KR20230001607A - Double Trim mold and Double Trim Manufacture Method - Google Patents

Abstract

The present invention relates to double trim mold equipment and a double trim manufacturing method which can reduce process and mold manufacturing costs, secure a straightness of a bush pipe assembly, and achieve a 0% product defect rate and more specifically, to double trim mold equipment for performing a shearing process on upper and lower ends of one end of a product with a hollow interior. The double trim mold equipment comprises: an inner cam part that is moved and mounted inside a space between the upper and lower ends; an inner lower die part that comes in contact with a lower side of the lower end to fix the product and has a lower die blade at an end thereof; and an inner upper die part that descends from an upper side of the upper end to the lower side of the lower end to shear the upper end by the inner cam part and an upper die blade provided at an end thereof, and in succession descends to shear the lower end by the upper die blade and the lower die blade.

Description

Double trim mold and double trim manufacturing method {Double Trim mold and Double Trim Manufacture Method}

The present invention relates to a double trim mold apparatus and a double trim method.

A multi-link type suspension system is a suspension system in which wheels of a vehicle are supported by several links. The ability to properly maintain the wheels for various changes in the road surface is excellent.

And, the lower link means a lower link of the suspension. In a multi-link type suspension, the inner side is connected to a cross member or frame with a bush, and the outer side is connected to a steering knuckle with a ball joint. As a member that plays the role of an arm that controls the movement of a wheel, it is called a control arm and is attached to a body or an axle by a ball rubber bush or the like as a ball joint pillow.

The lower link, which is conventionally produced and applied, consists of three parts, an upper panel, a lower panel, and a pipe. The lower link is produced by overlapping the upper panel and the lower panel, sealing and welding, and then welding the pipe. Here, the pipe is a part for inserting the bush.

In order to combine a part pipe with such a trimmed product, a trim process must be performed on each of the upper and lower ends of the trimmed product.

1 is a perspective view of a product in which the first and second trims have been performed, FIG. 2A is a conventional mold 6 for the first trim process, and FIG. 2B is a conventional mold 7 for the second trim process. Figure 3a is a cross-sectional view schematically showing the shearing work by the upper mold blade and the lower mold blade in the conventional primary trim process, Figure 3b is a schematic cross-sectional view showing the shear work by the upper mold blade and the lower mold blade in the conventional secondary trim process A cross section is shown.

Figure 4a is a cross-sectional view showing overcutting in a conventional primary trim process, Figure 4b is a partial perspective view in which a step is generated by overcutting, and Figure 4c is a side view showing a state in which straightness deformation is generated by bush coupling due to a step it did

In the trim process for the conventional product (1), the upper trim is performed, and then the lower trim is performed (trim 2 process).

As shown in FIG. 3A, the upper side of the product is sheared with the upper and lower trim steels, and separately, as shown in FIG. 3B, the shearing operation is performed on the lower side of the product with the upper and lower trim steels. will proceed

Since the upper and lower trim processes are separated, an overcut of about 0.5mm is performed on the upper side to secure lower trim workability. Therefore, a step difference of about 0.5 mm is generated in the upper and lower trim parts, and thus there is a problem in that defects due to straightness deformation occur during welding of the bush pipe.

Republic of Korea Patent Publication 10-2016-0126178 Korean registered patent 10-1120801 Korean Registered Patent No. 10-1416548

Therefore, the present invention has been made to solve the above conventional problems, and according to an embodiment of the present invention, the cam-in part is moved, the upper mold part is moved downward, and after the first trim by the upper mold part and the cam-in part, the continuous By lowering the upper mold worker and proceeding with the secondary trim by the upper and lower mold workers, it is possible to reduce the process and mold manufacturing cost from the conventional two-step division work to one-step work, and to secure the degree of conversion of the bush pipe assembly part, The purpose is to provide a double trim mold device and a double trim method that can achieve a 0% defect rate.

On the other hand, the technical problems to be achieved in the present invention are not limited to the above-mentioned technical problems, and other technical problems that are not mentioned will become clear to those skilled in the art from the description below. You will be able to understand.

A first object of the present invention is a double trim mold device for performing a shearing process on the upper and lower ends of one end surface of a product having a hollow inside, and is moved and mounted into the space between the upper and lower ends. Cam-in part to be; A lower mold member having a lower mold blade at an end and fixing the product by being in contact with the lower side of the lower end; And it descends from the upper side of the upper end to the lower side of the lower end, has an upper mold blade at an end, shears the upper end by the cam-in part and the upper mold blade, and descends continuously to the upper mold blade and the lower mold blade. It can be achieved as a double trim mold apparatus comprising a; upper mold member for shearing the lower end.

And it may be characterized in that it includes a scrap take-out device provided in the cam-in unit to take out the scrap generated by shearing the upper end by the upper mold member to the outside of the product.

In addition, the cam-in unit includes an upper seating end that is in surface contact with the lower surface of the upper end and a lower seating end that is bent downward and connected to the rear of the upper seating end so that the lower surface is in surface contact with the upper surface of the lower part. The take-out device is hinged to one side of the lower surface of the upper seating end and is composed of an arc-shaped cross section having an inclined surface, so that the scrap generated by the shearing of the upper end is taken out to the outside of the product along the inclined surface, After shearing the upper end, The scrap take-out device may be rotated based on the hinge by the lowering of the upper mold member.

A second object of the present invention is to move the cam-in part into the space between the upper and lower ends in the double trim industry for performing a shearing process on each of the upper and lower ends of one end surface for a product having a hollow inside, setting the product by bringing the lower mold member into contact with the lower side of the lower end; The upper mold member is lowered and the upper end is sheared by the cam-in part and the upper mold blade of the upper mold member; It can be achieved as a double trimming method comprising the;

And after the step of shearing the upper end, it may be characterized in that it further comprises the step of taking out the scrap generated by shearing the upper end by the upper molder to the outside of the product by a scrap take-out device provided in the cam-in unit.

According to the double trim mold device and the double trim method according to an embodiment of the present invention, the cam-in part is moved, the upper mold part is moved downward, and after the first trimming by the upper mold part and the cam-in part, the upper mold part is continuously lowered, By proceeding with the second trim by the lower mold worker, it is possible to reduce the process and mold manufacturing cost from the conventional two-step division work to one-step work, and to secure a straightness of the bush pipe assembly part, thereby achieving a product defect rate of 0% have an effect

On the other hand, the effects obtainable in the present invention are not limited to the effects mentioned above, and other effects not mentioned will be clearly understood by those skilled in the art from the description below. You will be able to.

The following drawings attached to this specification illustrate preferred embodiments of the present invention, and together with the detailed description of the invention serve to further understand the technical idea of the present invention, the present invention is limited only to those described in the drawings. and should not be interpreted.
1 is a perspective view of a product in which the first and second trims have been performed;
Figure 2a is a mold for a conventional primary trim process,
Figure 2b shows a mold for a conventional secondary trim process.
Figure 3a is a cross-sectional view schematically showing a shearing operation by an upper mold blade and a lower mold blade in a conventional primary trim process;
Figure 3b is a cross-sectional view schematically showing a shearing operation by an upper mold blade and a lower mold blade in a conventional secondary trim process;
4a is a cross-sectional view showing overcutting in a conventional primary trim process;
4B is a partial perspective view in which a step is generated by overcutting;
Figure 4c is a side view of a state in which straightness deformation is generated by coupling the bush pipe by a step;
5 is a flowchart of a double trim method according to an embodiment of the present invention;
6 is a plan view in the double trim method according to an embodiment of the present invention;
7 is a cross-sectional side view of a double trim mold apparatus according to an embodiment of the present invention;
8 is an enlarged cross-sectional view of a cam-in part of a double trim mold apparatus according to an embodiment of the present invention.

The above objects, other objects, features and advantages of the present invention will be easily understood through the following preferred embodiments in conjunction with the accompanying drawings. However, the present invention is not limited to the embodiments described herein and may be embodied in other forms. Rather, the embodiments introduced herein are provided so that the disclosed content will be thorough and complete and the spirit of the present invention will be sufficiently conveyed to those skilled in the art.

In this specification, when an element is referred to as being on another element, it means that it may be directly formed on the other element or a third element may be interposed therebetween. Also, in the drawings, the thickness of components is exaggerated for effective description of technical content.

Embodiments described in this specification will be described with reference to cross-sectional views and/or plan views, which are ideal exemplary views of the present invention. In the drawings, the thicknesses of films and regions are exaggerated for effective explanation of technical content. Accordingly, the shape of the illustrated drawings may be modified due to manufacturing techniques and/or tolerances. Therefore, embodiments of the present invention are not limited to the specific shape shown, but also include changes in the shape generated according to the manufacturing process. For example, a region shown at right angles may be rounded or have a predetermined curvature. Accordingly, the regions illustrated in the drawings have attributes, and the shapes of the regions illustrated in the drawings are intended to illustrate a specific shape of a region of a device and are not intended to limit the scope of the invention. Although terms such as first and second are used to describe various elements in various embodiments of the present specification, these elements should not be limited by these terms. These terms are only used to distinguish one component from another. Embodiments described and illustrated herein also include complementary embodiments thereof.

Terminology used herein is for describing the embodiments and is not intended to limit the present invention. In this specification, singular forms also include plural forms unless specifically stated otherwise in a phrase. The terms 'comprises' and/or 'comprising' used in the specification do not exclude the presence or addition of one or more other elements.

In describing the specific embodiments below, several specific contents are prepared to more specifically describe the invention and aid understanding. However, readers who have knowledge in this field to the extent that they can understand the present invention can recognize that it can be used without these various specific details. In some cases, it is mentioned in advance that parts that are commonly known in describing the invention and are not greatly related to the invention are not described in order to prevent confusion for no particular reason in explaining the present invention.

Hereinafter, a double-trim mold apparatus and a double-trim method of the mold apparatus according to an embodiment of the present invention will be described.

First, FIG. 5 shows a flow chart of a double trim method according to an embodiment of the present invention. Figure 6 is a plan view in the double trim method according to an embodiment of the present invention, Figure 7 is a cross-sectional side view of a double trim mold apparatus according to an embodiment of the present invention, Figure 8 is a double trim mold apparatus according to an embodiment of the present invention It shows an enlarged cross-sectional view of the cam-in part of.

According to the double trim mold device and the double trim method according to an embodiment of the present invention, the cam-in part 10 is moved, and the upper mold part 40 is moved downward to perform the first step by the upper mold part 40 and the cam-in part 10. After the trim, the upper mold member 40 is continuously lowered to perform the secondary trim by the upper and lower mold workers, thereby reducing the process and mold manufacturing cost from the conventional two-step division work to one-step work, and the bush pipe assembly part By securing the degree of straightness, it is possible to achieve a product defect rate of 0%.

The double trim mold apparatus according to an embodiment of the present invention is for performing a shearing process on each of the upper end (1-1) and the lower end (1-2) of one end surface for a product (1) having a hollow inside. As such, it may be configured to include a cam-in part 10, a lower mold part 30, an upper mold part 40, a PAD 50, and the like.

The cam-in part 10 is configured to be moved and seated in the space between the upper end 1-1 and the lower end 1-2 of one end surface of the product 1 to be processed.

As shown in FIG. 6, the upper end seating end 12 is moved into the open surface of the product 1 and is in surface contact with the lower surface of the upper end of the product 1-1, as shown in FIG. It can be seen that the upper seating end 12 includes a lower seating end 11 that is bent downward to the rear and the lower surface is in surface contact with the upper surface of the upper and lower ends, and has an L-shaped cross-sectional shape as a whole. In addition, a cam-in part blade is provided at the front end of the upper seating end 12.

Also, as will be described later, the cam-in part 10 is provided with a scrap take-out device 20 so that the scrap 9 generated by shearing the upper end 1-1 by the upper die 40 is transferred to the outside of the product 1. It is configured to take out as.

The scrap take-out device 20 is hinged to one side of the lower surface of the seating end 12 of the upper end of the cam-in part 10 and is composed of an arc-shaped cross section having an inclined surface 21. This arc shape may have an angle of about 40 to 140 degrees. Therefore, the scrap 9 generated by the shearing of the upper end 1-1 is taken out to the outside of the product 1 along the inclined surface 21, and after the shearing of the upper end 1-1, the upper mold member 40 is lowered. As a result, the scrap take-out device 20 is rotated to the inside of the cam-in part 10 based on the hinge.

As shown in FIG. 7 , the lower mold part 30 contacts the lower side of the lower part 1-2 to fix the product 1, and it can be seen that the lower mold blade 31 is provided at the front end. In addition, the PAD 50 is configured to fix the product 1 by being in contact with the upper side of the upper end 1-1. Therefore, the upper end (1-1) of the product (1) is between the PAD (50) and the upper end seating end (12) of the cam-in part (10), and the lower end (1-2) is the lower end seating end (11) of the cam-in part (10). ) And it is interposed between the lower mold part 30.

The upper mold part 40 is configured to descend from the upper side of the upper part 1-1 to the lower side of the lower part 1-2, and has an upper mold blade 41 at the rear end of the lower part, so that the cam-in part 10 and It is configured to shear the upper part 1-1 by the upper mold blade 41 and continuously descend to shear the lower part 1-2 by the upper mold blade 41 and the lower mold blade 31.

Hereinafter, the double trim method using the aforementioned double trim mold device will be described.

This double trim method is to continuously perform a shearing process on each of the upper end (1-1) and the lower end (1-2) of one end surface of the product (1) having a hollow inside, first the product ( 1) to set.

That is, the cam-in part 10 is moved into the space between the upper part 1-1 and the lower part 1-2 (S1), the lower mold part 30 is brought into contact with the lower part 1-2, and PAD (50) is brought into contact with the upper side of the upper end (1-1) to set the product (1) (S2).

Then, the upper mold part 40 is lowered (S3), and the upper part 1-1 is sheared by the cam-in part 10 and the upper mold blade 41 of the upper mold part 40 (S4, first trim).

In addition, the scrap 9 generated by shearing the upper end 1-1 by the upper mold member 40 is taken out to the outside of the product 1 by the scrap take-out device 20 provided in the cam-in unit 10 ( S5).

As shown in FIG. 8, the scrap take-out device 20 is hinged to one side of the lower surface of the upper end seating end 12 of the cam-in part 10 and has an arc-shaped cross section with an inclined surface 21. Therefore, the scrap 9 generated by shearing the upper end 1-1 is taken out of the product 1 along the inclined surface 21.

And after the strap is taken out, the upper mold member 40 is continuously lowered, and at this time, after the upper end 1-1 is sheared, the scrap take-out device 20 is hinged by the lowering of the upper mold member 40 The cam-in part 10 is rotated inside (S6).

Then, the upper mold blade 40 is continuously lowered, and the lower edge 1-2 is sheared by the upper mold blade 41 and the lower mold blade 31 of the lower mold blade 30 (S7, secondary trim).

Then, the upper mold part 40 is raised, and the cam-in part 10 is moved to its original position (S8).

In addition, the device and method described above are not limited to the configuration and method of the above-described embodiments, but all or part of each embodiment is selectively combined so that various modifications can be made. may be configured.

1: Product
1-1: upper part
1-2: lower part
Mold for 6:1 car trim process
Mold for 7:2 car trim process
8: Bushpipe
9:Scrap
10: cam part
11: lower seating end
12: upper part seating end
20: scrap take-out device
21: slope
30: lower mold worker
31: Lower mold blade
40: Sanghyeong Workers
41: Sanghyeong blade
50:PAD

Claims (5)

In the double trim mold device for performing a shearing process on each of the upper and lower ends of one end surface for a product having a hollow inside,
a cam-in unit moved and mounted into the space between the upper and lower ends;
A lower mold member having a lower mold blade at an end and fixing the product by being in contact with the lower side of the lower end; and
It descends from the upper side of the upper end to the lower side of the lower end, has an upper mold blade at the end, shears the upper end by the cam-in part and the upper mold blade, and continuously descends to the lower edge by the upper mold blade and the lower mold blade. Double trim mold apparatus comprising a; upper mold for shearing.
According to claim 1,
and a scrap take-out device provided in the cam-in unit and taking out scrap generated by shearing the upper end by the upper mold member to the outside of the product.
According to claim 2,
The cam-in part includes an upper seating end that comes into surface contact with the lower surface of the upper end and a lower seating end that is bent downward and connected to the rear of the upper seating end so that its lower surface makes surface contact with the upper surface of the lower part,
The scrap take-out device is hinged to one side of the lower surface of the upper seating end and is composed of an arc-shaped cross section having an inclined surface, so that scrap generated by the shear of the upper end is taken out to the outside of the product along the inclined surface, and the shear of the upper end Then, the double trim mold device, characterized in that the scrap take-out device is rotated relative to the hinge by the lowering of the upper mold member.
In the double trimming industry for performing a shearing process on each of the upper and lower ends of one end surface for a product having a hollow inside,
Moving the cam-in part into the space between the upper end and the lower end, and setting the product by bringing the lower mold-in part into contact with the lower side of the lower end;
The upper mold member is lowered and the upper end is sheared by the cam-in part and the upper mold blade of the upper mold member; and
The double trim method comprising the step of continuously lowering the upper mold member and shearing the lower end by the upper mold blade and the lower mold blade of the lower mold blade.
According to claim 4,
After the step of shearing the upper end,
The double trim method further comprising taking out the scrap generated by shearing the upper end by the upper molder to the outside of the product by a scrap take-out device provided in the cam-in part.

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