A multi-rivet rod riveting press with adjustable rivet rod positions

Abstract

The present invention provides a multi-riveting rod riveting press with adjustable rivet rod positions, comprising a riveting press head, the riveting press head comprising a second motor, a housing, a pinion, two large gear spline sleeves, two spline crankshafts, an upper template, a lower template, a plurality of rivet rods, an oil cylinder and a piston; the output shaft of the second motor extends into the housing and is connected with the pinion key, the upper end of each of the spline crankshafts is matched with the inner ring of a large gear spline sleeve, the outer rings of the gear parts of the two large gear spline sleeves are respectively meshed with the pinion, the oil cylinder is installed in the housing, the piston is matched with the oil cylinder clearance, the piston is matched with the middle part of the spline crankshaft, the upper end of the upper template is matched with the lower end of the spline crankshaft, the lower end of the upper template is in contact with the upper end spherical pair of the rivet rod, and the lower template is matched with the lower end of the rivet rod. The riveting press provided by the present invention has wide application, simple structure, strong process applicability and low cost, and can effectively improve the riveting efficiency.

Description

Technical Field

[0001] The invention belongs to the field of riveting equipment, and in particular relates to a multi-riveting rod riveting press with adjustable rivet rod positions. Background Art

[0002] Riveting technology is a traditional way of connecting components. With the continuous improvement of various material structural performance requirements and component sealing performance, a variety of riveting technologies such as sealed riveting, special riveting and plastic heat riveting have been developed based on ordinary riveting technology. The tools used for riveting are also constantly improved and improved. Compared with other connection methods, riveting has the advantages of simple process, stable connection, simple operation, convenient quality inspection, and easy troubleshooting.

[0003] The riveting machine is a new type of riveting equipment developed based on the principle of cold rolling, that is, a mechanical device that can rivet objects together with rivets. The equipment has a compact structure, stable performance, and convenient and safe operation. The riveting machine mainly relies on rotation and pressure to complete the assembly. It is mainly used in occasions where rivets (hollow rivets, hollow rivets, solid rivets, etc.) are required. Common riveting machines are divided into pneumatic, hydraulic and electric according to the driving mode, and the specifications include single-head and double-head.

[0004] Existing riveting machines usually use multiple power heads or multiple single machines to work in combination when performing multi-point riveting. When using multiple power heads, they can only be used as special machines. Not only are the structures complex and the process applicability poor, but they are still unable to complete riveting for riveting points that are closely spaced. When using multiple single machines to work in combination, the cost is relatively high. Summary of the invention

[0005] In view of this, the present invention provides a multi-rivet rod riveting press with adjustable rivet rod positions. The positions of the rivet rods can be arbitrarily arranged on the lower template, and relatively close rivet points can also be riveted, with low cost.

[0006] The present invention provides a multi-rivet-rod riveting machine with adjustable rivet-rod positions, comprising a riveting machine head, wherein the riveting machine head comprises a second motor, a housing, a pinion, two large gear spline sleeves, two spline crankshafts, an upper template, a lower template, a plurality of rivet rods, an oil cylinder and a piston; the output shaft of the second motor extends into the housing and is key-connected with the pinion, the upper end of each of the spline crankshafts is matched and connected with the inner ring of a large gear spline sleeve, the outer rings of the gear parts of the two large gear spline sleeves are respectively meshed with the pinion, the oil cylinder is installed in the housing, the piston is gap-matched with the oil cylinder, the piston is matched and connected with the middle part of the spline crankshaft, the upper end of the upper template is matched and connected with the lower end of the spline crankshaft, the lower end of the upper template is in contact with the upper end spherical pair of the rivet rod, and the lower template is matched and connected with the lower end of the rivet rod.

[0007] Furthermore, the upper end of the lower template is connected to a connecting plate, the lower end of the connecting plate is fixedly connected to the lower template, and the upper end of the connecting plate is cooperatively connected to the spline crankshaft.

[0008] Furthermore, two fifth bearing holes are provided at the upper end of the connecting plate, a third single-row ball bearing is installed in each of the fifth bearing holes, and the inner ring of each third single-row ball bearing is connected with the spline crankshaft.

[0009] Furthermore, three sixth bearing holes are provided on the lower template, and a joint ball bearing is installed in each of the sixth bearing holes, and the joint ball bearing is cooperatively connected with the lower end of the rivet rod.

[0010] Furthermore, two first bearing holes are provided at the upper end of the shell, a first double-row ball bearing is installed in each first bearing hole, and the inner ring of each first double-row ball bearing is matched and connected with the outer ring of the spline shaft of a large gear spline sleeve.

[0011] Furthermore, two second bearing holes and two third bearing holes are sequentially opened in the piston from top to bottom, a first single-row ball bearing is installed in each second bearing hole, a second double-row ball bearing is installed in each third bearing hole, and the inner ring of each first single-row ball bearing and the inner ring of each second double-row ball bearing are both matched and connected with the middle part of the spline crankshaft.

[0012] Furthermore, two fourth bearing holes are opened at the upper end of the upper template, and a second single-row ball bearing is installed in each of the fourth bearing holes. The inner ring of each second single-row ball bearing is matched and connected with the lower end of the spline crankshaft. Three rivet rod holes are opened at the lower end of the upper template, and the rivet rod holes are in contact with the upper end spherical pair of the rivet rod.

[0013] Furthermore, a locking nut is sleeved on the outer side of each spline crankshaft.

[0014] The present invention has the following beneficial effects: the overall equipment has wide application range, simple structure, strong process applicability and low cost, and can effectively improve the riveting efficiency; the number and positions of the rivet rods can be arbitrarily arranged on the lower template. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 The present invention is a schematic diagram of the overall structure of a multi-rivet rod riveting press with adjustable rivet rod positions.

[0016] Figure 2 The present invention is a schematic structural diagram of a riveting press head of a multi-riveting-rod riveting press with adjustable rivet-rod positions.

[0017] Figure 3 The present invention is a schematic diagram of installing rivet rods of a multi-rivet rod riveting press with adjustable rivet rod positions. DETAILED DESCRIPTION

[0018] To make the objectives, technical solutions and advantages of the present invention more clear, the embodiments of the present invention will be further described below with reference to the accompanying drawings.

[0019] Please refer to Figure 2 The embodiment of the present invention provides a multi-riveting rod riveting press with adjustable rivet rod positions, including a first motor 1, a lifting bolt 2, a machine body 3, a hydraulic pump station 4, a foot switch 5, a machine base 6, a lifting handle 7, a dovetail guide rail 8, a lifting workbench 9, a workpiece fixture 10 and a riveting press head 11. The first motor 1 and the lifting bolt 2 are both installed on the machine body 3. The lifting bolt 2 is mainly for the convenience of installation and debugging. The hydraulic pump station 4 is arranged on the right side of the machine body 3. The dovetail guide rail 8, the foot switch 5 and the lifting handle 7 are all arranged on the machine base 6. The foot switch 5 is connected to the electronic control part of the spinning machine to facilitate the operator to control the equipment. The machine base 6 is in contact with the ground. The lifting workbench 9 is connected to the lifting handle 7 through a thread. The lifting handle 7 is used to control the lifting of the lifting workbench 9 along the dovetail guide rail 8. The workpiece fixture 10 is installed on the lifting workbench 9 for centering and can be adjusted according to different parts.

[0020] refer to Figure 1 The riveting press head 11 includes a second motor 12, a housing 13, a pinion 14, two large gear spline sleeves 15, two spline crankshafts 16, an upper mold plate 17, a lower mold plate 18, a plurality of rivet rods 19, a cylinder 20 and a piston 21.

[0021] The second motor 12 is arranged above the shell 13, and the output shaft of the second motor 12 extends into the shell 13 and is key-connected with the pinion 14. The upper end of each spline crankshaft 16 is matched and connected with the inner ring of a large gear spline sleeve 15, and the outer rings of the gear parts of the two large gear spline sleeves 15 are respectively meshed with the pinion 14. Two first bearing holes 131 are opened at the upper end of the shell 13, and a first double-row ball bearing 132 is installed in each first bearing hole 131. The inner ring of each first double-row ball bearing 132 is matched and connected with the outer ring of the spline shaft of a large gear spline sleeve 15.

[0022] The oil cylinder 20 is installed in the housing 13 by bolts, and the piston 21 is in clearance fit with the oil cylinder 20. The piston 21 can reciprocate linearly in the oil cylinder 20. A cylinder cover 27 connected to the oil cylinder 20 by bolts is provided on the oil cylinder 20.

[0023] Two second bearing holes 211 and two third bearing holes 212 are sequentially provided in the piston 21 from top to bottom, a first single-row ball bearing 213 is installed in each second bearing hole 211, and a second double-row ball bearing 214 is installed in each third bearing hole 212, the inner ring of each first single-row ball bearing 213 and the inner ring of each second double-row ball bearing 214 are both connected with the middle part of the spline crankshaft 16, and the lower side of the piston 21 is connected with the adjusting nut 26, and the displacement of the piston 21 is adjusted by adjusting the nut 26, and the control accuracy is within 0.02mm; sealing grooves are respectively provided at the upper and lower ends of the piston 21, and sealing rings 215 are placed in the sealing grooves to achieve sealing, and the sealing ring 215 is made of wear-resistant and high-temperature resistant materials; in this embodiment, the hydraulic pump station 4 provides a power source for the movement of the piston 21, and the foot switch 5 is used to control the up and down movement of the piston 21.

[0024] In this embodiment, a locking nut 22 is sleeved on the outer side of each spline crankshaft 16. The locking nut 22 is located above the first single-row ball bearing 213 and is used to limit the axial movement of the spline crankshaft 16 to prevent the spline crankshaft 16 from deviating upward when rotating.

[0025] refer to Figure 2 and Figure 3 The upper template 17 is located below the piston 21. Two fourth bearing holes 171 are provided at the upper end of the upper template 17. A second single-row ball bearing 172 is installed in each of the fourth bearing holes 171. The inner ring of each second single-row ball bearing 172 is matched and connected with the lower end of the spline crankshaft 16. Three rivet rod holes 173 are provided at the lower end of the upper template 17. The rivet rod holes 173 are in contact with the upper end spherical pair of the rivet rod 19.

[0026] The upper end of the lower template 18 is connected to a connecting plate 23, and the lower end of the connecting plate 23 is integrally connected to the lower template 18. The upper end of the connecting plate 23 is located above the upper template 17. Two fifth bearing holes 231 are opened at the upper end of the connecting plate 23, and a third single-row ball bearing 232 is installed in each of the fifth bearing holes 231. The inner ring of each third single-row ball bearing 232 is matched and connected with the spline crankshaft 16. Three sixth bearing holes 181 are opened on the lower template 18, and a joint ball bearing 182 is installed in each of the sixth bearing holes 181. The joint ball bearing 182 is matched and connected with the lower end of the rivet rod 19.

[0027] A circular dial 24 and an inner dial 25 are connected below the housing 13. The circular dial 24 and the inner dial 25 are threadedly connected. The inner dial 25 and the cylinder cover 27 are bolted. The circular dial 24 contacts the lower end of the adjusting nut 26. The circular dial 24 and the inner dial 25 are threadedly adjusted.

[0028] The working process of the multi-rivet rod riveting press provided in this embodiment is as follows: after the second motor 12 is started, it drives the small gear 14 to rotate, and after the small gear 14 rotates, it drives the large gear spline sleeve 15 to rotate, and after the large gear spline sleeve 15 rotates, it drives the spline crankshaft 16 to rotate at a constant speed, and after the spline crankshaft 16 rotates at a constant speed, it drives the rivet rod 19 to rotate at a constant speed around the axis of the rivet rod 19; after the oil cylinder 20 is hydraulically driven, the piston 21 moves downward along the oil cylinder 20, thereby driving the spline crankshaft 16, the upper template 17, the lower template 18, the connecting plate 23, and the rivet rod 19 to be pressed down together to complete the riveting.

[0029] The riveting press provided by the present invention has wide overall application, simple structure, strong process applicability and low cost.

[0030] In this document, the directional words such as front, back, top, and bottom are defined by the positions of the components in the drawings and the positions of the components relative to each other, and are only for the sake of clarity and convenience in expressing the technical solution. It should be understood that the use of the directional words should not limit the scope of protection claimed in this application.

[0031] In the absence of conflict, the above embodiments and features in the embodiments may be combined with each other.

[0032] 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 spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A multi-rivet rod riveting press with adjustable rivet rod positions, characterized in that: It comprises a riveting press head, which comprises a second motor, a housing, a pinion, two large gear spline sleeves, two spline crankshafts, an upper template, a lower template, a plurality of rivet rods, an oil cylinder and a piston; the output shaft of the second motor extends into the housing and is connected with the pinion key, the upper end of each of the spline crankshafts is matched and connected with the inner ring of a large gear spline sleeve, the outer rings of the gear parts of the two large gear spline sleeves are respectively meshed with the pinion, the oil cylinder is installed in the housing, the piston is matched with the oil cylinder clearance, the piston is matched and connected with the middle part of the spline crankshaft, the upper end of the upper template is matched and connected with the lower end of the spline crankshaft, the lower end of the upper template is in contact with the upper end spherical pair of the rivet rod, and the lower template is matched and connected with the lower end of the rivet rod; The upper end of the lower template is connected to a connecting plate, the lower end of the connecting plate is fixedly connected to the lower template, and the upper end of the connecting plate is cooperatively connected to the spline crankshaft; The lower template is provided with three sixth bearing holes, each of which is equipped with a joint ball bearing, and the joint ball bearing is matched and connected with the lower end of the rivet rod.

2. The multi-rivet rod riveting press with adjustable rivet rod positions according to claim 1, characterized in that: Two fifth bearing holes are arranged at the upper end of the connecting plate, a third single-row ball bearing is installed in each of the fifth bearing holes, and the inner ring of each third single-row ball bearing is matched and connected with the spline crankshaft.

3. The multi-rivet rod riveting press with adjustable rivet rod positions according to claim 1, characterized in that: Two first bearing holes are arranged at the upper end of the shell, and a first double-row ball bearing is installed in each first bearing hole. The inner ring of each first double-row ball bearing is matched and connected with the outer ring of the spline shaft of a large gear spline sleeve.

4. The multi-rivet-rod riveting press with adjustable rivet-rod positions according to claim 1, characterized in that: Two second bearing holes and two third bearing holes are sequentially opened in the piston from top to bottom, a first single-row ball bearing is installed in each second bearing hole, a second double-row ball bearing is installed in each third bearing hole, and the inner ring of each first single-row ball bearing and the inner ring of each second double-row ball bearing are matched and connected with the middle part of the spline crankshaft.

5. The multi-rivet-rod riveting press with adjustable rivet-rod positions according to claim 1, characterized in that: Two fourth bearing holes are provided at the upper end of the upper template, and a second single-row ball bearing is installed in each of the fourth bearing holes. The inner ring of each second single-row ball bearing is matched and connected with the lower end of the spline crankshaft. Three rivet rod holes are provided at the lower end of the upper template, and the rivet rod holes are in contact with the upper end spherical pair of the rivet rod.

6. The multi-rivet-rod riveting press with adjustable rivet-rod positions according to claim 1, characterized in that: A locking nut is sleeved on the outer side of each spline crankshaft.

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