A process method and mold for improving the surface quality of the top cover antenna hole position

Abstract

The present invention discloses a process method and a mold for improving the surface quality of the top cover antenna hole position, belonging to the field of mold technology. The process method includes drawing and upward shaping processes. The drawing process forms a drawn part without an antenna hole mounting surface, and the upward shaping process is used to complete the forming of the antenna hole mounting surface. The process method adopts the method of not forming the antenna hole mounting surface during the first-order drawing and forming process to ensure the smoothness of the sheet material at this position and avoid uneven material feeding during the forming process; in the third-order shaping process, an upward shaping process for the antenna hole mounting surface is added. The process method can effectively solve the problem that the drawn surface quality of the top cover antenna hole position is difficult to eliminate, so that defects are generated and solved in the later order, defects are easier to solve, risks are smaller, and debugging costs are lower.

Description

Technical Field

[0001] The invention belongs to the technical field of molds, and in particular relates to a process method for improving the surface quality of a top cover antenna hole position and a mold thereof. Background Art

[0002] As cars are generally popular in China, various car manufacturers have launched cars of various sizes and types. The top cover outer panel is particularly important in the car models, and has a strict matching relationship with the rear cover, side panels and other major components. In order to achieve the styling characteristics of the top cover outer panel and ensure the forming quality of the product during the forming process of each process of the stamping die, it is necessary to study the formability of the top cover outer panel's appearance ridges and surface quality, make breakthroughs in the stamping process, and realize the shape characteristics of the product.

[0003] In the existing stamping process of automobile cover parts, drawing forming is an indispensable process. For cover parts, due to the arched structure with high middle and low ends, the high middle part will be formed first and the low ends will be formed later during the drawing process. The antenna hole is in the tail area. After the upper and lower molds in the middle area of ​​the top cover are contacted and formed first, the upper and lower molds at the tail antenna hole position will contact again, which will affect the A surface that has been formed near the antenna hole, causing surface defects on the A surface in the nearby area. For outer panel parts, A surface defects are definitely not allowed to appear on the product.

[0004] Therefore, the existing top cover outer panel antenna hole mounting surface is directly formed in the drawing process, which will cause surface quality problems in the antenna hole mounting surface accessories. This is the number one "chronic disease" in the surface quality problems of the top cover parts. The reason is that the antenna hole mounting surface boss is surrounded by uneven material flow during the forming process, resulting in serious surface quality problems that affect the quality of the part. Due to the reasons for the defects, such defects cannot be eliminated and can only be optimized as much as possible through strong pressure coloring. Summary of the invention

[0005] In view of the problems existing in the prior art, such as uneven material flow during the forming process of the sheet metal, which leads to serious surface quality problems and thus affects the quality of the product, the purpose of the present invention is to provide a process method and a mold for improving the surface quality of the top cover antenna hole position. The process method adopts the method of not forming the antenna hole mounting surface during the first sequence of drawing and forming to ensure the smoothness of the sheet metal at this position and avoid uneven material flow during the forming process; in the third sequence of shaping process, a shaping process of the antenna hole mounting surface upward is added. The process method can effectively solve the problem that the surface quality of the top cover antenna hole position is difficult to eliminate, so that the defects are generated and solved in the later sequence, the defects are easier to solve, the risks are smaller, and the debugging costs are lower.

[0006] The present invention is achieved through the following technical solutions:

[0007] In the first aspect, the present invention provides a process method for improving the surface quality of the top cover antenna hole position, the process method includes a drawing forming and an upward shaping process, the drawing forming process forms a drawn part without an antenna hole mounting surface, and the upward shaping process is used to complete the forming of the antenna hole mounting surface.

[0008] Furthermore, the process for improving the surface quality of the top cover antenna hole position is as follows:

[0009] S1: The flat sheet is formed into a drawn part without an antenna hole mounting surface under the action of the drawing upper concave die and the drawing lower punch;

[0010] S2: By driving the inclined wedge, the shaping punch insert installed on the working inclined wedge is driven into place, and the antenna hole mounting surface of the sheet metal is formed by the combined action of the die insert installed on the upper pressing plate.

[0011] Furthermore, the step S1 specifically includes the following contents:

[0012] When the mold is working, the flat plate is placed on the pressing ring, and the upper drawing die is installed on the upper drawing die body. Under the action of the press slide, it moves downward simultaneously with the upper drawing die body. The upper drawing die contacts the pressing ring to form drawing ribs and control the flow of the sheet material. When it reaches the bottom dead point, the upper drawing die and the lower drawing punch form a drawn part that does not contain the antenna hole mounting surface boss.

[0013] Furthermore, the step S2 specifically includes the following contents:

[0014] The workpiece from the previous process is placed on the lower punch, and the workpiece is precisely positioned through the locating pin. The upper pressing plate moves downward with the upper die body, and the die insert and adjusting gasket are installed on the upper pressing plate through screws. After the upper pressing plate contacts the sheet, it reaches the lower dead center, and the upper die body continues to move downward. The air cushion on the press provides pressing force for the upper pressing plate through the upper hitting rod. After the stroke of the upper pressing plate is released, the dead pad installed on the upper pressing plate contacts the upper die body to ensure the rigidity of the upper pressing plate. The workpiece pressing process is completed, and the driving wedge starts to work. The shaping punch insert is installed on the working wedge and moves upward along the direction of the wedge under the action of the driving wedge. When the die insert moves downward with the upper die body to the bottom of the mold, the shaping punch insert and the die insert form the antenna hole mounting surface in place, and the wedge shaping work is completed.

[0015] Furthermore, in the step S2, the antenna hole forming height can be adjusted by means of an adjustment gasket provided between the upper pressing plate and the die insert.

[0016] In the second aspect, the present invention provides a drawing die for a process method for improving the surface quality of the top cover antenna hole position, comprising a drawing lower punch 1, a drawing lower die body 2, a drawing upper die body 3, a drawing upper die 4 and a pressure ring 5; the drawing upper die 4 is installed on the drawing upper die body 3, the drawing lower punch 1 is installed on the drawing lower die body 2, and the pressure ring 5 moves in the lower die body 2 through guide elements and limiting elements, and is used to place flat material; the drawing upper die 4 cooperates with the drawing lower punch 1 to form a drawn part that does not include an antenna hole mounting surface boss.

[0017] In the third aspect, the present invention also provides an upward shaping mold for a process method for improving the surface quality of the top cover antenna hole position, comprising an upper mold body 6, a lower mold body 7, an upper pressure plate 8, a lower punch 9, an upper hitting rod 10, a working wedge 11, a die insert 12, a shaping punch insert 14, a driving wedge 15, an adjustment gasket 16 and a pier dead pad 17; wherein, the upper pressure plate 8 is installed on the upper mold body 6, the lower punch 9 is installed on the lower mold body 7, the die insert 12, the adjustment gasket 16 and the pier dead pad 17 are all installed on the upper pressure plate 8 by screws, the upper hitting rod 10 is installed on the upper pressure plate 8, the shaping punch insert 14 is installed on the working wedge 11, and the working wedge 11 moves in the lower mold body 7 under the action of the guide element and the driving wedge 15; the driving wedge 15 is located below the working wedge 11, and through the action of the upper base plate, the working wedge 11 is driven to move in the reverse direction of the stamping direction.

[0018] Furthermore, the upward shaping mold also includes a positioning pin 13 for providing precise positioning and fixation for the workpiece.

[0019] Compared with the prior art, the advantages of the present invention are as follows:

[0020] 1. The process method of the present invention adopts drawing of the non-formed antenna hole mounting surface, which can effectively reduce the content of drawing work, reduce the amount of on-site debugging and matching, and improve the quality of the drawing die and drawn parts;

[0021] 2. The antenna hole mounting surface is formed upward in the later stage, which is conducive to the size adjustment of this position, and the size can be adjusted in the shaping process;

[0022] 3. The post-process upward forming of the antenna hole mounting surface is beneficial to the optimization of the surface quality problem at this position, while avoiding rectification delays and significantly reducing rectification costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following is a brief introduction to the drawings required for the specific embodiments or the description of the prior art. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn according to the actual scale.

[0024] Figure 1 It is a schematic flow chart of a process method for improving the position and surface quality of the top cover antenna hole of the present invention;

[0025] Figure 2 This is the structural section of the drawing die used in the present invention;

[0026] Figure 3 This is the structural section of the upward shaping die used in the present invention;

[0027] Among them: a lower drawing punch 1, a lower drawing die body 2, an upper drawing die body 3, an upper drawing die 4, and a pressing ring 5;

[0028] The upper die body 6, the lower die body 7, the upper pressure plate 8, the lower punch 9, the upper hitting rod 10, the working wedge 11, the die insert 12, the positioning pin 13, the shaping punch insert 14, the driving wedge 15, the adjustment gasket 16, and the pier dead gasket 17. DETAILED DESCRIPTION

[0029] In order to clearly and completely describe the technical solution and its specific working process of the present invention, the specific implementation methods of the present invention are as follows in conjunction with the accompanying drawings of the specification:

[0030] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0031] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0032] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0033] Example 1

[0034] The present embodiment provides a process method for improving the surface quality of the top cover antenna hole position, the process method includes a drawing forming and an upward shaping process, the drawing forming process forms a drawn part without an antenna hole mounting surface, and the upward shaping process is used to complete the forming of the antenna hole mounting surface.

[0035] Example 2

[0036] like Figure 1 FIG. 1 is a flow chart of a process method for improving the surface quality of the top cover antenna hole position in this embodiment, and the specific process is as follows:

[0037] S1: The flat sheet is formed into a drawn part without an antenna hole mounting surface under the action of the drawing upper die and the drawing lower punch; specifically, the following contents are included:

[0038] When the mold is working, the flat sheet is placed on the pressing ring 5, and the upper drawing die 4 is installed on the upper drawing die body 3. Under the action of the press slide, it moves downward simultaneously with the upper drawing die body 3. The upper drawing die 4 contacts the pressing ring 5 to form a draw rib and control the flow of the sheet. When it reaches the bottom dead point, the upper drawing die 4 and the lower drawing punch 1 form a drawn part that does not include the antenna hole mounting surface boss.

[0039] S2: By driving the wedge, the shaping punch insert installed on the working wedge is driven into place, and the antenna hole installation surface of the sheet metal is formed by the combined action of the die insert installed on the upper press plate; specifically, the following contents are included:

[0040] The workpiece of the previous process is placed on the lower punch 9, and the workpiece is precisely positioned by the locating pin 13. The upper pressure plate 8 moves downward with the upper die body 6, and the die insert 12 and the adjusting gasket 16 are installed on the upper pressure plate 8 by screws. After the upper pressure plate 8 contacts the sheet, it reaches the lower dead center, and the upper die body 6 continues to move downward. The air cushion on the press provides a pressing force for the upper pressure plate 8 through the upper hitting rod 10. When the upper pressure plate 8 is released after the stroke, the dead pad 17 installed on the upper pressure plate 8 contacts with the upper die body 6 to ensure the rigidity of the upper pressure plate 8. The workpiece pressing process is completed, and the driving wedge 15 starts to work. The shaping punch insert 14 is installed on the working wedge 11, and moves upward along the wedge direction under the action of the driving wedge 15. When the die insert moves downward with the upper die body 6 to the bottom of the mold, the shaping punch insert 14 and the die insert 12 form the antenna hole mounting surface in place, and the wedge shaping work is completed.

[0041] In the step S2, the antenna hole forming height can be adjusted by an adjusting gasket provided between the upper pressing plate and the die insert.

[0042] Example 3

[0043] like Figure 2 As shown, it is a structural schematic diagram of a drawing die provided in the present embodiment for a process method for improving the surface quality of the top cover antenna hole position, comprising a drawing lower punch 1, a drawing lower die body 2, a drawing upper die body 3, a drawing upper concave die 4 and a pressing ring 5; the drawing upper concave die 4 is installed on the drawing upper die body 3, the drawing lower punch 1 is installed on the drawing lower die body 2, and the pressing ring 5 is located in the lower die body 2 for placing a flat plate; the drawing upper concave die 4 cooperates with the drawing lower punch 1 to form a drawn part that does not include a boss on the antenna hole mounting surface.

[0044] Example 4

[0045] like Figure 3 As shown, it is a structural schematic diagram of an upward shaping mold of a process method for improving the surface quality of the top cover antenna hole position provided by the present embodiment, including an upper mold body 6, a lower mold body 7, an upper pressure plate 8, a lower punch 9, an upper hitting rod 10, a working wedge 11, a die insert 12, a shaping punch insert 14, a driving wedge 15, an adjustment gasket 16 and a pier dead pad 17; wherein, the upper pressure plate 8 is installed on the upper mold body 6, the lower punch 9 is installed on the lower mold body 7, the die insert 12, the adjustment gasket 16 and the pier dead pad 17 are all installed on the upper pressure plate 8 by screws, the upper hitting rod 10 is installed on the upper pressure plate 8, the shaping punch insert 14 is installed on the working wedge 11, and the working wedge 11 moves in the lower mold body 7 under the action of the guide element and the driving wedge 15; the driving wedge 15 is located below the working wedge 11, and through the action of the upper base plate, the working wedge 11 is driven to move in the reverse direction of the stamping direction.

[0046] The upward shaping mold also includes a positioning pin 13 for providing precise positioning and fixation of the workpiece.

[0047] In summary, this process method completes the forming of the antenna hole of the top cover outer panel through two processes of drawing and upward shaping, so as to improve the surface quality problem of the top cover antenna hole position; this process method can reduce the work content of the drawing die, reduce the amount of on-site debugging and matching, and improve the quality of the drawing die and drawn parts; at the same time, by adding subsequent upward shaping, the size rectification and surface quality rectification means of the antenna hole position part are optimized, further reducing the debugging cost.

[0048] The preferred embodiments of the present invention are described in detail above in conjunction with the accompanying drawings. However, the present invention is not limited to the specific details in the above embodiments. Within the technical concept of the present invention, a variety of simple modifications can be made to the technical solution of the present invention, and these simple modifications all belong to the protection scope of the present invention.

[0049] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, the present invention will not further describe various possible combinations.

[0050] In addition, various embodiments of the present invention may be arbitrarily combined, and as long as they do not violate the concept of the present invention, they should also be regarded as the contents disclosed by the present invention.

Claims

1. A process for improving the surface quality of the top cover antenna hole position, characterized in that: The process method includes a drawing forming process and an upward shaping process, wherein the drawing forming process forms a drawn part without an antenna hole mounting surface, and the upward shaping process is used to complete the forming of the antenna hole mounting surface; The process of improving the surface quality of the top cover antenna hole position is as follows: Step S1: The flat sheet is formed into a drawn part without an antenna hole mounting surface under the action of an upper drawing die and a lower drawing die; Step S2: by driving the inclined wedge, the shaping convex die insert installed on the working inclined wedge is driven into place, and the antenna hole mounting surface of the sheet material is formed by the combined action of the concave die insert installed on the upper press plate; The step S1 specifically includes the following contents: When the die is working, the flat sheet is placed on the blanking ring, the upper drawing die is installed on the upper drawing die body, and moves downward simultaneously with the upper drawing die body under the action of the press slide, the upper drawing die contacts the blanking ring, forms the draw ribs, controls the flow of the sheet, and when it reaches the bottom dead point, the upper drawing die and the lower drawing die form a drawn part that does not include the antenna hole mounting surface boss; The step S2 specifically includes the following contents: The workpiece of the upper process is placed on the lower punch, and the workpiece is precisely positioned by the locating pin. The upper pressing plate moves downward with the upper die body, and the die insert and the adjusting gasket are installed on the upper pressing plate by screws. After the upper pressing plate contacts the sheet, it reaches the lower dead center, and the upper die body continues to move downward. The air cushion on the press provides pressing force for the upper pressing plate through the upper hitting rod. When the stroke of the upper pressing plate is released, the dead pad installed on the upper pressing plate contacts the upper die body to ensure the rigidity of the upper pressing plate. The workpiece pressing process is completed, and the driving wedge starts to work. The shaping punch insert is installed on the working wedge and moves upward along the wedge direction under the action of the driving wedge. When the die insert moves downward with the upper die body to the bottom of the mold, the shaping punch insert and the die insert form the antenna hole mounting surface in place, and the wedge shaping work is completed. In the step S2, the antenna hole forming height can be adjusted by an adjusting gasket provided between the upper pressing plate and the die insert.

2. A drawing die using the process method for improving the surface quality of the top cover antenna hole position as claimed in claim 1, characterized in that: The invention comprises a drawing lower punch (1), a drawing lower die body (2), a drawing upper die body (3), a drawing upper die (4) and a pressing ring (5); the drawing upper die (4) is mounted on the drawing upper die body (3), the drawing lower punch (1) is mounted on the drawing lower die body (2), and the pressing ring (5) moves in the drawing lower die body (2) through a guide element and a limit element, and is used to place a flat plate; the drawing upper die (4) cooperates with the drawing lower punch (1) to form a drawn part that does not include a boss on the antenna hole mounting surface.

3. An upward shaping die using the process method for improving the surface quality of the top cover antenna hole position as claimed in claim 1, characterized in that: The invention comprises an upper die body (6), a lower die body (7), an upper pressure plate (8), a lower punch (9), an upper driving rod (10), a working wedge (11), a die insert (12), a shaping punch insert (14), a driving wedge (15), an adjusting gasket (16) and a pier pad (17); wherein the upper pressure plate (8) is mounted on the upper die body (6), the lower punch (9) is mounted on the lower die body (7), the die insert (12), the adjusting gasket (16) and The pier dead pad (17) is mounted on the upper pressing plate (8) by screws, the upper hitting rod (10) is mounted on the upper pressing plate (8), and the shaping punch insert (14) is mounted on the working inclined wedge (11). The working inclined wedge (11) moves in the lower die body (7) under the action of the guide element and the driving inclined wedge (15); the driving inclined wedge (15) is located below the working inclined wedge (11) and drives the working inclined wedge (11) to move in the reverse direction of the stamping direction through the action of the upper bottom plate.

4. An upward shaping die using the process method for improving the surface quality of the top cover antenna hole position as claimed in claim 1, characterized in that: The upward shaping die also includes a positioning pin (13) for providing precise positioning and fixation for the workpiece.

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