CN116352425A - Automatic press riveting device and press riveting method for sheet metal machining - Google Patents

Abstract

The invention relates to the technical field of sheet metal riveting processing, in particular to an automatic riveting device for sheet metal processing, including a workbench, a punching machine, a controller, an automatic feeder and a riveting die, and the punching machine is installed on a working On the rear side of the upper surface of the table, the controller is installed on the right rear corner of the upper surface of the workbench, and the controller is electrically connected to the stamping machine, the automatic feeder is installed on the upper surface of the workbench, and the automatic feeder is located at the Right below the machine, the automatic feeder is electrically connected to the controller, and the riveting mold is installed on the top front side of the automatic feeder. The invention has the function of workpiece positioning, which is beneficial for the staff to align the pressure riveting hole of the workpiece with the pressure riveting mold, which can not only relieve the visual fatigue of the staff, but also not cause soreness in the arms of the staff, the quality of the pressure riveting of the horizontal pressure riveting of the workpiece can be guaranteed, and the Equipped with the ejection function of the riveting nut, the re-riveting of the workpiece saves time and labor, improves the pass rate and saves costs.

Description

Automatic riveting device and riveting method for sheet metal processing

technical field

The invention relates to the technical field of sheet metal riveting processing, in particular to an automatic riveting device and a riveting method for sheet metal processing.

Background technique

The automatic stamping machine is to use the stamping machine equipment and the special connecting mold to go through an instantaneous high-pressure processing process, according to the cold extrusion deformation of the plate itself, to form a stress-free internal mosaic dot with a certain tensile and shear strength. Two or more layers of boards of different materials and different thicknesses can be connected;

The automatic punching machine mainly includes a punching machine, a controller, an automatic feeder, a riveting die and a foot switch. When in use, the staff inserts the riveting hole of the workpiece into the riveting die, and the automatic feeder sends the riveting nut to the riveting die. Right above the die, press the riveting nut under the punching machine, and embed the riveting nut in the riveting hole of the workpiece to achieve the riveting process of the workpiece;

Because the riveting hole on the workpiece is small, before each riveting operation, the staff must carefully observe the riveting mold and the riveting hole of the workpiece, so that the riveting hole is aligned with the riveting mold, and the staff also have to hold the workpiece with their arms suspended. If things go on like this, it will not only cause visual fatigue, but also easily lead to sore arms. It is difficult to maintain a horizontal state when the workpiece is riveted, and the quality of the riveting cannot be guaranteed. Some punching machines do not have the function of riveting nut ejection. Re-riveting takes time and effort, and it is directly scrapped and wastes cost. Therefore, it is necessary to propose an automatic riveting device with positioning function.

Contents of the invention

In order to overcome the disadvantages of high labor intensity, low accuracy, and lack of push-out function of rivet nuts in the process of placing workpieces by workers in the prior art, the technical problem to be solved by the present invention is an automatic rivet nut for sheet metal processing. A riveting device and a riveting method.

In order to achieve the above object, the present invention provides the following technical solutions: an automatic riveting device for sheet metal processing, including a workbench, a punching machine, a controller, an automatic feeder and a riveting die, and the punching machine is installed on the workbench The rear side of the upper surface of the workbench, the controller is installed on the right rear corner of the upper surface of the workbench, and the controller is electrically connected to the stamping machine, the automatic feeder is installed on the upper surface of the workbench, and the automatic feeder is located on the punching machine Directly below, the automatic feeder is electrically connected to the controller, and the riveting mold is installed on the top front side of the automatic feeder, and also includes: a support platform, which is installed on the right front corner of the upper surface of the workbench, And the upper surface of the support platform is located on the same level as the upper surface of the riveting mold; the number of locators is several, and they are installed on the upper surface of the support platform in two rows from left to right; the repair mechanism is installed on the left side of the workbench side wall;

The purpose is to realize the adjustment of the position and angle of the baffle, and to position the workpiece. The locator includes: a guide rail embedded in the top of the support platform, and the inner cavity of the guide rail is dovetail-shaped; connected to the inner cavity of the guide rail; the baffle is rotatably mounted on the top of the slider through a pin; the pressure rod is rotatably mounted on the front left end of the baffle through a pin; the support rod is mounted on the The front right end of the baffle plate; the handle is connected to the outer wall of the support rod, and the left side of the handle is provided with a slideway, and the pressure rod runs through the inner cavity of the slideway; the U-shaped frame is installed on the front end of the pressure rod; the suction cup There are two in number, which are respectively installed at both ends of the U-shaped frame, and the suction cups are adsorbed on the upper surface of the support platform to position against the baffle.

Preferably, the tops of the opposite surfaces of the baffles on the two front and rear opposite locators are sloped.

Preferably, the upper surfaces of the support platform, the guide rail and the slider are all on the same level.

Preferably, the upward movement of the ejector pin is aimed at ejecting the qualified rivet nut in the middle of the workpiece. The repair mechanism includes: a first splint fixedly connected to the front end of the left side wall of the workbench, and the first splint A first socket is opened in the middle of the upper surface of a splint; the base is installed on the lower surface of the first splint, and the base corresponds to the position of the first socket; the ejection hydraulic cylinder is installed on the bottom of the base end center position; the thimble is installed at the output end of the ejection hydraulic cylinder; the rotating assembly is installed at the rear center of the first clamping plate; the second clamping plate is installed at the top of the rotating assembly, and on the second clamping plate A second jack is opened in the middle of the surface.

Preferably, when the second splint is rotated to directly above the first splint, the positions of the second insertion hole and the first insertion hole are located on the same vertical line.

Preferably, the purpose is to fix the second splint after rotation, the rotating assembly includes: a base, the base is fixedly connected to the center position of the rear side of the first splint, and the bottom of the inner cavity of the base is equidistant along the circumferential direction. card slot; the rotating shaft is rotatably installed at the center of the bottom end of the inner cavity of the base through a bearing; the sleeve is installed at the top of the rotating shaft, and the inner wall of the sleeve is provided with tooth grooves along the up and down direction. The outer wall is fixedly connected to the front side of the second splint; the spring and the gear are inserted into the inner cavity of the sleeve from top to bottom, and the outer wall of the gear is inserted into the tooth groove; the number of protrusions is two, and the positions are fixed relative to each other It is connected to the bottom end of the gear, and under the action of the spring, the protrusion on the gear is inserted into the inner cavity of the slot.

Preferably, the bump is arc-shaped.

The pressure riveting method of the above-mentioned device comprises the following steps:

Step 1, workpiece positioning and debugging, lift the handle, take the support rod as the rotation center, push the handle to lift the U-shaped frame, the suction cup is separated from the support platform, release the positioning of the baffle, first put the workpiece on the support platform, and press the workpiece Insert the riveting hole into the riveting mold, move the baffle through the slider, and make the baffle rotate according to the shape of the workpiece, use the baffles at different positions on the support platform to clamp the workpiece, press down the handle, and the pressure bar drives the U-shaped Press the suction cup under the frame, the suction cup is adsorbed on the support platform, position the baffle, and complete the positioning and debugging of the workpiece. Through the limit function of the baffle, when the workpiece is lowered to the support platform, the riveting hole of the workpiece is just right on the riveting mold on, easy to operate;

Step 2: Drive the punching machine to move through the controller, move the punch down to punch the rivet nut, insert the rivet nut into the rivet hole of the workpiece, and realize the rivet processing of the workpiece;

Step 3, positioning the rivet nut on the workpiece before taking it out, placing the workpiece on the upper surface of the first splint, moving the workpiece so that the rivet nut is directly above the first socket;

Step 4: Turn the second splint to make the sleeve and the rotating shaft rotate synchronously. Under the limit action of the tooth groove on the gear, the torque of the sleeve pulls the gear to rotate. Since the protrusion is arc-shaped, the protrusion can freely break away from the slot until the second The second splint covers the upper surface of the workpiece, and the spring provides a downward elastic force for the gear, prompting the protrusion to be inserted into the slot at the corresponding position, the sleeve is fixed, and then the second splint is fixed;

Step 5, push the thimble upwards through the ejection hydraulic cylinder, and the thimble pushes the rivet nut out of the workpiece, so as to achieve the purpose of disassembling the rivet nut, so as to reprocess the workpiece.

Compared with the prior art, the present invention has the following beneficial effects:

1. In the present invention, by moving the handle up and down, the pressure rod can be swung up and down, so as to realize the adsorption of the suction cup on the support platform. With the assistance of the slider, the baffle is moved and fixed after being rotated, so that multiple baffles are used to fix the workpiece. Limit position, with the workpiece positioning function, which is beneficial for the staff to align the riveting hole of the workpiece with the riveting mold, which can not only relieve the visual fatigue of the staff, but also not cause sore arms of the staff, and the quality of the riveting of the horizontal riveting of the workpiece can be guaranteed;

2. The present invention provides a downward elastic force for the gear through the elastic force of the spring, so that the protrusion can be inserted into the slot at the corresponding position after the sleeve is rotated, so as to fix the second splint after rotation, so that the first splint can Cooperate with the second splint to limit the position of the workpiece, drive the thimble up through the ejector hydraulic cylinder, and the thimble ejects the rivet nut on the workpiece, with the function of rivet nut ejection, the re-riveting of the workpiece saves time and effort, and improves the pass rate. cut costs.

Description of drawings

Fig. 1 is a structural representation of the present invention;

Fig. 2 is a structural schematic diagram of the locator of the present invention;

Fig. 3 is a left view sectional view of the positioner of the present invention;

Fig. 4 is a structural schematic diagram of the repair mechanism of the present invention;

Figure 5 is a front sectional view of the repair mechanism of the present invention;

Fig. 6 is a front sectional view of the rotating assembly of the present invention;

Fig. 7 is a bottom view of the gear of the present invention.

In the figure: 1-Workbench, 2-Punching machine, 3-Controller, 4-Automatic feeder, 5-Riveting die, 6-Support platform, 7-Positioner, 8-Repair mechanism, 71-Guide rail, 72 -slider, 73-baffle plate, 74-pressure rod, 75-support rod, 76-handle, 77-U-shaped frame, 78-suction cup, 81-first splint, 82-first jack, 83-base , 84-Ejection hydraulic cylinder, 85-Ejector pin, 86-Rotary assembly, 87-Second splint, 88-Second socket, 861-Base, 862-Slot, 863-Rotating shaft, 864-Sleeve, 865- Tooth groove, 866-spring, 867-gear, 868-projection.

Implementation

The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

The present invention provides a technical solution: an automatic riveting device for sheet metal processing, as shown in Figure 1-3, including a workbench 1, a punching machine 2, a controller 3, an automatic feeder 4 and a riveting die 5 , the punching machine 2 is installed on the rear side of the upper surface of the workbench 1, the controller 3 is installed on the right rear corner of the upper surface of the workbench 1, and the controller 3 is electrically connected to the punching machine 2, and the automatic feeder 4 is installed on the workbench 1, and the automatic feeder 4 is located directly below the punching machine 2, the automatic feeder 4 is electrically connected to the controller 3, the riveting die 5 is installed on the top front side of the automatic feeder 4, and also includes a support platform 6, Positioner 7 and repair mechanism 8, support platform 6 is installed on the upper right front corner of the upper surface of workbench 1, and the upper surface of support platform 6 and the upper surface of riveting mold 5 are located on the same horizontal plane; the number of positioners 7 is several, in two rows Installed on the upper surface of the support platform 6 from left to right; the repair mechanism 8 is installed on the left side wall of the workbench 1;

The controller 3 drives the punching machine 2 to move, the punch moves down to punch the riveting nut, and inserts the riveting nut into the riveting hole of the workpiece to realize the riveting process of the workpiece;

As shown in Figures 2 and 3, the positioner 7 includes a guide rail 71, a slide block 72, a baffle plate 73, a pressure bar 74, a support rod 75, a handle 76, a U-shaped frame 77 and a suction cup 78, and the guide rail 71 is embedded in the supporting platform 6 the top of the guide rail 71, and the inner cavity of the guide rail 71 is dovetail-shaped, preventing the slider 72 from detaching from the guide rail 71; Movement; the baffle plate 73 is rotatably installed on the top of the slide block 72 through the pin shaft, the baffle plate 73 plays a position-limiting effect on the workpiece, and the top of the opposite surface of the baffle plate 73 on the two positioners 7 opposite front and back is a slope, and the baffle plate 73 is inclined. The space surrounded by the plate 73 is from top to bottom and from large to small, which is convenient for the staff to accurately place the workpiece on the support platform 6; Frame 77 plays a supporting role; support rod 75 is installed on the front right end of baffle plate 73; The depression bar 74 can be pulled when the depression bar 74 swings up and down, and the depression bar 74 runs through the slideway inner chamber; the U-shaped frame 77 is installed on the front end of the depression bar 74; end, and the suction cup 78 is adsorbed on the upper surface of the support platform 6 and positioned against the baffle plate 73;

Workpiece positioning debugging, lifting the handle 76, with the support rod 75 as the center of rotation, prompting the handle 76 to lift the U-shaped frame 77, the suction cup 78 is separated from the support platform 6, and the positioning of the baffle plate 73 is released, and the workpiece is first placed on the support platform 6 , and the workpiece pressure riveting hole is inserted on the pressure riveting mold 5, the baffle 73 is moved by the slider 72, and the baffle 73 is rotated according to the shape of the workpiece, and the workpiece is clamped by using the baffle 73 at different positions on the support platform 6 Hold, press down the handle 76, the pressure bar 74 drives the U-shaped frame 77 to press down the suction cup 78, the suction cup 78 is adsorbed on the support platform 6, and the baffle plate 73 is positioned to complete the workpiece positioning debugging. Through the limiting effect of the baffle plate 73, the When the workpiece is put down on the supporting platform 6, the pressure riveting hole of the workpiece is just placed on the pressure riveting mold 5, and the operation is simple.

As a preferred solution, further, the upper surfaces of the support platform 6 , the guide rail 71 and the slider 72 are all on the same level, so that when the workpiece is placed on the support platform 6 , it is guaranteed that the workpiece will not see rockers.

As a preferred solution, further, as shown in Figures 4 and 5, the repair mechanism 8 includes a first splint 81, a first socket 82, a base 83, an ejection hydraulic cylinder 84, a thimble 85, a rotating assembly 86, a second Clamping plate 87 and second jack 88, the first clamping plate 81 is fixedly connected on the front end of the left side wall of workbench 1, is used for placing workpiece, the upper surface middle part of first clamping plate 81 is provided with first jack 82; Base 83 is installed on the lower surface of the first splint 81, and the base 83 corresponds to the position of the first socket 82; the ejection hydraulic cylinder 84 is installed at the bottom center of the base 83; the thimble 85 is installed on the ejection hydraulic cylinder 84 The output end of the rotating assembly 86 is installed on the rear side center position of the first clamping plate 81; the second clamping plate 87 is installed on the top of the rotating assembly 86, utilizes the cooperation of the first clamping plate 81 and the second clamping plate 87 to clamp the workpiece, and the second clamping plate 87 The middle part of the upper surface of the second splint 87 is provided with a second jack 88. When the second splint 87 is rotated to the top of the first splint 81, the second jack 88 and the first jack 82 are positioned on the same vertical line. The jack 82 and the second jack 88 reserve a moving space for the thimble 85, and the outer diameter of the thimble 85 is smaller than the riveting hole of the workpiece, so as to prevent the thimble 85 from damaging the workpiece during work.

As a preferred solution, further, as shown in Figures 6 and 7, the rotating assembly 86 includes a base 861, a slot 862, a shaft 863, a sleeve 864, a tooth groove 865, a spring 866, a gear 867 and a protrusion 868, and the base 861 It is fixedly connected to the center position of the rear side of the first splint 81, and the inner chamber bottom of the base 861 is equidistantly provided with slots 862 along the circumferential direction. 868 can be used to position the sleeve 864; the shaft 863 is rotatably installed at the center of the bottom end of the base 861 through the bearing; the sleeve 864 is installed on the top of the shaft 863, and the inner wall of the sleeve 864 is provided with teeth along the up and down direction. Groove 865, tooth groove 865 plays gear 867 position-limiting effect, makes gear 867 move up and down while, also can follow sleeve 864 to rotate, and the outer wall of sleeve 864 is fixedly connected with the front side of second splint 87; Spring 866 and gear 867 is inserted into the inner cavity of the sleeve 864 from top to bottom, and the outer wall of the gear 867 is inserted into the tooth groove 865. The spring 866 provides a downward elastic force for the gear 867 to ensure that the protrusion 868 can stay in the slot 862 stably. Middle; the number of bumps 868 is two, and the positions are fixedly connected to the bottom end of the gear 867. Under the action of the spring 866, the bumps 868 on the gear 867 are inserted into the inner cavity of the card slot 862; the shape of the bumps 868 is an arc shape, when the sleeve 864 rotates, the gear 867 rotates with the sleeve 864, and the protrusion 868 is pressed up under the resistance of the slot 862, so that the protrusion 868 can freely enter and exit the slot 862;

Position the rivet nut on the workpiece before taking it out, place the workpiece on the upper surface of the first splint 81, move the workpiece and make the rivet nut directly above the first jack 82;

Rotate the second clamping plate 87 to impel the sleeve 864 and the rotating shaft 863 to rotate synchronously. Under the limiting action of the tooth groove 865 on the gear 867, the sleeve 864 torque pulls the gear 867 to rotate. Since the projection 868 is arc-shaped, the projection 868 can freely Disengage from the slot 862 until the second clamping plate 87 covers the upper surface of the workpiece, the spring 866 provides a downward elastic force for the gear 867, prompting the protrusion 868 to be inserted into the slot 862 at the corresponding position, and the sleeve 864 is fixed, so that The second splint 87 is fixed;

The thimble 85 is pushed upward by the ejection hydraulic cylinder 84, and the thimble 85 ejects the rivet nut from the workpiece to achieve the purpose of disassembling the rivet nut so as to reprocess the workpiece.

Although the embodiments of the present invention have been shown and described, those skilled in the art can understand that various changes, modifications and substitutions can be made to these embodiments without departing from the principle and spirit of the present invention. and modifications, the scope of the invention is defined by the appended claims and their equivalents.

Claims (8)

1. An automatic riveting device for sheet metal processing, comprising a workbench (1), a punching machine (2), a controller (3), an automatic feeder (4) and a riveting die (5), the punching The machine (2) is installed on the rear side of the upper surface of the workbench (1), and the controller (3) is installed on the right rear corner of the upper surface of the workbench (1), and the controller (3) is connected with the punching machine (2) Electrically connected, the automatic feeder (4) is installed on the upper surface of the workbench (1), and the automatic feeder (4) is located directly below the punching machine (2), the automatic feeder (4) and the controller (3) Electrically connected, the riveting die (5) is installed on the top front side of the automatic feeder (4), and it is characterized in that it also includes: The support platform (6) is installed on the right front corner of the upper surface of the workbench (1), and the upper surface of the support platform (6) is at the same level as the upper surface of the riveting mold (5); There are several positioners (7), installed in two rows from left to right on the upper surface of the support platform (6); The repair mechanism (8) is installed on the left side wall of the workbench (1); The locator (7) includes: The guide rail (71) is embedded on the top of the support platform (6), and the inner cavity of the guide rail (71) is dovetail-shaped; The slider (72) is plugged into the inner cavity of the guide rail (71) capable of sliding back and forth; The baffle (73) is rotatably mounted on the top of the slider (72) through a pin shaft; The pressure rod (74) is rotatably installed on the front left end of the baffle (73) through a pin shaft; A support rod (75), installed on the front right end of the baffle (73); The handle (76) is sleeved on the outer wall of the support rod (75), and the left side of the handle (76) is provided with a slideway, and the pressure rod (74) runs through the inner cavity of the slideway; U-shaped frame (77), installed on the front end of the pressure bar (74); There are two suction cups (78), which are respectively installed at both ends of the U-shaped frame (77), and the suction cups (78) are adsorbed on the upper surface of the support platform (6) and positioned against the baffle (73). 2 . The automatic riveting device for sheet metal processing according to claim 1 , characterized in that the tops of the opposite surfaces of the baffles ( 73 ) on the two positioners ( 7 ) facing each other front and rear are sloped. 3 . 3. An automatic riveting device for sheet metal processing according to claim 2, characterized in that the upper surfaces of the support platform (6), guide rail (71) and slider (72) are all on the same horizontal plane superior. 4. The automatic riveting device for sheet metal processing according to claim 3, characterized in that the repair mechanism (8) comprises: The first splint (81) is fixedly connected to the front end of the left side wall of the workbench (1), and the middle part of the upper surface of the first splint (81) is provided with a first socket (82); The base (83) is installed on the lower surface of the first splint (81), and the base (83) corresponds to the position of the first socket (82); Eject the hydraulic cylinder (84), installed at the bottom center of the base (83); The thimble (85) is installed at the output end of the ejection hydraulic cylinder (84); The rotating assembly (86) is installed at the rear center of the first splint (81); The second splint (87) is installed on the top of the rotating assembly (86), and a second insertion hole (88) is opened in the middle of the upper surface of the second splint (87). 5. An automatic riveting device for sheet metal processing according to claim 4, characterized in that, when the second splint (87) is rotated directly above the first splint (81), the second socket ( 88) is located on the same vertical line as the position of the first jack (82). 6. The automatic riveting device for sheet metal processing according to claim 5, characterized in that, the rotating assembly (86) comprises: The base (861) is fixedly connected to the rear center of the first splint (81), and the bottom of the inner cavity of the base (861) is equidistantly provided with slots (862) along the circumferential direction; The rotating shaft (863) is rotatably installed at the bottom center of the inner cavity of the base (861) through a bearing; The sleeve (864) is installed on the top of the rotating shaft (863), and the inner wall of the sleeve (864) is provided with tooth grooves (865) along the up and down direction, and the outer wall of the sleeve (864) is connected with the second splint ( 87) Front fixed connection; The spring (866) and the gear (867) are plugged into the inner cavity of the sleeve (864) from top to bottom, and the outer wall of the gear (867) is plugged into the tooth groove (865); There are two bumps (868), fixedly connected to the bottom end of the gear (867) opposite to the left and right, and the bumps (868) on the gear (867) are inserted under the action of the spring (866) Card slot (862) inner cavity. 7. The automatic riveting device for sheet metal processing according to claim 6, characterized in that the shape of the bump (868) is arc. 8. The riveting method of an automatic riveting device for sheet metal processing according to claim 7, comprising the following steps: Step 1, positioning and debugging of the workpiece, lift the handle (76), and use the support rod (75) as the center of rotation to force the handle (76) to lift the U-shaped frame (77), the suction cup (78) is separated from the support platform (6), and the For the positioning of the baffle (73), first place the workpiece on the supporting platform (6), and insert the riveting hole of the workpiece into the riveting mold (5), and move the baffle (73) through the slider (72), And according to the shape of the workpiece, the baffle plate (73) is rotated according to the trend, and the baffle plate (73) at different positions on the support platform (6) is used to clamp the workpiece, and the handle (76) is pressed down, and the pressure bar (74) drives the U-shaped frame ( 77) Press down on the suction cup (78), the suction cup (78) is adsorbed on the support platform (6), and the baffle (73) is positioned to complete the positioning and debugging of the workpiece. Through the limit function of the baffle (73), the workpiece can be lowered When reaching the support platform (6), the riveting hole of the workpiece is just right on the riveting mold (5), and the operation is simple; Step 2, the controller (3) drives the punching machine (2) to move, the punch moves down to punch the rivet nut, and inserts the rivet nut into the rivet hole of the workpiece to realize the rivet processing of the workpiece; Step 3, positioning the rivet nut on the workpiece before taking it out, placing the workpiece on the upper surface of the first splint (81), moving the workpiece so that the rivet nut is directly above the first socket (82); Step 4: Rotate the second splint (87) to promote the synchronous rotation of the sleeve (864) and the shaft (863). Under the limit action of the tooth groove (865) on the gear (867), the torque of the sleeve (864) pulls the gear ( 867) rotates, because the projection (868) is arc-shaped, the projection (868) can freely break away from the slot (862), until the second splint (87) covers the upper surface of the workpiece, and the spring (866) is the gear (867) Provide a downward elastic force to urge the protrusion (868) to be inserted into the slot (862) at the corresponding position, the sleeve (864) is fixed, and then the second splint (87) is fixed; Step 5, pushing the thimble (85) upwards through the ejecting hydraulic cylinder (84), and the thimble (85) pushes the rivet nut out of the workpiece to achieve the purpose of disassembling the rivet nut so as to reprocess the workpiece.

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