Automobile rear floor trimming and punching die

Abstract

The utility model provides an automobile rear floor trimming and punching die. The automobile rear floor trimming and punching die comprises an upper die base and a lower die base. The upper pressure plate is connected with the upper die holder through an elastic mechanism; the punching modules are symmetrically arranged on the two sides of the upper pressing plate, and the tops of the punching modules are slidably connected with the upper die base. The plurality of upper trimming knife blocks are distributed inside or on the edge of the upper pressing plate; the lower material supporting structure consists of a plurality of material supporting blocks and is distributed in the lower die cavity of the lower die base; the pair of punching guide blocks are symmetrically arranged on the two sides of the lower material supporting structure and matched with the corresponding punching modules to complete punching at a certain angle; and the lower trimming cutter blocks are arranged opposite to the upper trimming cutter blocks. According to the utility model, the trimming and punching processes are integrated in the die, so that the times of die replacement and workpiece transfer are reduced, the production cycle is shortened, and the die manufacturing and maintenance cost is also reduced.

Description

Technical Field

[0001] This utility model relates to the field of automotive rear floor production mold technology, and in particular to an automotive rear floor trimming and punching mold. Background Technology

[0002] The stamping process for the rear floor of a car is a crucial step in automobile manufacturing. It involves the combined action of molds and presses to plastically deform a sheet metal into the shape of the rear floor. Subsequent processes include trimming, punching, flanging, shaping, side punching, and side trimming to ensure the final product meets the required standards and guarantees its quality and performance.

[0003] The trimming process primarily removes excess edge material after stamping, resulting in a smoother, more even edge. The punching process involves punching various holes into the rear floor of the vehicle according to design requirements for connection, fixing, or other functional needs. Traditionally, trimming, punching, and other processes are completed using dedicated molds and stamping equipment, leading to long processing times, poor production continuity, and higher equipment investment. Existing technologies offer composite molds for rear floor processing, integrating processes such as flanging and trimming into a single mold for improved efficiency. While existing technologies also provide composite molds for trimming and punching, their complex designs result in high manufacturing and maintenance costs.

[0004] Therefore, improvements to existing technologies are necessary. Utility Model Content

[0005] This utility model provides a trimming and punching die for the rear floor of an automobile to solve the above-mentioned problems.

[0006] One technical solution adopted by this utility model is: to provide a trimming and punching mold for the rear floor of an automobile, including: an upper mold base and a lower mold base;

[0007] The upper pressure plate is set in the upper mold cavity of the upper mold base and is connected to the upper mold base through an elastic mechanism;

[0008] A pair of punching modules are symmetrically arranged on both sides of the upper pressure plate. The top of the punching module is slidably connected to the upper die base. One end has a wedge and the other end is a punch seat with a punching punch.

[0009] Several upper trimming blades are set on the edge of the upper pressure plate according to the trimming position of the rear floor.

[0010] The lower material support structure consists of several material support blocks, each of which is fixedly installed in the lower mold cavity of the lower mold base;

[0011] A pair of punching guide blocks and a pair of punching dies are symmetrically arranged on both sides of the lower material support structure. The punching guide blocks have inclined surfaces, which cooperate with the inclined wedges of the corresponding punching modules to make the punching punch fall into the punching die to complete punching at a certain angle.

[0012] Several lower trimming blades are set at the edge of the lower material support structure, corresponding to each upper trimming blade.

[0013] Furthermore, the wedge side of the punching module is provided with a hook, and the side of the punching guide block is provided with a reset strip. When the mold is opened, the hook part of the hook is subjected to force and retracts along the reset strip, which assists the punching module in retraction.

[0014] Furthermore, a clearance gap is reserved between the two sides of the lower support structure and the lower mold base, and the downward-extending portions of the upper pressure plate fall into the clearance gap when the mold is closed.

[0015] Furthermore, it also includes several coarse positioning components, which are set around the lower support structure for coarse positioning of the outer edge of the rear floor workpiece.

[0016] Furthermore, the coarse positioning component includes a connecting section and a guide section. The connecting section has a waist hole and is connected to the lower mold base by bolts, allowing for front-to-back position adjustment. The guide section has an arc-shaped surface.

[0017] Furthermore, it also includes several precision positioning components, which are set on some of the material support blocks for precision positioning inside the rear floor workpiece.

[0018] Furthermore, guide rods are provided on both sides of the lower mold base, and corresponding guide holes are provided on the upper mold base.

[0019] Furthermore, shock-absorbing components are provided on both sides of the lower mold base at positions higher than the guide rod, and the upper mold base is provided with corresponding contact protrusions.

[0020] Furthermore, the lower die base is provided with several downwardly inclined scrap chutes at both ends. The scrap chutes are divided into primary scrap chutes and secondary scrap chutes. The upper end of the primary scrap chutes extends to below the trimming or punching position and connects with the lower die base. The secondary scrap chutes are located below one or more primary scrap chutes and are used to receive the trimming or punching scrap falling from the primary scrap chutes.

[0021] The beneficial effects of this utility model of a trimming and punching die for automotive rear floor are:

[0022] 1. Integrating the trimming and punching processes into the mold reduces the number of mold changes and workpiece transfers, which shortens the production cycle and reduces the cost of mold manufacturing and maintenance.

[0023] 2. Completing trimming and punching in the same mold can also ensure the positioning accuracy between the two processes, thereby improving the dimensional accuracy and surface quality of the product;

[0024] 3. By optimizing the mold design, the utilization rate of materials has been improved, and the mold has also become more versatile. Attached Figure Description

[0025] Figure 1 This is a perspective view of a car rear floor trimming and punching mold according to the first embodiment of this utility model;

[0026] Figure 2 This is a perspective view of the first embodiment of the present invention, which is a car rear floor trimming and punching mold without the upper mold base;

[0027] Figure 3 This is a perspective view of the first embodiment of the present invention, which is a car rear floor trimming and punching mold without the upper mold base and the upper pressure plate.

[0028] Figure 4 This is a top view of the first embodiment of the present invention, which is a car rear floor trimming and punching mold without the upper mold base and the upper pressure plate;

[0029] Figure 5 This is a schematic diagram of the punching module in the first embodiment of this utility model;

[0030] The components in the attached diagram are labeled as follows: 1. Upper die base, 2. Upper pressure plate, 3. Punching module, 4. Lower die base, 5. Material support block, 6. Punching guide block, 7. Punching die, 8. Coarse positioning component, 9. Product, 31. Wedge, 32. Hook, 33. Punch seat, 41. Guide rod, 42. Shock absorber, 43. Primary scrap chute, 44. Secondary scrap chute, 51. Lower trimming cutter block, 52. Fine positioning component, 61. Reset strip. Detailed Implementation

[0031] The preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings, so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby making a clearer and more definite definition of the scope of protection of the present invention.

[0032] In the description of this utility model, it should be understood that the terms "upper", "lower", "left", "right", "front", "back", "horizontal", "vertical", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and should not indicate or imply that the components or elements referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0033] Please see Figures 1 to 4 The first embodiment of this utility model provides a trimming and punching die for the rear floor of an automobile, comprising:

[0034] Upper mold base 1 and lower mold base 4;

[0035] The upper pressure plate is set in the upper mold cavity of the upper mold base 1 and is connected to the upper mold base 1 through an elastic mechanism;

[0036] A pair of punching modules 3 are symmetrically arranged on both sides of the upper pressure plate. The top of the punching module 3 is slidably connected to the upper die base 1. One end has a wedge 31 and the other end is a punch base 33, which is equipped with a punching punch.

[0037] Several upper trimming blades are set on the edge of the upper pressure plate according to the trimming position of the rear floor.

[0038] The lower material support structure consists of several material support blocks 5, and each material support block 5 is fixedly installed in the lower mold cavity of the lower mold base 4;

[0039] A pair of punching guide blocks 6 and a pair of punching dies 7 are symmetrically arranged on both sides of the lower material support structure. The punching guide blocks 6 have inclined surfaces, which cooperate with the inclined wedges 31 of the corresponding punching module 3 to make the punching punch fall into the punching die 7 to complete punching at a certain angle.

[0040] Several lower trimming blades 51 are set on the edge of the lower material support structure, corresponding to each upper trimming blade.

[0041] Specifically, the wedge 31 of the punching module 3 is provided with a hook 32 on its side, and the punching guide block 6 is provided with a reset strip 61 on its side. When the mold is opened, the hook of the hook 32 is subjected to force and retracts along the reset strip 61, which assists the punching module 3 in retracting.

[0042] To ensure accurate stamping position of product 9, the following settings are also included:

[0043] A clearance is reserved between the two sides of the lower support structure and the lower mold base 4. The downward extension of the upper pressure plate on both sides falls into the clearance when the mold is closed.

[0044] Several coarse positioning components 8 are provided around the lower support structure for coarse positioning of the outer edge of the rear floor workpiece.

[0045] Some of the material support blocks 5 are also provided with a pointed cone-shaped precision positioning element 52, with the tip pointing upwards, for precision positioning inside the rear floor workpiece.

[0046] Specifically, the coarse positioning component 8 includes a connecting section and a guide section. The connecting section has a waist hole and is connected to the lower mold base 4 by bolts, allowing for front and rear position adjustment. The guide section has an arc-shaped surface.

[0047] The upper mold base 1 and the lower mold base 4 are connected by the following guide and shock absorption mechanisms:

[0048] Guide rods 41 are provided on both sides of the lower mold base 4, and corresponding guide holes are provided on the upper mold base 1;

[0049] Shock-absorbing components 42 are provided on both sides of the lower mold base 4 at positions higher than the guide rod 41, and corresponding contact protrusions are provided on the upper mold base 1.

[0050] The mold features scrap grooves at the trimming and punching locations to facilitate the smooth discharge of scrap generated after trimming and punching.

[0051] The lower die base 4 is also provided with several downward-sloping scrap grooves at both ends. The scrap grooves are divided into primary scrap grooves 43 and secondary scrap grooves 44. The upper end of the primary scrap groove 43 extends to the lower part of the trimming or punching position and connects with the lower die base 4. The secondary scrap groove 44 is located below one or more primary scrap grooves 43 and is used to receive the trimming or punching scrap falling from the primary scrap groove 43.

[0052] The beneficial effects of this utility model of a trimming and punching die for automotive rear floor are:

[0053] 1. Integrating the trimming and punching processes into the mold reduces the number of mold changes and workpiece transfers, which shortens the production cycle and reduces the cost of mold manufacturing and maintenance.

[0054] 2. Completing trimming and punching in the same mold can also ensure the positioning accuracy between the two processes, thereby improving the dimensional accuracy and surface quality of the product;

[0055] 3. By optimizing the mold design, the utilization rate of materials has been improved, and the mold has also become more versatile.

[0056] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the description and drawings of this utility model, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A trimming and punching die for a car rear floor, characterized in that, include: Upper mold base and lower mold base; The upper pressure plate is set in the upper mold cavity of the upper mold base and is connected to the upper mold base through an elastic mechanism; A pair of punching modules are symmetrically arranged on both sides of the upper pressure plate. The top of the punching module is slidably connected to the upper die base. One end has a wedge and the other end is a punch seat with a punching punch. Several upper trimming blades are set on the edge of the upper pressure plate according to the trimming position of the rear floor; the lower material support structure is composed of several material support blocks, each of which is fixedly set in the lower mold cavity of the lower mold base; A pair of punching guide blocks and a pair of punching dies are symmetrically arranged on both sides of the lower material support structure. The punching guide blocks have inclined surfaces, which cooperate with the inclined wedges of the corresponding punching modules to make the punching punch fall into the punching die to complete punching at a certain angle. Several lower trimming blades are set at the edge of the lower material support structure, corresponding to each upper trimming blade.

2. The trimming and piercing die for a rear floor panel of an automobile according to claim 1, characterized by The wedge side of the punching module is provided with a hook, and the side of the punching guide block is provided with a reset strip. When the mold is opened, the hook part of the hook is subjected to force and retracts along the reset strip, which assists the punching module in retraction.

3. The trimming and piercing die for a rear floor panel of an automobile according to claim 1, characterized in that, A clearance is reserved between the two sides of the lower support structure and the lower mold base, and the downward-extending parts of the upper pressure plate fall into the clearance when the mold is closed.

4. The trimming and piercing die for a rear floor panel of an automobile according to claim 1, characterized by It also includes several coarse positioning components, which are set around the lower support structure.

5. The trimming and piercing die for a rear floor panel of an automobile according to claim 4, characterized in that, The coarse positioning component includes a connecting section and a guide section. The connecting section has a waist hole and is connected to the lower mold base by bolts, allowing for front and rear position adjustment. The guide section has an arc-shaped surface.

6. The trimming and piercing die for a rear floor panel of an automobile according to claim 4, characterized in that, It also includes several precision positioning components, which are set on some of the material support blocks.

7. The trimming and piercing die for a rear floor panel of an automobile according to claim 1, wherein Guide rods are provided on both sides of the lower mold base, and corresponding guide holes are provided on the upper mold base.

8. The trimming and piercing die for a rear floor panel of an automobile according to claim 7, characterized in that, Shock-absorbing components are also provided on both sides of the lower mold base at positions higher than the guide rod, and corresponding contact protrusions are provided on the upper mold base.

9. The trimming and piercing die for a rear floor panel of an automobile according to any one of claims 1 to 8, characterized in that, The lower die base is also provided with several downward-sloping waste material chutes at both ends. The waste material chutes are divided into primary waste material chutes and secondary waste material chutes. The upper end of the primary waste material chutes extends to the lower part of the trimming position or the punching position and connects with the lower die base. The secondary waste material chutes are located below one or more primary waste material chutes.

Images