An external foil tension adjustment device applicable to a transformer foil winding machine

Abstract

The present invention discloses an external foil tension adjustment device applicable to a transformer foil winding machine, which relates to the technical field of transformer production equipment. The present invention provides an external foil tension adjustment device applicable to a transformer foil winding machine, including a winding machine, etc. A winding machine is equipped with a winding component. A support frame is fixedly connected between the winding machine and the winding component. The support frame is equipped with a mounting plate frame. The mounting plate frame is fixedly connected with a support plate. A bidirectional lead screw is rotatably connected to the mounting plate frame. A pair of moving frames are slidably connected to the mounting plate frame. A pair of guide wheels are rotatably connected to the moving frames. A guide plate is slidably connected to the moving frames. A pair of elastic components are fixedly connected between the guide plate and the moving frames. A pair of hole cylinders are rotatably connected to the guide plate. Through components such as the bidirectional lead screw and the hole cylinders, the present invention can adapt to foils of different widths and limit both sides of the foil, thereby avoiding problems such as slack, wrinkles, or edge warping of the foil in the width direction during the winding process.

Description

Technical Field

[0001] The present invention relates to the technical field of transformer production equipment, and in particular to an external foil tension adjustment device applicable to a transformer foil winding machine. Background Art

[0002] A transformer foil winding machine is an automated device used in transformer manufacturing, mainly for winding foil coils of high-power electrical equipment such as transformers and reactors. Among them, the foil coil is an important part of the transformer, which is wound by one or more wires in parallel and is a type of layer coil. And the conductor of the foil coil is a thin and wide copper foil or aluminum foil, which is used to improve the conductivity and energy efficiency of the transformer. The foil winding machine can effectively improve the conductivity of the coil and reduce the loss during the winding process through an automated and highly accurate winding process, thereby improving the energy efficiency and durability of the transformer.

[0003] Existing transformer foil winding machines usually come with advanced tension control systems to ensure that the foil always maintains a constant tension during the winding process, thereby avoiding winding deformation caused by slack or over-tightening. However, the existing foil tension adjustment devices can usually only control the tension degree of the foil in the longitudinal direction and cannot effectively control the tension degree of the foil in the transverse direction. Therefore, it is difficult to ensure that the tension is evenly distributed in the width direction of the foil, and problems such as slack, wrinkles, or edge warping may occur during the winding process of the foil, resulting in poor overall flatness and uniformity of the winding.

[0004] Based on the above situation, the present invention proposes an external foil tension adjustment device applicable to a transformer foil winding machine with high winding quality. Summary of the Invention

[0005] In order to overcome the defect that the existing foil tension adjustment device cannot effectively control the tension degree of the foil in the transverse direction, so it is difficult to ensure that the tension is evenly distributed in the width direction of the foil, and problems such as slack, wrinkles, or edge warping may occur during the winding process of the foil, resulting in poor overall flatness and uniformity of the winding, the present invention provides an external foil tension adjustment device applicable to a transformer foil winding machine with high winding quality.

[0006] An external foil tension adjustment device applicable to a transformer foil winding machine, comprising a winding machine, a winding component, a support frame, a mounting plate frame, a support plate, a support rod, a bidirectional lead screw, a moving frame, a guide plate, an elastic component, a diversion pipe, a hole cylinder, a guide wheel and an air pump. The winding machine is equipped with a winding component. A support frame is fixedly connected between the winding machine and the winding component. The support frame is installed with a mounting plate frame through bolts. The mounting plate frame is fixedly connected with a support plate. The support plate is threadedly connected with a pair of support rods. The mounting plate frame is rotatably connected with a bidirectional lead screw. The mounting plate frame is slidably connected with a pair of moving frames. The moving frames are threadedly connected with the bidirectional lead screw. The moving frames are rotatably connected with a pair of guide wheels. The moving frames are slidably connected with a guide plate. A pair of elastic components are fixedly connected between the guide plate and the moving frames. The guide plate is rotatably connected with a pair of hole cylinders. The mounting plate frame is fixedly connected with an air pump. A diversion pipe is fixedly connected and communicated between the air pump and the pair of hole cylinders.

[0007] In a preferred embodiment of the present invention, both the moving frame and the guide plate are provided with arc surfaces.

[0008] In a preferred embodiment of the present invention, a tensioning mechanism is further included. The tensioning mechanism is arranged on the guide plate. The tensioning mechanism includes a limiting plate, a moving block, a magnetic block, an electric push rod, a pushing block, a telescopic block and a resisting block. The moving block is slidably connected to the guide plate. The guide plate is fixedly connected with an electric push rod. The telescopic end of the electric push rod is fixedly connected with the moving block. The moving frame is slidably connected with a limiting plate. The limiting plate is fixedly connected with a pair of magnetic blocks. The moving block is also fixedly connected with a pair of magnetic blocks. The magnetic blocks are magnetically attracted to each other. The moving block is slidably connected with a pair of telescopic blocks. A pushing block is fixedly connected between the telescopic ends of the pair of telescopic blocks. The pushing block is fixedly connected with a resisting block. The moving block and the resisting block are in extrusion fit.

[0009] In a preferred embodiment of the present invention, the pushing block is provided with an inclined surface.

[0010] In a preferred embodiment of the present invention, the resisting block is provided with an inclined surface, and the moving block is provided with an inclined groove, and there is a gap between the inclined surface of the resisting block and the inclined groove of the moving block.

[0011] In a preferred embodiment of the present invention, a tensioning mechanism is further included. The tensioning mechanism is arranged on the mounting plate frame. The tensioning mechanism includes a support, a guide rod, a top rod, a stabilizing frame, a screw rod and a screw sleeve. The support is fixedly connected to the mounting plate frame. A guide rod is rotatably connected between the support and the support plate. The mounting plate frame is slidably connected with a stabilizing frame. The mounting plate frame is rotatably connected with a screw rod. The mounting plate frame is slidably connected with a screw sleeve. The screw sleeve is threadedly connected with the screw rod. A top rod is rotatably connected between the screw sleeve and the stabilizing frame.

[0012] In a preferred embodiment of the present invention, a guiding mechanism is further included. The guiding mechanism is arranged on the mounting plate frame and includes a guide wheel, a film covering, and a guide rod. The guide rod is fixedly connected between the mounting plate frame and the support plate. The guide rod is slidably connected to the moving frame. The moving frame is rotatably connected with a guide wheel, and a film covering is sleeved between the guide wheel and the moving frame. The film covering is in contact and cooperation with the guide wheel.

[0013] In a preferred embodiment of the present invention, a margin mechanism is further included. The margin mechanism is arranged on the guide plate and includes a support block, a sliding frame, a contact rod, and an elastic sheet. The support block is fixedly connected to the guide plate. The support block is slidably connected with a sliding frame. A pair of elastic sheets are fixedly connected between the sliding frame and the support block. A pair of contact rods are fixedly connected to the sliding frame.

[0014] Compared with the prior art, the present invention has the following advantages: 1. Through components such as a bidirectional lead screw and a hole cylinder, the present invention can adapt to foils of different widths and limit both sides of the foil, thereby avoiding problems such as slack, wrinkles, or edge warping of the foil in the width direction during the winding process, and improving the winding quality of this foil tension adjustment device.

[0015] 2. Through components such as a limiting plate and a pushing block, the present invention can intermittently pull the edges of the foil to both sides, so that the foil remains tight and flat in the width direction, avoiding problems such as slack, wrinkles, or edge warping of the foil in the width direction during the winding process, and improving the winding quality of this foil tension adjustment device.

[0016] 3. Through components such as a top rod and a screw rod, the present invention can adjust the tension degree of the foil in the length direction as needed, so as to ensure that the foil remains tight and flat in the length direction during the winding process, and improve the winding quality of this foil tension adjustment device.

[0017] 4. Through components such as a guide wheel and a film covering, the present invention can not only guide the movement of the foil, but also avoid friction between the moving frame and the foil and cause wear of the foil, improving the protection effect of this foil tension adjustment device on the foil.

[0018] 5. Through components such as a contact rod and an elastic sheet, the present invention can not only keep the foil tight and flat in the length direction, but also leave a certain margin for the complete tension of the foil, thereby avoiding the phenomenon that the foil becomes slack or is broken due to the inconsistent unwinding speed of the wire winding machine and the winding speed of the winding component, and improving the practicability and safety of this foil tension adjustment device. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a three-dimensional structural schematic diagram of the present invention.

[0020] Figure 2Schematic three-dimensional structure diagram of the winding machine, winding assembly and support frame of the present invention.

[0021] Figure 3 Schematic three-dimensional structure diagram of components such as the bidirectional lead screw, moving frame and elastic component of the present invention.

[0022] Figure 4 Schematic three-dimensional structure diagram of components such as the elastic component, diversion pipe and hole cylinder of the present invention.

[0023] Figure 5 Schematic three-dimensional structure diagram of components such as the hole cylinder, guide wheel and air pump of the present invention.

[0024] Figure 6 Schematic three-dimensional structure diagram of components such as the limiting plate, moving block and magnetic block of the present invention.

[0025] Figure 7 Schematic three-dimensional structure diagram of components such as the electric push rod, pushing block and telescopic block of the present invention.

[0026] Figure 8 Schematic three-dimensional structure diagram of components such as the bracket, guide rod and ejector rod of the present invention.

[0027] Figure 9 Schematic three-dimensional structure diagram of components such as the guide wheel, film coating and guide rod of the present invention.

[0028] Figure 10 Schematic three-dimensional structure diagram of components such as the support block, sliding frame and contact rod of the present invention.

[0029] Among them, the above-mentioned drawings include the following reference numerals: 1, winding machine; 11, winding assembly; 12, support frame; 13, mounting plate frame; 1301, support plate; 1302, support rod; 14, bidirectional lead screw; 15, moving frame; 1501, guide plate; 16, elastic component; 17, diversion pipe; 18, hole cylinder; 1801, guide wheel; 19, air pump; 2, limiting plate; 21, moving block; 2101, magnetic block; 22, electric push rod; 23, pushing block; 24, telescopic block; 25, abutting block; 3, bracket; 31, guide rod; 32, ejector rod; 33, stabilizing frame; 34, screw; 35, nut sleeve; 4, guide wheel; 41, film coating; 42, guide rod; 5, support block; 51, sliding frame; 52, contact rod; 53, elastic sheet. Detailed implementation manners

[0030] Although the present invention may be described with respect to a particular application or industry, those skilled in the art will recognize a broader applicability of the present invention. Those of ordinary skill in the art will recognize that terms such as above, below, upward, downward, etc. are used to describe the drawings and do not represent a limitation on the scope of the present invention as defined by the appended claims. Any numerical designations such as first or second are merely illustrative and are not intended to limit the scope of the present invention in any way.

[0031] Embodiment 1

[0032] An externally attached foil tension adjustment device applicable to a transformer foil winding machine, as Figures 1 - 5 shown, comprising a winding machine 1, a winding component 11, a support frame 12, a mounting plate frame 13, a support plate 1301, a support rod 1302, a bidirectional lead screw 14, a moving frame 15, a guide plate 1501, an elastic component 16, a diversion pipe 17, a hole cylinder 18, a guide wheel 1801 and an air pump 19. The winding component 11 is installed on the right side of the winding machine 1. A support frame 12 is fixedly connected between the winding machine 1 and the winding component 11. The mounting plate frame 13 is installed on the front top of the support frame 12 by bolts. The support plate 1301 is fixedly connected to the rear side of the mounting plate frame 13. The left and right parts of the rear side of the support plate 1301 are both threadedly connected with support rods 1302. The upper part of the mounting plate frame 13 is rotatably connected with a bidirectional lead screw 14. The front and rear sides of the upper part of the mounting plate frame 13 are both slidably connected with a moving frame 15. The moving frame 15 is threadedly connected with the bidirectional lead screw 14. The left and right sides of the lower part of the moving frame 15 are both rotatably connected with guide wheels 1801. The lower part of the moving frame 15 is slidably connected with a guide plate 1501. Two left and right elastic components 16 are fixedly connected between the guide plate 1501 and the moving frame 15. The left and right sides of the upper part of the guide plate 1501 are both rotatably connected with hole cylinders 18. The air pump 19 is fixedly connected to the rear side of the mounting plate frame 13. A diversion pipe 17 is fixedly connected and communicated between the air pump 19 and the four hole cylinders 18.

[0033] As Figures 3 - 5 shown, wherein arc surfaces are provided on the left side of the lower part of the moving frame 15 and the left side of the guide plate 1501.

[0034] When a worker needs to wind a foil coil, components such as the mounting plate frame 13 can be fixed to the support frame 12 through bolts first. Then, the support rod 1302 can be rotated forward according to the height of the support plate 1301, so that the support rod 1302 rotates and moves downward until it contacts the ground and can provide good support for components such as the support plate 1301. Next, the bidirectional lead screw 14 can be rotated according to the width of the foil material first, so that components such as the front and rear moving frames 15 move toward or away from each other to a suitable position. Then, the foil material can be led out from the winding machine 1, and the foil material passes through between the moving frame 15 and the guide plate 1501 and is connected to the winding assembly 11. At this time, the guide wheel 1801 on the moving frame 15 and the hole cylinder 18 on the guide plate 1501 will cooperate with each other under the action of the elastic assembly 16 and clamp and limit both sides of the foil material, so that the foil material remains tight and flat in the width direction. After that, the winding machine 1 and the winding assembly 11 can be started. The winding machine 1 will continuously release the foil material, while the winding assembly 11 will wind the released foil material to form a foil coil. And the continuous transfer of the foil material from the winding machine 1 to the winding assembly 11 will also drive the guide wheel 1801 and the hole cylinder 18 to rotate. During this period, the worker can also start the air pump 19. The air pump 19 will suck air outward through the diversion pipe 17 and the hole cylinder 18, so that the foil material adheres tightly to the surface of the hole cylinder 18. In this way, the limiting effect of the guide wheel 1801 and the hole cylinder 18 on the foil material can be improved, so as to avoid problems such as slack, wrinkles or edge warping of the foil material in the width direction during the winding process. After the foil coil is made, the foil material can be cut off first and the foil coil can be taken off. Then, the cut-off part of the foil material can be connected to the winding assembly 11 and the next winding can be carried out. When not needed, the bolts can be screwed reversely and the components such as the mounting plate frame 13 can be taken off from the support frame 12.

[0035] Embodiment 2

[0036] On the basis of Embodiment 1, as Figure 6 and Figure 7 shown, there is also a tensioning mechanism. The tensioning mechanism is arranged on the guide plate 1501. The tensioning mechanism includes a limiting plate 2, a moving block 21, a magnetic block 2101, an electric push rod 22, a pushing block 23, a telescopic block 24 and a resisting block 25. The moving block 21 is slidably connected to the upper part of the guide plate 1501. The electric push rod 22 is fixedly connected to the middle part of the guide plate 1501. The telescopic end of the electric push rod 22 is fixedly connected to the moving block 21. The limiting plate 2 is slidably connected to the lower part of the moving frame 15. Magnetic blocks 2101 are fixedly connected to both the front and rear sides of the middle part of the limiting plate 2. Magnetic blocks 2101 are also fixedly connected to both the front and rear parts on the right side of the moving block 21. The two adjacent magnetic blocks 2101 up and down are magnetically attracted and cooperate with each other. Telescopic blocks 24 are slidably connected to both the front and rear sides of the upper part of the moving block 21. A pushing block 23 is fixedly connected between the telescopic ends of the front and rear telescopic blocks 24. A resisting block 25 is fixedly connected to the bottom of the pushing block 23. The moving block 21 and the resisting block 25 are in extrusion cooperation.

[0037] As Figure 7 shown, the top of the pushing block 23 is provided with an inclined surface.

[0038] As Figure 7 shown, the bottom of the abutting block 25 is provided with an inclined surface, the top of the moving block 21 is provided with an inclined groove, and there is a gap between the inclined surface of the abutting block 25 and the inclined groove of the moving block 21.

[0039] During the process of winding the foil coil, the worker can also activate the electric push rod 22, and the electric push rod 22 will drive components such as the moving block 21 to move back and forth. Taking the components such as the moving block 21 at the rear side as an example, when the electric push rod 22 drives the moving block 21 to move backward, since the top of the pushing block 23 at the rear side is provided with an inclined surface that is lower in the front and higher in the rear, at this time, the rear top of the pushing block 23 will cooperate with the limiting plate 2 and slightly clamp the edge of the foil. Therefore, the pushing block 23, the telescopic block 24, and the abutting block 25 will first remain stationary under the action of their own inertia and the frictional force between the pushing block 23 and the foil. Then the moving block 21 will move backward relative to the telescopic block 24 and the abutting block 25. The backward movement of the moving block 21 will squeeze the abutting block 25 through the inclined groove at the top, so that the abutting block 25 and the pushing block 23 move upward, and the telescopic block 24 is stretched accordingly. At this time, the cooperation between the pushing block 23 and the limiting plate 2 can further clamp the edge of the foil. When the moving block 21 continues to move backward under the action of the electric push rod 22 and the abutting block 25 has moved to the frontmost side of the inclined groove, the moving block 21 will forcibly drive components such as the pushing block 23 to move backward. And because the magnetic blocks 2101 on the limiting plate 2 and the moving block 21 attract each other, the limiting plate 2 will move backward with the moving block 21 under the action of the magnetic block 2101. At this time, the pushing block 23 and the limiting plate 2 at the rear side will pull the rear edge of the foil backward, while the pushing block 23 and the limiting plate 2 at the front side will pull the front edge of the foil forward. In this way, the edges of the foil can be pulled to both sides, so that the foil remains tight and flat in the width direction, in order to avoid problems such as slack, wrinkles, or edge warping of the foil in the width direction during the winding process. When the moving block 21 at the rear side moves forward and resets under the action of the electric push rod 22, the pushing block 23, the telescopic block 24, and the abutting block 25 will still first remain stationary under the action of their own inertia and the frictional force between the pushing block 23 and the foil. Then the moving block 21 will move forward relative to the telescopic block 24 and the abutting block 25. At this time, the pushing block 23 and the abutting block 25 will move downward along the inclined groove under the action of their own gravity, and the telescopic block 24 will return to its original state. After the pushing block 23 moves downward and resets, it can no longer cooperate with the limiting plate 2 to clamp the edge of the foil, so as to avoid the pushing block 23 cooperating with the limiting plate 2 to pull the rear edge of the foil forward. Then when the moving block 21 continues to move forward, it will drive components such as the pushing block 23, the telescopic block 24, and the abutting block 25 to move forward and reset. During this period, the limiting plate 2 will also move forward and reset with the moving block 21 under the action of the magnetic block 2101.

[0040] Such as Figure 1 and Figure 8As shown, it further includes a tensioning mechanism. The tensioning mechanism is arranged on the mounting plate frame 13. The tensioning mechanism includes a bracket 3, a guide rod 31, a push rod 32, a stabilizing frame 33, a screw rod 34 and a screw sleeve 35. The bracket 3 is fixedly connected to the left side of the mounting plate frame 13. A guide rod 31 is rotatably connected between the bracket 3 and the support plate 1301. A stabilizing frame 33 is slidably connected to the rear side of the mounting plate frame 13. A screw rod 34 is rotatably connected to the front part of the mounting plate frame 13. A screw sleeve 35 is slidably connected to the front part of the mounting plate frame 13. The screw sleeve 35 is threadedly connected to the screw rod 34. A push rod 32 is rotatably connected between the screw sleeve 35 and the stabilizing frame 33.

[0041] When the worker makes the foil pass through between the moving frame 15 and the guide plate 1501 and connect it to the winding assembly 11, it is necessary to first make the foil pass through between the guide rod 31 and the push rod 32. After the foil is connected to the winding assembly 11, the worker can rotate the screw rod 34 forward as needed, thereby driving the screw sleeve 35, the push rod 32 and the stabilizing frame 33 to move leftward to a suitable position. At this time, the guide rod 31 and the push rod 32 cooperate with each other to control the tension degree of the foil in the length direction, so as to ensure that the foil remains tight and flat in the length direction during the winding process.

[0042] As Figure 1 and Figure 9 shown, it further includes a guiding mechanism. The guiding mechanism is arranged on the mounting plate frame 13. The guiding mechanism includes a guide wheel 4, a film 41 and a guide rod 42. The guide rod 42 is fixedly connected between the mounting plate frame 13 and the support plate 1301. The guide rod 42 is slidably connected to the moving frame 15. A guide wheel 4 is rotatably connected to the upper part of the moving frame 15. A film 41 is sleeved between the guide wheel 4 and the bottom of the moving frame 15. The film 41 is in contact and cooperation with the guide wheel 1801.

[0043] When the worker makes the foil pass through between the moving frame 15 and the guide plate 1501 and connect it to the winding assembly 11, the film 41 will replace the moving frame 15 and the guide wheel 1801 and contact the foil. When the foil moves to the right under the action of the winding machine 1 and the winding assembly 11, the foil will drive the film 41 to rotate counterclockwise through friction, and the counterclockwise rotation of the film 41 will also drive the guide wheel 4 to rotate counterclockwise through friction. In this way, it can not only guide the movement of the foil, but also prevent the moving frame 15 from rubbing against the foil and causing wear of the foil.

[0044] As Figure 1 and Figure 10 shown, it further includes a margin mechanism. The margin mechanism is arranged on the guide plate 1501. The margin mechanism includes a support block 5, a sliding frame 51, a contact rod 52 and a spring piece 53. The support block 5 is fixedly connected to the right side of the guide plate 1501. A sliding frame 51 is slidably connected to the middle of the support block 5. Two left and right spring pieces 53 are fixedly connected between the sliding frame 51 and the support block 5. Contact rods 52 are fixedly connected to both the left and right sides of the top of the sliding frame 51.

[0045] During the process of winding the foil coil, the contact rod 52 and the sliding carriage 51 will press against the foil under the action of the elastic piece 53, so as to ensure that the foil remains taut during the winding process. Since the overall diameter of the winding assembly 11 will continuously increase after winding the foil, the winding speed of the winding assembly 11 will gradually and slowly increase. If the unwinding speed of the winding machine 1 does not increase accordingly, the foil between the moving frame 15 and the winding assembly 11 will become more taut and gradually straighten. At this time, the gradually straightened foil will squeeze the contact rod 52, causing the contact rod 52 and the sliding carriage 51 to move downward, and the elastic piece 53 will be compressed immediately. This can not only keep the foil taut and flat in the length direction, but also leave a certain margin for the complete tautness of the foil, thus avoiding the phenomenon that the foil becomes loose or is broken due to the inconsistent unwinding speed of the winding machine 1 and the winding speed of the winding assembly 11. When the foil coil is wound and the foil is cut off, the contact rod 52 and the sliding carriage 51 will move upward and reset under the action of the elastic piece 53.

[0046] The embodiments of the present invention have been described in detail above in conjunction with the accompanying drawings. However, the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the gist of the present invention.

Claims

1. An external foil tension adjustment device applicable to a transformer foil winding machine, comprising a winding machine (1), a winding machine (1) is equipped with a winding component (11), and a support frame (12) is fixedly connected between the winding machine (1) and the winding component (11), characterized in that: It also includes a mounting plate frame (13). The support frame (12) is bolted with the mounting plate frame (13). The mounting plate frame (13) is fixedly connected with a support plate (1301). The support plate (1301) is threadedly connected with a pair of support rods (1302). The mounting plate frame (13) is rotatably connected with a bidirectional lead screw (14). The mounting plate frame (13) is slidably connected with a pair of moving frames (15). The moving frames (15) are threadedly connected with the bidirectional lead screw (14). The moving frames (15) are rotatably connected with a pair of guide wheels (1801). The moving frames (15) are slidably connected with a guide plate (1501). A pair of elastic components (16) are fixedly connected between the guide plate (1501) and the moving frames (15). The guide plate (1501) is rotatably connected with a pair of hole cylinders (18). The mounting plate frame (13) is fixedly connected with an air pump (19). A diversion pipe (17) is fixedly connected and communicated between the air pump (19) and the pair of hole cylinders (18). It also includes a tensioning mechanism. The tensioning mechanism is arranged on the guide plate (1501). The tensioning mechanism includes a limiting plate (2), a moving block (21), a magnetic block (2101), an electric push rod (22), a pushing block (23), a telescopic block (24) and a resisting block (25). The moving block (21) is slidably connected to the guide plate (1501). The guide plate (1501) is fixedly connected with an electric push rod (22). The telescopic end of the electric push rod (22) is fixedly connected with the moving block (21). The moving frame (15) is slidably connected with the limiting plate (2). The limiting plate (2) is fixedly connected with a pair of magnetic blocks (2101). The moving block (21) is also fixedly connected with a pair of magnetic blocks (2101). The magnetic blocks (2101) are magnetically attracted to each other. The moving block (21) is slidably connected with a pair of telescopic blocks (24). A pushing block (23) is fixedly connected between the telescopic ends of the pair of telescopic blocks (24). The pushing block (23) is fixedly connected with a resisting block (25). The moving block (21) and the resisting block (25) are in extrusion fit. Among them, the pushing block (23) is provided with an inclined surface. Among them, the resisting block (25) is provided with an inclined surface. The moving block (21) is provided with an inclined groove. And there is a gap between the inclined surface of the resisting block (25) and the inclined groove of the moving block (21).

2. The external foil tension adjustment device applicable to the transformer foil winding machine according to claim 1, characterized in that: Among them, both the moving frame (15) and the guide plate (1501) are provided with arc surfaces.

3. The external foil tension adjustment device for a transformer foil winding machine according to claim 2, characterized in that: It also includes a tensioning mechanism. The tensioning mechanism is arranged on the mounting plate frame (13). The tensioning mechanism includes a bracket (3), a guide rod (31), a top rod (32), a stabilizing frame (33), a screw rod (34) and a screw sleeve (35). The bracket (3) is fixedly connected to the mounting plate frame (13). A guide rod (31) is rotatably connected between the bracket (3) and the support plate (1301). The mounting plate frame (13) is slidably connected with a stabilizing frame (33). The mounting plate frame (13) is rotatably connected with a screw rod (34). The mounting plate frame (13) is slidably connected with a screw sleeve (35). The screw sleeve (35) is threadedly connected with the screw rod (34). A top rod (32) is rotatably connected between the screw sleeve (35) and the stabilizing frame (33).

4. The external attached foil tension adjustment device for a transformer foil winding machine as described in claim 3, wherein: It further includes a guiding mechanism which is arranged on the mounting plate frame (13). The guiding mechanism includes a guide wheel (4), a coating film (41) and a guide rod (42). The guide rod (42) is fixedly connected between the mounting plate frame (13) and the support plate (1301). The guide rod (42) is slidably connected with the moving frame (15). The moving frame (15) is rotatably connected with a guide wheel (4). A coating film (41) is sleeved between the guide wheel (4) and the moving frame (15). The coating film (41) is in contact and cooperation with the guide wheel (1801).

5. The external foil tension adjustment device applicable to a transformer foil winding machine according to claim 4, characterized in that: It further includes a margin mechanism which is arranged on the guide plate (1501). The margin mechanism includes a support block (5), a sliding frame (51), a contact rod (52) and an elastic piece (53). The support block (5) is fixedly connected to the guide plate (1501). The support block (5) is slidably connected with the sliding frame (51). A pair of elastic pieces (53) are fixedly connected between the sliding frame (51) and the support block (5). The sliding frame (51) is fixedly connected with a pair of contact rods (52).

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