Contact type neck stretcher

Abstract

The utility model relates to a contact type neck stretcher which comprises a base. The heating device is arranged on the base, a heating hole is formed in the heating device, and the heating hole is suitable for conducting radial opening and closing movement so as to heat a penetrating pipe blank; and the clamping and stretching mechanisms are arranged on the base and located on the two sides of the heating device, and the clamping and stretching mechanisms are suitable for clamping the ends of the pipe blanks and axially stretching the pipe blanks. According to the contact type neck stretching machine, the heating hole of the heating device can be formed in the radial direction, so that the heating hole can be in full contact with a tube blank for heating, the tube blank is heated uniformly, the neck of a catheter is stretched more uniformly, and the quality of a balloon catheter is improved.

Description

Technical Field

[0001] The utility model relates to the field of medical machinery, in particular to a contact type neck stretching machine. Background Art

[0002] Balloon catheters are commonly used medical consumables. Balloon catheters are formed by heating and stretching at two neck positions on the balloon tube blank.

[0003] In the existing balloon neck stretching machine, see the prior patent: CN217968369U-High-efficiency Balloon Catheter Neck Stretching Machine. The heating of the tube blank mainly relies on the forming mold to heat the tube blank. The diameter of the heating hole in the forming mold is fixed and can only adapt to balloons of a single diameter. When balloons of different diameters need to be stretched, the forming mold needs to be replaced, resulting in high costs. In addition, when the tube blank is heated in the heating hole of the forming mold, the tube blank cannot be exactly in the center of the heating hole. Sometimes a certain distance will be left between the outer wall of the tube blank and the heating hole. The circumferential spacing of the tube blank in the heating hole is difficult to be equal, which leads to uneven circumferential heating of the tube blank during the heating process, which ultimately affects the quality of the tube blank stretching. Utility Model Content

[0004] The technical problem to be solved by the utility model is: to overcome the deficiencies of the prior art and provide a contact-type neck stretching machine to solve the problem that the circumferential spacing between the tube blank and the heating hole is uneven during the heating process of the tube blank, thus affecting the stretching quality of the tube blank neck.

[0005] The technical solution adopted by the utility model to solve its technical problems is:

[0006] A contact type neck stretching machine is provided, comprising

[0007] Base;

[0008] A heating device is arranged on the base, and the heating device is provided with a heating hole, and the heating hole is suitable for radial opening and closing movement to heat the passing tube blank;

[0009] A pair of clamping and stretching mechanisms are arranged on the base and located on both sides of the heating device. The clamping and stretching mechanisms are suitable for clamping the ends of the tube blank and axially stretching the tube blank.

[0010] Furthermore, the clamping and stretching mechanism comprises

[0011] The first linear module is mounted on the base plate;

[0012] The pneumatic clamp is arranged on the slider of the first linear module. The pneumatic clamp is suitable for clamping the end of the tube blank. The first linear module is suitable for driving the pneumatic clamp to move axially.

[0013] Furthermore, the heating device comprises

[0014] A pair of mounting bases are fixedly arranged on the base;

[0015] A rotating frame is installed between the two mounting seats and forms a rotational fit with the mounting seats;

[0016] A plurality of heating fins, each of which is distributed in a circumferential shape, and the heating surfaces of each heating fin are spliced ​​to form a heating hole, a connecting shaft and a swing shaft are respectively arranged at both ends of the heating fin, and a plurality of shaft holes and swing holes are respectively provided on the mounting seat, the heating fins are connected to the shaft holes on the mounting seat via the connecting shafts, and the swing shaft extends from the swing hole and is connected to the rotating frame;

[0017] The driving mechanism is connected to the rotating frame and is suitable for driving the rotating frame to rotate back and forth between the two mounting seats. The rotating frame drives each heating fin to rotate synchronously via the swing shaft, thereby adjusting the aperture size of the heating hole.

[0018] Furthermore, the rotating frame includes

[0019] A pair of rotating disks, the rotating disks are arranged in the disk holes on the mounting base, the rotating disks are arranged to rotate in the disk holes, a plurality of swing grooves are arranged on the inner side of the rotating disks, one end of the swing shaft is connected to the heating fins, and the other end extends into the swing grooves;

[0020] The upper connecting rod and the lower connecting rod, both ends of the connecting rod are fixedly connected to the rotating disk, so that the two connecting rods and the two rotating disks rotate as a whole;

[0021] The lower connecting rod is connected with the driving mechanism.

[0022] Furthermore, the driving mechanism includes

[0023] A second linear module, wherein the second linear module is fixedly arranged on the base;

[0024] The connecting block is arranged on the slider of the second linear module. The connecting block is provided with a connecting hole which is a long slot hole, and the lower connecting rod passes through the connecting hole.

[0025] Furthermore, the heating fin includes a horizontal fin and a pair of vertical fins;

[0026] An electric heating rod is arranged in the transverse piece, and the swing shaft and the connecting shaft are connected with the vertical side.

[0027] The beneficial effects of the utility model are:

[0028] The contact-type neck stretching machine of the utility model has a heating hole of a heating device which can be radially opened so that the heating hole can fully contact and heat the tube blank, so that the tube blank is heated evenly, the catheter neck is stretched more evenly, and the quality of the balloon catheter is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] The utility model is further described below in conjunction with the accompanying drawings.

[0030] Figure 1 It is a schematic diagram of the contact-type neck stretching machine of the utility model;

[0031] Figure 2 is a schematic diagram of the clamping and stretching mechanism;

[0032] Figure 3 is a schematic diagram of a heating device;

[0033] Figure 4 This is a schematic diagram of the heating device (without one side of the turntable);

[0034] Figure 5 is a schematic diagram of the rotating frame and each heating fin;

[0035] Figure 6 is a schematic diagram of a single heating fin;

[0036] Figure 7 It is a structural diagram between two connecting rods and a single turntable;

[0037] Figure 8 It is a distribution diagram of each heating fin in a circular shape;

[0038] Fig. 9 is a schematic diagram of the driving mechanism;

[0039] Among them, 1. base, 2. clamping and stretching mechanism, 21. first linear module, 22. pneumatic clamping jaws;

[0040] 3. Mounting seat, 31. Axis hole, 32. Swing hole;

[0041] 4. rotating frame, 41. turntable, 411. swing slot, 42. upper connecting rod, 43. lower connecting rod;

[0042] 5. heating fins, 51. horizontal fins, 52. vertical fins;

[0043] 61, connecting shaft, 62, swing shaft;

[0044] 7. Driving mechanism, 71. Second linear module, 72. Connecting block, 721. Connecting hole. DETAILED DESCRIPTION

[0045] In order to make the purpose, technical solution and advantages of the embodiments of the utility model clearer, the technical solution of the utility model will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0046] The present application provides a contact neck stretching machine, which is described in detail below. It should be noted that the description order of the following embodiments does not limit the preferred order of the embodiments of the present application. In the following embodiments, the description of each embodiment has its own emphasis. For parts that are not described in detail in a certain embodiment, please refer to the relevant description of other embodiments.

[0047] In order to solve the technical problem in the prior art that the circumferential spacing between the tube blank and the heating hole is uneven during the tube blank heating process, which affects the tube blank neck stretching quality, an embodiment of the present application provides a contact-type neck stretching machine, which is described in detail below.

[0048] like Figures 1 to 9 As shown, a contact type neck stretching machine includes

[0049] Base 1;

[0050] A heating device is arranged on the base 1, and the heating device is provided with a heating hole, and the heating hole is suitable for radial opening and closing movement to heat the passing tube blank;

[0051] A pair of clamping and stretching mechanisms 2 are arranged on the base 1 and located on both sides of the heating device. The clamping and stretching mechanisms 2 are suitable for clamping the ends of the tube blank and axially stretching the tube blank.

[0052] Specifically, as an optional implementation in this embodiment, Figure 2 As shown, the clamping and stretching mechanism 2 includes

[0053] The first linear module 21 is mounted on the bottom plate;

[0054] The pneumatic clamp 22 is arranged on the slider of the first linear module 21. The pneumatic clamp 22 is suitable for clamping the end of the tube blank. The first linear module 21 is suitable for driving the pneumatic clamp 22 to move axially.

[0055] Specifically, as an optional implementation in this embodiment, Figures 2 to 6 As shown, the heating device comprises

[0056] A pair of mounting seats 3 are fixedly arranged on the base 1;

[0057] The rotating frame 4 is installed between the two mounting seats 3 and forms a rotational fit with the mounting seats 3;

[0058] A plurality of heating fins 5, each of which is distributed in a circumferential shape, and the heating surfaces of each of the heating fins 5 are spliced ​​to form a heating hole, and a connecting shaft 61 and a swing shaft 62 are respectively provided at both ends of the heating fin 5, and a plurality of shaft holes 31 and swing holes 32 are respectively provided on the mounting seat 3, and the heating fin 5 is connected to the shaft hole 31 on the mounting seat 3 via the connecting shaft 61, and the swing shaft 62 extends from the swing hole 32 and is connected to the rotating frame 4;

[0059] The driving mechanism 7 is connected to the rotating frame 4 and is suitable for driving the rotating frame 4 to rotate back and forth between the two mounting seats 3. The rotating frame 4 drives each heating fin 5 to rotate synchronously via the swing shaft 62, thereby adjusting the aperture size of the heating hole.

[0060] Specifically, as an optional implementation in this embodiment, Figures 5 to 8 As shown, the rotating frame 4 includes

[0061] A pair of rotating disks 41, the rotating disks 41 are arranged in the disk holes on the mounting base 3, the rotating disks 41 are arranged to rotate in the disk holes, a plurality of swing grooves 411 are provided on the inner side of the rotating disks 41, one end of the swing shaft 62 is connected to the heating fins 5, and the other end extends into the swing grooves 411;

[0062] The upper connecting rod 42 and the lower connecting rod 43, both ends of the connecting rods are fixedly connected to the rotating disk 41, so that the two connecting rods and the two rotating disks 41 rotate as a whole;

[0063] The lower connecting rod 43 is connected to the driving mechanism 7 .

[0064] A circular hole is provided in the middle of the rotating disk 41 for the tube blank to pass through.

[0065] like Figure 8 As shown, the heating hole formed by each heating fin 5 is a polygonal structure. As the turntable 41 swings, each heating fin 5 expands and contracts the heating hole. The size of the heating hole can be controlled by controlling the rotation angle of the turntable 41.

[0066] Specifically, as an optional implementation in this embodiment, Fig. 9 As shown, the driving mechanism 7 includes

[0067] A second linear module 71, wherein the second linear module 71 is fixedly arranged on the base 1;

[0068] The connecting block 72 is disposed on the slider of the second linear module 71 . The connecting block 72 is provided with a connecting hole 721 . The connecting hole 721 is a long slot hole, and the lower connecting rod 43 passes through the connecting hole 721 .

[0069] Specifically, as an optional implementation in this embodiment, Figure 6 As shown, the heating fin 5 includes a horizontal piece 51 and a pair of vertical pieces 52;

[0070] An electric heating rod is arranged inside the transverse piece 51 , and the swing shaft 62 and the connecting shaft 61 are connected to the vertical side.

[0071] In this embodiment, bearings are provided on both the swing shaft 62 and the connecting shaft 61 , and the swing shaft 62 and the connecting shaft 61 are respectively matched with the mounting seat 3 and the swing groove 411 through the bearings.

[0072] In this embodiment, the first linear module 21 and the second linear module 71 are both existing products, and both are electric linear modules.

[0073] When the heating device is operating: the second linear module 71 drives the connecting block 72 to move, the connecting block 72 drives the lower connecting rod 43 to move, the lower connecting rod 43 drives the turntable 41 to rotate, and when the turntable 41 rotates, it drives each swing shaft 62 to move, thereby driving each heating fin 5 between the two mounting seats 3 to rotate, so as to control the size of the heating hole. When the heating block contacts the tube blank, the tube blank is evenly heated all around, and is then pulled by the clamping and stretching mechanisms 2 on both sides, so that the neck of the balloon is very uniform and of high quality.

[0074] When the contact neck stretching machine is in operation, the tube blank passes through the heating device and is clamped at both ends by the pneumatic clamps 22. The position on the tube blank that needs to be heated and stretched is in the heating hole. The heating device heats the tube blank, and then the two first linear modules 21 drive the stretching, and the balloon tube neck is stretched.

[0075] The various devices selected in this application (components whose specific structures are not described) are all universal standard parts or components known to technical personnel in this field, and their structures and principles can be known to technical personnel through technical manuals or through conventional experimental methods.

[0076] In the description of the embodiments of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0077] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0078] In the several embodiments provided in the present application, it should be understood that the disclosed systems, devices and methods can be implemented in other ways. The device embodiments described above are merely schematic. For example, the division of the units is only a logical function division. There may be other division methods in actual implementation. For example, multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some communication interfaces, and the indirect coupling or communication connection of devices or units can be electrical, mechanical or other forms.

[0079] The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0080] In addition, each functional unit in each embodiment of the present utility model may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.

[0081] Based on the above ideal embodiments of the utility model, the relevant staff can make various changes and modifications without deviating from the technical concept of the utility model through the above description. The technical scope of the utility model is not limited to the content of the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. A contact type neck stretching machine, characterized in that: include Base (1); A heating device is arranged on the base (1), the heating device is provided with a heating hole, and the heating hole is suitable for radial opening and closing movement to heat the pipe blank passing through; A pair of clamping and stretching mechanisms (2) are arranged on the base (1) and located on both sides of the heating device, wherein the clamping and stretching mechanisms (2) are suitable for clamping the ends of the tube blank and axially stretching the tube blank; The heating device comprises A pair of mounting seats (3) are fixedly arranged on the base (1); A rotating frame (4) is installed between the two mounting seats (3) and forms a rotational fit with the mounting seats (3); A plurality of heating fins (5), each of which is distributed in a circular shape, and the heating surfaces of each of which are spliced ​​to form a heating hole. A connecting shaft (61) and a swing shaft (62) are respectively arranged at both ends of the heating fin (5), and a plurality of shaft holes (31) and swing holes (32) are respectively provided on the mounting seat (3). The heating fins (5) are connected to the shaft holes (31) on the mounting seat (3) via the connecting shaft (61), and the swing shaft (62) extends from the swing hole (32) and is connected to the rotating frame (4); A driving mechanism (7) is connected to the rotating frame (4) and is suitable for driving the rotating frame (4) to rotate back and forth between the two mounting seats (3). The rotating frame (4) drives each heating fin (5) to rotate synchronously via a swing shaft (62), thereby adjusting the size of the heating hole diameter.

2. The contact type neck stretching machine according to claim 1, characterized in that: The clamping and stretching mechanism (2) comprises A first linear module (21) is mounted on the base plate; The pneumatic clamp (22) is arranged on the slider of the first linear module (21). The pneumatic clamp (22) is suitable for clamping the end of the tube blank. The first linear module (21) is suitable for driving the pneumatic clamp (22) to move axially.

3. The contact type neck stretching machine according to claim 1, characterized in that: The rotating frame (4) comprises A pair of rotating disks (41), wherein the rotating disks (41) are arranged in disk holes on the mounting seat (3), and the rotating disks (41) are arranged to rotate in the disk holes, and a plurality of swing grooves (411) are provided on the inner side surface of the rotating disk (41), and one end of the swing shaft (62) is connected to the heating fin (5), and the other end extends into the swing groove (411); An upper connecting rod (42) and a lower connecting rod (43), both ends of the connecting rods are fixedly connected to the rotating disk (41) respectively, so that the two connecting rods and the two rotating disks (41) rotate as a whole; The lower connecting rod (43) is connected to the driving mechanism (7).

4. The contact type neck stretching machine according to claim 3, characterized in that: The driving mechanism (7) comprises A second linear module (71), wherein the second linear module (71) is fixedly arranged on the base (1); The connecting block (72) is arranged on the slider of the second linear module (71). The connecting block (72) is provided with a connecting hole (721), the connecting hole (721) is a long slot hole, and the lower connecting rod (43) passes through the connecting hole (721).

5. The contact type neck stretching machine according to claim 1, characterized in that: The heating fin (5) comprises a transverse fin (51) and a pair of vertical fins (52); An electric heating rod is arranged inside the transverse piece (51), and the swing shaft (62) and the connecting shaft (61) are connected to the vertical side.

Images