CN218079946U - Thick material flanging mechanism - Google Patents

Abstract

The utility model discloses a thick material flanging mechanism, include: the lower die unit comprises a bearing platform capable of placing a blank and a lower die forming block adjacent to the bearing platform; a first cutting unit comprising a first cutting head facing the load-bearing platform; the first punching unit comprises first punching parts corresponding to two ends of the body so as to form positioning holes at the two ends of the body; the upper die unit comprises an upper die base, a positioning part and a flanging punch, a pressing platform parallel to the upper end face of the lower die forming block is arranged at one end, close to the lower die unit, of the upper die base, the positioning part is fixedly connected to the upper die base, and the flanging punch penetrates through the upper die base. The utility model discloses guarantee that the protruding portion turn-ups height of body both sides is the same when the turn-ups.

Description

Thick material flanging mechanism

Technical Field

The utility model relates to a stamping forming field, specificly a thick material flanging mechanism.

Background

Flanging refers to a method for forming a straight wall or a flange with a certain angle along a closed or unclosed curve edge on a plane part or a curved part of a blank by using the action of a die. Flanging is one of the stamping processes. As shown in fig. 1, in the flanging mechanism in the prior art, when flanging, a blank needs to be cut first, the blank is cut to the edge, a body and protruding portions located at two sides of the body are formed, and then the protruding portions are flanged by using a punch. At present, the flanging effect of the mechanism is better under the condition that the blank is thinner, but when the thickness of the blank is larger, the problem of different flanging heights at two sides can occur during flanging forming.

SUMMERY OF THE UTILITY MODEL

In order to overcome the defects in the prior art, the inventor stands the angle of the technical staff in the field to further limit the shape of the punch on both sides and the pressure, so that the influence factors of the protruding parts on both sides of the body in the flanging process are kept the same, but the problem can not be solved after the effort. After many experiments, the inventor creatively finds that the following three conditions can cause the problem: 1. the oil playing a lubricating role on the blank can cause the whole blank to skid in the flanging process, so that the position of the whole blank is changed, and the stress position of the two protruding parts is changed. 2. Because both the protruding parts of the two bodies are connected with the bodies and have high degree of association, the swing of one of the two protruding parts can influence the other protruding part in the flanging process, and then the positions of the bodies and the protruding parts are changed, so that the stress positions of the two protruding parts are changed. 3. The two punches are difficult to ensure that the contact time of the two punches is completely the same as that of the two protruding parts, and the sequence of flanging can lead the whole blank to deviate, so that the stress positions of the two protruding parts are changed. The inventors have summarized the above-mentioned problems, and it is considered that fixing the position of the blank during the burring and enhancing the stability of the body structure can effectively solve the above-mentioned problems.

The embodiment of the utility model provides a thick material flanging mechanism, it is used for solving above-mentioned when blank thickness is great, can appear the high different problem of both sides turn-ups when the turn-ups shaping.

The embodiment of the application discloses: the utility model provides a thick material turn-ups mechanism, includes: the lower die unit comprises a bearing platform capable of placing a blank and a lower die forming block adjacent to the bearing platform; the first cutting unit is positioned above the bearing platform and comprises a first cutting head facing the bearing platform, the projections of the first cutting head perpendicular to the extension direction of the blank are positioned in the blank, the blank can be cut by the first cutting head, so that the blank is cut into a body, a protruding part protruding out of the body and a hollow part positioned around the protruding part, and the hollow part is closed and has the same shape as the first cutting head in the cross section perpendicular to the extension direction of the body; the first punching unit is positioned above the bearing platform and comprises first punching parts corresponding to two ends of the body so as to form positioning holes at the two ends of the body; the upper die unit comprises an upper die base, a positioning portion and a flanging punch, the upper die base is close to one end of the lower die unit and is provided with a pressing platform parallel to the upper end face of the lower die forming block, the positioning portion is fixedly connected to the upper die base, the positioning portion faces the lower die forming block to extend, the cross section of the positioning portion in the direction perpendicular to the extending direction of the positioning portion is the same as that of the positioning hole, the flanging punch penetrates through the upper die base, and the flanging punch faces the body and is arranged in the position of the protruding portion when the lower die forming block extends.

Further, a second punching unit and a fixing part are included; the second punching unit is positioned above the bearing platform and comprises a second punching part, and the second punching part corresponds to a connecting part between the end parts of two adjacent bodies close to the edge of the blank, so that a fixing hole can be formed in the connecting part; the fixing part is fixedly connected to the upper die base, and extends towards the position of the fixing hole when the body is arranged on the lower die forming block.

Further, a second cutting unit is included, the second cutting unit including a second cutting head corresponding to a middle portion of the two body edges, such that the second cutting head can remove a connection portion between the two bodies along the body edges.

Further, the first cutting head is in a dumbbell shape with a narrow middle position and wide two ends, the middle position corresponds to one end, far away from the body, of the protruding part, and the two ends correspond to the edge of the body and the side wall of the protruding part.

Further, the thickness of the blank ranges from 2.5mm to 6.5mm.

Further, the thickness of the blank ranges from 5.5mm to 6.0mm.

Further, the ratio of the diameter of the first punching part to the width of the body is between 0.5 and 0.7.

The utility model has the advantages as follows:

1. the blank after being cut is continuous in the whole structure by closing the hollow parts, so that after the first cutting unit is cut, the whole strength between adjacent bodies is higher than that when the bodies are cut and separated, namely, a mutual locking state between the adjacent bodies is realized, deviation of one body during flanging is avoided, and the bodies in the subsequent flanging process can have better stability. In addition, the positioning hole is fixed by the positioning part, so that the positioning hole and the positioning part are prevented from being displaced in a direction perpendicular to the extending direction of the positioning part, and the blank is pressed on the lower die unit, so that the positioning hole can be prevented from being displaced in the extending direction of the positioning part, the blank can be positioned on the lower die unit, and the effect of preventing the blank from being relative to the lower die unit can be achieved. The height of the flange of the protruding part on two sides of the body is the same when the flange is turned by the two effects.

2. The fixing part can be driven to extend into the fixing hole in the process that the upper die base moves towards the fixing part, so that the position between the two bodies is fixed on the lower die unit. Therefore, the blank is further fixed by the fixing part extending into the fixing hole, and the fixing effect on the blank is improved.

3. Make connecting portion can make adjacent body have better stability at the turn-ups in-process, here simultaneously, also make can fix whole blank through the fixed orifices, then will connecting portion get rid of after the turn-ups, avoid the existence of connecting portion to influence the product shape to obtain the product of expectation.

In order to make the aforementioned and other objects, features and advantages of the present invention comprehensible, preferred embodiments accompanied with figures are described in detail below.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

FIG. 1 is a schematic view of the structure relationship between a body and a protrusion formed by a flanging mechanism in the prior art;

FIG. 2 is a schematic structural diagram of a blank and a lower film unit in an embodiment of the present invention;

fig. 3 is a schematic view of the structural relationship between the body and the protrusion formed in the embodiment of the present invention;

FIG. 4 is a schematic structural view of a thick material flanging mechanism in the embodiment of the present invention;

reference numbers to the above figures: 1. a lower die unit; 11. a load-bearing platform; 12. a lower die forming block; 2. an upper die unit; 21. an upper die holder; 22. a flanging punch; 3. a blank; 31. a body; 32. a protrusion; 33. a hollowed-out portion; 4. positioning holes; 5. a connecting portion; 6. and (7) fixing holes.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts all belong to the protection scope of the present invention.

As shown in fig. 2 to 4, the thick material flanging mechanism of the embodiment includes:

the die comprises a lower die unit 1, wherein the lower die unit 1 comprises a bearing platform 11 capable of placing a blank 3 and a lower die forming block 12 adjacent to the bearing platform 11, the bearing platform 11 can be used for cutting and punching the blank 3, and the lower die forming block 12 can enable the blank 3 placed on the lower die forming block to be flanged.

The first cutting unit can be located above the bearing platform 11, the first cutting unit can include a first cutting head facing the bearing platform 11, a projection of the first cutting head perpendicular to the extending direction of the blank 3 can be located inside the blank 3, the first cutting head can cut the blank 3, so that the blank 3 is cut to form a body 31, a protruding portion 32 protruding from the body 31 and a hollow portion 33 located around the protruding portion 32, the hollow portion 33 is closed and has the same cross-sectional shape perpendicular to the extending direction as the first cutting head, any position of the hollow portion 33 can be isolated from the edge of the blank 3, and therefore after the blank 3 is cut by the first cutting head, the overall structure of the blank 3 is continuous, and therefore after the first cutting unit cuts the blank, the overall strength between adjacent bodies 31 is higher than that when the blanks are cut and separated, and therefore the bodies 31 in a subsequent flanging process can have better stability.

The first punching unit is located above the bearing platform 11, and the first punching unit includes first punching portions corresponding to two ends of the body 31 to form positioning holes 4 at two ends of the body 31, the positioning holes 4 can enable the body 31 to achieve a positioning effect through the positioning holes 4, and the positioning holes 4 can be arranged at two ends of the body 31, and an acting force during positioning can be dispersed at two ends of the body 31, so that the body 31 can have a better positioning effect.

The upper die unit 2 comprises an upper die base 21, a positioning part and a flanging punch 22, one end of the upper die base 21 close to the lower die unit 1 can be provided with a pressing platform parallel to the upper end face of the lower die forming block 12, and therefore the pressing platform can press the body 31 onto the lower die forming block 12. The positioning portion may be fixedly connected to the upper die holder 21, the positioning portion may extend toward the lower die forming block 12, a cross-sectional shape of the positioning portion perpendicular to an extending direction of the positioning portion is the same as a shape of the positioning hole 4, so as to fix the body 31 on the lower die unit 1, the positioning hole 4 is fixed by the positioning portion, and displacement perpendicular to the extending direction of the positioning portion between the positioning hole 4 and the positioning portion is avoided, and the blank 3 is pressed on the lower die forming block 12 by the pressing platform, displacement of the positioning hole 4 along the extending direction of the positioning portion is avoided, so that the blank 3 is positioned on the lower die unit 1, and an effect of avoiding the blank 3 from being relative to the lower die unit 1 is achieved. The flanging punch 22 penetrates through the upper die holder 21, the position of the protrusion 32 extends when the flanging punch 22 faces the body 31 and is arranged on the lower die forming block 12, and the flanging punch 22 can move relative to the upper die holder 21 in the extending direction of the flanging punch 22, so that the protrusion 32 can be flanged by the flanging punch 22 after the blank 3 is pressed by the upper die holder 21. Namely, the two flanging punches 22 corresponding to the protruding parts 32 on the two sides of the body 31 are used for flanging the protruding parts 32, the two flanging punches 22 may both have the punching surfaces capable of flanging the protruding parts 32, the two flanging punches 22 with the same shape and size are used for flanging the two protruding parts 32, and finally the flanging heights of the protruding parts 32 on the two sides of the body 31 are the same.

In this embodiment, a blank 3 is placed on the bearing platform 11, and the blank 3 is cut by using a first cutting unit, so that the blank 3 is cut to form a body 31, a protruding portion 32 protruding from the body 31, and a hollow portion 33 located around the protruding portion 32, where the hollow portion 33 is closed. Then, the first punching unit is used for punching positioning holes 4 on two ends of the body 31. The blank 3 is then moved to the position of the lower mold block 12 so that the body 31 is placed on the lower mold block 12 and the projections 32 are located at the positions of both sides of the lower mold block 12. Then, the upper die holder 21 drives the positioning portion and the flanging punch 22 to move towards the blank 3, so that the upper die holder 21 presses the body 31 on the lower die forming block 12, and the positioning portion extends into the positioning hole 4, thereby positioning the blank 3 on the lower die unit 1, and achieving the effect of preventing the blank 3 from generating relative to the lower die unit 1. Then, the two flanging punches 22 are used for flanging the protruding parts 32 on the two sides of the body 31, and in the process, the shapes of the two flanging punches 22 and the pressure on the corresponding protruding parts 32 are the same, so that the flanging heights of the protruding parts 32 on the two sides of the body 31 are finally the same.

By means of the structure, the cut blank 3 is continuous in overall structure by closing the hollow part 33, so that after the first cutting unit is cut, the overall strength between the adjacent bodies 31 is higher than that during cutting and separating, namely, a state of mutual locking between the adjacent bodies 31 is realized, deviation of one body 31 during flanging is avoided, and the bodies 31 in the subsequent flanging process can have better stability. In addition, the positioning portion fixes the positioning hole 4, so that the positioning hole 4 and the positioning portion are prevented from being displaced in a direction perpendicular to an extending direction of the positioning portion, and the blank 3 is pressed against the lower die unit 1, so that the positioning hole 4 is prevented from being displaced in the extending direction of the positioning portion, the blank 3 is positioned on the lower die unit 1, and the blank 3 is prevented from being displaced relative to the lower die unit 1. The two effects jointly ensure that the flanging heights of the protruding parts 32 on the two sides of the body 31 are the same during flanging.

Specifically, a second punching unit and a fixing portion may be included. The second perforating unit, which may be located above the carrying platform 11, may comprise a second perforating portion corresponding to the connecting portion 5 between two adjacent ends of the body 31 adjacent to the edge of the blank 3, so as to make it possible to open a fixing hole 6 in the connecting portion 5. The fixing portion may be fixedly connected to the upper die base 21, and the fixing portion extends toward a position where the fixing hole 6 is located when the body 31 is placed on the lower die forming block 12. So that the fixing part can be driven to extend into the fixing hole 6 in the process that the upper die holder 21 moves towards the fixing part, so as to fix the middle position of the two bodies 31 on the lower die unit 1. Thereby, the fixing part extends into the fixing hole 6 to further fix the blank 3, thereby improving the fixing effect of the blank 3

Specifically, a second cutting unit may be included that includes a second cutting head corresponding to a middle portion of the edges of the two bodies 31 so that the second cutting head can remove the connection 5 between the two bodies 31 along the edges of the bodies 31. Thereby separating the ends of two adjacent bodies 31 so that the final product can be formed. Even if the connecting part 5 can enable the adjacent bodies 31 to have better stability in the flanging process, the whole blank 3 can be fixed through the fixing hole 6, and then the connecting part 5 is removed after flanging, so that the influence of the existence of the connecting part 5 on the shape of a product is avoided, and the expected product is obtained.

Specifically, the first cutting head is in a dumbbell shape with a narrow middle position and two wide ends, the middle position corresponds to one end of the protruding part 32 far away from the body 31, and the two ends correspond to the edge of the body 31 and the side walls of the protruding part 32. Therefore, the side wall of the protruding part 32 can be isolated from the body 31, so that the connecting position between the protruding part 32 and the body 31 is less, and the protruding part 32 can have a better flanging effect in the subsequent flanging process.

Specifically, the thickness of the blank 3 may range from 2.5mm to 6.5mm. When the thickness of the blank 3 is too small, the stress of each part on the whole blank 3 is small, so that the flanging effect is stable, and the effect that the flanging heights of the protruding parts 32 on the two sides of the body 31 are the same can be realized by using a traditional method. When the thickness of the blank 3 is too large, the flanging operation cannot be completed. Repeated tests of the inventor prove that the flanging effect is most ideal when the thickness of the blank 3 ranges from 5.5mm to 6.0mm.

Specifically, the ratio of the diameter of the first punching part to the width of the body 31 is between 0.5 and 0.7. Within the size range, the positioning hole 4 has high strength, and the positioning hole 4 and the positioning part have a better fixing effect on the whole blank 3 after being matched for use.

The principle and the implementation mode of the utility model are explained by applying the specific embodiment, and the explanation of the above embodiment is only used for helping to understand the method and the core idea of the utility model; meanwhile, for the general technical personnel in the field, according to the idea of the present invention, there are changes in the specific implementation and application scope, to sum up, the content of the present specification should not be understood as the limitation of the present invention.

Claims (7)

1. The utility model provides a thick material turn-ups mechanism which characterized in that includes:

the lower die unit comprises a bearing platform capable of placing a blank and a lower die forming block adjacent to the bearing platform;

the first cutting unit is positioned above the bearing platform and comprises a first cutting head facing the bearing platform, the projections of the first cutting head perpendicular to the extension direction of the blank are positioned in the blank, the blank can be cut by the first cutting head, so that the blank is cut into a body, a protruding part protruding out of the body and a hollow part positioned around the protruding part, and the hollow part is closed and has the same shape as the first cutting head in the cross section perpendicular to the extension direction of the body;

the first punching unit is positioned above the bearing platform and comprises first punching parts corresponding to two ends of the body so as to form positioning holes at the two ends of the body;

the upper die unit comprises an upper die base, a positioning part and a flanging punch, wherein a pressing platform parallel to the upper end face of the lower die forming block is arranged at one end of the upper die base close to the lower die unit, the positioning part is fixedly connected to the upper die base and faces the lower die forming block to extend, the cross section of the positioning part in the direction perpendicular to the extending direction of the positioning part is the same as that of the positioning hole, the flanging punch penetrates through the upper die base, and the flanging punch faces the body and is arranged at the position of the protruding part when the lower die forming block is arranged.

2. The thick stock flanging mechanism according to claim 1, which is characterized by comprising a second punching unit and a fixing part;

the second punching unit is positioned above the bearing platform and comprises a second punching part, and the second punching part corresponds to a connecting part between the end parts of two adjacent bodies close to the edge of the blank, so that a fixing hole can be formed in the connecting part;

the fixing part is fixedly connected to the upper die base, and extends towards the position of the fixing hole when the body is arranged on the lower die forming block.

3. The thick stock flanging mechanism of claim 2, comprising a second cutting unit including a second cutting head corresponding to a middle portion of the two body edges, so that the second cutting head can remove a connection between the two bodies along the body edges.

4. The thick material flanging mechanism of claim 1, wherein the first cutting head is shaped like a dumbbell with a narrow middle position and wide two ends, the middle position corresponds to one end of the protruding portion far away from the body, and the two ends correspond to the edge of the body and the side wall of the protruding portion.

5. The thick stock flanging mechanism of claim 1, wherein the thickness of the stock ranges from 2.5mm to 6.5mm.

6. The thick stock flanging mechanism according to claim 5, wherein the thickness of the stock ranges from 5.5mm to 6.0mm.

7. The thick stock flanging mechanism according to claim 1, wherein the ratio of the diameter of the first punching portion to the width of the body is 0.5-0.7.

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