A precise feeding mechanism for plastic parts

Abstract

The present invention provides a precise plastic part feeding mechanism that can accurately and efficiently place flexible plastic parts into a jig, thereby achieving automatic feeding of flexible products. The mechanism comprises a floating feeding head, a product guide seat, a jig, and a jig positioning mechanism. The jig positioning mechanism is provided at the bottom of the jig. When in operation, the upper positioning protrusion of the jig positioning mechanism is inserted into the corresponding positioning hole groove at the bottom of the jig. The product guide seat specifically comprises an upper reference plate and a lower guide pressure plate. The center of the upper reference plate is provided with an avoidance surface hole. The upper reference plate is surrounded by mounting holes for fixing to corresponding upper fixing equipment of the production line. The center of the lower guide pressure plate is provided with a contoured hole that conforms to the edge of the product. The lower guide pressure plate is connected to the upper reference plate via a set of compression springs.

Description

Technical Field

[0001] The present invention relates to the technical field of plastic part feeding, and in particular to a precise plastic part feeding mechanism. Background Art

[0002] Flexible plastic parts are widely used in the manufacturing industry. Common electronic products such as mobile phones and computers contain such components. Since these components are flexible plastic parts, the material is relatively soft and deformation is relatively serious. In automated operations, they require auxiliary fixation with jigs to achieve automated assembly. However, since they are flexible products, they cannot be accurately placed in the jig automatically. Currently, they are placed manually, which is inefficient. Summary of the Invention

[0003] In response to the above problems, the present invention provides a precise plastic part feeding mechanism, which can accurately and efficiently place flexible plastic parts into a fixture, thereby realizing automatic feeding of flexible products.

[0004] The fixing mechanism of claim 1, wherein the fixing mechanism comprises a bottom surface of the fixing plate and a bottom surface of the fixing plate, the bottom surface of the fixing plate being fixed with the fixing plate and the bottom surface of the fixing plate. The floating loading head is provided on the upper part of the seat, and the floating loading head includes a driving head, a vacuum suction cup, a base, and a product pressing plate. The upper end of the driving head is connected to a power driving structure, and the lower end of the driving head is connected to the base below through a second guide pin. There is a gap between the upper surface of the base and the lower surface of the driving head. The upper surface of the base is provided with a vacuum suction cup, and the vacuum suction cup is provided with a number of downwardly convex suction heads with springs. The central surface area of ​​the lower surface of the base is fixed with a product pressing plate, and the lower suction end of the suction head is fixed with a product pressing plate. After passing through the base, it convexes downward on the product pressure plate. The suction head is arranged in the shape of the contour of the product to be adsorbed. The outer periphery of the lower surface of the base is provided with a diagonally arranged downwardly convex second positioning pin. Two pairs of the guide positioning holes are provided at the four corners of the jig. The central area of ​​the upper surface of the jig is concave to form a product guide cavity. The first positioning pin and the second positioning pin are respectively arranged in the two pairs of the guide positioning holes. In the pressed state, the second positioning pin passes through the avoidance hole and is inserted into the corresponding guide positioning hole.

[0005] It is further characterized by:

[0006] The four mounting holes on the upper reference plate are waist-shaped holes, which are convenient for alignment installation;

[0007] There are four compression springs, which are arranged at four corners of a rectangle to ensure reliable flexible compression.

[0008] There are four second guide pins, which are arranged at the four corners of a rectangle to ensure that the linear guidance is stable and reliable.

[0009] After adopting the above technical solution, the jig moves along the production line to the plastic part loading station. The jig positioning mechanism lifts the jig to position it and then lifts it, so that the first positioning pin of the upper product guide seat is inserted into one of the pair of guide positioning holes, and the lower guide pressure plate is pressed tightly against the upper surface of the jig to ensure the stable and reliable arrangement of the jig. Then the power drive device drives the floating loading head to be placed above the product, and the suction head absorbs the product. Then the power drive device drives the floating loading head to move above the jig, and then drives the floating loading head downward vertically, through the second positioning pin and the other pair of guide positioning holes of the jig. The holes match and are precisely guided downward. The spring of the suction head and the second guide pin ensure the overall floating of the loading head and it will not get stuck. The suction head of the vacuum suction cup releases its suction, and the product is accurately corrected through the guide cavity of the jig. The product pressing plate flattens the product and places it accurately in the jig. Then the jig positioning mechanism falls to the production line, and the jig and the floating loading head and the product guide seat are separated. The product is fixed in the jig, and the floating loading head is removed and repeatedly transferred. Finally, the product flows into the next workstation through the production line with the jig. It can place flexible plastic parts into the jig accurately and efficiently, realizing automatic loading of flexible products. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0011] Figure 2 This is a schematic diagram of the main structure of the present invention;

[0012] Figure 3 It is a schematic diagram of the three-dimensional structure of the fixture and product of the present invention;

[0013] Figure 4 It is a schematic cross-sectional structural diagram of the product guide seat of the present invention;

[0014] The names corresponding to the serial numbers in the figure are as follows:

[0015] Floating loading head 1, product guide seat 2, jig 3, guide positioning hole 31, product guide cavity 32, jig positioning mechanism 4, upper positioning protrusion 41, upper reference plate 5, lower guide pressure plate 6, mounting hole 7, contour hole 8, compression spring 9, first positioning pin 10, avoidance hole 11, first guide pin 12, linear guide hole 13, drive head 14, vacuum suction cup 15, base 16, product pressure plate 17, second guide pin 18, suction head 19, second positioning pin 20, product 21. DETAILED DESCRIPTION

[0016] A precise feeding mechanism for plastic parts, see Figures 1-4:It includes a floating loading head 1, a product guide seat 2, a fixture 3, and a fixture positioning mechanism 4. The bottom of the fixture 3 is provided with a fixture positioning mechanism 4. When the fixture positioning mechanism 4 is in working condition, the upper positioning protrusion 41 is inserted into the corresponding positioning hole groove at the bottom of the fixture 3. The product guide seat 2 specifically includes an upper reference plate 5 and a lower guide pressure plate 6. The center of the upper reference plate 5 is provided with an avoidance surface hole. The upper reference plate 5 is provided with mounting holes 7 around it. The mounting holes 7 are used to fix the corresponding upper fixing equipment of the production line. The center of the lower guide pressure plate 6 is provided with a hole. There is a profiling hole 8 that is shaped like the edge of the product. The lower guide pressure plate 6 is connected to the upper reference plate 5 located above through a set of compression springs 9. The position of the lower guide pressure plate 6 corresponding to a pair of diagonal guide positioning holes 31 of the jig 3 is also provided with a downwardly protruding first positioning pin 10. The position of the lower guide pressure plate 6 corresponding to the other diagonal guide positioning hole 31 of the jig is also provided with an avoidance hole 11. The first guide pin 12 passes through the upper reference plate 5 and then passes through the linear guide hole 13 of the lower guide pressure plate 6. A floating loading head 1 is provided on the upper part of the product guide seat 2. The floating loading head 1 includes a driving head 14, a vacuum suction cup 15, a base 16, and a product pressing plate 17. The upper end of the driving head 14 is connected to an external power driving structure, and the lower end of the driving head 14 is connected to the base 16 below through a second guide pin 18. There is a gap between the upper surface of the base 16 and the lower surface of the driving head 14. The upper surface of the base 16 is arranged with a vacuum suction cup 15, and the vacuum suction cup 15 is provided with a number of downwardly convex spring-loaded suction heads 19. The central area of ​​the lower surface of the base 16 is fixed with a product pressing plate 17, and the lower suction end of the suction head 19 passes through the base. 16 is convex at the rear of the product pressing plate 17, and the suction head 19 is arranged in the shape of the contour of the product to be adsorbed. The outer periphery of the lower surface of the base 16 is provided with a diagonally arranged downwardly convex second positioning pin 20, and two pairs of guide positioning holes 31 are provided at the four corners of the fixture 3. The central area of ​​the upper surface of the fixture 3 is concave to form a product guide cavity 32. The first positioning pin 10 and the second positioning pin 20 are respectively arranged in the two pairs of guide positioning holes 31. In the pressed state, the second positioning pin 20 passes through the avoidance hole 11 and is inserted into the corresponding guide positioning hole 31.

[0017] The surrounding mounting holes 7 on the upper reference plate 5 are waist-shaped holes, which are convenient for alignment and installation;

[0018] There are four compression springs 9, which are arranged at the four corners of a rectangle to ensure reliable flexible compression.

[0019] There are four second guide pins 18 , which are arranged at the four corners of a rectangle to ensure that the linear guidance is stable and reliable.

[0020] Its working principle is as follows: the jig moves along the production line to the plastic part loading station, the jig positioning mechanism lifts the jig to position it and then lifts it, so that the first positioning pin of the upper product guide seat is inserted into one of the pair of guide positioning holes, and the lower guide pressure plate is pressed tightly against the upper surface of the jig to ensure the stable and reliable arrangement of the jig, and then the power drive device drives the floating loading head to be placed above the product, and the suction head absorbs the product, and then the power drive device drives the floating loading head to move to the top of the jig, and then drives the floating loading head downward vertically, through the second positioning pin and the other pair of guide positioning holes of the jig. The product is accurately corrected through the guide cavity of the jig, and the product pressing plate flattens the product and places it accurately in the jig. Then the jig positioning mechanism falls to the production line, and the jig and the floating loading head and the product guide seat are separated. The product is fixed in the jig, and the floating loading head is removed and transferred repeatedly. Finally, the product flows into the next workstation through the production line with the jig. It can place flexible plastic parts into the jig accurately and efficiently, realizing automatic loading of flexible products.

[0021] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the invention can be embodied in other specific forms without departing from the spirit or essential characteristics of the invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be included therein. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

[0022] In addition, it should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

Claims

1. A precise plastic part feeding mechanism, characterized by: The invention relates to a method for fixing the guide rails of the production line to the production line, wherein the guide rails are fixed with the upper and lower guide rails respectively, and the guide rails are fixed with the upper and lower guide rails respectively, so that the guide rails are fixed with the upper and lower guide rails respectively. The floating loading head comprises a driving head, a vacuum suction cup, a base, and a product pressing plate, the upper end of the driving head is connected to a power driving structure, the lower end of the driving head is connected to the base below by a second guide pin, the upper surface of the base and the lower surface of the driving head are spaced apart, a vacuum suction cup is arranged on the upper surface of the base, the vacuum suction cup is provided with a plurality of downwardly convex spring-loaded suction heads, the central surface area of ​​the lower surface of the base is fixed with a product pressing plate, the lower suction end of the suction head passes through the base and then protrudes downwardly from the product pressing plate, the suction heads are arranged in the shape of the contour of the product to be adsorbed, the outer periphery of the lower surface of the base is provided with diagonally arranged downwardly convex second positioning pins, two pairs of the guide positioning holes are provided at the four corners of the jig, the central area of ​​the upper surface of the jig is concave to form a product guide cavity, the first positioning pin and the second positioning pin are respectively aligned with the two pairs of the guide positioning holes, and in the pressed state, the second positioning pin passes through the avoidance hole and is inserted into the corresponding guide positioning hole arrangement; The surrounding mounting holes on the upper reference plate are waist-shaped holes; There are four compression springs, which are arranged at four corners of a rectangle.

2. A precise plastic part feeding mechanism according to claim 1, characterized in that: The number of the second guide pins is four, and the four second guide pins are arranged at the four corners of a rectangle.

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