Tube pulling device for ampoule bottle production

Abstract

The invention discloses a tube drawing device for ampoule bottle production, and relates to the field of ampoule bottle production, the tube drawing device comprises a drawing platform, a plurality of supporting rollers are mounted on the drawing platform, a plurality of heating nozzles are arranged between the adjacent supporting rollers, and a clamping rotating mechanism is arranged on the drawing platform. And a stable positioning mechanism is arranged on the stretching platform. The clamping and rotating mechanism gets close to the two ends of the glass tube, the two ends of the glass tube are clamped through the clamping and rotating mechanism, meanwhile, the clamping and rotating mechanism drives the stable positioning mechanism to position the glass tube, then the glass tube is driven to rotate, and the glass tube is stably clamped, so that the glass tube can be heated more uniformly; the possibility that a plurality of supporting rollers need to be arranged for traditional heating, and the glass tube moves among the supporting rollers to complete turn-over heating is reduced, and the possibility that the glass tube possibly deforms due to multiple times of movement during heating is reduced.

Description

Technical Field

[0001] The present application relates to the field of ampoules, and in particular to a tube drawing device for producing ampoules. Background Art

[0002] Ampoules are small glass containers used to hold liquid medicine, often used for injection of liquid medicine. When producing ampoules, long glass tubes are generally used for the production of ampoules. During the production process, the glass tubes are heated and then stretched to form the structure of the ampoule. The glass tubes are then cut. After cutting, the cut glass tubes are heated and sealed. The machine for stretching the glass tubes is called a tube drawing device, which is generally divided into a vertical tube drawing device and a horizontal tube drawing device.

[0003] The structure of the horizontal tube drawing device is generally composed of a stretching table, multiple support rollers, a heating nozzle, a shaping roller and a stretching movable seat. When stretching the glass tube, the feeding device first sends the glass tube to adjacent support rollers in sequence, and then the heating nozzle heats the glass tube. At the same time, the shaping roller rotates to squeeze the glass tube, so that multiple recessed areas appear on the glass tube. Then the glass tube continues to move between the next set of adjacent support rollers, and the heating nozzle heats the recessed position of the glass tube. After heating, the glass tube is moved to the stretching movable seat. The stretching movable seat clamps the unheated area of ​​the glass tube and stretches the glass tube to complete the tube drawing device for ampoule production.

[0004] After the glass tube is shaped, it is heated. In order to heat the glass tube evenly, a plurality of support rollers are generally arranged when the glass tube is moved between the stretching movable seats. There are heating nozzles between adjacent support rollers. The glass tube moves from these support rollers in sequence during the heating process, and the glass tube is turned over when being heated, so that the glass tube is heated evenly. However, multiple movements of the glass tube during the heating process may cause deformation of the glass tube. Summary of the invention

[0005] The purpose of the present application is to solve the problem proposed in the above background technology that multiple support rollers are set up, and heating nozzles are arranged between adjacent support rollers, so that the glass tube can be moved from these support rollers in sequence during the heating process, and the glass tube can be turned over when being heated, so that the glass tube can be heated evenly. However, the glass tube may be deformed due to multiple movements during the heating and moving process. The present application provides a tube drawing device for ampoule bottle production.

[0006] In order to achieve the above-mentioned purpose, this application specifically adopts the following technical solutions: A tube drawing device for ampoule bottle production includes a stretching platform, a plurality of support rollers are installed on the stretching platform, a plurality of toggle rods are fixed on the support rollers, a plurality of heating nozzles are arranged between adjacent support rollers, the heating nozzles are installed on the stretching platform, a plastic roller is installed on the stretching platform, an electric slide rail is installed on one side of the stretching platform, a plurality of clamping and stretching seats are slidably connected to the electric slide rail, a clamping and rotating mechanism is arranged on the stretching platform, and a stabilizing positioning mechanism is arranged on the stretching platform.

[0007] By adopting the above technical solution, the heating nozzle is used to heat the glass tube before stretching. During the heating process, the clamping and rotating mechanism is moved close to the two ends of the glass tube, and the two ends of the glass tube are clamped by the clamping and rotating mechanism, and then the glass tube is driven to rotate, so that the glass tube is evenly heated during the heating process. When the clamping and rotating mechanism is close to the end of the glass tube, the clamping and rotating mechanism drives the stable positioning mechanism, and the stable positioning mechanism is inserted into the glass tube to position the glass tube, so that the glass tube is stably clamped, so that the glass tube can be heated more evenly, reducing the need to set multiple support rollers for traditional heating, allowing the glass tube to move between multiple support rollers to complete the possibility of flipping over for heating, and reducing the possibility of deformation of the glass tube due to multiple movements during heating.

[0008] Furthermore, the clamping and rotating mechanism comprises a support frame fixed on the stretching platform, the support frame is provided with two symmetrical support seats, a synchronous moving component is provided between the two support seats and the support frame, and the two support seats are provided with clamping components.

[0009] By adopting the above technical solution, the synchronization component drives the support seat on the support frame, and the clamping components on the support seat are simultaneously close to the glass tube being heated, and then the clamping components on the two support seats clamp the two ends of the glass tube, and then the clamping components on the two support seats are rotated, so that the glass tube can be heated evenly when heated, reducing the need to set multiple support rollers after the glass tube is shaped, allowing the glass tube to move between the support rollers for turning over and heating, and reducing the possibility of deformation of the glass tube due to multiple movements when heated.

[0010] Further, the clamping assembly includes a clamping ring 1 arranged on a support seat, the clamping ring 1 is rotatably connected to a clamping ring 2, the clamping ring 1 is provided with a plurality of circumferentially distributed clamping rods, the middle portion of the clamping rod is rotatably connected to the clamping ring 1, a sliding block is fixed to one end of the clamping rod close to the clamping ring 2, a sliding groove corresponding to the sliding block is provided on the clamping ring 2, the sliding block is located in the sliding groove and is slidably connected to the clamping ring 2, an electric telescopic rod is provided on the clamping ring 1, the telescopic end of the electric telescopic rod 1 is rotatably connected to one of the sliding blocks, and a rotating part is provided between the clamping ring 1 and the support seat.

[0011] By adopting the above technical solution, the electric telescopic rod drives one of the sliding blocks to move in the sliding groove, so that the clamping end of the clamping rod approaches the glass tube, and at the same time the sliding block drives the second clamping ring to rotate on the first clamping ring, and the second clamping ring drives other clamping rods, so that the clamping ends on several clamping rods are in contact with the glass tube at the same time, so that the glass tube can be clamped conveniently, and glass tubes of different sizes can be clamped conveniently.

[0012] Furthermore, the rotating member includes a rotating seat rotatably connected to the support seat, a plurality of connecting rods are fixed on the rotating seat, the connecting rods are fixedly connected to a clamping ring, the electric telescopic rod is fixedly connected to one of the connecting rods, a rotating wheel is rotatably connected to the support seat, and a transmission belt is connected between the rotating wheel and the rotating seat.

[0013] By adopting the above technical solution, the rotating wheel drives the transmission belt, the transmission belt drives the rotating seat, the rotating seat drives the connecting rod, and the connecting rod drives the clamping ring 1, so that the clamping ring 1 can drive the glass tube to rotate on the supporting seat.

[0014] Furthermore, a telescopic rod 1 is arranged between the two support seats, a telescopic rod 2 is slidably connected to the telescopic rod 1, an external spline is fixed to the telescopic rod 1, one end of the telescopic rod 1 is fixedly connected to one of the rotating wheels, and one end of the telescopic rod 2 is fixedly connected to the other rotating wheel, a rotating motor is fixed on one of the support seats, and an output end of the rotating motor passes through the support seat and is fixedly connected to the rotating wheel.

[0015] By adopting the above technical solution, the rotating motor drives one of the rotating wheels on the support seat to rotate, the rotating wheel drives the telescopic rod 1, the telescopic rod 1 drives the telescopic rod 2, and the telescopic rod 2 drives another rotating wheel, so that the two ends of the glass tube clamped on the clamping ring 1 can keep synchronization when rotating.

[0016] Furthermore, the synchronous moving component includes a bidirectional threaded rod rotatably connected to the support frame, the bidirectional threaded rod passes through two support seats and is threadedly connected to the two support seats, a limiting slide rod is fixed on the support frame, the limiting slide rod passes through the two support seats and is slidably connected to the support seats, a moving motor is fixed on the support frame, and the output end of the moving motor passes through the support frame and is fixedly connected to the bidirectional threaded rod.

[0017] By adopting the above technical solution, the mobile motor drives the bidirectional threaded rod, and the bidirectional threaded rod drives the support seat at the same time, so that the support seat moves synchronously under the support of the limiting slide rod, so that when the glass tube moves, the obstruction of the clamping ring and the support seat to the glass tube can be reduced.

[0018] Furthermore, the stable positioning mechanism comprises a positioning cone head arranged on the rotating seat, a supporting block is fixed on the positioning cone head, a sliding seat is slidably connected to the supporting block, and the sliding seat is fixedly connected to the rotating seat.

[0019] By adopting the above technical solution, the rotating seat drives the sliding seat, the sliding seat drives the supporting block, the supporting block drives the positioning cone head, and the positioning cone head is inserted into the glass tube, so that the glass tube can be more conveniently centered when the clamping rod clamps the glass tube. At the same time, the positioning cone head supports the glass tube, and further improves the stability of the glass tube when rotating.

[0020] Furthermore, a buffer spring is provided between the sliding seat and the support block, and both ends of the buffer spring are fixedly connected to the sliding seat and the support block.

[0021] By adopting the above technical solution, the positioning cone head drives the support block to move in the sliding seat, and the support block squeezes the buffer spring. Under the push of the buffer spring, the positioning cone head is stably inserted into the glass tube, thereby reducing the possibility of the positioning cone head over-squeezing the glass tube.

[0022] In summary, the present application includes at least one of the following beneficial effects: 1. In the present application, during the heating process, the moving motor drives the bidirectional threaded rod, and the bidirectional threaded rod drives the support seat at the same time, so that the support seat moves synchronously under the support of the limit slide rod, and the clamping ring 1 on the support seat is simultaneously sleeved on the glass tube, and the electric telescopic rod drives one of the sliding blocks to move in the sliding groove, so that the clamping end of the clamping rod approaches the glass tube, and at the same time the sliding block drives the clamping ring 2 to rotate on the clamping ring 1, and the clamping ring 2 drives other clamping rods, so that the clamping ends on several clamping rods are simultaneously against the glass tube, so as to complete the clamping of the glass tube, and the rotating motor drives one of the rotating wheels on the support seat to rotate. Then the rotating wheel drives the rotating seat with the transmission belt, and at the same time the rotating wheel drives telescopic rod one, telescopic rod one drives telescopic rod two, telescopic rod two drives another rotating wheel, so that the two rotating wheels drive the corresponding rotating seats to rotate with the transmission belt, the rotating seat drives the connecting rod, the connecting rod drives the clamping ring one, and the clamping ring one drives the clamping rod, so that the glass tube rotates when heated, so that the glass tube can be heated more evenly, and the need to set up multiple supporting rollers for traditional heating is reduced, so that the glass tube can be moved between multiple supporting rollers to complete the possibility of turning over for heating, and the possibility of deformation of the glass tube caused by multiple movements when heated is reduced.

[0023] 2. In the present application, when two support seats are close to the ends of the glass tube at the same time, the support seat drives the rotating seat, the rotating seat drives the sliding seat, the sliding seat drives the supporting block, the supporting block drives the positioning cone head, the positioning cone head is inserted into the glass tube, the glass tube squeezes the positioning cone head, the positioning cone head drives the supporting block to move in the sliding seat, the supporting block squeezes the buffer spring, and under the push of the buffer spring, the positioning cone head is stably inserted into the glass tube, and the glass tube is positioned by the positioning cone head so that the end of the glass tube is located in the middle of the clamping ring 1, so that the clamping rod supports the glass tube wall when clamping the glass tube, thereby achieving the purpose of making it easier for the clamping rod to center the glass tube when clamping the glass tube, and at the same time the positioning cone head supports the glass tube, and at the same time further improving the stability of the glass tube when rotating.

[0024] 3. In the present application, a rotating motor drives one of the rotating wheels on the support seat to rotate, and then the rotating wheel drives the rotating seat by using a transmission belt, and at the same time the rotating wheel drives telescopic rod 1, telescopic rod 1 drives telescopic rod 2, telescopic rod 2 drives another rotating wheel, and then drives another clamping ring 1 to rotate synchronously, thereby achieving the purpose of keeping the two ends of the glass tube clamped on the clamping ring 1 synchronized during rotation. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a first three-dimensional structural schematic diagram of the tube drawing device in the present application; Figure 2 It is a partial three-dimensional structural schematic diagram of the tube drawing device in the present application; Figure 3 It is a schematic diagram of a partially disassembled structure of the tube drawing device in the present application; Figure 4 This application Figure 3 The enlarged schematic diagram at A in the middle; Figure 5 This application Figure 3 The enlarged schematic diagram of point B in the middle; Figure 6 This application Figure 3 Enlarged schematic diagram at point C in the middle.

[0026] Description of reference numerals: 1. Stretching platform; 2. Heating nozzle; 3. Shaping roller; 4. Support roller; 5. Clamping and rotating mechanism; 51. Support frame; 52. Support seat; 53. Clamping assembly; 531. Clamping ring 1; 532. Clamping ring 2; 533. Clamping rod; 534. Sliding block; 535. Sliding groove; 536. Electric telescopic rod; 537. Rotating member; 5371. Rotating seat; 5372. Connecting rod; 5373. Rotating wheel; 5374. Transmission belt; 5375. Telescopic rod 1; 5376. Telescopic rod 2; 5377. Rotating motor; 54. Synchronous moving assembly; 541. Moving motor; 542. Bidirectional threaded rod; 543. Limiting slide rod; 6. Clamping and stretching seat; 7. Electric slide rail; 8. Stable positioning mechanism; 81. Positioning cone head; 82. Support block; 83. Sliding seat; 84. Buffer spring. DETAILED DESCRIPTION

[0027] The following is combined with Figure 1 —6 Provide further details of this application.

[0028] The embodiment of the present application discloses a tube drawing device for ampoule production.

[0029] Reference Figure 1 , Figure 2 and Figure 3 A tube drawing device for ampoule bottle production includes a stretching platform 1, a plurality of supporting rollers 4 are installed on the stretching platform 1, a plurality of toggle rods are fixed on the supporting rollers 4, a plurality of heating nozzles 2 are arranged between adjacent supporting rollers 4, the heating nozzles 2 are installed on the stretching platform 1, a plastic roller is installed on the stretching platform 1, an electric slide rail 7 is installed on one side of the stretching platform 1, a plurality of clamping and stretching seats 6 are slidably connected to the electric slide rail 7, a clamping and rotating mechanism 5 is arranged on the stretching platform 1, and a stabilizing positioning mechanism 8 is arranged on the stretching platform 1.

[0030] When producing ampoules, first, an external loading device moves the glass tube used to produce the ampoules between adjacent support rollers 4, and then uses the heating nozzle 2 to perform preliminary heating. Then, the support roller 4 rotates, and the lever on the support roller 4 allows the glass tube to move between the next adjacent support rollers 4. Then, a rotating shaping roller 3 presses on the glass tube to make the area on the glass tube that needs to be stretched initially concave, and then the lever on the support roller 4 moves the glass tube to move between the next adjacent support rollers 4. Then, the heating nozzle 2 is used to heat the glass tube before stretching. During the heating process, the clamping and rotating mechanism 5 is moved close to the two ends of the glass tube, and the two ends of the glass tube are clamped by the clamping and rotating mechanism 5, and then the glass tube is driven to rotate, so that the glass tube is evenly heated during the heating process. When the clamping and rotating mechanism 5 is close to the end of the glass tube, the clamping and rotating mechanism 5 drives the stabilizing positioning mechanism 8, and the stabilizing positioning mechanism 8 is inserted into the glass tube to position the glass tube. , so that the glass tube is stably clamped, and at the same time, the glass tube is more stable when rotating. After the glass tube is heated, the clamping and rotating mechanism 5 drives the stable positioning mechanism 8 to move away from the glass tube, and then the toggle rod on the supporting roller 4 moves the heated glass tube to a plurality of clamping and stretching seats 6. The clamping and stretching seats 6 clamp the unheated area of ​​the glass tube, and then the plurality of clamping and stretching seats 6 move simultaneously on the electric slide rail 7, so that the heated area of ​​the glass tube is stretched into a thin tube, and then the clamping and stretching seat 6 moves the stretched glass tube to the next process. When the glass tube is heated before being stretched, the clamping and rotating mechanism 5 clamps and rotates the clamped glass tube, and the glass tube is heated and rotated at the same time, so that the glass tube can be heated more evenly, reducing the need to set multiple supporting rollers 4 for traditional heating, allowing the glass tube to move between multiple supporting rollers 4 to complete the possibility of flipping and heating, and reducing the possibility of deformation of the glass tube due to multiple movements when heated.

[0031] Reference Figure 2 , Figure 3 and Figure 4 The clamping and rotating mechanism 5 includes a support frame 51 fixed on the stretching platform 1, and two symmetrical support seats 52 are arranged on the support frame 51. A synchronous moving component 54 is arranged between the two support seats 52 and the support frame 51, and a clamping component 53 is arranged on both support seats 52.

[0032] After the glass tube is shaped by the shaping roller 3, when the glass tube is transferred to the next adjacent supporting rollers 4 for heating, the synchronous component drives the supporting seat 52 on the supporting frame 51, and the clamping component 53 on the supporting seat 52 is close to the glass tube being heated at the same time, and then the clamping components 53 on the two supporting seats 52 clamp the two ends of the glass tube, and then the clamping components 53 on the two supporting seats 52 rotate, so that the clamped glass tube rotates when heated, and directly moves to the clamping and stretching seat 6 after the heating is completed. By allowing the clamping components 53 on the two supporting seats 52 to clamp the two ends of the glass tube when the glass tube is heated after the shaping is completed, and then the clamping components 53 drive the glass tube to rotate, the glass tube can be evenly heated when heated, reducing the need to set multiple supporting rollers 4 after the glass tube is shaped, allowing the glass tube to move between the supporting rollers 4 for turning over and heating, and reducing the possibility of deformation of the glass tube due to multiple movements when heated.

[0033] Reference Figure 3 and Figure 4 The clamping assembly 53 includes a clamping ring 1 531 arranged on the support seat 52, and a clamping ring 2 532 is rotatably connected to the clamping ring 1 531. A plurality of circumferentially distributed clamping rods 533 are arranged on the clamping ring 1 531. The middle part of the clamping rod 533 is rotatably connected to the clamping ring 1 531. A sliding block 534 is fixed to one end of the clamping rod 533 close to the clamping ring 2 532. A sliding groove 535 corresponding to the sliding block 534 is opened on the clamping ring 2 532. The sliding block 534 is located in the sliding groove 535 and is slidably connected to the clamping ring 2 532. An electric telescopic rod 536 is arranged on the clamping ring 1 531. The telescopic end of the electric telescopic rod 536 is rotatably connected to one of the sliding blocks 534. A rotating member 537 is arranged between the clamping ring 1 531 and the support seat 52.

[0034] The two support seats 52 are close to both ends of the glass tube at the same time, the support seats 52 drive the rotating member 537, the rotating member 537 drives the clamping ring 1 531, and then the glass tube enters the clamping ring 1 531, and the electric telescopic rod 536 drives one of the sliding blocks 534 to move in the sliding groove 535, so that the clamping end of the clamping rod 533 approaches the glass tube, and at the same time the sliding block 534 drives the clamping ring 2 532 to rotate on the clamping ring 1 531, and the clamping ring 2 532 drives the other clamping rods 533 , the clamping ends of several clamping rods 533 are in contact with the glass tube at the same time to complete the clamping of the glass tube, and then the rotating member 537 drives the clamping ring 1 531 to rotate, and the clamping ring 1 531 drives the glass tube to rotate. By allowing the glass tube to be located on the clamping ring 1 531, the clamping ring 2 532 is rotated on the clamping ring 1 531, and several clamping rods 533 are in contact with the glass tube at the same time, it is convenient to clamp the glass tube, and it is also convenient to clamp glass tubes of different sizes.

[0035] Reference Figure 3 , Figure 4 and Figure 5 The rotating member 537 includes a rotating seat 5371 rotatably connected to the support seat 52, a plurality of connecting rods 5372 are fixed on the rotating seat 5371, the connecting rods 5372 are fixedly connected to the clamping ring 531, the electric telescopic rod 536 is fixedly connected to one of the connecting rods 5372, a rotating wheel 5373 is rotatably connected to the support seat 52, and a transmission belt 5374 is connected between the rotating wheel 5373 and the rotating seat 5371.

[0036] When the glass tube is clamped in the clamping ring 531, the rotating wheel 5373 is rotated, the rotating wheel 5373 drives the transmission belt 5374, the transmission belt 5374 drives the rotating seat 5371, the rotating seat 5371 drives the connecting rod 5372, and the connecting rod 5372 drives the clamping ring 531. By driving the connecting rod 5372 when the rotating seat 5371 rotates, the connecting rod 5372 drives the clamping ring 531, so that the clamping ring 531 can drive the glass tube to rotate on the supporting seat 52.

[0037] Reference Figure 3 , Figure 4 and Figure 5 A telescopic rod 1 5375 is provided between the two support seats 52, and a telescopic rod 2 5376 is slidably connected to the telescopic rod 1 5375. An external spline is fixed to the telescopic rod 1 5375. One end of the telescopic rod 1 5375 is fixedly connected to one of the rotating wheels 5373, and one end of the telescopic rod 2 5376 is fixedly connected to the other rotating wheel 5373. A rotating motor 5377 is fixed to one of the support seats 52, and the output end of the rotating motor 5377 passes through the support seat 52 and is fixedly connected to the rotating wheel 5373.

[0038] The rotating motor 5377 drives one of the rotating wheels 5373 on the supporting seat 52 to rotate, and then the rotating wheel 5373 drives the rotating seat 5371 using the transmission belt 5374. At the same time, the rotating wheel 5373 drives the telescopic rod 1 5375, the telescopic rod 1 5375 drives the telescopic rod 2 5376, the telescopic rod 2 5376 drives another rotating wheel 5373, and then drives another clamping ring 1 531 to rotate synchronously. By allowing the telescopic rod 1 5375 and the telescopic rod 2 5376 to keep the two rotating wheels 5373 rotating synchronously, the two ends of the glass tube clamped on the clamping ring 1 531 can keep synchronization when rotating.

[0039] Reference Figure 3 and Figure 6The synchronous moving component 54 includes a bidirectional threaded rod 542 rotatably connected to the support frame 51, the bidirectional threaded rod 542 passes through the two support seats 52 and is threadedly connected to the two support seats 52, a limiting slide rod 543 is fixed on the support frame 51, the limiting slide rod 543 passes through the two support seats 52 and is slidably connected to the support seats 52, a moving motor 541 is fixed on the support frame 51, and the output end of the moving motor 541 passes through the support frame 51 and is fixedly connected to the bidirectional threaded rod 542.

[0040] When it is necessary to clamp the glass tube, the moving motor 541 drives the bidirectional threaded rod 542, and the bidirectional threaded rod 542 drives the support seat 52 at the same time, so that the support seat 52 moves synchronously under the support of the limit slide rod 543, and the clamping ring 531 on the support seat 52 is simultaneously sleeved on the glass tube for clamping operation. When the heating of the glass tube is completed, the electric telescopic rod 536 drives the sliding block 534 to reset in the sliding groove 535, so that the clamping rod 533 is away from the glass tube, and then the bidirectional threaded rod 542 moves at the same time, and the bidirectional threaded rod 542 drives the support seat 52 to move away from the glass tube at the same time, and then the glass tube is transferred to the clamping and stretching seat 6. By allowing the support seat 52 to move simultaneously under the action of the bidirectional threaded rod 542, the clamping ring 531 on the support seat 52 is close to or away from the glass tube, so that when the glass tube moves, the obstruction of the clamping ring 531 and the support seat 52 to the glass tube is reduced.

[0041] Reference Figure 3 and Figure 4 The stable positioning mechanism 8 includes a positioning cone head 81 arranged on the rotating seat 5371, a supporting block 82 is fixed on the positioning cone head 81, a sliding seat 83 is slidably connected to the supporting block 82, and the sliding seat 83 is fixedly connected to the rotating seat 5371.

[0042] When the two support seats 52 are close to the end of the glass tube at the same time, the support seat 52 drives the rotating seat 5371, the rotating seat 5371 drives the sliding seat 83, the sliding seat 83 drives the support block 82, the support block 82 drives the positioning cone head 81, the positioning cone head 81 is inserted into the glass tube, and the glass tube is positioned by the positioning cone head 81 so that the end of the glass tube is located in the middle of the clamping ring 531, so that the clamping rod 533 supports the glass tube wall when clamping the glass tube, and by allowing the support seat 52 to approach the glass tube, the support seat 52 drives the positioning cone head 81 to be inserted into the glass tube to support and position the glass tube, so that the clamping rod 533 can make it easier to center the glass tube when clamping the glass tube, and the positioning cone head 81 supports the glass tube, thereby further improving the stability of the glass tube when rotating.

[0043] Reference Figure 3 and Figure 4A buffer spring 84 is provided between the sliding seat 83 and the support block 82, and both ends of the buffer spring 84 are fixedly connected to the sliding seat 83 and the support block 82. When the positioning cone head 81 is inserted into the glass tube, the glass tube squeezes the positioning cone head 81, and the positioning cone head 81 drives the support block 82 to move in the sliding seat 83, and the support block 82 squeezes the buffer spring 84. Under the push of the buffer spring 84, the positioning cone head 81 is stably inserted into the glass tube. When the positioning cone head 81 is inserted into the glass tube, the buffer spring 84 supports the positioning cone head 81, thereby reducing the possibility of the positioning cone head 81 over-squeezing the glass tube.

[0044] Working principle: When producing ampoules, the external loading device first moves the glass tube used to produce the ampoules between adjacent support rollers 4, and then uses the heating nozzle 2 for preliminary heating. Then the support roller 4 rotates, and the lever on the support roller 4 moves the glass tube to the next adjacent support roller 4. Then the rotating shaping roller 3 presses on the glass tube to make the area on the glass tube that needs to be stretched initially concave, and then the lever on the support roller 4 moves the glass tube to the next adjacent support roller 4, and then uses the heating nozzle 2 to heat the glass tube before stretching.

[0045] During the heating process, the moving motor 541 drives the bidirectional threaded rod 542, and the bidirectional threaded rod 542 drives the support seat 52 at the same time, so that the support seat 52 moves synchronously under the support of the limit slide rod 543, and the clamping ring 1 531 on the support seat 52 is simultaneously sleeved on the glass tube, and the electric telescopic rod 536 drives one of the sliding blocks 534 to move in the sliding groove 535, so that the clamping end of the clamping rod 533 approaches the glass tube, and at the same time the sliding block 534 drives the clamping ring 2 532 to rotate on the clamping ring 1 531, and the clamping ring 2 532 drives other clamping rods 533, so that the clamping ends on several clamping rods 533 are simultaneously against the glass tube, so as to complete the clamping of the glass tube, and at the same time the positioning cone head 81 is inserted into the glass tube under the push of the buffer spring 84, and the glass tube is positioned under the positioning cone head 81, so that the glass The end of the tube is located in the middle of the clamping ring 1 531, so that the clamping rod 533 supports the wall of the glass tube when clamping the glass tube, and the rotating motor 5377 drives one of the rotating wheels 5373 on the support seat 52 to rotate, and then the rotating wheel 5373 drives the rotating seat 5371 using the transmission belt 5374, and at the same time, the rotating wheel 5373 drives the telescopic rod 1 5375, the telescopic rod 1 5375 drives the telescopic rod 2 5376, and the telescopic rod 2 5376 drives another rotating wheel 5373, and the two rotating wheels 5373 drive the corresponding rotating seat 5371 to rotate using the transmission belt 5374, and the rotating seat 5371 drives the connecting rod 5372, the connecting rod 5372 drives the clamping ring 1 531, and the clamping ring 1 531 drives the clamping rod 533, so that the glass tube rotates when heated, so that the glass tube is heated evenly.

[0046] After the heating of the glass tube is completed, the electric telescopic rod 536 drives the sliding block 534 to reset, and then the clamping ring 2 532 drives the clamping rod 533 away from the glass tube, and then the moving motor 541 drives the bidirectional threaded rod 542 to reverse, so that the two support seats 52 are away from each other, and then the toggle rod on the support roller 4 moves the heated glass tube to a plurality of clamping and stretching seats 6, and the clamping and stretching seats 6 clamp the unheated area of ​​the glass tube, and then the plurality of clamping and stretching seats 6 move simultaneously on the electric slide rail 7, so that the heated area of ​​the glass tube is stretched into a thin tube, and then the clamping and stretching seat 6 moves the stretched glass tube to the next process.

Claims

1. A tube drawing device for ampoule production, comprising a drawing platform (1), characterized in that: The stretching platform (1) is provided with a plurality of support rollers (4), the support rollers (4) are fixed with a plurality of toggle rods, a plurality of heating nozzles (2) are arranged between adjacent support rollers (4), the heating nozzles (2) are arranged on the stretching platform (1), a shaping roller (3) is arranged on the stretching platform (1), an electric slide rail (7) is arranged on one side of the stretching platform (1), a plurality of clamping and stretching seats (6) are slidably connected to the electric slide rail (7), a clamping and rotating mechanism (5) is arranged on the stretching platform (1), and a stabilizing positioning mechanism (8) is arranged on the stretching platform (1).

2. The tube drawing device for ampoule production according to claim 1, characterized in that: The clamping and rotating mechanism (5) comprises a support frame (51) fixed on the stretching platform (1), the support frame (51) being provided with two symmetrical support seats (52), a synchronous moving component (54) being provided between the two support seats (52) and the support frame (51), and a clamping component (53) being provided on both of the two support seats (52).

3. The tube drawing device for ampoule production according to claim 2, characterized in that: The clamping assembly (53) comprises a clamping ring 1 (531) arranged on a support seat (52), a clamping ring 2 (532) being rotatably connected to the clamping ring 1 (531), a plurality of circumferentially distributed clamping rods (533) being arranged on the clamping ring 1 (531), a middle portion of the clamping rod (533) being rotatably connected to the clamping ring 1 (531), a sliding block (534) being fixed to one end of the clamping rod (533) close to the clamping ring 2 (532), and the clamping ring 2 A sliding groove (535) corresponding to the sliding block (534) is provided on (532); the sliding block (534) is located in the sliding groove (535) and is slidably connected to the clamping ring 2 (532); an electric telescopic rod (536) is provided on the clamping ring 1 (531); a telescopic end of the electric telescopic rod (536) is rotatably connected to one of the sliding blocks (534); and a rotating member (537) is provided between the clamping ring 1 (531) and the support seat (52).

4. The tube drawing device for ampoule production according to claim 3, characterized in that: The rotating member (537) comprises a rotating seat (5371) rotatably connected to the support seat (52); a plurality of connecting rods (5372) are fixed to the rotating seat (5371); the connecting rods (5372) are fixedly connected to the clamping ring (531); the electric telescopic rod (536) is fixedly connected to one of the connecting rods (5372); a rotating wheel (5373) is rotatably connected to the support seat (52); a transmission belt (5374) is transmission-connected between the rotating wheel (5373) and the rotating seat (5371).

5. The tube drawing device for ampoule production according to claim 4, characterized in that: A telescopic rod 1 (5375) is provided between the two support seats (52), a telescopic rod 2 (5376) is slidably connected to the telescopic rod 1 (5375), an external spline is fixed to the telescopic rod 1 (5375), one end of the telescopic rod 1 (5375) is fixedly connected to one of the rotating wheels (5373), one end of the telescopic rod 2 (5376) is fixedly connected to the other rotating wheel (5373), a rotating motor (5377) is fixed to one of the support seats (52), and an output end of the rotating motor (5377) passes through the support seat (52) and is fixedly connected to the rotating wheel (5373).

6. The tube drawing device for ampoule production according to claim 2, characterized in that: The synchronous moving assembly (54) comprises a bidirectional threaded rod (542) rotatably connected to the support frame (51), the bidirectional threaded rod (542) passing through the two support seats (52) and being threadedly connected to the two support seats (52), a limiting sliding rod (543) being fixed on the support frame (51), the limiting sliding rod (543) passing through the two support seats (52) and being slidably connected to the support seats (52), and a moving motor (541) being fixed on the support frame (51), the output end of the moving motor (541) passing through the support frame (51) and being fixedly connected to the bidirectional threaded rod (542).

7. The tube drawing device for ampoule production according to claim 4, characterized in that: The stable positioning mechanism (8) comprises a positioning cone head (81) arranged on a rotating seat (5371), a support block (82) being fixed on the positioning cone head (81), a sliding seat (83) being slidably connected to the support block (82), and the sliding seat (83) being fixedly connected to the rotating seat (5371).

8. The tube drawing device for ampoule production according to claim 7, characterized in that: A buffer spring (84) is provided between the sliding seat (83) and the support block (82), and both ends of the buffer spring (84) are fixedly connected to the sliding seat (83) and the support block (82).

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