Wire straightening machine

Abstract

The present invention discloses a steel wire straightening machine, which belongs to the technical field of metal wire processing. It mainly includes a frame, an actuator 1, and an actuator 2. The transfer frame of the polyurethane screen can be locked on the frame. The actuator 1 includes a connecting frame and a top frame. The connecting frame can be lifted and moved relative to the frame in the vertical direction. The top frame is installed on the connecting frame, and the top frame is located above the polyurethane screen. The actuator 2 includes a mounting seat and a support plate. The mounting seat can be lifted and moved relative to the frame in the vertical direction. The support plate is installed on the mounting seat, and the support plate is located below the polyurethane screen. The support plate is used to place the screen frame. A plurality of telescopic members 2 are also arranged on the mounting seat. The output end of the telescopic member 2 can move up and down, and one end face of the top frame facing the polyurethane screen is aligned with the edge contour of the screen frame placed on the support plate. The steel wire straightening machine of the present invention can solve the problem that the relative position between the metal mesh and the screen frame is difficult to adjust in the existing straightening process.

Description

Technical Field

[0001] The invention relates to the technical field of metal wire processing, and in particular to a steel wire straightening machine. Background Art

[0002] Screen printing is a printing technology that uses the basic principle that the slurry is permeable to the patterned part of the screen, while the slurry is not permeable to the non-patterned part.

[0003] refer to Figure 1 As shown, the high-precision laser screen includes a screen frame 101, a polyester screen 102 fixed in the middle of the screen frame 101, and a metal screen 103 arranged on the polyester screen 102. In the early stage of the laser screen manufacturing process, a polyurethane screen needs to be manufactured first. The polyurethane screen includes a transfer frame 104, a polyester screen 102 stretched in the middle of the screen frame 101, and a metal screen 103 arranged on the polyester screen 102. Then, the metal screen 103 on the polyurethane screen needs to be straightened to ensure that the warp and weft threads constituting the metal screen 103 are straightened to avoid the bending of the warp and weft threads affecting the product quality. After the metal screen 103 is straightened, the polyester screen 102 and the metal screen 103 on the polyurethane screen are transferred together to the screen frame 101 whose size is smaller than the transfer frame 104 to form a laser screen; as shown in FIG. Figure 2 However, in the prior art, the metal mesh 103 is generally straightened by pressing the side of the polyester mesh 102 facing away from the mesh frame 101 with the screw 200, so that the polyester mesh 102 is tightened on the mesh frame 101, and the two ends of the warp or weft of the metal mesh 103 are pushed against the polyester mesh 102 by the screw 200, so that the warp or weft of the metal mesh 103 is pulled along the axial direction, causing the warp or weft of the metal mesh 103 to be deformed and straightened, but in the metal mesh 103 During the straightening process, the polyester mesh 102 and the metal mesh 103 are deformed due to being pulled, so that the metal mesh 103 is easily offset relative to the mesh frame 101. Since the polyester mesh 102 is pressed against the mesh frame 101 by the screw 200, moving the mesh frame 101 will affect the previous state of the polyester mesh 102 and the metal mesh 103 being stretched tight on the mesh frame 101. Therefore, it is not convenient to adjust the relative position between the metal mesh 103 on the polyester mesh 102 and the mesh frame 101 in the prior art.

[0004] Therefore, it is necessary to provide a new steel wire straightening machine. Summary of the invention

[0005] Based on the above problems existing in the prior art, an object of the embodiments of the present invention is to provide a wire straightening machine that can solve the problem that the relative position between the metal mesh and the mesh frame is difficult to adjust during the existing straightening process.

[0006] To achieve the above-mentioned purpose, the technical solution adopted by the present invention is: to provide a wire straightening machine, including a frame, an actuator 1 and an actuator 2, the transfer frame of the polyurethane screen can be locked on the frame, the actuator 1 includes a connecting frame and a top frame, the connecting frame can be lifted and moved relative to the frame in a vertical direction, the top frame is installed on the connecting frame, and the top frame is located above the polyurethane screen, the actuator 2 includes a mounting seat and a support plate, the mounting seat can be lifted and moved relative to the frame in a vertical direction, the support plate is installed on the mounting seat, and the support plate is located below the polyurethane screen, the support plate is used to place the screen frame, and the mounting seat is also provided with a plurality of extension The telescopic member 2 has an output end that can be telescopic, and an end face of the top frame that faces the polyurethane screen is aligned with the edge contour of the screen frame placed on the support plate. When the top frame is lowered along with the connecting frame to the lower side of the top frame and attached to the top of the polyester screen of the polyurethane screen, the polyester screen located at the outer portion of the metal screen is blocked by the edge of the upper top frame. Therefore, when the telescopic member 2 extends the output end, the polyester screen is pushed upward toward the top frame by the output end of the telescopic member 2, so that the polyester screen is stretched straight on the top frame, so that the polyester screen and the metal screen are maintained in a fixed state relative to the top frame. When the screen frame position needs to be adjusted, the screen frame can be translated on the support plate to adjust the relative position between the screen frame and the metal screen.

[0007] Furthermore, a cutting knife is installed on one side of the top frame near the raised portion. The cutting knife slides on the top frame in the vertical direction. The cutting knife and the top frame are connected by a telescopic member. The cutting knife is provided with a cutting blade protruding from the position of the polyester net below.

[0008] Furthermore, the overall contour shape of the blade portion is adapted to the outer edge contour shape of the screen frame.

[0009] Furthermore, when the telescopic member is extended to drive the cutting knife to move downward to the second position, the cutting knife is close to the polyester mesh, and the cutting edge of the cutting knife protrudes downward from the raised portion. When the telescopic member is retracted to drive the cutting knife to move upward to the first position, the cutting knife is away from the polyester mesh, and the raised portion protrudes downward from the cutting edge of the cutting knife.

[0010] Furthermore, there are a plurality of telescopic members 2, and the plurality of telescopic members 2 are arranged opposite to each other in pairs around the metal mesh.

[0011] Furthermore, the second telescopic member is a piston-type linear actuator unit.

[0012] Furthermore, the frame is provided with a clamping piece for locking the transfer frame, and there are multiple clamping pieces, which are distributed on two opposite sides of the transfer frame of the polyurethane screen.

[0013] Furthermore, the second actuator also includes a lifting driver installed on the frame, and the mounting seat is connected to the output end of the lifting driver.

[0014] Furthermore, the telescopic member 1 is a piston-type linear actuator unit.

[0015] Furthermore, an outer edge of the cutting knife is provided with an avoidance inclined wall, the avoidance inclined wall gradually approaches the inner side of the cutting knife from top to bottom, and the avoidance inclined wall meets the second telescopic member below.

[0016] The beneficial effects of the present invention are as follows: the wire straightening machine provided by the present invention comprises a frame, an actuator 1, and an actuator 2, the transfer frame of the polyurethane screen can be locked on the frame, the actuator 1 comprises a connecting frame and a top frame, the connecting frame can be lifted and moved relative to the frame in a vertical direction, the top frame is installed on the connecting frame, and the top frame is located above the polyurethane screen, the actuator 2 comprises a mounting seat and a support plate, the mounting seat can be lifted and moved relative to the frame in a vertical direction, the support plate is installed on the mounting seat, and the support plate is located below the polyurethane screen, the support plate is used to place the screen frame, and a plurality of telescopic members 2 are also arranged on the mounting seat, the output end of the telescopic member 2 can move up and down, an end face of the top frame facing the polyurethane screen is aligned with the edge contour of the screen frame placed on the support plate, and the support plate can rise and fall with the mounting seat The telescopic member 2 is driven to approach the bottom of the polyester mesh of the polyurethane screen. At the same time, when the top frame is lowered along with the connecting frame to the lower side of the top frame and attached to the top of the polyester mesh of the polyurethane screen, the polyester mesh located at the outer part of the metal mesh is blocked by the edge of the upper top frame. Therefore, when the output end of the telescopic member 2 is extended, the part of the polyester mesh close to the edge of the mesh frame is pushed outward and stretched upward to be deformed. The stretching deformation of the polyester mesh will cause the warp or weft of the metal mesh to be pulled axially, causing the warp or weft of the metal mesh to be stretched straight. Since the polyester mesh is pushed upward toward the top frame by the output end of the telescopic member 2, the polyester mesh will be stretched straight on the top frame, so that the polyester mesh and the metal mesh are maintained in a fixed state relative to the top frame. When the position of the mesh frame needs to be adjusted, the mesh frame can be translated on the support plate to adjust the relative position of the mesh frame and the metal mesh. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0018] Figure 1 It is a schematic diagram of the structure of an existing polyurethane screen and shows the position of the screen frame.

[0019] Figure 2 It is a schematic diagram of the process of straightening the metal mesh in the prior art.

[0020] Figure 3 A schematic diagram of the three-dimensional structure of a wire straightening machine provided in an embodiment of the present invention.

[0021] Figure 4 A front view of a wire straightening machine provided in an embodiment of the present invention.

[0022] Figure 5 For along Figure 4 Cross-sectional view in EE direction.

[0023] Figure 6 for Figure 5 An enlarged schematic diagram of area A in the middle shows that the cutting knife is located in the second position.

[0024] Figure 7 A schematic diagram of the wire straightening machine provided in an embodiment of the present invention after omitting actuator 1 and actuator 2.

[0025] Figure 8 A schematic diagram of the three-dimensional structure of an actuator 1 provided in an embodiment of the present invention.

[0026] Fig. 9 for Figure 8 An exploded view of actuator 1 is shown.

[0027] Fig.10 for Figure 8 The front view of the actuator 1 is shown.

[0028] Fig.11 For along Fig.10 Cross-sectional view in the FF direction.

[0029] Fig.12 for Fig.11 An enlarged schematic diagram of area B in the middle shows that the cutting knife is located in the first position.

[0030] Fig.13 A schematic diagram of the three-dimensional structure of the actuator 2 provided in an embodiment of the present invention.

[0031] Fig.14 for Fig.13 A cross-sectional view of actuator 2 is shown.

[0032] Among them, the reference numerals in the figure are: 101, mesh frame; 102, polyester mesh; 103, metal mesh; 104, transfer frame; 200, screw; 1, frame; 11, clamping member; 2, actuator 1; 21, connecting frame; 22, top frame; 221, raised portion; 23, cutting knife; 231, blade; 232, avoidance inclined wall; 24, telescopic member 1; 3, actuator 2; 31, mounting seat; 32, telescopic member 2; 321, ejector pin; 33, support plate; 34, lifting drive; 4, fitting surface. DETAILED DESCRIPTION

[0033] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0034] It should be noted that when an element is referred to as being "connected to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0035] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0036] It should be understood that the orientation or position relationship indicated by terms such as "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present invention 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.

[0037] Reference throughout the specification to "one embodiment" or "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment of the present application. Thus, when the phrases "in one embodiment," "in some embodiments," or "in some of these embodiments" appear in various places throughout the specification, not all references are to the same embodiment. Furthermore, in one or more embodiments, the particular features, structures, or characteristics may be combined in any suitable manner.

[0038] Please refer to Figures 3 to 14As shown, a wire straightening machine provided by the present invention is now described. The wire straightening machine includes a frame 1, an actuator 1 2 and an actuator 2 3. The transfer frame 104 of the polyurethane screen can be locked on the frame 1. The actuator 1 2 includes a connecting frame 21 and a top frame 22. The connecting frame 21 can be lifted and moved relative to the frame 1 in the vertical direction. The top frame 22 is installed on the connecting frame 21, and the top frame 22 is located above the polyurethane screen. The actuator 2 3 includes a mounting seat 31 and a support plate 33. The mounting seat 31 can be lifted and moved relative to the frame 1 in the vertical direction. The support plate 33 is mounted on the mounting seat 31, and the support plate 33 is located below the polyurethane screen. The support plate 33 is used to place the screen frame 101. The mounting seat 31 is also provided with a plurality of telescopic members 32. The output end of the telescopic members 32 can be telescopic. One end surface of the top frame 22 facing the polyurethane screen is aligned with the edge contour of the screen frame 101 placed on the support plate 33. The support plate 33 can rise with the mounting seat 31 and drive the telescopic members 32 to move upward. 2 is close to the bottom of the polyester mesh 102 of the polyurethane screen, and at the same time, the top frame 22 is lowered with the connecting frame 21 to the lower side of the top frame 22 and attached to the top of the polyester mesh 102 of the polyurethane screen, so that the polyester mesh 102 located at the outer part of the metal mesh 103 is blocked by the edge of the upper top frame 22, so that when the telescopic member 232 extends the output end, it will push the part of the polyester mesh 102 near the edge of the mesh frame 101 outward and upward to be stretched and deformed, and the stretching deformation of the polyester mesh 102 will cause the metal mesh 103 to be stretched. The warp or weft of the metal mesh 103 is pulled in the axial direction, so that the warp or weft of the metal mesh 103 is stretched straight. Since the polyester mesh 102 is pushed upward toward the top frame 22 by the output end of the telescopic member 32, the polyester mesh 102 is stretched straight on the top frame 22, so that the polyester mesh 102 and the metal mesh 103 are maintained in a fixed state relative to the top frame 22. When the position of the mesh frame 101 needs to be adjusted, the mesh frame 101 can be translated on the support plate 33 to adjust the relative position between the mesh frame 101 and the metal mesh 103.

[0039] In some embodiments, the connecting frame 21 is connected to the frame 1 through a movable platform, so that the connecting frame 21 can at least be lifted and lowered relative to the frame 1 in the vertical direction. The movable platform can be a Z-axis movable platform, an XZ-axis movable platform, a YZ-axis movable platform or an XYZ-axis movable platform.

[0040] like Fig. 9 As shown, in some of the embodiments, the overall shape of the top frame 22 is adapted to the overall shape of the screen frame 101, so that the top frame 22 can replace the screen frame 101 so that the polyester screen 102 of the polyurethane screen can be stretched on the top frame 22. Specifically, in the present embodiment, the top frame 22 is a square frame structure adapted to the shape of the screen frame 101.

[0041] like Fig.11 and Fig.12As shown, in some embodiments, a protrusion 221 is provided on the side of the top frame 22 facing the polyurethane screen, and the overall contour shape of the protrusion 221 is adapted to the edge contour shape of the screen frame 101. Specifically, in this embodiment, the overall contour shape of the protrusion 221 is a square frame structure adapted to the outer edge shape of the screen frame 101, and the cross-section of the outer surface of the protrusion 221 is a convex structure, such as Figure 6 As shown, the cross-sectional vertex contour of the raised portion 221 surrounds the outside of the inner edge contour of the mesh frame 101, so that when the polyester mesh 102 is stretched on the raised portion 221 on the top frame 22, the stretched area of ​​the polyester mesh 102 can simultaneously fit with the end surface close to the mesh frame 101 to form a fitting surface 4, so that in the subsequent process, the polyester mesh 102 can be bonded to the end surface close to the mesh frame 101 by coating the fitting surface 4 with glue. It can be understood that after the metal mesh 103 on the polyurethane screen is straightened, the aluminum frame 101 can be first aligned with the metal mesh 103 and attached to the lower end surface of the rolled polyester mesh 102, and then the bonding surface 4 between the mesh frame 101 and the polyester mesh 102 is coated with glue to glue the mesh frame 101 and the polyester mesh 102 together, and then the polyester mesh 102 of the polyurethane screen is cut along the outer edge of the mesh frame 101 to obtain a preliminary laser screen, so that the actuator 2 can not only be used to straighten the polyester mesh 102, but also can perform the cutting process on the polyester mesh 102 after the polyester mesh 102 is bonded to the mesh frame 101, saving process time.

[0042] like Fig.11 and 12 As shown, in some embodiments, a cutting knife 23 is further installed on one side of the top frame 22 near the raised portion 221. The cutting knife 23 is slidably fitted on the top frame 22 along the vertical direction. The cutting knife 23 and the top frame 22 are connected by a telescopic member 24. The cutting knife 23 is provided with a cutting blade 231 protruding near the lower polyester net 102. Fig. 9 As shown, the overall contour shape of the blade 231 is adapted to the outer edge contour shape of the screen frame 101, as shown in FIG. Figure 6 As shown in FIG. 2 , when the extension of the telescopic member 24 drives the cutting knife 23 to move downward to the second position, the cutting knife 23 approaches the polyester mesh 102, and the blade 231 of the cutting knife 23 protrudes downward from the protruding portion 221, so that the blade 231 of the cutting knife 23 applies a shearing force to the polyester mesh 102. In addition, the blade 231 intersects with the outer edge of the mesh frame 101 below, and also applies a shearing effect along the outer edge of the mesh frame 101 to the polyester mesh 102, so that the polyester mesh 102 and the metal mesh 103 originally on the polyurethane screen are transferred to the mesh frame 101, as shown in FIG. Fig.12As shown, when the retraction of the telescopic member 1 24 drives the cutting knife 23 to move upward to the first position, the cutting knife 23 is far away from the polyester net 102, and the protrusion 221 protrudes downward from the blade 231 of the cutting knife 23, so that the blade 231 of the cutting knife 23 is not easy to contact the polyester net 102 when the cutting knife 23 is in the first position, thereby preventing the polyester net 102 from being accidentally damaged. More specifically, the blade 231 is located at the inner edge of the cutting knife 23. In addition, because the output end of the telescopic member 2 32 previously extended to push up the part of the polyester net 102 outside the edge of the net frame 101, the part of the polyester net 102 outside the edge of the net frame 101 is close to the blade 231 of the cutting knife 23, which helps the cutting knife 23 to move downward a short distance to cut the part of the polyester net 102 outside the edge of the net frame 101.

[0043] like Figure 6 As shown, in some of the embodiments, the outer edge of the cutting knife 23 is provided with an avoidance inclined wall 232, and the avoidance inclined wall 232 gradually approaches the inner side of the cutting knife 23 from top to bottom, and the avoidance inclined wall 232 meets the lower telescopic member 231, so that when the output end of the telescopic member 232 extends out and pushes against the polyester net 102 above to generate an upward deformation displacement, the design of the avoidance inclined wall 232 can better provide more displacement distance for the output end of the telescopic member 232, so that the telescopic member 232 can exert sufficient pulling force on the polyester net 102 to straighten the metal net 103.

[0044] like Figure 6 As shown, in some embodiments, the telescopic member 24 is a piston-type linear actuator, which makes the structure compact, helps to reduce the space occupied by the telescopic member 24, and enables the telescopic member 24 to have a sufficiently fast displacement speed to drive the cutting knife 23 to complete a highly uniform shearing work. It can be understood that the piston-type linear actuator can be pneumatic, hydraulic or mechanical.

[0045] like Fig.13 As shown, in some embodiments, there are multiple telescopic members 2 32, and the multiple telescopic members 2 32 are arranged in pairs around the metal mesh 103, so that when the output ends of the two opposite telescopic members 2 32 extend to push against the polyester mesh 102, the output ends of the two telescopic members 2 32 will simultaneously apply a back pulling force on the opposite sides of the metal mesh 103, so that the two ends of the warp or weft of the metal mesh 103 are pulled along the axial direction, so that the warp or weft of the metal mesh 103 tends to stretch in a straight line. In this embodiment, the metal mesh 103 is composed of interlaced warps and wefts that are perpendicular to each other, so the multiple telescopic members 2 32 are distributed in four rows, and the two opposite telescopic members 2 32 are linked, that is, the output ends of the two opposite telescopic members 2 32 can be driven to perform telescopic actions synchronously.

[0046] In some of the embodiments, the telescopic member 2 32 is a piston-type linear actuator, which makes the structure compact, helps to reduce the distance between two adjacent telescopic members 2 32, makes the contact surface of the telescopic member 2 32 on the polyester mesh 102 smaller, and helps to accurately straighten the metal mesh 103.

[0047] like Figure 6 As shown, in some of the embodiments, a pin 321 with a smaller diameter is provided on the output end of the second telescopic member 32. The pin 321 helps to reduce the contact surface with the polyester mesh 102 and achieve precise partition adjustment.

[0048] like Figure 1 and 2 As shown, in some embodiments, a clamping member 11 for locking the transfer frame 104 is provided on the frame 1, and the clamping member 11 has a plurality of clamping members 11, and the plurality of clamping members 11 are distributed on two opposite sides of the transfer frame 104 of the polyurethane screen, so that the two opposite sides of the transfer frame 104 are limited by the clamping members 11 respectively, so that the transfer frame 104 is locked on the frame 1 at least in the vertical direction, and the transfer frame 104 is prevented from moving up and down when the telescopic member 2 32 pushes the polyester net 102 on the transfer frame 104. Specifically, in the present embodiment, the clamping member 11 has a C-shaped structure, and when one side of the transfer frame 104 is received in the C-shaped opening of the clamping member 11, the transfer frame 104 is limited in the upper, lower and one side. Through the two relatively arranged clamping members 11, the transfer frame 104 is limited in the upper, lower, left and right directions, so that the transfer frame 104 can only move in the front and rear directions to facilitate the loading and unloading of the transfer frame 104.

[0049] refer to Fig.13 and Fig.14 As shown, in some embodiments, the actuator 2 3 also includes a lifting driver 34 installed on the frame 1, and the mounting seat 31 is connected to the output end of the lifting driver 34. The lifting driver 34 is used to drive the mounting seat 31 to perform linear reciprocating motion in the vertical direction, so as to lift the screen frame 101 placed on the support plate 33 up and down in the vertical direction, and at the same time drive the telescopic member 2 32 to approach or move away from the polyurethane screen above. In this embodiment, the lifting driver 34 is a cylinder.

[0050] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A wire straightening machine, characterized in that: The invention comprises a frame, an actuator 1 and an actuator 2, wherein the transfer frame of the polyurethane screen can be locked on the frame, the actuator 1 comprises a connecting frame and a top frame, the connecting frame can be lifted and moved relative to the frame in a vertical direction, the top frame is installed on the connecting frame, and the top frame is located above the polyurethane screen, the actuator 2 comprises a mounting seat and a support plate, the mounting seat can be lifted and moved relative to the frame in a vertical direction, the support plate is installed on the mounting seat, and the support plate is located below the polyurethane screen, the support plate is used to place the screen frame, and a plurality of telescopic members 2 are also arranged on the mounting seat, the output end of the telescopic member 2 can be telescopic, an end face of the top frame facing the polyurethane screen is aligned with the edge contour of the screen frame placed on the support plate, when the top frame is lowered with the connecting frame to the lower side of the top frame and attached to the top of the polyester screen of the polyurethane screen, the polyester screen located at the outer peripheral part of the metal screen is blocked by the edge of the upper top frame, so that when the telescopic member 2 extends the output end, due to The polyester net is pushed upward toward the top frame by the output end of the telescopic member 2, so that the polyester net is stretched straight on the top frame, so that the polyester net and the metal net are maintained in a fixed state relative to the top frame. When the position of the net frame needs to be adjusted, the net frame can be translated on the support plate to adjust the relative position between the net frame and the metal net. A protrusion is provided on the side of the top frame facing the polyurethane screen, and a cutting knife is also installed on the side of the top frame close to the protrusion, and the cutting knife is slidably matched on the top frame along the vertical direction. The cutting knife and the top frame are connected by a telescopic member 1. The position of the cutting knife close to the lower polyester net is convexly provided with a blade for cutting, and the overall contour shape of the blade is adapted to the outer edge contour shape of the net frame. When the telescopic member 1 is extended to drive the cutting knife to move downward to the second position, that is, the cutting knife is close to the polyester net, and the blade of the cutting knife protrudes downward from the protrusion. When the telescopic member 1 is retracted to drive the cutting knife to move upward to the first position, that is, the cutting knife is away from the polyester net, and the protrusion protrudes downward from the blade of the cutting knife.

2. The wire straightening machine according to claim 1, characterized in that: There are a plurality of telescopic components 2, and the plurality of telescopic components 2 are arranged opposite to each other in pairs around the metal mesh.

3. The wire straightening machine according to claim 1, characterized in that: The second telescopic member is a piston-type linear actuator.

4. The wire straightening machine according to claim 1, characterized in that: The frame is provided with a clamping piece for locking the transfer frame, and there are a plurality of clamping pieces, which are distributed on two opposite sides of the transfer frame of the polyurethane screen.

5. The wire straightening machine according to claim 1, characterized in that: The second actuator also includes a lifting driver installed on the frame, and the mounting seat is connected to the output end of the lifting driver.

6. The wire straightening machine according to claim 1, characterized in that: The telescopic member 1 is a piston-type linear actuator.

7. The wire straightening machine according to claim 1, characterized in that: The outer edge of the cutting knife is provided with an avoidance inclined wall, and the avoidance inclined wall gradually approaches the inner side of the cutting knife from top to bottom, and the avoidance inclined wall meets the second telescopic member below.

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