CN210211245U - Special barrel screw rod for injection molding of silica gel product - Google Patents

Abstract

The utility model relates to an injection molding machine technical field discloses a special barrel screw rod of silica gel product moulding plastics, including screw rod and barrel, the barrel includes the feed port, discharge opening and centre bore, the screw rod is installed in the centre bore, it is provided with annular oil groove on the section of thick bamboo wall between feed port and the discharge opening terminal surface on the barrel, the oil inlet is connected to annular oil groove's one end, the oil-out is connected to the other end, the screw rod has set gradually the optical section with the axle center along the direction of feed, unloading section and mixing section, the axle core of unloading section has the tapering, one side diameter that is close to mixing section is greater than the diameter of opposite side, be provided with screw thread portion on the unloading section, be provided with a plurality of mixing components in the mixing section, mixing component's external diameter is the same with the external diameter of screw thread portion. This barrel screw has guaranteed the stability of silica gel plastic for the qualification rate of silica gel goods reaches the optimum.

Description

Special barrel screw rod for injection molding of silica gel product

Technical Field

The utility model relates to an injection molding machine technical field especially relates to a special barrel screw rod of silica gel product moulding plastics.

Background

Silica gel is a high-activity adsorption material, and silica gel products are indispensable components for manufacturing copying machines, keyboards, electronic dictionaries, remote controllers, toys, silica gel keys and the like, and are widely used for electronic elements, medical industries, mother and infant products, kitchen products and the like. Among these silica gel products, liquid silica gel products such as artificial human organs, medical silica gel breast pads, infant products, mother and infant products, baby bottles, bottle protective sleeves and the like are all formed by injection molding and injection molding of silica gel.

Because the raw material of silica gel injection molding is liquid, pressure and plasticization are not needed during processing products, the injection molding mainly considers the conveying of the silica gel raw material in the screw, and in order to ensure the superiority of the silica gel products, the sealing problem of the screw and the blanking and temperature control problems of the machine barrel need to be considered, so that the energy consumption is reduced.

Most of the existing injection molding machines are provided for plastic parts, so that a machine barrel and a screw rod also meet the requirements of plastic injection molding, for example, a utility model with the patent number of CN206690496U discloses a special machine barrel screw rod for a PET plastic injection molding machine, the screw rod is sequentially provided with a first shaft section, a second shaft section and a third shaft section which are coaxial, the diameter of the second shaft section is larger than that of the first shaft section and the third shaft section, the third shaft section is provided with a first screw thread part for shearing and extruding plastic, the second shaft section is provided with a second screw thread part for secondarily plasticizing the plastic, the first shaft section is provided with a plurality of carding sections for carding the plastic, the carding sections are provided with a third screw thread part, the outer diameter of the first screw thread part is respectively the same as the outer diameters of the second screw thread part and the third screw thread part, and a plurality of first eccentric shaft sections and second eccentric shaft sections which are arranged at intervals are distributed on one side of the third shaft section close to the second shaft section, the screw can well plasticize and mix, but cannot solve the problem of sealing of liquid raw materials, and the barrel does not solve the problem of temperature control, so that the screw is not suitable for silica gel products.

SUMMERY OF THE UTILITY MODEL

The utility model discloses do not have sealed design and temperature control design to the barrel screw rod among the prior art, the shortcoming that unsuitable silica gel products were moulded plastics provides a special barrel screw rod of silica gel products moulding plastics.

In order to solve the technical problem, the utility model discloses a following technical scheme can solve:

the utility model provides a special barrel screw rod of silica gel product injection molding, including screw rod and barrel, the barrel includes the feed port, discharge opening and centre bore, the screw rod is installed in the centre bore, be provided with annular oil groove on the barrel wall that lies in between feed port and the discharge opening terminal surface on the barrel, the oil inlet is connected to annular oil groove's one end, the oil-out is connected to the other end, the screw rod has set gradually the light section with the axle center along the direction of feed, unloading section and mixing section, the axle core of unloading section has the tapering, one side diameter that is close to mixing section is greater than the diameter of opposite side, be provided with screw thread portion on the unloading section, be provided with a plurality of mixing components on the mixing section, the external diameter of mixing component is the same with the external diameter of screw thread portion.

By adopting the scheme, according to the performance of the silica gel, the screw rod designed by people only has the blanking section, the thread part of the blanking section is designed to be almost as deep, so that the compression section does not exist, the liquid silica gel is conveyed by the screw rod without plasticizing, the blanking section is long enough, the pre-plasticizing stroke of the screw rod is ensured to be longer, the thrust of the plastic in the screw rod is also ensured, the conveying force of the silica gel material is ensured, and the optimized structure can ensure the stability of the product. The mixing section is arranged to play a role in mixing and homogenizing. The sealing ring and the wear-resistant ring can be sleeved on the sealing ring position and the wear-resistant ring position, the sealing effect can be effectively achieved by adding the sealing ring, the sealing ring can be protected from being worn by matching with the wear-resistant ring, and the service life is prolonged. The design of the annular oil groove on the machine barrel can be communicated with cooling oil, the temperature stability of the machine barrel is guaranteed to the maximum extent, and the risk of silica gel solidification is greatly reduced.

Preferably, the mixing elements are annular ring members having a plurality of radial projections radially disposed on the core of the mixing section.

By adopting the scheme, the mixing section consisting of the annular ring piece with the radial bulge has good mixing and homogenizing effects.

Preferably, there are uniformly 10 radial projections on the mixing elements.

By adopting the scheme, the 10 bulges are convenient to process, and the mixing effect is good.

Preferably, the number of mixing elements is 8 at intervals on the mixing section.

By adopting the scheme, the mixing effect is good when 8 mixing elements are arranged at intervals.

Preferably, the number of the sealing ring positions is 2, and the sealing ring positions are all arranged between the wear-resisting ring position and the blanking section.

By adopting the scheme, the two sealing rings can be sleeved in the two sealing rings for double sealing.

Preferably, the barrel feed port is an RC3/4 thread configuration.

By adopting the scheme, the sealing performance is ensured by the feed hole with the threaded structure.

The utility model discloses owing to adopted above technical scheme, have apparent technological effect: carry out rational design to screw mechanism, adopt the scheme design that non-compression ratio and mixing component were added, increase sealing washer position and wear ring position, change the barrel feed inlet and be helicitic texture, guaranteed sealing performance, utilize annular oil groove formula design, the biggest stability of having guaranteed the plastic. The designs meet the requirements of customers and market requirements, so that the qualified rate of the silica gel product reaches the optimum, the cost is reduced, the economic benefit is provided, and the processing period of the product can be shortened.

Drawings

FIG. 1 is a schematic structural view of a barrel of the barrel screw dedicated for injection molding of silica gel products of the present invention;

FIG. 2 is a schematic structural view of a screw of the barrel screw dedicated for injection molding of silica gel products of the present invention; some partial views are shown, such as a view in the direction B and a cross-sectional view from K to K; magnified image at G; C-C section view;

FIG. 3 is a schematic structural diagram of a screw of a barrel screw special for injection molding of a silica gel product, which is mounted on a barrel.

The names of the parts indicated by the numerical references in the above figures are as follows:

1. a barrel; 2. a screw; 3. a feed port; 4. a discharge hole; 5. a central bore; 6. an annular oil groove; 7. an oil inlet; 8. an oil outlet; 9. a light section; 10. a discharging section; 11. a mixing section; 12. a threaded portion; 13. a mixing element; 14. a protrusion; 15. a sealing ring position; 16. a wear-resistant ring position; 17. mounting holes; 18. and (6) positioning a groove.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and examples.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention.

In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrated. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the present application, unless expressly stated or limited otherwise, the first feature may be directly on or directly under the second feature or indirectly via intermediate members. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.

Example 1

As shown in fig. 1 to 3, a silica gel product moulds plastics special barrel 1 screw rod 2, including screw rod 2 and barrel 1, barrel 1 includes feed port 3, discharge opening 4 and centre bore 5, screw rod 2 installs in centre bore 5, be provided with annular oil groove 6 on the section of thick bamboo wall that lies in between feed port 3 and the discharge opening 4 terminal surface on barrel 1, oil inlet 7 is connected to annular oil groove 6's one end, the oil-out 8 is connected to the other end, annular oil groove 6 sets up in the middle of barrel 1 section of thick bamboo wall, set up along 1 length direction spiral winding of barrel, oil inlet 7 and play trip mouth all radially set up on the section of thick bamboo wall, conveniently add the cooling oil. The screw rod 2 is provided with a smooth section 9, a blanking section 10 and a mixing section 11 which are coaxial in sequence along the feeding direction, the shaft core of the blanking section 10 has taper, the diameter of one side close to the mixing section 11 is larger than that of the other side, a thread part 12 is arranged on the blanking section 10, a plurality of mixing elements 13 are arranged on the mixing section 11, the outer diameter of each mixing element 13 is the same as that of the thread part 12, and a sealing ring position 15 and a wear-resistant ring position 16 are concavely arranged on one side of the smooth section 9 close to the blanking section 10.

As can be seen from the K-K section in FIG. 2, the front end of the kneading section 11 is also provided with a mounting hole 17 for the fixing screw 2. A self-closing screw head can be fixed on the mounting hole 17. As can be seen from the cross-sectional view C-C in fig. 2, the tail end of the light section 9 is further provided with a positioning slot 18 for mounting with the motor shaft.

The mixing section 11 is arranged to play a role in mixing and homogenizing. The sealing ring position 15 and the wear-resistant ring position 16 can be sleeved with the sealing ring and the wear-resistant ring, the sealing effect can be effectively achieved by adding the sealing ring, the sealing ring can be protected from being worn by matching with the wear-resistant ring, and the service life is prolonged. The design of annular oil groove 6 on barrel 1 can lead to cooling oil, and furthest's assurance barrel 1's temperature is stable, the risk of greatly reduced silica gel solidification.

Example 2

This embodiment is further defined on the basis of embodiment 1, and as can be seen from the view in the direction B in fig. 2, the mixing element 13 is an annular ring member provided with a plurality of radial projections 14 in the radial direction on the axial core of the mixing segments 11. The number of the radial projections 14 on the kneading elements 13 is 10 in a uniform manner. The kneading elements 13 were arranged in 8 spaced-apart relationship on the kneading segments 11. The design of the mixing elements 13 is such that the mixing effect is good.

Example 3

The embodiment is further defined on the basis of embodiment 2, and as can be seen from the enlarged view at G in fig. 2, 2 sealing ring positions 15 are provided, and are all arranged between the wear-resistant ring position and the blanking section 10. Two sealing rings can be sleeved in the two sealing ring positions 15 to carry out double sealing.

The feed hole 3 of the machine barrel 1 is of an RC3/4 thread structure, and the feed hole 3 of the thread structure ensures the sealing performance.

Claims (6)

1. The utility model provides a special barrel screw rod of silica gel goods is moulded plastics, includes screw rod (2) and barrel (1), and barrel (1) includes feed port (3), discharge opening (4) and centre bore (5), and install in centre bore (5) screw rod (2), its characterized in that: the cylinder wall of the cylinder (1) between the end faces of the feed hole (3) and the discharge hole (4) is provided with an annular oil groove (6), one end of the annular oil groove (6) is connected with an oil inlet (7), the other end of the annular oil groove is connected with an oil outlet (8), the screw (2) is sequentially provided with a coaxial smooth section (9), a blanking section (10) and a mixing section (11) along the feeding direction, the shaft core of the blanking section (10) has a taper, the diameter of one side close to the mixing section (11) is larger than that of the other side, the blanking section (10) is provided with a threaded portion (12), the mixing section (11) is provided with a plurality of mixing elements (13), the outer diameter of each mixing element (13) is the same as that of the threaded portion (12), and one side, close to the blanking section (10), of the smooth section (9) is concavely provided with.

2. The special barrel screw for injection molding of the silica gel product as claimed in claim 1, wherein: the mixing element (13) is an annular ring member provided with a plurality of radial protrusions (14) on the axial core of the mixing section (11) in the radial direction.

3. The special barrel screw for injection molding of the silica gel product as claimed in claim 2, wherein: 10 radial projections (14) are uniformly arranged on the mixing element (13).

4. The special barrel screw for injection molding of the silica gel product as claimed in claim 3, wherein: the number of the kneading elements (13) is 8 at intervals on the kneading segment (11).

5. The special barrel screw for injection molding of the silica gel product as claimed in claim 1, wherein: the number of the sealing ring positions (15) is 2, and the sealing ring positions and the blanking section (10) are all arranged between the wear-resistant ring positions.

6. The special barrel screw for injection molding of the silica gel product as claimed in claim 1, wherein the feed hole (3) of the barrel (1) is of a RC3/4 thread structure.

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