Arc piece vacuum adsorption tooling

Abstract

The present application relates to the technical field of petroleum equipment, and discloses an arc piece vacuum adsorption tool, which comprises a seat body and a vacuum generator, the seat body is provided with an adsorption station, the adsorption station comprises an inner sealing ring, an outer sealing ring and a plurality of notches, the notches are located between the inner sealing ring and the outer sealing ring, the vacuum generator is connected with the notches in communication, and the seat body is provided with a positioning part.The present application has the following advantages and effects: the present application is positioned by rolling balls of the positioning seat tightly pressing against the inner wall of the center hole of the arc piece, and the arc piece is adsorbed and fixed in a vacuum adsorption mode, so that the deformation and damage of the arc piece caused by conventional pressing and clamping are avoided.The present application is unique in that a first channel and a second channel are formed in the first thimble of the machine tool, the first thimble is pressed in the first positioning hole of the seat body, the first channel and the first positioning hole are connected and sealed, and the seat body can rotate as required without being limited by the wrapping of the air pipe.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of petroleum equipment, in particular to an arc piece vacuum adsorption tool. BACKGROUND

[0002] The plug valve is a kind of valve commonly used in the petroleum industry, and the sealing arc piece in the plug valve is a precision component that directly affects the sealing performance of the valve. The Chinese utility model patent with the authorization announcement number CN217619707U discloses a sealing arc piece precision machining device, which clamps the sealing arc piece by using mechanical components such as fastening rings and supporting rings. The Chinese utility model patent with the authorization announcement number CN217394676U discloses a plug valve arc piece machining tool, which includes a device one for positioning the sealing arc piece and a device two for machining the sealing arc piece, and the device one includes a cylindrical cylindrical positioning body.

[0003] In the prior art, the clamping technology for the sealing arc piece of the plug valve mostly uses mechanical structures for compression and fixation. However, the sealing arc piece itself is relatively thin, and its inner arc surface and outer arc surface are not concentric, that is, the sealing arc piece is not of equal wall thickness. Therefore, compression and fixation can easily cause deformation and damage to the sealing arc piece, resulting in reduced sealing performance of the plug valve. SUMMARY

[0004] The purpose of the present application is to provide an arc piece vacuum adsorption tool that can fix the arc piece without damaging it.

[0005] The above technical purpose of the present application is achieved by the following technical solution: an arc piece vacuum adsorption tool, comprising a seat body and a vacuum generator, the seat body is provided with an adsorption station, the adsorption station comprises an inner sealing ring, an outer sealing ring and a plurality of notches, the notches are located between the inner sealing ring and the outer sealing ring, the vacuum generator is in communication with the notches, and the seat body is provided with a positioning part for inserting the center hole of the arc piece.

[0006] By adopting the above technical solution, the arc piece is placed at the adsorption station, the positioning part is inserted into the center hole of the arc piece, the vacuum generator is started, and the vacuum generator forms a vacuum in the space between the notches, the inner sealing ring, the outer sealing ring and the arc piece. The arc piece is adsorbed and fixed at the adsorption station. At this time, the arc piece can be processed by precision grinding and other processing methods. The arc piece will not be deformed and damaged when fixed, and the yield rate during the production process of the arc piece is improved.

[0007] The further arrangement of the present application is that the positioning part comprises a positioning base fixed to the seat body, a plurality of sliding holes opened in the side wall of the positioning base, a middle hole opened in the positioning base, a plurality of balls arranged in the sliding holes, a guide base inserted into the middle hole, and a spring arranged between the guide base and the seat body; the inner ends of the sliding holes are communicated with the middle hole, and the outer ends are located on the side wall of the positioning base; the guide base is provided with a guide surface, and the guide base pushes the balls to move towards the outer ends of the sliding holes through the guide surface under the action of the spring force, and the outer end diameter of the sliding hole is smaller than the diameter of the ball.

[0008] By adopting the above technical scheme, when the arc piece is put into the adsorption station, the inner wall of the center hole of the arc piece first contacts and presses the ball into the sliding hole, the spring force is transmitted to the ball through the guide base, and the ball is driven to abut against the inner wall of the center hole of the arc piece, so that the position of the arc piece is fixed.

[0009] The further arrangement of the present application is that a cavity is formed in the seat body, the positioning base is located in the inner sealing ring, and the spring is located in the cavity.

[0010] By adopting the above technical scheme, the cavity provides a containing space for the spring.

[0011] The further arrangement of the present application is that the guide base comprises a guide part, a rod part fixed to the guide part, and a disc part fixed to the rod part, the guide surface is a circular truncated cone surface opened in the side wall of the guide part, the spring is sleeved on the rod part, one end of the spring abuts against the disc part, and the other end abuts against the inner wall of the cavity.

[0012] By adopting the above technical scheme, the spring force makes the guide base have a tendency to move towards the cavity, so that the guide base is prevented from being separated from the seat body.

[0013] The further arrangement of the present application is that the first needle is provided with a first channel and a second channel, the seat body is provided with a first positioning hole, the first needle is inserted into the first positioning hole, the first positioning hole is communicated with a second air pipe, and the second air pipe is communicated with the slot.

[0014] By adopting the above technical scheme, the first needle is installed on the machine tool, the first channel and the second channel are creatively arranged in the first needle, the seat body is pressed, rotated and moved through the first needle, the arc piece is conveniently machined, and the problem that the air pipe is wound in the rotating process of the seat body is avoided when the vacuum generator is directly communicated with the slot through the air pipe.

[0015] The seat body is internally formed with cavities, and the second air pipes are located in the cavities.

[0016] The first air pipe is provided with a throttle valve.

[0017] The seat body is provided with a second positioning hole, the second positioning hole is used for inserting the second thimble, and the first positioning hole and the second positioning hole are distributed at two ends of the seat body.

[0018] By adopting the above technical scheme, the second thimble is also installed on the machine tool, and cooperates with the first thimble to fix the seat body.

[0019] The number of the adsorption stations and the positioning parts is several.

[0020] By adopting the above technical scheme, several arc pieces can be adsorbed and fixed at the same time, and machining is facilitated.

[0021] The beneficial effects of the present application are:

[0022] 1. The present application positions the arc piece by the ball of the positioning seat abutting against the inner wall of the center hole of the arc piece, and adsorbs and fixes the arc piece by the vacuum adsorption mode, thereby avoiding the deformation and damage of the arc piece caused by the conventional pressing and clamping.

[0023] 2. The present application creatively provides the first channel and the second channel at the first thimble of the machine tool, the first thimble is pressed in the first positioning hole of the seat body, the first channel and the first positioning hole are connected and sealed, and the seat body can be rotated as needed without being limited by the air pipe winding.

[0024] 3. The present application has high adsorption and positioning efficiency for the arc piece, the arc piece is not easy to be damaged, and the yield can be effectively improved. The scheme of the present application can be applied not only to the arc piece, but also to the adsorption and positioning of other types of arc-shaped thin-walled parts. BRIEF DESCRIPTION OF DRAWINGS

[0025] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed in the embodiment description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0026] Figure 1 is a schematic view of the position relationship of the seat body of the present application installed on the machine tool.

[0027] Figure 2 is a structural schematic view of the present application.

[0028] Figure 3 is the schematic diagram of the structural relationship between the first channel, the second channel, the first needle and the first air pipe of the application.

[0029] Figure 4 is the schematic diagram of the positional relationship between the seat body and the first positioning hole.

[0030] Figure 5 is the schematic diagram of the positional relationship between the seat body and the second positioning hole.

[0031] Figure 6 is the schematic diagram of the seat body in the exploded state.

[0032] Figure 7 is the schematic diagram of the positioning part structure.

[0033] Figure 8 is the schematic diagram of the arc piece structure.

[0034] In the figure, 1 is the seat body; 11 is the first positioning hole; 12 is the second positioning hole; 13 is the cavity; 2 is the vacuum generator; 3 is the adsorption station; 31 is the inner sealing ring; 32 is the outer sealing ring; 33 is the notch; 4 is the positioning part; 41 is the positioning seat; 411 is the sliding hole; 412 is the middle hole; 42 is the ball; 43 is the guide seat; 431 is the guide part; 432 is the rod part; 433 is the disc part; 44 is the spring; 45 is the guide surface; 5 is the first needle; 51 is the first channel; 52 is the second channel; 6 is the first air pipe; 61 is the throttle valve; 7 is the second air pipe; 8 is the machine tool; 9 is the arc piece; 91 is the center hole. DETAILED DESCRIPTION

[0035] The technical solutions of the application will be described clearly and completely below in combination with specific embodiments. Obviously, the described embodiments are only some of the embodiments of the application, but not all the embodiments. Based on the embodiments of the application, all the other embodiments obtained by those skilled in the art without any creative work fall within the protection scope of the application.

[0036] A kind of arc piece vacuum adsorption work, such as Figures 1 to 8As shown, including the seat body 1, vacuum generator 2, first needle 5, second needle, the seat body 1 both ends are provided with first positioning hole 11, second positioning hole 12, first needle 5, second needle are installed on machine tool 8, first needle 5 is inserted into first positioning hole 11, second needle is inserted into second positioning hole 12, both will seat body 1 be pressed tightly. The side wall of first needle 5 is provided with first channel 51, and the tip is provided with second channel 52, and first channel 51 is communicated with second channel 52. The vacuum generator 2 is connected with first air pipe 6, and first air pipe 6 is communicated with first channel 51, and first air pipe 6 is further provided with throttle valve 61.

[0037] The cavity 13 is arranged in the seat body 1, and the first positioning hole 11 is connected with the second air pipe 7, and the number of the second air pipe 7 is four. The outer wall of the seat body 1 is provided with two adsorption stations 3, and the adsorption station 3 includes a plurality of notches 33, an inner sealing ring 31 and an outer sealing ring 32, and the four second air pipes 7 are communicated with the notches 33 of the two adsorption stations 3 respectively.

[0038] Each adsorption station 3 further includes a positioning part 4, and the positioning part 4 includes a positioning seat 41 fixed on the seat body 1, two sliding holes 411 arranged on the side wall of the positioning seat 41, a middle hole 412 penetrating the positioning seat 41, four ball bearings 42, a guide seat 43 slidingly inserted into the middle hole 412 and a spring 44, the positioning seat 41 is located in the middle of the inner sealing ring 31, two ball bearings 42 are arranged in each sliding hole 411, the inner end of the sliding hole 411 is communicated with the middle hole 412, and the outer end is located on the side wall of the positioning seat 41, two ball bearings 42 are arranged in each sliding hole 411, and the outer end opening diameter of the ball bearing 42 is greater than the diameter of the sliding hole 411, so that the ball bearing 42 can protrude part in the sliding hole 411 and will not be separated from the outer end of the sliding hole 411. The guide seat 43 includes a guide part 431, a rod part 432 fixed on the guide part 431 and a disc part 433 fixed on the rod part 432. A guide surface 45 is arranged on the side wall of the guide part 431, the guide surface 45 is in the shape of a circular truncated side, and the guide surface 45 abuts against the ball bearing 42. The spring 44 is located in the cavity 13, the spring 44 is sleeved on the rod part 432, one end abuts against the inner wall of the cavity 13, and the other end abuts against the disc part 433. The spring 44 exerts a force on the guide seat 43, and the guide surface 45 of the guide seat 43 extrudes the ball bearing 42 to move towards the outer end of the sliding hole 411.

[0039] Working principle: the arc piece 9 is placed on the adsorption station 3, the positioning seat 41 is inserted into the center hole 91 of the arc piece 9, the inner wall of the center hole 91 contacts and presses the ball 42 into the sliding hole 411, the spring 44 is pressed to the ball 42 through the guide seat 43, and the arc surface position is positioned through the ball 42. Then start the vacuum generator 2, the vacuum generator 2 forms a vacuum between the slot 33, the inner sealing ring 31, the outer sealing ring 32 and the arc piece 9 through the first air pipe 6, the first channel 51, the second channel 52, the first positioning hole 11 and the second air pipe 7, and the arc piece 9 is adsorbed and fixed on the adsorption station 3. At this time, the arc piece 9 can be finely ground and processed.

Claims

1. A vacuum adsorption tool for arc sheets, characterized by: The invention comprises a base body (1) and a vacuum generator (2), wherein the base body (1) is provided with an adsorption station (3), wherein the adsorption station (3) comprises an inner sealing ring (31), an outer sealing ring (32), and a plurality of notches (33), wherein the notches (33) are located between the inner sealing ring (31) and the outer sealing ring (32), and the vacuum generator (2) is connected to the notches (33), and the base body (1) is provided with a positioning portion (4), wherein the positioning portion (4) is used for plugging into the center hole (91) of the arc piece (9); the positioning portion (4) comprises a positioning seat (41) fixed to the base body (1), a plurality of sliding holes (411) opened on the side wall of the positioning seat (41), and a plurality of sliding holes (411) opened on the side wall of the positioning seat. (41), a plurality of balls (42) arranged in the sliding hole (411), a guide seat (43) inserted into the central hole (412), and a spring (44) arranged between the guide seat (43) and the seat body (1); the inner ends of the sliding holes (411) are connected to the central hole (412), and the outer ends are located on the side walls of the positioning seat (41); the guide seat (43) is provided with a guide surface (45), and after the guide seat (43) is subjected to the force of the spring (44), it pushes the balls (42) to move toward the outer end of the sliding hole (411) through the guide surface (45), and the diameter of the outer end of the sliding hole (411) is smaller than the diameter of the balls (42).

2. The arc sheet vacuum adsorption tool according to claim 1, characterized in that: A cavity (13) is formed inside the seat body (1), the positioning seat (41) is located inside the inner sealing ring (31), and the spring (44) is located inside the cavity (13).

3. The arc sheet vacuum adsorption tool according to claim 2, characterized in that: The guide seat (43) includes a guide portion (431), a rod portion (432) fixed to the guide portion (431), and a disk portion (433) fixed to the rod portion (432). The guide surface (45) is a frustum formed on a side wall of the guide portion (431). The spring (44) is sleeved on the rod portion (432). One end of the spring (44) abuts against the disk portion (433), and the other end abuts against the inner wall of the cavity (13).

4. The arc sheet vacuum adsorption tool according to any one of claims 1 to 3, characterized in that: The invention also includes a first ejector pin (5), wherein a first channel (51) is provided on a side wall of the first ejector pin (5), and a second channel (52) is provided at a tip thereof and is connected to the first channel (51); the vacuum generator (2) is connected to the first channel (51) via a first air pipe (6); the seat body (1) is provided with a first positioning hole (11), the first positioning hole (11) is for the first ejector pin (5) to be inserted, the first positioning hole (11) is connected to a second air pipe (7), and the second air pipe (7) is connected to the notch (33).

5. The arc sheet vacuum adsorption tool according to claim 4, characterized in that: A cavity (13) is formed inside the seat body (1), and the second air pipe (7) is located in the cavity (13). There are a plurality of second air pipes (7).

6. The arc sheet vacuum adsorption tool according to claim 4, characterized in that: The first air pipe (6) is equipped with a throttle valve (61).

7. The arc sheet vacuum adsorption tool according to claim 4, characterized in that: It also includes a second ejector pin. The base body (1) is provided with a second positioning hole (12). The second positioning hole (12) is for the second ejector pin to be inserted. The first positioning hole (11) and the second positioning hole (12) are distributed at both ends of the base body (1).

8. The arc sheet vacuum adsorption tool according to claim 7, characterized in that: There are several adsorption stations (3) and positioning parts (4).

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