CN211194770U - Medical injection needle tube forming die - Google Patents
Medical injection needle tube forming die Download PDFInfo
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- CN211194770U CN211194770U CN201922222143.8U CN201922222143U CN211194770U CN 211194770 U CN211194770 U CN 211194770U CN 201922222143 U CN201922222143 U CN 201922222143U CN 211194770 U CN211194770 U CN 211194770U
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- injection needle
- bottom tube
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Abstract
The utility model belongs to the technical field of needle tube molds, in particular to a medical injection needle tube forming mold, which comprises a bottom tube, a wedge-shaped conical column, a guide rod and a matching column, wherein the bottom of the bottom tube is provided with a limiting ring, the bottom tube is internally provided with a mounting groove extending inwards from the bottom surface of the bottom tube, the inner wall of the mounting groove is provided with an internal thread, the upper part of the bottom tube is provided with a plugging part, the wedge-shaped conical column is arranged at the middle position of the upper end surface of the bottom tube, and the top of the wedge-shaped conical column is provided with a conical part; be equipped with at the upper end of bottom tube and carve the type awl post to be equipped with guide bar and cooperation post in the top of carving the type awl post, at the in-process of compound die, can cooperate through the guide bar and the guide way that cooperates that corresponds on cooperation post and the mould, carry out accurate centering, guarantee that the clearance in the die cavity is even, and be equipped with on carving the type awl post and closing wedge face and exhaust cambered surface, provide exhaust passage, can exhaust with the fashioned in-process of product, improve the sunken condition on product surface.
Description
Technical Field
The utility model belongs to the technical field of the needle tubing mould, concretely relates to medical treatment injection needle tubing forming die.
Background
In recent years, with the increasing strength of precision-grade plastic molds, the yield of plastic products is increasing, the precision requirement is also increasing, and particularly, the plastic mold requirement of the medical industry is increasing. The plastic mold for producing plastic products is an indispensable important component in the whole production process of the plastic products, and the structure of the mold has direct influence on the product quality and the production process.
The existing needle tube forming mold core is long in length, poor in centering performance in the injection molding process, thin in tube wall, difficult in gas overflow, and possibly causes uneven wall thickness in a product or local depression on the surface of the product during production, so that the yield is reduced.
SUMMERY OF THE UTILITY MODEL
The utility model provides a medical injection needle tube forming die to solve the problem that proposes among the above-mentioned background art.
In order to achieve the above object, the utility model provides a following technical scheme:
the utility model provides a medical treatment injection needle tubing forming die, includes the bottom tube, carves type awl post, guide bar and cooperation post, the bottom of bottom tube is equipped with the spacing ring, the inside of bottom tube is equipped with the mounting groove by its bottom surface inward extension, the mounting groove inner wall is equipped with the internal thread, the upper portion of bottom tube is equipped with the shutoff portion, the up end intermediate position department of bottom tube is equipped with carve the type awl post, the top of carving the type awl post is equipped with the toper portion, the lower part of toper portion is equipped with the exhaust cambered surface, the top of exhaust cambered surface is equipped with shallow exhaust groove, the top intermediate position department of toper portion is equipped with the guide bar, the top intermediate position department of guide bar is equipped with the cooperation post, the cooperation post with be equipped with between the guide bar and connect the conical surface, the bottom tube, carve type awl post, guide bar and the axis of cooperation post and be concentric.
Preferably, the plugging portion comprises a plane plugging portion and an arc surface plugging portion, the arc surface plugging portion extends from the outer side end face of the bottom tube to the edge of the plane plugging portion, and the plane plugging portion extends from the edge of the arc surface plugging portion to the outer side end face of the wedge-shaped conical column.
Preferably, the cambered surface plugging portion is a chamfer inclined at forty-five degrees, and the plane plugging portion is a fillet of 0.5 mm.
Preferably, the thickness of the limiting ring is 4mm, the diameter of the limiting ring is 14mm, and the wall thickness of the bottom tube is 2 mm.
Preferably, the outer wall of the limiting ring is provided with an involutory end surface, the outer wall of the wedge-shaped conical column is provided with an involutory wedge surface which is distributed corresponding to the involutory end surface, and the involutory wedge surface extends from the bottom of the wedge-shaped conical column to the exhaust cambered surface.
Preferably, the exhaust arc surface is an arc-shaped annular groove, the diameter of the exhaust arc surface is 0.5mm, and the depth of the shallow exhaust groove is 0.025 mmmm.
Preferably, the top end of the matching column is provided with a conical head, the length of the conical head is 1mm, and the length of the matching column is 3 mm.
Preferably, the diameter of the guide rod is 0.75mm, and the diameter of the matching column is 0.6 mm.
Compared with the prior art, the beneficial effects of the utility model are that:
the utility model discloses be equipped with in the upper end of bottom tube and carve the type awl post to be equipped with guide bar and cooperation post in the top of carving the type awl post, at the in-process of compound die, can cooperate through the guide bar with the guide way that cooperates of correspondence on cooperation post and the mould, carry out accurate centering, guarantee that the clearance in the die cavity is even, and be equipped with on carving the type awl post to carving face and exhaust cambered surface, provide exhaust passage, can exhaust with the fashioned in-process of product, improve the sunken condition on product surface.
Drawings
The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention, and together with the description serve to explain the invention and not to limit the invention.
In the drawings:
fig. 1 is a schematic structural view of the present invention;
fig. 2 is a side view of the present invention;
FIG. 3 is a schematic view of the structure in the direction A-A in FIG. 2;
fig. 4 is a sectional view of the present invention.
In the figure:
1. a bottom tube; 101. mounting grooves; 102. an internal thread; 11. a limiting ring; 111. involuting end faces; 12. a plugging section; 121. a planar blocking portion; 122. a cambered surface plugging part;
2. a wedge-shaped conical column; 21. matching the wedge surfaces; 22. a tapered portion; 221. an exhaust arc surface; 222. a shallow exhaust groove;
3. a guide bar; 31. a connecting conical surface;
4. a mating post; 41. a conical head.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Referring to fig. 1-4, the present invention provides the following technical solutions: a medical injection needle tube forming die comprises a bottom tube 1, a wedge-shaped conical column 2, a guide rod 3 and a matching column 4, wherein a limiting ring 11 is arranged at the bottom of the bottom tube 1, a mounting groove 101 extending inwards from the bottom surface of the bottom tube 1 is formed in the bottom tube 1, internal threads 102 are formed in the inner wall of the mounting groove 101, a plugging portion 12 is formed in the upper portion of the bottom tube 1, the wedge-shaped conical column 2 is arranged at the middle position of the upper end face of the bottom tube 1, a conical portion 22 is arranged at the top of the wedge-shaped conical column 2, an exhaust arc surface 221 is arranged at the lower portion of the conical portion 22, a shallow exhaust groove 222 is formed above the exhaust arc surface 221, the guide rod 3 is arranged at the middle position of the top of the conical portion 22, the matching column 4 is arranged at the middle position of the top of the guide rod 3, a connecting conical surface 31 is arranged between the matching column 4 and the guide rod 3.
In the embodiment, the bottom of the bottom tube 1 is provided with a limiting ring 11, the bottom of the bottom tube 1 is provided with a mounting groove 101 extending inwards from the bottom surface, the inner wall of the mounting groove 101 is provided with an internal thread 102, the mounting groove 101 on the bottom tube 1 is mounted on a threaded column on a movable die and is screwed through the internal thread 102, the upper part of the bottom tube 1 is provided with a plugging part 12, a die on a die cavity is matched with the plugging part 12 to seal the die core, the middle position of the upper end surface of the bottom tube 1 is provided with a wedge-shaped conical column 2, the top of the wedge-shaped conical column 2 is provided with a conical part 22, the lower part of the conical part 22 is provided with an exhaust arc surface 221, a shallow exhaust groove 222 is arranged above the exhaust arc surface 221, in the injection molding process, bubbles in molten liquid can be exhausted through the exhaust arc surface 221 and the shallow exhaust groove 222 in the extrusion molding process, the middle position of the top of the conical part 22 is provided with, the connecting conical surface 31 is arranged between the matching column 4 and the guide rod 3, the axes of the bottom tube 1, the wedge-shaped conical column 2, the guide rod 3 and the matching column 4 are concentric, and the guide rod 3 and the matching column 4 mainly play a role in positioning and guiding the wedge-shaped conical column 2 and the bottom tube 1 to ensure that the wedge-shaped conical column 2 and the bottom tube 1 are positioned at the center of the die cavity.
Specifically, the blocking portion 12 includes a planar blocking portion 121 and an arc blocking portion 122, the arc blocking portion 122 extends from an outer end surface of the bottom tube 1 to an edge of the planar blocking portion 121, the planar blocking portion 121 extends from the edge of the arc blocking portion 122 to an outer end surface of the wedge-shaped conical column 2, and the blocking portion 12 with the design can ensure that the static mold and the wedge-shaped conical column 2 are in closed involution.
Specifically, the arc-shaped plugging portion 122 is a chamfer inclined at forty-five degrees, and the plane plugging portion 121 is a fillet of 0.5 mm.
Specifically, the thickness of spacing ring 11 is 4mm, and the diameter of spacing ring 11 is 14mm, guarantees that spacing ring 11 has reliable intensity, and the wall thickness of bottom tube 1 is 2 mm.
Specifically, the outer wall of the limiting ring 11 is provided with an involutory end surface 111, the outer wall of the wedge-shaped conical column 2 is provided with an involutory wedge surface 21 distributed corresponding to the involutory end surface 111, the involutory wedge surface 21 extends from the bottom of the wedge-shaped conical column 2 to the exhaust arc surface 221, and in the injection molding process, the molding liquid is pressurized to discharge air along the involutory wedge surface 21 and is discharged through the exhaust arc surface 221.
Specifically, the exhaust arc surface 221 is an arc-shaped annular groove, the diameter of the exhaust arc surface 221 is 0.5mm, and the depth of the shallow exhaust groove 222 is 0.025 mm.
Specifically, the top end of the matching column 4 is provided with a conical head 41, the length of the conical head 41 is 1mm, and the length of the matching column 4 is 3 mm.
Specifically, the diameter of the guide rod 3 is 0.75mm, and the diameter of the matching column 4 is 0.6 mm.
The utility model discloses a theory of operation and use flow: the inner wall of the mounting groove 101 is provided with internal threads 102, the mounting groove 101 on the bottom pipe 1 is mounted on a threaded column on a movable die, the inner thread 102 is screwed, the upper part of the bottom tube 1 is provided with a plugging part 12, a model on the mold cavity is jointed with the plugging part 12 to realize the closing of the mold core, in the injection molding process, bubbles in the molten liquid can be discharged through the exhaust arc surface 221 and the shallow exhaust groove 222 in the extrusion molding process, the guide rod 3 is arranged at the middle position of the top of the conical part 22, the matching column 4 is arranged at the middle position of the top of the guide rod 3, the connecting conical surface 31 is arranged between the matching column 4 and the guide rod 3, the bottom tube 1, the wedge-shaped conical column 2, the guide rod 3 and the matching column 4 are concentric in axis, and the guide rod 3 and the matching column 4 are mainly used for positioning and guiding the wedge-shaped conical column 2 and the bottom tube 1 to ensure that the wedge-shaped conical column 2 and the bottom tube 1 are in the central position of the mold cavity.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing embodiments, or equivalents may be substituted for elements thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (8)
1. The utility model provides a medical treatment injection needle pipe forming die which characterized in that: comprises a bottom pipe (1), a wedge-shaped conical column (2), a guide rod (3) and a matching column (4), wherein the bottom of the bottom pipe (1) is provided with a limiting ring (11), the inside of the bottom pipe (1) is provided with a mounting groove (101) which extends inwards from the bottom surface of the bottom pipe, the inner wall of the mounting groove (101) is provided with an internal thread (102), the upper part of the bottom pipe (1) is provided with a sealing part (12), the middle position of the upper end surface of the bottom pipe (1) is provided with the wedge-shaped conical column (2), the top of the wedge-shaped conical column (2) is provided with a conical part (22), the lower part of the conical part (22) is provided with an exhaust cambered surface (221), a shallow exhaust groove (222) is arranged above the exhaust cambered surface (221), the middle position of the top of the conical part (22) is provided with the guide rod (3), the middle position of the top of the guide rod (3), a connecting conical surface (31) is arranged between the matching column (4) and the guide rod (3), and the axes of the bottom tube (1), the wedge-shaped conical column (2), the guide rod (3) and the matching column (4) are concentric.
2. The medical injection needle tube molding die according to claim 1, wherein: the plugging portion (12) comprises a plane plugging portion (121) and an arc surface plugging portion (122), the arc surface plugging portion (122) extends from the outer side end face of the bottom pipe (1) to the edge of the plane plugging portion (121), and the plane plugging portion (121) extends from the edge of the arc surface plugging portion (122) to the outer side end face of the wedge-shaped conical column (2).
3. The medical injection needle tube molding die according to claim 2, wherein: the cambered surface plugging portion (122) is a chamfer inclined at forty-five degrees, and the plane plugging portion (121) is a fillet of 0.5 mm.
4. The medical injection needle tube molding die according to claim 1, wherein: the thickness of spacing ring (11) is 4mm, the diameter of spacing ring (11) is 14mm, the wall thickness of bottom tube (1) is 2 mm.
5. The medical injection needle tube molding die according to claim 1, wherein: the outer wall of the limiting ring (11) is provided with an involutory end surface (111), the outer wall of the wedge-shaped conical column (2) is provided with an involutory wedge surface (21) which is distributed corresponding to the involutory end surface (111), and the involutory wedge surface (21) extends from the bottom of the wedge-shaped conical column (2) to the exhaust arc surface (221).
6. The medical injection needle tube molding die according to claim 1, wherein: the exhaust arc surface (221) is an arc-shaped annular groove, the diameter of the exhaust arc surface (221) is 0.5mm, and the depth of the shallow exhaust groove (222) is 0.025 mm.
7. The medical injection needle tube molding die according to claim 1, wherein: the top of cooperation post (4) is equipped with conical head (41), the length of conical head (41) is 1mm, the length of cooperation post (4) is 3 mm.
8. The medical injection needle tube molding die according to claim 1, wherein: the diameter of the guide rod (3) is 0.75mm, and the diameter of the matching column (4) is 0.6 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922222143.8U CN211194770U (en) | 2019-12-12 | 2019-12-12 | Medical injection needle tube forming die |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922222143.8U CN211194770U (en) | 2019-12-12 | 2019-12-12 | Medical injection needle tube forming die |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211194770U true CN211194770U (en) | 2020-08-07 |
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ID=71884696
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922222143.8U Active CN211194770U (en) | 2019-12-12 | 2019-12-12 | Medical injection needle tube forming die |
Country Status (1)
| Country | Link |
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| CN (1) | CN211194770U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114025300A (en) * | 2021-11-26 | 2022-02-08 | 苏州星微奇精密科技有限公司 | Cavity needle, and cavity needle machining device and method |
-
2019
- 2019-12-12 CN CN201922222143.8U patent/CN211194770U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114025300A (en) * | 2021-11-26 | 2022-02-08 | 苏州星微奇精密科技有限公司 | Cavity needle, and cavity needle machining device and method |
| CN114025300B (en) * | 2021-11-26 | 2024-03-22 | 苏州星微奇精密科技有限公司 | Cavity needle, cavity needle processing device and processing method |
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