Manual wave rolling tool for guide pipe

Abstract

In order to solve the technical problems that deformation is difficult to control, the space is narrow and the operation is not easy when a conduit with a larger diameter is subjected to wave rolling on equipment, the utility model provides a manual wave rolling tool for a conduit. The rolling device comprises a positioning and clamping assembly and a rolling assembly, clamping and rolling are carried out step by step, the distance from rolling waves to the end face is controlled while the guide pipe is clamped, positioning is more accurate, and clamping is more reliable; the shape of the guide pipe is fixed and centered, the profile size is controlled at the same time through internal rolling and shape limiting, and meanwhile the guide pipe is prevented from deforming in the rolling process; the rolling assembly adopts progressive axial feeding, so that the two ends of the inner roller feed and roll the inner wall of the guide pipe in the radial direction at the same time, the rolling force is balanced, and the rolling efficiency is improved.

Description

Technical Field

[0001] The utility model relates to a manual rolling wave tooling for a catheter. Background Art

[0002] The rolling wave part at the connection of a catheter of a certain device is pulled off and fails, and it needs to be repaired on site. The diameter of the catheter is 52 mm, the wall thickness is 1 mm, and the material is rust-proof aluminum. At present, for the rolling wave of such a large-diameter catheter, it is usually carried out on equipment. Due to the poor rigidity of the catheter, it is very difficult to control the deformation during rolling wave. The operation area is narrow without disassembling the catheter. Therefore, it is necessary to design a portable manual rolling wave tooling with a compact structure to meet the repair needs of the catheter connection part. Content of the Utility Model

[0003] In order to solve the technical problems that it is very difficult to control the deformation during the rolling wave of a large-diameter catheter on equipment and the space is narrow and not easy to operate, the utility model provides a manual rolling wave tooling for a catheter.

[0004] The technical solution of the utility model is as follows:

[0005] A manual rolling wave tooling for a catheter is characterized in that it includes a positioning and clamping assembly and a rolling and pressing assembly;

[0006] The positioning and clamping assembly includes a half-ring, a locking collar and a fixing nut which are sleeved in sequence from inside to outside; the upper inner wall of the half-ring is processed with a profile for the rolling wave forming of the catheter to control the size of the final rolling wave forming;

[0007] The rolling and pressing assembly includes a rotating body, a locking nut, a bearing, a limiting sleeve, a screw rod, a rotating pressing plate, a pressing block, a slider with an inner roller and a handle;

[0008] The rotating body is located inside the half-ring; the rotating body is a hollow rotary body structure with a stepped outer wall, larger at the top and smaller at the bottom, the lower part is a closed end, and the upper part is an open end; a slot for accommodating the inner roller is arranged on the outer wall of the lower part of the rotating body;

[0009] The rotating body is arranged in the locking nut and can rotate flexibly, and wraps the lower parts of the slider, the pressing block and the screw rod inside; a bearing is installed between the rotating body and the locking nut, and the limiting sleeve is installed outside the locking nut to limit the position of the rotating body from above; the locking nut is located outside the fixing nut, and rotating the locking nut can connect it with the fixing nut to realize the connection between the rolling and pressing assembly and the positioning and clamping assembly;

[0010] The rotating pressing plate and the pressing block are arranged on the screw rod from top to bottom. The lower part of the rotating pressing plate and the pressing block are both located inside the rotating body. The rotating pressing plate is also fixedly connected with the rotating body and can drive the rotating body to rotate; the opposite two side walls of the pressing block are inclined planes;

[0011] There are two such sliders, which are respectively arranged on both sides of two opposite inclined surfaces of the pressing block and are in inclined surface fit with it; springs are installed on both the upper and lower parts of the side wall of the slider facing the rotating body. The middle part of the side wall of the slider facing the rotating body has a radially extending convex part. A groove for accommodating the inner roller is provided on the side wall of this convex part. A pin hole is provided at the end of this convex part. The inner roller is installed in the groove on the convex part and is connected to the slider through a cylindrical pin installed in the pin hole; the inner roller can rotate flexibly; both end faces of the cylindrical pin shall not exceed the end face of the convex part.

[0012] The slider, the spring and the inner roller as a whole are installed in the rotating body, and the end face of the spring is in contact with the inner wall of the rotating body. The convex part with the inner roller and the cylindrical pin is located in the slot hole at the lower part of the side wall of the rotating body; the spring is used to realize the radial pressing between the slider and the pressing block.

[0013] The handle is connected to the rotating pressing plate and is used to drive the rotating pressing plate to rotate.

[0014] After being assembled, the axial clearance between the rotating body and the locking nut is 0.05 - 0.1 mm, and the axial end play of the rotating body is less than or equal to 0.1 mm.

[0015] Further, the half ring and the locking collar are in inclined surface fit.

[0016] Further, a pin hole is provided on the end face of the rotating pressing plate. After a spring and a steel column are sequentially installed in this pin hole, the handle is then installed and the handle is connected to the rotating pressing plate through a cylindrical pin.

[0017] Further, the limit sleeve is connected to the locking nut through a countersunk head screw.

[0018] Further, the bearing is a needle roller bearing.

[0019] The beneficial effects of the present utility model:

[0020] 1. The present utility model can solve the problem of manually rolling waves for a catheter with a diameter of 52 mm and a wall thickness of 1 mm, and the tooling structure is compact, easy to carry and has high rolling efficiency.

[0021] 2. In the present utility model, the rolling assembly adopts progressive axial feeding, so that both ends of the inner roller simultaneously feed radially to roll the inner wall of the catheter, and the rolling force is balanced and the rolling efficiency is improved.

[0022] 3. The present utility model uses the outer shape of the catheter for fixed centering, and simultaneously controls the profile dimensions by internal rolling and outer shape limiting, and at the same time prevents the catheter from deforming during the rolling process.

[0023] 4. When the utility model is in use, the clamping and rolling parts are carried out step by step. While clamping the catheter, the distance from the rolling wave to the end face is also controlled, making the positioning more accurate and the clamping more reliable.

[0024] 5. The utility model can be repeatedly positioned and rolled. The size of the rolling wave can be measured, and the rolling wave with an unqualified size can be formed in situ repeatedly.

[0025] 6. While ensuring reliability, the structure of the utility model is made as simple and compact as possible to meet the requirements of the working environment.

[0026] 7. The utility model is not only applicable to catheters with a diameter of 52 mm and a wall thickness of 1 mm, but also applicable to the processing requirements of various specifications of catheters with the same type of connection. At the same time, it can also be used for small-batch catheter processing, making the rolling wave processing no longer limited by equipment and working sites, and the rolling wave effect can be comparable to that of similar equipment. Description of the Drawings

[0027] Figure 1 is a perspective view of the manual rolling wave tooling for catheters of the utility model.

[0028] Figure 2 is a schematic cross-sectional view of the manual rolling wave tooling for catheters of the utility model.

[0029] Figure 3 is a top view of the manual rolling wave tooling for catheters of the utility model.

[0030] Reference Signs:

[0031] 101 - half ring, 102 - locking collar, 103 - fixing nut;

[0032] 201 - screw rod, 202 - rotating pressing plate, 203 - handle, 204 - bearing, 205 - rotating body, 206 - slider, 207 - inner roller, 208 - locking nut, 209 - limiting sleeve, 210 - pressing block, 211 - first cylindrical pin, 212 - steel ball, 213 - first spring, 214 - second spring, 215 - first countersunk head screw, 216 - second cylindrical pin, 217 - third cylindrical pin, 218 - second countersunk head screw;

[0033] 301 - catheter. Detailed Embodiment

[0034] The following further elaborates the utility model in conjunction with the drawings.

[0035] As Figures 1-3 shown, a manual rolling wave tooling for catheters includes a positioning and clamping assembly and a rolling assembly.

[0036] The positioning and clamping assembly includes a half-ring 101, a locking collar 102, and a fixing nut 103 that are sleeved from the inside out in sequence. The half-ring 101 is installed in the fixing nut 103 through the locking collar 102; the locking collar 102 is threadedly connected to the fixing nut 103; the half-ring 101 and the locking collar 102 are in inclined surface fit, and the inclined surfaces of the two act on each other to press and fix the half-ring 101. At the position where the upper inner wall of the half-ring 101 matches the inner roller 207 in the rolling assembly, a profile formed by rolling the conduit is machined to control the final forming size of the rolling wave. The installation position of the inner roller 207 in the rolling assembly will be described in the following content.

[0037] The rolling assembly includes a screw 201, a rotating pressing plate 202, a handle 203, a bearing 204, a rotating body 205, a slider 206, an inner roller 207, a limit sleeve 209, and a locking nut 208.

[0038] The rotating body 205 is located inside the half-ring 101 in the positioning and clamping assembly; the rotating body 205 is a hollow rotary body structure with a stepped outer wall, larger at the top and smaller at the bottom, with a closed end at the lower part and an open end at the upper part; a slot for accommodating the inner roller 207 is provided on the side wall of the rotating body 205 near its closed end; the rotating body 205 is arranged inside the locking nut 208 and wraps the lower parts of the slider 206, the pressing block 210, and the screw 201 inside; a bearing 204 is installed between the rotating body 205 and the locking nut 208, and the outer diameter of the rotating body 205 is matched with the inner hole of the bearing 204; the limit sleeve 209 is installed outside the locking nut through a countersunk head screw 215 to limit the position of the rotating body 205 from above. After assembly, the rotating body 205 can rotate flexibly without interference and jamming with the locking nut 208.

[0039] The locking nut 208 is also installed outside the fixing nut 103. By rotating the locking nut 208, its snap connection with the fixing nut 103 can be realized, achieving the connection between the rolling assembly and the positioning and clamping assembly.

[0040] The rotating pressing plate 202 and the pressing block 210 are arranged on the screw 201 from top to bottom. At the same time, the lower part of the rotating pressing plate 202 and the pressing block 201 are both located inside the rotating body 205. The rotating pressing plate 202 is installed on the rotating body 205 through a third cylindrical pin 217 and a second countersunk head screw 218; the rotating pressing plate 202 can rotate flexibly relative to the screw 201, and the pressing block 210 can move up and down along with the screw 201. The opposite side walls of the pressing block 210 are inclined surfaces, and the two inclined surfaces of the pressing block 210 are respectively in inclined surface fit with the two sliders 206 located inside the rotating body 205.

[0041] The end face of the rotating pressure plate 202 is provided with a pin hole. After sequentially installing the first spring 213 and the steel column 212 into the pin hole, the handle 203 is installed, and the handle 203 is connected to the rotating pressure plate 202 by the first cylindrical pin 211; the lower end of the first spring 213 abuts against the upper end face of the rotating body 205.

[0042] There are two sliders 206, which are respectively arranged on both sides of two opposite inclined surfaces of the pressing block 210. Second springs 214 are installed on both the upper and lower sides of the side wall of the slider 206 facing the rotating body 205. The middle part of the side wall of the slider 206 facing the rotating body 205 has a protruding part extending radially outward. A groove for accommodating the inner roller 207 is formed on the side wall of the protruding part. A pin hole is formed at the end of the protruding part. The inner roller 207 is installed in the groove on the protruding part and is connected to the slider 206 through the second cylindrical pin 216 installed in the pin hole on the protruding part. Moreover, the inner roller 207 can rotate flexibly, and the end faces of both ends of the second cylindrical pin 216 shall not exceed the end face of the protruding part of the side wall of the slider 206.

[0043] The slider 206, the second spring 214 and the inner roller 207 as a whole are installed in the rotating body 205, and the end face of the second spring 214 is in contact with the inner wall of the rotating body 205. The protruding part with the inner roller 207 and the second cylindrical pin 216 is located in the slot hole at the lower part of the side wall of the rotating body 205.

[0044] The side wall of the slider 206 for cooperating with the pressing block 210 is an inclined surface, and the second spring 214 can realize the radial pressing between the slider 206 and the pressing block 210.

[0045] After the assembly of the present utility model, a gap of 0.05 - 0.1 mm should be ensured at M, and the axial end play of the rotating body 205 should not be greater than 0.1 mm.

[0046] The principle and working process of the present utility model:

[0047] 1. Positioning and clamping process:

[0048] First, the conduit 301 is sleeved into the half-ring 101, so that the upper end face of the half-ring 101 abuts against the end N of the conduit 301, and at the same time it is fastened to the outer wall of the conduit 301; then the locking collar 102 is sleeved outside the half-ring 101, and finally the half-ring 101 is fixedly secured with the fixing nut 103.

[0049] 2. Rolling process:

[0050] First, put the rolling component on the positioning and clamping component, and rotate the locking nut 208 to make the snap connection between the locking nut 208 and the fixed nut 103 reliable; then rotate the screw rod 201 to move the pressing block 210 downward. Since the pressing block 210 is in inclined plane fit with the slider 204, when the pressing block 210 moves downward, the sliders 206 on both sides of it can move synchronously along the radial direction, and further make the inner rollers 207 at the side walls of the sliders 206 move along the radial direction and slide in the inner groove of the rotating body 205 to squeeze the inner wall of the conduit 301, and roll the inner wall of the conduit 301.

[0051] Then, rotate the handle 203 to drive the rotating pressing plate 202 to drive the rotating body 205, the slider 204, the inner roller 207, and the pressing block 201 to rotate by a set angle around the axis of the conduit 301 as a whole, and repeat the feeding process of the screw rod 201 and the rotation process of the handle 203 until the rolling wave forming is completed.

Claims

1. A manual catheter rolling wave tooling, characterized in that: It includes a positioning and clamping assembly and a rolling assembly; The positioning and clamping assembly includes a half-ring, a locking collar, and a fixing nut that are sleeved from the inside out in sequence; on the inner wall of the upper part of the half-ring, a profile formed by rolling waves on a conduit is machined, which is used to control the size of the final rolling wave formation; The rolling assembly includes a rotating body, a locking nut, a bearing, a limit sleeve, a screw rod, a rotating pressing plate, a pressing block, a slider with inner rollers, and a handle; The rotating body is located inside the half-ring; the rotating body is a hollow rotary body structure with a stepped outer wall that is larger at the top and smaller at the bottom, the lower part is a closed end, and the upper part is an open end; on the outer wall of the lower part of the rotating body, a slot is provided for accommodating the inner rollers; The rotating body is arranged inside the locking nut and can rotate flexibly, and wraps the lower parts of the slider, the pressing block, and the screw rod inside it; a bearing is installed between the rotating body and the locking nut, and the limit sleeve is installed outside the locking nut to limit the position of the rotating body from above; the locking nut is located outside the fixing nut, and rotating the locking nut can connect it to the fixing nut to realize the connection between the rolling assembly and the positioning and clamping assembly; The rotating pressing plate and the pressing block are arranged on the screw rod from top to bottom; the lower part of the rotating pressing plate and the pressing block are both located inside the rotating body, and the rotating pressing plate is also fixedly connected to the rotating body and can drive the rotating body to rotate; the opposite side walls of the pressing block are inclined planes; There are two sliders, which are respectively arranged on both sides of the two opposite inclined planes of the pressing block and are both in inclined plane fit with it; on the side wall of the slider facing the rotating body, springs are installed on both the upper and lower parts, and in the middle of the side wall of the slider facing the rotating body, there is a protruding part extending radially outwards. On the side wall of this protruding part, a groove is provided for accommodating the inner rollers, and a pin hole is provided at the end of this protruding part. The inner rollers are installed in the groove on the protruding part and are connected to the slider through a cylindrical pin installed in the pin hole; the inner rollers can rotate flexibly; the two end faces of the cylindrical pin shall not exceed the end face of the protruding part; The slider, the spring, and the inner rollers as a whole are all installed inside the rotating body, and the end face of the spring is in contact with the inner wall of the rotating body. The protruding part with the inner rollers and the cylindrical pin is located in the slot on the lower part of the side wall of the rotating body; the spring is used to realize the radial pressing between the slider and the pressing block; The handle is connected to the rotating pressing plate and is used to drive the rotating pressing plate to rotate; After assembly, the axial clearance between the rotating body and the locking nut is 0.05 - 0.1 mm, and the axial runout of the rotating body is less than or equal to 0.1 mm.

2. The manual rolling wave tooling for catheter according to claim 1, characterized in that: The half-ring and the locking collar are in inclined plane fit.

3. The manual rolling wave tooling for the catheter according to claim 2, characterized in that: On the end face of the rotating pressing plate, a pin hole is provided. After sequentially installing a spring and a steel column in this pin hole, then install the handle and connect the handle and the rotating pressing plate with a cylindrical pin.

4. The manual rolling wave tooling for catheter according to claim 3, wherein: The limit sleeve is connected to the locking nut with a countersunk head screw.

5. The manual rolling wave tooling for catheter according to claim 4, characterized in that: The bearing is a needle bearing.

Images