Positioning and pressing mechanism for precise metal piece

Abstract

The utility model discloses a positioning hold-down mechanism for a precise metal piece, which is used for picking up a cover plate and comprises a horizontally arranged support plate, an opening and closing cylinder and a rotating plate, the opening and closing cylinder and the rotating plate are mounted on the lower surface of the support plate, a clamping component is mounted on the rotating plate, and a to-be-clamped piece matched with the clamping component is mounted on the cover plate. At least one jacking air cylinder is arranged below the supporting plate, a guide support is installed on the upper surface of the supporting plate, the front side plate and the rear side plate are each provided with a guide groove allowing a pin shaft to be embedded therein, each guide groove comprises a first guide part extending in the vertical direction and a second guide part extending in an inclined mode, and a strip-shaped hole allowing the pin shaft to penetrate through is formed in the push block. While the cover plate is automatically picked up and put down, the position accuracy of the cover plate in the repeated picking and putting process can be guaranteed, pushing damage to a workpiece in the opening and closing process of the cover plate can be avoided, interference of a rotating structure to the milling process of the workpiece can be avoided, and one-time continuous machining on the periphery of the workpiece is facilitated.

Description

Technical Field

[0001] The utility model relates to a positioning and pressing mechanism for precision metal parts, belonging to the field of 3C processing. Background Art

[0002] The processing fixture is an indispensable part in CNC processing. Among them, the cover plate of the processing fixture needs to be repeatedly picked up and put down to install and unload the workpiece. In the existing processing fixture during the processing, the cover plate for positioning the product needs to be repeatedly picked up and put down, but it is difficult to ensure the position accuracy of the cover plate during repeated picking and placing, and it is easy to push the workpiece during the opening and closing process, causing damage to the workpiece. Summary of the Utility Model

[0003] The purpose of the utility model is to provide a positioning and pressing mechanism for precision metal parts. While the positioning and pressing mechanism for precision metal parts realizes automatic picking up and putting down of the cover plate, it can not only ensure the position accuracy of the cover plate during repeated picking and placing, but also avoid the pushing damage to the workpiece during the opening and closing process of the cover plate.

[0004] To achieve the above purpose, the technical solution adopted by the utility model is: a positioning and pressing mechanism for precision metal parts for picking up the cover plate, including: a horizontally arranged support plate, an opening and closing cylinder and a rotating plate installed on the lower surface of the support plate. A clamping component is installed on the rotating plate, and a piece to be clamped cooperating with the clamping component is installed on the cover plate. The upper end of the piston rod of the opening and closing cylinder is installed with a pushing block. A support seat is installed on the upper surface of the support plate and on the right side of the piston rod of the opening and closing cylinder. One end of a rotating plate is rotatably connected with the pushing block through a pin shaft. The other end of the rotating plate extends to the right and is installed with the clamping component. The upper end of the support seat is rotatably installed with a connecting rod. The other end of the connecting rod with one end connected to the support seat is connected to the rotating plate. When the piston rod of the opening and closing cylinder is in the extended state, the rotating plate is in a horizontal state and the connecting rod is in a vertical state, and the clamping component is located above the piece to be clamped on the cover plate;

[0005] At least one lifting cylinder is arranged below the support plate. The piston rod of the lifting cylinder is connected to the lower surface of the support plate, so that the support plate can move in the vertical direction. A guiding support is installed on the upper surface of the support plate. The front side plate and the rear side plate of the guiding support are respectively located on both sides of the rotating plate. A guiding groove for the pin shaft to be embedded is formed on each of the front side plate and the rear side plate. The guiding groove includes a first guiding portion extending in the vertical direction and a second guiding portion extending obliquely. The lower end of the second guiding portion connected to the lower end of the first guiding portion extends to the right. A strip-shaped hole for the pin shaft to pass through is formed on the pushing block. When the piston rod of the opening and closing cylinder is in the extended state, the pin shaft is located at the left end of the strip-shaped hole extending horizontally. When the piston rod of the lifting cylinder is in the extended state and the piston rod of the opening and closing cylinder is in the retracted state, the pin shaft moving to the lower end of the second guiding portion of the guiding groove is located at the right end of the strip-shaped hole.

[0006] The further improved solutions in the above technical solutions are as follows:

[0007] 1. In the above solution, the two lifting cylinders are respectively arranged below the front and rear ends of the support plate.

[0008] 2. In the above solution, a left side plate is installed on the left side of the piston rod of the opening and closing cylinder where the guiding support is located. The left side plate is arranged lower than the front side plate and the rear side plate, so that the left side plate and the front side plate and the rear side plate form a "concave" shape, thereby forming an avoidance groove.

[0009] 3. In the above solution, a mounting hole is formed at the left end of the rotating plate. The pushing block is embedded in the mounting hole and is rotatably connected to the inner wall of the mounting hole.

[0010] 4. In the above solution, the surfaces of the support seat and the rotating plate close to the pushing block are both set to be arc-shaped.

[0011] Due to the application of the above technical solutions, the utility model has the following advantages compared with the prior art:

[0012] The positioning and pressing mechanism for precision metal parts of the present utility model has the other end of the rotating plate extending rightward and mounting the clamping assembly. A connecting rod is rotatably mounted on the upper end of the support base. The other end of the connecting rod connected to one end of the support base is connected to the rotating plate. When the piston rod of the opening and closing cylinder is in the extended state, the rotating plate is in the horizontal state and the connecting rod is in the vertical state. The clamping assembly is located above the workpiece to be clamped on the cover plate. At least one lifting cylinder is arranged below the support plate. The piston rod of the lifting cylinder is connected to the lower surface of the support plate, so that the support plate can move in the vertical direction. A guiding support is mounted on the upper surface of the support plate. The front side plate and the rear side plate of the guiding support are respectively located on both sides of the rotating plate. A guiding groove for the pin shaft to be embedded is opened on both the front side plate and the rear side plate. The guiding groove includes a first guiding part extending in the vertical direction and a second guiding part extending obliquely. The lower end of the second guiding part connected to the lower end of the first guiding part extends rightward. A strip-shaped hole for the pin shaft to pass through is opened on the push block. When the piston rod of the opening and closing cylinder is in the extended state, the pin shaft is located at the left end of the strip-shaped hole extending horizontally. When the piston rod of the lifting cylinder is in the extended state and the piston rod of the opening and closing cylinder is in the contracted state, the pin shaft moving to the lower end of the second guiding part of the guiding groove is located at the right end of the strip-shaped hole. While realizing the automatic picking up and putting down of the cover plate, it can not only ensure the position accuracy of the cover plate during the long-term repeated picking up and putting down of the cover plate for many times, so as to ensure the stability of pressing the workpiece, but also avoid the pushing damage to the workpiece during the opening and closing of the cover plate, and also avoid the interference of the rotating structure to the whole processing process, especially to the milling process of the workpiece, which is convenient for the one-time continuous processing around the workpiece, and improves the processing efficiency, convenience and consistency. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] FIG Figure 1 is a schematic structural view of the positioning and pressing mechanism for precision metal parts of the present utility model;

[0014] FIG Figure 2 is a partial structural view of the positioning and pressing mechanism for precision metal parts of the present utility model;

[0015] FIG Figure 3 is a cross-sectional view of FIG Figure 2 ;

[0016] FIG Figure 4 is a schematic view of the open state of the cover plate of the positioning and pressing mechanism for precision metal parts of the present utility model.

[0017] In the above drawings: 100, cover plate; 101, workpiece to be clamped; 200, clamping assembly; 1, support plate; 2, lifting cylinder; 3, opening and closing cylinder; 4, piston rod; 5, pushing block; 6, support seat; 7, rotating plate; 8, pin shaft; 9, connecting rod; 10, guiding support; 11, front side plate; 12, rear side plate; 13, guiding groove; 131, first guiding portion; 132, second guiding portion; 14, strip-shaped hole; 15, left side plate; 16, avoiding position groove; 17, mounting hole. Detailed implementation manners

[0018] The present patent can be further clearly understood through the following specific embodiments, but they do not limit the present patent.

[0019] Embodiment 1: A positioning and pressing mechanism for precision metal parts, used for picking up the cover plate 100, comprising: a horizontally arranged support plate 1, an opening and closing cylinder 3 and a rotating plate 7 installed on the lower surface of the support plate 1. A clamping assembly 200 is installed on the rotating plate 7. A workpiece to be clamped 101 cooperating with the clamping assembly 200 is installed on the cover plate 100. A pushing block 5 is installed at the upper end of the piston rod 4 of the opening and closing cylinder 3. A support seat 6 is installed on the upper surface of the support plate 1 and on the right side of the piston rod 4 of the opening and closing cylinder 3. One end of a rotating plate 7 is rotatably connected to the pushing block 5 through a pin shaft 8. The other end of the rotating plate 7 extends to the right and is installed with the clamping assembly 200. The upper end of the support seat 6 is rotatably installed with a connecting rod 9. The other end of the connecting rod 9 connected to the support seat 6 is connected to the rotating plate 7. When the piston rod 4 of the opening and closing cylinder 3 is in the extended state, the rotating plate 7 is in the horizontal state and the connecting rod 9 is in the vertical state, and the clamping assembly 200 is located above the workpiece to be clamped 101 on the cover plate 100;

[0020] Below the said support plate 1, there is at least one lifting cylinder 2. The piston rod of the lifting cylinder 2 is connected to the lower surface of the support plate 1, so that the support plate 1 can move in the vertical direction. On the upper surface of the support plate 1, a guiding support 10 is installed. The front side plate 11 and the rear side plate 12 of the guiding support 10 are respectively located on both sides of the rotating plate 7. On both the front side plate 11 and the rear side plate 12, there is a guiding groove 13 for the pin shaft 8 to be embedded. The guiding groove 13 includes a first guiding part 131 extending in the vertical direction and a second guiding part 132 extending obliquely. The lower end of the second guiding part 132, whose upper end is connected to the lower end of the first guiding part 131, extends to the right. On the pushing block 5, there is a strip-shaped hole 14 for the pin shaft 8 to pass through. When the piston rod 4 of the opening and closing cylinder 3 is in the extended state, the pin shaft 8 is located at the left end of the strip-shaped hole 14 extending horizontally. When the piston rod of the lifting cylinder 2 is in the extended state and the piston rod 4 of the opening and closing cylinder 3 is in the retracted state, the pin shaft 8 that has moved to the lower end of the second guiding part 132 of the guiding groove 13 is located at the right end of the strip-shaped hole 14;

[0021] When taking the cover plate, the support plate is driven by the lifting cylinder to move up to a high position, and then the pushing block is driven by the opening and closing cylinder to move up to a high position, so that the rotating plate that rotates as the pushing block moves up rotates to the horizontal. The clamping assembly installed on the rotating plate rotates to above the parts to be clamped on the cover plate accordingly; at this time, the connecting rod rotates to the vertical state, and the pin shaft moves to the upper end of the first guiding part of the guiding groove and the end of the strip-shaped hole on the pushing block away from the carrier plate;

[0022] Then, the support plate is driven by the lifting cylinder to move down, and the opening and closing cylinder, the rotating plate and the clamping assembly all move down accordingly. Then, through the clamping cooperation between the clamping assembly and the parts to be clamped, stable clamping of the whole cover plate is realized. Here, the clamping assembly and the parts to be clamped do not belong to the inventive point of this patent. Specifically, they can be obtained through outsourcing, or the solution in the applicant's previous application (application number 2024102325213) can be adopted, which will not be elaborated here.

[0023] Two such lifting cylinders 2 are respectively arranged below the front and rear ends of the support plate 1.

[0024] On the left side of the piston rod 4 of the opening and closing cylinder 3, a left side plate 15 is installed on the said guiding support 10. The left side plate 15 is set lower than the front side plate 11 and the rear side plate 12, so that the left side plate 15 and the front side plate 11 and the rear side plate 12 form a "concave" shape, thus forming an avoidance groove 16.

[0025] On the left end of the said rotating plate 7, an installation hole 17 is opened. The pushing block 5 is embedded in the installation hole 17 and is rotatably connected to the inner wall of the installation hole 17.

[0026] Embodiment 2: A positioning and pressing mechanism for precision metal parts, used for picking up the cover plate 100, comprising: a horizontally arranged support plate 1, an opening and closing cylinder 3 and a rotating plate 7 installed on the lower surface of the support plate 1. A clamping assembly 200 is installed on the rotating plate 7. A workpiece to be clamped 101 is installed on the cover plate 100 and cooperates with the clamping assembly 200. The upper end of the piston rod 4 of the opening and closing cylinder 3 is installed with a push block 5. A support seat 6 is installed on the upper surface of the support plate 1 and on the right side of the piston rod 4 of the opening and closing cylinder 3. One end of the rotating plate 7 is rotatably connected to the push block 5 through a pin shaft 8. The other end of the rotating plate 7 extends to the right and is installed with the clamping assembly 200. The upper end of the support seat 6 is rotatably installed with a connecting rod 9. The other end of the connecting rod 9 with one end connected to the support seat 6 is connected to the rotating plate 7. When the piston rod 4 of the opening and closing cylinder 3 is in the extended state, the rotating plate 7 is in a horizontal state and the connecting rod 9 is in a vertical state, and the clamping assembly 200 is located above the workpiece to be clamped 101 on the cover plate 100;

[0027] At least one lifting cylinder 2 is arranged below the support plate 1. The piston rod of the lifting cylinder 2 is connected to the lower surface of the support plate 1, so that the support plate 1 can move in the vertical direction. A guiding support 10 is installed on the upper surface of the support plate 1. The front side plate 11 and the rear side plate 12 of the guiding support 10 are respectively located on both sides of the rotating plate 7. A guiding groove 13 for the pin shaft 8 to be embedded is opened on both the front side plate 11 and the rear side plate 12. The guiding groove 13 includes a first guiding part 131 extending in the vertical direction and a second guiding part 132 extending obliquely. The lower end of the second guiding part 132 connected to the upper end of the first guiding part 131 extends to the right. A strip-shaped hole 14 for the pin shaft 8 to pass through is opened on the push block 5. When the piston rod 4 of the opening and closing cylinder 3 is in the extended state, the pin shaft 8 is located at the left end of the strip-shaped hole 14 extending horizontally. When the piston rod of the lifting cylinder 2 is in the extended state and the piston rod 4 of the opening and closing cylinder 3 is in the contracted state, the pin shaft 8 moving to the lower end of the second guiding part 132 of the guiding groove 13 is located at the right end of the strip-shaped hole 14;

[0028] The lifting cylinder drives the support plate to move up to a high position. The opening and closing cylinder, the rotating plate, the clamping assembly and the cover plate clamped by the clamped assembly all move up accordingly, so that the cover plate disengages from the machine table and vertically moves away;

[0029] Next, the pushing block is driven by the opening and closing cylinder to move downward to the low position. During this process, the pin shaft first moves vertically downward along the first guiding portion of the guiding groove. The rotating plate rotatably connected to the pushing block by the pin shaft rotates from the horizontal position to the vertical (90°) position accordingly. At the same time, the clamped cover plate is also driven to rotate from the horizontal position to the vertical position. Under the action of the downward pulling force of the pushing block, the pin shaft continues to move downward and enters into the second guiding portion of the guiding groove, and moves along the inclined second guiding portion to the lower end of the second guiding portion. During this process, the pin shaft also moves from one end close to the carrier plate to the other end in the strip-shaped hole on the pushing block. The rotating plate also continues to rotate outward along with the movement of the pin shaft, and the cover plate also continues to rotate outward to the 110° position.

[0030] Two of the above-mentioned jacking cylinders 2 are respectively arranged below the front and rear ends of the support plate 1.

[0031] A left side plate 15 is installed on the left side of the piston rod 4 of the opening and closing cylinder 3 on the above-mentioned guiding support 10. The left side plate 15 is arranged lower than the front side plate 11 and the rear side plate 12, so that the left side plate 15 and the front side plate 11 and the rear side plate 12 form a "concave" shape, thereby forming an avoidance groove 16.

[0032] The surfaces of the above-mentioned support seat 6 and the rotating plate 7 close to the pushing block 5 are both arranged in an arc shape.

[0033] The working principle of the present utility model is as follows:

[0034] When taking the cover plate, the support plate is driven by the jacking cylinder to move upward to the high position. Then, the pushing block is driven by the opening and closing cylinder to move upward to the high position, so that the rotating plate that rotates along with the upward movement of the pushing block rotates to the horizontal position, and the clamping assembly installed on the rotating plate rotates to above the clamping member on the cover plate accordingly. At this time, the connecting rod rotates to the vertical state, and the pin shaft moves to the upper end of the first guiding portion of the guiding groove and the end of the strip-shaped hole on the pushing block far from the carrier plate.

[0035] Then, the support plate is driven by the jacking cylinder to move downward. The opening and closing cylinder, the rotating plate, and the clamping assembly all move downward accordingly. Then, through the clamping cooperation between the clamping assembly and the clamping member, the stable clamping of the whole cover plate is realized. Here, the clamping assembly and the clamping member do not belong to the inventive point of this patent. Specifically, they can be obtained by outsourcing, or the solution in the applicant's previous application (application number 2024102325213) can be adopted, which will not be elaborated here.

[0036] Once again, the support plate is driven by the jacking cylinder to move upward to the high position. The opening and closing cylinder, the rotating plate, the clamping assembly, and the cover plate clamped by the clamping assembly all move upward accordingly, so that the cover plate is separated from the machine table and vertically moves away.

[0037] Next, the push block is driven by the opening and closing cylinder to move downward to the low position. During this process, the pin shaft first moves vertically downward along the first guiding portion of the guiding groove. The rotating plate rotatably connected to the push block by the pin shaft rotates from the horizontal position to the vertical (90°) position accordingly, and at the same time, the clamped cover plate is also driven to rotate from the horizontal position to the vertical position; under the action of the downward pulling force of the push block, the pin shaft continues to move downward into the second guiding portion of the guiding groove and moves along the inclined second guiding portion to the lower end of the second guiding portion. During this process, the pin shaft also moves from one end close to the carrier plate to the other end in the strip-shaped hole of the push block, and the rotating plate continues to rotate outward along with the movement of the pin shaft, and the cover plate also continues to rotate outward to the 110° position accordingly;

[0038] When placing the cover plate, the piston rod of the lifting cylinder is placed in the extended state, and at the same time, the opening and closing cylinder drives the push block to move upward to the high position, so that the rotating plate that rotates as the push block moves upward and the cover plate clamped by the clamping assembly on the rotating plate both rotate from the 110° position to the 90° position and then to the horizontal position;

[0039] The supporting plate is driven to move downward by the lifting cylinder, and the opening and closing cylinder, the rotating plate, the clamping assembly, and the cover plate clamped by the clamping assembly on the rotating plate all move downward accordingly until the cover plate contacts the upper surface of the workpiece to be processed;

[0040] After that, the clamping assembly releases the workpiece to be clamped, and the supporting plate is driven to move upward to the high position again by the lifting cylinder. The opening and closing cylinder, the rotating plate, and the clamping assembly all move upward to disengage from the cover plate. Then, the opening and closing cylinder drives the push block to move downward to the low position. During this process, the rotating plate rotates and opens from the horizontal position to the 110° position again, so as to move away from the workpiece to be processed, facilitating the CNC tool to perform one-time processing on the periphery of the workpiece to be processed, and improving the processing efficiency and convenience.

[0041] When adopting the above positioning and pressing mechanism for precision metal parts, while realizing the automatic picking and placing of the cover plate, it can not only ensure the position accuracy of the cover plate during the long-term repeated picking and placing process of the cover plate, thus ensuring the stability of the pressing of the workpiece, but also avoid the pushing damage to the workpiece during the opening and closing process of the cover plate, and also avoid the interference of the rotating structure to the whole processing process, especially to the milling process of the workpiece, facilitating the one-time continuous processing of the periphery of the workpiece, and improving the processing efficiency, convenience and consistency.

[0042] The above embodiments are only used to illustrate the technical concept and characteristics of the present invention, and their purpose is to enable those who are familiar with this technology to understand the content of the present invention and implement it accordingly, and should not be used to limit the protection scope of the present invention. All equivalent changes or modifications made according to the spirit of the present invention should be covered within the protection scope of the present invention.

Claims

1. A positioning and pressing mechanism for precision metal parts, used for picking up a cover plate (100), comprising: A horizontally arranged support plate (1), a opening and closing air cylinder (3) and a rotating plate (7) installed on the lower surface of the support plate (1). A clamping assembly (200) is installed on the rotating plate (7), and a workpiece to be clamped (101) cooperating with the clamping assembly (200) is installed on the cover plate (100). It is characterized in that: a push block (5) is installed at the upper end of the piston rod (4) of the opening and closing air cylinder (3), and a support seat (6) is installed on the upper surface of the support plate (1) and on the right side of the piston rod (4) of the opening and closing air cylinder (3). One end of a rotating plate (7) is rotatably connected to the push block (5) through a pin shaft (8), the other end of the rotating plate (7) extends to the right and the clamping assembly (200) is installed thereon. The upper end of the support seat (6) is rotatably installed with a connecting rod (9), and the other end of the connecting rod (9) with one end connected to the support seat (6) is connected to the rotating plate (7). When the piston rod (4) of the opening and closing air cylinder (3) is in the extended state, the rotating plate (7) is in the horizontal state and the connecting rod (9) is in the vertical state, and the clamping assembly (200) is located above the workpiece to be clamped (101) on the cover plate (100). At least one lifting air cylinder (2) is arranged below the support plate (1), and the piston rod of the lifting air cylinder (2) is connected to the lower surface of the support plate (1), so that the support plate (1) can move in the vertical direction. A guiding support (10) is installed on the upper surface of the support plate (1). The front side plate (11) and the rear side plate (12) of the guiding support (10) are respectively located on both sides of the rotating plate (7). A guiding groove (13) for the pin shaft (8) to be embedded is opened on both the front side plate (11) and the rear side plate (12). The guiding groove (13) includes a first guiding portion (131) extending in the vertical direction and a second guiding portion (132) extending obliquely. The lower end of the second guiding portion (132) connected to the lower end of the first guiding portion (131) extends to the right. A strip-shaped hole (14) for the pin shaft (8) to pass through is opened on the push block (5). When the piston rod (4) of the opening and closing air cylinder (3) is in the extended state, the pin shaft (8) is located at the left end of the strip-shaped hole (14) extending horizontally. When the piston rod of the lifting air cylinder (2) is in the extended state and the piston rod (4) of the opening and closing air cylinder (3) is in the contracted state, the pin shaft (8) moving to the lower end of the second guiding portion (132) of the guiding groove (13) is located at the right end of the strip-shaped hole (14).

2. The positioning and pressing mechanism for precision metal parts according to claim 1, wherein: The 2 lifting air cylinders (2) are respectively arranged below the front and rear ends of the support plate (1).

3. The positioning and pressing mechanism for precision metal parts according to claim 1, characterized in that: A left side plate (15) is installed on the guiding support (10) on the left side of the piston rod (4) of the opening and closing air cylinder (3). The left side plate (15) is arranged lower than the front side plate (11) and the rear side plate (12), so that the left side plate (15) and the front side plate (11), the rear side plate (12) form a "concave" shape, thereby forming an avoidance groove (16).

4. The positioning and pressing mechanism of the precision metal part according to claim 1, characterized in that: A mounting hole (17) is formed at the left end of the rotating plate (7), and the pushing block (5) is embedded in the mounting hole (17) and is rotatably connected to the inner wall of the mounting hole (17).

5. The positioning and pressing mechanism for precision metal parts according to claim 1, characterized in that: The surfaces of the support base (6) and the rotating plate (7) close to the pushing block (5) are both arc-shaped.

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