CN218660338U - Oil-feeding heating type screw and injection molding machine feeding system - Google Patents

Abstract

The utility model belongs to the technical field of injection molding machine charge-in system's technique and specifically relates to a logical oil adds hot type screw rod and injection molding machine charge-in system is related to, wherein, leads to oily hot type screw rod and includes the screw rod body, oil feed way and heating way have been seted up on the screw rod body, the oil feed way is followed the axial direction setting of screw rod body is in the middle part of screw rod body, the heating way encircles the oil feed way sets up, the heating way with the oil feed way intercommunication, be provided with on the screw rod body with the oil inlet of oil feed way intercommunication, this application technical scheme is in the use, and the heat that makes hot oil distribute is located the all-round parcel of material between the feed cylinder inboard and the screw rod body outside, has reduced thermal dissipation, and the screw rod body at the uniform velocity rotates the stirring material, is favorable to guaranteeing that the material is heated evenly. The screw rod overall structure is compact and practical, can accurate regulation and control the temperature, and heating efficiency is high, and it is effectual to heat, can furthest ensure the physical properties of plastics.

Description

Oil-feeding heating type screw and injection molding machine feeding system

Technical Field

The application relates to the technical field of injection molding machine feeding systems, in particular to an oil-feeding heating type screw and an injection molding machine feeding system.

Background

The feeding system of an injection molding machine generally comprises a charging barrel and a screw rod arranged in the charging barrel, wherein a feeding hole is formed in the charging barrel, and solid materials enter the charging barrel through the feeding hole. The periphery of the charging barrel is provided with an electric heating device which is used for heating the materials in the charging barrel to ensure that the materials are in a molten state. Meanwhile, under the drive of the motor, the screw rotates, the screw drives the molten material, namely the liquid material, to be conveyed forwards along the charging barrel through the threads on the screw, and therefore the material is extruded into a die of the injection molding machine through an outlet of the charging barrel.

With respect to the related art among the above, the inventors consider that the following technical drawbacks exist: the material is heated by the electric heating device on the periphery of the charging barrel, the material is not easy to be uniformly heated, and more heat is dissipated through the outer side of the charging barrel to cause heat waste. For this reason, further improvement is awaited.

SUMMERY OF THE UTILITY MODEL

In order to improve the uniformity of being heated of material in the feeding process, reduce thermal dissipation, this application provides a logical oily heating formula screw rod and injection molding machine charge-in system.

In a first aspect, the oil-feeding heating type screw provided by the application adopts the following technical scheme:

the oil-feeding heating type screw comprises a screw body, wherein an oil inlet channel and a heating channel are formed in the screw body, the oil inlet channel is arranged in the middle of the screw body along the axial direction of the screw body, the heating channel surrounds the oil inlet channel, the heating channel is communicated with the oil inlet channel, and an oil inlet communicated with the oil inlet channel is formed in the screw body.

By adopting the technical scheme, during use, the oil supply device is communicated with the oil inlet channel through the oil inlet, hot oil with preset temperature is injected into the oil inlet channel through the oil supply device, the hot oil flows into the heating channel arranged around the oil inlet channel through the oil inlet channel, the outer peripheral side of the screw body is heated by the hot oil in the heating channel, and meanwhile, the screw body rotates around the axis of the screw body, so that materials between the inner side of the charging barrel and the outer side of the screw body are heated into liquid and are pushed forwards to be extruded into the molding system of the injection molding machine. Wherein, the heat that the hot oil gived off is by the all-round parcel of material that is located between the feed cylinder inboard and the screw rod body outside, has reduced thermal dissipation, and the screw rod body is at the uniform velocity rotated stirring material, is favorable to guaranteeing that the material is heated evenly. The screw rod overall structure is compact and practical, can accurate regulation and control the temperature, and heating efficiency is high, and it is effectual to heat, has furthest ensured the physical properties of plastics.

Optionally, the oil inlet channel is a first cylindrical groove with a circular cross section, and the heating channel is a second cylindrical groove with a circular cross section and coaxial with the first cylindrical groove.

By adopting the technical scheme, the second cylindrical groove with the circular cross section and the first cylindrical groove with the circular cross section are coaxially arranged, so that the heating area of the screw body is maximized, the whole structure is reasonable and practical, and the heating efficiency of the screw is improved.

Optionally, the afterbody of screw rod body is extended and is provided with the installation department, the installation department is interior hollow cylinder, the installation department with the position that the oil inlet links up forms the installing port, the installation department is kept away from the tip of installing port is provided with two-way rotary joint, installing port department insert be equipped with the oil inlet pipe of the coaxial intercommunication of oil inlet way, oil inlet pipe keeps away from the one end of installing port with two-way rotary joint's oil inlet intercommunication, the aperture of installing port is less than the internal diameter of installation department, just the external diameter of oil inlet pipe is less than the aperture of installing port, the screw rod body is close to the position of installing port is provided with the second conduction portion, heat the way and pass through the second conduction portion with the installation department intercommunication.

By adopting the technical scheme, the purpose of circulating flow of hot oil can be still realized in the screw rotation process by arranging the bidirectional rotary joint, so that the hot oil with the preset temperature meeting the requirement can be injected according to specific requirements, and the use flexibility and the working reliability of the screw are improved.

Optionally, one side of the heating channel, which is close to the head of the screw body, is communicated with the oil inlet channel through a first conduction part.

Optionally, the first conduction part is a plurality of first cylindrical channels radially arranged with the oil inlet channel as a center, and two ends of each first cylindrical channel are respectively communicated with the heating channel and the oil inlet channel.

Optionally, the second conduction part is a plurality of second cylindrical channels radially arranged by taking the oil inlet channel as a center, and two ends of each second cylindrical channel are respectively communicated with the heating channel and the mounting port.

Optionally, the screw body is provided with a positioning portion.

Optionally, the positioning portion is a circular ring piece convexly arranged on the peripheral side of the screw body.

Optionally, one end of the oil inlet channel, which is far away from the head of the screw body, penetrates through the tail of the screw body to form the oil inlet.

In a second aspect, the present application provides an injection molding machine feeding system, which adopts the following technical scheme:

the injection molding machine feeding system comprises a material barrel and a screw rod arranged in the material barrel, wherein the screw rod adopts the oil-through heating type screw rod.

Through adopting above-mentioned technical scheme for injection molding machine charge-in system overall structure is compact practical, compares with current technical scheme that sets up electric heater unit in the feed cylinder periphery and carry out the heating to the material, has reduced charge-in system's volume greatly, and heating efficiency is high, heats effectually.

As can be seen from the above, the present application has the following beneficial technical effects: in the use, the heat that hot oil gived off is by the all-round parcel of material that is located between the feed cylinder inboard and the screw rod body outside, has reduced thermal dissipation, and the screw rod body is at the uniform velocity rotated stirring material, is favorable to guaranteeing that the material is heated evenly. The screw rod overall structure is compact and practical, and heating efficiency is high, and the heating effect is good.

Additional features and advantages of the application will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by the practice of the application. The objectives and other advantages of the application may be realized and attained by the structure particularly pointed out in the written description and drawings.

Drawings

Fig. 1 is a schematic structural diagram of an oil-passing heating screw according to an embodiment of the present application.

Fig. 2 is a schematic structural diagram of a feeding system of an injection molding machine according to an embodiment of the present disclosure.

Fig. 3 is a cross-sectional view of the injection molding machine feed system of fig. 2.

Fig. 4 is an enlarged view of a portion a in fig. 3.

Description of reference numerals: 10. a charging barrel; 11. a feed inlet; 20. a screw body; 21. a first conduction part; 22. an oil inlet channel; 23. heating a channel; 24. a second conduction part; 25. an installation part; 251. an installation port; 26. a positioning part; 30. a bi-directional rotary joint; 31. an oil inlet; 32. an oil inlet pipe; 33. an oil return port; H. a head of the screw body; E. the tail part of the screw body.

Detailed Description

Reference will now be made in detail to embodiments of the present application, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention and are not to be construed as limiting the present application.

In the description of the present application, 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," "clockwise," "counterclockwise," and the like are used in an orientation or positional relationship indicated in the drawings for convenience in describing the present application and to simplify the description, and are not intended to indicate or imply that the device or element so referred to must have a particular orientation, be constructed in a particular orientation, and be operated in a particular orientation, and thus are not to be construed as limiting the present application. Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or to implicitly indicate the number of technical features indicated. Thus, features defined as "first" and "second" may explicitly or implicitly include one or more of the described features. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise.

In the description of the present application, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; may be mechanically connected, may be electrically connected or may be in communication with each other; they may be directly connected or indirectly connected through intervening media, or may be connected through the use of two elements or the interaction of two elements. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as the case may be.

In this application, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact of the first and second features, or may comprise contact of the first and second features not directly but through another feature in between. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

The following disclosure provides many different embodiments or examples for implementing different features of the application. In order to simplify the disclosure of the present application, specific example components and arrangements are described below. Of course, they are merely examples and are not intended to limit the present application. Moreover, the present application may repeat reference numerals and/or letters in the various examples, such repetition is for the purpose of simplicity and clarity and does not in itself dictate a relationship between the various embodiments and/or configurations discussed. In addition, examples of various specific processes and materials are provided herein, but one of ordinary skill in the art may recognize the application of other processes and/or the use of other materials.

In a first aspect, referring to fig. 1, the oil-feeding heating type screw disclosed in the embodiment of the present application includes a screw body 20, an oil inlet passage 22 and a heating passage 23 are provided on the screw body 20, the oil inlet passage 22 is disposed in the middle of the screw body 20 along the axial direction of the screw body 20, an oil inlet communicated with the oil inlet passage 22 is provided on the screw body 20, the heating passage 23 is disposed around the oil inlet passage 22, and the heating passage 23 is communicated with the oil inlet passage 22.

When the injection molding machine is used, the oil supply device is communicated with the oil inlet channel 22 through the oil inlet, hot oil with a preset temperature is injected into the oil inlet channel 22 through the oil supply device, the hot oil flows into the heating channel 23 arranged around the oil inlet channel 22 through the oil inlet channel 22, the outer peripheral side of the screw body 20 is heated by the hot oil in the heating channel 23, and meanwhile, the screw body 20 rotates around the axis of the screw body, so that materials between the inner side of the charging barrel 10 and the outer side of the screw body 20 are heated into a liquid state and are pushed forwards and extruded into a molding system of the injection molding machine. Adopt above-mentioned technical scheme, the heat that hot oil gived off is located the all-round parcel of material between the material inboard of feed cylinder 10 and the screw rod body 20 outside, has reduced thermal dissipation, and screw rod body 20 at the uniform velocity rotates the stirring material, is favorable to guaranteeing that the material is heated evenly.

Specifically, referring to fig. 1, in some embodiments, the oil inlet passage 22 may be a first cylindrical groove with a circular cross section, the oil inlet passage 22 is disposed along the axial direction of the screw body 20, the heating passage 23 may be a second cylindrical groove with a circular cross section, the second cylindrical groove is coaxial with the first cylindrical groove, and the heating passage 23 is disposed around the oil inlet passage 22 along the axial direction of the screw body 20.

For convenience of description, the head of the screw body 20 is denoted as H end in the drawing, and the tail of the screw body 20 is denoted as E end in the drawing. One side that heating channel 23 is close to the head of screw body 20 is through first conduction part 21 and oil feed channel 22 intercommunication, particularly, first conduction part 21 can set up to be a plurality of first cylindricality passageways that radially set up as the center with oil feed channel 22, and the both ends of every first cylindricality passageway communicate heating channel 23 and oil feed channel 22 respectively, and the tail that screw body 20 was run through to the one end that screw body 20 was kept away from to oil feed channel 22 forms the oil inlet. Therefore, the oil supply device is communicated with the oil inlet channel 22 through the oil inlet, hot oil with a preset temperature is injected into the oil inlet channel 22 through the oil supply device, the hot oil flows into the heating channel 23 through the first cylindrical channel after filling the oil inlet channel 22, and the outer peripheral side of the screw body 20 is heated through the hot oil in the heating channel 23.

Further, referring to fig. 1 to 4, in some embodiments, in order to achieve the purpose of still achieving the circulation flow of the hot oil during the rotation of the screw, a mounting portion 25 is extended at the rear of the screw body 20, and a bidirectional rotary joint 30 is provided at the mounting portion 25. Specifically, the mounting portion 25 is a cylinder with a hollow inner portion, a mounting opening 251 is formed at a position where the mounting portion 25 is connected to the oil inlet, the mounting opening 251 is a cylindrical hole coaxially disposed with the oil inlet, the bidirectional rotary joint 30 is disposed at an end portion of the mounting portion 25 far away from the mounting opening 251, an oil inlet pipe 32 coaxially communicated with the oil inlet passage 22 is inserted into the mounting opening 251, and one end of the oil inlet pipe 32 far away from the mounting opening 251 is communicated with the oil inlet 31 of the bidirectional rotary joint 30. The bore diameter of the mounting opening 251 is smaller than the inner diameter of the mounting portion 25, and the outer diameter of the oil inlet pipe 32 is smaller than the bore diameter of the mounting opening 251. The screw body 20 is provided with a second conduction portion 24 at a position close to the mounting opening 251, and the heating passage 23 communicates with the mounting portion 25 through the second conduction portion 24. Specifically, the second guiding portion 24 may also be a plurality of second cylindrical channels radially arranged with the oil inlet channel 22 as the center, and two ends of each second cylindrical channel are respectively communicated with the heating channel 23 and the mounting opening 251. When the screw rod is used, the oil supply device is communicated with the oil inlet 31 of the bidirectional rotary joint 30, hot oil is injected into the oil inlet channel 22 through the oil inlet pipe 32 and then enters the heating channel 23 through the first conduction part 21, and meanwhile the hot oil in the heating channel 23 flows out of the oil return opening 33 of the bidirectional rotary joint 30 to the oil barrel communicated with the oil supply device through the second conduction part 24 and the mounting part 25 through the mounting opening 251, so that the aim of realizing the circular flow of the hot oil in the screw rod rotating process is fulfilled. It should be noted that the above-mentioned bidirectional rotating joint 30 is the prior art, and the detailed structure and the working principle thereof are not described herein.

Further, referring to fig. 3, when the screw is installed on the barrel 10, in order to position the screw conveniently, the positioning portion 26 is disposed on the screw body 20, specifically, the positioning portion 26 may be a circular ring piece protruding around the screw body 20, correspondingly, a circular ring notch adapted to the circular ring piece is disposed at the opening of the barrel 10, and when the screw is inserted in place, the circular ring piece is clamped in the circular notch.

In a second aspect, referring to fig. 2 to 4, an embodiment of the present application further discloses an injection molding machine feeding system, which includes a barrel 10 and a screw disposed in the barrel 10, and a feeding port 11 is opened at a top of the barrel 10. Specifically, the screw is the oil-through heating type screw, the oil-through heating type screw is coaxially and rotatably arranged in the material barrel 10, when the injection molding machine is used, the oil-through heating type screw is driven by the driving mechanism, a material is fed from the feeding hole 11, the material between the inner side of the material barrel 10 and the outer side of the screw body 20 is heated into a liquid state by the oil-through heating type screw, and the liquid state is pushed forwards and extruded into a molding system of the injection molding machine. This injection molding machine charge-in system overall structure is compact practical, compares with the current technical scheme that sets up electric heater unit in feed cylinder 10 periphery and heat the material, has reduced charge-in system's volume greatly, and heating efficiency is high, and it is effectual to heat.

In the description herein, references to the description of the terms "one embodiment," "certain embodiments," "an illustrative embodiment," "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, schematic representations of the above terms do not necessarily 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.

What has been described above is merely some embodiments of the present application. It will be apparent to those skilled in the art that various changes and modifications can be made without departing from the inventive concept herein, and it is intended to cover all such modifications and variations as fall within the scope of the invention.

Claims (10)

1. The oil-feeding heating type screw comprises a screw body and is characterized in that an oil inlet channel and a heating channel are formed in the screw body, the oil inlet channel is arranged in the middle of the screw body along the axial direction of the screw body, the heating channel surrounds the oil inlet channel, the heating channel is communicated with the oil inlet channel, and an oil inlet communicated with the oil inlet channel is formed in the screw body.

2. The oil-through heating screw according to claim 1, wherein the oil inlet passage is a first cylindrical groove having a circular cross section, and the heating passage is a second cylindrical groove having a circular cross section and disposed coaxially with the first cylindrical groove.

3. The oil-through heating type screw according to claim 2, wherein a mounting portion extends from a tail portion of the screw body, the mounting portion is a hollow cylinder, a mounting opening is formed at a position where the mounting portion is connected to the oil inlet, a bidirectional rotary joint is disposed at an end portion of the mounting portion away from the mounting opening, an oil inlet pipe coaxially communicated with the oil inlet passage is inserted into the mounting opening, one end of the oil inlet pipe away from the mounting opening is communicated with the oil inlet of the bidirectional rotary joint, an aperture of the mounting opening is smaller than an inner diameter of the mounting portion, an outer diameter of the oil inlet pipe is smaller than an aperture of the mounting opening, a second conduction portion is disposed at a position where the screw body is close to the mounting opening, and the heating passage is communicated with the mounting portion through the second conduction portion.

4. The oil-passing and heating screw according to claim 2, wherein a side of the heating passage adjacent to the head portion of the screw body communicates with the oil inlet passage through a first communication portion.

5. The oil-passing and heating screw according to claim 4, wherein the first communicating portion is a plurality of first cylindrical passages radially arranged with the oil inlet passage as a center, and both ends of each of the first cylindrical passages communicate with the heating passage and the oil inlet passage, respectively.

6. The oil-passing and heating screw according to claim 3, wherein the second passage is a plurality of second cylindrical passages radially arranged with an oil inlet passage as a center, and both ends of each of the second cylindrical passages communicate the heating passage and the mounting port, respectively.

7. The oil-through heating type screw according to claim 1, wherein a positioning portion is provided on the screw body.

8. The oil-through heating type screw according to claim 7, wherein the positioning portion is an annular piece provided so as to protrude on a peripheral side of the screw body.

9. The oil-through heating type screw according to claim 1, wherein an end of the oil inlet passage remote from the head of the screw body forms the oil inlet through a tail of the screw body.

10. An injection molding machine feed system comprising a barrel and a screw disposed within the barrel, wherein the screw is an oil-through heated screw according to any one of claims 1 to 9.

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