CN106003599B - A mold for making paste board in skin stapler - Google Patents

Abstract

The invention belongs to the technical field of medical instrument processing, and particularly relates to a manufacturing mold of a pasting plate in a skin anastomat, which comprises a female mold, a male mold and a supporting template, wherein the female mold consists of a runner center hole, a runner, a cavity, a demolding rod, a core pulling mechanism and a mold fixing connecting piece, the center hole is positioned in the center position in the female mold and is communicated with the runner, and the runner is communicated with a pasting plate groove; the male die consists of a nozzle, a flow channel, a convex block, a convex groove, a guide rod A, a guide rod B and a die fixing connecting piece hole; when the female die and the male die are folded, a space formed by folding the cavity, the core-pulling mechanism, the groove, the bump and the convex groove is an entity space of the adhesive plate; the manufacturing die is high in manufacturing precision and reasonable in arrangement and layout, various runners are arranged, and the runners are symmetrically and equidistantly arranged on the die, so that slurry is uniformly distributed without dead angles; the core-pulling mechanism and the demoulding rod are arranged, so that the formed complex structure is separated, demoulding is facilitated, and the rapid and high-quality production of the pasting plate in the mould is ensured.

Description

A mold for making paste board in skin stapler

technical field

The invention belongs to the technical field of medical device processing, and in particular relates to a mold for making an adhesive plate in a skin stapler.

Background technique

Injection mold is a tool for producing plastic products; it is also a tool for giving plastic products a complete structure and precise dimensions; injection molding is a processing method used in mass production of certain parts with complex shapes; High pressure is injected into the mold cavity, and after cooling and solidification, a molded product is obtained.

The skin stapler is designed according to the performance of skin mechanical crawling and stress release. It achieves wound closure by stretching the skin. It is suitable for various wound closures with a diameter of less than 20cm. It includes two sticking boards and a stretching strip, two sticking The boards are placed opposite and connected by stretching strips; the stretching strips are pulled, and the two pasting boards gradually move closer to each other, and the wound is closed by continuous or intermittent unidirectional or multi-directional stretching of the skin, and the pasting boards are equipped with a release mechanism There are elliptical through-holes and horizontal through-holes on the pasting plate for the lock buckle. The processing and production requirements are fine, especially the internal space structure of the lock buckle is relatively complicated. The general traditional production method cannot meet its requirements. Therefore, a production method is invented. It is necessary to make molds for pasting boards with high precision, fast speed and high quality stability.

Contents of the invention

The present invention aims at the problems existing in the processing and production of the pasting board in the skin stapler, and provides a mold for making the pasting board in the skin stapler. The technical solution for solving the technical problems is:

A mold for making an adhesive plate in a skin stapler, comprising a die, a punch and a support template, the die is composed of a central hole of a flow channel, a flow channel, a cavity, a demoulding rod, a core-pulling mechanism and a solid mold connector The center hole is located in the center of the die, and communicates with the runner, and the runner communicates with the groove of the pasting plate; the punch is composed of a nozzle, a runner, a bump, a convex groove, a guide rod A and a guide The rod B and the hole of the solid mold connector; when the die and the punch are closed, the space formed by the cavity, the core-pulling mechanism, the groove, the bump and the convex groove is the solid space of the pasting board.

The core-pulling mechanism is composed of a side core-pulling mechanism A and a side core-pulling mechanism B.

The cavity is divided into an upper cavity and a lower cavity, the upper cavity is located on the side core-pulling mechanism A, and the lower cavity is located inside the middle mold at the end of the groove.

The side core-pulling mechanism A includes a guide hole A, a guide groove A and a guide block A, and the side core-pulling mechanism B includes a guide hole B, a guide groove B and a guide block B.

The physical space of the pasteboard is eight identical spaces.

The runner includes a sprue, a runner, and a gate. The sprue is cylindrical, half of which is distributed on the central axis of the die in a semi-cylindrical shape, and the other half is distributed on the central axis of the punch in a semi-cylindrical shape. When the concave mold and the convex mold are closed, a cylindrical channel is formed; the runners are distributed on the branches of the main channel, forming an elliptical columnar channel, half of which is distributed on the concave mold, showing a semi-elliptical cylindrical shape, and the other half is distributed on the On the punch, it is in the shape of a semi-elliptical column. When the die and the punch are closed, an elliptical column-shaped channel is formed; the gate is distributed between the runner and the groove on the die, and the runner and the groove are connected to form a flat cuboid. Channel; the sprue, runner, and gate diameters become smaller in turn.

The materials of the concave mold, the convex mold and the supporting template are all stainless steel materials, and the inner surfaces of the space formed by the concave mold and the convex mold are all smooth surfaces.

The manufacturing mold is made by numerical control wire cutting process and numerical control electric discharge machining process.

The support template includes four templates of the same size as the die and the punch, and three of the support templates are connected to the die by solid mold connectors, fixed at the rear of the injection molding machine, and can move back and forth along the slide rails at the rear of the injection molding machine; Another supporting template is connected with the punch by a solid mold connector and fixed at the front of the injection molding machine.

The demoulding rod is located on the die, perpendicular to the face of the die, distributed in the center of the flow channel, the crossroads and the two ends of the lock of the forming paste plate. When the mold is closed, the demoulding rod is drawn back into the die The mold plate is flush, and the ejection can be automatically controlled after the mold is opened.

The present invention has the following beneficial effects:

The present invention relates to a mold for making a pasting plate in a skin stapler. The mold has high manufacturing precision and is equipped with multiple channels with a reasonable layout. The distribution channels are arranged symmetrically and equidistantly on the mold so that the slurry is evenly distributed without dead ends; The core-pulling mechanism and the demoulding rod liberate the complex structure of the molding and facilitate the demoulding, which ensures the fast and high-quality production of the pasted board in the mold.

Description of drawings

Fig. 1 is a schematic view of the front structure of the die of the present invention.

Fig. 2 is a schematic view of the front structure of the punch of the present invention.

Fig. 3 is a sectional view along line A-A of Fig. 1 .

Fig. 4 is a B-B sectional view of Fig. 2 .

Fig. 5 is a schematic diagram of the clamping structure of the present invention.

Fig. 6 is a schematic diagram of the process flow of the present invention.

In the figure: 1. Die, 11. Center hole of runner, 12. Runner, 121. Main runner, 122. Runner, 123. Gate, 13. Cavity, 131. Perforated core rod, 132. Groove , 133. upper cavity, 134. lower cavity, 14. demoulding rod, 15. core-pulling mechanism, 151. side core-pulling mechanism A, 1511. guide hole A, 1512. guide groove A, 1513. guide block A, 1514. Guide rod A, 152. Side core-pulling mechanism B, 1521. Guide hole B, 1522. Guide groove B, 1523. Guide block B, 1524. Guide rod B, 16. Solid mold connector, 161. Solid mold connection Part hole, 2. punch, 21. nozzle, 22. bump, 23. convex groove, 3. support template, 4. hopper, 5. heating plate, 6. barrel, 7. screw, 8. transmission mechanism, 9. Control cabinet, 10. Slide rail.

detailed description

The technical solutions of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the present invention.

A kind of mold for making pasting plate in skin stapler, comprises concave mold 1, convex mold 2 and support template 3, described concave mold is composed of flow channel central hole 11, flow channel 12, cavity 13, demoulding rod 14, drawer The core mechanism 15 is composed of a solid mold connector 16, the central hole 11 is located in the center of the die 1, and communicates with the flow channel, and the flow channel 12 communicates with the paste plate groove 132; the punch 2 is formed by a nozzle 21 , flow channel 12, bump 22, convex groove 23, guide rod A1514, guide rod B1524 and solid mold connector hole 161; when the die 1 and punch 2 are closed, the cavity 13, core pulling mechanism 15, The space formed by the groove 132 , the protruding block 22 and the protruding groove 23 together is the physical space of the pasting board.

The core-pulling mechanism 15 is composed of a side core-pulling mechanism A151 and a side core-pulling mechanism B152.

The cavity 13 is divided into an upper cavity 133 and a lower cavity 134, the upper cavity 133 is located on the side core pulling mechanism A151, and the lower cavity 134 is located inside the middle mold at the end of the groove 132.

The side core-pulling mechanism A151 includes a guide hole A1511, a guide groove A1512, and a guide block A1513. The side core-pulling mechanism B152 includes a guide hole B1521, a guide groove B1522, and a guide block B1523. The guide block A1513 is fixed with a perforated core rod 131. The guide block A can drive the perforated mandrel to move along the guide groove A1512.

The physical space of the pasteboard is eight identical spaces.

The runner 12 includes a sprue 121, a runner 122, and a gate 123. The sprue 121 is cylindrical, half of which is distributed on the central axis of the die 1 in a semi-cylindrical shape, and the other half is distributed on the center axis of the punch 2. On the central axis, it is semi-cylindrical. When the die 1 and the punch 2 are closed together, a cylindrical channel is formed; the runners 122 are distributed on the branches of the main channel 121, which are elliptical columnar channels, half of which are distributed on the side of the die 1. On the top, it is in the shape of a semi-elliptic column, and the other half is distributed on the punch 2, which is in the shape of a semi-ellipse column. When the die 1 and the punch 2 are closed, an ellipse-shaped channel is formed; the gate 123 is distributed on the runner on the die 1 Between 122 and the groove 132, the runner 122 is connected with the groove 132, forming a flat cuboid channel; the diameters of the main runner 121, the runner 122, and the gate 123 become smaller in turn.

The concave mold 1, the convex mold 2 and the support template 3 are made of stainless steel, and the inner surface of the space formed by the concave mold 1 and the convex mold 2 is smooth.

The manufacturing mold is manufactured by numerical control wire cutting process and numerical control electric discharge machining process.

The support template 3 includes four templates with the same size as the die 1 and the punch 2, wherein three support templates are connected with the die 1 by a solid mold connector 16, fixed on the rear of the injection molding machine, and can be moved along the rear of the injection molding machine. The slide rail 10 moves back and forth; the other support template is connected with the punch 2 by a solid mold connector 16 and fixed on the front of the injection molding machine.

The demoulding rod 14 is located on the die 1, perpendicular to the panel of the die 1, distributed in the center of the flow channel, the crossroads and the two ends of the lock of the forming paste plate. The inside of the mold 1 is flush with the panel of the concave mold 1, and the ejection can be automatically controlled after the mold is opened.

The specific implementation is as follows:

A) Put translucent medical-grade granular PP polypropylene into the hopper 4 of the 160T injection molding machine, set the temperature of the heating plate 5 of the barrel 6 of the injection molding machine, and start the transmission when the temperature reaches the set temperature. The device 8 rotates the screw, brings the raw material into the barrel 6, heats it to 220±10°C, and melts it into a slurry under high temperature, high pressure and shearing action of the screw.

B) Install die 1, punch 2 and support template 3 on the injection molding machine, press the start button on the control cabinet of the injection molding machine to close die 1 and punch 2 to form a cavity in the shape of a sticky board.

C) Under the control of the metering control system of the control cabinet 9, a certain amount of slurry is sprayed into the nozzle of the mold, quickly flows into the runner through the runner expansion cavity 211, and enters the pasting plate through the main runner 121, the runner 122 and the gate 123 In the cavity, fill the cavity with high pressure, wait for 10±5 seconds, cool down to 75±5°C, the system automatically controls the template where the die 1 is located to move backward along the slide rail 10, open the die 1 and punch 2, and While opening the mold, the side core-pulling mechanism A151 of the die 1 is opened up and down along the guide groove A1512 by the guide rod A1514 on the punch 2, and at the same time, the side core-pulling mechanism B152 of the die 1 is moved along the guide groove B1522 by the guide rod B1524 Open left and right so that the core body of the upper cavity 133 and the left and right perforated core rods 131 are separated from the formed pasting board, press the button of the stripper lever, the stripping rod is ejected, and the pasting board is pushed out of the die 1, received, and removed. The road part is the finished product;

D) Press the mold clamping button, repeat step C, and cycle production.

The above is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed in the present invention can easily think of changes or Replacement should be covered within the protection scope of the present invention.

Claims (6)

1. in a kind of skin stapler pasting boards making mould, including cavity plate（1）, punch-pin（2）And support shuttering（3）, it is special Levy and be, the cavity plate is by runner centre bore（11）, runner（12）, cavity（13）, knockout pin（14）, core-pulling mechanism (15）With it is solid Mould connector (16）Composition, the centre bore（11）Positioned at cavity plate（1）Inner hub location, is connected with runner, runner (12) With pasting boards groove（132）It is connected；The punch-pin (2）By nozzle（21）, runner（12）, projection（22）, tongue（23）, be oriented to Bar A（1514）With guide post B（1524）With solid model connector aperture（161）Composition；The cavity plate（1）And punch-pin（2）It is empty when closing up Chamber（13）, core-pulling mechanism（15）, groove（132）, projection（22）And tongue（23）Close up the entity that the space to be formed is pasting boards Space；The core-pulling mechanism（15）By side core-pulling mechanism A（151）With side core-pulling mechanism B（152）Composition；The cavity（13）Point It is upper plenum（133）With lower cavity（134）, the upper plenum（133）Positioned at side core-pulling mechanism A (151）On, lower cavity（134） Positioned at groove（132）Inside the intermediate mold of end；The side core-pulling mechanism A（151）Including pilot hole A（1511）, guide groove A （1512）With guide block A（1513）, side core-pulling mechanism B（152）Including pilot hole B（1521）, guide groove B（1522）With guide block B （1523）, the guide block A（1513）On be fixedly installed perforation core bar（131）, guide block A can drive perforation core bar along guide groove A （1512）It is mobile；The runner（12）Including sprue（121）, runner（122）, cast gate（123）, sprue（121）It is circle Cylindricality, wherein half are distributed in cavity plate（1）Center axle track on, in semicircle column type, second half is distributed in punch-pin（2）Central shaft On road, in semicircle column type, cavity plate（1）, punch-pin（2）Cylindrical channel is formed when closing up；Runner（122）It is distributed in sprue （121）Branch on, the column-like paths of ovalize, wherein half are distributed in cavity plate（1）It is upper, it is another in semiellipse column type Partly it is distributed in punch-pin（2）On, in semiellipse column type, cavity plate（1）, punch-pin（2）Elliptic cylinder passage is formed when closing up；Cast gate （123）It is distributed in cavity plate（1）On runner（122）With groove（132）Between, by runner（122）With groove（132）Even It is logical, in flat rectangular body passage；Sprue（121）, runner（122）, cast gate（123）Bore diminishes successively.

2. in a kind of skin stapler according to claim 1 pasting boards making mould, it is characterised in that：The stickup The entity space of plate is eight identical spaces.

3. in a kind of skin stapler according to claim 1 pasting boards making mould, it is characterised in that：The cavity plate （1）, punch-pin（2）And support shuttering（3）Material is stainless steel material, cavity plate（1）, punch-pin（2）Close up table in the space to be formed Face is smooth surface.

4. in a kind of skin stapler according to claim 1 pasting boards making mould, it is characterised in that：The making Mould is made using Numerical Control Wire Cutting technique and numerical control electrical discharge machining process.

5. in a kind of skin stapler according to claim 1 pasting boards making mould, it is characterised in that：Support shuttering （3）Including four pieces and cavity plate（1）, punch-pin（2）Size identical template, wherein three pieces of support shutterings and cavity plate（1）Connected by solid model Fitting（16）Connection, is fixed on injection machine rear portion, can be along the slide rail at injection machine rear portion（10）It is movable；Another piece of support shuttering With punch-pin（2）By solid model connector（16）Connection, is fixed on injection machine anterior.

6. in a kind of skin stapler according to claim 1 pasting boards making mould, it is characterised in that：The demoulding Bar（14）Positioned at cavity plate (1）On, perpendicular to cavity plate（1）Panel, is distributed in runner central part, cross road junction and shaping pasting boards Lock two-end part, during matched moulds, knockout pin（14）Draw back cavity plate（1）Interior and cavity plate（1）Panel is flushed, and can be automatically controlled after die sinking It is released.