Flexible secondary positioning vacuum adsorption device and positioning method thereof

Abstract

The invention relates to a flexible secondary positioning vacuum adsorption device and method, and the device comprises a main board which is provided with a positioning groove, and the positioning groove is provided with a first reference surface and a second reference surface; the positioning sliding block is provided with a butt joint groove formed by sinking inwards from the surface, and the butt joint groove comprises an X-direction movable abutting face and a Y-direction movable abutting face; the pushing assembly comprises a driving piece and a pushing rod connected with the driving piece, the pushing rod pushes the positioning sliding block to stretch into or retreat from the positioning groove, and the X-direction movable abutting face and the Y-direction movable abutting face synchronously get close to or get away from the first datum plane and the second datum plane; the vacuum adsorption part comprises an adsorption connecting channel, and the adsorption connecting channel communicates with the positioning groove; the reset assembly comprises a fixing block and a spring abutting against the fixing block, the other end of the spring abuts against the positioning sliding block, and an included angle is formed between the pushing direction of the spring and the moving direction of the push rod; by applying flexible pushing in two different directions to the product located in the positioning groove, secondary accurate positioning of the product is achieved.

Description

Technical Field

[0001] The invention relates to the technical field of a connector swing plate, and in particular to a flexible secondary positioning vacuum adsorption device and a positioning method thereof. Background Art

[0002] Precision connectors have high requirements on processing accuracy and assembly accuracy. They need to be placed in positioning devices, which will limit the positions of the precision connectors and facilitate subsequent processing of the precision connectors. In batch production, some small and medium-sized plastic parts are placed in the cavity placement equipment respectively, especially multi-cavity, small precision products with high requirements on product appearance, high precision and high difficulty in placement. After the products are placed in the placement equipment, secondary positioning is still required to achieve accurate positioning of the products.

[0003] According to Chinese patent CN109167230B, an automatic detection and assembly device for connectors is disclosed, which includes a positioning seat for placing connectors, and a positioning groove that matches the connector is provided on the positioning seat. An infrared sensor is used to monitor whether the connector falls on the positioning seat as required. However, the positioning seat of the device only relies on simple structural profiling for positioning, and has high requirements for processing accuracy and assembly accuracy, resulting in poor tolerance. When the accuracy of the product placement position deviates, the product will be bruised or crushed, affecting the production yield and quality, increasing the inspection pressure of the subsequent process and reducing the pass rate. Secondly, high-precision profiling positioning requires too much energy. If you are not careful, you will have to repeat rework at the least, and a new device will be required in severe cases. Installation and debugging increase the equipment maintenance cost and reduce the stability of the equipment.

[0004] Therefore, it is necessary to develop a flexible secondary positioning vacuum adsorption device and a positioning method thereof to solve the above problems. Summary of the invention

[0005] The purpose of the present invention is to provide a flexible secondary positioning vacuum adsorption device with good tolerance and high stability and a positioning method thereof.

[0006] To achieve the above object, the present invention provides the following technical solution: a flexible secondary positioning vacuum adsorption device, comprising: The main board is provided with a plurality of positioning grooves formed inwardly from the surface thereof, wherein the positioning grooves have a first reference surface and a second reference surface adjacent to the first reference surface; A plurality of positioning sliders, each having a docking groove formed by being recessed inward from a side surface, wherein the docking groove comprises an X-direction movable abutting surface and a Y-direction movable abutting surface adjacent to the X-direction movable abutting surface, wherein the X-direction movable abutting surface and the Y-direction movable abutting surface are opposite to the first reference surface and the second reference surface; A pushing assembly, comprising a driving member and a push rod connected to the driving member, wherein the push rod pushes the positioning slide block to extend into or withdraw from the positioning groove, and the X-direction movable abutting surface and the Y-direction movable abutting surface synchronously approach or move away from the first reference surface and the second reference surface; A vacuum adsorption portion, comprising an adsorption connection channel capable of forming a vacuum environment, wherein the adsorption connection channel is communicated with the positioning groove; The reset assembly comprises a fixed block and a spring which abuts against the fixed block, the other end of the spring abuts against the positioning slide block, and the pushing direction of the spring forms an angle with the moving direction of the push rod.

[0007] Furthermore, a through groove is provided on one side of the positioning groove, the through groove is communicated with the positioning groove, and the push rod is located in the through groove.

[0008] Furthermore, a plurality of shifting blocks are formed on one side of the push rod, one end of the shifting block is fixedly connected to the push rod, and the other end of the shifting block extends obliquely to one side of the positioning slider, and the shifting block and the push rod form an angle.

[0009] Furthermore, the angle formed by the shift block and the push rod is an acute angle, which is 45°.

[0010] Furthermore, one end of the positioning sliding block is located in the positioning groove, and the other end forms a protrusion, which extends to one side of the shift block and extends into the angle formed by the shift block and the push rod.

[0011] Furthermore, the shape of the protrusion is the same as the shape of the angle formed by the shift block and the push rod.

[0012] Furthermore, the number of the positioning grooves is changed according to demand, and is distributed from one end of the through groove to the other end thereof, and the shift block is distributed from one end of the push rod to the other end thereof, and the spacing distance thereof is the same as the spacing distance of the positioning grooves.

[0013] Furthermore, a step is provided between the passing groove and the positioning groove, and the step is recessed inward from its surface to form a fixing groove, and the fixing block is provided in the fixing groove.

[0014] Furthermore, the shape of the docking groove is the same as a partial outline of the product, the shape of the positioning groove is the same as a partial outline of the product, and the partial outline of the positioning groove and the partial outline of the docking groove are combined to form a complete outline, which is the same as the outline of the product.

[0015] A positioning method for a flexible secondary positioning vacuum adsorption device comprises the following steps: Step 1: The push rod moves into the main board, pushing the positioning slider to move the positioning slider away from the positioning groove, and the X-direction abutting surface and the Y-direction abutting surface move in the X direction and the Y direction respectively, and the distance between the positioning slider and the fixed block becomes smaller, squeezing the spring; Step 2: The product is accurately placed in the positioning groove, covering the adsorption connection channel, and the adsorption connection channel forms a vacuum state again, adsorbing the product in the positioning groove; Step 3: The push rod is reset, and the spring pushes the positioning slider into the positioning groove through elastic force. The X-direction abutting surface and the Y-direction abutting surface contact and push the side of the product in the X direction and Y direction respectively, so that the other side of the product abuts the first reference surface and the second reference surface, and the product is in place.

[0016] Compared with the prior art, the beneficial effects of the present invention are: it has the characteristics of good inclusiveness and high stability, and the vacuum adsorption part adsorbs the product in the positioning groove, and then the positioning slider is pushed by the push rod to apply flexible push in two different directions to the product in the positioning groove, thereby realizing secondary precise positioning of the product, improving equipment stability, reducing product defective rate, and increasing production capacity. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 It is a schematic diagram of the three-dimensional structure of a flexible secondary positioning vacuum adsorption device of the present invention; Figure 2 for Figure 1 The schematic diagram of the main board structure of the flexible secondary positioning vacuum adsorption device is shown; Figure 3 for Figure 2 A top view of the main board of the flexible secondary positioning vacuum adsorption device shown; Figure 4 for Figure 1 A schematic diagram of the structure of a pushing component of the flexible secondary positioning vacuum adsorption device shown; Figure 5 for Figure 4 A schematic diagram of the partial structure of the flexible secondary positioning vacuum adsorption device shown; Figure 6 for Figure 2 A cross-sectional view of the mainboard of the flexible secondary positioning vacuum adsorption device is shown. DETAILED DESCRIPTION

[0019] In order to further explain the technical means and effects adopted by the present invention to achieve the predetermined invention purpose, the flexible secondary positioning vacuum adsorption device and its positioning method proposed by the present invention, its specific implementation method, structure, characteristics and effects are described in detail as follows in combination with the accompanying drawings and preferred embodiments. In the following description, different "one embodiment" or "another embodiment" does not necessarily refer to the same embodiment. In addition, specific features, structures or characteristics in one or more embodiments may be combined in any suitable form.

[0020] Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs.

[0021] The specific scheme of the flexible secondary positioning vacuum adsorption device and the positioning method thereof provided by the present invention is described in detail below with reference to the accompanying drawings.

[0022] Please see Figures 1 to 6 A flexible secondary positioning vacuum adsorption device includes a fixed mounting plate 1, a main board 2 clamped to the fixed mounting plate 1, a pushing component 3 located on one side of the main board 2, a positioning slider 4 driven by the pushing component 3, and a vacuum adsorption part 5 arranged in the main board 2.

[0023] Please see Figure 1 The fixed mounting plate 1 is in a horizontal state and is used to carry the main board 2 and the pushing component 3. The fixed mounting plate 1 has a limiting groove 11 formed by being recessed inward from the side surface, and the number of the limiting grooves 11 can be changed according to the needs.

[0024] Please see Figure 1 The mainboard 2 is parallel to the fixed mounting plate 1 and is placed above the fixed mounting plate 1. A plurality of limit blocks 21 are installed on the lower surface of the mainboard 2. The limit blocks 21 correspond to the limit grooves 11 one by one. The limit blocks 21 extend into the limit grooves 11 to fix the relative positions of the fixed mounting plate 1 and the mainboard 2. Preferably, the mainboard 2 is installed with a guide sleeve 22, which passes through the mainboard 2 and the limit blocks 21.

[0025] Please see Figures 2 to 3 The main board 2 has a positioning groove 23 and a through groove 24 which are recessed inward from its upper surface, and a step 25 arranged between the positioning groove 23 and the through groove 24. The positioning groove 23 is connected to the through groove 24. The shape of the positioning groove 23 changes according to demand. Specifically, a partial contour of the product shape is the same as a partial contour of the positioning groove 23. The through groove 24 is located on one side of the positioning groove 23, and its depth is greater than the depth of the positioning groove 23. Preferably, the number of the positioning grooves 23 changes according to demand, and is distributed from one end of the through groove 24 to the other end thereof.

[0026] One end of the positioning groove 23 is connected to the through groove 24, and the positioning groove 23 and the through groove 24 form an angle of 45°. The step 25 is recessed inward from its surface to form a fixing groove 26, and the fixing groove 26 is parallel to the positioning groove 23. The positioning groove 23 includes a first reference surface 231 and a second reference surface 232 adjacent to the first reference surface 231, and the first reference surface 231 and the second reference surface 232 are perpendicular to each other.

[0027] Please see Figure 3 to Figure 4 The pushing assembly 3 includes a driving member 31 and a push rod 32 connected to the driving member 31. The driving member 31 is installed on the fixed mounting plate 1 and is a certain type of cylinder, which has a driving shaft 311. The driving shaft 311 extends toward the main board 2 and is engaged with the push rod 32. The push rod 32 is located in the through groove 24 and moves along the through groove 24. A plurality of shift blocks 321 are formed on one side of the push rod 32. The number of the plurality of shift blocks 321 is the same as the number of the positioning grooves 23. One end of the shift block 321 is fixedly connected to the push rod 32, and the other end extends obliquely to the step 25. Specifically, the shift block 321 forms an angle with the push rod 32, which is an acute angle. Specifically, the acute angle is 45°. The shift blocks 321 are distributed from one end of the push rod 32 to the other end thereof at intervals, and the interval distance thereof is the same as the interval distance of the positioning grooves 23.

[0028] The push rod 32 has a positioning hole 322 passing through its upper and lower surfaces. A long hole 27 is provided in the groove 24 and is recessed inward from the bottom surface of the groove 24. Fasteners such as bolts pass through the positioning hole 322 and the long hole 27 to limit the moving distance of the push rod 32.

[0029] Please see Figure 5 The positioning slider 4 is placed on the step 25, one end of which can be inserted into the positioning groove 23, and the other end extends toward the push rod 32. The end of the positioning slider 4 inserted into the positioning groove 23 is recessed inward from the side surface to form a docking groove 41. The shape of the docking groove 41 is the same as the partial contour of the product. Specifically, the docking groove 41 contacts at least two adjacent side surfaces of the product. When the docking groove 41 extends into the positioning groove 23, the partial contour of the positioning groove 23 and the partial contour of the docking groove 41 are combined to form a complete contour, which is the same as the contour of the product. The positioning slider 4 is located at one end of the push rod 32 and is placed on the step 25, adjacent to the shift block 321.

[0030] Furthermore, the docking groove 41 includes an X-direction movable abutment surface 411 and a Y-direction movable abutment surface 412 , the X-direction movable abutment surface 411 and the Y-direction movable abutment surface 412 are perpendicular to each other, and the X-direction movable abutment surface 411 and the Y-direction movable abutment surface 412 surround the product with the first reference surface 231 and the second reference surface 232 .

[0031] One end of the positioning slider 4 is located in the positioning groove 23, and the other end forms a protrusion 42, which extends to one side of the shift block 321 and extends into the angle formed by the shift block 321 and the push rod 32. Preferably, the shape of the protrusion 42 is the same as the shape of the angle formed by the shift block 321 and the push rod 32.

[0032] A reset assembly 6 is provided on one side of the positioning slider 4. The reset assembly 6 includes a fixed block 61 and a spring 62 abutting against the fixed block 61. The bottom of the fixed block 61 extends into the fixed groove 26, and the top thereof extends vertically upward to one side of the positioning slider 4. One end of the spring 62 abuts against the fixed block 61, and the other end abuts against the positioning slider 4. The pushing direction of the spring 62 forms an angle with the moving direction of the push rod 32.

[0033] Please see Figure 6 The vacuum adsorption part 5 includes an adsorption main channel 51 and an adsorption connecting channel 52 connected to the adsorption main channel 51. The adsorption main channel 51 is located in the main board 2 and is formed by the outer surface of the main board 2 being recessed inward. The outer end of the adsorption main channel 51 is connected to a docking port 53, and the inner end thereof extends to the bottom of the positioning groove 23. The bottom of the adsorption connecting channel 52 is connected to the adsorption main channel 51, and the top extends vertically upward into the positioning groove 23.

[0034] The upper surface of the main board 2 is covered with a cover plate 7 , and the cover plate 7 is provided with a through hole 71 , which corresponds to the positioning groove 23 .

[0035] A positioning method for implementing a flexible secondary positioning vacuum adsorption device comprises the following steps: Step 1: The driving member 31 drives the push rod 32 to move along the through slot 24 into the main board 2, and the shifting block 321 pushes the positioning slider 4 on the step 25 to move synchronously, so that the positioning slider 4 moves away from the positioning slot 23, and the X-direction moving abutting surface 411 and the Y-direction moving abutting surface 412 move in the X direction and the Y direction respectively, and at the same time, the distance between the positioning slider 4 and the fixed block 61 becomes smaller, squeezing the spring 62; Step 2: Use a molding robot product suction fixture (not shown) to accurately place the product into the positioning groove 23 through the guide sleeve 22, so that the product covers the adsorption connection channel 52, and then use a vacuum device (not shown) to evacuate the adsorption main channel 51, so that the adsorption main channel 51 and the adsorption connection channel 52 are in a vacuum state, and fix the product in the positioning groove 23 to prevent the product from being brought back due to static electricity; Step 3: The driving member 31 drives the push rod 32 to return along the groove 24, the shift block 321 is separated from the positioning slide block 4, and the spring 62 pushes the positioning slide block 4 to move into the positioning groove 23 through the elastic force. The X-direction moving abutment surface 411 and the Y-direction moving abutment surface 412 contact and push the side of the product in the X direction and the Y direction respectively, so that the other side of the product abuts against the first reference surface 231 and the second reference surface 232 of the positioning groove 23, and the product is in place.

[0036] The present invention provides a flexible secondary positioning vacuum adsorption device and a positioning method thereof, which have the characteristics of good inclusiveness and high stability. The product located in the positioning groove is adsorbed by a vacuum adsorption part, and then a positioning slider is pushed by a push rod to apply flexible pushes in two different directions to the product located in the positioning groove, thereby realizing secondary precise positioning of the product, improving equipment stability, reducing product defective rate, and increasing production capacity.

[0037] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A flexible secondary positioning vacuum adsorption device, characterized in that: It includes: The main board (2) is provided with a plurality of positioning grooves (23) formed inwardly from the surface thereof, wherein the positioning grooves (23) have a first reference surface (231) and a second reference surface (232) adjacent to the first reference surface (231); A plurality of positioning slide blocks (4) having a docking groove (41) formed by being recessed inwardly from a side surface, the docking groove (41) comprising an X-direction movable abutting surface (411) and a Y-direction movable abutting surface (412) adjacent to the X-direction movable abutting surface (411), the X-direction movable abutting surface (411) and the Y-direction movable abutting surface (412) being opposite to the first reference surface (231) and the second reference surface (232); A pushing assembly (3), comprising a driving member (31) and a push rod (32) connected to the driving member (31), wherein the push rod (32) pushes the positioning slide block (4) to extend into or withdraw from the positioning groove (23), and the X-direction movable abutting surface (411) and the Y-direction movable abutting surface (412) synchronously approach or move away from the first reference surface (231) and the second reference surface (232); A vacuum adsorption portion (5), comprising an adsorption connection channel (52) capable of forming a vacuum environment, wherein the adsorption connection channel (52) is in communication with the positioning groove (23); The reset assembly (6) comprises a fixed block (61) and a spring (62) that abuts against the fixed block (61); the other end of the spring (62) abuts against the positioning slide block (4); and the pushing direction of the spring (62) forms an angle with the moving direction of the push rod (32).

2. The flexible secondary positioning vacuum adsorption device according to claim 1, characterized in that: A through slot (24) is provided on one side of the positioning slot (23), the through slot (24) is in communication with the positioning slot (23), and the push rod (32) is located in the through slot (24).

3. The flexible secondary positioning vacuum adsorption device according to claim 2, characterized in that: A plurality of shifting blocks (321) are formed on one side of the push rod (32); one end of the shifting block (321) is fixedly connected to the push rod (32), and the other end of the shifting block (321) extends obliquely to one side of the positioning slider (4); the shifting block (321) and the push rod (32) form an angle.

4. The flexible secondary positioning vacuum adsorption device according to claim 3, characterized in that: The angle formed by the shifting block (321) and the push rod (32) is an acute angle, and the acute angle is 45°.

5. The flexible secondary positioning vacuum adsorption device according to claim 3, characterized in that: One end of the positioning slide block (4) is located in the positioning groove (23), and the other end forms a protrusion (42). The protrusion (42) extends to one side of the shift block (321) and extends into the angle formed by the shift block (321) and the push rod (32).

6. The flexible secondary positioning vacuum adsorption device according to claim 5, characterized in that: The shape of the protruding portion (42) is the same as the shape of the angle formed by the shifting block (321) and the push rod (32).

7. The flexible secondary positioning vacuum adsorption device according to claim 3, characterized in that: The number of the plurality of positioning grooves (23) is changed according to demand, and is distributed from one end of the through groove (24) to the other end thereof, and the shifting block (321) is distributed from one end of the push rod (32) to the other end thereof, and the spacing distance thereof is the same as the spacing distance of the positioning grooves (23).

8. The flexible secondary positioning vacuum adsorption device according to claim 2, characterized in that: A step (25) is provided between the passing groove (24) and the positioning groove (23), and the step (25) is recessed inwards from its surface to form a fixing groove (26), and the fixing block (61) is provided in the fixing groove (26).

9. The flexible secondary positioning vacuum adsorption device according to claim 1, characterized in that: The shape of the docking groove (41) is the same as a partial outline of the product, the shape of the positioning groove (23) is the same as a partial outline of the product, and the partial outline of the positioning groove (23) and the partial outline of the docking groove (41) are combined to form a complete outline, which is the same as the outline of the product.

10. A positioning method for a flexible secondary positioning vacuum adsorption device, characterized in that: The following steps are involved: Step 1: The push rod (32) moves into the main board (2) to push the positioning slider (4), so that the positioning slider (4) moves away from the positioning groove (23), the X-direction abutting surface (411) and the Y-direction abutting surface (412) move in the X direction and the Y direction respectively, the distance between the positioning slider (4) and the fixed block (61) becomes smaller, and the spring (62) is compressed; Step 2: The product is placed in the positioning groove (23) to cover the adsorption connection channel (52), and the adsorption connection channel (52) is then in a vacuum state to adsorb the product in the positioning groove (23); Step 3: The push rod (32) is reset, and the spring (62) pushes the positioning slide block (4) to move into the positioning groove (23) through the elastic force, and the X-direction abutting surface (411) and the Y-direction abutting surface (412) contact and push the side of the product in the X direction and the Y direction respectively, so that the other side of the product abuts against the first reference surface (231) and the second reference surface (232), and the product is in place.

Images