seat 43 is slidably connected to the frame 1. Specifically, a second slide rail extending vertically is provided at a corresponding position of the mounting plate 11, and the lower slide seat 43 is provided with a second slide groove matching the second slide rail. The two guide plates 42 are provided corresponding to the two swing arms 41. Figure 5 As shown, the two guide plates 42 have the same structure and are symmetrically arranged. A long hole is provided on the guide plate 42, and a screw is passed through the long hole to be connected to the lower slide seat 43, so that the guide plate 42 can be connected to the lower slide seat 43 in an adjustable up and down position. A guide groove is provided on the guide plate 42, and a guide rod is inserted in the guide groove. The guide rod is vertically fixedly connected to the swing arm 41. When the lower slide seat 43 drives the guide plate 42 to slide up and down, the guide rod slides along the guide groove to drive the second end of the swing arm 41 to swing.

[0047] In addition, it also includes a second cam 44, which is rotatably connected to the mounting plate 11 through a bearing, and a roller is installed at the bottom of the lower sliding seat 43. The outer edge of the second cam 44 faces upward and abuts against the bottom of the roller. The output end of the reducer can transmit the rotational motion to the second cam through the second transmission component, so that the two swing arms 41 can be driven to swing, wherein the transmission component is a prior art, and technicians in this field can select it according to needs.

[0048] In this way, when the flat workpiece is placed in the molding cavity and molded in the molding cavity, the driving unit 6 can drive the second end of the swing arm to swing so as to press the two free ends of the workpiece extending out of the molding cavity onto the second template. During this process, the second end of the swing arm 41 moves from the outside to the inside and from the top to the bottom, and the second end of the swing arm slides across the workpiece, and makes the workpiece fit well on the outside of the second template 32, and finally makes the two free ends of the workpiece close to each other and form a welding area, which corresponds to the position of the notch 34.

[0049] like Figure 7As shown, it also includes two positioning bead groups arranged on the mounting plate 11 and on both sides of the lower template. The positioning bead groups include two positioning beads 8 which are arranged on the front and rear sides of the workpiece and are opposite to each other. The positioning beads 8 include a sleeve. The sleeve includes a hollow cavity. A ball is embedded in the port of the hollow cavity. The ball is connected to the inner wall of the hollow cavity through a spring. In the absence of external force, the ball partially extends out of the sleeve and contacts the bottom surface of the workpiece upward to support the workpiece upward. When an external force is applied, the workpiece can squeeze the ball and slide past the ball.

[0050] like Figure 6 The welding assembly 5 shown includes a welding drive 51, a welding gun 52, a push frame 53, a fixed frame 54, a movable rod 55 and a fixed guide rail 56. The welding drive can drive the push frame 53 to move. Specifically, a first plate 57 is vertically fixedly connected to the back of the mounting plate 11. The welding drive 51 includes a welding motor, a first lead screw and a first lead screw nut. The first lead screw nut is sleeved outside the first lead screw, and the first lead screw nut is slidably connected to the first plate 57. The welding motor is fixed on the first plate 57 and can transmit rotational motion to the first lead screw, wherein the push frame 53 is fixedly connected to the first lead screw nut downward, and the upper end of the push frame 53 extends upward to the outside of the first plate 57. The first end of the fixed frame 54 is hinged to the push frame 53, and the second end of the fixed frame 54 is provided with a through hole for the welding gun 52 to pass through. The welding gun 52 passes through the through hole and is fixedly connected to the fixed frame 54.

[0051] The movable rod 55 is arranged near the head of the welding gun 52, and the first end of the movable rod 55 is hinged to the outer wall of the welding gun 52, and the second end of the movable rod 55 is vertically fixed with an axle rod, the axle rod passes through the second end of the movable rod and rollers 58 are respectively provided at both ends of the axle rod, and the guide rail 56 is fixed on the first flat plate 57 and includes an undulating upper end surface for supporting the roller 58 upward, and the contact surface between the guide rail 56 and the roller 58, that is, the upper end surface of the guide rail 56 is designed so that when the mouth of the welding gun 52 is close to the first end of the welding area, the mouth of the welding gun 52 is close to the welding area and displaced along the length direction of the welding area, and when the mouth of the welding gun 52 slides to the second end of the welding area, the mouth of the welding gun 52 is away from the welding area, and the structural design is ingenious.

[0052] like Figure 4 As shown, it also includes an ejection assembly, which includes two L-shaped ejector pieces 9. The first connecting rod of the L-shaped ejector piece 9 is embedded between the first template and the second template. The second connecting rod of the L-shaped ejector piece 9 is arranged facing the end surface of the workpiece. The output end of the reducer can drive the two L-shaped ejector pieces 9 to move forward and backward through the fourth transmission assembly to push out the welded workpiece, and the degree of automation is high.

[0053] like Figure 7As shown, it also includes a shearing component 10, which includes an upper shearing die 101 and a lower shearing die 102 that are staggered along the workpiece conveying direction, and also includes a second plate 103 and a third plate 104 that are relatively arranged up and down, the lower shearing die 102 is fixed downward on the second plate 103, and the upper shearing die 101 is fixed upward to the third plate 104, wherein the third plate 104 is arranged above the second plate 103 and fixedly connected to the frame 1, and a number of springs (not shown) are connected between the two opposite end surfaces of the third plate 104 and the second plate 103, and in addition, two guide shafts 105 are fixed on the third plate 103, and the guide shafts 105 pass downward through the second plate 103 to guide the second plate 103.

[0054] In addition, a first shaft 106 and a second shaft 107 are provided above the third plate 104. The first shaft 106 is rotatably arranged, and a bearing is provided on the outer sleeve of the first shaft 106. The second shaft 107 is arranged parallel to the first shaft 106 and is rotatably arranged. A shearing cam 108 is provided on the outer sleeve of the second shaft 107. The outer wall surface of the shearing cam 108 includes a plurality of circumferentially arranged protrusions, and a concave portion is formed between two adjacent protrusions. The shearing cam 108 is sleeved on the outside of the second shaft 107 through a one-way bearing. Figure 7 As shown, the outer wall surface of the shearing cam 108 abuts downward against the outer edge surface of the bearing outside the first shaft 106, and the output end of the reducer can drive the shearing cam 108 to rotate in steps through the third transmission assembly. Each step of rotation passes through a convex portion, that is, each step of rotation, the upper shearing die 101 and the lower shearing die 102 cooperate to shear the workpiece once.

[0055] like Fig. 9 As shown, it also includes a feeding assembly 12, the feeding assembly 12, the shearing assembly 10 and the molding cavity are arranged in sequence along the feeding direction, the feeding assembly 12 includes a shell 121, a feeding roller group and a feeding drive, there are multiple feeding roller groups and they are arranged in parallel along the feeding direction, the feeding roller group includes a lower roller 122 and an upper roller 123 that are arranged opposite to each other, and a feeding channel is formed between the lower roller 122 and the upper roller 123, the two ends of the roller shaft of the lower roller 122 are respectively rotatably connected to the two side plates of the shell 121, and the two ends of the roller shaft of the upper roller 123 are respectively connected to the two lifting blocks 124 is rotatably connected, wherein the lifting block is embedded in the long groove on the side plate of the shell, and the upper end of the lifting block is connected to the inner top surface of the long groove through the elastic member 125, and the feeding drive can transmit the rotational motion to the lower roller 122 and the upper roller 123, and the feeding channel formed by the feeding roller group in the feeding assembly can flexibly feed forward, that is, when the thickness of the workpiece is uneven, hard squeezing of the workpiece can be avoided, and at the same time, a plurality of feeding roller groups are arranged, and the workpiece unwound by the workpiece coil can be flattened to a flat plate state after passing through a plurality of feeding roller groups, and the structural design is reasonable.

[0056] The present invention is described above by way of examples, but the present invention is not limited to the above specific embodiments, and any changes or modifications made based on the present invention belong to the scope of protection claimed by the present invention.

Claims

1. A new type of coil welding machine, characterized in that: include: A frame (1), wherein a driving unit (6) is provided on the frame (1); An upper mold assembly (2) comprises an upper mold plate (21), wherein the upper mold plate (21) is slidably disposed on the frame (1) and can slide up and down under the action of a driving unit (6); A lower mold assembly (3) comprises a lower mold plate fixedly mounted on the frame (1), wherein the upper mold plate and the lower mold plate can be combined to form a molding cavity, and the lower mold plate comprises an axially extending notch (34); The auxiliary positioning assembly (4) comprises two swing arms (41), wherein the first end of the swing arm (41) is rotatably arranged on the frame (1), and when the flat workpiece is placed in the molding cavity and is molded in the molding cavity, the driving unit (6) can drive the second end of the swing arm (41) to swing, so that the two free ends of the workpiece extending out of the molding cavity are pressed against the lower mold plate, so that the two free ends of the workpiece are close to each other and form a welding area, and the welding area corresponds to the position of the notch (34); The welding assembly (5) comprises a welding drive (51) and a welding gun (52). The welding drive (51) can drive the welding gun (52) to move along the length direction of the welding area to facilitate welding.

2. The novel coil welding machine according to claim 1 is characterized in that: The upper mold assembly (2) further comprises an upper slide (22) and a connecting plate (23); the upper slide (22) is slidably connected to the frame (1) and can slide up and down under the action of the driving unit (6); the upper mold plate (21) is connected to the upper slide (22) via the connecting plate (23); and the connecting plate (23) is adjustably connected to the upper slide (21) in an upper and lower position so as to adjust the size of the molding cavity.

3. The novel coil welding machine according to claim 1 is characterized in that: The auxiliary positioning assembly (4) further comprises two guide plates (42) and a lower sliding seat (43); the lower sliding seat (43) is slidably connected to the frame (1) and can slide up and down under the action of the driving unit (6); the two guide plates (42) are arranged corresponding to the two swing arms (41) and are connected to the lower sliding seat (43) in an adjustable manner; a guide groove is provided on the guide plate (42); a guide rod is inserted into the guide groove; the guide rod is connected to the swing arm (41); when the lower sliding seat (43) drives the guide plate (42) to slide, the guide rod slides along the guide groove to drive the second end of the swing arm (41) to swing.

4. The novel coil welding machine according to claim 1 is characterized in that: The lower mold plate comprises two first mold plates (31) and two second mold plates (32). The two first mold plates (31) and the two second mold plates (32) are arranged circumferentially. The two first mold plates (31) are symmetrically spaced apart from each other and form a partial molding cavity. The two second mold plates (32) are symmetrically spaced apart from each other and form an axially extending notch (34). The second ends of the two swing arms (41) can press the two free ends of the workpiece onto the two second mold plates (32).

5. The novel coil welding machine according to claim 4 is characterized in that: The invention also comprises an ejection assembly, wherein the ejection assembly comprises two L-shaped ejection members (9), a first connecting rod of the L-shaped ejection member (9) is embedded between a first template (31) and a second template (32), a second connecting rod of the L-shaped ejection member (9) is arranged facing the end surface of the workpiece, and the driving unit (6) can drive the two L-shaped ejection members to move so as to eject the welded workpiece.

6. The novel coil welding machine according to claim 1 is characterized in that: The welding assembly (5) further comprises a push frame (53), a fixed frame (54), a movable rod (55) and a fixed guide rail (56); the welding drive (51) can drive the push frame (53) to move; the first end of the fixed frame (54) is hinged to the push frame (53); the second end of the fixed frame (54) is provided with a through hole for the welding gun (52) to pass through; the movable rod (55) is arranged near the head of the welding gun (52); the first end of the movable rod (55) is hinged to the welding gun (52); the movable rod The second end of (55) is vertically fixed with an axle rod, and rollers (58) are respectively provided at both ends of the axle rod. The guide rail (56) is used to support the roller (58) upward, and the contact surface between the guide rail (56) and the roller (58) is designed so that when the nozzle of the welding gun (52) approaches the first end of the welding area, the nozzle of the welding gun (52) approaches the welding area and moves along the length direction of the welding area, and when the nozzle of the welding gun (52) slides to the second end of the welding area, the nozzle of the welding gun (52) moves away from the welding area.

7. The novel coil welding machine according to any one of claims 1 to 6, characterized in that: The machine also comprises a shearing assembly (10), wherein the shearing assembly (10) comprises an upper shearing die (101) and a lower shearing die (102) which are arranged in a staggered manner, wherein the lower shearing die (102) is fixed on the frame (1), and the upper shearing die (101) and the lower shearing die (102) can be moved closer or farther away under the action of a driving unit (6) to shear a workpiece.

8. The novel coil welding machine according to claim 7 is characterized in that: The driving unit (6) comprises a first motor fixed on the frame (1); the first motor drives the upper mold plate (21) to slide via a first transmission assembly; the first motor drives two swing arms (41) to swing via a second transmission assembly; and the first motor drives the upper shear mold (101) to move up and down via a third transmission assembly.

9. The novel coil welding machine according to claim 7 is characterized in that: The invention also comprises a feeding assembly (12), wherein the feeding assembly (12) comprises a shell (121), a feeding roller group and a feeding drive. The feeding roller group has a plurality of rollers and is arranged in parallel along the feeding direction. The feeding roller group comprises a lower roller (122) and an upper roller (123) which are arranged opposite to each other. A feeding channel is formed between the lower roller (122) and the upper roller (123). The two ends of the roller shaft of the lower roller (122) are respectively rotatably connected to the two side plates of the shell (121). The two ends of the roller shaft of the upper roller (123) are respectively rotatably connected to two lifting blocks (124). The lifting blocks (124) are embedded in the long grooves on the side plates of the shell (121). The upper ends of the lifting blocks (124) are connected to the inner top surface of the long grooves through elastic members (125). The feeding drive can transmit the rotational motion to the lower roller (122) and the upper roller (123).

10. The novel coil welding machine according to claim 8 or 9, characterized in that: It also includes two positioning bead groups arranged on the frame (1) and arranged on both sides of the lower template, the positioning bead groups include two positioning beads (8) arranged on the front and rear sides of the workpiece, the positioning beads (8) include a sleeve, the sleeve includes a hollow cavity, a ball is embedded in the port of the hollow cavity, and the ball is connected to the inner wall of the hollow cavity through a spring, and the ball can contact the bottom surface of the workpiece upward to support the workpiece upward.

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