End flanging die

Abstract

The present application provides an end flanging mold, comprising: a workbench, a mounting seat installed on the workbench, a pressing part and a feeding part; the workpiece is placed on the workbench along a first direction; the pressing part is installed on the mounting seat; the pressing part is configured to move along a second direction toward the workpiece and press the workpiece; the forming part is installed on the mounting seat; the forming part in a closed state is configured to move along the first direction toward the workpiece and fold the flanging surface of the workpiece to obtain a pre-flanging of the workpiece; the forming part in an expanded state is also configured to move along a third direction and a fourth direction respectively, and fold the pre-flanging of the workpiece to obtain a flanging of the workpiece.

Description

Technical Field

[0001] The present application relates to the technical field of automobile parts, and in particular to an end flanging die. Background Art

[0002] Roll-forming technology is increasingly being used in the automotive manufacturing industry. Since roll-forming can only produce parts with a specific cross-sectional shape, and the ends of commonly used automotive longitudinal beams need to mate and connect with other parts, traditional structures often design two separate end parts, one of which is welded to the longitudinal beam and the other end connected to other parts. However, this connection method increases the number of parts, the corresponding number of molds, and reduces the strength of the longitudinal beam structure.

[0003] Currently, integrated end flanges are typically formed in cold stamping using a press and die. This typically requires a separate die design for each part. Given the minimal forming force required for flange forming and the relatively simple process, designing a separate die set for each part would be costly and result in a significant waste of resources. Summary of the Invention

[0004] Based on this, it is necessary to provide an end flanging die to address the problems of complex end flanging die equipment, low production efficiency and high production cost.

[0005] On one hand, the present application provides an end flanging die, comprising:

[0006] a workbench on which a workpiece is placed along a first direction; wherein the first direction is configured as a longitudinal extension direction of the workpiece;

[0007] A mounting base, mounted on the workbench;

[0008] a material pressing portion mounted on the mounting seat; the material pressing portion is configured to move in a second direction toward the workpiece and press the workpiece; wherein the second direction is configured to be a direction perpendicular to the plane of the first direction; and

[0009] A forming portion is mounted on the mounting seat; the forming portion in a closed state is configured to move along the first direction toward the workpiece, and fold the flange surface of the workpiece to obtain a pre-flanged edge of the workpiece; the forming portion in an expanded state is also configured to move along a third direction and a fourth direction respectively, and fold the pre-flanged edge of the workpiece to obtain a flange of the workpiece; wherein the third direction is configured as a direction having an angle with the first direction; and the fourth direction is configured as a direction symmetrical to the third direction relative to the first direction.

[0010] In one embodiment, the pressing portion includes:

[0011] a punch, mounted on the mounting seat;

[0012] A press cylinder is mounted on the mounting base; two press cylinders are respectively arranged on both sides of the workpiece;

[0013] A connecting plate, both ends of which are connected to the output ends of the two pressing cylinders; and a die, which is mounted on the connecting plate and is arranged opposite to the punch.

[0014] In one embodiment, the pressing part further includes:

[0015] A guide rod, wherein the first end of the guide rod is mounted on the mounting seat, and the second end of the guide rod is connected to the connecting plate; the central axis of the guide rod is arranged along the second direction.

[0016] In one embodiment, the forming portion comprises:

[0017] a forming drive assembly mounted on the mounting seat;

[0018] a first guide plate, mounted on the forming drive assembly along the first direction, and the first guide plate is slidably connected to the mounting seat;

[0019] The second guide plate has an L-shaped structure;

[0020] Two forming slides, each mounting the second guide plate; a first connecting section of the second guide plate is slidably connected to the output end of the forming drive assembly, and a second connecting section of the second guide plate is slidably connected to the mounting seat; wherein the second connecting sections of the two second guide plates are respectively arranged along the third direction and the fourth direction, and the first connecting section of the second guide plate is arranged along the fifth direction; wherein the fifth direction is configured to be perpendicular to both the first direction and the second direction;

[0021] a first elastic member, the first elastic member being arranged along the fifth direction and installed between the two forming slides;

[0022] a third guide plate, mounted on opposite sides of the two forming sliders along the first direction, and the third guide plate is slidably connected to the mounting seat; and

[0023] A flanging insert is mounted on the forming slider; the two flanging inserts are symmetrically arranged relative to the first direction, and the opposite sides of the two flanging inserts are in contact with the flanging surface of the workpiece respectively;

[0024] When the forming drive assembly moves along the first guide plate, the forming slider is in a closed state, and the two flanging inserts fold the flanging surface of the workpiece to obtain the pre-flanging of the workpiece; when the forming slider moves along the second guide plate, the forming slider is in an open state, and the two flanging inserts move along the third direction and the fourth direction respectively with the two forming sliders and fold the pre-flanging of the workpiece to obtain the flanging of the workpiece.

[0025] In one embodiment, the forming drive assembly includes:

[0026] a forming cylinder mounted on the mounting seat; and

[0027] A driving slider, one end of which is connected to the output end of the forming cylinder; the first guide plate is installed on both sides of the driving slider along the first direction; and the first connecting section of the second guide plate is slidably connected to the end of the driving slider away from the forming cylinder.

[0028] In one embodiment, the forming portion further comprises:

[0029] a limiting block, mounted on the mounting seat; and

[0030] The second elastic member is respectively installed on the opposite side of the two forming slide blocks; the forming portion moves along the first direction close to the flanging surface of the workpiece until the second elastic member abuts against the limit block.

[0031] In one embodiment, it further includes:

[0032] A stopper is installed along the second direction on a side of the mounting base that is opposite to the workbench.

[0033] In one embodiment, the angle between the flange of the workpiece and the side wall of the workpiece is 45 to 180 degrees.

[0034] In one embodiment, the workpiece is in any one of an X-shape and a U-shape.

[0035] In one embodiment, the invention is characterized in that it further comprises:

[0036] A support block is installed on the workbench and arranged between the workpiece and the workbench; wherein a plurality of the support blocks are evenly distributed along the first direction.

[0037] The end flanging die provided in this application has a simple structure and is safe and convenient to operate. There is no need to design a formal die for each part separately. It is only necessary to replace and adjust the components in the pressing part and the forming part that directly act on the workpiece according to the change of the cross-sectional shape of the workpiece, which is conducive to reducing production costs and improving production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] Figure 1 A schematic structural diagram of an end flanging die provided in one embodiment of the present application is shown.

[0039] Figure 2 Shown Figure 1 Schematic diagram of the working status when the local structure under the middle die is processed to pre-flanged the workpiece.

[0040] Figure 3 Shown Figure 1 Schematic diagram of the working status of the local structure under the middle die before flanging the workpiece.

[0041] Figure 4 Shown Figure 1 Schematic diagram of the working state of the local structure under the middle die completing the flanging of the workpiece.

[0042] Figure 5 A schematic diagram showing the changes of the workpiece before and after flanging is shown.

[0043] Figure 6 Shown Figure 1 Schematic diagram of the structure of the middle flange insert.

[0044] Figure Number:

[0045] 100-workpiece;

[0046] 101-Flanging surface of the workpiece before flanging;

[0047] 102-Flanged surface of the workpiece after flanging;

[0048] 201-Workbench;

[0049] 202-guide rod;

[0050] 203-pressing cylinder;

[0051] 204-connecting plate;

[0052] 205- second elastic member;

[0053] 206-first elastic member;

[0054] 207-forming slider;

[0055] 208-driving slider;

[0056] 209-mounting seat;

[0057] 210-forming cylinder;

[0058] 211-block;

[0059] 212-first guide plate;

[0060] 213-second guide plate;

[0061] 214-third guide plate;

[0062] 215-limiting block;

[0063] 301-support block;

[0064] 302-die;

[0065] 303-punch;

[0066] 304-Flanged insert;

[0067] 305-first working surface of the flanging insert;

[0068] 306-The second working surface of the flanging insert. DETAILED DESCRIPTION

[0069] To make the above-mentioned objects, features, and advantages of the present application more clearly understood, the specific embodiments of the present application are described in detail below with reference to the accompanying drawings. The following description sets forth many specific details to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways than those described herein, and those skilled in the art can make similar improvements without violating the scope of the present application. Therefore, the present application is not limited to the specific embodiments disclosed below.

[0070] In the description of this application, it should be understood that if the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. appear, the orientation or position relationship indicated by these terms is based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing this application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this application.

[0071] In addition, if the terms "first" or "second" appear, these terms are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of technical features indicated. Therefore, a feature specified as "first" or "second" may explicitly or implicitly include at least one of such features. In the description of this application, if the term "plurality" appears, "plurality" means at least two, for example, two, three, etc., unless otherwise specifically defined.

[0072] In this application, unless otherwise specified or limited, the terms "mounted," "connected," "connected," "fixed," etc., should be interpreted broadly. For example, these terms may refer to fixed connections, removable connections, or integration; mechanical connections or electrical connections; direct connections or indirect connections through an intermediary; and internal communication between two components or interaction between two components, unless otherwise specified. Those skilled in the art will understand the specific meanings of these terms in this application based on the specific circumstances.

[0073] In this application, unless otherwise expressly specified or limited, if a first feature is described as being "above" or "below" a second feature, or similar descriptions, this may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Furthermore, when a first feature is described as being "above," "above," or "above" a second feature, it may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. When a first feature is described as being "below," "below," or "below" a second feature, it may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0074] It should be noted that if an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be an intermediate element. If an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be an intermediate element. If any, the terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used in this application are for illustrative purposes only and do not represent the only embodiment.

[0075] See Figures 1 to 4 As shown, Figure 1 The figure shows a schematic structural diagram of an end flanging die provided in one embodiment of the present application. Figure 2 Shown Figure 1 Schematic diagram of the working state of the local structure under the die when the workpiece is pre-flanged. Figure 3 Shown Figure 1Schematic diagram of the working state of the local structure under the die before flanging the workpiece. Figure 4 Shown Figure 1 Schematic diagram of the working state of the local structure under the middle die completing the flanging of the workpiece.

[0076] In one embodiment of the present application, an end flanging die is provided, comprising: a workbench 201, a mounting seat 209 mounted on the workbench 201, a material pressing portion, and a material feeding portion; a workpiece 100 is placed on the workbench 201 along a first direction (as shown by arrow a in the figure); wherein the first direction is configured as the longitudinal extension direction of the workpiece 100; the material pressing portion is mounted on the mounting seat 209; the material pressing portion is configured to move along a second direction (as shown by arrow b in the figure) toward the workpiece 100 and press the workpiece 100; wherein the second direction is configured as a direction perpendicular to the plane where the first direction is located; The forming portion is mounted on the mounting seat 209; the forming portion in a closed state is configured to move along a first direction toward the workpiece 100, and fold the flange surface of the workpiece 100 to obtain a pre-flanged edge of the workpiece 100; the forming portion in an expanded state is further configured to move along a third direction (as shown by arrow c in the figure) and a fourth direction (as shown by arrow d in the figure), respectively, and fold the pre-flanged edge of the workpiece 100 to obtain a flange of the workpiece 100; wherein the third direction is configured as a direction having an angle with the first direction; and the fourth direction is configured as a direction symmetrical to the third direction relative to the first direction.

[0077] In this embodiment, it is only necessary to replace and adjust the components in the pressing part and the forming part that directly act on the workpiece according to the change in the cross-sectional shape of the workpiece, which is beneficial to reducing production costs and improving production efficiency.

[0078] The pressing unit is described in further detail below. It includes a punch 303, a pressing cylinder 203, a connecting plate 204, and a die 302. The punch 303 is mounted on a mounting base 209; the pressing cylinder 203 is mounted on the mounting base 209; the two pressing cylinders 203 are positioned on either side of the workpiece 100; the ends of the connecting plate 204 are connected to the output ends of the two pressing cylinders 203; and the die 302 is mounted on the connecting plate 204, with the die 302 and punch 303 facing each other.

[0079] Optionally, the pressing portion further includes a guide rod 202. The first end of the guide rod 202 is mounted on the mounting seat 209, and the second end of the guide rod 202 is connected to the connecting plate 204. The central axis of the guide rod 202 is arranged along the second direction, and is used to guide the movement direction of the output end of the pressing cylinder 203.

[0080] The forming section is further described in detail here. The forming section includes: a forming drive assembly, a first guide plate 212, a second guide plate 213, two forming slides 207, a first elastic member, a third guide plate 214, and two flanging inserts 304. The forming drive assembly is mounted on the mounting seat 209; the first guide plate 212 is mounted on the forming drive assembly along the first direction, and the first guide plate 212 is slidably connected to the mounting seat 209; the second guide plate 213 is L-shaped; the two forming slides 207 are respectively mounted with the second guide plates 213; the first connecting section of the second guide plate 213 is slidably connected to the output end of the forming drive assembly, and the second connecting section of the second guide plate 213 is slidably connected to the mounting seat 209; wherein the second connecting sections of the two second guide plates 213 are arranged along the third direction and the fourth direction respectively, and the first connecting section of the second guide plate 213 is arranged along the fifth direction. (as shown by arrow e in the figure); wherein, the fifth direction is configured to be perpendicular to the first direction and the second direction at the same time; the first elastic member is arranged along the fifth direction, and the first elastic member is installed between the two forming sliders 207; the third guide plate 214 is respectively installed on the opposite side of the two forming sliders 207 along the first direction, and the third guide plate 214 is slidingly connected to the mounting seat 209; the flanging insert 304 is installed on the forming slider 207; the two flanging inserts 304 are symmetrically arranged relative to the first direction, and the opposite sides of the two flanging inserts 304 are respectively in contact with the flanging surface of the workpiece 100.

[0081] Optionally, the first elastic member may be an elastic element with a rebound effect such as a spring, which will not be listed one by one here.

[0082] When the forming drive assembly moves along the first guide plate 212, the forming slider 207 is in a closed state, and the two flanging inserts 304 fold the flanging surface of the workpiece 100 to obtain a pre-flanging of the workpiece 100; when the forming slider 207 moves along the second guide plate 213, the forming slider 207 is in an open state, and the two flanging inserts 304 move along the third direction and the fourth direction respectively with the two forming sliders 207 and fold the pre-flanging of the workpiece 100 to obtain a flanging of the workpiece 100.

[0083] In an optional embodiment, the forming drive assembly includes a forming cylinder 210 and a drive slider 208. The forming cylinder 210 is mounted on a mounting base 209; one end of the drive slider 208 is connected to the output end of the forming cylinder 210; a first guide plate 212 is mounted on either side of the drive slider 208 along a first direction; and a first connecting section of a second guide plate 213 is slidably connected to the end of the drive slider 208 away from the forming cylinder 210. Any component capable of providing driving guidance for the forming slider in the first direction may be used, and is not limited to the forming drive assembly disclosed in this embodiment.

[0084] In an optional embodiment, the forming section further includes a stopper 215 and a second elastic member 205. The stopper 215 is mounted on the mounting base 209; the second elastic member 205 is mounted on opposite sides of the two forming slides 207; and the forming section moves along the first direction gradually approaching the flanged surface of the workpiece 100 until the second elastic member 205 abuts the stopper 215 and stops moving forward.

[0085] In an optional embodiment, the apparatus further includes a stopper 211 mounted along the second direction on a side of the mounting base 209 opposite to the workbench 201. The stopper 211 is used to prevent the driving slider and the forming slider from moving in the second direction.

[0086] The forming portion provided in this embodiment can perform flanging operations on the end of a workpiece in the first, third, and fourth directions, meeting the need for flanging the end across a mold. During use, only the flanging inserts need to be adaptively adjusted to meet the varying cross-sectional shapes of the workpiece end, with no other adjustments required, thereby improving production efficiency and reducing production costs.

[0087] In an optional embodiment, the apparatus further includes a support block 301 mounted on the worktable 201 and positioned between the workpiece 100 and the worktable 201. The support block 301 is configured to provide support for the workpiece that has not yet entered the holding portion, thereby preventing damage to the workpiece caused by bending in the longitudinal direction. The number of support blocks 301 may be multiple, and is not specifically limited herein, and may be adjusted based on the length of the workpiece 100.

[0088] In a specific embodiment, a detailed process of processing the workpiece 100 using the end flanging die provided in the above embodiment is provided, specifically including:

[0089] The workpiece 100 and the supporting block 301 , the concave die 302 , the convex die 303 and the flanging insert 304 corresponding to the workpiece 100 are prepared.

[0090] The forming cylinder 210 drives the driving slide 208 in the reverse direction of the first direction (refer to Figure 1 In the reverse direction of the arrow a shown in FIG, the flange insert 304 is retreated a certain distance, and the flange insert 304 is also retreated together with the punch 303 until the distance between the flange insert 304 and the punch 303 is sufficient to fit the flange surface 101 of the workpiece 100 before flanging. Figure 5 shown.

[0091] The pressing cylinder 203 drives the die 302 to be lifted up a certain distance along the second direction until the distance between the die 302 and the punch 303 is sufficient to accommodate the workpiece 100 .

[0092] The workpiece 100 is placed between the die 302 and the punch 303 , and the other end of the workpiece 100 is supported by the support block 301 .

[0093] The pressing cylinder 203 drives the female die 302 to move downward in the second direction and close with the male die 303 to fix the workpiece 100 .

[0094] like Figure 2 As shown, the forming cylinder 210 starts to work, pushing the forming slide 207 to move toward the workpiece along the first direction. Figure 6 As shown, the first working surface 305 of the flanging insert 304 first contacts the flanging surface 101 of the workpiece before flanging and pre-bends it into a certain angle to obtain the pre-flanging of the workpiece 100. Generally, the flanging insert 304 can be an oblique wedge-shaped block, and the first working surface 305 of the flanging insert 304 can be an oblique wedge surface. Figure 3 As shown, after the slider 207 to be formed is slidably connected to the mounting seat 209 through the second guide plate 213, the two forming sliders 207 start to move along the third direction (reference Figure 2 Arrow c) and the fourth direction (reference Figure 2 The arrow d) shows the forward movement, during which the second working surface 306 of the flanging insert continues to contact the flanging surface of the workpiece and folds it to the final required angle of the product to obtain the flanging of the workpiece 100, as shown in FIG. Figure 4 The angles between the third direction and the fourth direction and the first direction are not specifically limited and can be set according to actual process requirements.

[0095] After the flanging is completed, the forming cylinder 210 is exhausted, and the driving slider 208 together with the flanging insert 304 first moves in the opposite direction of the aforementioned third direction and the fourth direction under the rebound force of the compressed second elastic member 205, and then moves along the first direction driven by the forming cylinder 210 until it returns to the starting point.

[0096] The pressing cylinder 203 drives the die 302 to move upward, so that the die 302 is separated from the punch 303. At this time, the workpiece 100 is removed and the flanging process is completed.

[0097] refer to Figure 5 As shown, the flanging surface 101 of the workpiece before flanging is parallel to the side wall of the workpiece 100 , and the flanging surface 102 of the workpiece after flanging forms a certain angle α with the side wall of the workpiece 100 , and α is between 45° and 180°.

[0098] The workpiece 100 may be any beam-shaped structure such as an X-shaped or U-shaped structure, which will not be listed here one by one.

[0099] The technical features of the above-mentioned embodiments can be combined arbitrarily. In order to make the description concise, not all possible combinations of the technical features in the above-mentioned embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0100] The above-described embodiments merely represent several implementation methods of the present application. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that a person of ordinary skill in the art may make various modifications and improvements without departing from the spirit of the present application, and these modifications and improvements fall within the scope of protection of the present application. Therefore, the scope of protection of the present patent application shall be determined by the appended claims.

Claims

1. An end flanging die, characterized in that: include: A workbench (201), on which a workpiece (100) is placed along a first direction; wherein the first direction is configured as a longitudinal extension direction of the workpiece (100); A mounting seat (209) is mounted on the workbench (201); a material pressing portion mounted on the mounting seat (209); the material pressing portion is configured to move in a second direction toward the workpiece (100) and to press the workpiece (100); wherein the second direction is configured to be a direction perpendicular to the plane of the first direction; and A forming portion is mounted on the mounting seat (209); the forming portion in a closed state is configured to move along the first direction toward the workpiece (100) and fold the flange surface of the workpiece (100) to obtain a pre-flanged edge of the workpiece (100); the forming portion in an expanded state is further configured to move along a third direction and a fourth direction respectively and fold the pre-flanged edge of the workpiece (100) to obtain a flanging edge of the workpiece (100); wherein the third direction is configured as a direction having an angle with the first direction; and the fourth direction is configured as a direction symmetrical to the third direction relative to the first direction.

2. The end flanging die according to claim 1, characterized in that: The pressing part includes: A male mold (303) is mounted on the mounting seat (209); A pressing cylinder (203) is mounted on the mounting seat (209); two pressing cylinders (203) are respectively arranged on both sides of the workpiece (100); A connecting plate (204), both ends of which are connected to the output ends of the two pressing cylinders (203); and The female mold (302) is mounted on the connecting plate (204), and the female mold (302) and the male mold (303) are arranged opposite to each other.

3. The end flanging die according to claim 2, characterized in that: The pressing part also includes: A guide rod (202), wherein a first end of the guide rod (202) is mounted on the mounting seat (209), and a second end of the guide rod (202) is connected to the connecting plate; and a central axis of the guide rod (202) is arranged along the second direction.

4. The end flanging die according to claim 1, characterized in that: The forming part includes: A forming drive assembly mounted on the mounting seat (209); a first guide plate (212) mounted on the forming drive assembly along the first direction, and the first guide plate (212) is slidably connected to the mounting seat (209); The second guide plate (213) is L-shaped; Two forming slide blocks (207) are respectively mounted with the second guide plates (213); a first connecting section of the second guide plate (213) is slidably connected to the output end of the forming drive assembly, and a second connecting section of the second guide plate (213) is slidably connected to the mounting seat (209); wherein the second connecting sections of the two second guide plates (213) are respectively arranged along the third direction and the fourth direction, and the first connecting section of the second guide plate (213) is arranged along a fifth direction; wherein the fifth direction is configured to be a direction perpendicular to both the first direction and the second direction; a first elastic member, the first elastic member being arranged along the fifth direction and being installed between the two forming slide blocks (207); A third guide plate (214) is mounted on opposite sides of the two forming slide blocks (207) along the first direction, and the third guide plate (214) is slidably connected to the mounting seat (209); and A flanging insert (304) is mounted on the forming slider (207); the two flanging inserts (304) are symmetrically arranged relative to the first direction, and opposite sides of the two flanging inserts (304) are in contact with the flanging surface of the workpiece (100); When the forming drive assembly moves along the first guide plate (212), the forming slider (207) is in a closed state, and the two flanging inserts (304) fold the flanging surface of the workpiece (100) to obtain the pre-flanging of the workpiece (100); when the forming slider (207) moves along the second guide plate (213), the forming slider (207) is in an open state, and the two flanging inserts (304) move along the third direction and the fourth direction respectively with the two forming sliders (207) and fold the pre-flanging of the workpiece (100) to obtain the flanging of the workpiece (100).

5. The end flanging die according to claim 4, characterized in that: The forming drive assembly comprises: a forming cylinder (210), mounted on the mounting seat (209); and A driving slider (208), one end of which is connected to the output end of the forming cylinder (210); the first guide plate (212) is installed on both sides of the driving slider (208) along the first direction; and the first connecting section of the second guide plate (213) is slidably connected to the end of the driving slider (208) away from the forming cylinder (210).

6. The end flanging die according to claim 4, characterized in that: The forming section further comprises: a limit block (215), mounted on the mounting seat (209); and The second elastic member (205) is respectively installed on the opposite sides of the two forming slide blocks (207); the forming portion moves along the first direction close to the flange surface of the workpiece (100) until the second elastic member (205) abuts against the limit block (215).

7. The end flanging die according to claim 1, characterized in that: Also includes: A stopper (211) is mounted along the second direction on a side of the mounting seat (209) opposite to the workbench (201).

8. The end flanging die according to claim 1, characterized in that: The included angle between the flange of the workpiece (100) and the side wall of the workpiece (100) is 45 to 180 degrees.

9. The end flanging die according to any one of claims 1 to 8, characterized in that: The workpiece (100) is in any one of an X-shape and a U-shape.

10. The end flanging die according to any one of claims 1 to 8, characterized in that: Also includes: A support block (301) is mounted on the workbench (201), and the support block (301) is arranged between the workpiece (100) and the workbench (201); wherein a plurality of the support blocks (301) are evenly distributed along the first direction.

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