Rod piece straightening device

Abstract

The utility model relates to a rod piece straightening device which comprises a support, a placing piece, a clamping assembly, a driving assembly and an eccentric wheel assembly, the placing piece, the clamping assembly and the driving assembly are respectively connected with the support, the eccentric wheel assembly is connected with the driving assembly and comprises a straightening cylinder piece, the placing piece is used for placing a rod piece, and the clamping assembly is used for clamping and fixing the rod piece. The driving assembly is used for driving the straightening cylinder part to eccentrically rotate, the rotating axis of the straightening cylinder part coincides with the axis of the rod part, the diameter of the inner wall of the straightening cylinder part is larger than that of the rod part, and the straightening cylinder part extrudes the straightening rod part during rotation. The driving assembly drives the eccentric wheel assembly to rotate, then the straightening cylinder piece rotates eccentrically, during eccentric rotation, the inner wall of the straightening cylinder piece continuously rotates and extrudes the rod piece, the rotating axis of the straightening cylinder piece coincides with the axis of the rod piece, and then the rod piece is extruded and straightened during rotation. The rod piece does not need to be repeatedly straightened in different directions, and the straightening efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of rod straightening, and more specifically, to a rod straightening device. Background Art

[0002] During the processing or use of rods, when the rods are bent, the rods need to be straightened. In the existing rod straightening methods, the curvature of the rods is generally detected by a high-precision sensor, and then the straightening equipment is used to press the parts with higher curvature. The first two steps are repeated to straighten the rods. During the process, the rods are prone to over-straightening. Therefore, when straightening rods with higher accuracy, the first two steps are repeated more times, which also leads to low production efficiency and high production costs. Moreover, during the straightening process, when the equipment presses the bent part of the rod, the force on the rod is also concentrated, which is easy to cause damage to the rod, especially screw parts or hollow rods, which are more likely to be damaged during the straightening process. Utility Model Content

[0003] The utility model provides a rod straightening device to overcome the defect of low efficiency of straightening rods in the above-mentioned prior art, so as to improve the efficiency of rod straightening.

[0004] In order to solve the above technical problems, the technical solution adopted by the utility model is: a rod straightening device, comprising: a bracket, a placement piece connected to the bracket, a clamping assembly and a driving assembly, and an eccentric wheel assembly connected to the driving assembly, the eccentric wheel assembly includes a straightening cylinder, the placement piece is used to place the rod, the clamping assembly is used to clamp and fix the rod, and the driving assembly is used to drive the straightening cylinder to rotate eccentrically, the rotation axis of the straightening cylinder coincides with the axis of the rod, the inner wall diameter of the straightening cylinder is larger than the rod and squeezes the straightening rod when rotating.

[0005] The rod is placed on the placement member and one of the bent ends is extended into the straightening cylinder. The clamping assembly fixes the rod, and the part of the rod that does not need to be straightened is clamped and fixed first. The driving assembly drives the eccentric wheel assembly to rotate, and the straightening cylinder rotates together. The rotation axis of the driving unit coincides with the original axis of the rod, that is, coincides with the axis of the part of the rod that does not need to be straightened. During the rotation process, the straightening cylinder will leave a cylindrical columnar space at the rotation axis. The axis of the columnar space coincides with the rotation axis of the driving unit. When the straightening cylinder rotates, its inner wall will continuously squeeze the rod. When the diameter of the columnar space is equal to the diameter of the rod, the rod can be straightened. During the straightening process, the straightening cylinder is always in a rotating state, with high extrusion efficiency, continuous straightening process, relatively high straightening efficiency, and saving the time required for straightening. In addition, during the process of rotating extrusion straightening, the straightening cylinder squeezes the rod in multiple directions to avoid excessive concentration of force on the rod and avoid damage to the rod. Furthermore, the working surface of the placement member is a concave arc surface, and the diameter of the arc surface is equal to the diameter of the rod. Furthermore, the drive assembly includes a rotary drive unit, and the rotary drive unit can adopt a rotary cylinder, a rotary oil cylinder or a rotary motor. Specifically, the eccentric wheel assembly is integrally mounted on the rotating end of the rotary drive unit. The clamping assembly can adopt a clamping cylinder, a telescopic cylinder, a telescopic oil cylinder or a telescopic motor. The telescopic cylinder, the telescopic oil cylinder or the telescopic motor is used to make the fixing action abutment and extrusion fixing, for example, the rod is abutment and extrusion fixed on the placement member.

[0006] Preferably, the eccentric wheel assembly further comprises an eccentric disk connected to the driving assembly, and the eccentric disk and the straightening cylinder are detachably connected.

[0007] The eccentric rotation movement is realized by the eccentric disk, and the straightening cylinder can be detachably mounted on the eccentric disk, which is convenient for replacing the straightening cylinder, and is particularly convenient for adjusting the position of the straightening cylinder, so that a single straightening cylinder can be adapted to rods of more diameters.

[0008] Preferably, the eccentric wheel assembly also includes a connecting shaft connected to the eccentric disk, the straightening cylinder is rotatably connected to the connecting shaft, the connecting shaft and the straightening cylinder are detachably connected, and the axis of the connecting shaft coincides with the axis of the inner wall of the straightening cylinder.

[0009] In order to avoid excessive friction between the straightening cylinder and the rod when the straightening cylinder rotates and extrude the rod, a connecting shaft is provided so that the straightening cylinder can rotate relative to the connecting shaft, thereby changing the sliding friction between the straightening cylinder and the rod into rolling friction, thereby avoiding excessive friction and damage to the rod. The axis of the straightening cylinder and the axis of the eccentric disk remain relatively unchanged, and the connecting shaft is provided at the axis of the straightening cylinder.

[0010] Preferably, the connecting shaft is rotatably connected to the eccentric disk.

[0011] The connecting shaft is rotatably connected to the eccentric disk, which further increases the rotation effect of the straightening cylinder and fully reduces the friction between the straightening cylinder and the rod.

[0012] Preferably, the clamping assembly includes at least two first telescopic members connected to the bracket and first abutment members respectively connected to the first telescopic members, the first telescopic members are symmetrically arranged with the axis of the rod as the central axis, and the first abutment members abut against the rod and clamp the rod.

[0013] The two first telescopic members are arranged opposite to the rod and extend toward the rod at the same time, so that the rod can be abutted and squeezed to fix the rod through the first abutment member. Furthermore, the working surface of the first abutment member is a concave arc surface, and the diameter of the arc surface is equal to the diameter of the rod.

[0014] Preferably, the first telescopic member is a telescopic cylinder.

[0015] Preferably, it also includes a push rod assembly connected to the bracket, the push rod assembly includes a moving part slidably connected to the bracket and a driving part connected to the moving part, the driving part drives the moving part to move and thereby pushes the rod to move toward the straightening cylinder.

[0016] In order to reduce the difficulty of operation for workers, a push rod assembly is provided to push the end of the rod into the straightening cylinder. The moving direction of the moving part is in the same direction as the axis of the rod. The driving part drives the moving part to move toward the straightening cylinder, and then pushes the rod into the straightening cylinder. Specifically, the driving part is a linear driving part, such as a linear motor or a telescopic cylinder.

[0017] Preferably, the push rod assembly further comprises a tubular member connected to the moving member, wherein the tubular member is used to cooperate with the end of the rod member and push the rod member to move.

[0018] The cylindrical member is provided to cooperate with the end of the rod and prevent the end of the rod from shaking. The cylindrical member cooperates with the fixing function of the clamping assembly to improve the fixing accuracy of the rod, thereby ensuring the straightening accuracy of the rod. Specifically, the axis of the cylindrical member coincides with the rotation axis of the eccentric disk. Furthermore, the inner wall diameter of the cylindrical member is equal to or slightly larger than the diameter of the rod.

[0019] Preferably, the push rod assembly also includes two second telescopic members respectively connected to the moving member and second abutment members respectively connected to the second telescopic members, the second telescopic members are symmetrically arranged with the axis of the tubular member as the central axis, the second abutment members abut against the rod member and clamp the rod member, and the tubular member is provided with an avoidance hole for avoiding the second abutment member.

[0020] The structures of the second telescopic member and the second abutment member are similar to those of the first telescopic member and the first abutment member. The second telescopic member and the second abutment member further fix the end of the rod. The second abutment member penetrates into the tubular member through the air avoidance hole to abut and squeeze the rod to fix it.

[0021] Preferably, a guiding slope is provided at the end of the straightening cylinder.

[0022] After the guide slope is set, the rod can be better extended into the straightening cylinder when the push rod assembly pushes the rod to avoid getting stuck.

[0023] Compared with the prior art, the utility model has the following beneficial effects:

[0024] The driving assembly drives the eccentric wheel assembly to rotate, thereby causing the straightening cylinder to rotate eccentrically. During the eccentric rotation, the inner wall of the straightening cylinder continuously rotates and squeezes the rod, and the rotation axis of the straightening cylinder coincides with the axis of the rod, thereby squeezing and straightening the rod during rotation. There is no need to repeatedly straighten the rod in different directions, thereby improving the straightening efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the overall structure of a rod straightening device of the utility model;

[0026] Figure 2 yes Figure 1 A magnified schematic diagram of part A;

[0027] Figure 3 This is a schematic diagram of the working state of a rod straightening device of the utility model;

[0028] Figure 4 yes Figure 3 A magnified schematic diagram of part B;

[0029] Figure 5 It is a structural schematic diagram of an eccentric wheel assembly of a rod straightening device of the utility model;

[0030] Figure 6 The utility model is a schematic diagram of the working state of a straightening cylinder of a rod straightening device.

[0031] In the figure: 1. bracket; 2. placement member; 201. air avoidance groove; 3. clamping assembly; 301. first telescopic member; 302. first abutment member; 4. driving assembly; 5. eccentric wheel assembly; 501. straightening cylinder member; 502. eccentric disk; 503. connecting shaft; 6. push rod assembly; 601. moving member; 602. cylindrical member; 603. second telescopic member; 604. second abutment member; 7. guiding slope; 8. columnar space; 9. rod member. DETAILED DESCRIPTION

[0032] The drawings are only for illustrative purposes and cannot be construed as limiting the present invention. To better illustrate the present embodiment, some parts of the drawings may be omitted, enlarged, or reduced, and do not represent the size of the actual product. For those skilled in the art, it is understandable that some well-known structures and their descriptions may be omitted in the drawings. The positional relationships described in the drawings are only for illustrative purposes and cannot be construed as limiting the present invention.

[0033] The same or similar numbers in the drawings of the embodiments of the present invention correspond to the same or similar parts; in the description of the present invention, it should be understood that if the terms "upper", "lower", "left", "right", "long", "short" and the like indicate directions or positional relationships based on the directions or positional relationships shown in the drawings, they are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, the terms describing the positional relationship in the drawings are only used for illustrative purposes and cannot be understood as limitations on this patent. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0034] The technical solution of the present invention is further described in detail below through specific embodiments and in conjunction with the accompanying drawings:

[0035] Example 1

[0036] like Figure 1 , Figure 2 and Figure 6 As shown, a rod straightening device includes: a bracket 1, a placement member 2 respectively connected to the bracket 1, a clamping assembly 3 and a driving assembly 4, and an eccentric wheel assembly 5 connected to the driving assembly 4, the eccentric wheel assembly 5 includes a straightening cylinder 501, the placement member 2 is used to place the rod 9, the clamping assembly 3 is used to clamp and fix the rod 9, and the driving assembly 4 is used to drive the straightening cylinder 501 to rotate eccentrically, the rotation axis of the straightening cylinder 501 coincides with the axis of the rod 9, the inner wall diameter of the straightening cylinder 501 is larger than the rod 9 and squeezes the straightening rod 9 when rotating.

[0037] The rod 9 is placed on the placement member 2 and one of its bent ends extends into the straightening cylinder 501. The clamping assembly 3 fixes the rod 9, and the portion of the rod 9 that does not need to be straightened is clamped and fixed first. The driving assembly 4 drives the eccentric wheel assembly 5 to rotate, and the straightening cylinder 501 rotates together. The rotation axis of the driving unit coincides with the original axis of the rod 9, that is, coincides with the axis of the portion of the rod 9 that does not need to be straightened. Figure 6As shown, the straightening cylinder 501 will leave a cylindrical columnar space 8 at the rotation axis during the rotation process. The axis of the columnar space 8 coincides with the rotation axis of the drive unit. The inner wall of the straightening cylinder 501 will continuously squeeze the rod 9 when it rotates. When the diameter of the columnar space 8 is equal to the diameter of the rod 9, the rod 9 can be straightened. During the straightening process, the straightening cylinder 501 is always in a rotating state, the extrusion efficiency is high, the straightening process is continuous, the straightening efficiency is relatively high, and the time required for straightening is saved. In the process of rotating extrusion straightening, the straightening cylinder 501 squeezes the rod 9 in multiple directions to avoid excessive concentration of force on the rod 9 and avoid damage to the rod 9. Further, the working surface of the placement member 2 is a concave arc surface, and the diameter of the arc surface is equal to the diameter of the rod 9. Further, the drive assembly 4 includes a rotary drive unit, and the rotary drive unit can be a rotary cylinder, a rotary oil cylinder or a rotary motor. Specifically, the eccentric wheel assembly 5 is integrally mounted on the rotating end of the rotary drive unit. The clamping assembly 3 can be a clamping cylinder, a telescopic cylinder, a telescopic oil cylinder or a telescopic motor. The telescopic cylinder, the telescopic oil cylinder or the telescopic motor is used to fix the fixing action by abutting and squeezing, for example, the rod 9 is fixed on the placement member 2 by abutting and squeezing.

[0038] The beneficial effects of this embodiment are as follows: the driving component 4 drives the eccentric wheel component 5 to rotate, thereby causing the straightening cylinder 501 to rotate eccentrically. During the eccentric rotation, the inner wall of the straightening cylinder 501 continuously rotates and squeezes the rod 9. The rotation axis of the straightening cylinder 501 coincides with the axis of the rod 9, thereby squeezing and straightening the rod 9 during rotation. There is no need to repeatedly straighten the rod 9 in different directions, thereby improving the straightening efficiency.

[0039] Example 2

[0040] like Figure 1-5 As shown, based on Example 1, the difference from Example 1 is that:

[0041] The eccentric wheel assembly 5 also includes an eccentric disk 502 connected to the driving assembly 4, and the eccentric disk 502 and the straightening cylinder 501 are detachably connected. The eccentric wheel assembly 5 also includes a connecting shaft 503 connected to the eccentric disk 502, and the straightening cylinder 501 is rotatably connected to the connecting shaft 503. The connecting shaft 503 and the straightening cylinder 501 are detachably connected, and the axis of the connecting shaft 503 coincides with the axis of the inner wall of the straightening cylinder 501. The connecting shaft 503 is rotatably connected to the eccentric disk 502. The clamping assembly 3 includes at least two first telescopic members 301 connected to the bracket 1 and first abutting members 302 respectively connected to the first telescopic members 301, the first telescopic members 301 are symmetrically arranged with the axis of the rod 9 as the central axis, and the first abutting member 302 abuts against the rod 9 and clamps and fixes the rod 9. The first telescopic member 301 is a telescopic cylinder.

[0042] The eccentric rotation movement is realized by the eccentric disk 502, and the straightening cylinder 501 can be detachably mounted on the eccentric disk 502, which is convenient for replacing the straightening cylinder 501, and is particularly convenient for adjusting the position of the straightening cylinder 501, so that a single straightening cylinder 501 can adapt to rods 9 of more diameters. In order to avoid excessive friction between the straightening cylinder 501 and the rod 9 when rotating and extruding the rod 9, a connecting shaft 503 is provided, so that the straightening cylinder 501 can rotate relative to the connecting shaft 503, so that the sliding friction between the straightening cylinder 501 and the rod 9 is changed to rolling friction, avoiding the situation where excessive friction damages the rod 9. Among them, the axis of the straightening cylinder 501 and the axis of the eccentric disk 502 are relatively unchanged, and the connecting shaft 503 is provided at the axis position of the straightening cylinder 501. The connecting shaft 503 is rotatably connected to the eccentric disk 502, further increasing the rotation effect of the straightening cylinder 501 and fully reducing the friction between the straightening cylinder 501 and the rod 9. The two first telescopic members 301 are arranged opposite to the rod 9 and extend toward the rod 9 at the same time, so that the rod 9 can be abutted and squeezed by the first abutting member 302 to fix the rod 9. Furthermore, the working surface of the first abutting member 302 is a concave arc surface, and the diameter of the arc surface is equal to the diameter of the rod 9.

[0043] Further, in this embodiment, if Figure 2 As shown, the placement member 2 is provided with an escape groove 201 for avoiding the first abutting member 302 .

[0044] Further, in this embodiment, if Figure 5 As shown, a bearing is provided between the connecting shaft 503 and the eccentric disc 502 , and a bearing is also provided between the connecting shaft 503 and the straightening cylinder 501 .

[0045] The remaining features and working principles of this embodiment are consistent with those of Embodiment 1.

[0046] Example 3

[0047] like Figure 1-4 As shown, based on Example 1 or Example 2, Example 1 or Example 2 is further limited, and the difference is that:

[0048] The push rod assembly 6 connected with the bracket 1 is also included. The push rod assembly 6 includes a moving member 601 slidably connected with the bracket 1 and a driving member connected with the moving member 601. The driving member drives the moving member 601 to move and then pushes the rod 9 to move toward the straightening cylinder 501. The push rod assembly 6 also includes a cylindrical member 602 connected with the moving member 601, and the cylindrical member 602 is used to cooperate with the end of the rod 9 and push the rod 9 to move. The push rod assembly 6 also includes two second telescopic members 603 connected with the moving member 601 respectively and a second abutment member 604 connected with the second telescopic member 603 respectively, the second telescopic member 603 is symmetrically arranged with the axis of the cylindrical member 602 as the central axis, the second abutment member 604 abuts against the rod 9 and clamps and fixes the rod 9, and the cylindrical member 602 is provided with a clearance hole for avoiding the second abutment member 604. The end of the straightening cylinder 501 is provided with a guide inclined surface 7.

[0049] In order to reduce the difficulty of operation for workers, a push rod assembly 6 is provided to push the end of the rod 9 into the straightening cylinder 501. The moving direction of the moving member 601 is in the same direction as the axis of the rod 9. The driving member drives the moving member 601 to move toward the straightening cylinder 501, thereby pushing the rod 9 into the straightening cylinder 501. Specifically, the driving member is a linear driving member, such as a linear motor or a telescopic cylinder. A cylindrical member 602 is provided to cooperate with the end of the rod 9 and prevent the end of the rod 9 from shaking. The cylindrical member 602 cooperates with the fixing function of the clamping assembly 3 to improve the fixing accuracy of the rod 9, thereby ensuring the straightening accuracy of the rod 9. Specifically, the axis of the cylindrical member 602 coincides with the rotation axis of the eccentric disk 502. Furthermore, the inner wall diameter of the cylindrical member 602 is equal to or slightly larger than the diameter of the rod 9. The structures of the second telescopic member 603 and the second abutting member 604 are similar to those of the first telescopic member 301 and the first abutting member 302, respectively. The second telescopic member 603 and the second abutting member 604 further fix the end of the rod 9. The second abutting member 604 penetrates into the cylindrical member 602 through the air-avoiding hole to abut and squeeze the rod 9. After the guide slope 7 is provided, when the push rod assembly 6 pushes the rod 9, the rod 9 can be better extended into the straightening cylinder 501 to avoid being stuck.

[0050] Further, such as Figure 4 As shown, the end of the cylindrical member 602 is provided with a guide surface.

[0051] The rest of the working principle and working process of this embodiment are consistent with those of Embodiment 1 or Embodiment 2.

[0052] Obviously, the above embodiments of the utility model are only examples for clearly explaining the utility model, and are not intended to limit the implementation methods of the utility model. For ordinary technicians in the relevant field, other different forms of changes or modifications can be made on the basis of the above description. It is not necessary and impossible to list all the implementation methods here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the utility model should be included in the protection scope of the claims of the utility model.

Claims

1. A rod straightening device, characterized in that: include: A support (1), a placement member (2) respectively connected to the support (1), a clamping assembly (3) and a driving assembly (4), and an eccentric wheel assembly (5) connected to the driving assembly (4), wherein the eccentric wheel assembly (5) comprises a straightening cylinder (501), the placement member (2) is used to place a rod (9), the clamping assembly (3) is used to clamp and fix the rod (9), and the driving assembly (4) is used to drive the straightening cylinder (501) to rotate eccentrically, the rotation axis of the straightening cylinder (501) coincides with the axis of the rod (9), and the inner wall diameter of the straightening cylinder (501) is larger than that of the rod (9) and squeezes the straightening rod (9) when rotating.

2. A rod straightening device according to claim 1, characterized in that: The eccentric wheel assembly (5) further comprises an eccentric disc (502) connected to the driving assembly (4), and the eccentric disc (502) and the straightening cylinder (501) are detachably connected.

3. A rod straightening device according to claim 2, characterized in that: The eccentric wheel assembly (5) further comprises a connecting shaft (503) connected to the eccentric disc (502); the straightening cylinder (501) is rotatably connected to the connecting shaft (503); the connecting shaft (503) and the straightening cylinder (501) are detachably connected; the axis of the connecting shaft (503) coincides with the axis of the inner wall of the straightening cylinder (501).

4. A rod straightening device according to claim 3, characterized in that: The connecting shaft (503) is rotationally connected to the eccentric disk (502).

5. A rod straightening device according to claim 1, characterized in that: The clamping assembly (3) comprises at least two first telescopic members (301) connected to the bracket (1) and first abutment members (302) respectively connected to the first telescopic members (301), the first telescopic members (301) being symmetrically arranged with the axis of the rod (9) as the central axis, and the first abutment members (302) abut against the rod (9) and clamp and fix the rod (9).

6. A rod straightening device according to claim 5, characterized in that: The first telescopic member (301) is a telescopic cylinder.

7. A rod straightening device according to any one of claims 1 to 6, characterized in that: It also includes a push rod assembly (6) connected to the bracket (1), the push rod assembly (6) includes a moving member (601) slidably connected to the bracket (1) and a driving member connected to the moving member (601), the driving member drives the moving member (601) to move and thereby pushes the rod member (9) to move toward the straightening cylinder member (501).

8. A rod straightening device according to claim 7, characterized in that: The push rod assembly (6) further comprises a tubular member (602) connected to the moving member (601), wherein the tubular member (602) is used to cooperate with the end of the rod member (9) and push the rod member (9) to move.

9. A rod straightening device according to claim 8, characterized in that: The push rod assembly (6) also includes two second telescopic members (603) respectively connected to the moving member (601) and second abutment members (604) respectively connected to the second telescopic members (603), the second telescopic members (603) being symmetrically arranged with the axis of the tubular member (602) as the central axis, the second abutment members (604) abutting against the rod member (9) and clamping the rod member (9), and the tubular member (602) is provided with an avoidance hole for avoiding the second abutment member (604).

10. The rod straightening device according to claim 7, characterized in that: The end of the straightening cylinder (501) is provided with a guiding inclined surface (7).

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