Forming die for automobile back door plate

Abstract

The utility model discloses a forming die of an automobile back door plate, which relates to the technical field of forming dies, and comprises an upper die and a lower die, an elastic guide piece is arranged between the upper die and the lower die, the upper die comprises an upper die plate, the bottom of the upper die plate is fixedly connected with an upper die fixing plate, and the upper die fixing plate is fixedly connected with the lower die. The bottom of the upper die fixing plate is fixedly connected with a female die fixing plate, and the bottom of the female die fixing plate is provided with a pressing block which elastically stretches out and draws back in the vertical direction. The lower die comprises a material pressing ring, a male die fixing plate, a connecting plate and a lower die plate. By arranging the elastic guide piece, the positioning column, the elastic support and the first guide column, the stability and reliability of the movement stroke of the die system are improved, the upper die is unloaded by arranging the material pressing block, the second guide column and the supporting spring, and the lower die is unloaded by arranging the material pressing ring, the elastic support and the connecting plate. The problems that an automobile back door plate forming die is inaccurate in positioning, unstable in pressure distribution, uneven in die gap, too high in stamping speed and capable of sticking materials during demolding and unloading are solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to forming die technical field, concretely is a kind of forming die of automobile back door plate. BACKGROUND

[0002] Automobile back door plate is an important automobile interior trim part.The existing automobile back door plate processing technology is to stamp the sheet metal part into the required shape by stamping die, and cutting and removing corner materials.Forming die is the first sequence die of automobile back door plate product, and it is the most critical process, and whether back door plate forming die is qualified directly relates to the final qualified rate of product.

[0003] Automobile back door plate has the characteristics of complex shape, three-dimensional curved surface and large deformation, and there are hidden troubles such as corrugation and wrinkle on the surface of sheet metal caused by unstable pressure distribution due to inaccurate positioning of die, uneven gap of die and too fast stamping speed during forming, and there may be sticking problem when demolding and unloading each time after forming due to the close adhesion between back door plate and punch and die, which will affect production efficiency and product quality.

[0004] Therefore, in view of the above problems, we provide a forming die for automobile back door plate by optimizing die design. UTILITY MODEL CONTENTS

[0005] The utility model aims at providing a forming die for automobile back door plate, which solves the problems of inaccurate positioning, unstable pressure distribution, uneven gap of die, too fast stamping speed and sticking during demolding and unloading of automobile back door plate forming die.

[0006] To achieve the above object, the utility model provides the following technical scheme: a forming die for automobile back door plate, comprising upper die and lower die, wherein elastic guide is arranged between the upper die and the lower die, the upper die comprises upper die plate, the upper die plate is fixedly connected with upper die fixed plate at the bottom, the upper die fixed plate is fixedly connected with die fixed plate at the bottom, the die fixed plate is provided with pressure block which can vertically and elastically stretch at the bottom;

[0007] The lower die comprises pressure ring, punch fixed plate, connecting plate and lower die plate, the pressure ring is provided with positioning column, the pressure ring and the lower die plate are fixedly connected with the movable end and the fixed end of elastic support respectively, the movable end of the elastic support penetrates through the punch fixed plate, the fixed end of the elastic support penetrates through the connecting plate, the pressure ring and the connecting plate are connected with guide column one, the guide column one penetrates through the punch fixed plate, and the punch fixed plate is fixedly connected with the lower die plate.

[0008] Preferably, the elastic guide piece comprises an outer guide sleeve, an inner guide sleeve, a polished rod and a spring one, the outer guide sleeve is fixed on the upper die plate and sleeved on the inner guide sleeve, the inner guide sleeve is sleeved on the polished rod and abuts against the spring one, the spring one is sleeved on the polished rod, and the polished rod is fixed on the convex die fixed plate.

[0009] Preferably, the movable end top of the elastic support protrudes above the pressure ring, and the height of the movable end top of the elastic support protruding above the pressure ring is higher than that of the positioning column.

[0010] Preferably, the concave die fixed plate is provided with a guide positioning hole at the bottom, the guide positioning hole is matched in size with the positioning column and the movable end of the elastic support, and the guide positioning holes on the two sides of the concave die fixed plate matched with the positioning column are arranged on the pressure blocks.

[0011] Preferably, the concave die fixed plate is provided with a guide positioning hole at the bottom, the guide positioning hole is matched in size with the positioning column and the movable end of the elastic support, and the guide positioning holes on the two sides of the concave die fixed plate matched with the positioning column are arranged on the pressure blocks.

[0012] Preferably, the elastic support comprises a movable rod, a fixed sleeve and a spring two, the fixed sleeve is fixedly connected to the lower die plate, the spring two is arranged in the fixed sleeve in the vertical direction, the lower end of the movable rod abuts against the spring two and is movably connected in the fixed sleeve, and the upper end of the movable rod is fixedly connected to the pressure ring.

[0013] The utility model has the following beneficial effects:

[0014] 1. The utility model discloses a spring one, a spring two and a spring three are arranged on the polished rod, the spring one is arranged in the outer guide sleeve, the spring two is arranged in the fixed sleeve, and the spring three is arranged in the fixed sleeve, so that the polished rod is guided and buffered by the elastic guide piece, the positioning column is used for positioning the sheet metal, the elastic support is used for guiding and buffering the pressure ring, and the guide column one is used for guiding the pressure ring.

[0015] 2. The utility model discloses a pressure block, a guide column two and a supporting spring are arranged on the upper die, a pressure ring, an elastic support and a connecting plate are arranged on the lower die, so that the problem of sticking of the automobile back door plate forming die is solved. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is the front view of the utility model;

[0017] Figure 2 It is the perspective view of the utility model from view one;

[0018] Figure 3The utility model discloses a perspective view two stereogram;

[0019] Figure 4 The utility model discloses a partial structure section view of elastic guide and pressure material block position place;

[0020] Figure 5 The utility model discloses a partial structure section view of elastic support position place.

[0021] In the drawing: 1, elastic guide; 11, outer guide sleeve; 12, inner guide sleeve; 13, polished rod; 14, spring one; 21, upper die plate; 22, upper die fixed plate; 23, concave die fixed plate; 231, pressure material block; 2311, guide hole; 232, guide positioning hole; 233, sliding slot; 234, guide column two; 235, support spring; 31, pressure material ring; 311, positioning column; 32, male die fixed plate; 33, connecting plate; 34, lower die plate; 35, elastic support; 351, movable rod; 352, fixed sleeve; 353, spring two; 36, guide column one. DETAILED DESCRIPTION

[0022] The technical scheme in the embodiments of the utility model will be apparently and completely described below with the drawings in the embodiments of the utility model, and obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the person skilled in the art without creative work belong to the range of protection of the utility model.

[0023] As Figures 1-5 The utility model provides a kind of technical scheme: a forming die of automobile back door plate, including upper die and lower die, elastic guide 1 is equipped between upper die and lower die, elastic guide 1 includes outer guide sleeve 11, inner guide sleeve 12, polished rod 13 and spring one 14, outer guide sleeve 11 is fixed on upper die plate 21 and is set on inner guide sleeve 12, inner guide sleeve 12 is set on polished rod 13 and with spring one 14, spring one 14 is set on polished rod 13, polished rod 13 is fixed on male die fixed plate 32;

[0024] Upper die includes upper die plate 21, and upper die plate 21 bottom is fixedly connected with upper die fixed plate 22, and upper die fixed plate 22 bottom is fixedly connected with concave die fixed plate 23, and the middle part of concave die fixed plate 23 is used to fixedly connect with concave die insert block, and the bottom of concave die fixed plate 23 is equipped with pressure material block 231 that is vertically elastically stretched, and the bottom of concave die fixed plate 23 is close to the position of both sides and is provided with sliding slot 233, and pressure material block 231 is slidably assembled in sliding slot 233, and guide column two 234 and support spring 235 set on guide column two 234 are arranged in sliding slot 233, and the guide hole 2311 of pressure material block 231 is assembled with guide column two 234, and support spring 235 is elastically supported between sliding slot 233 and pressure material block 231.

[0025] The lower die comprises a pressure ring 31, a male die fixing plate 32, a connecting plate 33 and a lower die plate 34, the middle part of the male die fixing plate 32 is used to fix the male die insert matched with the female die insert, the die closing process of the female die insert and the male die insert is used for the sheet metal stamping forming of the back door plate, the pressure ring 31 is provided with a positioning column 311, the pressure ring 31 and the lower die plate 34 are fixedly connected with the movable end and the fixed end of the elastic support 35 respectively, the top of the movable end of the elastic support 35 extends to the top of the pressure ring 31, the height of the top of the movable end of the elastic support 35 extending to the top of the pressure ring 31 is higher than that of the positioning column 311, the movable end of the elastic support 35 penetrates through the male die fixing plate 32, the fixed end of the elastic support 35 penetrates through the connecting plate 33, the bottom of the female die fixing plate 23 is provided with a guide positioning hole 232, the guide positioning hole 232 is matched with the positioning column 311 and the movable end of the elastic support 35 in size, and the guide positioning hole 232 matched with the positioning column 311 on the two sides of the female die fixing plate 23 is arranged on the pressure block 231.

[0026] The elastic support 35 comprises a movable rod 351, a fixed sleeve 352 and a spring two 353, the fixed sleeve 352 is fixedly connected on the lower die plate 34, the spring two 353 is arranged in the fixed sleeve 352 along the vertical direction, the lower end of the movable rod 351 abuts against the spring two 353 and is movably connected in the fixed sleeve 352, and the upper end of the movable rod 351 is fixedly connected on the pressure ring 31.

[0027] A guide column one 36 is arranged between the pressure ring 31 and the connecting plate 33, the guide column one 36 penetrates through the male die fixing plate 32, and the male die fixing plate 32 is fixedly connected on the lower die plate 34.

[0028] In use, the upper die is ejected downward to move and close by the driving cylinder, stamping forming is carried out, when the die is closed, the upper die is guided and buffered to move downward by the elastic guide 1, the feeding position of the sheet metal is positioned by the positioning column 311, under the action of the upper die, the pressure ring 31 is pressed downward to move by the upper die, so that the female die insert and the male die insert are closed, the pressure ring 31 is guided and buffered to move downward by the elastic support 35, the connecting plate 33 is guided to move downward by the fixed sleeve 352 of the elastic support 35, the stability and reliability of the movement stroke of the die system are improved.

[0029] After forming, the upper die is reset to move upward and open by the driving cylinder, when the die is opened, the pressure block 231 continues to press on the edge of the sheet metal after the female die insert on the female die fixing plate 23 leaves the sheet metal under the supporting action of the supporting spring 235, so as to play a role of unloading, when the upper die leaves the lower die, the pressure ring 31 is lifted by the elastic support 35, and the formed sheet metal is separated from the male die insert on the male die fixing plate 32 to quickly unload.

[0030] It is to be noted that, in the present document, relational terms such as first and second and the like can be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises", "comprising", or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can include other elements not expressly listed or inherent to such process, method, article, or apparatus.

[0031] While the embodiments of the present application have been illustrated and described, it will be understood by those skilled in the art that various changes, modifications, substitutions, and alterations can be made therein without departing from the spirit and scope of the application, which is defined by the appended claims and their equivalents.

Claims

1. A forming die for an automotive back door panel comprising an upper die and a lower die, characterized by: The upper die and the lower die are provided with an elastic guide (1), the upper die comprises an upper die plate (21), the bottom of the upper die plate (21) is fixedly connected with an upper die fixed plate (22), the bottom of the upper die fixed plate (22) is fixedly connected with a concave die fixed plate (23), and the bottom of the concave die fixed plate (23) is provided with a pressure block (231) which is vertically elastically telescopic; The lower die comprises a pressure ring (31), a convex die fixed plate (32), a connecting plate (33) and a lower die plate (34), the pressure ring (31) is provided with a positioning column (311), the pressure ring (31) and the lower die plate (34) are fixedly connected with the movable end and the fixed end of an elastic support (35) respectively, the movable end of the elastic support (35) penetrates through the convex die fixed plate (32), the fixed end of the elastic support (35) penetrates through the connecting plate (33), a guide column I (36) is connected between the pressure ring (31) and the connecting plate (33), the guide column I (36) penetrates through the convex die fixed plate (32), and the convex die fixed plate (32) is fixedly connected on the lower die plate (34).

2. The forming die for a rear door panel of an automobile according to claim 1, characterized in that: The elastic guide (1) comprises an outer guide sleeve (11), an inner guide sleeve (12), a polished rod (13) and a spring I (14), the outer guide sleeve (11) is fixed on the upper die plate (21) and is sleeved on the inner guide sleeve (12), the inner guide sleeve (12) is sleeved on the polished rod (13) and abuts against the spring I (14), the spring I (14) is sleeved on the polished rod (13), and the polished rod (13) is fixed on the convex die fixed plate (32).

3. The forming die for a rear door panel of an automobile according to claim 1, characterized in that: The top of the movable end of the elastic support (35) extends to above the pressure ring (31) and protrudes, and the height of the top of the movable end of the elastic support (35) protruding above the pressure ring (31) is higher than that of the positioning column (311).

4. The forming die for a rear door panel of an automobile according to claim 1, characterized in that: The bottom of the concave die fixed plate (23) is provided with a guide positioning hole (232), the guide positioning hole (232) is matched in size with the positioning column (311) and the movable end of the elastic support (35), and the guide positioning holes (232) matched with the positioning columns (311) on the two sides of the concave die fixed plate (23) are arranged on the pressure block (231).

5. The forming die for a rear door panel of an automobile according to claim 1, characterized in that: The bottom of the concave die fixed plate (23) is provided with a sliding groove (233) near the two sides, the pressure block (231) is slidably assembled in the sliding groove (233), a guide column II (234) and a supporting spring (235) sleeved on the guide column II (234) are arranged in the sliding groove (233), the pressure block (231) is provided with a guide hole (2311) matched with the guide column II (234), and the supporting spring (235) is elastically supported between the sliding groove (233) and the pressure block (231).

6. The forming die for a rear door panel of an automobile according to claim 1, characterized in that: The elastic support (35) comprises a movable rod (351), a fixed sleeve (352) and a spring two (353), the fixed sleeve (352) is fixedly connected to the lower die plate (34), the spring two (353) is arranged in the fixed sleeve (352) vertically, the lower end of the movable rod (351) abuts against the spring two (353) and is movably connected in the fixed sleeve (352), and the upper end of the movable rod (351) is fixedly connected to the pressing ring (31).

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