Capsule rear shell injection molding method, capsule rear shell, capsule shell and capsule endoscopy

Abstract

The invention discloses a capsule rear shell injection molding method, a capsule rear shell, a capsule shell and a capsule endoscopy, and relates to the technical field of capsule endoscopes. The capsule rear shell injection molding method comprises the steps that the position, corresponding to the center position of the inner surface of the closed end of the capsule shell, of the injection molding cavity serves as a plastic feeding point, injection molding is conducted, plastic is emitted from middle to outside to fill the injection molding cavity, and therefore the capsule rear shell is subjected to injection molding. Based on the selection of the plastic feeding points, the plastic continuously moves from the central position of the injection molding cavity to the periphery, and the plastic which firstly enters the injection molding cavity also can generate pressure on the plastic which subsequently enters the injection molding cavity, so that the tightness of each structure of the capsule rear shell can be ensured; and the balance of the injection speed of the plastic in all directions can be ensured, the out-of-round problem of injection molding of the capsule shell can be effectively improved, the part breakage risk is reduced, and the part production efficiency and the yield are improved.

Description

Technical Field

[0001] The present invention relates to the technical field of capsule endoscopes, and in particular to a capsule rear shell injection molding method, a capsule rear shell, a capsule outer shell and a capsule endoscope. Background Art

[0002] In an existing capsule endoscope, the capsule shell includes a capsule rear shell and a light-transmitting front cover that is buckled with the capsule rear shell. When the capsule rear shell is injection-molded, one way of injecting glue is to inject glue at the mouth of the part. However, due to insufficient pressure and other reasons, the injection-molded part may be out of round, which affects the yield rate of the capsule rear shell.

[0003] Therefore, how to improve the out-of-round problem of capsule shell injection molding is a technical problem that technicians in this field currently need to solve. Summary of the invention

[0004] In view of this, an object of the present invention is to provide a method for injection molding a capsule back shell. The capsule back shell manufactured by the method, as well as the capsule outer shell and capsule endoscope including the capsule back shell, can improve the out-of-round problem of the capsule outer shell injection molding.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] A method for injection molding a capsule rear shell, wherein the capsule rear shell is applied to a capsule outer shell, and the capsule rear shell is a shell with one end open to connect to a light-transmitting front shell and the other end closed; the injection molding method comprises: taking a position on an injection molding cavity corresponding to the center position of the inner surface of the closed end of the capsule outer shell as a glue feeding point, and performing injection molding, wherein the plastic is diffused from the center to the outside to fill the injection molding cavity, thereby injection molding the capsule rear shell.

[0007] A capsule rear shell is manufactured by the above capsule rear shell injection molding method.

[0008] Preferably, the thickness at the center of the closed end of the capsule rear shell is greater than the thickness at the periphery thereof.

[0009] Preferably, a glue inlet convex point protruding inwardly is formed at the center of the inner surface of the closed end of the capsule rear shell.

[0010] Preferably, the capsule rear shell comprises a cylindrical tube and an outwardly convex spherical wall closing one end of the cylindrical tube, and the spherical wall is the closed end.

[0011] A capsule shell comprises a capsule rear shell and a transparent front shell connected to an opening of the capsule rear shell, wherein the capsule rear shell is the above capsule rear shell.

[0012] A capsule endoscope comprises a capsule shell and a capsule core arranged in the shell, wherein the capsule shell is the above-mentioned capsule shell.

[0013] The invention provides a method for injection molding a capsule rear shell, wherein the capsule rear shell is applied to a capsule outer shell, and the capsule rear shell is a shell with one end open to connect to a light-transmitting front shell and the other end closed; the injection molding method comprises: taking a position on an injection molding cavity corresponding to a central position of an inner surface of a closed end of the capsule outer shell as a glue feeding point, and performing injection molding, wherein the plastic is diffused from the center to the outside to fill the injection molding cavity, thereby injection molding the capsule rear shell.

[0014] Based on the selection of this injection point, the plastic continuously moves from the center of the injection cavity to the surrounding area, and the plastic that enters the injection cavity first will also exert pressure on the plastic that enters later, which can ensure the tightness of the structures at various locations on the back shell of the capsule. Moreover, since the plastic radiates from the center to the surrounding areas, the injection speed of the plastic in all directions can be balanced, which can effectively improve the out-of-roundness problem of the capsule shell injection molding, reduce the risk of parts breakage, and improve the production efficiency and yield rate of parts. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

[0016] Figure 1 It is a cross-sectional view of a specific embodiment 1 of the capsule rear shell provided by the present invention.

[0017] Reference numerals:

[0018] The capsule comprises a rear shell 1, a spherical wall 11, a glue inlet convex point 12, and a cylindrical tube 13. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0020] The core of the present invention is to provide a method for injection molding a capsule rear shell. The capsule rear shell manufactured by the method, as well as the capsule outer shell and capsule endoscope including the capsule rear shell, can improve the out-of-round problem of the capsule outer shell injection molding.

[0021] The capsule rear shell injection molding method provided by the present invention is used for injection molding a capsule rear shell, which is applied to a capsule outer shell and is a shell with one end open to connect with a light-transmitting front shell and the other end closed.

[0022] In a specific embodiment 1 of the injection molding method, during the injection molding process:

[0023] The position on the injection molding cavity corresponding to the center position of the inner surface of the closed end of the capsule shell is used as the injection point A, and the plastic is injected from the center to the outside to fill the injection molding cavity, thereby forming the capsule rear shell by injection molding.

[0024] At this time, if Figure 1 As shown, based on the selection of this injection point, the plastic continuously moves from the center of the injection cavity to the surrounding area, and the plastic that enters the injection cavity first will also exert pressure on the plastic that enters later, which can ensure the tightness of the structures at various locations on the back shell of the capsule. In addition, since the plastic radiates from the center to the surrounding areas, the uniformity of the plastic injection speed in all directions can be ensured, which can effectively improve the out-of-roundness problem of the capsule shell injection molding, reduce the risk of part breakage, and improve the part production efficiency and yield rate.

[0025] In addition to the above-mentioned capsule rear shell injection molding method, the present invention further provides a capsule rear shell, which is a capsule rear shell manufactured using the above-mentioned capsule rear shell injection molding method.

[0026] The capsule rear shell includes a cylindrical tube 13 and a convex spherical wall 11 that closes one end of the cylindrical tube 13, and the other end is open to connect to the light-transmitting front shell. The spherical wall 11 is a closed end. The closed end is set as a spherical structure, which can ensure that the capsule rear shell does not cause damage to the user.

[0027] Among them, since the injection pressure at the injection point is the largest, in this embodiment, the thickness at the center of the closed end of the capsule rear shell is set to be greater than the thickness around it. After thickening, it can be ensured that the outer circle b corresponding to the injection point on the capsule rear shell will not collapse, and a good part appearance can be maintained.

[0028] Specifically, a glue inlet convex point 12 protruding inward is formed at the center position of the inner surface of the closed end of the capsule rear shell, thereby achieving the wall thickness setting at the position corresponding to the glue inlet point on the capsule rear shell and ensuring the smoothness of the outer surface of the capsule rear shell.

[0029] In addition to the above-mentioned capsule rear shell, the present invention also provides a capsule outer shell, which includes a capsule rear shell 1 and a transparent front shell connected to the opening of the capsule rear shell 1. The capsule rear shell 1 can specifically be the capsule rear shell 1 provided in any of the above embodiments, and the beneficial effects can be referred to the above embodiments accordingly.

[0030] In addition, the present invention also provides a capsule endoscope using the above capsule shell, and the capsule endoscope also includes a capsule core arranged in the capsule shell. Other structures of the capsule shell and the capsule core can refer to the prior art and will not be described in detail herein.

[0031] It should be noted that when an element is referred to as "fixed" to another element, it may be directly on the other element or there may be an element in the middle. When an element is considered to be "connected" to another element, it may be directly connected to the other element or there may be an element in the middle. In addition, in the description of the present invention, unless otherwise specified, "multiple", "multiple roots", "multiple groups" mean two or more.

[0032] The terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features.

[0033] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used in the specification of the present invention herein are only for the purpose of describing specific embodiments and are not intended to limit the present invention.

[0034] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0035] The above is a detailed introduction to the capsule rear shell injection molding method, capsule rear shell, capsule outer shell and capsule endoscope provided by the present invention. Specific examples are used in this article to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is only used to help understand the method of the present invention and its core idea. It should be pointed out that for ordinary technicians in this technical field, without departing from the principle of the present invention, the present invention can also be improved and modified, and these improvements and modifications also fall within the scope of protection of the claims of the present invention.

Claims

1. A method for injection molding a capsule rear shell, characterized in that: The capsule rear shell is applied to the capsule outer shell, and the capsule rear shell is a shell with one end open to connect to the light-transmitting front shell and the other end closed; The injection molding method comprises: The position on the injection molding cavity corresponding to the center position of the inner surface of the closed end of the capsule shell is used as the injection point for injection molding, and the plastic is diffused from the center to the outside to fill the injection molding cavity, thereby injection molding the capsule rear shell.

2. A capsule rear shell, characterized in that: The capsule rear shell is manufactured by the injection molding method described in claim 1.

3. The capsule rear shell according to claim 2, characterized in that: The thickness of the central position of the closed end of the capsule rear shell is greater than the thickness of the surrounding position.

4. The capsule rear shell according to claim 2, characterized in that: A glue inlet convex point (12) protruding inwards is formed at the center of the inner surface of the closed end of the capsule rear shell.

5. The capsule rear shell according to claim 4, characterized in that: The capsule rear shell comprises a cylindrical tube (13) and an outwardly protruding spherical wall (11) closing one end of the cylindrical tube (13), wherein the spherical wall (11) is the closed end.

6. A capsule shell, characterized in that: The invention comprises a capsule rear shell and a transparent front shell connected to an opening of the capsule rear shell, wherein the capsule rear shell is the capsule rear shell according to any one of claims 2 to 5.

7. A capsule endoscope, characterized in that: It comprises a capsule shell and a capsule core arranged in the shell, and the capsule shell is the capsule shell according to claim 6.

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