Medical forceps for gills with dark gill axis and powder injection mold thereof

Abstract

The invention discloses a medical forceps with hidden gill axis of gill part and a powder injection mold thereof. The medical forceps with hidden gill axis of gill part include a male forceps piece and a female forceps piece. Both the male forceps piece and the female forceps piece include a forceps head, a gill part and a forceps arm. The gill part of the female forceps piece includes two arc-shaped pressing pieces connected to the forceps head and the forceps arm respectively, and a protruding gill axis is arranged on the inner side of any one of the arc-shaped pressing pieces. The gill part of the male forceps piece includes a connecting piece connected to the forceps head and the forceps arm respectively, and a gill axis hole matching the gill axis is provided on the connecting piece. The connecting piece of the gill part of the male forceps piece is inserted into the middle of the two arc-shaped pressing pieces of the gill part of the female forceps piece, and the gill axis is inserted into the gill axis hole. The arc-shaped pressing piece is flattened by printing and pressing, and the male forceps piece and the female forceps piece are fixed and kept rotating smoothly. The invention uses powder injection technology to respectively injection mold the two forceps pieces of the medical forceps, and a hidden gill axis for connection is arranged on the inner side of the gill part of the two forceps pieces, and the connection of the two forceps pieces is arranged inside the forceps piece.

Description

Technical Field

[0001] The invention relates to the field of medical device manufacturing, and in particular to a pair of medical forceps for gills with hidden gill axes. Background Art

[0002] At present, most of the medical forceps used in hospitals are gill-piercing medical forceps, and the processing method of gill-piercing medical forceps is to cut the metal bar first, heat the cut bar to 700-800 degrees, and then press it into shape in a special pressing cavity mold. After the original and multiple punching, rough pressing, fine pressing, and blank shaping, the assembly size of the forceps is completed through milling, clamping, and grinding. Then, it is heated, expanded, and gill-pierced, and then flattened, shaped, punched, and rivets are installed to complete the assembly of the entire pair of pliers. After assembly, overall correction, grinding, and re-correction are required.

[0003] The processing of this type of gill-piercing medical forceps requires a lot of manpower, material resources, and financial resources, and is accompanied by defects such as high energy consumption, large environmental pollution, and low production efficiency. The most critical problem is that the original processing method is prone to overburning and overheating of the material after the forceps blank is processed by high-temperature heating, causing cavities and trachoma inside the forceps blank material, increasing the risk of the finished forceps breaking during use, and in severe cases, it may accidentally break during surgery and cause medical accidents. Therefore, it is necessary to invent a new structure of medical forceps and its manufacturing method.

[0004] In the prior art, Chinese patent application number: 201510682523.3, invention name: A kind of inlay-type medical forceps, discloses a new type of inlay-type medical forceps, the inlay-type medical forceps of the present invention changes the structure of the original gill-penetrating medical forceps, changes the shape of the gills of the original gill-penetrating forceps, slots are made at the upper end of the gills of the female piece, the gill protrusions of the male piece are inserted into the notches of the gills of the female piece, and the small positioning cylinder at the bottom of the gills of the female piece is inserted into the positioning countersunk hole under the gills of the male piece for positioning, and then rotated clockwise until the male and female pieces of the forceps are closed, and tightened by fixing screws. At the same time, the processes of the forceps head, finger ring, lock buckle, etc. that were originally to be completed by machining are completed at one time using the existing metal powder pressure injection molding technology.

[0005] In the prior art, although metal powder pressure injection molding technology is also used, it is still necessary to tighten the gills of the two pliers by fixing screws. During long-term use, the fixing position of the screws is prone to water accumulation and rust. Summary of the invention

[0006] The technical problem to be solved by the present invention is to provide a medical forceps with hidden gill axes on the gills and a powder injection mold thereof. The two blades of the medical forceps are respectively injection-molded by using powder injection technology. Hidden gill axes for connection are arranged on the inner sides of the gills of the two blades, and the connection between the two blades is arranged inside the blades.

[0007] In order to solve the above technical problems, the present invention provides a medical forceps with hidden gill axes on the gills, comprising a male forceps blade and a female forceps blade, wherein both the male forceps blade and the female forceps blade comprise a forceps head, a gill portion and a forceps arm, the gill portion of the female forceps blade comprises two arc-shaped pressing pieces respectively connected to the forceps head and the forceps arm, wherein a raised gill axis is arranged on the inner side of any one of the arc-shaped pressing pieces, the gill portion of the male forceps blade comprises a connecting piece respectively connected to the forceps head and the forceps arm, a gill axis hole matching the gill axis is arranged on the connecting piece, the connecting piece of the gill portion of the male forceps blade is inserted into the middle of the two arc-shaped pressing pieces of the gill portion of the female forceps blade, the gill axis is inserted into the gill axis hole, the arc-shaped pressing piece is flattened by pressing, the male forceps blade and the female forceps blade are fixed and kept rotating smoothly

[0008] In a preferred embodiment of the present invention, the inner sides of the pliers heads of the male pliers and the female pliers are both provided with lip teeth.

[0009] In a preferred embodiment of the present invention, the ends of the pliers arms of the male pliers and the female pliers are both provided with finger rings and locking teeth.

[0010] In order to solve the above technical problems, the present invention also provides a powder injection mold for medical forceps with hidden gill axes in the gills, which is used to manufacture the above medical forceps with hidden gill axes in the gills, including an upper mold and a bottom mold, and the upper mold and the bottom mold are combined to form a molding cavity, and the molding cavity includes a male forceps piece cavity and a female forceps piece cavity, and an insert is provided on one side of the female forceps piece cavity, and the upper and lower surfaces of the insert are both arc-shaped, and the insert divides the gill position of the female forceps piece cavity into two upper and lower parts to form two arc-shaped pressing pieces, and a groove is provided on one side of the insert, and the groove forms the gill axis, and a convex column is provided at the gill position of the male forceps piece cavity, and the convex column forms the gill axis.

[0011] In a preferred embodiment of the present invention, a plurality of lifting portion cavities are further provided in the molding cavity, and the lifting portion cavities are respectively connected with the male clamp piece cavity and the female clamp piece cavity, and the lifting portion cavity includes a plurality of point cavities provided on the sides of the male clamp piece cavity and the female clamp piece cavity and a connecting cavity provided between the male clamp piece cavity and the female clamp piece cavity, and an ejector pin hole is provided below the lifting portion cavity, and an ejector pin can be inserted into the ejector pin hole.

[0012] In a preferred embodiment of the present invention, the male clamp piece cavity and the female clamp piece cavity further include a finger ring cavity, a lifting portion cavity is arranged in the finger ring cavity, the lifting portion cavity is a "cross-shaped" cavity, a pinhole is arranged below the lifting portion cavity, and the pinhole is arranged below the intersection of the "cross-shaped" cavity.

[0013] In a preferred embodiment of the present invention, mold locating grooves are further provided at the four corners of the bottom mold.

[0014] In a preferred embodiment of the present invention, it further includes an upper mold fixing plate, a bottom mold fixing plate, a guide column, and an ejector fixing plate, wherein the upper end of the guide column is fixed to the upper mold fixing plate, the lower end of the guide column is fixed to the bottom mold fixing plate, the upper mold is fixed below the upper mold fixing plate, an ejector fixing plate is arranged above the bottom mold fixing plate, and the ejector is arranged on the ejector fixing plate.

[0015] In a preferred embodiment of the present invention, the upper mold fixing plate is further provided with an injection port, the upper mold is provided with an injection channel, the injection channel runs through the upper mold, and the injection channel is respectively connected to the injection port and the molding cavity.

[0016] In a preferred embodiment of the present invention, oil injection channels are further provided in the upper mold and the bottom mold.

[0017] Beneficial effects of the present invention:

[0018] The medical forceps with hidden gill axes at the gills of the present invention change the existing gill assembly structure of the male forceps and the female forceps, two arc-shaped pressing pieces and a protruding gill axis are arranged at the gills of the female forceps, and a connecting piece and a gill axis hole are arranged at the gills of the male forceps. The connecting piece of the gills of the male forceps is inserted into the middle of the two arc-shaped pressing pieces of the gills of the female forceps, and the gill axis is inserted into the gill axis hole. The arc-shaped pressing piece is flattened by pressing, thereby changing the existing external pin connection structure, preventing water accumulation and rust at the pin connection during long-term use, and preventing the protruding pin from affecting the operation during the operation.

[0019] The powder injection mold for the medical forceps with hidden gill axis of the gills of the present invention manufactures the medical forceps with hidden gill axis of the gills through powder injection technology. Compared with the production method of pressing and punching connection in the traditional process, it reduces the technical requirements for processing personnel, reduces energy consumption, reduces costs, and greatly improves production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a structural schematic diagram of the medical forceps for gills with dark gill axis of the present invention;

[0021] Figure 2 It is a structural schematic diagram of a powder injection mold for a medical forceps with a dark gill axis of the gill portion of the present invention;

[0022] Figure 3 It is a structural schematic diagram of the bottom mold of the present invention;

[0023] Figure 4 It is a schematic structural diagram of the insert of the present invention.

[0024] Explanation of the numbers in the figure: 1. female pliers; 2. male pliers; 3. pliers head; 301. lip head teeth; 4. gill; 401. arc-shaped pressing piece; 402. gill axis; 403. connecting piece; 404. gill axis hole; 5. pliers arm; 501. finger ring; 502. locking teeth; 6. upper mold fixing plate; 7. upper mold; 8. bottom mold; 801. mold positioning groove; 9. molding cavity; 901. male pliers cavity; 902. female pliers cavity; 903. insert; 904. groove; 905. protrusion; 906. point-shaped cavity; 907. connecting cavity; 908. "cross-shaped" cavity; 909. ejector hole; 910. breaking part cavity; 10. ejector fixing plate; 11. bottom mold fixing plate; 12. guide column; 13. injection port; 14. injection flow channel. DETAILED DESCRIPTION

[0025] The present invention is further described below in conjunction with the accompanying drawings and specific embodiments so that those skilled in the art can better understand the present invention and implement it, but the embodiments are not intended to limit the present invention.

[0026] Reference Figure 1 As shown, an embodiment of a medical forceps with hidden gill axis of gills of the present invention comprises a female forceps piece 1 and a male forceps piece 2, wherein both the female forceps piece 1 and the male forceps piece 2 comprise a forceps head 3, a gill portion 4 and a forceps arm 5, the gill portion 4 of the female forceps piece 1 comprises two arc-shaped pressing pieces 401 respectively connected to the forceps head 3 and the forceps arm 5, wherein a raised gill axis 402 is arranged on the inner side of any one of the arc-shaped pressing pieces 401, the gill portion 4 of the male forceps piece 2 comprises a connecting piece 403 respectively connected to the forceps head 3 and the forceps arm 5, a gill axis hole 404 matching the gill axis 402 is opened on the connecting piece 403, and the male forceps piece 2 The connecting piece 403 of the gill 4 is inserted into the middle of the two arc-shaped pressing pieces 401 of the gill 4 of the female forceps 1, and the gill axis 402 is inserted into the gill axis hole 404. The female forceps 1 and the male forceps 2 have a certain toughness. The arc-shaped pressing piece 401 is flattened by pressing, and the gill axis 402 can be inserted into the gill axis hole 404, so that the female forceps 1 and the male forceps 2 are fixed and keep rotating smoothly, which changes the existing external pin connection structure, prevents water accumulation and rust at the pin connection during long-term use, and prevents the protruding pins from affecting the operation during the operation.

[0027] Specifically, the inner sides of the pliers heads 3 of the female pliers 1 and the male pliers 2 are both provided with lip teeth 301. The lip teeth 301 are provided to increase the friction of the pliers heads 3, making it more convenient to clamp objects during use.

[0028] Specifically, the ends of the pliers arms 5 of the female pliers blade 1 and the male pliers blade 2 are both provided with finger rings 501 and locking teeth 502 , which facilitate use.

[0029] Reference Figure 2 As shown, an embodiment of the powder injection mold for medical forceps with hidden gill axis of gills of the present invention comprises an upper mold fixing plate 6, an upper mold 7, a bottom mold 8, an ejector fixing plate 10, a bottom mold fixing plate 11, and a guide column 12, wherein the upper end of the guide column 12 is fixed to the upper mold fixing plate 6, and the lower end of the guide column 12 is fixed to the bottom mold fixing plate 11, the upper mold 7 is arranged below the upper mold fixing plate 6, the bottom mold 8 is arranged above the bottom mold fixing plate 11, an ejector fixing plate 10 is arranged above the bottom mold fixing plate 11, and an ejector is arranged on the ejector fixing plate 10, and the bottom mold fixing plate 11 is moved toward the upper mold fixing plate 6 along the guide column 12, so that the upper mold 7 and the bottom mold 8 are combined to form a molding cavity 9.

[0030] Specifically, an injection port 13 is provided on the upper mold fixing plate 6, and an injection channel 14 is provided in the upper mold 7. The injection channel 14 runs through the upper mold 7. The injection channel 14 is respectively connected to the injection port 13 and the molding cavity 9. Powder is injected from the injection port 13 and enters the molding cavity 9 along the injection channel 14.

[0031] Reference Figure 3-4 As shown, the molding cavity 9 includes a male clamp piece cavity 901 and a female clamp piece cavity 902, an insert 903 is provided on one side of the male clamp piece cavity 901, and the upper and lower surfaces of the insert 903 are arc-shaped, and the insert 903 divides the gill position of the male clamp piece cavity 901 into two upper and lower parts to form two arc-shaped pressing pieces 401, a groove 904 is provided on one side of the insert 903, and the groove 904 forms a gill axis 402, and a convex column 905 is provided at the gill position of the female clamp piece cavity 902, and the convex column 905 forms a gill axis hole 404.

[0032] Specifically, in order to facilitate the removal of the formed female clamp piece 1 and the male clamp piece 2, and to prevent the ejector pin from directly acting on the female clamp piece 1 and the male clamp piece 2 to prevent damage to the female clamp piece 1 and the male clamp piece 2, a plurality of lifting portion cavities are further provided in the forming cavity 9, and the lifting portion cavities form a lifting portion, and the lifting portion cavities are connected to the male clamp piece cavity 901 and the female clamp piece cavity 902 respectively, and the lifting portion cavity includes a plurality of dot-shaped cavities 906 arranged on the sides of the male clamp piece cavity 901 and the female clamp piece cavity 902 and a plurality of dot-shaped cavities 906 arranged on the sides of the male clamp piece cavity 901 and the female clamp piece cavity 902. 02, and an ejector hole 909 is provided below the lifting part cavity, into which an ejector can be inserted. After powder injection molding, the ejector is used to push on the lifting part to eject the lifting part and the female clamp piece 1 and the male clamp piece 2 together. After ejection, the lifting part is broken and separated from the female clamp piece 1 and the male clamp piece 2 to obtain separate female clamp piece 1 and male clamp piece 2. This can prevent the female clamp piece 1 and the male clamp piece 2 from breaking and deforming during the ejection process of the ejector. At the same time, there is no ejector mark on the surface of the female clamp piece 1 and the male clamp piece 2, making the injection molded blank more beautiful.

[0033] Specifically, since the male clamp piece cavity 901 and the female clamp piece cavity 902 both include a finger ring cavity, a lifting portion cavity may also be provided in the finger ring cavity. The lifting portion cavity in the finger ring cavity may be provided as a "cross-shaped" cavity 908, and a pinhole hole 909 is provided below the lifting portion cavity. The pinhole hole 909 is provided below the intersection of the "cross-shaped" cavity 908. Through the design of the "cross-shaped" cavity 908, the ejection force is evenly applied to the four directions of the finger ring cavity to prevent deformation of the finger ring during the ejection process.

[0034] Specifically, in order to facilitate the bending and separation of the female clamp piece 1, the male clamp piece 2 and the lifting part, a breaking part cavity 910 is provided at the connection between the lifting part cavity and the male clamp piece cavity 901 and the female clamp piece cavity 902. The breaking part cavity 910 is thinner than the male clamp piece cavity 901 and the female clamp piece cavity 902, which is convenient for breaking.

[0035] Specifically, in order to ensure the mold matching between the upper mold 7 and the bottom mold 8 and make the shape of the molding cavity 9 after mold matching more precise, mold positioning grooves 801 are provided at the four corners of the bottom mold 8, and mold positioning blocks are provided at the four corners of the upper mold 7.

[0036] Specifically, the upper mold 7 and the bottom mold 8 are also provided with oil injection channels. During the process of injecting powder, hot oil is injected into the oil injection channels to heat the mold.

[0037] The above-described embodiments are only preferred embodiments for fully illustrating the present invention, and the protection scope of the present invention is not limited thereto. Equivalent substitutions or changes made by those skilled in the art based on the present invention are within the protection scope of the present invention. The protection scope of the present invention shall be subject to the claims.

Claims

1. A medical forceps for gills with dark gill axis, comprising a male forceps blade and a female forceps blade, wherein the male forceps blade and the female forceps blade each comprise a forceps head, a gill portion and a forceps arm, characterized in that: The gill portion of the female forceps includes two arc-shaped pressing pieces respectively connected to the forceps head and the forceps arm, and a protruding gill axis is arranged on the inner side of any one of the arc-shaped pressing pieces. The gill portion of the male forceps includes connecting pieces respectively connected to the forceps head and the forceps arm, and a gill axis hole matching the gill axis is opened on the connecting piece. The connecting piece of the gill portion of the male forceps is inserted into the middle of the two arc-shaped pressing pieces of the gill portion of the female forceps, and the gill axis is inserted into the gill axis hole. The arc-shaped pressing pieces are flattened by pressing, and the male and female forceps are fixed and kept rotating smoothly.

2. The gill dark gill axis medical forceps according to claim 1, characterized in that: The inner sides of the pliers heads of the male pliers and the female pliers are both provided with lip head teeth.

3. The gill dark gill axis medical forceps according to claim 1, characterized in that: Finger rings and locking teeth are provided at the ends of the clamp arms of the male clamp piece and the female clamp piece.

4. A powder injection mold for medical forceps with dark gill axis, used for manufacturing the medical forceps with dark gill axis as claimed in any one of claims 1 to 3, characterized in that: It includes an upper mold and a bottom mold, and the upper mold and the bottom mold are combined to form a molding cavity, and the molding cavity includes a male clamp piece cavity and a female clamp piece cavity. An insert is provided on one side of the female clamp piece cavity, and the upper and lower surfaces of the insert are arc-shaped. The insert divides the gill position of the female clamp piece cavity into two upper and lower parts to form two arc-shaped pressing pieces. A groove is provided on one side of the insert, and the groove forms a gill axis. A convex column is provided at the gill position of the male clamp piece cavity, and the convex column forms a gill axis hole.

5. The powder injection mold for the gill dark gill axis medical forceps as claimed in claim 4, characterized in that: A plurality of lifting part cavities are also arranged in the molding cavity, and the lifting part cavities are respectively connected with the male clamp piece cavity and the female clamp piece cavity. The lifting part cavity includes a plurality of point cavities arranged on the sides of the male clamp piece cavity and the female clamp piece cavity and a connecting cavity arranged between the male clamp piece cavity and the female clamp piece cavity. A pinhole is arranged below the lifting part cavity, and a pinhole can be inserted into the pinhole.

6. The powder injection mold for the gill dark gill axis medical forceps as claimed in claim 4, characterized in that: The male clamp piece cavity and the female clamp piece cavity both include a finger ring cavity, a lifting part cavity is arranged in the finger ring cavity, the lifting part cavity is a "cross-shaped" cavity, a pinhole is arranged below the lifting part cavity, and the pinhole is arranged below the intersection of the "cross-shaped" cavity.

7. The powder injection mold for the gill dark gill axis medical forceps as claimed in claim 4, characterized in that: The four corners of the bottom mold are provided with mold positioning grooves.

8. The powder injection mold for the gill dark gill axis medical forceps as claimed in claim 4, characterized in that: It also includes an upper mold fixing plate, a bottom mold fixing plate, a guide column, and an ejector fixing plate. The upper end of the guide column is fixed to the upper mold fixing plate, the lower end of the guide column is fixed to the bottom mold fixing plate, the upper mold is fixed below the upper mold fixing plate, and an ejector fixing plate is arranged above the bottom mold fixing plate, and the ejector is arranged on the ejector fixing plate.

9. The powder injection mold for the medical forceps with dark gill axis of gills as claimed in claim 8, characterized in that: An injection port is provided on the upper mold fixing plate, and an injection channel is provided in the upper mold. The injection channel runs through the upper mold, and the injection channel is communicated with the injection port and the molding cavity respectively.

10. The powder injection mold for medical forceps with dark gill axis of gills as claimed in claim 4, characterized in that: Oil injection channels are also provided in the upper die and the bottom die.

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