Anti-pulling deformation feeding hot press forming machine

Abstract

The application discloses a kind of anti-pulling deformation feeding hot-press forming machine, it includes: base;Discharge assembly, it is installed to base front end;Feeding device, it includes feeding slide, first drive module and first, second pressing mechanism;Intermediate cutting device, it is arranged between first, second pressing mechanism, it includes cutting material carrier, support cross bar and first lifting module, cutting tool and second lifting module;Hot-press forming device, it is used to carry out hot-press forming sound film to strip material;Cold air cooling device, it is arranged in the side of hot-press forming device and is used to generate cold air to hot-press forming sound film to cool sound film quickly;Synchronous material pulling device, it includes material pulling slide and third pressing mechanism, material pulling slide is connected with first drive module or feeding slide by linkage structure to realize synchronous movement with feeding slide;Cutting device, it includes cutting carrier, cutting knife installed to the rear side of cutting carrier and third lifting module for driving cutting knife lifting.

Description

Technical Field

[0001] This invention relates to the field of automated manufacturing technology, and specifically to a heat-pressing forming machine for producing sound diaphragms that prevents stretching and deformation. Background Technology

[0002] A loudspeaker typically consists of a diaphragm, a voice coil, and a magnet. When an audio current flows through the voice coil, the voice coil is subjected to the magnetic force of the magnet, causing it to move repeatedly. This causes the diaphragm to vibrate in a piston-like manner, which in turn causes the surrounding air to vibrate and produce sound.

[0003] Chinese invention patent application CN108419201A discloses an automated feeding, compression molding, and cutting machine for sound diaphragms. The machine includes a feeding assembly, a compression molding assembly, a right-angle connecting plate, a connecting plate, and a pulling assembly. The compression molding assembly is vertically arranged, and the feeding and pulling assemblies are respectively located at both ends of the compression molding assembly. The feeding and pulling assemblies are connected by the right-angle connecting plate, and the pulling and compression molding assemblies are connected by the connecting plate. The feeding assembly includes a material tray assembly, a first support leg, a feeding base, a first guide rod, and a clamping assembly. The feeding base is horizontally arranged, the clamping assembly is located at one end of the upper plane of the feeding base, and the material tray assembly is located at the other end of the upper plane of the feeding base. The first guide rod is vertically arranged between the material tray assembly and the clamping assembly, and the first support leg is vertically arranged at the four corners of the bottom of the feeding base. This automated feeding, compression molding, and cutting machine for sound diaphragms effectively reduces labor intensity and improves production efficiency by placing the feeding and pulling assemblies at both ends of the compression molding assembly. By incorporating a telescopic cylinder in the clamping assembly, demolding and mold insertion are achieved, effectively improving production efficiency. Connecting the clamping and cutting assembly to the sliding assembly, and installing blades in the clamping and cutting assembly, allows the assembly to clamp the diaphragm and pull the material under the influence of the sliding assembly. Simultaneously, during the return stroke, the blades on the clamping and cutting assembly cut the diaphragm, effectively improving both pulling and cutting efficiency.

[0004] However, the aforementioned automated feeding, compression molding, and cutting machine for sound diaphragms has the following shortcomings: 1. The aforementioned automated feeding, compression molding, and cutting machine for sound membranes does not pre-cut the material. As a result, when the compression molding component heat-presses the material to form the sound membrane, the heat-pressed part of the material (i.e., the sound membrane part) will deform due to heat, which will pull other parts of the material (i.e., the outer part of the sound membrane) and cause wrinkles or deformation. This may cause the material to become skewed, which may lead to skewed phenomena when pulling the material later, thus affecting the working quality of the entire equipment.

[0005] 2. In the aforementioned automated feeding, compression molding, and cutting machine for sound membranes, after the sound membrane is hot-pressed into a sound membrane using a compression molding component, the sound membrane needs to be cooled and set before the material is pulled out. However, since the automated feeding, compression molding, and cutting machine for sound membranes does not have a cooling mechanism to actively cool and set the sound membrane, but instead uses natural cooling and setting, it requires a certain amount of waiting time. When molding multiple sound membranes, it requires a lot of waiting time, which greatly affects the working efficiency of the entire equipment.

[0006] In view of this, the inventor proposes the following technical solution to resolve the above-mentioned technical problems. Summary of the Invention

[0007] The purpose of this invention is to overcome the shortcomings of the prior art and provide a hot pressing forming machine for preventing stretching and deformation.

[0008] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: An anti-stretch deformation feeding hot pressing forming machine includes: a machine base; a feeding assembly installed at the front end of the machine base; a feeding device including a feeding slide mounted on the machine base and carrying strip material, a first driving module for driving the feeding slide to slide, a first pressing mechanism mounted on the feeding slide and for pressing the strip material, and a second pressing mechanism located at the rear; an intermediate cutting device disposed between the first pressing mechanism and the second pressing mechanism, including a cutting platform, a support crossbar mounted at the rear of the cutting platform, a first lifting module for driving the support crossbar to rise and fall, a cutter disposed above the cutting platform and / or the support crossbar for cutting the strip material in the middle without cutting the sides to form a cutting hole in the middle of the strip material, and a drive mechanism for driving the cutter. The device includes: a second lifting module for lifting; a hot pressing forming device mounted on the base and located beside the intermediate cutting device, used for hot pressing forming a sound diaphragm from strip materials that are not cut on both sides of the intermediate cutting device; a cold air cooling device located beside the hot pressing forming device, used to generate cold air to blow onto the hot-pressed sound diaphragm for rapid cooling; a synchronous material pulling device, including a material pulling slide for carrying the strip material and a third pressing mechanism mounted on the material pulling slide for pressing the strip material, the material pulling slide being connected to the first drive module or the feeding slide through a linkage structure to achieve synchronous movement with the feeding slide; and a cutting device including a cutting platform, a cutting blade mounted on the rear side of the cutting platform and cutting along the cutting hole of the strip material to cut off the connecting parts on both sides and form a single sound diaphragm semi-finished product, and a third lifting module for driving the cutting blade to lift.

[0009] Furthermore, in the above technical solution, a first base plate is provided on the machine base, and a movable first adjusting frame and a first adjusting mechanism for driving the first adjusting frame to move relative to the machine base to adjust the position relative to the machine base are provided on the first base plate. The first adjusting frame is mounted on the first base plate through a first guide rail pair. The feeding slide, the second pressing mechanism and the intermediate cutting device are all mounted on the first adjusting frame. The first adjusting mechanism includes a first rack mounted on the lower end of the first adjusting frame, a first handwheel rotatably mounted on the first base plate and a first gear fixedly mounted on the first handwheel and meshing with the first rack.

[0010] Furthermore, in the above technical solution, the cutting platform is mounted on the upper end of the first adjusting frame via the second guide rail pair; and the first adjusting frame is also provided with a second adjusting mechanism for adjusting the relative position of the cutting platform. The second adjusting mechanism includes a second rack mounted on the lower end of the cutting platform, a second handwheel rotatably mounted on the first adjusting frame, and a second gear fixedly mounted on the second handwheel and meshing with the second rack.

[0011] Furthermore, in the above technical solution, the first adjusting frame is provided with a material guiding and pressing mechanism facing the feeding device. The material guiding and pressing mechanism includes a first frame, multiple guide rods installed on one side of the first frame and spaced apart, a first guide block and a second guide block installed on the guide rods in an adjustable relative position, and a pressing head installed in the first frame via a second cylinder for pressing the strip material. The first pressing mechanism includes a first L-shaped guide block and a second L-shaped guide block installed on the feeding slide in an adjustable relative position, a pressing block installed on the rear side of the first L-shaped guide block and the second L-shaped guide block, and a first cylinder for driving the pressing block to rise and fall. A first extending carrier plate is also provided on one side of the second pressing mechanism. The rear end of the first extending carrier plate extends to the hot pressing upper mold or hot pressing lower mold close to the hot pressing forming device.

[0012] Furthermore, in the above technical solution, the first lifting module includes a third frame mounted on the cutting platform, a first lifting seat mounted on the third frame or the cutting platform via a first guide rod, and a first lifting cylinder mounted on the third frame for driving the first lifting seat to rise and fall. The cutter is mounted on the first lifting seat, wherein the cutter has a triangular blade in the middle, and a first stop and a second stop are provided on both sides of the cutter to prevent the blade from completely cutting the strip material. The lower ends of the first stop and the second stop are flush and protrude beyond the lower end of the blade. The second lifting module includes a stop block fixed to the rear end of the cutting platform, a guide frame passing through the stop block and slidable up and down, and a third cylinder mounted on the third frame and connected to the guide frame to drive the guide frame to slide up and down. The support crossbar is fixed in the guide frame and located above the stop block.

[0013] Furthermore, in the above technical solution, the hot pressing forming device includes a support frame mounted on a machine base, a hot pressing upper mold mounted in the support frame via a first guide structure, a first electric cylinder assembly mounted on the support frame and used to cooperate with the first guide structure to drive the hot pressing upper mold to move up and down, a hot pressing lower mold mounted in the support frame via a second guide structure and adapted to the hot pressing upper mold, and a second electric cylinder assembly mounted under the support frame and used to cooperate with the second guide structure to drive the hot pressing lower mold to move up and down, wherein the second electric cylinder assembly is located inside the machine base.

[0014] Furthermore, in the above technical solution, the cold air cooling device includes: a first base, with a first mounting cavity at its front end and two mutually separated water inlet and outlet cavities for cooling water to pass through at its rear end, and the rear end face of the first base is provided with water inlet connectors and water outlet connectors respectively connecting the water inlet and outlet cavities; a first refrigeration module, including a plurality of first semiconductor refrigeration chips and a first cooling seat in contact with the cooling surface of the first semiconductor refrigeration chips, the hot surface of the first semiconductor refrigeration chips being in contact with the inner wall of the first mounting cavity, the first cooling seat being placed inside the first mounting cavity, and the first cooling seat having a plurality of spaced-apart first cooling sheets, with a first cooling gap formed between adjacent first cooling sheets; a fan, mounted on the first base, generating airflow to blow into the first mounting cavity and the first cooling seat inside the first mounting cavity; and a second base, with a second fan at its lower end connecting to the first mounting cavity. The mounting cavity has two parallel and interconnected first and second water passages at its upper end for cooling water to pass through. The first and second water passages are respectively connected to the water inlet and water outlet. The lower end of the second seat has an air outlet that connects to the second mounting cavity and blows cold air onto the thermoformed diaphragm for cooling. The second cooling module includes a plurality of second semiconductor cooling chips and a second cooling seat that contacts the cooling surface of the second semiconductor cooling chips. The hot surface of the second semiconductor cooling chips is in contact with the inner wall of the second mounting cavity. The second cooling seat is placed inside the second mounting cavity and has a plurality of spaced second cooling sheets, with a second cooling gap formed between adjacent second cooling sheets. The lifting module is connected to the first seat to control the lifting of the first seat. The fixing module is located outside the lifting module and is detachably fixed to the outside of the thermoforming device.

[0015] Furthermore, in the above technical solution, the synchronous material pulling device is provided with a second extension plate on the side of the hot pressing upper mold or hot pressing lower mold of the hot pressing forming device, which can swing downward to increase the space for replacing the hot pressing upper mold or hot pressing lower mold. The front end of the second extension plate extends to the hot pressing upper mold or hot pressing lower mold of the hot pressing forming device.

[0016] Furthermore, in the above technical solution, a hinge seat is provided on one side of the synchronous material pulling device; the end of the second extended carrier plate away from the hot pressing upper die is rotatably connected to the hinge seat, and a fifth cylinder is provided on the hinge seat. The piston rod of the fifth cylinder is connected to a transverse pull rod, which abuts against the lower surface of the end of the second extended carrier plate near the hot pressing upper die; the hinge seat is also provided with a slidable positioning pin. After the positioning pin is inserted into the hinge seat and into place, the positioning pin is magnetically fixed to the hinge seat, and the positioning pin also abuts against the lower end face of the second extended carrier plate to support the second extended carrier plate; when it is necessary to swing the second extended carrier plate down to increase the space for replacing the hot pressing upper die or the hot pressing lower die, the positioning pin is pulled outward relative to the hinge seat, so that the positioning pin no longer supports the second extended carrier plate. At the same time, the fifth cylinder drives the transverse pull rod to move down, so that the end of the second extended carrier plate near the hot pressing upper die swings downward to increase the space for replacing the hot pressing upper die or the hot pressing lower die.

[0017] Furthermore, in the above technical solution, the structure of the third pressing mechanism is the same as that of the first pressing mechanism; the structure of the third lifting module is the same as that of the second lifting module; a second base plate is provided on the machine base, and a movable second adjusting frame and a third adjusting mechanism for driving the second adjusting frame to move relative to the machine base to adjust the position relative to the machine base are provided on the second base plate. The second adjusting frame is mounted on the second base plate via a third guide rail pair; the synchronous pulling device and the cutting device are both mounted on the second adjusting frame; the cutting platform is mounted on the upper end of the second adjusting frame via a fourth guide rail pair; and a fourth adjusting mechanism for adjusting the relative position of the cutting platform is also provided on the second adjusting frame; the cutting device also includes a fourth pressing mechanism disposed above the cutting platform.

[0018] By adopting the above technical solution, the present invention has the following beneficial effects compared with the prior art: 1. This invention employs a first and a third pressing mechanism for dual-point pressing and pulling of the material to achieve feeding. This feeding is stable and avoids skewing, resulting in a very smooth feeding process and preventing inaccurate feeding length. Simultaneously, it ensures the strip material is positioned more stably in the thermoforming device, which then thermoforms the strip material into a diaphragm, guaranteeing product quality. Before the thermoforming device thermoforms the strip material into a diaphragm, the first and second pressing mechanisms simultaneously press the strip material. An intermediate cutting device located between the first and second pressing mechanisms drives the cutter downwards via a second lifting module to cut the strip material in the middle without cutting the sides, creating a cutting hole in the middle of the strip material. The supporting crossbar also supports the strip material, improving the quality of the cutter's cutting of the strip material. During the later stage, when the thermoforming device thermoforms the part of the diaphragm that needs to be thermoformed, the part of the strip material being thermoformed will deform due to heat. At this time, since the front and rear ends of the part of the strip material that needs to be thermoformed are cut to form cutting holes, it will not pull other parts of the strip material (i.e., the outer part of the diaphragm) to cause wrinkles or deformation. This will prevent the strip material from becoming skewed, and will also prevent skew when the strip material is pulled and fed later, thus ensuring the working quality of the entire equipment.

[0019] 2. After the hot pressing forming device hot presses the strip material into a sound diaphragm, the first pressing mechanism and the third pressing mechanism simultaneously press the strip material and simultaneously pull and feed it. As a result, the first pressing mechanism pulls the part of the strip material before the cutting hole is formed before the sound diaphragm is formed, and its stress is relatively large. On the other hand, the third pressing mechanism pulls the part of the strip material after the sound diaphragm is formed, and its stress is relatively small. In this way, the strip material can be stably pulled and fed without deviation or deformation, and the strip material can be prevented from being pulled apart (especially the parts on both sides of the cutting hole).

[0020] 3. The present invention also provides a cold air cooling device next to the hot pressing molding device. The cold air generated by the cold air cooling device blows cold air onto the hot-pressed diaphragm to cool the diaphragm quickly, realizing active cooling. This can reduce the cooling time and greatly improve the working efficiency of the present invention. Attached Figure Description

[0021] Figure 1 This is a perspective view of the present invention; Figure 2 This is a partial perspective view of the present invention; Figure 3 This is a perspective view of a portion of the present invention from another angle; Figure 4 This is a perspective view of the cold air cooling device in this invention; Figure 5This is a cross-sectional view of a partial structure of the cold air cooling device in this invention; Figure 6 This is a cross-sectional view of a partial structure of the cold air cooling device in this invention from another perspective; Figure 7 This is an exploded view of a partial structure of the cold air cooling device in this invention; Figure 8 This is a schematic diagram of the flow of the cold air cooling device in this invention; Figure 9 This is a perspective view of the intermediate cutting device in this invention; Figure 10 This is an assembly diagram of the feeding device and the intermediate cutting device in this invention; Figure 11 This is an assembly diagram of the feeding device and the intermediate cutting device from another perspective in this invention. Figure 12 This is an assembly diagram of the synchronous material pulling device and the cutting device from a first-view perspective in this invention; Figure 13 This is an assembly diagram of the synchronous material pulling device and the cutting device from a second perspective in this invention; Figure 14 This is a third-view assembly diagram of the synchronous material pulling device and the cutting device in this invention; Figure 15 This is an assembly diagram of the second extended carrier plate in this invention; Figure 16 This is an assembly diagram of the hot pressing forming device and the strip material in this invention. Detailed Implementation

[0022] The present invention will be further described below with reference to specific embodiments and accompanying drawings.

[0023] See Figure 1-16 As shown, a heat pressing forming machine for preventing stretching and deformation is provided, which includes: a base 1, a feeding assembly 2, a feeding device 3, an intermediate cutting device 4, a heat pressing forming device 5, a cold air cooling device 6, a synchronous feeding device 7, and a cutting device 8.

[0024] The feeding assembly 2 is installed at the front end of the base 1; the feeding assembly 2 is provided with a whole roll of strip material 10 and can rotate freely to achieve feeding. The structure of the feeding assembly 2 is conventional technology and will not be described in detail here.

[0025] The feeding device 3 includes a feeding slide 31 mounted on the base 1 and carrying the strip material 10, a first driving module 32 for driving the feeding slide 31 to slide, a first pressing mechanism 33 mounted on the feeding slide 31 for pressing the strip material 10, and a second pressing mechanism 34 located at the rear. The intermediate cutting device 4 is located between the first pressing mechanism 33 and the second pressing mechanism 34, and includes a cutting platform 41, a support crossbar 42 mounted at the rear of the cutting platform 41, a first lifting module 43 for driving the support crossbar 42 to rise and fall, a cutter 44 located above the cutting platform 41 and / or the support crossbar 42 for cutting the strip material 10 in the middle without cutting the sides to form a cutting hole 101 in the middle of the strip material 10, and a second lifting module 45 for driving the cutter 44 to rise and fall. The hot pressing forming device 5 is mounted on the base 1 and positioned... The intermediate cutting device 4 is located beside the intermediate cutting device 5 and is used to hot-press the strip material 10 that is not cut on both sides of the intermediate cutting to form a sound diaphragm 100; the cold air cooling device 6 is located beside the hot pressing device 5 and is used to generate cold air to blow onto the hot-pressed sound diaphragm 100 to quickly cool the sound diaphragm 100; the synchronous pulling device 7 includes a pulling slide 71 for carrying the strip material and a third pressing mechanism 72 installed on the pulling slide 71 for pressing the strip material 10. The pulling slide 71 is connected to the first driving module 32 or the feeding slide 31 through the linkage structure 73 to achieve synchronous movement with the feeding slide 31; the cutting device 8 includes a cutting platform 81, a cutting blade 82 installed on the rear side of the cutting platform 81 and cutting along the cutting hole 101 of the strip material to cut off the connecting part on both sides and form a single sound diaphragm semi-finished product, and a third lifting module 83 for driving the cutting blade 82 to rise and fall.In practical operation, the present invention pulls out the roll of strip material 10 on the feeding assembly 2. When it is necessary to pull the strip material 10 to achieve feeding, the first pressing mechanism 33 cooperates with the feeding slide 31 to press the strip material 10, and at the same time, the third pressing mechanism 72 cooperates with the pulling slide 71 to press the strip material 10. Then, the first driving module 32 drives the feeding slide 31 to slide. The pulling slide 71 is also linked with the feeding slide 31 through the linkage structure 73 to perform double-point pressing and pulling to achieve feeding. The feeding is stable and there is no skewing problem, making the entire feeding process very smooth and preventing inaccurate feeding length. At the same time, it can also ensure that the strip material 10 is flatter. The material is stably positioned in the hot pressing forming device 5, and the hot pressing forming device 5 hot presses the strip material 10 to form a sound diaphragm, ensuring product quality. Before the hot pressing forming device 5 hot presses the strip material 10 to form the sound diaphragm 100, the first pressing mechanism 33 and the second pressing mechanism 34 simultaneously press the strip material 10. The intermediate cutting device 4 located between the first pressing mechanism 33 and the second pressing mechanism 34 drives the cutter 44 to descend through the second lifting module 45 to cut the middle of the strip material 10 without cutting the sides. At this time, a cutting hole 101 is formed in the middle of the strip material 10. The support crossbar 42 can also support the strip material 10, improving the quality of the cutter 44 cutting the strip material 10. Later, when the hot pressing forming device 5 hot presses the part of the sound diaphragm 100 that needs to be hot pressed into sound diaphragm 100, the part of the strip material 10 that is hot pressed will be deformed by heat. At this time, since the front and rear ends of the part of the strip material 10 that needs to be hot pressed into sound diaphragm 100 are cut to form cutting holes 101, the other parts of the strip material 10 (i.e. the outer part of the sound diaphragm 100) will not be pulled and wrinkled or deformed. This will prevent the strip material 10 from being skewed, so that the strip material 10 will not be skewed when it is pulled and fed later, thus ensuring the working quality of the entire equipment. After the hot pressing forming device 5 hot presses the strip material 10 into a sound diaphragm 100, the first pressing mechanism 33 and the third pressing mechanism 72 simultaneously press the strip material 10 and simultaneously pull and feed it. Because the first pressing mechanism 33 pulls the portion of the strip material 10 before the cutting hole 101 is formed, it experiences greater force, while the third pressing mechanism 72 pulls the portion of the strip material 10 after the sound diaphragm 100 is formed, its force is relatively smaller. This method enables stable pulling and feeding of the strip material 10, preventing deviation and deformation, and also preventing the strip material 10 from breaking (especially the portions on both sides of the cutting hole 101). Furthermore, the present invention also provides a cold air cooling device 6 beside the hot pressing forming device 5. The cold air cooling device 6 generates cold air that blows onto the hot-pressed sound diaphragm 100 to rapidly cool it, achieving active cooling. This reduces cooling time and greatly improves the working efficiency of the present invention.

[0026] In the initial state, the strip material 10 is sequentially passed through the feeding slide 31, the first pressing mechanism 33, the cutting platform 41, the support crossbar 42, the hot pressing forming device 5, the cold air cooling device 6, the pulling slide 71, the third pressing mechanism 72, and the cutting platform 81.

[0027] The base 1 is provided with a first base plate 11, on which a movable first adjusting frame 12 and a first adjusting mechanism 13 for driving the first adjusting frame 12 to move relative to the base 1 to adjust its position relative to the base 1 are provided. The first adjusting frame 12 is mounted on the first base plate 11 via a first guide rail pair 121, allowing for stable and precise sliding. The feeding slide 31, the second pressing mechanism 34, and the intermediate cutting device 4 are all mounted on the first adjusting frame 12, thereby allowing adjustment of their positions relative to the base 1 to meet different usage requirements and making the structure of the invention more compact. The feeding slide 31 is slidably mounted on the first adjusting frame 12 via a fifth guide rail pair 311.

[0028] The first adjustment mechanism 13 includes a first rack (not shown) mounted on the lower end of the first adjustment frame 12, a first handwheel 132 rotatably mounted on the first base plate 11, and a first gear (not shown) fixedly mounted on the first handwheel 132 and meshing with the first rack (not shown). When the first handwheel 132 is rotated, the first gear and the first rack work together to drive the first adjustment frame 12 to move relative to the first base plate 11. It has a simple structure, can achieve fine adjustment, and has low cost.

[0029] The cutting platform 41 is mounted on the upper end of the first adjusting frame 12 via the second guide rail pair 411, allowing for stable and precise sliding. The first adjusting frame 12 is also equipped with a second adjusting mechanism 14 for adjusting the relative position of the cutting platform 41. The second adjusting mechanism 14 includes a second rack 141 mounted on the lower end of the cutting platform 41, a second handwheel 142 rotatably mounted on the first adjusting frame 12, and a second gear (not shown) fixedly mounted on the second handwheel 142 and meshing with the second rack 141. When the second handwheel 142 is rotated, the second gear and the second rack 141 work together to drive the cutting platform 41 to move relative to the first base plate 11 to meet different usage requirements. The mechanism is simple in structure, low in cost, and can achieve fine adjustment.

[0030] The first adjusting frame 12 is provided with a material guiding and pressing mechanism 15 facing the feeding device 3. The material guiding and pressing mechanism 15 includes a first frame 151, multiple guide rods 152 installed on one side of the first frame 151 and spaced apart, a first guide block 153 and a second guide block 154 installed on the guide rods 152 in an adjustable relative position, and a pressing head 156 installed in the first frame 151 by a second cylinder 155 for pressing the strip material 10. When the first pressing mechanism 33 and the third pressing mechanism 72 are about to release the strip material 10, the second cylinder 155 drives the pressing head 156 to press the strip material 10. In this way, after the first pressing mechanism 33 and the third pressing mechanism 72 release the strip material 10, the strip material 10 will not loosen or bulge, ensuring the quality of subsequent feeding.

[0031] The first pressing mechanism 33 includes a first L-shaped guide block 331 and a second L-shaped guide block 332 mounted on the feeding slide 31 in an adjustable relative position, a pressing block 333 mounted on the rear side of the first L-shaped guide block 331 and the second L-shaped guide block 332, and a first cylinder 334 for driving the pressing block 333 to rise and fall. The first L-shaped guide block 331 and the second L-shaped guide block 332 are spaced apart to limit the passing strip material 10, which facilitates the subsequent precise pressing of the strip material 10 by the pressing block 333, and also prevents the strip material 10 from tilting.

[0032] The second pressing mechanism 34 is also provided with a first extension carrier plate 35 on one side. The rear end of the first extension carrier plate 35 extends to the hot pressing upper mold 53 or hot pressing lower mold 56 near the hot pressing forming device 5, so that the strip material 10 can be smoothly conveyed to the hot pressing upper mold 53 or hot pressing lower mold 56, and ensure the flatness of the part of the strip material 10 hot pressed by the hot pressing upper mold 53 and hot pressing lower mold 56, which can improve the quality of the hot pressing formed sound diaphragm 100.

[0033] The first lifting module 43 includes a third frame 431 mounted on a cutting platform 41, a first lifting seat 433 mounted on the third frame 431 or the cutting platform 41 via a first guide rod 432, and a first lifting cylinder 434 mounted on the third frame 431 for driving the first lifting seat 433 to rise and fall. The cutter 44 is mounted on the first lifting seat 433. The cutter 44 has a triangular blade 441 in the middle, and the cutter 44 also has sides for preventing the blade 441 from completely cutting the strip material 10. The first stop bar 442 and the second stop bar 443 are cut off. The lower ends of the first stop bar 442 and the second stop bar 443 are flush with each other and protrude beyond the lower end of the blade 441. The second lifting module 45 includes a stop block 451 fixed to the rear end of the cutting platform 41, a guide frame 453 that passes through the stop block 451 and can slide up and down, and a third cylinder 454 that is installed on the third frame 431 and connected to the guide frame 453 to drive the guide frame 453 to slide up and down. The support crossbar 42 is fixed in the guide frame 453 and located above the stop block 451.

[0034] The hot pressing forming device 5 includes a support frame 51 mounted on the base 1, a hot pressing upper mold 53 mounted in the support frame 51 via a first guide structure 52, a first electric cylinder assembly 54 mounted on the support frame 51 and used to cooperate with the first guide structure 52 to drive the hot pressing upper mold 53 to move up and down, a hot pressing lower mold 56 mounted in the support frame 51 via a second guide structure 55 and adapted to the hot pressing upper mold 53, and a second electric cylinder assembly 57 mounted under the support frame 51 and used to cooperate with the second guide structure 55 to drive the hot pressing lower mold 56 to move up and down. The second electric cylinder assembly 57 is located inside the base 1.

[0035] The hot pressing forming device 5 is driven by a first electric cylinder assembly 54 and a second electric cylinder assembly 57. Compared with oil cylinders or pneumatic cylinders, the electric cylinder has the following advantages: it is easy to adjust the machine, reduces the number of times a wrench is used, simplifies the operation, and provides more constant pressure.

[0036] The cold air cooling device 6 includes: a first base 61, with a first mounting cavity 611 at its front end and two spaced-apart water inlet cavities 612 and 613 at its rear end for cooling water to pass through; the rear end face of the first base 61 is provided with a water inlet connector 614 and a water outlet connector 615 respectively connecting the water inlet cavities 612 and 613; and a first refrigeration module 62, which includes a plurality of first semiconductor refrigeration chips 621 and a first cooling guide seat 622 in contact with the cooling surface of the first semiconductor refrigeration chips 621. The hot surface of plate 621 is in contact with the inner wall of the first mounting cavity 611. The first cooling seat 622 is placed inside the first mounting cavity 611, and the first cooling seat 622 has multiple spaced first cooling plates 6221, with a first cooling gap formed between two adjacent first cooling plates 6221. A fan 63 is mounted on the first seat 61 and generates airflow to blow into the first mounting cavity 611 and the first cooling seat 622 inside the first mounting cavity 611. A second seat 64 has a second mounting cavity 641 at its lower end that communicates with the first mounting cavity 611. The upper end of the second base 64 is provided with two parallel and interconnected first water passage chambers 642 and second water passage chambers 643 for cooling water to pass through. The first water passage chamber 642 and the second water passage chamber 643 are respectively connected to the water inlet chamber 612 and the water outlet chamber 613. The lower end of the second base 64 is provided with an air outlet 644 that connects to the second mounting cavity 641 and blows cold air out of the hot-pressed sound diaphragm 100 for cooling. The second cooling module 65 includes a plurality of second semiconductor cooling chips 652 and a second guide that contacts the cooling surface of the second semiconductor cooling chips 652. The second cooling seat 653 has its hot surface of the second semiconductor cooling chip 652 in contact with the inner wall of the second mounting cavity 641. The second cooling seat 653 is placed inside the second mounting cavity 641 and has multiple spaced second cooling sheets 6531, with a second cooling gap formed between two adjacent second cooling sheets 6531. The lifting module 66 is connected to the first seat 61 to control the lifting of the first seat 61. The fixing module 67 is disposed outside the lifting module 66 and is detachably fixed to the outside of the thermoforming device 5.

[0037] When the cold air cooling device 6 is working, the first thermoelectric cooler 621 and the second thermoelectric cooler 652 are energized to achieve cooling, making the first cooling seat 622 and the second cooling seat 653 cold, respectively. Simultaneously, the heat generated by the first thermoelectric cooler 621 and the second thermoelectric cooler 652 is transferred to the first seat 61 and the second seat 64, respectively. Meanwhile, cooling water flows in through the inlet connector 614, passes through the inlet chamber 612, the first water passage chamber 642, the second water passage chamber 643, and the outlet chamber 613, and then flows out from the outlet connector 615. This removes heat from the first seat 61 and the second seat 64, thereby improving the cooling performance of the first thermoelectric cooler 621 and the second thermoelectric cooler 653. The cooling effect of the cooling element 652; simultaneously, the fan 63 generates airflow that blows into the first mounting cavity 611, passing through the first cooling gap formed between two adjacent first cooling elements 6221 in the first cooling seat 622, where it is cooled to form cold air. Subsequently, this cold air is blown into the second mounting cavity 661, passing through the second cooling gap formed between two adjacent second cooling elements 6621 in the second cooling seat 662, where it is cooled again to form even colder air. Finally, this cold air passes through the air outlet 644 and blows onto the thermoformed diaphragm 100, causing the diaphragm 100 to cool down rapidly and set its shape. This can greatly reduce the cooling time of the diaphragm 100, thereby improving the working efficiency of the entire device. In addition, since the airflow forms a stable and lower temperature cold air only after passing through the first cooling gap formed between two adjacent first cooling elements 6221 and the second cooling gap formed between two adjacent second cooling elements 6621, the cold air becomes gentler and will not deform the thermoformed diaphragm 100.

[0038] The first seat 61 includes a first seat body 601 and a first front plate 602 and a first rear plate 603 installed at the front and rear ends of the first seat body 601. The first front plate 602 covers the first mounting cavity 611, and the first rear plate 603 covers the water inlet cavity 612 and the water outlet cavity 613.

[0039] The second seat 64 includes a second seat body 604 and a first upper plate 605 and a first lower plate 606 installed at the front and rear ends of the second seat body 604. The first upper plate 605 covers the second mounting cavity 641, and the first lower plate 606 covers the first water passage cavity 642 and the second water passage cavity 643.

[0040] The synchronous material pulling device 7 is also provided with a second extension carrier plate 9 on the side near the hot pressing upper mold 53 or hot pressing lower mold 56 of the hot pressing forming device 5. The extension carrier plate 9 can swing downward to increase the space for changing the hot pressing upper mold 53 or hot pressing lower mold 56. The front end of the second extension carrier plate 9 extends to the hot pressing upper mold 53 or hot pressing lower mold 56 of the hot pressing forming device 5, so that the strip material 10 can be smoothly conveyed to the hot pressing upper mold 53 or hot pressing lower mold 56, and ensure the flatness of the hot pressing part of the strip material 10 by the hot pressing upper mold 53 and hot pressing lower mold 56, which can improve the quality of the hot pressing formed sound diaphragm 100. When the hot pressing molding device 5 needs to easily form sound diaphragms 100 of different sizes, it is necessary to replace the hot pressing upper mold 53 and hot pressing lower mold 56 of different sizes. The second extension carrier plate 9 can be swung downward to increase the space for replacing the hot pressing upper mold 53 or hot pressing lower mold 56, so as to replace the hot pressing upper mold 53 and hot pressing lower mold 56 of different sizes. Moreover, the second extension carrier plate 9 does not need to be disassembled for molding and installation, which increases the convenience of operation and improves work efficiency.

[0041] The specific assembly structure of the second extension carrier plate 9 is as follows: a hinge seat 91 is provided on one side of the synchronous pulling device 7; the end of the second extension carrier plate 9 away from the hot pressing upper mold 53 is rotatably connected to the hinge seat 91, a fifth cylinder 92 is provided on the hinge seat 91, the piston rod 921 of the fifth cylinder 92 is connected to a transverse pull rod 93, the transverse pull rod 93 abuts against the lower surface of the end of the second extension carrier plate 9 near the hot pressing upper mold 53; the hinge seat 91 is also provided with a slidable positioning pin block 94, after the positioning pin block 94 is inserted into the hinge seat 91 and inserted into the position, the positioning pin... Block 94 is magnetically fixed to hinge seat 91, and the positioning pin block 94 also abuts against the lower end face of the second extension carrier plate 9 to support the second extension carrier plate 9. When it is necessary to swing the second extension carrier plate 9 down to increase the space for replacing the hot pressing upper mold 53 or hot pressing lower mold 56, the positioning pin block 94 is pulled outward relative to the hinge seat 91, so that the positioning pin block 94 no longer supports the second extension carrier plate 9. At the same time, the fifth cylinder 92 drives the transverse tie rod 93 to move down, so that the end of the second extension carrier plate 9 close to the hot pressing upper mold 53 swings down to increase the space for replacing the hot pressing upper mold 53 or hot pressing lower mold 56.

[0042] The hinge seat 91 is provided with a vertical pin 911, and the positioning pin block 94 is provided with a strip groove 941. The pin 911 is inserted into the strip groove 941 so that the two can slide relative to each other. After the positioning pin block 94 is pulled outward relative to the hinge seat 91, the strip groove 941 is limited by the pin 911, which can prevent the positioning pin block 94 from disengaging from the hinge seat 91. This allows the positioning pin block 94 to be quickly inserted into the second extension plate 9 to abut against the lower end of the second extension plate 9 so that the second extension plate 9 forms a support. The operation is extremely convenient and highly efficient.

[0043] Both the positioning pin 94 and the hinge seat 91 are equipped with magnets, so that after the positioning pin 94 is inserted into the hinge seat 91, the two magnets come into contact to achieve magnetic attraction and fixation.

[0044] The structure of the third pressing mechanism 72 is the same as that of the first pressing mechanism 33; the structure of the third lifting module 83 is the same as that of the second lifting module 45; these will not be described in detail here.

[0045] The base 1 is provided with a second base plate 16, on which a movable second adjustment frame 17 and a third adjustment mechanism 18 for driving the second adjustment frame 17 to move relative to the base 1 to adjust the position relative to the base 1 are provided. The structure of the third adjustment mechanism 18 is the same as that of the first adjustment mechanism.

[0046] The second adjusting frame 17 is mounted on the second base plate 16 via the third guide rail pair 170. Both the synchronous material pulling device 7 and the cutting device 8 are mounted on the second adjusting frame 17, making the structure of the invention more compact. The material pulling slide 71 is slidably mounted on the second adjusting frame 17 via the sixth guide rail pair 710. The cutting platform 81 is mounted on the upper end of the second adjusting frame 17 via the fourth guide rail pair 810. The second adjusting frame 17 is also provided with a fourth adjusting mechanism 19 for adjusting the relative position of the cutting platform 81. The structure of the fourth adjusting mechanism 19 is the same as that of the second adjusting mechanism.

[0047] The cutting device 8 also includes a fourth pressing mechanism 84 disposed above the cutting platform 81. The fourth pressing mechanism 84 presses the strip material 10 so that the cutting blade 82 can cut more accurately along the cutting hole 101 of the strip material to cut off the connecting parts on both sides and form a single diaphragm semi-finished product.

[0048] The second adjustment frame 17 is provided with an inclined unloading plate 171 that is connected to the cutting platform 81, and a receiving box 172 is provided on the rear side of the machine base 1, which is located below the inclined unloading plate 171.

[0049] In summary, during specific operation, the present invention pulls out the roll of strip material 10 mounted on the feeding assembly 2. When it is necessary to pull the strip material 10 to achieve feeding, the first pressing mechanism 33 cooperates with the feeding slide 31 to press the strip material 10, while the third pressing mechanism 72 cooperates with the pulling slide 71 to press the strip material 10. Then, the first driving module 32 drives the feeding slide 31 to slide. The pulling slide 71 is also linked with the feeding slide 31 through the linkage structure 73 to perform double-point pressing and pulling to achieve feeding. The feeding is stable and there is no skew problem, making the entire feeding process very smooth and preventing inaccurate feeding length. At the same time, it can also ensure that the strip material 10 is pulled out. The strip material 10 is positioned more stably in the hot pressing forming device 5, and the hot pressing forming device 5 hot presses the strip material 10 to form a sound diaphragm, ensuring product quality. Before the hot pressing forming device 5 hot presses the strip material 10 to form a sound diaphragm, the first pressing mechanism 33 and the second pressing mechanism 34 simultaneously press the strip material 10. The intermediate cutting device 4 located between the first pressing mechanism 33 and the second pressing mechanism 34 drives the cutter 44 to descend through the second lifting module 45 to cut the middle of the strip material 10 without cutting the sides. At this time, a cutting hole 101 is formed in the middle of the strip material 10. The support crossbar 42 can also support the strip material 10, improving the quality of the cutter 44 cutting the strip material 10. When the hot pressing forming device 5 hot presses the part of the sound diaphragm that needs to be hot pressed into a sound diaphragm, the part of the strip material 10 that is hot-pressed will deform due to heat. At this time, since the front and rear ends of the part of the strip material 10 that needs to be hot-pressed into a sound diaphragm are cut to form cutting holes 101, the other parts of the strip material 10 (i.e. the outer part of the sound diaphragm) will not be pulled and wrinkled or deformed. This will prevent the strip material 10 from becoming skewed, and will also prevent the strip material 10 from becoming skewed when it is pulled and fed later, thus ensuring the working quality of the entire equipment. After the hot pressing forming device 5 hot presses the strip material 10 into a sound diaphragm, the first pressing mechanism 33 and the third pressing mechanism 72 simultaneously press the strip material 10 and simultaneously pull and feed it. Because the first pressing mechanism 33 pulls the portion of the strip material 10 before the cutting hole 101 is formed, it experiences greater force, while the third pressing mechanism 72 pulls the portion of the strip material 10 after the sound diaphragm is formed, its force is relatively smaller. This method enables stable pulling and feeding of the strip material 10, preventing deviation and deformation, and also preventing the strip material 10 from breaking (especially the portions on both sides of the cutting hole 101). Furthermore, the present invention also provides a cold air cooling device 6 beside the hot pressing forming device 5. The cold air cooling device 6 generates cold air that blows onto the hot-pressed sound diaphragm for rapid cooling, achieving active cooling. This reduces cooling time and greatly improves the working efficiency of the present invention.

[0050] Of course, the above description is only a specific embodiment of the present invention and is not intended to limit the scope of the present invention. All equivalent changes or modifications made to the structure, features and principles described in the claims of the present invention should be included in the scope of the claims of the present invention.

Claims

1. A hot pressing forming machine for preventing tensile deformation, characterized in that: include: Base (1); The feeding assembly (2) is installed at the front end of the base (1); The feeding device (3) includes a feeding slide (31) mounted on the base (1) and carrying the strip material (10), a first drive module (32) for driving the feeding slide (31) to slide, a first pressing mechanism (33) mounted on the feeding slide (31) and for pressing the strip material (10), and a second pressing mechanism (34) located on the rear side. The intermediate cutting device (4) is disposed between the first pressing mechanism (33) and the second pressing mechanism (34). It includes a cutting platform (41), a support crossbar (42) installed on the rear side of the cutting platform (41), a first lifting module (43) for driving the support crossbar (42) to rise and fall, a cutter (44) disposed above the cutting platform (41) and / or the support crossbar (42) for cutting the strip material (10) in the middle without cutting the two sides to form a cutting hole (101) in the middle of the strip material (10), and a second lifting module (45) for driving the cutter (44) to rise and fall. The hot pressing forming device (5) is installed on the machine base (1) and located next to the intermediate cutting device (4), and is used to hot press the strip material (10) that is not cut on both sides of the intermediate cutting to form a sound diaphragm. A cold air cooling device (6) is located next to the hot pressing molding device (5) and is used to generate cold air to blow onto the hot-pressed diaphragm to cool the diaphragm quickly. The synchronous material pulling device (7) includes a material pulling slide (71) for carrying strip material and a third pressing mechanism (72) installed on the material pulling slide (71) for pressing the strip material (10). The material pulling slide (71) is connected to the first drive module (32) or the feeding slide (31) through a linkage structure (73) to achieve synchronous movement with the feeding slide (31). The cutting device (8) includes a cutting platform (81), a cutting blade (82) mounted on the rear side of the cutting platform (81) and cutting along the cutting hole (101) of the strip material to cut off the connecting parts on both sides and form a single diaphragm semi-finished product, and a third lifting module (83) for driving the cutting blade (82) to rise and fall.

2. The anti-stretch deformation feeding hot pressing molding machine according to claim 1, characterized in that: The base (1) is provided with a first base plate (11), and the first base plate (11) is provided with a movable first adjustment frame (12) and a first adjustment mechanism (13) for driving the first adjustment frame (12) to move relative to the base (1) to adjust the position relative to the base (1). The first adjustment frame (12) is mounted on the first base plate (11) through a first guide rail pair (121). The feeding slide (31), the second pressing mechanism (34) and the intermediate cutting device (4) are all mounted on the first adjustment frame (12). The first adjustment mechanism (13) includes a first rack mounted on the lower end of the first adjustment frame (12), a first handwheel (132) rotatably mounted on the first base plate (11) and a first gear fixedly mounted on the first handwheel (132) and meshing with the first rack.

3. The anti-stretch deformation feeding hot pressing molding machine according to claim 2, characterized in that: The cutting platform (41) is mounted on the upper end of the first adjusting frame (12) via the second guide rail pair (411); and the first adjusting frame (12) is also provided with a second adjusting mechanism (14) for adjusting the relative position of the cutting platform (41). The second adjusting mechanism (14) includes a second rack (141) mounted on the lower end of the cutting platform (41), a second handwheel (142) rotatably mounted on the first adjusting frame (12), and a second gear fixedly mounted on the second handwheel (142) and meshing with the second rack (141).

4. The anti-stretch deformation feeding hot pressing molding machine according to claim 2, characterized in that: The first adjusting frame (12) is provided with a material guiding and pressing mechanism (15) facing the feeding device (3). The material guiding and pressing mechanism (15) includes a first frame (151), multiple guide rods (152) installed on one side of the first frame (151) and spaced apart, a first guide block (153) and a second guide block (154) installed on the guide rods (152) in an adjustable relative position, and a pressing head (156) installed in the first frame (151) through a second cylinder (155) for pressing the strip material (10); the first pressing mechanism (33) The second pressing mechanism (34) includes a first L-shaped guide block (331) and a second L-shaped guide block (332) mounted on the feeding slide (31) in an adjustable relative position, a pressing block (333) mounted on the rear side of the first L-shaped guide block (331) and the second L-shaped guide block (332), and a first cylinder (334) for driving the pressing block (333) to rise and fall; a first extension carrier plate (35) is also provided on one side of the second pressing mechanism (34), the rear end of which extends to the hot pressing upper mold (53) or hot pressing lower mold (56) near the hot pressing forming device (5).

5. A hot pressing forming machine for preventing tensile deformation feeding according to any one of claims 1-4, characterized in that: The first lifting module (43) includes a third frame (431) mounted on a cutting platform (41), a first lifting seat (433) mounted on the third frame (431) or the cutting platform (41) via a first guide rod (432), and a first lifting cylinder (434) mounted on the third frame (431) for driving the first lifting seat (433) to lift. The cutter (44) is mounted on the first lifting seat (433). The cutter (44) has a triangular blade (441) in the middle, and the cutter (44) also has sides for preventing the blade (441) from completely cutting the strip material (10). The first stop (442) and the second stop (443) are cut off. The lower ends of the first stop (442) and the second stop (443) are flush with each other and protrude beyond the lower end of the blade (441). The second lifting module (45) includes a stop (451) fixed to the rear end of the cutting platform (41), a guide frame (453) that passes through the stop (451) and can slide up and down, and a third cylinder (454) that is installed on the third frame (431) and connected to the guide frame (453) to drive the guide frame (453) to slide up and down. The support crossbar (42) is fixed in the guide frame (453) and located above the stop (451).

6. A hot pressing forming machine for preventing tensile deformation feeding according to any one of claims 1-4, characterized in that: The hot pressing forming device (5) includes a support frame (51) mounted on the base (1), a hot pressing upper mold (53) mounted in the support frame (51) via a first guide structure (52), a first electric cylinder assembly (54) mounted on the support frame (51) and used to cooperate with the first guide structure (52) to drive the hot pressing upper mold (53) to move up and down, a hot pressing lower mold (56) mounted in the support frame (51) via a second guide structure (55) and adapted to the hot pressing upper mold (53), and a second electric cylinder assembly (57) mounted under the support frame (51) and used to cooperate with the second guide structure (55) to drive the hot pressing lower mold (56) to move up and down. The second electric cylinder assembly (57) is placed inside the base (1).

7. A hot pressing forming machine for preventing tensile deformation feeding according to any one of claims 1-4, characterized in that: The cold air cooling device (6) includes: The first seat (61) has a first mounting cavity (611) at its front end and two water inlet cavities (612) and water outlet cavities (613) at its rear end, which are separated from each other and allow cooling water to pass through. The rear end face of the first seat (61) is provided with a water inlet connector (614) and a water outlet connector (615) that respectively connect the water inlet cavity (612) and the water outlet cavity (613). The first cooling module (62) includes a plurality of first semiconductor cooling chips (621) and a first cooling seat (622) in contact with the cooling surface of the first semiconductor cooling chips (621). The hot surface of the first semiconductor cooling chip (621) is attached to the inner wall of the first mounting cavity (611). The first cooling seat (622) is placed in the first mounting cavity (611) and has a plurality of spaced first cooling chips (6221). A first cooling gap is formed between two adjacent first cooling chips (6221). A fan (63) is mounted on a first seat (61) and generates airflow that blows into a first mounting cavity (611) and a first cooling seat (622) inside the first mounting cavity (611). The second seat (64) has a second mounting cavity (641) at its lower end that connects to the first mounting cavity (611), and two parallel and connected first water passage cavities (642) and second water passage cavities (643) at its upper end for cooling water to pass through. The first water passage cavities (642) and the second water passage cavities (643) are respectively connected to the water inlet cavity (612) and the water outlet cavity (613). The lower end of the second seat (64) has an air outlet (644) that connects to the second mounting cavity (641) and blows cold air out to cool the hot-pressed sound diaphragm. The second cooling module (65) includes a plurality of second semiconductor cooling chips (652) and a second cooling seat (653) in contact with the cooling surface of the second semiconductor cooling chips (652). The hot surface of the second semiconductor cooling chip (652) is in contact with the inner wall of the second mounting cavity (641). The second cooling seat (653) is placed in the second mounting cavity (641) and has a plurality of spaced second cooling chips (6531). A second cooling gap is formed between two adjacent second cooling chips (6531). A lifting module (66) is connected to the first seat (61) to control the lifting of the first seat (61); The fixed module (67) is located outside the lifting module (66) and is fixedly installed on the outside of the thermoforming device (5) in a detachable manner.

8. A hot pressing forming machine for preventing tensile deformation feeding according to any one of claims 1-4, characterized in that: The synchronous material pulling device (7) is provided with a second extension plate (9) on the side of the hot pressing upper mold (53) or hot pressing lower mold (56) of the hot pressing forming device (5), which can swing downward to increase the space for replacing the hot pressing upper mold (53) or hot pressing lower mold (56). The front end of the second extension plate (9) extends to the hot pressing upper mold (53) or hot pressing lower mold (56) of the hot pressing forming device (5).

9. The anti-stretch deformation feeding hot pressing molding machine according to claim 8, characterized in that: The synchronous feeding device (7) is provided with a hinge seat (91) on one side; the end of the second extension plate (9) away from the hot pressing upper die (53) is rotatably connected to the hinge seat (91), and a fifth cylinder (92) is provided on the hinge seat (91). The piston rod (921) of the fifth cylinder (92) is connected to a transverse pull rod (93), and the transverse pull rod (93) abuts against the lower surface of the end of the second extension plate (9) near the hot pressing upper die (53); the hinge seat (91) is also provided with a slidable positioning pin (94). After the positioning pin (94) is inserted into the hinge seat (91) and into place, the positioning pin (94) and the hinge seat (91) are connected. 91) The positioning pin (94) is fixed by magnetic attraction and also abuts against the lower end face of the second extension plate (9) to support the second extension plate (9); when it is necessary to swing the second extension plate (9) down to increase the space for replacing the hot pressing upper mold (53) or hot pressing lower mold (56), the positioning pin (94) is pulled out relative to the hinge seat (91) so that the positioning pin (94) no longer supports the second extension plate (9), and at the same time, the fifth cylinder (92) drives the transverse tie rod (93) to move down so that the end of the second extension plate (9) near the hot pressing upper mold (53) swings down to increase the space for replacing the hot pressing upper mold (53) or hot pressing lower mold (56).

10. A hot pressing forming machine for preventing tensile deformation feeding according to any one of claims 1-4, characterized in that: The structure of the third pressing mechanism (72) is the same as that of the first pressing mechanism (33); the structure of the third lifting module (83) is the same as that of the second lifting module (45); a second base plate (16) is provided on the base (1), and a movable second adjusting frame (17) and a third adjusting mechanism (18) for driving the second adjusting frame (17) to move relative to the base (1) to adjust the position relative to the base (1) are provided on the second base plate (16). The second adjusting frame (17) is connected to the third guide. The rail pair (170) is installed on the second base plate (16); the synchronous material pulling device (7) and the cutting device (8) are both installed on the second adjusting frame (17); the cutting platform (81) is installed on the upper end of the second adjusting frame (17) through the fourth guide rail pair (810); and the second adjusting frame (17) is also provided with a fourth adjusting mechanism (19) for adjusting the relative position of the cutting platform (81); the cutting device (8) also includes a fourth pressing mechanism (84) provided above the cutting platform (81).

Images