CN110918785B

CN110918785B - Bracket net bottom stamping die and bracket net bottom stamping method

Info

Publication number: CN110918785B
Application number: CN201911113467.6A
Authority: CN
Inventors: 朱建彬; 张生东
Original assignee: Sichuan Feiya Medical Equipment Co ltd
Current assignee: Sichuan Feiya Medical Equipment Co ltd
Priority date: 2019-11-14
Filing date: 2019-11-14
Publication date: 2021-06-25
Anticipated expiration: 2039-11-14
Also published as: CN110918785A

Abstract

The utility model provides a support groove net bottom stamping die, including last mould and lower mould, it is equipped with the last mould mold insert that takes the die cavity to go up the mould, it takes off the material piece to be equipped with the mould in the die cavity, the lower mould is equipped with the lower mould drift, the work end of lower mould drift is configured into can stretch into the die cavity, the work end of lower mould drift is equipped with first shaping face, it takes off the terminal surface that the material piece is close to the lower mould to be equipped with the second shaping face to go up the mould, second shaping face is equipped with the protruding line of mark, first shaping face is used for carving the marking with the cooperation of second shaping face, it can realize supporting groove net bottom of.

Description

Bracket net bottom stamping die and bracket net bottom stamping method

Technical Field

The invention relates to the technical field of medical equipment, in particular to a bracket net bottom stamping die and a bracket net bottom stamping method.

Background

The bracket net bottom die is special in material specification and is formed by welding 2 layers of materials, the base layer is made of SUS 304T-0.3 stainless steel plate, and an 80-mesh SUS 316L stainless steel net is additionally welded; due to the limitations of the welding process, the material specification is at most 120 mm. The net bottom product is a full-curved surface, and a marking line is formed on the surface in a stamping mode, so that the accurate installation of the bracket net bottom is realized when the bracket is installed on the surface of a tooth.

At present, a product at the bottom of a bracket net is manufactured by adopting a stamping process, and three continuous processes of marking, forming and blanking are generally selected to realize the production. The production efficiency is very low due to frequent material loading and unloading processes, and the product quality is also unstable.

Disclosure of Invention

The invention aims to provide a bracket net bottom stamping die which can mark and form a bracket net bottom at the same time during stamping, increase the production efficiency and improve the product quality.

The invention also aims to provide a bracket net bottom stamping method, which realizes marking and forming simultaneously during bracket net bottom stamping.

The embodiment of the invention is realized by the following technical scheme:

the utility model provides a hold in palm groove net end stamping die, includes mould and lower mould, goes up the mould and is equipped with the last mould mold insert that takes the die cavity, is equipped with the mould in the die cavity and takes off the material piece, and the lower mould is equipped with the lower mould drift, and the work end of lower mould drift is configured into can stretch into the die cavity, and the work end of lower mould drift is equipped with first shaping face, goes up the mould and takes off the terminal surface that the material piece is close to the lower mould and is equipped with second shaping face, and second shaping face is equipped with the protruding line of mark, and first.

The automatic discharging device comprises an upper die, a lower die, a die holder, an upper die plate and an automatic discharging mechanism, wherein the upper die is provided with a die handle, an upper die holder, the upper die plate and the automatic discharging mechanism;

the upper die insert is internally provided with an upper die plate, the forming cavity is arranged opposite to the lower die at an opening formed by the upper die insert, an upper die stripping block is arranged in the forming cavity, the automatic discharging mechanism is movably arranged on the upper die base and the upper die plate in a penetrating way, and one end of the automatic discharging mechanism is connected with the upper die stripping block.

Furthermore, a transition plate is arranged between the upper die base and the upper die plate, the upper die base, the upper die plate and the transition plate are sequentially and fixedly connected along the working moving direction of the die, the upper die plate is provided with a through hole for installing an upper die insert, the upper die insert is detachably fixed on the transition plate, the upper die is provided with a discharging blind hole, the discharging blind hole comprises a forming cavity, a feeding hole is formed in the position, close to the end face of the lower die, of the upper die insert by the discharging blind hole, and one end of the discharging blind hole penetrates through the transition plate;

a movable upper die stripping block is arranged in the discharging blind hole, the movable direction of the upper die stripping block is consistent with the working moving direction of the upper die, a lower die punch is arranged on the moving path of the upper die stripping block and is used for ejecting the raw material at the bottom of the bracket net into the discharging blind hole;

the automatic discharging mechanism comprises a discharging spring and a discharging rod, one end of the discharging rod is connected with the upper die stripping block, the other end of the discharging rod is connected with one end of the discharging spring, and the other end of the discharging spring is connected with the upper die base.

Furthermore, the discharging rod comprises a discharging push plate and a discharging pin, the discharging push plate and the discharging pin are both arranged in the discharging blind hole, one end of the discharging spring, far away from the upper die base, is connected with one side of the discharging push plate, and the other side of the discharging push plate is provided with a groove;

the discharging pin is arranged in a T shape and comprises a flat head part and a straight body part, the flat head part is arranged in the groove, the flat head part is contacted with the discharging push plate, the straight body part penetrates through the transition plate, and the straight body part is connected with the upper die stripping block;

the discharging blind hole forms a nail passing channel in the transition plate, the straight body part penetrates through the nail passing channel, and the radius of the flat head part is larger than that of the nail passing channel;

the discharging spring is configured to be in a compressed state, so that the flat head part is in close contact with the discharging push plate at the groove, and the straight body part is in close contact with the upper mold stripping block.

Further, the transition plate comprises an upper mold clamping plate and an upper mold base plate, and the upper mold base, the upper mold clamping plate, the upper mold base plate and the upper mold plate are fixedly connected in sequence;

the upper die insert is fixed on the upper die base plate through a screw, and the discharging push plate is arranged in the part of the discharging blind hole in the upper die clamping plate;

along the radial direction of the discharging blind hole, the cross-sectional area of the discharging push plate is larger than that of the nail passing channel.

The lower die stripping plate is arranged close to the upper die compared with the lower die base, the lower die clamping plate is provided with a through hole for accommodating the lower die insert, the lower die insert is connected with the lower die base plate through a screw, the lower die insert is provided with a first through hole for mounting a lower die punch, the lower die stripping plate is provided with through holes distributed opposite to the working end of the lower die punch, and the lower die punch is configured in such a way that the working end can extend out of the lower die stripping plate through the through hole and the working end extends into the upper die to realize forming;

the lower die comprises a lower die plate, a lower die base, a lower die clamping plate, a discharging screw, a lower die base plate, a lower die clamping plate, a fixing screw and a screw rod, wherein one end of the discharging screw is movably arranged in the lower die base, the other end of the discharging screw is accommodated in a second through hole of the lower die clamping plate, the other end of the discharging screw is abutted against one side of the lower die stripping plate, a screw body of the discharging screw movably penetrates through the lower die base plate, the diameter of the second

The first elastic piece that resets, first elastic piece one end that resets is by locating the lower mould backing plate, and the other end is by locating the lower mould and take off the board.

Furthermore, the lower die holder is provided with a blind hole, one end of the discharging screw is movably arranged in the blind hole, the length direction of the discharging screw is consistent with the working moving direction of the die, a second resetting elastic piece is arranged in the blind hole, one end of the second resetting elastic piece is connected with the discharging screw, and the other end of the second resetting elastic piece is connected with the lower die holder.

The material mounting device is characterized by further comprising a floating positioning mechanism, the floating positioning mechanism is arranged on the lower die, a material mounting plane is arranged on the end face, close to the upper die, of the lower die, the floating positioning mechanism comprises at least two positioning columns, the positioning columns are movably arranged in the lower die along the length direction, the length direction of the positioning columns is consistent with the working moving direction of the die, the material mounting plane is provided with a plurality of positioning openings, the number of the positioning openings is consistent with that of the positioning columns, one ends of the positioning columns are connected with the lower die through elastic pieces, and the other ends of the positioning columns extend out of the material mounting;

the material mounting plane is provided with a punching hole which is arranged opposite to the lower die punching head, the lower die punching head punches the raw material plate of the product to form a forming notch which is consistent with the punching hole, and one end of the positioning column, which is close to the upper die, is configured to extend into the forming notch and limit the degree of freedom of the xyz three axes with the forming notch;

the punching holes and all the positioning openings are not distributed in the same straight line.

Furthermore, the floating positioning mechanism is provided with two positioning columns, the material mounting plane is provided with two positioning openings, the stamping hole and the two positioning openings are distributed in an L shape, the stamping hole is positioned at the turning point of the L shape, and the distances between the two positioning openings and the stamping hole are equal.

The bracket net bottom stamping die comprises the bracket net bottom stamping die, and the bracket net bottom stamping die realizes the simultaneous forming and marking line engraving through the mutual matching of the first forming surface of the lower die punch and the second forming surface with the marking convex line in the upper die stripping block.

The technical scheme of the embodiment of the invention at least has the following advantages and beneficial effects: marking and forming can be realized at the same time when the bracket net bottom is stamped, the production efficiency is increased, and the product quality is improved.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

FIG. 1 is a schematic structural diagram of a main body of a bracket mesh bottom stamping die provided in an embodiment of the invention;

FIG. 2 is an enlarged view of a portion of FIG. 1 at A;

FIG. 3 is a schematic view of a portion of a top mold according to an embodiment of the present invention;

FIG. 4 is a schematic structural diagram of a discharging blind hole provided in the embodiment of the present invention;

FIG. 5 is a schematic view of a discharge bar according to an embodiment of the present invention;

FIG. 6 is an enlarged view of a portion of FIG. 1 at B;

FIG. 7 is a schematic view of the blind hole and the second through hole of FIG. 6;

FIG. 8 is an enlarged view of a portion of FIG. 1 at C;

FIG. 9 is a schematic view of the initial press forming of a sheet of raw material on a material mounting plane according to an embodiment of the present invention;

fig. 10 is a schematic view of multiple stamping forming of a sheet of raw material on a material mounting plane according to an embodiment of the present invention.

Icon: 100-upper die, 110-die shank, 120-upper die holder, 130-transition plate, 131-upper die clamping plate, 132-upper die backing plate, 140-upper die plate, 141-upper die insert, 141 a-upper die stripper block, 150-automatic discharge mechanism, 151-discharge spring, 152-discharge rod, 152 a-discharge push plate, 152 aa-groove, 152 b-discharge pin, 152 ba-flat head, 152 bb-straight body, 160-discharge blind hole, 200-lower die, 210-lower die holder, 211-blind hole, 211 a-second return spring, 220-lower die backing plate, 230-lower die clamping plate, 231-lower die insert, 232-second through hole, 232 a-first return spring, 240-lower die stripper plate, 250-discharge screw, 260-lower die punch, 300-floating positioning mechanism, 310-positioning column, 320-elastic piece, 400-material mounting plane, 410-positioning opening and 420-punching hole.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the present invention, it should be noted that, if the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings or the orientations or positional relationships that the products of the present invention are usually placed in when used, the terms are only used for convenience of describing the present invention and simplifying the description, and do not indicate or imply that the devices or elements indicated must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like are used merely to distinguish one description from another, and are not to be construed as indicating or implying relative importance.

Furthermore, the terms "horizontal", "vertical" and the like do not require that the components be absolutely horizontal or overhanging, but may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.

In the description of the present invention, it should be further noted that unless otherwise explicitly stated or limited, the terms "disposed," "mounted," "connected," and "connected" should be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Referring to fig. 1, 2 and 8, a sink net bottom stamping die includes an upper die 100 and a lower die 200, the upper die 100 has an upper die insert 141 with a forming cavity, an upper die stripping block 141a is disposed in the forming cavity, the lower die 200 has a lower die punch 260, a working end of the lower die punch 260 is configured to be extendable into the forming cavity, a working end of the lower die punch 260 has a first forming surface, an end surface of the upper die stripping block 141a close to the lower die 200 has a second forming surface, the second forming surface has a marking convex line, and the first forming surface and the second forming surface are matched for marking the line.

The upper die 100 moves in the direction toward the lower die 200, and cooperates with the lower die 200 to punch and form the bracket mesh bottom, specifically, a first molding surface of the lower die punch 260 cooperates with a second molding surface of the upper die stripper block 141 a. And a marking convex line is arranged at the position of the second molding surface and used for marking the raw material at the bottom of the bracket net in the stamping process, so that the marking line can be simultaneously marked when the bottom of the bracket net is stamped and formed.

Compared with the method for molding after marking the lines, the technical scheme can simultaneously mark the lines and mold, and reduce the process times, thereby reducing the times of loading and unloading raw materials, improving the overall stamping condition and being beneficial to the overall quality level. And simultaneously realize marking and shaping, still improved production efficiency.

The following description will be made in detail with reference to the automatic unloading mechanism 150 of the upper mold 100, the automatic return of the lower mold 200, and the floating positioning mechanism 300.

Further, referring to fig. 1 and 2, the upper mold 100 is provided with a mold handle 110, an upper mold base 120, an upper mold plate 140 and an automatic discharging mechanism 150, the upper mold plate 140 is disposed adjacent to the lower mold 200, one end of the mold handle 110 is configured to be connected to a punching device, the other end is fixedly connected to the upper mold base 120, and the upper mold base 120 is fixedly connected to the upper mold plate 140. The upper mold insert 141 is internally provided with an upper mold plate 140, a molding cavity is arranged opposite to the lower mold 200 at an opening formed by the upper mold insert 141, an upper mold stripping block 141a is arranged in the molding cavity, the automatic discharging mechanism 150 is movably arranged through the upper mold base 120 and the upper mold plate 140, and one end of the automatic discharging mechanism 150 is connected with the upper mold stripping block 141 a.

The punching apparatus moves the upper die 100 through the die shank 110. The length direction of the molding cavity coincides with the working movement direction of the upper mold 100. The automatic discharging mechanism 150 is arranged and used for automatically discharging the bracket net bottom after the upper die stripping block 141a is formed, so that the bracket net bottom can be marked, formed and discharged at the same time, the process times are reduced, and the production efficiency is improved.

Further, referring to fig. 1 to 4, a transition plate 130 is disposed between the upper die base 120 and the upper die plate 140, the upper die base 120, the upper die plate 140, and the transition plate 130 are sequentially and fixedly connected along a moving direction of the die, the upper die plate 140 is provided with a through hole for mounting an upper die insert 141, the upper die insert 141 is detachably fixed to the transition plate 130, the upper die is provided with a discharge blind hole 160, the discharge blind hole 160 includes a molding cavity, the discharge blind hole 160 forms a feed inlet at an end surface of the upper die insert 141 close to the lower die 200, and one end of the discharge blind hole 160 penetrates through the transition plate 130 and is disposed in the upper die. The discharging blind hole 160 is provided with a movable upper die stripping block 141a, the movable direction of the upper die stripping block 141a is consistent with the working moving direction of the upper die 100, the lower die punch 260 is arranged on the moving path of the upper die stripping block 141a, and the lower die punch 260 is used for ejecting the bracket net bottom raw material into the discharging blind hole 160. The automatic discharging mechanism 150 includes a discharging spring 151 and a discharging rod 152, one end of the discharging rod 152 is connected to the upper mold stripping block 141a, the other end of the discharging rod 152 is connected to one end of the discharging spring 151, and the other end of the discharging spring 151 is connected to the upper mold base 120.

When the lower die punch 260 of the lower die 200 punches into the forming cavity to cooperate with the stripper block of the lower die 200 to form and mark-marking lines, the upper die stripper block 141a increases the pressure on the discharge spring 151 through the discharge rod 152, and the length of the discharge spring 151 is further compressed. When the forming is finished, the upper die 100 and the lower die 200 are opened and separated, the lower die punch 260 withdraws from the discharging blind hole 160, the discharging spring 151 pushes out the material removing block of the lower die 200 and the bracket net bottom forming product on the material removing block of the lower die 200, and the automatic material returning is realized.

Preferably, the moving direction of the upper mold 100 is vertical.

Further, referring to fig. 1 to 5, the discharging rod 152 includes a discharging push plate 152a and a discharging pin 152b, the discharging push plate 152a and the discharging pin 152b are both disposed in the discharging blind hole 160, one end of the discharging spring 151 far away from the upper die base 120 is connected to one side of the discharging push plate 152a, and the other side of the discharging push plate 152a is provided with a groove 152 aa. The discharging pin 152b is arranged in a T shape and comprises a flat head portion 152ba and a straight body portion 152bb, the flat head portion 152ba is arranged in the groove 152aa, the flat head portion 152ba is in contact with the discharging push plate 152a, the straight body portion 152bb penetrates through the transition plate 130, and the straight body portion 152bb is connected with the upper die stripping block 141 a. The blind discharge hole 160 forms a nail passing channel in the transition plate 130, the straight body portion 152bb penetrates through the nail passing channel, and the radius of the flat head portion 152ba is larger than that of the nail passing channel. The discharge spring 151 is configured to be in a compressed state such that the flat head portion 152ba is in close contact with the discharge push plate 152a at the groove 152aa, and the straight body portion 152bb is in close contact with the upper die stripper block 141 a.

The discharging pin 152b is arranged in a T shape, wherein the flat head 152ba is in contact with the discharging push plate 152a, one end of the discharging push plate 152a is connected with the discharging spring 151, and the upper mold stripping block 141a transfers force with the discharging spring 151 through the discharging pin 152 b. Through the arrangement of the discharging push plate 152a, the allowable size of the cross-sectional area of the discharging spring 151 is increased, so that the elastic coefficient of the discharging spring 151 is increased, and the discharging capacity of the discharging rod 152 is enhanced.

Further, referring to fig. 3 to 5, the transition plate 130 includes an upper mold clamping plate 131 and an upper mold backing plate 132, the upper mold base 120, the upper mold clamping plate 131, the upper mold backing plate 132, and the upper mold plate 140 are sequentially and fixedly connected, the upper mold insert 141 is fixed to the upper mold backing plate 132 by a screw, the discharge push plate 152a is disposed in a portion of the discharge blind hole 160 in the upper mold clamping plate 131, and a cross-sectional area of the discharge push plate 152a is larger than a cross-sectional area of the nail passing channel along a radial direction of the discharge blind hole 160. The cross-sectional area of the discharge pusher 152a corresponds to the cross-sectional area of the discharge spring 151, and the discharge coefficient of the discharge spring 151 is increased by increasing the cross-sectional area of the discharge spring 151, thereby increasing the thrust of the discharge spring 151 against the upper stripper 141a when the upper die 100 is separated from the lower die 200, and improving the discharge capacity.

Further, referring to fig. 1 and 6-8, the bracket mesh bottom stamping die includes a lower die base 210, a lower die pad 220, a lower die clamping plate 230, and a lower die stripper plate 240, which are connected in sequence, where the lower die stripper plate 240 is disposed near the upper die 100 compared to the lower die base 210, the lower die clamping plate 230 is provided with a through hole for receiving the lower die insert 231, the lower die insert 231 is connected to the lower die pad 220 by a screw, the lower die insert 231 is provided with a first through hole for mounting the lower die punch 260, the lower die stripper plate 240 is provided with a through hole distributed opposite to the working end of the lower die punch 260, and the lower die punch 260 is configured such that the working end can extend out of the lower die stripper plate 240 through the through hole and.

The bracket net bottom stamping die is further provided with a discharging screw 250, one end of the discharging screw 250 is movably arranged in the lower die base 210, the other end of the discharging screw is accommodated in a second through hole 232 of the lower die clamping plate 230 and is abutted and connected with one side of the lower die stripping plate 240, a nail body of the discharging screw 250 movably penetrates through the lower die base plate 220, the diameter of the second through hole 232 is larger than the cross-sectional diameter of the discharging screw 250, the lower die stripping plate 240 is connected with the discharging screw 250 through a fixing screw, a first resetting elastic piece 232a is further arranged in the second through hole 232, one end of the first resetting elastic piece 232a is abutted to the lower die base plate 220, and the other end of the first resetting elastic piece 232 a.

When the upper die 100 and the lower die 200 move to the position where the upper die punch and the lower die 200 are separated from each other for punch forming, the lower die stripper plate 240 moves toward the lower die base 210, and the lower die punch 260 protrudes from the lower die stripper plate 240 and extends into the forming cavity of the upper die 100. When the upper mold is opened and the upper mold is separated from the lower mold 200, the lower mold stripping plate 240 is automatically reset through the first reset elastic piece 232a, which is beneficial to reinstallation of raw materials.

Further, referring to fig. 1, fig. 6 and fig. 7, the lower die holder 210 is provided with a blind hole 211, one end of the discharge screw 250 is movably disposed in the blind hole 211, the length direction of the discharge screw 250 is consistent with the moving direction of the die, a second elastic reset piece 211a is disposed in the blind hole 211, one end of the second elastic reset piece 211a is connected with the discharge screw 250, and the other end is connected with the lower die holder 210. The second elastic restoring piece 211a is matched with the first elastic restoring piece 232a to realize the restoration of the lower mold stripping plate 240 together, and the two elastic restoring pieces 320 can provide larger elastic force for restoration, so that the restoration condition is better.

Further, referring to fig. 1 and 8, a floating positioning mechanism 300 is further provided, the floating positioning mechanism 300 is disposed on the lower die 200, a material mounting plane 400 is disposed on an end surface of the lower die 200 close to the upper die 100, the floating positioning mechanism 300 includes at least two positioning pillars 310, the positioning pillars 310 are movably disposed in the lower die 200 along a length direction, the length direction of the positioning pillars 310 is consistent with a working moving direction of the die, the material mounting plane 400 is provided with a plurality of positioning openings 410, the number of the positioning openings 410 is consistent with the number of the positioning pillars 310, one ends of the positioning pillars 310 are connected to the lower die 200 through elastic members 320, the other ends of the positioning pillars 310 extend out of the material mounting plane 400 from the positioning openings 410, the material mounting plane 400 is provided with a punching hole 420 disposed opposite to the lower die punch 260, the lower die punch 260 punches a forming notch consistent with the punching hole 420 from a material plate of a product, one end of the positioning pillar 310 close to the upper die 100 is configured By this, the punched holes 420 are not aligned with all the positioning openings 410.

The current bracket mesh base is generally approximately rectangular in shape, so the punch holes 420 and the forming notches are both approximately rectangular, as can be seen in fig. 9 and 10. One end of the positioning post 310 near the upper mold 100 is configured to be inserted into the forming notch and define an xyz three-axis degree of freedom with the forming notch, which can be realized by the cross section of the post body of the positioning post 310 and the forming notch of the raw material plate being matched. For example, the shaft of the positioning post 310 is in the form of a cylinder, and the radial diameter of the shaft is similar to the width of the forming notch, so that the freedom between the positioning post 310 extending into the forming notch and the forming notch in the xyz three-axis direction is limited.

Next, the at least two positioning columns 310 jointly position the raw material plate on the material mounting plane 400 of the lower die 200, and the rotation of the raw material plate is limited to position and mount the raw material plate on the material mounting plane 400. The positioning column 310 protrudes out of the original material plate, so that the original material plate can be rapidly installed, and the installation efficiency is improved.

The forming notch that former material board formed in stamping forming cooperates with reference column 310, and along with last one shot forming accomplishes, in the installation of next shot forming, former material board only need move very little distance, and holistic raw and other materials high-usage like this.

Further, the floating positioning mechanism 300 has two positioning columns 310, the material mounting plane 400 has two positioning openings 410, the stamping hole 420 and the two positioning openings 410 are distributed in an L shape, the stamping hole 420 is located at the turning point of the L shape, and the distances between the two positioning openings 410 and the stamping hole 420 are equal.

The two positioning openings 410 are not in the same straight line with the punching hole 420. Adopt two reference columns 310 can realize the rotatory possible restriction of former material board, realize the location installation of former material board, reference column 310 quantity is less, simple to operate. On the work moving direction of mould, it is the same during lower mould drift 260 and the distance between two reference columns 310, and the three is L type and distributes, is favorable to former material board last one time the shaping notch that forms to overlap on the notch of location fast, carries out the stamping forming next time. The two positioning openings 410 are equidistant from the punched hole 420. The positioning opening 410 and the punching hole 420 are spaced by a certain distance, which is also the spacing distance between two adjacent forming notches in the forming notch group of the rectangular matrix type formed on the raw material plate after multiple forming.

Further, the elastic member 320 may be in the form of a metal spring, or may be in other forms, such as a rubber spring.

Furthermore, the embodiment also provides a bracket net bottom stamping method, which comprises the bracket net bottom stamping die, wherein the bracket net bottom is simultaneously shaped and marked by the mutual matching of the first shaping surface of the lower die punch 260 and the second shaping surface with the marked convex line in the upper die stripping block 141 a.

The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes will occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides a stamping die at bottom of tray net, includes mould and lower mould, its characterized in that: the upper die is provided with an upper die insert with a forming cavity, an upper die stripping block is arranged in the forming cavity, the lower die is provided with a lower die punch, the working end of the lower die punch is configured to be capable of extending into the forming cavity, the working end of the lower die punch is provided with a first forming surface, the upper die stripping block is provided with a second forming surface close to the end face of the lower die, the second forming surface is provided with a marking convex line, and the first forming surface and the second forming surface are matched for marking the line;

the die is characterized by further comprising a floating positioning mechanism, the floating positioning mechanism is arranged on the lower die, a material mounting plane is arranged on the end face, close to the upper die, of the lower die, the floating positioning mechanism comprises at least two positioning columns, the positioning columns are movably arranged in the lower die along the length direction, the length direction of the positioning columns is consistent with the working moving direction of the die, a plurality of positioning openings are formed in the material mounting plane, the number of the positioning openings is consistent with that of the positioning columns, one ends of the positioning columns are connected with the lower die through elastic pieces, and the other ends of the positioning columns extend out of the material mounting plane from the positioning openings;

the material mounting plane is provided with a punching hole which is arranged opposite to the lower die punching head, the lower die punching head punches a raw material plate of a product to form a forming notch which is consistent with the punching hole, and one end of the positioning column, which is close to the upper die, is configured to extend into the forming notch and limit the degree of freedom of the xyz three axes with the forming notch;

2. The bracket net bottom stamping die of claim 1, wherein:

the upper die is provided with a die handle, an upper die holder, an upper die plate and an automatic discharging mechanism, the upper die plate is arranged close to the lower die, one end of the die handle is configured to be connected with stamping equipment, the other end of the die handle is fixedly connected with the upper die holder, and the upper die holder is fixedly connected with the upper die plate;

the upper die is characterized in that the upper die insert is internally arranged on the upper die plate, the forming cavity is formed by an opening formed by the upper die insert and the lower die and is internally provided with the upper die stripping block, the automatic unloading mechanism movably penetrates through the upper die base and the upper die plate, and one end of the automatic unloading mechanism is connected with the upper die stripping block.

3. The bracket net bottom stamping die of claim 2, wherein:

a transition plate is arranged between the upper die base and the upper die plate, the upper die base, the transition plate and the upper die plate are sequentially and fixedly connected along the moving direction of the die, the upper die plate is provided with a through hole for mounting the upper die insert, the upper die insert is detachably fixed on the transition plate, the upper die is provided with a discharging blind hole, the discharging blind hole comprises the molding cavity, a feeding hole is formed in the position, close to the end face of the lower die, of the upper die insert, and one end of the discharging blind hole penetrates through the transition plate and is arranged in the upper die base;

the discharging blind hole is internally provided with the movable upper die stripping block, the movable direction of the upper die stripping block is consistent with the working moving direction of the upper die, the lower die punch is arranged on the moving path of the upper die stripping block and is used for jacking the bracket net bottom raw material into the discharging blind hole;

4. The bracket net bottom stamping die of claim 3, wherein:

the discharging rod comprises a discharging push plate and a discharging pin, the discharging push plate and the discharging pin are both arranged in the discharging blind hole, one end of the discharging spring, far away from the upper die base, is connected with one side of the discharging push plate, and the other side of the discharging push plate is provided with a groove;

the discharging blind hole forms a nail passing channel in the transition plate, the straight body penetrates through the nail passing channel, and the radius of the flat head is larger than that of the nail passing channel;

5. The bracket net bottom stamping die of claim 4, wherein:

the transition plate comprises an upper mold clamping plate and an upper mold base plate, and the upper mold base, the upper mold clamping plate, the upper mold base plate and the upper mold plate are fixedly connected in sequence;

and along the radial direction of the discharging blind hole, the cross-sectional area of the discharging push plate is larger than that of the nail passing channel.

6. The bracket net bottom stamping die of claim 1, wherein the lower die comprises:

the lower die stripper plate is provided with a through hole for accommodating a lower die insert, the lower die insert is connected with the lower die base plate through a screw, the lower die insert is provided with a first through hole for mounting a lower die punch, the lower die stripper plate is provided with through holes distributed opposite to the working end of the lower die punch, and the lower die punch is configured into a working end which can extend out of the lower die stripper plate and a working end which extends into the upper die to realize molding;

one end of the unloading screw is movably arranged in the lower die seat, the other end of the unloading screw is accommodated in a second through hole of the lower die clamping plate, the other end of the unloading screw is abutted and connected with one side of the lower die stripping plate, a screw body of the unloading screw movably penetrates through the lower die base plate, the diameter of the second through hole is larger than the transverse diameter of the unloading screw, the lower die stripping plate is connected with the unloading screw through a fixing screw, and the second through hole is internally provided with a screw

And one end of the first reset elastic piece is close to the lower die base plate, and the other end of the first reset elastic piece is close to the lower die stripping plate.

7. The bracket net bottom stamping die of claim 6, wherein: the die holder is equipped with the blind hole, unload screw one end movably locate in the blind hole, the length direction of the screw of unloading is unanimous with mould work moving direction, be equipped with the second elastic component that resets in the blind hole, second elastic component one end that resets with the screw connection of unloading, the other end with the die holder meets.

8. The bracket net bottom stamping die of claim 1, wherein: the floating positioning mechanism is provided with two positioning columns, the material mounting plane is provided with two positioning openings, the punching holes and the two positioning openings are distributed in an L shape, the punching holes are located at turning points of the L shape, and the distances between the two positioning openings and the punching holes are equal.

9. A bracket net bottom stamping method, comprising the bracket net bottom stamping die of any one of claims 1-8, wherein: and the first molding surface of the lower die punch and the second molding surface with the marking convex line in the upper die stripping block are matched with each other, so that the bracket net bottom is molded and marked lines are engraved simultaneously.