Plastic vacuum forming machine capable of enhancing cooling performance

Abstract

The invention relates to the technical field of plastic vacuum forming machines, in particular to a plastic vacuum forming machine capable of enhancing cooling performance, which comprises a machine base, a traction structure, an adjusting structure, a plastic vacuum forming structure, an abutting structure, a fixing structure, a cooling structure, a swinging structure, a heating box and a guide plate, the cooling structure comprises a supporting rod, a first connecting pipe and an atomizing nozzle, the swinging structure can drive the first connecting pipe to swing through the driving assembly, the spraying range of cooling liquid is enlarged, and uneven cooling is avoided; the machine base is further provided with a plastic uptake structure and a fixing structure, the plastic uptake structure can achieve plastic uptake forming of a plastic mold, the fixing structure can rapidly complete mold disassembly and assembly through a screw rod, a movable plate, an abutting block and other components, and a plurality of bolts do not need to be screwed in a narrow space; meanwhile, the traction structure and the guide plate on the machine base facilitate movement of the plastic film, the abutting structure can fix the plastic film during plastic uptake, and the forming stability is improved; the product quality is effectively improved, and the mold overhaul and maintenance efficiency is improved.

Description

Technical Field

[0001] This invention relates to the field of vacuum forming machine technology, specifically a vacuum forming machine with enhanced cooling performance. Background Technology

[0002] A vacuum forming machine is a molding device that utilizes the thermoplastic properties of thermoplastic sheets. Through heating and softening, the sheet is vacuum-formed and tightly adhered to a mold cavity. After cooling and setting, a plastic product of a specific shape is obtained. It is widely used in food packaging, electronic component trays, medical device housings, and daily necessities containers. In the vacuum forming process, after the plastic sheet is softened in the heating zone, it needs to be vacuum-formed on the mold. However, the freshly formed plastic product is still in a softened state due to residual heat, and natural cooling is time-consuming. Therefore, the industry commonly uses a method of spraying coolant onto the surface of the plastic product after forming. This forced heat exchange achieves rapid cooling and setting, ensuring the product's shape stability and dimensional accuracy.

[0003] Traditional vacuum forming machines typically have coolant nozzles installed at fixed angles with a fixed spray range, which can easily lead to cooling blind spots. These areas cannot be fully covered by coolant, resulting in slower cooling and uneven shrinkage of different parts of the product. This can cause localized deformation and increase the defect rate. Furthermore, existing molds often rely on multiple bolts to be fixed to the mounting platform. Since the mounting platform is usually located inside the vacuum forming machine, the operating space is limited. Each disassembly or assembly requires the operator to reach into the machine with their hands or body to tighten the bolts one by one, which is not only time-consuming and laborious but also poses a risk of damaging the equipment. This results in low efficiency for mold maintenance and repair. Summary of the Invention

[0004] The purpose of this invention is to provide a vacuum forming machine with enhanced cooling performance to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: A vacuum forming machine with enhanced cooling performance includes a base, a cooling structure on the base, and a swing structure on the cooling structure; The cooling structure includes support rods and first connecting pipes. Two support rods are fixedly connected to the base, and multiple first connecting pipes are rotatably connected between the two support rods. Multiple atomizing nozzles are installed on the first connecting pipes. The support rods are provided with a swing structure, which includes a fourth guide seat and a slide rod. Two fourth guide seats are fixedly connected to one of the support rods, and the same slide rod is slidably connected to the two fourth guide seats. A first connecting plate is fixedly connected to the first connecting pipe, and multiple abutments corresponding one-to-one with the first connecting plate are fixedly connected to the slide rod. The abutments extend into the interior of the adjacent first connecting plate. A second connecting plate is fixedly connected to the slide rod. A fourth drive assembly is installed on one of the support rods. A turntable is fixedly connected to the output end of the fourth drive assembly, and a drive shaft is fixedly connected to the turntable, extending into the interior of the second connecting plate.

[0006] In order to increase the spray range of the coolant, as a preferred embodiment of the present invention, the plurality of first connecting pipes are linearly and equidistantly distributed, and the plurality of atomizing nozzles located on the same first connecting pipe are linearly and equidistantly distributed.

[0007] In order to facilitate the entry of coolant into the interior of the multiple first connecting pipes, as a preferred embodiment of the present invention: a second connecting pipe is fixedly connected to another support rod, and one end of the multiple first connecting pipes is rotatably connected to the same second connecting pipe.

[0008] In order to collect the atomized coolant, as a preferred embodiment of the present invention, the top sides of the two support rods are fixedly connected to the same baffle, and the baffle is fixedly connected to a flange.

[0009] To enable the traction of the plastic mold, in a preferred embodiment of the present invention: multiple guide plates are fixedly connected to the machine base; a heating box is installed on the top side of the machine base; a traction structure is provided on the machine base; the traction structure includes a first guide seat and a slide seat; the first guide seats are fixedly connected to both sides of the machine base; a slide seat is slidably connected to the first guide seat; a first drive assembly is installed on the first guide seat; the output end of the first drive assembly is fixedly connected to the slide seat; a crossbar is fixedly connected to the slide seat; one of the two crossbars is rotatably connected to a long shaft; the bottom end of one of the long shafts is provided with another long shaft; the other long shaft is rotatably connected to the machine base; a rubber sleeve is fitted over the outside of the long shaft; and two short shafts are rotatably connected to each of the two crossbars. Two additional short shafts are respectively provided at the bottom end of the machine, and the two additional short shafts are rotatably connected to the machine base. The short shafts are covered with rubber sleeves, and gears are fixedly connected to the short shafts. Gears are fixedly connected to both ends of the long shaft. The two gears on two adjacent short shafts mesh with each other, and the two gears at one adjacent end of the two long shafts mesh with each other. Two first synchronous pulleys are fixedly connected to the two additional short shafts rotatably connected to the machine base, and two additional first synchronous pulleys are fixedly connected to both ends of the other long shaft rotatably connected to the machine base. The same synchronous belt is wound around the two first synchronous pulleys on the same side of the machine base. Two second drive assemblies are installed on the machine base, and the output end of the second drive assembly is fixedly connected to a second synchronous pulley. Two synchronous belts are wound around the two second synchronous pulleys.

[0010] In order to adjust the tension of the timing belt, as a preferred embodiment of the present invention: the base is provided with an adjustment structure, the adjustment structure includes a connecting frame and a moving shaft, a connecting frame is fixedly connected to both sides of the base, the moving shaft is provided through the connecting frame, a pressure roller is rotatably connected to the moving shaft, the two pressure rollers respectively abut against the two timing belts, and a first nut is threadedly connected to the moving shaft, the first nut abuts against the connecting frame.

[0011] In order to enable vacuum forming of plastic molds, as a preferred embodiment of the present invention: the machine base is provided with a vacuum forming structure, the vacuum forming structure includes a second guide seat and a first guide post, four second guide seats are fixedly connected inside the machine base, the first guide post is slidably connected to the second guide seat, the top ends of the four first guide posts are fixedly connected to the same moving frame, two third drive components are installed on the machine base, the output end of the third drive component is fixedly connected to the bottom end of the moving frame, a support plate is fixedly connected to the top end of the moving frame, the mold is installed on the support plate, multiple ventilation holes are provided on the support plate, and a ventilation pipe is fixedly connected to one side of the moving frame.

[0012] To fix the plastic mold during the thermoforming process, a preferred embodiment of the present invention is provided: the movable frame is provided with a pressing structure, the pressing structure including a third guide seat and a sliding column. Two third guide seats are fixedly connected to both sides of the movable frame, and sliding columns are slidably connected to the third guide seats. The top ends of the two sliding columns are fixedly connected to the same pressure plate. A limiting plate is provided through the two sliding columns near their bottom ends. A second nut is threaded onto the sliding column. One side of the limiting plate abuts against the third guide seat, and the other side of the limiting plate abuts against the second nut. A spring is sleeved on the outside of the sliding column. One end of the spring abuts against the third guide seat, and the other end of the spring abuts against the pressure plate.

[0013] To enable rapid assembly and disassembly of the mold, a preferred embodiment of the present invention is provided as follows: the movable frame is provided with a fixing structure, the fixing structure includes a rotating rod and a screw rod, the screw rod is rotatably connected to the movable frame, two movable plates are threadedly connected to the screw rod, two second guide posts are fixedly connected inside the movable frame, two movable plates are slidably connected to the two second guide posts, two abutments are fixedly connected to the movable plates, four inserts are fixedly connected to the bottom end of the mold, the four inserts engage with the same bearing plate, the inserts are provided with grooves, and one end of the abutment extends into the interior of the adjacent groove and abuts against the insert.

[0014] In order to facilitate the rotation of the screw, as a preferred embodiment of the present invention: a rotating rod is fixedly connected to the screw, the two threads on the screw have opposite directions, the groove is generally trapezoidal, and the cross-section of the bottom end of the insert is trapezoidal.

[0015] The beneficial effects of this invention are: The cooling structure enables the spraying of coolant. During the spraying of coolant by multiple atomizing nozzles, the first connecting pipe can be oscillated by the swinging structure. The multiple atomizing nozzles will oscillate together with the first connecting pipe, thereby increasing the spraying range and making it easier for the coolant to be sprayed more evenly on the surface of the molded plastic film. This avoids uneven distribution of coolant that could lead to localized deformation of the product, thus ensuring product quality.

[0016] The vacuum forming structure allows for the vacuum forming of plastic molds, and the fixed structure enables quick assembly and disassembly of the molds, avoiding the need to reach into the confined space of the equipment to twist multiple bolts for mold assembly and disassembly, thus facilitating mold inspection and maintenance.

[0017] 3) The traction structure and guide plate facilitate the movement of the plastic film, while the pressure structure can fix the plastic film during the vacuum forming process, thereby preventing the plastic film from shifting position and improving the stability of the plastic film vacuum forming process. Attached Figure Description

[0018] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0019] Figure 1 A schematic diagram of the overall structure provided by the present invention; Figure 2 for Figure 1 The enlarged schematic diagram of part A shown below; Figure 3 This is a schematic diagram of the connection structure between the support rod and the first connecting pipe of the present invention; Figure 4 for Figure 3 The enlarged schematic diagram of section B is shown below; Figure 5 This is a schematic diagram of the connection structure between the second guide seat and the first guide post of the present invention. Figure 6 for Figure 5 The enlarged schematic diagram of section C is shown below; Figure 7 for Figure 5 The enlarged schematic diagram of part D is shown below; Figure 8 This is a schematic diagram of the connection structure between the rotating rod and the screw rod of the present invention; Figure 9 This is a schematic diagram of the connection structure between the moving shaft and the pressure roller of the present invention.

[0020] In the diagram: 1. Base; 2. Traction structure; 201. First guide seat; 202. Slide; 203. First drive assembly; 204. Crossbar; 205. Long shaft; 206. Rubber sleeve; 207. Gear; 208. Short shaft; 209. First synchronous pulley; 210. Synchronous belt; 211. Second synchronous pulley; 212. Second drive assembly; 3. Adjustment structure; 301. Connecting frame; 302. Moving shaft; 303. Pressure roller; 304. First nut; 4. Vacuum forming structure; 401. Second guide seat; 402. First guide post; 403. Moving frame; 404. Third drive assembly; 405. Bearing plate; 406. Vent hole; 407. Mold; 408. Vent pipe; 5. Pressing structure; 501. Third guide... 502. Sliding column; 503. Spring; 504. Pressure plate; 505. Second nut; 506. Limiting plate; 6. Fixing structure; 601. Rotating rod; 602. Screw; 603. Second guide column; 604. Moving plate; 605. Abutment block; 606. Insert block; 607. Groove; 7. Cooling structure; 701. Support rod; 702. First connecting pipe; 703. Atomizing nozzle; 704. Second connecting pipe; 705. Baffle; 706. Flange; 8. Swinging structure; 801. Fourth guide seat; 802. Sliding rod; 803. Abutment shaft; 804. First connecting plate; 805. Second connecting plate; 806. Drive shaft; 807. Turntable; 808. Fourth drive assembly; 9. Heating box; 10. Guide plate. Detailed Implementation

[0021] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0022] Please see Figure 1-9 The present invention provides a technical solution: a vacuum forming machine with enhanced cooling performance, including a base 1, a cooling structure 7 on the base 1, and a swing structure 8 on the cooling structure 7; Cooling structure 7 includes a support rod 701 and a first connecting pipe 702. Two support rods 701 are fixedly connected to the base 1. Multiple first connecting pipes 702 are rotatably connected between the two support rods 701. Multiple atomizing nozzles 703 are installed on the first connecting pipes 702. A swing structure 8 is provided on the support rod 701. The swing structure 8 includes a fourth guide seat 801 and a slide rod 802. Two fourth guide seats 801 are fixedly connected to one of the support rods 701. The same slide rod 802 is slidably connected to the two fourth guide seats 801. A first connecting plate 804 is fixedly connected to the tube 702. A plurality of abutments 803 corresponding one-to-one with the first connecting plate 804 are fixedly connected to the slide rod 802. The abutments 803 extend into the interior of the adjacent first connecting plate 804. A second connecting plate 805 is fixedly connected to the slide rod 802. A fourth drive assembly 808 is installed on one of the support rods 701. A turntable 807 is fixedly connected to the output end of the fourth drive assembly 808. A drive shaft 806 is fixedly connected to the turntable 807. The drive shaft 806 extends into the interior of the second connecting plate 805.

[0023] In practical use, after the plastic film is vacuum-formed, coolant can be sprayed from multiple atomizing nozzles 703. During the spraying process, the fourth drive assembly 808 (preferably a motor) can be activated. The output end of the fourth drive assembly 808 drives the turntable 807 to rotate, and the turntable 807 drives the drive shaft 806 to move. The movement of the drive shaft 806 will drive the second connecting plate 805 to reciprocate. The reciprocating movement of the second connecting plate 805 will drive the slide rod 802 to reciprocate. The two fourth guide seats 801 can guide the movement of the slide rod 802. The reciprocating movement of the slide rod 802 will drive multiple abutment shafts 803 to reciprocate. The reciprocating movement of the multiple abutment shafts 803 will cause multiple second connecting pipes 704 to swing back and forth simultaneously. The multiple atomizing nozzles 703 will swing together with the second connecting pipes 704, thereby increasing the spraying range and making it easier for the coolant to be sprayed more evenly on the surface of the formed plastic film. This avoids uneven distribution of coolant and the occurrence of local deformation of the product, thus ensuring the quality of the product.

[0024] Multiple first connecting pipes 702 are linearly and equidistantly distributed, and multiple atomizing nozzles 703 located on the same first connecting pipe 702 are linearly and equidistantly distributed.

[0025] In practical use, the swinging of each first connecting pipe 702 will drive the swinging of multiple atomizing nozzles 703. The simultaneous swinging of multiple first connecting pipes 702 will drive the simultaneous swinging of multiple sets of atomizing nozzles 703, thereby increasing the spraying range and facilitating comprehensive spraying of the formed plastic film.

[0026] Another support rod 701 is fixedly connected to a second connecting pipe 704, and one end of a plurality of first connecting pipes 702 is rotatably connected to the same second connecting pipe 704.

[0027] In practical use, the external coolant delivery pipe can be connected to one end of the second connecting pipe 704. When coolant needs to be sprayed, the coolant first enters the interior of the second connecting pipe 704, then enters the interior of multiple first connecting pipes 702 from the interior of the second connecting pipe 704, and finally is sprayed out from multiple atomizing nozzles 703.

[0028] The top sides of the two support rods 701 are fixedly connected to the same baffle 705, and the baffle 705 is fixedly connected to the flange 706.

[0029] In practical use, the flange 706 at the end of the baffle 705 can be easily connected to the negative pressure device. Then, during the cooling process, the negative pressure device can be activated, and the floating objects in the cooled coolant can be sucked away from the inside of the baffle 705, thereby preventing the floating objects from drifting into the surrounding environment and causing pollution, thus improving the environmental friendliness of the use.

[0030] Multiple guide plates 10 are fixedly connected to the base 1. A heating box 9 is installed on the top side of the base 1. A traction structure 2 is provided on the base 1. The traction structure 2 includes a first guide seat 201 and a slide seat 202. The first guide seat 201 is fixedly connected to both sides of the base 1. The slide seat 202 is slidably connected to the first guide seat 201. A first drive assembly 203 is installed on the first guide seat 201. The output end of the first drive assembly 203 is fixedly connected to the slide seat 202. A crossbar 204 is fixedly connected to the slide seat 202. One of the long shafts 205 is rotatably connected between the two crossbars 204. The bottom end of the one long shaft 205 is provided with another long shaft 205. The other long shaft 205 is rotatably connected to the base 1. A rubber sleeve 206 is fitted on the outside of the long shaft 205. Two short shafts 208 are rotatably connected to the two crossbars 204 respectively. The bottom ends of the two short shafts 208 are provided with two more short shafts 208 respectively. All short shafts 208 are rotatably connected to the base 1. A rubber sleeve 206 is fitted over the outside of each short shaft 208. Gears 207 are fixedly connected to each short shaft 208. Gears 207 are fixedly connected to both ends of each long shaft 205. The two gears 207 on two adjacent short shafts 208 mesh with each other. The two gears 207 on one adjacent end of two long shafts 205 mesh with each other. Two first synchronous pulleys 209 are fixedly connected to two other short shafts 208 rotatably connected to the base 1. Two other first synchronous pulleys 209 are fixedly connected to both ends of another long shaft 205 rotatably connected to the base 1. The same synchronous belt 210 is wound around the two first synchronous pulleys 209 on the same side of the base 1. Two second drive assemblies 212 are installed on the base 1. The output end of the second drive assembly 212 is fixedly connected to a second synchronous pulley 211. Two synchronous belts 210 are wound around the two second synchronous pulleys 211.

[0031] In practical use, after a section of plastic film is vacuum-formed, two second drive components 212 (preferably servo motors) can be activated simultaneously. The rotation of the output end of the second drive component 212 will drive the second synchronous pulley 211 to rotate. The rotation of the second synchronous pulley 211 will drive the synchronous belt 210 to move. The movement of the synchronous belt 210 will drive the two first synchronous pulleys 209 to rotate. The rotation of one of the first synchronous pulleys 209 will drive the short shaft 208 to rotate, and the rotation of the other first synchronous pulley 209 will drive the long shaft 205 to rotate. Since a gear is fixedly connected to the short shaft 208... 207, and the two gears 207 on the two adjacent short shafts 208 mesh with each other. Meanwhile, gears 207 are fixedly connected to both ends of the long shaft 205, and the two gears 207 on the adjacent ends of the long shaft 205 mesh with each other. Therefore, when the two second synchronous pulleys 211 rotate simultaneously, the four short shafts 208 and the two long shafts 205 will rotate simultaneously. The rotation of both the short shafts 208 and the long shafts 205 will drive the rubber sleeves 206 to rotate. Since the rubber sleeves 206 are in contact with the plastic film, the relative rotation of two adjacent rubber sleeves 206 will affect the plastic film. The film is conveyed a specified distance. Because there is space between the relative short axes 208, it will not obstruct the plastic film after vacuum forming. Simultaneously, after one section of plastic film is vacuum-formed, the plastic mold can be automatically conveyed before the next section is vacuum-formed, thus achieving continuous vacuum forming of the plastic film and effectively improving the efficiency of vacuum forming production. A heating box 9 is installed to heat the plastic mold before vacuum forming, and during the movement, the two edges of the plastic film are located inside the guide plate 10, facilitating the guidance of the plastic film's movement. When it is necessary to lay plastic... When the film is laid, two first drive components 203 (preferably cylinders) can be activated simultaneously. The output end of the first drive component 203 extends and drives the slide 202 to slide on the first guide seat 201. The movement of the slide 202 drives the crossbar 204 to move. The simultaneous movement of the two crossbars 204 drives one long shaft 205 to move away from the other long shaft 205, and at the same time drives two short shafts 208 to move away from the other two short shafts 208, thereby increasing the distance between adjacent rubber sleeves 206, which facilitates the next plastic film laying work.

[0032] The base 1 is provided with an adjustment structure 3, which includes a connecting frame 301 and a moving shaft 302. A connecting frame 301 is fixedly connected to both sides of the base 1. The moving shaft 302 is provided through the connecting frame 301. A pressure roller 303 is rotatably connected to the moving shaft 302. The two pressure rollers 303 respectively abut against the two synchronous belts 210. A first nut 304 is threadedly connected to the moving shaft 302. The first nut 304 abuts against the connecting frame 301.

[0033] In practical use, the timing belt 210 is brought into tension by the pressure roller 303 pressing against it, which facilitates better driving. When the tension of the timing belt 210 needs to be adjusted, the first nut 304 can be turned with a wrench. When the first nut 304 is not tightly pressed against the connecting frame 301, the position of the moving shaft 302 on the connecting frame 301 can be adjusted. The position of the pressure roller 303 will change along with the moving shaft 302. By adjusting the position of the pressure roller 303, the tension of the timing belt 210 can be adjusted, so that the timing belt 210 can work with the most suitable tension, thereby improving the flexibility of use.

[0034] The base 1 is provided with a vacuum forming structure 4, which includes a second guide seat 401 and a first guide post 402. Four second guide seats 401 are fixedly connected inside the base 1. The first guide post 402 is slidably connected to the second guide seat 401. The top of the four first guide posts 402 is fixedly connected to the same moving frame 403. Two third drive components 404 are installed on the base 1. The output end of the third drive component 404 is fixedly connected to the bottom end of the moving frame 403. The top of the moving frame 403 is fixedly connected to a support plate 405. A mold 407 is installed on the support plate 405. The support plate 405 is provided with multiple vent holes 406. A vent pipe 408 is fixedly connected to one side of the moving frame 403.

[0035] In practical use, the suction pipe of the external vacuum pump can be connected to the air vent 408. When it is necessary to vacuum-form the plastic film, two third drive components 404 (preferably cylinders) can be activated simultaneously. The output ends of the two third drive components 404 extend and drive the moving frame 403 to move. During the movement of the moving frame 403, the four first guide pillars 402 slide on the four second guide seats 401 respectively, thereby guiding the movement of the moving frame 403. The movement of the moving frame 403 will drive the support plate 405 to move, and the movement of the support plate 405 will drive the mold 407 to move. When the mold 407 comes into contact with the plastic film, the vacuum pump can be used to evacuate the mold 407. During the evacuation process, the heated plastic film will be pressed onto the surface of the mold 407 under atmospheric pressure, thereby realizing the vacuum forming of the plastic film. When the vacuum-formed plastic film cools down, the mold 407 can be reversed to achieve automatic demolding, which is convenient for the next vacuum forming.

[0036] The movable frame 403 is provided with a pressing structure 5, which includes a third guide seat 501 and a sliding column 502. Two third guide seats 501 are fixedly connected to both sides of the movable frame 403. A sliding column 502 is slidably connected to the third guide seat 501. The top of the two sliding columns 502 is fixedly connected to the same pressure plate 504. A limiting plate 506 is provided through the two sliding columns 502 near the bottom. A second nut 505 is threadedly connected to the sliding column 502. One side of the limiting plate 506 abuts against the third guide seat 501, and the other side of the limiting plate 506 abuts against the second nut 505. A spring 503 is sleeved on the outside of the sliding column 502. One end of the spring 503 abuts against the third guide seat 501, and the other end of the spring 503 abuts against the pressure plate 504.

[0037] In practical use, during the movement of the moving frame 403, the two pressure plates 504 move together with the moving frame 403. Before the mold 407 contacts the plastic film, the two pressure plates 504 will contact the plastic film first. Then, as the moving frame 403 moves, the four sliding pillars 502 slide on the four third guide seats 501 respectively, and the four springs 503 will retract simultaneously. At this time, the pressure plates 504 will press the edge of the plastic film onto the guide plate 10, thereby fixing the plastic film before the mold 407 contacts the plastic film, preventing the plastic film from shifting position during the vacuum forming process, thus improving the stability of the plastic film vacuum forming. The second nut 505 can be unscrewed from the sliding pillar 502, and then the limiting plate 506 can be removed from the two sliding pillars 502. Finally, the spring 503 can be removed for replacement. Therefore, when the spring 503 is damaged, it can be replaced, thereby improving the efficiency of spring 503 maintenance.

[0038] The movable frame 403 is provided with a fixing structure 6, which includes a rotating rod 601 and a screw 602. The screw 602 is rotatably connected to the movable frame 403, and two movable plates 604 are threadedly connected to the screw 602. Two second guide posts 603 are fixedly connected inside the movable frame 403, and two movable plates 604 are slidably connected to the two second guide posts 603. Two abutments 605 are fixedly connected to the movable plates 604. Four inserts 606 are fixedly connected to the bottom end of the mold 407. The four inserts 606 engage with the same bearing plate 405. The inserts 606 are provided with grooves 607. One end of the abutment 605 extends into the interior of the adjacent groove 607 and abuts against the insert 606.

[0039] In practical use, when the mold 407 needs to be disassembled and repaired, the screw 602 can be rotated. The rotation of the screw 602 will drive the two moving plates 604 to move in opposite directions. The movement of the moving plates 604 will drive the two abutments 605 to move. When the ends of the four abutments 605 simultaneously disengage from the inside of the four grooves 607, the mold 407 can be moved to disengage the four inserts 606 from the support plate 405. At this time, the mold 407 can be quickly disassembled, avoiding the need to reach into the narrow space of the equipment to twist multiple bolts to disassemble the mold 407, thus facilitating the inspection and maintenance of the mold 407.

[0040] A rotating rod 601 is fixedly connected to the screw 602. The two threads on the screw 602 have opposite thread directions. The groove 607 has an overall trapezoidal structure, and the bottom section of the insert 606 has a trapezoidal structure.

[0041] In practical use, the screw 602 can be easily rotated by holding the rotating rod 601. When installing the mold 407, after the abutment block 605 and the insert block 606 come into contact, the wedge force can make the mold 407 and the bearing plate 405 press tightly together, thereby improving the stability of the mold 407 after installation.

[0042] Working principle: When plastic film needs to be vacuum-formed, two third drive components 404 are activated simultaneously. The extension of the output ends of the two third drive components 404 drives the moving frame 403 to move. The movement of the moving frame 403 drives the support plate 405 to move. The movement of the support plate 405 drives the mold 407 to move. During the movement of the moving frame 403, the two pressure plates 504 move together with the moving frame 403. Before the mold 407 comes into contact with the plastic film, the two pressure plates 504 will abut and fix the edge of the plastic film. After the mold 407 comes into contact with the plastic film, the mold 407 can be evacuated by a vacuum pump. During the evacuation process, the heated plastic film will be pressed onto the surface of the mold 407 under atmospheric pressure, thereby realizing the vacuum forming of the plastic film. After the vacuum-formed plastic film cools down, the mold 407 can move in the opposite direction, thereby realizing automatic demolding.

[0043] After the plastic film is vacuum-formed, coolant can be sprayed from multiple atomizing nozzles 703. During the spraying process, multiple second connecting pipes 704 can be oscillated simultaneously by activating the fourth drive component 808. Multiple atomizing nozzles 703 will oscillate together with the second connecting pipes 704, thereby increasing the spraying range. The baffle 705, in conjunction with the negative pressure device, can suck away floating objects in the coolant.

[0044] After a section of plastic film is vacuum-formed, two second drive components 212 can be activated simultaneously. Under the action of the second drive components 212, four short shafts 208 and two long shafts 205 rotate simultaneously. The rotation of the short shafts 208 and the long shafts 205 will drive the rubber sleeves 206 to rotate. The relative rotation of two adjacent rubber sleeves 206 will transport the plastic film a specified distance. A heating box 9 is set to heat the plastic mold before vacuum forming. A guide plate 10 is set to guide the movement of the plastic film during its movement. When it is necessary to lay the plastic film, the first drive component 203 is activated to increase the distance between adjacent rubber sleeves 206, thereby facilitating the next laying of the plastic film. The tension of the synchronous belt 210 can be adjusted by changing the position of the pressure roller 303.

[0045] When the mold 407 needs to be disassembled and repaired, the screw 602 can be rotated. The rotation of the screw 602 will drive the two moving plates 604 to move in opposite directions. The movement of the moving plates 604 will drive the two abutments 605 to move. When the ends of the four abutments 605 simultaneously disengage from the inside of the four grooves 607, the mold 407 can be moved to disengage the four inserts 606 from the support plate 405.

[0046] The contents not described in detail in this description are existing technologies known to those skilled in the art. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A thermoforming machine with enhanced cooling performance, characterized in that, Includes a base (1), on which a cooling structure (7) is provided, and on which a swing structure (8) is provided; The cooling structure (7) includes a support rod (701) and a first connecting pipe (702). Two support rods (701) are fixedly connected to the base (1). Multiple first connecting pipes (702) are rotatably connected between the two support rods (701). Multiple atomizing nozzles (703) are installed on the first connecting pipes (702). A swing structure (8) is provided on the support rod (701). The swing structure (8) includes a fourth guide seat (801) and a slide rod (802). Two fourth guide seats (801) are fixedly connected to one of the support rods (701). The same slide rod (802) is slidably connected to the two fourth guide seats (801). A first connecting plate (804) is fixedly connected to a connecting pipe (702). A plurality of abutments (803) corresponding one-to-one with the first connecting plate (804) are fixedly connected to the slide rod (802). The abutments (803) extend into the interior of the adjacent first connecting plate (804). A second connecting plate (805) is fixedly connected to the slide rod (802). A fourth drive assembly (808) is installed on one of the support rods (701). A turntable (807) is fixedly connected to the output end of the fourth drive assembly (808). A drive shaft (806) is fixedly connected to the turntable (807). The drive shaft (806) extends into the interior of the second connecting plate (805).

2. The vacuum forming machine with enhanced cooling performance according to claim 1, characterized in that: The multiple first connecting tubes (702) are linearly equidistant from each other, and the multiple atomizing nozzles (703) located on the same first connecting tube (702) are linearly equidistant from each other.

3. The vacuum forming machine with enhanced cooling performance according to claim 1, characterized in that: A second connecting pipe (704) is fixedly connected to another support rod (701), and one end of a plurality of first connecting pipes (702) is rotatably connected to the same second connecting pipe (704).

4. The vacuum forming machine with enhanced cooling performance according to claim 1, characterized in that: The top sides of the two support rods (701) are fixedly connected to the same baffle (705), and the baffle (705) is fixedly connected to a flange (706).

5. The vacuum forming machine with enhanced cooling performance according to claim 1, characterized in that: Multiple guide plates (10) are fixedly connected to the base (1). A heating box (9) is installed on the top side of the base (1). A traction structure (2) is provided on the base (1). The traction structure (2) includes a first guide seat (201) and a slide (202). The first guide seat (201) is fixedly connected to both sides of the base (1). A slide (202) is slidably connected to the first guide seat (201). A first drive assembly (203) is installed on the first guide seat (201). The output end of the first drive assembly (203) is connected to the slide (202). 02) Fixed connection between the two, a crossbar (204) is fixedly connected to the slide (202), one of the long shafts (205) is rotatably connected between the two crossbars (204), the bottom end of one of the long shafts (205) is provided with another long shaft (205), the other long shaft (205) is rotatably connected to the base (1), the outside of the long shaft (205) is provided with a rubber sleeve (206), two short shafts (208) are rotatably connected to the two crossbars (204), the bottom ends of the two short shafts (208) are respectively provided with two other short shafts. The shaft (208) and two other short shafts (208) are rotatably connected to the base (1). A rubber sleeve (206) is fitted around the outside of each short shaft (208). A gear (207) is fixedly connected to each short shaft (208). Gears (207) are fixedly connected to both ends of each long shaft (205). The two gears (207) on adjacent short shafts (208) mesh with each other, and the two gears (207) at adjacent ends of the two long shafts (205) mesh with each other. The other two short shafts (208) rotatably connected to the base (1) are respectively fixed with... Two of the first synchronous pulleys (209) are fixedly connected. Two other first synchronous pulleys (209) are fixedly connected to the two ends of another long shaft (205) rotatably connected to the base (1). The same synchronous belt (210) is wound around the two first synchronous pulleys (209) located on the same side of the base (1). Two second drive assemblies (212) are installed on the base (1). The output end of the second drive assembly (212) is fixedly connected to a second synchronous pulley (211). Two synchronous belts (210) are wound around the two second synchronous pulleys (211).

6. The vacuum forming machine with enhanced cooling performance according to claim 5, characterized in that: The base (1) is provided with an adjustment structure (3), which includes a connecting frame (301) and a moving shaft (302). A connecting frame (301) is fixedly connected to both sides of the base (1). A moving shaft (302) is provided through the connecting frame (301). A pressure roller (303) is rotatably connected to the moving shaft (302). The two pressure rollers (303) abut against the two synchronous belts (210) respectively. A first nut (304) is threadedly connected to the moving shaft (302). The first nut (304) abuts against the connecting frame (301).

7. The vacuum forming machine with enhanced cooling performance according to claim 1, characterized in that: The base (1) is provided with a vacuum forming structure (4), which includes a second guide seat (401) and a first guide post (402). Four second guide seats (401) are fixedly connected inside the base (1). The first guide post (402) is slidably connected to the second guide seat (401). The top of the four first guide posts (402) is fixedly connected to the same moving frame (403). Two third drive components (404) are installed on the base (1). The output end of the third drive component (404) is fixedly connected to the bottom end of the moving frame (403). The top of the moving frame (403) is fixedly connected to a support plate (405). A mold (407) is installed on the support plate (405). The support plate (405) is provided with multiple ventilation holes (406). A ventilation pipe (408) is fixedly connected to one side of the moving frame (403).

8. A vacuum forming machine with enhanced cooling performance according to claim 7, characterized in that: The movable frame (403) is provided with a pressing structure (5), which includes a third guide seat (501) and a sliding column (502). Two third guide seats (501) are fixedly connected to both sides of the movable frame (403). A sliding column (502) is slidably connected to the third guide seat (501). The top ends of the two sliding columns (502) are fixedly connected to the same pressure plate (504). A common pressure plate is provided through the two sliding columns (502) near their bottom ends. A limiting plate (506) is provided, and a second nut (505) is threaded onto the sliding column (502). One side of the limiting plate (506) abuts against the third guide seat (501), and the other side of the limiting plate (506) abuts against the second nut (505). A spring (503) is sleeved on the outside of the sliding column (502). One end of the spring (503) abuts against the third guide seat (501), and the other end of the spring (503) abuts against the pressure plate (504).

9. A vacuum forming machine with enhanced cooling performance according to claim 7, characterized in that: The movable frame (403) is provided with a fixed structure (6), the fixed structure (6) includes a rotating rod (601) and a screw (602). The screw (602) is rotatably connected to the movable frame (403). Two movable plates (604) are threadedly connected to the screw (602). Two second guide posts (603) are fixedly connected inside the movable frame (403). Two movable plates (604) are slidably connected to the two second guide posts (603). Two abutments (605) are fixedly connected to the movable plates (604). Four inserts (606) are fixedly connected to the bottom end of the mold (407). The four inserts (606) are engaged with the same bearing plate 405. The inserts (606) are provided with grooves (607). One end of the abutment (605) extends into the interior of the adjacent groove (607) and abuts against the insert (606).

10. A vacuum forming machine with enhanced cooling performance according to claim 9, characterized in that: A rotating rod (601) is fixedly connected to the screw (602). The two threads on the screw (602) have opposite thread directions. The groove (607) has an overall trapezoidal structure. The bottom section of the insert (606) has a trapezoidal structure.

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