High-speed straightening machine

Abstract

The utility model discloses a high speed straightener, including first wire feeding mechanism, rotary straightening mechanism and second wire feeding mechanism, rotary straightening mechanism is equipped with the rotating shaft, the rotating shaft is arranged between first wire feeding mechanism and second wire feeding mechanism, the rotating shaft forms the wire channel, the wire channel passes through the rotating shaft in the axial direction, the rotating shaft is equipped with the slot, and the slot passes through the wire channel. The through insertion grooves are perpendicular to the rotating axis of the rotating shaft and distributed at intervals in the axial direction, straightening blocks are installed in the through insertion grooves in a matched mode, wire passing holes are formed in the straightening blocks, inner bushings are arranged in the wire passing holes in a matched mode, straightening cylindrical hole parts used for making contact with steel wires are formed in the inner bushings, an input end horn mouth is formed in one end of each wire passing hole, and an output end horn mouth is formed in the other end of each wire passing hole. An output end horn mouth is formed in the other end corresponding to the wire passing hole, and the inner bushing is arranged between the input end horn mouth and the output end horn mouth. According to the high-speed straightening machine, the scratching degree of the steel wire can be reduced, and the use cost of the high-speed straightening machine can be reduced.

Description

Technical Field

[0001] The utility model relates to the field of steel wire straightening equipment, in particular to a high-speed straightening machine. Background Art

[0002] Currently, steel wire is supplied in a coiled state. When in use, the steel wire needs to be cut into the required length and then the cut steel wire is straightened. However, this operation results in very low work efficiency. Therefore, a high-speed straightening machine has recently appeared. For example, the "high-speed straightening machine" with the Chinese invention patent publication number CN109822010B can be referred to. The high-speed straightening machine is provided with a rotating shaft, and a plurality of straightening blocks (or "straightening blocks") are provided on the rotating shaft. The straightening blocks are formed with through holes for the steel wire to pass through. The inner diameter of the through holes is slightly larger than the diameter of the steel wire. The through hole and the rotating shaft are eccentrically arranged. Therefore, when the rotating shaft rotates at high speed and the steel wire passes through the through hole, the inner wall of the through hole will be close to the steel wire and make relative spiral motion. The inner wall of the through hole can straighten the bent part of the steel wire. In other words, the steel wire will have more intense friction with the inner wall and the opening of the through hole, especially when the steel wire has a more obvious wavy bend, which will cause the through hole to wear quickly, which will increase the use cost of the high-speed straightening machine, and the steel wire will also be obviously scratched, so it is necessary to make improvements. Summary of the Invention

[0003] The purpose of the utility model is to overcome the deficiencies of the prior art and provide a high-speed straightening machine, which can reduce the degree of scratching of steel wires and is conducive to reducing the use cost of the high-speed straightening machine.

[0004] The purpose of this utility model is achieved through the following technical solutions.

[0005] The high-speed straightening machine disclosed in the utility model includes a first wire feeding mechanism, a rotary straightening mechanism and a second wire feeding mechanism, the rotary straightening mechanism is provided with a rotating shaft, the rotating shaft is arranged between the first wire feeding mechanism and the second wire feeding mechanism, wherein the rotating shaft is formed with a wire passing channel, the wire passing channel axially passes through the rotating shaft, a through slot is formed on the rotating shaft, the through slot is perpendicular to the rotation axis of the rotating shaft, the through slots are distributed at intervals along the axial direction, a straightening block is adapted to be installed in the through slot, a wire passing hole is formed in the straightening block, an inner sleeve is adapted to be provided in the wire passing hole, a straightening cylindrical hole portion for contacting the steel wire is formed in the inner sleeve, an input end bell mouth is formed at one end of the wire passing hole, an output end bell mouth is formed at the other end corresponding to the wire passing hole, and the inner sleeve is arranged between the input end bell mouth and the output end bell mouth.

[0006] Preferably, a positioning step is formed at one end of the wire hole, and an end of the inner sleeve relatively close to the output end bell mouth is in contact with the positioning step.

[0007] Preferably, an input end conical hole portion is formed at one end of the inner sleeve, and an output end conical hole portion is formed at the other corresponding end of the inner sleeve, and the straightening cylindrical hole portion is arranged between the input end conical hole portion and the output end conical hole portion, and the input end conical hole portion and the output end conical hole portion are arranged back to back.

[0008] Preferably, an observation port is formed on the rotating shaft, the observation port radially passes through the rotating shaft, and the observation port is arranged between adjacent through-slots.

[0009] Preferably, both ends of the through slot are provided with adjusting screws respectively, the straightening block is clamped between the two corresponding adjusting screws, and the straightening block can slide and adjust in the through slot.

[0010] Preferably, a mounting hole is formed on the rotating shaft, the mounting hole is perpendicular to the rotation axis of the rotating shaft, the through slot is arranged to pass through the corresponding mounting hole, and the adjusting screw is screwed into the corresponding mounting hole.

[0011] Compared with the prior art, the utility model has the following beneficial effects: a through slot is formed on the rotating shaft, the through slot is perpendicular to the rotating axis of the rotating shaft, the through slots are spaced apart along the axial direction, a straightening block is adapted to be installed in the through slot, a wire passing hole is formed in the straightening block, an inner sleeve is adapted to be provided in the wire passing hole, a straightening cylindrical hole portion for contacting the steel wire is formed in the inner sleeve, which is beneficial to reducing the use cost of the high-speed straightening machine; an input end bell mouth is formed at one end of the wire passing hole, an output end bell mouth is formed at the other end corresponding to the wire passing hole, and the inner sleeve is provided between the input end bell mouth and the output end bell mouth, which can reduce the degree of scratching of the steel wire. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the three-dimensional structure of the high-speed straightening machine of the present utility model.

[0013] Figure 2 It is a schematic cross-sectional view of the rotary straightening mechanism of the present invention.

[0014] Figure 3 It is a schematic diagram of the three-dimensional structure of the rotating shaft of the present utility model.

[0015] Figure 4 It is a schematic diagram of the three-dimensional structure of the assembly of the straightening block and the inner sleeve of the utility model.

[0016] Figure 5 The utility model is a schematic cross-sectional structural diagram of the assembly of the straightening block and the inner sleeve.

[0017] Figure 6 It is a schematic cross-sectional structural diagram of the straightening block of the present invention.

[0018] Figure 7 It is a schematic cross-sectional structural diagram of the inner sleeve of the present invention.

[0019] Explanation of reference numerals: frame 1; first wire feeding mechanism 2; rotational straightening mechanism 3; rotating shaft 31; wire passing channel 3101; through slot 311; mounting hole 312; observation port 313; straightening block 32; wire passing hole 320; input end bell mouth 3201; output end bell mouth 3202; positioning step 3203; inner sleeve 321; straightening cylindrical hole portion 3211; input end conical hole portion 3212; output end conical hole portion 3213; adjusting screw 33; second wire feeding mechanism 4; cutting mechanism 5; steel wire 99. DETAILED DESCRIPTION

[0020] The present invention will be further described below in conjunction with the accompanying drawings.

[0021] The high-speed straightening machine of the utility model is as follows: Figure 1 As shown, it includes a first wire feeding mechanism 2, a rotation straightening mechanism 3 and a second wire feeding mechanism 4. The first wire feeding mechanism 2 includes an upper pressure wheel and a lower support wheel. The upper pressure wheel clamps the steel wire 99 on the lower support wheel through the elastic restoring force of the spring. The driving motor of the first wire feeding mechanism 2 drives the upper pressure wheel and the lower support wheel to rotate synchronously (wherein the upper pressure wheel and the lower support wheel rotate in opposite directions). For example, it can drive the steel wire 99 to move from left to right. The working principle of the second wire feeding mechanism 4 is the same as that of the first wire feeding mechanism 2, and both belong to the prior art. Figure 1 and Figure 2 As shown, the rotary straightening mechanism 3 is provided with a rotating shaft 31, which is arranged between the first wire feeding mechanism 2 and the second wire feeding mechanism 4. The rotary straightening mechanism 3 is also provided with a rotating shaft motor. A pulley is installed at the left end of the rotating shaft 31. The rotating shaft motor is connected to the above-mentioned pulley through a transmission belt, so that the rotating shaft 31 can rotate quickly. The basic working principle of the rotary straightening mechanism 3 for straightening the steel wire 99 belongs to the existing technology; Figure 1 As shown, the high-speed straightening machine includes a frame 1, a first wire feeding mechanism 2, a rotary straightening mechanism 3 and a second wire feeding mechanism 4 are arranged on the frame 1, and a cutting mechanism 5 is provided on the frame 1. The cutting mechanism 5 can cut the straightened steel wire 99, and the working principle of the cutting mechanism 5 is the existing technology.

[0022] like Figure 3 As shown, the shaft 31 is formed with a wire passage 3101, which is axially passed through the shaft 31 so that the steel wire 99 can pass through the shaft 31 along the rotation axis of the shaft 31. The shaft 31 is formed with a through slot 311, and the cross-sectional shape of the through slot 311 is rectangular. The through slot 311 is perpendicular to the rotation axis of the shaft 31, and the through slots 311 are spaced apart along the axial direction (that is, along the rotation axis of the shaft 31). Figure 2In the embodiment shown, the number of the through slots 311 is set to seven. Figure 2 As shown, the straightening block 32 is adapted to be installed in the through slot 311, that is, the straightening block 32 is inserted and installed in the corresponding through slot 311 along a direction perpendicular to the rotation axis of the shaft 31. Figure 3 As shown, the straightening block 32 is roughly in the shape of a rectangular parallelepiped, and a wire hole 320 is formed in the straightening block 32; Figure 4 In the embodiment shown, the straightening block 32 is first processed by lathe to form a cylindrical workpiece to form a wire hole 320, and then processed into a flat block by milling or wire cutting. Figure 4 In the embodiment, the upper and lower ends of the straightening block 32 retain partial cylindrical surfaces. Figure 4 and Figure 5As shown, an inner sleeve 321 is adapted to be provided in the wire-passing hole 320, and a straightening cylindrical hole portion 3211 for contacting the steel wire 99 is formed in the inner sleeve 321, and an input end bell mouth 3201 is formed at one end of the wire-passing hole 320, and the input end bell mouth 3201 can be an inner conical surface, and the end with a smaller outer diameter of the inner conical surface is coaxially connected to the wire-passing hole 320, that is, the input end bell mouth 3201 is gradually expanded from the inside to the outside, and an output end bell mouth 3202 is formed at the other end corresponding to the wire-passing hole 320, and the output end bell mouth 3202 is also gradually expanded from the inside to the outside, so that the output end bell mouth 3202 and the input end bell mouth 3201 are arranged in back to back, and the inner sleeve 321 is arranged between the input end bell mouth 3201 and the output end bell mouth 3202. In other words, the inner sleeve 321 is hidden in the straightening block 32, which is actually a straightening The cylindrical hole portion 3211 has a straightening effect on the steel wire 99, so the volume of the inner sleeve 321 can be set to be smaller (on the premise that it is sufficient to form the straightening cylindrical hole portion 3211), and the inner sleeve 321 can be made of a material with higher hardness and better wear resistance. For example, the inner sleeve 321 can be made of high-speed steel, and the straightening block 32 generally does not contact the steel wire 99, so the straightening block 32 can be made of ordinary carbon structural steel. Therefore, although the volume of the straightening block 32 is relatively large, it is relatively easy to cut and process, so the production cost is low. Although the heat treatment process of the inner sleeve 321 is relatively complicated, the inner sleeve 321 is a simple sleeve structure and is relatively easy to process, so the production cost is not high. The inner sleeve 321 can be an interference fit with the wire hole 320 to prevent the inner sleeve 321 and the wire hole 320 from rotating relative to each other. When the inner sleeve 321 is worn, the straightening block 32 is disassembled, and the straightening block 32 can be heated to slightly expand the wire hole 320. The worn inner sleeve 321 can then be pushed out of the wire hole 320 to avoid the need to scrap the straightening block 32. Of course, the cost of replacing the straightening block 32 and the inner sleeve 321 as a whole will not be too high. As can be seen from the above, by providing a combined structure of the inner sleeve 321 and the straightening block 32, the number of shutdowns for maintenance of the high-speed straightening machine can be reduced, and the maintenance cost is low, which is conducive to reducing the cost of using the high-speed straightening machine. Figure 5 As shown, since the input end bell mouth 3201 and the output end bell mouth 3202 are formed, if the steel wire 99 occasionally has obvious wave bends, the input end bell mouth 3201 and the output end bell mouth 3202 can avoid the steel wire 99, preventing the straightening block 32 from scraping the surface of the steel wire 99 relative to the spiral, and reducing the degree of scratching of the steel wire 99.

[0023] like Figure 5 As shown, the cone angle of the output end bell mouth 3202 can be smaller than the cone angle of the input end bell mouth 3201, because after the straightening effect of the inner sleeve 321, the bending degree of the steel wire 99 will be relatively reduced.

[0024] Furthermore, if Figure 6 As shown, a positioning step 3203 is formed at one end of the wire hole 320. Figure 5 As shown, one end of the inner sleeve 321 that is relatively close to the output bell mouth 3202 is connected to the positioning step 3203, so that the positioning step 3203 can prevent the inner sleeve 321 from shifting along the conveying direction of the steel wire 99, thereby preventing the steel wire 99 from pulling the inner sleeve 321 out of the straightening block 32 through friction.

[0025] Furthermore, if Figure 7 As shown, an input end conical hole portion 3212 is formed at one end of the inner sleeve 321, and an output end conical hole portion 3213 is formed at the other end corresponding to the inner sleeve 321. The straightening cylindrical hole portion 3211 is arranged between the input end conical hole portion 3212 and the output end conical hole portion 3213, and the input end conical hole portion 3212 and the output end conical hole portion 3213 are arranged back to back. That is to say, the input end conical hole portion 3212 is gradually expanded from the inside to the outside, and the output end conical hole portion 3213 is also gradually expanded from the inside to the outside. Therefore, while ensuring that the inner sleeve 321 has sufficient axial length to contact the inner wall of the wire hole 320 so that the inner sleeve 321 can be firmly embedded, it avoids significantly increasing the contact length between the inner sleeve 321 and the steel wire 99, thereby avoiding increasing the mutual scraping strength between the inner sleeve 321 and the steel wire 99. A transition fillet is formed between the input-end conical hole portion 3212 and the straightening cylindrical hole portion 3211 , and a transition fillet is also formed between the output-end conical hole portion 3213 and the straightening cylindrical hole portion 3211 .

[0026] Furthermore, if Figure 2 and Figure 3 As shown, an observation port 313 is formed on the rotating shaft 31. The observation port 313 radially penetrates the rotating shaft 31 (the "radial" here refers to the rotation axis of the rotating shaft 31). Thus, the observation port 313 is connected to the wire channel 3101. The observation port 313 is set between adjacent through-slots 311. Therefore, the situation of the steel wire 99 passing through the rotating shaft 31 can be observed through the observation port 313. In addition, since the friction between the inner sleeve 321 and the steel wire 99 generates a lot of heat, the observation port 313 can also play a role in heat dissipation. Figure 2 As shown, the left side of the observation port 313 is connected to the corresponding output end bell mouth 3202 , and the right side of the observation port 313 is connected to the corresponding input end bell mouth 3201 .

[0027] Furthermore, if Figure 2As shown, adjusting screws 33 are provided at both ends of the through slot 311, and the straightening block 32 is sandwiched between the two corresponding adjusting screws 33. The straightening block 32 can slide and adjust its position in the through slot 311. Therefore, when the eccentricity between the inner sleeve 321 and the rotation axis of the rotating shaft 31 needs to be adjusted accordingly due to the change in the diameter of the steel wire 99 (the axis of the straightening cylindrical hole 3211 is always parallel to the rotation axis of the rotating shaft 31), first loosen the adjusting screw 33 on one side of the straightening block 32 (so that the adjusting screw 33 is away from the straightening block 32). By tightening the adjusting screw 33 on the other side of the straightening block 32 (so that the adjusting screw 33 pushes the straightening block 32), the straightening block 32 can be adjusted in a direction perpendicular to the rotation axis of the rotating shaft 31 so that the inner wall of the straightening cylindrical hole 3211 does not intrude into the range of the steel wire 99 in an ideal straight state. For example, when the diameter of the steel wire 99 increases, the above-mentioned eccentricity should be reduced accordingly, otherwise the inner wall of the straightening cylindrical hole 3211 will over-adjust the steel wire 99. When the adjusting screws 33 on both sides of the straightening block 32 are tightened, the straightening block 32 and the rotating shaft 31 are restored to be relatively fixed.

[0028] Furthermore, if Figure 3 As shown, a mounting hole 312 is formed on the rotating shaft 31, and the mounting hole 312 is perpendicular to the rotation axis of the rotating shaft 31, and the through slot 311 is set to pass through the corresponding mounting hole 312, and the adjusting screw 33 is screwed into the corresponding mounting hole 312. In other words, the center line of the mounting hole 312 can be set to coincide with the center line of the through slot 311. The outer diameter of the mounting hole 312 is larger than the short side of the through slot 311, which is equivalent to the through slot 311 cutting through the corresponding mounting hole 312. The adjusting screw 33 can be a hexagonal flat-end set screw. The above structure is simple to set and easy to manufacture, and avoids the need to set a mounting plate covering the end of the through slot 311 for screwing the adjusting screw 33.

Claims

1. A high-speed straightening machine, comprising a first wire feeding mechanism (2), a rotary straightening mechanism (3) and a second wire feeding mechanism (4), wherein the rotary straightening mechanism (3) is provided with a rotating shaft (31), and the rotating shaft (31) is arranged between the first wire feeding mechanism (2) and the second wire feeding mechanism (4), characterized in that: The rotating shaft (31) is formed with a wire-passing channel (3101), the wire-passing channel (3101) is axially passed through the rotating shaft (31), a through slot (311) is formed on the rotating shaft (31), the through slot (311) is perpendicular to the rotation axis of the rotating shaft (31), the through slots (311) are spaced apart along the axial direction, a straightening block (32) is adapted to be installed in the through slot (311), a wire-passing hole (320) is formed in the straightening block (32), the through slot (311) is provided with a wire-passing hole (320), and the through slot (311) is provided with a wire-passing hole (320). An inner sleeve (321) is adapted to be provided in the wire hole (320), and a straightening cylindrical hole portion (3211) for contacting the steel wire (99) is formed in the inner sleeve (321). An input end bell mouth (3201) is formed at one end of the wire hole (320), and an output end bell mouth (3202) is formed at the other end corresponding to the wire hole (320). The inner sleeve (321) is provided between the input end bell mouth (3201) and the output end bell mouth (3202).

2. The high-speed straightening machine according to claim 1, characterized in that: A positioning step (3203) is formed at one end of the wire hole (320), and an end of the inner sleeve (321) that is relatively close to the output end bell mouth (3202) is in contact with the positioning step (3203).

3. The high-speed straightening machine according to claim 1 or 2, characterized in that: An input end conical hole portion (3212) is formed at one end of the inner sleeve (321), and an output end conical hole portion (3213) is formed at the other corresponding end of the inner sleeve (321). The straightening cylindrical hole portion (3211) is arranged between the input end conical hole portion (3212) and the output end conical hole portion (3213), and the input end conical hole portion (3212) and the output end conical hole portion (3213) are arranged in back-to-back relation.

4. The high-speed straightening machine according to claim 3, characterized in that: An observation port (313) is formed on the rotating shaft (31), the observation port (313) radially passes through the rotating shaft (31), and the observation port (313) is arranged between adjacent through slots (311).

5. The high-speed straightening machine according to claim 1, characterized in that: Adjustment screws (33) are respectively provided at both ends of the through slot (311), and the straightening block (32) is clamped between the two corresponding adjustment screws (33). The straightening block (32) can slide and adjust its position in the through slot (311).

6. The high-speed straightening machine according to claim 5, characterized in that: A mounting hole (312) is formed on the rotating shaft (31), the mounting hole (312) is perpendicular to the rotation axis of the rotating shaft (31), the through slot (311) is provided through the corresponding mounting hole (312), and the adjusting screw (33) is screwed into the corresponding mounting hole (312).

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