Machining die and machining method of special-shaped purline for aluminum veneer curtain wall

Abstract

The invention discloses a machining die for a special-shaped purline for an aluminum veneer curtain wall, which comprises an upper die holder and a lower die holder, two symmetrically arranged bending driving feet are mounted at the bottom of the upper die holder, two symmetrically arranged bending channels are formed in the top of the lower die holder, an aluminum plate is paved on the top of the lower die holder, arc-shaped sections are arranged in the bending channels, and the arc-shaped sections are connected with the bending driving feet. The lower mold base comprises two symmetrically-arranged fixed mold bodies, two symmetrically-arranged movable mold bodies are movably installed between the two fixed mold bodies, the movable mold bodies and the fixed mold bodies are matched in a one-to-one correspondence mode, the lower mold base is provided with a demolding auxiliary mechanism, and the demolding auxiliary mechanism is in transmission connection with the two movable mold bodies. The two symmetrical bending channels are designed on the lower die base, the two bending driving feet installed on the upper die base can push an aluminum plate to slide into the bending channels, the arc-shaped edge curling effect of the aluminum plate is achieved through the arc-shaped sections at the ends of the bending channels, and the aluminum plate bending die has the advantages of being high in machining efficiency, good in machining effect and convenient to demold.

Description

Technical Field

[0001] The present invention relates to the technical field of building material production equipment, and more particularly to a processing die and a processing method of special-shaped purlins for aluminum single-plate curtain walls. Background Art

[0002] Aluminum alloy sheets have a series of advantages such as light weight, high strength, and good plasticity, so they have become the preferred material in the field of building materials and are often made into aluminum veneer curtain walls. Purlins are installed in some large-area aluminum veneer curtain walls to strengthen the surface of the aluminum veneer curtain wall. Figure 5 The figure shows a special-shaped purlin component. The characteristic of the purlin is that it has arc curling on both sides in the width direction. The curling makes the purlin appearance beautiful and can meet the aesthetic needs of users. However, compared with the general right-angle folding edge, the processing of the arc curling becomes a problem. This solution is used to solve the processing problem of this special-shaped purlin. Summary of the Invention

[0003] The purpose of the present invention is to solve the processing difficulties of the above-mentioned prior art and provide a processing mold and a processing method for special-shaped purlins for aluminum single-plate curtain walls. The present invention is designed with two symmetrical bending channels on the lower mold base, and the two bending drive feet installed on the upper mold base can push the aluminum plate to slide into the bending channel, and the arc section at the end of the bending channel is used to form an arc-shaped curling effect of the aluminum plate. The present invention has the advantages of high processing efficiency, good processing effect and convenient demolding.

[0004] In order to achieve the above object, the present invention adopts the following technical solutions:

[0005] The cam is secured to the bottom of the cam and secured to the bottom of the cam, and the cam is secured to the bottom of the cam.

[0006] Furthermore, the bending channel includes an inclined section, the inclined section is connected to the top opening of the bending channel, the arc section is connected to the end of the inclined section, the arc section is opened on the movable mold body, the bending driving foot includes a foot handle and a foot head, and two symmetrically arranged foot grooves are opened at the bottom of the upper mold base, and the two bending driving feet are respectively installed in the two foot grooves, and the bending driving foot is rotatably installed in the foot groove through the foot handle, and the foot head of the bending driving foot droops beyond the bottom plane of the upper mold base, the foot head is arc-shaped, and the size of the foot head matches the arc section of the bending channel, and the foot groove is provided with a rotational movement space for the bending driving foot.

[0007] Furthermore, a shallow groove is provided on the top of the lower die base, and a flat aluminum plate is positioned and paved in the shallow groove.

[0008] Furthermore, the upper die base is equipped with two symmetrically arranged pressure plate elements, which are arranged between the two bending drive feet. Two upright first piston holes are provided in the upper die base, and the two pressure plate elements are respectively installed in the two first piston holes. The pressure plate element includes an extrusion block, a first piston and a first spring. The first piston is matched and installed in the first piston hole. The first piston can move along the length direction of the first piston hole. One end of the first spring is connected to the first piston, and the other end is connected to the bottom of the first piston hole. The extrusion block is arranged on the opposite side of the first spring, and one end of the extrusion block is connected to the first piston, and the other end passes through the upper die base and extends beyond the outside of the bottom plane of the upper die base.

[0009] Furthermore, the length of the protruding portion of the extrusion block is greater than the length of the protruding portion of the bending driving foot.

[0010] Furthermore, the upper mold base includes a first upper mold body and a second upper mold body, the first upper mold body is overlapped and connected above the second upper mold body, and the first upper mold body and the second upper mold body are overlapped and connected to form two complete first piston holes, and a flange seat is installed on the top of the first upper mold body.

[0011] Furthermore, a mold cavity is formed between the two fixed mold bodies, and two parallel guide slides are laid on the bottom of the mold cavity. The two movable mold bodies are movably installed on the guide slides. The demolding auxiliary mechanism includes a push cylinder and a drive block. The push cylinder is installed at the bottom of the lower mold base, and the push cylinder is installed vertically upward. The drive block is connected to the piston rod end of the push cylinder. The drive block is set at a position between the two movable mold bodies, and the drive block acts on the two movable mold bodies at the same time.

[0012] Furthermore, the driving block is provided with two symmetrical active inclined planes, and the two movable mold bodies are connected to a passive block. The passive block is provided with a transmission inclined plane, and the two transmission inclined planes respectively contact the two active inclined planes. The upward movement of the driving block can drive the two movable mold bodies to perform synchronous divergent motion.

[0013] Furthermore, the demolding auxiliary mechanism also includes two elastic contraction elements, the lower mold base is provided with two symmetrically arranged second piston holes, the second piston holes are opened horizontally, and the two elastic contraction elements are correspondingly installed in the two second piston holes, the elastic contraction element includes a push rod, a second piston and a second spring, the second piston is matched and movably installed in the second piston hole, the second spring and the push rod are respectively installed and connected to the two sides of the second piston, one end of the push rod passes through the fixed mold body and blocks the movement path of the movable mold body, the second piston hole is open on one side, and a sealing plate is installed at the open end of the second piston hole.

[0014] A method for processing special-shaped purlins is implemented using a processing mold for special-shaped purlins for aluminum veneer curtain walls, comprising the following steps:

[0015] (a) Activate the demoulding auxiliary mechanism to make the two movable molds fit together with the corresponding fixed molds to form two bending channels;

[0016] (b) Lay the pre-cut aluminum plate flat and install it on the top of the lower mold base;

[0017] (c) Start the upper die base to descend vertically. The two bending drive feet of the upper die base push the bent aluminum plate. The bent portion of the aluminum plate slides into the bending channel. Under the push of the bending drive feet, the sliding portion of the aluminum plate gradually enters the arc section of the bending channel. The bending drive feet squeeze the sliding portion of the aluminum plate into a curled edge that matches the arc section.

[0018] (d) Start the upper die base to rise vertically, so that the two bending drive feet are out of the bending channel;

[0019] (e) Start the demoulding auxiliary mechanism again to separate the two movable molds from the corresponding fixed molds. The two movable molds move toward each other, so that the two curling edges of the purlin product are completely separated from the arc section of the bending channel, and the purlin product is directly lifted up and taken out.

[0020] The beneficial effects of the present invention are:

[0021] 1. The present invention is designed with two symmetrical bending channels on the lower die base. The two bending drive feet installed on the upper die base can push the aluminum plate to slide into the bending channels. The arc section at the end of the bending channel forms an arc-shaped curling effect of the aluminum plate. The present invention can simultaneously process two symmetrical curling edges, and the entire special-shaped purlin can be formed by one mold closing. The present invention has the advantages of high processing efficiency and good processing effect.

[0022] 2. The present invention is designed to install two movable molds in the lower mold base. The two movable molds can shrink and move closer to each other. After the two movable molds shrink and move closer, they can leave space for the purlin curling to move upward. This design solves the problem of upward extraction and demoulding of special-shaped purlin products. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 Schematic diagram of the structure of a processing mold for special-shaped purlins for aluminum single-plate curtain walls in this embodiment before mold closing;

[0024] Figure 2 Schematic diagram of the structure of a processing mold for special-shaped purlins for aluminum single-plate curtain walls in this embodiment when the mold is closed;

[0025] Figure 3 This is a schematic structural diagram of the lower mold base in this embodiment when the product is demoulded;

[0026] Figure 4 Schematic diagram of the three-dimensional structure of the lower die base in this embodiment;

[0027] Figure 5 This is a three-dimensional appearance drawing of a special-shaped purlin.

[0028] Figure markings: upper die base 1, bending drive foot 11, foot handle 111, foot head 112, pressure plate element 12, extrusion block 121, first piston 122, first spring 123, first upper die body 13, flange seat 131, second upper die body 14, first piston hole 141, foot groove 142, lower die base 2, bending channel 21, inclined section 211, arc section 212, shallow groove 22, fixed die body 23, die cavity 231, guide slide rail 232, second piston hole 233, movable die body 24, passive block 241, transmission inclined surface 242, demoulding auxiliary mechanism 3, push cylinder 31, drive block 32, active inclined surface 321, elastic contraction element 33, push rod 331, second piston 332, second spring 333, sealing plate 334. DETAILED DESCRIPTION

[0029] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0030] like Figure 1-Figure 4 The processing mold of the special-shaped purlin for the aluminum single-plate curtain wall shown in the figure comprises an upper mold base 1 and a lower mold base 2. The lower mold base 2 is fixedly installed on the workbench table. The upper mold base 1 is connected to the lifting drive mechanism. The lifting drive mechanism for mold clamping is an existing conventional equipment and will not be introduced here. The upper mold base 1 can move vertically up and down. The present invention is designed to install two symmetrically arranged bending drive feet 11 at the bottom of the upper mold base 1. The bending drive feet 11 are rotatably installed and can flip over. The top of the lower mold base 2 is provided with two symmetrically arranged bending drive feet 11. The bending channel 21 is set in a one-to-one correspondence with the bending driving foot 11. The bending driving foot 11 can be inserted into the bending channel 21 when it goes down. A shallow groove 22 is opened on the top of the lower die base 2. The depth of the shallow groove 22 is slightly larger than the thickness of the aluminum plate. The aluminum plate is cut into a size that fits the shallow groove 22. The flat aluminum plate is positioned and paved in the shallow groove 22. The aluminum plate covers the top of the bending channel 21. The bending driving foot 11 of the upper die base 1 maintains a natural drooping state under the action of its own gravity. Since the aluminum plate surface is thin, it is easy to be deformed by force. Therefore, after the upper die base 1 moves vertically downward, the aluminum plate can be partially pressed into the bending channel 21 through the bending driving foot 11. The bending channel 21 is provided with an arc section 212. The bending channel 21 also includes an inclined section 211. The inclined section 211 is connected to the top opening of the bending channel 21. The arc section 212 is connected to the end of the inclined section 211. Under the top movement of the bending driving foot 11, the pressed part of the aluminum plate slides and deforms along the inclined section 211 until it enters the arc section 212. The bending driving foot 11 includes a foot head 112, which is round. The foot head 112 is in arc shape, and its size matches the arc section 212 of the bending channel 21. The foot head 112 contacts the pressed portion of the aluminum plate to push the aluminum plate to slide (because the bending driving foot 11 can rotate, the bending driving foot 11 can push the aluminum plate to slide and deform in the bending channel 21 until it finally enters the arc section 212). After the pressed portion of the aluminum plate enters the arc section 212, it is squeezed by the foot head 112 and the arc section 212 to form an arc-shaped curling shape. Since there are two sets of bending driving feet 11 and bending channels 21, it can be made into a shape like this Figure 5The two symmetrical arc-shaped curling edges of the purlin shown are completed after the upper mold base 1 and the lower mold base 2 are closed. However, after the upper mold base 1 moves upward, the two curling edges of the purlin will be stuck in the two bending channels 21 of the lower mold base 2 (mainly stuck in the arc section 212). Therefore, the purlin product still has the problem of demolding and removing. In order to solve the above problem, the present invention designs the lower mold base 2 to include two symmetrically arranged fixed mold bodies 23, and two symmetrically arranged movable mold bodies 24 are movably installed between the two fixed mold bodies 23. The movable mold bodies 24 and the fixed mold bodies 23 are matched one by one (matched according to the principle of proximity). The movable mold bodies 24 and the fixed mold bodies 23 of the same matching group can be assembled to form a bending channel 21. During the production of purlins, the movable mold bodies 24 and the fixed mold bodies 23 of the same matching group are matched in pairs to form two bending channels 21 to meet the curling requirements. In order to meet the edge pressing requirements, the present invention opens the arc segment 212 on the movable die 24. After the purlin production is completed, the two movable die bodies 24 move closer to each other, so that the two arc segments 212 are separated from the two curling edges of the purlin, leaving space for upward extraction of the purlin, so that the purlin product can be smoothly extracted for demoulding. The present invention is equipped with a demoulding auxiliary mechanism 3 on the lower die base 2, and the demoulding auxiliary mechanism 3 is transmission-connected to the two movable die bodies 24. The demoulding auxiliary mechanism 3 can control the two movable die bodies 24 to move relative to or away from each other (relative movement can bring them closer and shrink, and away movement can be spliced ​​with the fixed die body 23). The special-shaped purlin processing mold of the present invention is reasonably designed to meet the requirements of purlin curling processing operations, and can complete the same curling on both sides at one time, so that the special-shaped purlin product is formed in one time, which has the advantages of high operating efficiency and good processing quality.

[0031] like Figure 1 and Figure 2 As shown, the bending driving foot 11 also includes a foot handle 111, and two symmetrically arranged foot grooves 142 are provided at the bottom of the upper mold base 1. The two bending driving feet 11 are respectively installed in the two foot grooves 142, and the bending driving foot 11 is rotatably installed in the foot groove 142 through the foot handle 111. The foot head 112 of the bending driving foot 11 droops beyond the bottom plane of the upper mold base 1, so that when the mold is closed, the bending driving foot 11 can enter the bending channel 21. One side of the foot groove 142 is vertical, and the other side of the foot groove 142 is provided with a rotation space for the bending driving foot 11. The vertical side of the foot groove 142 is designed to prevent the bending driving foot 11 from rotating outward. Under the above design conditions, the bending driving foot 11 can only rotate inward, that is, the two bending driving feet 11 can flip toward the center line of the mold, so that the two bending driving feet 11 can slide into the arc section 212 space at the same time.

[0032] Before the bending driving foot 11 bends the aluminum plate, the non-pressed part of the aluminum plate needs to be firmly fixed, so as to ensure the forming effect of the aluminum plate. Figure 1 and Figure 2As shown, the upper die base 1 is designed to be equipped with two symmetrically arranged pressure plate elements 12, which are arranged between the two bending drive feet 11. The middle part of the aluminum plate is a non-pressed part and does not need to be deformed. The pressure plate element 12 just presses and fixes this part. Two vertically arranged first piston holes 141 are provided in the upper die base 1. The two pressure plate elements 12 are respectively installed in the two first piston holes 141. The pressure plate element 12 includes an extrusion block 121, a first piston 122 and a first spring 123. The first piston 122 is matched and installed in the first piston hole 141. The first piston 122 can move along the length direction of the first piston hole 141. One end of the first spring 123 is connected to the first piston 122, and the other end is connected to the bottom of the first piston hole 141. The extrusion block 1 21 is arranged on the opposite side of the first spring 123, one end of the extrusion block 121 is connected to the first piston 122, and the other end extends beyond the bottom plane of the upper die base 1 after passing through the upper die base 1. The extrusion block 121 is arranged corresponding to the movable die body 24. As the upper die base 1 descends, the extrusion block 121 contacts the aluminum plate and clamps the aluminum plate between the extrusion block 121 and the movable die body 24 to fix it. As the upper die base 1 descends, the first spring 123 is compressed, and the clamping force formed by the extrusion block 121 becomes larger and larger to meet production requirements. The present invention designs the length of the excess part of the extrusion block 121 to be greater than the length of the excess part of the bending drive foot 11, that is, the extrusion block 121 contacts the aluminum plate before the bending drive foot 11, so there is a fixed clamping force on the aluminum plate before the bending drive foot 11 contacts the aluminum plate.

[0033] like Figure 1 and Figure 2 As shown, in order to solve the installation problem of the pressure plate element 12, the present invention designs the upper mold base 1 to include a first upper mold body 13 and a second upper mold body 14. The first upper mold body 13 is superimposed and connected above the second upper mold body 14. The first upper mold body 13 and the second upper mold body 14 are fixedly connected by bolts and can be disassembled and separated. The first upper mold body 13 and the second upper mold body 14 are both designed with a part of the first piston hole 141. The first upper mold body 13 and the second upper mold body 14 are superimposed and connected to form two complete first piston holes 141. When the first upper mold body 13 and the second upper mold body 14 are separated, the pressure plate element 12 can be installed first, and then installed to form the entire upper mold base 1. In this way, the problem of disassembly and assembly of the pressure plate element 12 can be solved. A flange seat 131 is installed on the top of the first upper mold body 13. The flange seat 131 is used to connect the lifting drive mechanism for mold closing.

[0034] like Figure 1-Figure 4As shown, a mold cavity 231 is formed between the two fixed mold bodies 23, and two parallel guide rails 232 (T-shaped rails can be used) are laid at the bottom of the mold cavity 231. The two movable mold bodies 24 are movably installed on the guide rails 232. The two ends of the guide rails 232 are respectively connected to the two fixed mold bodies 23, so that the movable mold body 24 can move close to the fixed mold body 23 or move away from the fixed mold body 23. The demoulding auxiliary mechanism 3 includes a push cylinder 31 and a driving block 32. The push cylinder 31 is installed at the bottom of the lower mold base 2. The push cylinder 31 is installed vertically upward. The driving block 32 is connected to the piston rod end of the push cylinder 31. The push cylinder 31 is hydraulically driven. The extension and retraction of the piston rod of the push cylinder 31 can form a vertical lifting movement of the driving block 32. The driving block 32 is arranged between the two movable mold bodies 24. Position, the driving block 32 acts on the two mobile mold bodies 24 at the same time to drive the two mobile mold bodies 24 to move synchronously, and two symmetrical active inclined surfaces 321 are provided on the driving block 32. The two mobile mold bodies 24 are connected to the passive block 241. The two mobile mold bodies 24 install the passive block 241 toward the driving block 32, and a transmission inclined surface 242 is provided on the passive block 241. The two transmission inclined surfaces 242 respectively contact the two active inclined surfaces 321. The driving block 32 is pushed upward by extending the piston rod of the push cylinder 31. In this process, the two mobile mold bodies 24 are driven to do synchronous divergence movement through the cooperation of the active inclined surface 321 and the transmission inclined surface 242. The two mobile mold bodies 24 can be driven to move closer to their corresponding fixed mold bodies 23 until they are completely aligned with the fixed mold body 23. The two parts are fully assembled to form two bending channels 21 for production use. After the bending channel 21 is formed, the push cylinder 31 needs to maintain pressure all the time to ensure the smooth completion of the curling operation (so a hydraulic push cylinder 31 is used). The demoulding auxiliary mechanism 3 also includes two elastic contraction elements 33. The lower die base 2 is provided with two symmetrically arranged second piston holes 233. The second piston hole 233 is opened horizontally. The second piston hole 233 is opened at the position of the fixed die body 23. The two elastic contraction elements 33 are correspondingly installed in the two second piston holes 233. The elastic contraction element 33 includes a push rod 331, a second piston 332 and a second spring 333. The second piston 332 is matched and movably installed in the second piston hole 233. The second spring 333 and the push rod 331 are respectively installed The second piston hole 233 is open on one side, and a sealing plate 334 is installed at the open end of the second piston hole 233. The sealing plate 334 is designed to seal the open end of the second piston hole 233. The elastic contraction element 33 is installed through the open end of the second piston hole 233. When the movable mold body 24 approaches the fixed mold body 23, the second spring 333 is compressed and the push rod 331 is also retracted into the fixed mold body 23. After the purlin is processed and formed, the piston rod of the push cylinder 31 is retracted to drive the driving block 32 downward. The two movable mold bodies 24 lose the outward expansion pushing force. Under the action of the restoring force of the second spring 333, the push rod 331 extends.The two movable molds 24 are pushed together to move toward each other. After the two movable molds 24 are brought together, the purlin curling edge is completely separated from the arcuate section 212 of the movable mold 24. The upward extraction movement of the purlin product is no longer restricted by interference, so the purlin product can be smoothly demolded. Before the next purlin is produced, the two bending channels 21 can be restored and reassembled. To ensure the smooth pushing and approaching of the movable molds 24, multiple elastic contraction elements 33 evenly distributed along a straight line can be designed and installed on each side of the fixed mold 23. Generally, 2-3 are the optimal number.

[0035] A method for processing special-shaped purlins is implemented using a processing mold for special-shaped purlins for aluminum veneer curtain walls, comprising the following steps:

[0036] (a) Start the demoulding auxiliary mechanism 3, and use the push cylinder 31 to drive the driving block 32 upward, so that the two movable mold bodies 24 move away from each other, and the two movable mold bodies 24 are assembled with the corresponding fixed mold bodies 23 to form two bending channels 21;

[0037] (b) Flatten the pre-cut aluminum plate and install it on the top of the lower die base 2, specifically in the shallow groove 22. The size of the aluminum plate is adapted to the shallow groove 22.

[0038] (c) The upper die base 1 is started to descend vertically. The pressure plate element 12 of the upper die base 1 first contacts the aluminum plate. Then, the two bending driving feet 11 of the upper die base 1 push the aluminum plate to bend the aluminum plate. The bent portion of the aluminum plate slides into the bending channel 21. Under the pushing of the bending driving feet 11, the sliding portion of the aluminum plate gradually enters the arc section 212 of the bending channel 21. The bending driving feet 11 squeeze the sliding portion of the aluminum plate into a curled shape that matches the arc section 212.

[0039] (d) Start the upper die base 1 to rise vertically, so that the two bending driving feet 11 are separated from the bending channel 21;

[0040] (e) Start the demoulding auxiliary mechanism 3 again, use the push cylinder 31 to actively drive the driving block 32 downward, and use the elastic contraction element 33 to push the two movable molds 24 to separate the movable molds 24 from the corresponding fixed molds 23. The two movable molds 24 move closer to each other, so that the two curling edges of the purlin are completely separated from the arc section 212 of the bending channel 21, and the purlin is directly lifted up and taken out.

[0041] Repeat the above steps to carry out continuous purlin production. The present invention can complete the molding of two curling edges in one mold closing, has the advantages of reasonable design and convenient demoulding, and can well meet the production requirements of special-shaped purlin products.

[0042] The above description is merely a preferred embodiment of the present invention. The scope of protection of the present invention is not limited to the above embodiment. All technical solutions based on the concept of the present invention are within the scope of protection of the present invention. It should be noted that for those skilled in the art, various improvements and modifications that do not depart from the principles of the present invention should also be considered within the scope of protection of the present invention.

Claims

1. A processing mold for special-shaped purlins for aluminum single-plate curtain walls, characterized in that: The invention comprises an upper die base (1) and a lower die base (2), wherein two symmetrically arranged bending driving feet (11) are installed at the bottom of the upper die base (1), and the bending driving feet (11) are rotatably installed. Two symmetrically arranged bending channels (21) are opened on the top of the lower die base (2), and the bending channels (21) are arranged in a one-to-one correspondence with the bending driving feet (11). A flat aluminum plate is laid on the top of the lower die base (2), and after the upper die base (1) moves vertically downward, the aluminum plate is partially pressed into the bending channel (21) by the bending driving feet (11), and the bending channel (21) is provided with an arc section (21). 12), the pressed-in portion of the aluminum plate is formed into an arc-shaped curling edge in the arc section (212), the lower die base (2) includes two symmetrically arranged fixed dies (23), two symmetrically arranged movable dies (24) are movably installed between the two fixed dies (23), the movable dies (24) and the fixed dies (23) are matched in a one-to-one correspondence, and the movable dies (24) and the fixed dies (23) of the same matching group can be assembled to form a bending channel (21), and the lower die base (2) is installed with a demoulding auxiliary mechanism (3), and the demoulding auxiliary mechanism (3) is transmission-connected to the two movable dies (24).

2. The processing mold for special-shaped purlins for aluminum single-plate curtain wall according to claim 1, characterized in that: The bending channel (21) includes an inclined section (211), the inclined section (211) is connected to the top opening of the bending channel (21), the arc section (212) is connected to the end of the inclined section (211), and the arc section (212) is opened on the movable mold body (24). The bending driving foot (11) includes a foot handle (111) and a foot head (112). The bottom of the upper mold base (1) is provided with two symmetrically arranged foot grooves (142). The two bending driving feet (11) are respectively installed in two foot grooves (142), and the bending driving foot (11) is rotatably installed in the foot groove (142) through the foot handle (111). The foot head (112) of the bending driving foot (11) hangs down beyond the bottom plane of the upper mold base (1), and the foot head (112) is arc-shaped. The size of the foot head (112) matches the arc section (212) of the bending channel (21), and the foot groove (142) is provided with a rotational movement space for the bending driving foot (11).

3. The processing mold for special-shaped purlins for aluminum single-plate curtain wall according to claim 1, characterized in that: A shallow groove (22) is provided on the top of the lower die base (2), and a flat aluminum plate is positioned and paved in the shallow groove (22).

4. The processing mold for special-shaped purlins for aluminum single-plate curtain wall according to claim 1, characterized in that: The upper die base (1) is provided with two symmetrically arranged pressure plate elements (12), the pressure plate element (12) being arranged between the two bending drive feet (11), the upper die base (1) being provided with two vertically arranged first piston holes (141), the two pressure plate elements (12) being respectively installed in the two first piston holes (141), the pressure plate element (12) comprising an extrusion block (121), a first piston (122) and a first spring (123), the first piston (122) The first piston (122) is matched and installed in the first piston hole (141), and the first piston (122) can move along the length direction of the first piston hole (141). One end of the first spring (123) is connected to the first piston (122), and the other end is connected to the bottom of the first piston hole (141). The extrusion block (121) is arranged on the opposite side of the first spring (123), and one end of the extrusion block (121) is connected to the first piston (122), and the other end passes through the upper die base (1) and extends beyond the outside of the bottom plane of the upper die base (1).

5. The processing mold for special-shaped purlins for aluminum single-plate curtain wall according to claim 4, characterized in that: The length of the protruding portion of the extrusion block (121) is greater than the length of the protruding portion of the bending drive foot (11).

6. The processing mold for special-shaped purlins for aluminum single-plate curtain wall according to claim 4, characterized in that: The upper mold base (1) includes a first upper mold body (13) and a second upper mold body (14), wherein the first upper mold body (13) is superimposed and connected to the top of the second upper mold body (14), and the first upper mold body (13) and the second upper mold body (14) are superimposed and connected to form two complete first piston holes (141), and a flange seat (131) is connected and installed on the top of the first upper mold body (13).

7. The processing mold for special-shaped purlins for aluminum single-plate curtain wall according to claim 1, characterized in that: A mold cavity (231) is formed between the two fixed mold bodies (23), and two parallel guide rails (232) are laid on the bottom of the mold cavity (231). The two movable mold bodies (24) are movably installed on the guide rails (232). The demoulding auxiliary mechanism (3) includes a push cylinder (31) and a drive block (32). The push cylinder (31) is installed at the bottom of the lower mold base (2). The push cylinder (31) is installed vertically upward. The drive block (32) is connected to the piston rod end of the push cylinder (31). The drive block (32) is located between the two movable mold bodies (24). The drive block (32) acts on the two movable mold bodies (24) at the same time.

8. The processing mold for special-shaped purlins for aluminum single-plate curtain wall according to claim 7, characterized in that: The driving block (32) is provided with two symmetrical active inclined surfaces (321), and the two movable mold bodies (24) are both connected to a passive block (241). The passive block (241) is provided with a transmission inclined surface (242), and the two transmission inclined surfaces (242) are respectively in contact with the two active inclined surfaces (321). The upward movement of the driving block (32) can drive the two movable mold bodies (24) to perform synchronous divergent motion.

9. The processing mold for special-shaped purlins for aluminum single-plate curtain wall according to claim 1, characterized in that: The demoulding auxiliary mechanism (3) further includes two elastic contraction elements (33), the lower mold base (2) is provided with two symmetrically arranged second piston holes (233), the second piston holes (233) are opened transversely, and the two elastic contraction elements (33) are correspondingly installed in the two second piston holes (233), the elastic contraction element (33) includes a push rod (331), a second piston (332) and a second spring (333), the second piston (332) is matched and movably installed in the second piston hole (233), the second spring (333) and the push rod (331) are respectively correspondingly installed and connected to the two sides of the second piston (332), one end of the push rod (331) passes through the fixed mold body (23) and blocks the movement path of the movable mold body (24), the second piston hole (233) is open on one side, and a sealing plate (334) is installed at the open end of the second piston hole (233).

10. A method for processing special-shaped purlins, which is realized by using a processing mold for special-shaped purlins for aluminum veneer curtain walls according to any one of claims 1 to 9, characterized in that: The steps include: (a) activating the demoulding auxiliary mechanism (3) to cause the two movable mold bodies (24) to be joined with the corresponding fixed mold bodies (23) to form two bending channels (21); (b) Lay the pre-cut aluminum plate flat and install it on the top of the lower die base (2); (c) starting the upper die base (1) to descend vertically, and the two bending driving feet (11) of the upper die base (1) push the bent aluminum plate, and the bent portion of the aluminum plate slides into the bending channel (21). Under the pushing of the bending driving feet (11), the sliding portion of the aluminum plate gradually enters the arc section (212) of the bending channel (21), and the bending driving feet (11) squeezes the sliding portion of the aluminum plate into a curling shape that matches the arc section (212); (d) starting the upper die base (1) to rise vertically, so that the two bending driving feet (11) are separated from the bending channel (21); (e) The demoulding auxiliary mechanism (3) is activated again to separate the two movable mold bodies (24) from the corresponding fixed mold bodies (23). The two movable mold bodies (24) move toward each other, so that the two curling edges of the purlin product are completely separated from the arc section (212) of the bending channel (21), and the purlin product is directly lifted up and taken out.

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