High-precision special-shaped wire rod forming rolling mill

Abstract

The invention relates to the technical field of special-shaped wire rod production, in particular to a high-precision special-shaped wire rod forming rolling mill which comprises a clamp used for clamping and fixing rolled wire rods, a side combined die used for being combined into a special-shaped die, an upper combined die and a lower combined die. The side combined die, the upper combined die and the lower combined die are arranged to be combined into the special-shaped die, then a drawing production mode is adopted, a rolled rough wire is changed into the special-shaped wire through the special-shaped die, and it is guaranteed that the edge precision of the produced special-shaped wire is enough. And the upper combined die and the lower combined die are movable pieces, the special-shaped die can be opened, so that the clamp and the connecting part pass through the special-shaped die, the process flow is simplified, and the efficiency is improved. The traction cable and the rolled wire are connected through the clamp and the connecting part, the hydraulic cylinder is arranged in the clamp to drive the clamping plate to clamp the rolled wire, and firm connection is guaranteed.

Description

Technical Field

[0001] The invention relates to the technical field of special-shaped wire production, and in particular to a high-precision special-shaped wire forming rolling mill. Background Art

[0002] Metal wire, also known as wire rod, is the smallest cross-sectional size among hot-rolled steel sections, with a diameter of 5-9 mm. Wire rods are generally produced through hot rolling or cold rolling. After heating, metal ingots or metal rods are sent to the rolling mill and are formed after rough rolling, medium rolling and fine rolling. Fine rolling is the last rolling process, which is the process that finally determines the shape, width, thickness and other dimensions of the metal wire.

[0003] Generally, wires have circular cross-sections, but there are also other shapes, such as rectangles, trapezoids, etc. Wires with other cross-sections are collectively referred to as special-shaped wires. Currently, special-shaped metal wires are mainly produced in two ways: one is to draw through special-shaped dies after fine rolling, and the other is to use passive special-shaped rollers in the fine rolling process.

[0004] Among them, the edge accuracy of the special-shaped wire rolled by the passive special-shaped roller is difficult to control. Generally, poor accuracy will make the edge easily become curved. Therefore, it may be necessary to perform drawing and over-molding in the end, which will greatly reduce production efficiency and increase production costs.

[0005] The production method of drawing with special-shaped molds requires a high-power traction machine to provide power, and the traction rope of the traction machine needs to be connected to the special-shaped wire and ensure it is secure. This results in the connection head of the traction rope and the special-shaped wire being generally large in size and unable to pass through the special-shaped mold of the special-shaped wire. Therefore, the end of the special-shaped wire needs to be processed and passed through the special-shaped mold first, and then connected to the connection head of the traction machine, and then pulled and drawn. Not only does it increase the construction process, making the process cumbersome and troublesome to operate, but it also reduces production efficiency. Summary of the invention

[0006] In view of this, the purpose of the present invention is to propose a high-precision special-shaped wire forming rolling mill to solve the problem in the prior art that the connecting head of the traction rope and the special-shaped wire cannot pass through the special-shaped die of the special-shaped wire when using special-shaped die drawing production.

[0007] Based on the above purpose, the present invention provides a high-precision special-shaped wire forming rolling mill, including a traction rope for traction rolling wire and a mold arch for loading special-shaped molds, and the special-shaped wire forming rolling mill also includes:

[0008] A clamp for clamping and fixing the rolled wire and a connecting portion provided between the traction rope and the clamp, wherein the clamp and the traction rope are fixedly connected to the front and rear ends of the connecting portion respectively;

[0009] The side combined mold, the upper combined mold and the lower combined mold are used to be combined into a special-shaped mold. The side combined mold is provided with a pair of and symmetrically connected to the two inner side walls of the mold arch frame. The upper combined mold and the lower combined mold are respectively movably connected above and below the side combined mold.

[0010] Furthermore, the clamp includes a main board, a clamp and a hydraulic cylinder. The main board is provided with a movable groove, the clamp is slidably connected in the movable groove, the hydraulic cylinder is fixedly connected to the rear side of the main board, and the clamp is connected to the output shaft of the hydraulic cylinder through a connecting rod.

[0011] Furthermore, the clamping plates are symmetrically arranged in two groups and are respectively connected to the upper and lower sides of the main board, and a plurality of fixing nails are fixedly connected to the opposite end surfaces of the two groups of clamping plates located on the front side of the main board.

[0012] Furthermore, the clamping plate is also fixedly connected to a limiting ear, and the limiting ear is located at the rear side of the main board and is slidably connected thereto.

[0013] Furthermore, the connecting portion is composed of two parallel straight plates, the front ends of the two straight plates are fixedly connected to the rear side of the main board, and the hydraulic cylinder is located between the two straight plates.

[0014] Furthermore, the upper combined mold is located below the upper hydraulic platform and is fixedly connected to the output shaft of the upper hydraulic platform, and the upper hydraulic platform is fixedly connected to the top of the mold arch.

[0015] Furthermore, the lower combined mold is located above the lower hydraulic platform and is fixedly connected to the output shaft of the lower hydraulic platform, and the lower hydraulic platform is fixedly connected to the bottom of the mold arch.

[0016] Furthermore, the inner edges of the side combined mold, the upper combined mold and the lower combined mold are provided with inwardly inclined shrinkage slopes.

[0017] Furthermore, a bracket is provided in the mold arch frame for supporting the connection part, the bracket is movably connected in the mold arch frame, and a plurality of rollers are also rollingly connected to the inner wall of the bracket.

[0018] Furthermore, a telescopic motor is also provided in the mold arch, and the bracket is fixedly connected to the output shaft of the telescopic motor through a support.

[0019] The beneficial effects of the present invention are as follows: 1. A side combined die, an upper combined die and a lower combined die are arranged to form a special-shaped die, and then a drawing production method is adopted to convert the rolled rough wire into a special-shaped wire through the special-shaped die, thereby ensuring that the edge accuracy of the produced special-shaped wire is sufficient.

[0020] 2. Use a clamp and a connection part to connect the traction rope and the rolled wire rod, and set a hydraulic cylinder in the clamp to drive the clamp to clamp the rolled wire rod to ensure a secure connection. The connection part and the matching bracket are set, and the bracket can be moved up and down by the telescopic motor. Therefore, before the traction rope is connected and tightened with the rolled wire rod, the clamp and the connection part can be fixed at the specified position (height), so that the rolled wire rod can automatically and accurately reach between the upper and lower clamps of the clamp after coming out of the rolling mill.

[0021] 3. The side combined mold among the side combined mold, upper combined mold and lower combined mold is a fixed part, while the upper combined mold and the lower combined mold are movable parts. The upper combined mold and the lower combined mold can open the special-shaped mold by driving the upper hydraulic table and the lower hydraulic table, so that the clamp and the connecting part can pass through the special-shaped mold. Therefore, there is no need to process the end of the special-shaped wire and pass it through the special-shaped mold first, and then connect it with the connecting head of the traction rope, which simplifies the process flow and improves efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings in the following description are only for the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0023] Figure 1 It is a schematic diagram of the overall structural principle of the device of the present invention.

[0024] Figure 2 It is a schematic structural diagram of the device of the present invention from the front side perspective.

[0025] Figure 3 It is a schematic diagram of the structure of the clamp and the mold arch part in the device of the present invention.

[0026] Figure 4 It is a cross-sectional view of the main body of the device of the present invention.

[0027] Figure 5 It is a schematic diagram of the internal structure of the mold arch in the device of the present invention.

[0028] Figure 6 It is a schematic structural diagram of the clamp part in the device of the present invention.

[0029] The markings in the figure are:

[0030] 01. rolled wire, 101. traction rope, 102. connecting part, 103. clamp, 104. mold arch, 105. side combination mold, 106. upper combination mold, 107. lower combination mold, 108. upper hydraulic table, 109. lower hydraulic table, 110. bracket, 111. telescopic motor, 112. pillar, 113. main board, 114. splint, 115. movable groove, 116. hydraulic cylinder, 117. connecting rod, 118. limit ear, 119. fixing nail, 120. roller, 121. shrinkage slope. DETAILED DESCRIPTION

[0031] In order to make the objectives, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with specific embodiments.

[0032] It should be noted that, unless otherwise defined, the technical terms or scientific terms used in the present invention should be understood by people with ordinary skills in the field to which the present invention belongs. The "first", "second" and similar words used in the present invention do not indicate any order, quantity or importance, but are only used to distinguish different components. "Include" or "comprise" and similar words mean that the elements or objects appearing before the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects. "Connect" or "connected" and similar words are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0033] A first aspect of the present invention, as Figure 1 , Figure 2 and Figure 4 As shown, since the edge precision of the special-shaped wire rolled by the passive special-shaped roller is difficult to control, generally the poor precision will make the edge easily become arc-shaped. Therefore, the present invention adopts the special-shaped die drawing production method, and sets a side combination die 105, an upper combination die 106 and a lower combination die 107 for combining into a special-shaped die, wherein the side combination die 105 is provided with a pair and symmetrically connected to the two inner side walls of the die arch 104, and the upper combination die 106 and the lower combination die 107 are respectively movably connected to the upper and lower parts of the side combination die 105.

[0034] Preferably, the upper combined mold 106 and the lower combined mold 107 can be slidably connected to the inner wall of the mold arch 104.

[0035] The side assembly mold 105, the upper assembly mold 106 and the lower assembly mold 107 together form a rectangular special-shaped mold. Similarly, by setting the shape and size of the side assembly mold 105, the upper assembly mold 106 and the lower assembly mold 107, the special-shaped mold formed together can also be designed into a trapezoid or even a triangle.

[0036] Preferably, an inwardly inclined shrinking slope 121 is provided at the inner edges of the side combined mold 105, the upper combined mold 106 and the lower combined mold 107, so that the rough wire 01 can enter the special-shaped mold composed of the side combined mold 105, the upper combined mold 106 and the lower combined mold 107 more smoothly.

[0037] The side combined die 105, the upper combined die 106 and the lower combined die 107 are combined into a special-shaped die, and then the rolled rough wire 01 is transformed into a special-shaped wire through the special-shaped die by a drawing production method, ensuring that the edge accuracy of the produced special-shaped wire is sufficient.

[0038] A second aspect of the present invention, as Figure 3 , Figure 5 and Figure 6 As shown, due to the use of the special-shaped mold drawing production method, not only a high-power traction machine is required to provide power, but the traction rope of the traction machine needs to be connected to the special-shaped wire and ensure that it is secure. This results in the connection head of the traction rope and the special-shaped wire being generally large in size and unable to pass through the special-shaped mold of the special-shaped wire. Therefore, it is necessary to process the end of the special-shaped wire and first pass through the special-shaped mold, then connect it to the connection head of the traction machine, and then pull and draw. This not only increases the construction process, resulting in a cumbersome process and troublesome operation, but also reduces production efficiency. Therefore, the present invention has made improvements on this. Specifically, the movement of the upper combined mold 106 and the lower combined mold 107 is driven by the upper hydraulic platform 108 and the lower hydraulic platform 109, wherein the upper combined mold 106 is located below the upper hydraulic platform 108 and is fixedly connected to the output shaft of the upper hydraulic platform 108, and the upper hydraulic platform 108 is fixedly connected to the top of the mold arch 104. The lower combined mold 107 is located above the lower hydraulic platform 109 and is fixedly connected to the output shaft of the lower hydraulic platform 109 . The lower hydraulic platform 109 is fixedly connected to the bottom of the mold arch 104 .

[0039] In addition, a clamp 103 for clamping and fixing the rough wire 01 and a connecting portion 102 provided between the traction rope 101 and the clamp 103 are provided, and the clamp 103 and the traction rope 101 are fixedly connected to the front and rear ends of the connecting portion 102 respectively;

[0040] The clamp 103 includes a main board 113, a clamping plate 114 and a hydraulic cylinder 116. The main board 113 is provided with a movable groove 115, and the clamping plate 114 is slidably connected in the movable groove 115. The hydraulic cylinder 116 is fixedly connected to the rear side of the main board 113, and the clamping plate 114 is connected to the output shaft of the hydraulic cylinder 116 through a connecting rod 117. The clamping plates 114 are symmetrically provided with two groups, and are respectively connected to the upper and lower sides of the main board 113, and a plurality of fixing nails 119 are fixedly connected to the opposite end surfaces of the two groups of clamping plates 114 located on the front side of the main board 113. In addition, the clamping plates 114 are fixedly connected with a limiting ear 118, and the limiting ear 118 is located at the rear side of the main board 113 and is slidably connected thereto.

[0041] Preferably, the connecting portion 102 is composed of two parallel straight plates, the front ends of the two straight plates are fixedly connected to the rear side of the main plate 113, and the hydraulic cylinder 116 is located between the two straight plates.

[0042] Among the side combined mold 105, the upper combined mold 106 and the lower combined mold 107, the side combined mold 105 is a fixed part, while the upper combined mold 106 and the lower combined mold 107 are movable parts. The upper combined mold 106 and the lower combined mold 107 can open the special-shaped mold by driving the upper hydraulic platform 108 and the lower hydraulic platform 109, so that the clamp 103 and the connecting part 102 pass through the special-shaped mold. Therefore, there is no need to process the end of the special-shaped wire and then pass it through the special-shaped mold before connecting it to the connecting head of the traction rope 101, which simplifies the process flow and improves efficiency.

[0043] Furthermore, the traction rope 101 is connected to the crude wire 01 by using a clamp 103 and a connecting portion 102, and a hydraulic cylinder 116 is provided in the clamp 103 to drive a clamping plate 114 to clamp the crude wire 01, thereby ensuring a secure connection.

[0044] A third aspect of the present invention is as follows Figure 4 and Figure 5 As shown, an automatically connected traction rope 101 and a rough wire 01 are provided. Specifically, a connecting portion 102 is provided between a clamp 103 for clamping and fixing the rough wire 01 and the traction rope 101 and the clamp 103, and a bracket 110 cooperating with the connecting portion 102 is also provided in a mold arch 104 for supporting the connecting portion 102, the bracket 110 is movably connected in the mold arch 104, and a plurality of rollers 120 are also rollingly connected to the inner wall of the bracket 110.

[0045] In addition, a telescopic motor 111 is also provided in the mold arch 104 , and the bracket 110 is fixedly connected to the output shaft of the telescopic motor 111 through a support 112 .

[0046] The bracket 110 can be moved up and down by the telescopic motor 111. Therefore, before the traction rope 101 is connected to the crude wire 01 and tightened, it can ensure that the clamp 103 and the connecting part 102 are fixed at a specified position (height), so that the crude wire 01 can automatically and accurately rest between the upper and lower sets of clamps 114 of the clamp 103 after coming out of the rolling mill.

[0047] After the rough wire 01 accurately reaches between the upper and lower clamping plates 114 of the clamp 103, the hydraulic cylinder 116 is started to drive the upper and lower clamping plates 114 to clamp the rough wire 01. Then the external traction machine drives the traction rope 101 to pull the rough wire 01. After the traction machine applies power to tighten the traction rope 101, the connecting part 102, the clamp 103 and the rough wire 01, the telescopic motor 111 is controlled to drive the bracket 110 to descend (since it can be suspended in the air after tightening, the bracket 110 is no longer needed) to ensure that the special-shaped wire can be pulled out smoothly.

[0048] In summary, the present invention combines a side combined die 105, an upper combined die 106 and a lower combined die 107 to form a special-shaped die, and then adopts a drawing production method to turn the rolled rough wire 01 into a special-shaped wire through the special-shaped die, ensuring that the edge accuracy of the produced special-shaped wire is sufficient. Among the side combined die 105, the upper combined die 106 and the lower combined die 107, the side combined die 105 is a fixed part, and the upper combined die 106 and the lower combined die 107 are movable parts. The upper combined die 106 and the lower combined die 107 can open the special-shaped die by driving the upper hydraulic platform 108 and the lower hydraulic platform 109, so that the clamp 103 and the connecting part 102 pass through the special-shaped die. Therefore, it is not necessary to pass the end of the special-shaped wire through the special-shaped die after processing, and then connect it with the connecting head of the traction rope 101, simplifying the process flow and improving efficiency. The traction rope 101 and the crude wire 01 are connected by the clamp 103 and the connecting part 102, and the hydraulic cylinder 116 is provided in the clamp 103 to drive the clamp plate 114 to clamp the crude wire 01 to ensure a secure connection. The connecting part 102 and the matching bracket 110 are provided, and the bracket 110 can be moved up and down by the telescopic motor 111. Therefore, before the traction rope 101 is connected and tightened with the crude wire 01, the clamp 103 and the connecting part 102 can be fixed at a specified position (height), so that the crude wire 01 can automatically and accurately reach between the upper and lower clamp plates 114 of the clamp 103 after coming out of the rolling mill.

[0049] It should be understood by those skilled in the art that the discussion of any of the above embodiments is merely illustrative and is not intended to imply that the scope of the present invention, including the claims, is limited to these examples; within the context of the present invention, the technical features in the above embodiments or in different embodiments may be combined, the steps may be implemented in any order, and there are many other variations of the different aspects of the present invention as described above, which are not provided in detail for the sake of simplicity.

[0050] The present invention is intended to cover all such substitutions, modifications and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A high-precision special-shaped wire forming mill, comprising a traction rope (101) for traction of a rough wire (01) and a die arch (104) for loading a special-shaped die, characterized in that: The profiled wire forming mill also includes: A clamp (103) for clamping and fixing the rough wire (01) and a connecting portion (102) provided between the traction rope (101) and the clamp (103), wherein the clamp (103) and the traction rope (101) are respectively fixedly connected to the front and rear ends of the connecting portion (102); A side assembly mold (105), an upper assembly mold (106) and a lower assembly mold (107) are used to assemble into a special-shaped mold. The side assembly mold (105) is provided with a pair of symmetrically connected to the two inner side walls of the mold arch (104), and the upper assembly mold (106) and the lower assembly mold (107) are respectively movably connected to the upper and lower parts of the side assembly mold (105).

2. A high-precision special-shaped wire forming mill according to claim 1, characterized in that: The clamp (103) comprises a main board (113), a clamping plate (114) and a hydraulic cylinder (116); a movable groove (115) is provided on the main board (113); the clamping plate (114) is slidably connected in the movable groove (115); the hydraulic cylinder (116) is fixedly connected to the rear side of the main board (113); and the clamping plate (114) is connected to the output shaft of the hydraulic cylinder (116) via a connecting rod (117).

3. A high-precision special-shaped wire forming mill according to claim 2, characterized in that: The clamping plates (114) are symmetrically provided in two groups and are respectively connected to the upper and lower sides of the main board (113), and a plurality of fixing nails (119) are fixedly connected to the opposite end surfaces of the two groups of clamping plates (114) located on the front side of the main board (113).

4. A high-precision special-shaped wire forming mill according to claim 2, characterized in that: The clamping plate (114) is also fixedly connected to a limiting ear (118), and the limiting ear (118) is located at the rear side of the main plate (113) and is slidably connected thereto.

5. A high-precision special-shaped wire forming mill according to claim 2, characterized in that: The connecting portion (102) is composed of two parallel straight plates, the front ends of the two straight plates are fixedly connected to the rear side of the main plate (113), and the hydraulic cylinder (116) is located between the two straight plates.

6. A high-precision special-shaped wire forming mill according to claim 1, characterized in that: The upper combined mold (106) is located below the upper hydraulic platform (108) and is fixedly connected to the output shaft of the upper hydraulic platform (108); the upper hydraulic platform (108) is fixedly connected to the top of the mold arch (104).

7. A high-precision special-shaped wire forming mill according to claim 1, characterized in that: The lower combined mold (107) is located above the lower hydraulic platform (109) and is fixedly connected to the output shaft of the lower hydraulic platform (109). The lower hydraulic platform (109) is fixedly connected to the bottom of the mold arch (104).

8. A high-precision special-shaped wire forming rolling mill according to claim 1, 6 or 7, characterized in that: The inner edges of the side combined mold (105), the upper combined mold (106) and the lower combined mold (107) are provided with inwardly inclined shrinking inclined surfaces (121).

9. A high-precision special-shaped wire forming rolling mill according to claim 1, characterized in that: The mold arch (104) is provided with a bracket (110) for supporting the connecting portion (102); the bracket (110) is movably connected in the mold arch (104), and a plurality of rollers (120) are rollingly connected to the inner wall of the bracket (110).

10. A high-precision special-shaped wire forming rolling mill according to claim 9, characterized in that: A telescopic motor (111) is also provided in the mold arch (104), and the bracket (110) is fixedly connected to the output shaft of the telescopic motor (111) via a support (112).

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