Injection mold for medical catheter

Abstract

The utility model discloses an injection mold for a medical catheter, which relates to the technical field of injection molds and comprises a mold body, and the bottom of the mold body is in threaded connection with a jacking device. The mold body is provided with a top wall and a bottom wall. A plurality of pouring channels are arranged from the top wall to the bottom wall in a penetrating manner; a plurality of hollow sleeves are fixedly arranged at the bottom of the jacking device, fixing columns are arranged in the hollow sleeves, and the fixing columns extend to the position below the top wall; a pouring area is formed between the fixed column and the pouring channel; and the hollow sleeve is movably arranged in the pouring channel. According to the injection mold, the injection mold is integrally designed, so that the injection molding process of the medical catheter is more stable, the jacking device is arranged at the bottom of the mold body, and the catheter is conveniently taken out through thread fit after casting molding by reserving a thread interval. The casting molding consistency is improved, the waste of castable is reduced due to the integrated design, meanwhile, the device is simple in structure, the molding guide pipe is convenient to take out, and the production quality and the production efficiency are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of injection molds, in particular to an injection mold for a medical catheter. Background Art

[0002] Medical catheters are commonly used medical devices used to transport air, liquid, drugs or other biological substances inside or outside the body; common medical catheters include urinary catheters, gastric tubes, urinary catheters, vascular catheters, ventilator tubes, etc. Medical catheters are usually made using injection molds, by injecting castings into the mold cavity and forming the catheter shape after cooling.

[0003] In the related art, injection molds generally use split molds, which makes it easy for the product to have defects during molding. After injection molding, the catheter is stuck in the upper mold cavity or the lower mold cavity, making it difficult to demold. Forced removal can easily cause wear on the catheter wall, resulting in a low product qualification rate. Utility Model Content

[0004] The purpose of the present utility model is to provide an injection mold for a medical catheter to solve at least one aspect of the problems and defects raised in the above-mentioned background technology.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] An injection mold for a medical catheter, comprising:

[0007] A mold body, wherein a lifting device is threadedly connected to the bottom of the mold body;

[0008] The mold body has a top wall and a bottom wall;

[0009] A plurality of pouring channels are provided from the top wall to the bottom wall;

[0010] A plurality of hollow sleeves are fixedly arranged at the bottom of the jacking device, and a fixing column is arranged inside the hollow sleeve, and the fixing column extends to the bottom of the top wall;

[0011] A pouring area is formed between the fixing column and the pouring channel;

[0012] The hollow sleeve is movably arranged in the pouring channel.

[0013] The injection mold for medical catheter according to this solution has at least the following technical effects:

[0014] The injection mold for medical catheters makes the injection molding process of medical catheters more stable by integrating the injection mold, and a lifting device is provided at the bottom of the mold body. By reserving the thread spacing, after casting and molding, the hollow sleeve moves upward through thread matching, and a part of the molded catheter in the casting area is pushed upward for easy removal. The device improves the consistency of casting and molding, and the integrated design reduces the waste of casting materials. At the same time, the device has a simple structure, is easy to use, and is easy to remove the molded catheter, thereby improving the product qualification rate and production efficiency.

[0015] As a further solution of the utility model: the outer wall diameter of the hollow sleeve matches the inner wall diameter of the pouring channel.

[0016] Since the outer wall diameter of the hollow sleeve matches the inner wall diameter of the casting channel, the top of the hollow sleeve seals the bottom of the casting channel, effectively preventing leakage of the injection plastic during the filling process, reducing the scrap rate, and ensuring the production quality and appearance integrity of the medical catheter.

[0017] As a further solution of the utility model: the inner side wall of the jacking device is provided with an internal thread, and the bottom of the internal thread is provided with a limiting rubber strip.

[0018] Since the inner wall of the lifting device is provided with an internal thread and a limiting rubber strip is provided at the bottom of the internal thread, when the thread spacing between the lifting device and the mold body is the largest, the limiting rubber strip limits the position of the hollow sleeve so that the hollow sleeve is located exactly at the inner bottom of the casting channel, thereby avoiding the thread spacing being too large or too small, resulting in inconsistent lengths of cast medical catheters, and further improving the product qualification rate and product consistency. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to facilitate understanding by those skilled in the art, the present invention is further described below in conjunction with the accompanying drawings.

[0020] Figure 1 It is a schematic diagram of the three-dimensional structure of an injection mold for a medical catheter;

[0021] Figure 2 A schematic diagram of a top view structure of an injection mold for a medical catheter;

[0022] Figure 3 This is a schematic diagram of an injection mold lifting device for a medical catheter.

[0023] Reference numerals:

[0024] 10. Mold body; 101. Top wall; 102. Bottom wall; 103. Casting channel; 104. Casting area; 20. Lifting device; 201. Hollow sleeve; 202. Fixed column; 203. Internal thread; 204. Limiting rubber strip. DETAILED DESCRIPTION

[0025] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0026] In the description of the present invention, it should be understood that descriptions involving orientation, such as up, down, front, back, left, right, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do 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 therefore cannot be understood as a limitation on the present invention.

[0027] In the description of the present utility model, "several" means one or more, "more" means more than two, "greater than", "less than", "exceed" etc. are understood to exclude the number itself, and "above", "below", "within" etc. are understood to include the number itself. If there is a description of "first" or "second", it is only used for the purpose of distinguishing the technical features, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0028] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0029] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the utility model and are not used to limit the utility model, that is, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. The components of the embodiments of the utility model described and shown in the drawings here can be arranged and designed in various different configurations.

[0030] Therefore, the following detailed description of the embodiments of the utility model provided in the accompanying drawings is not intended to limit the scope of the utility model claimed for protection, but merely represents selected embodiments of the utility model. Based on the embodiments of the utility model, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the utility model.

[0031] like Figure 1-3The embodiment of the utility model shown is an injection mold for a medical catheter, comprising: a mold body 10, a lifting device 20 is threadedly connected to the bottom of the mold body 10; the mold body 10 has a top wall 101 and a bottom wall 102; a plurality of pouring channels 103 are arranged through the top wall 101 and the bottom wall 102; a plurality of hollow sleeves 201 are fixedly arranged at the bottom of the lifting device 20, and a fixing column 202 is arranged in the hollow sleeve 201, and the fixing column 202 extends to the bottom of the top wall 101; a pouring area 104 is formed between the fixing column 202 and the pouring channel 103; the hollow sleeve 201 is movably arranged in the pouring channel 103.

[0032] Specifically, the injection mold for medical catheters makes the injection molding process of medical catheters more stable by integrating the injection mold, and by providing a lifting device 20 at the bottom of the mold body 10, by reserving the thread spacing, after casting and molding, the hollow sleeve 201 moves upward through thread matching, and a part of the molded catheter in the casting area 202 is pushed upward for easy removal. The device improves the consistency of casting and molding, and the integrated design reduces the waste of casting materials. At the same time, the device has a simple structure, is easy to use, and is easy to remove the molded catheter, thereby improving the product qualification rate and production efficiency.

[0033] According to the embodiment of the present invention, the outer wall diameter of the hollow sleeve 201 matches the inner wall diameter of the pouring channel 103 .

[0034] Specifically, since the outer wall diameter of the hollow sleeve 201 matches the inner wall diameter of the casting channel 103, the top of the hollow sleeve 201 seals the bottom of the casting channel 103, effectively preventing the casting material from leaking during the filling process, reducing the scrap rate, and ensuring the production quality and appearance integrity of the medical catheter.

[0035] like Figure 3 As shown, an inner wall of the lifting device 20 is provided with an internal thread 203 , and a limiting rubber strip 204 is provided at the bottom of the internal thread 203 .

[0036] Specifically, since the inner wall of the lifting device 20 is provided with an internal thread 203 and the bottom of the internal thread 203 is provided with a limiting rubber strip 204, when the thread spacing between the lifting device 20 and the mold body 10 is the largest, the limiting rubber strip 204 limits the hollow sleeve 201 so that it is located exactly at the inner bottom of the casting channel 103, thereby avoiding the thread spacing being too large or too small, resulting in inconsistent lengths of cast medical catheters, and further improving the product qualification rate and product consistency.

[0037] It should also be noted that the pouring channels 103 of the injection mold for the medical catheter can be set to different numbers, and the hole spacing of the pouring channels 103 can be set according to different medical catheters to be suitable for different medical catheters.

[0038] The above contents are merely examples and explanations of the structure of the utility model. The technicians in this technical field may make various modifications or additions to the specific embodiments described or replace them in a similar manner. As long as they do not deviate from the structure of the utility model or exceed the scope defined in the claims, they should all fall within the protection scope of the utility model.

Claims

1. An injection mold for a medical catheter, characterized in that: include: A mold body (10), wherein a lifting device (20) is threadedly connected to the bottom of the mold body (10); The mold body (10) has a top wall (101) and a bottom wall (102); A plurality of pouring channels (103) are provided from the top wall (101) to the bottom wall (102); A plurality of hollow sleeves (201) are fixedly arranged at the bottom of the lifting device (20), and a fixing column (202) is arranged inside the hollow sleeve (201), and the fixing column (202) extends to below the top wall (101); A pouring area (104) is formed between the fixing column (202) and the pouring channel (103); The hollow sleeve (201) is movably arranged in the pouring channel (103).

2. The injection mold for a medical catheter according to claim 1, characterized in that: The outer wall diameter of the hollow sleeve (201) matches the inner wall diameter of the pouring channel (103).

3. The injection mold for a medical catheter according to claim 1, characterized in that: The inner side wall of the lifting device (20) is provided with an internal thread (203), and the bottom of the internal thread (203) is provided with a limiting rubber strip (204).

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