CN211917633U

CN211917633U - Pressure-maintaining and pressurizing anti-flow device of injection structure of injection molding machine

Info

Publication number: CN211917633U
Application number: CN201922468306.0U
Authority: CN
Inventors: 李正峰; 谭艳雄; 李尊; 张仁初
Original assignee: Guangdong Forstar Precision Machine Co ltd
Current assignee: Guangdong Forstar Precision Machine Co ltd
Priority date: 2019-12-31
Filing date: 2019-12-31
Publication date: 2020-11-13
Anticipated expiration: 2029-12-31

Abstract

The utility model relates to an injection molding machine accessory equipment field specifically is injection molding machine penetrates gluey structure pressurize pressure boost and prevents flowing device. The purpose is to solve the problems of long injection molding cycle time, unsatisfactory pressure maintaining effect, high defective product rate and no pressurization function of the conventional injection molding machine. The hydraulic control valve comprises a first main body and a second main body, wherein a first fluid hole is formed in the first main body, a second fluid hole is formed in the upper portion of the first main body, a first adjusting hole is formed in the first main body, a first valve core in liquid seal with the first adjusting hole is arranged in the first adjusting hole, a third fluid hole is formed in the middle of the first valve core, a first hydraulic device is arranged at one end of the first adjusting hole, a second main body fixedly connected with the first main body is arranged outside the second fluid hole in the first main body, a second adjusting hole is formed in the second main body, the second adjusting hole and the second fluid hole are located in the same axis, a second valve core in liquid seal is arranged inside the second adjusting hole, and a second hydraulic device is arranged at the other end of the second adjusting hole.

Description

Pressure-maintaining and pressurizing anti-flow device of injection structure of injection molding machine

Technical Field

The utility model relates to an injection molding machine accessory equipment field specifically is injection molding machine penetrates gluey structure pressurize pressure boost and prevents flowing device.

Background

An injection molding machine is a main molding device for manufacturing various plastic parts by using thermoplastic plastics or thermosetting plastics. The injection molding machine generally works as follows: granular or powder plastic is fed into a heated glue melting cylinder with a certain temperature from a hopper of an injection molding machine, is heated and melted to be in a flowing state, is pushed by a hydraulic motor and a screw to pass through a nozzle at the front end of the glue melting cylinder, is injected into a mold with a lower temperature, and is cooled and solidified under the condition of being pressed to form a plastic product. In the processing process of the injection molding machine, in order to ensure the quality of an injection molding workpiece, after the injection molding machine finishes the injection process, a screw in a melt rubber cylinder of the injection molding machine still needs to continuously maintain the pressure to finish the pressure maintaining process, and only after the pressure maintaining process is finished, the next step can be carried out to continuously melt rubber to prepare for the next injection molding period. With the technical progress, a separate injection molding machine has a slight pressure maintaining function at present, but the existing injection molding machine still has the following defects:

1. the injection molding period is long, and the production efficiency is low;

2. when the injection molding machine is used for injecting the glue to produce products, the pressure is maintained by the operation of the hydraulic motor, the power of the hydraulic motor is high, the energy consumption is high, the transmission distance is too long, the pressure maintaining effect is unsatisfactory, the products are easy to have bubbles, unqualified products are scrapped, and resources are wasted.

3. When the injection structure of the injection molding machine injects glue, the glue injection holes in the glue injection cylinder are straight, so that the glue is melted while overflowing, discharged objects pollute the environment, the plastic is only treated as waste, and the plastic is not decomposed for hundreds of years. The gas emitted after the plastic is dissolved can pollute the atmospheric environment, and does not meet the national requirements of energy conservation and emission reduction. The plastic waste gas is sucked to cause damage to the body and seriously affect the health of personnel, and in order to solve the problem, an air extractor is additionally arranged above each machine and is transported to a gas collection room through a pipeline, and then the gas is filtered and discharged outdoors, so that a large amount of cost, manpower and material resources are increased.

4. The existing product only has no supercharging function.

5. High cost and cannot synchronously solve a plurality of problems.

Disclosure of Invention

The utility model aims to solve the problems of long injection molding period and low production efficiency of the existing injection molding machine; meanwhile, the pressure maintaining effect is not ideal, the energy consumption is high, the defective product rate is high, resources are wasted, the glue injection hole of the injection molding machine glue melting cylinder is easy to overflow, the environment is polluted, the air exhaust device is additionally arranged, a large amount of cost, manpower and material resources are increased, and the existing product only has no pressurizing function and is single in function.

In order to solve the technical problem, the pressure-maintaining and pressure-increasing anti-flowing device of the injection molding machine injection structure of the utility model is characterized by comprising a first main body, wherein a first fluid hole is arranged inside the first main body, the first main body is provided with a flow inlet end and a flow outlet end which are arranged at two ends of the first fluid hole, and a second fluid hole which is arranged above the first main body and is communicated with the first fluid hole, a first adjusting hole which is horizontally communicated with the first main body in a direction crossed with the first fluid hole is arranged inside the first main body, a first valve core which is in liquid seal with the first adjusting hole is arranged inside the first adjusting hole, a third fluid hole which has the same size as the first fluid hole is arranged in the middle of the first valve core, one end of the first adjusting hole is provided with a first hydraulic device which is positioned at the same axis as the position of the first adjusting hole and is fixedly connected with the first main body, a second main body which is fixedly connected with the first main body is arranged outside the second fluid hole, the second main body is internally provided with a second adjusting hole which penetrates through the second main body and is communicated with the second fluid hole, the second adjusting hole and the second fluid hole are in the same axis, a second valve core which is in liquid seal with the second adjusting hole is arranged in the second adjusting hole, and the other end of the second adjusting hole is provided with a second hydraulic device which is in the same axis with the position of the second adjusting hole and is fixedly connected with the second main body.

As the utility model discloses injection molding machine penetrates gluey structure pressurize pressure boost and prevents a preferred embodiment of class device, the both ends of first case be equipped with recessed first piston rod connecting hole and first baffle spread groove respectively.

As the utility model discloses the injection molding machine penetrates a preferred embodiment of gluey structure pressurize pressure boost and prevents class device, the influent stream end is equipped with fixed connection's connection pad.

As the utility model discloses injection molding machine penetrates gluey structure pressurize pressure boost and prevents a preferred embodiment of class device, first hydraulic means includes first cylinder body to and fixed connection is in the first protecgulum and the first back lid at first cylinder body both ends, and wherein the first back lid is equipped with first hydraulic pressure pipe connecting hole, first protecgulum and first main part fixed connection, including liquid seal's first piston and first piston rod in the first cylinder body, first piston and first piston rod are in same axle center with the first piston rod connecting hole of first case, first piston rod and first piston rod connecting hole fixed connection.

As the utility model discloses injection molding machine is penetrated gluey structure pressurize pressure boost and is prevented a preferred embodiment of class device, still include with first main part fixed connection's first cooling piece and first heat insulating board, first hydraulic means is through first cooling piece and first heat insulating board and first main part fixed connection.

As the utility model discloses injection molding machine penetrates a gluey structure pressurize pressure boost and prevents a preferred embodiment of class device, the other end of first regulation hole is equipped with the support piece that the cross section is "n" font, and this support piece is in the position of neighbouring first baffle connecting groove, the support piece surface is equipped with two at least slide openings, still includes two at least and first main part fixed connection's guide bar, and this guide bar is in same axle center with support piece's slide opening, support piece passes through guide bar and first main part fixed connection.

And a valve core guide plate which is connected with the guide rod in a sliding manner and fixedly connected with the first valve core is arranged in the supporting piece.

As a preferred implementation scheme of the pressure-maintaining and pressurizing anti-flow device of the injection molding machine glue injection structure, the valve core guide plate is provided with a second guide plate connecting groove, and the first guide plate connecting groove is matched with the second guide plate connecting groove;

the valve core connecting piece is characterized by further comprising a guide plate connecting piece, wherein the guide plate connecting piece is positioned in the first guide plate connecting groove and the second guide plate connecting groove and fixedly connected with the valve core guide plate and the first valve core.

As the utility model discloses the injection molding machine is penetrated gluey structure pressurize pressure boost and is prevented a preferred embodiment of class device, the rear end of this second case is equipped with recessed second piston rod connecting hole.

As a preferred embodiment of the pressure maintaining and pressurizing anti-flow device of the injection molding machine injection structure of the utility model, the second hydraulic device comprises a second cylinder body, a second front cover and a second rear cover which are fixedly connected with the two ends of the second cylinder body, wherein the second rear cover is provided with a second hydraulic pipe connecting hole, the second front cover is fixedly connected with the second main body,

the second cylinder body comprises a second piston and a second piston rod which are sealed by liquid,

the second piston and the second piston rod are positioned in the same axis with a second piston rod connecting hole of the second valve core, and the second piston rod is fixedly connected with the second piston rod connecting hole.

As the utility model discloses injection molding machine penetrates gluey structure pressurize pressure boost and prevents a preferred embodiment of class device, still include with second main part fixed connection's second cooling piece and second heat insulating board, second hydraulic means passes through second connecting block and second heat insulating board and second main part fixed connection.

Advantageous effects

The utility model discloses the technique has following innovation advantage:

1. the integral design slows down the time of each injection molding cycle, so that the working efficiency is improved;

2. first main part and the first case and the first hydraulic means of its inside first regulation hole outside make wholly make things convenient for the fluid of opening or closing first fluid hole, make the convenient pressurize of production process, played simultaneously and prevented that the limit melten gel from overflowing and causing the problem of polluted environment, melten gel section of thick bamboo can carry out the melten gel work on next step simultaneously, has reduced the manual work and the cost of production in the lump, has accomplished to solve multinomial problem simultaneously.

3. The existing product only has no supercharging function, but the second main body of the utility model and the parts related to the second main body play the supercharging function; when the first valve core of the first main body closes the first fluid hole for pressure maintaining, the second valve core of the second main body can be used for extruding the fluid inside, so that the pressure maintaining effect is integrally achieved.

4. The utility model discloses the part is few, nevertheless possesses multinomial function simultaneously, practices thrift the cost.

Drawings

FIG. 1 is an overall perspective view of the present invention;

FIG. 2 is an enlarged partial view of the area "A" in FIG. 1;

FIG. 3 is an isolated perspective view of the detail in the area "B" of FIG. 2;

FIG. 4 is a partial exploded effect diagram of FIG. 3;

FIG. 5 is an exploded effect diagram of the "C" zone component of FIG. 4;

FIG. 6 is an exploded effect diagram of the "D" zone component of FIG. 4;

FIG. 7 is an internal cross-sectional view of the "C" area assembly of FIG. 4;

FIG. 8 is an enlarged fragmentary view of the area "E" in FIG. 7;

FIG. 9 is an enlarged fragmentary view of the area "F" in FIG. 7;

FIG. 10 is an internal cross-sectional view of the "D" area assembly of FIG. 4;

FIG. 11 is an enlarged fragmentary view of the area "G" in FIG. 10;

FIG. 12 is an enlarged fragmentary view of the region "H" in FIG. 10;

figure 13 is an individual perspective view of a component of the "first valve cartridge" of the present invention;

in the figure: 1. a first fluid hole, 2, a first body, 3, a second body, 4, a second fluid hole, 5, a third fluid hole, 6, an inlet end, 7, an outlet end, 8, a first regulation hole, 9, a second regulation hole, 10, a first valve core, 11, a second valve core, 12, a first hydraulic device, 13, a second hydraulic device, 14, a first piston rod connection hole, 15, a first guide plate connection groove, 16, a connection plate, 17, a second piston rod connection hole, 18, a second guide plate connection groove, 19, a first cylinder body, 20, a first front cover, 21, a first rear cover, 22, a first piston, 23, a first piston rod, 24, a first hydraulic pipe connection hole, 25, a second hydraulic pipe connection hole, 26, a first cooling member, 27, a first cooling member, 28, a second cooling member, 29, a second cooling member, 30, a support member, 31, a slide hole, 32, a guide rod, 33, a valve core guide plate, 34. guide plate connecting piece, 35, second cylinder body, 36, second front cover, 37, second rear cover, 38, second piston, 39, second piston rod and 40, melt glue cylinder.

Detailed Description

The present invention will be further explained with reference to the drawings and examples.

As shown in fig. 1 to 13, the utility model discloses a pressure-maintaining and pressure-increasing anti-flow device of an injection molding machine injection structure, including an injection mechanism body of an injection molding machine, firstly the utility model discloses a first main body 2, the inside of the first main body 2 is provided with a first fluid hole 1, the two ends of the first main body 2, namely the two ends of the first fluid hole 1 are respectively provided with an outflow end 7 and an inflow end 6 for connecting other devices, the end of the inflow end 6 is provided with a connecting disc 16 for fixed connection, which is used for connecting the first main body 2 with a glue-melting cylinder 40 of the injection mechanism of the injection molding machine, and is used for transmitting the fluid after glue-melting into the first fluid hole 1 in the first main body 2; a second fluid hole 4 penetrating the first fluid hole 1 is formed above the first body 2, and is used for transmitting the fluid entering from the inlet end 6 to the first fluid hole 1 and the second fluid hole 4, a first adjusting hole 8 crossing the first fluid hole 1 and horizontally penetrating the first body 2 is formed in the first body 2, and the first adjusting hole 8 is used for adjusting the opening or closing of the fluid entering from the inlet end 6 into the first fluid hole 1, and the implementation mode is as follows: a first valve core 10 which is in liquid seal with the first adjusting hole 8 is arranged in the first adjusting hole 8, and a third fluid hole 5 with the same size as the first fluid hole 1 is formed in the middle of the first valve core 10, so that the fluid channel of the first fluid hole 1 can be opened or closed by adjusting the first valve core 10 up and down; meanwhile, a concave first piston connecting hole 14 and a first guide plate connecting groove 15 are respectively arranged at two ends of the first valve core 10;

a first hydraulic device 12 which is arranged at one end of the first adjusting hole 8 and is positioned in the direction of the first piston connecting hole 14 and is positioned at the same axial lead with the position of the first adjusting hole 8, the first hydraulic device 12 firstly comprises a first cylinder 19 with a hollow inner part, and a first front cover 20 and a first rear cover 21 fixedly coupled to upper and lower ends of the first cylinder 19, the first rear cover 21 is provided with a first hydraulic pipe connecting hole 24 for connecting an external hydraulic pipe, and further comprises a first piston 22 and a first piston rod 23 which are arranged in the first cylinder 19 and are in hydraulic seal with the first cylinder, the first piston 22 and the first piston rod 23 are in the same axle center with the first piston rod connecting hole 14 of the first valve core 10, the first piston rod 23 is fixedly connected with the first piston rod connecting hole 14 in a threaded connection or a welding manner, so that the up-and-down adjustment of the first valve core 10 is controlled by the first hydraulic device 12; meanwhile, in order to play a role of heat protection, the hydraulic device further comprises a first cooling element 26 and a first heat insulation plate 27 which are fixedly connected with the first main body 2, wherein the first front cover 20 of the first hydraulic device 12, the first cooling element 26 and the first heat insulation plate 27 are mutually overlapped and fixedly connected, and then the first cooling element 26 and the first heat insulation plate 27 are fixedly connected with the first main body 2;

a supporting member 30 with an n-shaped cross section is arranged at the other end of the first adjusting hole 8, namely in the direction of the first guide plate connecting groove 15, and the supporting member 30 is used for accommodating the bottom of the first bag valve core 10 when the first hydraulic device 12 pushes the first valve core 10 downwards, so that the whole body is more stable; the surface of the supporting member 30 is provided with at least two sliding holes 31 (or more), and further includes at least two guiding rods 32 fixedly connected with the first body 2, the guiding rods 32 are fixedly connected with the first body 2 through threads or fixedly connected through welding, and the positions of the guiding rods 32 are: the support 30 is fixedly connected with the first body 2 through the guide rod 32, the guide rod 32 plays a role of fixing the support 30, and the size of the support 30 can be selected to be proper in length or height according to actual requirements; a valve core guide plate 33 which is connected with the guide rod 32 in a sliding manner and fixedly connected with the first valve core 10 is also arranged in the support member 30, the valve core guide plate 33 takes the guide rod 32 as a sliding track and can only slide up and down in the support member 30, so that the first valve core 10 is not easy to shake or the direction is prevented from changing, meanwhile, a second guide plate connecting groove 18 with the same width as the first guide plate connecting groove 15 is arranged on the surface of the valve core guide plate, and the first guide plate connecting groove 15 and the second guide plate connecting groove 18 are matched, overlapped, fixedly connected during installation; the valve core connecting structure further comprises a guide plate connecting piece 34, wherein the guide plate connecting piece 34 is positioned in the first guide plate connecting groove 15 and the second guide plate connecting groove 18 and is fixedly connected with the valve core guide plate 33 and the first valve core 10 through screws, and the guide plate connecting piece can also be fixedly connected with the valve core guide plate 33 and the first valve core 10 through welding;

the first body 2 is also provided with a second body 3 fixedly connected with the first body 2 outside the second fluid hole 4, a second adjusting hole 9 which penetrates through the second main body 3, is communicated with the second fluid hole 4 and is positioned at the same axis with the second fluid hole 4 is arranged in the second main body 3, for the fluid entering from the inlet end 6 to pass to the inside of the second fluid hole 4 and the second regulation hole 9, a second valve core 11 which is in hydraulic seal with the second adjusting hole 9 is arranged in the second adjusting hole 9, and a second hydraulic device 13 which is positioned at the same axis as the second adjusting hole 9 and is fixedly connected with the second main body 3 is arranged at the other end of the second adjusting hole 9, so that the second valve core 11 can be pushed forwards or backwards in the second adjusting hole 9 under the action of the second hydraulic device 13, and the fluid in the second fluid hole 4 can be applied or reduced in pressure; the rear part of the second valve core is further provided with a recessed second piston rod connecting hole 17, meanwhile, the second hydraulic device 13 further comprises a second cylinder 35, a second front cover 36 and a second rear cover 37 which are fixedly connected to two ends of the second cylinder 35, wherein the second rear cover 37 is provided with a second hydraulic pipe connecting hole 25, the second cylinder 35 internally comprises a second piston 38 and a second piston rod 39 which are sealed in a liquid manner, the second piston 38 and the second piston rod 39 are positioned at the same axis as the second piston rod connecting hole 17 of the second valve core 11, and the second piston rod 39 is fixedly connected with the second piston rod connecting hole 17 or is connected with the second piston rod connecting hole 17 through welding; the second hydraulic device further comprises a second cooling element 28 and a second heat insulation plate 29 fixedly connected with the second body 3, and a second front cover 36 of the second hydraulic device 13 is fixedly connected with the second body through a second connecting block and 28 and the second heat insulation plate 29.

The using method comprises the following steps: when a melt adhesive cylinder 40 of an adhesive injection mechanism of an injection molding machine transmits molten plastic fluid to the outside through a first fluid hole 1 of a first main body and an outflow end 7, a first hydraulic device 12 of the first main body is controlled to enable a first piston 22 of the first main body to control the first valve core 10 to advance or retreat through a first piston rod 23, so that a third fluid hole 5 of the first valve core 10 is separated from the same axis with the first fluid hole 1 and is not overlapped, the first fluid hole 1 is closed, and an external injection mold can play a role in maintaining pressure; meanwhile, the plastic in the glue melting cylinder 40 can be melted continuously, so that the working efficiency is improved; meanwhile, the second hydraulic device 13 of the second body 3 controls the second valve core 11 to move forward and backward through the second piston rod 39 of the second piston 38, so that when the second valve core is pushed forward, the fluid in the second adjusting hole 9 and the fluid in the second fluid hole 4 can be squeezed, the fluid pressure is increased, the fluid pressure of the whole die equipment connected in the first fluid hole 1 and the second fluid hole 4 and outside the outflow end 7 is increased, and the probability of producing unqualified products by the whole injection molding machine is reduced again or the yield is improved.

The use of "first," "second," and similar terms in the description and in the claims does not indicate any order, quantity, or importance, but rather is used to distinguish one element from another. Also, the use of the terms "a," "an," or "the" and similar referents do not denote a limitation of quantity, but rather denote the presence of at least one. The word "comprise" or "comprises", and the like, means that the element or item listed before "comprises" or "comprising" covers the element or item listed after "comprising" or "comprises" and its equivalents, and does not exclude other elements or items. "upper", "lower", "left", "right", and the like are used merely to indicate relative positional relationships, and when the absolute position of the object being described is changed, the relative positional relationships may also be changed accordingly.

The above-mentioned preferred embodiments of the present invention are not intended to limit the present invention, the protection scope of the present invention is defined by the appended claims, and any modification based on the claims of the present invention is the protection scope of the present invention.

Claims

1. The pressure-maintaining pressurizing anti-flow device of the injection molding machine injection structure is characterized by comprising a first main body, wherein a first fluid hole is formed in the first main body, the first main body is provided with a flow inlet end and a flow outlet end which are positioned at two ends of the first fluid hole, and a second fluid hole which is positioned above the first main body and penetrates through the first fluid hole, a first adjusting hole which horizontally penetrates through the first main body in a direction intersecting with the first fluid hole is formed in the first main body, a first valve core which is in liquid seal with the first adjusting hole is arranged in the first adjusting hole, a third fluid hole which is equal to the first fluid hole in size is arranged in the middle of the first valve core, one end of the first adjusting hole is provided with a first hydraulic device which is positioned at the same axis as the first adjusting hole and is fixedly connected with the first main body, a second main body which is fixedly connected with the first main body is arranged outside the second fluid hole, a second adjusting hole which penetrates through the second main body and is communicated with the second fluid hole is arranged in the second main body, the second adjusting hole and the second fluid hole are positioned in the same axis, a second valve core which is in liquid seal with the second adjusting hole is arranged in the second adjusting hole,

and the other end of the second adjusting hole is provided with a second hydraulic device which is positioned at the same axis as the second adjusting hole and is fixedly connected with the second main body.

2. The pressure maintaining and pressurizing flow-preventing device for the injection structure of the injection molding machine according to claim 1, wherein both ends of the first valve core are respectively provided with a first piston rod connecting hole and a first guide plate connecting groove which are recessed.

3. The pressure-maintaining and pressure-increasing anti-flow device for the injection structure of the injection molding machine according to claim 1, wherein the inflow end is provided with a connecting disc fixedly connected.

4. The injection molding machine injection structure pressure maintaining and pressurizing flow-preventing device of claim 1 or 2, wherein the first hydraulic device comprises a first cylinder, a first front cover and a first rear cover fixedly connected to two ends of the first cylinder, wherein the first rear cover is provided with a first hydraulic pipe connecting hole, the first front cover is fixedly connected to the first main body,

the first cylinder body is internally provided with a first piston and a first piston rod which are sealed in a liquid mode, the first piston and the first piston rod are located in the same axis with a first piston rod connecting hole of the first valve core, and the first piston rod is fixedly connected with the first piston rod connecting hole.

5. The injection molding machine injection structure pressure maintaining, pressurizing and flow preventing device of claim 4, further comprising a first cooling element and a first heat insulating plate fixedly connected with the first body, wherein the first hydraulic device is fixedly connected with the first body through the first cooling element and the first heat insulating plate.

6. The injection molding machine injection structure pressure maintaining and pressurizing flow-preventing device of claim 1 or 2, wherein the other end of the first adjusting hole is provided with a support member having an "n" shaped cross section, the support member is located adjacent to the first guide plate connecting groove, the surface of the support member is provided with at least two sliding holes, the injection molding machine injection structure pressure maintaining and pressurizing flow-preventing device further comprises at least two guide rods fixedly connected with the first body, the guide rods are coaxial with the sliding holes of the support member, the support member is fixedly connected with the first body through the guide rods,

7. The pressure maintaining and pressurizing flow prevention device for the injection structure of the injection molding machine according to claim 6, wherein the valve core guide plate is provided with a second guide plate connecting groove, and the first guide plate connecting groove is matched with the second guide plate connecting groove;

8. The injection molding machine injection structure pressure maintaining and pressurizing flow prevention device of claim 1, wherein the rear end of the second valve core is provided with a recessed second piston rod connection hole.

9. The injection molding machine injection structure pressure maintaining and pressurizing anti-flow device of claim 1 or 8, wherein the second hydraulic device comprises a second cylinder, and a second front cover and a second rear cover fixedly connected to two ends of the second cylinder, wherein the second rear cover is provided with a second hydraulic pipe connecting hole, the second front cover is fixedly connected to the second main body,

10. The injection molding machine injection structure pressure maintaining, pressurizing and flow preventing device of claim 9, further comprising a second cooling element and a second heat insulating plate fixedly connected with the second body, wherein the second hydraulic device is fixedly connected with the second body through a second connecting block and the second heat insulating plate.