CN114850385B - Hot expansion riveting pressing equipment - Google Patents

Abstract

The application belongs to the technical field of expansion riveting and pressing, and particularly relates to hot expansion riveting pressing equipment. The riveting device comprises a first driving assembly, a second driving assembly, a jig assembly and a riveting device, wherein the jig assembly is used for placing a workpiece, the jig assembly is provided with a riveting piece, a guide hole is formed in the riveting piece along the axial direction, the riveting device comprises a pin which can be matched with the guide hole, the pin protrudes relative to a riveting device body, the first driving assembly is used for driving the jig assembly to move along a first direction, when the jig assembly moves to a preset position along the first direction, the second driving assembly drives the riveting device to move along a second direction, the pin is matched with the guide hole, the pin supports the riveting piece along the radial direction, and the riveting piece and the workpiece are fixedly connected with each other. The application improves the tension riveting and pressing efficiency.

Description

Hot expansion riveting pressing equipment

Technical Field

The application belongs to the technical field of expansion riveting and pressing, and particularly relates to hot expansion riveting pressing equipment.

Background

In the existing riveting process of workpieces, for example, a PCB (chinese name printed circuit board) and an FPC (chinese name flexible circuit board) are riveted, a pull riveting mode (refer to fig. 13) is often adopted between a riveting piece and the workpiece, and in the riveting process, the riveting piece 5b is subjected to plastic deformation under the action of external tension, and the workpiece is clamped by a deformed part to realize reliable connection. For example, CN201410841344.5 discloses a rivet fastening structure of a terminal and a housing and a method for rivet fastening, which comprises: the shell is internally provided with a plane, a circuit board is arranged on the plane, the middle part of the shell is provided with a plane, the plane is attached to the upper plane of the binding post, an annular groove is formed above the binding post, a sealing ring is arranged in the annular groove, a hole is formed in the binding post, a pull rivet is arranged in the hole, and the pull rivet through which the shell passes is connected with a coil framework and the binding post of the circuit board. The shell with the horn shape is connected with the wiring terminal through the rivet, so that the circuit board and the wiring terminal are connected through rivet pulling, the rivet is stressed to be broken, and the circuit board and the shell are connected with the wiring terminal, so that the fastening effect is achieved. But the efficiency is lower when the related equipment in the prior art adopts rivet pulling for riveting.

Disclosure of Invention

Aiming at the problem that riveting and pressing efficiency is low in the prior art, the application provides hot expansion riveting and pressing equipment.

The application provides hot expansion riveting pressing equipment which comprises a first driving assembly, a second driving assembly, a jig assembly and an expansion riveting device, wherein the jig assembly is used for placing a workpiece, the jig assembly is provided with a riveting piece, a guide hole is formed in the axial direction of the riveting piece, the expansion riveting device comprises a pin which can be matched with the guide hole, the pin protrudes relative to a body of the expansion riveting device, the first driving assembly is used for driving the jig assembly to move along a first direction, and when the jig assembly moves to a preset position along the first direction, the second driving assembly drives the expansion riveting device to move along a second direction so that the pin is matched with the guide hole, and the pin can prop up the riveting piece along the radial direction so that the riveting piece and the workpiece are fixedly connected with each other.

Preferably, the rivet expansion device further comprises a heating component and a temperature sensor, wherein the heating component is used for heating the pin, the pin can heat the riveting piece, and the temperature sensor is used for detecting the temperature of the pin.

Preferably, the rivet expansion device further comprises a fixed base and a heat insulation shell, wherein the fixed base is respectively connected with the lower end of the pin and the lower end of the heating component, the heating component is sleeved outside the pin, and the upper end of the pin extends upwards compared with the upper end of the heating component; the heat insulation shell is sleeved outside the heating component, the heat insulation shell is arranged along the axial direction, and the lower end of the heat insulation shell is fixedly connected with the fixed base.

Preferably, the rivet expansion device further comprises a threaded connection plate, the threaded connection plate is provided with a threaded hole, the pin, the heating part, the temperature sensor and the base are all multiple, and the fixed base is fixedly connected with the threaded connection plate through the threaded hole;

the anti-collision block is further arranged on the threaded connecting plate, the anti-collision block and the heat insulation shell are arranged on the same side of the threaded connecting plate, and the height of the upper end part of the anti-collision block from the threaded connecting plate is larger than or equal to that of the upper end part of the heat insulation shell from the threaded connecting plate.

Preferably, the rivet is a petal-shaped rivet, the rivet is composed of a plurality of connecting pieces arranged along the axial direction, the connecting pieces surround to form the guide hole, and when the pin is matched with the guide hole, the pin is used for expanding the connecting pieces along the radial direction of the guide hole;

the jig assembly further comprises a separation plate, the lower end of the pin is connected with the separation plate, the guide hole penetrates through the pin and the separation plate, and the pin and the separation plate are integrally formed;

the riveting piece is matched with a mounting hole formed in the workpiece, the pin spreads the upper end of the riveting piece along the radial direction, and the upper end of the riveting piece is abutted to the upper surface of the workpiece, so that the riveting piece, the isolation plate and the workpiece are fixedly connected with each other.

Preferably, the jig assembly comprises a forming cover plate and a separation plate, wherein the separation plate is provided with a female die matched with the workpiece, the forming cover plate is provided with a male die matched with the female die, and the forming cover plate is used for pressing the separation plate and the workpiece through the male die;

the partition plate is provided with a riveting piece, the riveting piece is positioned between the forming cover plate and the partition plate, and the forming cover plate is provided with a limiting hole, so that when the pin is matched with the guide hole, the pin can pass through the limiting hole, and the riveting piece is limited through the limiting hole.

Preferably, a boss protruding along the axial direction is formed on the forming cover plate, an annular protruding block protruding along the axial direction is formed on the isolation plate, and the annular protruding block encloses to form a female die matched with the appearance of the workpiece; when the workpiece is placed in the female die, the boss can be embedded with the annular convex block, so that the forming cover plate presses the isolation plate and the workpiece;

the limiting hole axially penetrates through the boss, the upper end of the limiting hole is larger than the lower end of the limiting hole, the pin can penetrate through the limiting hole, the riveting piece is limited through the upper end of the limiting hole, the lower end of the limiting hole is matched with the upper end of the riveting piece, and when the pin is matched with the guide hole, the riveting piece is spread at the lower end of the limiting hole.

Preferably, the jig assembly further comprises a supporting member, a positioning column is arranged on the supporting member, positioning holes matched with the positioning column are formed in the forming cover plate and the isolating plate, and the isolating plate and the workpiece are installed between the supporting member and the forming cover plate in a stacked mode through the positioning column and the positioning holes.

Preferably, the first driving assembly comprises an electric motor and a conveyor belt connected with the electric motor, the electric motor drives the conveyor belt to rotate, the bearing piece can be placed on the conveyor belt, and the bearing piece is driven by the conveyor belt to enable the jig assembly to move to a preset position along a first direction.

Preferably, the hot expansion riveting pressing equipment comprises 2n spacing wheels and an installation frame, wherein the 2n spacing wheels and the installation frame are arranged in 2 rows and n columns, the installation frame is used for installing the first driving component and the second driving component, the 2 rows of spacing wheels are arranged at intervals and rotatably installed on the installation frame, the first driving component comprises two conveying belts and an electric motor capable of driving the conveying belts, the conveying belts are arranged at intervals and positioned between the 2 rows of spacing wheels, the jig components can be placed on the conveying belts, and when the conveying belts drive the jig components, the front ends and the rear ends of the jig components are respectively rotatably abutted to the spacing wheels.

The hot tension riveting pressing equipment provided by the application improves the tension riveting pressing efficiency.

Drawings

The foregoing and other objects, features and advantages of the application will be apparent from the following more particular description of preferred embodiments of the application, as illustrated in the accompanying drawings. Like reference numerals refer to like parts throughout the drawings, and the drawings are not intentionally drawn to scale on actual size or the like, with emphasis on illustrating the principles of the application.

Fig. 1 is a schematic structural diagram of a thermal expansion riveting press device provided in an embodiment;

fig. 2 is a schematic structural diagram of a fixture assembly and a rivet expansion device according to an embodiment;

FIG. 3 is a schematic view of a support and a spacer according to an embodiment;

FIG. 4 is a schematic view of a molded cover plate according to an embodiment;

FIG. 5 is a cross-sectional view A-A of FIG. 4;

FIG. 6 is a schematic view of the structure of the fixing base fixed on the threaded connection plate;

FIG. 7 is a schematic view of the pin, insulating housing and stationary base mated;

FIG. 8 is a cross-sectional view B-B of FIG. 7;

FIG. 9 is an exploded view of FIG. 7;

FIG. 10 is a schematic diagram of a structure of a rivet and a spacer according to an embodiment;

FIG. 11 is a schematic view in section C-C of FIG. 10;

FIG. 12 is a top view of FIG. 10;

FIG. 13 is a prior art rivet style schematic;

fig. 14 is a schematic diagram of a rivet method.

In the figure: the device comprises a first driving assembly 1, a second driving assembly 2, a jig assembly 3, a rivet device 4, a rivet piece 5a, a rivet piece 5b, a control box 6, a position sensor 7, a limiting wheel 8, a mounting rack 9, an operation display 10 and a workpiece 11;

an electric motor 101 and a conveyor belt 102; a pneumatic pump 201 and a piston rod 202; the forming cover plate 301, the limiting hole 302, the positioning hole 303, the boss 304, the isolation plate 305, the annular convex block 306, the mounting hole 307, the bearing 308 and the positioning column 309; pin 401, heating member 402, temperature sensor 403, screw connection plate 405, screw hole 406, crashproof block 407, heat insulation housing 408, signal transmission line 409, power line 410, fixing base 411, guide hole 501, and connector 502.

Wherein 5b is a rivet of the prior art.

Detailed Description

In order that the application may be readily understood, a more complete description of the application will be rendered by reference to the appended drawings.

It will be understood that when an element is referred to as being "connected" to another element, it can be directly connected to and integrated with the other element or intervening elements may also be present. The terms "mounted," "one end," "the other end," and the like are used herein for illustrative purposes only.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art. The terminology used in the description herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. The term "and/or" as used herein includes any and all combinations of one or more of the associated listed items.

Referring to fig. 1-12, in a preferred embodiment, the device comprises a first driving component 1, a second driving component 2, a jig component 3 and a rivet expansion device 4, wherein the jig component 3 is used for placing a workpiece 11, the jig component 3 is provided with a rivet 5a, the rivet 5a is provided with a guide hole 501 along the axial direction, the rivet expansion device 4 comprises a pin 401 which can be matched with the guide hole 501, the pin 401 protrudes relative to the body of the rivet expansion device 4, the first driving component 1 is used for driving the jig component 3 to move along a first direction, and when the jig component 3 moves to a preset position along the first direction, the second driving component 2 drives the rivet expansion device 4 to move along a second direction, so that the pin 401 is matched with the guide hole 501, the pin 401 expands the rivet 5a along the radial direction, and the rivet 5a and the workpiece 11 are fixedly connected with each other. The workpiece 11 includes products and primary products and materials to be processed, such as FPC. In order to overcome the problems of the conventional rivet pulling method, the application adopts a rivet pulling method (refer to fig. 14). The expansion riveting is a manner that part of materials of the riveting piece 5a are plastically deformed under the action of external force in the riveting process and form tight fit with a workpiece, so that reliable connection of two parts is realized. Since the riveting piece 5a is provided with the guide hole 501, the riveting piece 5a is hollow, the riveting piece 5a is preheated quickly, the riveting piece 5a and the workpiece 11 can be riveted in a tension riveting mode, and the riveting efficiency is improved. Lamination refers to the process of bonding a separator and a workpiece into a multi-layer sheet by applying pressure to the two. The hot expansion riveting pressing equipment refers to equipment which can perform expansion riveting and pressing operation on a workpiece and a riveting piece. The hot expansion riveting is to preheat the riveting piece 5a and then perform expansion riveting operation.

Referring to fig. 7-9, in the preferred embodiment, the rivet device 4 further includes a heating component 402 and a temperature sensor 403, the heating component 402 is used for heating the pin 401, the pin 401 can heat the rivet 5a, and the temperature sensor 403 is used for detecting the temperature of the pin 401. The temperature sensor 403 is annular and is fitted over the pin 401, and detects the temperature of the rivet 5a by detecting the temperature of the pin 401.

Referring to fig. 7 to 9, in a preferred embodiment, the upper and lower ends of the pin 401 are formed with coaxial tapered and cylindrical portions connected to each other, the tapered portions gradually narrow from the connection end toward the upper end, and the shape of the guide hole 501 is adapted to the shape of the pin 401 so that the rivet 5a is spread when the pin 401 is matched with the guide hole 501. Further, the upper end and the lower end of the pin 401 are respectively conical and cylindrical, and the upper end and the lower end of the guide hole 501 are respectively conical and cylindrical, so that the pin 401 gradually expands the rivet 5a when the pin 401 passes through the guide hole 501. The taper part of the application can comprise a rotating body which gradually narrows along the other end, and can be a taper part or a whole body or a frustum. The rivet 5a is hollow, the preheating is quick, and the rivet 5a pressed out through the matching of the pin 401 and the limiting hole 302 has stable shape. The pin 401 is matched with the guide hole 501 and the riveting piece 5a, so that burrs of the extruded riveting piece 5a are avoided.

Referring to fig. 7-9, in the preferred embodiment, the rivet expansion device 4 further includes a fixing base 411 and a heat insulation housing 408, the fixing base 411 is respectively connected with the lower end of the pin 401 and the lower end of the heating component 402, the heating component 402 is sleeved outside the pin 401, and the upper end of the pin 401 protrudes upwards compared with the upper end of the heating component 402; the heat insulation housing 408 is sleeved outside the heating part 402, the heat insulation housing 408 is arranged along the axial direction, and the lower end of the heat insulation housing 408 is fixedly connected with the fixed base 411. The insulating housing 408 is used to block heat generated by the heating element 402. The heating element 402 is typically a heater wire or tile, which is in communication with the power cord 410. The heating element 402 is energized to heat the pin 401.

Referring to fig. 6-9, in the preferred embodiment, the rivet expansion device 4 further includes a threaded connection plate 405, the threaded connection plate 405 is provided with a threaded hole 406, the pin 401, the heating element 402, the temperature sensor 403 and the base are all plural, and the fixing base 411 is fixedly connected with the threaded connection plate 405 through the threaded hole 406. By adjusting the mounting position of the fixing base 411 on the threaded connection plate 405, the rivet expansion device 4 can be adapted to workpieces 11 of different types. The plurality of rivets 5a on the workpiece 11 can be swaged at one time by the plurality of pins 401 and other members being engaged with each other.

Referring to fig. 2-3, in the preferred embodiment, an anti-collision block 407 is further disposed on the threaded connection plate 405, where the anti-collision block 407 is on the same side of the threaded connection plate 405 as the heat insulation housing 408, and the height of the upper end of the anti-collision block 407 from the threaded connection plate 405 is greater than or equal to the height of the upper end of the heat insulation housing 408 from the threaded connection plate 405. The highest position of the crashproof block 407 is generally higher than the highest position of the heat insulation shell 408, and the crashproof block 407 can crush other components of the crashproof rivet device 4 in the rivet expansion process.

Referring to fig. 7-9, in a preferred embodiment, the heating element 402 is connected to an external power device via a power cord 410, and the external power device inputs power to the heating element 402; the temperature sensor 403 outputs a temperature signal to the outside through a signal transmission line 409; the insulating housing 408 is provided with a wire passing hole through which the power wire 410 and the signal transmission wire 409 can pass from the outside of the insulating housing 408 to the inside of the insulating housing 408. The external power supply device can be a mains supply or a storage battery. Further, the power line 410 and the signal transmission line 409 may be directly led out of the insulating housing 408 from the connection end through the line hole, and the insulating housing 408 may further protect the power line 410 and the signal transmission line 409.

Referring to fig. 10-12, in the preferred embodiment, the rivet 5a is a petal-shaped rivet 5a, the rivet 5a is composed of a plurality of connectors 502 disposed along the axial direction, and the connectors 502 surround to form a guiding hole 501, when the pin 401 is mated with the guiding hole 501, the pin 401 expands the plurality of connectors 502 along the radial direction of the guiding hole 501. Furthermore, the rivet 5a is designed into a cross-shaped expandable structure, the guide hole 501 is matched with the shape of the pin 401, the pin 401 passes through the guide hole 501 to expand the rivet 5a, i.e. the connecting piece 502 of the rivet 5a is exploded and deformed towards four sides. The exploded connector 502 is formed in a cavity formed by the cover plate 301 and the partition plate 305.

Referring to fig. 10 to 12, in the preferred embodiment, the upper and lower ends of the guide hole 501 are formed with coaxial tapered and cylindrical portions, respectively, which are connected to each other, the tapered portions gradually narrow from the connection end toward the upper end, and the shape of the guide hole 501 is adapted to the shape of the pin 401. Preferably, the upper end of the guide hole 501 is a conical portion and the upper end is a cylindrical portion. The "upper and lower ends of the guide hole 501 are formed with interconnections, respectively" may mean that both are integrated in some embodiments, and are composed of two parts having different sizes from top to bottom.

Referring to fig. 10-12, in the preferred embodiment, the fixture assembly 3 further includes a spacer 305, the lower end of the pin 401 is connected to the spacer 305, and the guide hole 501 penetrates the pin 401 and the spacer 305, and the pin 401 and the spacer 305 are integrally formed. The pins 401 are integrally formed with the spacer 305 for convenience of use and simplified process. Further, the rivet 5a is matched with the mounting hole 307 formed on the workpiece 11, the pin 401 spreads the upper end of the rivet 5a along the radial direction, the upper end of the rivet 5a abuts against the upper surface of the workpiece 11, and the rivet 5a, the isolation plate 305 and the workpiece 11 are fixedly connected with each other. Preferably, the spacer 305 is a PC spacer 305.

Referring to fig. 2-4, in a preferred embodiment, the jig assembly 3 includes a molding cover 301 and a spacer 305, the spacer 305 is formed with a female die matching with the workpiece 11, the molding cover 301 is formed with a male die matching with the female die, and the molding cover 301 presses the spacer 305 and the workpiece 11 through the male die.

Referring to fig. 2-5, in a preferred embodiment, a riveting piece 5a is disposed on the isolation board 305, and the riveting piece 5a is located between the forming cover 301 and the isolation board 305, and the forming cover 301 is provided with a limiting hole 302, so that when the pin 401 is matched with the guiding hole 501, the pin 401 can pass through the limiting hole 302, and the riveting piece 5a is limited by the limiting hole 302. The position of the limiting hole 302 corresponds to the position of the mounting hole 307 on the spacer 305, and the pin 401 can pass through the limiting hole 302 while the limiting hole 302 blocks the rivet 5a from passing through the forming cover 301. In the expansion riveting process, the pin 401 can pass through the limiting hole 302, and meanwhile, the diameter of the limiting hole 302 is smaller than that of the riveting piece 5a, so that the riveting piece 5a cannot pass through the forming cover plate 301, and the riveting piece 5a can be formed at the lower end of the limiting hole 302 through the cooperation of the pin 401 and the forming cover plate 301, so that the workpiece 11 and the riveting piece 5a are mutually fixed.

Referring to fig. 2-5, in a preferred embodiment, a boss 304 protruding along an axial direction is formed on a forming cover 301, an annular projection 306 protruding along the axial direction is formed on a partition 305, and the annular projection 306 encloses a die matching with the shape of the workpiece 11; when the workpiece 11 is placed in the female die, the boss 304 can be embedded with the annular bump 306, so that the molded cover 301 presses the isolation plate 305 and the workpiece 11. Further, a boss 304 protruding along the axial direction is formed on the forming cover plate 301, an annular projection 306 protruding along the axial direction is formed on the isolation plate 305, and the annular projection 306 encloses to form a female die adapted to the shape of the workpiece 11; when the workpiece 11 is placed in the female die, the boss 304 can be embedded with the annular bump 306, and the formed cover plate 301 and the isolation plate 305 can press the workpiece 11. Still further, the number of the annular protruding blocks 306 of the isolation plate 305 is three, one of the annular protruding blocks 306 is located at the front end of the isolation plate 305, two of the annular protruding blocks 306 are located at the rear end of the isolation plate 305, the two annular protruding blocks 306 at the rear end are arranged at left and right intervals, the two annular protruding blocks 306 at the rear end are arranged at intervals with the annular protruding blocks 306 at the front end, a step with lower height is further arranged between the two annular protruding blocks 306 at the rear end and the annular protruding blocks 306 at the front end, four boss 304 are arranged on the forming cover plate 301, two boss 304 are located at the rear end of the forming cover plate 301, the two boss 304 are arranged at left and right intervals, the other two boss 304 are respectively arranged at intervals to form the middle part and the front end of the cover plate 301, and the boss 304 at the middle part and the boss 304 at the front end are arranged at intervals. The middle boss 304 is spaced from the front boss 304 by a distance that matches the thickness (in the fore-aft direction) of the front annular projection 306. The two bosses 304 at the rear end are spaced apart from the boss 304 in the middle by a distance that matches the thickness (in the front-to-rear direction) of the annular boss 306 at the rear end.

Referring to fig. 5, in the preferred embodiment, the limiting hole 302 axially penetrates the boss 304, the upper end of the limiting hole 302 is larger than the lower end, so that the pin 401 can pass through the limiting hole 302, the riveting piece 5a is limited by the upper end of the limiting hole 302, the lower end of the limiting hole 302 is matched with the upper end of the riveting piece 5a, and when the pin 401 is matched with the guiding hole 501, the riveting piece 5a is spread at the lower end of the limiting hole 302. The shape of the end of the limiting hole 302 close to the boss 304 is generally in a truncated cone shape, and the shape of the upper end of the riveting piece 5a is in a truncated cone shape, and the end of the limiting hole 302 close to the boss 304 is slightly larger than the upper end of the riveting piece 5a, so that the riveting piece 5a can be formed at the position of the limiting hole 302 in a swelling riveting mode.

Referring to fig. 2-3, in a preferred embodiment, the jig assembly 3 further includes a supporting member 308, a positioning column 309 is disposed on the supporting member 308, positioning holes 303 matching with the positioning column 309 are formed on the forming cover plate 301 and the separating plate 305, and the separating plate 305 and the workpiece 11 are stacked and mounted between the supporting member 308 and the forming cover plate 301 through the positioning column 309 and the positioning hole 303. Further, the positioning holes 303 are located near four corners of the molding cover 301; the four corners of the isolation plate 305 are provided with corresponding positioning holes 303.

Referring to fig. 2 to 3, in a preferred embodiment, the supporting member 308 is further provided with a through hole, the through hole of the supporting member 308 is matched with the guide hole 501, and when the second driving assembly 2 drives the rivet device 4 to move along the second direction, the pin 401 can sequentially pass through the through hole of the supporting member 308 and the guide hole 501. Preferably, the through holes of the supporter 308 are in one-to-one correspondence with the guide holes 501.

Referring to fig. 1, in a preferred embodiment, the first driving assembly 1 includes an electric motor 101 and a conveyor belt 102 connected to the electric motor 101, the electric motor 101 drives the conveyor belt 102 to rotate, the supporting member 308 can be placed on the conveyor belt 102, and the supporting member 308 is driven by the conveyor belt 102 to move the jig assembly 3 to a preset position along a first direction. When the electric motor 101 drives the conveying belt 102 to rotate, the jig assembly 3 moves along the horizontal direction, the guide hole 501 of the riveting piece 5a is aligned with the pin 401, the second driving assembly 2 drives the rivet expanding device 4 to jack up the jig assembly 3, the pin 401 enables the riveting piece 5a to be propped up along the guide hole 501, the jig assembly 3 is blocked when the jig assembly 3 is jacked up to the top of the mounting frame 9, and the isolation plate 305 and the workpiece 11 are pressed under the pressure.

Referring to fig. 1, in a preferred embodiment, the thermal expansion riveting press device further includes a position sensor 7 and a control box 6, the control box 6 is respectively connected with the first driving component 1, the second driving component 2 and the position sensor 7, the position sensor 7 is used for detecting the position information of the jig component 3 and the position information of the expansion riveting device 4, and the control box 6 controls the movement of the first driving component 1 and the second driving component 2 through the position information detected by the position sensor 7. Further, the second driving assembly 2 comprises a pneumatic pump 201 and a piston rod 202, the piston rod 202 is connected with the rivet expanding device 4, and the pneumatic pump 201 drives the piston rod 202 and the rivet expanding device 4 connected with the piston rod 202 to move through inflation and deflation.

Referring to fig. 1, in a preferred embodiment, the thermal expansion riveting pressing device includes 2n spacing wheels 8 arranged in 2 rows×n columns and a mounting frame 9, the mounting frame 9 is used for mounting a first driving component 1 and a second driving component 2, the 2 rows of spacing wheels 8 are arranged at intervals back and forth and rotatably mounted on the mounting frame 9, the first driving component 1 includes two conveying belts 102 and an electric motor 101 capable of driving the conveying belts 102, the conveying belts 102 are arranged at intervals back and forth and are located between the 2 rows of spacing wheels 8, the jig component 3 can be placed on the conveying belts 102, and when the conveying belts 102 drive the jig component 3, the front end and the rear end of the jig component 3 are respectively rotatably abutted with the spacing wheels 8. The limiting wheel 8 can enable the jig assembly 3 to move horizontally according to a preset first direction, so that the jig assembly 3 can be ensured to move to a preset position accurately.

Referring to fig. 1, in a preferred embodiment, the thermal expansion riveting press device further includes an operation display 10, the operation display 10 is located at the top end of the mounting frame 9, the operation display 10 is connected to the control box 6, the operation display 10 is used for inputting operation instructions, and the control box 6 controls the movement of the first driving component 1 and the second driving component 2 according to the inputted operation instructions.

When the thermal expansion riveting pressing equipment is used, a workpiece 11 is placed on a separation plate 305 integrally formed with a riveting piece 5a, and a formed cover plate 301 covers the separation plate 305, so that the workpiece 11 is fixed relative to a jig assembly 3; the jig assembly 3 is placed on the conveyor belt 102, the conveyor belt 102 drives the jig assembly 3 to move left and right, when the position sensor 7 detects that the positions of the jig assembly 3 and the rivet expanding device 4 are aligned, the control box 6 controls the electric motor 101 to stop, at the moment, rivet expanding and pressing operations are carried out, the control box 6 controls the heating part 402 to be electrified so that the temperature of the pin 401 is increased, and then the riveting piece 5a is heated; the control box 6 controls the heated temperature of the riveting piece 5a through the temperature detected by the temperature sensor 403, when the riveting piece 5a reaches the preset temperature, the control box 6 controls the movement of the second driving assembly 2, so that the rivet expanding device 4 moves along the direction of the jig assembly 3 and jacks up the jig assembly 3, and when the rivet expanding device moves to the top of the mounting rack 9, the mounting rack 9 stops the jig assembly 3 from continuously moving upwards, and the isolation plate 305 and the workpiece 11 are pressed under the pressure action. The pin 401 opens the rivet 5a, and fixedly connects the rivet 5a, the spacer 305, and the workpiece 11 to each other. After the step of riveting and pressing is completed, the control box 6 controls the second driving component 2 to move, so that the riveting device 4 and the jig component 3 descend, when the jig component 3 arrives on the conveying belt 102, the conveying belt 102 continues to drive the jig component 3 to move left and right to the next process, and the workpiece 11 after riveting and pressing can be taken out after completion.

In the present application, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.

In the description of the present specification, a description of the terms "preferred embodiment," "further embodiment," "other embodiments," or "specific examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the application. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, the different embodiments or examples described in this specification and the features of the different embodiments or examples may be combined and combined by those skilled in the art without contradiction.

While embodiments of the present application have been shown and described above, it will be understood that the above embodiments are illustrative and not to be construed as limiting the application, and that variations, modifications, alternatives and variations may be made to the above embodiments by one of ordinary skill in the art within the scope of the application.

Claims (9)

1. The hot expansion riveting pressing equipment is characterized by comprising a first driving assembly, a second driving assembly, a jig assembly and an expansion riveting device, wherein the jig assembly is used for placing a workpiece, the jig assembly is provided with a riveting piece, a guide hole is formed in the axial direction of the riveting piece, the expansion riveting device comprises a pin which can be matched with the guide hole, the pin is protruded relative to a body of the expansion riveting device, the first driving assembly is used for driving the jig assembly to move along a first direction, when the jig assembly moves to a preset position along the first direction, the second driving assembly drives the expansion riveting device to move along a second direction so that the pin is matched with the guide hole, and the pin can prop up the riveting piece along the radial direction so that the riveting piece and the workpiece are fixedly connected with each other;

the riveting piece is a petal-shaped riveting piece, the riveting piece is composed of a plurality of connecting pieces arranged along the axial direction, the connecting pieces surround to form the guide hole, and when the pin is matched with the guide hole, the pin is used for expanding the connecting pieces along the radial direction of the guide hole;

the jig assembly further comprises a separation plate, the lower end of the pin is connected with the separation plate, the guide hole penetrates through the pin and the separation plate, and the pin and the separation plate are integrally formed;

the riveting piece is matched with a mounting hole formed in the workpiece, the pin spreads the upper end of the riveting piece along the radial direction, and the upper end of the riveting piece is abutted to the upper surface of the workpiece, so that the riveting piece, the isolation plate and the workpiece are fixedly connected with each other.

2. The thermal tension riveting press-fit equipment as recited in claim 1, wherein the tension riveting device further comprises a heating component and a temperature sensor, wherein the heating component is used for heating the pin, the pin can heat the riveting piece, and the temperature sensor is used for detecting the temperature of the pin.

3. The hot expansion riveting pressing equipment as claimed in claim 2, wherein the expansion riveting device further comprises a fixed base and a heat insulation shell, the fixed base is respectively connected with the lower end of the pin and the lower end of the heating component, the heating component is sleeved outside the pin, and the upper end of the pin extends upwards than the upper end of the heating component; the heat insulation shell is sleeved outside the heating component, the heat insulation shell is arranged along the axial direction, and the lower end of the heat insulation shell is fixedly connected with the fixed base.

4. The hot rivet pressing device as set forth in claim 3, wherein the rivet pressing device further comprises a threaded connection plate, the threaded connection plate is provided with a threaded hole, the pin, the heating component, the temperature sensor and the base are all multiple, and the fixed base is fixedly connected with the threaded connection plate through the threaded hole;

the anti-collision block is further arranged on the threaded connecting plate, the anti-collision block and the heat insulation shell are arranged on the same side of the threaded connecting plate, and the height of the upper end part of the anti-collision block from the threaded connecting plate is larger than or equal to that of the upper end part of the heat insulation shell from the threaded connecting plate.

5. The thermal expansion riveting pressing equipment as claimed in claim 1, wherein the jig assembly comprises a forming cover plate and a separation plate, the separation plate is provided with a female die matched with a workpiece, the forming cover plate is provided with a male die matched with the female die, and the forming cover plate presses the separation plate and the workpiece through the male die;

the partition plate is provided with a riveting piece, the riveting piece is positioned between the forming cover plate and the partition plate, and the forming cover plate is provided with a limiting hole, so that when the pin is matched with the guide hole, the pin can pass through the limiting hole, and the riveting piece is limited through the limiting hole.

6. The thermal expansion riveting press-fit equipment as claimed in claim 5, wherein a boss protruding along the axial direction is formed on the forming cover plate, an annular protruding block protruding along the axial direction is formed on the isolation plate, and the annular protruding block is enclosed to form a female die matched with the shape of the workpiece; when the workpiece is placed in the female die, the boss can be embedded with the annular convex block, so that the forming cover plate presses the isolation plate and the workpiece;

the limiting hole axially penetrates through the boss, the upper end of the limiting hole is larger than the lower end of the limiting hole, the pin can penetrate through the limiting hole, the riveting piece is limited through the upper end of the limiting hole, the lower end of the limiting hole is matched with the upper end of the riveting piece, and when the pin is matched with the guide hole, the riveting piece is spread at the lower end of the limiting hole.

7. The thermal expansion riveting press fit equipment as claimed in claim 5, wherein the jig assembly further comprises a supporting member, a positioning column is arranged on the supporting member, positioning holes matched with the positioning column are formed in the forming cover plate and the isolating plate, and the isolating plate and the workpiece are installed between the supporting member and the forming cover plate in a stacked mode through the positioning column and the positioning holes.

8. The thermal expansion riveting press fitting apparatus according to claim 7, wherein the first driving assembly comprises an electric motor and a conveyor belt connected to the electric motor, the electric motor drives the conveyor belt to rotate, the supporting member is placed on the conveyor belt, and the supporting member is driven by the conveyor belt to move the jig assembly to a preset position along a first direction.

9. The thermal expansion riveting pressing equipment according to claim 1, wherein the thermal expansion riveting pressing equipment comprises 2n limiting wheels and a mounting frame, wherein the 2n limiting wheels and the mounting frame are arranged in 2 rows and n columns, the mounting frame is used for mounting the first driving component and the second driving component, the 2 rows of limiting wheels are arranged at intervals front and back and rotatably mounted on the mounting frame, the first driving component comprises two conveying belts and an electric motor capable of driving the conveying belts, the conveying belts are arranged at intervals front and back and are positioned between the 2 rows of limiting wheels, the jig component can be placed on the conveying belts, and when the conveying belts drive the jig component, the front end and the rear end of the jig component are respectively rotatably abutted with the limiting wheels.