Miniature bidirectional centering device

Abstract

The utility model relates to a miniature bidirectional centering device which comprises a platform, a left-right centering mechanism and a front-back centering mechanism, the left-right centering mechanism comprises a first double-head air cylinder and a pair of left and right clamping jaws symmetrically driven by the first double-head air cylinder along a first mirror plane; the front-back centering mechanism comprises a second double-head air cylinder and a pair of front-back clamping jaws symmetrically driven by the second double-head air cylinder along a second mirror image face, the first mirror image face and the second mirror image face perpendicularly intersect on the vertical shaft, and the first double-head air cylinder and the second double-head air cylinder are arranged below the platform in an overlapped mode. The highest point of the left-right clamping jaw and the highest point of the front-back clamping jaw are all higher than the upper surface of the platform. The positions of the platform, the first double-head air cylinder and the second double-head air cylinder are staggered up and down, each double-head air cylinder controls centering in one direction, actions of the left clamping jaw, the right clamping jaw, the front clamping jaw and the rear clamping jaw do not interfere with each other, the peripheral space of the platform is saved, and the device is suitable for bidirectional centering positioning of small parts.

Description

Technical Field

[0001] The utility model relates to the technical field of positioning fixtures, in particular to a miniature bidirectional centering device. Background Art

[0002] During the AMD (Advanced Microelectronics) product testing process, the products are tested by taking photos of the top and bottom and using a puzzle. Since the testing action path is the same, in order to ensure that the top and bottom of the same AMD product remain consistent during the testing process, the landing point position needs to be the same. Currently, most of the market uses visual guidance for positioning, but AMD products do not have fixed mark points, so the landing point position cannot be guaranteed to be the same, affecting the puzzle test data.

[0003] Currently, many two-way centering devices on the market are designed for large parts. For example, Chinese patent CN212420436U discloses a device for centering positioning, in which gears are used to synchronously drive two transmission racks to control the reverse movement of the centering claws on both sides. However, only parts with relatively large sizes need to use racks to transmit power, which is not suitable for clamping small parts.

[0004] Therefore, it is necessary to provide a small-volume bidirectional centering device to solve the above problems. Utility Model Content

[0005] The main purpose of the utility model is to provide a miniature two-way centering device, which can center parts on a platform in two directions through a simple centering mechanism, saves space, and is suitable for two-way centering and positioning of small parts.

[0006] The utility model achieves the above-mentioned purpose through the following technical scheme: a miniature bidirectional centering device, including a platform, a left-right centering mechanism and a front-back centering mechanism, the left-right centering mechanism includes a first double-headed cylinder and a pair of left-right clamping jaws symmetrically driven by the first double-headed cylinder along a first mirror plane, the front-back centering mechanism includes a second double-headed cylinder and a pair of front-and-back clamping jaws symmetrically driven by the second double-headed cylinder along a second mirror plane, the first mirror plane and the second mirror plane intersect perpendicularly at the vertical axis, the first double-headed cylinder and the second double-headed cylinder are stacked below the platform, and the highest points of the left and right clamping jaws and the highest points of the front and back clamping jaws are both higher than the upper surface of the platform.

[0007] Specifically, the first double-headed cylinder and the second double-headed cylinder are arranged back to back on the upper and lower surfaces of a fixed plate, the two driving heads of the first double-headed cylinder are upward, and the two left and right clamps are respectively connected to the two driving heads of the first double-headed cylinder, and the two driving heads of the second double-headed cylinder are downward, and the two front and rear clamps are respectively connected to the two driving heads of the second double-headed cylinder.

[0008] Furthermore, the left and right clamping jaws and the front and rear clamping jaws are all L-shaped structures, including a horizontal portion connected to the driving head and a vertical portion extending to the side of the upper surface of the platform.

[0009] Furthermore, each side of the platform is provided with a gap to avoid the vertical portion.

[0010] Furthermore, the platform is connected to the top of the first double-headed cylinder through two fixing blocks, the horizontal parts of the left and right clamps are located in the space between the two fixing blocks, and the lower surface of the platform does not contact the horizontal parts of the left and right clamps.

[0011] Specifically, a pipeline is provided in the platform, and the pipeline includes a longitudinal pipe, a plurality of transverse pipes perpendicularly intersecting the longitudinal pipe, and a plurality of air intake pipes connecting the transverse pipes and the upper surface of the platform.

[0012] The beneficial effects of the technical solution of the utility model are:

[0013] This device achieves this by staggering the positions of the platform, the first double-headed cylinder and the second double-headed cylinder up and down. Each double-headed cylinder controls the centering in one direction. The left and right clamps and the front and rear clamps do not interfere with each other, saving space on the periphery of the platform. It is suitable for two-way centering positioning of small parts, and ensures that the center of the AMD product is in the same position before inspection. When the AMD product needs to be inspected by upper and lower jigsaw puzzles, the material picking and dropping of the AMD product are at the same point. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 A three-dimensional diagram of a micro bidirectional centering device according to an embodiment;

[0015] Figure 2 A three-dimensional diagram of the miniature bidirectional centering device of the embodiment from another angle;

[0016] Figure 3 is a cross-sectional view of the platform;

[0017] Figure 4 A top view of the micro bi-directional centering device clamping a part.

[0018] The numbers in the figure represent:

[0019] 100-Micro two-way centering device,

[0020] 1- platform, 11- notch, 12- longitudinal tube, 13- transverse tube, 14- suction tube;

[0021] 2a-left and right centering mechanism, 21a-first double-headed cylinder, 22a-left and right clamping jaws, 2b-front and rear centering mechanism, 21b-second double-headed cylinder, 22b-front and rear clamping jaws, 221-horizontal part, 222-vertical part;

[0022] 3-Fixed plate;

[0023] 4-Fixed block;

[0024] 200-parts. DETAILED DESCRIPTION

[0025] The utility model is further described in detail below in conjunction with specific embodiments.

[0026] Example:

[0027] like Figure 1 , Figure 2 and Figure 4 As shown, a miniature bidirectional centering device 100 of the utility model comprises a platform 1, a left-right centering mechanism 2a and a front-back centering mechanism 2b, the left-right centering mechanism 2a comprises a first double-headed cylinder 21a and a pair of left-right clamping jaws 22a driven symmetrically along a first mirror plane by the first double-headed cylinder 21a, the front-back centering mechanism 2b comprises a second double-headed cylinder 21b and a pair of front-and-back clamping jaws 22b driven symmetrically along a second mirror plane by the second double-headed cylinder 21b, the first mirror plane and the second mirror plane intersect at right angles to the vertical axis, the first double-headed cylinder 21a and the second double-headed cylinder 21b are stacked below the platform 1, and the highest points of the left-right clamping jaws 22a and the highest points of the front-and-back clamping jaws 22b are both higher than the upper surface of the platform 1.

[0028] Platform 1 is used to support part 200 and determine the lower surface reference of part 200. The left and right centering mechanism 2a and the front and rear centering mechanism 2b respectively perform centering of part 200 in two directions, both of which are along the horizontal plane. When the two left and right clamps 22a are clamped, the center position of the left and right clamping parts of part 200 is in the first mirror plane. When the two front and rear clamps 22b are clamped, the center position of the front and rear clamping parts of part 200 is in the second mirror plane. Part 200 is generally rectangular, so its structural center (diagonal intersection) is on the above vertical axis. In this way, part 200 without a mark point on the surface can be centrally positioned. The positions of platform 1, the first double-headed cylinder 21a and the second double-headed cylinder 21b are staggered up and down. Each double-headed cylinder controls the centering in one direction. The left and right clamps 22a and the front and rear clamps 22b will not interfere with each other, saving space on the periphery of platform 1, and is suitable for two-way centering and positioning of small parts. The left and right clamps 22a can be centered by translation or by rotation around the axis, and the front and rear clamps 22b can be centered by translation or by rotation around the axis, as long as the symmetry of the movement of the two is maintained. The two-way centering device ensures that the center of the AMD product is at the same position before the product is tested, and when the AMD product needs to be tested by upper and lower jigsaw puzzles, the material removal and drop of the AMD product are at the same point.

[0029] like Figure 1 and Figure 2 As shown, the first double-headed cylinder 21a and the second double-headed cylinder 21b are arranged back to back on the upper and lower surfaces of a fixed plate 3, the two driving heads of the first double-headed cylinder 21a are upward, and the two left and right clamping jaws 22a are respectively connected to the two driving heads of the first double-headed cylinder 21a, and the two driving heads of the second double-headed cylinder 21b are downward, and the two front and rear clamping jaws 22b are respectively connected to the two driving heads of the second double-headed cylinder 21b.

[0030] The first double-headed cylinder 21a and the second double-headed cylinder 21b are fixed to the same fixed plate 3, so the moving centers of the two are fixed to each other, and there will be no relative position shaking to cause the problem of unstable centering position. Compared with the double-headed cylinder with the driving head located at both ends, the size of the part 200 that can be applied to this double-headed cylinder can be smaller. Because in theory, the minimum clamping distance of the first double-headed cylinder 21a is only limited by the left-right dimension of the platform 1, and the minimum clamping distance of the second double-headed cylinder 21b is limited by the front-to-back direction of the platform 1 and the front-to-back length of the second double-headed cylinder 21b itself.

[0031] like Figures 1 to 4 As shown, the left and right clamps 22a and the front and rear clamps 22b are L-shaped structures, including a horizontal portion 221 connected to the drive head and a vertical portion 222 extending to the side of the upper surface of the platform 1. Each side of the platform 1 is provided with a notch 11 to avoid the vertical portion 222.

[0032] This type of clamping structure is easy to process. The platform 1 is not a complete rectangular surface, and the four corners of the part 200 are still within the upper projection range of the platform 1. The notch 11 allows each side of the part 200 to have an intermediate section exposed from the side of the platform 1, so that the vertical portion 222 can clamp

[0033] like Figure 2 As shown, the platform 1 is connected to the top of the first double-headed cylinder 21a through two fixing blocks 4, the horizontal parts 221 of the left and right clamps 22a are located in the space between the two fixing blocks 4, and the lower surface of the platform 1 does not contact the horizontal parts 221 of the left and right clamps 22a.

[0034] The fixing block 4 connects the platform 1 and the first double-headed cylinder 21a as a whole, and the two cannot move at will. The horizontal parts 221 of the left and right clamps 22a are relatively close to the lower surface of the platform 1. In order to avoid the platform 1 generating friction on the horizontal parts 221 of the left and right clamps 22a, the fixing block 4 is required to control the distance between the platform 1 and the first double-headed cylinder 21a. At the same time, the fixing block 4 also protects the driving head of the first double-headed cylinder 21a.

[0035] like Figures 1 to 3As shown, a pipeline is provided inside the platform 1 , and the pipeline includes a longitudinal pipe 12 , a plurality of transverse pipes 13 perpendicularly intersecting the longitudinal pipe 12 , and a plurality of suction pipes 14 connecting the transverse pipes 13 and the upper surface of the platform 1 .

[0036] In order to avoid the bottom surface of the part 200 from rubbing against the platform 1 and damaging the surface during the centering process, a slight air blowing can be performed through the pipeline, so that the bottom surface of the part 200 is temporarily separated from the platform 1 without flying out. The longitudinal tube 12 and the transverse tube 13 are both horizontally drilled blind holes. The longitudinal tube 12 needs to have a position for ventilation, so the opening is connected to the hose (not shown) located on the side of the platform 1. The transverse tube 13 needs to be ventilated inside the platform 1, so its opening should be sealed with a plug (not shown). The longitudinal tube 12 and the transverse tube 13 form a uniform air structure, and the pressure is distributed to various places on the upper surface of the platform 1 through the suction pipe 14, thereby forming a uniformly distributed air pressure on the upper surface of the platform 1.

[0037] The working process of the micro bidirectional centering device 100 is as follows:

[0038] The left and right clamps 22a and the front and rear clamps 22b move outwardly away from the sides of the platform 1, leaving a large enough space so that the part 200 can be placed on the platform 1 first; then the platform 1 blows air slightly upward through the air blowing pipe 14 to make the part 200 float and avoid friction with the upper surface of the platform 1; then the first double-headed cylinder 21a drives the two left and right clamps 22a to move closer, and the second double-headed cylinder 21b drives the two front and rear clamps 22b to move closer, thereby pressing against the four sides of the part 200, and then the part 200 is centered in both directions; the air blowing pipe 14 stops blowing, and the centering is completed.

[0039] The above are only some embodiments of the present invention. For those skilled in the art, several modifications and improvements can be made without departing from the inventive concept of the present invention, which all belong to the protection scope of the present invention.

Claims

1. A miniature two-way centering device, comprising a platform, a left-right centering mechanism and a front-back centering mechanism, characterized in that: The left and right centering mechanism includes a first double-headed cylinder and a pair of left and right clamps driven symmetrically along a first mirror plane by the first double-headed cylinder, and the front and rear centering mechanism includes a second double-headed cylinder and a pair of front and rear clamps driven symmetrically along a second mirror plane by the second double-headed cylinder. The first mirror plane and the second mirror plane intersect perpendicularly at the vertical axis. The first double-headed cylinder and the second double-headed cylinder are stacked below the platform, and the highest points of the left and right clamps and the highest points of the front and rear clamps are both higher than the upper surface of the platform.

2. The micro bidirectional centering device according to claim 1, characterized in that: The first double-headed cylinder and the second double-headed cylinder are arranged back to back on the upper and lower surfaces of a fixed plate, the two driving heads of the first double-headed cylinder are upward, and the two left and right clamps are respectively connected to the two driving heads of the first double-headed cylinder, and the two driving heads of the second double-headed cylinder are downward, and the two front and rear clamps are respectively connected to the two driving heads of the second double-headed cylinder.

3. The micro bidirectional centering device according to claim 2, characterized in that: The left and right clamping jaws and the front and rear clamping jaws are all L-shaped structures, including a horizontal portion connected to the driving head and a vertical portion extending to the side of the upper surface of the platform.

4. The micro bidirectional centering device according to claim 3, characterized in that: Each side of the platform is provided with a notch to avoid the vertical portion.

5. The micro bidirectional centering device according to claim 3, characterized in that: The platform is connected to the top of the first double-headed cylinder through two fixing blocks, the horizontal parts of the left and right clamps are located in the space between the two fixing blocks, and the lower surface of the platform does not contact the horizontal parts of the left and right clamps.

6. The micro bidirectional centering device according to claim 1, characterized in that: A pipeline is arranged inside the platform, and the pipeline includes a longitudinal pipe, a plurality of transverse pipes perpendicularly intersecting the longitudinal pipe, and a plurality of air intake pipes connecting the transverse pipes and the upper surface of the platform.

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