CN217916744U - Needle tubing bending forming tool - Google Patents

Abstract

The application provides a needle tubing bending tool for to wait to process the needle tubing and obtain required needle tubing according to predetermineeing crooked radian processing, including frock platform, handle and movable wheel, handle one end rotatable coupling in the frock platform, the frock platform is equipped with places the clamping face of waiting to process the needle tubing, the clamping face goes up the concave first recess that is equipped with and needs needle tube shape assorted, form a curved surface that has predetermined crooked radian on the clamping face, the movable wheel corresponds the concave second recess that is equipped with along its circumference surface, the movable wheel can install with rolling in the handle just follows the handle winds the curved surface rotates, first recess with the second recess splices into the indent of adaptation in the needle tubing external diameter jointly. The needle tube bending forming jig is simple in structure, easy to manufacture, low in cost, extremely simple in processing technology method, capable of improving processing efficiency, capable of effectively guaranteeing roundness of a bent part of a needle tube, and good in quality of processed products.

Description

Needle tubing bending forming tool

Technical Field

The application relates to the technical field of machining, in particular to needle tubing bending forming tool.

Background

The pipe diameter of the needle tube is small, the uniformity of the pipe diameter of the bent part of the needle tube is difficult to control in the process of bending and forming the needle tube, and the bending and forming process needs precise tooling equipment, so that the manufacturing cost of the tooling equipment is high, and the operation is complicated. The existing tooling equipment is easy to apply uneven force to the bent part of the needle tube when the needle tube is bent and molded, so that the bent part of the needle tube is distorted, the wall thickness of the bent part is uneven, and the roundness of the bent part of the needle tube cannot be ensured. Therefore, how to ensure the roundness of the bent portion of the needle tube is a technical difficulty to be solved by those skilled in the art.

SUMMERY OF THE UTILITY MODEL

In view of the above, the present application provides a needle tube bending jig capable of effectively solving the above problems.

The application provides a needle tubing bending tool for to wait to process the needle tubing and obtain required needle tubing according to predetermineeing crooked radian processing, including frock platform, handle and movable wheel, handle one end rotatable coupling in the frock platform, the frock platform is equipped with places the clamping face of waiting to process the needle tubing, the clamping face goes up the concave first recess that is equipped with and needs needle tube shape assorted, form a curved surface that has predetermined crooked radian on the clamping face, the movable wheel corresponds the concave second recess that is equipped with along its circumference surface, the movable wheel can install with rolling in the handle just follows the handle winds the curved surface rotates, first recess with the second recess splices into the indent of adaptation in the needle tubing external diameter jointly.

In one embodiment, the cross section of the first groove and the cross section of the second groove are both semicircular and matched with the outer diameter of the needle tube.

In an embodiment, the first groove includes a first groove portion located at the curved surface region, a second groove portion located at one end of the first groove portion, and a third groove portion located at the other end of the first groove portion, and the second groove portion and the third groove portion are respectively communicated with the first groove portion.

In one embodiment, a cushion is disposed in each of the first and second grooves.

In an embodiment, a flat port is arranged at the end of the first groove, and the flat port is communicated with the first groove.

In one embodiment, a yielding groove is formed in one corner of the tool table, a workbench is positioned on one side of the yielding groove, one end of the handle is rotatably connected to the workbench, and the clamping surface is arranged on the workbench.

In one embodiment, the handle comprises a first pivot arm and a second pivot arm which are arranged on one end surface of the handle at intervals, a pivot groove is formed between the first pivot arm and the second pivot arm, the first pivot arm and the second pivot arm are rotatably connected to two sides of the workbench through a first rotating shaft, and the movable wheel is arranged in the pivot groove.

In an embodiment, the movable wheel is rotatably disposed between the first pivot arm and the second pivot arm through a second rotating shaft, the movable wheel is provided with a wheel hole, and the second rotating shaft is sleeved with a bearing, and the bearing is mounted in the wheel hole.

In an embodiment, the movable wheel is rotatably disposed between the first pivot arm and the second pivot arm through a second rotating shaft, the movable wheel is provided with a wheel hole, and the second rotating shaft is sleeved with a damping sleeve, which is disposed in the wheel hole.

In one embodiment, one end of the first groove extends to the other end along the length direction of the workbench, and the curved surface is located on one side close to the end surface of the workbench.

To sum up, this application provides a needle tubing bending jig, sets up a curved surface and through the first recess of this curved surface on the clamping face of frock platform, corresponds on the movable wheel and sets up the second recess, and the movable wheel can be installed in handle and rotate around curved surface along with the handle with rolling, and first recess splices into the indent of adaptation in the needle tubing external diameter jointly with the second recess. When the needle tube bending machine is used, the handle is rotated to enable the movable wheel to roll to pass through the bending surface, the needle tube is extruded to be bent, the groove walls of the first groove and the second groove are uniformly abutted against the outer wall of the needle tube in the circumferential direction, the circumferential stress of the needle tube is uniform, the deformation of the side wall of the needle tube tends to be uniform during bending, distortion cannot occur, the thickness of the side wall of the bent part of the needle tube in the radial direction is uniform, and the roundness of the bent part of the needle tube is ensured. The needle tube bending forming jig is simple in structure, easy to manufacture, low in cost, extremely simple in processing technology method, capable of improving processing efficiency, capable of effectively guaranteeing roundness of a bent part of a needle tube, and good in quality of processed products.

Drawings

Fig. 1 is a perspective view of an exemplary needle tube bending jig according to the present application.

Fig. 2 is an exploded view of the jig for bending and forming the needle tube in fig. 1.

Detailed Description

Before the embodiments are described in detail, it is to be understood that the application is not limited in its application to the details of construction and the arrangements of components set forth in the following description or illustrated in the drawings. The present application is capable of embodiments that can be practiced in other ways. Also, it is to be understood that the phraseology and terminology used herein is for the purpose of description and should not be regarded as limiting. The use of "including," "comprising," "having," and the like, herein is meant to encompass the items listed thereafter and equivalents thereof as well as additional items. In particular, when "a certain element" is described, the present application does not limit the number of the element to one, and may include a plurality of elements.

Referring to fig. 1 to 2, the present application provides a needle tube bending jig 10 for processing a needle tube to be processed according to a predetermined bending radian to obtain a desired needle tube. The needle tube bending jig 10 can be used for bending the needle tube to a preset curvature. It should be understood that, in other embodiments, the needle tube bending jig 10 of the present application may also be applied to other solid cylindrical objects with smaller tube diameter or smaller diameter, so as to perform bending processing on the solid cylindrical objects, and ensure the roundness of the bent portion.

Specifically, the needle tubing bending jig 10 includes a fixture table 12, a handle 14 and a movable wheel 16, one end of the handle 14 is rotatably connected to the fixture table 12, an installation position 18 is formed between the handle 14 and the fixture table 12, the movable wheel 16 is rotatably installed at the installation position 18, and the movable wheel 16 abuts against the fixture table 12, so that when the handle 14 is rotated, the movable wheel 16 can be driven by the handle 14 to rotate around the fixture table 12 to a preset direction, and the movable wheel 16 can roll and rotate in the rotating process.

The tooling platform 12 is provided with a clamping surface 13 for placing the needle tube to be processed, and the outline of the clamping surface 13 is matched with the outline of the required needle tube. The clamping surface 13 is formed with a curved surface 20 on the moving path of the moving wheel 16, the needle tube bending process is realized on the curved surface 20, and the radian of the curved surface 20 is the same as the preset curvature required by the needle tube. The clamping surface 13 of the tooling table 12 is concavely provided with a first groove 22 extending along the length direction of the required needle tube, the shape of the length direction of the first groove 22 is matched with that of the length direction of the required needle tube, and the cross section of the first groove 22 is arc-shaped and matched with the outer diameter of the needle tube, so that the extending path of the first groove 22 passes through the bending surface 20.

The movable wheel 16 is concavely provided with a second groove 24 along the circumferential surface thereof corresponding to the first groove 22, and the section of the second groove 24 is arc-shaped and matched with the outer diameter of the needle tube. Optionally, the second groove 24 is formed in a central area in the thickness direction of the movable wheel 16, and a projection of the second groove 24 on the tooling table 12 is located on the first groove 22, that is, the second groove 24 can always correspond to the first groove 22 in the process that the movable wheel 16 rotates and rotates with the handle 14 to perform a rolling motion. And at the butt position of the movable wheel 16 and the tooling table 12, the first groove 22 and the second groove 24 are spliced together to form a circular pressing groove which is matched with the outer diameter of the needle tube. With the arrangement, when the movable wheel 16 rolls to pass through the bending surface 20 to bend and mold the needle tube, the groove wall of the pressing groove can uniformly press on all positions of the circumferential direction of the needle tube, and the extrusion force applied to all positions of the circumferential side wall of the needle tube is uniform. Particularly, when the movable wheel 16 rolls downwards through the curved surface 20, the stress on the upper and lower side walls of the curved part of the needle tube is large, so that the left and right side walls of the needle tube are easy to bulge and deform outwards, and the curved part of the needle tube is twisted.

It should be understood that the cross-sectional shape of the needle cannula and the joint of the first recess 22 and the second recess 24 is circular for illustrative purposes only, and the present application is not limited to this particular shape, and in other embodiments, the cross-section of the needle cannula may be other shapes, such as oval, so that the cross-sectional shape of the joint of the first recess 24 and the second recess 24 corresponds to the cross-sectional shape of the needle cannula.

In the illustrated embodiment, a corner of the tooling table 12 is provided with a relief groove 26 with three sides open, one side of the relief groove 26 forms a working table 28, one end of the handle is rotatably connected to the top side of the working table 28, the first groove 22 is arranged on the top side surface of the working table 28, that is, the clamping surface 13 is arranged on the top surface of the working table 28, and the bending forming process of the needle tube is implemented on the working table 28.

More specifically, the handle 14 includes a first pivot arm 30 and a second pivot arm 32 spaced apart from each other on one end surface of the handle 14, a pivot groove 34 is formed between the first pivot arm 30 and the second pivot arm 32, the first pivot arm 30 and the second pivot arm 32 are rotatably connected to both sides of the workbench 28 by a first rotating shaft 36, for example, a first pivot hole 38 is respectively formed at the end positions of the first pivot arm 30 and the second pivot arm 32, a first shaft hole 40 is formed on the workbench 28, the first rotating shaft 36 is inserted into the first shaft hole 40, and both ends of the first rotating shaft 36 are respectively inserted into the first pivot holes 38 of the first pivot arm 30 and the second pivot arm 32. The portion of the pivot slot 34 between the clamping surface 13 of the table 28 and the end wall of the pivot slot 34 forms the mounting location 18. The first axial hole 40 is located at the center of the curved surface 20, so that the handle 14 rotates around the center of the curved surface 20 (i.e. the center of the predetermined curvature required by the needle cannula).

The movable wheel 16 is rotatably disposed between the first pivot arm 30 and the second pivot arm 32 through a second rotating shaft 42, specifically, the movable wheel 16 is provided with a wheel hole 44, the first pivot arm 30 and the second pivot arm 32 are respectively and correspondingly provided with a second pivot hole 46, the second rotating shaft 42 penetrates through the wheel hole 44, and two ends of the second rotating shaft 42 are respectively inserted into the second pivot holes 46 of the first pivot arm 30 and the second pivot arm 32.

Preferably, a bearing 48 is sleeved on the second rotating shaft 42, and the bearing 48 is installed in the wheel hole 44. The addition of the bearing 48 enables the movable wheel 16 to have the degree of freedom around the second rotating shaft 42 and provide a certain radial elastic deformation space, reduces the extrusion damage of the movable wheel 16 to the workbench 28, prolongs the service life of the tooling table 12, increases the rolling stability of the movable wheel 16, and improves the yield.

In other embodiments, a damping sleeve may be sleeved on the second rotating shaft 42 to increase the frictional resistance between the movable wheel 16 and the second rotating shaft 42, so as to enhance the rolling stability of the movable wheel 16 and prevent the movable wheel 16 from excessively squeezing the worktable 28.

In some embodiments, which are not shown, the mounting position 18 and the movable wheel 16 may be disposed at other positions of the handle 14, for example, the movable wheel 16 is disposed at a side position of the handle 14 through a connecting member, and the movable wheel is driven to roll on the clamping surface of the tooling table 12 when the handle 14 rotates, which is not limited in the present application.

In the illustrated embodiment, the first groove 22 extends from one end to the other along the length of the platform 28, the curved surface 20 is located on the side near the end surface of the platform 28, and the handle 14 rotates from top to bottom along the corner of the platform 28 when the handle 14 is rotated to perform the bending operation on the syringe. The first groove 22 includes a first groove 50 located in the region of the curved surface 20, a second groove 52 located at one end of the first groove 50, and a third groove 54 located at the other end of the first groove 50, wherein the second groove 52 and the third groove 54 are respectively communicated with the first groove 50, and the third groove 54 is located at a side close to the end surface of the worktable 28. The second groove portion 52 and the third groove portion 54 are both straight grooves, and the second groove portion 52 is an arc-shaped groove extending along the curved surface 20.

In this embodiment, the first groove 22 and the second groove 24 are both semicircular arc-shaped grooves, and the two grooves can be spliced into a complete circle at the position where the movable wheel 16 abuts against the workbench 28.

In other embodiments, the first groove 22 and the second groove 24 may be non-semicircular arc-shaped grooves, but it is sufficient that the grooves can be spliced into a complete circle at the portion where the movable wheel 16 abuts against the table 28.

In a preferred embodiment, soft pads may be respectively disposed in the first recess 22 and the second recess 24 to prevent the needle tube from breaking during bending, thereby improving product quality and yield.

Preferably, the end of the first groove 22 near the end face of the working platform 28 is provided with a flat port 56, the flat port 56 is communicated with the first groove 22, the handle 14 is further rotated to enable the movable wheel 16 to roll through the flat port 56, and the end of the needle tube is squeezed to form a flat needle head.

To sum up, this application provides a needle tubing bending jig, sets up a curved surface and through the first recess of this curved surface on the clamping face of frock platform, corresponds on the movable wheel and sets up the second recess, and the movable wheel can be installed in handle and rotate around curved surface along with the handle with rolling, and first recess splices into the indent of adaptation in the needle tubing external diameter jointly with the second recess. When the needle tube bending machine is used, the handle is rotated to enable the movable wheel to roll through the bending surface, the needle tube is extruded to be bent, the groove walls of the first groove and the second groove are uniformly abutted against the outer wall of the needle tube in the circumferential direction, the circumferential stress of the needle tube is uniform, the deformation of the side wall of the needle tube tends to be consistent in the bending process, the needle tube cannot be distorted, the thickness of the side wall of the bent part of the needle tube in the radial direction is uniform, and the roundness of the bent part of the needle tube is ensured. The needle tube bending forming jig is simple in structure, easy to manufacture, low in cost, extremely simple in processing technology method, capable of improving processing efficiency, capable of effectively guaranteeing roundness of a bent part of a needle tube, and good in quality of processed products.

The concepts described herein may be embodied in other forms without departing from the spirit or characteristics thereof. The particular embodiments disclosed should be considered illustrative rather than restrictive. The scope of the application is, therefore, indicated by the appended claims rather than by the foregoing description. Any changes which come within the meaning and range of equivalency of the claims are to be embraced within their scope.

Claims (10)

1. The utility model provides a needle tubing bending tool for to wait to process the needle tubing and obtain required needle tubing according to predetermineeing crooked radian processing, a serial communication port, including frock platform, handle and loose wheel, handle one end rotatable coupling in the frock platform, the frock platform is equipped with places the clamping face of waiting to process the needle tubing, the clamping face goes up the concave first recess that is equipped with and needs needle tubing shape assorted, form a curved surface that has predetermined crooked radian on the clamping face, the loose wheel corresponds the concave second recess that is equipped with along its circumference surface, the loose wheel can install rollingly in the handle just follows the handle winds the curved surface rotates, first recess with the second recess splices into the indent of adaptation in the needle tubing external diameter jointly.

2. The needle tube bending jig according to claim 1, wherein the first groove and the second groove each have a semicircular cross section matching an outer diameter of the needle tube.

3. The needle tubing bending jig according to claim 1, wherein the first groove includes a first groove portion located in the curved surface region, a second groove portion located at one end of the first groove portion, and a third groove portion located at the other end of the first groove portion, the second groove portion and the third groove portion communicating with the first groove portion, respectively.

4. The needle tube bending jig according to claim 1, wherein a soft pad is provided in each of the first recess and the second recess.

5. The needle tube bending jig according to claim 1, wherein a flat port is provided at a distal end of the first groove, and the flat port communicates with the first groove.

6. The needle tube bending jig according to any one of claims 1 to 5, wherein a recess is formed at a corner of the tool table and forms a working table located on one side of the recess, one end of the handle is rotatably connected to the working table, and the clamping surface is arranged on the working table.

7. The needle tube bending jig according to claim 6, wherein the handle comprises a first pivot arm and a second pivot arm which are arranged at an end surface of the handle at intervals, a pivot groove is formed between the first pivot arm and the second pivot arm, the first pivot arm and the second pivot arm are rotatably connected to two sides of the workbench through a first rotating shaft, and the movable wheel is arranged in the pivot groove.

8. The needle tube bending jig according to claim 7, wherein the movable wheel is rotatably disposed between the first pivoting arm and the second pivoting arm through a second rotating shaft, the movable wheel is provided with a wheel hole, the second rotating shaft is sleeved with a bearing, and the bearing is mounted in the wheel hole.

9. The needle tube bending jig according to claim 7, wherein the movable wheel is rotatably disposed between the first pivoting arm and the second pivoting arm through a second rotating shaft, the movable wheel is provided with a wheel hole, the second rotating shaft is sleeved with a damping sleeve, and the damping sleeve is disposed in the wheel hole.

10. The needle tube bending jig according to claim 6, wherein the first groove extends from one end to the other end along the length direction of the table, and the curved surface is located on a side close to the end surface of the table.

Images