CN207522998U - Injection tube, injecting assembly and injection molding machine - Google Patents

Abstract

The utility model provides a kind of injection tube, injecting assembly and injection molding machine, which is suitable for receiving molten state material and suitable for projecting molten state material at a high speed.The injection tube includes shooting cylinder, sealing drum and material receiving port；Wherein, chamber is is penetrated in the inside of the shooting cylinder, and the first port of the shooting cylinder is injection port, and the sealing drum is plugged in the second port of the shooting cylinder；The barrel that extends radially through the shooting cylinder of the material receiving port along the shooting cylinder, the material receiving port connect and with the chamber of penetrating far from the injection port.

Description

Injection tube, injection assembly and injection molding machine

Technical Field

The utility model belongs to the technical field of the technique of moulding plastics and specifically relates to an injection tube, injection subassembly and injection molding machine are related to.

Background

An injection molding machine, also known as an injection machine, is a molding apparatus for molding thermoplastic plastics or thermosetting plastics into plastic products of various shapes by using a plastic molding die. The injection molding machine can heat the plastic material in the operation process, so that the plastic material is injected into a mold cavity for molding after being converted into a molten state. The development of modern electronic industry requires more integration, precision and miniaturization of injection products, and the development trend requires higher speed and precision of an injection molding machine when injecting molten plastic materials so as to meet the development requirements of the injection products.

In the prior art, an injection molding machine generally includes a storage barrel, a motor, a screw rod and a driving part, wherein the screw rod is disposed in the storage barrel, the screw rod and the storage barrel are coaxially disposed, the screw rod can axially move while rotating, the motor is connected with the screw rod and is used for driving the screw rod to rotate along a central axis thereof, the driving part is connected with the motor and is used for driving the motor to axially move along a motor shaft thereof, the motor and the screw rod move synchronously along an axial direction of the screw rod under the driving of the driving part, the screw rod enables a plastic material to be converted from an initial state into a molten state through friction, extrusion, shearing and other modes, and meanwhile, the material in the storage barrel is driven by the screw rod to axially move along the screw rod and is ejected.

In other words, the material conveying and injection of the existing injection molding machine are completed by the same component, the material conveying and material injection processes are combined, and the injection speed and the precision of the material are higher due to the difference between the conveying speed of the material and the injection speed of the material, so that the injection cylinder suitable for receiving the molten material and suitable for high-speed injection of the material is provided to solve the problem to be solved urgently in order to improve the material injection speed and precision of the injection molding machine.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an injection tube, this injection tube are applicable to and receive molten state material and are applicable to the high-speed molten state material that jets out.

The utility model provides an injection tube, which comprises an injection tube, a sealing tube and a material receiving port; wherein,

the injection device comprises an injection cylinder, a sealing cylinder, an injection valve, a first valve, a second valve, a first valve, a second valve and a third valve, wherein the injection cavity is formed inside the injection cylinder;

the material receiving port penetrates through the wall of the injection cylinder along the radial direction of the injection cylinder, and is communicated with the injection cavity and far away from the injection port.

As a further improvement of the technical scheme, an intermediate material channel penetrating through the wall of the sealing cylinder is arranged on the sealing cylinder;

the material receiving opening is communicated with the injection cavity through the middle material channel.

As a further improvement of the technical scheme, the intermediate material channel is an arc-shaped channel.

As a further improvement of the technical scheme, the device also comprises a receiving part;

the receiving part is arranged on the outer wall of the shooting barrel;

the material receiving part is provided with a material receiving channel, a first port of the material receiving channel is used for being connected with a discharge port of the charging barrel, and a second port of the material receiving channel is communicated with the material receiving port.

As a further improvement of the technical scheme, a clamping groove is formed in the material receiving part;

the first port of the material receiving channel is located in the clamping groove.

As a further improvement of the technical scheme, the clamping groove is a semi-spherical groove.

As a further improvement of the technical scheme, the receiving part is connected with the shooting barrel in a clamping manner.

As a further improvement of the above technical solution, the material receiving channel includes a first material receiving channel and a second material receiving channel communicated with the first material receiving channel;

the first material receiving channel is coaxially arranged with and communicated with the material receiving port;

the second material receiving channel and the first material receiving channel are arranged at an angle.

The injection tube provided by the utility model comprises an injection tube, a sealing tube and a material receiving port; the injection device comprises an injection cylinder, a sealing cylinder, a first end opening, a second end opening, a first end opening and a second end opening, wherein the injection cylinder is internally provided with an injection cavity; the material receiving port penetrates through the wall of the injection cylinder along the radial direction of the injection cylinder, and is communicated with the injection cavity and far away from the injection port. During the use, make the pay-off mouth of the feeding mechanism of injection molding machine be connected with the material mouth that connects on this injection tube, peg graft the injection core of injection molding machine in the injection tube, make injection core and sealed section of thick bamboo sealing connection, make and be formed with the clearance between injection core and the injection tube, the aforesaid connects the clearance intercommunication between material mouth and injection core and the injection tube, so, this injection tube receives the material back that comes from the feeding mechanism of injection molding machine through connecing the material mouth, this material arrives the clearance between injection core and the injection tube and reach the front end of injection core through connecing the material mouth, drive the material through the injection core and inject by the injection mouth. The material receiving port of the injection cylinder is communicated with the injection cavity of the injection cylinder, the sealing cylinder is inserted in the second end of the injection cylinder, when molten materials enter the injection cavity from the material receiving port, due to the sealing effect of the sealing cylinder, the materials are located in the area at the front end of the injection core in the injection cavity and in the gap between the injection core and the injection cylinder, even if the materials need to be injected at high pressure and high speed, the molten materials cannot overflow from the second end of the injection cylinder, and the injection cylinder is suitable for the molten materials and is suitable for high-speed injection of the materials.

Another object of the present invention is to provide an injection assembly, which comprises an injection core and an injection tube as described above;

the injection core is inserted with the injection tube; wherein,

a gap is arranged between the front end of the injection core and the inner wall of the injection cavity of the injection cylinder;

the rear end of the injection core is in sealed insertion connection with a sealing barrel in the injection barrel;

the material receiving port of the injection cylinder is communicated with the gap.

The beneficial effects of the injection assembly compared with the prior art are the same as the beneficial effects of the injection tube compared with the prior art, and are not described in detail herein.

Another object of the present invention is to provide an injection molding machine comprising an injection cartridge as described above, or,

an injection assembly as described above.

The beneficial effects of the injection molding machine compared with the prior art are the same as the beneficial effects of the injection tube or the injection assembly compared with the prior art, and are not described again here.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the technical solutions in the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic view of an injection cartridge according to an embodiment of the present invention;

FIG. 2 is a coaxial cross-sectional view of FIG. 1;

fig. 3 is a schematic view of an injection assembly provided by an embodiment of the present invention;

FIG. 4 is a coaxial cross-sectional view of FIG. 3;

fig. 5 is a schematic view of an inject core according to an embodiment of the invention.

Reference numerals:

1-shooting a cylinder; 2-sealing the cylinder; 3-receiving a material port; 4-shooting a cavity; 5-an injection port; 6-intermediate material channel; 7-receiving the material; 8-a material receiving channel; 9-a clamping groove; 10-an inject core; 11-gap one; 12-gap two; 101-shooting a core; 102-a non-return ring; 103-a shooting flow groove; 104-a core; 105-a tip; 106-a stop.

Detailed Description

The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

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 orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed 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 in specific cases to those skilled in the art.

Fig. 1 is a schematic view of an injection tube provided in an embodiment of the present invention, and fig. 2 is a coaxial cross-sectional view of fig. 1. Referring to fig. 1 and 2, an injection tube provided by the embodiment of the present invention includes an injection tube 1, a sealing tube 2 and a receiving port 3; the injection device comprises an injection cylinder 1, a sealing cylinder 2, an injection port 5, an injection cavity 4, an injection port 5, a first port and a second port, wherein the injection cavity 4 is arranged inside the injection cylinder 1; the material receiving port 3 penetrates through the wall of the injection cylinder 1 along the radial direction of the injection cylinder 1, and the material receiving port 3 is communicated with the injection cavity 4 and is far away from the injection port 5.

During the use, make the pay-off mouth of the feeding mechanism of injection molding machine be connected with the material mouth that connects on this injection tube, peg graft the injection core of injection molding machine in the injection tube, make injection core and sealed section of thick bamboo sealing connection, make and be formed with the clearance between injection core and the injection tube, the aforesaid connects the clearance intercommunication between material mouth and injection core and the injection tube, so, this injection tube receives the material back that comes from the feeding mechanism of injection molding machine through connecing the material mouth, this material arrives the clearance between injection core and the injection tube and reach the front end of injection core through connecing the material mouth, drive the material through the injection core and inject by the injection mouth. The material receiving port of the injection cylinder is communicated with the injection cavity of the injection cylinder, the sealing cylinder is inserted in the second end of the injection cylinder, when molten materials enter the injection cavity from the material receiving port, due to the sealing effect of the sealing cylinder, the materials are located in the area at the front end of the injection core in the injection cavity and in the gap between the injection core and the injection cylinder, even if the materials need to be injected at high pressure and high speed, the molten materials cannot overflow from the second end of the injection cylinder, and the injection cylinder is suitable for the molten materials and is suitable for high-speed injection of the materials.

As a further improvement of the above technical solution, the sealing cylinder 2 is provided with an intermediate material channel 6 penetrating through the cylinder wall of the sealing cylinder 2, the material receiving port 3 is communicated with the injection cavity 4 through the intermediate material channel 6, and preferably, the intermediate material channel 6 is an arc-shaped channel. The arc-shaped path is arranged, so that materials can smoothly arrive at the gap from the material receiving port, the arc-shaped path does not have a break angle or a dead angle, the materials cannot be accumulated in the arc-shaped path, the waste of the materials is reduced, and meanwhile, the smoothness of the operation of the materials is improved.

As a further improvement of the technical scheme, the device also comprises a receiving part 7; the receiving part 7 is arranged on the outer wall of the shooting barrel 1; the receiving part 7 is provided with a receiving channel 8, a first port of the receiving channel 8 is used for being connected with a discharge port of the charging barrel, a second port of the receiving channel 8 is communicated with the receiving port 3, and the receiving part is used for connecting the injection barrel and the feeding mechanism and plays a role in transition.

As a further improvement of the technical scheme, a clamping groove 9 is arranged on the material receiving part 7; connect the first port of material passageway 8 to be located joint groove 9, adopt the form of joint can conveniently connect installation, dismantlement and maintenance between material piece and the injection tube.

As the further improvement of the technical scheme, the clamping groove is a hemispherical groove, in other words, the feeding port of the feeding mechanism and the first port of the material receiving channel are matched and clamped in a spherical contact mode, so that the matching angle between the feeding port and the material receiving channel can be adjusted according to actual needs, in other words, the matching angle between the feeding mechanism and the injection cylinder can be adjusted in a spherical contact mode, and therefore the use flexibility of the whole injection molding machine is improved.

As the further improvement of the technical scheme, the material receiving part is connected with the injection cylinder in a clamping mode, and the form of clamping is adopted, so that the material receiving part and the injection cylinder can be conveniently mounted, dismounted, repaired and maintained.

As a further improvement of the technical scheme, the material receiving channel comprises a first material receiving channel and a second material receiving channel communicated with the first material receiving channel, and the first material receiving channel is coaxially arranged and communicated with the material receiving port; the second connects the material passageway to be the angle setting with first connecing the material passageway, and when the vertical placing of injection tube, feeding mechanism's feed cylinder is the angle setting with this injection tube, should connect the material passageway and can be convenient for the material to get into the penetrating chamber of injection tube smoothly.

Fig. 3 is a schematic view of an injection assembly provided in an embodiment of the present invention, fig. 4 is a coaxial cross-sectional view of fig. 3, and fig. 5 is a schematic view of an inject core provided in an embodiment of the present invention. Referring to fig. 3 to 5, another object of an embodiment of the present invention is to provide an injection assembly, which includes an injection core 10 and an injection tube as above; the injection core 10 is inserted with the injection tube; wherein, a gap is arranged between the front end of the injection core 10 and the inner wall of the injection cavity 4 of the injection cylinder, and the gap is a gap I11; the rear end of the injection core 10 is in sealed insertion connection with the sealing barrel 2 in the injection barrel; the material receiving port 3 of the injection cylinder is communicated with the gap.

The injection core 10 is inserted into the injection tube and can move relative to the injection tube, the injection core 10 comprises a shooting core 101 and a non-return ring 102, the front end of the shooting core 101 is provided with a jet flow groove 103 extending along the axial direction of the shooting core, and the rear end of the shooting core 101 is used for being connected with a driving piece; a non-return ring 102 is sleeved on the shooting core 101, the non-return ring 102 is located between the shooting core 101 and the injection cylinder, and the non-return ring 102 can move along the axial direction of the shooting core 101 so as to block or communicate the gap one 11 with the jet groove 103.

When the injection device is used, the non-return ring moves along the axial direction of the injection core to enable the first gap to be communicated with the jet flow groove, materials reach the guide groove through the first gap, and the materials continuously reach the front end of the injection tip through the guide groove to achieve storage and metering; after the material storage is finished, the check ring moves along the axial direction of the injection core to enable the first gap to be blocked with the jet flow groove, the check ring blocks and seals an inlet channel of the material, the injection core pushes the molten plastic raw material to finish injection, and the plastic raw material flows into a locked mold cavity to be molded and cooled and then is taken out.

When materials are injected, the non-return ring seals the passage of the materials entering the front end of the injection core, so that the plastic raw materials are prevented from leaking along the original entering passage, the metering of the materials can be more accurate, and the pollution to equipment caused by the leakage of the materials is prevented; and when the plastic raw materials are accumulated, the materials are continuously accumulated from front to back along the axial direction of the injection tube, when the injection core pushes the materials to inject, the materials which enter the injection tube firstly are ejected, and then the materials which enter the injection tube are ejected, so that the first-in first-out is realized, no dead angle is formed, the undesirable phenomena of color change and the like caused by degradation or decomposition of the materials in the injection process are ensured, and the injection precision of the injection assembly is high and the quality of the obtained injection product is high.

The non-return ring is provided with a conducting position and a blocking position, and can move between the conducting position and the blocking position; when the materials reach the clearance I, the non-return ring moves from the blocking position to the conducting position under the pressure action of the materials so as to lead the clearance I to be conducted with the jet flow groove; when the driving piece drives the shooting core to move from back to front, the non-return ring moves from the conduction position to the blocking position so as to block the gap I from the jet groove.

When the material reaches the gap, under the pressure action of the material, the non-return ring moves from the blocking position to the conducting position to enable the gap I to be conducted with the jet groove, at the moment, the material reaches the guide groove through the gap I, the material reaches the front end of the injection core through the guide groove, at the moment, the material is continuously accumulated at the front end of the injection core, the material pushes the injection core to move backwards, and when the injection core moves to a set value, the discharge metering is completed; after the material storage is finished, the driving piece is started to drive the injection core to move backwards and forwards, in the process, the injection core moves forwards, namely, the check ring moves backwards, the check ring moves from the conduction position to the blocking position to block the gap I from the jet flow groove, the check ring blocks and seals the material inlet channel, the injection core pushes the check ring to move forwards continuously to push the molten plastic raw material to move forwards, the plastic raw material flows into the locked mold cavity through the injection port to be molded and cooled, then the product is taken out, and the injection molding of the product is finished.

The injection core 10 further comprises a limiting piece 106, the limiting piece 106 is fixedly sleeved with the injection core 101, a second gap 12 is arranged between the limiting piece 106 and the injection cylinder, and the first gap 11 is communicated with the second gap 12; the check ring 102 can be close to or far from the limiting member 106 along the axial direction of the core 101 so that the gap one 11 and the jet groove 103 are blocked or communicated through the gap two 12.

The core 101 comprises a core body 104 and a tip 105; wherein, the shooting tip 105 is connected with the front end of the core body 104, the rear end of the core body 104 is used for connecting with a driving piece, and the jet flow groove 103 is arranged on the shooting tip 105; check ring 102 is sleeved between injection tip 105 and the injection cylinder and check ring 102 can approach or depart from limiting piece 106 along the axial direction of injection tip 105 so that gap one 11 and jet groove 103 are blocked or communicated through gap two 12.

When the material reaches a second gap between the limiting piece and the injection tube, under the pressure action of the material, the non-return ring moves from the blocking position to the conducting position to enable the second gap to be conducted with the jet groove, at the moment, the material reaches the guide groove through the second gap, the material reaches the front end of the injection core through the guide groove, at the moment, the material is continuously accumulated at the front end of the injection core, the material pushes the injection core to move backwards, and when the injection core moves to a set value, the discharge metering is completed; after the material storage is finished, the second driving piece is started to drive the injection core to move backwards and forwards, in the process, the injection core moves forwards, namely, the check ring moves backwards, the check ring moves from the conduction position to the blocking position to block the gap I from the jet flow groove, the check ring blocks and seals the material inlet channel, the injection core pushes the check ring to move forwards continuously to push the molten plastic raw material to move forwards, the plastic raw material flows into the locked mold cavity through the injection port to be molded and cooled, then the product is taken out, and the injection molding of the product is finished.

The beneficial effects of the injection assembly compared with the prior art are the same as the beneficial effects of the injection tube compared with the prior art, and are not described in detail herein.

Another object of the present invention is to provide an injection molding machine, which comprises the above injection tube, or the above injection assembly.

The beneficial effects of the injection molding machine compared with the prior art are the same as the beneficial effects of the injection tube or the injection assembly compared with the prior art, and are not described again here.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention.

Claims (10)

1. An injection tube is characterized by comprising an injection tube, a sealing tube and a material receiving port; wherein,

the injection device comprises an injection cylinder, a sealing cylinder, an injection valve, a first valve, a second valve, a first valve, a second valve and a third valve, wherein the injection cavity is formed inside the injection cylinder;

the material receiving port penetrates through the wall of the injection cylinder along the radial direction of the injection cylinder, and is communicated with the injection cavity and far away from the injection port.

2. The syringe of claim 1, wherein the sealing barrel is provided with an intermediate channel extending through a wall of the sealing barrel;

the material receiving opening is communicated with the injection cavity through the middle material channel.

3. The syringe of claim 2, wherein the intermediate channel is an arcuate channel.

4. The syringe of claim 1, further comprising a receiving member;

the receiving part is arranged on the outer wall of the shooting barrel;

the material receiving part is provided with a material receiving channel, a first port of the material receiving channel is used for being connected with a discharge port of the charging barrel, and a second port of the material receiving channel is communicated with the material receiving port.

5. The syringe of claim 4, wherein the receiving member is provided with a snap groove;

the first port of the material receiving channel is located in the clamping groove.

6. The syringe of claim 5, wherein the snap-in groove is a hemispherical groove.

7. The syringe of claim 4, wherein the receiving member is connected to the syringe by a snap-fit connection.

8. The syringe of claim 4, wherein the receiving channel comprises a first receiving channel and a second receiving channel communicated with the first receiving channel;

the first material receiving channel is coaxially arranged with and communicated with the material receiving port;

the second material receiving channel and the first material receiving channel are arranged at an angle.

9. An injection assembly comprising an inject core, and the syringe of any of claims 1-8;

the injection core is inserted with the injection tube; wherein,

a gap is arranged between the front end of the injection core and the inner wall of the injection cavity of the injection cylinder;

the rear end of the injection core is in sealed insertion connection with a sealing barrel in the injection barrel;

the material receiving port of the injection cylinder is communicated with the gap.

10. An injection molding machine, comprising an injection cartridge according to any one of claims 1 to 8, or,

comprising an injection assembly according to claim 9.