CN217617008U - Sheet metal stamping and bending die - Google Patents

Abstract

The utility model provides a metal plate stamping and bending die, which comprises a lower die holder, an elastic support, a die core and an upper die holder, wherein the lower die holder is provided with a first table top, a second table top and a third table top which are distributed in a step shape from top to bottom in sequence; the elastic support is elastically connected right above the third table top and is used for supporting the plate to be bent in a matching way with the first table top; the die core is provided with a V-shaped groove extending along the axial direction of the die core, the corner center of the V-shaped groove is used for aligning a wire to be bent of a plate up and down, the die core has a first state that the die core rotates until the notch of the V-shaped groove faces upwards, and also has a second state that the die core rotates until the notch of the V-shaped groove faces towards the elastic support and the wall of the groove close to the elastic support is parallel to the second table top; and the upper die base is positioned right above the elastic support, and one side of the upper die base is provided with a blank holder which is vertically aligned with the line to be bent. The utility model provides a pair of sheet metal punching press mould of bending can reduce the surface scratch problem that causes when sheet metal conventionality is bent by a wide margin.

Description

Sheet metal stamping and bending die

Technical Field

The utility model belongs to the technical field of sheet metal bends, concretely relates to sheet metal punching press mould of bending.

Background

The bending forming of the metal plate is that the metal plate is subjected to elastic deformation under the action of matched extrusion of an upper die and a lower die of the bending machine, then enters into plastic deformation, along with the continuous pressing of the upper die on the metal plate, the metal plate is gradually close to the inner surface of a V-shaped groove of the lower die, the pressing is continued until the stroke is ended, the upper die and the lower die are enabled to be in complete contact with the metal plate, and the V-shaped bending is completed at the moment.

In the traditional metal plate bending forming, a V-groove die is fixed on a workbench, metal plates on two sides of a V-groove are tilted upwards during bending, a large plate piece needs to be matched and finished by multiple persons, and the labor intensity of workers is high; the die slides with the V-shaped groove due to bending and stretching of the plate in the stamping process, so that the surface of the plate is damaged, and the quality of the bending part of the plate is seriously influenced.

SUMMERY OF THE UTILITY MODEL

The embodiment of the utility model provides a sheet metal punching press mould of bending aims at solving the tradition and bends sheet metal surface damage to and bend the action and turn over from the tradition bend both sides and become one side and turn over one side translation from top to bottom by a small margin, reduced bending operator's intensity of labour by a wide margin, ensure the problem of shaping quality.

In order to achieve the above object, the utility model adopts the following technical scheme: the utility model provides a sheet metal punching press mould of bending includes:

the lower die base is provided with a first table top, a second table top and a third table top which are distributed in a step-shaped manner from top to bottom, a first vertical wall is arranged between the first table top and the second table top, and a second vertical wall is arranged between the second table top and the third table top;

the elastic support is elastically connected right above the third table top, is in up-and-down sliding contact with the second vertical wall and is used for supporting the plate to be bent in a matching manner with the first table top, and the side wall of the elastic support, the first vertical wall and the second table top enclose a containing groove;

the die core is arranged in the accommodating groove and is in sliding contact with each groove wall of the accommodating groove, the peripheral wall of the die core is provided with a V-shaped groove extending along the axial direction of the die core, the corner center of the V-shaped groove is used for aligning a wire to be bent of the plate up and down, the die core has a first state that the notch of the V-shaped groove is rotated to be upward, and also has a second state that the notch of the V-shaped groove is rotated to be toward the elastic support, and the groove wall close to the elastic support is parallel to the second table top;

the upper die holder is positioned right above the elastic support, one side of the upper die holder is provided with a blank holder, and the horizontal distance between the blank holder and the line to be bent is the thickness of the plate;

the blank pressing is used for pressing down the part of the plate located on one side of the line to be bent, so that the V-shaped groove is abutted against the first edge close to the elastic support to enable the mold core to rotate, and the second edge, far away from the elastic support, of the V-shaped groove is used for pushing the plate located on the other side of the line to be bent.

In a possible implementation manner, the third table top is provided with a baffle extending upwards, and the top surface of the baffle is flush with the horizontal plane where the corner center is located; the side surface of the baffle, the third table surface and the second vertical wall form a sliding chute.

In a possible realization mode, the elastic support is arranged in the sliding groove and is in sliding contact with the second vertical wall and the side surface of the baffle.

In a possible implementation manner, the elastic support comprises an elastic piece and a sliding block, wherein one end of the elastic piece is fixedly connected with the third table top, and the other end of the elastic piece extends upwards; the sliding block is fixedly connected with the extending end of the elastic piece, and the sliding block is connected in the sliding groove in a vertical sliding mode and used for supporting the plates.

In one possible implementation, the elastic member is a spring or a polyurethane elastic pad.

In a possible implementation mode, the two ends of the mold core are respectively and rotatably sleeved with the shaft sleeves, and the shaft sleeves are fixedly connected in the accommodating grooves.

In one possible implementation, the first edge and the second edge are both rounded structures.

In a possible implementation manner, the lower part of the side wall of the upper die base facing the first table top is an arc-shaped wall, and the combination position of the arc-shaped wall and the bottom wall of the upper die base is formed into a blank pressing.

In one possible implementation, the edges of the binder are rounded.

In one possible implementation, the angular center coincides with the axial center of the mold core.

The utility model provides a pair of sheet metal stamping bending die's beneficial effect lies in: compared with the prior art, the utility model provides a pair of sheet metal punching press mould of bending, the during operation, at first will be equipped with the mold core in V groove on wearing to locate the second mesa of die holder, then keep flat panel and respectively with first mesa, the V groove of mold core, elastic support up end butt, at last through the punching press of upper die base downwards, the first border atress upset in punching press process mold core V groove, the second border of mold core acts on panel and makes its bending, can form to bend until the mold core upset to the second state. Because the mold core can rotate in the bending process, one side of the plate abutting against the first edge is a main pressure bearing side, the side can keep a stable relative position relation with the pressure bearing side, so that the plate can be prevented from being damaged by the first edge, the side of the plate contacting with the second edge is not subjected to pressure resistance of the pressure bearing side, the plate can rotate along with the mold core and can be staggered with the second edge to adapt to the bending deformation of the plate, the pressure resistance between the plate and the second edge is gradually reduced along with the rotation of the mold core, so that the indentation generated by the second edge on the plate is small, the surface damage of the plate in the bending process can be reduced, and the bending quality is improved.

Drawings

Fig. 1 is a schematic view of an overall structure of a metal plate stamping and bending die before bending according to an embodiment of the present invention;

fig. 2 is a schematic side view of a metal plate stamping and bending die according to an embodiment of the present invention;

fig. 3 is a schematic view of an overall structure of a bent metal plate stamping and bending die provided in an embodiment of the present invention;

fig. 4 is a schematic view of a structure of a containing groove and a chute provided in the embodiment of the present invention;

fig. 5 is a schematic view of a mold core structure provided by the embodiment of the present invention.

In the figure: 1. a lower die holder; 10. a first table top; 11. a second table top; 12. a third table top; 120. a baffle plate; 13. a first vertical wall; 14. a second vertical wall; 2. an elastic support; 20. an elastic member; 21. a slider; 3. a plate material; 30. a wire to be bent; 31. a shaft sleeve; 4. a containing groove; 5. a mold core; 50. a V-shaped groove; 500. a first edge; 501. a second edge; 502. a corner center; 6. an upper die holder; 60. pressing edges; 600. an arcuate wall; 601. a bottom wall; 7. a chute.

Detailed Description

Reference will now be made in detail to the embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar functions throughout.

In the description of the present invention, it should be noted that the terms "upper", "lower", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to 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.

In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "communicating" are to be construed broadly, e.g., as meaning mechanically or electrically connected; the connection may be direct, indirect or internal, or may be a connection between two elements or an interaction relationship between two elements. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In order to make the technical problem, technical solution and advantageous effects to be solved by the present invention more clearly understood, the following description is given in conjunction with the accompanying drawings and embodiments to illustrate the present invention in further detail. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

Referring to fig. 1 to 5, a metal plate bending mold provided by the present invention will be described. The metal plate bending die comprises a lower die holder 1, an elastic support 2, a die core 5 and an upper die holder 6, wherein the lower die holder 1 is provided with a first table top 10, a second table top 11 and a third table top 12 which are distributed in a step shape from top to bottom in sequence, a first vertical wall 13 is arranged between the first table top 10 and the second table top 11, and a second vertical wall 14 is arranged between the second table top 11 and the third table top 12; the elastic support 2 is elastically connected right above the third table top 12, is in up-and-down sliding contact with the second vertical wall 14, is used for supporting the plate 3 to be bent in cooperation with the first table top 10, and the side wall of the elastic support 2, the first vertical wall 13 and the second table top 11 form an accommodating groove 4 in a surrounding mode; the mold core 5 is arranged in the accommodating groove 4 and is in sliding contact with each groove wall of the accommodating groove 4, the peripheral wall of the mold core 5 is provided with a V-shaped groove 50 extending along the axial direction of the mold core, an angle 502 of the V-shaped groove 50 is used for aligning the wire 30 to be bent of the plate 3 up and down, the mold core 5 has a first state that the notch of the V-shaped groove 50 faces upwards, and also has a second state that the notch of the V-shaped groove 50 faces the elastic support 2 and the groove wall close to the elastic support 2 is parallel to the second table top 11; the upper die holder 6 is positioned right above the elastic support 2, one side of the upper die holder is provided with a blank holder 60, and the horizontal distance between the blank holder 60 and the line 30 to be bent is the thickness of the plate 3; the blank holder 60 is used for pressing the part of the plate 3 located on one side of the line 30 to be bent, so as to press the V-groove 50 close to the first edge 500 of the elastic support 2 to rotate the mold core 5, and further push the plate 3 away from the second edge 501 of the elastic support 2 to the part located on the other side of the line 30 to be bent.

The utility model provides a pair of sheet metal punching press mould of bending's working method: firstly, the mold core 5 is rotated to a state that the opening of the V-shaped groove 50 is upward; then, the plate 3 is placed on the first table top 10 and the elastic support 2, the line 30 to be bent is aligned with the center 502 of the V-shaped groove 50, the position of the upper die holder 6 is adjusted according to the thickness of the plate 3, the blank holder 60 is horizontally spaced from the line 30 to be bent by the thickness of the plate 3, the upper die holder 6 immediately starts to punch downwards, the part of the plate 3 located right below the upper die holder 6 and the elastic support 2 move downwards along with the upper die holder 6, the V-shaped groove 50 of the die core 5 starts to rotate under the downward pressing of the upper die holder 6 until the first edge 500 of the V-shaped groove 50 of the die core 5 is turned to be horizontal, and the plate 3 is bent in the V-shaped groove 50. In the bending process, the upper die holder 6 presses downwards to enable the die core 5 to rotate, the first edge 500 of the V-shaped groove 50 can descend along with the rotation of the die core 5, and the second edge 501 of the V-shaped groove 50 acts on the plate 3 and pushes the plate 3 upwards to bend the plate 3.

Compared with the prior art, the utility model provides a sheet metal stamping bending die, lower die holder 1 has from top to bottom becomes step-like distributed's first mesa 10, second mesa 11, third mesa 12 in proper order, has first vertical wall 13 between first mesa 10 and the second mesa 11, has second vertical wall 14 between second mesa 11 and the third mesa 12, and the lateral wall of elastic support 2 encloses into storage tank 4 with first vertical wall 13, second mesa 11, can make things convenient for dismouting mold core 5, can prevent also that mold core 5 from taking place the skew when rotating, improves the bending quality; mold core 5 can rotate in the bending process, the top surface of sheet material 3 is abutted against blank holder 60 of upper mold base 6, the side of the bottom surface of sheet material 3 abutted against first edge 500 of V-groove 50 of mold core 5 is the main pressure side, along with the downward pressing of upper mold base 6, the pressure side is kept in relative position relation with blank holder 60, thereby being capable of avoiding the damage of first edge 500 to sheet material 3, and the pressure of one side of sheet material 3 in contact with second edge 501 is not resisted by edge 60, and being capable of being staggered with second edge 501 along with the rotation of mold core 5 to adapt to the bending deformation of sheet material 3, and the resisting pressure between sheet material 3 and second edge 501 is gradually reduced along with the rotation of mold core 5, therefore, the indentation of second edge 501 to sheet material 3 is smaller, thereby being capable of reducing the surface damage of sheet material 3 in the bending process, and improving the bending quality.

As a specific embodiment of the metal plate stamping and bending die provided by the present invention, please refer to fig. 1, the third table top 12 is provided with a baffle 120 extending upward, and the top surface of the baffle 120 is flush with the horizontal plane where the corner center 502 is located; the side face of the baffle 120, the third table face 12 and the second vertical wall 14 enclose a sliding groove 7, and the elastic support 2 is arranged in the sliding groove 7 and is in sliding contact with the side face of the second vertical wall 14 and the baffle 120. The top surface of the baffle 120 and the corner center 502 are located on the same horizontal plane, the baffle 120 can be used for limiting the downward pressing position of the upper die holder 6, and after the plate 3 is bent in place (the die core 5 rotates to the second state), the upper die holder 6 is pressed against the top surface of the baffle 120 at the moment, so that the influence of the downward pressing over position of the upper die holder 6 on the precision of the bending angle can be prevented; the sliding groove 7 enclosed by the side surface of the baffle 120, the third table surface 12 and the second vertical wall 14 is beneficial to the vertical sliding of the elastic support 2 in the sliding groove 7, and in addition, the sliding groove 7 can also prevent the elastic support 2 from generating horizontal displacement, so that the bending forming quality of the plate 3 is improved.

As a specific embodiment of the metal plate stamping and bending die provided by the present invention, please refer to fig. 1 and 4, the elastic support 2 includes an elastic member 20 and a slider 21, wherein one end of the elastic member 20 is fixedly connected to the third table 12, and the other end extends upward; the sliding block 21 is fixedly connected with the extending end of the elastic element 20, and the sliding block 21 is connected in the sliding groove 7 in a vertical sliding mode and used for supporting the plate 3. Slider 21 and 3 butts of panel, elastic component 20 one end and 12 fixed connection of third mesa, the other end and slider 21 fixed connection, after panel 3 pressurized, slider 21 moves down and provides the support elastic support effect to the pressurized side of panel 3 all the time, the completion back of bending, slider 21 resets to the horizontal plane with 5 axle centers of mold core through the elasticity of elastic component 20 on for accept the panel 3 of punching press next time, improved panel 3 bending's efficiency.

Specifically, the elastic member 20 is a spring or a polyurethane elastic pad.

As a specific embodiment of the metal plate stamping and bending die provided by the utility model, please refer to fig. 1 and fig. 2, the shaft sleeve 31 is sleeved and rotated respectively at the two ends of the die core 5, and the shaft sleeve 31 is fixedly connected in the storage tank 4. The shaft sleeve 31 in the accommodating groove 4 is convenient to disassemble and assemble, and can block the axial displacement of the mold core 5. Specifically, the first edge 500 and the second edge 501 are both rounded structures. When the upper die base 6 presses the plate 3 downwards, the first edge 500 and the second edge 501 of the V-shaped groove 50 are polished into round corners, and in order to prevent the plate 3 from being scratched on the surface of the plate 3 at the position where the plate 3 is abutted against the first edge 500 and the second edge 501 when the upper die base 6 presses the plate 3 downwards.

As a specific embodiment of the metal plate stamping and bending die provided by the present invention, please refer to fig. 1, the side wall of the upper die base 6 facing the first table top 10 is an arc-shaped wall 600, and the bottom wall 601 combining position of the arc-shaped wall 600 and the upper die base 6 is formed as the blank holder 60. The blank pressing 60 formed by the arc-shaped wall 600 and the bottom wall 601 of the upper die holder 6 saves materials and can improve the forming quality of the bent part of the plate 3.

As a specific embodiment of the metal plate stamping and bending die provided by the present invention, please refer to fig. 1 and 5, the angle 502 coincides with the axis of the die core 5. The angle 502 of the V-shaped groove 50 coincides with the axis of the mold core 5, the position of the angle 502 is unchanged when the mold core 5 is rotated, the first edge 500 and the second edge 501 of the V-shaped groove 50 rotate at a constant speed, the extrusion force of the plate 3 against the first edge 500 and the second edge 501 of the V-shaped groove 50 is reduced, and the bending quality is improved.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not intended to limit the present invention, and any modifications, equivalents, improvements, etc. made within the spirit and principles of the present invention should be included within the scope of the present invention.

Claims (10)

1. The utility model provides a sheet metal punching press mould of bending which characterized in that includes:

the lower die holder (1) is provided with a first table top (10), a second table top (11) and a third table top (12) which are sequentially distributed in a step shape from top to bottom, a first vertical wall (13) is arranged between the first table top (10) and the second table top (11), and a second vertical wall (14) is arranged between the second table top (11) and the third table top (12);

the elastic support (2) is elastically connected right above the third table top (12), is in up-and-down sliding contact with the second vertical wall (14), is used for supporting a plate (3) to be bent in a matched manner with the first table top (10), and surrounds a containing groove (4) with the side wall of the elastic support (2), the first vertical wall (13) and the second table top (11);

the die core (5) is arranged in the accommodating groove (4) and is in sliding contact with each groove wall of the accommodating groove (4), a V-shaped groove (50) extending along the axial direction of the die core (5) is formed in the peripheral wall of the die core (5), an angle center (502) of the V-shaped groove (50) is used for aligning a line (30) to be bent of the plate (3) up and down, the die core (5) has a first state that the notch of the V-shaped groove (50) rotates to face upwards, and also has a second state that the notch of the V-shaped groove (50) rotates to face the elastic support (2) and the groove wall close to the elastic support (2) is parallel to the second table top (11);

the upper die holder (6) is positioned right above the elastic support (2), a blank pressing (60) is arranged on one side of the upper die holder, and the horizontal distance between the blank pressing (60) and the line (30) to be bent is equal to the thickness of the plate (3);

the blank pressing device comprises a blank pressing device, a mould core (5) and a V-shaped groove (50), wherein the blank pressing device (60) is used for pressing down the part, located on one side of the line (30) to be bent, of the plate (3) so as to press against the first edge (500) of the V-shaped groove (50) close to the elastic support (2) to enable the mould core (5) to rotate, and then the part, located on the other side of the line (30) to be bent, of the plate (3) is jacked upwards by the second edge (501) of the V-shaped groove (50) far away from the elastic support (2).

2. The metal sheet stamping and bending die as recited in claim 1, wherein the third table top (12) is provided with a baffle (120) extending upwards, and the top surface of the baffle (120) is flush with the horizontal plane of the corner center (502); the side surface of the baffle plate (120), the third table surface (12) and the second vertical wall (14) enclose a sliding chute (7).

3. The metal sheet stamping and bending die according to claim 2, wherein the elastic support (2) is disposed in the sliding groove (7) and is in sliding contact with the second vertical wall (14) and the side surface of the baffle plate (120).

4. A sheet metal stamping and bending die as claimed in claim 3, wherein the resilient support (2) comprises:

one end of the elastic piece (20) is fixedly connected with the third table top (12), and the other end of the elastic piece extends upwards;

the sliding block (21) is fixedly connected with the extending end of the elastic piece (20), and the sliding block (21) is connected into the sliding groove (7) in a vertical sliding mode and used for supporting the plate (3).

5. A metal sheet stamping and bending die as claimed in claim 4, wherein the elastic member (20) is a spring or a polyurethane elastic pad.

6. The metal plate stamping and bending die as claimed in claim 1, wherein two ends of the die core (5) are respectively rotatably sleeved with a shaft sleeve (31), and the shaft sleeves (31) are fixedly connected in the accommodating grooves (4).

7. The sheet metal stamping and bending die of claim 1, wherein the first edge (500) and the second edge (501) are both rounded.

8. A metal plate stamping and bending die as claimed in claim 1, wherein the lower portion of the side wall of the upper die holder (6) facing the first table top (10) is an arc-shaped wall (600), and the combination position of the arc-shaped wall (600) and the bottom wall (601) of the upper die holder (6) is formed as the blank holder (60).

9. A sheet metal press bending die according to claim 8, wherein the edges of the binder (60) are rounded.

10. A sheet metal press bending die according to any of claims 1-9, wherein said angular center (502) coincides with the axial center of said die core (5).

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