CN112297369B

CN112297369B - Injection molding machine injection platform and injection molding machine

Info

Publication number: CN112297369B
Application number: CN202011114822.4A
Authority: CN
Inventors: 黎秀郁; 莫玉麟; 赵永政; 宋佳庆; 孟萌
Original assignee: Gree Electric Appliances Inc of Zhuhai; Zhuhai Gree Intelligent Equipment Co Ltd
Current assignee: Gree Electric Appliances Inc of Zhuhai; Zhuhai Gree Intelligent Equipment Co Ltd
Priority date: 2020-10-16
Filing date: 2020-10-16
Publication date: 2022-08-02
Anticipated expiration: 2040-10-16
Also published as: CN112297369A

Abstract

The invention provides an injection molding machine injection platform and an injection molding machine, wherein the injection molding machine injection platform comprises: a support frame; the lead screw nut assembly is arranged on the support frame; the movable plate is movably arranged on the support frame along the axial direction of the screw nut component; the first bearing is arranged on the movable plate and moves along with the movable plate; the plasticizing driven wheel is connected with the outer ring of the first bearing to synchronously move with the outer ring of the first bearing, and is in transmission connection with a feeding screw of an injection molding machine; the glue injection driven wheel is connected with the inner ring of the first bearing to synchronously move with the inner ring of the first bearing, and the glue injection driven wheel is connected with a glue injection screw rod of the screw nut assembly to drive the glue injection screw rod to rotate. The injection platform of the injection molding machine solves the problem that the injection acceleration of the injection platform of the injection molding machine, in the prior art, of which a plasticizing motor and an injection motor both move along with the injection action is small.

Description

Injection molding machine injection platform and injection molding machine

Technical Field

The invention relates to the field of injection molding machines, in particular to an injection molding machine injection platform and an injection molding machine.

Background

The injection platform of the injection molding machine in the prior art mainly has two structural types, the first structural type is that a plasticizing driving part and an injection driving part move along with the injection action, because the movable mass is large, the injection device with the middle structural type is mainly applied to the occasions of low speed and low response; the second structure mode is that the plasticizing driving part moves along with the injection action, but the injection driving part does not move, and the injection driving part is mainly applied to high-speed and high-response occasions.

The injection platform of the injection molding machine with the first structure type has the advantages of low cost because a set of thrust bearing and matched parts are reduced compared with the injection platform of the injection molding machine with the second structure type.

However, in the injection molding machine injection table of the first structure type in the prior art, the plasticized driven wheel and the injection driven wheel are located at the front side of the movable plate, the bearing is used for bearing axial force, the plasticized driven wheel is connected to the transmission shaft matched with the inner ring of the bearing, and the injection driven wheel is connected to the bearing seat matched with the outer ring of the bearing and is opposite to the inside and the outside of the bearing, so that the minimum diameter of the injection driven wheel is also large, the inertia is large, the inertia sum of corresponding parts which rotate together with the injection driven wheel is also large, and the inertia of related parts is required by the injection action. The moment of inertia is the inertia of a rigid body resisting the rotary motion, under the condition that other conditions are not changed, the larger the moment of inertia is, the smaller the rotary acceleration is, and the slower the response speed of the injection action is, so that the injection acceleration of an injection table of the injection molding machine is smaller, and the production quality and the production efficiency of injection molding products are influenced.

Disclosure of Invention

The invention mainly aims to provide an injection molding machine injection table and an injection molding machine, and aims to solve the problem that in the prior art, the injection acceleration of the injection molding machine injection table is small, wherein a plasticizing motor and an injection motor both move along with the injection action.

In order to achieve the above object, according to one aspect of the present invention, there is provided an injection molding machine injection station including: a support frame; the screw-nut assembly is arranged on the support frame; the movable plate is movably arranged on the support frame along the axial direction of the screw nut component; the first bearing is arranged on the movable plate and moves along with the movable plate; the plasticizing driven wheel is connected with the outer ring of the first bearing to synchronously move with the outer ring of the first bearing, and is in transmission connection with a feeding screw of an injection molding machine; the glue injection driven wheel is connected with the inner ring of the first bearing to synchronously move with the inner ring of the first bearing, and the glue injection driven wheel is connected with a glue injection screw rod of the screw nut assembly to drive the glue injection screw rod to rotate.

Furthermore, the plasticizing driven wheel and the glue injection driven wheel are both arranged on one side of the movable plate close to the screw nut assembly.

Further, the injection molding machine injection platform still includes: the first driving part is arranged on the movable plate and moves along with the movable plate; the first driving part is in driving connection with the plasticizing driven wheel; a second driving part disposed on the movable plate to move with the movable plate; the second driving component is in driving connection with the glue injection driven wheel.

Further, the injection molding machine injection platform still includes: the inner ring of the first bearing is sleeved on the first rotating shaft, and the glue injection screw rod is connected with the first rotating shaft through the glue injection driven wheel.

Furthermore, the glue injection driven wheel is provided with a central hole, and an annular connecting part protruding out of the hole wall is arranged in the central hole of the glue injection driven wheel; the glue injection screw rod is provided with a first shaft section and an annular flange which are positioned in a central hole of the glue injection driven wheel, the annular flange protrudes out of the peripheral surface of the first shaft section, and the end surface of one side of the annular connecting part is abutted against the end surface of one side of the annular flange; the annular connecting part is provided with a first through hole, the annular flange is provided with a first connecting hole corresponding to the first through hole, and one end of the first rotating shaft, which is close to the glue injection screw rod, is provided with a second connecting hole corresponding to the first through hole so as to enable the first fastener to be sequentially arranged in the first connecting hole, the first through hole and the second connecting hole in a penetrating manner.

Further, the injection molding machine injection platform still includes: and the second rotating shaft is sleeved on the outer ring of the first bearing, and the plasticized driven wheel is connected with the feeding screw rod through the second rotating shaft.

Further, the injection molding machine injection platform still includes: and the first end cover is connected with the second rotating shaft and is used for being connected with the feeding screw rod so that the second rotating shaft is connected with the feeding screw rod through the first end cover.

Furthermore, a supporting step is arranged in the central hole of the second rotating shaft and is in contact with the first side of the outer ring of the first bearing so as to limit the first side of the outer ring of the first bearing; and/or the injection molding machine injection platform further comprises a second end cover, the second end cover is connected with the second rotating shaft, the second end cover is provided with a boss located in a central hole of the second rotating shaft, and the end face of the boss is in contact with the second side of the outer ring of the first bearing so as to limit the second side of the outer ring of the first bearing.

Furthermore, the injection molding machine injection platform also comprises a transition part, wherein the transition part is arranged between the second rotating shaft and the plasticizing driven wheel so that the plasticizing driven wheel is connected with the second rotating shaft through the transition part.

Furthermore, the transition part comprises a first circular ring part and a second circular ring part which are connected, and the first circular ring part is sleeved on the second circular ring part; the first circular ring part is provided with a second through hole, and the plasticized driven wheel is provided with a third connecting hole corresponding to the second through hole so that a second fastener penetrates through the second through hole and the third connecting hole; the second circular ring part is provided with a third through hole, the second end cover is provided with a fourth connecting hole corresponding to the third through hole, and one end of the second rotating shaft, which is close to the second end cover, is provided with a fifth connecting hole corresponding to the third through hole, so that the third fastener sequentially penetrates through the fourth connecting hole, the third through hole and the fifth connecting hole.

According to another aspect of the present invention, there is provided an injection molding machine comprising an injection molding machine injection station, the injection molding machine injection station being the injection molding machine injection station described above.

The invention provides an injection molding machine injection platform with a support frame, a screw nut component, a movable plate, a first bearing, a plasticized driven wheel and an injection driven wheel, wherein the screw nut component and the movable plate are arranged on the support frame, and the movable plate can move on the support frame along the axial direction of the screw nut component; the first bearing is arranged on the movable plate and moves along with the movable plate; the plasticizing driven wheel is connected with the outer ring of the first bearing to synchronously move with the outer ring of the first bearing, and is in transmission connection with a feeding screw of an injection molding machine; the glue injection driven wheel is connected with the inner ring of the first bearing to move synchronously with the inner ring of the first bearing, and is connected with the glue injection screw rod of the screw nut component to drive the glue injection screw rod to rotate and drive the movable plate to move on the support frame along the axis direction of the screw nut component under the action of the screw nut component. In the prior art, a plasticizing driven wheel is connected with a bearing inner ring, a glue injection driven wheel is connected with a bearing outer ring, parts such as the plasticizing driven wheel and a feeding screw rod need to be avoided, and the outer diameter of the glue injection driven wheel needs to be designed to be larger. In the invention, the plasticized driven wheel is connected with the outer ring of the first bearing, the rubber-injection driven wheel is connected with the inner ring of the first bearing, the outer diameter of the rubber-injection driven wheel can be made smaller, the rotational inertia is relatively smaller, the sizes of parts which rotate together with the rubber-injection driven wheel can be designed smaller, and the total rotational inertia of the parts is also smaller. The screw nut assembly converts the rotational motion into a linear motion to provide the motive force for the injection action, the rotational acceleration of which affects the acceleration of the injection action. Under the condition that other conditions are not changed, the rotational inertia is reduced, the rotational acceleration of the injection screw rod is improved, the response speed of the injection action is improved, namely the injection acceleration of the injection table of the injection molding machine is improved, the change of the injection speed is quicker and more efficient, the technical effects of improving the production quality and the production efficiency of injection molding products are achieved, and the problem that the injection acceleration of the injection table of the injection molding machine, in which a plasticizing motor and an injection motor both move along with the injection action, is smaller in the prior art is solved.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:

FIG. 1 shows a schematic structural view of an injection molding machine injection station according to an embodiment of the present invention;

FIG. 2 shows a front view of the injection station of the injection molding machine of FIG. 1;

FIG. 3 shows a cross-sectional view of the injection molding machine shot of FIG. 2 taken along direction A-A;

FIG. 4 shows a schematic structural view of a feed screw nut assembly in the injection station of the injection molding machine shown in FIG. 2;

FIG. 5 is a schematic view of a transition piece in one orientation in the injection station of the injection molding machine of FIG. 2;

FIG. 6 is a schematic view of a transition piece in the injection station of the injection molding machine of FIG. 2 in another orientation;

FIG. 7 is a schematic view showing the construction of a second rotary shaft in the injection molding machine stand shown in FIG. 2; and

fig. 8 shows a schematic representation of the forces exerted by the plasticized and injected driven wheels on the second bearing in the injection station of the injection molding machine of fig. 3.

Wherein the figures include the following reference numerals:

1. a support frame; 101. a group of support plates; 1011. shooting the rubber head plate; 1012. shooting a rubber tail plate; 102. a guide bar; 2. a first drive member; 201. a first mounting plate; 3. a second rotation shaft; 301. a first end cap; 302. a second end cap; 303. a transition member; 3031. a first circular ring portion; 3032. a second circular portion; 4. a first rotating shaft; 401. a third end cap; 402. fastening screws; 403. a first seal member; 404. a second seal member; 5. a first bearing; 6. a movable plate; 601. a plate body portion; 602. connecting columns; 603. a first mounting bracket; 604. a second mounting bracket; 605. a baffle plate; 7. a second bearing; 8. a plasticizing pulley assembly; 801. a plasticizing driving wheel; 802. plasticizing the driven wheel; 803. plasticizing the transmission belt; 9. a glue injection belt wheel assembly; 901. injecting glue driving wheel; 902. a glue injection driven wheel; 903. injecting a glue transmission belt; 10. a feed screw nut assembly; 1001. injecting a glue screw rod; 10011. a first shaft section; 10012. a second shaft section; 10013. an annular flange; 1002. injecting a glue nut; 11. a pressure detecting member; 12. a second drive member; 1201. a second mounting plate.

Detailed Description

It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.

As shown in fig. 1 to 7, the present invention provides an injection table of an injection molding machine, comprising: a support frame 1; the lead screw nut assembly 10 is arranged on the support frame 1, and the lead screw nut assembly 10 is arranged on the support frame 1; the movable plate 6 is movably arranged on the support frame 1 along the axial direction of the screw nut component 10; a first bearing 5, the first bearing 5 being disposed on the movable plate 6 to move with the movable plate 6; the plasticizing driven wheel 802 is connected with the outer ring of the first bearing 5 so as to synchronously move with the outer ring of the first bearing 5, and the plasticizing driven wheel 802 is used for being in transmission connection with a feeding screw of an injection molding machine; the glue injection driven wheel 902 is connected with the inner ring of the first bearing 5 so as to move synchronously with the inner ring of the first bearing 5, and the glue injection driven wheel 902 is connected with the glue injection screw rod 1001 of the screw nut assembly 10 so as to drive the glue injection screw rod 1001 to rotate.

The invention provides an injection molding machine injection platform with a support frame 1, a screw nut component 10, a movable plate 6, a first bearing 5, a plasticized driven wheel 802 and an injection driven wheel 902, wherein the screw nut component 10 and the movable plate 6 are installed on the support frame 1, and the movable plate 6 can move on the support frame 1 along the axial direction of the screw nut component 10; the first bearing 5 is disposed on the movable plate 6 to move with the movable plate 6; the plasticizing driven wheel 802 is connected with the outer ring of the first bearing 5 so as to synchronously move with the outer ring of the first bearing 5, and the plasticizing driven wheel 802 is used for being in transmission connection with a feeding screw of an injection molding machine; the glue injection driven wheel 902 is connected with the inner ring of the first bearing 5 to move synchronously with the inner ring of the first bearing 5, and the glue injection driven wheel 902 is connected with the glue injection lead screw 1001 of the lead screw nut assembly 10 to drive the glue injection lead screw 1001 to rotate and drive the movable plate 6 to move on the support frame 1 along the axial direction of the lead screw nut assembly 10 through the action of the lead screw nut assembly 10.

In the prior art, a plasticizing driven wheel is connected with a bearing inner ring, a glue injection driven wheel is connected with a bearing outer ring, parts such as the plasticizing driven wheel and a feeding screw rod need to be avoided, and the outer diameter of the glue injection driven wheel needs to be designed to be larger. In the invention, the plasticized driven wheel 802 is connected with the outer ring of the first bearing 5, and the injection driven wheel is connected with the inner ring of the first bearing 5, so that the outer diameter can be made smaller, the rotational inertia is relatively smaller, the sizes of parts which rotate together with the injection driven wheel 902 can be designed smaller, and the total rotational inertia of the parts is also smaller. The screw nut assembly converts the rotational motion into a linear motion to provide the motive force for the injection action, the rotational acceleration of which affects the acceleration of the injection action. Under the condition that other conditions are not changed, the rotational inertia is reduced, the rotational acceleration of the injection screw rod 1001 is improved, the response speed of injection action is improved, namely the injection acceleration of an injection table of the injection molding machine is improved, the change of the injection speed is quicker and more efficient, the technical effects of improving the production quality and the production efficiency of injection molding products are achieved, and the problem that the injection acceleration of the injection table of the injection molding machine, in which a plasticizing motor and an injection motor both move along with the injection action, is smaller in the prior art is solved.

Specifically, the first bearing 5 is an angular contact ball bearing for receiving an axial force generated when the movable plate 6 or other parts move.

Preferably, as shown in fig. 3, the plasticizing driven wheel 802 and the injection driven wheel 902 are both disposed on one side of the movable plate 6 close to the screw nut assembly 10.

As shown in fig. 4, the feed screw nut assembly 10 includes a screw-threaded injection feed screw 1001 and an injection nut 1002; the glue injection nut 1002 is fixed on the support frame 1, the glue injection screw rod 1001 is connected with the glue injection driven wheel 902, and the glue injection screw rod 1001 is movably arranged relative to the glue injection nut 1002 to push the movable plate 6 to move.

The support frame 1 comprises a support plate group 101, the support plate group 101 comprises a glue injection head plate 1011 and a glue injection tail plate 1012, and the glue injection head plate 1011 and the glue injection tail plate 1012 are oppositely arranged; the feed screw nut assembly 10 comprises a glue injection feed screw 1001 and a glue injection nut 1002, the glue injection nut 1002 is sleeved on the glue injection feed screw 1001, and the glue injection nut 1002 is in threaded fit with the glue injection feed screw 1001; wherein, the glue injection nut 1002 is fixedly arranged on the glue injection tail plate 1012.

The support frame 1 further comprises: the four guide rods 102 are sleeved with the glue injection head plate 1011, the first ends of the four guide rods 102 are sleeved with the glue injection tail plate 1012, the glue injection head plate 1011 and the glue injection tail plate 1012 are respectively fixed at corresponding positions on the guide rods 102 by fixing nuts, wherein the movable plate 6 is movably sleeved on the four guide rods 102 along the axial direction of the feed screw nut assembly 10 and is located between the glue injection head plate 1011 and the glue injection tail plate 1012.

Specifically, the movable plate 6 includes two plate portions 601 and four connecting columns 602, the two plate portions 601 are square, and the four connecting columns 602 are respectively disposed at four corners of the square plate portions 601 and are sandwiched between the two plate portions 601.

The injection molding machine penetrates the platform still includes: a first driving part 2, the first driving part 2 being disposed on the movable plate 6 to move with the movable plate 6; the first driving part 2 is in driving connection with the plasticizing driven wheel 802; a second driving part 12, the second driving part 12 being provided on the flap 6 to move with the flap 6; the second driving member 12 is drivingly connected to the injection follower 902.

In particular, the first drive component 2 and the second drive component 12 are motors.

The injection molding machine penetrates the platform still includes: a first mounting bracket 603, the first mounting bracket 603 being disposed on the movable plate 6, the first mounting bracket 603 being configured to be connected to the second driving part 12, so that the second driving part 12 is mounted on the movable plate 6 through the first mounting bracket 603.

Specifically, the first mounting bracket 603 is detachably connected with the movable plate 6; or the first mounting bracket 603 is integrally formed with the movable plate 6.

The first mounting rack 603 comprises at least two first brackets which are arranged at intervals; each first bracket is provided with a first mounting hole for fixing a fastener penetrating through the second mounting plate 1201 of the second driving part 12.

The first bracket includes a first bracket main body for connection with the second driving part 12 and a first connection arm connected with the first bracket main body for connection with the movable plate 6.

In order to facilitate the installation of the first driving part 2, the injection molding machine injection station further comprises a second mounting frame 604; the second mounting frame 604 is used for mounting the first drive component 2.

Specifically, the second mounting bracket 604 is detachably connected with the movable plate 6; or the second mounting bracket 604 is integrally formed with the movable plate 6.

The second mounting frame 604 comprises at least two second brackets, and the at least two second brackets are arranged at intervals; each second bracket is provided with a second mounting hole for fixing a fastener penetrating through the first mounting plate 201 of the first driving part 2.

The second bracket comprises a second bracket main body and a second connecting arm connected with the second bracket main body, the second bracket main body is used for being connected with the first driving part 2, and the second connecting arm is used for being connected with the movable plate 6.

The injection molding machine penetrates the platform still includes: plastify band pulley assembly 8, first driving part 2 and plastify band pulley assembly 8 drive connection, plastify band pulley assembly 8 is connected with the outer lane of first bearing 5 to make first driving part 2 pass through plastify band pulley assembly 8 and drive the outer lane motion of first bearing 5.

Plasticizing pulley assembly 8 includes: the plasticizing driving wheel 801 is in driving connection with the first driving part 2; the plasticizing driven wheel 802, wherein the plasticizing driven wheel 802 is fixedly connected with the outer ring of the first bearing 5; and a plasticizing driving wheel 803, and the plasticizing driving wheel 801 is in transmission connection with the plasticizing driven wheel 802 through the plasticizing driving belt 803.

The injection molding machine penetrates the platform still includes: the glue injection belt wheel assembly 9, the second driving component 12 and the glue injection belt wheel assembly 9 are in driving connection, the glue injection belt wheel assembly 9 is in driving connection with the glue injection screw rod 1001, and therefore the second driving component 12 drives the inner ring of the first bearing 5 and the glue injection screw rod 1001 to rotate through the glue injection belt wheel assembly 9.

The injection pulley assembly 9 comprises: the second driving part 12 is in driving connection with the glue injecting driving wheel 901; one end of the glue injection driven wheel 902 is fixedly connected with the glue injection screw rod 1001, and the other end of the glue injection driven wheel 902 is connected with the inner ring of the first bearing 5; and a glue injection driving wheel 901 is in transmission connection with a glue injection driven wheel 902 through the glue injection driving belt 903.

The injection molding machine penetrates the platform still includes: the inner ring of the first bearing 5 is sleeved on the first rotating shaft 4, and the glue injection screw rod 1001 is connected with the first rotating shaft 4 through the glue injection driven wheel 902. Thus, the injection driven wheel 902 drives the injection screw rod 1001 and the first rotation shaft 4 to rotate, and drives the first rotation shaft 4 and the movable plate 6 to perform linear motion through the action of the screw nut assembly 10.

The glue injection driven wheel 902 is provided with a central hole, and an annular connecting part protruding out of the hole wall is arranged in the central hole of the glue injection driven wheel 902; the glue injection screw rod 1001 is provided with a first shaft section 10011 and an annular flange 10013 which are positioned in a central hole of the glue injection driven wheel 902, the annular flange 10013 protrudes out of the outer peripheral surface of the first shaft section 10011, and the end surface of one side of the annular connecting part is abutted against the end surface of one side of the annular flange 10013; the annular connecting portion has a first through hole, the annular flange 10013 has a first connecting hole corresponding to the first through hole, and one end of the first rotating shaft 4 close to the plastic injection screw rod 1001 has a second connecting hole corresponding to the first through hole, so as to sequentially insert the first fastener through the first connecting hole, the first through hole and the second connecting hole.

The feed screw nut assembly 10 includes penetrates gluey lead screw 1001 and penetrates gluey nut 1002, penetrates gluey lead screw 1001 including the first axle section 10011 and the second axle section 10012 that are connected, cyclic annular flange 10013 protrusion in the outer peripheral face of first axle section 10011, the external diameter of first axle section 10011 second axle section 10012 and cyclic annular flange 10013 increases in proper order, penetrates gluey nut 1002 and overlaps and establish on second axle section 10012, penetrates to glue between nut 1002 and the second axle section 10012 for screw-thread fit.

The glue injection driven wheel 902 is arranged on the glue injection screw rod 1001 to drive the glue injection screw rod 1001 to rotate; the glue injection nut 1002 is disposed on the support frame 1, and the glue injection driven wheel 902 is disposed on the first shaft segment 10011 and connected to the first rotation shaft 4 for pushing the movable plate 6 to move.

The glue injection driven wheel 902 has two coaxial inner holes located at two sides of the annular connecting portion, and the two inner holes are respectively matched with the first rotating shaft 4 and the glue injection screw rod 1001 to ensure that the first rotating shaft 4 and the glue injection screw rod 1001 can rotate coaxially.

As shown in fig. 3 and 7, the injection table of the injection molding machine further includes: and the second rotating shaft 3 is sleeved on the outer ring of the first bearing 5, and the plasticizing driven wheel 802 is connected with the feeding screw rod through the second rotating shaft 3. In this way, the plasticizing driven wheel 802 drives the feeding screw to rotate through the second rotating shaft 3.

As shown in fig. 3, the injection molding machine injection station further includes: the first end cap 301, the first end cap 301 is connected to the second rotating shaft 3, and the first end cap 301 is used for connecting to the feeding screw, so that the second rotating shaft 3 is connected to the feeding screw through the first end cap 301. The first end cover 301 is provided with a plurality of mounting holes, one end of the second rotating shaft 3 close to the first end cover 301 is provided with a plurality of threaded holes corresponding to the mounting holes one to one, and a plurality of screws respectively penetrate through the mounting holes and are screwed in the corresponding threaded holes to connect the first end cover 301 with the second rotating shaft 3.

As shown in fig. 3, the second rotating shaft 3 has a supporting step in the central hole, and the supporting step contacts with the first side of the outer ring of the first bearing 5 to limit the first side of the outer ring of the first bearing 5; and/or the injection molding machine injection platform further comprises a second end cover 302, the second end cover 302 is connected with the second rotating shaft 3, the second end cover 302 is provided with a boss located in a central hole of the second rotating shaft 3, and the end face of the boss is in contact with the second side of the outer ring of the first bearing 5 so as to limit the second side of the outer ring of the first bearing 5.

As shown in fig. 3, the first rotating shaft 4 has a third shaft section and a fourth shaft section which are sequentially arranged along a direction close to the glue injection screw rod 1001, the diameter of the third shaft section is smaller than that of the fourth shaft section, the first rotating shaft 4 further comprises a third end cover 401, the third end cover 401 is arranged at one end of the third shaft section far away from the fourth shaft section and fixed on the third shaft section by a fastening screw 402, the outer diameter of the third end cover 401 is larger than that of the third shaft section, the inner ring of the first bearing 5 is sleeved on the third shaft section, and the inner ring of the first bearing 5 is limited by the end faces of the third end cover 401 and the fourth shaft section.

As shown in fig. 3, the injection molding machine injection station further includes a first seal 403 and a second seal 404; a first sealing member 403 and a second sealing member 404 are respectively disposed at both ends of the first bearing 5, the first sealing member 403 is interposed between the third end cap 401 and the second rotating shaft 3, and the second sealing member 404 is interposed between the fourth shaft section and the second end cap 302 to seal the first bearing 5.

In the embodiment of the present invention, the injection molding machine injection stage includes four first bearings 5 arranged in order in the axial direction of the first rotating shaft 4.

Specifically, the first seal 403 and the second seal 404 are skeleton oil seals.

Wherein a space is left between the inner wall of the second end cap 302 and the outer circumferential surface of the first rotating shaft 4 to ensure that their respective movements do not affect each other.

As shown in fig. 5 to 6, the injection molding machine injection station further includes a transition member 303, and the transition member 303 is disposed between the second rotating shaft 3 and the plasticized driven wheel 802 so that the plasticized driven wheel 802 is connected to the second rotating shaft 3 through the transition member 303.

As shown in fig. 5 and 6, the transition member 303 includes a first annular portion 3031 and a second annular portion 3032 connected, wherein the first annular portion 3031 is sleeved on the second annular portion 3032; the first circular ring portion 3031 is provided with a second through hole, and the plasticized driven wheel 802 is provided with a third connecting hole corresponding to the second through hole, so that a second fastener is arranged in the second through hole and the third connecting hole in a penetrating manner; the second ring portion 3032 has a third through hole, the second end cap 302 has a fourth connecting hole corresponding to the third through hole, and one end of the second rotating shaft 3 close to the second end cap 302 has a fifth connecting hole corresponding to the third through hole, so that the third fastening member is sequentially inserted into the fourth connecting hole, the third through hole and the fifth connecting hole.

The thickness of the first circular ring portion 3031 is greater than that of the second circular ring portion 3032 along the axial direction of the transition member 303, one side end face of the first circular ring portion 3031 is flush with one side end face of the second circular ring portion 3032, and the other side end face of the second circular ring portion 3032 forms a step face in the inner hole of the first circular ring portion 3031, and the step face is in contact with one side end face of the second rotating shaft 3.

As shown in fig. 3, the injection molding machine injection station further includes: and a second bearing 7, wherein the second bearing 7 is sandwiched between the second rotating shaft 3 and the movable plate 6.

Specifically, the second bearings 7 are deep groove ball bearings, the injection molding machine injection platform of the present invention comprises two second bearings 7, the two second bearings 7 are respectively disposed on the movable plate 6 near two ends of the two plate portions 601, the movable plate 6 further comprises a baffle 605, and the baffle 605 is fixedly connected with the first end of the movable plate 6 through a screw. The outer ring of one second bearing 7 is limited by a baffle 605, the outer ring of the other second bearing 7 is limited by a step surface at the second end in the central hole of the movable plate 6, and the inner rings of the two second bearings 7 are limited by two side surfaces of a boss arranged on the outer peripheral surface of the second rotating shaft 3 between the two second bearings 7.

In addition, the injection molding machine injection platform still includes: the inner ring of the pressure detection part 11 is connected with the glue injection nut 1002, and the outer ring of the pressure detection part 11 is connected with the support frame 1.

Specifically, the pressure detection component 11 is a pressure sensor, and the pressure sensor is connected with the glue injection nut 1002 and the support frame 1 through screws.

The second rotating shaft 3, the first end cover 301, the second end cover 302, the transition member 303, the first rotating shaft 4, the third end cover 401, the fastening screw 402, the first sealing member 403, the second sealing member 404, the first bearing 5, the movable plate 6, the baffle 605, the second bearing 7, the plasticized driven wheel 802 and a plurality of fasteners in the invention can be assembled together and installed on the support frame as an assembly unit.

Fig. 8 is a schematic diagram showing the force applied to the second bearing 7 by the plasticizing driven wheel 802 and the injection driven wheel 902. The plasticizing driven wheel 802 and the injection driven wheel 902 are both positioned at one side of the movable plate 6 close to the feed screw nut assembly 10, the plasticizing driven wheel 802 is connected to the second rotating shaft 3 which is matched with the outer ring of the first bearing 5 bearing the axial force, and the injection driven wheel 902 is connected to the first rotating shaft 4 which is matched with the inner ring of the first bearing 5 bearing the axial force. Thus, the plasticized driven wheel 802 bears the tension of the plasticized transmission belt 803, so that the generated radial force F1 acts on the inner ring wall surfaces of the two second bearings 7 at the two ends of the second rotating shaft 3, the radial forces borne by the two second bearings 7 are opposite in direction, the radial force F11 borne by one second bearing 7 close to the plasticized driven wheel 802 is the same as the radial force F1, and the radial force F12 borne by the other second bearing 7 far from the plasticized driven wheel 802 is opposite in direction to the radial force F1; radial force F2 generated by the tension of the glue injection driving belt 903 borne by the glue injection driven wheel 902 acts on the inner ring wall surfaces of the two second bearings 7 through two ends of the second rotating shaft 3 respectively, the radial force directions borne by the two second bearings 7 are opposite, the radial force F21 borne by one second bearing 7 close to the glue injection driven wheel 902 is the same as the radial force F2 direction, and the radial force F22 borne by the other second bearing 7 far away from the glue injection driven wheel 902 is opposite to the radial force F2 direction.

When the plasticized driven wheel 802 and the injection driven wheel 902 are both located on one side of the flap 6 close to the screw-nut assembly 10, and the first driving part 2 and the second driving part 12 are respectively located on two opposite sides of the flap 6, the directions of F1 and F2 are opposite, the directions of F11 and F21 are opposite, and the directions of F12 and F22 are opposite, these two sets of forces respectively act on two opposite sides of the inner rings of the two second bearings 7, so that the second bearings 7 are not deviated from the rotation axis due to too large radial force in the same direction, thereby reducing the loss of the second bearings 7 and prolonging the service life of the second bearings 7.

The invention provides an injection molding machine which comprises an injection molding machine injection platform.

The injection molding machine is a full-electric injection molding machine. The injection system of the all-electric injection molding machine has the functions of plasticizing materials, metering the materials, and conveying the plasticized materials to a molding cavity at a certain speed and pressure so as to obtain a product meeting the requirements of dimensional accuracy and appearance. The production process has two action processes, namely a plasticizing process (also called a glue melting process) and a glue injection process.

In the plasticizing process, the plasticizing motor drives the feeding screw to rotate to convey the material, the material is changed into molten mass under the combined action of an external heating system and is accumulated at the head of the feeding screw, in the process, the molten mass at the head of the feeding screw has a force for retreating the movable parts such as the movable plate 6 and the like, the force is detected by a pressure detection part 11 arranged on the screw nut component 10 and is fed back to a control system, and the control system can control the rotating speed of the screw nut component 10 through the glue injection motor according to a received signal so that the pressure of the molten mass at the head of the feeding screw is within a set value and the movable parts such as the movable plate 6 and the like retreat until the pressure reaches a set position.

In the process of injecting the glue, the plasticizing motor does not rotate, and the injection motor drives the screw nut component 10 to rotate so as to enable the feeding screw to advance, so that the molten material at the head of the feeding screw enters the molding die cavity at a certain speed and pressure. The pressure of the melt in the process is detected by the pressure detection part 11 and fed back to the control system, and the control system compares the received signal with the set pressure and makes a judgment so as to maintain or change the rotating speed of the injection screw rod, so that the melt has proper pressure in the whole injection process.

The injection molding machine injection platform of the application has the working process as follows:

(1) during the plastification process (moving plate 6 in the direction of approaching the injection tail 1012)

The first driving part 2 provides mechanical power for plasticizing raw materials by the feeding screw, and the motion transmission path is as follows: the first drive member 2 rotates → the plasticizing pulley assembly 8 rotates → the transition member 303 rotates → the second rotation shaft 3 rotates → the first end cap 301 rotates → the feed screw rotates;

the movable plate 6 is pushed to retreat by the counter force when the raw material is plasticized by the feeding screw, and the force transmission path is as follows: the first end cap 301 → the second rotation shaft 3 → the second bearing 7 → the movable plate 6.

The second driving member 12 moves the movable plate 6 backward at a suitable speed, and the motion transmission path is: the second driving part 12 rotates → the tape injection pulley assembly 9 rotates → the tape injection screw 1001 rotates → the first rotating shaft 4 rotates, and the screw thread fit between the tape injection screw 1001 and the tape injection nut 1002 converts the rotational motion into a linear motion, thereby retreating the movable plate 6 at an appropriate speed.

(2) During the injection process (the movable plate 6 moves in the direction far away from the injection tail plate 1012)

The second driving member 12 provides mechanical power to inject the molten material in the plasticizing stage into the mold cavity, and the motion transmission path is as follows: the second driving component 12 → the rotation of the tape injection belt wheel assembly 9 → the rotation of the tape injection screw rod 1001 → the rotation of the first rotating shaft 4, the rotation motion of the thread fit between the tape injection screw rod 1001 and the tape injection nut 1002 is converted into a linear motion, so that the movable plate 6 and the feeding screw rod advance, and the force transmission path is as follows: the glue injection screw rod 1001 → the glue injection driven wheel 902 → the first rotating shaft 4 → the first bearing 5 → the second rotating shaft 3 → the second bearing 7 and the first end cap 301, the second bearing 7 → the baffle 605-the movable plate 6, the first end cap 301 → the feed screw rod.

Wherein the first drive member 2 is not rotated, avoiding the rotation of the feed screw under the reaction force of the injection process.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. An injection molding machine injection station, comprising:

a support frame (1);

the feed screw nut assembly (10), the feed screw nut assembly (10) is installed on the support frame (1);

the movable plate (6), the movable plate (6) is movably arranged on the support frame (1) along the axial direction of the screw nut component (10);

a first bearing (5), the first bearing (5) being disposed on the movable plate (6) to move with the movable plate (6);

the plasticizing driven wheel (802), the plasticizing driven wheel (802) is connected with the outer ring of the first bearing (5) to synchronously move with the outer ring of the first bearing (5), and the plasticizing driven wheel (802) is used for being in transmission connection with a feeding screw of an injection molding machine;

the glue injection driven wheel (902), the glue injection driven wheel (902) is connected with the inner ring of the first bearing (5) to synchronously move with the inner ring of the first bearing (5), and the glue injection driven wheel (902) is connected with a glue injection screw rod (1001) of the screw-nut assembly (10) to drive the glue injection screw rod (1001) to rotate;

the plasticizing driven wheel (802) and the glue injection driven wheel (902) are both arranged on one side of the movable plate (6) close to the screw nut assembly (10);

the injection molding machine injection platform further comprises:

a first driving part (2), the first driving part (2) being disposed on the movable plate (6) to move with the movable plate (6); the first driving part (2) is in driving connection with the plasticizing driven wheel (802);

a second driving part (12), the second driving part (12) being provided on the movable plate (6) to move with the movable plate (6); the second driving component (12) is in driving connection with the glue injection driven wheel (902);

the inner ring of the first bearing (5) is sleeved on the first rotating shaft (4), and the glue injection screw rod (1001) is connected with the first rotating shaft (4) through the glue injection driven wheel (902);

the second rotating shaft (3) is sleeved on the outer ring of the first bearing (5), and the plasticizing driven wheel (802) is connected with the feeding screw rod through the second rotating shaft (3);

two second bearings (7) respectively interposed between the second rotary shaft (3) and two plate portions (601) of the movable plate (6) which are arranged at an interval;

the first driving part (2) and the second driving part (12) are respectively positioned at two opposite sides of the movable plate (6).

2. The injection molding machine shooting table of claim 1,

the glue injection driven wheel (902) is provided with a central hole, and an annular connecting part protruding out of the hole wall is arranged in the central hole of the glue injection driven wheel (902);

the glue injection screw rod (1001) is provided with a first shaft section (10011) and an annular flange (10013) which are positioned in a central hole of the glue injection driven wheel (902), the annular flange (10013) protrudes out of the outer peripheral surface of the first shaft section (10011), and the end surface of one side of the annular connecting part is abutted against the end surface of one side of the annular flange (10013);

the annular connecting part is provided with a first through hole, the annular flange (10013) is provided with a first connecting hole corresponding to the first through hole, and one end of the first rotating shaft (4) close to the glue injection screw rod (1001) is provided with a second connecting hole corresponding to the first through hole so as to enable the first fastener to be sequentially arranged in the first connecting hole, the first through hole and the second connecting hole in a penetrating manner.

3. The injection molding machine injection station of claim 1, further comprising:

the first end cover (301), the first end cover (301) is connected with the second rotating shaft (3), and the first end cover (301) is used for being connected with the feeding screw rod, so that the second rotating shaft (3) is connected with the feeding screw rod through the first end cover (301).

4. The injection molding machine shooting table of claim 1,

a supporting step is arranged in a central hole of the second rotating shaft (3), and the supporting step is contacted with a first side of an outer ring of the first bearing (5) so as to limit the first side of the outer ring of the first bearing (5); and/or

The injection molding machine injection platform further comprises a second end cover (302), the second end cover (302) is connected with the second rotating shaft (3), the second end cover (302) is provided with a boss located in a central hole of the second rotating shaft (3), and the end face of the boss is in contact with the second side of the outer ring of the first bearing (5) so as to limit the second side of the outer ring of the first bearing (5).

5. The injection molding machine shooting pot of claim 4,

the injection molding machine injection platform further comprises a transition part (303), wherein the transition part (303) is arranged between the second rotating shaft (3) and the plasticizing driven wheel (802), so that the plasticizing driven wheel (802) is connected with the second rotating shaft (3) through the transition part (303).

6. The injection molding machine shooting pot of claim 5,

the transition component (303) comprises a first circular ring part (3031) and a second circular ring part (3032) which are connected, and the first circular ring part (3031) is sleeved on the second circular ring part (3032);

the first circular ring part (3031) is provided with a second through hole, and the plasticizing driven wheel (802) is provided with a third connecting hole corresponding to the second through hole, so that a second fastener is arranged in the second through hole and the third connecting hole in a penetrating manner;

the second circular ring part (3032) is provided with a third through hole, the second end cover (302) is provided with a fourth connecting hole corresponding to the third through hole, and one end of the second rotating shaft (3) close to the second end cover (302) is provided with a fifth connecting hole corresponding to the third through hole, so that a third fastener is sequentially arranged in the fourth connecting hole, the third through hole and the fifth connecting hole in a penetrating manner.

7. An injection molding machine comprising an injection molding machine injection station, wherein the injection molding machine injection station is the injection molding machine injection station of any one of claims 1 to 6.