CN220329805U - Positioning die - Google Patents

Abstract

The utility model provides a positioning die, includes mould, lower mould, bears the subassembly and sets up two positioning component for the central axis symmetry of bearing the weight of the piece, bears the weight of the subassembly including setting up in the bearing of lower mould and locating the lateral wall of bearing and rotating the piece of being connected with bearing rotation, every positioning component includes: the positioning piece is positioned on one side of the bearing piece and is arranged on the lower die; one end of the linkage piece is connected with the positioning piece, and the other end of the linkage piece is movably connected with the rotating piece; the pushing piece is movably arranged on the lower die in a penetrating manner, is arranged opposite to the upper die and is abutted against the positioning piece; the elastic piece is arranged on the lower die and is connected with one end of the pushing piece, which is far away from the upper die. When the positioning die is opened, a preset placing gap is formed between the two positioning pieces and the bearing piece respectively, so that the workpiece is placed on the bearing piece conveniently, positioning efficiency is improved, and when the positioning die is closed, the two positioning pieces move synchronously and relatively under the cooperation of the linkage piece and the rotating piece respectively, so that the workpiece is centered and positioned on the bearing piece, and positioning precision is improved.

Description

Positioning die

Technical Field

The utility model relates to the technical field of machining, in particular to a positioning die.

Background

At present, when the bending material is a plate made of composite materials such as titanium, aluminum and the like, the plate to be bent is positioned by a positioning mechanism, so that bending processing is accurately performed on two ends of the plate. The positioning mechanism comprises a bearing piece and positioning pieces fixedly arranged on two opposite sides of the bearing piece, and the two positioning pieces are used for positioning the board to be bent borne by the bearing piece.

In order to avoid cracking when the plate is bent, the plate is generally heated, however, the plate is heated and then deformed, namely the length dimension of the plate is changed, the deformed plate cannot be movably positioned by the two fixedly arranged positioning pieces, the two ends of the deformed plate respectively extend out of the lengths of the bearing pieces to be inconsistent, the positioning accuracy is reduced, and meanwhile, the deformed plate cannot be centrally positioned by the two positioning pieces, so that the two ends of the bent plate are inconsistent with the length between the plate main body. In addition, the interval between two setting elements is slightly greater than the length of the panel that waits to bend for the panel needs slowly to place on the carrier between two setting elements, can avoid the panel to bump with between two setting elements, but can increase the location operation time like this, has reduced positioning efficiency.

Disclosure of Invention

In view of the above, it is necessary to provide a positioning die to improve positioning accuracy and positioning efficiency.

The embodiment of the application provides a positioning die, including relative last mould and the lower mould that sets up, positioning die still includes: the bearing assembly comprises a bearing piece and a rotating piece, wherein the bearing piece is arranged on the lower die and used for bearing a workpiece, and the rotating piece is arranged on the side wall of the bearing piece and is in rotating connection with the bearing piece; the two positioning assemblies are symmetrically arranged on the lower die relative to the central axis of the bearing piece and are used for clamping and positioning the workpiece borne on the bearing piece; each of the positioning assemblies includes: the positioning piece is positioned at one side of the bearing piece and is arranged on the lower die; one end of the linkage piece is connected with the positioning piece, and the other end of the linkage piece is movably connected with the rotating piece; the pushing piece is movably arranged between the lower die and the upper die in a penetrating manner and is abutted against the positioning piece; the elastic piece is sleeved at one end of the pushing piece, which is far away from the upper die, and is connected with the lower die; when the upper die and the lower die are opened, the elastic piece drives the pushing piece to push the positioning piece to be far away from the bearing piece, so that a preset placing gap is formed between the positioning piece and the corresponding bearing piece, and when the upper die and the lower die are closed, the upper die pushes the pushing piece to compress the elastic piece downwards and drive the positioning piece to move close to the bearing piece, so that the two positioning pieces synchronously move relatively under the cooperation of the linkage piece and the rotating piece, and clamp and position the workpiece borne on the bearing piece.

When the positioning die is opened, the pushing piece pushes the positioning piece to move away from the bearing piece under the driving of the elastic piece, so that a preset placing gap is formed between the two positioning pieces and the bearing piece respectively, the distance between the two positioning pieces is larger than the length dimension of the deformed workpiece and the length dimension of the undeformed workpiece, an operator or a manipulator can conveniently and rapidly place the workpiece on the bearing piece, collision between the workpiece and the positioning piece is avoided, positioning operation time is shortened, and positioning efficiency is improved. When the positioning die is assembled, the pushing piece compresses the elastic piece under the driving of the upper die and drives the positioning piece to move close to the bearing piece, meanwhile, the two positioning pieces synchronously move relatively under the cooperation of the rotating piece and the linkage piece to clamp the workpiece borne by the positioning bearing piece, so that the workpiece can be centered and positioned on the bearing piece, positioning precision is improved, the upper die can accurately bend the two opposite ends of the workpiece, the two opposite end faces of the bent workpiece and the main body part of the workpiece, which are not bent, are kept at the same distance, and bending precision is improved.

In some embodiments, the positioning member comprises: the positioning part is arranged on the lower die in a sliding manner and is connected with the linkage piece, and the positioning part is used for clamping and positioning the workpiece borne on the bearing piece; the bulge part is convexly arranged on the side wall of the positioning part and is abutted against the pushing piece, and the bulge part is used for moving close to or far away from the bearing piece under the driving of the pushing piece; and the limiting part is arranged on one side of the lower die facing the upper die, and one side of the limiting part facing the positioning part is provided with a limiting groove, and the limiting groove is used for accommodating and limiting the protruding part.

In some embodiments, the abutment comprises: the pushing main body is movably arranged between the lower die and the upper die in a penetrating manner, the pushing main body and the lower die are respectively abutted to two ends of the elastic piece, and the pushing main body is used for pushing down the elastic piece to the lower die under the driving of the upper die; the pushing part is convexly arranged on one side of the pushing main body facing the upper die and is abutted against the protruding part, and the pushing part is used for pushing the protruding part under the driving of the pushing main body; the connecting part is connected with one end of the pushing part, which is away from the upper die, and penetrates through the elastic piece, and the connecting part is used for limiting the elastic piece.

In some embodiments, a pushing inclined surface is arranged on one side of the pushing part facing to the protruding part, a pushing adapting surface is arranged on one side of the protruding part facing to the pushing part, and the pushing part slides to push the pushing adapting surface through the pushing inclined surface so as to drive the protruding part to move.

In some embodiments, a profiling positioning groove is formed in one side, facing the bearing piece, of the positioning portion, the profiling positioning groove is matched with the workpiece, and the positioning portion clamps and positions the workpiece borne on the bearing piece through the profiling positioning groove.

In some embodiments, the positioning member further comprises: and the two ends of the elastic part are respectively connected with the lower die and one side of the positioning part, which is away from the bearing piece, and the elastic part is used for driving the positioning part to move towards the bearing piece.

In some embodiments, the rotating member includes a rotating portion and two pins, the rotating portion is rotationally connected with the bearing member, and the two pins are oppositely disposed on the same side of the rotating portion away from the bearing member; the linkage piece is adjacent the one end of rotating the piece is equipped with the kidney slot, the kidney slot runs through the linkage piece and holds corresponding bolt, just the cell wall butt in the periphery side of bolt in kidney slot, kidney slot with the bolt cooperatees and is used for driving two setting element synchronous motion.

In some embodiments, the upper die comprises: the driving plate is arranged on one side of the bearing piece, which is away from the lower die; the two driving rods are respectively connected with the driving plate and respectively correspond to the pushing pieces, and are used for pushing the pushing pieces to move towards the lower die under the driving of the driving plate; the upper template and the bearing piece are respectively arranged on two opposite sides of the driving plate; the two bending pieces are arranged on the upper die plate at intervals and respectively penetrate through the driving plate, and the two bending pieces are used for bending opposite ends of the workpiece after being positioned under the driving of the upper die plate.

In some embodiments, the positioning portion is further provided with a guiding inclined plane, the guiding inclined plane is disposed at one end of the positioning portion facing the upper die and connected with a bottom of the profiling positioning groove, and the guiding inclined plane is used for guiding the bending piece.

In some embodiments, the upper die further comprises: the guide post penetrates through the driving plate and is connected with the upper die plate, the guide post penetrates through the lower die, and the guide post is used for guiding the driving rod and the bending piece.

Drawings

Fig. 1 is a schematic perspective view of a positioning mold in an open mold state and a workpiece applicable to the positioning mold according to an embodiment of the present application.

Fig. 2 is an exploded view of the bearing assembly, the positioning assembly and the lower mold in the positioning mold shown in fig. 1.

Fig. 3 is a schematic perspective view of the positioning mold in the mold-closed state shown in fig. 1 and a workpiece to which the positioning mold is applied.

FIG. 4 is a schematic cross-sectional view of the positioning die and the workpiece shown in FIG. 3 along the direction IV-IV.

Description of the main reference signs

Positioning die 100

Upper die 101

Lower die 102

Load bearing assembly 10

Carrier 11

Rotating member 12

Rotation part 121

Bolt 122

Positioning assembly 20

Positioning piece 21

Preset placement gap 211

Positioning portion 212

Profiling positioning groove 2121

Guide bevel 2122

Boss 213

Pushing fit face 2131

Limit part 214

Limiting groove 2141

Elastic portion 215

Linkage 22

Waist-shaped groove 221

Push-up piece 23

Push body 231

Pushing portion 232

Pushing inclined plane 2321

Connection portion 233

Elastic member 24

Drive plate 30

Drive rod 40

Upper die plate 50

Bending piece 60

Guide post 70

Workpiece 200

Central axis O

Detailed Description

The objects, features and advantages of the present application will be more clearly understood from the following detailed description of the present application taken in conjunction with the accompanying drawings and detailed description. It should be noted that, without conflict, the embodiments of the present application and features of the embodiments may be combined with each other. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application, the described embodiments are merely some, rather than all, of the embodiments of the present application.

Embodiments of the present application are further described below with reference to the accompanying drawings.

Referring to fig. 1 to 4, an embodiment of the present application provides a positioning mold 100, which includes an upper mold 101 and a lower mold 102 disposed opposite to each other, a carrying assembly 10 carried on the lower mold 102, and two positioning assemblies 20 connected to the carrying assembly 10 and carried on the lower mold 102, wherein the positioning mold 100 is used for positioning and bending opposite ends of a workpiece 200. The workpiece 200 is substantially plate-shaped, and the workpiece 200 may be a plate made of a composite material, and the length of the workpiece 200 may be changed after heating.

Referring to fig. 1 and 2, the carrying assembly 10 includes a carrying member 11 and a rotating member 12, the carrying member 11 is substantially rectangular and is carried on the lower die 102, the carrying member 11 is used for carrying a workpiece 200, and the rotating member 12 is disposed on a side wall of the carrying member 11 and is rotatably connected with the carrying member 11.

In this embodiment, the number of the rotating members 12 is two, and the two rotating members 12 are symmetrically distributed on two opposite sidewalls of the bearing member 11 and are respectively connected with the bearing member 11 in a rotating manner. Each rotating member 12 includes a rotating portion 121 and two pins 122, and the rotating portion 121 has a substantially disk shape and is rotatably connected to the carrier 11. Each of the pins 122 is substantially cylindrical, and the two pins 122 are disposed opposite to the same side of the rotating portion 121 facing away from the carrier 11.

The two positioning assemblies 20 are symmetrically disposed on the lower die 102 with respect to the central axis O of the carrier 11, and when the positioning die 100 is in the closed state as shown in fig. 3, the two positioning assemblies 20 are used for clamping and positioning the workpiece 200 carried on the carrier 11. Each positioning assembly 20 includes a positioning member 21, a linkage member 22, a pushing member 23, and an elastic member 24. The locating piece 21 is located one side of the bearing piece 11 and is arranged on the lower die 102, one end of the linkage piece 22 is connected with the locating piece 21, and the other end of the linkage piece 22 is movably connected with the bolt 122. The pushing member 23 movably passes through between the lower die 102 and the upper die 101 and abuts against the positioning member 21. The elastic member 24 is sleeved at one end of the pushing member 23 away from the upper die 101 and is connected with the lower die 102. In the present embodiment, the elastic member 24 is a spring.

In this way, by arranging the pushing member 23 and the elastic member 24, when the positioning mold 100 is opened, the pushing member 23 pushes the positioning member 21 to move away from the bearing member 11 under the driving of the elastic member 24, so that a preset placing gap 211 as shown in fig. 1 is formed between the positioning member 21 and the bearing member 11, so that the distance between the two positioning members 21 is larger than the length dimension of the deformed workpiece 200 and the length dimension of the undeformed workpiece 200, thereby being convenient for an operator or a manipulator to rapidly place the workpiece 200 on the bearing member 11, avoiding collision between the workpiece 200 and the positioning member 21, being beneficial to shortening the positioning operation time of the workpiece 200 and further improving the positioning efficiency. In addition, one end of the linkage piece 22, which is far away from the corresponding positioning piece 21, is movably connected with the bolt 122 arranged on the rotating part 121, as shown in fig. 4, when the positioning mold 100 is closed, the pushing piece 23 compresses the elastic piece 24 to the lower mold 102 and drives the positioning piece 21 to move towards the bearing piece 11 under the driving of the upper mold 101, meanwhile, the two positioning pieces 21 synchronously move relatively under the limit of the cooperation of the linkage piece 22 and the bolt 122 connected with the two positioning pieces, so that the workpiece 200 is positioned on the bearing piece 11 in a centering manner, the positioning precision is improved, the upper mold 101 bends the two opposite ends of the clamped and positioned workpiece 200, and the bent two opposite ends of the workpiece 200 are kept at the same distance from the main body part of the workpiece 200, so that the bending precision is improved.

In this embodiment, the number of the linkage members 22, the pushing members 23 and the elastic members 24 in each positioning assembly 20 is two. The linkage members 22 are approximately Z-shaped, two linkage members 22 in the same positioning assembly 20 are respectively arranged on two opposite sides of the bearing member 11, one end of each linkage member 22 is connected with the positioning member 21, the other end of each linkage member 22 is respectively movably connected with a corresponding bolt 122, and the two linkage members 22 on the same side of the bearing member 11 are arranged in a staggered manner in the direction of the upper die 101 towards the lower die 102. The two pushing members 23 in the same positioning assembly 20 are perpendicular to the upper die 101 and the lower die 102 and are arranged on the lower die 102 at intervals. Two elastic members 24 in the same positioning assembly 20 are respectively connected with corresponding pushing members 23.

The positioning member 21 includes a positioning portion 212, a protruding portion 213, and a stopper portion 214. The positioning portion 212 is substantially rectangular, and the positioning portion 212 is slidably disposed on the lower die 102 and connected to the linkage 22, and the positioning portion 212 is used for clamping and positioning the workpiece 200 carried on the carrier 11. The protruding portion 213 is substantially plate-shaped, the protruding portion 213 is protruding from a side wall of the positioning portion 212 and abuts against the pushing member 23, and the protruding portion 213 is driven by the pushing member 23 to move toward or away from the carrier 11. The limiting portion 214 is substantially L-shaped, the limiting portion 214 is disposed on a side of the lower die 102 facing the upper die 101, and a limiting groove 2141 is disposed on a side of the limiting portion 214 facing the positioning portion 212, and the limiting groove 2141 accommodates and limits the protruding portion 213.

In this way, by providing the limiting portion 214 with the limiting groove 2141, so as to accommodate and position the protruding portion 213 in the limiting groove 2141, the protruding portion 213 is prevented from moving along the mold opening direction of the positioning mold 100 under the pushing of the pushing member 23, so that the protruding portion 213 always moves along the extending direction of the limiting groove 2141, that is, the protruding portion 213 moves along the direction of one positioning assembly 20 toward the other positioning assembly 20, which is beneficial to improving the positioning stability of the positioning member 21, and further improving the positioning stability of the positioning mold 100.

In the present embodiment, the number of the protruding portions 213 and the limiting portions 214 in each positioning member 21 is two, the two protruding portions 213 are respectively protruding on two opposite sidewalls of the positioning portion 212, the two protruding portions 213 are respectively abutted against the two pushing members 23 in the same positioning assembly 20, and the two limiting portions 214 respectively accommodate the corresponding protruding portions 213.

In the present embodiment, the positioning portion 212 is provided with a profiling positioning groove 2121 on a side facing the carrier 11, the profiling positioning groove 2121 is adapted to the workpiece 200, and the two positioning portions 212 respectively accommodate opposite ends of the workpiece 200 through the profiling positioning groove 2121, so that the two positioning portions 212 stably position the workpiece 200, thereby avoiding the workpiece 200 after positioning from shaking during bending operation, and being beneficial to improving positioning accuracy.

In this embodiment, the positioning portion 212 is further provided with a guiding inclined surface 2122, and the guiding inclined surface 2122 is provided at one end of the positioning portion 212 facing the upper die 101 and is connected to the groove bottom of the profiling positioning groove 2121.

In the present embodiment, the side of each projection 213 facing the push piece 23 is provided with a push fitting surface 2131.

The positioning piece 21 further comprises an elastic portion 215, two ends of the elastic portion 215 are respectively connected with the lower die 102 and one side of the positioning portion 212, which is away from the carrier 11, and the elastic portion 215 is used for driving the positioning portion 212 to move towards the carrier 11. In this embodiment, the elastic portion 215 is a spring.

Thus, by providing the elastic portion 215, when the positioning mold 100 is closed, the elastic portion 215 provides elastic force and drives the positioning portion 212 to move towards the carrier 11, so as to improve the driving force of the positioning portion 212 moving towards the carrier 11, so that the positioning portion 212 rapidly and stably positions the workpiece 200, and the positioning portion 212 is prevented from moving towards the carrier 11 by the boss 213 only depending on the friction between the pushing member 23 and the boss 213, thereby being beneficial to improving the positioning stability and the positioning efficiency.

The linkage piece 22 is close to the one end that rotates the piece 12 and all is equipped with kidney-shaped groove 221, and kidney-shaped groove 221 runs through linkage piece 22 and holds corresponding bolt 122, and kidney-shaped groove 221's cell wall butt in the periphery side of bolt 122, kidney-shaped groove 221 and bolt 122 cooperate and are used for driving two setting elements 21 synchronous motion.

In this way, through setting up kidney slot 221 with the one end that link 22 was kept away from setting element 21, make two links 22 that are located the same side of setting element 21 pass through kidney slot 221 respectively with corresponding bolt 122 swing joint, when positioning die 100 compound die, two links 22 move towards bearing member 11 under the drive of setting element 21, simultaneously, the cell wall of every kidney slot 221 supports respectively pushes against corresponding bolt 122 in order to drive rotation portion 121 rotation, make two links 22 synchronous relative movement under the rotation effect of rotation portion 121, thereby make two setting elements 21 drive synchronous relative movement respectively under two links 22, and position work piece 200 to bearing member 11 in the middle of, and then be favorable to improving positioning accuracy.

The pushing member 23 includes a pushing body 231, a pushing portion 232 and a connecting portion 233 respectively provided at upper and lower ends of the pushing body 231. The pushing body 231 is substantially rectangular and movably disposed between the lower mold 102 and the upper mold 101, the pushing body 231 and the lower mold 102 are respectively abutted against two ends of the elastic member 24, and the pushing body 231 is used for pressing the elastic member 24 to the lower mold 102 under the driving of the upper mold 101. The pushing portion 232 is substantially prismatic, and the pushing portion 232 is protruding on the upper end of the pushing body 231 and is abutted against the pushing adapting surface 2131, and the pushing portion 232 is used for pushing the protruding portion 213 through the pushing adapting surface 2131 under the driving of the pushing body 231. The connecting portion 233 is substantially cylindrical, the connecting portion 233 is connected to an end of the pushing portion 232 away from the upper die 101 and penetrates through the elastic member 24, and the connecting portion 233 is used for limiting the elastic member 24.

In this way, the pushing portion 232 is convexly arranged at the upper end of the pushing main body 231, so that the pushing main body 231 is driven by the upper die 101 to drive the pushing portion 232 to move synchronously, interference between the pushing portion 232 and the upper die 101 in the moving process is avoided, the operation stability of the pushing piece 23 is improved, and the positioning stability is further improved. In addition, the connecting portion 233 is disposed through the elastic member 24, so that the connecting portion 233 guides the elastic member 24, and the elastic member 24 is always compressed or restored along the extending direction of the connecting portion 233, thereby improving the stability of the elastic member 24 in improving the elasticity and further improving the positioning stability.

In this embodiment, the side of the pushing portion 232 facing the protruding portion 213 is provided with a pushing inclined plane 2321, so, when the positioning mold 100 is closed, the pushing portion 232 slides to push the pushing adapting surface 2131 through the pushing inclined plane 2321, so that the protruding portion 213 moves towards the carrier 11 by virtue of the friction between the pushing inclined plane 2321 and the pushing adapting surface 2131, and the positioning portion 212 stably positions the workpiece 200 carried by the carrier 11, thereby improving positioning stability.

Referring to fig. 1, the upper die 101 includes a driving plate 30, two driving rods 40, an upper die plate 50 and two bending members 60. The driving plate 30 is substantially plate-shaped, and the driving plate 30 is disposed on a side of the carrier 11 facing away from the lower die 102. The driving rods 40 are substantially cylindrical, and the two driving rods 40 are respectively connected with the driving plate 30 and respectively correspond to the pushing members 23, and the two driving rods 40 are used for pushing the pushing members 23 to move towards the lower die 102 under the driving of the driving plate 30. The upper template 50 is substantially plate-shaped, and the upper template 50 and the carrier 11 are respectively disposed on two opposite sides of the driving plate 30. The bending members 60 are approximately cuboid, a C-shaped groove is formed in one side, away from the upper die plate 50, of each bending member 60 towards the other bending member 60, two bending members 60 are arranged on the upper die plate 50 at intervals and respectively penetrate through the driving plate 30, and the two bending members 60 are used for bending opposite ends of the positioned workpiece 200 under the driving of the upper die plate 50.

In this way, by arranging the upper die plate 50 and the bearing member 11 on opposite sides of the driving plate 30 respectively, the driving plate 30 can move close to the lower die 102 before the upper die plate 50 when the positioning die 100 is clamped, so that the driving plate 30 drives the two positioning assemblies 20 to relatively move and position the workpiece 200 borne on the bearing member 11 through the two driving rods 40, and then the upper die plate 50 drives the two bending members 60 to move close to the lower die 102, so that the two bending members 60 bend opposite ends of the workpiece 200 which is already positioned, and the phenomenon that the distances between the opposite ends of the bent workpiece 200 and the main body part of the workpiece 200 which is not bent due to bending of the bending members 60 are unequal when the workpiece 200 is not positioned is avoided, which is beneficial to improving bending stability. In addition, when the positioning die 100 is closed, the two bending members 60 move into the profiling positioning groove 2121 under the guide of the guide inclined surface 2122, so that the two bending members 60 bend the opposite ends of the positioned workpiece 200 accurately, and bending accuracy is further improved.

In this embodiment, the number of the driving rods 40 may be four, where two driving rods 40 and two other driving rods 40 are symmetrically disposed relative to the central axis O, any two driving rods 40 located on the same side of the central axis O are disposed at intervals along the direction perpendicular to the central axis O, and the four driving rods 40 and the four pushing members 23 are respectively in one-to-one correspondence.

Referring to fig. 3 and 4, the upper mold 101 further includes a guide post 70, where the guide post 70 is disposed through the driving plate 30 and connected to the upper mold plate 50, and the guide post 70 is disposed through the lower mold 102, where the guide post 70 is used for guiding the upper mold plate 50 and the driving plate 30, so that the driving rod 40 can stably push the pushing member 23, improving positioning stability, and meanwhile, the bending member 60 can stably bend the workpiece 200, thereby improving bending stability.

In this embodiment, the number of the guide posts 70 is four, wherein two guide posts 70 and two other guide posts 70 are symmetrically arranged relative to the central axis O, and any two guide posts 70 located on the same side of the central axis O are arranged at intervals along the direction perpendicular to the central axis O.

The working process of the positioning mold 100 is as follows:

firstly, the positioning mold 100 is in an open mold state, and the pushing piece 23 pushes the positioning piece 21 to move away from the bearing piece 11 under the drive of the elastic piece 24, so that a preset placing gap 211 is formed between the positioning piece 21 and the bearing piece 11, so that the distance between the two positioning pieces 21 is larger than the length dimension of the deformed workpiece 200 and the length dimension of the undeformed workpiece 200, thereby facilitating an operator or a manipulator to rapidly place the workpiece 200 on the bearing piece 11, avoiding collision between the workpiece 200 and the positioning piece 21, being beneficial to shortening the positioning operation time, and further improving the positioning efficiency;

then, the positioning mold 100 is closed, and the driving plate 30 drives the two driving rods 40 to move towards the corresponding pushing pieces 23 respectively, so that the pushing pieces 23 compress the elastic pieces 24 under the driving of the upper mold 101;

then, the elastic portion 215 provides elastic force and drives the positioning portion 212 and the linkage members 22 to move towards the bearing member 11, and at the same time, the slot wall of the kidney-shaped slot 221 of each linkage member 22 respectively pushes the corresponding bolt 122 to drive the rotating portion 121 to rotate, so that two linkage members 22 oppositely arranged in the positioning assembly 20 synchronously and relatively move under the rotation action of the rotating portion 121, so that the two positioning portions 212 clamp and position the workpiece 200 borne by the bearing member 11 through the profiling positioning slots 2121, and the workpiece 200 is centered on the bearing member 11, thereby improving positioning accuracy;

finally, the positioning mold 100 continues to be assembled, and the upper mold plate 50 drives the two bending pieces 60 to move towards the lower mold 102, so that the two bending pieces 60 are accurately inserted into the profiling positioning groove 2121 under the guidance of the guiding inclined plane 2122, and the two bending pieces 60 accurately bend the opposite ends of the workpiece 200, so that bending precision is improved.

Finally, it should be noted that the above embodiments are merely for illustrating the technical solution of the present application and not for limiting, and although the present application has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the technical solution of the present application may be modified or substituted without departing from the spirit and scope of the technical solution of the present application.

Claims (10)

1. The utility model provides a positioning die, includes relative last mould and lower mould that sets up, its characterized in that, positioning die still includes:

the bearing assembly comprises a bearing piece and a rotating piece, wherein the bearing piece is arranged on the lower die and used for bearing a workpiece, and the rotating piece is arranged on the side wall of the bearing piece and is in rotating connection with the bearing piece;

the two positioning assemblies are symmetrically arranged on the lower die relative to the central axis of the bearing piece and are used for clamping and positioning the workpiece borne on the bearing piece;

each of the positioning assemblies includes:

the positioning piece is positioned at one side of the bearing piece and is arranged on the lower die;

one end of the linkage piece is connected with the positioning piece, and the other end of the linkage piece is movably connected with the rotating piece;

the pushing piece is movably arranged between the lower die and the upper die in a penetrating manner and is abutted against the positioning piece;

the elastic piece is sleeved at one end of the pushing piece, which is far away from the upper die, and is connected with the lower die;

when the upper die and the lower die are opened, the elastic piece drives the pushing piece to push the positioning piece to be far away from the bearing piece, so that a preset placing gap is formed between the positioning piece and the corresponding bearing piece, and when the upper die and the lower die are closed, the upper die pushes the pushing piece to compress the elastic piece downwards and drive the positioning piece to move close to the bearing piece, so that the two positioning pieces synchronously move relatively under the cooperation of the linkage piece and the rotating piece, and clamp and position the workpiece borne on the bearing piece.

2. The positioning die of claim 1 wherein said positioning member comprises:

the positioning part is arranged on the lower die in a sliding manner and is connected with the linkage piece, and the positioning part is used for clamping and positioning the workpiece borne on the bearing piece;

the bulge part is convexly arranged on the side wall of the positioning part and is abutted against the pushing piece, and the bulge part is used for moving close to or far away from the bearing piece under the driving of the pushing piece;

and the limiting part is arranged on one side of the lower die facing the upper die, and one side of the limiting part facing the positioning part is provided with a limiting groove, and the limiting groove is used for accommodating and limiting the protruding part.

3. The positioning die of claim 2 wherein said abutment comprises:

the pushing main body is movably arranged between the lower die and the upper die in a penetrating manner, the pushing main body and the lower die are respectively abutted to two ends of the elastic piece, and the pushing main body is used for pushing down the elastic piece to the lower die under the driving of the upper die;

the pushing part is convexly arranged on one side of the pushing main body facing the upper die and is abutted against the protruding part, and the pushing part is used for pushing the protruding part under the driving of the pushing main body;

the connecting part is connected with one end of the pushing part, which is away from the upper die, and penetrates through the elastic piece, and the connecting part is used for limiting the elastic piece.

4. The positioning die of claim 3 wherein,

the side of the pushing part facing the protruding part is provided with a pushing inclined plane, the side of the protruding part facing the pushing part is provided with a pushing adapting surface, and the pushing part slides to push the pushing adapting surface through the pushing inclined plane so as to drive the protruding part to move.

5. The positioning die of claim 2 wherein,

the positioning part is provided with a profiling positioning groove towards one side of the bearing piece, the profiling positioning groove is matched with the workpiece, and the positioning part clamps and positions the workpiece borne on the bearing piece through the profiling positioning groove.

6. The positioning die of claim 2 wherein the positioning member further comprises:

and the two ends of the elastic part are respectively connected with the lower die and one side of the positioning part, which is away from the bearing piece, and the elastic part is used for driving the positioning part to move towards the bearing piece.

7. The positioning die of claim 1 wherein,

the rotating piece comprises a rotating part and two bolts, the rotating part is rotationally connected with the bearing piece, and the two bolts are oppositely arranged on the same side of the rotating part, which is away from the bearing piece;

the linkage piece is adjacent the one end of rotating the piece is equipped with the kidney slot, the kidney slot runs through the linkage piece and holds corresponding bolt, just the cell wall butt in the periphery side of bolt in kidney slot, kidney slot with the bolt cooperatees and is used for driving two setting element synchronous motion.

8. The positioning die of claim 5 wherein said upper die comprises:

the driving plate is arranged on one side of the bearing piece, which is away from the lower die;

the two driving rods are respectively connected with the driving plate and respectively correspond to the pushing pieces, and are used for pushing the pushing pieces to move towards the lower die under the driving of the driving plate;

the upper template and the bearing piece are respectively arranged on two opposite sides of the driving plate;

the two bending pieces are arranged on the upper die plate at intervals and respectively penetrate through the driving plate, and the two bending pieces are used for bending opposite ends of the workpiece after being positioned under the driving of the upper die plate.

9. The positioning die of claim 8 wherein the positioning die comprises a plurality of positioning elements,

the positioning part is also provided with a guide inclined plane, the guide inclined plane is arranged at one end of the positioning part facing the upper die and is connected with the bottom of the profiling positioning groove, and the guide inclined plane is used for guiding the bending piece.

10. The positioning die of claim 8 wherein said upper die further comprises:

the guide post penetrates through the driving plate and is connected with the upper die plate, the guide post penetrates through the lower die, and the guide post is used for guiding the driving rod and the bending piece.