Riveting nut mechanism

Abstract

The utility model discloses a nut riveting mechanism which enables nuts on the two sides of a part to be riveted quickly and efficiently and improves the machining efficiency of the part. The upper die assembly comprises an upper die plate, an upper die base and an upper pressing plate; the lower die assembly comprises a bottom plate, a lower die base and a lower die plate, the lower die plate is fixedly installed on the upper surface of the lower die base, the lower die plate and the center area of the lower die base are combined to form a cavity, supporting strips are arranged on the two side edges, corresponding to the cavity, of the lower die plate, and the side edge, provided with the riveting nut, of the part is located and supported on the upper surfaces of the supporting strips. Nut positioning grooves are formed in the positions, corresponding to riveting nuts, of the supporting strips, the outer side of each nut positioning groove is communicated with a nut discharging channel through a guide groove, the nut discharging channels are vertically arranged, the guide grooves extend outwards, the outer end of each guide groove is provided with a plug-in mounting piston, and the plug-in mounting pistons are inserted into the nut discharging channels. The plug-in mounting piston pushes the nut under the nut discharging channel to the nut positioning groove along the guide groove.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile parts assembly, in particular to a riveting nut mechanism. Background Art

[0002] Automobile parts structure Figure 1 It is necessary to rivet several nuts arranged at intervals on both sides of the part. In the prior art, several nuts are placed in the corresponding cavities of the lower mold cavity for placing nuts in sequence, and then the product is placed in, and the punch start button is pressed. The punch is pressed down to complete the riveting of the parts and nuts. Since the nuts need to be placed in sequence, the efficiency of the entire processing process is low. Therefore, it is urgently necessary to develop a mechanism to improve the efficiency of nut riveting. Summary of the invention

[0003] In view of the above problems, the utility model provides a riveting nut mechanism, which makes the nuts on both sides of the parts riveted quickly and efficiently, thereby improving the processing efficiency of the parts.

[0004] The riveting nut mechanism is characterized in that it comprises:

[0005] An upper die assembly, comprising an upper die plate, an upper die base, and an upper pressing plate;

[0006] and a lower die assembly, which includes a bottom plate, a lower die seat, and a lower die plate, wherein the lower die plate is fixedly mounted on the upper surface of the lower die seat, the central area of ​​the lower die plate and the lower die seat is combined to form a cavity, the lower die plate is provided with support strips on both sides corresponding to the cavity, the side of the part provided with a riveted nut is positioned and supported on the upper surface of the support strip, and a nut positioning groove is provided at a position of the support strip corresponding to the riveted nut, the outer side of each of the nut positioning grooves is connected to a nut discharge channel through a guide groove, the nut discharge channel is arranged vertically, the guide groove is extended outward, an insert piston is arranged at the outer end of each of the guide grooves, and the insert piston pushes the nut directly below the nut discharge channel to the nut positioning groove along the guide groove;

[0007] A downwardly protruding riveting punch is fixedly disposed on the lower part of the upper pressing plate corresponding to the upper part of each nut positioning groove;

[0008] Each of the inserted pistons arranged on both sides is driven by an independent push cylinder.

[0009] It is further characterized by:

[0010] It includes two rows of bins, each row of bins is provided with a vertical channel corresponding to the position of the nut discharge channel, the nut discharge channel is vertically inserted into the corresponding vertical channel, all the nut discharge channels have the same height, and the same number of nuts stacked in height are placed;

[0011] The lower template is also provided with guide cylindrical cavities at the four corners corresponding to the cavity, and the upper pressing plate is provided with a lower convex guide column at the position corresponding to each guide cylindrical cavity, which ensures that the pressing position is stable and reliable;

[0012] An auxiliary limit block is also provided on the outer side of the upper surface of the support bar, and the inner side of the auxiliary limit block is used to limit the corresponding side position of the part to ensure stable and reliable positioning of the part;

[0013] The outer sides of the lower template corresponding to the silos on both sides are also provided with auxiliary pressure blocks and connecting blocks. The auxiliary pressure blocks are used to make the outer guide grooves, and the connecting blocks are used to fix the pushing cylinder. The output end of the pushing cylinder is fixedly connected to the plug-in piston in the guide groove through the pushing mechanism.

[0014] After adopting the above technical scheme, first fill the nut discharge channel with nuts and put them into the corresponding positions respectively; after putting the parts in so that the parts are positioned in the cavity, synchronously drive the push cylinder to cooperate with each nut positioning groove to feed the nut, and then the push cylinder drives the insertion piston to retract, and when the punch start button is pressed, the upper die is pressed down with the punch, and the riveting punch contacts the product and the nut to complete the riveting action, and then the punch drives the upper die assembly to move to the top dead point, and takes out the parts with riveted nuts, and the cycle is repeated in sequence; it makes the riveting of nuts on both sides of the parts quick and efficient, and improves the processing efficiency of the parts. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;

[0016] Figure 2 A three-dimensional diagram of the lower mold assembly of the utility model;

[0017] Figure 3 A three-dimensional diagram of the upper mold assembly of the utility model;

[0018] The names corresponding to the serial numbers in the figure are as follows:

[0019] Part 1, side 101, support block 2, avoidance notch 3, positioning column 4;

[0020] Upper die assembly 10, lower die assembly 20, upper template 30, upper die base 40, upper pressure plate 50, guide column 51, bottom plate 60, lower die base 70, lower template 80, support bar 81, nut positioning groove 82, guide groove 83, guide cylindrical cavity 84, auxiliary limit block 85, cavity 90, nut discharge channel 100, insert piston 110, riveting punch 120, push cylinder 130, silo 140, vertical channel 141, auxiliary pressure block 150, connecting block 160, push mechanism 170. DETAILED DESCRIPTION

[0021] Each long side of the part 1 is provided with three rivet nuts spaced apart along the length direction. The rivet nut mechanism actually processed is shown in FIG. Figure 1-Figure 3 : It includes an upper mold assembly 10 and a lower mold assembly 20;

[0022] The upper mold assembly 10 includes an upper mold plate 30, an upper mold base 40, and an upper pressing plate 50;

[0023] The lower die assembly 20 includes a bottom plate 60, a lower die seat 70, and a lower die plate 80. The lower die plate 80 is fixedly mounted on the upper surface of the lower die seat 70. The central areas of the lower die plate 80 and the lower die seat 70 are combined to form a cavity 90. The lower die plate 80 is provided with support bars 81 on both sides corresponding to the cavity 90. The part 1 is provided with a side 101 for riveting nuts, which is positioned and supported on the upper surface of the support bar 81. The support bar 81 is provided with a nut positioning groove 82 at a position corresponding to the riveting nut. The outer side of each nut positioning groove 82 is connected to a nut discharge channel 100 through a guide groove 83. The nut discharge channel 100 is arranged vertically, and the guide groove 83 is extended outward. An insert piston 110 is arranged at the outer end of each guide groove 83. The insert piston 110 pushes the nut directly below the nut discharge channel 100 to the nut positioning groove 82 along the guide groove 83.

[0024] A downward-convex riveting punch 120 is fixedly arranged at the lower part of the upper pressure plate 50 corresponding to the upper part of each nut positioning groove 82; that is, six groups of downward-convex riveting punches 120 are fixedly arranged on both sides of the upper pressure plate by fasteners, and the inserted pistons 110 arranged on both sides are driven by independent pushing cylinders 130 respectively.

[0025] In a specific implementation, two rows of bins 140 are included, and each row of bins 140 is provided with a vertical channel 141 corresponding to the position of the nut discharge channel 100, and the nut discharge channel 100 is vertically inserted into the corresponding vertical channel 141, and all the nut discharge channels 100 have the same height and are provided with the same number of nuts stacked in the height direction;

[0026] The lower mold plate 80 is also provided with guide cylindrical cavities 84 at the four corners corresponding to the mold cavity 90, and the upper pressing plate 50 is provided with a lower convex guide column 51 at the position corresponding to each guide cylindrical cavity, which ensures that the pressing position is stable and reliable;

[0027] An auxiliary limiting block 85 is also provided on the outer side of the upper surface of the support bar 81 , and the inner side of the auxiliary limiting block 85 is used to limit the corresponding side position of the part 1 to ensure that the positioning of the part 1 is stable and reliable.

[0028] During specific implementation, auxiliary pressure blocks 150 and connecting blocks 160 are further provided on the outer sides of the lower template 80 corresponding to the silos 140 on both sides. The auxiliary pressure blocks 150 are used to make the outer guide grooves 83, and the connecting blocks 160 are used to fix the pushing cylinder 130. The output end of the pushing cylinder 130 is fixedly connected to the inserted piston 110 in the guide groove 83 through the pushing mechanism 170.

[0029] During specific implementation, the upper pressure plate 50 and the upper die seat 40 are provided with avoidance notches 3 corresponding to the positions of the nut discharge channel 100, and the upper surface of the lower template 80 is provided with positioning columns 4 corresponding to the positions of the positioning holes of the part 1, and the two short sides of the lower template 80 are provided with upper convex support blocks 2, which are used to reliably support the short sides of the part 1 at both ends.

[0030] The working principle is as follows: first fill the nut discharge channel with nuts and put them into the corresponding positions respectively; after putting the parts in so that the parts are positioned in the cavity, synchronously drive the push cylinder to cooperate with each nut positioning groove to feed the nut, and then the push cylinder drives the insertion piston to retract, and when the punch start button is pressed, the upper die is pressed down with the punch, and the riveting punch contacts the product and the nut to complete the riveting action, and then the punch drives the upper die assembly to move to the top dead point, and takes out the parts with riveted nuts, and the cycle is repeated in sequence; it makes the nuts on both sides of the parts riveted quickly and efficiently, and improves the processing efficiency of the parts.

[0031] It is obvious 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 present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

[0032] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description 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 may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A riveting nut mechanism, characterized in that: It includes: An upper die assembly, comprising an upper die plate, an upper die base, and an upper pressing plate; and a lower die assembly, which includes a bottom plate, a lower die seat, and a lower die plate, wherein the lower die plate is fixedly mounted on the upper surface of the lower die seat, the central area of ​​the lower die plate and the lower die seat is combined to form a cavity, the lower die plate is provided with support strips on both sides corresponding to the cavity, the side of the part provided with a riveted nut is positioned and supported on the upper surface of the support strip, and a nut positioning groove is provided at a position of the support strip corresponding to the riveted nut, the outer side of each of the nut positioning grooves is connected to a nut discharge channel through a guide groove, the nut discharge channel is arranged vertically, the guide groove is extended outward, an insert piston is arranged at the outer end of each of the guide grooves, and the insert piston pushes the nut directly below the nut discharge channel to the nut positioning groove along the guide groove; A downwardly protruding riveting punch is fixedly disposed on the lower part of the upper pressing plate corresponding to the upper part of each nut positioning groove; Each of the inserted pistons arranged on both sides is driven by an independent push cylinder.

2. The riveting nut mechanism according to claim 1, characterized in that: It includes two rows of silos, each row of silos is provided with a vertical channel corresponding to the position of the nut discharge channel, the nut discharge channel is vertically inserted in the corresponding vertical channel, all the nut discharge channels have the same height and hold the same number of nuts stacked in the height direction.

3. The riveting nut mechanism according to claim 1, characterized in that: The lower template is also provided with guide cylindrical cavities corresponding to the four corners of the cavity, and the upper pressing plate is provided with a lower convex guide column at the position corresponding to each guide cylindrical cavity.

4. The riveting nut mechanism according to claim 1, characterized in that: An auxiliary limiting block is also arranged on the outer side of the upper surface of the supporting bar, and the inner side of the auxiliary limiting block is used to limit the corresponding side position of the part.

5. The riveting nut mechanism according to claim 1, characterized in that: The outer sides of the lower template corresponding to the silos on both sides are also provided with auxiliary pressure blocks and connecting blocks. The auxiliary pressure blocks are used to make the outer guide grooves, and the connecting blocks are used to fix the pushing cylinder. The output end of the pushing cylinder is fixedly connected to the plug-in piston in the guide groove through the pushing mechanism.

Images