CN214820369U

CN214820369U - Syringe

Info

Publication number: CN214820369U
Application number: CN202121689286.0U
Authority: CN
Inventors: 何成东
Original assignee: Dongguan Dongxin Electronic Technology Co ltd
Current assignee: Dongguan Dongxin Electronic Technology Co ltd
Priority date: 2021-07-23
Filing date: 2021-07-23
Publication date: 2021-11-23
Anticipated expiration: 2031-07-23

Abstract

The utility model relates to a semiconductor plastic envelope mould equipment field provides a syringe, and it includes: a charging barrel; the charging barrel is used for storing materials; an injection head; the injection molding head is movably connected with the charging barrel and is used for extruding materials in the charging barrel; a shaft lever; the axostylus axostyle is connected with the head of moulding plastics, and the axostylus axostyle is used for driving the head of moulding plastics and slides in the feed cylinder. The utility model discloses can improve the degree of consistency when the product is injected, increase material density lets the plastic envelope effect better to stand wear and tear, the precision is high, long service life.

Description

Syringe

Technical Field

The utility model relates to a semiconductor plastic envelope mould equipment field particularly, relates to a syringe.

Background

Along with the continuous forward progress and development of society, along with the popularization of electronic products, the electronic products are more and more. The dispensing process is one of the essential processes for processing electronic products. The function of the glue dispensing process is mainly to connect and fix a plurality of electronic components and circuit boards or chips together.

The injection molding head is a device which is matched with the charging barrel to pressurize and press the plastic package material to enter the cavity through the runner gate to form a product when the semiconductor plastic package mold is used for injection molding. The side surface of the existing injection molding head is of a full-circle surface structure, and for matching precision, when the length of the injection molding head is increased, the matching surface of the side surface and the inner wall of the charging barrel is large, so that resistance or interference is increased, normal use is influenced, and the service life is shortened; when the first length of moulding plastics subtracts the short-term, the side is little with feed cylinder inner wall fitting surface, can't guarantee the precision of cooperation direction, influences normal use, still can reduce the life of the head of moulding plastics.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a syringe, its degree of consistency when can improving the product and inject, increase material density lets the plastic envelope effect better to stand wear and tear, the precision is high, long service life.

The embodiment of the utility model is realized like this:

a syringe, comprising:

a charging barrel; the charging barrel is used for storing materials;

an injection head; the injection molding head is movably connected with the charging barrel and is used for extruding materials in the charging barrel;

a shaft lever; the axostylus axostyle is connected with the head of moulding plastics, and the axostylus axostyle is used for driving the head of moulding plastics and slides in the feed cylinder.

In some embodiments of the present invention, the surface of the charging barrel is provided with a fixing block, and the fixing block is used for installing and fixing the charging barrel.

The utility model discloses an in some embodiments, the axostylus axostyle includes mobile jib and auxiliary rod, mobile jib and feed cylinder adaptation, auxiliary rod and the first adaptation of moulding plastics, the mobile jib is provided with the Glare circle with the contact department of the first of moulding plastics.

In some embodiments of the present invention, the auxiliary rod is connected to the injection head by a screw.

In some embodiments of the present invention, an annular groove is provided along the axial direction of the shaft rod, and the annular groove is used for accommodating the remnant on the inner wall of the charging barrel.

In some embodiments of the present invention, a plurality of annular grooves are circumferentially provided at intervals on the surface of the shaft rod in the axial direction, and the annular grooves are used for accommodating the residue on the inner wall of the charging barrel.

In some embodiments of the utility model, the one end of the head of moulding plastics towards the feed cylinder matches with the shape of feed cylinder, and the other end is provided with a plurality of arc transition portions along its circumference interval.

The utility model discloses an in some embodiments, still be equipped with spacing subassembly on the axostylus axostyle, spacing subassembly is used for restricting the free distance of axostylus axostyle.

In some embodiments of the present invention, the stop assembly may be an annular plate.

In some embodiments of the present invention, the limiting component may be two bar-shaped rods, and the two bar-shaped rods are symmetrical about the central axis of the shaft rod.

The embodiment of the utility model provides an at least, have following advantage or beneficial effect:

the utility model discloses in to mould plastics the head and set up to movable, the head of moulding plastics can slide from top to bottom in the feed cylinder, mould plastics when the head is pulled down to feed cylinder bottom position (the head of moulding plastics still is in the feed cylinder), the inside top of feed cylinder is in the cavity state, the inside cavity part of feed cylinder is exactly the storage space of solid sizing material this moment, consequently mould plastics the inside cavity size of overhead feed cylinder and can decide how much solid sizing material can load, the storage space of letting solid sizing material can change according to actual conditions, and the solid sizing material of storing just can satisfy the point of many times and glue the operation.

In addition, the injection molding head is arranged to be in a column shape with the same diameter as the charging barrel, so that the contact area between the rubber material and the equipment needing to be subjected to glue dispensing is enlarged, the operation of large-area glue dispensing is facilitated, the top of the injection molding head is a flat plane when the injection molding head is in the column shape, the rubber material can be more uniformly coated on the equipment needing to be subjected to glue dispensing when the glue dispensing operation is carried out, and the glue dispensing effect is good. When the sizing material is required to be injected into the equipment, the sizing material is injected into the equipment at one time without any point, so that the injection density of the sizing material is uniform, and the condition that the sizing material is not fully injected into gaps in the equipment is almost avoided.

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 a schematic structural diagram of a syringe provided in an embodiment of the present invention;

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

fig. 3 is a cross-sectional view taken along line a-a of fig. 2 according to an embodiment of the present invention;

fig. 4 is a schematic structural view of a limiting assembly in an embodiment of the present invention;

fig. 5 is a schematic structural view of an injection molding head according to an embodiment of the present invention.

Icon: 1-a charging barrel; 11-fixing block; 2-an injection molding head; 3-shaft lever; 31-an annular groove; 32-Glare circle; 4-a limiting component.

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 embodiments of the present invention, it should be noted that, if 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, the description is only for convenience of description of the present invention and simplification, but the indication or suggestion that the device or element to be referred must have a specific position, be constructed and operated in a specific position, and therefore, the present invention should not be construed as being limited thereto.

Furthermore, the terms "horizontal", "vertical", "overhang" and the like do not require that the components be absolutely horizontal or overhang, but may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.

In the description of the embodiments of the present invention, it should be further noted that unless explicitly stated or limited otherwise, the terms "disposed," "mounted," "connected," and "connected" should be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

Examples

Referring to fig. 1, fig. 1 is a schematic structural diagram of an injector according to an embodiment of the present invention. The present embodiments provide a syringe, comprising: the charging barrel 1 is used for storing materials; the injection molding head 2 is movably connected with the charging barrel 1, and the injection molding head 2 is used for extruding the material in the charging barrel 1; axostylus axostyle 3, axostylus axostyle 3 with mould plastics first 2 and be connected, axostylus axostyle 3 is used for driving and moulds plastics first 2 and slide in feed cylinder 1.

To mould plastics first 2 and feed cylinder 1 slidable connection in this embodiment, it can slide about 1 inside of feed cylinder to mould plastics first 2, it can change the inside cavity size of feed cylinder 1 to mould plastics first 2 and slide about, because the inside cavity of feed cylinder 1 is used as the storage material, consequently can slide at the volume of required sizing material simultaneously and mould plastics first 2 and alternate to storage space, satisfy a gluey volume of gluing required with, need not throw the material just can satisfy the demand of gluing the volume with many times, it is more convenient to let the point operate. And the matching precision of the injection molding head 2 and the charging barrel 1 can reach 0.001mm, and the omission of the sizing material can be avoided.

In this embodiment, a fixing block 11 is disposed on a surface of the charging barrel 1, and the fixing block 11 is used to mount and fix the charging barrel 1, specifically, the charging barrel 1 is fixed on a semiconductor plastic package mold device, a syringe is further fixed, and the fixed syringe is subjected to a dispensing operation. Because the surface of the injector is generally a curved surface, when the injector is fixed, the injector is not easy to fix or the fixing effect is poor due to the smoothness of the curved surface. Set up fixed block 11, when fixing the syringe only need fix fixed block 11 can, need not to fix the syringe itself, can reduce fixed degree of difficulty to fixed effect can further be strengthened, the syringe is fixed effectual, and the point glue precision can be higher when carrying out the point glue operation, can't carry out accurate point glue to the target when avoiding the syringe unstability point glue, thereby influences the point glue effect.

And this embodiment is directly pack the solid rubber cake into feed cylinder 1, heats feed cylinder 1 and carries out the point glue after letting the solid rubber cake melt, and the temperature of feed cylinder 1 reaches 200 ℃ this moment, if can't operate it with the syringe fixed staff, consequently set up the more convenient operation of fixed block 11, the security is higher. In detail, the fixing block 11 is elliptical, and is more convenient to operate when the fixing device fixes the syringe. The solid rubber cake is directly used, so that the material charging is more convenient and the operation is simpler compared with liquid rubber, thereby accelerating the dispensing speed and shortening the working time.

As shown in fig. 5, in the present embodiment, one end of the injection head 2 facing the barrel 1 is matched with the shape of the barrel 1, and the other end is provided with a plurality of arc-shaped transition parts at intervals along the circumference. The concrete structure sets up to cylindric for moulding plastics first 2 one end, and the first 2 other ends of moulding plastics set up to hexagonal prism form, and the junction of hexagonal prism arris and arris is provided with arc transition portion, can reduce frictional force when driving the first 2 of moulding plastics and slide from top to bottom in feed cylinder 1, lets the resistance of slip in-process diminish to the head 2 that conveniently moulds plastics slides. The head 2 of moulding plastics sets up to the column, lets the area of contact grow of the equipment that the sizing material was glued with needs point, makes things convenient for the operation of gluing by a large scale to its top is smooth plane when the head 2 of moulding plastics is the column, can let the more even coating of sizing material on the equipment that needs the point to glue when gluing the operation at the point, makes the point glue effectual. In this embodiment, the other end of the injection head 2 may be a pentagonal prism, a heptagonal prism, or the like, and may be selectively arranged according to specific situations.

In detail, be equipped with two arc walls that the interval is even along the axial of the cylindric surface of head 2 of moulding plastics, can also set up the glayleigh ring 32 in two arc walls, let when moulding plastics head 2 and slide in feed cylinder 1, the compactness when further strengthening moulding plastics head 2 and feed cylinder 1 and being connected lets the sizing material can not omit from feed cylinder 1 bottom. The two arc-shaped grooves are arranged, so that the phenomenon that the GRILL 32 in one arc-shaped groove is damaged can be avoided, the GRILL 32 in the other arc-shaped groove can play a role, and the tightness of the injection molding head 2 and the charging barrel 1 is further improved.

As shown in fig. 2 and fig. 3, the shaft rod 3 in the present embodiment includes a primary rod and a secondary rod, the primary rod is matched with the charging barrel 1, the secondary rod is matched with the injection head 2, and a gley ring 32 is disposed at a contact position of the primary rod and the injection head 2. The GREEN 32 can resist high temperature and has small friction force, and the sealing performance of the joint of the injection molding head 2 and the shaft lever 3 can be enhanced by using the GREEN 32, so that the injection molding head 2 and the shaft lever 3 can keep high tightness when working for a long time. Even being provided with a plurality of annular grooves 31 in 3 surface intervals of axostylus axostyle in this embodiment, a plurality of annular grooves 31 are used for holding the defective material on the 1 inner wall of feed cylinder, in detail, annular grooves 31 are provided with two, it is convenient for clear up the defective material on the 1 inner wall of feed cylinder to set up annular grooves 31 in order to use or after using up, the resistance is little when letting the head of moulding plastics 2 slide from top to bottom, can also avoid the sizing material to solidify the back and be difficult to take off in the feed cylinder 1, make more difficult when clearing up feed cylinder 1.

The last screw hole that is equipped with of head 2 moulds plastics in this embodiment, and the top of screw hole sets up to coniform, correspondingly the shape of 3 auxiliary rods of axostylus axostyle and the screw hole phase-match on the head 2 moulds plastics, be equipped with on the auxiliary rod simultaneously with screw hole assorted screw thread, 3 auxiliary rods of axostylus axostyle and the first 2 threaded connection of moulding plastics, be convenient for like this take off 3 follow heads 2 of moulding plastics with axostylus axostyle, and set the screw hole to coniform, can let 3 auxiliary rods of axostylus axostyle and the first 2 connections of moulding plastics inseparabler, thereby improve the compactness of syringe.

As shown in fig. 4, a limiting component 4 is further disposed on the shaft 3, and the limiting component 4 is used for limiting the moving distance of the shaft 3. The limiting component 4 can be two bar-shaped rods which are symmetrical about the central axis of the shaft lever 3. Set up spacing subassembly 4 in this embodiment, can avoid will moulding plastics head 2 and release feed cylinder 1 when promoting axostylus axostyle 3. Set up spacing subassembly 4 and be two bar poles, bar pole simple structure, simple to operate, and two bar poles are symmetrical about the axis of axostylus axostyle 3, when spacing is carried out to axostylus axostyle 3, the resistance that axostylus axostyle 3 bore is more average, lets spacing effect better.

Alternatively, the position limiting assembly 4 may also be an annular plate. The annular plate can let 3 atresss more even when spacing to axostylus axostyle 3, further improves spacing effect.

The injector further comprises a power mechanism, wherein the power mechanism can be an air cylinder or a motor, the motor or the air cylinder is connected with the shaft rod 3, the shaft rod 3 is pushed to slide, and therefore the shaft rod 3 drives the injection molding head 2 to slide up and down in the charging barrel 1, the operation is more convenient, and the safety is higher. Adopt power unit to let the syringe make a round trip to glue from top to bottom, can use manpower sparingly to dynamics and speed are the same almost during the point is glued, and the point is glued the effect and can be better, and the point precision can be higher.

The injector can be made of tungsten steel WF30 material in the embodiment, the tungsten steel WF30 has good high temperature resistance effect, and is small in abrasion after long-time use, so that the service life of the injector can be prolonged, the injector is not required to be replaced frequently, and the material waste is reduced.

When in use, the shaft lever 3 is connected with the injection molding head 2, and the injection molding head 2 is arranged inside the feeding cylinder 1, so that the complete injector is assembled; then the injector is fixed on the semiconductor plastic package mould equipment, and then the injector is connected with the power mechanism. When needs point are glued, slide earlier and mould plastics head 2, let 1 inside cavitys of feed cylinder can hold the solid rubber cake, heat feed cylinder 1 after the solid rubber cake is filled in, let the solid rubber cake melt into liquid, then start power unit promotes axostylus axostyle 3 and slides, and axostylus axostyle 3 drives and moulds plastics head 2 and upwards slides, to the equipment that needs point to glue carry out some glue operations can.

When not using, axostylus axostyle 3 is when sliding from top to bottom in feed cylinder 1, can clear up the defective material on the 1 inner wall of feed cylinder to make the defective material gather in annular groove 31 on axostylus axostyle 3, take off axostylus axostyle 3 from feed cylinder 1 and can handle the defective material in the annular groove 31, it is more convenient when letting clean 1 inner wall of feed cylinder. Will mould plastics first 2 and 3 take out from feed cylinder 1 with axostylus axostyle, will mould plastics first 2 and the axostylus axostyle 3 separately, treat that feed cylinder 1 cools off the back to feed cylinder 1, mould plastics first 2 and axostylus axostyle 3 clean can.

The working principle of the injector is as follows: firstly, the injection molding head 2 and the shaft rod 3 are connected, the injection molding head 2 is arranged in the feeding cylinder 1 and is positioned at the lower end inside the charging cylinder 1, the injector is assembled, the injector is fixed, the injector is connected with the power mechanism, then the solid rubber cake is placed in a cavity above the charging cylinder 1, the charging cylinder 1 is heated, the temperature is increased to 200 ℃ to melt the solid rubber cake, the power mechanism is started after the solid rubber cake is melted, the power mechanism pushes the shaft rod 3 to slide, the injection molding head 2 slides upwards due to the shaft rod 3, the injection molding head 2 slides upwards to coat the rubber material on a semiconductor needing plastic package, and the glue dispensing operation is finished.

To sum up, the utility model discloses an in the embodiment to mould plastics first 2 and set up to movable, mould plastics first 2 and can slide from top to bottom in feed cylinder 1, mould plastics first 2 pulldowns to feed cylinder 1 bottom position (mould plastics first 2 still in feed cylinder 1), the inside top of feed cylinder 1 is in the cavity state, then put into feed cylinder 1 with the solid rubber cake inside, consequently mould plastics first 2 top feed cylinder 1 inside cavity parts and all can load the solid sizing material, make the storage space grow of solid sizing material, the solid sizing material of storing can satisfy the point of many times and operate. In addition, the injection molding head 2 is arranged to be in a column shape with the same diameter as the charging barrel 1, so that the contact area between the rubber material and the equipment needing to be subjected to glue dispensing is enlarged, the operation of large-area glue dispensing is facilitated, the top of the injection molding head 2 is a flat plane when the injection molding head is in the column shape, the rubber material can be more uniformly coated on the equipment needing to be subjected to glue dispensing when the glue dispensing operation is carried out, and the glue dispensing effect is good. When the sizing material is required to be injected into the equipment, the sizing material is injected into the equipment at one time without any point, so that the injection density of the sizing material is uniform, and the condition that the sizing material is not fully injected into gaps in the equipment is almost avoided.

The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes will occur to 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

1. A syringe, comprising:

a charging barrel; the charging barrel is used for storing materials;

a shaft lever; the shaft lever is connected with the injection molding head and used for driving the injection molding head to slide in the charging barrel.

2. The syringe of claim 1, wherein a surface of the barrel is provided with a mounting block for mounting the barrel.

3. The injector of claim 1, wherein the shaft comprises a primary rod and a secondary rod, the primary rod is adapted to the cartridge, the secondary rod is adapted to the injection head, and a Glare circle is disposed at a contact position of the primary rod and the injection head.

4. The syringe of claim 3, wherein the secondary rod is threadably connected to the injection head.

5. The syringe of claim 1 wherein an annular recess is provided axially along said shaft for receiving debris on the inner wall of said barrel.

6. The syringe of claim 1 wherein a plurality of annular grooves are circumferentially spaced on the surface of the shaft in the axial direction, the annular grooves each receiving a residue on the inner wall of the cartridge.

7. The syringe of claim 1 wherein one end of the injection head facing the barrel matches the shape of the barrel and the other end is provided with a plurality of arcuate transitions at intervals along its circumference.

8. The syringe of claim 1, wherein the shaft further comprises a limiting component for limiting the movement distance of the shaft.

9. The syringe of claim 8, wherein the stop assembly is an annular plate.

10. The syringe of claim 8, wherein the stop assembly is two bar-shaped rods that are symmetrical about a central axis of the shaft.