CN220480132U - In-mold riveting stud device - Google Patents

Abstract

The application discloses rivet double-screw bolt device in mould relates to automation equipment technical field, including lower mould subassembly, go up mould subassembly, thimble mechanism, positioning mechanism and punch mechanism, thimble mechanism butt double-screw bolt's one end, positioning mechanism includes supporting seat and a pair of location slider, a pair of location slider forms the holding groove of holding double-screw bolt when closed, forms the dodging space of punching press double-screw bolt when opening, punch mechanism includes fixed block and punch, punch butt double-screw bolt's the other end to movably connect in the fixed block for open a pair of location slider, and realize the punching press to the double-screw bolt. The in-mold riveting stud device realizes comprehensive automatic production effect, can meet the mass production requirements of enterprises, has high consistency of produced products and has better actual assembly effect; meanwhile, the riveting process is not limited by the traditional riveting from top to bottom, the process arrangement of products is not limited due to the riveting direction of the stud, and the flexibility is high.

Description

In-mold riveting stud device

Technical Field

The application relates to the technical field of automatic equipment, in particular to an in-mold riveting stud device.

Background

As is well known, the press riveting process is a fixed connection process, and the principle of the press riveting process is to press two or more metal pieces together by using pressure to form firm connection, so that the press riveting process is often suitable for plate fixing studs which cannot be welded, such as riveting studs on hardware products.

In the prior art, the stud is riveted on the hardware product by manually firstly placing the stud at a position on the product where the stud is required to be riveted, then placing the product with the stud placed in a mould, and then riveting the stud on the product by a press machine, so that the combination of the stud and the product is realized. However, the process of riveting the stud is manually completed, the production efficiency is low, the quality is difficult to ensure, meanwhile, the existing press riveting process is limited by the traditional riveting from top to bottom due to the requirement of the appearance of the stud, the flexibility is poor, and due to the fact that the press riveting process is stamping, certain potential safety hazards exist in manual operation, the production safety is not improved, and the manufacturing cost of enterprises is increased.

Accordingly, there is a need in the art for an in-mold rivet stud apparatus that provides improved safety, production efficiency and flexibility.

Disclosure of Invention

The purpose of the application is to provide an in-mold riveting stud device, which can improve the safety, the production efficiency and the flexibility of a press riveting process.

To achieve the above object, the present application provides an in-mold rivet stud device, including:

the lower die assembly is used for fixing a product to be riveted;

an upper die assembly disposed toward the lower die assembly for movement relative thereto in a first direction;

the ejector pin mechanism is arranged on the upper die assembly, and is used for penetrating through a punching hole of a product to be riveted and abutting one end of the stud when the upper die assembly moves along the first direction and is close to the lower die assembly;

the positioning mechanism locates the lower mould subassembly for the positioning stud includes:

the support seat is movably connected to the lower die assembly and is used for moving relative to the lower die assembly along a first direction;

the positioning slide blocks are slidably connected to the supporting seat and used for sliding relative to the supporting seat along a second direction so as to form an accommodating groove for accommodating the stud when closed and form an avoidance space for punching the stud when opened;

the drift mechanism locates the lower mould subassembly for to the double-screw bolt punching press, include:

a fixed block;

the punch is abutted to the other end of the stud and movably connected with the fixed block and used for moving relative to the fixed block along a first direction so as to press the pair of positioning sliding blocks to open the pair of positioning sliding blocks and realize the stamping of the stud when the supporting seat moves along the first direction and is close to the fixed block.

In some embodiments, the lower die assembly comprises a lower die holder, a lower backing plate arranged on the lower die holder, and a lower die plate arranged on the lower backing plate;

the punch mechanism further comprises a first reset elastic piece and a pressing block, the pressing block and the fixing block are fixed in the lower die holder and the lower base plate, the pressing block is located on one side, far away from the upper die assembly, of the fixing block, the first reset elastic piece is arranged in the pressing block, two ends of the first reset elastic piece are respectively connected with the punch and the pressing block, so that elastic force is provided for the punch, and the punch has a trend of being far away from the pressing block.

In some embodiments, the supporting seat is arranged in the lower die plate, limiting blocks are arranged on two sides of the supporting seat, the supporting seat is connected with a second reset elastic piece, and the second reset elastic piece penetrates through the lower base plate and is connected with the lower die base so as to provide elastic force for the supporting seat, so that the supporting seat has a trend of being far away from the lower die base.

In some embodiments, the positioning mechanism further includes a pair of slide guide seats, the pair of slide guide seats are disposed in the supporting seat, the pair of positioning slide blocks are respectively slidably disposed in the pair of slide guide seats, and a third reset elastic member is connected between the positioning slide block and the corresponding slide guide seat, and the third reset elastic member is used for providing elastic force for the corresponding positioning slide block, so that the positioning slide block has a trend of being far away from the corresponding slide guide seat.

In some embodiments, a buffer block is disposed between the pair of positioning sliders, and the buffer block is disposed in the supporting seat and is used for buffering the pair of positioning sliders when the pair of positioning sliders receives the elastic force of the corresponding third reset elastic piece.

In some embodiments, the punch mechanism further comprises a slotting tool disposed on the fixed block;

the bottoms of the pair of positioning sliding blocks are respectively connected with a pair of sliding block inserts, and the opposite sides of the pair of sliding block inserts are respectively provided with a guide surface;

when the supporting seat moves along the first direction and is close to the fixed block, the guide surfaces on the pair of sliding block inserts contact the slotting tool, so that the pair of sliding block inserts and the pair of positioning sliding blocks move to two sides under the extrusion action of the slotting tool, and the pair of positioning sliding blocks are opened.

In some embodiments, the upper die assembly comprises an upper stripper plate, the ejector pin mechanism comprises a fixing piece and a positioning ejector pin arranged in the upper stripper plate, and one end of the positioning ejector pin extends out of the fixing piece, so that the positioning ejector pin passes through a punching hole of a product to be riveted and abuts against one end of the stud when the upper die assembly moves along a first direction and is close to the lower die assembly.

In some embodiments, the upper die assembly further comprises an upper die holder and an upper base plate connected with the upper die holder, wherein an upper clamping plate is arranged at one end of the upper base plate, which is far away from the upper die holder, a stop plate is arranged at one end of the upper clamping plate, which is far away from the upper base plate, and an upper disengaging plate is arranged at one end of the stop plate, which is far away from the upper clamping plate;

the stop plate is internally provided with a fourth reset elastic piece, the upper base plate, the upper clamping plate and the stop plate are internally provided with an elastic piece back block, two ends of the fourth reset elastic piece are respectively connected with the elastic piece back block and the positioning thimble, and the fourth reset elastic piece is used for providing elastic force for the positioning thimble, so that the positioning thimble has a trend of being far away from the upper die holder.

In some embodiments, the lower die assembly is connected with a plurality of ejector pins for supporting the product to be riveted such that the product to be riveted is fixed between the lower die assembly and the upper die assembly.

In some embodiments, the lower die assembly further comprises a feeding track, wherein the feeding track is arranged on the lower die assembly and extends to the accommodating groove so as to convey the stud into the accommodating groove.

For above-mentioned background art, the in-mold riveting double-screw bolt device that this application embodiment provided includes lower mould subassembly, last mould subassembly, thimble mechanism, positioning mechanism and punch mechanism, and further, positioning mechanism includes supporting seat and a pair of location slider, and punch mechanism includes fixed block and punch, and thimble mechanism and punch butt double-screw bolt upper and lower both ends respectively to realize the punching press to the double-screw bolt under the closed mould state. The method comprises the steps of fixing a product to be riveted onto a lower die assembly before stamping, conveying a stud into a containing groove formed by a pair of positioning sliding blocks, placing the stud on a punch to position the stud, driving a thimble mechanism to move downwards when the upper die assembly moves along a first direction and is close to the lower die assembly, enabling the thimble mechanism to pass through a stamping hole of the product to be riveted and abut against one end of the stud in the moving process, pressing the punch to move continuously until the punch reaches a limiting position of a fixed block, forming up-down opposite pressing of the stud, further achieving a secondary positioning effect on the stud, then enabling the upper die assembly to move along a direction close to the lower die assembly and contact the product to be riveted, enabling a supporting seat to be pressed downwards by the product to enable the supporting seat to move downwards, enabling the pair of positioning sliding blocks to slide along a second direction (perpendicular to the first direction) respectively under the extrusion effect of the punch in the moving process, enabling the stud to pass through the stamping hole of the product to be riveted, and achieving avoidance of the stud in the closing state of the punch, and achieving combination of the stud and the product to be riveted.

By adopting the in-mold riveting stud device provided by the embodiment of the application, on one hand, the comprehensive automatic production effect is realized, compared with the traditional manual riveting, the speed is faster, the efficiency is higher, the mass production requirement of enterprises can be met, manual operation by personnel is not needed, the labor intensity of users can be effectively reduced, the labor cost of the enterprises is reduced, the economic benefit is improved, meanwhile, the consistency of products in mechanical automatic production batches is high, and the actual assembly effect of the products is better; on the other hand, the punch mechanism is arranged on the lower die assembly, the punch of the punch mechanism automatically rivets the stud from bottom to top, namely, the stud is riveted to a product to be riveted through the upper punch of the lower die, the riveting process is not limited by the traditional riveting from top to bottom, the process arrangement of the product is not limited due to the riveting direction of the stud, and the flexibility is high.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings that are required to be used in the embodiments or the description of the prior art will be briefly described below, and it is obvious that the drawings in the following description are only embodiments of the present application, and that other drawings may be obtained according to the provided drawings without inventive effort to a person skilled in the art.

FIG. 1 is a schematic diagram of a device for riveting a stud in a mold in an open state in an embodiment of the present application;

FIG. 2 is a schematic view of a device for in-mold riveting of studs in a closed mold in an embodiment of the present application;

FIG. 3 is a side view of an in-mold stud riveting device in an embodiment of the present application;

FIG. 4 is an exploded view of the ejector pin mechanism, positioning mechanism and punch mechanism of the in-mold rivet stud device of FIG. 1;

FIG. 5 is a schematic view of the overall structure of the punch mechanism of FIG. 4;

FIG. 6 is a schematic diagram of the whole structure of the positioning mechanism in FIG. 4;

FIG. 7 is a schematic view of an assembly of a positioning slide and a slide insert in the positioning mechanism of FIG. 6.

Wherein:

100-lower die components, 110-lower die holders, 120-lower base plates and 130-lower templates;

200-upper die components, 210-upper die holders, 220-upper base plates, 230-upper clamping plates, 240-stop plates and 250-upper stripper plates;

300-thimble mechanism, 310-fixing piece, 320-positioning thimble, 330-fourth reset elastic piece and 340-elastic piece back piece;

400-positioning mechanism, 410-supporting seat, 420-positioning slide block, 430-holding groove, 440-limiting block, 450-second reset elastic piece, 460-slide block guide seat, 461-sliding positioning groove, 470-third reset elastic piece, 480-buffer block, 490-slide block insert and 491-guide surface;

500-punch mechanism, 510-fixed block, 520-slotting tool, 530-punch, 540-first reset elastic piece and 550-pressing block;

600-feeding tracks;

700-stud.

Detailed Description

The following description of the embodiments of the present application will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all, of the embodiments of the present application. All other embodiments, which can be made by one of ordinary skill in the art without undue burden from the present disclosure, are within the scope of the present disclosure.

In order to better understand the aspects of the present application, a further detailed description of the present application will be provided below with reference to the accompanying drawings and detailed description.

The terms "upper end, lower end, left side, right side" and the like are defined based on the drawings of the specification.

Referring to fig. 1 and 2, the in-mold riveting stud device provided in the embodiment of the present application includes a lower mold assembly 100, an upper mold assembly 200, a thimble mechanism 300, a positioning mechanism 400 and a punch mechanism 500.

The lower die assembly 100 is used for fixing a product to be riveted, the upper die assembly 200 is arranged towards the lower die assembly 100, the upper die assembly 200 is used for moving relative to the lower die assembly 100 along a first direction (a vertical direction shown in fig. 1), so that the upper die assembly 200 is close to or far away from the lower die assembly 100, the thimble mechanism 300 is arranged on the upper die assembly 200, the thimble mechanism 300 is used for penetrating a punching hole of the product to be riveted and abutting one end of the stud 700 when the upper die assembly 200 moves along the first direction and close to the lower die assembly 100, the positioning mechanism 400 is arranged on the lower die assembly 100, the positioning mechanism 400 is used for positioning the stud 700, the punch mechanism 500 is arranged on the lower die assembly 100, and the punch mechanism 500 is used for punching the stud 700.

It should be noted that, the lower die assembly 100 is connected with a plurality of pins for supporting the product to be riveted, so that the product to be riveted is fixed between the lower die assembly 100 and the upper die assembly 200. In the mold opening state, the upper mold assembly 200 and the ejector pin mechanism 300 thereon are positioned above the product to be riveted; in the die closing state, the stud 700 passes through a punching hole of a product to be riveted, and the upper end and the lower end of the stud 700 are respectively abutted by the ejector pin mechanism 300 and the punch mechanism 500, so that the stud 700 is punched.

Further, referring to fig. 4 to 7 together, the positioning mechanism 400 includes a support base 410 and a pair of positioning sliders 420, the support base 410 is movably connected to the lower die assembly 100, the support base 410 is used for moving relative to the lower die assembly 100 along a vertical direction, the pair of positioning sliders 420 is slidably connected to the support base 410, the pair of positioning sliders 420 includes two positioning sliders 420 oppositely disposed, and the two positioning sliders 420 are used for sliding relative to the support base 410 along a second direction (horizontal direction as shown in fig. 1), so that the two positioning sliders 420 form a containing groove 430 for containing the stud 700 when closed and form a avoiding space for the stamped stud 700 when opened; the punch mechanism 500 includes a fixed block 510 and a punch 530, the fixed block 510 is used for limiting the punch 530, the punch 530 is abutted against the other end of the stud 700, the punch 530 is movably connected to the fixed block 510, the punch 530 is used for moving relative to the fixed block 510 along a vertical direction, so as to press a pair of positioning sliding blocks 420 when the supporting seat 410 moves downwards relative to the lower die assembly 100, the pair of positioning sliding blocks 420 are opened, and the stud 700 is punched.

It can be appreciated that before stamping, the product to be riveted is fixed on the lower die assembly 100, then the stud 700 is conveyed into the accommodating groove 430 formed by the pair of positioning sliding blocks 420 and is placed on the punch 530, so as to position the stud 700, then the ejector pin mechanism 300 is driven to move downwards when the upper die assembly 200 moves towards the lower die assembly 100, in the moving process, the ejector pin mechanism 300 passes through the stamping hole of the product to be riveted and abuts against one end of the stud 700, the other end of the stud 700 presses the punch 530 to continue moving until the punch 530 reaches the limit position of the fixed block 510, so that the upper and lower facing pressing of the stud 700 can be formed, the secondary positioning effect is further achieved on the stud 700, then the upper die assembly 200 continues to move towards the lower die assembly 100 and contact the product to be riveted, the support seat 410 is pressed downwards, the support seat 410 moves downwards, and in the descending process, the pair of positioning sliding blocks 420 slide towards two sides respectively (the pair of positioning sliding blocks 420 contact the punch 530 in the descending process, and under the extrusion effect of the punch 530, the pair of positioning sliding blocks 420 respectively contact the two sides of the stud 700, so that the upper and lower die assembly 700 can form the opposite sides of the stud 700 to be riveted, and the stud 700 is punched, and the state 700 is punched, and the stud 700 is closed is realized.

Adopt the mould in riveting double-screw bolt device that this application embodiment provided, on the one hand, realized comprehensive automated production effect, compare traditional manual riveting, the speed is faster higher efficiency, can satisfy the mass production demand of enterprise to need not to use the personnel to carry out manual operation, can effectively reduce user's intensity of labour, be favorable to reducing the human cost of enterprise, improve economic benefits, the product uniformity in the mechanical automation production batch is high simultaneously, and the product actual assembly effect is better. On the other hand, the punch mechanism 500 is arranged on the lower die assembly 100, the punch 530 of the punch mechanism 500 automatically rivets the stud 700 from bottom to top, namely, the stud 700 is riveted to a product to be riveted through the upper punch of the lower die, the riveting process is not limited by the traditional riveting from top to bottom, the process arrangement of the product is not limited due to the riveting direction of the stud 700, and the flexibility is high.

In some embodiments, the lower die assembly 100 includes a lower die holder 110, a lower pad 120 and a lower die plate 130, wherein the lower pad 120 is disposed at an upper end of the lower die holder 110, the lower die plate 130 is disposed at an upper end of the lower pad 120, and the lower die holder 110 is used for supporting the overall structure of the lower die assembly 100.

To facilitate the assembly of the punch 530, the fixing block 510 is provided with a through hole, and the punch 530 is provided in the through hole and is movable in the axial direction of the through hole.

Further, the punch mechanism 500 further includes a first reset elastic member 540 and a pressing block 550, wherein the pressing block 550 and the fixing block 510 are fixed in the lower die holder 110 and the lower base plate 120, and the pressing block 550 is located at one side of the fixing block 510 far away from the upper die assembly 200 and is fixed by a screw, so as to achieve the purpose of quick disassembly, wherein the punch 530 is arranged on the fixing block 510, and in an initial state, the punch 530 extends into the lower die plate 130. The first reset elastic piece 540 is arranged in the pressing block 550, the pressing block 550 is provided with a mounting hole, the first reset elastic piece 540 is arranged in the mounting hole, and two ends of the first reset elastic piece 540 are respectively connected with the punch 530 and the pressing block 550.

In this way, after the punch 530 moves downward, the first reset elastic member 540 can provide an elastic force to the punch 530, so that the punch 530 has a movement trend away from the pressing block 550.

Of course, according to practical needs, the first return elastic member 540 may be a first return spring, the mounting hole of the pressing block 550 is a spring hole, and when the punch 530 moves downward, the first return spring is compressed, and the first return spring can provide an elastic force to the punch 530, so that the punch 530 has a movement trend away from the pressing block 550.

In some embodiments, the support base 410 is disposed in the lower die plate 130, the two sides of the support base 410 are respectively provided with a limiting block 440, the support base 410 is connected with a second reset elastic member 450, the second reset elastic member 450 passes through the lower pad 120 and is connected to the lower die holder 110, and when the support base 410 moves downward, the second reset elastic member 450 is used for providing an elastic force to the support base 410, so that the support base 410 has a tendency to be far away from the lower die holder 110.

Specifically, the second return elastic member 450 may be a second return spring, four spring holes are provided in the lower die holder 110, the spring holes are provided with the second return springs in a one-to-one correspondence manner, the four second return springs are correspondingly propped against four corner positions of the supporting seat 410, after the stamping is completed, the supporting seat 410 is under the elastic force of the second return spring, so that the supporting seat 410 is reset upwards, wherein the limiting block 440 is used for limiting the supporting seat 410, which is beneficial to ensuring that the supporting seat 410 moves upwards along a given direction, and preventing deviation of the upward moving process of the supporting seat 410.

In some embodiments, the positioning mechanism 400 further includes a pair of slide guide holders 460, the pair of slide guide holders 460 are disposed in the support base 410, the support base 410 is a hollow structure, and the pair of positioning slides 420 are slidably disposed in the pair of slide guide holders 460, respectively. Of course, the pair of positioning slides 420 includes two opposing positioning slides 420, and the pair of slide guides 460 includes two opposing slide guides 460.

In this embodiment, the two slide guide holders 460 are provided with sliding positioning slots 461, and the sliding positioning slots 461 limit the sliding positions of the positioning slide 420, so as to improve the accuracy and the use stability of the integral riveting.

In addition, a third reset elastic member 470 is connected between the positioning slide 420 and the corresponding slide guide seat 460, and the third reset elastic member 470 is used for providing an elastic force to the corresponding positioning slide 420, so that the positioning slide 420 has a trend of being away from the corresponding slide guide seat 460. That is, the two positioning sliders 420 have a tendency to be gathered under the elastic force of the third return elastic member 470.

Specifically, the two positioning sliding blocks 420 are arranged in opposite positions, a gap is formed at one side of the two positioning sliding blocks 420, which is close to each other, and the third reset elastic member 470 is a compression spring, so that the two positioning sliding blocks 420 can move in position under the action of the compression spring, and when the two positioning sliding blocks 420 are in contact, the two gaps are combined to form the accommodating groove 430 for accommodating the stud 700.

In some embodiments, a buffer block 480 is disposed between the two positioning sliders 420, the buffer block 480 is disposed in the supporting seat 410, and when the two positioning sliders 420 are respectively acted by the elastic force of the corresponding compression springs, the buffer block 480 can play a certain role in buffering, so as to reduce the damage degree of the two positioning sliders 420 when contacting, and improve the service life of the positioning sliders 420.

In some embodiments, the punch mechanism 500 further includes a cutter 520, the cutter 520 is disposed on the fixed block 510, the number of cutters 520 may be two, the two cutters 520 are respectively disposed on two sides of the punch 530, and the cutter 520 is used to press the pair of positioning sliders 420 to open the pair of positioning sliders 420 when the support base 410 is downward.

Specifically, the bottoms of the two positioning sliding blocks 420 are respectively connected with two sliding block inserts 490, that is, the sliding block inserts 490 and the positioning sliding blocks 420 are arranged in a one-to-one correspondence manner, the two positioning sliding blocks 420 are respectively connected with the two sliding block inserts 490 through screws and positioning pins, the sliding block inserts 490 play a role in supporting the corresponding positioning sliding blocks 420 and driving directional movement, and meanwhile, one side of the two sliding block inserts 490, which is opposite, is provided with a guide surface 491. In this way, when the support base 410 moves in the direction approaching the fixed block 510, the guide surfaces 491 on the two slider inserts 490 contact the slotting tools 520 (the number of slotting tools 520 may be two, wherein the punch 530 is disposed between the two slotting tools 520), so that the two slider inserts 490 and the corresponding two positioning sliders 420 move to two sides respectively under the extrusion action of the slotting tools 520, so as to realize opening of the two positioning sliders 420.

In some embodiments, the upper die assembly 200 further includes an upper die base 210, an upper backing plate 220, an upper clamping plate 230, a stop plate 240, and an upper stripper plate 250. Wherein, the upper base plate 220 is connected with the upper die holder 210, the upper clamping plate 230 is disposed at one end of the upper base plate 220 away from the upper die holder 210, the stop plate 240 is disposed at one end of the upper clamping plate 230 away from the upper base plate 220, and the upper release plate 250 is disposed at one end of the stop plate 240 away from the upper clamping plate 230.

In some embodiments, the thimble mechanism 300 includes a fixing member 310 and a positioning thimble 320 disposed in the upper stripper plate 250, where the fixing member 310 is inlaid in the upper stripper plate 250, so that when riveting studs 700 with different specifications and models, only another corresponding fixing member 310 is needed to be replaced, thereby improving overall flexibility and practicality; the fixing member 310 is provided with a thimble hole, the positioning thimble 320 is arranged in the thimble hole, and one end of the positioning thimble 320 extends out of the fixing member 310, so that the positioning thimble 320 passes through the punching hole of the product to be riveted and abuts against one end of the stud 700 when the upper die assembly 200 moves along the direction approaching to the lower die assembly 100.

In addition, a fourth return elastic member 330 is disposed in the stop plate 240, the fourth return elastic member 330 is specifically a spring member, a spring hole is disposed in the stop plate 240, and the fourth return elastic member 330 is disposed in the spring hole. The upper backing plate 220, the upper clamping plate 230 and the stop plate 240 are provided with an elastic piece back block 340, two ends of the fourth reset elastic piece 330 are respectively connected with the elastic piece back block 340 and the positioning thimble 320, and the fourth reset elastic piece 330 is used for providing elastic force for the positioning thimble 320, so that the positioning thimble 320 has a trend of being far away from the upper die holder 210.

In this way, after the riveting is completed, the positioning ejector 320 can automatically remove the material and restore to the initial position under the elastic force of the fourth restoring elastic element 330.

In some embodiments, referring to fig. 3 and 6, the in-mold stud riveting device further includes a feeding rail 600, where the feeding rail 600 is disposed on the lower die assembly 100 and extends to the receiving groove 430 to convey the stud 700 into the receiving groove 430.

Specifically, the feeding rail 600 is disposed on one side of the supporting seat 410, and a vibration tray (not shown) is connected to the other side of the feeding rail 600, so that the studs 700 are fed into the feeding rail 600 by the vibration tray.

The following specifically describes a stamping process using the in-mold rivet stud device provided in the embodiments of the present application:

before stamping, the product to be riveted is fixed on the lower die plate 130, air pressure capable of pushing the stud 700 to move is arranged in the feeding track 600, namely, the stud 700 moves to the accommodating groove 430 formed by the two positioning sliding blocks 420 under the action of the air pressure in the feeding track 600 and is placed on the punch 530, so that under the continuous action of the air pressure, the stud 700 can realize preliminary positioning after reaching the accommodating groove 430.

During punching, the upper die assembly 200 drives the fixing piece 310 and the positioning thimble 320 to move downwards when moving downwards, the positioning thimble 320 is higher than the upper stripper plate 250 in the die opening state (the state shown in fig. 1), the positioning thimble 320 passes through a punching hole of a product to be riveted and contacts with the upper end of the stud 700 in the descending process, the lower end of the stud 700 presses the punch 530 to continue descending until the punch 530 reaches a limiting position on the pressing block 550, and then the upper and lower surface pressing can be formed on the stud 700, so that a secondary positioning effect is further achieved on the stud 700; after that, the upper die assembly 200 continues to press down the product, the product presses down the supporting seat 410, the two slide inserts 490 contact the slotting tool 520 in the descending process of the supporting seat 410, the two slide inserts 490 respectively drive the two positioning slide blocks 420 to move to two sides under the extrusion acting force of the slotting tool 520, at this time, a yielding space for punching the punch 530 can be formed, the stud 700 passes through the punching hole, and the punching of the punch 530 on the stud 700 is realized in the die-closing state (the state shown in fig. 2).

After the stamping is completed, the upper die assembly 200 moves upwards, and the positioning ejector pins 320 realize automatic stripping under the action of the elastic force of the fourth reset elastic piece 330; meanwhile, under the elastic force of the second reset elastic member 450, the supporting seat 410 is reset upwards, the limiting block 440 limits the supporting seat 410, and in the process of resetting the supporting seat 410, under the acting force of the third reset elastic member 470, the positioning slider 420 is restored to the original position, and the punch 530 is reset upwards under the action of the first reset elastic member 540. Finally, the product is removed by a manual or mechanical arm, and the next stamping operation of the stud 700 is continued.

To sum up, this application adopts from down upwards automatic riveting double-screw bolt 700, has realized comprehensive automated production effect, compares traditional manual riveting, and the speed is faster higher efficiency, can satisfy the mass production demand of enterprise to need not to use the personnel to carry out manual operation, can effectively reduce user's intensity of labour, be favorable to reducing the human cost of enterprise, improve economic benefits, the product uniformity in the mechanical automation production batch is high simultaneously, and the product actual assembly effect is better.

It should be noted that in this specification relational terms such as first and second are used solely to distinguish one entity from another entity without necessarily requiring or implying any actual such relationship or order between such entities.

The in-mold rivet stud device provided by the application is described in detail above. Specific examples are employed herein to illustrate the principles and embodiments of the present application, and the above examples are provided only to assist in understanding the aspects of the present application and their core ideas. It should be noted that it would be obvious to those skilled in the art that various improvements and modifications can be made to the present application without departing from the principles of the present application, and such improvements and modifications fall within the scope of the claims of the present application.

Claims (10)

1. An in-mold rivet stud device, comprising:

a lower die assembly (100) for fixing a product to be riveted;

an upper die assembly (200) disposed toward the lower die assembly (100) for movement relative to the lower die assembly (100) in a first direction;

the ejector pin mechanism (300) is arranged on the upper die assembly (200) and is used for penetrating through the punching hole of the product to be riveted and abutting against one end of the stud (700) when the upper die assembly (200) moves along the first direction and approaches to the lower die assembly (100);

a positioning mechanism (400) provided to the lower die assembly (100) for positioning the stud (700), comprising:

a support base (410) movably connected to the lower die assembly (100) for movement relative to the lower die assembly (100) in the first direction;

a pair of positioning sliding blocks (420) slidably connected to the supporting seat (410) and used for sliding along a second direction relative to the supporting seat (410) so as to form a containing groove (430) for containing the stud (700) when closed and form a avoidance space for punching the stud (700) when opened;

a punch mechanism (500) provided in the lower die assembly (100) for punching the stud (700), comprising:

a fixed block (510);

and the punch (530) is abutted against the other end of the stud (700) and movably connected with the fixed block (510) and is used for moving relative to the fixed block (510) along the first direction so as to press the pair of positioning sliding blocks (420) to open the pair of positioning sliding blocks (420) and realize stamping of the stud (700) when the supporting seat (410) moves along the first direction and is close to the fixed block (510).

2. The in-mold rivet stud device of claim 1, wherein the lower mold assembly (100) comprises a lower mold base (110), a lower backing plate (120) provided on the lower mold base (110), and a lower mold plate (130) provided on the lower backing plate (120);

the punch mechanism (500) further comprises a first reset elastic piece (540) and a pressing block (550), wherein the pressing block (550) and the fixed block (510) are fixed in the lower die holder (110) and the lower base plate (120), the pressing block (550) is located on one side, far away from the upper die assembly (200), of the fixed block (510), the first reset elastic piece (540) is arranged in the pressing block (550), and two ends of the first reset elastic piece (540) are respectively connected with the punch (530) and the pressing block (550) so as to provide elastic force for the punch (530) so that the punch (530) has a trend of being far away from the pressing block (550).

3. The in-mold rivet stud device according to claim 2, wherein the support base (410) is disposed in the lower die plate (130), limiting blocks (440) are disposed on both sides of the support base (410), the support base (410) is connected with a second reset elastic member (450), and the second reset elastic member (450) penetrates through the lower pad (120) and is connected to the lower die holder (110) so as to provide elastic force for the support base (410), so that the support base (410) has a tendency to be far away from the lower die holder (110).

4. The in-mold rivet stud device according to claim 1, wherein the positioning mechanism (400) further comprises a pair of slide guide holders (460), the pair of slide guide holders (460) are provided in the support holder (410), the pair of positioning slides (420) are respectively slidably provided in the pair of slide guide holders (460), and a third reset elastic member (470) is connected between the positioning slide (420) and the corresponding slide guide holder (460), and the third reset elastic member (470) is used for providing an elastic force to the corresponding positioning slide (420) so that the positioning slide (420) has a tendency to be away from the corresponding slide guide holder (460).

5. The in-mold rivet stud device according to claim 4, wherein a buffer block (480) is disposed between a pair of positioning sliders (420), the buffer block (480) is disposed in the support base (410), and the buffer block (480) is configured to buffer the pair of positioning sliders (420) when the pair of positioning sliders (420) receives the elastic force of the corresponding third reset elastic member (470).

6. The in-mold rivet stud device of claim 1, wherein the punch mechanism (500) further comprises a slotting tool (520), the slotting tool (520) being provided to the fixed block (510);

the bottoms of the pair of positioning sliding blocks (420) are respectively connected with a pair of sliding block inserts (490), and the opposite sides of the pair of sliding block inserts (490) are respectively provided with a guide surface (491);

when the support base (410) moves along the first direction and approaches the fixed block (510), the guide surfaces (491) on the pair of sliding block inserts (490) contact the slotting tool (520), so that the pair of sliding block inserts (490) and the pair of positioning sliding blocks (420) move to two sides under the extrusion action of the slotting tool (520) to realize the opening of the pair of positioning sliding blocks (420).

7. The in-mold rivet stud device of claim 1, wherein the upper die assembly (200) includes an upper stripper plate (250), the ejector pin mechanism (300) includes a fixing member (310) and a positioning ejector pin (320) disposed in the upper stripper plate (250), and one end of the positioning ejector pin (320) extends out of the fixing member (310) so that the positioning ejector pin (320) passes through a punching hole of the product to be riveted and abuts against one end of the stud (700) when the upper die assembly (200) moves in the first direction and near the lower die assembly (100).

8. The in-mold rivet stud device according to claim 7, wherein the upper die assembly (200) further comprises an upper die holder (210) and an upper backing plate (220) connected with the upper die holder (210), an upper clamping plate (230) is arranged at one end of the upper backing plate (220) far away from the upper die holder (210), a stop plate (240) is arranged at one end of the upper clamping plate (230) far away from the upper backing plate (220), and the upper stripping plate (250) is arranged at one end of the stop plate (240) far away from the upper clamping plate (230);

be equipped with fourth elastic component (330) that resets in backstop board (240), upper padding plate (220) upper clamping plate (230) with be equipped with elastic component back of the body piece (340) in backstop board (240), the both ends of fourth elastic component that resets (330) are connected respectively elastic component back of the body piece (340) with location thimble (320), fourth elastic component that resets (330) are used for to location thimble (320) provide elastic force, make location thimble (320) have keeping away from the trend of upper die base (210).

9. The in-mold rivet stud device according to claim 1, wherein the lower mold assembly (100) is connected with a plurality of ejector pins for supporting the product to be riveted so that the product to be riveted is fixed between the lower mold assembly (100) and the upper mold assembly (200).

10. The in-mold rivet stud device of any one of claims 1-9, further comprising a feed rail (600), the feed rail (600) being provided to the lower die assembly (100) and extending to the receiving slot (430) to convey the stud (700) into the receiving slot (430).