Injection mold for mass production of digestive endoscope mouth pad
By designing a ring-shaped support, a fixed mold, and a radial displacement drive assembly, the problems of existing molds being unable to be mass-produced and quickly demolded are solved, enabling efficient production and automatic demolding of the endoscope mouth pad, thus improving the accuracy and safety of the examination.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- JIANGSU ANDAO MEDICAL TECHNOLOGY CO LTD
- Filing Date
- 2025-08-01
- Publication Date
- 2026-06-26
AI Technical Summary
Existing injection molds for producing gastrointestinal endoscope mouth pads cannot achieve mass production and rapid demolding.
The structure adopts a ring support, fixed mold, radial displacement drive assembly and moving mold. The radial displacement drive assembly drives the moving mold to move radially toward or away from the fixed mold. Combined with the design of micro push rod and core block, automatic demolding of the endoscope mouth pad is realized.
This technology enables mass production and rapid demolding of endoscope mouth pads, improving production efficiency and ensuring the accuracy and safety of endoscopic examinations.
Smart Images

Figure CN224408358U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of medical supplies technology, and in particular to an injection mold for mass production of digestive endoscope mouth pads. Background Technology
[0002] An endoscopy mouth pad, also known as a "mouth pad" or "tooth pad," is primarily used to maintain the patient's open mouth, ensuring smooth access and examination of the digestive tract. During gastroscopy, colonoscopy, and other digestive endoscopy procedures, the patient needs to bite down on the mouth pad. This action not only helps keep the mouth open, facilitating the doctor's operation, but also provides multiple protective functions. First, the mouth pad prevents the patient from biting their tongue or oral mucosa during the examination. Endoscopy can cause discomfort or tension, leading to unconscious biting movements; the soft texture and appropriate size of the mouth pad effectively alleviate this pressure, preventing injury. Second, the mouth pad also provides stability, ensuring the endoscope can be stably inserted through the mouth into the esophagus or other parts of the digestive tract. This stability is crucial for doctors, as it improves the accuracy and safety of the examination, reducing complications caused by improper operation or patient discomfort.
[0003] Most endoscope mouth pads are injection molded using injection molds. However, existing injection molds for producing endoscope mouth pads have shortcomings; they cannot achieve mass production or rapid demolding. Therefore, it is necessary to optimize and improve existing injection molds for producing endoscope mouth pads. Summary of the Invention
[0004] The purpose of this invention is to overcome the above-mentioned problems in the traditional technology and provide an injection mold for mass production of digestive endoscope mouth pads.
[0005] To achieve the above-mentioned technical objectives and effects, this utility model is implemented through the following technical solution:
[0006] A mass production injection mold for digestive endoscope mouth pads includes an annular support, a fixed mold, a radial displacement drive assembly, and a moving mold. The upper end of the annular support is open. The fixed mold is uniformly fixed circumferentially to the inner wall of the cylindrical portion of the annular support. A radial displacement drive assembly is installed at the center of the bottom plate of the annular support. The radial displacement drive assembly can drive the moving mold to move radially toward or away from the corresponding fixed mold. The bottom plate of the annular support has multiple blanking ports circumferentially.
[0007] The digestive endoscope mouth pad consists of a mouth pad tube, an arc-shaped mouth pad cover, and hooks. The arc-shaped mouth pad cover is installed at the front end of the mouth pad tube. Hooks are symmetrically arranged on both sides of the arc-shaped mouth pad cover. The mouth pad tube has an endoscope passage hole inside. The arc-shaped mouth pad cover has symmetrical weight reduction holes.
[0008] The fixed mold and the moving mold each have a semi-formed cavity that matches the shape of the endoscope's inlet. The fixed mold has a first receiving groove in the middle of its semi-formed cavity, and a first micro push rod is installed in the first receiving groove. The movable end of the first micro push rod is equipped with a first core block that matches the endoscope's through hole. The fixed mold has a first casting groove at the top of its semi-formed cavity. The moving mold has second receiving grooves symmetrically located at the top and bottom of its semi-formed cavity. A second micro push rod is installed on the rear side of the first receiving groove. The movable end of the second micro push rod is equipped with a second core block that matches the weight reduction hole. The moving mold has a second casting groove at the top of its semi-formed cavity.
[0009] Furthermore, in the above-mentioned injection mold for mass production of digestive endoscope mouth pads, the external cross-sectional shape of the first core block matches the cross-sectional shape of the first receiving groove, and the interior of the first core block is provided with a relief groove to facilitate the avoidance of the first micro push rod. The depth of the relief groove is less than the thickness of the first core block, and the depth of the first receiving groove is greater than the thickness of the first core block.
[0010] Furthermore, in the injection mold for mass production of the digestive endoscope mouth pad described above, the external cross-sectional shape of the second core block matches the cross-sectional shape of the second receiving groove, and the depth of the second receiving groove is greater than the thickness of the second core block.
[0011] Furthermore, in the injection mold used for mass production of the digestive endoscope mouth pad mentioned above, both the first micro push rod and the second micro push rod are electric push rods.
[0012] Furthermore, in the injection mold for mass production of the digestive endoscope mouth pad mentioned above, the first and second storage slots are each provided with a pressure relief vent that communicates with the outside.
[0013] Furthermore, in the above-mentioned injection mold for mass production of digestive endoscope mouth pads, the first and second gating grooves are joined to form a gating port, and a split gating system capable of simultaneously injecting liquid into each gating port is provided above the annular support. The split gating system can be raised and lowered under the drive of the lifting drive mechanism.
[0014] Furthermore, in the aforementioned injection mold for mass production of digestive endoscope mouth pads, the radial displacement drive assembly includes a housing. A rotary driver is installed on the inner wall of the bottom plate of the housing. A turntable is supported at the movable end of the rotary driver. A plurality of radial sliding holes are opened in the top plate of the housing along the circumference. A plurality of arc-shaped sliding grooves are opened in the upper side of the turntable along the circumference. A movable rod is slidably restricted in the radial sliding holes. The inner end of the movable rod is slidably restricted in the arc-shaped sliding grooves. A radially extending support plate is fixed to the outer end of the movable rod. A fixed mold is fixed to the outer end of the support plate.
[0015] Furthermore, in the injection mold for mass production of the above-mentioned digestive endoscope mouth pad, the cross-section of the arc-shaped groove has an inverted T-shaped structure that is narrow on the outside and wide on the inside.
[0016] The beneficial effects of this utility model are:
[0017] This utility model has a reasonable structural design, mainly consisting of an annular support, a fixed mold, a radial displacement drive assembly, and a moving mold. The radial displacement drive assembly drives the moving mold to move radially toward or away from the corresponding fixed mold. The fixed mold is uniformly fixed circumferentially on the inner wall of the cylindrical part of the annular support. The bottom plate of the annular support has multiple material discharge ports circumferentially located below the corresponding fixed mold. The fixed mold contains a first core block for forming the endoscope passage hole. When demolding, the first core block can be moved to the first receiving groove under the drive of the first micro push rod. The moving mold contains a second core block for forming the weight reduction hole. When demolding, the second core block can be moved to the second receiving groove under the drive of the second micro push rod. In this way, the formed digestive endoscope passage pad can be automatically demolded and dropped under its own gravity, falling into the collection area below through the material discharge port.
[0018] Of course, any product implementing this utility model does not necessarily need to achieve all of the above advantages at the same time. Attached Figure Description
[0019] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0020] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0021] Figure 2 This is a schematic diagram of the structure of the digestive endoscope mouth pad in this utility model;
[0022] Figure 3 This is a schematic diagram of the mold closing state of the fixed mold and the moving mold in this utility model;
[0023] Figure 4 This is a side view of the fixed mold in this utility model;
[0024] Figure 5 This is a side view of the moving mold in this utility model;
[0025] Figure 6 This is a schematic diagram of the radial displacement driving component in this utility model;
[0026] Figure 7This is a top view of the box body in this utility model;
[0027] Figure 8 This is a top view of the turntable of this utility model;
[0028] In the attached diagram, the components represented by each number are as follows:
[0029] 1- Annular support, 2- Fixed mold, 201- First storage slot, 202- First micro push rod, 203- First core block, 204- Clearance slot, 205- First casting slot, 3- Radial displacement drive assembly, 301- Box body, 302- Rotary drive, 303- Turntable, 304- Radial sliding hole, 305- Arc-shaped sliding groove, 306- Movable rod, 307- Support plate, 4- Moving mold, 401- Second storage slot, 402- Second micro push rod, 403- Second core block, 404- Second casting slot, 5- Endoscope port, 501- Portal tube, 502- Arc-shaped port cover, 503- Hook, 504- Endoscope through hole, 505- Weight reduction hole, 6- Discharge port. Detailed Implementation
[0030] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.
[0031] like Figures 1-8 As shown, this embodiment provides an injection mold for mass production of endoscope mouth pads, including an annular support 1, a fixed mold 2, a radial displacement drive assembly 3, and a moving mold 4. The upper end of the annular support 1 is open. The fixed mold 2 is uniformly fixed along the circumference of the inner wall of the cylindrical part of the annular support 1. The radial displacement drive assembly 3 is installed at the center of the bottom plate of the annular support 1. The radial displacement drive assembly 3 can drive the moving mold 4 to move radially toward or away from the corresponding fixed mold 2. The bottom plate of the annular support 1 has multiple material discharge ports 6 along the circumference, and the material discharge ports 6 are located below the corresponding fixed mold 2.
[0032] In this embodiment, the endoscope mouth pad 5 consists of a mouth pad tube 501, an arc-shaped mouth pad cover 502, and hooks 503. The arc-shaped mouth pad cover 502 is installed at the front end of the mouth pad tube 501, and hooks 503 are symmetrically arranged on both sides of the arc-shaped mouth pad cover 502. The mouth pad tube 501 has an endoscope passage hole 504 inside, and the arc-shaped mouth pad cover 502 has symmetrically arranged weight-reducing holes 505.
[0033] In this embodiment, the fixed mold 2 and the moving mold 4 each have a semi-formed cavity that matches the shape of the endoscope aperture 5. The fixed mold 2 has a first receiving groove 201 in the middle of its semi-formed cavity, in which a first micro push rod 202 is installed. The movable end of the first micro push rod 202 is fitted with a first core block 203 that matches the endoscope through hole 504. The fixed mold 2 has a first casting groove 205 at the top of its semi-formed cavity. The moving mold 4 has second receiving grooves 401 symmetrically formed at the top and bottom of its semi-formed cavity. The second micro push rod 402 is installed on the rear side of the first receiving groove 401. The movable end of the second micro push rod 402 is fitted with a second core block 403 that matches the weight reduction hole 505. The moving mold 4 has a second casting groove 404 at the top of its semi-formed cavity.
[0034] In this embodiment, the external cross-sectional shape of the first core block 203 matches the cross-sectional shape of the first storage groove 201. The interior of the first core block 203 is provided with a clearance groove 204 to facilitate the avoidance of the first micro push rod 202. The depth of the clearance groove 204 is less than the thickness of the first core block 203, and the depth of the first storage groove 201 is greater than the thickness of the first core block 203.
[0035] In this embodiment, the external cross-sectional shape of the second core block 403 matches the cross-sectional shape of the second storage groove 401, and the depth of the second storage groove 401 is greater than the thickness of the second core block 403.
[0036] In this embodiment, both the first micro push rod 202 and the second micro push rod 402 are electric push rods.
[0037] In this embodiment, the first storage slot 201 and the second storage slot 401 are each provided with a pressure relief vent that communicates with the outside.
[0038] In this embodiment, the first pouring tank 205 and the second pouring tank 404 are connected to form a pouring port. A split pouring system capable of simultaneously injecting liquid into each pouring port is provided above the annular support 1. The split pouring system can be raised and lowered under the drive of the lifting drive mechanism.
[0039] In this embodiment, the radial displacement drive assembly 3 includes a housing 301. A rotary driver 302 is installed on the inner wall of the bottom plate of the housing 301. A turntable 303 is supported at the movable end of the rotary driver 302. A plurality of radial sliding holes 304 are formed in the top plate of the housing 301 along the circumference. A plurality of arc-shaped sliding grooves 305 are formed in the upper side of the turntable 303 along the circumference. A movable rod 306 is slidably restricted in the radial sliding holes 304. The inner end of the movable rod 306 is slidably restricted in the arc-shaped sliding grooves 305. A support plate 307 extending radially is fixed to the outer end of the movable rod 306. A fixed mold 4 is fixed to the outer end of the support plate 307.
[0040] In this embodiment, the cross-section of the arc-shaped groove 305 has an inverted T-shaped structure that is narrow on the outside and wide on the inside.
[0041] A specific application of this embodiment is as follows: This mold mainly consists of an annular support 1, a fixed mold 2, a radial displacement drive assembly 3, and a moving mold 4. The radial displacement drive assembly 3 drives the moving mold 4 to move radially toward or away from the corresponding fixed mold 2. The fixed mold 2 is uniformly fixed on the inner wall of the cylindrical part of the annular support 1 along the circumference. The bottom plate of the annular support 1 has multiple material discharge ports 6 along the circumference. The material discharge ports 6 are located below the corresponding fixed mold 2. The fixed mold 2 is provided with a first core block 203 for forming the endoscope passage hole 504. When demolding, the first core block 203 can be moved to the first receiving groove 201 under the drive of the first micro push rod 202. The moving mold 4 is provided with a second core block 403 for forming the weight reduction hole 505. When demolding, the second core block 403 can be moved to the second receiving groove 401 under the drive of the second micro push rod 402. In this way, the formed digestive endoscope mouth pad 5 can be automatically demolded and dropped under its own gravity and fall into the collection area below through the material discharge port 6.
[0042] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to specific implementation methods. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.
Claims
1. An injection mold for mass production of endoscope mouth pads, characterized in that, The device includes an annular support, a fixed mold, a radial displacement drive assembly, and a moving mold. The upper end of the annular support is open. The fixed mold is uniformly fixed circumferentially to the inner wall of the cylindrical part of the annular support. The radial displacement drive assembly is installed at the center of the bottom plate of the annular support. The radial displacement drive assembly can drive the moving mold to move radially toward or away from the corresponding fixed mold. The bottom plate of the annular support has multiple material discharge ports circumferentially. The digestive endoscope mouth pad consists of a mouth pad tube, an arc-shaped mouth pad cover, and hooks. The arc-shaped mouth pad cover is installed at the front end of the mouth pad tube. Hooks are symmetrically arranged on both sides of the arc-shaped mouth pad cover. The mouth pad tube has an endoscope passage hole inside. The arc-shaped mouth pad cover has symmetrical weight reduction holes. The fixed mold and the moving mold each have a semi-formed cavity that matches the shape of the endoscope's inlet. The fixed mold has a first receiving groove in the middle of its semi-formed cavity, and a first micro push rod is installed in the first receiving groove. The movable end of the first micro push rod is equipped with a first core block that matches the endoscope's through hole. The fixed mold has a first casting groove at the top of its semi-formed cavity. The moving mold has second receiving grooves symmetrically located at the top and bottom of its semi-formed cavity. A second micro push rod is installed on the rear side of the first receiving groove. The movable end of the second micro push rod is equipped with a second core block that matches the weight reduction hole. The moving mold has a second casting groove at the top of its semi-formed cavity.
2. The injection mold for mass production of the mouth pad of a digestive endoscope according to claim 1, characterized in that, The external cross-sectional shape of the first core block matches the cross-sectional shape of the first storage groove. The interior of the first core block is provided with a clearance groove to facilitate the avoidance of the first micro push rod. The depth of the clearance groove is less than the thickness of the first core block, and the depth of the first storage groove is greater than the thickness of the first core block.
3. The injection mold for mass production of the endoscope mouth pad according to claim 1, characterized in that, The external cross-sectional shape of the second core block matches the cross-sectional shape of the second storage groove, and the depth of the second storage groove is greater than the thickness of the second core block.
4. The injection mold for mass production of the mouth pad of a digestive endoscope according to claim 1, characterized in that, Both the first and second miniature push rods are electric push rods.
5. The injection mold for mass production of the mouth pad of a digestive endoscope according to claim 1, characterized in that, The first and second storage slots are each provided with a pressure relief vent that communicates with the outside.
6. The injection mold for mass production of the mouth pad of a digestive endoscope according to claim 1, characterized in that, The first and second pouring tanks are joined together to form a pouring port. A split pouring system capable of simultaneously injecting liquid into each pouring port is provided above the annular support. The split pouring system can be raised and lowered under the drive of a lifting mechanism.
7. The injection mold for mass production of the mouth pad of a digestive endoscope according to claim 1, characterized in that, The radial displacement drive assembly includes a housing. A rotary driver is installed on the inner wall of the bottom plate of the housing. A turntable is supported at the movable end of the rotary driver. A plurality of radial sliding holes are opened in the top plate of the housing along the circumference. A plurality of arc-shaped sliding grooves are opened in the upper side of the turntable along the circumference. A movable rod is slidably restricted in the radial sliding holes. The inner end of the movable rod is slidably restricted in the arc-shaped sliding groove. A support plate extending radially is fixed to the outer end of the movable rod. A fixed mold is fixed to the outer end of the support plate.
8. The injection mold for mass production of the mouth pad of a digestive endoscope according to claim 7, characterized in that, The cross-section of the arc-shaped groove has an inverted T-shaped structure that is narrower on the outside and wider on the inside.