A wire pressing structure of a drawing machine tower wheel

Abstract

The utility model provides a kind of wire drawing machine tower wheel line pressing structure, belong to wire drawing machine technical field, the wire drawing machine tower wheel line pressing structure includes tower wheel body and the line pressing block being set in the line pressing groove of tower wheel body outer circumferential surface, line pressing block is connected with tower wheel body by hinged shaft and realizes rotary activity, the curvature radius of the arc inner side surface of line pressing block is less than the curvature radius of tower wheel body outer circumferential surface, when wire rod passes through line pressing groove, line pressing block is automatically adjusted pressing angle according to wire rod tension and forms clamping cooperation with line pressing groove bottom surface, line pressing block adopts crescent shape structure and both sides edge is tapered contraction, hinged shaft passes through line pressing block geometric center and is fixed on line pressing groove two side walls, line pressing groove bottom surface is equipped with the convex part of smaller curvature radius for enhancing the positioning effect to wire rod, line pressing block outer side surface is the plane structure that is tangent to tower wheel body outer circumferential surface, the utility model solves the technical problem that wire drawing machine tower wheel wire rod clamping force instability leads to wire rod skidding.

Description

Technical Field

[0001] This utility model belongs to the field of wire drawing machine technology, and specifically relates to a wire drawing machine tower wheel pressing structure. Background Technology

[0002] In the wire drawing process, the pulley, as a key transmission and guiding component, primarily functions to drive the wire through friction and apply necessary tension control. Traditional pulley clamping structures typically employ a fixed clamping groove design, with the groove directly machined onto the outer circumference of the pulley body. As the wire passes through the pulley, it is constrained by the geometry of the clamping groove. This fixed clamping groove structure is widely used in metal wire drawing and other processes, achieving gradual wire diameter reduction through the coordination of multiple pulleys. However, in actual production, the wire tension dynamically fluctuates during drawing due to factors such as drawing speed, die wear, and changes in wire material. Fixed clamping grooves cannot automatically adjust the clamping force based on these tension variations.

[0003] In current wire drawing production, due to the lack of a flexible clamping adjustment mechanism in the fixed wire groove structure, when the wire tension suddenly increases, the clamping force of the wire groove is insufficient, causing the wire to slip on the surface of the pulley, resulting in unstable wire drawing speed and affecting the dimensional accuracy and surface quality of the wire. On the other hand, when the wire tension decreases, the fixed wire groove may exert excessive constraint on the wire, increasing frictional resistance and energy consumption. Utility Model Content

[0004] In view of this, the present invention provides a wire drawing machine tower wheel pressing structure, which can solve the technical problem of wire slippage caused by the unstable clamping force of the wire drawing machine tower wheel on the wire in the prior art.

[0005] This utility model is implemented as follows:

[0006] This utility model provides a wire pressing structure for a wire drawing machine's tower wheel. The tower wheel has a tower wheel body with multiple pressing grooves on its outer circumferential surface. Each pressing groove contains a pressing block, which is connected to the tower wheel body via a hinge shaft. This hinge shaft supports the pressing block's rotation around the center of the hinge shaft. The inner surface of the pressing block has an arc-shaped structure. When the drawn wire passes through the pressing groove, the arc-shaped inner surface of the pressing block forms a clamping fit with the bottom surface of the pressing groove on the tower wheel body. The radius of curvature of the arc-shaped inner surface of the pressing block is smaller than the radius of curvature of the outer circumferential surface of the tower wheel body.

[0007] The technical advantages of the wire pressing structure of the drawing machine tower wheel provided by this utility model are as follows: By connecting the pressing block and the tower wheel body with a hinge shaft, the pressing block can rotate around the center of the hinge shaft. When the drawn wire passes through the pressing groove, the arc-shaped inner side of the pressing block can automatically adjust the pressing angle according to the tension of the wire, forming a flexible clamping fit with the bottom surface of the pressing groove of the tower wheel body. At the same time, since the radius of curvature of the arc-shaped inner side of the pressing block is smaller than the radius of curvature of the outer circumference of the tower wheel body, the wire forms a tighter contact in the pressing groove, effectively improving the clamping stability of the wire and preventing the wire from slipping during high-speed drawing.

[0008] Based on the above technical solution, the wire drawing machine tower wheel pressing structure of this utility model can be further improved as follows:

[0009] Wherein, the depth of the arc-shaped inner side of the pressure block along the radial direction of the tower wheel body is greater than the depth of the pressure groove along the radial direction of the tower wheel body.

[0010] The beneficial effects of adopting the above-mentioned improvement scheme are as follows: by making the depth of the arc-shaped inner side of the pressure block along the radial direction of the tower wheel body greater than the depth of the pressure groove along the radial direction of the tower wheel body, the pressure block can form a sufficient pressing stroke in the pressure groove. When the wire is subjected to tension, the pressure block can penetrate deeper into the pressure groove, increasing the contact area between the pressure block and the wire, thereby improving the clamping force and ensuring that the wire will not shift due to tension fluctuations during the wire drawing process, thus ensuring the stability of the wire drawing process.

[0011] Furthermore, the bottom surface of the pressure groove of the tower wheel body is provided with a protrusion, the radius of curvature of which is smaller than the radius of curvature of other parts of the bottom surface of the pressure groove.

[0012] The beneficial effects of adopting the above-mentioned improvement scheme are as follows: by setting a protrusion on the bottom surface of the pressure groove of the tower wheel body, and the radius of curvature of the protrusion is smaller than the radius of curvature of other parts of the bottom surface of the pressure groove, the wire can form a line contact with the protrusion when passing through the pressure groove. This line contact structure can generate greater pressure in a smaller contact area, effectively enhancing the positioning effect of the wire. At the same time, the protrusion can provide a certain guiding effect on the wire, keeping the wire in a centered position in the pressure groove, and avoiding the problem of wire deflection or jumping out of the groove during the wire drawing process.

[0013] Furthermore, the pressure block is crescent-shaped.

[0014] The beneficial effects of adopting the above-mentioned improvement scheme are as follows: by designing the wire clamping block into a crescent shape, the overall structure of the wire clamping block can better fit the outer contour of the wire. The arc-shaped inner surface of the crescent shape can maintain contact with the wire within a larger circumferential angle range, increasing the effective clamping area. At the same time, the crescent-shaped structure allows the wire clamping block to generate a more uniform stress distribution when subjected to the tension of the wire, avoiding stress concentration and extending the service life of the wire clamping block. Furthermore, the crescent-shaped wire clamping block can rotate more smoothly.

[0015] Furthermore, the two sides of the pressure block have a tapered, tapered structure.

[0016] The beneficial effects of adopting the above-mentioned improvement scheme are as follows: by designing the two sides of the pressure block as a tapered contraction structure, the pressure block can form a progressive pressing effect when it comes into contact with the wire. The tapered contraction structure can guide the wire smoothly into the center of the pressure groove, avoiding surface damage caused by sudden compression when the wire enters the pressure groove. At the same time, the tapered contraction structure can also reduce the frictional resistance between the pressure block and the wire, reduce energy loss during the wire drawing process, and make the movement of the wire in the pressure groove smoother.

[0017] Furthermore, the hinge shaft passes through the geometric center of the pressure block, and both ends of the hinge shaft are fixed to the two side walls of the pressure groove.

[0018] The beneficial effects of adopting the above-mentioned improvement scheme are as follows: by making the hinge shaft pass through the geometric center of the pressure block and fixing both ends of the hinge shaft to the two side walls of the pressure groove, the pressure block can rotate symmetrically around its geometric center when rotating. This symmetrical rotation method can ensure that the pressure block generates a balanced torque distribution when subjected to the tension of the wire, avoiding the pressure block from tilting or jamming. At the same time, the structure of fixing the hinge shaft to the two side walls of the pressure groove can provide stable support for the pressure block, ensuring that the pressure block maintains good rotational flexibility during long-term use.

[0019] Furthermore, the outer surface of the pressure block has a planar structure, which is tangent to the outer peripheral surface of the tower wheel body.

[0020] The beneficial effects of adopting the above-mentioned improvement scheme are as follows: by designing the outer side of the pressure block as a planar structure, and the planar structure being tangent to the outer peripheral surface of the tower wheel body, the pressure block can smoothly transition with the outer peripheral surface of the tower wheel body when not in operation, avoiding interference from the protruding structure to the drawing wire or other components. At the same time, the outer side of the planar structure can provide a stable support surface when the pressure block is subjected to external force, preventing the pressure block from rotating excessively during rotation, ensuring that the pressure block is always within a reasonable working angle range, and improving the working reliability of the pressure structure.

[0021] Furthermore, the tower wheel body is made of metal.

[0022] The beneficial effects of adopting the above-mentioned improvement scheme are as follows: by using metal materials to make the tower wheel body, the tower wheel body has sufficient mechanical strength and rigidity to withstand the huge tensile and compressive forces generated by the wire during the wire drawing process. At the same time, the metal material has good wear resistance and can maintain the geometric accuracy of the pressure groove under long-term high-speed rotation and friction conditions, avoiding the problem of reduced pressure effect caused by wear of the tower wheel body. In addition, the metal material also has good thermal conductivity, which is conducive to the rapid dissipation of heat generated during the wire drawing process and prevents local overheating.

[0023] Furthermore, the pressure block is made of a wear-resistant alloy material.

[0024] The beneficial effects of adopting the above-mentioned improvement scheme are as follows: by using wear-resistant alloy material to make the wire pressing block, the wire pressing block can maintain a long service life under working conditions of frequent contact and friction with the wire. The wear-resistant alloy material has high hardness and excellent wear resistance, which can effectively resist the friction of the wire surface and avoid the change of curvature radius of the inner arc surface of the wire pressing block due to wear, ensuring that the wire pressing block can maintain stable clamping performance for a long time. At the same time, the wear-resistant alloy material also has good impact resistance and can withstand the impact load generated by the tension fluctuation of the wire during the wire drawing process.

[0025] Furthermore, the width of the groove opening gradually increases outward along the radial direction of the tower wheel body.

[0026] The beneficial effects of adopting the above-mentioned improvement scheme are as follows: by gradually increasing the width of the crimping groove outward along the radial direction of the tower wheel body to form a trumpet-shaped structure, the wire can obtain a larger guide space when entering the crimping groove, reducing the difficulty of the wire entering the crimping groove and avoiding collision or jamming of the wire with the edge of the crimping groove due to alignment deviation during high-speed movement. At the same time, the gradually increasing groove width can also provide more space for the rotation of the crimping block, allowing the crimping block to freely adjust the angle according to the change of wire tension, thereby improving the adaptability and working stability of the crimping structure.

[0027] Compared with the prior art, the beneficial effects of the wire drawing machine tower wheel pressure structure provided by this utility model are as follows: This utility model sets a pressure block that can rotate around the hinge axis in the pressure groove of the tower wheel body, and designs the arc-shaped inner side of the pressure block with a curvature radius smaller than the curvature radius of the outer circumference of the tower wheel body. This allows the pressure block to automatically adjust the clamping angle between itself and the wire according to the change of wire tension. When the wire tension increases, the pressure block automatically increases the clamping force under the action of wire tension, enhancing the clamping effect on the wire. When the wire tension decreases, the pressure block automatically returns to its original position, reducing the pressure on the wire and avoiding excessive constraint.

[0028] The hinged connection structure between the pressure block and the tower wheel body enables dynamic adaptive adjustment of the pressure force, solving the problem that traditional fixed pressure grooves cannot adjust the clamping force according to changes in working conditions. At the same time, the special curvature design of the arc-shaped inner side of the pressure block enables the wire to form stable multi-point contact in the pressure groove, increasing the effective friction area and improving the anti-slip ability. Moreover, the crescent-shaped structure and tapered shrinking edge design of the pressure block can produce a progressive pressing effect and good guiding effect on the wire, allowing the wire to smoothly enter the center position of the pressure groove and avoiding damage to the wire surface. Attached Figure Description

[0029] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments of this utility model will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0030] Figure 1 This is a top view of a wire drawing machine tower wheel pressing structure;

[0031] Figure 2 A cross-sectional view of the wire pressing groove in the wire pressing structure of a wire drawing machine tower wheel;

[0032] Figure 3 A cross-sectional view of the wire pressing groove in the wire pressing structure of a wire drawing machine tower wheel;

[0033] The attached diagram lists the components represented by each number as follows:

[0034] 1. Tower wheel body; 2. Pressure block; 3. Hinge shaft; 4. Pressure groove. Detailed Implementation

[0035] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings.

[0036] like Figure 1-3 The image shows an embodiment of a wire drawing machine tower wheel pressure structure provided by this utility model. In this embodiment, there is a tower wheel body 1, and multiple pressure grooves 4 are provided on the outer circumferential surface of the tower wheel body. Each pressure groove contains a pressure block 2. The pressure block is connected to the tower wheel body through a hinge shaft 3, which supports the pressure block to rotate around the center of the hinge shaft. The inner side of the pressure block has an arc-shaped structure. When the drawn wire passes through the pressure groove, the arc-shaped inner side of the pressure block forms a clamping fit with the bottom surface of the pressure groove of the tower wheel body. The radius of curvature of the arc-shaped inner side of the pressure block is smaller than the radius of curvature of the outer circumferential surface of the tower wheel body.

[0037] In the above technical solution, the depth of the arc-shaped inner side of the pressure block along the radial direction of the tower wheel body is greater than the depth of the pressure groove along the radial direction of the tower wheel body.

[0038] Furthermore, in the above technical solution, the bottom surface of the pressure groove of the tower wheel body is provided with a protrusion, and the radius of curvature of the protrusion is smaller than the radius of curvature of other parts of the bottom surface of the pressure groove.

[0039] Furthermore, in the above technical solution, the pressure block is crescent-shaped.

[0040] Furthermore, in the above technical solution, the two sides of the pressure block have a tapered contraction structure.

[0041] Furthermore, in the above technical solution, the hinge shaft passes through the geometric center of the pressure block, and both ends of the hinge shaft are fixed to the two side walls of the pressure groove.

[0042] Furthermore, in the above technical solution, the outer surface of the pressure block has a planar structure, which is tangent to the outer circumferential surface of the tower wheel body.

[0043] Furthermore, in the above technical solution, the tower wheel body is made of metal material.

[0044] Furthermore, in the above technical solution, the pressure block is made of wear-resistant alloy material.

[0045] Furthermore, in the above technical solution, the width of the groove opening of the pressure groove gradually increases outward along the radial direction of the tower wheel body.

[0046] The tower wheel body 1 has a disc-shaped structure with multiple wire pressing grooves 4 evenly distributed along its outer circumference. Each wire pressing groove 4 has a V-shaped or U-shaped groove structure in cross-section. The depth of the wire pressing groove 4 is 8mm~15mm, and the width of the groove bottom is 3mm~8mm. The width of the groove opening gradually increases radially outward from the tower wheel body 1, forming a trumpet-shaped structure that facilitates wire introduction. The width of the outermost part of the groove opening is 2mm~5mm larger than the width of the groove bottom. A protrusion is provided at the center of the bottom surface of the wire pressing groove 4. The protrusion has a continuous ridge structure along the extension direction of the wire pressing groove 4. The height of the protrusion is 1mm~3mm, and its radius of curvature is 5mm~10mm, which is significantly smaller than the radius of curvature of other parts of the bottom surface of the wire pressing groove 4. The pressure block 2 is a crescent-shaped plate structure with a thickness of 4mm to 8mm. The radius of curvature of the inner arc surface of the pressure block 2 is 15mm to 30mm, which is designed to match the diameter of the cascade body 1 to ensure that it is smaller than the radius of curvature of the outer circumference of the cascade body 1. The radial depth of the inner arc surface of the pressure block 2 along the cascade body 1 is 10mm to 18mm, which is greater than the radial depth of the pressure groove 4 along the cascade body 1, allowing the pressure block 2 to form sufficient pressing stroke within the pressure groove 4. The two edges of the pressure block 2 taper from the middle to both ends, with a taper angle of 15 degrees to 30 degrees, forming a progressive guide structure. The outer surface of the pressure block 2 is a planar structure, which is tangent to the outer circumference of the cascade body 1, allowing the pressure block 2 to smoothly transition with the outer circumference of the cascade body 1 when no force is applied. The hinge shaft 3 is a cylindrical rod with a diameter of 3mm to 6mm. It passes through the geometric center of the pressure block 2. A through hole matching the diameter of the hinge shaft 3 is provided on the pressure block 2. Both ends of the hinge shaft 3 are fixed to the side walls of the pressure groove 4 by press-fit or pin locking. A rotating pair is formed between the hinge shaft 3 and the pressure block 2, allowing the pressure block 2 to rotate freely around the axis of the hinge shaft 3, with a rotation angle range of ±15° to ±30°. The tower wheel body 1 is made of 45# steel, which, after quenching and tempering, possesses good strength and toughness, with a surface hardness of HRC35 to HRC45. The pressure block 2 is made of high-chromium alloy steel, which, after quenching and tempering, achieves a surface hardness of HRC55 to HRC65 and exhibits excellent wear resistance. The hinge shaft 3 is made of stainless steel, ensuring that corrosion will not affect its rotational flexibility during long-term use.

[0047] The method of using this utility model is as follows: When the wire drawing machine is running, the wire is drawn out from the wire drawing die and wrapped around the outer circumference of the tower wheel body 1. The wire passes through each pressure groove 4 in sequence. When the wire enters a certain pressure groove 4, it is first guided through the flared opening of the pressure groove 4. During the guidance process, the wire contacts the tapered contraction edges on both sides of the pressure block 2 and is gradually guided to smoothly enter the central area of ​​the pressure groove 4. After the wire continues to descend, it contacts the protrusion on the bottom surface of the pressure groove 4. At the same time, the outer surface of the wire contacts the arc-shaped inner surface of the pressure block 2. As the wire drawing process proceeds, the wire is subjected to the subsequent pulling force, which applies a pulling force to the pressure block 2. This pulling force causes the pressure block 2 to generate a rotational torque around the hinge shaft 3. The pressure block 2 is subjected to this torque. Under the action of the pressure block 2, the wire rotates towards the wire, and the arc-shaped inner side of the pressure block 2 further presses the wire, making the wire fit more tightly against the protrusion on the bottom surface of the pressure groove 4, forming a stable three-point or multi-point contact clamping state. The rotation angle of the pressure block 2 is determined by the tension of the wire. The greater the tension of the wire, the greater the rotation angle of the pressure block 2, and the greater the clamping force on the wire. Conversely, the clamping force decreases. When the tower wheel body 1 rotates and drives the wire to move, the wire will not slip under the clamping action between the pressure block 2 and the bottom surface of the pressure groove 4, ensuring the stability of the wire drawing speed. At the same time, the crescent shape and arc-shaped inner side design of the pressure block 2 allow the wire to maintain contact with the pressure block 2 within a larger circumferential angle range, increasing the friction area and further improving the anti-slip ability.

[0048] Example 1: A wire drawing machine for steel wire drawing is equipped with the tower wheel pressure structure of this utility model. The tower wheel body 1 has a diameter of 400mm, and eight pressure grooves 4 are evenly distributed on its outer circumference. Each pressure groove 4 has a depth of 12mm, a bottom width of 5mm, an outermost width of 9mm, a raised part at the center of the bottom surface of the pressure groove 4 with a height of 2mm, and a radius of curvature of 8mm. The pressure block 2 has a thickness of 6mm, a radius of curvature of 25mm on its arc-shaped inner side, a radial depth of 15mm, and a cone angle of 20 degrees on both sides. The hinge shaft 3 has a diameter of 5mm and is made of 304 stainless steel. The tower wheel body 1 is made of 45# steel, and its surface hardness is HRC40 after quenching and tempering. The pressure block 2 is made of Cr12MoV high-chromium alloy steel, and its surface hardness is HRC60 after quenching and tempering. This wire drawing machine is used to draw steel wire with a diameter of 2.5mm at a drawing speed of 300 meters per minute. During the drawing process, the steel wire passes through various stages of rollers sequentially. When the steel wire passes through a roller equipped with the pressure structure of this invention, it is stably clamped by the pressure block 2. The pressure block 2 automatically adjusts the clamping angle according to the change in drawing tension. Throughout the entire drawing process, the steel wire does not slip, the drawing speed remains stable, and the diameter tolerance of the drawn steel wire is controlled within ±0.02mm, with a smooth surface free of scratches. After 200 hours of continuous operation of the rollers, the wear on the arc-shaped inner surface of the pressure block 2 is less than 0.1mm, and the rotational flexibility of the pressure block 2 remains good, indicating that this invention has excellent durability and reliability.

[0049] Example 2, based on Example 1, improves the structure of the wire clamping block 2. Multiple fine grooves are formed along the circumference on the arc-shaped inner surface of the wire clamping block 2. These grooves have a depth of 0.2mm~0.5mm, a width of 0.3mm~0.8mm, and a spacing of 2mm~4mm between them, extending radially along the wire clamping block 2. This fine groove structure increases the surface roughness of the contact surface when the wire clamping block 2 contacts the wire, improving the coefficient of friction and further enhancing the clamping ability of the wire. Simultaneously, the grooves also serve to store lubricating oil. If lubricating oil is present during wire drawing, the grooves can retain it in the contact area, reducing dry friction and lowering the wear rate. The improved wire clamping block 2 increases the clamping force on the steel wire by 15%~20% under the same working conditions, and extends the service life of the wire clamping block 2 by more than 30%.

[0050] Example 3, based on Example 1, improves the structure of the pressure groove 4 of the tower wheel body 1. Elastic buffer pads are installed on both side walls of the pressure groove 4. These pads are made of rubber or polyurethane material, with a thickness of 1mm to 3mm and a hardness of Shore A60 to Shore A80. The elastic buffer pads are fixed to the side walls of the pressure groove 4 by adhesive bonding or mechanical clamping. The two ends of the hinge shaft 3 are mounted on the elastic buffer pads, rather than directly on the metal side walls of the pressure groove 4. This improvement allows the pressure block 2 to achieve a certain buffering effect during rotation. When the wire tension changes abruptly, the elastic buffer pads can absorb some of the impact energy, reducing the impact load on the hinge shaft 3 and the pressure block 2, protecting the hinge structure from damage. Simultaneously, the elastic buffer pads also play a role in vibration and noise reduction, lowering the vibration and noise levels during the wire drawing machine's operation and improving the working environment.

[0051] Specifically, the principle of this invention is as follows: The fundamental reason for replacing the traditional fixed wire groove with a hinged wire clamping block structure lies in utilizing the principles of torque balance and friction self-locking in mechanics. When the wire passes through the wire groove, the tension exerted by the wire on the wire clamping block generates a torque that causes the wire clamping block to rotate around the hinge axis. The magnitude of this torque is proportional to the wire tension. During the rotation of the wire clamping block, the normal pressure between its arc-shaped inner surface and the wire also increases. According to the relationship that frictional force equals normal pressure multiplied by the coefficient of friction, the increase in normal pressure directly leads to an increase in frictional force, thereby achieving adaptive adjustment of the clamping force according to the change in tension. The feature that the radius of curvature of the arc-shaped inner surface of the wire clamping block is smaller than the radius of curvature of the outer circumference of the pulley body makes the contact area formed by the wire and the wire clamping block in the wire groove present an envelope state, increasing the contact arc length. According to the Armand-Coulomb friction law, under the same normal pressure, the larger the contact area, the greater the total frictional force, thus effectively preventing the wire from slipping. The design of setting the hinge shaft at the geometric center of the pressure block ensures that the pressure block is subjected to symmetrical force, avoiding jamming or abnormal wear of the pressure block due to eccentric force. The design of the protrusion on the bottom surface of the pressure groove provides stronger positioning constraint force at key positions by reducing the contact area and increasing the contact pressure. The synergistic effect of these structural features ensures the rationality and effectiveness of the present invention from the perspective of mechanical principles.

[0052] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the scope of the claims.

Claims

1. A wire drawing machine tower wheel pressing structure, characterized in that, The device has a tower wheel body with multiple wire pressing grooves on its outer circumference. Each wire pressing groove contains a wire pressing block, which is connected to the tower wheel body via a hinge shaft to support the wire pressing block's rotation around the center of the hinge shaft. The inner surface of the wire pressing block has an arc-shaped structure. When the drawn wire passes through the wire pressing groove, the arc-shaped inner surface of the wire pressing block forms a clamping fit with the bottom surface of the wire pressing groove of the tower wheel body. The radius of curvature of the arc-shaped inner surface of the wire pressing block is smaller than the radius of curvature of the outer circumference of the tower wheel body.

2. The wire drawing machine tower wheel pressing structure according to claim 1, characterized in that, The depth of the arc-shaped inner side of the pressure block along the radial direction of the tower wheel body is greater than the depth of the pressure groove along the radial direction of the tower wheel body.

3. The wire drawing machine tower wheel pressing structure according to claim 2, characterized in that, The bottom surface of the pressure groove of the tower wheel body is provided with a protrusion, and the radius of curvature of the protrusion is smaller than the radius of curvature of other parts of the bottom surface of the pressure groove.

4. The wire drawing machine tower wheel pressing structure according to claim 3, characterized in that, The pressure block is crescent-shaped.

5. The wire drawing machine tower wheel pressing structure according to claim 4, characterized in that, The two sides of the pressure block have a tapered, tapered structure.

6. The wire drawing machine tower wheel pressing structure according to claim 5, characterized in that, The hinge shaft passes through the geometric center of the pressure block, and both ends of the hinge shaft are fixed to the two side walls of the pressure groove.

7. The wire drawing machine tower wheel pressing structure according to claim 6, characterized in that, The outer surface of the pressure block has a planar structure, which is tangent to the outer circumferential surface of the tower wheel body.

8. The wire drawing machine tower wheel pressing structure according to claim 7, characterized in that, The tower wheel body is made of metal.

9. The wire drawing machine tower wheel pressing structure according to claim 8, characterized in that, The pressure block is made of wear-resistant alloy material.

10. The wire drawing machine tower wheel pressing structure according to claim 9, characterized in that, The width of the pressure groove gradually increases radially outward from the tower wheel body.

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