Automobile rear floor side plate progressive forming die and forming process thereof

Abstract

The invention relates to an automobile rear floor side plate progressive forming die and a forming process thereof. The automobile rear floor side plate progressive forming die is characterized by comprising a die base, a trimming die, a calendaring die, a bending die, a shaping die, a punching die and a cutting die. A one-die two-outlet mode is adopted, the production efficiency can be multiplied, in the edge cutting operation, two material holes in the middle of a plate are punched and formed in a step-by-step punching mode, and deformation caused by synchronous punching of the plate is avoided; the third blanking hole in the edge position is formed in a synchronous blanking mode, the punching deformation quantity is small, simultaneous punching can be carried out, and the efficiency is improved; when the third blanking hole is punched and formed, redundant edge materials in the middle of the plate are bent to prevent interference on subsequent calendering; the conditions that one-time bending is not in place and a bending area on the plate rebounds are avoided, a shaping station is added, and after the plate is bent, a side pressing die is adopted to guarantee shaping of the bending position; and the forming quality of the product is ensured.

Description

Technical Field

[0001] The invention relates to the technical field of automobile parts processing, in particular to a progressive forming die for a side panel of an automobile rear floor and a forming process thereof. Background Art

[0002] When processing and forming the side of the rear floor of the car, progressive die processing is generally adopted; conventional progressive die processing and forming adopts a one-die-one-out forming method. On the one hand, this forming method has low production efficiency for this product, and on the other hand, it is easy to cause sheet deformation caused by irregular cutting edge areas during the production process; later, a one-die-two-out processing method was adopted; however, in the processing of the side panel of the rear floor of the car, the contour edge material on the sheet and the waste material between adjacent products were not removed by step-by-step removal and partition removal, but by overall punching, which caused the problem of sheet deformation; in addition, when bending the product on the sheet, the one-time bending forming is prone to the situation that the bending part is not in place, affecting the quality of the product. Summary of the invention

[0003] The technical problem to be solved by the present invention is to provide a progressive forming die and a forming process for the side panels of the rear floor of an automobile, which can solve the problem that when the side panels of the rear floor of a general automobile are formed, the plate is directly punched in multiple areas simultaneously, resulting in deformation or even tearing of the plate, and the plate edge is formed by a single bending forming, resulting in incomplete bending.

[0004] In order to solve the above technical problems, the technical solution of the present invention is: a progressive forming die for a rear floor side panel of an automobile, the innovation of which is that it comprises a die base, a trimming die, a calendering die, a bending die, a shaping die, a punching die and a cutting die; The mold base realizes one mold and two outputs by processing the sheet material; the mold base is provided with a trimming station, a calendering station, an empty station, a bending station, a shaping station, a punching station and a cutting station along the extension direction; the trimming mold is arranged at the trimming station of the mold base; the calendering mold is arranged at the calendering station of the mold base; the bending mold is arranged at the bending station of the mold base; the shaping mold is arranged at the shaping station of the mold base; the punching mold is arranged at the punching station of the mold base; the cutting mold is arranged at the cutting station of the mold base; The trimming stations include a first trimming station, a second trimming station and a third trimming station; The trimming die at the first trimming station is provided with a positioning edge hole, a progressive hole and a first blanking hole; the positioning edge hole is located near one end of the trimming die; the progressive hole is located on the horizontal center line of the trimming die; the first blanking hole is located on one side of the horizontal center line of the trimming die; The trimming die of the second trimming station is provided with a second blanking hole, and the second blanking hole is located on the other side of the horizontal center line of the trimming die; the second blanking hole has the same structure as the first blanking hole, and the inner contour of the sheet material on both sides of the horizontal center line is cut on the sheet material through the first blanking hole and the second blanking hole; The trimming die at the third trimming station is provided with a third blanking hole, and the third blanking hole has a pair and is located at the edge position of the sheet metal being formed; the sheet metal cutting area of ​​the third blanking hole is connected to the second blanking hole and the inner contour area of ​​the sheet metal after the first blanking hole is processed, so as to realize the outer contour forming of the sheet metal; the trimming die at the third trimming station is provided with a first bending hole at the horizontal center line position of the trimming die, so as to realize that when the third blanking hole is formed, the excess waste material at the horizontal center line position of the sheet metal is bent at the first bending hole at the same time; The calendering die at the calendering station is provided with calendering grooves on both sides of the center line of the die base; The empty workstation is provided with a first sheet material placement seat after the sheet material is calendered, and the first sheet material placement seat is provided with a concave cavity for accommodating the sheet material after calendering and for placing the sheet material; The bending die at the bending station is provided with a placement groove corresponding to the calendering groove, and the bending die at the bending station is provided with a side cavity for accommodating the bending of the sheet near the edge of the sheet; The shaping mold at the shaping station is provided with a second sheet material placement seat after the sheet material is bent, and the second sheet material placement seat is provided with a cavity for placing the sheet material after the sheet material is bent; a side pressing mold is provided on the side of the second sheet material placement seat, and the side pressing mold is driven by a cylinder from the side direction of the mold base to press the side pressing mold on the bending position of the sheet material for pressing and shaping; The punching die arranged at the punching station is provided with a U-shaped blanking hole, a waist-shaped blanking hole and a circular blanking hole; the U-shaped blanking hole, the waist-shaped blanking hole and the circular blanking hole are each provided in a pair and are symmetrically arranged on both sides of the horizontal center line of the die base, the U-shaped blanking hole is used to punch a U-shaped groove at the edge position of one side of the sheet material; the waist-shaped blanking hole is used to punch a waist-shaped hole at the middle position of the sheet material; the circular blanking hole is used to punch a circular hole at the edge position of the sheet material close to the other side; The cutting die at the cutting station is provided with an inner frame blanking hole; the inner frame blanking hole is located at the horizontal midline position of the die base, and is used to cut the connection between two automobile rear floor side panels connected on the sheet material, and discharge slopes are provided on the die base on both sides of the inner frame blanking hole, which are used to output the formed automobile rear floor side panels from the progressive die after cutting.

[0005] Furthermore, an upper punch die is correspondingly arranged at each station on the mold base, and a punch is correspondingly arranged at each station on the upper punch die.

[0006] A progressive forming process for a rear floor side panel of an automobile, the innovation of which is as follows: S1: Sheet positioning and trimming: Place the sheet from the feed port into a one-die two-outlet progressive die; at the first trimming station of the progressive die, use the upper punch and the trimming die to process the positioning edge hole, progressive hole and first blanking hole, and the three are formed simultaneously; S2: Second trimming of the sheet: At the second trimming station of the progressive die, the upper punch cooperates with the trimming die to complete the forming of the second blanking hole; S3: The third trimming of the sheet: At the third trimming station of the progressive die, the upper punch cooperates with the trimming die to complete the forming of the third blanking hole, and at the same time, the excess edge material of the sheet after the first blanking hole is processed is punched and bent downward at the middle position of the sheet; S4: sheet material rolling: the sheet material after the three trimming operations is moved to the rolling station of the progressive die, and the upper punch and the rolling die are used to complete the rolling of the concave position on the sheet material to form a rolling groove; after the sheet material is rolled, it is moved to an empty station of the progressive die for placement; S5: Sheet bending: Move the sheet after the sheet rolling operation and the empty station placement operation to the bending station of the progressive die; punch and bend the edge area of ​​the sheet after bending downwards through the cooperation of the upper punch and the bending die to form a U-shaped cross-section structure; S6: Sheet shaping: Move the sheet after the sheet bending operation to the shaping station of the progressive die, and use the side pressure die on one side of the shaping die to press the sheet side to keep the sheet bending forming state; S7: Sheet punching: Move the sheet after the sheet shaping operation to the punching station of the progressive die, and use the upper punch and the punching die to complete the punching of the U-shaped blanking hole, waist-shaped blanking hole and circular blanking hole on the sheet; S8: Sheet cutting and forming: After the sheet punching operation is completed, the sheet is moved to the cutting station of the progressive die, and the upper punch cooperates with the cutting die to complete the inner frame blanking processing, and finally realizes the processing and forming of the rear floor side panel of the automobile.

[0007] The advantages of the present invention are: 1) In the present invention, the rear floor side panel of the automobile adopts a one-die-two-out method when performing progressive die forming, which can double the production efficiency; in addition, during the trimming operation, the two material holes in the middle position of the sheet are punched and formed by a step-by-step punching method to avoid deformation of the sheet caused by synchronous punching; and the third blanking hole at the edge position is formed by a synchronous blanking method, and its punching deformation is small, so it can be punched simultaneously to improve efficiency; when punching and forming the third blanking hole, the excess edge material in the middle position of the sheet should be bent at the same time to prevent interference with subsequent calendering; in the subsequent bending operation, in order to avoid the situation where the bending is not in place at one time and the bending area on the sheet rebounds, a finalizing station is added in the present forming process, and a side pressure mold is used after the sheet bending operation to ensure the finalization of the bending part; the forming quality of the product is guaranteed. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0009] Figure 1 The present invention is a structural diagram of a progressive molding die for a rear floor side panel of an automobile.

[0010] Figure 2 The present invention is a partial enlarged view of a progressive forming die for a rear floor side panel of an automobile.

[0011] Figure 3 The present invention is a partial view of a progressive forming die for a side panel of a rear floor of an automobile.

[0012] Figure 4 The present invention is a progressive molding material strip diagram of a rear floor side panel of an automobile.

[0013] Figure 5 The present invention is a progressive forming process flow chart of a rear floor side panel of an automobile. DETAILED DESCRIPTION

[0014] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0015] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0016] like Figures 1 to 5 The progressive forming die for the rear floor side panel of an automobile shown in the figure comprises a die base 1, a trimming die 2, a calendering die 3, a bending die 4, a shaping die 5, a punching die 6 and a cutting die 7.

[0017] The mold base 1 realizes one mold and two outputs by processing the sheet material; a trimming station 11, a calendering station 21, an empty station 31, a bending station 41, a shaping station 51, a punching station 61 and a cutting station 71 are arranged on the mold base 1 along the extension direction; the trimming mold 2 is arranged at the trimming station 11 of the mold base 1; the calendering mold 3 is arranged at the calendering station 21 of the mold base 1; the bending mold 4 is arranged at the bending station 41 of the mold base 1; the shaping mold 5 is arranged at the shaping station 51 of the mold base 1; the punching mold 6 is arranged at the punching station of the mold base 1; and the cutting mold 7 is arranged at the cutting station 71 of the mold base 1.

[0018] The trimming station 11 includes a first trimming station 12 , a second trimming station 13 and a third trimming station 14 .

[0019] The trimming die 2 at the first trimming station 12 is provided with a positioning edge hole 121, a progressive hole 122 and a first blanking hole 123; the positioning edge hole 121 is located near one end of the trimming die 2; the progressive hole 122 is located on the horizontal center line of the trimming die 2; the first blanking hole 123 is located on one side of the horizontal center line of the trimming die 2.

[0020] A second blanking hole 131 is provided on the trimming die of the second trimming station 13, and the second blanking hole 131 is located on the other side of the horizontal center line of the trimming die 2; the second blanking hole 131 has the same structure as the first blanking hole 123, and the inner contour of the sheet on both sides of the horizontal center line is cut on the sheet through the first blanking hole 123 and the second blanking hole 131.

[0021] A third blanking hole 141 is provided on the trimming die 2 at the third trimming station 14, and the third blanking hole 141 has a pair and is located at the edge position of the sheet metal forming; the sheet metal cutting area of ​​the third blanking hole 141 is connected to the inner contour area of ​​the sheet metal after the second blanking hole 131 and the first blanking hole 123 are processed, so as to realize the outer contour forming of the sheet metal; a first bending hole 15 is provided on the trimming die 2 at the third trimming station 14 at the horizontal center line position of the trimming die 2, so as to realize that when the third blanking hole 141 is formed, the excess waste material at the horizontal center line position of the sheet metal is bent at the first bending hole 15.

[0022] The calendering die 3 at the calendering station 21 is provided with calendering grooves 22 on both sides of the center line of the die base.

[0023] A first sheet material placement seat 32 for sheet materials after calendering is arranged at the empty work station 31, and a concave cavity for accommodating the sheet materials after calendering and for placing the sheet materials is arranged on the first sheet material placement seat 32.

[0024] The bending die 4 at the bending station 41 is provided with a placement groove corresponding to the calendering groove, and the bending die 4 at the bending station 41 is provided with a side cavity 42 for accommodating the bending of the sheet material near the edge of the sheet material.

[0025] The shaping mold 5 at the shaping station 51 is provided with a second sheet material placement seat 52 after the sheet material is bent, and the second sheet material placement seat 52 is provided with a cavity for placing the sheet material after the sheet material is bent; a side pressure mold 53 is provided on the side of the second sheet material placement seat 52, and the side pressure mold 53 is driven by a cylinder from the side direction of the mold base 1 to press the side pressure mold 53 on the sheet material bending position for pressing and shaping.

[0026] The punching die 6 arranged at the punching station 61 is provided with a U-shaped blanking hole 62, a waist-shaped blanking hole 63 and a circular blanking hole 64; the U-shaped blanking hole 62, the waist-shaped blanking hole 63 and the circular blanking hole 64 each have a pair and are symmetrically arranged on both sides of the horizontal center line of the die base 1, the U-shaped blanking hole 62 is used to punch a U-shaped groove at the edge position of one side of the sheet material; the waist-shaped blanking hole 63 is used to punch a waist-shaped hole in the middle position of the sheet material; the circular blanking hole 64 is used to punch a circular hole near the edge position of the other side of the sheet material.

[0027] An inner frame blanking hole 72 is provided on the cutting die 7 at the cutting station 72; the inner frame blanking hole 72 is located at the horizontal midline position of the die base 1, and is used to cut the connection between two automobile rear floor side panels connected on the sheet material, and discharge slopes are provided on the die base 1 on both sides of the inner frame blanking hole 72, which are used to output the formed automobile rear floor side panels from the progressive die after cutting.

[0028] An upper punch is correspondingly arranged at each station on the mold base 1, and a punch is correspondingly arranged at each station on the upper punch.

[0029] A progressive forming process for a rear floor side panel of an automobile, the specific forming process is as follows: S1: Sheet positioning and trimming: Place the sheet from the feed port into a one-die two-outlet progressive die; at the first trimming station of the progressive die, use the upper punch and the trimming die to process the positioning edge hole, progressive hole and first blanking hole, and the three are formed simultaneously; S2: Second trimming of the sheet: At the second trimming station of the progressive die, the upper punch cooperates with the trimming die to complete the forming of the second blanking hole; S3: The third trimming of the sheet: At the third trimming station of the progressive die, the upper punch cooperates with the trimming die to complete the forming of the third blanking hole, and at the same time, the excess edge material of the sheet after the first blanking hole is processed is punched and bent downward at the middle position of the sheet; S4: sheet material rolling: the sheet material after the three trimming operations is moved to the rolling station of the progressive die, and the upper punch and the rolling die are used to complete the rolling of the concave position on the sheet material to form a rolling groove; after the sheet material is rolled, it is moved to an empty station of the progressive die for placement; S5: Sheet bending: Move the sheet after the sheet rolling operation and the empty station placement operation to the bending station of the progressive die; punch and bend the edge area of ​​the sheet after bending downwards through the cooperation of the upper punch and the bending die to form a U-shaped cross-section structure; S6: Sheet shaping: Move the sheet after the sheet bending operation to the shaping station of the progressive die, and use the side pressure die on one side of the shaping die to press the sheet side to keep the sheet bending forming state; S7: Sheet punching: Move the sheet after the sheet shaping operation to the punching station of the progressive die, and use the upper punch and the punching die to complete the punching of the U-shaped blanking hole, waist-shaped blanking hole and circular blanking hole on the sheet; S8: Sheet cutting and forming: After the sheet punching operation is completed, the sheet is moved to the cutting station of the progressive die, and the upper punch cooperates with the cutting die to complete the inner frame blanking processing, and finally realizes the processing and forming of the rear floor side panel of the automobile.

[0030] Those skilled in the art should understand that the present invention is not limited to the above-mentioned embodiments. The above-mentioned embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may be subject to various changes and improvements, and these changes and improvements shall all fall within the scope of the present invention claimed for protection.

Claims

1. A progressive forming die for a rear floor side panel of an automobile, characterized in that: Including mold base, trimming mold, calendering mold, bending mold, shaping mold, punching mold and cutting mold; The mold base realizes one mold and two outputs by processing the sheet material; the mold base is provided with a trimming station, a calendering station, an empty station, a bending station, a shaping station, a punching station and a cutting station along the extension direction; the trimming mold is arranged at the trimming station of the mold base; the calendering mold is arranged at the calendering station of the mold base; the bending mold is arranged at the bending station of the mold base; the shaping mold is arranged at the shaping station of the mold base; the punching mold is arranged at the punching station of the mold base; the cutting mold is arranged at the cutting station of the mold base; The trimming stations include a first trimming station, a second trimming station and a third trimming station; The trimming die at the first trimming station is provided with a positioning edge hole, a progressive hole and a first blanking hole; the positioning edge hole is located near one end of the trimming die; the progressive hole is located on the horizontal center line of the trimming die; the first blanking hole is located on one side of the horizontal center line of the trimming die; The trimming die of the second trimming station is provided with a second blanking hole, and the second blanking hole is located on the other side of the horizontal center line of the trimming die; the second blanking hole has the same structure as the first blanking hole, and the inner contour of the sheet material on both sides of the horizontal center line is cut on the sheet material through the first blanking hole and the second blanking hole; The trimming die at the third trimming station is provided with a third blanking hole, and the third blanking hole has a pair and is located at the edge position of the sheet metal being formed; the sheet metal cutting area of ​​the third blanking hole is connected to the second blanking hole and the inner contour area of ​​the sheet metal after the first blanking hole is processed, so as to realize the outer contour forming of the sheet metal; the trimming die at the third trimming station is provided with a first bending hole at the horizontal center line position of the trimming die, so as to realize that when the third blanking hole is formed, the excess waste material at the horizontal center line position of the sheet metal is bent at the first bending hole at the same time; The calendering die at the calendering station is provided with calendering grooves on both sides of the center line of the die base; The empty workstation is provided with a first sheet material placement seat after the sheet material is calendered, and the first sheet material placement seat is provided with a concave cavity for accommodating the sheet material after calendering and for placing the sheet material; The bending die at the bending station is provided with a placement groove corresponding to the calendering groove, and the bending die at the bending station is provided with a side cavity for accommodating the bending of the sheet near the edge of the sheet; The shaping mold at the shaping station is provided with a second sheet material placement seat after the sheet material is bent, and the second sheet material placement seat is provided with a cavity for placing the sheet material after the sheet material is bent; a side pressing mold is provided on the side of the second sheet material placement seat, and the side pressing mold is driven by a cylinder from the side direction of the mold base to press the side pressing mold on the bending position of the sheet material for pressing and shaping; The punching die arranged at the punching station is provided with a U-shaped blanking hole, a waist-shaped blanking hole and a circular blanking hole; the U-shaped blanking hole, the waist-shaped blanking hole and the circular blanking hole are each provided in a pair and are symmetrically arranged on both sides of the horizontal center line of the die base, the U-shaped blanking hole is used to punch a U-shaped groove at the edge position of one side of the sheet material; the waist-shaped blanking hole is used to punch a waist-shaped hole at the middle position of the sheet material; the circular blanking hole is used to punch a circular hole at the edge position of the sheet material close to the other side; The cutting die at the cutting station is provided with an inner frame blanking hole; the inner frame blanking hole is located at the horizontal midline position of the die base, and is used to cut the connection between two automobile rear floor side panels connected on the sheet material, and discharge slopes are provided on the die base on both sides of the inner frame blanking hole, which are used to output the formed automobile rear floor side panels from the progressive die after cutting.

2. The progressive forming die for the rear floor side panel of an automobile according to claim 1, characterized in that: An upper punching die is correspondingly arranged at each station on the mold base, and a punch is correspondingly arranged at each station on the upper punching die.

3. A progressive forming process for a rear floor side panel of an automobile, characterized in that: The specific molding process is as follows: S1: Sheet positioning and trimming: Place the sheet from the feed port into a one-die two-outlet progressive die; at the first trimming station of the progressive die, use the upper punch and the trimming die to process the positioning edge hole, progressive hole and first blanking hole, and the three are formed simultaneously; S2: Second trimming of the sheet: At the second trimming station of the progressive die, the upper punch cooperates with the trimming die to complete the forming of the second blanking hole; S3: The third trimming of the sheet: At the third trimming station of the progressive die, the upper punch cooperates with the trimming die to complete the forming of the third blanking hole, and at the same time, the excess edge material of the sheet after the first blanking hole is processed is punched and bent downward at the middle position of the sheet; S4: sheet material rolling: the sheet material after the three trimming operations is moved to the rolling station of the progressive die, and the upper punch and the rolling die are used to complete the rolling of the concave position on the sheet material to form a rolling groove; after the sheet material is rolled, it is moved to an empty station of the progressive die for placement; S5: Sheet bending: Move the sheet after the sheet rolling operation and the empty station placement operation to the bending station of the progressive die; punch and bend the edge area of ​​the sheet after bending downwards through the cooperation of the upper punch and the bending die to form a U-shaped cross-section structure; S6: Sheet shaping: Move the sheet after the sheet bending operation to the shaping station of the progressive die, and use the side pressure die on one side of the shaping die to press the sheet side to keep the sheet bending forming state; S7: Sheet punching: Move the sheet after the sheet shaping operation to the punching station of the progressive die, and use the upper punch and the punching die to complete the punching of the U-shaped blanking hole, waist-shaped blanking hole and circular blanking hole on the sheet; S8: Sheet cutting and forming: After the sheet punching operation is completed, the sheet is moved to the cutting station of the progressive die, and the upper punch cooperates with the cutting die to complete the inner frame blanking processing, and finally realizes the processing and forming of the rear floor side panel of the automobile.

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