CN103817511A - Positioning method and grabbing method for valve ball - Google Patents

Abstract

The invention discloses a positioning method and a grabbing method for a valve ball. The positioning method for the valve ball is implemented through a tenon positioning block or a tenon positioning piece and a cylindrical surface positioning block or a plane positioning block. The grabbing method for the valve ball is implemented through a grabbing rod. The tenon positioning block or the tenon positioning piece is used for positioning a groove part of the valve ball, and the cylindrical surface positioning block or the plane positioning block is used for positioning a spherical surface part of the valve ball. The grabbing rod is used for sucking up the positioned valve ball and assembling the positioned valve ball on a valve rod in a valve body, so that the groove of the valve ball is matched with a tenon of the valve rod. According to the positioning method and the grabbing method for the valve ball, the problems that according to an existing valve ball, manual assembling is adopted, so that assembling efficiency is low, assembling quality is poor, and labor cost is high are solved, and the valve ball can be automatically assembled through the methods, so that the assembling efficiency of the valve ball is high, labor is saved, the technology is reasonable, and the assembling quality is good.

Description

A positioning method and a grabbing method for a valve ball

technical field

The invention relates to the technical field of mechanical design, manufacture and automation thereof, in particular to a valve ball positioning method and a grabbing method.

Background technique

Most of the current plumbing valve companies assemble the valve balls by hand. Due to high assembly precision requirements of the valve ball, very skilled workers are needed to achieve the required assembly quality, which makes the manual assembly method not only inefficient but also high in labor costs.

Contents of the invention

In order to solve the problems of manual assembly of valve balls, low assembly efficiency, and poor assembly quality, the present invention provides a valve ball positioning method and a grasping method, through which the valve ball assembly automation can be realized, and the valve ball assembly efficiency is high. Manpower saving, reasonable process, good assembly quality.

A valve ball positioning method of the present invention is realized by a tenon positioning block or a tenon positioning piece and a cylindrical positioning block or a plane positioning block, and the valve ball grabbing method is realized by a grabbing rod; the tenon positioning block or tenon positioning The piece is used to locate the groove part of the valve ball, the cylindrical positioning block or the flat positioning block is used to position the spherical part of the valve ball, and the grabbing rod is used to suck the positioned valve ball and assemble it into the valve body On the valve stem, make the groove of the valve ball match the tenon of the valve stem.

The tenon positioning block has an inclined surface, and there is a tenon on the inclined surface. The tenon is plane and three-dimensional. The most prominent plane of the tenon is parallel to the above-mentioned inclined surface. The width of the ball groove is conducive to the precise positioning of the ball groove part.

The tenon positioning piece is a thin sheet with the same thickness as the tenon of the tenon positioning block, and has a through hole groove in it to facilitate the passage of the locking screw, and can move the tenon positioning piece horizontally in a small amount. Before locking the tenon positioning piece, the tenon positioning piece can be rotated to achieve the required tenon inclination angle, and the tenon positioning piece can be adjusted horizontally to adjust the tenon positioning piece and the cylindrical positioning block or the plane positioning block To the appropriate spacing, so that the inclination angle of the tenon becomes adjustable, the method is better.

The positioning surface of the cylindrical positioning block is an inner cylindrical surface, and the diameter of the inner cylindrical surface is consistent with the diameter of the spherical surface of the valve ball.

The positioning surface of the plane positioning block is a plane.

There is a through hole in the grabbing rod, the lower end surface is a spherical concave surface, and the diameter of the spherical concave surface is consistent with the diameter of the spherical surface of the valve ball to be assembled.

The grabbing rod is connected with the negative pressure vacuum system, and the grabbing rod can absorb and loosen the valve ball by turning on and off the negative pressure vacuum system, so that the valve ball can be assembled on the valve stem in the valve body, so that the valve The ball groove mates with the stem tenon.

A valve ball positioning method and grasping method described in the present invention are as follows.

(1) The tenon positioning block and the cylindrical positioning block are installed on the mold base so that the tenon of the tenon positioning block is facing the inner cylindrical surface of the cylindrical positioning block, and the alignment between the tenon positioning block and the cylindrical positioning block is adjusted. Pitch, place the valve ball in between, so that the tenon of the tenon positioning block is stuck in the ball groove, the upper and lower edges of the ball groove are close to the most prominent plane of the tenon, and the direction of the ball groove is consistent with the tenon The direction of the most protruding plane is the same, which is determined by the inclination angle of the most protruding plane of the tenon. At the same time, the large horizontal circle of the spherical surface of the valve ball is next to the inner cylindrical surface of the cylindrical positioning block, so that the valve ball to be assembled can be accurately positioned. At this time, the valve ball can be easily taken out, and the groove of the valve ball is inclined at a certain angle, which can facilitate the assembly and cooperation of the groove of the valve ball and the tenon of the valve stem. Since the groove of the valve ball is stuck on the tenon of the tenon positioning block, the tenon really works, so the tenon positioning block can be replaced by the tenon positioning piece, and the tenon positioning piece is the thickness of the tenon positioning block. The tenon is a sheet with the same thickness, and there is a through hole in the middle to facilitate the passage of the locking screw, and the tenon positioning piece can be moved horizontally by a small amount. Before locking the tenon positioning piece, the tenon positioning piece can be rotated to achieve the required tenon inclination angle, and the tenon positioning piece can be moved slightly horizontally to adjust the proper distance between the tenon positioning piece and the cylindrical positioning block , so that the inclination angle of the tenon becomes adjustable, and the method is better; the cylindrical positioning block can also be replaced by a plane positioning block.

(2) The grabbing rod is fixedly connected to the device that can move horizontally and vertically. The grabbing rod moves to just above the positioned valve ball, and moves down until the spherical concave surface of the grabbing rod is about to touch the valve ball. Stop when it is on the upper surface, then turn on the negative pressure vacuum system, the grabbing rod will suck the valve ball, move it to the top of the valve body, and then move down to assemble the valve ball on the valve stem in the valve body, so that the valve ball is concave Groove mates with stem tenon.

The beneficial effects of the present invention are: adopting the above scheme, the automatic assembly of the valve ball can be realized, the assembly efficiency is high, manpower is saved, the process is reasonable, and the assembly quality is good.

Description of drawings

Fig. 1 is a schematic diagram of parts used to realize the present invention.

Fig. 2 is a schematic perspective view of a preferred embodiment of the present invention.

Fig. 3 is a schematic diagram of a product to be assembled in the embodiment.

Fig. 4 is a schematic diagram of the tenon positioning piece replacing the tenon positioning block.

The parts in the drawings are marked as follows: 1. Cylindrical positioning block, 2. Tenon positioning block, 5. Grab rod, 7. Valve stem, 8. Valve ball, 10. Tenon positioning piece, 37. Die seat, 40. Valve body.

Detailed ways

A preferred embodiment of the present invention will be described in detail below in conjunction with the accompanying drawings.

Please refer to Fig. 2, as shown in Fig. 1 and Fig. 3, this embodiment includes: a mold base 37, a cylindrical positioning block 1, a tenon positioning block 2, and a grab bar 5; the tenon positioning block 2 and the cylindrical positioning The block 1 is installed on the mold base 37, and the valve ball 8 is placed between the tenon positioning block 2 and the cylindrical positioning block 1; the grabbing rod 5 is connected with the negative pressure vacuum system, and through the on-off of the negative pressure vacuum system, To realize the suction and loosening of the valve ball 8 by the grasping rod 5, so that the valve ball 8 is assembled on the valve stem 7 in the valve body 40, and the groove of the valve ball 8 is matched with the tenon of the valve stem 7. Grabbing rod 5 is fixedly connected on the device that can move horizontally and vertically, and is arranged above the mold base 37; the valve body 40 with valve rod 7 is placed in the mold base 37.

Please refer to Fig. 1 in conjunction with Fig. 3 and Fig. 4, the tenon positioning block 2 has a slope, and there is a tenon on the slope. Perpendicular to the above slope, the thickness of the tenon is slightly smaller than the width of the groove of the valve ball 8, which is beneficial to accurately locate the groove of the valve ball 8; the positioning surface of the cylindrical positioning block 1 is an inner cylindrical surface, and the diameter of the inner cylindrical surface is the same as that of the valve The diameter of the spherical surface of the ball 8 is consistent; there is a through hole in the grabbing rod 5, and the lower end surface is a spherical concave surface, and the diameter of the spherical concave surface is consistent with the spherical diameter of the valve ball 8 to be assembled; The thickness of the tenon is the same, there is a through hole in the middle to facilitate the passage of the locking screw, and the tenon positioning piece can be moved horizontally in a small amount. Before locking the tenon positioning piece, the tenon positioning piece can be rotated to achieve the required tenon. The angle of inclination can be adjusted to a proper distance between the tenon positioning plate and the cylinder positioning block by slightly moving the tenon positioning plate horizontally, so that the inclination angle of the tenon becomes adjustable, and the method is better; the cylinder positioning block can also be adjusted by a plane positioning blocks instead.

This embodiment operates according to the following steps.

(1) The tenon positioning block 2 and the cylindrical positioning block 1 are installed on the mold base 37, so that the tenons of the tenon positioning block 2 are facing the inner cylindrical surface of the cylindrical positioning block 1, and the tenon positioning block 2 is adjusted. The distance from the cylindrical positioning block 1, place the valve ball 8 in between, so that the tenon of the tenon positioning block 2 is stuck in the groove of the valve ball 8, and the upper and lower lines of the groove of the valve ball 8 are close to the most prominent tenon. plane, so that the direction of the groove of the valve ball 8 changes from the vertical direction to the direction of the most protruding plane of the tenon, and at the same time, the horizontal large circle of the spherical surface of the valve ball 8 is adjacent to the inner cylindrical surface of the cylindrical positioning block 1, so that it can be precisely Locate the valve ball 8 to be assembled, and now the valve ball 8 can be easily taken out therefrom. The tenon positioning block 2 in this embodiment can be replaced by the tenon positioning piece 10, the thickness of the tenon positioning piece 10 is consistent with the tenon thickness of the tenon positioning block 2, there is a through hole groove in the middle to facilitate the passage of the locking screw, and The tenon positioning piece 10 can be moved horizontally in a small amount. Before locking the tenon positioning piece 10, the required tenon inclination angle can be achieved by rotating the tenon positioning piece 10, and the adjustment can be achieved by slightly moving the tenon positioning piece 10 horizontally. The tenon positioning piece 10 and the cylindrical positioning block 1 have a suitable distance, so that the inclination angle of the tenon becomes adjustable, and the method is better.

(2) The grabbing rod 5 is fixedly connected to the device that can move horizontally and vertically. The grabbing rod 5 moves to just above the positioned valve ball 8, and moves down until the spherical concave surface of the grabbing rod 5 is about to Stop when touching the upper surface of the valve ball 8, turn on the negative pressure vacuum system, grab the valve ball 8 by the grab rod 5, move it to the top of the valve body 40, and then move down to assemble the valve ball 8 to the valve body 40 On the inner valve stem 7, the groove of the valve ball 8 is matched with the tenon of the valve stem 7.

The above assembly method has reasonable process, good assembly quality and high assembly efficiency.

What is described in this article is only an embodiment of the application of the present invention, and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the description and drawings of the present invention, or directly or indirectly used in other Related technical fields are all included in the patent protection scope of the present invention in the same way.

Claims (7)

1. A positioning method and a grasping method of a valve ball in the present invention, wherein the positioning method of the valve ball is realized by a tenon positioning block or a tenon positioning piece and a cylindrical positioning block or a plane positioning block, wherein the valve ball grasping method Realized by grabbing rod; the tenon positioning block or tenon positioning piece is used for positioning the groove part of the valve ball, the cylindrical positioning block or plane positioning block is used for positioning the spherical part of the valve ball, and the grabbing rod is used It is used to absorb the positioned valve ball and assemble it on the valve stem in the valve body, so that the groove of the valve ball matches the tenon of the valve stem. 2. A valve ball positioning method and grasping method according to claim 1, characterized in that: said tenon positioning block has an inclined surface, on which there is a tenon, and the tenon is flat and three-dimensional, and the tenon is the most prominent The plane of the tenon is parallel to the above-mentioned slope, the planes on both sides of the tenon are perpendicular to the above-mentioned slope, and the thickness of the tenon is slightly smaller than the width of the valve ball groove. 3. A valve ball positioning method and grasping method according to claim 1, characterized in that: the tenon positioning piece is a thin sheet with the same thickness as the tenon thickness of the tenon positioning block, wherein The through-hole groove is convenient for the locking screw to pass through, and can move the tenon positioning piece horizontally; before locking the tenon positioning piece, the required tenon inclination angle can be achieved by rotating the tenon positioning piece , the tenon positioning piece can be moved slightly horizontally to adjust the proper distance between the tenon positioning piece and the cylindrical positioning block or plane positioning block, so that the tenon inclination angle becomes adjustable, and the method is better . 4. The valve ball positioning method and grasping method according to claim 1, characterized in that: the positioning surface of the cylindrical positioning block is an inner cylindrical surface. 5. A valve ball positioning method and grabbing method according to claim 1, characterized in that: the positioning surface of the plane positioning block is a plane. 6. A valve ball positioning method and grabbing method according to claim 1, characterized in that: there is a through hole in the grabbing rod, the lower end surface is a spherical concave surface, and the diameter of the spherical concave surface is the same as that of the valve to be assembled. The diameter of the spherical surface is consistent; the grabbing rod is connected to the negative pressure vacuum system, and the grabbing rod can absorb and loosen the valve ball through the on-off of the negative pressure vacuum system, so that the valve ball can be assembled into the valve body of the valve body. On the stem, match the groove of the ball with the tenon of the stem. 7. A valve ball positioning method and grasping method according to claim 1, characterized in that: the positioning and grasping of the valve ball are as follows: (1) the tenon positioning block or the tenon The positioning piece and the cylindrical positioning block or the plane positioning block are installed on the same mold base, so that the tenon of the tenon positioning block or the tenon positioning piece is facing the cylindrical positioning block or the The positioning surface of the plane positioning block, adjust the distance between the tenon positioning block or the tenon positioning piece and the cylindrical positioning block or the plane positioning block, and place the valve ball in between, so that the tenon positioning block The tenon of the tenon positioning block or the tenon positioning piece is stuck in the valve ball groove, the upper and lower edges of the valve ball groove are close to the most prominent plane of the tenon, and the direction of the valve ball groove is consistent with the most prominent plane of the tenon. It is determined by the inclination angle of the most protruding plane of the tenon. At the same time, the horizontal large circle of the spherical surface of the valve ball is next to the positioning surface of the cylindrical positioning block or the positioning block of the plane positioning block, so that the valve ball to be assembled can be accurately positioned. At this time, the valve ball can be easily taken out from it, and the groove of the valve ball is inclined at a certain angle, which is easier to assemble and cooperate with the groove of the valve ball and the tenon of the valve stem; (2) The grabbing rod is fixed on a horizontal, On the device that moves vertically, the grabbing rod moves to just above the positioned valve ball, moves down until the spherical concave surface of the grabbing rod is about to touch the upper surface of the valve ball and stops, and the grabbing rod moves the valve ball Suction, move to the top of the valve body, and then move down to fit the valve ball into the valve body so that the groove of the valve ball fits with the tenon of the valve stem.

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