CN117086256A

CN117086256A - A riveting workstation

Info

Publication number: CN117086256A
Application number: CN202310883477.8A
Authority: CN
Inventors: 李强锋
Original assignee: Chongqing Rongyang Auto Parts Co ltd
Current assignee: Chongqing Rongyang Auto Parts Co ltd
Priority date: 2023-07-19
Filing date: 2023-07-19
Publication date: 2023-11-21
Anticipated expiration: 2043-07-19
Also published as: CN117086256B

Abstract

The invention discloses a rivet pulling working station, which belongs to the technical field of rivet pulling, and comprises a machine case and a working table arranged in the machine case, wherein a rivet pulling gun is arranged above the working table, a clamp bottom plate is arranged on the working table, a positioning component for installing a bent strip-shaped workpiece is arranged on the clamp bottom plate, the positioning component comprises a plurality of pairs of supports which are arranged left and right, all the supports are gradually lifted from two ends to the middle, a placing groove for the embedded placement of the workpiece is formed in the top of each support, a pressing block is further arranged above the adjacent two supports on each side, and the pressing block is vertically arranged in a telescopic manner so as to be pressed on the upper surface of the workpiece placed on the placing groove; the hand riveter is arranged in a horizontal sliding mode along the length direction of the workpiece, and the hand riveter can rotate around a vertical axis to move to the position right above the position of the hand riveter on the workpiece. The invention has higher riveting efficiency and stable and reliable riveting quality.

Description

Pulling rivet workstation

Technical Field

The invention relates to the technical field of rivet pulling, in particular to a rivet pulling workstation.

Background

Rivet riveting technology is a special connecting technology in fact, and in automobile manufacturing, particularly in automobile body manufacturing, such as a common procedure in sheet metal manufacturing, parts are connected through the rivet connecting technology.

The current riveting technology is very mature, besides the traditional direct stamping riveting, the deformation, forming, extension and other methods are also integrated into the riveting processing, in fact, the riveting technology is needed for the parts which are half on an automobile, the common riveting mainly comprises pull riveting, spin riveting, press riveting, self-piercing riveting and the like, the pull riveting is frequent in the automobile processing, the pull riveting belongs to the cold riveting processing technology, and the riveting technology which does not carry out heating is referred to. The rivet is riveted with a riveted part by using manual or compressed air as power through a special tool, the main materials used for rivet pulling are rivet-riveted, and the tool is usually a blind rivet and a pneumatic rivet pulling gun, when in operation, the aperture of a rivet head is reasonably selected based on the diameter of the rivet rod, then the rivet is penetrated into a pre-manufactured rivet hole, the rivet rod is clamped after being sleeved on the rivet pulling gun, the head of the rivet is propped against the head of the rivet, the rivet gun is started, the rivet is deformed by compression, the shoulder part of the rivet rod forms pressure on the rivet by virtue of the tension generated by the compressed air, the rivet is deformed in compression, and the rivet rod is pulled out instantly due to the fracture of a necking part, so that the rivet pulling riveting is finished. For the riveting process, when some arc-shaped strip-shaped parts such as automobile sliding grooves are subjected to riveting operation, the bending parts are difficult to clamp well, because once the bending parts are not clamped well, the bending parts are sheet metal parts and bent to be hollow structures, and unlike the common solid metal structural parts, the bending parts are easier to deform obviously due to the particularity of the riveting process, so that the automobile parts are damaged. On the other hand, the existing rivet pulling process is that a worker directly holds a rivet pulling gun to rivet a workpiece, and the rivet pulling process is low in efficiency and cannot be completely standardized and unified, and the rivet pulling quality is uneven although the requirement on matching of tool equipment is simple.

Disclosure of Invention

The invention aims to solve the problems of the prior art, namely to provide a rivet pulling working station, which solves the problems of low rivet pulling efficiency on a workpiece and difficulty in stable control of rivet pulling quality in the prior art.

In order to achieve the above purpose, the present invention provides the following technical solutions: the invention provides a hand riveter workstation, which comprises a chassis and a workbench arranged in the chassis, wherein a hand riveter is arranged above the workbench, a clamp bottom plate is arranged on the workbench, a positioning assembly for installing a bent strip-shaped workpiece is arranged on the clamp bottom plate, the positioning assembly comprises a plurality of pairs of supports which are arranged left and right, all the supports are gradually lifted from two ends to the middle, a placing groove for the embedded placement of the workpiece is formed in the top of each support, and a pressing block is further arranged above between two adjacent supports on each side and is vertically and telescopically movably arranged so as to press the upper surface of the workpiece placed on the placing groove;

the hand riveter is arranged in a horizontal sliding mode along the length direction of the workpiece, and can rotate around a vertical axis to move to the position right above the position of the hand riveter on the workpiece.

Further, two side end surfaces of the clamp bottom plate in the length direction of the workpiece are respectively fixed with a disc, and the discs are in transmission connection with a main shaft of the motor.

Further, the disc is provided with a chute along the diameter direction, and the two side end surfaces of the clamp bottom plate are respectively arranged in the chute in a sliding fit manner and are detachably connected through a fastening bolt penetrating through the bottom of the chute.

Further, the main shaft is an axial telescopic shaft, and handles are fixedly connected to the upper surfaces of the end faces of the two sides of the clamp bottom plate, and the handles are used for holding the clamp bottom plate by hands.

Further, a vertically installed lower support column is provided between a pair of holders at the center, and is axially retractable for reliable contact with the lower surface of the work piece placed in the placing groove.

Further, the lower support column comprises a pressure sensor, the pressure sensor is used for detecting acting force between the workpiece and the lower support column after the workpiece is installed, the acting force is equal to a set value after the workpiece is clamped, the acting force is gradually reduced after the rivet rod is pulled by the rivet pulling gun, and one value in the reduced process is equal to a set rivet pulling degree reference value.

Further, the rivet level reference value is equal to between zero and 2N.

Further, the hand riveter is fixedly arranged on a mounting plate above the workbench, the upper end of the mounting plate is provided with a protective cover for accommodating a gun stock part of the hand riveter, the lower end of the mounting plate is provided with a gun head of the hand riveter to extend out to enable the gun head to be arranged vertically, the end part of the mounting plate is inserted into one end of a cantilever through a pin, the pin in the cantilever radially penetrates through a bent pipe, the bottom end of the bent pipe is provided with a button head, and the button head and the gun head are arranged in parallel; the other end of the cantilever is rotatably arranged at one end of a connecting rod, the connecting rod is positioned below the cantilever and is in smooth contact with the cantilever, the cantilever can rotate around one end of the connecting rod in a horizontal plane, and the other end of the connecting rod is arranged on a sliding seat.

Further, the sliding seat comprises a pair of sliding holes which are arranged up and down, two sliding holes are used for a pair of sliding rods which are arranged in parallel to pass through in a sliding fit manner, and two ends of the sliding rods are sleeved on corresponding upright posts through adjusting blocks;

further, a bottom bin is further arranged below the workbench, a plurality of positioning assemblies are arranged in the bottom bin, and the sliding seat moves downwards to the hand riveter along the upright post so as to carry out the hand riveter operation on the workpiece clamped on the positioning assemblies in the bottom bin.

Further, the pressing block is embedded and fixed on the bottom end face of the rectangular strip, one side of the bottom end face is exposed and is used for being in extrusion contact with the surface of a workpiece, the pressing block is made of a rubber block, and the end part of the rectangular strip is arranged on the output shaft of the air cylinder, so that when the output shaft of the air cylinder contracts, the rectangular strip presses the workpiece on the support through the pressing block.

Compared with the prior art, the invention has the following beneficial effects: the riveting workstation can rapidly and reasonably and reliably clamp and position workpieces, the riveting gun automatically moves to each riveting position to rapidly rivet, error is effectively prevented, the automation degree is high, errors generated during manual riveting operation can be effectively prevented, and stable and controllable riveting operation quality is ensured.

Drawings

In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a perspective view of the whole of the present invention;

FIG. 2 is an internal block diagram of the present invention;

FIG. 3 is a diagram of the mounting positional relationship between the locating assembly and the blind rivet gun;

FIG. 4 is a block diagram of two practical applications of the positioning assembly;

FIG. 5 is a schematic view of the mounting structure of the blind rivet gun;

fig. 6 is another perspective view of the structure of the present invention.

The reference numerals are explained as follows: the machine case 1, the workbench 2, the positioning assembly 3, the rivet pulling gun 4, the clamp bottom plate 5, the workpiece 6, the support 7, the pressing block 8, the disc 9, the lower support column 10, the rectangular strip 11, the cylinder 12, the handle 13, the rivet 14, the elbow 15, the button head 16, the mounting plate 17, the cantilever 18, the connecting rod 19, the sliding seat 20, the sliding rod 21, the adjusting block 22, the upright post 23 and the bottom bin 24.

Detailed Description

In order to make the technical means, creation characteristics, achievement purposes and functions of the present invention more clear and easy to understand, the technical scheme of the present invention will be described in detail below. It will be appreciated by those skilled in the art that the following examples illustrate only some, but not all, of the specific embodiments of the invention and that the scope of the invention is not limited thereto.

Referring to fig. 1-3, this embodiment discloses a hand riveter station, which mainly includes a case 1 and a workbench 2 installed in the case 1, wherein the case 1 may be made into a rectangular structure, and a metal grid is disposed around the upper portion for protection shielding. Meanwhile, a rivet pulling gun 4 is arranged above the workbench 2, the rivet pulling gun 4 is used for carrying out rivet pulling processing operation on some rivets 14 on the workpiece 6, specifically, a clamp bottom plate 5 is arranged on the workbench 2 in the embodiment, the clamp bottom plate 5 is in a rectangular shape, a positioning component 3 for installing bent strip-shaped workpieces 6, such as automobile zero-2N parts such as clamping sliding grooves and the like, is mainly arranged on the clamp bottom plate 5, the positioning component 3 comprises a plurality of pairs of supports 7 which are arranged left and right, the manufacturing can be specifically made into an L-shaped block structure, the positioning component is detachably arranged on the upper surface of the clamp bottom plate 5, all the supports 7 are gradually lifted from two ends to the middle so as to adapt to the arc bending shape of the workpiece 6, clamping positioning is facilitated, and the shape accuracy of the workpiece 6 is prevented from being damaged during rivet pulling operation. As a specific implementation structure, a placing groove (reference numeral is not shown in the figure) for placing the workpiece 6 in an embedded manner is formed in the top of each support 7, the placing groove can be generally rectangular notch-shaped, meanwhile, a pressing block 8 is further arranged above the two adjacent supports 7 on each side, the pressing block 8 can also be in a rectangular block structure, and the pressing block 8 is preferably vertically and telescopically movably mounted so as to be pressed on the upper surface of the workpiece 6 placed on the placing groove, so that the workpiece 6 with more sizes is suitable for clamping and positioning. In the embodiment, the rivet pulling gun 4 is horizontally slidably disposed along the length direction of the workpiece 6, for example, in the position shown in fig. 3, the rivet pulling gun 4 can be moved left and right, and in order to flexibly move to a predetermined position, the rivet pulling gun 4 can also rotate around a vertical axis so as to rotate when horizontally moving to a proper position, and then the workpiece 6 is located right above the rivet pulling position, so that the workpiece can be vertically moved, and is connected with a rivet 14 buried in advance to perform drawing, riveting and fixing.

In this embodiment, as shown in fig. 2, two side end surfaces of the fixture bottom plate 5 in the length direction of the workpiece 6 are respectively fixed with a disc 9, and the discs 9 are connected with a spindle of a motor in a transmission manner, so that the position in the three-dimensional space where the workpiece 6 is located can be adjusted, the posture of the fixture bottom plate is adjusted, and the fixture bottom plate is favorable for being matched with the rivet pulling gun 4 better to carry out rivet pulling fixing operation. During concrete installation, the disc 9 is provided with a chute along the diameter direction, the end faces of the two sides of the clamp bottom plate 5 are respectively installed in the chute in a sliding fit manner, the position of the clamp bottom plate 5 can be adjusted in the chute, the position of the clamp bottom plate 5 is changed, the chute can be T-shaped, and the chute is matched with a fixing manner such as a T-shaped bolt used as a fastening bolt, so that the clamp bottom plate can be flexibly installed and used by detachably connecting the fastening bolt penetrating through the bottom of the chute.

In order to enable the clamp base to be installed more stably, the main shaft is an axially telescopic shaft so as to stretch after being installed, and the clamp base plate 5 is fixed in an axial jacking mode. In order to facilitate installation and use, handles 13 are fixedly connected to the upper surfaces of the end faces of the two sides of the clamp base plate 5, the handles 13 are in a U-shaped structure, and the handles 13 are used for holding by hands to take the clamp base plate 5.

In addition, as an optimum design structure, as shown in fig. 3, the present rivet work stands between a pair of holders 7 at the center of the clamp base plate 5, and is particularly provided with a vertically installed lower support column 10, the lower support column 10 being axially retractable for reliable contact with the lower surface of the work piece 6 after being placed in the placing groove. Specifically, the lower support column 10 may include a pressure sensor, and specifically, the lower support column 10 may include a spring, where one end of the spring contacts a top of the lower support column 10, and the other end contacts the pressure sensor, and the top is used to directly contact the lower surface of the workpiece 6, so that the pressure sensor detects a corresponding pressure value, and the state of clamping the workpiece 6 at this time is determined, so as to avoid excessive clamping of the workpiece 6. In short, the pressure sensor is used for detecting acting force between the workpiece 6 and the lower support column 10 after being installed, namely, the acting force is a pressure value, namely, after the pressing block 8 presses the workpiece 6, the clamping force of the workpiece 6 can be detected through the pressure sensor, whether the clamping is proper or not is judged, and local excessive bending of the workpiece 6 is avoided. Another key effect is that after the workpiece 6 is clamped, the aforementioned acting force is equal to a set value, for example, equal to 30N, and just in the process of pulling the rivet 14 shank by the rivet pulling gun 4, the workpiece 6 must be subjected to an upward pulling force, at this time, the workpiece 6 will have an upward and distant trend relative to the lower support column 10, so that the acting force gradually decreases, and one value in the decreasing process is equal to a set reference value of the riveting degree, for example, the reference value is equal to 10N, which indicates that the riveting force applied by the rivet pulling gun 4 in the riveting process is satisfactory, a determination reference of an operating state of the rivet pulling gun 4 can be performed, and also an intuitive fact reference of the riveting process can be performed, i.e. the reference value of the riveting degree is equal to zero to 2N, that the workpiece 6 can be almost not in pressing contact with the lower support column 10, but is not thoroughly separated from the workpiece 6 in practice, the riveting force is maximum, and the effect of the rivet fixing effect is good, without causing out-of-tolerance deformation of the workpiece 6.

As a construction detail, as shown in fig. 5, the hand riveter 4 is fixedly installed on an installation plate 17 above the workbench 2, a protective cover for accommodating the butt portion of the hand riveter 4 is provided at the upper end of the installation plate 17 to cover and protect the butt portion, and the lower end of the installation plate 17 is provided for extending the gun head of the hand riveter 4, so that the gun head is vertically arranged to draw the rivet 14. Meanwhile, the end of the mounting plate 17 is inserted into one end of a cantilever 18 through a pin (not shown in the figure), the pin positioned in the cantilever 18 radially penetrates through a bent pipe 15, the bottom end of the bent pipe 15 is provided with a button head 16, and the button head 16 and the gun head are arranged in parallel, so that the clamp bottom plate 5 can be assisted to be pressed, and the positioning assembly 3 is prevented from moving upwards integrally during riveting. More specifically, the other end of the cantilever 18 is rotatably mounted at one end of a connecting rod 19, the connecting rod 19 is positioned below the cantilever 18 and is in smooth contact with the cantilever 18, the cantilever 18 can rotate around one end of the connecting rod 19 in a horizontal plane, and the other end of the connecting rod 19 is mounted on a sliding seat 20, so that the flexible rotation of the hand riveter 4 is realized. In addition, with continued reference to fig. 5, the slide 20 includes a pair of slide holes disposed up and down, the two slide holes are provided for a pair of slide bars 21 disposed in parallel to pass through in a sliding fit manner, and two ends of the slide bars 21 are sleeved on respective corresponding upright posts 23 through adjusting blocks 22 so as to move along the slide bars 21, thereby expanding the movement range of the hand riveter 4 and enlarging the hand riveter working area.

Finally, as a recommended structural design, as shown in fig. 6, a bottom bin 24 is further arranged below the workbench 2, a plurality of positioning assemblies 3 are arranged in the bottom bin 24 and used for clamping a plurality of workpieces 6, and the sliding seat 20 moves downwards along the upright 23, so that the rivet pulling gun 4 can move downwards, and rivet pulling operation can be performed on the workpieces 6 clamped on the positioning assemblies 3 in the bottom bin 24, so that operation of a double-layer working area is realized, and universality is improved.

For installation of the pressing block 8, as shown in fig. 4, the pressing block 8 is embedded and fixed on the bottom end face of a rectangular bar 11, and one side of the bottom end face is exposed for pressing contact with the surface of the workpiece 6, the pressing block 8 is preferably made of a rubber block, and has good hardness and certain buffering vibration damping property, the end part of the rectangular bar 11 is installed on the output shaft of the air cylinder 12, so that when the output shaft of the air cylinder 12 is contracted, the rectangular bar 11 presses the workpiece 6 on the support 7 with the pressing block 8, the workpiece 6 can be well pressed, and the workpiece 6 is prevented from being obviously deformed due to accidental vibration.

It should be further noted that, in the present disclosure, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Therefore, it will be appreciated by those skilled in the art that any modifications and equivalent substitutions of the present embodiment without departing from the technical spirit of the present invention can be made by those skilled in the art based on the technical principles disclosed in the present invention, and the present invention is also intended to be within the scope of the present invention.

Claims

1. The utility model provides a rivet pulling workstation, includes quick-witted case (1) and installs workstation (2) in quick-witted case (1), the top of workstation (2) is equipped with rivet pulling rifle (4), its characterized in that: the workbench (2) is provided with a clamp bottom plate (5), the clamp bottom plate (5) is provided with a positioning component (3) for installing a bent strip-shaped workpiece (6), the positioning component (3) comprises a plurality of pairs of supports (7) which are arranged left and right, all the supports (7) are gradually lifted from two ends to the middle, the top of each support (7) is provided with a placing groove for the embedded placement of the workpiece (6), a pressing block (8) is further arranged above the position between every two adjacent supports (7) on each side, and the pressing block (8) is vertically installed in a telescopic moving mode so as to be pressed on the upper surface of the workpiece (6) placed on the placing groove;

the hand riveter (4) is horizontally arranged in a sliding mode along the length direction of the workpiece (6), and the hand riveter (4) can rotate around a vertical axis to move to the position right above the position of the hand riveter on the workpiece (6).

2. The hand riveter station of claim 1, wherein: the two side end surfaces of the clamp base plate (5) in the length direction of the workpiece (6) are respectively fixed with a disc (9), and the discs (9) are in transmission connection with a main shaft of a motor.

3. The hand riveter station of claim 2, wherein: the disc (9) is provided with a chute along the diameter direction, and the end faces of the two sides of the clamp bottom plate (5) are respectively arranged in the chute in a sliding fit manner and are detachably connected through a fastening bolt penetrating through the bottom of the chute.

4. A hand riveter station as claimed in claim 3, wherein: the main shaft is an axial telescopic shaft, handles (13) are fixedly connected to the upper surfaces of the end faces of the two sides of the clamp base plate (5), and the handles (13) are used for holding the clamp base plate (5).

5. The hand riveter station of claim 1, wherein: a vertically mounted lower support column (10) is arranged between a pair of supports (7) at the center, and the lower support column (10) can axially stretch and retract and is used for reliably contacting the lower surface of the workpiece (6) placed in the placing groove.

6. The hand riveter station of claim 5, wherein: the lower support column (10) comprises a pressure sensor, the pressure sensor is used for detecting acting force between the workpiece (6) and the lower support column (10) after being installed, the acting force is equal to a set value after the workpiece (6) is clamped, and after the rivet (14) shank is pulled by the rivet pulling gun (4), the acting force is gradually reduced, and one value in the reduced process is equal to a set rivet pulling degree reference value.

7. The hand riveter station of claim 6, wherein: the pull rivet degree reference value is equal to zero to 2N.

8. The hand riveter station of claim 1, wherein: the hand riveter (4) is fixedly arranged on a mounting plate (17) above the workbench (2), a protective cover for accommodating a gun stock part of the hand riveter (4) is arranged at the upper end of the mounting plate (17), the gun head of the hand riveter (4) is arranged vertically by extending out from the lower end of the mounting plate, the end part of the mounting plate (17) is inserted into one end of a cantilever (18) through a pin, a bent pipeline (15) radially penetrates through the pin in the cantilever (18), a button head (16) is arranged at the bottom end of the bent pipeline (15), and the button head (16) and the gun head are arranged in parallel; the other end of the cantilever (18) is rotatably arranged at one end of a connecting rod (19), the connecting rod (19) is positioned below the cantilever (18) and is in smooth contact with the cantilever, the cantilever (18) can rotate around one end of the connecting rod (19) in a horizontal plane, and the other end of the connecting rod (19) is arranged on a sliding seat (20).

9. The hand riveter station of claim 8, wherein: the sliding seat (20) comprises a pair of sliding holes which are arranged up and down, two sliding holes are used for a pair of sliding rods (21) which are arranged in parallel to pass through in a sliding fit manner, and two ends of the sliding rods (21) are sleeved on corresponding upright posts (23) respectively through adjusting blocks (22);

the lower part of the workbench (2) is also provided with a bottom bin (24), a plurality of positioning assemblies (3) are arranged in the bottom bin (24), and the slide seat (20) moves downwards to the rivet pulling gun (4) along the upright post (23) so as to carry out rivet pulling operation on the workpieces (6) clamped on the positioning assemblies (3) in the bottom bin (24).

10. The hand riveter station of claim 1, wherein: the pressing block (8) is embedded and fixed on the bottom end face of the rectangular strip (11), one side of the bottom end face is exposed and used for being in extrusion contact with the surface of the workpiece (6), the pressing block (8) is made of rubber blocks, the end portion of the rectangular strip (11) is mounted on the output shaft of the air cylinder (12), and when the output shaft of the air cylinder (12) contracts, the rectangular strip (11) is enabled to carry the pressing block (8) to press the workpiece (6) on the support (7).