Drawing die capable of automatically cutting off and discharging waste materials and motor shell drawing equipment

Abstract

The utility model provides a stretching die capable of automatically cutting off and discharging waste and motor shell stretching equipment. The stretching die capable of automatically cutting off and discharging the waste materials comprises an upper die assembly, a lower die assembly, a stretching convex column and a cutting tool, the upper die assembly and the lower die assembly are oppositely arranged, and the stretching convex column is arranged on the lower die assembly in a lifting mode and stretches into a forming inner groove of the upper die assembly; the circumferential wall of the stretching convex column is matched with the circumferential wall of the groove opening of the forming inner groove to form an annular cutting structure; the lower die assembly forms a waste ramp on each of the two sides of the stretching convex column, and the cutting tool is arranged in the middle of the two waste ramps and extends towards the annular cutting structure to form a tool edge. The knife edge protrudes out of the top of the waste ramp. According to the drawing die capable of automatically cutting off and discharging the waste materials, the R-corner waste materials can be cut off while the motor shell is drawn and formed through the annular cutting structure, and when the R-corner waste materials are stacked, the R-corner waste materials can be automatically cut off through the cutting edge of the cutting tool and are automatically discharged through the waste material ramp.

Description

Technical Field

[0001] The present disclosure relates to the technical field of stretching die equipment, and in particular to a stretching die with self-cutting and discharge of waste materials and a motor housing stretching equipment. Background Art

[0002] With the rapid development of the automobile industry, the market demand for automobile motor housings is also increasing. Currently, automobile motor housings are often formed using stretching dies.

[0003] For example, Chinese patent document CN218015234U discloses a motor casing stretching forming die, including an upper die assembly having a stretching die and a lower die assembly having a stretching punch matched with the upper die assembly, the stretching die having an inner cavity for molding the outer surface of a shell to be molded, the stretching punch having a protruding section capable of extending into the inner cavity of the stretching die, the protruding section having a large diameter section matched with the lower half of the inner cavity of the shell to be molded and a necking section connected to the large diameter section and matched with the upper half of the inner cavity of the shell to be molded, and a spacing for molding the wall thickness of the shell between the inner cavity of the stretching die and the protruding section of the stretching punch.

[0004] However, the design of the above-mentioned motor casing stretch forming die has the following problems:

[0005] The above-mentioned motor casing stretching and forming die can quickly stretch and form the motor casing through the stretching punch. After the motor casing is stretched and formed, the tail portion will bend outward to form R-corner waste. In order to meet the production requirements, the R-corner waste needs to be punched. However, since the motor casing stretching and forming die is in continuous operation, the R-corner waste will remain on the lower die assembly. When too much R-corner waste accumulates, it is easy to hinder the subsequent punching process, such as the situation where it is pressed and adhered to the subsequent motor casing to be punched. Utility Model Content

[0006] The purpose of the present invention is to overcome the deficiencies in the prior art and to provide a stretching die and motor housing stretching equipment that can quickly clean up R-corner waste and self-cut off and discharge waste.

[0007] The purpose of this disclosure is achieved through the following technical solutions:

[0008] A stretching die for waste self-cutting and discharge, comprising an upper die assembly, a lower die assembly and a stretching convex column, wherein the upper die assembly is arranged opposite to the lower die assembly, and the stretching convex column is lifted and arranged on the lower die assembly and extends into the forming inner groove of the upper die assembly;

[0009] The stretching die for the waste self-cutting and discharge also includes a cutting tool;

[0010] The peripheral wall of the stretching boss cooperates with the peripheral wall of the groove of the forming inner groove to form a ring cutting structure; the lower mold assembly forms a waste ramp on both sides of the stretching boss respectively, and the cutting tool is arranged in the middle of the two waste ramps, and the cutting edge extends toward the ring cutting structure; the cutting edge protrudes from the top of the waste ramp.

[0011] In one embodiment, the waste ramp extends obliquely from a position close to the knife edge toward the side of the stretching boss.

[0012] In one embodiment, the angle between the waste ramp and the horizontal direction is 20° to 70°.

[0013] In one embodiment, the angle between the waste ramp and the horizontal direction is 30°.

[0014] In one of the embodiments, the number of the cutting tools is two, and the two cutting tools are respectively arranged on both sides of the stretching boss.

[0015] In one embodiment, the knife edge extends from the middle toward each of the waste ramps to form a cutting edge.

[0016] In one of the embodiments, the middle portion of the blade is inclined downward from a side close to the stretching protrusion to a side away from the stretching protrusion to form a center-divided blade.

[0017] In one of the embodiments, a punching needle is provided at the bottom of the inner groove, and the punching needle is connected to the lifting drive of the upper mold assembly.

[0018] In one embodiment, the stretching boss is connected to a lifting drive of the upper mold assembly.

[0019] A motor casing stretching device comprises a stretching die for self-cutting and discharging of waste materials as described in any of the above embodiments.

[0020] Compared with the prior art, the present invention has at least the following advantages:

[0021] 1) By placing the sheet to be stretched on the lower die assembly, since the stretching boss is lifted and arranged on the lower die assembly, the upper die assembly and the lower die assembly are arranged relative to each other, so that the stretching boss can lift the sheet to be stretched, so that the sheet to be stretched is stretched and formed in the forming inner groove of the upper die assembly, and since the peripheral wall of the stretching boss and the peripheral wall of the notch of the forming inner groove cooperate to form a ring cutting structure, the R corner waste at the tail of the motor housing after stretching and forming can be punched through the ring cutting structure, and Because the lower die assembly forms waste ramps on both sides of the stretching boss, the blade of the cutting tool protrudes from the top of the waste ramp, and the R-angle waste after punching will fall down to the top of the waste ramp along the stretching boss and contact the blade. As subsequent R-angle waste gradually accumulates on the top of the waste ramp, the R-angle waste will be cut by the blade. As the subsequent R-angle waste is squeezed, the R-angle waste can fall off the stretching boss and finally be quickly discharged through the waste ramp.

[0022] 2) Compared with the motor casing stretching and forming die of the prior art, the above-mentioned stretching die with self-cutting and discharge of waste can cut off the R-corner waste while stretching and forming the motor casing through the circular cutting structure. When the R-corner waste accumulates, the R-corner waste can be automatically divided by the blade of the cutting tool and automatically discharged through the waste ramp, thereby reducing the accumulation of R-corner waste on the lower die assembly, thereby effectively reducing the situation where the motor casing to be punched subsequently is pressed and adhered to the previous R-corner waste. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions of the embodiments of the present disclosure, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present disclosure and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0024] Figure 1 A lateral view of a stretching die for self-cutting and discharging waste according to an embodiment of the present disclosure;

[0025] Figure 2 for Figure 1 A partial enlarged view shown in the middle A;

[0026] Figure 3 Based Figure 1 A longitudinal view of the drawing die showing the discharge of the waste from the cut-off;

[0027] Figure 4 This is a physical picture of R-corner waste and a motor housing according to an embodiment of the present disclosure.

[0028] Figure numerals: 10, stretching die for self-cutting and discharging of waste; 100, upper die assembly; 110, forming inner groove; 1110, punching needle; 120, ring cutting structure; 200, lower die assembly; 210, waste ramp; 300, stretching boss; 400, cutting tool; 410, knife edge; 4110, cutting blade; 4120, middle cutting blade; 20, motor housing; 201, R-angle waste; 2011, waste fragments. DETAILED DESCRIPTION

[0029] In order to facilitate the understanding of the present disclosure, the present disclosure will be described more fully below with reference to the relevant drawings. The preferred embodiments of the present disclosure are given in the drawings. However, the present disclosure can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present disclosure more thoroughly and comprehensively understood.

[0030] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only and do not represent the only implementation method.

[0031] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present disclosure. The terms used herein in the specification of the present disclosure are only for the purpose of describing specific embodiments and are not intended to limit the present disclosure. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0032] In order to better understand the technical solutions and beneficial effects of the present invention, the present invention is further described in detail below in conjunction with specific embodiments:

[0033] like Figure 1 and Figure 2As shown, a stretching die 10 for self-cutting and discharging waste in one embodiment comprises an upper die assembly 100, a lower die assembly 200, a stretching boss 300 and a cutting tool 400. The upper die assembly 100 is arranged opposite to the lower die assembly 200. The stretching boss 300 is lifted and lowered on the lower die assembly 200 and extends into the inner molding groove 110 of the upper die assembly 100. The peripheral wall of the stretching boss 300 cooperates with the peripheral wall of the notch of the inner molding groove 110 to form a ring cutting structure 120. The lower die assembly 200 forms a waste ramp 210 on both sides of the stretching boss 300, and the cutting tool 400 is arranged in the middle of the two waste ramps 210, and a knife edge 410 extends toward the ring cutting structure 120. The knife edge 410 protrudes from the top of the waste ramp 210.

[0034] It can be understood that by placing the sheet to be stretched on the lower die assembly 200, since the stretching boss 300 is lifted and arranged on the lower die assembly 200, the upper die assembly 100 and the lower die assembly 200 are arranged relative to each other, so that the stretching boss 300 can lift the sheet to be stretched, so that the sheet to be stretched is stretched and formed in the forming inner groove 110 of the upper die assembly 100, and the peripheral wall of the stretching boss 300 cooperates with the peripheral wall of the notch of the forming inner groove 110 to form a ring cutting structure 120, so that the R-shaped waste material 201 at the tail of the motor housing 20 after stretching and forming can be punched through the ring cutting structure 120, and because the lower die assembly 100 is relatively arranged, the stretching boss 300 can lift the sheet to be stretched, so that the sheet to be stretched is stretched and formed in the forming inner groove 110 of the upper die assembly 100. The mold assembly 200 forms waste ramps 210 on both sides of the stretching boss 300, and the blade 410 of the cutting tool 400 protrudes from the top of the waste ramp 210. The R-angle waste 201 after punching will fall downward to the top of the waste ramp 210 while covering the stretching boss 300 and contacting the blade 410. As the subsequent R-angle waste 201 gradually accumulates on the top of the waste ramp 210, the R-angle waste 201 will be cut by the blade 410. As the subsequent R-angle waste 201 is squeezed, the R-angle waste 201 can fall off the stretching boss 300 and finally be quickly discharged through the waste ramp 210.

[0035] It can be understood that compared with the motor casing stretching and forming die of the prior art, the above-mentioned stretching die 10 with self-cutting and discharge of waste can cut off the R-corner waste 201 while stretching and forming the motor casing 20 through the annular cutting structure 120. When the R-corner waste 201 accumulates, the R-corner waste 201 can be automatically divided by the blade 410 of the cutting tool 400 and automatically discharged through the waste ramp 210, thereby reducing the accumulation of R-corner waste 201 on the lower mold assembly 200, thereby effectively reducing the situation where the subsequent motor casing 20 to be punched is pressed and adhered to the previous R-corner waste 201.

[0036] Combination Figure 2 As shown, in one embodiment, the scrap ramp 210 extends obliquely from a position close to the blade 410 to the side of the stretching protrusion 300. It can be understood that since the scrap ramp 210 extends obliquely from a position close to the blade 410 to the side of the stretching protrusion 300, the R-shaped scrap 201 cut off by the blade 410 can roll down along the scrap ramp 210 to the side of the stretching protrusion 300, thereby realizing automatic material discharge.

[0037] Combination Figure 1 As shown, in one embodiment, the angle a between the waste ramp 210 and the horizontal direction is 20° to 70°. It can be understood that by setting the angle a between the waste ramp 210 and the horizontal direction in the range of 20° to 70°, it can not only avoid the slope of the waste ramp 210 being too small, resulting in slow discharge of the R-shaped waste 201 after cutting, but also avoid the slope of the waste ramp 210 being too large, resulting in the waste ramp 210 being difficult to guide the R-shaped waste 201 after cutting, that is, the waste ramp 210 is difficult to guide the R-shaped waste 201 after cutting to be discharged in an orderly manner. Specifically, the angle a between the waste ramp 210 and the horizontal direction is 20°, 45° or 70°, of course, it is not limited here, and those skilled in the art can also make other choices according to needs.

[0038] Combination Figure 1 As shown, in this embodiment, the angle a between the waste ramp 210 and the horizontal direction is 30°. It can be understood that by setting the angle a between the waste ramp 210 and the horizontal direction to 30°, the cut R-shaped waste 201 can be discharged quickly and orderly along the waste ramp 210, thereby avoiding the situation where the cut R-shaped waste 201 accumulates too much and blocks the waste ramp 210.

[0039] Combination Figure 1 and Figure 3 As shown, in one embodiment, the number of the cutting tools 400 is two, and the two cutting tools 400 are respectively arranged on both sides of the stretching boss 300. It can be understood that since the number of the cutting tools 400 is two, by arranging one cutting tool 400 on one side of the stretching boss 300 and arranging another cutting tool 400 on the other side of the stretching boss 300, the R-angle waste 201 can be cut by the two cutting tools 400 to cut off two positions of the R-angle waste 201 respectively, and then the R-angle waste 201 is cut into two waste fragments 2011, and each of the waste fragments 2011 is automatically discharged through the corresponding waste ramp 210.

[0040] Combination Figure 2 and Figure 3As shown, in one embodiment, the blade 410 extends from the middle to each of the waste ramps 210 to form a cutting edge 4110. It can be understood that since the blade 410 extends from the middle to each of the waste ramps 210 to form a cutting edge 4110, when the R-shaped waste 201 is cut off by contact with the middle of the blade 410, each cutting edge 4110 can guide and expand the R-shaped waste 201, thereby allowing the R-shaped waste 201 to fall off the stretching boss 300 more quickly.

[0041] Combination Figure 2 and Figure 3 As shown, in one embodiment, the middle portion of the blade 410 is tilted downward from the side close to the stretching protrusion 300 to the side away from the stretching protrusion 300 to form a middle dividing blade 4120. It can be understood that since the middle dividing blade 4120 is tilted downward from the side close to the stretching protrusion 300 to the side away from the stretching protrusion 300, when the R-shaped waste material 201 contacts the middle dividing blade 4120, it can be spread and cut along the middle dividing blade 4120, so that the R-shaped waste material 201 can be cut more quickly.

[0042] Combination Figure 1 and Figure 3 As shown, in one embodiment, a punching needle 1110 is provided at the bottom of the inner groove 110, and the punching needle 1110 is connected to the lifting drive of the upper mold assembly 100. It can be understood that since the punching needle 1110 is connected to the lifting drive of the upper mold assembly 100, the punching needle 1110 is provided at the bottom of the inner groove 110, so that the punching needle 1110 can punch the motor housing 20 in the inner groove 110 through the push of the lifting drive.

[0043] Combination Figure 1 and Figure 3 As shown, in one embodiment, the stretching boss 300 is connected to the lifting drive of the upper die assembly 100. It can be understood that since the stretching boss 300 is connected to the lifting drive of the upper die assembly 100, the lifting drive can push the stretching boss 300 to move toward the forming inner groove 110 to stretch the sheet to be stretched, or the peripheral wall of the stretching boss 300 cooperates with the peripheral wall of the notch of the forming inner groove 110 to automatically punch the R-shaped waste material 201.

[0044] In one embodiment, the lifting drive and the jacking drive can both be oil cylinders or air cylinders, but this is not limited here and those skilled in the art can also make replacements as needed.

[0045] The present disclosure also provides a motor housing stretching device, including the stretching die 10 for self-cutting and discharging waste of any of the above-mentioned embodiments. It can be understood that by applying the stretching die 10 for self-cutting and discharging waste of the present disclosure to the motor housing stretching device, the R-corner waste 201 can be cut off while stretching and forming the motor housing 20 through the ring cutting structure 120. When the R-corner waste 201 is accumulated, the R-corner waste 201 can be automatically cut by the blade 410 of the cutting tool 400, and automatically discharged through the waste ramp 210, reducing the accumulation of the R-corner waste 201 on the lower die assembly 200, thereby effectively reducing the situation where the motor housing 20 to be punched later is pressed and adhered to the previous R-corner waste 201.

[0046] Compared with the prior art, the present invention has at least the following advantages:

[0047] 1) By placing the sheet to be stretched on the lower die assembly 200, since the stretching boss 300 is lifted and arranged on the lower die assembly 200, the upper die assembly 100 and the lower die assembly 200 are arranged relative to each other, so that the stretching boss 300 can lift the sheet to be stretched, so that the sheet to be stretched is stretched and formed in the forming inner groove 110 of the upper die assembly 100, and the peripheral wall of the stretching boss 300 cooperates with the peripheral wall of the notch of the forming inner groove 110 to form a ring cutting structure 120, so that the R-shaped waste material 201 at the tail of the motor housing 20 after stretching and forming can be punched through the ring cutting structure 120, and because the lower die The component 200 forms waste ramps 210 on both sides of the stretching boss 300, and the blade 410 of the cutting tool 400 protrudes from the top of the waste ramp 210. The R-angle waste 201 after punching will fall downward to the top of the waste ramp 210 while covering the stretching boss 300 and contacting the blade 410. As the subsequent R-angle waste 201 gradually accumulates on the top of the waste ramp 210, the R-angle waste 201 will be cut by the blade 410. As the subsequent R-angle waste 201 is squeezed, the R-angle waste 201 can fall off the stretching boss 300 and finally be quickly discharged through the waste ramp 210.

[0048] 2) Compared with the motor casing stretching and forming die of the prior art, the above-mentioned stretching die 10 with self-cutting and discharge of waste can cut off the R-corner waste 201 while stretching and forming the motor casing 20 through the annular cutting structure 120. When the R-corner waste 201 accumulates, the R-corner waste 201 can be automatically divided by the blade 410 of the cutting tool 400 and automatically discharged through the waste ramp 210, thereby reducing the accumulation of R-corner waste 201 on the lower mold assembly 200, thereby effectively reducing the situation where the motor casing 20 to be punched out later is pressed and adhered to the previous R-corner waste 201.

[0049] The above-mentioned embodiments only express several implementation methods of the present disclosure, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the utility model patent. It should be pointed out that, for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the present disclosure, and these all belong to the protection scope of the present disclosure. Therefore, the protection scope of the patent of the present disclosure shall be based on the attached claims.

Claims

1. A stretching die for waste self-cutting and discharge, comprising an upper die assembly, a lower die assembly and a stretching boss, wherein the upper die assembly is arranged opposite to the lower die assembly, and the stretching boss is lifted and lowered on the lower die assembly and extends into the forming inner groove of the upper die assembly; It is characterized in that The stretching die for the waste self-cutting and discharge also includes a cutting tool; The peripheral wall of the stretching boss cooperates with the peripheral wall of the groove of the forming inner groove to form a ring cutting structure; the lower mold assembly forms a waste ramp on both sides of the stretching boss respectively, and the cutting tool is arranged in the middle of the two waste ramps, and the cutting edge extends toward the ring cutting structure; the cutting edge protrudes from the top of the waste ramp.

2. The waste self-cutting and discharging stretching die according to claim 1, characterized in that: The waste ramp extends obliquely from a position close to the knife edge toward the side of the stretching boss.

3. The stretching die for waste self-cutting and discharge according to claim 2, characterized in that: The angle between the waste ramp and the horizontal direction is 20° to 70°.

4. The waste self-cutting and discharging stretching die according to claim 3, characterized in that: The angle between the waste ramp and the horizontal direction is 30°.

5. The waste self-cutting and discharging stretching die according to claim 1, characterized in that: The number of the cutting tools is two, and the two cutting tools are respectively arranged on both sides of the stretching boss.

6. The stretching die for waste self-cutting and discharge according to claim 1, characterized in that: The knife edge extends from the middle toward each of the waste ramps to form a cutting edge.

7. The waste self-cutting and discharging stretching die according to claim 1, characterized in that: The middle part of the blade is inclined downward from a side close to the stretching protrusion to a side away from the stretching protrusion to form a center-dividing blade.

8. The waste self-cutting and discharging stretching die according to claim 1, characterized in that: A punching needle is provided at the bottom of the inner groove, and the punching needle is connected to the lifting driver of the upper mold assembly.

9. The stretching die for waste self-cutting and discharge according to claim 1, characterized in that: The stretching boss is connected to a lifting driver of the upper die assembly.

10. A motor housing stretching device, characterized in that: A stretching die for self-cutting and discharging waste comprising the waste according to any one of claims 1 to 9.

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