阅读说明：本技术 截流同步封胶射咀 (Closure synchronous sealing glue nozzle ) 是由 高建平 肖加云 肖锐 于 2020-07-24 设计创作，主要内容包括：本发明公开了一种截流同步封胶射咀,包括一射咀中座和一设置于射咀中座外侧且与其同向布置的动力组件,其中：射咀中座上沿其轴向开设一注胶流道,沿其径向开设一与注胶流道连通的封胶腔,且封胶腔内活动设置一封胶阀芯；封胶阀芯的底端连接动力组件,其顶端以在动力组件的驱动下连通或阻断注胶流道。本发明提供的截流同步封胶射咀,采用杠杆推动封胶阀芯来阻断流道内熔融的塑料流动,从而解决注塑机溶胶时因易往外溢胶的问题,既能提高产品品质提高生产稳定性,也能明显加快生产周期,使注塑机能一边溶胶一边进行开模、顶出、合模等其他动作同时进行。(The invention discloses a closure synchronous sealing glue injection nozzle, which comprises an injection nozzle middle seat and a power assembly arranged outside the injection nozzle middle seat and arranged in the same direction with the injection nozzle middle seat, wherein: a glue injection flow channel is arranged on the injection nozzle middle seat along the axial direction of the injection nozzle middle seat, a glue sealing cavity communicated with the glue injection flow channel is arranged along the radial direction of the injection nozzle middle seat, and a glue sealing valve core is movably arranged in the glue sealing cavity; the bottom end of the sealing glue valve core is connected with the power assembly, and the top end of the sealing glue valve core is communicated or blocked with the glue injection flow channel under the driving of the power assembly. The closure synchronous sealing glue injection nozzle provided by the invention adopts the lever to push the sealing glue valve core to block the flow of molten plastic in the flow channel, thereby solving the problem that glue easily overflows outwards when the injection molding machine is used for dissolving glue, not only improving the product quality and improving the production stability, but also obviously accelerating the production period, and enabling the injection molding machine to simultaneously perform other actions such as mould opening, ejection, mould closing and the like while dissolving the glue.)

1. Cut off and seal in step and glue and penetrate and chew, its characterized in that, including penetrate and chew well seat (2) and one set up in penetrate and chew well seat (2) outside and rather than the power component who arranges in the syntropy, wherein:

a glue injection flow channel (5) is formed in the injection nozzle middle seat (2) along the axial direction of the injection nozzle middle seat, a glue sealing cavity (6) communicated with the glue injection flow channel (5) is formed in the radial direction of the injection nozzle middle seat, and a glue sealing valve core (9) is movably arranged in the glue sealing cavity (6);

the bottom end of the glue sealing valve core (9) is connected with the power assembly, and the top end of the glue sealing valve core is communicated with or blocked from the glue injection flow channel (5) under the driving of the power assembly.

2. The nozzle of claim 1, wherein a sealing plug (10) is embedded in the inner wall of the injection runner (5) and is engaged with the top end of the sealing valve core (9).

3. The simultaneous sealant nozzle of claim 1, wherein the glue injection channel (5) comprises a proximal section, a middle section and a distal section, wherein:

the diameter of the proximal end section is larger than that of the distal end section, the diameter of the distal end section is larger than that of the middle section, and two ends of the middle section are in smooth transition with the proximal end section and the middle section respectively.

4. The intercepting synchronous glue nozzle according to claim 1, wherein a valve sleeve (7) is embedded at the top end of the glue sealing cavity (6), a compression nut (8) is arranged at the bottom end of the glue sealing cavity in a threaded manner, and the glue sealing valve core (9) is slidably assembled in the valve sleeve (7) and the compression nut (8) in a limiting manner.

5. The simultaneous sealant nozzle of claim 1, wherein the power assembly comprises:

the top end of one side of the Y-shaped lever (11) is hinged to the jet nozzle middle seat (1), and the top end of the other side of the Y-shaped lever is abutted to the bottom end of the sealing glue valve core (9); and

and the telescopic rod (12) of the driving mechanism (13) is hinged with the bottom end of the Y-shaped lever (11).

6. The nozzle of claim 1, further comprising:

a nozzle connecting flange (1) arranged at the far end of the nozzle middle seat (2); and

and the injection nozzle is arranged at the far end of the injection nozzle connecting flange (1).

7. The simultaneous sealing compound nozzle of claim 6, wherein the nozzle connecting flange (1) and the outer peripheral wall of the distal end of the nozzle center seat (2) are provided with a first heating ring (15).

8. The nozzle of claim 1, further comprising:

a material pipe connecting body (3) arranged at the near end of the nozzle middle seat (2); and

and the middle seat connecting body (4) is connected with the injection nozzle middle seat (2) and the material pipe connecting body (3).

9. The nozzle of claim 8, wherein the proximal end of the nozzle center (2) and the outer peripheral wall of the center connector (4) are sleeved with a second heating ring (16).

10. The nozzle of claim 8, further comprising:

and the fixed flange (14) is tightly assembled on the middle seat connecting body (4) through a compression nut (17), and the fixed flange (14) is fixedly connected with the driving mechanism (13) through a supporting frame (20).

Technical Field

The invention relates to an injection nozzle of an injection molding machine, in particular to a closure synchronous sealing glue injection nozzle.

Background

The injection molding product is widely applied in various industries, and along with the continuous improvement of the living standard of people, the innovation and the improvement of the injection molding industry are continuous in the development process, so that the product quality is improved, and the production cost is correspondingly reduced. The injection molding is used as a main molding method of plastic products, and is characterized by high production efficiency, strong adaptability to various plastic processing, capability of molding injection products with complex shapes and accurate sizes, and wide application in various fields of national defense industry, aviation, traffic, electrical, machinery, building, agriculture, culture and education and the like.

The existing injection molding process is generally carried out by adopting an injection molding machine, but in the process of sol dissolving, the phenomenon that glue is easy to overflow outwards at a nozzle exists due to backpressure and resistance when a screw rod retreats, so that the quality and the production efficiency of injection molding products are reduced; most injection molding machines in the current market are basically in an injection molding mode of melting glue and then opening a mold, and the problem of slow injection molding period caused by long glue dissolving time is solved. If the mold can be opened and closed or the gas state action and the sol action can be carried out simultaneously, the molding period can be greatly reduced, thereby greatly improving the production efficiency and obtaining the product with changed quality. Therefore, there is a need for further improvements and innovations in the prior art.

Disclosure of Invention

Aiming at the defect that glue is easy to overflow outwards when an injection molding machine in the prior art is used for dissolving glue, the invention provides the closure synchronous glue sealing nozzle which can improve the product quality and the production stability and can obviously accelerate the production period.

To solve the above problems in the prior art.

In order to achieve the purpose, the invention adopts the following technical scheme:

the invention provides a closure synchronous sealing glue injection nozzle, which comprises an injection nozzle middle seat and a power assembly arranged on the outer side of the injection nozzle middle seat and arranged in the same direction as the injection nozzle middle seat, wherein:

a glue injection flow channel is arranged on the injection nozzle middle seat along the axial direction of the injection nozzle middle seat, a glue sealing cavity communicated with the glue injection flow channel is arranged along the radial direction of the injection nozzle middle seat, and a glue sealing valve core is movably arranged in the glue sealing cavity;

the bottom end of the glue sealing valve core is connected with the power assembly, and the top end of the glue sealing valve core is communicated with or blocked from the glue injection flow channel under the driving of the power assembly.

Furthermore, on the closure synchronous sealing glue nozzle, a sealing glue plug matched with the top end of the sealing glue valve core is embedded in the inner wall of the glue injection runner.

Further, on the synchronous sealing glue nozzle of damming, the injecting glue runner includes proximal section, middle section and distal section, wherein:

the diameter of the proximal end section is larger than that of the distal end section, the diameter of the distal end section is larger than that of the middle section, and two ends of the middle section are in smooth transition with the proximal end section and the middle section respectively.

Furthermore, on the closure synchronous sealing glue nozzle, a valve sleeve is embedded at the top end of the sealing glue cavity, a compression nut is arranged at the bottom end of the sealing glue cavity in a threaded manner, and the sealing glue valve core is slidably assembled in the valve sleeve and the compression nut in a limiting manner.

Further, on the synchronous gluey nozzle of sealing up of damming, power component includes:

the top end of one side of the Y-shaped lever is hinged on the jet nozzle middle seat, and the top end of the other side of the Y-shaped lever is abutted with the bottom end of the sealing glue valve core; and

and the telescopic rod of the driving mechanism is hinged and connected with the bottom end of the Y-shaped lever.

Further, on the synchronous gluey nozzle of sealing up of damming, still include:

a nozzle connecting flange arranged at the far end of the nozzle middle seat; and

and the injection nozzle is arranged at the far end of the injection nozzle connecting flange.

Further preferably, on the closure synchronous sealing glue injection nozzle, a first heating ring is sleeved on the injection nozzle connecting flange and the outer peripheral wall of the far end of the injection nozzle middle seat.

Further, on the synchronous gluey nozzle of sealing up of damming, still include:

a material pipe connector arranged at the near end of the injection nozzle middle seat; and

and the middle seat connecting body is connected with the injection nozzle middle seat and the material pipe connecting body.

Further preferably, on the closure synchronous sealing glue injection nozzle, a second heating ring is sleeved on the near end of the injection nozzle middle seat and the peripheral wall of the middle seat connecting body.

Further preferably, the intercepting synchronous sealing glue injection nozzle further comprises:

the fixing flange is tightly pressed and assembled on the middle seat connecting body through the compression nut, the fixing flange is fixedly connected with the driving mechanism through the supporting frame, and the technical scheme is adopted, so that compared with the prior art, the fixing flange has the following technical effects:

(1) the lever is adopted to push the sealing glue valve core to block the flow of the molten plastic in the flow channel, so that the problem that the glue easily overflows outwards when the injection molding machine is used for dissolving the glue is solved, the product quality can be improved, the production stability is improved, and the production period can be obviously accelerated;

(2) the sealing glue valve core is assembled in the valve sleeve in a limiting mode through the compression nut and moves back and forth relative to the valve sleeve and the sealing glue plug under the action of external force of the lever, and the sealing glue valve core and the valve sleeve or the sealing glue plug can be ground again or independently replaced after being worn for a long time, so that the replacement is simple and convenient, and the equipment maintenance cost is low;

(3) two heating rings are assembled at two ends of the injection nozzle middle seat, and two temperature sensing probes are arranged on the injection nozzle and the injection nozzle middle seat, so that the temperature of the whole set of sealing glue injection nozzle is ensured to be more uniform and stable;

(4) the length and size of the injection nozzle and the length and size of the glue injection valve core on the closure synchronous glue sealing injection nozzle can be designed according to the size of the hole in the front template of the injection molding machine with different tonnage.

Drawings

FIG. 1 is a schematic cross-sectional view of a closure synchronous molding nozzle of the present invention in a closed state;

FIG. 2 is a schematic cross-sectional view of an intercepting synchronous molding nozzle of the present invention in an open state;

FIG. 3 is a schematic left-view structural diagram of a synchronous sealing nozzle for intercepting flow according to the present invention;

FIG. 4 is a schematic diagram of a right view of a synchronous sealing nozzle of the present invention;

wherein the reference symbols are:

the method comprises the following steps of 1-nozzle connecting flange, 2-nozzle middle seat, 3-material pipe connecting body, 4-middle seat connecting body, 5-glue injection runner, 6-glue sealing cavity, 7-valve sleeve, 8-compression nut, 9-glue sealing valve core, 10-glue sealing plug, 11-Y-shaped lever, 12-telescopic rod, 13-driving mechanism, 14-fixing flange, 15-first heating ring, 16-second heating ring, 17-compression nut, 18-temperature sensing probe, 19-positioning pin and 20-fixing flange.

Detailed Description

The present invention will be described in detail and specifically with reference to the following examples to facilitate better understanding of the present invention, but the following examples do not limit the scope of the present invention.

Referring to fig. 1 and fig. 2, fig. 1 is a schematic cross-sectional view of an intercepting synchronous sealing glue nozzle in a state to be completely closed, and when a glue injection valve core is in a closed state, an injection molding machine can perform other actions such as glue dissolving, mold opening, ejection and the like; and fig. 2 is a schematic sectional view of the closure synchronous molding nozzle in an open state, at which time the injection molding machine can perform injection and retraction. The embodiment provides a synchronous sealing glue that dams and penetrates and chew, including penetrating and chewing, penetrate and chew flange 1, penetrate and chew seat in 2, a material pipe connector 3 and one set up in penetrate and chew 2 outsides and rather than the power component of syntropy arrangement, use the one end that is close to injection mold as the distal end in this embodiment to keep away from the near-end of injection mold's one end. Compared with the injection molding machine which is basically formed by melting glue and then opening the mold in the current market, the glue sealing nozzle cancels the sol cooling time and solves the problem of slow production period caused by long sol time.

As shown in fig. 1, a glue injection flow passage 5 is formed in the injection nozzle middle seat 2 along the axial direction thereof, the proximal end of the glue injection flow passage 5 is communicated with the inner hole of the material pipe connector 3, and the distal end is communicated with the inner hole of the injection nozzle connecting flange 1; a glue sealing cavity 6 communicated with the glue injection runner 5 is formed in the radial direction of the glue injection runner 5, the glue sealing cavity 6 is arranged perpendicular to the glue injection runner 5, and a glue sealing valve core 9 is movably arranged in the glue sealing cavity 6; the bottom end of the glue sealing valve core 9 is connected with the power assembly, and the top end of the glue sealing valve core is communicated with or blocked from the glue injection runner 5 under the driving of the power assembly. The power assembly is adopted to push the glue sealing valve core 9 to block the flow of the molten plastic in the glue injection runner 5, so that the problem that glue is easy to overflow when the injection molding machine is used for dissolving glue is solved, the product quality can be improved, the production stability is improved, the production period can be obviously accelerated, and the injection molding machine can simultaneously perform other actions such as mold opening, ejection, mold closing and the like while dissolving the glue.

In this embodiment, please refer to fig. 1, in order to effectively improve the sealing effect, the sealing cavity 6 is disposed in an inclined manner with respect to the glue injection runner 5, so that the top end of the sealing valve core 9 is inclined toward the distal end of the glue injection runner 5, an inclination angle of the sealing valve core 9 with respect to the glue injection runner 5 is 75-90 °, and preferably, an inclination angle of the sealing valve core 9 with respect to the glue injection runner 5 is 80 °.

In the present embodiment, please refer to fig. 1, in order to ensure that the sealant valve core 9 can completely block the flow of the sol in the sealant injecting flow channel 5, a sealant plug 10 matched with the top end of the sealant valve core 9 is embedded in the inner wall of the sealant injecting flow channel 5, and the sealant plug 10 is fixed in the mounting groove of the inner wall of the sealant injecting flow channel 5 through a positioning pin 19.

In the present embodiment, please refer to fig. 1 and 2, the glue injection channel 5 is composed of a proximal section, a middle section and a distal section, wherein: the diameter of the proximal end section is equal to that of the feeding pipe connecting body 3, the diameter of the proximal end section is larger than that of the distal end section, the diameter of the distal end section is larger than that of the middle section, and two ends of the middle section are in smooth transition with the proximal end section and the middle section respectively.

In the present embodiment, please refer to fig. 1, the sealing compound valve element 9 reciprocates up and down in the sealing compound cavity 6 during the process of blocking or opening the glue injection flow channel 5, so as to reduce the moving resistance of the sealing compound valve element 9 and prevent the sealing compound valve element 9 from being blocked due to the pouring of the sol into the sealing compound cavity 6. A valve sleeve 7 is embedded at the top end of the sealing glue cavity 6, a sealing ring is embedded on the inner wall of the valve sleeve 7 and is in sealing fit with the sealing glue valve core 9, and a wear-resistant, high-temperature-resistant and corrosion-resistant coating is coated on the surface of the sealing glue valve core 9. And a compression nut 8 is arranged at the bottom end of the sealing glue cavity 6 in an internal thread mode, the inner hole of the compression nut 8 and the bottom end of the sealing glue valve core 9 are designed to be large in one end and small in the other end, after the sealing glue valve core 9 is assembled in the valve sleeve 7 in a sliding mode, the compression nut 8 is assembled at the bottom end of the sealing glue cavity 6 to compress the valve sleeve 7, the compression nut 8 plays a limiting role in limiting the sealing glue valve core 9 at the same time, and the sealing glue valve core 9 is prevented from falling off from the sealing glue cavity 6. When the sealing glue valve core 9 and the valve sleeve 7 or the sealing glue plug 10 are worn after long-term use, the sealing glue valve core and the valve sleeve can be worn again or replaced independently, the replacement is simple and convenient, and the equipment maintenance cost is low.

In this embodiment, please refer to fig. 1 and 2, the power assembly includes: the top end of one side of the Y-shaped lever 11 is hinged to the jet nozzle middle seat 1, and the top end of the other side of the Y-shaped lever is abutted to the bottom end of the sealing glue valve core 9; and the telescopic rod 12 of the driving mechanism 13 is hinged with the bottom end of the Y-shaped lever 11. The driving mechanism 13 can be in a pneumatic, hydraulic or electric form, such as a telescopic cylinder, a telescopic oil cylinder or an electric push rod, according to actual production needs. Preferably, in order to ensure the stability of the operation of the intercepting synchronous sealing glue nozzle, the driving mechanism 13 adopts a telescopic oil cylinder, a high-temperature-resistant and wear-resistant sealing ring combination is adopted in the oil cylinder, and a cooling water path is designed on the cylinder body, so that the service lives of the oil cylinder and the sealing piece can be effectively prolonged. According to the requirement, the inner diameter of the adopted telescopic cylinder or telescopic oil cylinder is 25mm-150 mm.

In this embodiment, referring to fig. 1 and fig. 2, the intercepting synchronous sealing glue nozzle further includes: a nozzle connecting flange 1 arranged at the far end of the nozzle middle seat 2; and the injection nozzle is arranged at the far end of the injection nozzle connecting flange 1. Penetrate and chew flange 1 with it is equipped with first heating circle 15 to penetrate to overlap on the periphery wall of 2 distal ends of chewing the well seat, first heating circle 15 adopts ceramic heating circle, penetrate to inlay on the outer wall of 2 of chewing the well seat and be equipped with first temperature sensing probe 18, and 5 inner walls of injecting glue runner are equipped with and are used for fixing seal glue end cap 10's locating pin 19. And the closure synchronous sealing glue nozzle also comprises: a material pipe connector 3 arranged at the near end of the nozzle middle seat 2; and a middle seat connecting body 4 for connecting the injection nozzle middle seat 2 and the material pipe connecting body 3. The near-end of seat 2 in the injection nozzle with the cover is equipped with second heating ring 16 on the periphery wall of well seat connector 4, second heating ring 16 adopts ceramic heating ring. Two heating rings 14 and 15 are assembled at two ends of the injection nozzle middle seat 2, a temperature sensing probe 18 is arranged on the injection nozzle middle seat 2, and another temperature sensing probe (not shown in the figure) is arranged on the injection nozzle, so that the temperature of the whole set of sealing glue injection nozzle is ensured to be more uniform and stable.

In this embodiment, referring to fig. 3 and 4, the intercepting synchronous sealing glue nozzle further includes: a fixing flange 14 which is tightly pressed and assembled on the middle seat connecting body 4 through a pressing nut 17, wherein the fixing flange 14 is fixedly connected with the driving mechanism 13 through a supporting frame 20.

In the embodiment, the length and the size of the injection nozzle 1 and the needle valve 6 can be designed according to the size of a hole in a front template of an injection molding machine with different tonnages, specifically, the length of the injection nozzle 1 is 30-500mm, the outer diameter is 35-200mm, and the aperture of a glue injection port is 5-50 mm; preferably, the length of the injection nozzle 1 is 100-500mm, the outer diameter is 80-200mm, and the aperture of the glue injection opening is 15-50 mm; more preferably, the length of the injection nozzle 1 is 350-450mm, the outer diameter is 150-200mm, and the aperture of the glue injection port is 35-50 mm. The length of the injection nozzle middle seat 2 is 65-300 mm; preferably, the length of the injection nozzle middle seat 2 is 100-300 mm; more preferably, the length of the seat 2 in the nozzle is 250-300 mm. The screw rod forming machine can be used on a horizontal injection molding machine and a vertical injection molding machine, is particularly suitable for machines with large-tonnage and large-diameter screw rods, and has wide applicable machine types.

Referring to fig. 1 and fig. 2, the principle of the intercepting synchronous sealing compound nozzle of the present embodiment is as follows:

as shown in fig. 2, the material tube connector 3 is mounted on the material tube or the material tube flange, the driving mechanism 13 drives the telescopic rod 12 to retreat, at this time, the glue sealing valve core 9 is not acted by the Y-shaped lever 11, the glue sealing valve core 9 is forced to retreat to open the passage of the glue injection runner 5 in the glue sealing cavity 6 with pressure difference by the plastic acting force of the flowing completely, the melted plastic reaches the nozzle inner hole connected with the far end of the nozzle connecting flange 1 through the material tube connector and the glue injection runner 5 in the nozzle middle seat 2, and finally the melted plastic is forced to enter the mold under strong injection pressure, so as to manufacture the desired product;

as shown in fig. 1, after the injection is completed, the screw rod is immediately drawn back to reduce the pressure inside the nozzle and in the mold runner, and then the machine outputs hydraulic oil to the oil cylinder through the oil valve, so that the telescopic rod 12 of the driving mechanism 13 moves forward, and the glue sealing valve core 9 is pushed by the Y-shaped lever 11 until the glue sealing valve core is completely attached to the inclined surface of the glue sealing plug 10, thereby achieving the purpose of blocking the whole glue injection runner 5; at the moment, the screw can perform sol, and the mold can also perform synchronous actions such as mold opening, ejection, mechanical arm taking out, mold closing and the like.

The embodiments of the present invention have been described in detail, but the embodiments are merely examples, and the present invention is not limited to the embodiments described above. Any equivalent modifications and substitutions to those skilled in the art are also within the scope of the present invention. Accordingly, equivalent changes and modifications made without departing from the spirit and scope of the present invention should be covered by the present invention.