Straightening device of piston rod

Abstract

The utility model provides a straightening device of a piston rod, and aims to solve the technical problems that the existing straightening device of the piston rod is slow in action and low in efficiency. According to the technical scheme, the straightening device for the piston rod comprises a supporting mechanism and a pressing mechanism; the supporting mechanism comprises a plurality of supporting units distributed in the left-right direction. The supporting unit comprises a first wheel carrier and a pair of supporting wheels which are rotatably mounted on the first wheel carrier; the circumferential surface of the supporting wheel supports the piston rod; the pressing mechanism comprises a plurality of pressing units distributed in the left-right direction. The pressing unit comprises a second wheel carrier and a pair of pressing rollers which are rotatably mounted on the second wheel carrier; the peripheral surface of the compression roller presses the piston rod; the pressing mechanism is provided with a motor for driving the pressing roller to rotate; the pressing mechanism is matched with a hydraulic cylinder which drives the pressing mechanism to move in the vertical direction. The piston rod straightening device can straighten the piston rod more quickly and efficiently.

Description

Technical Field

[0001] The utility model relates to the technical field of straightening equipment, in particular to a straightening device for a piston rod. Background Art

[0002] The piston rod is a connecting component that supports the piston to do work. It is widely used in hydraulics, pneumatics, engineering machinery, automobile manufacturing, conveying machinery and other fields. Among them, straightness is an important parameter to measure the quality of the piston rod, which has a direct impact on the life and reliability of the entire product. Therefore, when processing the piston rod, the piston rod needs to be straightened.

[0003] The existing piston rod straightening device generally presses the piston rod tightly with the top and drives the piston rod to rotate in a step-by-step manner; at the same time, a support is set below the piston rod, and a pressing member driven by a hydraulic cylinder is set above the piston rod; whenever the piston rod stops rotating, the pressing member presses the piston rod downward to complete the straightening of the piston rod. This straightening method has the problems of slow action and low efficiency. Summary of the invention

[0004] The utility model aims to provide a piston rod straightening device, which can complete the straightening of the piston rod more quickly and efficiently.

[0005] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0006] The straightening device of the piston rod comprises: a supporting mechanism and a pressing mechanism; the supporting mechanism comprises: a plurality of supporting units distributed along the left-right direction; the supporting unit comprises: a first wheel frame, a pair of supporting wheels rotatably mounted on the first wheel frame; the circumference of the supporting wheel supports the piston rod; the pressing mechanism comprises: a plurality of pressing units distributed along the left-right direction; the pressing unit comprises: a second wheel frame, a pair of pressure rollers rotatably mounted on the second wheel frame; the circumference of the pressure roller presses the piston rod; the pressing mechanism is provided with a motor for driving the pressure roller to rotate; the pressing mechanism is adapted to a hydraulic cylinder for driving it to move in the up-down direction.

[0007] Optionally, the pressing mechanism further includes: a lifting frame; each pressing unit of the pressing mechanism is installed on the lifting frame; and the hydraulic cylinder drives the lifting frame to move in an up and down direction, thereby driving each pressing unit to move synchronously.

[0008] Optionally, the lifting frame includes: a top plate and a bottom plate; the top plate and the bottom plate are respectively provided with a plurality of guide holes and adapted to guide rods; the portion of the guide rod located between the top plate and the bottom plate is sleeved with a spring; the upper and lower ends of the guide rod are respectively provided with limit parts to prevent the top plate, the bottom plate and the guide rod from detaching; the driving shaft of the hydraulic cylinder is connected to the top plate, and the pressing unit is installed on the bottom plate.

[0009] Optionally, the upper and lower ends of the guide rod are respectively provided with threaded heads and adapted with nuts; the nuts constitute the limiting parts.

[0010] Optionally, the pressing mechanism installs a motor on one of the pressing units, which constitutes an active unit; the two pressing rollers of the active unit are connected by gears; the motor drives one of the pressing rollers of the active unit to rotate, thereby driving the other pressing roller of the active unit to rotate synchronously in the same direction.

[0011] Optionally, the pressure roller is rotationally connected to the second wheel frame via a bearing.

[0012] Optionally, it also includes: a positioning mechanism; the positioning mechanism includes: a limit piece located at the right end of the support mechanism, and a positioning unit located at the left end of the support mechanism to push the piston rod to the right.

[0013] Optionally, the positioning unit includes: a positioning member and a first power source driving the positioning member to move in the left-right direction.

[0014] The working principle of the utility model is as follows: the piston rod is placed on the supporting mechanism, so that the supporting wheel supports the piston rod; the hydraulic cylinder drives the pressing mechanism to move downward, so that the pressing roller of the pressing mechanism presses the piston rod; the motor drives the pressing roller to rotate, thereby driving the piston rod to rotate; in this way, the piston rod pressed between the supporting wheel and the pressing roller can be rotated, thereby straightening the piston rod in all directions around the piston rod.

[0015] It can be seen from this that the beneficial effect of the utility model is that the straightening of the piston rod can be completed more quickly and efficiently. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0017] Figure 1 It is a schematic diagram of the structure of the utility model;

[0018] Figure 2 This is a schematic diagram of straightening the piston rod according to the utility model;

[0019] Figure 3 It is a schematic diagram of the transmission connection between the pressure rollers through gears;

[0020] Figure 4 The utility model is a schematic diagram of setting a feeding mechanism and a unloading mechanism.

[0021] Attached figures: 1. Support mechanism; 2. Pressing mechanism; 3. Support unit; 4. Support wheel; 5. Pressing unit; 6. Pressing roller; 7. Motor; 8. Hydraulic cylinder; 9. Lifting frame; 10. Top plate; 11. Bottom plate; 12. Guide rod; 13. Spring; 14. Limiting part; 15. Limiting member; 16. Positioning member; 17. First power source; 18. Conveyor belt; 19. Pushing member; 20. Second power source; 21. Guide member; 22. Third power source; 23. Support member; 24. Laser sensor. DETAILED DESCRIPTION

[0022] In the following, only some exemplary embodiments are briefly described. As those skilled in the art will appreciate, the described embodiments may be modified in various ways without departing from the spirit or scope of the present invention. Therefore, the drawings and descriptions are considered to be exemplary and non-restrictive in nature.

[0023] In the description of the present invention, it should be understood that the terms "front", "rear", "left", "right" and the like indicate directions or positional relationships based on the attached Figure 1 The orientation or positional relationship shown is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0024] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0025] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or a communication; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0026] The disclosure below provides many different embodiments or examples to implement different structures of the present invention. In order to simplify the disclosure of the present invention, the components and settings of specific examples are described below. Of course, they are only examples and are not intended to limit the present invention.

[0027] The following is combined with Figure 1 ~Attached Figure 4 The embodiments of the present utility model are described in detail.

[0028] The embodiment of the utility model provides a straightening device for a piston rod. The straightening device comprises: a support mechanism 1 and a pressing mechanism 2. The support mechanism 1 comprises: a plurality of support units 3 distributed along the left-right direction. The support unit 3 comprises: a first wheel frame, a pair of support wheels 4 rotatably mounted on the first wheel frame. It should be understood that the two support wheels 4 of the support unit 3 are arranged along the front-to-back direction, and the wheel axle extends in the left-to-right direction. The circumference of the support wheel 4 supports the piston rod. The pressing mechanism 2 comprises: a plurality of pressing units 5 distributed along the left-to-right direction. The pressing unit 5 comprises: a second wheel frame, a pair of pressure rollers 6 rotatably mounted on the second wheel frame. It should be understood that the two pressure rollers 6 of the pressing unit 5 are arranged along the front-to-back direction and extend in the left-to-right direction. Arranging a plurality of pressing units 5 along the length direction of the piston rod and setting the length of the pressure roller 6 to be shorter can achieve a better straightening effect and avoid affecting the straightening effect due to the bending of the pressure roller 6 itself. The circumference of the pressure roller 6 presses the piston rod. The pressing mechanism 2 is provided with a motor 7 for driving the pressure roller 6 to rotate. The pressing mechanism 2 is adapted to drive the hydraulic cylinder 8 to move in the up-down direction. In addition, a detection mechanism may be provided to detect the straightness of the piston rod through a laser sensor 24 or a photoelectric sensor while the piston rod is being straightened.

[0029] The specific implementation of the utility model is described below: the piston rod is placed on the support mechanism 1, and the support wheel 4 supports the piston rod; the hydraulic cylinder 8 drives the pressing mechanism 2 to move downward, so that the pressing roller 6 of the pressing mechanism 2 presses the piston rod; the motor 7 drives the pressing roller 6 to rotate, thereby driving the piston rod to rotate; in this way, the piston rod pressed between the support wheel 4 and the pressing roller 6 can be rotated, so that the piston rod can be straightened in all directions around the piston rod. The utility model can complete the straightening of the piston rod more quickly and efficiently, and has the value of popularization and use.

[0030] Furthermore, the pressing mechanism 2 further comprises: a lifting frame 9; each pressing unit 5 of the pressing mechanism 2 is installed on the lifting frame 9; and the hydraulic cylinder 8 drives the lifting frame 9 to move in the up and down directions, thereby driving each pressing unit 5 to move synchronously.

[0031] Furthermore, the lifting frame 9 includes: a top plate 10 and a bottom plate 11; the top plate 10 and the bottom plate 11 are provided with a plurality of guide holes correspondingly, and are adapted to guide rods 12; the portion of the guide rod 12 between the top plate 10 and the bottom plate 11 is sleeved with a spring 13; the upper and lower ends of the guide rod 12 are provided with stoppers 14 respectively to prevent the top plate 10, the bottom plate 11 and the guide rod 12 from being separated; the driving shaft of the hydraulic cylinder 8 is connected to the top plate 10, and the pressing unit 5 is installed on the bottom plate 11. It should be understood that a spring 13 with a higher stiffness is usually selected. The spring 13 is arranged between the top plate 10 and the bottom plate 11 so that the distance between the top plate 10 and the bottom plate 11 has a certain elasticity; at the same time, the hydraulic cylinder 8 is connected to the top plate 10, and the second wheel frame is connected to the bottom plate 11; in this way, the piston rod can be pressed straight more smoothly; and the piston rod is prevented from being damaged or ejected due to sudden and violent forced pressing.

[0032] Furthermore, the upper and lower ends of the guide rod 12 are respectively provided with threaded heads and adapted with nuts; the nuts constitute the limiting portion 14. It should be understood that the use of nuts to form the limiting portion 14 makes disassembly and assembly more convenient. According to actual conditions, in order to ensure stability, the nuts and the guide rod 12 can also be slightly spot welded.

[0033] Furthermore, the pressing mechanism 2 installs a motor 7 on one of the pressing units 5, and the pressing unit 5 constitutes an active unit; the two pressing rollers 6 of the active unit are connected by gears; the motor 7 drives one of the pressing rollers 6 of the active unit to rotate, thereby driving the other pressing roller 6 of the active unit to rotate synchronously in the same direction.

[0034] Furthermore, the pressure roller 6 is rotatably connected to the second wheel frame via a bearing.

[0035] Furthermore, it also includes: a positioning mechanism; the positioning mechanism includes: a limiter 15 located at the right end of the support mechanism 1, and a positioning unit located at the left end of the support mechanism 1 to push the piston rod to the right.

[0036] Further, the positioning unit includes: a positioning member 16, and a first power source 17 for driving the positioning member 16 to move in the left-right direction. It should be understood that the first power source 17 is preferably a cylinder. The first power source 17 drives the positioning member 16 to push the piston rod to move rightward, so that the right end of the piston rod abuts against the limit member 15, and the positioning of the piston rod can be completed; finally, the first power source 17 drives the positioning member 16 to reset, and then the hydraulic cylinder 8 drives the pressing mechanism 2 to move downward, so that the piston rod can be pressed and straightened.

[0037] In addition, the straightening device can also be provided with a loading mechanism on the front side of the support mechanism 1, and a unloading mechanism on the bottom of the support mechanism 1, so as to realize the mechanized loading and unloading of the piston rod. The loading mechanism includes: a conveyor belt 18 for conveying the piston rod from left to right, and a pushing unit arranged on the front side of the conveyor belt 18 to push the piston rod backward. The pushing unit includes: a pushing member 19, and a second power source 20 for driving the pushing member 19 to move forward and backward. The unloading mechanism includes: a guide member 21, and a third power source 22 for driving the guide member 21 to move up and down. The top of the guide member 21 has a guide slope inclined downward from front to back, so as to guide the piston rod to slide backward away from the support mechanism 1 when the piston rod is lifted. Usually, the second power source 20 and the third power source 22 are preferably cylinders. A support member 23 can also be arranged between the conveyor belt 18 and the support mechanism 1 to support the piston rod pushed by the pushing unit.

[0038] Although specific embodiments of the present invention are described above, those skilled in the art should understand that various changes or modifications may be made to these embodiments without departing from the principle and essence of the present invention, but these changes and modifications are all within the scope of protection of the present invention.

Claims

1. A piston rod straightening device, characterized in that: include: A supporting mechanism (1) and a pressing mechanism (2); The support mechanism (1) comprises: a plurality of support units (3) distributed along the left-right direction; The support unit (3) comprises: a first wheel frame, and a pair of support wheels (4) rotatably mounted on the first wheel frame; The circumference of the support wheel (4) supports the piston rod; The pressing mechanism (2) comprises: a plurality of pressing units (5) distributed along the left-right direction; The pressing unit (5) comprises: a second wheel frame, and a pair of pressing rollers (6) rotatably mounted on the second wheel frame; The circumference of the pressure roller (6) presses the piston rod; The pressing mechanism (2) is provided with a motor (7) for driving the pressing roller (6) to rotate; The pressing mechanism (2) is adapted to be driven by a hydraulic cylinder (8) that moves the pressing mechanism in an up-and-down direction.

2. The piston rod straightening device according to claim 1, characterized in that: The pressing mechanism (2) further comprises: a lifting frame (9); Each pressing unit (5) of the pressing mechanism (2) is mounted on a lifting frame (9); The hydraulic cylinder (8) drives the lifting frame (9) to move in the up and down directions, thereby driving each pressing unit (5) to move synchronously.

3. The piston rod straightening device according to claim 2, characterized in that: The lifting frame (9) comprises: a top plate (10) and a bottom plate (11); The top plate (10) and the bottom plate (11) are respectively provided with a plurality of guide holes and adapted to the guide rods (12); The portion of the guide rod (12) located between the top plate (10) and the bottom plate (11) is sleeved with a spring (13); The upper and lower ends of the guide rod (12) are respectively provided with limit portions (14) to prevent the top plate (10), the bottom plate (11) and the guide rod (12) from being separated; The driving shaft of the hydraulic cylinder (8) is connected to the top plate (10), and the pressing unit (5) is mounted on the bottom plate (11).

4. The piston rod straightening device according to claim 3, characterized in that: The upper and lower ends of the guide rod (12) are respectively provided with threaded heads and adapted with nuts; the nuts constitute the limiting portion (14).

5. The piston rod straightening device according to any one of claims 1 to 4, characterized in that: The pressing mechanism (2) installs a motor (7) on one of the pressing units (5), and the pressing unit (5) constitutes an active unit; The two pressure rollers (6) of the active unit are connected in transmission via gears; The motor (7) drives one of the pressing rollers (6) of the active unit to rotate, thereby driving the other pressing roller (6) of the active unit to rotate synchronously in the same direction.

6. The piston rod straightening device according to any one of claims 1 to 4, characterized in that: The pressure roller (6) is rotationally connected to the second wheel frame via a bearing.

7. The piston rod straightening device according to any one of claims 1 to 4, characterized in that: Also included: a positioning mechanism; The positioning mechanism comprises: a limiting member (15) located at the right end of the support mechanism (1), and a positioning unit located at the left end of the support mechanism (1) for pushing the piston rod to the right.

8. The piston rod straightening device according to claim 7, characterized in that: The positioning unit comprises: a positioning member (16) and a first power source (17) for driving the positioning member (16) to move in the left-right direction.

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