CN221909384U - Draw frock - Google Patents

Abstract

The utility model relates to the technical field of machining devices, in particular to a shrinkage tube tool. The utility model discloses a shrinkage tube tool, which comprises a base, wherein a plurality of grooves for sliding blocks along the radial direction are formed in the base, a detachable shrinkage chuck is arranged on the inner side of each sliding block, a driving structure for pushing all sliding blocks to synchronously feed along the grooves is arranged on the outer side of each sliding block, and all shrinkage chucks can be encircled to form a circular ring with a hole in the middle; counter bores for installing elastic pieces are formed in the inner sides of the sliding blocks, blocking blocks are arranged in the base, and two ends of the elastic pieces are respectively contacted with the blocking blocks and the sliding blocks. The technical problem solved by the utility model is to develop a shrinkage pipe tool which can stably and efficiently shrink the diameter of a metal pipe, can meet the shrinkage pipe requirements of different diameters and can automatically reset.

Description

A tube shrinking tool

Technical Field

The utility model relates to the technical field of mechanical processing devices, in particular to a tube shrinking tool.

Background Art

Currently, gastroesophageal diseases are becoming more and more common year by year. Conventional diagnostic and treatment techniques such as gastroscopy and gastrointestinal angiography can only detect most organic lesions of the gastroesophageal tract and some motility diseases. However, they cannot systematically, accurately and intuitively describe and evaluate the vast majority of gastroesophageal motility disorders such as gastroesophageal reflux disease and achalasia. In addition, since there are more than a hundred atypical symptoms of gastroesophageal reflux disease, it is difficult to distinguish them in the early stages. It is very easy to make misdiagnosis through conventional techniques, which aggravates the pain of patients.

With the development of many new high-precision technologies, high-resolution manometry (HRM) has become the main means of diagnosing such diseases. High-resolution manometry (HRM) is a new type of manometry technology developed in the 1990s based on traditional esophageal manometry. This technology uses dense pressure sensors to synchronously collect pressure data of the entire esophagus, and converts it into a three-dimensional spatial image through computer software. It can quickly and efficiently reflect the contraction function of the upper and lower esophageal sphincters and the esophageal body. High-resolution esophageal manometry (HRM) technology is now considered to be the main diagnostic method for diagnosing motility disorders, and it is also the "gold standard" for the diagnosis of certain esophageal motility disorders. It can also provide a basis for the selection of treatment methods and evaluate disease treatment and prevention.

According to the design of pressure measurement principle, the pressure measuring device can be designed into two types: water pressure measuring device and solid-state pressure measuring device. The main difference between the two is the way of sensing pressure. The water pressure measuring device is composed of a stable pressure source, a sensor, an electronic amplifier and a multi-channel water-infused pressure measuring catheter. The liquid is used as the pressure transmission medium to change the pressure in the pressure sensor connected to it. Although the water-infused pressure measuring catheter is cheap, due to the limitation of principle and process, the infusion detection is easily affected by the outside world, and has the disadvantages of few channels, small measurement range, poor accuracy, and cannot be used for a long time.

The solid-state pressure measuring device is a solid-state pressure measuring catheter. The solid-state pressure measuring catheters commonly used on the market are divided into two types: capacitive pressure sensors and resistive pressure sensors. Both have difficulties such as complex processes and high costs, and there are problems such as small pressure measuring angles, poor accuracy, easy disconnection, single functions, and narrow coverage. Therefore, improving measurement accuracy, reducing production costs, and improving the production efficiency, product quality, and customer experience comfort of the catheter are technical problems that need to be solved urgently by technical personnel in this field, especially reducing the production difficulty of reducing the diameter of the metal round tube used in the solid-state pressure measuring catheter, and improving the yield and efficiency. As shown in Figure 1, it is a structural diagram of the metal round tube before and after shrinking. A metal round tube with a reduced diameter at one end is required. In order to meet the accuracy required by the pressure measuring catheter, the metal round tube needs to be wrinkled after shrinking and the appearance meets the requirements. The commonly used method to reduce the diameter of metal round tubes is to use a clamp with grooves (crimping pliers) to manually squeeze the tube through the two-petal grooves to achieve the purpose of reducing the diameter. Ordinary clamps (crimping pliers) and other tools have poor precision, and the shape of the extruded metal cylinder will be wrinkled, which cannot achieve the ideal shape, and the manual control of the extrusion will result in inconsistent extrusion positions. Alternatively, the purpose of extrusion can be achieved through a large hydraulic tube compressor, but the equipment cost of large hydraulic tube compressors is relatively high, and customized equipment is required. The processing is difficult and it is not convenient to quickly switch the diameter of the metal cylinder/tube that needs to be shrunk. In addition, after each tube shrinking is completed, how to restore the tube shrinking structure and carry out the next tube shrinking work is also a technical problem that needs to be solved.

Therefore, those skilled in the art are committed to developing a tube shrinking tool that can stably and efficiently shrink the diameter of a metal tube, can meet the needs of shrinking tubes of different diameters, and can automatically reset.

Utility Model Content

In view of the above-mentioned defects of the prior art, the utility model discloses a tube shrinking tool, and the technical problem to be solved is to provide a tube shrinking tool that can stably and efficiently shrink the diameter of metal tubes, can meet the needs of shrinking tubes of different diameters, and can automatically reset.

To achieve the above-mentioned purpose, the utility model provides a tube shrinking tool, including a base, the base is provided with a plurality of radial grooves for sliding sliders, a detachable shrinking chuck is installed on the inner side of each slider, and a driving structure is provided on the outer side of the slider for pushing all the sliders to feed synchronously along the grooves, and all the shrinking chucks can be combined to form a circular ring with a hole in the middle; a countersunk hole for installing an elastic member is provided on the inner side of each slider, and a blocking block is provided inside the base, and the two ends of the elastic member are respectively in contact with the blocking block and the slider.

Preferably, the number of the grooves is at least two, and the grooves are evenly distributed around the central axis of the base, which can ensure that the extrusion force of each slider on the shrinkage chuck is uniform, so that the extruded metal cylinder will not be wrinkled, thereby achieving an ideal shape.

Preferably, the driving structure comprises a shrinking ring, the inner side of the shrinking ring has a conical inclined surface, and the outer side of the slider is provided with a circular arc inclined surface matched with the conical inclined surface; the base is also fixedly provided with a fixed ring located outside the shrinking ring, the ring surface of the fixed ring has a strip through hole inclined upward, and the shrinking ring is fixedly provided with a handle passing through the strip through hole, and the handle can slide in the strip through hole. By turning the handle, the handle is raised along the strip through hole, thereby driving the shrinking ring fixedly connected to the handle to rise, and the conical inclined surface of the rising shrinking ring is squeezed to the circular arc inclined surface of the slider, so that the slider slides toward the center of the circle in the groove of the base, so that the shrinking chuck surrounds and squeezes the metal tube/tube toward the center of the circle to achieve the tube shrinking action. When the handle is turned to make the handle descend along the strip through hole, the conical inclined surface of the shrinking ring moves downward, that is, the thrust of squeezing the inclined surface of the slider is cancelled, and the slider rebounds and slides outside the center of the circle under the elastic force of the elastic member, so that the shrinking chuck returns to the initial position for the next tube shrinking operation. Of course, the driving structure of the present invention can also be implemented in other ways, such as a cam structure, a threaded screw structure, etc.

Preferably, the inclination angle of the conical slope is 60-80°, which can be adjusted according to the diameter of the metal tube/cylinder that needs to be shrunk.

Preferably, the elastic member is a spring. Of course, other elements that can make the slider rebound and slide may also be used, such as an elastic material column, an airbag, etc.

Preferably, the shrinking chuck is a sector block, the slider is provided with a sector step adapted to the sector block; the slider is provided with a threaded hole, the threaded hole is provided on the sector step, and the shrinking chuck is provided with an elliptical through hole corresponding to the threaded hole. Screws are inserted into the threaded hole and the elliptical through hole to fix the shrinking chuck and the slider together. At the same time, through the design of the elliptical through hole, when the shrinking chuck and the slider are fixed together, the position of the shrinking chuck can be adjusted in a small range to adjust the size of the inner diameter of the ring enclosed by the shrinking chuck.

Preferably, a stepped hole is provided in the middle of the base, a retaining ring is fixed in the stepped hole, a fixing hole is provided on the retaining ring, and the retaining ring is installed in the base by screws. The retaining ring is integrally provided with the retaining block, which is a raised convex block and is used to support the spring to prevent the spring from popping out. The countersunk hole is provided along the radial direction of the base, the retaining block corresponds to the countersunk hole, and the countersunk hole can limit the spring.

Preferably, a pressure plate is also fixed on the top of the base, and in order to avoid interference, the top of the sliding block is lower than the depth of the groove.

The beneficial effects of the utility model are:

Through the driving structure, all the sliders can be pushed to feed synchronously along the groove, so that all the sliders gather to the middle at the same time, so that the shrinking chuck is enclosed into a circular ring with a hole in the middle. The size of the middle hole is the size of the outer diameter of the metal tube/tube to be shrunk, and the gathering to the middle can ensure the consistency of the extrusion position. At the same time, the diameter of the middle hole can be changed by replacing the shrinking chuck to adapt to the extrusion of metal tubes/tubes of various diameters. The slider and the shrinking chuck are designed to be detachably connected, which is convenient for quickly switching the diameter of the metal tube/tube to be shrunk. On the other hand, through the design of the countersunk hole, the blocking block and the elastic member, when the thrust of the driving structure on the slider is cancelled, the slider is rebounded and slid outward of the center of the circle by the elastic force of the elastic member, so that the shrinking tube structure is restored and the next shrinking tube work is performed. The shrinking tube tooling of the utility model can shrink the diameter of the metal tube/tube conveniently, stably and efficiently, and can quickly switch the diameter of the metal tube/tube to be shrunk by replacing the shrinking chuck. It has a wide range of applications, low processing cost, simple structure, low processing difficulty of each component, and low overall processing cost. It can not only be used for processing metal tubes of pressure measuring tubes, but also can be applied to other products that need to be reduced in diameter.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG1 is a schematic diagram of the structure of a metal round tube before and after shrinkage;

FIG2 is a schematic diagram of the structure of the shrinking chuck opened in a specific embodiment of the utility model;

3 is a schematic structural diagram of a combined shrinkage chuck according to a specific embodiment of the present invention;

FIG4 is a schematic diagram of an explosion structure of a specific embodiment of the utility model;

FIG5 is a schematic diagram of a partial structure of a specific embodiment of the utility model;

FIG6 is a schematic cross-sectional view of a specific embodiment of the utility model;

FIG7 is a schematic structural diagram of a base according to a specific embodiment of the present utility model;

FIG8 is a schematic structural diagram of a shrink ring according to a specific embodiment of the present invention;

9 is a schematic structural diagram of a slider according to a specific embodiment of the present utility model;

10 is a schematic structural diagram of a fixing ring according to a specific embodiment of the present utility model;

11 is a schematic structural diagram of a shrinking chuck according to a specific embodiment of the present utility model;

FIG. 12 is a schematic structural diagram of a retaining ring according to a specific embodiment of the present utility model.

In the above drawings: 1. base; 11. groove; 2. slider; 21. countersunk hole; 22. arc slope; 23. fan-shaped step; 24. threaded hole; 3. shrink chuck; 31. elliptical through hole; 4. driving structure; 41. shrink ring; 411. conical slope; 412. handle; 42. fixing ring; 421. strip through hole; 5. retaining ring; 51. blocking block; 6. pressure plate; 7. metal round tube.

DETAILED DESCRIPTION

The present invention is further described below in conjunction with the accompanying drawings and embodiments. It should be noted that in the description of the present invention, the terms "upper", "lower", "left", "right", "inner", "outer", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, which are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific manner, and therefore cannot be understood as a limitation on the present invention. The terms "first", "second", "third", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

As shown in Figures 2 to 6, the utility model provides a tube shrinking tool, including a base 1. As shown in Figure 7, the base 1 is provided with a plurality of radial grooves 11 for the slider 2 to slide. The number of the grooves 11 is at least two, and the grooves 11 are evenly distributed relative to the central axis of the base 1. It can ensure that the extrusion force of each slider 2 on the shrinking chuck 3 is uniform, so that the extruded metal cylinder shape will not be wrinkled, so as to achieve an ideal shape. In this embodiment, the number of the grooves 11 is four. A detachable shrinking chuck 3 is installed on the inner side of each slider 2, and a driving structure 4 is provided on the outer side of the slider 2 to push all the sliders 2 to feed synchronously along the groove 11, and all the shrinking chucks 3 can be enclosed into a circular ring with a hole in the middle. In addition, as shown in Figure 9, a countersunk hole 21 for installing an elastic member is opened on the inner side of each slider 2, and a blocking block 51 is provided inside the base 1, and the two ends of the elastic member are respectively in contact with the blocking block 51 and the slider 2. In this embodiment, the elastic member is a spring, and of course, other elements that can make the slider 2 rebound and slide can also be used, such as an elastic material column, an elastic airbag, etc. A pressing plate 6 is also fixed on the top of the base 1 . To avoid interference, the top of the slider 2 is lower than the depth of the groove 11 .

In the above example, the driving structure 4 can push all the sliders 2 to feed synchronously along the groove 11, so that all the sliders 2 gather toward the middle at the same time, so that the shrinking chuck 3 is surrounded by a circular ring with a hole in the middle. The size of the middle hole is the size of the outer diameter of the metal tube/tube to be shrunk. At the same time, the shrinking chuck 3 is a schematic diagram of the structure when it is opened, and FIG3 is a schematic diagram of the structure when the shrinking chuck 3 is combined. At the same time, the diameter of the middle hole can be changed by replacing the shrinking chuck 3 to adapt to the extrusion of metal tubes/tubes of various diameters. The slider 2 and the shrinking chuck 3 are designed to be detachably connected, which is convenient for quickly switching the diameter of the metal tube/tube to be shrunk. On the other hand, through the design of the countersunk hole 21, the blocking block 51 and the elastic member, when the driving structure 4 is revoked to push the slider 2, the slider 2 is rebounded and slides outward from the center of the circle by the elastic force of the elastic member, so that the shrinking tube structure is restored and the next shrinking tube work is carried out. The tube shrinking tool of the utility model can shrink the diameter of the metal tube/tube conveniently, stably and efficiently, and can quickly switch the diameter of the metal tube/tube to be shrunk by replacing the shrinking chuck 3. It has wide applications, low processing cost, simple structure, low processing difficulty of each component, and low overall processing cost. It can be used not only for processing the metal tube of the pressure measuring catheter, but also for other products that need to be reduced in diameter.

As shown in Figures 8 to 10 and Figure 6, the driving structure 4 includes a shrinking ring 41, the inner side of the shrinking ring 41 has a conical inclined surface 411, and the outer side of the slider 2 is provided with an arc inclined surface 22 that matches the conical inclined surface 411. The inclination angle of the conical inclined surface 411 is 60 to 80 degrees, which can be adjusted according to the diameter of the metal tube/cylinder that needs to be shrunk. In this embodiment, the inclination angle of the conical inclined surface 411 is 80 degrees. A fixing ring 42 located outside the shrinking ring 41 is also fixed on the base 1. The annular surface of the fixing ring 42 has a strip-shaped through hole 421 that is inclined upward. A handle 412 passing through the strip-shaped through hole 421 is fixed on the shrinking ring 41, and the handle 412 can slide in the strip-shaped through hole 421. By rotating the handle 412, the handle 412 is raised along the strip-shaped through hole 421, thereby driving the shrinking ring 41 fixedly connected to the handle 412 to rise, and the tapered inclined surface 411 of the rising shrinking ring 41 is squeezed onto the arc inclined surface 22 of the slider 2, so that the slider 2 slides toward the center of the circle in the groove 11 of the base 1, so that the shrinking chuck 3 surrounds and squeezes the metal tube/tube toward the center of the circle to achieve the tube shrinking action. When the handle 412 is rotated to make the handle 412 descend along the strip-shaped through hole 421, the tapered inclined surface 411 of the shrinking ring 41 moves downward, that is, the thrust of squeezing the inclined surface of the slider 2 is cancelled, and the slider 2 rebounds and slides outward from the center of the circle under the elastic force of the elastic member, so that the shrinking chuck 3 returns to the initial position for the next tube shrinking operation. Of course, the drive structure 4 of the utility model can also be implemented in other ways, such as a cam structure, a threaded screw structure, etc.

As shown in FIG. 11 and FIG. 6 and FIG. 9, the shrinking chuck 3 is a sector block, and the slider 2 is provided with a sector step 23 adapted to the sector block; the slider 2 is provided with a threaded hole 24, and the threaded hole 24 is provided on the sector step 23, and the shrinking chuck 3 is provided with an elliptical through hole 31 corresponding to the threaded hole 24. Screws are inserted into the threaded hole 24 and the elliptical through hole 31 to fix the shrinking chuck 3 and the slider 2 together. At the same time, through the design of the elliptical through hole 31, when the shrinking chuck 3 and the slider 2 are fixed together, the position of the shrinking chuck 3 can be adjusted in a small range to adjust the size of the inner diameter of the ring enclosed by the shrinking chuck 3.

As shown in FIG. 12 and FIG. 5 and FIG. 7, a stepped hole is provided in the middle of the base 1, a retaining ring 5 is fixed in the stepped hole, a fixing hole is provided on the retaining ring 5, and the retaining ring 5 is installed in the base 1 by screws. A blocking block 51 is integrally provided on the retaining ring 5, and the blocking block 51 is a raised convex block, and the blocking block 51 is used to support the spring to prevent the spring from popping out. The countersunk hole 21 is provided along the radial direction of the base 1, and the blocking block 51 corresponds to the countersunk hole 21, and the countersunk hole 21 can limit the spring.

The preferred specific embodiments of the utility model are described in detail above. It should be understood that ordinary technicians in this field can make many modifications and changes based on the concept of the utility model without creative work. Therefore, all technical solutions that can be obtained by technicians in this technical field based on the concept of the utility model through logical analysis, reasoning or limited experiments on the basis of the existing technology should be within the scope of protection determined by the claims.

Claims (9)

1. Draw frock, its characterized in that: the device comprises a base (1), wherein a plurality of grooves (11) for sliding a sliding block (2) along the radial direction are formed in the base (1), a detachable shrinkage chuck (3) is arranged on the inner side of each sliding block (2), a driving structure (4) for pushing all sliding blocks (2) to synchronously feed along the grooves (11) is arranged on the outer side of each sliding block (2), and all shrinkage chucks (3) can be encircled to form a circular ring with a hole in the middle; counter bores (21) for installing elastic pieces are formed in the inner side of each sliding block (2), blocking blocks (51) are arranged in the base (1), and two ends of each elastic piece are respectively in contact with the blocking blocks (51) and the sliding blocks (2).

2. The shrink tubing tool of claim 1, wherein: the number of the grooves (11) is at least two, and the grooves (11) are uniformly distributed relative to the circumference of the central shaft of the base (1).

3. The shrink tubing tool of claim 1, wherein: the driving structure (4) comprises a contraction ring (41), the inner side surface of the contraction ring (41) is provided with a conical inclined surface (411), and the outer side surface of the sliding block (2) is provided with an arc inclined surface (22) matched with the conical inclined surface (411); the base (1) is fixedly provided with a fixing ring (42) positioned outside the shrinkage ring (41), the ring surface of the fixing ring (42) is provided with an inclined upward bar-shaped through hole (421), the shrinkage ring (41) is fixedly provided with a handle (412) penetrating through the bar-shaped through hole (421), and the handle (412) can slide in the bar-shaped through hole (421).

4. A tube shrinkage tool as defined in claim 3, wherein: the inclined angle of the conical inclined surface (411) is 60-80 degrees.

5. The shrink tubing tool of claim 1, wherein: the elastic piece is a spring.

6. The shrink tubing tool of claim 1, wherein: the shrinkage chuck (3) is a sector block, and a sector step (23) which is adaptive to the sector block is arranged on the sliding block (2); the sliding block (2) is provided with a threaded hole (24), and the shrinkage chuck (3) is provided with an elliptical through hole (31) corresponding to the threaded hole (24).

7. The shrink tubing tool of claim 1, wherein: a stepped hole is formed in the middle of the base (1), a baffle ring (5) is fixed in the stepped hole, and the baffle block (51) is integrally arranged on the baffle ring (5); the counter bore (21) is arranged along the radial direction of the base (1), and the blocking block (51) corresponds to the counter bore (21).

8. The shrink tubing tool of claim 1, wherein: the top of the sliding block (2) is lower than the depth of the groove (11).

9. The shrink tubing tool of claim 8, wherein: the top of the base (1) is also fixed with a pressing plate (6).