Bending die mechanism for one-time forming of end edge

Abstract

The invention discloses an end edge one-time forming bending die mechanism. According to the bending die mechanism, the inclined plane blocks are arranged on the upper die frame and matched with the inclined plane blocks on the lower die frame, and the side pressing die and the side padding die are driven to translate on the lower die frame through the inclined plane effect between the inclined plane blocks when the upper die frame moves downwards, so that tensioning of the padding blocks, pressing of a main body plate of a machined plate and clamping of a side panel are achieved; and in cooperation with the height difference relation of the bending die head and all the parts, stepping and linkage operation of clamping and bending operation of the ends of the main body plate and the side panel of the machined plate is achieved, and finally end edge bending forming is completed through one-time lower die downward pressing.

Description

Technical Field

[0001] The invention relates to sheet metal processing equipment. Background Art

[0002] In the sheet metal processing technology, large-size processing is usually completed first, and then small-size processing is completed. When processing small-size parts, due to the spatial interference caused by the large-size bending processing of the plate body, there are problems in the processing of small-size parts, such as the plate body is not easy to clamp and the operating head is not easy to extend into the processed part. The end edge bending involved in the present invention also belongs to small-size processing, and there is also the problem of plate clamping. The sheet material involved in the end edge bending of the present invention includes a main body plate and two side panels, and the two side panels are bent on the same side of the plate surface on both sides of the main body plate. Therefore, when the end edge of the main body plate is bent, there is a problem of providing support for the entire end of the sheet material. On the one hand, because when the end edge of the main body plate is bent, the side panel needs to be clamped at the same time, otherwise the connection between the side panel and the main body plate at the end is easily damaged. On the other hand, the support for the end of the main plate during bending usually includes a pad and a press block. If the size of the pad is precisely matched with the size of the main plate, it is difficult for the robot to clamp the plate into the pad. If the size of the pad is too small, the end edges of the main plate on both sides close to the side panels cannot be supported by the pad, and the bending is easy to deform. Not to mention that more complex sheet materials also include inward-bending edges that connect the side panels and are parallel to the main plate. The inward-bending edges are parallel to the main plate. In this case, the pad must be able to be tensioned, otherwise, either the end edges of the edge parts on both sides of the end of the main plate opposite to the inward-bending edges lack support, or mechanical automation cannot be achieved, and manual plugging is required. Summary of the invention

[0003] The problem to be solved by the present invention is to provide end support for the side panels formed by bending the same side of the main body panel when the end edge is bent, and integrate the operation of providing support for the end of the panel and the bending operation into one-step forming.

[0004] To solve the above problems, the solution adopted by the present invention is as follows: According to the present invention, an end edge one-time forming bending die mechanism comprises an upper die mechanism arranged on an upper die frame and a lower die mechanism on a lower die frame; the upper die frame is arranged above the lower die frame through a lifting guide mechanism; the upper die mechanism comprises two first active inclined plane blocks, two second active inclined plane blocks, a main body plate pressing die and a main body plate bending die; the lower die mechanism comprises two first passive inclined plane blocks, two second passive inclined plane blocks, two side panel padding dies, two side panel pressing dies and a center padding die; the first active inclined plane block, the second active inclined plane block, the first passive inclined plane block and the second passive inclined plane block are blocks provided with inclined planes and the bottom of the inclined planes are connected to vertical planes, and the first active inclined plane block and the second active inclined plane block are inverted; the center The center padding die is fixed on the lower die frame; the main body plate pressing die is arranged on the upper die frame through a spring guide and is located directly above the center padding die; the main body plate bending die is arranged close to the main body plate pressing die and has a different height position from the main body plate pressing die; when the upper die frame moves downward, after the main body plate pressing die is pressed on the center padding die, the spring guide connected to the main body plate pressing die contracts, and the main body plate bending die can continue to descend with the upper die frame until it is at the same height as the main body plate pressing die, and further descend to realize the end edge bending action; the two side panel padding dies and the two side panel pressing dies are respectively arranged at both ends of the center padding die, and are mirror-symmetrical; the first passive inclined plane block is fixedly connected to the side panel padding die, can translate, and is connected A spring guide is connected; the second passive inclined surface block is fixedly connected to the side panel pressing die, can translate, and is connected to a spring guide; the first passive inclined surface block and the second passive inclined surface block are matched with the inclined surfaces of the first active inclined surface block and the second active inclined surface block respectively; when the upper die frame moves downward, the inclined surfaces of the first active inclined surface block and the second active inclined surface block can be pressed on the inclined surfaces of the first passive inclined surface block and the second passive inclined surface block respectively, thereby driving the first passive inclined surface block and the second passive inclined surface block to translate, and then driving the side panel padding die to translate obliquely in the direction away from the mirror symmetry center and the side panel pressing die to translate in the direction close to the mirror symmetry center; before the upper die frame moves downward to the same height as the main plate bending die and the main plate pressing die, the first active The inclined surfaces of the inclined plane block and the second active inclined plane block slide away from the inclined surfaces of the first passive inclined plane block and the second passive inclined plane block respectively, so that the first active inclined plane block and the second active inclined plane block are respectively engaged with the vertical surfaces of the first passive inclined plane block and the second passive inclined plane block, thereby making the side panel pressing mold press the side panel padding mold in the lateral direction; when the upper mold frame moves upward, the first active inclined plane block and the second active inclined plane block are respectively separated from the first passive inclined plane block and the second passive inclined plane block, the spring elastic force of the spring guide connected to each of the first active inclined plane block and the second active inclined plane block respectively drives the side panel padding mold to translate obliquely toward the direction close to the center of mirror symmetry, and drives the side panel pressing mold to translate toward the direction away from the center of mirror symmetry.

[0005] Further, according to the bending die mechanism of the present invention, when the upper die frame moves downward, the following relationship exists: ts2≥ts1 and ts2≥ts0, te2>te1; wherein, ts0 is the moment when the main plate pressing die starts to press the center pad die; ts1 is the moment when the first active ramp block and the first passive ramp block start to contact each other; ts2 is the moment when the second active ramp block and the second passive ramp block start to contact each other; te1 is the moment when the first active inclined plane block and the first passive inclined plane block start to engage with each other on the vertical plane when the inclined planes slide away; te2 is the moment when the second active ramp block and the second passive ramp block start to slide away from the vertical surface and engage.

[0006] Further, according to the bending die mechanism of the present invention, a side panel edge fold avoidance opening is provided at the bottom of the side panel padding die toward the side panel pressing die.

[0007] Further, according to the bending mold mechanism of the present invention, when the first active inclined plane block and the first passive inclined plane block are engaged, the top surface of the side panel padding mold and the top surface of the center padding mold form an integral smooth padding surface; the front end surface of the side panel padding mold and the front end surface of the center padding mold are aligned.

[0008] Further, according to the bending die mechanism of the present invention, a horizontal guide strip is provided on the inclined surface of the end of the center padding die, and a guide slot matching the guide strip is provided on the inclined surface of the side panel padding die; the guide strip is clamped in the guide slot.

[0009] Further, according to the bending die mechanism of the present invention, the first passive inclined plane block and the side panel padding die are fixed on a translation card plate; the translation card plate is clamped in an obliquely arranged translation card slot and can be obliquely translated.

[0010] Further, according to the bending die mechanism of the present invention, the translation slot includes a slide slot arranged on the lower die frame and L-shaped clips arranged on both sides of the slide slot; the L-shaped clips are buckled on both sides of the translation clip plate in an inverted manner, so that the translation clip plate is clamped in the translation slot.

[0011] The technical effects of the present invention are as follows: the present invention links the movement of the side panel padding mold and the side panel pressing mold with the lifting and lowering of the upper mold mechanism through the inclined surface linkage of the inclined surface block, thereby realizing the linkage between the clamping operation of the processed sheet material and the lifting and lowering of the upper mold mechanism, and then realizing the lifting and lowering drive of the upper mold mechanism to clamp the end of the processed sheet material as a whole, and performing end edge bending after completing the overall clamping, finally realizing the one-time forming operation of end edge bending. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a structural schematic diagram of the lower mold mechanism of an embodiment of the present invention.

[0013] Figure 2 yes Figure 1 Enlarged view of the left middle portion.

[0014] Figure 3 It is a structural schematic diagram of the upper mold mechanism of an embodiment of the present invention.

[0015] Figure 4 It is a schematic diagram of the overall structure of the bending die mechanism according to an embodiment of the present invention.

[0016] Figure 5 It is a schematic structural diagram of a sheet material processed by a bending die mechanism according to an embodiment of the present invention.

[0017] Figure 6 It is a working principle diagram of the inclined surface action of the inclined surface block in an embodiment of the present invention.

[0018] In the above figures, 1 is an upper die mechanism, 11 is a first active inclined plane block, 12 is a second active inclined plane block, 13 is a main body plate pressing die, 14 is a main body plate bending die, and 15 is a third spring guide; 2 is a lower mold mechanism, 2011 is an active inclined plane, 2012 is an active vertical plane, 2021 is a passive inclined plane, 2022 is a passive vertical plane, 21 is a first passive inclined plane block, 211 is a first spring guide, 212 is a translation card plate, 22 is a second passive inclined plane block, 221 is a second spring guide, 23 is a center padding mold, 231 is a top surface of the center padding mold, 232 is a front end surface of the center padding mold, 233 is a side end of the center padding mold, 234 is a guide card strip, 24 is a side panel pressing mold, 25 is a side panel padding mold, 251 is an adapting inclined plane, 252 is a guide card slot, 253 is a side panel side folding avoidance port, 26 is a translation card slot, 261 is an L-shaped card strip, and 262 is an auxiliary slide plate; 8 is a sheet material, 81 is a main body plate, 811 is an end bending edge, 82 is a side panel, and 821 is an inner buckled bending edge; 91 is the upper mold frame, 911 is the main beam plate, 912 is the mold frame table plate, 92 is the lower mold frame, 921 is the slide slot, 93 is the lifting guide mechanism, 931 is the lifting guide column, and 932 is the lifting guide sleeve. DETAILED DESCRIPTION

[0019] The present invention is further described in detail below with reference to the accompanying drawings.

[0020] Figure 4 An example of a bending die mechanism is provided, which is an end-edge one-time forming bending die mechanism for Figure 5The end edge bending of the sheet material 8 in the example includes an upper die mechanism 1 arranged on an upper die frame 91 and a lower die mechanism 2 on a lower die frame 92. The upper die frame 91 is arranged above the lower die frame 92 through a lifting guide mechanism 93. The sheet material 8 to be processed includes a main plate 81 and two side panels 82 that are bent and formed. The two side panels 82 are located on the same side of the plate surface of the main plate 81, are mirror-symmetrical, and are parallel to each other. The two side panels 82 also include an inwardly buckled inwardly buckled bending edge 821 that is bent inwardly. The end of the main plate 81 is provided with an end bending edge 811 that is formed by end bending. The end bending edge 811 is perpendicular to the main plate 81 and to the side panels 82. The end bending edge 811 is the part that the bending die mechanism of this embodiment needs to be bent and formed at the end edge. Since the processed sheet material 8 has an inward-bending edge 821 on the side panel 82, it is not easy to set a pad in the vertical space between the inward-bending edge 821 and the main plate 81. The bending mold mechanism of this embodiment can first complete the pressing of the main plate 81, the filling of the pad in the vertical space between the inward-bending edge 821 and the main plate 81, and the pressing of the side panel 82 when the upper mold mechanism 1 is pressed down, and then complete the bending of the end bending edge 811 after the above-mentioned pressing, thereby realizing one-time forming of the end edge bending.

[0021] The lifting guide mechanism 93 is used for lifting and guiding, so that the upper mold mechanism 1 can move up and down facing the lower mold mechanism 2. In this embodiment, the lifting guide mechanism 93 is realized by four sets of guide pillars and guide sleeves. Figure 1 and Figure 3 The guide post and guide sleeve mechanism includes a guide post 931 connected to the upper mold frame 91 and a guide sleeve 932 connected to the lower mold frame 92. The guide post 931 and the guide sleeve 932 are connected to cooperate with the long upper mold frame 91 and the lower mold frame 92, so that the bending mold mechanism is connected into a long rectangular structure, and the four sets of guide post and guide sleeve mechanisms are respectively the four corners of the long rectangular structure.

[0022] Upper die mechanism 1, refer to Figure 3, including two first active inclined plane blocks 11, two second active inclined plane blocks 12, a main plate pressing die 13 and a main plate bending die 14. In this embodiment, the upper mold frame 91 includes a main beam plate 911 and a mold frame platen 912. The main beam plate 911 and the mold frame platen 912 are both plate bodies, wherein the main beam plate 911 is connected to the guide column 931 of the guide column and guide sleeve mechanism. The mold frame platen 912 is fixedly arranged below the main beam plate 911 and is parallel to the main beam plate 911. The upper mold mechanism 1 is arranged on the mold frame platen 912. Among them, the two first active inclined plane blocks 11, the two second active inclined plane blocks 12 and the main plate bending die 14 are fixed on the mold frame platen 912, and the main plate pressing die 13 is arranged on the mold frame platen 912 through a plurality of spring guides. The main plate pressing die 13 and the main plate bending die 14 are long strips of plate bodies with arc-shaped concave bottom surfaces, and are closely arranged with the side surfaces in the direction of the long strips. The bottom surfaces of the arc-shaped concave surfaces of the main plate pressing die 13 and the main plate bending die 14 are adapted to the arc surface structure of the main plate 81. Those skilled in the art will understand that if the main plate 81 is a flat plate, then correspondingly, the bottom surfaces of the main plate pressing die 13 and the main plate bending die 14 can also be adaptively changed to flat surfaces. The spring guide connected to the main plate pressing die 13 is the third spring guide 15. The spring guide is a structure combining a spring and a guide column and a guide sleeve, which is familiar to those skilled in the art, and its specific structure will not be repeated in this specification. The heights of the main plate pressing die 13 and the main plate bending die 14 are different. When the upper die mechanism 1 is pressed downward following the upper die frame 91, that is, when the upper die frame 91 moves downward or descends, the main plate pressing die 13 first contacts the main plate 81 of the processed sheet material, and then as the upper die mechanism 1 continues to press downward, the spring on the third spring guide 15 contracts until the main plate bending die 14 contacts the main plate 81, and then the main plate bending die 14 continues to descend to perform the end edge bending action. When the main plate bending die 14 performs the end edge bending action, the spring on the third spring guide 15 further contracts. It can be seen that the main plate pressing die 13 acts on the main plate 81 through the spring elastic force of the third spring guide 15 to achieve the pressing of the main plate 81, that is, the main plate pressing die 13 can be pressed downward under the action of the spring of the third spring guide 15. The two first active inclined plane blocks 11 are respectively arranged on the two end sides of the long strip main plate pressing die 13, and are arranged in a mirror symmetrical manner. The two second active inclined plane blocks 12 are respectively arranged at the two ends of the long strip main plate pressing die 13, facing the ends of the main plate pressing die 13, and are arranged in a mirror symmetric manner. The mirror symmetry center of the two first active inclined plane blocks 11 and the mirror symmetry center of the two second active inclined plane blocks 12, that is, the mirror symmetry center of the entire bending die mechanism, are perpendicular to the long strip direction of the main plate pressing die 13. The mirror symmetry center referred to in the present invention refers to the mirror symmetry center of the entire bending die mechanism, and the mirror symmetry referred to is the mirror symmetry with the mirror symmetry center as the mirror surface.

[0023] Lower mold mechanism 2, refer to Figure 1 and Figure 2 , including two first passive inclined plane blocks 21, two second passive inclined plane blocks 22, two side panel padding molds 25, two side panel pressing molds 24 and a central padding mold 23. In this embodiment, the lower mold frame 92 is a plate structure. The two first passive inclined plane blocks 21, the two second passive inclined plane blocks 22, the two side panel padding molds 25, the two side panel pressing molds 24 and the central padding mold 23 are arranged on the plate surface of the lower mold frame 92 of the plate structure. The central padding mold 23 is an elongated body, fixed on the lower mold frame 92, and located directly below the main plate pressing mold 13. The elongated direction of the central padding mold 23 is parallel to the elongated direction of the main plate pressing mold 13. When the main plate pressing mold 13 is pressed down, the main plate pressing mold 13 can be pressed on the central padding mold 23, thereby pressing the main plate 81 placed on the central padding mold 23. The top surface of the center pad mold 23, i.e., the top surface 231 of the center pad mold, is an arcuate convex surface, which is compatible with the arcuate plate surface of the main plate 81. The center pad mold 23 is provided with a front end surface 232 of the center pad mold in the long strip direction, which is compatible with the main plate bending mold 14. When the main plate bending mold 14 moves downward to perform the end bending action, the main plate bending mold 14 is close to the front end surface 232 of the center pad mold. The two first passive inclined plane blocks 21 and the two second passive inclined plane blocks 22 are respectively set at the two ends of the center pad mold 23 in a mirror-symmetrical manner.

[0024] The first passive bevel block 21 and the second passive bevel block 22 in the lower mold mechanism 2 and the first active bevel block 11 and the second active bevel block 12 in the upper mold mechanism 1 are blocks containing bevels, and the bottom of the bevels is connected to a vertical surface. In the present invention, such a block containing a bevel and the bottom of the bevel is connected to a vertical surface is called a bevel block, the first passive bevel block 21 and the second passive bevel block 22 are passive bevel blocks, and the first active bevel block 11 and the second active bevel block 12 are active bevel blocks. Figure 6 The inclined plane of the passive inclined plane block is the passive inclined plane 2021, and the vertical plane connected to the bottom of the passive inclined plane 2021 is the passive vertical plane 2022; the active inclined plane block is an inverted inclined plane block, and the inclined plane of the active inclined plane block is the active inclined plane 2011, and the vertical plane connected to the bottom of the active inclined plane 2011, that is, the vertical plane connected to the top after inversion, is the active vertical plane 2012. The two first passive inclined plane blocks 21 and the two second passive inclined plane blocks 22 of the lower mold mechanism 2 are matched with the two first active inclined plane blocks 11 and the two second active inclined plane blocks 12 of the upper mold mechanism 1 respectively.

[0025] Specifically, the first passive bevel block 21 is fixedly connected to the side panel gasket mold 25, and can be horizontally translated in an oblique direction, and is connected to a spring guide. The oblique direction here is relative to the mirror center, and the oblique direction means that there is a certain angle between the horizontal translation direction of the first passive bevel block 21 and the side panel gasket mold 25 and the mirror plane of the mirror center. The spring guide connected to the first passive bevel block 21 and the side panel gasket mold 25 is the first spring guide 211. The two first active bevel blocks 11 are respectively located above the two first passive bevel blocks 21, and the bevels match. The matching of the bevels of the first active bevel block 11 and the first passive bevel block 21 means that the inclination angles of the bevels of the first active bevel block 11 and the bevels of the first passive bevel block 21 are the same. When the upper mold frame 91 moves downward, the inclined surface of the first active inclined surface block 11 can be pressed on the inclined surface of the first passive inclined surface block 21, and through the interaction between the inclined surfaces, the first passive inclined surface block 21 and the side panel gasket mold 25 are driven to translate obliquely in the direction away from the mirror symmetry center, and as the upper mold frame 91 continues to move downward, the inclined surface of the first active inclined surface block 11 can slide away from the inclined surface of the first passive inclined surface block 21, so that the vertical surface on the first active inclined surface block 11 is stuck on the vertical surface of the first passive inclined surface block 21, and then the first passive inclined surface block 21 and the side panel gasket mold 25 are stuck by the first active inclined surface block 11 and cannot continue to translate. When the upper mold frame 91 moves upward to separate the first active inclined surface block 11 and the first passive inclined surface block 21, the spring force of the first spring guide 211 pushes the first passive inclined surface block 21 and the side panel gasket mold 25 to translate obliquely in the direction close to the mirror symmetry center. That is, the first passive ramp block 21 can move obliquely toward the mirror symmetry center under the action of the spring of the first spring guide 211 .

[0026] Similarly, the second passive bevel block 22 is connected to the side panel die 24 and can translate in a direction perpendicular to the mirror symmetry center, and is connected to a spring guide. The spring guide connected to the second passive bevel block 22 and the side panel die 24 is a second spring guide 221. The two second active bevel blocks 12 are respectively located above the two second passive bevel blocks 22, and the bevels match. The matching of the slopes of the second active bevel block 12 and the second passive bevel block 22 means that the slopes of the second active bevel block 12 and the second passive bevel block 22 have the same inclination angle. When the upper mold frame 91 moves downward, the slope of the second active bevel block 12 can be pressed on the slope of the second passive bevel block 22. Through the interaction between the slopes, the second passive bevel block 22 and the side panel pressing die 24 are driven to translate in the direction close to the mirror symmetry center. As the upper mold frame 91 continues to move downward, the slope of the second active bevel block 12 can slide out of the slope of the second passive bevel block 22, so that the vertical surface on the second active bevel block 12 is stuck on the vertical surface of the second passive bevel block 22, and then the second passive bevel block 22 and the side panel pressing die 24 are stuck by the second active bevel block 12 and cannot continue to translate. When the upper mold frame 91 moves upward to separate the second active ramp block 12 and the second passive ramp block 22, the spring force of the second spring guide 222 pushes the second passive ramp block 22 and the side panel pressing die 24 to translate in a direction away from the mirror symmetry center. That is, the second passive ramp block 22 can translate in a direction away from the mirror symmetry center under the action of the spring of the second spring guide 222.

[0027] The cooperation principle between the second passive inclined plane block 22 and the second active inclined plane block 12 and the cooperation principle between the first passive inclined plane block 21 and the first active inclined plane block 11 can be specifically referred to Figure 6When the first active inclined plane block 11 or the second active inclined plane block 12 as the active inclined plane block descends to the SA position, the active inclined plane 2011 of the active inclined plane block begins to press the passive inclined plane 2021 of the first passive inclined plane block 21 or the second passive inclined plane block 22 as the passive inclined plane block. At this time, the passive inclined plane block is located at the initial position PA. When the active inclined plane block continues to descend, the passive inclined plane block is pushed to translate to the right by the action of the active inclined plane 2011 and the passive inclined plane 2021. When the passive inclined plane block translates to the PB position, the active inclined plane 2011 slides off the passive inclined plane 2021, and the active vertical plane 2012 of the active inclined plane block is stuck on the passive vertical plane 2022 of the passive inclined plane block. At this time, the active inclined plane block can continue to descend along the fit between the active vertical plane 2012 and the passive vertical plane 2022 until it descends to the SB position. When the active bevel block moves upward to separate from the passive bevel block, the spring force of the spring guide acts on the passive bevel block in the left direction indicated by the arrow FK, pushing the passive bevel block back from the PB position to its initial position PA. In the above process, the cooperation between the second passive bevel block 22 and the second active bevel block 12 is different from the cooperation between the first passive bevel block 21 and the first active bevel block 11 in that: first, the first passive bevel block 21 and the side panel padding mold 25 move obliquely while the movement direction of the second passive bevel block 22 and the side panel pressing mold 24 is perpendicular to the mirror symmetry center; second, the first passive bevel block 21 moves in a direction close to the mirror symmetry center under the action of the spring while the second passive bevel block 22 moves in a direction away from the mirror symmetry center under the action of the spring; third, the first passive bevel block 21 moves in a direction away from the mirror symmetry center when driven while the second passive bevel block 22 moves in a direction close to the mirror symmetry center when driven.

[0028] The two side panel gasket molds 25 are respectively arranged at the two ends of the central gasket mold 23, and are arranged close to the central gasket mold 23. The two side panel gasket molds 25 are mirror-symmetrical. More specifically, the two ends of the central gasket mold 23 in the long strip direction are side end faces. The side end face of the central gasket mold 23, that is, the side end 233 of the central gasket mold is a vertical inclined plane parallel to the translation direction of the first passive inclined plane block 21. The side panel gasket mold 25 is provided with an adapting inclined plane 251 that matches the inclined plane of the side end 233 of the central gasket mold. The side panel gasket mold 25 fits the side end 233 of the central gasket mold through the adapting inclined plane 251, so that when the side panel gasket mold 25 is translated obliquely, the side panel gasket mold 25 is close to the central gasket mold 23. When the first active inclined plane block 11 and the first passive inclined plane block 21 are engaged through the vertical plane, the top surface of the side panel gasket mold 25 and the top surface 231 of the center gasket mold together form an integral smooth gasket surface, and the front end surface of the side panel gasket mold 25 and the front end surface 232 of the center gasket mold are aligned. When the main plate pressing mold 13 is pressed down, the main plate pressing mold 13 is pressed on the smooth gasket surface formed by the top surface of the side panel gasket mold 25 and the top surface 231 of the center gasket mold. The aligned front end surface of the side panel gasket mold 25 and the front end surface 232 of the center gasket mold together form the mating surface of the main plate bending mold 14, and when the main plate bending mold 14 moves downward to perform the end edge bending action, the main plate bending mold 14 is close to the mating surface.

[0029] In this embodiment, the side panel padding mold 25 and the first active inclined surface block 11 are arranged on the translation card plate 212 and are located at both ends of the translation card plate 212. The fixed connection between the side panel padding mold 25 and the first active inclined surface block 11 is achieved by the fixed connection of the translation card plate 212. The translation card plate 212 is stuck in the obliquely arranged translation card slot 26 and can be translated obliquely horizontally. More specifically, the translation card slot 26 includes a slide groove 921 arranged on the lower mold frame 92 and an L-shaped card strip 261 arranged on both sides of the slide groove 921. The L-shaped card strip 261 has an L-shaped structure. The two L-shaped card strips 261 are buckled on both sides of the translation card plate 212 in an inverted manner, so that the translation card plate 212 is stuck in the translation card slot 26 and is located in the slide groove 921. In order to reduce the friction resistance of the translation card plate 212 in the translation card slot 26, in this embodiment, an auxiliary slide plate 262 is further provided in the slide slot 921. The translation card plate 212 is provided on the auxiliary slide plate 262.

[0030] The working principle of this embodiment is as follows: Initially, due to the action force of the spring of the first spring guide 211, the side panel padding molds 25 on both sides shrink obliquely toward the mirror center, so that the padding block composed of the side panel padding molds 25 on both sides and the central padding mold 23 has smaller left and right dimensions. Therefore, when the robot places the processed sheet 8 on the padding block, the padding block can pass through the space between the inward bent edges 821 of the side panels 82 on both sides, so that the main body panel 81 can be laid on the padding block. When the processed sheet material 8 is placed on the lower die mechanism 2 in a mirror-image center overlap manner, the downward pressure driving mechanism drives the upper die mechanism 1 to press down, and when the upper die frame 91 descends to the main plate pressing die 13 to press the center padding die 23, the end of the main plate 81 is clamped between the main plate pressing die 13 and the center padding die 23; when the upper die frame 91 descends to the inclined surface of the first active inclined surface block 11 to press the inclined surface of the first passive inclined surface block 21, the side panel padding die 25 is driven to move obliquely horizontally until the front end surface of the side panel padding die 25 is aligned with the front end surface 231 of the center padding die, the vertical surface of the first active inclined surface block 11 is engaged with the first passive inclined surface block 21, and then the side panel padding die 25 is stuck and remains motionless; when the upper die frame 91 descends to the inclined surface of the second active inclined surface block 12 to press the first passive inclined surface block 21 When the inclined surface of the block 22 is formed, the side panel pressing die 24 is driven to move inward until the side panel pressing die 24 presses the side panel padding die 25 from the side so that the side panel 82 is clamped between the side panel pressing die 24 and the side panel padding die 25, the vertical surface of the second active inclined surface block 12 and the second passive inclined surface block 22 are engaged, and then the side panel pressing die 24 is stuck and remains motionless; when the upper mold frame 91 descends to the same height as the main plate bending die 14 and the main plate pressing die 13, the first active inclined surface block 11 and the second active inclined surface block 12 respectively complete the vertical surface engagement with the first passive inclined surface block 21 and the second passive inclined surface block 22, thereby firmly clamping the main plate 81 and the side panel 82, and finally as the upper mold frame 91 continues to descend with the main plate bending die 14, the end edge bending of the main plate 81 is completed. After the bending is completed, the upper mold frame 91 rises, the first active inclined plane block 11 and the second active inclined plane block 12 are separated from the first passive inclined plane block 21 and the second passive inclined plane block 22 respectively, and the springs of the first spring guide 211 and the second spring guide 221 respectively drive the side panel padding mold 25 and the side panel pressing mold 24 to return to their initial positions.

[0031] In the process of the upper mold frame 91 moving downward to complete the end edge bending, those skilled in the art will understand that by changing the matching relationship between the bevels of the first active bevel block 11 and the first passive bevel block 21 and the matching relationship between the bevels of the second active bevel block 12 and the second passive bevel block 22, the order of the various operation steps can be changed. In this embodiment, first, the main plate pressing die 13 presses the main plate 81, then, the side panel padding die 25 is translated to align with the front end surface of the center padding die 23, and finally, the side panel pressing die 24 presses the side panel 82 onto the side panel padding die 25. That is, when the upper mold frame 91 moves downward, there is the following time relationship: ts2≥ts1 and ts2≥ts0, te2>te1; wherein, ts0 is the time when the main plate pressing die 13 starts to press the central pad die 23, that is, the time when the main plate pressing die 13 starts to press the main plate 81; ts1 is the moment when the first active ramp block 11 and the first passive ramp block 21 start to contact each other, that is, the moment when the side panel gasket mold 25 starts to move; ts2 is the moment when the second active ramp block 12 and the second passive ramp block 22 start to contact each other, that is, the moment when the side pressing die 24 starts to move; te1 is the moment when the first active inclined plane block 11 and the first passive inclined plane block 21 start to engage with each other vertically when the inclined planes slide away, that is, the moment when the side panel gasket mold 25 is aligned with the front end surface of the center gasket mold 23; te2 is the moment when the second active ramp block 12 and the second passive ramp block 22 slide away from each other and start to engage with the vertical surface, that is, the moment when the side panel pressing die 24 presses the side panel 82 .

[0032] In addition, in order to ensure the translation stability of the side panel gasket mold 25, in this embodiment, the central gasket mold side end 233 of the central gasket mold 23 is provided with a guide clamping strip 234, and the adapting inclined surface 251 of the side panel gasket mold 25 is provided with a guide clamping groove 252. The guide clamping strip 234 and the guide clamping groove 252 are arranged horizontally, and the guide clamping strip 234 is clamped in the guide clamping groove 252.

[0033] In addition, in order to adapt to the inwardly bent edge 821 of the side panel 82 of the sheet material being processed in this embodiment, the side panel padding die 25 of this embodiment is provided with a side panel edge fold avoidance opening 253 adapted to the inwardly bent edge 821 toward the bottom of the side panel pressing die 24. Thus, when the side panel pressing die 24 and the side panel padding die 25 clamp the side panel 82, the inwardly bent edge 821 can be located in the side panel edge fold avoidance opening 253.

Claims

1. A one-step forming bending die mechanism for an end edge, characterized in that: It comprises an upper die mechanism arranged on an upper die frame and a lower die mechanism on a lower die frame; the upper die frame is arranged above the lower die frame through a lifting guide mechanism; the upper die mechanism comprises two first active inclined plane blocks, two second active inclined plane blocks, a main body plate pressing die and a main body plate bending die; the lower die mechanism comprises two first passive inclined plane blocks, two second passive inclined plane blocks, two side panel padding dies, two side panel pressing dies and a central padding die; the first active inclined plane block, the second active inclined plane block, the first passive inclined plane block and the second passive inclined plane block are blocks provided with inclined planes and the bottom of the inclined planes are connected to vertical planes, and the first active inclined plane block, the second active inclined plane block, the first passive inclined plane block and the second passive inclined plane block are blocks provided with inclined planes and the bottom of the inclined planes are connected to vertical planes, and the first active inclined plane block, the second active inclined plane block and the first passive inclined plane block are blocks provided with inclined planes and the bottom of the inclined planes are connected to vertical planes, and the first active inclined plane block, the second active inclined plane block and the second ... The moving inclined plane block and the second active inclined plane block are inverted; the central padding die is fixed on the lower die frame; the main plate pressing die is arranged on the upper die frame through a spring guide and is located directly above the central padding die; the main plate bending die is arranged close to the main plate pressing die and has a different height position from the main plate pressing die; when the upper die frame moves downward, after the main plate pressing die is pressed on the central padding die, the spring guide connected to the main plate pressing die contracts, and the main plate bending die can follow the upper die frame to continue to descend until it is at the same height as the main plate pressing die, and further descend to realize the end edge bending action; two side panel padding dies and two The side panel pressing molds are respectively arranged at the two ends of the central padding mold, and are mirror-symmetrical; the first passive inclined plane block is fixedly connected to the side panel padding mold, can be translated, and is connected with a spring guide; the second passive inclined plane block is fixedly connected to the side panel pressing mold, can be translated, and is connected with a spring guide; the first passive inclined plane block and the second passive inclined plane block are matched with the inclined planes of the first active inclined plane block and the second active inclined plane block respectively; when the upper mold frame moves downward, the inclined planes of the first active inclined plane block and the second active inclined plane block can be pressed on the inclined planes of the first passive inclined plane block and the second passive inclined plane block respectively, thereby driving the first passive inclined plane block to move in a certain direction. The inclined plane block and the second passive inclined plane block translate, thereby driving the side panel padding mold to translate obliquely in a direction away from the mirror symmetry center and the side panel pressing mold to translate in a direction close to the mirror symmetry center; before the upper mold frame moves downward to the same height as the main plate bending mold and the main plate pressing mold, the inclined planes of the first active inclined plane block and the second active inclined plane block slide away from the inclined planes of the first passive inclined plane block and the second passive inclined plane block respectively, so that the first active inclined plane block and the second active inclined plane block are respectively engaged with the vertical planes of the first passive inclined plane block and the second passive inclined plane block, thereby causing the side panel pressing mold to press the side panel padding mold in the lateral direction; When the upper mold frame moves upward, after the first active inclined block and the second active inclined block are separated from the first passive inclined block and the second passive inclined block respectively, the spring elastic force of the spring guide members connected to the first active inclined block and the second active inclined block respectively drives the side panel padding mold to translate obliquely toward the direction close to the mirror symmetry center, and drives the side panel pressing mold to translate toward the direction away from the mirror symmetry center.

2. The bending die mechanism according to claim 1, characterized in that: When the upper mold frame moves downward, the following relationship exists: ts2≥ts1 and ts2≥ts0, te2>te1; wherein, ts0 is the moment when the main plate pressing die starts to press the center pad die; ts1 is the moment when the first active ramp block and the first passive ramp block start to contact each other; ts2 is the moment when the slopes of the second active ramp block and the second passive ramp block begin to contact; te1 is the moment when the first active inclined plane block and the first passive inclined plane block start to engage with each other on the vertical plane when the inclined planes slide away; te2 is the moment when the second active ramp block and the second passive ramp block start to slide away from the vertical surface and engage.

3. The bending die mechanism according to claim 1, characterized in that: The side panel padding mold is provided with a side panel edge folding avoidance opening at the bottom thereof facing the side panel pressing mold.

4. The bending die mechanism according to claim 1, 2 or 3, characterized in that: When the first active inclined plane block and the first passive inclined plane block are engaged, the top surface of the side panel gasket mold and the top surface of the central gasket mold form an integral smooth gasket surface; the front end surface of the side panel gasket mold and the front end surface of the central gasket mold are aligned.

5. The bending die mechanism according to claim 4, characterized in that: The inclined surface at the end of the central padding mold is provided with a horizontal guide card strip, and the inclined surface of the side panel padding mold is provided with a guide card slot matching the guide card strip; the guide card strip is clamped in the guide card slot.

6. The bending die mechanism according to claim 4, characterized in that: The first passive inclined plane block and the side panel padding mold are fixed on a translation card plate; the translation card plate is clamped in an obliquely arranged translation card slot and can be obliquely translated.

7. The bending die mechanism according to claim 6, characterized in that: The translation slot includes a slide slot arranged on the lower mold frame and L-shaped clips arranged on both sides of the slide slot; the L-shaped clips are buckled on both sides of the translation card plate in an inverted manner, so that the translation card plate is clamped in the translation slot.

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