CN212822684U - Buccal tube injection molding die - Google Patents

Abstract

The utility model relates to a buccal surface pipe production facility's field particularly, relates to a buccal surface pipe injection moulding mould, include quiet mould and cooperate in the moving mould of quiet mould. The static mould comprises a static template and a static mould insert. The static mold insert is detachably arranged on the static mold plate. The static mold insert is provided with a static cavity. The moving die comprises a moving die plate and a pin inserting assembly. The movable die plate is matched with the static die cavity and is provided with a movable die cavity. The insert pin assembly comprises an insert pin and a sliding block. The sliding block is detachably arranged on the movable template and can slide along the movable template. The inlay needle detachable sets up in the sliding block. The side wall of the movable cavity is provided with a telescopic groove in cooperation with the insert pin. When the cheek-surface pipe static mould insert is used, the static mould insert with the corresponding type of the cheek-surface pipe is selected and is arranged on the static mould plate. Simultaneously, select the insert needle that the buccal surface pipe corresponds the model and will inlay the needle and install in the sliding block, and then make the mould correspond to the model of the buccal surface pipe of current production. The replacement process is simplified, and the efficiency is improved.

Description

Buccal tube injection molding die

Technical Field

The utility model relates to a buccal surface pipe production facility's field particularly, relates to a buccal surface pipe injection moulding mould.

Background

Metal Injection Molding (MIM) is a Molding method in which a plasticized mixture of Metal powder and its binder is injected into a mold. The preparation method comprises the steps of mixing the selected powder with a binder, granulating the mixture, and then performing injection molding to obtain the required shape. The polymer imparts its viscous flow characteristics to the mix, which aids in the uniformity of forming, cavity filling and powder packing. After forming, the binder is removed, and the degreased blank is sintered. Some sintered products may be subjected to further densification, heat treatment or machining. The sintered product not only has the same complex shape and high precision as the product obtained by the plastic injection molding method, but also has the physical, chemical and mechanical properties close to those of the forged piece. The process technology is suitable for mass production of small-sized, precise and metal parts with complex three-dimensional shapes and special performance requirements.

Buccal tube products are important products for orthodontic correction. In the production of buccal tubes, metal injection molding is also often used for production. The buccal tube production mold in the prior art can only produce buccal tubes of one specification. Because the specification and the model of the buccal tube are more, the mold is frequently replaced in a production workshop, a large amount of time is wasted, and the production efficiency is low.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a buccal surface pipe injection moulding mould, its change mould that can be convenient, and then the buccal surface pipe of the various models of quick production.

The embodiment of the utility model is realized like this:

a buccal tube injection molding mold comprising a stationary mold and a moving mold fitted to the stationary mold; the static mould comprises a static mould plate and a static mould panel; the static mould paneling is detachably arranged on the static mould board; the static mould paneling is provided with a static mould cavity;

the movable mould comprises a movable mould plate and an insert pin assembly; the movable die plate is provided with a movable die cavity matched with the static die cavity, so that the static die cavity and the movable die cavity enclose a product die cavity after the static die and the movable die are closed;

the insert pin assembly comprises an insert pin and a sliding block; the sliding block is detachably arranged on the movable template and can slide along the movable template; the insert pin is detachably arranged on the sliding block; the lateral wall of the movable cavity is matched with the insert pin to be provided with a telescopic groove, so that the insert pin can follow the sliding block to slide to the interior of the movable cavity along the telescopic groove.

Further, the static mould panel is provided with 4 static mould cavities; the movable mould plate is matched with the 4 static cavities to be provided with 4 movable cavities;

the number of the sliding blocks is two; each sliding block is provided with two insert pins; each movable cavity is provided with the telescopic groove in a way of being matched with one insert pin.

Further, the static mould panel is provided with an injection hole and an injection runner communicated with the injection hole; the movable mould plate is provided with a branch runner communicated with the movable mould cavity; the branch flow channel is matched with the injection flow channel, so that the injection flow channel is communicated with the branch flow channel after the static mold and the movable mold are closed.

Further, the injection flow channel is in an S shape.

Furthermore, the movable die plate is provided with a thimble hole at the bottom of each movable cavity and the bottom of each branch runner; and the ejector pins are arranged in the ejector pin holes in a telescopic manner, so that the ejector pins can eject the materials in the movable mold cavity and the branch flow channel.

Further, the movable mould also comprises an ejector plate; the ejector pin plate is arranged on one side of the movable mould plate, which is far away from the movable mould cavity; one ends of the ejector pins, which are far away from the movable cavity, are connected to the ejector plate, so that the ejector plate can push the ejector pins to stretch along the ejector pin holes; and a compression spring is arranged between the ejector plate and the movable template, so that the compression spring can push the ejector plate to move towards one side far away from the movable template.

Further, the static template is provided with a wedge-shaped block; the sliding block is matched with the wedge-shaped block and is arranged in a wedge shape, so that when the static mold and the movable mold are closed, the wedge-shaped block pushes the sliding block to slide towards the movable cavity;

and an elastic piece is further arranged between the sliding block and the movable template, so that when the static mold is separated from the movable mold, the elastic piece pushes the sliding block to be far away from the movable cavity to slide.

Furthermore, the wedge-shaped block is also provided with a guide rod; the sliding block is matched with the guide rod to be provided with a guide hole, so that when the static mold and the movable mold are closed, the guide rod extends into the guide hole.

Further, the device also comprises a locking block; the static template and the movable template are matched with the locking block to be provided with locking screw holes, so that after the static mold and the movable mold are closed, the locking block locks the static mold and the movable mold through screws.

The utility model has the advantages that:

when the cheek pipe type panel installation device is used, the static mould panel with the corresponding type of the cheek pipe is selected and installed on the static template. Simultaneously, select the insert needle of the corresponding model of buccal tube and will inlay the needle and install in the sliding block. The sliding block is installed in the movable mould board. After the static mould and the movable mould are closed, the static cavity of the static mould paneling and the movable cavity of the movable mould board are enclosed to form a product cavity corresponding to the buccal tube. Meanwhile, the insert pin extends into a product cavity and has the function of forming the tooth wire mounting hole required by the product in the product injection molding process when the mold is in a mold closing state.

The buccal tube injection molding mold can conveniently replace a stationary mold panel and an insert pin, thereby enabling the mold to correspond to the model of the buccal tube currently produced. The mold structure is complicated and the replacement is troublesome. The buccal tube injection molding die does not need to be replaced by the whole die in the replacement process, so that the replacement process is simplified, and the efficiency is improved.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

Fig. 1 is an isometric view of a stationary mold of a buccal tube injection molding mold according to an embodiment of the present invention;

fig. 2 is a front view of a stationary mold according to an embodiment of the present invention;

fig. 3 is a front view of a static mould panel according to an embodiment of the invention;

fig. 4 is an isometric view of a moving mold according to an embodiment of the present invention;

fig. 5 is a front view of the moving mold according to the embodiment of the present invention;

FIG. 6 is an enlarged view taken at a in FIG. 5;

fig. 7 is a schematic view of a side surface of a moving mold according to an embodiment of the present invention.

Icon:

1-static mould, 11-static mould plate, 111-wedge block, 112-guide rod, 113-guide hole, 114-wear-resistant block, 12-static mould panel, 121-static mould cavity, 122-injection hole, 123-injection runner, 2-moving mould, 21-moving mould plate, 211-moving mould cavity, 212-telescopic groove, 213-branch runner, 214-thimble hole, 215-thimble, 216-guide rod, 217-stop block, 22-thimble assembly, 221-thimble, 222-slide block, 223-guide hole, 23-thimble plate, 231-compression spring, 24-elastic piece and 3-locking block.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate the position or positional relationship based on the position or positional relationship shown in the drawings, or the position or positional relationship which is usually placed when the product of the present invention is used, and are only for convenience of description and simplification of the description, but do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

Example (b):

referring to fig. 1 to 7, the present embodiment provides a buccal tube injection molding mold, which includes a stationary mold 1 and a movable mold 2 fitted to the stationary mold 1. The stationary mold 1 includes a stationary mold plate 11 and a stationary mold panel 12. The static mold panels 12 are detachably provided to the static mold plates 11. The static template 11 is provided with a containing groove in cooperation with the static mould paneling 12, and the size of the static mould paneling 12 is slightly smaller than the size of the containing groove, so that the static mould paneling 12 can be just placed into the containing groove. After the static mould panel 12 is placed in the containing groove, the surface of the static mould panel 12 is flush with the surface of the static mould 11. Meanwhile, the static mould paneling 12 can be well fixed on the static mould plate 11 through the countersunk head screw. The surface of the static mould panel 12 far away from the containing groove is provided with a static mould cavity 121. The static cavity 121 is completely matched with the shape of the buccal tube. The static mould panel 12 is also provided with an injection hole 122. One end of the injection hole 122 is connected to one side of the static mould panel 12 away from the receiving groove, and the other end passes through the static mould plate 11 and extends to the other side of the static mould panel 12. The surface of the static mold panel 12 away from the receiving groove is further provided with an injection runner 123 connected to the injection hole 122.

The moving die 2 includes a moving die plate 21 and a pin 221 assembly 22. The movable die plate 21 is provided with a movable die cavity 211 matched with the movable die cavity 121, so that after the stationary die 1 and the movable die 2 are closed, the stationary die cavity 121 and the movable die cavity 211 enclose a product die cavity. After the static mold 1 and the movable mold 2 are closed, the plate surface of the movable mold plate 21 is attached to the plate surface of the static mold paneling 12 and the plate surface of the static mold plate 11, and one side of the injection runner 123 close to the movable mold plate 21, namely the plate surface of the passive mold plate 21, is closed. The movable die plate 21 is provided with a branch flow passage 213 communicating with the movable cavity 211. The branch runner 213 is provided in cooperation with the injection runner 123, so that the injection runner 123 communicates with the branch runner 213 after the stationary mold 1 and the movable mold 2 are closed. This allows the metal powder injected through the injection hole 122 to flow into the product cavity through the injection hole 122, the injection runner 123, and the branch runner 213 after the stationary mold 1 and the movable mold 2 are closed, thereby completing the injection.

The insert 221 assembly 22 includes an insert 221 and a slider 222. The slider 222 is detachably provided to the movable platen 21 and can slide along the movable platen 21. One side of the movable die plate 21 that is attached to the stationary die plate 11 is provided with a slide groove, and the slide block 222 is provided in the slide groove and can slide along the slide groove. The sliding slot may be a dovetail slot, and the sliding block 222 is disposed to fit the dovetail slot such that the sliding block 222 slides along and is constrained by the sliding slot. One end of the sliding groove is communicated with the side edge of the movable die plate 21, so that the sliding block 222 can be conveniently taken out of or inserted into the sliding groove. The movable die plate 21 is also provided with a stopper 217. The stopper 217 is located at the end of the slide groove and is attached to the movable die plate 21 by screws. The stopper 217 can block the slide block 222 from being separated from the slide groove when fixed to the movable die plate 21. When the stopper 217 is removed, the sliding block 222 is conveniently taken out of the sliding groove.

The insert pin 221 is detachably provided to the slider 222. The insert pin 221 may be connected to the slider 222 by a screw. The side wall of the movable mold cavity 211 is provided with a telescopic groove 212 in cooperation with the insert pin 221 so that the insert pin 221 can slide along the telescopic groove 212 to the inside of the movable mold cavity 211 following the slide block 222.

When in use, the static mould panel 12 with the corresponding model of the buccal surface pipe is selected and the static mould panel 12 is arranged on the static mould plate 11. Meanwhile, the insert pin 221 of the buccal tube corresponding to the model is selected and the insert pin 221 is mounted on the slider 222. The slide block 222 may be attached to the slide groove of the movable die plate 21. After the static mold 1 and the movable mold 2 are closed, the static cavity 121 of the static mold paneling 12 and the movable cavity 211 of the movable mold plate 21 are enclosed to form a product cavity corresponding to the buccal tube. Meanwhile, the insert pin 221 extends into the product cavity, and has an effect of forming a shape of a dental floss mounting hole required by a product in an injection molding process of the product when the mold is in a mold closing state.

Metal powder is injected through the injection holes 122 and caused to fill the product cavities. When demoulding, the movable mould plate 21 and the static mould plate 11 are separated. Meanwhile, the sliding block 222 slides along the sliding groove, so that the insert pin 221 slides along the telescopic groove 212 to be separated from the inside of the product cavity. At this time, the molded product can be easily taken out.

The mold structure is complicated and the replacement is troublesome. Such a buccal tube injection molding mold enables easy replacement of the stationary mold panel 12 and the insert pin 221, thereby allowing the mold to correspond to the model of the buccal tube currently produced. The buccal tube injection molding die does not need to be replaced by the whole die in the replacement process, so that the replacement process is simplified, and the efficiency is improved.

In order to ensure that the static mold 1 and the moving mold 2 can move relatively well, guide holes 113 are formed at four corners of the static mold plate 11, and guide rods 216 are formed at four corners of the moving mold plate 21. The guide rods 216 slide along the guide holes 113 during mold closing and mold releasing. The static template 11 is provided with a positioning groove, and the movable template 21 is also provided with a positioning bulge corresponding to the positioning groove. The direction of die assembly is conveniently distinguished.

In this embodiment, the stationary mold panel 12 is provided with 4 stationary cavities 121. The movable die plate 21 is provided with 4 movable die cavities 211 matching with the 4 static die cavities 121. The slider 222 is provided with two. Each slider 222 is provided with two pins 221. Each movable cavity 211 is provided with a telescopic slot 212 corresponding to one insert pin 221. This makes it possible to produce four buccal tubes at a time, improving the production efficiency. The injection flow path 123 has an "S" shape and the injection flow path 123 is disposed along the static cavities 121 such that the injection flow path 123 passes by each of the static cavities 121.

In this embodiment, the moving mold 2 further includes a thimble 215 plate and a plurality of thimbles 215. The movable die plate 21 is provided with a thimble 215 at the bottom of each movable cavity 211 and at the bottom of the branch runner 213. The ejector pins 215 are telescopically arranged in the holes 214 of the ejector pins 215, so that the ejector pins 215 can eject the materials in the movable mold cavity 211 and the branch flow channel 213. The ejector pin 215 is disposed on a side of the movable mold plate 21 away from the movable mold cavity 211. The ends of the pins 215 far away from the movable cavity 211 are connected to the pins 215, so that the pins 215 can push the pins 215 to extend and retract along the holes 214 of the pins 215. A compression spring 231 is provided between the thimble 215 plate and the movable die plate 21, so that the compression spring 231 can push the thimble 215 plate to move away from the movable die plate 21.

During demolding, after the insert pins 221 exit the movable mold cavity 211, the ejector pins 215 are pushed by pushing the ejector pin 215 plate, so that the products in the movable mold cavity 211 and the branch flow channel 213 are pushed out. During the pushing of the pin 215, the pin 215 presses the compression spring 231. After releasing the needle 215, the spring force of the compression spring 231 retracts the needle 215, so that the needle 215 exits the movable mold cavity 211 and the branch flow channel 213.

In this embodiment, the stationary platen 11 is provided with a wedge block 111. The sliding block 222 is arranged in a wedge shape in cooperation with the wedge block 111, so that when the static mold 1 and the movable mold 2 are closed, the wedge block 111 pushes the sliding block 222 to slide towards the movable cavity 211.

An elastic element 24 is further arranged between the sliding block 222 and the movable die plate 21, so that when the static die 1 is separated from the movable die 2, the elastic element 24 pushes the sliding block 222 to slide away from the movable die cavity 211. The elastic member 24 may select the compression spring 231. This allows the insert pins 221 to automatically enter the product cavities during the process of clamping the stationary mold 1 and the movable mold 2. In the demolding process of the static mold 1 and the movable mold 2, the insert pin 221 automatically exits from the product cavity. In order to avoid the wedge block 111 from being worn too fast, the part of the wedge block 111 contacting the sliding block 222 is provided with a wear-resistant block 114.

In this embodiment, the wedge block 111 is further provided with a guide rod 112. The slide block 222 is provided with a guide hole 223 in cooperation with the guide rod 112 so that the guide rod 112 extends into the guide hole 223 when the stationary mold 1 and the movable mold 2 are closed. This allows the guide rod 112 to slide along the guide hole 223, ensuring stability of the engagement of the wedge-shaped block 111 with the slide block 222.

In this embodiment, the locking block 3 is further included. The static template 11 and the movable template 21 are matched with the locking block 3 to be provided with locking screw holes, so that after the static mold 1 and the movable mold 2 are assembled, the locking block 3 locks the static mold 1 and the movable mold 2 through screws. In the transportation process, the locking of the locking block 3 can effectively avoid the damage caused by the mutual collision of the static mould 1 and the movable mould 2. This also allows the cavity portions of the stationary mold 1 and the movable mold 2 to be well protected.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (9)

1. A buccal tube injection molding die, characterized by: comprises a static mould (1) and a movable mould (2) matched with the static mould (1); the static mould (1) comprises a static mould plate (11) and a static mould panel (12); the static mould panel (12) is detachably arranged on the static mould plate (11); the static mould panel (12) is provided with a static mould cavity (121);

the movable mould (2) comprises a movable mould plate (21) and an insert pin (221) assembly (22); the movable die plate (21) is provided with a movable die cavity (211) in cooperation with the static die cavity (121), so that after the static die (1) and the movable die (2) are closed, the static die cavity (121) and the movable die cavity (211) enclose a product die cavity;

the insert pin (221) assembly (22) comprises an insert pin (221) and a sliding block (222); the sliding block (222) is detachably arranged on the movable template (21) and can slide along the movable template (21); the insert pin (221) is detachably arranged on the sliding block (222); the side wall of the movable cavity (211) is provided with a telescopic groove (212) in cooperation with the insert pin (221), so that the insert pin (221) can slide to the interior of the movable cavity (211) along the telescopic groove (212) along with the sliding block (222).

2. The buccal tube injection molding mold as set forth in claim 1, wherein: the static mould panel (12) is provided with 4 static mould cavities (121); the movable die plate (21) is matched with the 4 static die cavities (121) to be provided with 4 movable die cavities (211);

two sliding blocks (222) are arranged; each sliding block (222) is provided with two insert pins (221); each movable cavity (211) is provided with the telescopic groove (212) by matching with one insert pin (221).

3. The buccal tube injection molding mold as set forth in claim 1, wherein: the static mould panel (12) is provided with an injection hole (122) and an injection runner (123) communicated with the injection hole (122); the movable mould plate (21) is provided with a branch flow channel (213) communicated with the movable mould cavity (211); the branch runner (213) is matched with the injection runner (123) to be arranged, so that the injection runner (123) is communicated with the branch runner (213) after the static mold (1) and the movable mold (2) are closed.

4. The buccal tube injection molding mold as set forth in claim 3, wherein: the injection flow passage (123) is S-shaped.

5. The buccal tube injection molding mold as set forth in claim 3, wherein: the movable die plate (21) is provided with a thimble (215) hole (214) at the bottom of each movable cavity (211) and the bottom of the branch runner (213); the ejector pins (215) are arranged in the holes (214) of the ejector pins (215) in a telescopic mode, so that the ejector pins (215) can eject materials in the movable die cavities (211) and the branch flow channels (213).

6. The buccal tube injection molding mold as set forth in claim 5, wherein: the moving die (2) further comprises a thimble (215) plate; the ejector pin (215) plate is arranged on one side, away from the movable cavity (211), of the movable mould plate (21); one ends of the ejector pins (215) far away from the movable cavity (211) are connected to the ejector pin (215) plate, so that the ejector pin (215) plate can push the ejector pins (215) to extend and retract along holes (214) of the ejector pins (215); and a compression spring (231) is arranged between the thimble (215) plate and the movable mould plate (21), so that the compression spring (231) can push the thimble (215) plate to move towards the side far away from the movable mould plate (21).

7. The buccal tube injection molding mold as set forth in claim 1, wherein: the static template (11) is provided with a wedge-shaped block (111); the sliding block (222) is matched with the wedge-shaped block (111) and is arranged in a wedge shape, so that when the static mold (1) and the movable mold (2) are closed, the wedge-shaped block (111) pushes the sliding block (222) to slide towards the movable cavity (211);

an elastic piece (24) is further arranged between the sliding block (222) and the movable die plate (21), so that when the static die (1) is separated from the movable die (2), the elastic piece (24) pushes the sliding block (222) to slide away from the movable die cavity (211).

8. The buccal tube injection molding mold as set forth in claim 7, wherein: the wedge-shaped block (111) is also provided with a guide rod (112); the sliding block (222) is provided with a guide hole (223) in cooperation with the guide rod (112), so that when the static mold (1) and the movable mold (2) are closed, the guide rod (112) extends into the guide hole (223).

9. The buccal tube injection molding mold as set forth in claim 1, wherein: the device also comprises a locking block (3); the static template (11) and the movable template (21) are matched with the locking block (3) to be provided with locking screw holes, so that after the static mold (1) and the movable mold (2) are closed, the locking block (3) is locked by screws on the static mold (1) and the movable mold (2).

Images