Catheter film heat shrink machine

Abstract

The present invention discloses a catheter coating heat shrink machine, wherein a movable pulling module is movably provided at the upper end of the frame, the movable pulling module includes a pulling die, the pulling die is switched between a clamping state and a loose state by a second cylinder, a first fixed die is provided on the frame, the movable pulling module is arranged between the first fixed die and the heat shrink machine, and is moved back and forth between the first fixed die and the heat shrink machine by a driving member, and a shaping module fixed to the upper end of the frame is provided at the feed port of the heat shrink machine. The present invention relates to the field of thermal processing technology. The present invention makes suitable molds according to the size of the pipe, and the speed of arranging it into a hexagon is fast and high in precision. The defective rate of cutting in the rear section is low after the shape is correct, and employees do not get burned, thereby greatly improving work efficiency.

Description

Technical Field

[0001] The invention relates to the technical field of thermal processing, in particular to a catheter coating heat shrinking machine. Background Art

[0002] Metal tubes have a wide range of applications. They can be used in medical interventional surgeries and are also widely used in the fields of electronics, aerospace and military. Depending on the different fields of use, the tubes are cut to different sizes and lengths.

[0003] The thin metal tube is formed by stretching after the tube body is heat-processed. The production process is complex and high-precision. This product is a high-precision product. Sometimes it takes more than several months to complete a tube. The thin metal tube produced by this process can be several meters long, and the wall is thin and easy to bend. It is necessary to be extremely careful during the transportation process after production, and the tube needs to be cut during the later processing. Considering the cost and transportation issues, multiple tubes need to be packaged together, and a heat shrink machine is needed to seal them. The plastic film is wrapped around multiple groups of tubes, and then sealed. This method is also a common process on the market.

[0004] Since the pipes are thin and thin-walled, workers are now processing them manually when sealing multiple pipes. The smallest pipe diameter is only about 1mm and the length is about 2m. First, 7 to 60 small stainless steel pipes are manually arranged into hexagons, and then the shrink film on the pipes is scalded with hot water above 80 degrees Celsius. The problems with this are: 1. It takes time to manually arrange the pipes into hexagons, and the shape is irregular, which directly leads to a high scrap rate when the pipes are cut later; 2. The high-temperature water comes out of the faucet, and the pipes are manually rotated and sealed, which shrinks very unevenly and easily burns the arms; 3. The efficiency is low. Therefore, a heat shrinking machine is needed to shape multiple groups of pipes first, and then seal them. Summary of the invention

[0005] The object of the present invention is to provide a catheter film-covering heat shrinking machine, which can shape and assemble a plurality of tubes and then perform plastic sealing, thereby achieving high packaging efficiency and facilitating high-precision cutting.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a catheter coating heat shrink machine, comprising a frame, a heat shrink machine is fixedly provided on the upper end of the frame, a movable pulling module is movably provided on the upper end of the frame, the movable pulling module comprises a pulling mold, the pulling mold is transformed between a clamping state and a loose state by a second cylinder, a first fixed mold is provided on the frame, the movable pulling module is arranged between the first fixed mold and the heat shrink machine, and is moved back and forth between the first fixed mold and the heat shrink machine by a driving member, a shaping module fixed on the upper end of the frame is provided at the feed inlet of the heat shrink machine, the shaping module comprises a shaping mold, the first fixed mold and the shaping mold are opened and closed by a first cylinder and a third cylinder respectively, the first fixed mold, the pulling mold and the shaping mold are all provided with an upper mold and a lower mold, and when the upper mold and the lower mold are combined, a polygonal groove is formed between them.

[0007] Multiple groups of pipes are limited and fixed by the polygonal grooves of each group of molds, and then coated and packaged by a heat shrink machine, so that the multiple groups of pipes are shaped into specified shapes, forming efficient coating and facilitating the cutting and production of high-precision products.

[0008] In order to ensure the stability of the heat coating of the pipe, preferably, the heating channel of the heat shrinking machine is coaxially arranged with the polygonal grooves of the first fixed mold, the pulling mold and the shaping mold to ensure that the pipe will not bend.

[0009] The polygonal grooves of the first fixed mold and the shaping mold cannot lock the tube. It is necessary to ensure that the tube can be pulled by the pulling mold while being coated. When the upper and lower molds are merged, the polygonal groove of the pulling mold needs to lock the tube for pulling. Preferably, the diameter of the polygonal groove of the pulling mold is smaller than that of the first fixed mold and the shaping mold.

[0010] In order to ensure the pulling accuracy and stability of the movable pulling module, preferably, the driving member includes a servo motor arranged on a frame, a screw rod is rotatably provided at the output end of the servo motor, the movable pulling module also includes a movable frame, the second cylinder and the pulling mold are fixed on the movable frame, a guide rail is fixed on the upper end surface of the frame, the bottom of the movable frame is slidably installed on the guide rail, and the bottom of the movable frame is rotatably connected to the screw rod.

[0011] In order to ensure the stability of the shape of the pipe when it enters the heat shrink machine, preferably, a front end limiting part is provided between the movable pulling module and the shaping module, and the front end limiting part includes a second fixed mold, and the second fixed mold is provided with an upper mold and a lower mold, and a polygonal groove of the same size as the shaping mold is provided therebetween, and the upper mold and the lower mold of the second fixed mold are opened and closed by a fourth cylinder.

[0012] In order to prevent the movable pulling module from excessively displacing forwards and backwards, ensure that no collision occurs with the first fixed mold and the heat shrinking machine, and complete precise displacement activities, preferably, limit sensors are fixedly provided on the frame, and the limit sensors are distributed at both ends of the movable pulling module travel.

[0013] After the tube is film-coated and packaged, the front end of the tube needs to be lifted to prevent the tube end from being bent due to pressure downward. Preferably, the end of the first fixed mold away from the movable pulling mold group is provided with a bracket fixed on the frame.

[0014] Compared with the prior art, the catheter coating heat shrinking machine of the present invention has a mold with a polygonal groove to shape multiple groups of pipes, and heat shrinks and coats them through a heat shrinking machine, and then pulls the heat-coated pipes through a movable pulling module to achieve automatic coating of multiple groups of pipes, and multiple groups of pipes can be shaped into specified shapes before coating.

[0015] The present invention makes a suitable mold according to the size of the pipe, and arranges it into a hexagonal shape with high speed and high accuracy. The defective rate of the rear-stage cutting is low when the shape is correct, and the employees will not be burned, thereby greatly improving the work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0017] Figure 1 It is a structural schematic diagram of the present invention from a first viewing angle;

[0018] Figure 2 It is a structural schematic diagram of the second viewing angle of the present invention.

[0019] In the attached figure:

[0020] 1. Frame; 2. First fixed mold; 21. First cylinder; 3. Servo motor; 31. Screw rod; 32. Guide rail; 4. Movable pulling module; 41. Second cylinder; 42. Movable frame; 43. Pulling mold; 5. Shaping module; 51. Third cylinder; 52. Fixed bracket; 53. Shaping mold; 6. Front end limiter; 61. Fourth cylinder; 62. Second fixed mold; 7. Bracket; 8. Heat shrinking machine; 9. Limit sensor. DETAILED DESCRIPTION

[0021] 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.

[0022] See also Figure 1-2 As shown, the present invention provides a technical solution: a catheter coating heat shrink machine, including a frame 1, a heat shrink machine 8 is fixedly provided on the upper end of the frame 1, and interconnected heating channels are provided at both ends of the heat shrink machine. A movable pulling module 4 is movably provided on the upper end of the frame 1, and the movable pulling module 4 includes a pulling mold 43. The pulling mold 43 is transformed between a clamping state and a loose state by a second cylinder 41. 43 is provided with an upper mold and a lower mold. The upper mold is displaced up and down by 41, and the lower mold is fixedly arranged below the upper mold.

[0023] A first fixed mold 2 is provided on the frame 1. The first fixed mold 2 has an upper mold and a lower mold, which are distributed left and right. The first cylinder 21 is used to open and close the first mold left and right. The first cylinder 21 has two groups, which are distributed left and right.

[0024] The movable pulling module 4 is arranged between the first fixed mold 2 and the heat shrinking machine 8, and is moved back and forth between the first fixed mold 2 and the heat shrinking machine 8 by a driving member. A limit sensor 9 is fixedly provided on the frame 1, and the limit sensors 9 are distributed at both ends of the travel of the movable pulling module 4. The driving member includes a servo motor 3 arranged on the frame 1, and the servo motor 3 is arranged below the first fixed mold 2. The first cylinder 21 is supported by a bracket, and the first fixed mold 2 is arranged above the servo motor 3. A screw rod is provided at the output end of the servo motor 3. 31, the movable pulling module 4 also includes a movable frame 42, the second cylinder 41 and the pulling mold 43 are fixed on the movable frame 42, the second cylinder 41 is fixed above the movable frame 42, the upper end surface of the frame 1 is fixed with a guide rail 32, the bottom of the movable frame 42 is slidably installed on the guide rail 32, and the bottom of the movable frame 42 is rotatably connected to the screw rod 31. When the servo motor 3 drives the screw rod 31 to rotate, it can drive the movable frame 42 to slide on the guide rail 32, thereby driving the movable frame 42 to move between the first fixed mold 2 and the heat shrink machine 8.

[0025] A shaping module 5 fixed to the upper end of a frame 1 is provided at the feed port of the heat shrink machine 8. The shaping module 5 includes a shaping mold 53. The shaping mold 53 is opened and closed by a third cylinder 51. The third cylinder 51 is fixed to the top of the frame 1 through a fixed bracket 52. The upper mold of the shaping mold 53 is connected to the output end of the third cylinder 51, and the lower mold of the shaping mold 53 is fixed to the lower part of the fixed bracket 52.

[0026] The first fixed mold 2, the pulling mold 43 and the forming mold 53 are all provided with an upper mold and a lower mold, and when the upper mold and the lower mold are combined, a polygonal groove is formed between them. In this embodiment, the polygonal groove is specifically an equidistant hexagon, which can position multiple groups of pipes to form a state with a cross-section of an equidistant hexagon.

[0027] Among them, the heating channel of the heat shrink machine 8 is coaxially arranged with the polygonal grooves of the first fixed mold 2, the pulling mold 43 and the forming mold 53. The diameter of the polygonal groove of the pulling mold 43 is smaller than that of the first fixed mold 2 and the forming mold 53. Based on the ability to clamp the pipes after heat coating packaging, the polygonal grooves of the first fixed mold 2 and the forming mold 53 have a certain gap when clamping the pipes, so that the coated pipes can be pulled.

[0028] A front end limiting portion 6 is provided between the movable pulling module 4 and the shaping module 5. The front end limiting portion 6 includes a second fixed mold 62. The second fixed mold 62 is provided with an upper mold and a lower mold, which are distributed on the left and right, and a polygonal groove of the same size as the shaping mold 53 is provided therebetween. The upper mold and the lower mold of the second fixed mold 62 are opened and closed by a fourth cylinder 61. The fourth cylinder 61 is provided with two groups, which are distributed on the left and right.

[0029] The end of the first fixed mold 2 away from the movable pulling mold set 4 is provided with a bracket 7 fixed on the frame 1 for lifting the pipe after heat lamination packaging.

[0030] The specific working principle of the present invention will be described in detail below:

[0031] The first step is to manually gather a specified number of pipes and adjust the packaging sleeve (plastic material) on the specified number of pipes;

[0032] In the second step, the sleeved pipe end is placed on the polygonal groove on the lower mold of the shaping mold 53, and the controller controls the third cylinder 51 to merge the upper mold and the lower mold of the shaping mold 53. The hexagonal groove (in this embodiment) gathers the group of pipes adjusted with the packaging sleeves and shapes them into an equidistant hexagon. The pipes are pushed into the polygonal groove of the second fixed mold 62, and the fourth cylinder 61 is controlled to limit the pipes. The pipes are continuously pushed into the heat shrinking machine 8 for heat shrinking film packaging until the movable pulling module 4 is pushed to the position closest to the heat shrinking machine 8.

[0033] In the third step, the initial position of the movable pulling module 4 is positioned by the limit sensor 9, which is closest to the discharge port of the heat shrink machine 8, and the upper mold of the pulling mold 43 is in an open state. When starting to work, the second cylinder 41 is controlled to merge the upper and lower molds of the pulling mold 43, and the hexagonal groove of the pulling mold 43 clamps the packaged pipe. The servo motor 3 is controlled to drive the screw rod 31 to rotate, and the movable pulling module 4 drives the pipe to move toward the first fixed mold 2. The limit sensor 9 positions the movable pulling module 4, and the movable pulling module 4 stops in front of the first fixed mold 2. The second cylinder 41 opens the upper mold of the pulling mold 43, and the movable pulling module 4 is reset by the servo motor 3 to perform the next repeated action. When the packaged pipe is placed at the first fixed mold 2, the first cylinder 21 drives the first fixed mold 2 to merge and limit the pipe. The repeated work of the movable pulling module 4 is combined with the heat shrink machine 8 to realize automatic shaping and packaging of the pipe.

[0034] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A catheter coating heat shrinking machine, comprising a frame (1), a heat shrinking machine (8) being fixedly arranged on the upper end of the frame (1), characterized in that: A movable pulling module (4) is movably provided at the upper end of the frame (1), and the movable pulling module (4) includes a pulling mold (43). The pulling mold (43) is switched between a clamping state and a loosening state by a second cylinder (41). A first fixed mold (2) is provided on the frame (1), and the movable pulling module (4) is arranged between the first fixed mold (2) and the heat shrinking machine (8), and is moved between the first fixed mold (2) and the heat shrinking machine (8) by a driving member. The heat shrinking machine (8) is moved back and forth, and a shaping die set (5) fixed to the upper end of the frame (1) is provided at the feed port of the heat shrinking machine (8), and the shaping die set (5) includes a shaping die (53), and the first fixed die (2) and the shaping die (53) are opened and closed by the first cylinder (21) and the third cylinder (51) respectively, and the first fixed die (2), the pulling die (43) and the shaping die (53) are all provided with an upper die and a lower die, and when the upper die and the lower die are combined, a polygonal groove is formed between them; The driving member comprises a servo motor (3) arranged on a frame (1), a screw rod (31) is rotatably provided at the output end of the servo motor (3), the movable pulling die set (4) further comprises a movable frame (42), the second cylinder (41) and the pulling die (43) are fixed on the movable frame (42), a guide rail (32) is fixed on the upper end surface of the frame (1), the bottom of the movable frame (42) is slidably mounted on the guide rail (32), and the bottom of the movable frame (42) is rotatably connected to the screw rod (31); A front end limit portion (6) is provided between the movable pulling die set (4) and the shaping die set (5), and the front end limit portion (6) comprises a second fixed die (62), and the second fixed die (62) is provided with an upper die and a lower die, and a polygonal groove of the same size as the shaping die (53) is provided between them, and the upper die and the lower die of the second fixed die (62) are opened and closed by a fourth cylinder (61).

2. The catheter coating heat shrinking machine according to claim 1, characterized in that: The heating channel of the heat shrinking machine (8) is coaxially arranged with the polygonal grooves of the first fixed mold (2), the pulling mold (43) and the shaping mold (53).

3. The catheter coating heat shrinking machine according to claim 1, characterized in that: The diameter of the polygonal groove of the pulling die (43) is smaller than the polygonal grooves of the first fixed die (2) and the shaping die (53).

4. The catheter coating heat shrinking machine according to claim 1, characterized in that: The frame (1) is fixedly provided with a limit sensor (9), and the limit sensor (9) is distributed at both ends of the travel of the movable pulling module (4).

5. The catheter coating heat shrinking machine according to claim 1, characterized in that: The end of the first fixed mold (2) facing away from the movable pulling mold set (4) is provided with a bracket (7) fixed on the frame (1).

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