CN211807822U - Anti-filling forming device for catheter head end - Google Patents
Anti-filling forming device for catheter head end Download PDFInfo
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- CN211807822U CN211807822U CN201922209313.9U CN201922209313U CN211807822U CN 211807822 U CN211807822 U CN 211807822U CN 201922209313 U CN201922209313 U CN 201922209313U CN 211807822 U CN211807822 U CN 211807822U
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Abstract
The utility model discloses a catheter head end anti-filling forming device, which comprises a forming die, a core needle and a base frame assembly, wherein the forming die is provided with a die cavity, the left end of the die cavity is provided with a tail hole, and the right end of the die cavity is opened; the core needle comprises a tensioning section, a reducing section and a forming section, wherein the diameter of the reducing section is gradually increased from left to right, and the aperture of the tail hole is larger than that of the tensioning section and smaller than that of the left end of the reducing section; the base frame assembly comprises a base frame main body, a heating element, a first clamping assembly and a second clamping assembly, the first clamping assembly and the second clamping assembly are arranged on the left side and the right side of the forming die, the first clamping assembly is connected with the base frame main body in a left-right sliding mode, and the second clamping assembly is connected with the base frame main body in a left-right sliding mode. When the guide tube is used, the guide tube can be sleeved on the outer side of the core needle, then the guide tube and the core needle are pushed into the die cavity together, the position where the reducing section is located is a tube cavity of the formed guide tube, and the diameter of the reducing section is gradually increased from left to right, so that the tube cavity of the formed guide tube has a certain taper.
Description
Technical Field
The utility model relates to a tubular product processing technology field especially relates to a forming device is prevented filling by pipe head end.
Background
The head end of a part of the catheter needs to be manufactured into a shape with a certain taper and the inner diameter of the catheter is much larger than the hole of the head end of the catheter, namely, the lumen of the catheter also has a certain taper, such as a hemodialysis catheter. In the production process of the medical catheter, a tube with straight two ends is manufactured, and then a tip at the end part of the tube is manufactured by using a catheter head end forming device.
The existing catheter tip molding device, such as chinese patent "hard polymer tube port molding tooling" (publication number: CN204172313U), includes a molding die, a core pin and a heating element, the molding die is provided with a die cavity for molding the catheter tip, the die cavity has a shape like a bullet, the front end of the die cavity is provided with a tail hole for extruding redundant catheter material; the diameter of the core needle is matched with the inner diameter of the conduit and is larger than the aperture of the tail hole, so that the overflow edge generated when the redundant conduit material is extruded can be cut off; when the injection molding machine is used, the heating element heats the molding mold to the temperature capable of melting the guide pipe, the guide pipe is sleeved on the core needle, the front end of the guide pipe protrudes partially relative to the front end of the core needle, and then the guide pipe and the core needle can be pressed into the mold cavity together to complete the molding. However, since the outer diameter of the core needle is the same as the bore diameter of the head end of the catheter and smaller than the inner diameter of the catheter, the molten material of the catheter is filled into the lumen of the catheter during the molding process, and the lumen of the catheter cannot form a certain taper. Thus, the prior art still has disadvantages.
SUMMERY OF THE UTILITY MODEL
The utility model discloses aim at solving one of the technical problem that exists among the prior art at least. Therefore, the utility model provides a forming device is prevented filling by pipe head end, its lumen that enables the pipe has certain tapering.
The anti-filling forming device for the head end of the catheter comprises a forming die, a core needle and a base frame assembly, wherein the core needle and the base frame assembly are transversely arranged; the core needle comprises a tensioning section, a reducing section and a forming section, the left end of the forming section is connected with the right end of the reducing section, the left end of the reducing section is connected with the right end of the tensioning section, the diameter of the reducing section is gradually increased from left to right, the aperture of the tail hole is larger than that of the tensioning section and smaller than that of the left end of the reducing section, the tensioning section penetrates through the tail hole, and the reducing section is arranged in the die cavity; the bed frame subassembly includes bed frame main part, heating element, is used for the centre gripping the first centre gripping subassembly of taut section and be used for the centre gripping the second centre gripping subassembly of shaping section, first centre gripping subassembly is located the forming die left, the second centre gripping subassembly is located the forming die is right-hand, first centre gripping subassembly with bed frame main part horizontal sliding connection, the second centre gripping subassembly with bed frame main part horizontal sliding connection, forming die with bed frame main part rigid coupling, heating element locates the forming die side.
According to the utility model discloses forming device is prevented filling by pipe head end has following technological effect at least: during the use, can overlap the pipe in the core needle outside, then in pipe and the core needle together pushed into the die cavity, the position at reducing section place is the lumen of the pipe after the shaping, and reducing section can prevent that the melting material of pipe can fill to the lumen of pipe, because reducing section's diameter is crescent from left to right, the lumen of the pipe after the shaping has certain tapering.
According to some embodiments of the present invention, the first clamping assembly comprises a first base and a first finger cylinder provided on the first base, the first base is connected to the base frame body in a sliding manner.
According to some embodiments of the present invention, a first guide rail is disposed on the base frame main body, a first slider is disposed on the first guide rail, and the first base is fixedly connected to the first slider; the base frame main part is provided with a first cylinder transversely arranged, and the fixed end and the movable end of the first cylinder are respectively connected with the base frame main part and the first base.
According to some embodiments of the utility model, the second centre gripping subassembly includes the second base and locates second finger cylinder on the second base, the second base with bed frame main part side-to-side sliding connection.
According to some embodiments of the present invention, a second guide rail is disposed on the base frame main body, a second slider is disposed on the second guide rail, and the second base is fixedly connected to the second slider; the base frame main body is provided with a second cylinder which is transversely arranged, and a fixed end and a movable end of the second cylinder are respectively connected with the base frame main body and the second base.
According to the utility model discloses a some embodiments, be equipped with the response horizontal bar on the second base, be equipped with the speed response subassembly that detects the speed of response horizontal bar in the bed frame main part.
According to some embodiments of the utility model, the response horizontal bar is the rack, speed-sensing subassembly includes photoelectric sensor, gear and bars dish, the gear with rack toothing, the bars dish with the coaxial rotation of gear, photoelectric sensor's response end orientation the bars of bars dish.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
FIG. 1 is a front view of the structure of the embodiment of the present invention;
FIG. 2 is a structural attachment view of an embodiment of the present invention;
fig. 3 is a left side view of the structure of the embodiment of the present invention;
FIG. 4 is a schematic cross-sectional view at A in FIG. 1;
fig. 5 is a schematic diagram of the method at B in fig. 4.
Reference numerals:
a base frame main body 001, a first base 101, a first guide rail 102, a first slider 103, a first cylinder 104, and a first finger cylinder 105;
a molding die 210, a heating element 211;
the device comprises a correlation sensor 301, a grating disk 302, a rack 303, a second air cylinder 311, a second base 312, a second finger air cylinder 313, a clamping block 314 and a second guide rail 315;
a tensioning section 401, a shaping section 402, a conduit 403, a reducer section 404.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention.
In the description of the present invention, it should be understood that the orientation or positional relationship indicated with respect to the orientation description, such as up, down, front, rear, left, right, etc., is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. The terms "a" or "an" mean one or more, the terms "a" or "an" mean two or more, the terms larger than, smaller than, exceeding, and the like are understood to include the number, and the terms "larger than, smaller than, within, and the like are understood to include the number. If the first and second are described for the purpose of distinguishing technical features, they are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.
In the description of the present invention, unless there is an explicit limitation, the words such as setting, installation, connection, etc. should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above words in combination with the specific contents of the technical solution.
A catheter tip anti-filling molding device according to an embodiment of the present invention is described below with reference to fig. 1 to 5.
According to the utility model discloses forming device is prevented filling by pipe head end, include: the forming die comprises a forming die 210, a core pin and a base frame assembly which are transversely arranged, wherein the forming die is provided with a die cavity, the left end of the die cavity is provided with a tail hole, and the right end of the die cavity is opened; the core needle comprises a tensioning section 401, a reducing section 404 and a forming section 402, wherein the left end of the forming section 402 is connected with the right end of the reducing section 404, the left end of the reducing section 404 is connected with the right end of the tensioning section 401, the diameter of the reducing section 404 is gradually increased from left to right, the aperture of a tail hole is larger than the diameter of the tensioning section 401 and smaller than the diameter of the left end of the reducing section 404, the tensioning section 401 penetrates through the tail hole, and the reducing section 404 is arranged in a die cavity; the bed frame subassembly includes bed frame main part 001, heating element 211, a second centre gripping subassembly that is used for the first centre gripping subassembly of the taut section 401 of centre gripping and is used for centre gripping shaping section 402, forming die 210 left is located to first centre gripping subassembly, forming die 210 is right-hand located to the second centre gripping subassembly, first centre gripping subassembly and bed frame main part 001 horizontal sliding connection, second centre gripping subassembly and bed frame main part 001 horizontal sliding connection, forming die 210 and bed frame main part 001 rigid coupling, forming die 210 side is located to heating element 211.
For example, as shown in fig. 1 to 5, the first clamping assembly, the forming mold 210, and the second clamping assembly are arranged on the base frame body 001 at intervals from left to right, the core pin penetrates through the forming mold 210, the tensioning section 401 of the core pin is connected with the first clamping assembly, the forming section 402 of the core pin is connected with the second clamping assembly, and the diameter of the right end of the reducing section 404 is equal to the diameter of the forming section; the heating element 211 can be a high-frequency coil, and the heating element 211 is arranged at the periphery of the forming die 210 and can rapidly and uniformly heat the forming die 210; a die cavity for forming the head end of the guide pipe 403 is arranged in the forming die 210, the die cavity is shaped like a bullet, and the left end of the die cavity is provided with a tail hole for exhausting air; the diameter of the tensioning section 401 is smaller than that of the tail hole, so that air in the die cavity can be smoothly discharged, and the molten material in the guide pipe 403 can be discharged from the tail hole; the diameter of the left end of the reducer section 404 is larger than the diameter of the tail hole, so that the reducer section 404 can move leftwards to abut against the cavity wall of the mold cavity; the forming section 402, the reducing section 404 and the tensioning section 401 of the core pin can be an integral forming member.
When the device is used, the guide pipe 403 can be sleeved outside the core pin, a part of the left end of the guide pipe 403 exceeds the reducing section 404 to the left, after the heating element 211 heats the forming die 210 to the temperature required by the molten state of the guide pipe 403, the second clamping piece clamps the guide pipe 403 and the core pin and moves to the left, the guide pipe 403 and the core pin are pushed into the die cavity together, and the part of the left end of the guide pipe 403 exceeding the reducing section 404 provides required materials for forming the head end of the guide pipe 403; when the die cavity is filled with the molten material of the conduit 403, because the gap between the tensioning section 401 and the hole wall of the tail hole is small, the outflow resistance of the molten material is large, the conduit 403 and the core needle are difficult to continuously move to the left together, at the moment, the second clamping piece can release the core needle, the first clamping piece clamps the tensioning section and then moves to the left, the conduit 403 still stays in the die cavity, namely the core needle in the conduit 403 is pulled out to the left, the redundant molten material is extruded from the gap between the hole wall of the tail hole and the tensioning section 401 until the diameter-changing section 404 moves to the left to abut against the cavity wall of the die cavity, the diameter-changing section 404 cuts off and separates the molten material in the die cavity from the molten material in the tail hole, and the molten material flowing into the tail hole can be prevented from remaining at the head end of the conduit 403 and; the position of reducing section 404 is the lumen of the pipe after the shaping, and reducing section 404 can prevent that the molten material of pipe can fill to the lumen of pipe, because the diameter of reducing section 404 increases gradually from left to right, the lumen of the pipe after the shaping has certain tapering.
According to some embodiments of the present invention, the first clamping assembly comprises a first base 101 and a first finger cylinder 105 disposed on the first base 101, the first base 101 being slidably connected to the base frame body 001. Because the diameter of the reducing section 404 is gradually increased from left to right, the molded guide pipe 403 cannot move rightwards relative to the core pin, i.e. the guide pipe 403 cannot be taken down under the condition that the core pin does not exit from the die cavity; the first finger cylinder 105 is arranged to clamp the tensioning section, so that the tensioning section can be conveniently released after the forming is finished, then the second clamping assembly clamps the core pin and the guide pipe 403 to move rightwards, the core pin and the guide pipe 403 are taken out of the forming die 210, then the second clamping assembly releases the core pin and the guide pipe 403, and an operator can pull the core pin out of the formed guide pipe 403.
In some embodiments of the present invention, the first base 101 is connected to the base frame main body 001 through a rail-slider mechanism, the first base 101 is driven by the first cylinder 104, specifically, the base frame main body 001 is provided with a first rail 102, the first rail 102 is provided with a first slider 103, and the first base 101 is fixedly connected to the first slider 103; the base frame main body 001 is provided with a first cylinder 104 transversely arranged, and the fixed end and the movable end of the first cylinder 104 are respectively connected with the base frame main body 001 and the first base 101.
In some embodiments of the present invention, the second clamping assembly comprises a second base 312 and a second finger cylinder 313 disposed on the second base 312, and the second base 312 is slidably connected to the base frame body 001 in a left-right direction. As shown in fig. 1 and 2, the second finger cylinder 313 is transversely placed on the second base 312, the two clamping fingers of the second finger cylinder 313 are respectively and fixedly provided with the clamping block 314, the second finger cylinder 313 drives the two clamping blocks 314 to clamp the core needle and the conduit 403, and the clamping block 314 and the conduit 403 have larger contact area and are stably clamped; the main body of the second finger cylinder 313 can support the core needle and the guide pipe 403, so that the core needle and the guide pipe 403 are prevented from being inclined; simultaneously, the right-hand spacious of pipe, the utility model discloses do not have the restriction to the length of pipe, can cut the length that needs again after the shaping of pipe head end.
In some embodiments of the present invention, the second base 312 is connected to the pedestal main body 001 through a rail-slider mechanism, the second base 312 is driven by the second cylinder 311, specifically, the pedestal main body 001 is provided with a second rail 315, the second rail 315 is provided with a second slider, and the second base 312 is fixedly connected to the second slider; the base frame main body 001 is provided with a second cylinder 311 transversely arranged, and a fixed end and a movable end of the second cylinder 311 are respectively connected with the base frame main body 001 and the second base 312.
In some embodiments of the present invention, the second base 312 is provided with a sensing bar, and the base frame body 001 is provided with a speed sensing assembly for detecting the speed of the sensing bar. When the moving speed of the second base 312 is reduced to a certain degree or zero, it is determined that the mold cavity is filled with the molten material, and then the first clamping assembly can drive the core pin to move leftward; the induction horizontal bar can be a grating ruler, and the speed induction component can be a reading head of the grating ruler.
In some embodiments of the utility model, the response horizontal bar is rack 303, and the speed-sensing subassembly includes photoelectric sensor, gear and bars dish 302, and the gear meshes with rack 303, and bars dish 302 rotates with the gear is coaxial, and photoelectric sensor's response end is towards the bars of bars dish 302. As shown in fig. 1 to 3, a rotating shaft of the gear is vertically arranged, a grating disc 302 is arranged at the lower side of the gear, a plurality of vertically arranged grating bars are arranged on the grating disc 302, all the grating bars are uniformly arranged along the periphery of the grating disc 302, the photoelectric sensor is a correlation sensor 301, and the sensing area of the correlation sensor 301 is intersected with the moving area of the grating bars; according to the number of the bars and the interval time of two adjacent bars measured by the correlation sensor 301, the rotating speed of the grating disk 302 can be calculated, and further the moving speed of the rack 303 can be calculated.
While the preferred embodiments of the present invention have been described in detail, it will be understood by those skilled in the art that the foregoing and various other changes, omissions and deviations in the form and detail thereof may be made without departing from the scope of this invention.
Claims (7)
1. The utility model provides a forming device is prevented filling by pipe head end which characterized in that includes:
the forming die is provided with a die cavity, the left end of the die cavity is provided with a tail hole, and the right end of the die cavity is open;
the core needle is transversely arranged and comprises a tensioning section, a reducing section and a forming section, the left end of the forming section is connected with the right end of the reducing section, the left end of the reducing section is connected with the right end of the tensioning section, the diameter of the reducing section is gradually increased from left to right, the aperture of the tail hole is larger than that of the tensioning section and smaller than that of the left end of the reducing section, the tensioning section penetrates through the tail hole, and the reducing section is arranged in the die cavity;
the base frame assembly comprises a base frame main body, a heating element, a first clamping assembly and a second clamping assembly, wherein the first clamping assembly is used for clamping the tensioning section, the second clamping assembly is used for clamping the forming section, the first clamping assembly is arranged on the left side of the forming die, the second clamping assembly is arranged on the right side of the forming die, the first clamping assembly is connected with the base frame main body in a sliding mode in the left and right directions, the second clamping assembly is connected with the base frame main body in a sliding mode in the left and right directions, the forming die is fixedly connected with the base frame main body, and the heating element is arranged on the side of the forming.
2. The catheter tip anti-filling molding device of claim 1, wherein: the first clamping assembly comprises a first base and a first finger cylinder arranged on the first base, and the first base is connected with the base frame body in a left-right sliding mode.
3. The catheter tip anti-filling molding device of claim 2, wherein: the base frame main body is provided with a first guide rail, the first guide rail is provided with a first sliding block, and the first base is fixedly connected with the first sliding block; the base frame main part is provided with a first cylinder transversely arranged, and the fixed end and the movable end of the first cylinder are respectively connected with the base frame main part and the first base.
4. The catheter tip anti-filling molding device of claim 1, wherein: the second clamping assembly comprises a second base and a second finger cylinder arranged on the second base, and the second base is connected with the base frame body in a left-right sliding mode.
5. The catheter tip anti-filling molding device of claim 4, wherein: a second guide rail is arranged on the base frame main body, a second sliding block is arranged on the second guide rail, and the second base is fixedly connected with the second sliding block; the base frame main body is provided with a second cylinder which is transversely arranged, and a fixed end and a movable end of the second cylinder are respectively connected with the base frame main body and the second base.
6. The catheter tip anti-filling molding device of claim 4, wherein: the second base is provided with a sensing transverse strip, and the base frame main body is provided with a speed sensing assembly for detecting the speed of the sensing transverse strip.
7. The catheter tip anti-filling shaping device of claim 6, wherein: the induction transverse bar is a rack, the speed induction assembly comprises a photoelectric sensor, a gear and a grid plate, the gear is meshed with the rack, the grid plate and the gear rotate coaxially, and the induction end of the photoelectric sensor faces the grid bars of the grid plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922209313.9U CN211807822U (en) | 2019-12-10 | 2019-12-10 | Anti-filling forming device for catheter head end |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922209313.9U CN211807822U (en) | 2019-12-10 | 2019-12-10 | Anti-filling forming device for catheter head end |
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| Publication Number | Publication Date |
|---|---|
| CN211807822U true CN211807822U (en) | 2020-10-30 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922209313.9U Active CN211807822U (en) | 2019-12-10 | 2019-12-10 | Anti-filling forming device for catheter head end |
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| CN (1) | CN211807822U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113246452A (en) * | 2021-07-14 | 2021-08-13 | 广东大宇智能设备有限公司 | Dilator tip forming device and automatic tip forming machine |
-
2019
- 2019-12-10 CN CN201922209313.9U patent/CN211807822U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113246452A (en) * | 2021-07-14 | 2021-08-13 | 广东大宇智能设备有限公司 | Dilator tip forming device and automatic tip forming machine |
| CN113246452B (en) * | 2021-07-14 | 2021-10-22 | 广东大宇智能设备有限公司 | Dilator tip forming device and automatic tip forming machine |
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