CN116372085A

CN116372085A - Automatic riveting equipment

Info

Publication number: CN116372085A
Application number: CN202310216327.1A
Authority: CN
Inventors: 江红军; 陈皓博; 陈路平; 陈剑伦
Original assignee: Ningbo Colet Electrical Appliance Co ltd
Current assignee: Ningbo Colet Electrical Appliance Co ltd
Priority date: 2023-03-08
Filing date: 2023-03-08
Publication date: 2023-07-04

Abstract

The invention discloses automatic riveting equipment, which comprises a positioning mechanism, a riveting mechanism and a distribution mechanism, wherein the positioning mechanism comprises a positioning frame, a left unit block and a right unit block, at least one unit block is slidably arranged on the positioning frame, floating core positioning components are arranged on the outer sides of the two unit blocks, each floating core positioning component comprises a cylinder body and a floating core column, the floating core column is provided with a ball head part, the outer end surface of the cylinder body is provided with a groove opening, the floating core column is provided with a piston, and the cylinder body is provided with a first joint and a second joint; the output end of the riveting mechanism is provided with a joint pipe, a pushing channel and a feeding channel communicated with the pushing channel are arranged in the joint pipe, the outer end of the feeding channel is connected with the distribution mechanism through a hose, the rivet is extruded to be propped against the floating core column through a servo pressure head of the riveting mechanism, and after the rivet contacts with the floating core column, the rivet is continuously subjected to the thrust of the servo pressure head so that the rivet and the floating core column synchronously move to a riveting position to be riveted, so that the positioning mechanism and the riveting mechanism are prevented from interfering.

Description

Automatic riveting equipment

Technical Field

The invention relates to the technical field of riveting equipment, in particular to automatic riveting equipment.

Background

The novel riveting equipment is developed according to the cold rolling principle, namely mechanical equipment capable of riveting articles by rivets, and the novel riveting equipment is compact in structure, stable in performance and convenient and safe to operate.

The existing riveting equipment comprises an action end and a pressure-bearing end, before riveting, a workpiece is placed between the action end and the pressure-bearing end and is positioned through a positioning mechanism, the action end pushes a rivet into a workpiece riveting hole and presses the rivet towards the pressure-bearing end to realize riveting, for example, when a child dinning chair is riveted, armrests on two sides need to be pre-installed on a dinning chair body consisting of a seat and a backrest, and the armrests are riveted to two sides of the dinning chair body through the riveting equipment, but the existing riveting equipment has the following problems:

1. before riveting the dining chair body, the positioning mechanism is required to be arranged in the inner space of the dining chair body so as to position the dining chair body, and meanwhile, the pressure-bearing end or the action end of the riveting equipment is required to be arranged in the inner space of the dining chair body;

2. the existing pressure-bearing end comprises a telescopic rod and a spring piece for driving the telescopic rod to reset, the acting end of the riveting equipment pushes the rivet into the riveting hole, the inner end of the rivet is propped against the telescopic rod and then is continuously subjected to thrust of the acting end so as to carry out riveting operation, the inner end of the telescopic rod is provided with a spring, the spring is continuously extruded after the telescopic rod is continuously pressed in the riveting process, and then the spring is easily damaged;

there is a need for an improvement to existing riveting equipment that meets the riveting requirements of child dinning chairs.

Disclosure of Invention

The invention aims to provide automatic riveting equipment, two unit blocks are matched to play a role in positioning a workpiece, the end faces of groove openings of the two unit blocks and a floating core column have a role in bearing ends, so that interference between a positioning mechanism and a riveting mechanism is avoided, and on the other hand, the displacement of the floating core column is controlled pneumatically, so that a spring is omitted, and the problem that the spring is damaged in the riveting process is solved.

The technical aim of the invention is realized by the following technical scheme: the automatic riveting equipment comprises a positioning mechanism, a riveting mechanism and a distribution mechanism, wherein the positioning mechanism comprises a positioning frame, a left unit block and a right unit block, at least one unit block is transversely and slidably arranged on the positioning frame and can be switched between a clamping position extending out of the positioning frame and a retracting position retracting back into the positioning frame, so that the two unit blocks are matched with and clamp a workpiece, a floating core positioning assembly is arranged on the outer sides of the two unit blocks and comprises a cylinder body and a floating core column, the floating core column can be switched between a material abutting position extending out of the cylinder body and a riveting position retracting back into the cylinder body, the outer end of the floating core column is provided with a bulb part, the outer end face of the cylinder body is provided with a groove opening with the outer diameter larger than the outer diameter of the bulb part, the floating core column is provided with a piston for dividing the inner cavity of the cylinder body into a first cavity and a second cavity, and the cylinder body is provided with a first joint communicated with the first cavity and a second joint communicated with the second cavity; the riveting mechanism is symmetrically arranged on two sides of the positioning mechanism, the output end of the riveting mechanism is provided with a joint pipe, a pushing channel and a feeding channel communicated with the pushing channel are arranged in the joint pipe, the outer end of the feeding channel is connected with the distribution mechanism through a hose, the distribution mechanism utilizes compressed gas to blow the rivets to the feeding channel one by one, the rivets are extruded to be propped against the floating core column through a servo pressure head of the riveting mechanism, and after the rivets are contacted with the floating core column, the rivets are continuously subjected to the thrust of the servo pressure head so that the rivets and the floating core column synchronously move to a riveting position to be riveted.

Further, still include the plummer, the plummer is including being vertical face and the inclined plane that the acute angle set up to make the work piece can fall to put to the plummer, two unit pieces slidable set up on the plummer, two unit pieces pass through the extension spring to be connected, be equipped with the drive unit that drives two unit pieces outwards move towards both sides on the plummer.

Further, the drive unit includes the drive block that sets up between two unit blocks and drives the drive cylinder of the vertical lift of drive block, the both ends of drive block are equipped with respectively towards the guide surface A that is close to drive cylinder one side and widen, and when the cylinder promotes the drive block output, the drive block drives left unit block and right unit block through guide surface A and keeps away from each other.

Further, the riveting machine further comprises a supporting frame and a bearing table, wherein the bearing table is placed at the bottom of the supporting frame, the positioning frame is arranged on the supporting frame in a lifting manner, a lifting assembly for driving the positioning frame to vertically lift is arranged on the supporting frame, before riveting, a workpiece is placed on the bearing table, and the lifting assembly drives the positioning frame to move downwards to a positioning space of the workpiece so as to position the workpiece.

Further, the left unit block and the right unit block are connected through a tension spring, a driving unit for driving the two unit blocks to move outwards towards two sides is arranged on the bearing table, and a positioning unit for fixing the unit blocks moving to the outer end is arranged on the positioning frame.

Further, a sealing plug is installed at the rear end of the cylinder body, a jacking column is connected to the inner sides of the two unit blocks in a threaded mode, and the position of the sealing plug in the cylinder body is adjusted through screwing the jacking column.

Further, the distribution mechanism comprises a distributor, the number of the discharge ports of the distributor corresponds to that of the joint pipes, and the discharge ports of the distributor are connected with the feed channels of the corresponding joint pipes through hoses.

Further, the riveting mechanism comprises a servo riveting machine, a guide pipe is arranged at the output end of the servo riveting machine, a joint pipe is connected to the other end of the guide pipe, and a servo pressure head of the servo riveting machine can transversely move along the guide pipe to drive the rivet to move towards the riveting position and rivet the rivet.

Further, the outside of two unit blocks is the clamping end, the clamping end includes bellying, vertical portion and connecting portion, be equipped with the installation cavity that transversely sets up respectively on bellying and the vertical portion, every installation intracavity all is equipped with and floats core locating component, riveting mechanism and the one-to-one of floating core locating component.

Further, a transversely arranged sliding rail is arranged on the positioning frame, and the slidable unit block is slidably arranged on the sliding rail through a sliding block.

In summary, the invention has the following beneficial effects:

1. the two unit blocks are matched, so that the function of positioning a workpiece can be realized, and meanwhile, the end faces of the groove openings of the two unit blocks and the floating core column have the function of bearing ends, so that the interference of a positioning mechanism and a riveting mechanism is avoided;

2. the displacement of the floating core column is controlled through pneumatic control, so that a spring is omitted, namely, a first connector communicated with the first cavity and a second connector communicated with the second cavity are arranged on the cylinder body, the displacement of the floating core column is controlled through the cooperation of inflation and deflation of the first connector and the connector, and the problem that the spring is damaged in the riveting process is solved.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention.

Fig. 2 is a cross-sectional view of the present invention.

Fig. 3 is an enlarged view of the invention at a.

FIG. 4 is a schematic structural view of the floating core positioning assembly of the present invention.

Fig. 5 is a schematic structural view of the positioning mechanism of the present invention when the positioning mechanism is floating.

Fig. 6 is a cross-sectional view of the positioning mechanism of the present invention in a floating state.

Fig. 7 is a schematic front view of the positioning mechanism of the present invention in a fixed type.

Fig. 8 is an enlarged view of the invention at B.

Fig. 9 is a schematic view of the back structure of the positioning mechanism of the present invention when the positioning mechanism is stationary.

Fig. 10 is a schematic structural view of the dispensing mechanism of the present invention.

Fig. 11 is an enlarged view at C of the present invention.

FIG. 12 is a schematic view of the rivet of the present invention in a feed channel.

In the figure: 1. a positioning mechanism; 11. a positioning frame; 12. a left unit block; 13. a right cell block; 14. a floating core positioning assembly; 141. a cylinder body; 1411. sealing the plugs; 1412. a top column; 142. a floating stem; 1421. a ball head portion; 1422. a groove opening; 143. a piston; 144. a first joint; 145. a second joint; 15. a tension spring; 16. a driving unit; 161. a driving block; 1611. a guide surface A; 162. a driving cylinder; 163. a cam; 164. a motor; 17. a slide rail; 171. a slide block; 18. a positioning unit; 181. a positioning rod; 182. positioning a cylinder; 2. a riveting mechanism; 21. a joint pipe; 211. a pushing channel; 212. a feed channel; 22. a servo ram; 23. a servo riveter; 3. a dispensing mechanism; 31. a dispenser; 4. a rivet; 5. a carrying platform; 6. a support frame; 61. a lifting assembly; 62. a guide rod; 63. a slip plate; 7. a workpiece.

Detailed Description

The invention is further described below with reference to the accompanying drawings.

As shown in fig. 1-12, an automatic riveting device comprises a positioning mechanism 1, a riveting mechanism 2, a distributing mechanism 3 and a bearing platform 5, wherein the bearing platform 5 is used for supporting a workpiece 7, and the workpiece 7 is exemplified as a child dining chair in the invention.

The positioning mechanism 1 comprises a positioning frame 11, a left unit block 12 and a right unit block 13, wherein at least one unit block is transversely and slidably arranged on the positioning frame 11 and can be switched between a clamping position extending out of the positioning frame 11 and a retracting position retracting back into the positioning frame 11, so that the two unit blocks are matched with and clamp a workpiece 7, specifically, a transversely arranged sliding rail 17 is arranged on the positioning frame 11, and the slidably unit blocks are slidably arranged on the sliding rail 17 through sliding blocks 171.

The clamping ends of the two unit blocks are provided with floating core positioning assemblies 14, each floating core positioning assembly 14 comprises a cylinder body 141 and a floating core column 142, each floating core column 142 can be switched between a material abutting position extending out of the cylinder body 141 and a riveting position retracting back into the cylinder body 141, the outer end of each floating core column 142 is provided with a ball head 1421, the outer end face of each cylinder body 141 is provided with a groove port 1422 with the outer diameter larger than that of each ball head 1421, each floating core column 142 is provided with a piston 143 for sealing and dividing the inner cavity of each cylinder body 141 into a first cavity and a second cavity, each cylinder body 141 is provided with a first joint 144 communicated with the first cavity and a second joint 145 communicated with the second cavity, and when the first joint 144 is in air and the second joint 145 is out of air, each floating core column 142 is contracted into the cylinder body 141; when the first joint 144 is vented and the second joint 145 is vented, the floating stem 142 extends out of the barrel 141.

The riveting mechanism 2 is symmetrically arranged at two sides of the positioning mechanism 1, the output end of the riveting mechanism 2 is provided with a joint pipe 21, a pushing channel 211 and a feeding channel 212 communicated with the pushing channel 211 are arranged in the joint pipe 21, the outer end of the feeding channel 212 is connected with the distribution mechanism 3 through a hose, the distribution mechanism 3 blows the rivets 4 to the feeding channel 212 one by using compressed gas, the rivets 4 are extruded to be propped against the floating core column 142 through a servo pressure head 22 of the riveting mechanism 2, the rivets 4 are continuously pushed by the servo pressure head 22 after contacting with the floating core column 142 so that the rivets 4 and the floating core column 142 synchronously move to a riveting position for riveting, one side of the rivets 4 adjacent to the notch 1422 is provided with a notch, the notch is propped against a bulb 1421 of the floating core column 142, and during riveting, the inner ends of the rivets 4 are propped against the end face of the notch 1422.

The feeding channel 212 is disposed at the upper end of the pushing channel 211 and forms an acute angle with the pushing channel 211, specifically, the feeding channel 212 forms an angle a with the pushing channel 211, wherein a is more than or equal to 20 degrees and less than or equal to 60 degrees, and through the arrangement, the rivet 4 can smoothly enter the pushing channel 211 from the feeding channel 212.

In some embodiments, as shown in fig. 7-8, the carrying platform 5 includes a vertical surface and an inclined surface that are disposed at an acute angle, so that the workpiece 7 can be placed onto the carrying platform 5 in a reverse manner, the included angle between the vertical surface and the inclined surface corresponds to the included angle between the seat and the backrest of the dining table for children, the two unit blocks are slidably disposed on the carrying platform 5, the two unit blocks are connected through a tension spring 15, and a driving unit 16 that drives the two unit blocks to move outwards towards two sides is disposed on the carrying platform 5. In this embodiment, the driving unit 16 includes a driving block 161 disposed between two unit blocks and a driving cylinder 162 for driving the driving block 161 to vertically lift, two ends of the driving block 161 are respectively provided with a guiding surface a1611 widening towards one side close to the driving cylinder 162, two sliding blocks 171 are provided with guiding surfaces B corresponding to the guiding surfaces a1611, and when the driving cylinder 162 pushes the driving block 161 to output, the driving block 161 drives the left unit block 12 and the right unit block 13 to be far away from each other through the guiding surfaces a 1611.

In some embodiments, as shown in fig. 1 to 6, the dining table further comprises a supporting frame 6, the bearing table 5 is placed at the bottom of the supporting frame 6, the positioning frame 11 is arranged on the supporting frame 6 in a lifting manner, a lifting assembly 61 for driving the positioning frame 11 to vertically lift is arranged on the supporting frame 6, before riveting, the workpiece 7 is placed on the bearing table 5, the lifting assembly 61 drives the positioning frame 11 to move down to a positioning space of the workpiece 7 to position the workpiece 7, specifically, a plurality of groups of guide rods 62 are arranged on the supporting frame 6, a sliding plate 63 is arranged on the guide rods 62, the positioning frame 11 is fixedly connected to the sliding plate 63, the output end of the lifting assembly 61 is connected to the sliding plate 63 to drive the positioning frame 11 connected to the sliding plate 63 to vertically lift, before riveting, the lifting assembly 61 drives the positioning frame 11 to move down to a seat space of the dining table body to position the dining table body, and after riveting is completed, the driving mechanism drives the positioning frame 11 to move up to release positioning of the dining table body.

In this embodiment, the left unit block 12 and the right unit block 13 are connected by a tension spring 15, the carrying table 5 is provided with a driving unit 16 for driving the two unit blocks to move outwards towards two sides, specifically, the driving unit 16 comprises a cam 163 arranged between the two unit blocks and a motor 164 for driving the cam 163 to rotate, before riveting, the motor 164 drives the cam 163 to rotate so that the cam 163 drives the slidable unit blocks to move outwards, the positioning frame 11 is provided with a positioning unit 18 for fixing the unit blocks moving to the outer end, specifically, the positioning unit 18 comprises a positioning cylinder 182 arranged on the positioning frame 11 and a positioning rod 181 connected to the output end of the positioning cylinder 182, the movable unit block is provided with a positioning hole matched with the positioning rod 181 in a positioning mode, when the positioning rod 181 extends into the positioning hole, the unit blocks are fixed at the outer side position, and when the positioning rod 181 resets and is separated from the positioning hole, the unit blocks are released to play a role of positioning two unit blocks to ensure the clamping state of the two unit blocks, and when the riveting machine block is not pressed by the motor 163, the middle of the two unit blocks are prevented from being pressed backwards and not pressed by the positioning rod 164 is not pressed when the output shaft is not pressed by the riveting machine block 11, and the output shaft is not pressed backwards

The rear end of the barrel 141 is provided with a sealing plug 1411, the inner sides of the two unit blocks are connected with a jack-up column 1412 in a threaded manner, the position of the sealing plug 1411 in the barrel 141 is adjusted by screwing the jack-up column 1412, when the positioning rod 181 is retracted into the barrel 141, the distance between the ball head 1421 and the groove port 1422 is adjusted, the front end of the barrel 141 is provided with a guide sleeve, when the floating core column 142 acts, the floating core column 142 passes through the guide sleeve and extends out of the barrel 141, and the guide sleeve plays a role in sealing and guiding.

The distributing mechanism 3 comprises a distributor 31, the number of the discharge ports of the distributor 31 corresponds to the number of the joint pipes 21, and the discharge ports of the distributor 31 are connected with the corresponding feed channels 212 of the joint pipes 21 through hoses.

The riveting mechanism 2 comprises a servo riveting machine 23, a guide pipe is arranged at the output end of the servo riveting machine 23, the other end of the guide pipe is connected with a joint pipe 21, and a servo pressure head 22 of the servo riveting machine 23 can transversely move along the guide pipe to drive the rivet 4 to move towards the riveting position and rivet the rivet 4.

The outside of two unit blocks is the clamping end, the clamping end includes bellying, vertical portion and connecting portion, be equipped with the installation cavity of horizontal setting respectively in bellying and the vertical portion, every installation intracavity all is equipped with floats core positioning component 14, riveting mechanism 2 and floats core positioning component 14 one-to-one, through being equipped with respectively in the both sides of unit block and floating core positioning component 14, can improve positioning accuracy on the one hand for the location is more stable, can improve riveting efficiency simultaneously greatly.

In summary, the invention has the following beneficial effects:

1. the two unit blocks are matched, so that the function of positioning the workpiece 7 can be realized, and meanwhile, the end surfaces of the groove ports 1422 and the floating core columns 142 of the two unit blocks have the function of bearing ends, so that the interference of the positioning mechanism 1 and the riveting mechanism 2 is avoided;

2. the displacement of the floating core column 142 is controlled pneumatically, so that a spring is omitted, namely, a first connector 144 communicated with the first cavity and a second connector 145 communicated with the second cavity are arranged on the cylinder body 141, and the displacement of the floating core column 142 is controlled through the inflation and deflation cooperation of the first connector 144 and the connector, so that the problem that the spring is damaged in the riveting process is solved.

The foregoing description is only of the preferred embodiments of the invention, and all changes and modifications that come within the meaning and range of equivalency of the structures, features and principles of the invention are therefore intended to be embraced therein.

Claims

1. An automated riveting apparatus, characterized in that: the device comprises a positioning mechanism (1), a riveting mechanism (2) and a distribution mechanism (3), wherein the positioning mechanism (1) comprises a positioning frame (11), a left unit block (12) and a right unit block (13), at least one unit block is transversely and slidably arranged on the positioning frame (11) and can be switched between a clamping position extending out of the positioning frame (11) and a retracting position retracting back into the positioning frame (11), so that the two unit blocks are matched with and clamp a workpiece (7), floating core positioning assemblies (14) are arranged on the outer sides of the two unit blocks, each floating core positioning assembly (14) comprises a cylinder body (141) and a floating core column (142), the floating core column (142) can be switched between a material abutting position extending out of the cylinder body (141) and a riveting position retracting back into the cylinder body (141), the outer end of the floating core column (142) is provided with a ball head (1421), the outer end surface of the cylinder body (141) is provided with a groove port (1422) with the outer diameter larger than the outer diameter of the ball head (1421), the floating core column (142) is provided with a piston (141) for hermetically dividing the inner cavity of the cylinder body (141) into a first cavity and a second cavity, and the piston (141) is communicated with the first cavity (144) and the second cavity (144) is communicated with the first cavity (144); riveting mechanism (2) symmetry sets up in the both sides of positioning mechanism (1), the output of riveting mechanism (2) is equipped with joint pipe (21), be equipped with in joint pipe (21) and push away material passageway (211) and feed channel (212) in pushing away material passageway (211), the outer end of feed channel (212) is connected with dispensing mechanism (3) through the hose, dispensing mechanism (3) utilize compressed gas to blow rivet (4) one by one to feed channel (212), servo pressure head (22) through riveting mechanism (2) extrudees rivet (4) to offset with floating stem (142), the thrust that continues to receive servo pressure head (22) after rivet (4) and floating stem (142) contact is in order to make rivet (4) and floating stem (142) synchronous movement to riveting position in order to carry out the riveting.

2. An automated riveting apparatus according to claim 1 wherein: the automatic lifting device is characterized by further comprising a bearing table (5), wherein the bearing table (5) comprises a vertical surface and an inclined surface which are arranged at an acute angle, so that a workpiece (7) can be placed onto the bearing table (5) in an inverted mode, two unit blocks are slidably arranged on the bearing table (5) and are connected through a tension spring (15), and a driving unit (16) for driving the two unit blocks to move outwards towards two sides is arranged on the bearing table (5).

3. An automated riveting apparatus according to claim 2 wherein: the driving unit (16) comprises a driving block (161) arranged between two unit blocks and a driving air cylinder (162) for driving the driving block (161) to vertically lift, guide surfaces A (1611) widening towards one side close to the air cylinder (162) are respectively arranged at two ends of the driving block (161), and when the driving air cylinder (162) pushes the driving block (161) to output, the driving block (161) drives the left unit block (12) and the right unit block (13) to be far away from each other through the guide surfaces A (1611).

4. An automated riveting apparatus according to claim 1 wherein: still include support frame (6) and plummer (5), plummer (5) are placed in the bottom of support frame (6), and locating rack (11) liftable ground sets up in support frame (6), is equipped with on support frame (6) and orders about lifting unit (61) of locating rack (11) vertical lift, before the riveting, work piece (7) are just putting on plummer (5), and lifting unit (61) orders about locating rack (11) to move down to the location space of work piece (7) in order to fix a position work piece (7).

5. An automated riveting apparatus according to claim 4 wherein: the left unit block (12) and the right unit block (13) are connected through a tension spring (15), a driving unit (16) for driving the two unit blocks to move outwards towards two sides is arranged on the bearing table (5), and a positioning unit (18) for fixing the unit blocks moving to the outer end is arranged on the positioning frame (11).

6. An automated riveting apparatus according to claim 1 wherein: a sealing plug (1411) is arranged at the rear end of the cylinder body (141), a top column (1412) is connected with the inner sides of the two unit blocks in a threaded mode, and the position of the sealing plug (1411) in the cylinder body (141) is adjusted by screwing the top column (1412).

7. An automated riveting apparatus according to claim 1 wherein: the distribution mechanism (3) comprises a distributor (31), the number of discharge ports of the distributor (31) corresponds to the number of the joint pipes (21), and the discharge ports of the distributor (31) are connected with the corresponding feed channels (212) of the joint pipes (21) through hoses.

8. An automated riveting apparatus according to claim 1 wherein: the riveting mechanism (2) comprises a servo riveting machine (23), a guide pipe is arranged at the output end of the servo riveting machine (23), a joint pipe (21) is connected to the other end of the guide pipe, and a servo pressure head (22) of the servo riveting machine (23) can transversely move along the guide pipe to drive the rivet (4) to move towards the riveting position and rivet the rivet (4).

9. An automated riveting apparatus according to claim 1 wherein: the outside of two unit blocks is the clamping end, the clamping end includes bellying, vertical portion and connecting portion, be equipped with the installation cavity that transversely sets up respectively on bellying and the vertical portion, every installation intracavity all is equipped with and floats core locating component (14), riveting mechanism (2) and the one-to-one of floating core locating component (14).

10. An automated riveting apparatus according to claim 1 wherein: the locating frame (11) is provided with a transversely arranged sliding rail (17), and the slidable unit blocks are slidably arranged on the sliding rail (17) through sliding blocks (171).