Bending device for plastic plate production and bending method thereof

Abstract

The invention relates to the technical field of plastic plate production, and discloses a bending device for plastic plate production and a bending method thereof.The bending device comprises a top structure, a bending mechanism is arranged on the top structure, the bending mechanism comprises a bottom structure arranged below the top structure, and a middle structure is rotationally installed at the top end of the bottom structure; the top end of the middle structure is rotationally connected with the top structure, a threaded rod is rotationally installed on the inner wall of the top of the top structure, the threaded rod is fixedly sleeved with a round block with a groove, a telescopic spring is fixedly installed on the inner wall of the bottom of the round block with the groove, and an annular block is fixedly installed at the top end of the telescopic spring. After a plastic plate is cooled, a driving motor is rotated reversely, a threaded rod can drive an adapting block to ascend, at the moment, all mechanisms of the device can return to the position before heating, the bent plastic plate can be taken out, bending work is completed, and the bending efficiency is greatly improved.

Description

Technical Field

[0001] The invention relates to the technical field of plastic plate production equipment, and in particular to a bending device for plastic plate production and a bending method thereof. Background Art

[0002] Plastic board is made of plastic. Plastic is a synthetic polymer compound that can change its shape and style freely. Plastic is a material made by synthesizing or condensing monomer raw materials. It is composed of synthetic resin and additives such as fillers, plasticizers, stabilizers, lubricants, colorants, etc. Its main component is synthetic resin.

[0003] Bending a plastic plate requires three steps: heating, bending and cooling. Most bending processes need to be completed in steps, which will waste bending time. If the plastic plate cannot be bent immediately after being heated, the plastic plate will cool down quickly and the plastic may begin to solidify, making it difficult to bend or causing cracks. Summary of the invention

[0004] The object of the present invention is to provide a bending device and a bending method for plastic plate production, so as to solve the problem that most bending processes need to be completed in steps, which will waste bending time. If the plastic plate cannot be bent immediately after being heated, the plastic plate will cool down rapidly and the plastic may begin to solidify, resulting in difficulty in bending or cracking.

[0005] In order to solve the above technical problems, the present invention is achieved through the following technical solutions:

[0006] The present invention is a bending device for producing plastic plates, comprising a top structure, on which a bending mechanism is arranged, wherein the bending mechanism comprises a bottom structure arranged below the top structure, wherein a middle structure is rotatably mounted on the top of the bottom structure, wherein the top of the middle structure is rotatably connected to the top structure, and further comprising:

[0007] A threaded rod is rotatably installed on the top inner wall of the top structure, a circular block with a groove is fixedly sleeved on the threaded rod, a telescopic spring is fixedly installed on the bottom inner wall of the circular block with the groove, an annular block is fixedly installed on the top of the telescopic spring, the annular block is limitedly and slidably connected to the circular block with the groove, a plurality of connecting rods are hingedly installed on the annular block, a plurality of fixing plates are fixedly installed on the bottom inner wall of the middle structure, a plurality of fixing plates are respectively fixedly installed with a clamping spring 1 on one side away from each other, a plurality of clamping springs 1 are respectively fixedly installed with a clamping plate 1 on one end away from each other, a plurality of connecting rods are respectively hingedly installed with a pushing block on one end away from each other, and a plurality of pushing blocks respectively penetrate a plurality of fixing plates and are respectively slidably connected to a plurality of fixing plates.

[0008] Further, a number of clamping mechanisms are provided on the inner wall of the bottom of the middle structure. A limiting template is fixedly installed at the top of the middle structure. A C-shaped plate is fixedly installed on the back of the limiting template. A strip-shaped block is slidably installed on the C-shaped plate. The strip-shaped block penetrates through the C-shaped plate and the limiting template and is slidably connected to the limiting template. A circular fixing plate is fixedly sleeved on the strip-shaped block. A second clamping spring is sleeved on the strip-shaped block. The right end of the second clamping spring is fixedly connected to the circular fixing plate. The left end of the second clamping spring is fixedly connected to the limiting template. A second clamping plate is fixedly installed at the left end of the strip-shaped block. A plastic plate is arranged at the left end of the second clamping plate.

[0009] Further, a driving mechanism is arranged in the bottom structure. The driving mechanism includes a heat-conducting oil heating box and a perforated mounting plate fixedly installed in the bottom structure. The bottom end of the threaded rod is rotatably connected to the perforated mounting plate. A driving motor is fixedly installed at the top of the top structure. The threaded rod penetrates through the top structure and is fixedly connected to the output shaft of the driving motor. An adaptive spring is fixedly installed on the inner wall of the top of the top structure. The threaded rod penetrates through the adaptive spring. An adaptive block is threadedly sleeved on the threaded rod. The bottom end of the adaptive spring is fixedly connected to the adaptive block.

[0010] Further, a number of voltage stabilizing mechanisms are arranged on the top structure. The voltage stabilizing mechanisms include voltage stabilizing tubes fixedly installed on the outer wall of the top structure. A perforated circular plate is fixedly installed in the voltage stabilizing tubes. A voltage stabilizing spring is fixedly installed on the left side of the perforated circular plate. The left end of the voltage stabilizing spring is fixedly installed with a movable circular plate. The movable circular plate is slidably connected to the voltage stabilizing tube. The left end of the movable circular plate is fixedly installed with a number of C-shaped circular rods. One end of each of the number of C-shaped circular rods away from each other extends into the voltage stabilizing tube and is slidably connected to the voltage stabilizing tube.

[0011] Further, a number of transmission mechanisms are arranged at the bottom of the middle structure. The transmission mechanisms include transmission boxes fixedly installed at the bottom of the middle structure. A transmission spring is fixedly installed on the inner wall of the bottom of the transmission box. The top end of the transmission spring is fixedly installed with a transmission trapezoidal block. The transmission trapezoidal block is slidably connected to the transmission box. The top end of the transmission trapezoidal block extends into the middle structure and is slidably connected to the middle structure.

[0012] Further, a closing mechanism is arranged on a number of the transmission boxes. The closing mechanism includes limiting grooves respectively opened on the left sides of the transmission boxes. Connecting long plates are respectively fixedly installed on the left sides of the number of transmission trapezoidal blocks. The number of connecting long plates respectively penetrate through the number of limiting grooves and are slidably connected to the number of limiting grooves. An annular closing plate is fixedly installed at the left ends of the number of connecting long plates. A number of ventilation holes are opened on the middle structure. The top end of the annular closing plate extends into the middle structure and closes the ventilation holes.

[0013] Furthermore, several sealing mechanisms are provided at the top of the middle structure. The sealing mechanism includes a sealing groove opened at the top of the middle structure. A plurality of sealing springs are fixedly installed on the left inner wall of the sealing groove. The right ends of the plurality of sealing springs are fixedly installed with a sealing plate, and a拨动 plate is fixedly installed on the sealing plate.

[0014] Furthermore, for a bending device for plastic sheet production, the method steps are as follows:

[0015] S1: First,拨动 the拨动 plate, place the plastic sheet between the first clamping plate and the second clamping plate. The plastic sheet is stably clamped by the elastic forces of the first clamping spring and the second clamping spring. After releasing the拨动 plate, the拨动 plate will close the sealing groove under the elastic force of several sealing springs to improve the sealing performance of the device. Then, start the heat-conducting oil heating box. During the heating process of the heat-conducting oil heating box, the heat is transferred from the heat-conducting oil heating box to the device and evenly heats several plastic sheets in the middle structure by convection. During the heating-up process, the air pressure in the device will continuously increase. When the air pressure reaches a certain threshold, the air will push the movable circular plate away from the top structure through the perforated circular plate. When the movable circular plate slides on the U-shaped circular rod and leaves the pressure stabilizing tube, the gas entering the pressure stabilizing tube will be discharged from the gap between the pressure stabilizing tube and the movable circular plate. Since the heat-conducting oil heating box is equipped with a built-in temperature controller, when the temperature in the device reaches a temperature sufficient for bending the plastic sheet, the temperature controller will maintain the stable temperature in the device. The stability of the temperature will also make the air pressure in the device gradually stabilize. At this time, the movable circular plate will return in the opposite direction under the action of the pressure stabilizing spring, closing the gap between the pressure stabilizing tube and the movable circular plate;

[0016] S2: After the plastic sheet meets the bending requirements, start the driving motor. The driving motor drives the threaded rod to rotate. The threaded rod drives the adapting block to descend. The adapting block will contact and push the annular block to descend. The annular block will drive several connecting rods to descend. Several connecting rods will drive several pushing blocks to move away from each other. Several pushing blocks will contact and push several first clamping plates to move away from each other. The first clamping plate will push the plastic sheet to move. During the movement of the plastic sheet, the plastic sheet will be bent under the action of the limiting template. The plastic sheet will drive the second clamping plate to move until the second clamping plate contacts the transmission trapezoidal block and makes it move before stopping;

[0017] S3: During the movement of the second clamping plate, it will contact the transmission trapezoidal block. Under the action of the inclined plane of the transmission trapezoidal block, the second clamping plate will push the transmission trapezoidal block to descend. The transmission trapezoidal block will drive the connecting long plate to descend, and the connecting long plate will drive the annular closing plate to descend to open a number of ventilation holes. During the rotation of the threaded rod, it will drive the middle structure to rotate, and the middle structure will drive a number of plastic plates to rotate. The middle structure drives a number of plastic plates to accelerate the curing and cooling of the plastic plates under the action of centrifugal force. Since a number of ventilation holes have been opened, during the rotation of the middle structure, the outside air will enter the device;

[0018] S4: Since the thread distribution on the threaded rod is only over a certain distance and not completely distributed on the threaded rod, when the adaptor block descends and leaves the thread on the threaded rod, at this time the adaptor block will be under the elastic force of the adaptor spring and always be in a semi-detached state. At this time, the adaptor block will not move up and down, and at the same time it also ensures that the annular block under the pushing action of the adaptor block remains stable, so that the ventilation holes can be opened normally and the plastic plates can be bent smoothly. During this process, the threaded rod will keep rotating and will not be affected by the adaptor block. After the plastic plates are cooled, reverse the driving motor, and the threaded rod will drive the adaptor block to rise. At this time, each mechanism of the device will return to the position before heating, and the bent plastic plates can be taken out.

[0019] The present invention has the following beneficial effects:

[0020] (1) For the plastic plate bending device for plastic plate production of the present invention,拨动 the拨动 plate, place the plastic plate between the first clamping plate and the second clamping plate. The plastic plate is stably clamped by the elastic forces of the first clamping spring and the second clamping spring. After releasing the拨动 plate, the拨动 plate will close the sealing groove under the elastic forces of a number of sealing springs to improve the sealing performance of the device. Then start the heat-conducting oil heating tank. During the heating process of the heat-conducting oil heating tank, the heat is transferred from the heat-conducting oil heating tank to the device and evenly heats a number of plastic plates in the middle structure by convection. During the heating-up process, the air pressure in the device will continuously increase. When the air pressure reaches a certain threshold, the air will push the movable circular plate away from the top structure through the perforated circular plate. When the movable circular plate slides on the U-shaped circular rod and leaves the pressure stabilizing tube, the gas entering the pressure stabilizing tube will be discharged from the gap between the pressure stabilizing tube and the movable circular plate, thus forming a pressure relief effect. Since the heat-conducting oil heating tank is equipped with a temperature controller, when the temperature in the device reaches a temperature sufficient for bending the plastic plates, the temperature controller will maintain the stable temperature in the device. The stability of the air temperature will also make the air pressure in the device gradually stabilize. At this time, the movable circular plate will return in the reverse direction under the action of the pressure stabilizing spring, closing the gap between the pressure stabilizing tube and the movable circular plate to prevent outside air from entering the device and affecting the stable temperature of the softened plastic plates in the device;

[0021] (2) The present invention provides a bending device for producing plastic plates. After the plastic plate meets the bending requirements, the driving motor is started, the driving motor drives the threaded rod to rotate, the threaded rod drives the adapting block to descend, the adapting block will contact and push the annular block to descend, the annular block will drive a number of connecting rods to descend, the several connecting rods will drive a number of pushing blocks to move away from each other, the several pushing blocks will contact and push a number of clamping plates one to move away from each other, the clamping plate one will push the plastic plate to move, during the movement of the plastic plate, the plastic plate will be bent under the action of the limiting template, the plastic plate will drive the clamping plate two to move, and the clamping plate two will not stop until it contacts the transmission trapezoidal block and moves it;

[0022] (3) The present invention provides a bending device for producing plastic plates. During the movement of the clamping plate 2, the clamping plate 2 will contact the transmission trapezoidal block. Under the action of the inclined surface of the transmission trapezoidal block, the clamping plate 2 will push the transmission trapezoidal block down, and the transmission trapezoidal block will drive the connecting long plate to descend. The connecting long plate will drive the annular closed plate to descend to open a plurality of ventilation holes. During the rotation of the threaded rod, the middle structure will drive the rotation of a plurality of plastic plates. The middle structure drives the rotation of a plurality of plastic plates, and the solidification and cooling of the plastic plates is accelerated under the action of centrifugal force. Since a plurality of ventilation holes have been opened, the outside air will enter the device during the rotation of the middle structure, providing ventilation and cooling conditions for the cooling of the plastic plates.

[0023] (4) The present invention provides a bending device for producing plastic plates. Since the threads on the threaded rod are distributed only at a certain distance and are not completely distributed on the threaded rod, when the adapting block descends and leaves the threads on the threaded rod, the adapting block will be in a semi-detached state due to the elastic force of the adapting spring. At this time, the adapting block will not move up and down. At the same time, it also ensures that the annular block remains stable under the push of the adapting block, so that the ventilation hole can be opened normally and the plastic plate can be bent smoothly. During this process, the threaded rod will keep rotating and will not be affected by the adapting block. After the plastic plate is cooled, the drive motor is reversed, and the threaded rod will drive the adapting block to rise. At this time, the various mechanisms of the device will return to the position before heating, and the bent plastic plate can be taken out to complete the bending work, which greatly improves the bending efficiency.

[0024] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for describing the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.

[0026] Figure 1 Schematic diagram of the overall structure of the present invention;

[0027] Figure 2 Schematic diagram of the front sectional structure of the present invention;

[0028] Figure 3 For the present invention Figure 2 Enlarged schematic diagram of A in the present invention;

[0029] Figure 4 Schematic diagram of the internal partial sectional structure of the present invention;

[0030] Figure 5 For the present invention Figure 4 Enlarged schematic diagram of B in the present invention;

[0031] Figure 6 For the present invention Figure 2 Enlarged schematic diagram of C in the present invention;

[0032] Figure 7 For the present invention Figure 2 Enlarged schematic diagram of D in the present invention;

[0033] Figure 8 Schematic diagram of the method steps of the present invention.

[0034] In the attached drawings, the list of components represented by each reference numeral is as follows:

[0035] In the figure: 1, top structure; 100, bending mechanism; 101, bottom structure; 102, middle structure; 103, threaded rod; 104, grooved circular block; 105, telescopic spring; 106, annular block; 107, connecting rod; 108, fixing plate; 109, clamping spring one; 110, clamping plate one; 111, pushing block; 2, clamping mechanism; 201, limiting template; 202, C-shaped plate; 203, strip-shaped block; 204, circular fixing plate; 205, clamping spring two; 206, clamping plate two; 207, plastic plate; 3, driving mechanism; 301, heat-conducting oil heating tank; 302, perforated mounting plate; 303, driving motor; 304, adapting spring; 305, adapting block; 4, voltage stabilizing mechanism; 401, voltage stabilizing tube; 402, perforated circular plate; 403, voltage stabilizing spring; 404, movable circular plate; 405, C-shaped round rod; 5, transmission mechanism; 501, transmission box; 502, transmission spring; 503, transmission trapezoidal block; 6, closing mechanism; 601, limiting groove; 602, connecting long plate; 603, annular closing plate; 604, ventilation hole; 7, sealing mechanism; 701, sealing groove; 702, sealing spring; 703, sealing plate; 704,拨动板. (It seems there is a mistake in the original Chinese for "拨动板", which might be an incorrect or incomplete term. If it's a specific part name, it should be accurately translated according to its actual meaning. Here it's just left as is for now.) Detailed implementation manners

[0036] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0037] Please refer to Figure 1 - Figure 8 As shown, the present invention is a bending device for plastic plate production, including a top structure 1. A bending mechanism 100 is provided on the top structure 1. The bending mechanism 100 includes a bottom structure 101 disposed below the top structure 1. The top end of the bottom structure 101 is rotatably installed with a middle structure 102. The top end of the middle structure 102 is rotatably connected to the top structure 1. It further includes:

[0038] A threaded rod 103 is rotatably installed on the inner wall of the top of the top structure 1. A grooved circular block 104 is fixedly sleeved on the threaded rod 103. A telescopic spring 105 is fixedly installed on the inner wall of the bottom of the grooved circular block 104. The top end of the telescopic spring 105 is fixedly installed with an annular block 106. The annular block 106 is in limit sliding connection with the grooved circular block 104. A plurality of connecting rods 107 are hingedly installed on the annular block 106. A plurality of fixing plates 108 are fixedly installed on the inner wall of the bottom of the middle structure 102. A clamping spring one 109 is fixedly installed on one side of each of the plurality of fixing plates 108 away from each other. A clamping plate one 110 is fixedly installed at one end of each of the plurality of clamping springs one 109 away from each other. One end of each of the plurality of connecting rods 107 away from each other is hingedly installed with a pushing block 111. Each of the plurality of pushing blocks 111 penetrates through each of the plurality of fixing plates 108 and is in sliding connection with each of the plurality of fixing plates 108.

[0039] As Figure 5 shown, a plurality of clamping mechanisms 2 are provided on the inner wall of the bottom of the middle structure 102. A limit template 201 is fixedly installed on the top of the middle structure 102. A U-shaped plate 202 is fixedly installed on the back of the limit template 201. A strip-shaped block 203 is slidably installed on the U-shaped plate 202. The strip-shaped block 203 penetrates through the U-shaped plate 202 and the limit template 201. The strip-shaped block 203 is in sliding connection with the limit template 201. A circular fixing plate 204 is fixedly sleeved on the strip-shaped block 203. A clamping spring two 205 is sleeved on the strip-shaped block 203. The right end of the clamping spring two 205 is fixedly connected to the circular fixing plate 204. The left end of the clamping spring two 205 is fixedly connected to the limit template 201. A clamping plate two 206 is fixedly installed at the left end of the strip-shaped block 203. A plastic plate 207 is arranged at the left end of the clamping plate two 206.

[0040] Place the plastic plate 207 between the first clamping plate 110 and the second clamping plate 206. The plastic plate 207 is stably clamped by the elastic forces of the first clamping spring 109 and the second clamping spring 205.

[0041] As Figure 2 shown, a driving mechanism 3 is arranged inside the bottom structure 101. The driving mechanism 3 includes a heat-conducting oil heating tank 301 fixedly installed inside the bottom structure 101 and a perforated mounting plate 302. The bottom end of the threaded rod 103 is rotatably connected to the perforated mounting plate 302. A driving motor 303 is fixedly installed at the top of the top structure 1. The threaded rod 103 penetrates through the top structure 1 and is fixedly connected to the output shaft of the driving motor 303. An adaptive spring 304 is fixedly installed on the inner wall of the top of the top structure 1. The threaded rod 103 penetrates through the adaptive spring 304. A threaded sleeve 305 is sleeved on the threaded rod 103. The bottom end of the adaptive spring 304 is fixedly connected to the threaded sleeve 305.

[0042] During the heating process of the heat-conducting oil heating tank 301, the heat is transferred from the heat-conducting oil heating tank 301 to the device and evenly heats a plurality of plastic plates 207 inside the middle structure 102 by convection. Since the thread distribution on the threaded rod 103 is only over a certain distance and not completely distributed on the threaded rod 103, when the threaded sleeve 305 descends and leaves the thread on the threaded rod 103, at this time, the threaded sleeve 305 will be in a semi-detached state under the elastic force of the adaptive spring 304. At this time, the threaded sleeve 305 will not move up and down, and at the same time, it also ensures that the annular block 106 under the pushing action of the threaded sleeve 305 remains stable, enabling the ventilation holes 604 to be opened normally and the plastic plates 207 to be bent smoothly. During this process, the threaded rod 103 will keep rotating and will not be affected by the threaded sleeve 305.

[0043] As Figure 6 shown, a plurality of voltage stabilizing mechanisms 4 are arranged on the top structure 1. The voltage stabilizing mechanisms 4 include voltage stabilizing tubes 401 fixedly installed on the outer wall of the top structure 1. A perforated circular plate 402 is fixedly installed inside the voltage stabilizing tubes 401. A voltage stabilizing spring 403 is fixedly installed on the left side of the perforated circular plate 402. The left end of the voltage stabilizing spring 403 is fixedly installed with a movable circular plate 404. The movable circular plate 404 is slidably connected to the voltage stabilizing tube 401. The left end of the movable circular plate 404 is fixedly installed with a plurality of U-shaped circular rods 405. The ends of the plurality of U-shaped circular rods 405 away from each other all extend into the voltage stabilizing tube 401 and are all slidably connected to the voltage stabilizing tube 401.

[0044] When the air pressure reaches a certain threshold, the air will push the movable circular plate 404 away from the top structure 1 through the perforated circular plate 402. When the movable circular plate 404 slides on the U-shaped circular rod 405 and leaves the voltage stabilizing tube 401, the gas entering the voltage stabilizing tube 401 will be discharged from the gap between the voltage stabilizing tube 401 and the movable circular plate 404, thus forming a pressure relief effect. When the temperature reaches a level sufficient to bend the plastic plate 207, the air pressure inside the device will gradually stabilize. At this time, the movable circular plate 404 will return in the opposite direction under the action of the voltage stabilizing spring 403, closing the gap between the voltage stabilizing tube 401 and the movable circular plate 404 to prevent external air from entering the device and affecting the stable temperature of the softened plastic plate 207 inside the device.

[0045] As Figure 7 shown, a number of transmission mechanisms 5 are provided at the bottom of the middle structure 102. The transmission mechanism 5 includes a transmission box 501 fixedly installed at the bottom of the middle structure 102. A transmission spring 502 is fixedly installed on the bottom inner wall of the transmission box 501. The top end of the transmission spring 502 is fixedly installed with a transmission trapezoidal block 503. The transmission trapezoidal block 503 is slidably connected to the transmission box 501. The top end of the transmission trapezoidal block 503 extends into the middle structure 102 and is slidably connected to the middle structure 102.

[0046] During the movement of the second clamping plate 206, it will come into contact with the transmission trapezoidal block 503. Under the action of the inclined surface of the transmission trapezoidal block 503, the second clamping plate 206 will push the transmission trapezoidal block 503 downward.

[0047] As Figure 7 shown, a closing mechanism 6 is provided on a number of transmission boxes 501. The closing mechanism 6 includes a limiting groove 601 respectively opened on the left side of the transmission box 501. The left sides of a number of transmission trapezoidal blocks 503 are respectively fixedly installed with connecting long plates 602. A number of connecting long plates 602 respectively penetrate through a number of limiting grooves 601 and are slidably connected to a number of limiting grooves 601. The left ends of a number of connecting long plates 602 are fixedly installed with an annular closing plate 603. A number of ventilation holes 604 are opened on the middle structure 102. The top end of the annular closing plate 603 extends into the middle structure 102 and closes the ventilation holes 604.

[0048] The transmission trapezoidal block 503 will drive the connecting long plate 602 to descend. The connecting long plate 602 will drive the annular closing plate 603 to descend to open a number of ventilation holes 604. During the rotation of the threaded rod 103, it will drive the middle structure 102 to rotate. The middle structure 102 will drive a number of plastic plates 207 to rotate. By driving a number of plastic plates 207 through the middle structure 102, the solidification and cooling of the plastic plates 207 are accelerated under the action of centrifugal force. Since a number of ventilation holes 604 have been opened, during the rotation of the middle structure 102, external air will enter the device, providing a ventilated cooling condition for the cooling of the plastic plates 207.

[0049] As Figure 2 shown, several sealing mechanisms 7 are provided at the top of the middle structure 102. The sealing mechanism 7 includes a sealing groove 701 formed in the top of the middle structure 102. A plurality of sealing springs 702 are fixedly installed on the left inner wall of the sealing groove 701. The right ends of the plurality of sealing springs 702 are fixedly installed with a sealing plate 703, and a拨动 plate 704 is fixedly installed on the sealing plate 703.

[0050] After releasing the拨动 plate 704, the拨动 plate 704 will close the sealing groove 701 under the elastic force of the plurality of sealing springs 702 to improve the sealing performance of the device, ensuring that the temperature inside the device is not affected by the outside.

[0051] As Figure 1-8 shown, a bending device for plastic plate production has the following method steps:

[0052] S1: First,拨动 the拨动 plate 704, place the plastic plate 207 between the clamping plate one 110 and the clamping plate two 206. The plastic plate 207 is stably clamped by the elastic force of the clamping spring one 109 and the clamping spring two 205. After releasing the拨动 plate 704, the拨动 plate 704 will close the sealing groove 701 under the elastic force of the plurality of sealing springs 702 to improve the sealing performance of the device. Then start the heat-conducting oil heating box 301. During the heating process of the heat-conducting oil heating box 301, the heat is transferred from the heat-conducting oil heating box 301 to the inside of the device, and the plurality of plastic plates 207 inside the middle structure 102 are uniformly heated by convection. During the temperature increase process, the air pressure inside the device will continuously increase. When the air pressure reaches a certain threshold, the air will push the movable circular plate 404 away from the top structure 1 through the perforated circular plate 402. When the movable circular plate 404 slides on the U-shaped circular rod 405 and leaves the pressure stabilizing tube 401, the gas entering the pressure stabilizing tube 401 will be discharged from the gap between the pressure stabilizing tube 401 and the movable circular plate 404. Since the heat-conducting oil heating box 301 is equipped with a built-in temperature controller, when the temperature inside the device reaches a temperature sufficient for bending the plastic plate 207, the temperature controller will maintain the stable temperature inside the device, and the stability of the air temperature will also make the air pressure inside the device gradually stable. At this time, the movable circular plate 404 will return in the opposite direction under the action of the pressure stabilizing spring 403, closing the gap between the pressure stabilizing tube 401 and the movable circular plate 404;

[0053] S2: After the plastic plate 207 meets the bending requirement, the driving motor 303 is started, the driving motor 303 drives the threaded rod 103 to rotate, the threaded rod 103 drives the adapting block 305 to descend, the adapting block 305 will contact and push the annular block 106 to descend, the annular block 106 will drive a number of connecting rods 107 to descend, a number of connecting rods 107 will drive a number of pushing blocks 111 to move away from each other, a number of pushing blocks 111 will contact and push a number of clamping plates 1 10 to move away from each other, the clamping plate 1 10 will push the plastic plate 207 to move, during the movement of the plastic plate 207, the plastic plate 207 will be bent under the action of the limiting template 201, the plastic plate 207 will drive the clamping plate 2 206 to move, until the clamping plate 2 206 contacts the transmission trapezoidal block 503 and moves, it will stop;

[0054] S3: During the movement of the clamping plate 206, it will contact the transmission trapezoidal block 503. Under the action of the inclined surface of the transmission trapezoidal block 503, the clamping plate 206 will push the transmission trapezoidal block 503 to descend, and the transmission trapezoidal block 503 will drive the connecting long plate 602 to descend. The connecting long plate 602 will drive the annular closed plate 603 to descend to open the several ventilation holes 604. During the rotation of the threaded rod 103, the middle structure 102 will be driven to rotate, and the middle structure 102 will drive the several plastic plates 207 to rotate. The several plastic plates 207 are driven by the middle structure 102 to accelerate the solidification and cooling of the plastic plates 207 under the action of centrifugal force. Since the several ventilation holes 604 have been opened, the outside air will enter the device during the rotation of the middle structure 102.

[0055] S4: Since the threads on the threaded rod 103 are distributed over only a certain distance and are not completely distributed on the threaded rod 103, when the adaptation block 305 descends and leaves the threads on the threaded rod 103, the adaptation block 305 will be in a semi-detached state due to the elastic force of the adaptation spring 304. At this time, the adaptation block 305 will not move up and down. At the same time, it also ensures that the annular block 106 remains stable under the push of the adaptation block 305, so that the ventilation hole 604 can be opened normally and the plastic plate 207 can be bent smoothly. During this process, the threaded rod 103 will continue to rotate and will not be affected by the adaptation block 305. After the plastic plate 207 has cooled down, the drive motor 303 is reversed, and the threaded rod 103 will drive the adaptation block 305 to rise. At this time, the various mechanisms of the device will return to the position before heating, and the bent plastic plate 207 can be taken out.

[0056] The preferred embodiments of the present invention disclosed above are only used to help illustrate the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can understand and use the present invention well. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A bending device for producing plastic plates, comprising a top structure (1), wherein a bending mechanism (100) is arranged on the top structure (1), wherein the bending mechanism (100) comprises a bottom structure (101) arranged below the top structure (1), wherein a middle structure (102) is rotatably mounted on the top end of the bottom structure (101), and wherein the top end of the middle structure (102) is rotatably connected to the top structure (1), wherein: Also includes: A threaded rod (103) is rotatably mounted on the top inner wall of the top structure (1); a circular block (104) with a groove is fixedly sleeved on the threaded rod (103); a telescopic spring (105) is fixedly mounted on the bottom inner wall of the circular block (104); an annular block (106) is fixedly mounted on the top of the telescopic spring (105); the annular block (106) is limitedly slidably connected to the circular block (104); a plurality of connecting rods (107) are hingedly mounted on the annular block (106); and the middle structure (102) is provided with a plurality of connecting rods (107). ) are fixedly mounted on the bottom inner wall of the plurality of fixing plates (108), a clamping spring (109) is fixedly mounted on the side away from each other of the plurality of fixing plates (108), a clamping plate (110) is fixedly mounted on the end away from each other of the plurality of clamping springs (109), a pushing block (111) is hingedly mounted on the end away from each other of the plurality of connecting rods (107), and the pushing blocks (111) respectively penetrate the plurality of fixing plates (108) and are slidably connected to the plurality of fixing plates (108).

2. A bending device for plastic plate production according to claim 1, characterized in that: A plurality of clamping mechanisms (2) are arranged on the inner wall of the bottom of the middle structure (102); a limiting template (201) is fixedly installed on the top of the middle structure (102); a shaped plate (202) is fixedly installed on the back of the limiting template (201); a strip block (203) is slidably installed on the shaped plate (202); the strip block (203) penetrates the shaped plate (202) and the limiting template (201); the strip block (203) slides with the limiting template (201) The strip block (203) is connected with a circular fixing plate (204) fixedly sleeved on the strip block (203), a clamping spring (205) is sleeved on the strip block (203), the right end of the clamping spring (205) is fixedly connected to the circular fixing plate (204), the left end of the clamping spring (205) is fixedly connected to the limiting template (201), the left end of the strip block (203) is fixedly installed with a clamping plate (206), and the left end of the clamping plate (206) is provided with a plastic plate (207).

3. A bending device for plastic plate production according to claim 2, characterized in that: A driving mechanism (3) is arranged in the bottom structure (101), and the driving mechanism (3) comprises a heat transfer oil heating box (301) and a mounting plate (302) with holes fixedly mounted in the bottom structure (101); the bottom end of the threaded rod (103) is rotatably connected to the mounting plate (302) with holes; a driving motor (303) is fixedly mounted on the top of the top structure (1); the threaded rod (103) passes through the top structure (1) and is fixedly connected to the output shaft of the driving motor (303); an adapting spring (304) is fixedly mounted on the inner wall of the top of the top structure (1); the threaded rod (103) passes through the adapting spring (304); an adapting block (305) is threadedly sleeved on the threaded rod (103); and the bottom end of the adapting spring (304) is fixedly connected to the adapting block (305).

4. A bending device for plastic plate production according to claim 3, characterized in that: A number of voltage stabilizing mechanisms (4) are provided on the top structure (1). The voltage stabilizing mechanism (4) includes a voltage stabilizing tube (401) fixedly installed on the outer wall of the top structure (1). A perforated circular plate (402) is fixedly installed inside the voltage stabilizing tube (401). A voltage stabilizing spring (403) is fixedly installed on the left side of the perforated circular plate (402). The left end of the voltage stabilizing spring (403) is fixedly installed with a movable circular plate (404). The movable circular plate (404) is slidably connected to the voltage stabilizing tube (401). A number of U-shaped circular rods (405) are fixedly installed on the left end of the movable circular plate (404). The mutually remote ends of the number of U-shaped circular rods (405) all extend into the voltage stabilizing tube (401) and are all slidably connected to the voltage stabilizing tube (401).

5. A bending device for plastic plate production according to claim 4, characterized in that: A number of transmission mechanisms (5) are provided at the bottom of the middle structure (102). The transmission mechanism (5) includes a transmission box (501) fixedly installed at the bottom of the middle structure (102). A transmission spring (502) is fixedly installed on the bottom inner wall of the transmission box (501). The top end of the transmission spring (502) is fixedly installed with a transmission trapezoidal block (503). The transmission trapezoidal block (503) is slidably connected to the transmission box (501). The top end of the transmission trapezoidal block (503) extends into the middle structure (102) and is slidably connected to the middle structure (102).

6. A bending device for plastic plate production according to claim 5, characterized in that: A closing mechanism (6) is provided on the number of transmission boxes (501). The closing mechanism (6) includes limiting grooves (601) respectively opened on the left side of the transmission boxes (501). Connecting long plates (602) are respectively fixedly installed on the left sides of the number of transmission trapezoidal blocks (503). The number of connecting long plates (602) respectively penetrate through the number of limiting grooves (601) and are slidably connected to the number of limiting grooves (601). An annular closing plate (603) is fixedly installed at the left ends of the number of connecting long plates (602). A number of ventilation holes (604) are opened on the middle structure (102). The top end of the annular closing plate (603) extends into the middle structure (102) and closes the ventilation holes (604).

7. A bending device for plastic plate production according to claim 6, characterized in that: A number of sealing mechanisms (7) are provided at the top of the middle structure (102). The sealing mechanism (7) includes a sealing groove (701) opened at the top of the middle structure (102). A number of sealing springs (702) are fixedly installed on the left inner wall of the sealing groove (701). The right ends of the number of sealing springs (702) are fixedly installed with a sealing plate (703). A拨动 plate (704) is fixedly installed on the sealing plate (703).

8. A method for using a bending device for producing plastic plates, using the bending device for producing plastic plates as claimed in claim 7, characterized in that: The method steps are as follows: S1: First, toggle the toggle plate (704), place the plastic plate (207) between the first clamping plate (110) and the second clamping plate (206). The plastic plate (207) is stably clamped by the elastic forces of the first clamping spring (109) and the second clamping spring (205). After releasing the toggle plate (704), the toggle plate (704) will close the sealing groove (701) under the elastic force of several sealing springs (702) to improve the sealing performance of the device. Then, start the heat transfer oil heating tank (301). During the heating process of the heat transfer oil heating tank (301), the heat is transferred from the heat transfer oil heating tank (301) to the inside of the device, and the several plastic plates (207) inside the middle structure (102) are evenly heated by convection. During the temperature rise process, the air pressure inside the device will continuously increase. When the air pressure reaches a certain threshold, the air will push the movable circular plate (404) away from the top structure (1) through the perforated circular plate (402). When the movable circular plate (404) slides on the U-shaped circular rod (405) and leaves the pressure stabilizing tube (401), the gas entering the pressure stabilizing tube (401) will be discharged from the gap between the pressure stabilizing tube (401) and the movable circular plate (404). Since the heat transfer oil heating tank (301) is equipped with a built-in temperature controller, when the temperature inside the device reaches a level sufficient for the plastic plate (207) to bend, the temperature controller will maintain the stable temperature inside the device. The stability of the temperature will also cause the air pressure inside the device to gradually stabilize. At this time, the movable circular plate (404) will move back in the opposite direction under the action of the pressure stabilizing spring (403), closing the gap between the pressure stabilizing tube (401) and the movable circular plate (404). S2: After the plastic plate (207) meets the bending requirements, start the driving motor (303). The driving motor (303) drives the threaded rod (103) to rotate. The threaded rod (103) drives the adaptor block (305) to descend. The adaptor block (305) will contact and push the annular block (106) to descend. The annular block (106) will drive several connecting rods (107) to descend. The several connecting rods (107) will drive several pushing blocks (111) to move away from each other. The several pushing blocks (111) will contact and push several first clamping plates (110) to move away from each other. The first clamping plate (110) will push the plastic plate (207) to move. During the movement of the plastic plate (207), the plastic plate (207) will be bent under the action of the limit template (201). The plastic plate (207) will drive the second clamping plate (206) to move until the second clamping plate (206) contacts the transmission trapezoidal block (50 3) and makes it move before it stops; S3: During the movement of the second clamping plate (206), the second clamping plate (206) will contact the transmission trapezoidal block (503). Under the action of the inclined surface of the transmission trapezoidal block (503), the second clamping plate (206) will push the transmission trapezoidal block (503) downward, and the transmission trapezoidal block (503) will drive the connecting long plate (602) downward, and the connecting long plate (602) will drive the annular closing plate (603) downward to open the plurality of ventilation holes (604). During the rotation of the threaded rod (103), the middle structure (102) will be driven to rotate, and the middle structure (102) will drive the plurality of plastic plates (207) to rotate. The plurality of plastic plates (207) are driven by the middle structure (102) to accelerate the solidification and cooling of the plastic plates (207) under the action of centrifugal force. Since the plurality of ventilation holes (604) have been opened, the outside air will enter the device during the rotation of the middle structure (102); S4: When the adaptable block (305) descends and leaves the threads on the threaded rod (103), the adaptable block (305) is in a semi-detached state due to the elastic force of the adaptable spring (304). At this time, the adaptable block (305) does not move up and down. At the same time, it is ensured that the annular block (106) under the push of the adaptable block (305) remains stable, so that the ventilation hole (604) can be opened normally and the plastic plate (207) can be bent smoothly. During this process, the threaded rod (103) will continue to rotate and will not be affected by the adaptable block (305). After the plastic plate (207) is cooled, the drive motor (303) is reversed, and the threaded rod (103) drives the adaptable block (305) to rise. At this time, the various mechanisms of the device will return to the position before heating, and the bent plastic plate (207) can be taken out.

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