Thermoplastic forming device and forming method for T-shaped rubber ring production

Abstract

The thermoplastic forming device comprises a rack, a thermoplastic forming mechanism and a blanking mechanism are installed at the upper end of the rack, a transmission mechanism is installed below the rack, the thermoplastic forming mechanism comprises an upper thermoplastic mold and a lower thermoplastic mold, and the upper thermoplastic mold and the lower thermoplastic mold are arranged on the rack. The blanking mechanism comprises an upper blanking die and a lower blanking die, a positioning assembly is fixedly installed on one side of the lower blanking die, the transmission mechanism comprises two eccentric wheels, two connecting frames and a driving rod, the driving rod is rotationally installed at the lower end of the rack and penetrates through the two eccentric wheels, and the two connecting frames are fixedly installed on the two eccentric wheels. The driving rod is fixedly connected with the two eccentric wheels, and the two connecting frames are fixedly installed at the lower end of the thermoplastic lower die and the lower end of the blanking lower die correspondingly. Through the overall structure arrangement, the steps of thermoplastic forming and blanking can be synchronously carried out, the production efficiency is improved, and the driving mechanism is simple, high in automation degree and convenient to operate.

Description

Technical Field

[0001] The invention relates to the field of thermoplastic forming devices, in particular to a thermoplastic forming device. Background Art

[0002] T-rings are pipe joint seals that are manufactured by thermoplastic molding. In the production of existing T-rings, the raw materials after mixing are generally put into a mold, thermoplastic molding is performed through the mold, and finally the thermoplastic molded materials are taken out and sheared. The transfer of materials during the process requires manual operation, which is cumbersome and time-consuming, greatly reducing production efficiency. Summary of the invention

[0003] The purpose of the present application is to provide a thermoplastic forming device, which can drive the thermoplastic forming mechanism and the punching mechanism to work synchronously by arranging a thermoplastic forming mechanism and a punching mechanism on a frame, and arranging a transmission mechanism, so that the thermoplastic forming mechanism and the punching mechanism can be driven to work synchronously, so that the steps of thermoplastic forming and punching can be carried out synchronously, thereby improving production efficiency. At the same time, mold supply rollers and waste collection rollers are respectively arranged at both ends of the frame to retract and release the material belt, so that the material belt can continue to pass through the thermoplastic forming mechanism and the punching mechanism, so that the present invention has a higher degree of automation, and also avoids the steps of manual loading and unloading, thereby greatly saving production time.

[0004] To achieve the above-mentioned purpose, the present application provides the following technical solutions: a thermoplastic forming device, comprising a frame, wherein two ends of the frame are rotatably mounted with a mold supply roller and a waste collection roller, the upper end of the frame is mounted with a thermoplastic forming mechanism and a punching mechanism, and a transmission mechanism is mounted below the frame, the thermoplastic forming mechanism comprises a thermoplastic upper mold and a thermoplastic lower mold, one side of the thermoplastic upper mold is fixedly mounted with a positioning hole cutter, the punching mechanism comprises a punching upper mold and a punching lower mold, one side of the punching lower mold is fixedly mounted with a positioning assembly, the transmission mechanism comprises two eccentric wheels, two connecting frames and a driving rod, the driving rod is rotatably mounted on the lower end of the frame, the driving rod passes through the two eccentric wheels, and the driving rod is fixedly connected to the two eccentric wheels, the two connecting frames are respectively fixedly mounted on the lower end of the thermoplastic lower mold and the lower end of the punching lower mold, each of the eccentric wheels is fitted with the lower end of the corresponding connecting frame, the positioning hole cutter can cut a positioning hole on the raw material belt, and the positioning assembly can position the raw material belt through the positioning hole.

[0005] Preferably, the thermoplastic molding mechanism further includes a first bottom plate, a first top plate and a plurality of first guide rods, the first bottom plate being fixedly mounted on the upper end of the frame, the first top plate being arranged above the first bottom plate, the plurality of first guide rods being fixedly mounted between the first bottom plate and the first top plate, the thermoplastic upper mold being fixedly mounted on the lower end of the first top plate, the plurality of first guide rods being inserted through the thermoplastic lower mold, the upper end of the thermoplastic lower mold being provided with a thermoplastic lower groove, the thermoplastic lower groove comprising a plurality of circular grooves, a plurality of connecting grooves and two overflow grooves, the two overflow grooves being arranged in parallel, the plurality of circular grooves being arranged in a rectangular array between the two overflow grooves, the plurality of connecting grooves being arranged between two adjacent circular grooves and between the overflow groove and the corresponding circular groove, a convex column being fixedly mounted in the circular groove, the lower end of the thermoplastic upper mold being provided with a plurality of thermoplastic upper grooves in a rectangular array, the positions of the plurality of thermoplastic upper grooves corresponding one to one to the positions of the plurality of circular grooves.

[0006] Preferably, the punching mechanism also includes a second bottom plate, a second top plate and a plurality of second guide rods, the second bottom plate is fixedly mounted on the upper end of the frame, the second top plate is arranged above the second bottom plate, the plurality of second guide rods are fixedly mounted between the second bottom plate and the second top plate, the punching upper die is fixedly mounted below the second top plate through a connecting rod, the plurality of second guide rods pass through the punching lower die, the upper end of the punching lower die is provided with a plurality of punching holes in a rectangular array, the distance between the centers of two adjacent punching holes is equal to the distance between the centers of two adjacent circular grooves, the lower end of the punching upper die is fixedly mounted with a plurality of punching knives in a rectangular array, the punching knives are ring-shaped, and the positions of the plurality of punching knives correspond one-to-one to the positions of the plurality of punching holes.

[0007] Preferably, a first electric cylinder is fixedly installed on the upper end of the second top plate, a lifting plate is arranged between the second top plate and the punching upper die, the telescopic end of the first electric cylinder passes through the second top plate and is fixedly connected to the upper end of the lifting plate, a plurality of push rods are fixedly installed on the lower end of the lifting plate in a rectangular array, and the positions of the plurality of push rods correspond one to one to the positions of the plurality of punching knives; a through hole is provided in the middle part of the punching lower die, and the plurality of punching holes are all connected to the through hole, a conveyor belt is installed at one end of the frame, and one end of the conveyor belt is inserted into the through hole.

[0008] Preferably, the transmission mechanism also includes two mounting seats, which are fixedly mounted on the lower end of the first base plate and the lower end of the second base plate respectively, and the two eccentric wheels are rotatably mounted on the two mounting seats respectively, and rollers are rotatably mounted on the lower ends of the two connecting frames, and the two eccentric wheels are respectively arranged in close contact with the two rollers.

[0009] Preferably, the positioning assembly includes a cylinder, a limiting column, a cylinder, a fixing ring and a first spring, the cylinder being embedded in the blanking lower die, the lower end of the limiting column being inserted into the upper end of the cylinder, the bottom of the limiting column being elastically mounted with a plurality of limiting protrusions in an annular array, the lower end of the limiting protrusion being provided with a first inclined surface, the cylinder being fixedly mounted on the lower end of the limiting column, the bottom of the cylinder being elastically mounted with a plurality of steering protrusions in an annular array, the lower end of the steering protrusion being provided with a second inclined surface, the upper end of the steering protrusion being provided with a third inclined surface, the lower end of the fixing ring and one end of the first spring being fixedly mounted on the lower end of the cylinder, the upper end of the fixing ring being provided with a plurality of openings in an annular array, one side of the opening being provided with a fourth inclined surface, and the other side of the opening being provided with a protruding horizontal surface, the inner wall in the middle portion of the cylinder being provided with a plurality of lower clamping grooves in an annular array, and the inner wall at the top of the cylinder being provided with a plurality of upper clamping grooves in an annular array.

[0010] Preferably, it also includes a tensioning mechanism, which is arranged between the thermoplastic forming mechanism and the punching mechanism. The tensioning mechanism includes a mounting plate, a tensioning assembly and two clamping assemblies. The mounting plate is fixedly mounted on the upper end of the frame, and the two clamping assemblies are respectively fixedly mounted on both sides of the upper end of the mounting plate. The tensioning assembly is fixedly mounted in the middle of the upper end of the mounting plate. The clamping assembly can clamp the material strip at a specified height, and the tensioning assembly can tension the material strip.

[0011] Preferably, the clamping assembly includes a mounting frame, an upper rotating roller, two second electric cylinders and a lower rotating roller, the mounting frame is fixedly mounted on the upper end of the mounting plate, the upper rotating roller is rotatably mounted on the top of the mounting frame, the two second electric cylinders are respectively fixedly mounted on both sides of the mounting frame, and the two ends of the lower rotating roller are respectively rotatably connected to the telescopic ends of the two second electric cylinders.

[0012] Preferably, the tensioning assembly includes two columns, two telescopic columns and a tensioning roller, the two columns are fixedly mounted on the upper end of the mounting plate, the upper end of the column is provided with a cavity, a second spring is installed in the cavity, the lower ends of the two telescopic columns are respectively inserted into the two cavities, each telescopic column is slidably connected to the corresponding column, and the lower end of each telescopic column is fixedly connected to the upper end of the corresponding second spring.

[0013] Preferably, the present invention also provides a molding method for producing a T-shaped rubber ring, the method comprising the following steps: The mixed material strip is placed on the mold supply roller, one end of the material strip is pulled through between the thermoplastic upper mold and the thermoplastic lower mold, the driving rod is rotated to drive the eccentric wheel to rotate, and the eccentric wheel pushes the thermoplastic lower mold upward through the connecting frame to perform a thermoplastic molding on the material strip, and the positioning hole cutter cuts a positioning hole on the raw material strip; Pull one end of the material strip through between the punching upper die and the punching lower die, use the positioning assembly and the positioning hole to position the material strip, turn the drive rod again to drive the two eccentric wheels to rotate, thereby driving the thermoplastic lower die and the punching lower die to move upward synchronously, while the material strip is being thermoplastically formed, the position of the last thermoplastic forming is punched to cut out the T-shaped rubber ring; Pull the material strip again and repeat the above operation, and turn the driving rod again to drive the two eccentric wheels to rotate, perform thermoplastic molding and punching on the material strip, and at the same time, wind one end of the material strip around the waste collection roller, and then pull the material strip by driving the waste collection roller.

[0014] In summary, the technical effects and advantages of the present invention are as follows: 1. In the present invention, by arranging a thermoplastic forming mechanism and a punching mechanism on the frame, and arranging a transmission mechanism, the thermoplastic forming mechanism and the punching mechanism can be driven to work synchronously, so that the steps of thermoplastic forming and punching are carried out synchronously, and the production efficiency is improved. At the same time, a mold supply roller and a waste collection roller are respectively arranged at both ends of the frame to collect and release the material belt, so that the material belt can continuously pass through the thermoplastic forming mechanism and the punching mechanism, so that the present invention has a higher degree of automation, and also avoids the steps of manual loading and unloading, and greatly saves production time; 2. In the present invention, a positioning hole cutter is fixedly installed on one side of the thermoplastic upper mold, and the positioning hole cutter can cut a positioning hole on the raw material strip. A positioning component is fixedly installed on one side of the punching lower mold, and the positioning component can position the raw material strip through the positioning hole, so that the punching knife can be accurately aligned with the position after thermoplastic molding to complete precise cutting. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without paying any creative work.

[0016] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention; Figure 2 It is a schematic diagram of the cutaway structure of the present invention; Figure 3 For the present invention Figure 2 The enlarged structural diagram at A in the middle; Figure 4 It is a schematic cross-sectional structure diagram of the thermoplastic forming mechanism of the present invention; Figure 5 It is a structural schematic diagram of the thermoplastic lower mold of the present invention; Figure 6 It is a schematic diagram of the cutaway structure of the punching mechanism of the present invention; Figure 7 It is a structural schematic diagram of the blanking mechanism of the present invention; Figure 8 It is a schematic diagram of the cutaway structure of the positioning assembly of the present invention; Fig. 9 It is a schematic diagram of the cutaway structure of the cylinder of the present invention; Fig.10 It is a structural schematic diagram of the tensioning mechanism of the present invention.

[0017] In the figure: 1, frame; 2, mold supply roller; 3, thermoplastic molding mechanism; 301, first bottom plate; 302, first top plate; 303, first guide rod; 304, thermoplastic lower mold; 305, thermoplastic upper mold; 306, thermoplastic lower groove; 3061, circular groove; 3062, connecting groove; 3063, overflow groove; 3064, protruding column; 307, thermoplastic upper groove; 308, positioning hole cutter; 4, blanking mechanism; 401, second bottom plate; 402, second top plate; 403, second guide rod; 404, blanking lower mold; 405, blanking upper mold; 406, blanking hole; 407, blanking knife; 408, positioning assembly; 4081, cylinder; 4082, limit Column; 4083, cylinder; 4084, fixing ring; 4085, first spring; 4086, steering cam; 4087, limiting cam; 4088, lower card slot; 4089, upper card slot; 409, first electric cylinder; 410, lifting plate; 411, pushing rod; 5, conveyor belt; 6, waste collection roller; 7, transmission mechanism; 701, mounting seat; 702, eccentric wheel; 703, driving rod; 704, connecting frame; 705, roller; 8, tensioning mechanism; 801, mounting plate; 802, mounting frame; 803, upper rotating roller; 804, second electric cylinder; 805, lower rotating roller; 806, column; 807, telescopic column; 808, tensioning roller. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0019] Example 1: Reference Figure 1-Figure 3The thermoplastic forming device shown in the figure comprises a frame 1, and a mold supply roller 2 and a waste collection roller 6 are rotatably mounted on both ends of the frame 1, a thermoplastic forming mechanism 3 and a punching mechanism 4 are mounted on the upper end of the frame 1, and a transmission mechanism 7 is mounted below the frame 1. The thermoplastic forming mechanism 3 comprises a thermoplastic upper mold 305 and a thermoplastic lower mold 304, and a positioning hole cutter 308 is fixedly mounted on one side of the thermoplastic upper mold 305. The punching mechanism 4 comprises a punching upper mold 405 and a punching lower mold 404, and one side of the punching lower mold 404 A positioning assembly 408 is fixedly installed, and the transmission mechanism 7 includes two eccentric wheels 702, two connecting frames 704 and a driving rod 703. The driving rod 703 is rotatably installed on the lower end of the frame 1, and the driving rod 703 passes through the two eccentric wheels 702, and the driving rod 703 is fixedly connected to the two eccentric wheels 702. The two connecting frames 704 are respectively fixedly installed on the lower end of the thermoplastic lower mold 304 and the lower end of the punching lower mold 404, and each eccentric wheel 702 is fitted with the lower end of the corresponding connecting frame 704. The mixed material strip is placed on the die supply roller 2, and one end of the material strip is pulled through between the thermoplastic upper die 305 and the thermoplastic lower die 304, and the driving rod 703 is rotated to drive the eccentric wheel 702 to rotate. The eccentric wheel 702 pushes the thermoplastic lower die 304 upward through the connecting frame 704 to perform a thermoplastic molding on the material strip, and the positioning hole cutter 308 can cut a positioning hole on the raw material strip. Subsequently, one end of the material strip is pulled through between the punching upper die 405 and the punching lower die 404, and the positioning assembly 408 can position the raw material strip through the positioning hole, and the driving rod 703 is rotated again to drive the two The eccentric wheel 702 rotates, thereby driving the thermoplastic lower mold 304 and the punching lower mold 404 to move upward synchronously. While the material strip is being thermoplastically formed, the position of the last thermoplastic forming is punched out to cut out the T-shaped rubber ring. The material strip is pulled again and the above operation is repeated. At the same time, one end of the material strip is wound around the waste collection roller 6. The material strip is then pulled by driving the waste collection roller 6 to realize automated processing of the T-shaped rubber ring. Through the above structural arrangement, the steps of thermoplastic forming and punching can be carried out synchronously, thereby improving production efficiency. The driving mechanism is simple, the degree of automation is high, and the operation is convenient.

[0020] Embodiment 2 is different from the above embodiment in that Figure 4 and Figure 5As shown, the thermoplastic molding mechanism 3 also includes a first bottom plate 301, a first top plate 302 and a plurality of first guide rods 303, wherein the first bottom plate 301 is fixedly mounted on the upper end of the frame 1, the first top plate 302 is arranged above the first bottom plate 301, the plurality of first guide rods 303 are fixedly mounted between the first bottom plate 301 and the first top plate 302, the thermoplastic upper mold 305 is fixedly mounted on the lower end of the first top plate 302, the plurality of first guide rods 303 are inserted through the thermoplastic lower mold 304, the upper end of the thermoplastic lower mold 304 is provided with a thermoplastic lower groove 306, the thermoplastic lower groove 306 includes a plurality of circular grooves 3061, a plurality of connecting grooves 3062 and two overflow grooves 3063, the two overflow grooves 3063 are arranged in parallel, and the plurality of circular grooves 3061 are arranged in a rectangular array. It is placed between two overflow grooves 3063, and multiple connecting grooves 3062 are arranged between two adjacent circular grooves 3061 and between the overflow groove 3063 and the corresponding circular groove 3061. A convex column 3064 is fixedly installed in the circular groove 3061. The lower end of the thermoplastic upper mold 305 is provided with multiple thermoplastic upper grooves 307 in a rectangular array. The positions of the multiple thermoplastic upper grooves 307 correspond to the positions of the multiple circular grooves 3061 one by one. The circular grooves 3061, the thermoplastic upper grooves 307 and the convex column 3064 cooperate to plasticize the hot-melted raw materials into T-shaped rubber rings. The connecting grooves 3062 can ensure that the hot-melted raw materials can flow between the multiple circular grooves 3061 to ensure that the raw materials are evenly distributed. Excess raw materials will also flow into the overflow groove 3063 through the connecting grooves 3062 to avoid excess raw material turbulence.

[0021] Embodiment 3 is different from the above embodiments in that Figure 6 As shown, the blanking mechanism 4 further includes a second bottom plate 401, a second top plate 402 and a plurality of second guide rods 403, wherein the second bottom plate 401 is fixedly mounted on the upper end of the frame 1, the second top plate 402 is arranged above the second bottom plate 401, and the plurality of second guide rods 403 are fixedly mounted between the second bottom plate 401 and the second top plate 402, the blanking upper die 405 is fixedly mounted below the second top plate 402 through a connecting rod, and the plurality of second guide rods 403 are inserted through the blanking lower die 404 The upper end of the punching lower die 404 is provided with a plurality of punching holes 406 in a rectangular array, and the distance between the centers of two adjacent punching holes 406 is equal to the distance between the centers of two adjacent circular grooves 3061. The lower end of the punching upper die 405 is fixedly installed with a plurality of punching knives 407 in a rectangular array, and the punching knives 407 are ring-shaped, and the positions of the plurality of punching knives 407 correspond one by one to the positions of the plurality of punching holes 406. The punching knives 407 cut off the formed T-shaped rubber ring and drop it through the punching hole 406.

[0022] Embodiment 4 is different from the above embodiments in that Figure 7As shown, a first electric cylinder 409 is fixedly installed on the upper end of the second top plate 402, and a lifting plate 410 is arranged between the second top plate 402 and the punching upper die 405. The telescopic end of the first electric cylinder 409 passes through the second top plate 402 and is fixedly connected to the upper end of the lifting plate 410. A plurality of push rods 411 are fixedly installed on the lower end of the lifting plate 410 in a rectangular array. The positions of the plurality of push rods 411 correspond one by one to the positions of the plurality of punching knives 407. After the punching is completed, the T-shaped rubber ring may be stuck in the punching knife 407. The first electric cylinder 409 is used to push the lifting plate 410 down, and the push rod 411 can push out the T-shaped rubber ring stuck in the punching knife 407.

[0023] A through hole is provided in the middle of the punching lower die 404, and the plurality of punching holes 406 are all connected to the through hole. A conveyor belt 5 is installed at one end of the frame 1, and one end of the conveyor belt 5 is inserted into the through hole. After the T-shaped rubber ring is pushed out of the punching knife 407, it will fall on the conveyor belt 5, and the conveyor belt 5 will complete the discharge.

[0024] Embodiment 5 differs from the above embodiments in that the transmission mechanism 7 further includes two mounting seats 701, which are respectively fixedly mounted on the lower end of the first base plate 301 and the lower end of the second base plate 401, and the two eccentric wheels 702 are respectively rotatably mounted on the two mounting seats 701, and the lower ends of the two connecting frames 704 are both rotatably mounted with rollers 705, and the two eccentric wheels 702 are respectively fitted with the two rollers 705, and the rollers 705 are arranged to reduce the friction between the eccentric wheels 702 and the connecting frames 704 when rotating, thereby reducing energy consumption.

[0025] Embodiment 6 is different from the above embodiments in that Figure 8 and Fig. 9As shown, the positioning assembly 408 includes a cylinder 4081, a limiting column 4082, a cylinder 4083, a fixing ring 4084 and a first spring 4085. The cylinder 4081 is embedded in the punching lower die 404. The lower end of the limiting column 4082 is inserted into the upper end of the cylinder 4081. The bottom of the limiting column 4082 is elastically mounted with a plurality of limiting protrusions 4087 in an annular array. The lower end of the limiting protrusion 4087 is provided with a first inclined surface. The cylinder 4083 is fixedly mounted on the lower end of the limiting column 4082. The bottom of the cylinder 4083 is elastically mounted with a plurality of steering protrusions 4086 in an annular array. The lower end of the steering protrusion 4086 is provided with a second inclined surface. 086 is provided with a third inclined surface at the upper end, the lower end of the fixing ring 4084 and one end of the first spring 4085 are fixedly installed at the lower end in the cylinder 4081, the upper end of the fixing ring 4084 is provided with a plurality of openings in an annular array, one side of the opening is provided with a fourth inclined surface, and the other side of the opening is provided with a protruding horizontal surface, a plurality of lower card grooves 4088 are provided in an annular array on the inner wall of the middle part of the cylinder 4081, and a plurality of upper card grooves 4089 are provided in an annular array on the inner wall of the top of the cylinder 4081, the top of the limiting column 4082 is arranged in a truncated cone shape, and the upper end surface of the cylinder 4081 is flush with the upper end surface of the punching lower die 404, the initial state of the positioning assembly 408 is shown in the figure, and the limiting protrusion 408 7 is engaged with the lower slot 4088. When the material strip passes through the blanking mechanism 4, one end of the material strip contacts the inclined surface at the top of the limiting column 4082 and pushes the limiting column 4082 to move downward until the limiting column 4082 is completely immersed in the cylinder 4081. The edge of the lower slot 4088 contacts the first inclined surface, pushing the limiting protrusion 4087 to retract into the limiting column 4082. The second inclined surface contacts the fourth inclined surface, and the steering protrusion 4086 moves downward along the fourth inclined surface, driving the limiting column 4082 to rotate. The position of the limiting protrusion 4087 is staggered with the position of the lower slot 4088 and aligned with the position of the upper slot 4089. When the positioning hole reaches the position of the positioning assembly 408, the limiting column 4082 is in the position under the action of the first spring 4085. The cylinder 4081 pops up downward until the limiting protrusion 4087 engages with the upper slot 4089, and the limiting column 4082 is inserted into the positioning hole to position the material strip so that the punching knife 407 can be accurately aligned with the position after thermoplastic molding to complete precise cutting. During the punching process, when the punching lower die 404 contacts the punching upper die 405, the punching upper die 405 contacts and pushes the limiting column 4082 to sink into the cylinder 4081 again, and the limiting column 4082 rotates again, and the limiting protrusion 4087 is aligned with the lower slot 4088. When the punching lower die 404 and the punching upper die 405 are separated, the limiting column 4082 pops up outward, the limiting protrusion 4087 engages with the lower slot 4088, and the positioning assembly 408 returns to its initial state.

[0026] Embodiment 7 is different from the above embodiments in that Fig.10As shown, it also includes a tensioning mechanism 8, which is arranged between the thermoplastic forming mechanism 3 and the punching mechanism 4. The tensioning mechanism 8 includes a mounting plate 801, a tensioning assembly and two clamping assemblies. The mounting plate 801 is fixedly installed on the upper end of the frame 1, and the two clamping assemblies are respectively fixedly installed on both sides of the upper end of the mounting plate 801. The tensioning assembly is fixedly installed in the middle of the upper end of the mounting plate 801. The clamping assembly can clamp the material strip at a specified height, and the tensioning assembly can tension the material strip.

[0027] The clamping assembly includes a mounting frame 802, an upper rotating roller 803, two second electric cylinders 804 and a lower rotating roller 805. The mounting frame 802 is fixedly installed on the upper end of the mounting plate 801, the upper rotating roller 803 is rotatably installed on the top of the mounting frame 802, and the two second electric cylinders 804 are respectively fixedly installed on both sides of the mounting frame 802. The two ends of the lower rotating roller 805 are respectively rotatably connected to the telescopic ends of the two second electric cylinders 804, and the material belt is passed through between the upper rotating roller 803 and the lower rotating roller 805. The second electric cylinder 804 is used to push the lower rotating roller 805 to move upward to clamp the material belt, thereby supporting the material belt.

[0028] The tensioning assembly includes two columns 806, two telescopic columns 807 and a tensioning roller 808. The two columns 806 are fixedly mounted on the upper end of the mounting plate 801. The upper end of the column 806 is provided with a cavity, in which a second spring is installed. The lower ends of the two telescopic columns 807 are respectively inserted into the two cavities. Each telescopic column 807 is slidably connected to the corresponding column 806, and the lower end of each telescopic column 807 is fixedly connected to the upper end of the corresponding second spring. The material strip is passed around the tensioning roller 808 from above. The telescopic column 807 moves upward under the action of the second spring, driving the tensioning roller 808 to tension the material strip. When performing the thermoplastic molding and punching steps, the middle part of the material strip will move up and down with the movement of the thermoplastic lower mold 304 and the punching lower mold 404, resulting in the material strip not being too tight. However, if the material strip is too loose, it will affect the effect of thermoplastic molding and punching. The tensioning assembly cooperates with the clamping assembly to adaptively tension the material strip to improve the effect of thermoplastic molding and punching.

[0029] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A thermoplastic forming device, comprising a frame (1), characterized in that: A die supply roller (2) and a waste collection roller (6) are rotatably mounted on both ends of the frame (1), a thermoplastic forming mechanism (3) and a punching mechanism (4) are mounted on the upper end of the frame (1), and a transmission mechanism (7) is mounted below the frame (1). The thermoplastic forming mechanism (3) comprises a thermoplastic upper die (305) and a thermoplastic lower die (304), a positioning hole cutter (308) is fixedly mounted on one side of the thermoplastic upper die (305), the punching mechanism (4) comprises a punching upper die (405) and a punching lower die (404), a positioning assembly (408) is fixedly mounted on one side of the punching lower die (404), and the transmission mechanism (7) comprises two eccentric wheels (70 2), two connecting frames (704) and a driving rod (703), wherein the driving rod (703) is rotatably mounted on the lower end of the frame (1), the driving rod (703) passes through the two eccentric wheels (702), and the driving rod (703) is fixedly connected to the two eccentric wheels (702), the two connecting frames (704) are respectively fixedly mounted on the lower end of the thermoplastic lower mold (304) and the lower end of the punching lower mold (404), each of the eccentric wheels (702) is arranged in close contact with the lower end of the corresponding connecting frame (704), the positioning hole cutter (308) can cut a positioning hole on the raw material belt, and the positioning assembly (408) can position the raw material belt through the positioning hole.

2. A thermoplastic forming device according to claim 1, characterized in that: The thermoplastic molding mechanism (3) further comprises a first bottom plate (301), a first top plate (302) and a plurality of first guide rods (303), wherein the first bottom plate (301) is fixedly mounted on the upper end of the frame (1), the first top plate (302) is arranged above the first bottom plate (301), the plurality of first guide rods (303) are fixedly mounted between the first bottom plate (301) and the first top plate (302), the thermoplastic upper mold (305) is fixedly mounted on the lower end of the first top plate (302), the plurality of first guide rods (303) are inserted through the thermoplastic lower mold (304), the upper end of the thermoplastic lower mold (304) is provided with a thermoplastic lower groove (306), and the thermoplastic lower groove (306) comprises a plurality of The thermoplastic upper mold (305) is provided with a plurality of circular grooves (3061), a plurality of connecting grooves (3062) and two overflow grooves (3063), the two overflow grooves (3063) are arranged in parallel, the plurality of circular grooves (3061) are arranged in a rectangular array between the two overflow grooves (3063), the plurality of connecting grooves (3062) are arranged between two adjacent circular grooves (3061) and between an overflow groove (3063) and a corresponding circular groove (3061), a convex column (3064) is fixedly installed in the circular groove (3061), and the lower end of the thermoplastic upper mold (305) is provided with a plurality of thermoplastic upper grooves (307) in a rectangular array, and the positions of the plurality of thermoplastic upper grooves (307) correspond one to one with the positions of the plurality of circular grooves (3061).

3. A thermoplastic forming device according to claim 2, characterized in that: The punching mechanism (4) further comprises a second bottom plate (401), a second top plate (402) and a plurality of second guide rods (403); the second bottom plate (401) is fixedly mounted on the upper end of the frame (1); the second top plate (402) is arranged above the second bottom plate (401); the plurality of second guide rods (403) are fixedly mounted between the second bottom plate (401) and the second top plate (402); the punching upper die (405) is fixedly mounted below the second top plate (402) via a connecting rod; the plurality of second guide rods (403) are fixedly mounted between the second bottom plate (401) and the second top plate (402); The guide rod (403) passes through the punching lower die (404); the upper end of the punching lower die (404) is provided with a plurality of punching holes (406) in a rectangular array; the distance between the centers of two adjacent punching holes (406) is equal to the distance between the centers of two adjacent circular grooves (3061); the lower end of the punching upper die (405) is fixedly provided with a plurality of punching knives (407) in a rectangular array; the punching knives (407) are ring-shaped; and the positions of the plurality of punching knives (407) correspond one-to-one to the positions of the plurality of punching holes (406).

4. A thermoplastic forming device according to claim 3, characterized in that: A first electric cylinder (409) is fixedly mounted on the upper end of the second top plate (402); a lifting plate (410) is provided between the second top plate (402) and the punching upper die (405); a telescopic end of the first electric cylinder (409) passes through the second top plate (402) and is fixedly connected to the upper end of the lifting plate (410); a plurality of push rods (411) are fixedly mounted in a rectangular array on the lower end of the lifting plate (410); positions of the plurality of push rods (411) correspond one-to-one to positions of the plurality of punching knives (407); A through hole is provided in the middle of the punching lower die (404), and the plurality of punching holes (406) are all connected to the through hole. A conveyor belt (5) is installed at one end of the frame (1), and one end of the conveyor belt (5) is inserted into the through hole.

5. A thermoplastic forming device according to claim 3, characterized in that: The transmission mechanism (7) further comprises two mounting seats (701), the two mounting seats (701) being fixedly mounted on the lower end of the first base plate (301) and the lower end of the second base plate (401), respectively; the two eccentric wheels (702) are rotatably mounted on the two mounting seats (701), respectively; rollers (705) are rotatably mounted on the lower ends of the two connecting frames (704), and the two eccentric wheels (702) are respectively arranged to fit the two rollers (705).

6. A thermoplastic forming device according to claim 1, characterized in that: The positioning assembly (408) comprises a cylinder (4081), a limiting column (4082), a cylinder (4083), a fixing ring (4084) and a first spring (4085); the cylinder (4081) is embedded in the punching lower die (404); the lower end of the limiting column (4082) is inserted into the upper end of the cylinder (4081); the bottom of the limiting column (4082) is elastically mounted with a plurality of limiting protrusions (4087) in an annular array; the lower end of the limiting protrusion (4087) is provided with a first inclined surface; the cylinder (4083) is fixedly mounted on the lower end of the limiting column (4082); the bottom of the cylinder (4083) is elastically mounted with a plurality of limiting protrusions (4087) in an annular array A plurality of steering protrusions (4086), wherein the lower end of the steering protrusion (4086) is provided with a second inclined surface, and the upper end of the steering protrusion (4086) is provided with a third inclined surface. The lower end of the fixing ring (4084) and one end of the first spring (4085) are fixedly mounted at the lower end in the cylinder (4081). The upper end of the fixing ring (4084) is provided with a plurality of openings in an annular array, one side of the opening is provided with a fourth inclined surface, and the other side of the opening is provided with a protruding transverse surface. The inner wall of the middle part of the cylinder (4081) is provided with a plurality of lower grooves (4088) in an annular array, and the inner wall of the top of the cylinder (4081) is provided with a plurality of upper grooves (4089) in an annular array.

7. A thermoplastic forming device according to claim 1, characterized in that: It also comprises a tensioning mechanism (8), the tensioning mechanism (8) being arranged between the thermoplastic forming mechanism (3) and the punching mechanism (4), the tensioning mechanism (8) comprising a mounting plate (801), a tensioning assembly and two clamping assemblies, the mounting plate (801) being fixedly mounted on the upper end of the frame (1), the two clamping assemblies being respectively fixedly mounted on two sides of the upper end of the mounting plate (801), the tensioning assembly being fixedly mounted on the middle part of the upper end of the mounting plate (801), the clamping assembly being capable of clamping the material strip, and the tensioning assembly being capable of tensioning the material strip.

8. A thermoplastic forming device according to claim 7, characterized in that: The clamping assembly comprises a mounting frame (802), an upper rotating roller (803), two second electric cylinders (804) and a lower rotating roller (805); the mounting frame (802) is fixedly mounted on the upper end of the mounting plate (801); the upper rotating roller (803) is rotatably mounted on the top of the mounting frame (802); the two second electric cylinders (804) are respectively fixedly mounted on both sides of the mounting frame (802); and both ends of the lower rotating roller (805) are respectively rotatably connected to the telescopic ends of the two second electric cylinders (804).

9. A thermoplastic forming device according to claim 7, characterized in that: The tensioning assembly comprises two columns (806), two telescopic columns (807) and a tensioning roller (808); the two columns (806) are fixedly mounted on the upper end of the mounting plate (801); a cavity is provided at the upper end of the column (806); a second spring is installed in the cavity; the lower ends of the two telescopic columns (807) are respectively inserted into the two cavities; each telescopic column (807) is slidably connected to the corresponding column (806), and the lower end of each telescopic column (807) is fixedly connected to the upper end of the corresponding second spring.

10. A method for producing a T-shaped rubber ring using a thermoplastic molding device as claimed in any one of claims 1 to 9, characterized in that: The steps include: The mixed material strip is placed on the mold supply roller (2), one end of the material strip is pulled through between the thermoplastic upper mold (305) and the thermoplastic lower mold (304), the driving rod (703) is rotated to drive the eccentric wheel (702) to rotate, and the eccentric wheel (702) pushes the thermoplastic lower mold (304) upward through the connecting frame (704), the material strip is thermoplastically molded once, and the positioning hole cutter (308) cuts a positioning hole on the raw material strip; Pull one end of the material strip through between the punching upper die (405) and the punching lower die (404), use the positioning assembly (408) to cooperate with the positioning hole to position the material strip, rotate the driving rod (703) again to drive the two eccentric wheels (702) to rotate, thereby driving the thermoplastic lower die (304) and the punching lower die (404) to move upward synchronously, and while the material strip is being thermoplastically formed, the position of the last thermoplastic forming is punched to cut out the T-shaped rubber ring; The material strip is pulled again, and the driving rod (703) is rotated again to drive the two eccentric wheels (702) to rotate, and the material strip is thermoplastically formed and punched. At the same time, one end of the material strip is wound around the waste collection roller (6), and then the material strip is pulled by driving the waste collection roller (6).

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