TWM586660U - Composite punching and cutting device - Google Patents

Abstract

The present disclosure provides a composite punching and cutting device which is applied to punch and cut a car door frame material. The composite punching and cutting device includes a base, a plurality of die blocks, a plurality of punches and a blade mechanism. The die blocks are configured to carry the car door frame material, and the die blocks are arranged on the base along a bending curve of the car door frame material. Each of the die blocks includes at least one through hole. The punches are coordinated with the through holes, respectively. The blade mechanism is disposed at the base. Each of the punches corresponds to each of to-be-punched portions, and a central line of each punch is aligned with a normal ling of each to-be-punched portion. The blade mechanism corresponds to a to-be-cut portion. A blade of the blade mechanism is located at a first side of the car door frame material. The blade cuts the car door frame material from the first side toward a second side opposite to the first side, and the first side is near the to-be-punched portions. Therefore, the process time can be reduced.

Description

Composite punching device

The present invention relates to a composite punching device, and more particularly, to a composite punching device applied to the manufacture of automobile door frames.

For automobile door frames, generally, a straight metal strip is first shaped by rolling, and then stretched and bent by a bending machine to form a streamlined curved metal strip, and a punching machine is used for punching on the side as required. . After that, the first cutting is performed by a cutting machine, and the curved metal strip is cut to a required length, and then the second cutting is performed to correct the angle of the curved metal strip, and then the bending is performed. Metal strips are welded and assembled.

Since the above processes need to go through different machines, it is easy to cause problems such as labor consumption and increased process time.

In view of this, how to develop a composite device to reduce the process time of automobile door frames has become the goal of related industry efforts.

The present invention provides a composite punching device. Through the configuration of the lower die seat, the punch and the cutter mechanism, the composite punching device can complete the punching and cutting process.

According to an embodiment of the present invention, a composite punching device is provided for punching an automobile door frame material. The automotive door frame material includes a plurality of to-be-punched portions and a to-be-cut portion. The composite-type punching device includes A base, a plurality of lower die holders, a plurality of punches, and a cutter mechanism. The plurality of lower die holders are used to place car door frame materials. The plurality of lower die holders are arranged on the base along a curved arc interval of the car door frame materials. The seat includes at least one perforation, a plurality of punches correspond to the perforations, and a cutter mechanism is disposed on the base. Wherein, when the door frame material of the automobile is placed on the lower die seat, the punches correspond to the parts to be punched, and a center line of each punch overlaps with a normal line of the corresponding part to be punched, and the cutter mechanism corresponds to the to be cut. And a cutter of the cutter mechanism is located on a first side of the door frame material, the cutter advances from the first side and cuts to a second side opposite to the first side, where the first side The side is closer to the portion to be punched than the second side.

As a result, since the center line of each punch overlaps the normal line of the corresponding punching portion, the composite punching device can complete all punchings, and then with the configuration of the cutter mechanism, cutting can be completed, thereby shortening the processing time. . In addition, the method of cutting from the first side to the second side can minimize the amount of deformation of the cut automobile door frame material, which can help improve the yield of subsequent processes.

According to the foregoing multiple embodiments of the composite punching device, a cutting positioning mechanism may be further included, which is arranged on the base and includes two clamping blocks, which are respectively displaceably located on two sides of the cutter, and the two clamps are The block is used to locate the car door frame material. Alternatively, the cutting and positioning mechanism may further include a pivot group, which may be pivoted The ground is arranged on the base, wherein the two clamping blocks are connected to the pivot group, and when the pivot group is pivoted, the two clamping blocks are driven to press against the door frame material. Alternatively, the pivot group may include a penetrating slot, and two clamp blocks are respectively connected to two sides of the penetrating slot, and the penetrating slot corresponds to a cutting knife. Alternatively, the cutting and positioning mechanism may further include a waste guide cover covering the through slot. Alternatively, the cutting positioning mechanism may be located on the second side.

According to the foregoing multiple embodiments of the composite punching device, it may further include a one-end material cutting mechanism, which is disposed at one end of the base. Wherein, when the car door frame material is placed in the composite punching device, the end-material cutting mechanism Corresponds to one end of the door frame material. Alternatively, each punch includes a large diameter section, a small diameter section, and a tapered section, and the tapered section is connected between the large diameter section and the small diameter section.

According to the foregoing multiple embodiments of the composite punching device, it may further include a clamping mechanism, which is disposed on the base and used to locate the door frame material of the automobile. Alternatively, the aforementioned composite punching device may further include a material return mechanism, which is disposed on the base and used to push the door frame material of the car away from the lower die seat.

100‧‧‧ composite punching device

101‧‧‧ base

110‧‧‧Return mechanism

111‧‧‧Pushing

112‧‧‧bearing rod

121, 122, 123‧‧‧ Lower mold base

124, 125, 126‧‧‧ Lower mold base

127‧‧‧ lower rectangular mold base

131, 132, 133‧‧‧ punch

134, 135, 136‧‧‧ punch

137, 138‧‧‧ rectangular punch

1311‧‧‧Large Trail Section

1312‧‧‧ Trail

1313‧‧‧Tapered section

140‧‧‧ cutting and positioning mechanism

141‧‧‧ Pivot Group

1411‧‧‧ Setting Block

1412‧‧‧Swing arm

1413‧‧‧through slot

143‧‧‧ waste guide cover

144‧‧‧Clamp

150‧‧‧tool mechanism

151‧‧‧Cutter

180‧‧‧ initial positioning mechanism

190‧‧‧Clamping mechanism

191‧‧‧cylinder

192‧‧‧ Collet

200‧‧‧ composite punching device

210‧‧‧Returning agency

240‧‧‧ cutting and positioning mechanism

241‧‧‧ Pivot Group

2411‧‧‧ Setting Block

2412‧‧‧Swing arm

2413‧‧‧through slot

243‧‧‧ waste guide cover

251‧‧‧Cutter

260‧‧‧End material cutting mechanism

280‧‧‧ initial positioning mechanism

290‧‧‧Clamping mechanism

300‧‧‧ Composite punching method

310‧‧‧ Placement steps

320‧‧‧Punching steps

330‧‧‧ Cutting and positioning steps

340‧‧‧ cutting steps

C1‧‧‧To be cut

F1‧‧‧Car door frame material

160‧‧‧End material cutting mechanism

171, 172‧‧‧Press block

173‧‧‧Press block

174, 175‧‧‧ cylinder

176, 177‧‧‧ cylinder

H1‧‧‧ Countersink

N1, N2, N3‧‧‧normal

N4, N5, N6‧‧‧ normal

W1, W2, W3‧‧‧‧To be punched

W4, W5, W6 ‧‧‧ to be punched

FIG. 1 is a schematic perspective view of a composite punching device according to an embodiment of the present invention; FIG. 2 is a schematic front view of the composite punching device of FIG. 1; FIG. 3 is a composite view of FIG. Figure 3 is a schematic partial perspective view of the composite punching device; Figure 4 is a schematic partial cross-sectional view of the composite punching device of Figure 3; Figure 5 is a diagram showing a plurality of punches and a car of the composite punching device of Figure 1 Relationship diagram of door frame materials; FIG. 6 is a schematic cross-sectional view of the punch of the composite punching device of FIG. 1 forming a countersink hole in the material of the door frame of the car; FIG. 7 is a view of a cutting blade and the punch of the composite punching device of FIG. 1. Cutting diagram of automobile door frame material; FIG. 8 is a perspective view of a composite punching device according to another embodiment of the present invention; FIG. 9 is a front view of the composite punching device of FIG. 8; Fig. 10 shows a partial perspective view of the composite punching device of Fig. 8; Fig. 11 shows a partial cross-sectional view of the composite punching device of Fig. 10; and Fig. 12 shows another implementation according to the present invention. Example is a flowchart of the steps of a composite punching method.

Embodiments of the present invention will be described below with reference to the drawings. For the sake of clarity, many practical details will be explained in the following description. However, the reader should understand that these practical details should not be applied to limit the new model. That is, in some embodiments of the present invention, these practical details are unnecessary. In addition, in order to simplify the drawings, some conventional structures and components will be shown in the drawings in a simple and schematic manner; and repeated components may be represented by the same number or similar numbers.

In addition, when a component (or mechanism or module, etc.) is "connected", "set" or "coupled" to another component in this document, it can mean that the component is directly connected. Connected, directly set, or directly coupled to another element, can also mean that an element is indirectly connected, indirectly set, or indirectly coupled to another element, which means that there is another element between the element and the other element . And when it is explicitly stated that an element is "directly connected", "directly set" or "directly coupled" to another element, it means that there is no other element between the element and the other element. The terms such as first, second, and third are only used to describe different components or components, and there are no restrictions on the components / components themselves. Therefore, the first component / component can also be renamed as the second component / component. In addition, the combination of components / components / organizations / modules in this article is not a commonly known, conventional or conventional combination in this field. You cannot determine whether the combination relationship is based on whether the components / components / organizations / modules are customary. It is easily done by ordinary people in the technical field.

Please refer to FIG. 1, FIG. 2, FIG. 3, FIG. 4, FIG. 5, FIG. 6 and FIG. 7, wherein FIG. 1 shows a composite punching device 100 according to an embodiment of the present invention. 3 is a schematic front view of the composite punching device 100 of FIG. 1, FIG. 3 is a partial perspective view of the composite punching device 100 of FIG. 1, and FIG. 4 is a view of the third Partial cross-sectional view of the composite punching device 100 shown in the figure, and FIG. 5 shows the plurality of punches 131, 132, 133, 134, 135, 136 of the composite punching device 100 of FIG. 1 and a car door frame material F1. Fig. 6 is a schematic cross-sectional view of the punch 131 of the compound punching device 100 of Fig. 1 forming a countersink hole H1 in the material of the door frame F1 of the car, and Fig. 7 illustrates the compound type of Fig. 1 A schematic diagram of cutting a cutting blade 151 of the punching device 100 and the door frame material F1 of the automobile. Composite punching device 100 is used to punch automotive door frame material F1. A plurality of to-be-punched portions W1, W2, W3, W4, W5, W6 and a to-be-cut portion C1.

The composite punching device 100 includes a base 101, a plurality of lower die seats 121, 122, 123, 124, 125, 126, a plurality of punches 131, 132, 133, 134, 135, 136, and a cutter mechanism 150. The seats 121 to 126 are used to place the car door frame material F1. The lower die seats 121 to 126 are arranged on the base 101 along a curved arc interval of the car door frame material F1. Each of the lower die seats 121 to 126 includes at least one perforation, and the punches 131 to 136. In response to the perforation, the cutter mechanism 150 is disposed on the base 101. Among them, when the automobile door frame material F1 is placed on the lower die seats 121 to 126, the punches 131 to 136 correspond to the parts to be punched W1 to W6, respectively, and a center line of each of the punches 131 to 136 and the corresponding to be punched A normal line N1, N2, N3, N4, N5, N6 of the parts W1 to W6 overlaps, the cutter mechanism 150 corresponds to the portion C1 to be cut, and a cutter 151 of the cutter mechanism 150 is located on a first side of the door frame material F1 On the side, the cutter 151 feeds from the first side and cuts to a second side opposite to the first side, wherein the first side is closer to the portion to be punched W1 to W6 than the second side.

As a result, the center line of each of the punches 131 to 136 overlaps with the normal lines N1 to N6 of the corresponding punching portions W1 to W6, and the composite punching device 100 can complete all punching, and then cooperate with the tool mechanism 150. Configuration can complete cutting, thereby shortening process time. In addition, cutting from the first side to the second side can minimize the amount of deformation of the cut automobile door frame material F1, which can help improve the yield of subsequent processes. Details of the composite punching device 100 will be described in more detail later.

The lower mold bases 121 to 126 can be screwed or welded to the base 101 through a plurality of brackets. In the embodiment of FIG. 1, the lower mold bases 121 to 126 each include a perforation, and the lower mold base 123 can further include a rectangular perforation. However, in other embodiments, a lower mold base may include more than two perforations, or may include perforations of different shapes, which may be configured according to actual needs, and is not limited thereto.

The positions of the punches 131 to 136 correspond to the perforations, and the punches 131 to 136 can be punched on the parts to be punched W1 to W6. Because the punches 131 ~ 136 need to be perpendicular to the parts to be punched W1 ~ W6 when punching, in order to carry out accurate punching, the configuration is to arrange the lower die seats 121 ~ 126 along the curved arc of the door frame material F1. As shown in Fig. 5, the center lines of the punches 131 to 136 and the normal lines N1, N2, N3, N4, N5, and N6 of the corresponding punched portions W1 to W6 overlap, in other words, That is, the punches 131 to 136 are perpendicular to the portions to be punched W1 to W6.

The composite punching device 100 may further include a plurality of oil cylinders 174, 175, 176, and 177 and a plurality of pressure blocks 171, 172, and 173. Actuating the piston rods of the oil cylinders 174 to 177 can press the pressure blocks 171 to 173 into position Car door frame material F1, and the punches 131 ~ 136 are moved toward the perforations of the lower die seats 121 ~ 126 to complete the punching. Since the to-be-punched portions W1 to W3 are adjacent to each other and the normal lines N1 to N3 are parallel to each other, the same cylinder 174 can be used to control the movement of the punches 131 to 133, and because the to-be-punched portions W4 to W6 are normal lines N4 to N6 It is not parallel, so the cylinders 175 to 177 can control the actions of the punches 134, 135, and 136, respectively. In addition, to fit the space, the punches 131 to 133 may correspond to the press block 171, the punch 134 may correspond to the press block 172, and the punches 135, 136 may correspond to the press block 173. But in other embodiments, it may be an oil The cylinder controls one punch separately, and one punch corresponds to one press block, which can be configured according to actual needs, not limited to this.

Preferably, as shown in FIG. 6, the punch 131 may include a large diameter section 1311, a small diameter section 1312, and a tapered section 1313. The tapered section 1313 is connected to the large diameter section 1311 and the small diameter section 1312. At the same time, a countersunk hole H1 can be formed in the portion to be punched W1. The structure of the other punches 132 to 136 is the same as that of the punch 131, and will not be described again.

In this embodiment, as shown in FIG. 4, the composite blanking device 100 may further include a lower rectangular die base 127 and two rectangular punches 137 and 138. The lower rectangular die base 127 is located in the lower die base 122 and the lower die base. Between 123 and including a rectangular perforation, one of the rectangular punches 137 corresponds to the rectangular perforation of the lower rectangular die seat 127, the other rectangular punch 138 corresponds to the rectangular perforation of the lower die base 123, and the actions of the rectangular punches 137 and 138 also Controlled by the oil cylinder 174. In other embodiments, rectangular punches may not be configured, or punches of different shapes may be configured according to actual requirements.

Preferably, each of the lower mold bases 121 to 126 and the lower rectangular mold base 127 includes a surface on which the automobile door frame material F1 is received, and at least part of the surfaces of the lower mold bases 121 to 126 and the lower rectangular mold base 127 are configured to correspond to automobile door frames The shape of the material F1 can be beneficial to the positioning of the automobile door frame material F1, and only a part of each surface can be configured to correspond to the shape of the automobile door frame material F1, which is not limited to the above disclosure.

The cutter 151 is telescopically located between the lower rectangular die seat 127 and the lower die seat 123. Therefore, at least one of the punches 131 and 132 of the punches 131 to 136 is located on one side of the cutter 151, and the punches 131 to 131 ~ Other punches in 136 133 ~ 136 are on the other side of the cutter 151. With this configuration, all the positions on the door frame material F1 that need to be punched can be punched first, and then the car door frame material F1 is divided into two parts by the cutter 151, which is beneficial to shortening the process time.

Preferably, the composite punching device 100 may further include a cutting positioning mechanism 140, which is disposed on the base 101 and includes two clamping blocks 144, which are respectively displaceably located on two sides of the cutting blade 151, and The two clamping blocks 144 are used for positioning the door frame material F1 of the automobile. The cutting and positioning mechanism 140 may further include a pivot group 141 that can be pivotally disposed on the base 101. Among them, two clamp blocks 144 are connected to the pivot group 141. When the pivot group 141 pivots, the two clamps are driven. The block 144 presses against the door frame material F1 of the automobile.

More specifically, the pivot group 141 includes a swing arm 1412 and a setting block 1411. The swing arm 1412 is pivoted on the base 101 and can swing relative to the base 101. The setting block 1411 is locked to the swing arm 1412 and faces the cutter. One side of 151 has a rectangular block structure, and two clamping blocks 144 are screwed to the setting block 1411 at intervals.

As shown in FIG. 4, one of the clamping blocks 144 is located on one side of the cutter 151, and the other clamping block 144 is located on the other side of the cutter 151. Therefore, when the swing arm 1412 is pivoted toward the cutter 151, the clamp The block 144 can press the car door frame material F1 against the lower mold base 123 and the lower rectangular mold base 127. In this way, the car door frame material F1 can be firmly positioned, which can help the stability of the cutter 151 when cutting And accuracy. Preferably, the pivot group 141 may be located on the second side, and the pivot group 141 is pivoted toward the first side, so that the direction of the pressing force of the clamping block 144 is from the second side toward the first side, so that Resistance to cutting power.

The pivot group 141 may further include a through slot 1413, two clamp blocks 144 are respectively connected to two sides of the through slot 1413, and the through slot 1413 corresponds to the cutting blade 151. The cutting positioning mechanism 140 may further include a waste guide cover 143 that covers the through slot 1413. When the cutter 151 is cut from the first side to the second side, it will move in the direction of the through slot 1413. At this time, the cut waste can go out through the through slot 1413 and be guided by the waste guide cover 143. To the waste area. In this embodiment, the through slot 1413 is only located on the setting block 1411, but in other embodiments, the through slot can pass through the setting block and the swing arm, depending on its setting position, and is not limited to the above disclosure.

In the embodiment of FIG. 2, the composite blanking device 100 may further include a one-end material cutting mechanism 160, which is disposed at one end of the base 101. When the automobile door frame material F1 is placed in the composite blanking device 100, The end material cutting mechanism 160 will correspond to one end of the door frame material F1. The end material cutting mechanism 160 may include a one-end knife, and the end material on the end may be cut off through the end knife.

The composite blanking device 100 may further include an initial positioning mechanism 180, and a positioning hole for the door frame material F1 may be preformed. When the vehicle door frame material F1 is placed on the lower die seat 121 to 126, the initial positioning mechanism 180 may be firstly set. The positioning pins pass through the positioning holes to complete the preliminary positioning of the automobile door frame material F1, so that the perforations and punches 131 to 136 correspond to the parts to be punched W1 to W6.

The composite punching device 100 may further include a clamping mechanism 190, which is disposed on the base 101 and used to locate the door frame material F1 of the automobile. The clamping mechanism 190 includes an air cylinder 191 and a collet 192. The air cylinder 191 drives the collet 192 to press the automobile door frame material F1 against the lower mold base 125 to locate the automobile door frame material F1, which can help the subsequent punching process.

The composite blanking device 100 may further include at least one unloading mechanism 110 (including two unloading mechanisms 110 in this embodiment), which is disposed on the base 101 and used to push the door frame material F1 of the automobile from the lower die seats 121 to 126. The unloading mechanism 110 may include a pushing member 111 and a bearing rod 112. The pushing member 111 is driven by an air cylinder. The pushing member 111 can push the door frame material F1 by the first side, so that the door frame material F1 is separated from the lower mold seat. After 121 ~ 126, it is dropped on the bearing rod 112 to complete the return. Preferably, the shape of the pushing member 111 and the shape of the supporting rod 112 are both L-shaped.

Please refer to FIG. 8, FIG. 9, FIG. 10, and FIG. 11, wherein FIG. 8 shows a three-dimensional schematic diagram of a composite punching device 200 according to another embodiment of the present invention, and FIG. 9 shows 8 is a schematic front view of the composite punching device 200, FIG. 10 is a partial perspective view of the composite punching device 200 of FIG. 8, and FIG. 11 is a portion of the composite punching device 200 of FIG. Cutaway schematic. The composite blanking device 200 is similar to the composite blanking device 100. Since the composite blanking device 200 is applied to the rear door, and the composite blanking device 100 is applied to the front door, the corresponding bending direction and punching of the automobile door frame material F1 The positions and numbers of holes are different, so the number and position of the oil cylinder, the lower die seat and the punch are slightly different. The composite punching device 200 also includes two return mechanisms 210, a cutting positioning mechanism 240, and one end cutting mechanism 260. , An initial positioning mechanism 280 and a clamping mechanism 290, the details similar to those of the composite punching device 100 will not be repeated.

In addition, in the composite punching device 200, the penetrating slot 2413 of the pivot group 241 is a penetrating setting block 2411 and a swing arm 2412, and a waste guide cover 243 is directly provided on the swing arm 2412 to cover the penetrating slot 2413. 251 The cutting waste can be discharged through the through slot 2413, and then guided to the waste area by the waste guide cover 243.

Please refer to FIG. 12, and please also refer to FIGS. 1 to 7, wherein FIG. 12 shows a flowchart of steps of a composite punching method 300 according to another embodiment of the present invention. The composite punching method 300 can be applied to the composite punching device 100 and includes a placing step 310, a punching step 320, a cutting positioning step 330, and a cutting step 340.

The placing step 310 is to provide a plurality of lower die holders 121 to 126 and a plurality of punches 131 to 136. Each of the lower die holders 121 to 126 includes at least one perforation. An automobile door frame material F1 is placed on the lower die holders 121 to 126. The perforations are respectively Correspond to the plurality of punched portions W1 ~ W6 of the door frame material F1, and make the punches 131 ~ 136 correspond to the punched portions W1 ~ W6, respectively, and a center line of each punch 131 ~ 136 and the corresponding punched portion A normal line N1 to N6 of W1 to W6 overlaps.

The punching step 320 is to make each of the punches 131 to 136 punch holes corresponding to the punched portions W1 to W6.

The cutting and positioning step 330 is to move a cutting and positioning mechanism 140 to position a to-be-cut portion C1 of the automobile door frame material F1.

The cutting step 340 is to make a cutting blade 151 of a cutter mechanism 150 feed from a first side edge of the door frame material F1 and cut toward the second cutting edge portion C1 opposite to the first side edge. Cut, where the first side is closer to the parts to be punched W1 to W6 than the second side.

More specifically, in the placing step 310, the provided lower mold bases 121 to 126 are arranged on the base 101 along a curved arc interval of the car door frame material F1 in advance, so when the car door frame material F1 is placed on the lower mold base 121 ~ 126 When up, the normal lines N1 to N6 of each to-be-punched portion W1 to W6 will automatically overlap the center lines of the punches 131 to 136. Preferably, the preliminary positioning mechanism 180 can be used for preliminary positioning, which is helpful for the alignment of the punches 131 to 136 and the to-be-punched portions W1 to W6.

In the punching step 320, each of the punches 131 to 136 is sequentially punched to the corresponding punching portions W1 to W6, and each of the oil cylinders 174 to 177 controls each of the pressure blocks 171 to 173 to press against each other. Car door frame material F1, and each of the punches 131 ~ 136 is moved to perform punching. The punching sequence may be, for example, arranged in the order of the oil cylinder 174, the oil cylinder 175, the oil cylinder 176, and the oil cylinder 177, and is not limited thereto, thereby avoiding mutual collision and interference during punching.

In the cutting and positioning step 330, firstly drive the oil cylinders 174 to 177 to control the pressure blocks 171 to 173 and the punches 131 to 136 to retract, and the cutting positioning mechanism 140 can be moved to make the two clamping blocks 144 of the cutting positioning mechanism 140 They are respectively located on two sides of the cutting blade 151 and press against the portion C1 to be cut. Since the cutting and positioning mechanism 140 includes a pivot group 141 and two clamp blocks 144, the pivot group 141 can swing relative to the base 101, so the pivot group 141 is driven to pivot from the second side toward the first side, so that The second clamping block 144 is driven to press against the automobile door frame material F1 on both sides of the cutting blade 151, and finally the cutting step 340 is performed.

Although the new model has been disclosed as above with the examples, it is not intended to limit the new model. Any person skilled in this art can make various changes and retouches without departing from the spirit and scope of the new model. Therefore, the new model is protected. The scope shall be determined by the scope of the attached patent application.

Claims (10)

A composite punching device is used for punching an automobile door frame material. The automotive door frame material includes a plurality of to-be-punched portions and a to-be-cut portion. The composite punching device includes: a base; a plurality of lower die seats, For placing the car door frame material, the lower die seats are arranged on the base along a curved arc interval of the car door frame material, and each of the lower die seats includes at least one perforation; a plurality of punches corresponding to the perforations; and a cutter A mechanism is provided on the base; wherein, when the material of the automobile door frame is placed on the lower die seats, the punches correspond to the parts to be punched, and a centerline of each punch corresponds to A normal line of the portion to be punched overlaps, the cutter mechanism corresponds to the portion to be cut, and a cutter of the cutter mechanism is located on a first side edge of the door frame material of the car, and the cutter advances from the first side edge. The knife cuts towards a second side opposite to the first side, wherein the first side is closer to the punched portions than the second side. The composite punching device described in item 1 of the scope of patent application, further includes: a cutting positioning mechanism provided on the base and including: two clamping blocks, which are respectively displaceably located on two sides of the cutter, and The two clamping blocks are used for positioning the door frame material of the automobile. According to the composite punching device described in item 2 of the scope of patent application, wherein the cutting positioning mechanism further includes: a pivot group, which can be pivotally disposed on the base; wherein, the two clamping blocks are connected to the The pivot group, when the pivot group is pivoted, drives the two clamping blocks to press against and locate the material of the door frame of the automobile. According to the composite punching device described in item 3 of the patent application scope, wherein the pivot group includes a through slot, the two clamping blocks are respectively connected to two sides of the through slot, and the through slot corresponds to a cutter. According to the composite punching device described in item 4 of the scope of patent application, the cutting positioning mechanism further includes: a waste guide cover to cover the through slot. The composite punching device according to item 5 of the scope of patent application, wherein the cutting positioning mechanism is located on the second side. The composite punching device described in item 1 of the patent application scope further includes: a one-end material cutting mechanism provided at one end of the base; wherein, when the material of the automobile door frame is placed in the composite punching device, The end material cutting mechanism corresponds to one end portion of a door frame material of an automobile. The composite punching device described in item 1 of the scope of patent application, wherein each of the punches includes: a large diameter section; a small diameter section; and a tapered section connected between the large diameter section and the small diameter Between paragraphs. The composite punching device described in item 1 of the scope of patent application, further includes: a clamping mechanism, which is disposed on the base and is used for positioning the door frame material of the automobile. The composite blanking device described in item 1 of the scope of the patent application, further includes: a material return mechanism, which is disposed on the base and is used to push the material of the door frame of the car away from the lower die seats.