A balloon stretching machine

Abstract

The present application relates to a balloon stretching machine, comprising a machine body, on which a forming mechanism, a stretching mechanism and a feeding mechanism are arranged, the forming mechanism is arranged in the middle of the machine body, the forming mechanism comprises an upper forming block, a lower forming block and a first driving assembly, the upper forming block and the lower forming block are respectively slidably connected to the machine body, the sliding directions of the upper forming block and the lower forming block are relatively arranged, the first driving assembly is used to drive the upper forming block and the lower forming block to slide, the stretching mechanism comprises two sliding seats and a second driving assembly, the two sliding seats are respectively slidably connected to the machine body, the two sliding seats are respectively located on both sides of the lower forming block, the two sliding seats are respectively provided with clamping assemblies, the second driving assembly is used to drive the sliding of the two sliding seats, and the feeding mechanism is used to transport the balloon tube to the clamping assemblies of the two sliding seats. While facilitating the preforming of balloons and improving the processing efficiency of preforming of balloons, the processing accuracy of the balloon tube is improved, and the scrap rate of preforming of balloons is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of medical product processing, in particular to a balloon stretching machine. Background Art

[0002] A balloon is a common medical device used to support lesions at the site of blood vessel stenosis. The balloon is usually made of polymer materials with good biocompatibility and elasticity. It uses the property of expanding after being filled with liquid or gas. When the balloon is sent to the site of blood vessel stenosis, it is expanded by injecting liquid such as contrast agent into the balloon, thereby opening the blood vessel and restoring normal blood circulation. However, before blowing the balloon, the balloon tube needs to be pre-processed, which technicians call "preforming."

[0003] The preforming process is extremely important in the balloon production process. The traditional preforming method is to cut a section of balloon tube of suitable length, hold the balloon tube with one hand, and stretch one end of the balloon tube manually with needle-nosed pliers in the other hand, then pass the stretched part of the single balloon tube through a gauge heated to a certain temperature, stretch it to the required length, and then turn the stretched balloon tube 180° and stretch it again using the same method to end.

[0004] In the above technical solution, the balloon tube is preformed by stretching manually, which results in low precision of the balloon tube and high labor intensity, low processing efficiency and high scrap rate, resulting in low efficiency of the balloon tube stretching process. Summary of the invention

[0005] In order to improve the processing efficiency of balloon preforming, the present application provides a balloon stretching machine.

[0006] The present application provides a balloon stretching machine that adopts the following technical solution:

[0007] A balloon stretching machine comprises a machine body, on which are provided a forming mechanism for forming a balloon tube, a stretching mechanism for stretching the balloon tube and a feeding mechanism, the forming mechanism being arranged in the middle part of the machine body, the forming mechanism comprising an upper forming block, a lower forming block and a first driving assembly, the upper forming block and the lower forming block are respectively slidably connected to the machine body, and the sliding directions of the upper forming block and the lower forming block are relatively arranged, the first driving assembly is used to drive the upper forming block and the lower forming block to slide simultaneously, the stretching mechanism comprises two sliding seats and a second driving assembly, the two sliding seats are respectively slidably connected to the machine body, the two sliding seats are respectively located on both sides of the lower forming block, and the two sliding seats are respectively provided with clamping assemblies for clamping the balloon tube, the second driving assembly is used to respectively drive the sliding of the two sliding seats, and the feeding mechanism is used to transport the balloon tube to the clamping assemblies of the two sliding seats.

[0008] By adopting the above technical scheme, first, the feeding mechanism conveys the balloon tube to the clamping mechanisms of the two sliding seats, so that the two groups of clamping mechanisms clamp the two ends of the balloon tube in the axial direction, and the second driving component drives the two sliding seats to move to pull the balloon tube to a tensioned state, and then the first driving component drives the upper forming block and the lower forming block to move until their forming surfaces abut against the circumferential side of the balloon tube and heat the balloon tube, and then the second driving component drives any sliding seat to move to pull the balloon tube through the forming surface and then stretch it into shape. After one side of the balloon tube is stretched and formed, the upper forming block and the lower forming block move to the opposite side, and the two sliding seats simultaneously slide to move the unstretched end of the balloon tube in the axial direction to the other side of the upper forming block and the lower forming block, and finally the other sliding seat moves to pull the other end of the balloon tube in the axial direction through the forming surface and stretch it into shape; while facilitating the balloon preforming process and improving the processing efficiency of the balloon preforming, the processing accuracy of the balloon tube is improved, and the scrap rate of the balloon preforming is reduced.

[0009] Preferably, the clamping assembly includes an upper clamping plate, a lower clamping plate and a second cylinder, and the upper clamping plate and the lower clamping plate are respectively rotatably connected to the sliding seat, and second gears are respectively arranged on the rotation axes of the upper clamping plate and the lower clamping plate, and the two second gears are arranged in meshing with each other. A tension spring is provided on the upper clamping plate, and the tension spring always drives the upper clamping plate to rotate toward the side away from the lower clamping plate. The second cylinder is fixedly connected to the sliding seat, and when the piston rod of the second cylinder is extended, the piston rod of the second cylinder abuts against the upper clamping plate and drives the upper clamping plate to rotate toward the side of the lower clamping plate, and the feeding mechanism is used to transport the two ends of the balloon tube in the axial direction to between the two groups of upper clamping plates and lower clamping plates.

[0010] By adopting the above technical scheme, when the piston rod of the second cylinder is extended, the piston rod of the second cylinder abuts against the upper clamping plate and drives the upper clamping plate to rotate toward the lower clamping plate, and causes the first gear to rotate. Through the meshing connection of the two second gears, the two second gears are rotated in opposite directions, thereby causing the lower clamping plate to rotate toward the upper clamping plate, and clamping the balloon tube that is fed between the upper clamping plate and the lower clamping plate; when the piston rod of the second cylinder is retracted, the tension spring pulls the upper clamping plate to rotate toward the side away from the lower clamping plate, thereby causing the lower clamping plate to rotate toward the side away from the lower clamping plate, so that the upper clamping plate and the lower clamping plate are opened, and the feeding mechanism conveys the balloon tube to between the upper clamping plate and the lower clamping plate.

[0011] Preferably, it also includes a shearing component, which is used for shearing the feeding end of the balloon tube. The shearing component includes two blades and a third driving component, and the two sliding seats are respectively the first sliding seat and the second sliding seat. The two blades are respectively slidably connected to the first sliding seat, and the sliding directions of the two blades are relatively arranged. The third driving component is used to drive the sliding of the two blades. The feeding mechanism is arranged on the first sliding seat. When the feeding mechanism is feeding, the third driving component drives the two blades to slide toward opposite sides to make the balloon tube move between the two blades. When the feeding mechanism finishes feeding, the third driving component drives the two blades to slide toward opposite sides to cut the balloon tube.

[0012] By adopting the above technical solution, the two blades are driven to slide by the third driving component. During the loading process, the third driving component drives the two blades to slide toward opposite sides, so that the balloon tube can move between the two blades; when the loading is completed, the third driving component drives the two blades to slide toward opposite sides, cutting off the balloon tube while limiting the subsequent part of the balloon tube, reducing the possibility that the subsequent part of the balloon tube affects the balloon tube on the clamping component.

[0013] Preferably, the loading mechanism includes a loading plate and several groups of conveying wheels, the loading plate is arranged on a first slide, and the several groups of conveying wheels are rotatably connected to the loading plate, each group of conveying wheels includes two conveying wheels, and the two conveying wheels in the same group are respectively abutted on both side surfaces of the balloon tube in the radial direction, and the two conveying wheels in the same group rotate in opposite directions, and the third driving assembly is simultaneously used to drive the rotation of several groups of conveying wheels.

[0014] By adopting the above technical solution, the third driving component drives the rotation of several groups of conveying wheels, and the balloon tube is moved on the loading plate and moved to the two groups of clamping components for clamping through the friction between the several groups of conveying wheels and the radial side surfaces of the balloon tube.

[0015] Preferably, the third driving assembly includes a slide rail, and a plurality of rubber wheels are rotatably connected to the loading plate along a rotation direction perpendicular to the rotation direction of the conveying wheel. The plurality of rubber wheels are rotatably connected to the loading plate, and universal couplings are respectively provided on the plurality of rubber wheels. The plurality of rubber wheels correspond to a plurality of groups of conveying wheels, respectively. The two conveying wheels in the same group are coaxially and fixedly connected with a third gear, and the two third gears in the same group are meshed and connected with each other, and the two ends of the universal coupling are coaxially and fixedly connected to the rubber wheel and any third gear in the same group, and the slide rail is slidably connected to the machine body, and when the slide rail slides toward the rubber wheel side to the extreme position, the plurality of rubber wheels respectively abut against the slide rail.

[0016] By adopting the above technical solution, when the slide rail slides and abuts against a number of rubber wheels, the first slide seat slides, causing the number of rubber wheels to roll on the slide rail, and transmission is performed through the universal coupling, so that the number of third gears rotate, and the other third gear meshed with them rotates in the opposite direction, so that the conveying wheels located on both sides of the balloon tube rotate in the opposite direction, and the balloon tube is conveyed, completing the loading of the balloon tube; when the slide rail slides to the side away from the rubber wheel, the number of rubber wheels disengage from the slide rail, and the movement of the first slide seat does not cause the balloon tube on the loading plate to move.

[0017] Preferably, the two blades are respectively provided with a spring, and the two springs always drive the two blades to slide toward opposite sides. The two blades are respectively provided with a plurality of connecting ropes. The first slide seat is rotatably connected to a fourth gear, and a winding groove is provided on the fourth gear. The ends of the connecting ropes away from the blades are simultaneously wound in the winding groove. The first slide seat is slidably connected to a second rack along the sliding direction of the slide rail, and the second rack is meshed with the fourth gear, and the second rack is located on the sliding path of the slide rail.

[0018] By adopting the above technical solution, when the slide rail slides toward the side of the rubber wheel, the sliding of the slide rail drives the second rack abutting against the slide rail to move, and through the meshing connection between the second rack and the fourth gear, the fourth gear rotates, so that the connecting rope is wound around the winding groove, and the two blades are pulled to slide toward opposite sides through the connecting rope; when the slide rail slides toward the side away from the rubber wheel, the second rack slides with the slide rail due to gravity, so that the connecting rope escapes from the winding groove, and the two springs respectively drive the two blades to slide toward opposite sides to cut the balloon tube.

[0019] Preferably, it also includes a seesaw and an abutment block, wherein the abutment block is slidably connected to the machine body along a sliding direction perpendicular to the sliding direction of the second slide, and the abutment block is located on the sliding path of the second slide, the seesaw is swingably connected to the machine body, and the slide rail and the abutment block are respectively abutted at both ends of the seesaw in the length direction, and when the second slide slides to abut on the abutment block, the abutment block slides toward one side of the seesaw and drives the seesaw to rotate.

[0020] By adopting the above technical scheme, when the second slide seat slides to abut against the abutment block, the abutment block slides toward one side of the seesaw, causing the end of the seesaw close to the abutment block to swing down, and the end of the seesaw close to the slide rail to swing up, and drive the slide rail to slide toward the side away from the seesaw until it abuts against several rubber wheels. At this time, the sliding of the first slide seat causes the rubber wheel to roll on the slide rail, that is, the loading work is completed while the second slide seat and the first slide seat slide toward the opposite side; when the second slide seat moves out of the range of the abutment block, one side of the slide rail slides toward one side of the seesaw due to gravity, and the second rack slides down due to gravity at the same time, and several rubber wheels no longer abut against the slide rail, that is, at this time, the end of the seesaw close to the slide rail swings down, and the end of the seesaw close to the abutment block swings up, so that when the subsequent first slide seat moves to stretch the balloon tube, it will not cause movement of the balloon tube on the loading plate.

[0021] The technical effects of the present invention are mainly reflected in the following aspects:

[0022] 1. The present invention provides a forming mechanism and a stretching mechanism. First, the feeding mechanism conveys the balloon tube to the clamping mechanisms of the two sliding seats, so that the two groups of clamping mechanisms clamp the two ends of the balloon tube in the axial direction, and the second driving component drives the two sliding seats to move and pull the balloon tube to a tensioned state. Then, the first driving component drives the upper forming block and the lower forming block to move until their forming surfaces abut against the circumferential side surfaces of the balloon tube and heat the balloon tube. Then, the second driving component drives any sliding seat to move to pull the balloon tube through the forming surface and then stretch it into a shape. After one side of the balloon tube is stretched and formed, the upper forming block and the lower forming block move toward opposite sides. The two sliding seats simultaneously slide to move the unstretched end of the balloon tube in the axial direction to the other side of the upper forming block and the lower forming block. Finally, the other sliding seat moves to pull the other end of the balloon tube in the axial direction through the forming surface and stretch it into a shape. This facilitates the preforming process of the balloon and improves the processing efficiency of the preforming process of the balloon, while improving the processing accuracy of the balloon tube and reducing the scrap rate of the preforming process of the balloon.

[0023] 2. The present invention sets a third driving component, and when the slide rail slides, the sliding of the slide rail drives the second rack abutting on the slide rail to move, and the meshing connection between the second rack and the fourth gear makes the fourth gear rotate, so that the connecting rope is wound around the winding groove, thereby pulling the two blades to slide toward opposite sides through the connecting rope; when the slide rail slides to abut against a plurality of rubber wheels, the first slide seat slides, so that the plurality of rubber wheels roll on the slide rail, and transmits through the universal coupling to rotate the plurality of third gears, and makes another third gear meshed with it rotate in the opposite direction, so that the conveying wheels located on both sides of the balloon tube rotate in the opposite direction and convey the balloon tube; when the slide rail slides toward the side away from the rubber wheel, the second rack slides with the slide rail due to gravity, so that the connecting rope escapes from the winding groove, and the two springs respectively drive the two blades to slide toward the opposite side to cut the balloon tube, and at this time, the plurality of rubber wheels are separated from the slide rail, and the movement of the first slide seat does not cause the balloon tube on the loading plate to move;

[0024] When the second slide seat is moved out of the range of the abutment block, one side of the slide rail slides toward the side of the seesaw due to gravity, and the second rack slides down due to gravity at the same time, and the several rubber wheels no longer abut against the slide rail, that is, at this time, one end of the seesaw close to the slide rail swings down, and one end of the seesaw close to the abutment block swings up, so that when the subsequent first slide seat moves to stretch the balloon tube, the balloon tube on the feeding plate will not be caused to move. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the present application.

[0026] Figure 2 It is a schematic diagram of the structure of the feeding mechanism of the embodiment of the present application.

[0027] Figure 3 is along Figure 2 Enlarged view of point A in the middle.

[0028] Figure 4 It is a schematic diagram of the structure of the third drive component of the embodiment of the present application.

[0029] Figure 5 It is a schematic diagram of the seesaw structure of an embodiment of the present application.

[0030] Figure 6 is along Figure 5 Enlarged view of point B in the middle.

[0031] Figure 7 Schematic diagram of the first slide structure in an embodiment of the present application.

[0032] Figure 8 It is a schematic diagram of the structure of the loading plate of the embodiment of the present application.

[0033] Fig. 9 It is a schematic diagram of the structure of the shearing component of an embodiment of the present application.

[0034] Explanation of the accompanying drawings: 1. body; 2. forming mechanism; 21. upper forming block; 22. lower forming block; 23. first driving assembly; 3. stretching mechanism; 31. sliding seat; 32. first sliding seat; 33. second sliding seat; 34. second driving assembly; 4. clamping assembly; 41. upper clamping plate; 42. lower clamping plate; 43. second cylinder; 44. second gear; 45. tension spring; 5. feeding mechanism; 51. feeding plate; 52. extension plate; 53. conveying wheel; 54. rubber wheel; 55. universal coupling; 56. third gear; 6. shearing assembly; 61. blade; 62. spring; 63. connecting rope; 64. fourth gear; 641. winding groove; 65. second rack; 7. third driving assembly; 71. slide rail; 72. seesaw; 73. abutment block; 8. controller. DETAILED DESCRIPTION

[0035] The following is combined with Figure 1-Figure 9 The present application is further described in detail to make the technical solution of the present application easier to understand and grasp.

[0036] The embodiment of the present application discloses a balloon stretching machine.

[0037] Reference Figure 1 , Figure 2 and Figure 5 A balloon stretching machine of the present embodiment includes a body 1, on which a molding mechanism 2 for molding a balloon tube, a stretching mechanism 3 for stretching the balloon tube and a feeding mechanism 5 are installed, the molding mechanism 2 is installed in the middle of the body 1, the molding mechanism 2 includes an upper molding block 21 with a molding surface, a lower molding block 22 with a molding surface and a first driving component 23, the upper molding block 21 and the lower molding block 22 are respectively slidably connected to the body 1, the sliding directions of the upper molding block 21 and the lower molding block 22 are relatively arranged, and the upper molding block 21 and the lower molding block 22 are respectively installed with electric heating wires on the side close to the molding surface for heating the upper molding block 21 and the lower molding block 22, thereby heating the balloon tube in contact with one side of the molding surface, and the first driving component 23 is used to drive the upper molding block 21 and the lower molding block 22 to slide simultaneously.

[0038] Reference Figure 1 , Figure 2 and Figure 5The first driving assembly 23 includes a first cylinder and two first racks, the two first racks are fixedly connected to the upper forming block 21 and the lower forming block 22, and the two first racks are arranged opposite to each other. The machine body 1 is provided with a first gear, and the two first racks are meshed and connected to the two sides of the gear in a radial direction. The first cylinder is fixedly connected to the machine body 1, and one end of the piston rod of the first cylinder is fixedly connected to any first rack. When the first cylinder drives any first rack to move, the meshing connection between the first gear and the two first racks causes the first gear to rotate and causes the other first rack meshed with it to move together, so that the two first racks are meshed and connected to the two sides of the gear in a radial direction, so that the moving directions of the two first racks are opposite, so that the sliding directions of the upper forming block 21 and the lower forming block 22 respectively fixedly connected to the two first racks are opposite.

[0039] Reference Figure 3 and Figure 4 The stretching mechanism 3 includes two sliding seats 31 and a second driving assembly 34. The two sliding seats 31 are respectively slidably connected to the body 1, so that the two sliding seats 31 are respectively a first sliding seat 32 and a second sliding seat 33. The first sliding seat 32 and the second sliding seat 33 are respectively located on both sides of the width direction of the lower forming block 22, and the first sliding seat 32 and the second sliding seat 33 are respectively installed with a clamping assembly 4 for clamping the balloon tube. The second driving assembly 34 is used to drive the sliding of the first sliding seat 32 and the second sliding seat 33 respectively. The feeding mechanism 5 is used to transport the two ends of the balloon tube in the axial direction to the clamping assemblies 4 of the first sliding seat 32 and the second sliding seat 33 respectively.

[0040] Reference Figure 2 and Figure 5 The second driving assembly 34 includes two motors and two lead screws, the two lead screws are rotatably connected to the machine body 1, the two lead screws are respectively passed through and threadedly connected to the two sliding seats 31, the two motors correspond to the two lead screws, the two motors are respectively fixedly connected to the machine body 1, and one end of the output shaft of the two motors is coaxially and fixedly connected to the two lead screws. When the two motors are started, the two motors drive the two lead screws to rotate, and through the threaded connection between the two lead screws and the two sliding seats 31, the two sliding seats 31 slide along the axial direction of the corresponding lead screws.

[0041] Reference Figure 4 and Figure 5First, the feeding mechanism 5 conveys the balloon tube to the clamping mechanisms of the two sliding seats 31, so that the two sets of clamping mechanisms clamp the two ends of the balloon tube in the axial direction, and the second driving assembly 34 drives the two sliding seats 31 to move to pull the balloon tube to a tensioned state, and then the first driving assembly 23 drives the upper forming block 21 and the lower forming block 22 to move until their forming surfaces abut against the circumferential side of the balloon tube and heat the balloon tube, and then the second driving assembly 34 drives any sliding seat 31 to move to pull the balloon tube through the forming surface and then stretch it. Forming, after one side of the balloon tube is stretched and formed, the upper forming block 21 and the lower forming block 22 move to the opposite side, and the two sliding seats 31 slide simultaneously to move the unstretched end of the balloon tube in the axial direction to the other side of the upper forming block 21 and the lower forming block 22, and finally the other sliding seat 31 moves to pull the other end of the balloon tube in the axial direction through the forming surface and stretch it into shape; while facilitating the balloon preforming process and improving the processing efficiency of the balloon preforming, the processing accuracy of the balloon tube is improved, and the scrap rate of the balloon preforming is reduced.

[0042] Reference Figure 4 and Figure 7 The clamping assembly 4 includes an upper clamping plate 41, a lower clamping plate 42 and a second cylinder 43. The upper clamping plate 41 and the lower clamping plate 42 are respectively rotatably connected to the sliding seat 31. The upper clamping plate 41 and the lower clamping plate 42 are respectively coaxially and fixedly connected with a second gear 44 on the rotation axis, and the two second gears 44 are meshed with each other. A tension spring 45 is installed on the upper clamping plate 41. The two ends of the tension spring 45 are respectively fixedly connected to the upper clamping plate 41 and the first sliding seat 32. The tension spring 45 always drives the upper clamping plate 41 to rotate toward the side away from the lower clamping plate 42. The second cylinder 43 is fixedly connected to the sliding seat 31. When the piston rod of the second cylinder 43 is extended, the piston rod of the second cylinder 43 abuts against the upper clamping plate 41 and drives the upper clamping plate 41 to rotate toward the side of the lower clamping plate 42. The feeding mechanism 5 is used to transport the two ends of the balloon tube in the axial direction to between the two groups of upper clamping plates 41 and lower clamping plates 42.

[0043] Reference Figure 4 and Figure 7 When the piston rod of the second cylinder 43 is extended, the piston rod of the second cylinder 43 abuts against the upper clamping plate 41 and drives the upper clamping plate 41 to rotate toward the side of the lower clamping plate 42, and causes the second gear 44 to rotate. Through the meshing connection of the two second gears 44, the two first gears are rotated in opposite directions, so that the lower clamping plate 42 rotates toward the side of the upper clamping plate 41, and the balloon tube fed between the upper clamping plate 41 and the lower clamping plate 42 is clamped; when the piston rod of the second cylinder 43 is retracted, the tension spring 45 pulls the upper clamping plate 41 to rotate toward the side away from the lower clamping plate 42, so that the lower clamping plate 42 rotates toward the side away from the lower clamping plate 42, so that the upper clamping plate 41 and the lower clamping plate 42 are opened, and the feeding mechanism 5 transports the balloon tube to between the upper clamping plate 41 and the lower clamping plate 42.

[0044] Reference Figure 7 and Fig. 9 , and also includes a shearing component 6, which is used to shear the feeding end of the balloon tube. The shearing component 6 includes two blades 61 and a third driving component 7. The two blades 61 are respectively slidably connected to the first slide seat 32, and the sliding directions of the two blades 61 are relatively arranged. The third driving component 7 is used to drive the sliding of the two blades 61. The feeding mechanism 5 is arranged on the first slide seat 32. When the feeding mechanism 5 is feeding, the third driving component 7 drives the two blades 61 to slide toward opposite sides, so that the balloon tube moves between the two blades 61. When the feeding mechanism 5 finishes feeding, the third driving component 7 drives the two blades 61 to slide toward opposite sides to shear the balloon tube.

[0045] Reference Figure 7 and Fig. 9 The two blades 61 are driven to slide by the third driving assembly 7. During the feeding process, the third driving assembly 7 drives the two blades 61 to slide toward opposite sides, so that the balloon tube can move between the two blades 61; when the feeding is completed, the third driving assembly 7 drives the two blades 61 to slide toward opposite sides, cutting off the balloon tube while limiting the subsequent part of the balloon tube, thereby reducing the possibility that the subsequent part of the balloon tube affects the balloon tube on the clamping assembly 4.

[0046] Reference Figure 7 and Figure 8 The feeding mechanism 5 includes a feeding plate 51 and a group of conveying wheels 53. The feeding plate 51 is fixedly connected to the first slide 32, and an extension plate 52 is also fixedly connected to the feeding plate 51. The extension plate 52 is used to place the balloon tube. A group of conveying wheels 53 is rotatably connected to the feeding plate 51. Each group of conveying wheels 53 includes two conveying wheels 53. The two conveying wheels 53 in the same group are respectively in contact with the two radial side surfaces of the balloon tube, and the two conveying wheels 53 in the same group rotate in opposite directions. The third driving assembly 7 is also used to drive the rotation of the group of conveying wheels 53. The rotation of the two conveying wheels 53 in the same group is driven by the third driving assembly 7. The friction between the two conveying wheels 53 in the same group and the two radial side surfaces of the balloon tube causes the balloon tube to move on the feeding plate 51 and move to the two groups of clamping assemblies 4 for clamping.

[0047] Reference Figure 8 and Fig. 9The third driving assembly 7 includes a slide rail 71, which is slidably connected to the machine body 1. A rubber wheel 54 is rotatably connected to the loading plate 51 along a direction perpendicular to the rotation direction of the conveying wheel 53. Universal couplings 55 are respectively installed on the rubber wheels 54. The two conveying wheels 53 in the same group are respectively coaxially and fixedly connected with third gears 56, and the two third gears 56 in the same group are meshed and connected with each other. According to the rotation direction of the rubber wheel 54 and the conveying wheel 53, the two ends of the universal coupling 55 are respectively coaxially and fixedly connected to the rubber wheel 54 and one of the third gears 56 in the same group. A plurality of springs 62 are respectively fixedly connected to the two blades 61, and the two ends of the plurality of springs 62 are respectively abutted on the first sliding seat 31 and the blade 61. 62 always drives the two blades 61 to slide toward the opposite side, and the two blades 61 are respectively fixedly connected with a connecting rope 63, and a fourth gear 64 is rotated on the first slide seat 32, and a winding groove 641 is opened on the circumferential side of the fourth gear 64, and the ends of several connecting ropes 63 away from the blades 61 are simultaneously wound in the winding groove 641, and a second rack 65 is slidably connected to the first slide seat 32 along the sliding direction of the slide rail 71, and the end of the second rack 65 close to the slide rail 71 always abuts against the slide rail 71, the second rack 65 is meshed with the fourth gear 64, and one end of the second rack 65 abuts against the slide rail 71, and when the slide rail 71 slides to the extreme position toward the side of the rubber wheel 54, several rubber wheels 54 abut against the slide rail 71 respectively.

[0048] Reference Figure 3 , Figure 4 and Figure 6 When the slide rail 71 slides, the sliding of the slide rail 71 drives the second rack 65 abutting on the slide rail 71 to move, and the meshing connection between the second rack 65 and the fourth gear 64 causes the fourth gear 64 to rotate, so that the connecting rope 63 is wound around the winding groove 641, so that the two blades 61 are pulled to slide to the opposite side through the connecting rope 63; when the slide rail 71 slides to abut against the plurality of rubber wheels 54, the first slide seat 32 slides, so that the plurality of rubber wheels 54 roll on the slide rail 71, and the transmission is carried out through the universal coupling 55, so that the plurality of third gears 56 rotate, and the plurality of third gears 56 are connected to the plurality of rubber wheels 54. The other third gear 56 meshingly connected thereto rotates in the opposite direction, thereby causing the conveying wheels 53 located on both sides of the balloon tube to rotate in the opposite direction and convey the balloon tube to complete the loading of the balloon tube; when the slide rail 71 slides toward the side away from the rubber wheel 54, the second rack 65 slides along with the slide rail 71 due to gravity, causing the connecting rope 63 to escape from the winding groove 641, and the two springs 62 respectively drive the two blades 61 to slide toward the opposite side to cut the balloon tube, and at this time, several rubber wheels 54 are detached from the slide rail 71, and the movement of the first slide seat 32 does not cause the balloon tube on the loading plate 51 to move.

[0049] Reference Figure 4 and Figure 5, also includes a seesaw 72 and a butt block 73, the butt block 73 is slidably connected to the body 1 along a sliding direction perpendicular to the sliding direction of the second slide 33, and the butt block 73 is located on the sliding path of the second slide 33, the seesaw 72 is swingably connected to the body 1, the slide rail 71 and the butt block 73 are respectively butted against the two ends of the seesaw 72 in the length direction, when the second slide 33 slides to butt against the butt block 73, the butt block 73 slides toward one side of the seesaw 72 and drives the seesaw 72 to rotate.

[0050] Reference Figure 4 and Figure 5 When the second slide 33 slides to abut against the abutment block 73, the abutment block 73 slides toward one side of the seesaw 72, causing the end of the seesaw 72 close to the abutment block 73 to swing down, and the end of the seesaw 72 close to the slide rail 71 to swing up, and drive the slide rail 71 to slide toward the side away from the seesaw 72 until it abuts against a plurality of rubber wheels 54. At this time, the sliding of the first slide 32 causes the rubber wheels 54 to roll on the slide rail 71, that is, the second slide 33 and the first slide 32 slide toward the opposite side. When the second slide 33 moves out of the range of the abutment block 73, one side of the slide rail 71 slides toward the side of the seesaw 72 due to gravity, and the second rack 65 slides down due to gravity at the same time, and the rubber wheels 54 no longer abut against the slide rail 71, that is, at this time, the end of the seesaw 72 close to the slide rail 71 swings down, and the end of the seesaw 72 close to the abutment block 73 swings up, so that when the subsequent first slide 32 moves to stretch the balloon tube, the balloon tube on the loading plate 51 will not be caused to move.

[0051] Reference Figure 1 , Figure 2 and Figure 5 A controller 8 is also installed on the body 1. The controller 8 is used to control the operating status of each mechanism and component, so that each mechanism and component can work according to the predetermined process and parameters, and ensure the accuracy of the operation of the mechanism and component, so as to accurately complete the preforming of the balloon, facilitate the balloon preforming processing and improve the processing efficiency of the balloon preforming, while improving the processing accuracy of the balloon tube and reducing the scrap rate of the balloon preforming.

[0052] Of course, the above are only typical examples of the present application. In addition, the present application may have many other specific implementation methods. All technical solutions formed by equivalent replacement or equivalent transformation fall within the scope of protection required by the present application.

Claims

1. A balloon stretching machine, comprising a machine body (1), characterized in that: The machine body (1) is provided with a forming mechanism (2) for forming the balloon tube, a stretching mechanism (3) for stretching the balloon tube, and a feeding mechanism (5); the forming mechanism (2) is arranged in the middle of the machine body (1); the forming mechanism (2) comprises an upper forming block (21), a lower forming block (22), and a first driving component (23); the upper forming block (21) and the lower forming block (22) are respectively slidably connected to the machine body (1); and the sliding directions of the upper forming block (21) and the lower forming block (22) are arranged relative to each other; the first driving component (23) is used to drive the upper forming block (21) to move relative to the lower forming block (22); 21) and the lower forming block (22) slide simultaneously, the stretching mechanism (3) comprises two sliding seats (31) and a second driving assembly (34), the two sliding seats (31) are respectively slidably connected to the machine body (1), the two sliding seats (31) are respectively located on both sides of the lower forming block (22), and the two sliding seats (31) are respectively provided with a clamping assembly (4) for clamping the balloon tube, the second driving assembly (34) is used to drive the sliding of the two sliding seats (31), and the feeding mechanism (5) is used to transport the balloon tube to the clamping assemblies (4) of the two sliding seats (31); It also includes a shearing assembly (6), which is used to shear the feeding end of the balloon tube. The shearing assembly (6) includes two blades (61) and a third driving assembly (7), so that the two sliding seats (31) are respectively a first sliding seat (32) and a second sliding seat (33), and the two blades (61) are respectively slidably connected to the first sliding seat (32); The feeding mechanism (5) comprises a feeding plate (51) and a plurality of groups of conveying wheels (53); the feeding plate (51) is arranged on a first slide seat (32); and the plurality of groups of conveying wheels (53) are rotatably connected to the feeding plate (51). The third driving assembly (7) comprises a slide rail (71), a plurality of rubber wheels (54) are rotatably connected to the loading plate (51) along a rotation direction perpendicular to the rotation direction of the conveying wheel (53), the plurality of rubber wheels (54) are rotatably connected to the loading plate (51), a universal coupling (55) is provided on the plurality of rubber wheels (54), the plurality of rubber wheels (54) correspond to a plurality of groups of conveying wheels (53), two conveying wheels (53) in the same group are coaxially and fixedly connected to a third gear (56), and the two third gears (56) in the same group are meshed and connected to each other, the two ends of the universal coupling (55) are coaxially and fixedly connected to the rubber wheel (54) and any third gear (56) in the same group, the slide rail (71) is slidably connected to the machine body (1), and when the slide rail (71) slides toward one side of the rubber wheel (54) to an extreme position, the plurality of rubber wheels (54) abut against the slide rail (71) respectively; The two blades (61) are respectively provided with a spring (62), and the two springs (62) are respectively used to drive the two blades (61) to slide. The two blades (61) are respectively provided with a plurality of connecting ropes (63). The first slide seat (32) is rotatably connected with a fourth gear (64), and a winding groove (641) is provided on the fourth gear (64). One end of the plurality of connecting ropes (63) away from the blades (61) is simultaneously wound in the winding groove (641). The first slide seat (32) is slidably connected with a second rack (65) along the sliding direction of the slide rail (71), and the second rack (65) is meshed with the fourth gear (64). The second rack (65) is located on the sliding path of the slide rail (71), and one end of the second rack (65) close to the slide rail (71) is always in contact with the slide rail (71).

2. A balloon stretching machine according to claim 1, characterized in that: The clamping assembly (4) comprises an upper clamping plate (41), a lower clamping plate (42) and a second cylinder (43); the upper clamping plate (41) and the lower clamping plate (42) are respectively rotatably connected to the sliding seat (31); second gears (44) are respectively arranged on the rotation axes of the upper clamping plate (41) and the lower clamping plate (42); the two second gears (44) are meshed with each other; a tension spring (45) is arranged on the upper clamping plate (41); the tension spring (45) always drives the upper clamping plate The plate (41) rotates toward the side away from the lower clamping plate (42), and the second cylinder (43) is fixedly connected to the sliding seat (31). When the piston rod of the second cylinder (43) is extended, the piston rod of the second cylinder (43) abuts against the upper clamping plate (41) and drives the upper clamping plate (41) to rotate toward the side of the lower clamping plate (42). The feeding mechanism (5) is used to transport the two ends of the balloon tube in the axial direction to between the two groups of upper clamping plates (41) and lower clamping plates (42).

3. A balloon stretching machine according to claim 1, characterized in that: The sliding directions of the two blades (61) are arranged relative to each other, the third driving component (7) is used to drive the two blades (61) to slide, the feeding mechanism (5) is arranged on the first slide seat (32), when the feeding mechanism (5) is in the feeding process, the third driving component (7) drives the two blades (61) to slide towards opposite sides, so that the balloon tube moves between the two blades (61), when the feeding mechanism (5) finishes feeding, the third driving component (7) drives the two blades (61) to slide towards opposite sides, so as to cut the balloon tube.

4. The balloon stretching machine according to claim 1, characterized in that: Each group of the conveying wheels (53) comprises two conveying wheels (53), and the two conveying wheels (53) in the same group are respectively in contact with the two radial side surfaces of the balloon tube, and the two conveying wheels (53) in the same group rotate in opposite directions. The third driving assembly (7) is used to drive the rotation of several groups of conveying wheels (53) at the same time.

5. The balloon stretching machine according to claim 1, characterized in that: The invention also comprises a seesaw (72) and an abutment block (73), wherein the abutment block (73) is slidably connected to the machine body (1) along a sliding direction perpendicular to the sliding direction of the second slide seat (33), and the abutment block (73) is located on the sliding path of the second slide seat (33), the seesaw (72) is swingably connected to the machine body (1), the slide rail (71) and the abutment block (73) are respectively abutted against two ends of the seesaw (72) in the length direction, and when the second slide seat (33) slides to abut against the abutment block (73), the abutment block (73) slides toward one side of the seesaw (72) and drives the seesaw (72) to rotate.

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