Workpiece bending die

Abstract

The utility model discloses a workpiece bending die, and relates to the technical field of dies, the workpiece bending die comprises an upper die base and a lower die base, the bottom of the upper die base is provided with a punch clamping plate, the punch clamping plate is fixedly connected with bending punches which are symmetrically arranged, the bottom of the punch clamping plate is provided with a back stripping plate, and the back stripping plate is fixedly connected with the lower die base. A gap exists between the back stripping plate and the punch clamping plate, a stripping plate is fixedly connected to the bottom of the back stripping plate, moving channels which are symmetrically arranged are formed in the stripping plate, bending pieces are slidably connected into the moving channels, and the bending punch penetrates through the back stripping plate and extends into the moving channels to make contact with the tops of the bending pieces; a lower die plate is arranged at the top of the lower die base, a containing cavity is formed in the lower die plate, lower die parts which are symmetrically arranged and used for containing products are fixedly connected into the containing cavity, bending grooves are formed in the lower die parts, and the bottom ends of the bending parts stretch out of the stripper plate and stretch into the bending grooves. And by arranging the bending piece, the bending quality is guaranteed.

Description

Technical Field

[0001] The utility model relates to a mold, more specifically, to a workpiece bending mold. Background Art

[0002] Molds are various molds and tools used in industrial production to obtain the required products by injection molding, blow molding, extrusion, die casting or forging, smelting, stamping and other methods.

[0003] When existing die-casting molds bend products, most of them bend the products directly in the vertical direction when the upper mold base is pressed down. The bending effect is poor. When a 90° bend is required, the bending quality cannot be guaranteed.

[0004] Therefore, a new solution needs to be proposed to solve this problem. Utility Model Content

[0005] In order to solve the above technical problems, the utility model provides a workpiece bending die.

[0006] The technical solution of the utility model is:

[0007] A workpiece bending mold comprises an upper mold base and a lower mold base, a punch clamp is provided at the bottom of the upper mold base, bending punches arranged symmetrically with each other are fixedly connected to the punch clamp, a back strip plate is provided at the bottom of the punch clamp, and there is a gap between the back strip plate and the punch clamp, a stripper plate is fixedly connected to the bottom of the back strip plate, and moving channels arranged symmetrically with each other are provided on the stripper plate, a bending part is slidably connected in the moving channel, the bending punch passes through the back stripper plate and extends into the moving channel to contact the top of the bending part; a lower mold base is provided at the top, an accommodating cavity is provided on the lower mold base, lower mold parts arranged symmetrically for placing products are fixedly connected in the accommodating cavity, a bending groove is provided on the lower mold part, and the bottom end of the bending part extends out of the stripper plate and extends into the bending groove.

[0008] The utility model is further configured such that the back-off plate and the punch clamping plate are fixedly connected via a plurality of die springs.

[0009] The utility model is further configured such that the two movable channels are both inclined and the distance between them decreases from top to bottom; a first slider is fixedly connected to the side of the bending part close to the back-peeling plate; and a first sliding groove is provided on the inner side wall of the movable channel to slide with the first slider.

[0010] The utility model is further configured such that a first elastic member is fixedly connected to the inner bottom wall of the first slide groove, and one end of the first elastic member away from the inner bottom wall of the first slide groove abuts against the first slider, and the first elastic member has elastic deformation potential energy for driving the first slider close to the stripping plate.

[0011] The present invention is further configured such that the bottom ends of the two bending parts are arranged on a side close to each other in an arc shape.

[0012] The utility model is further configured such that a stripping piece is movably connected to the lower die part in a vertical direction, and the top end of the stripping piece extends into the bending groove.

[0013] The utility model is further configured such that a through groove connected to the bending groove is provided at the bottom of the lower mold part, the stripping piece is slidably connected to the inner wall of the through groove, a second sliding groove connected to the through groove is also provided at the bottom of the lower mold part, and a second slider is fixedly connected to one side of the stripping piece to slide with the second sliding groove.

[0014] The utility model is further configured such that a lower pad is fixedly connected between the lower die base and the lower template, a force transmission pin is movably connected to the lower pad in a vertical direction, and the top of the force transmission pin contacts the bottom of the stripping piece.

[0015] The utility model is further configured such that a groove for the force transmission pin to extend into is provided on the lower mold base, a second elastic member is provided on the inner bottom wall of the groove, the top end of the second elastic member is in contact with the bottom end of the force transmission pin, the second elastic member has elastic deformation potential energy for driving the force transmission pin to extend out of the groove, and a through hole is provided on the lower pad for the force transmission pin to pass through.

[0016] The beneficial technical effects of the utility model are:

[0017] By setting a bending part, and the two moving channels are both inclined and the distance between them decreases from top to bottom, the two bending parts are inclined and moved obliquely, and the product is pushed obliquely, so that the bending effect of the product is better and the product quality is guaranteed. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a cross-sectional view of the utility model;

[0019] Figure 2 yes Figure 1 Enlarged view of point A in the middle;

[0020] Figure 3 It is a top view of the lower die base of the utility model.

[0021] In the figure, 1. upper die seat; 2. upper pad; 3. punch clamp; 31. bending punch; 4. back stripping plate; 5. stripping plate; 51. moving channel; 511. first slide groove; 52. bending part; 521. first slider; 522. guide part; 53. first elastic part; 6. lower die seat; 61. force transmission pin; 62. groove; 621. second elastic part; 7. lower pad; 8. lower template; 81. lower die part; 811. bending groove; 812. second slide groove; 82. stripping part; 821. second slider; 9. guide plate. DETAILED DESCRIPTION

[0022] In order to more clearly understand the technical means of the present invention and implement it according to the contents of the specification, the specific implementation methods of the present invention are further described in detail below in conjunction with the drawings and examples. The following examples are used to illustrate the present invention but are not used to limit the scope of the present invention.

[0023] A workpiece bending die, such as Figure 1 and Figure 2 As shown, it includes an upper die base 1 and a lower die base 6.

[0024] like Figure 1 and Figure 2 As shown, the bottom of the upper die base 1 is fixedly connected to an upper pad 2, the bottom of the upper pad 2 is fixedly connected to a punch clamp 3, and bending punches 31 arranged symmetrically with each other are fixedly connected to the punch clamp 3, and the bottom of the punch clamp 3 is fixedly connected to a back stripping plate 4 through a number of mold springs, so that there is a gap between the back stripping plate 4 and the punch clamp 3, so that the back stripping plate 4 and the punch clamp 3 can be close to each other, and the mold spring is compressed and reset by the elasticity of the mold spring; the bottom of the back stripping plate 4 is fixedly connected to a stripping plate 5, and the stripping plate 5 is provided with a moving channel 51 arranged symmetrically with each other, and a bending part 52 is slidably connected in the moving channel 51, and the bending punch 31 passes through the back stripping plate 4 and extends into the moving channel 51 to contact the top of the bending part 52, so that the bending punch 31 can resist the bending part 52 and drive the bending part 52 to move downward;

[0025] like Figure 1 and Figure 2 As shown, the top of the lower die base 6 is fixedly connected to a lower pad 7, the top of the lower pad 7 is fixedly connected to a lower template 8, the lower template 8 is provided with an accommodating cavity, and the accommodating cavity is fixedly connected with lower die parts 81 for placing the product, which are symmetrically arranged with each other. The lower die part 81 is provided with a bending groove 811, and the bottom end of the bending part 52 extends out of the stripper plate 5 and extends into the bending groove 811;

[0026] like Figure 1 and Figure 2As shown, the two moving channels 51 are tilted and the distance between them decreases from top to bottom, so that the two moving channels 51 are distributed in an eight-shaped shape, and the two bending members 52 are also distributed in an eight-shaped shape and tilted, so that the bending member 52 moves downwardly. The bending member 52 is fixedly connected to the side of the back-off plate 4 with a first slider 521. The inner side wall of the moving channel 51 is provided with a first slide groove 511 that slides with the first slider 521. The inner bottom wall of the first slide groove 511 is fixedly connected to a first elastic member 53. The first elastic member 53 adopts a spring. The end away from the inner bottom wall of the first slide groove 511 abuts against the first slider 521. The first elastic member 53 has elastic deformation potential energy that drives the first slider 521 to approach the stripper plate 5. The arrangement of the first slider 521 and the first slide groove 511 restricts the movement trajectory of the bending member 52, making the movement of the bending member 52 more stable. In addition, the arrangement of the first elastic member 53 can reset the bending member 52 through the elasticity of the first elastic member 53. The bending member 52 moves obliquely downward, so that the bending member 52 pushes the product obliquely, thereby achieving a better bending effect on the product.

[0027] like Figure 1 and Figure 2 As shown, the lower mold part 81 is movably connected with a stripper 82 in the vertical direction, and the top of the stripper 82 extends into the bending groove 811. The bottom of the lower mold part 81 is provided with a through groove connected to the bending groove 811, and the stripper 82 is slidably connected to the inner wall of the through groove. The bottom of the lower mold part 81 is also provided with a second slide groove 812 connected to the through groove, and one side of the stripper 82 is fixedly connected with a second slider 821 that slides with the second slide groove 812; by setting the second slider 821 and the second slide groove 812, the moving trajectory of the stripper 82 is limited, and the stability of the movement of the stripper 82 is ensured; the lower pad 7 is movably connected with a force transmission pin 61 in the vertical direction, and the top of the force transmission pin 61 contacts the bottom of the stripper 82, and the lower mold base 6 is provided with a groove 62 for the force transmission pin 61 to extend into. A second elastic member 621 is provided on the inner bottom wall of 62. The second elastic member 621 adopts a spring, and the elastic force of the second elastic member 621 is smaller than the elastic force of the mold spring. The top of the second elastic member 621 conflicts with the bottom of the force transmission pin 61. The second elastic member 621 has elastic deformation potential energy to drive the force transmission pin 61 to extend out of the groove 62. A through hole for the force transmission pin 61 to pass through is provided on the lower pad 7; when the upper mold base 1 is pressed down, the bending member 52 extends into the bending groove 811 and squeezes the stripping member 82, thereby squeezing the force transmission pin 61, causing the second elastic member 621 to be compressed. When the upper mold base 1 is away from the lower mold base 6, the second elastic member 621 returns to its original state through its own elasticity, lifts the force transmission pin 61, and drives the stripping member 82 to extend into the bending groove 811, thereby realizing the resetting of the stripping member 82.

[0028] like Figure 1 and Figure 2As shown, the bottom ends of the two bending parts 52 are close to each other on one side and are provided with an arc-shaped guide portion 522. The guide portion 522 has a good guiding effect, making the bending of the product more convenient, and the central angle of the guide portion 522 is 45°, so that the two ends of the guide portion 522 form a horizontal portion and a vertical portion respectively. A clearance groove is provided on the top of the stripper 82 toward the side between the two lower mold parts 81, which can make way for the bending of the product to prevent obstruction of the bending of the product, and the horizontal portion conflicts with the top of the stripper 82, thereby ensuring the conflict effect of the bending part 52 on the stripper 82; the vertical portion at the bottom of the bending part 52 is horizontally arranged with the inner side wall of the bending groove 811. When the bending part 52 is pressed down to the bottom, the vertical portion conflicts with the bent product, and the product also conflicts with the inner side wall of the bending groove 811, so that the product can be bent 90° more stably, ensuring the stability of the bending.

[0029] like Figure 1 and Figure 3 As shown, guide plates 9 are symmetrically arranged on the top of the lower template 8. The product is placed between the two guide plates 9, which can perform rough positioning of the product. PIN needles are provided on the top of the lower template 8 between the two guide plates 9 to cooperate with the product to achieve precise positioning, thereby ensuring the stability of product positioning and further ensuring the bending effect.

[0030] Working principle: Move the upper die base 1 away from the lower die base 6, and place the product to be bent between the two lower die parts 81, with both ends of the product located at the openings of the bending groove 811. When the upper die base 1 approaches the lower die base 6, the stripper plate 5 contacts the lower template 8. At this time, the bending member 52 contacts the product to be bent and squeezes the product to be bent, causing the bending member 52 to extend into the bending groove 811. At this time, the two ends of the product are bent at 45 degrees. At this time, the stripper 82 is squeezed by the bending member 52, and the second elastic member 621 is compressed.

[0031] Continue to press down the upper die base 1, the stripper plate 5 and the back stripper plate 4 together approach the punch clamp 3, at this time the die spring is compressed, the bending punch 31 extends further out of the back stripper plate 4, and contacts the bending member 52, causing the bending member 52 to extend further into the bending groove 811. At this time, the first elastic member 53 is compressed, and the bending member 52 continues to bend the product until the vertical portion of the bending member 52 contacts the bent product, and the product also contacts the inner wall of the bending groove 811. Since the vertical portion and the inner wall of the bending groove 811 are horizontally arranged, the two ends of the product are bent into 90 degrees.

[0032] When the bending is completed, the upper die base 1 moves away from the lower die base 6, the bending part 52 gradually extends out of the bending groove 811, and the mold spring resets. At this time, the first elastic part 53 and the second elastic part 621 are also reset in succession. When the second elastic part 621 is reset, the force transmission pin 61 is lifted up, and the stripping part 82 is driven to extend into the bending groove 811, lifting the bent product and realizing the reset of the stripping part 82.

[0033] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. It should be pointed out that ordinary technicians in this technical field can make several improvements and modifications without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as within the scope of protection of the present invention.

Claims

1. A workpiece bending die, comprising an upper die base (1) and a lower die base (6), characterized in that: The bottom of the upper die base (1) is provided with a punch clamp (3), and the punch clamp (3) is fixedly connected with bending punches (31) arranged symmetrically with each other. The bottom of the punch clamp (3) is provided with a back stripping plate (4), and there is a gap between the back stripping plate (4) and the punch clamp (3). The bottom of the back stripping plate (4) is fixedly connected with a stripping plate (5), and the stripping plate (5) is provided with moving channels (51) arranged symmetrically with each other, and a bending member (52) is slidably connected in the moving channel (51). The bending punch (31) passes through the back stripping plate (4) and extends into the moving channel (51) to contact the top of the bending part (52); a lower template (8) is provided on the top of the lower die base (6), and an accommodating cavity is provided on the lower template (8), and lower die parts (81) for placing products that are symmetrically arranged are fixedly connected in the accommodating cavity, and a bending groove (811) is provided on the lower die part (81), and the bottom end of the bending part (52) extends out of the stripping plate (5) and extends into the bending groove (811).

2. The workpiece bending die according to claim 1, characterized in that: The back stripping plate (4) and the punch clamping plate (3) are fixedly connected via a plurality of die springs.

3. The workpiece bending die according to claim 1, characterized in that: The two movable channels (51) are both inclined and the distance between them decreases from top to bottom. A first slider (521) is fixedly connected to the side of the bending member (52) close to the back plate (4). A first sliding groove (511) that slides with the first slider (521) is provided on the inner side wall of the movable channel (51).

4. The workpiece bending die according to claim 3, characterized in that: A first elastic member (53) is fixedly connected to the inner bottom wall of the first chute (511), and one end of the first elastic member (53) away from the inner bottom wall of the first chute (511) abuts against the first slider (521). The first elastic member (53) has elastic deformation potential energy for driving the first slider (521) to approach the stripping plate (5).

5. The workpiece bending die according to claim 1, characterized in that: A guide portion (522) is provided on one side of the bottom ends of the two bending parts (52) close to each other.

6. The workpiece bending die according to claim 1, characterized in that: A stripping piece (82) is movably connected to the lower die part (81) in the vertical direction, and the top end of the stripping piece (82) extends into the bending groove (811).

7. The workpiece bending die according to claim 6, characterized in that: A through groove communicating with the bending groove (811) is provided at the bottom of the lower mold part (81), and the stripping piece (82) is slidably connected to the inner wall of the through groove. A second sliding groove (812) communicating with the through groove is also provided at the bottom of the lower mold part (81), and a second slider (821) slidably engaged with the second sliding groove (812) is fixedly connected to one side of the stripping piece (82).

8. The workpiece bending die according to claim 7, characterized in that: A lower pad (7) is fixedly connected between the lower die base (6) and the lower die plate (8), and a force transmission pin (61) is movably connected to the lower pad (7) in the vertical direction, and the top of the force transmission pin (61) contacts the bottom of the stripping piece (82).

9. The workpiece bending die according to claim 8, characterized in that: The lower die base (6) is provided with a groove (62) for the force transmission pin (61) to extend into, and a second elastic member (621) is provided on the inner bottom wall of the groove (62). The top end of the second elastic member (621) contacts the bottom end of the force transmission pin (61), and the second elastic member (621) has elastic deformation potential energy for driving the force transmission pin (61) to extend out of the groove (62). The lower pad (7) is provided with a through hole for the force transmission pin (61) to pass through.

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