CN217293282U

CN217293282U - Plastic mould for manufacturing motor shell of catheter pump

Info

Publication number: CN217293282U
Application number: CN202220372268.8U
Authority: CN
Inventors: 刘欢; 巩郑; 李帅康; 冯启涛; 万传杨
Original assignee: Anhui Tongling Bionic Technology Co Ltd
Current assignee: Anhui Tongling Bionic Technology Co Ltd
Priority date: 2022-02-17
Filing date: 2022-02-17
Publication date: 2022-08-26
Anticipated expiration: 2032-02-17

Abstract

The utility model relates to a make mould technical field, in particular to a plastic mold for making motor housing of catheter pump, the plastic mold includes the first mould monomer, the second mould monomer of plastics material to and the dabber of inserting between first mould monomer and second mould monomer, the cover is equipped with the coil winding on the dabber, first mould monomer and second mould monomer on all be equipped with the shaping face and after closing mold each other with the surface of coil enclose form the shaping chamber of motor housing; the utility model discloses an adopt the first mould monomer of plastics material, second mould monomer and spindle to enclose around the coil of establishing and close the one-tenth die cavity that forms motor housing, because the mould itself of plastics material has better self-lubricating characteristic, can avoid paining the release agent at motor housing's injection moulding in-process, avoided among the prior art metal mold need paint the drawback of release agent when using, the promotion that is showing motor housing's manufacturing efficiency.

Description

Plastic mould for manufacturing motor shell of catheter pump

Technical Field

The utility model relates to a make mould technical field, in particular to a plastic mold for making catheter pump motor shell.

Background

When the traditional medical treatment cannot achieve satisfactory curative effect and the heart transplantation faces difficulties of donor shortage, postoperative rejection and the like, researchers propose a method for assisting the heart recovery by using a mechanical device, namely a Ventricular Assist Device (VAD), namely an artificial mechanical device which leads blood out of a venous system or a heart and directly pumps the blood into an arterial system to partially or completely replace ventricles to do work.

A typical ventricular assist device at present generally includes: an inflow catheter connected to the left ventricle, an outflow catheter connected to the aorta, and a catheter pump connected between the inflow catheter and the outflow catheter, the catheter pump including a motor housing, a stator, a coil, a rotor, a rotating shaft, a bearing, etc.,

the catheter pump is a very precise structure, the precision requirement on each part is high in the manufacturing process of the catheter pump, a metal mold is generally used for injection molding in the manufacturing process of a motor shell of the existing catheter pump, however, the metal mold needs to be coated with a release agent in the using process so as to facilitate the removal of a finished product, and the manufacturing cost of the metal mold is high.

SUMMERY OF THE UTILITY MODEL

Based on the technical problem mentioned in the above background, the present invention aims to provide a plastic mold for manufacturing a casing of a motor of a catheter pump, so as to overcome the defects that the metal mold in the prior art needs to be coated with a release agent when in use, and the manufacturing cost of the metal mold is high.

In order to achieve the above purpose, the utility model adopts the following technical scheme to realize:

the utility model provides a plastic mold for making catheter pump motor shell, plastic mold includes the first mould monomer, the second mould monomer of plastics material to and plant the dabber between first mould monomer and second mould monomer, the dabber is equipped with the coil winding, first mould monomer and second mould monomer on all be equipped with the shaping face and after the compound die each other with the surface of coil encloses the shaping chamber that closes formation motor shell.

Preferably, the two side edges of the first mold unit are provided with grooves extending along the length direction of the first mold unit, the grooves correspond to the protrusions arranged on the side edges of the second mold unit, and after the first mold unit and the second mold unit are closed to each other, the grooves and the protrusions form a spigot fit.

Preferably, the end of the first mold single body and/or the second mold single body is provided with a feeding port communicated with the molding cavity.

Preferably, two ends of the mandrel extend out of the first die unit and the second die unit.

Compared with the prior art, based on the utility model provides a plastic mold for manufacturing catheter pump motor shell, through adopting the first mould monomer of plastics material, the second mould monomer encloses the shaping chamber that forms motor shell with the coil of establishing around the dabber, because the mould of plastics material itself has better self-lubricating characteristic, can avoid smearing the release agent in the injection moulding process of motor shell, avoided the drawback that the metal mold need smear the release agent when using among the prior art, apparent promotion the manufacturing efficiency of motor shell;

furthermore, the utility model discloses in, the mould accessible injection moulding of plastics material itself obtains, and the manufacturing cost who compares in metal mold is lower.

Other features and advantages of the present invention will be described in detail in the following detailed description.

Drawings

Fig. 1 is a schematic structural view of a plastic mold for manufacturing a motor housing of a catheter pump according to an embodiment of the present invention after mold assembly;

FIG. 2 is a schematic structural view of the plastic mold shown in FIG. 1 when the mold is not closed;

fig. 3 is a schematic view of the plastic mold of the present invention when forming the motor casing;

the reference numbers in the figures illustrate: 10. a first mold monomer; 11. a groove; 12. a material injection port; 20. a second mold monomer; 21. a projection; 30. and (3) a mandrel.

Detailed Description

In order to make the technical means, creation characteristics, achievement purpose and efficacy of the utility model easy to understand and understand, the utility model is further clarified by combining the specific drawings.

It should be noted that, in the present invention, when an element is referred to as being "fixed" to another element, it may be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

As mentioned before, combine fig. 1, 2, 3 to show, the utility model provides a plastic mold for making catheter pump motor shell, plastic mold includes the first mould monomer 10, the second mould monomer 20 of plastics material to and plant the dabber 30 between first mould monomer 10 and second mould monomer 20, the cover is equipped with coil winding (not shown in the figure) on the dabber 30, first mould monomer 10 and second mould monomer 20 on all be equipped with the shaping face and after the compound die each other with the surface of coil encloses the shaping chamber that closes formation motor shell.

The utility model provides an among the technical scheme, through adopting the first mould monomer 10 of plastics material, second mould monomer 20 and the dabber 30 on the coil of establishing encloses to close and forms the shaping chamber of motor housing, because the mould of plastics material itself has better self-lubricating characteristic, can avoid smearing the release agent in the injection moulding process of motor housing, avoided among the prior art the metal mold need smear the drawback of release agent when using, apparent promotion motor housing's manufacturing efficiency; furthermore, the utility model discloses in, the mould accessible injection moulding of plastics material itself obtains, and the manufacturing cost who compares in metal mold is lower.

Specifically, the utility model discloses in, first mould monomer 10, second mould monomer 20 and dabber 30 adopt PP resin injection moulding to form for the material of shaping motor housing is epoxy.

Further, according to the utility model provides a plastic mold, the both sides limit department of first mould monomer 10 is equipped with the recess 11 that extends along its length direction, recess 11 is corresponding with the bulge 21 that sets up in second mould monomer 20 side department, and after first mould monomer 10 and second mould monomer 20 compound die each other, recess 11 with bulge 21 constitutes the tang cooperation.

Through the cooperation of the groove 11 and the protruding part 21, the first mold unit 10 and the second mold unit 20 can be conveniently closed, and the overflow of epoxy resin in the molding cavity can be effectively prevented through the cooperation of the groove 11 and the protruding part 21, so that the injection molding quality of the motor shell is ensured.

The utility model discloses in, the tip of first mould monomer 10 and/or second mould monomer 20 be equipped with sprue 12 with the molding cavity is linked together. If the injection ports are formed at the ends of the first mold unit 10 and the second mold unit 20, the injection speed of the epoxy resin can be theoretically increased, and the injection molding efficiency of the motor housing can be improved.

The utility model discloses in, first mould monomer 10 and second mould monomer 20 are stretched out at dabber 30's both ends, so, and the end of hanging of dabber 30 is controlled or fixed to the accessible in order to make things convenient for the compound die of first mould monomer 10 and second mould monomer 20, conveniently injects epoxy into the one-tenth die cavity to and convenient subsequent drawing of patterns operation.

Based on the utility model provides a plastic mold, when specifically using, around establishing the coil on dabber 30, then place between first mould monomer 10 and second mould monomer 20, make its compound die each other, pour into epoxy into to the one-tenth die cavity through sprue 12 after that, treat that the notes material is accomplished, after the epoxy cooling solidification, take out dabber 30, installation rotor can in the space that dabber 30 occupy.

The foregoing shows and describes the general principles, essential features, and features of the invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments, and the description of the above embodiments and the description is only illustrative of the principles of the present invention, and that various changes and modifications may be made without departing from the spirit and scope of the present invention, and these changes and modifications are all within the scope of the present invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. The plastic mold for manufacturing the motor shell of the catheter pump is characterized by comprising a first mold unit (10) and a second mold unit (20) which are made of plastic materials, and a mandrel (30) inserted between the first mold unit (10) and the second mold unit (20), wherein a coil winding is sleeved on the mandrel (30), and the first mold unit (10) and the second mold unit (20) are provided with forming surfaces which are matched with each other and then enclose the surfaces of the coils to form a forming cavity of the motor shell.

2. The plastic mold for manufacturing a motor housing of a catheter pump according to claim 1, wherein the first mold unit (10) is provided at both side edges thereof with grooves (11) extending in the length direction thereof, the grooves (11) correspond to the protrusions (21) provided at the side edges of the second mold unit (20), and the grooves (11) and the protrusions (21) constitute a spigot engagement after the first mold unit (10) and the second mold unit (20) are clamped to each other.

3. The plastic mold for manufacturing a motor casing of a catheter pump according to claim 1, characterized in that the end of the first mold unit (10) and/or the second mold unit (20) is provided with a sprue (12) which is communicated with the molding cavity.

4. The plastic mold for manufacturing a motor housing of a catheter pump according to claim 1, wherein both ends of the mandrel (30) protrude out of the first mold unit (10) and the second mold unit (20).