CN216393184U - Buttonhole making device - Google Patents

Abstract

The utility model discloses a buttonhole device which solves the problem that a buttonhole tool in the prior art needs to be improved. The utility model discloses a last mould and bed die that contain the relative contact, go up the respective other end of mould and bed die and establish at the articulated locating rack of X type, the opening part in the articulated locating rack work side of X type is established to the respective other end of going up mould and bed die, be equipped with opening stop device between the outside of work side opening part and the outside of application of force side opening part, it contains the bolt, nut and spacing regulation slide, the middle part of spacing regulation slide is equipped with the slot hole, wherein the outside at the articulated locating rack application of force side opening part of X type is fixed to the bolt, spacing regulation slide cup joints above that, the outside at the articulated locating rack application of force side opening part of X type is fixed to the bolt with spacing regulation slide, the end top that stretches out of spacing regulation slide pushes away in the outside of the articulated locating rack work side opening part of X type. The reaming frustum is provided with the tearing bulge in the technology, so that the cutting process can be optimized, and the realization capability of the cutting process can be enhanced.

Description

Buttonhole making device

Technical Field

The utility model relates to the field of hardware tools, in particular to a buttonhole making device.

Background

The button-making tools in the market at present comprise three types, namely a flower punch, a table-type button-making machine and a full-automatic button-making machine, the button-making tools are widely applied to the fields of advertisements, building materials and the like, and the construction objects are common materials such as canvas, spray painting cloth, umbrella cloth or clothes and the like.

Firstly, blooming and flushing: the simple two-piece iron rod type flower punch (a puncher and an iron rod punch) is basically collected and used by individuals and cannot be used in mass production. When the punching machine is used, a puncher is used for punching a picture, the button hole is placed on the hole, the hand is used for holding the iron rod punch to be aligned with the button hole, the hammer is used for knocking the iron rod punch, and the button hole is fixed on the picture through the impact of the iron rod, so that the effect of punching the button hole is achieved. The disadvantages of the flowering punch are: the method has the advantages of completely original manual operation, multiple operation procedures, inconvenient operation and low working efficiency.

Secondly, a desk type dotter: the simple manual dotter has the weight of about 15KG, and the button holes are pressed on the picture through the die under the action of pressing the lever handle by hand. When the button hole pressing machine is used, the button hole is placed on a mold of the button pressing machine, then the picture is placed well, the handle of the button pressing machine is pressed down with force, and the button hole is automatically pressed on the picture by the mold to be directly completed. The desktop dotter shortcoming: the machine is heavy, so inconvenient carrying, only can work in fixed places, and the equipment investment is large during batch production.

Thirdly, a full-automatic dotter: the special button hole is installed in advance without manual button hole installation, and button pressing can be carried out automatically through button control. When in use, the picture is placed on the button making machine, and the button is pressed to complete automatic button making. The automatic dotter has the following defects: the machine is large, can only be used in fixed places, has high acquisition cost, and can only be conditionally equipped by large-scale manufacturing companies.

Application number 201220235832.8, application date 2012.05.23's utility model patent, the prior art that the name is "a hand-held type dotter" is recorded, has recorded a hand-held type dotter, and its handheld portion is the state of freely popping out, and it has ignored the adaptation comfort level of the male and female worker's palm variation in size to the degree of popping out, and ordinary female worker uses such dotter to appear the handle of popping out easily and takes off from the hand pine, leads to the dotter often to drop to pound the phenomenon on the ground. When the button attaching device is used for punching thin or tough materials, the phenomenon that round holes are not cut easily and small wafers are hung at the punched holes often occurs, construction quality and attractiveness are affected very much, meanwhile, the button attaching device recorded in the technology does not consider the factor that a secondary transmission handle is used for force application and labor saving in order to adapt to palm strength and palm working durability, and therefore the technical problems in the prior art need to be improved.

SUMMERY OF THE UTILITY MODEL

The utility model solves the problem that the prior button-making tool still needs to be improved, and provides the button-making hole device which has the advantages of reasonable structure, convenient use and higher working efficiency.

The technical scheme of the utility model is to provide a buttonhole device with the following structure: the device comprises an upper die and a lower die which are in relative contact, wherein the other ends of the upper die and the lower die are arranged on an X-shaped hinged positioning frame, the other ends of the upper die and the lower die are arranged at an opening of the working side of the X-shaped hinged positioning frame, an opening limiting device is arranged between the outer side of the opening of the working side and the outer side of the opening of the force application side and comprises a bolt, a nut and a limiting adjusting sliding plate, a long hole is formed in the middle of the limiting adjusting sliding plate, the bolt is fixed on the outer side of the opening of the force application side of the X-shaped hinged positioning frame, the limiting adjusting sliding plate is sleeved on the bolt, the limiting adjusting sliding plate is fixed on the outer side of the opening of the force application side of the X-shaped hinged positioning frame by the bolt, and the extending end of the limiting adjusting sliding plate pushes the outer side of the opening of the working side of the X-shaped hinged positioning frame.

Preferably, the lower die is provided with a gasket positioning ring, a reaming frustum and an upper buttonhole curling arc-shaped groove, wherein the gasket positioning ring sequentially surrounds the upper buttonhole curling arc-shaped groove and the reaming frustum, and the reaming frustum is provided with a tearing bulge.

Preferably, the tearing bulge is a plurality of annular bulges or a plurality of sections of arc-shaped bulges, wherein the cross section of the tearing bulge is an arc-shaped surface, a polygonal surface or an elliptical surface.

Preferably, a magnet is arranged at the gasket positioning ring.

Preferably, the cross section of the reaming frustum is circular, square, rounded rectangle or triangular; the cross section of the lower die is a hollow circular ring, a hollow elliptical ring, a hollow polygonal frame body, a circle, an ellipse or a polygon.

Preferably, the upper die comprises a shell, a spring and an upper buttonhole positioning pin, wherein the spring and the upper buttonhole positioning pin are sleeved in the shell, one end of the upper buttonhole positioning pin extends out of the shell, and an upper buttonhole fixing groove is arranged on one side surface of the upper buttonhole positioning pin extending out of the upper die; the cross section of the upper buttonhole positioning pin is circular, square, round corner rectangle or triangle, and the cross section of the upper buttonhole fixing groove is circular, round corner rectangle or polygon; the cross section of the shell of the upper die is a hollow circular ring, a hollow elliptical ring or a hollow polygonal frame body.

Preferably, a magnet is arranged at the protruding end of the upper buttonhole fixing groove or the upper buttonhole positioning pin.

Preferably, the X-shaped hinged positioning frame comprises an upper hinged arm and a lower hinged arm, wherein the middle part of the upper hinged arm or the lower hinged arm is disconnected, the disconnected parts are respectively connected with the lower hinged arm or the upper hinged arm through hinged shafts, and the disconnected parts are connected with each other through connecting rods.

Preferably, the X-shaped hinged positioning frame comprises an upper hinged arm, a lower hinged arm, a rebound spring, a labor-saving upper hinged arm and a labor-saving lower hinged arm, wherein one end of the labor-saving upper hinged arm is hinged with one end of the labor-saving lower hinged arm, the other end of the labor-saving upper hinged arm is a handle, and the outer side of the hinged position is respectively connected with the near end of the hinged position of the upper hinged arm and the near end of the hinged position of the lower hinged arm through a hinged shaft.

Preferably, the upper hinge arm or the lower hinge arm is provided with a return spring or a return elastic sheet for pushing the lower hinge arm or the upper hinge arm.

Preferably, a return torsion spring is arranged on a hinged shaft between the upper hinged arm and the lower hinged arm, and the tail end of the return torsion spring is respectively positioned on the upper hinged arm and the lower hinged arm.

Compared with the prior art, the buttonhole device has the following advantages: the reaming frustum is provided with the tearing bulge, so that the cutting process can be optimized, and the realization capability of the cutting process can be enhanced. Reliably tearing a circular hole on the canvas, the spray painting cloth, the umbrella cloth, the plastic cloth or the clothes to match with the upper buttonhole. The extrusion pressure of the abrupt change formula that the tearing arch caused can strengthen the concentration degree of local tear face department extrusion force, makes it jump and extrudees the canvas downwards, produces the extrusion of many times higher intensity and tears the action and produce efficient trompil effect, makes the canvas after punching can not produce the phenomenon that the continuous silk does not drop.

The force application handle is added to transfer the motion of the hand, so that the upper die and the lower die are easily engaged and separated from each other, and the hand-pressing mechanism is suitable for female workers with weak hand strength. The limiting adjustment sliding plate is a sliding part, the opening degree between the upper hinged arm and the lower hinged arm can be limited after the sliding part is fastened through a bolt, operators with different palms can conveniently grip a handheld handle or an stressing handle with a flicking degree suitable for the operators, the flicking degree can be adjusted by the operators according to the size of the palms and the tigers of the operators, and the hands can be operated easily and efficiently in the working process.

The multifunctional desk type dotter has the advantages that the multifunctional desk type dotter is small in appearance, can finish dotting operation only by holding the multifunctional desk type dotter by one hand, changes the limitation that the current desk type dotter or full-automatic dotter can only be used in fixed occasions, can achieve the working efficiency of the desk type dotter, enables customers to be used in fixed places and can also be carried to outdoor construction site operation, and is convenient to carry, simple to use, simple to dotting and attractive.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic cross-sectional view of an upper mold and a lower mold in the present invention;

FIG. 3 is an enlarged partial schematic view of FIG. 2 in accordance with the present invention;

FIG. 4 is one of the structural illustrations of the tearing projections of the present invention;

FIG. 5 is a second schematic view of the structure of the tearing protrusion of the present invention;

FIG. 6 is a third schematic view of the structure of the tearing bulge in the present invention;

FIG. 7 is a fourth view showing the structure of the tearing projection in the present invention;

FIG. 8 is a fifth view showing the structure of the tearing projection in the present invention;

FIG. 9 is a sixth view showing the structure of the tearing projection in the present invention;

FIG. 10 is a schematic cross-sectional view of a tearing projection of the present invention;

FIG. 11 is a schematic diagram of a related art structure according to the present invention;

FIG. 12 is one of the schematic structural views of the present invention;

FIG. 13 is a second schematic structural view of the present invention;

FIG. 14 is a second schematic diagram of a related art structure according to the present invention;

FIG. 15 is a third schematic structural diagram of the present invention;

FIG. 16 is a fourth schematic structural view of the present invention;

FIG. 17 is a schematic view of the structure of the position-limiting adjustment slide plate of the present invention;

fig. 18 is a schematic structural view of an upper grommet and a lower grommet to which the present invention is applied.

In the description of the attached drawings, the reference numeral 1 is an upper die, 2 is a lower die, 3 is an X-shaped hinged positioning frame, 4 is an upper button hole, 5 is a lower button hole, wherein 1-1 is a fixing lug, 1-2 is a shell, 1-3 is a spring, 1-4 is an upper button hole fixing groove, 1-5 is an upper button hole positioning pin, 1-6 is a reaming frustum, 1-7 is a tearing bulge, 1-8 is a gasket positioning ring, 1-9 is an upper button hole curling arc-shaped groove, and 1-10 is a magnet.

3-1 is an upper hinged arm, 3-2 is a lower hinged arm, 3-3 is an anti-falling handle, 3-4 is a reset elastic sheet, 3-5 is a limit adjusting sliding plate, 3-6 is a bolt, 3-7 is a reset torsion spring, 3-8 is a labor-saving upper hinged arm, 3-9 is a labor-saving lower hinged arm, and 3-10 is a connecting rod.

Detailed Description

The grommet device of the present invention is further described with reference to the accompanying drawings and the detailed description below: as shown in the figure, the present embodiment comprises an upper die 1 and a lower die 2 which are in opposite contact, the other ends of the upper die 1 and the lower die 2 are respectively arranged at an X-shaped hinged positioning frame 3, the other ends of the upper die 1 and the lower die 2 are respectively arranged at an opening of a working side of the X-shaped hinged positioning frame 3, an opening limiting device is arranged between the outer side of the opening of the working side and the outer side of the opening of the force application side, it comprises a bolt 3-6, a nut and a limit adjusting sliding plate 3-5, wherein the middle part of the limit adjusting sliding plate 3-5 is provided with a long hole, wherein, the bolt 3-6 is fixed at the outer side of the opening of the force application side of the X-shaped hinged positioning frame 3, the limit adjusting sliding plate 3-5 is sleeved on the bolt, the bolt 3-6 fixes the limit adjusting sliding plate 3-5 at the outer side of the opening of the force application side of the X-shaped hinged positioning frame 3, and the extending end of the limit adjusting sliding plate 3-5 pushes the outer side of the opening of the working side of the X-shaped hinged positioning frame 3.

The upper die 1 and the lower die 2 are connected with the upper hinged arm 3-1 and the lower hinged arm 3-2 through the fixing lug 1-1 as a connecting piece, and are fixed on the upper hinged arm 3-1 and the lower hinged arm 3-2 through bolts 3-6, so that the purpose of stability and no looseness is achieved. The upper die 1 is internally provided with a positioning pin with an upper buttonhole 4 which can stretch out under the action of a spring 1-3 and passes through an upper buttonhole fixing groove 1-4, the upper buttonhole 4 can be sleeved on the positioning pin with the upper buttonhole 4 to keep the positioning pin from falling off, the bottom of the upper die 1 is provided with the upper buttonhole fixing groove 1-4, and after the upper die 1 and the lower die 2 are mutually butted on the upper die 1, the upper buttonhole fixing groove 1-4 can be matched with the upper buttonhole 4, so that the upper buttonhole 4 cannot be extruded and deformed.

The limiting and adjusting sliding plate 3-5 is a sliding part and can limit the opening degree between the upper hinged arm 3-1 and the lower hinged arm 3-2 after being fastened by the bolt 3-6, operators with different palms can conveniently hold a hand-held handle or a stress application handle with the elasticity degree suitable for the operators, and the elasticity degree is generally determined by the size of a tiger's mouth of the palm of the operator.

The lower die 2 is provided with gasket positioning rings 1-8, reaming frustum bodies 1-6 and upper buttonhole curling arc-shaped grooves 1-9, wherein the gasket positioning rings 1-8 sequentially surround the upper buttonhole curling arc-shaped grooves 1-9 and the reaming frustum bodies 1-6, and tearing bulges 1-7 are arranged on the reaming frustum bodies 1-6. The lower die 2 is provided with the reaming frustum 1-6 which can realize the interference fit caused by the sleeve joint with the inserting end of the upper button hole 4, the tearing and extruding actions exist at the same time, a hole is cut after the canvas between the sharp inserting end and the reaming frustum 1-6 is extruded, and the reaming frustum 1-6 is provided with the tearing bulge 1-7 which can optimize the cutting process and enhance the realization capability of the process.

The annular gasket is placed on the gasket positioning ring 1-8, and the inserting end of the upper button hole 4 is expanded to a certain size due to the fact that the inserting end extends on the reaming frustum 1-6, and the inserting end is expanded again by the arc-shaped preset surface at the curling arc groove 1-9 of the upper button hole and is torn into the arc-shaped curling edge. The reaming frustum 1-6 is used for enlarging the annular edge at the bottom of the upper button hole 4, the canvas to be penetrated is extruded, cut and rubbed and cut in the enlarging process, the tightening pressure generated after up and down pressurization is matched with the sliding friction of the sharp and rough annular edge on the reaming frustum 1-6, and the canvas is torn into a circular hole to be matched with the upper button hole 4 in a matching manner.

The tearing bulges 1-7 are a plurality of annular bulges or a plurality of sections of arc-shaped bulges, wherein the cross sections of the tearing bulges 1-7 are arc-shaped surfaces, polygonal surfaces or elliptical surfaces.

The abrupt extrusion pressure caused by the tearing bulges 1-7 can enhance the concentration degree of the extrusion force at the local tearing surface, so that the canvas is jumped to downwards extrude, the extrusion tearing action with higher strength is generated for a plurality of times, the efficient hole opening effect is generated, and the phenomenon that the perforated canvas is connected with wires and does not fall off is avoided. The tearing bulges 1-7 with the multi-section arc bulges can dispersedly squeeze and tear the canvas, and prevent the generation of larger resistance when one cutting surface is squeezed and torn simultaneously.

And magnets 1-10 are arranged at the positions 1-8 of the gasket positioning rings. The spacer positioning ring 1-8 is a plane concave ring for placing the lower button hole 5, which can make the lower button hole 5 positioned without swinging, and the magnet 1-10 arranged nearby can enhance the adsorption force to the upper button hole 4 and the lower button hole 5 through the iron metal around the magnet, so that the two are not easy to loosen in the operation process.

The cross section of each reaming frustum 1-6 is circular, square, rounded rectangle or triangular; the cross section of the lower die 2 is a hollow circular ring, a hollow elliptical ring, a hollow polygonal frame body, a circle, an ellipse or a polygon.

The upper die 1 comprises a shell 1-2, a spring 1-3 and an upper buttonhole 4 positioning pin, wherein the spring 1-3 and the upper buttonhole 4 positioning pin are sleeved in the shell 1-2, one end of the upper buttonhole 4 positioning pin extends out of the shell 1-2, and an upper buttonhole fixing groove 1-4 is arranged on one side surface of the upper buttonhole 4 positioning pin extending out of the upper die 1; the cross section of the positioning pin of the upper button hole 4 is round, square, round-corner rectangle or triangle, and the cross section of the upper button hole fixing groove 1-4 is round, round-corner rectangle or polygon; the cross section of the shell 1-2 of the upper die 1 is a hollow circular ring, a hollow elliptical ring or a hollow polygonal frame body. Magnets 1-10 are arranged at the extended ends of the positioning pins of the upper buttonhole fixing grooves 1-4 or the upper buttonhole 4.

The spring 1-3 and the positioning pin of the upper button hole 4 are sleeved in the shell 1-2, and the purpose that the positioning pin of the upper button hole 4 can be stretched out from the bottom of the shell 1-2 is achieved. The spring 1-3 is a part for controlling the locating pin of the upper button hole 4 to stretch back and forth, when the upper button hole 4 is installed, the locating pin of the upper button hole 4 needs to extend out a proper distance, penetrate into a hole in the middle of the button hole to locate the pin, and is stabilized through the suction force of the magnet 1-10 to perform the next buckling action.

Because the opening at the upper end of the upper grommet 4 is generally designed with a smooth arc surface to realize aesthetic feeling and comfort when touched by hand, an upper grommet fixing groove 1-4 matched with the opening at the upper end of the upper grommet 4 is arranged, and the upper grommet fixing groove 1-4 can protect the upper grommet 4 in the extrusion punching process. After the upper buttonhole 4 slides down along the reaming edges of the reaming frustum 1-6, the annular cutting edge of the upper buttonhole can be turned and bent in the upper buttonhole curling arc-shaped groove 1-9 to form a rolling ring for preventing the lower buttonhole 5 from being separated from the upper buttonhole 4, and finally the upper buttonhole 4 and the lower buttonhole are bound together to achieve the successful installation of the buttonhole. The lower grommet 5 is generally a thin annular body that matches the shape of the opening of the upper grommet 4. The opening of the upper button hole 4 can be in various shapes, and the lower button hole 5 can also be matched with the opening thereof in an adaptive manner, so that the upper button hole and the lower button hole are better matched after being butted.

The X-shaped hinged positioning frame 3 comprises an upper hinged arm 3-1 and a lower hinged arm 3-2, wherein the middle of the upper hinged arm 3-1 or the lower hinged arm 3-2 is disconnected, the disconnected parts are respectively connected with the lower hinged arm 3-2 or the upper hinged arm 3-1 through hinged shafts, and the disconnected parts are connected with each other through connecting rods 3-10. When the connecting rods 3-10 are designed, in order to match the proper transmission angle, transmission space and convenience of mold manufacturing, the connecting rods 3-10 in a straight line type or a fold line type can be used, and the functions are the same. The upper hinged arm 3-1 and the lower hinged arm 3-2 are hinged, and the movement of the hand is transmitted by holding a handle or adding a stress application handle, so that the upper die 1 and the lower die 2 are easily meshed and separated. The main purpose of the deformation, combination and multistage design of the connecting rods 3-10 is to ensure that after the upper hinged arm 3-1 and the lower hinged arm 3-2, the labor-saving upper hinged arm 3-8 and the labor-saving lower hinged arm 3-9 are held, the upper die 1 and the lower die 2 can be aligned, meanwhile, enough space can be arranged between the upper die 1 and the lower die 2 for installing the upper buttonholes 4 and the lower buttonholes 5, and simultaneously, the width is opened to facilitate canvas insertion.

The X-shaped hinged positioning frame 3 comprises an upper hinged arm 3-1, a lower hinged arm 3-2, a rebound spring 1-3, a labor-saving upper hinged arm 3-8 and a labor-saving lower hinged arm 3-9, wherein one end of the labor-saving upper hinged arm 3-8 and one end of the labor-saving lower hinged arm 3-9 are hinged, the other end of the labor-saving upper hinged arm 3-8 and the other end of the labor-saving lower hinged arm 3-9 are handles, and the outer side of the hinged position is respectively connected with the near end of the hinged position of the upper hinged arm 3-1 and the near end of the lower hinged arm 3-2 through a hinged shaft. The X-shaped hinged positioning frame 3 is the most common occlusion release mechanism, one end of the X-shaped hinged positioning frame is used for positioning the upper die 1 and the lower die 2, the other end of the X-shaped hinged positioning frame is used for positioning the handheld force application end, and the anti-falling handle 3-3 is an auxiliary appliance for preventing the hand from being easily separated from the handheld handle or the force application handle. The labor-saving upper hinged arm 3-8 and the labor-saving lower hinged arm 3-9 extend the power generation arm of the X-shaped hinged positioning frame 3, so that the whole buttonhole making process is more labor-saving.

The upper hinged arm 3-1 or the lower hinged arm 3-2 is provided with a return spring 1-3 or a return spring piece 3-4 for pushing the lower hinged arm 3-2 or the upper hinged arm 3-1. The reset elastic sheet 3-4 is positioned between the upper hinged arm 3-1 and the lower hinged arm 3-2, and the upper hinged arm 3-1 and the lower hinged arm 3-2 can be slightly opened after occlusion work through elastic jacking force, the opening process corresponds to the process of releasing hands, and preparation can be rapidly made for the next punching action. The reset torsion springs 3-7 are also used for opening the force-applying parts of the labor-saving and labor-saving upper hinged arms 3-8 and the labor-saving lower hinged arms 3-9, and the opening degree of the hand-held handle or the force-applying handle is adjusted to match the size of the tiger mouth of an operator, so that the hand-held handle or the force-applying handle can be just held by the hand to form proper matching degree and friction force with the palm, is not pulled off the hand and is easy to grasp.

And a return torsion spring 3-7 is arranged on a hinged shaft between the upper hinged arm 3-1 and the lower hinged arm 3-2, and the tail end of the return torsion spring 3-7 is respectively positioned on the upper hinged arm 3-1 and the lower hinged arm 3-2. The functions of the reset torsion springs 3-7, the reset springs 1-3 and the reset elastic sheets 3-4 are the same, but the installation modes are different, and the structure ensures that the upper die 1 and the lower die 2 of the dotting device can automatically reset after the dotting is completed. In the process of connecting and matching the upper hinged arm 3-1, the lower hinged arm 3-2, the labor-saving upper hinged arm 3-8 and the labor-saving lower hinged arm 3-9, a certain section can be of a double-layer or single-layer plate structure bent into a double-layer plate, so that the durability and the stability of the transmission part are improved.

When the device is used, after the upper hinged arm 3-1 and the lower hinged arm 3-2, the labor-saving upper hinged arm 3-8 and the labor-saving lower hinged arm 3-9 are held by one hand, the upper buttonhole 5 and the lower buttonhole 5 are respectively placed on the butt joint surface of the upper die 2 and the lower die 2 by the other hand, the upper buttonhole 5 and the lower buttonhole 5 can be automatically adsorbed due to magnetism of the part for placing the upper buttonhole 5, canvas needing to be buttonhole is placed at the mouth opening position between the upper die 2 and the lower die 2, the upper die 2 and the lower die 2 can be tightly pressed after the upper hinged arm 3-1, the lower hinged arm 3-2, the labor-saving upper hinged arm 3-8 and the labor-saving lower hinged arm 3-9 are forcibly held, the upper die 2 and the lower die 2 can automatically rebound to the original position after the canvas is loosened, the canvas is taken out at the moment, the operation at the position is finished, and the whole process is very efficient and convenient, and the canvas hole wafer is not clamped.

The above-mentioned embodiments are provided for illustrative purposes only and not for limiting the present invention, and those skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention, so that all equivalent technical solutions should fall within the scope of the present invention, and the scope of the present invention should be limited by the claims.

Claims (11)

1. A grommet device characterized by: the device comprises an upper die and a lower die which are in relative contact, wherein the other ends of the upper die and the lower die are arranged on an X-shaped hinged positioning frame, the other ends of the upper die and the lower die are arranged at an opening of the working side of the X-shaped hinged positioning frame, an opening limiting device is arranged between the outer side of the opening of the working side and the outer side of the opening of the force application side and comprises a bolt, a nut and a limiting adjusting sliding plate, a long hole is formed in the middle of the limiting adjusting sliding plate, the bolt is fixed on the outer side of the opening of the force application side of the X-shaped hinged positioning frame, the limiting adjusting sliding plate is sleeved on the bolt, the limiting adjusting sliding plate is fixed on the outer side of the opening of the force application side of the X-shaped hinged positioning frame by the bolt, and the extending end of the limiting adjusting sliding plate pushes the outer side of the opening of the working side of the X-shaped hinged positioning frame.

2. The grommet device according to claim 1, characterized in that: be equipped with gasket holding ring, reaming frustum, last button hole turn-up arc wall on the bed die, wherein gasket holding ring encircles last button hole turn-up arc wall and reaming frustum in proper order, is equipped with on the reaming frustum to tear the arch.

3. A grommet device according to claim 2, characterized in that: the tearing bulge is a plurality of annular bulges or a plurality of sections of arc bulges, wherein the cross section of the tearing bulge is an arc surface, a polygonal surface or an elliptical surface.

4. A grommet device according to claim 2, characterized in that: and a magnet is arranged at the positioning ring of the gasket.

5. A grommet device according to claim 2, characterized in that: the cross section of the reaming frustum is circular, square, rounded rectangle or triangular; the cross section of the lower die is a hollow circular ring, a hollow elliptical ring, a hollow polygonal frame body, a circle, an ellipse or a polygon.

6. The grommet device according to claim 1, characterized in that: the upper die comprises a shell, a spring and an upper buttonhole positioning pin, wherein the spring and the upper buttonhole positioning pin are sleeved in the shell, one end of the upper buttonhole positioning pin extends out of the shell, and an upper buttonhole fixing groove is arranged on one side surface of the upper buttonhole positioning pin extending out of the upper die; the cross section of the upper buttonhole positioning pin is circular, square, round corner rectangle or triangle, and the cross section of the upper buttonhole fixing groove is circular, round corner rectangle or polygon; the cross section of the shell of the upper die is a hollow circular ring, a hollow elliptical ring or a hollow polygonal frame body.

7. The grommet device according to claim 6, characterized in that: and magnets are arranged at the extended ends of the upper buttonhole fixing grooves or the upper buttonhole positioning pins.

8. The grommet device according to claim 1, characterized in that: the X-shaped hinged positioning frame comprises an upper hinged arm and a lower hinged arm, wherein the middle of the upper hinged arm or the lower hinged arm is disconnected, the disconnected parts are respectively connected with the lower hinged arm or the upper hinged arm through hinged shafts, and the disconnected parts are connected with each other through connecting rods.

9. The grommet device according to claim 1, characterized in that: the X-shaped hinged positioning frame comprises an upper hinged arm, a lower hinged arm, a rebound spring, a labor-saving upper hinged arm and a labor-saving lower hinged arm, wherein one end of the labor-saving upper hinged arm is hinged with one end of the labor-saving lower hinged arm, the other end of the labor-saving upper hinged arm is a handle, and the outer side of the hinged position is respectively connected with the near end of the hinged position of the upper hinged arm and the near end of the hinged position of the lower hinged arm through a hinged shaft.

10. The grommet device according to claim 8, characterized in that: and the upper hinged arm or the lower hinged arm is provided with a return spring or a return elastic sheet for pushing the lower hinged arm or the upper hinged arm.

11. The grommet device according to claim 9, characterized in that: and a reset torsion spring is arranged on a hinged shaft between the upper hinged arm and the lower hinged arm, and the tail end of the reset torsion spring is respectively positioned on the upper hinged arm and the lower hinged arm.

Images