CN202862551U

CN202862551U - Rack-type multi-speed double ejection device

Info

Publication number: CN202862551U
Application number: CN 201220545509
Authority: CN
Inventors: 陈彩永; 张国伟; 陈鹏野
Original assignee: NINGBO YIZHONG MOLDING CO Ltd
Current assignee: NINGBO YIZHONG MOLDING CO Ltd
Priority date: 2012-10-12
Filing date: 2012-10-12
Publication date: 2013-04-10
Anticipated expiration: 2022-10-12

Abstract

The utility model provides a rack-type multi-speed double ejection device. The rack-type multi-speed double ejection device comprises a gear (1), a carrier plate rack (2), a sliding rack (3), a pushing plate (4) and a pushing carrier plate (41), a pushing carrier plate reciprocating lever (5), a stub bar pulling ejector rod (6), a product ejector rod (7) and a locating rod (8). When the device formed by the components works, a product and a mold core become loose, the top surface of a sliding rack moving forwards along with the pushing carrier plate is in contact with the lower end of the locating rod, the locating rod props against the sliding rack, the carrier plate rack pushes a carrier plate and drives the stub bar pulling ejector rod and the product ejector rod under the rotation effect of the engagement of the gear, the carrier plate gear and the sliding rack, and the product and a cold stub bar are accelerated to be pushed forwards and break away from the mold core and the pushing plate at a double speed of the forward movement of the pushing plate. The rack-type multi-speed double ejection device provided by the utility model overcomes the shortcomings of limited application and low efficiency, and fulfills the purposes of widening an application range and further improving the demolding efficiency.

Description

A kind of rack-and-pinion speed secondary ejection device

Technical field

The utility model relates to the ejection stripping device of injection mold, specifically refers to divide secondary will coat power greatly and a kind of rack-and-pinion speed secondary ejection device of the dark type injection-molded item ejection device that coated length is darker for injection mold.

Background technology

The ejection device of and dark type injection-molded item that coated length darker large for coating power, prior art adopts the lever secondary ejection device, namely, push rod slowly ejects with top board first, the goods that are coated on the core are occured loosening, prize push rod by lever-type seesaw again, the goods that acceleration will have been become flexible eject the disengaging core, shorten the time of whole ejection process to improve the efficient of the goods demoulding; Lever is applicable to man-to-man ejecting, namely, the supporting push rod of lever, therefore it is secondary to be called again a cover seesaw, have more the mould of goods for the mould with runner, and need the many moulds that push rod ejects synchronously owing to can't arrange that too much seesaw is secondary a secondary mould arrangement, and so that lever-type application limited to; In addition, to accelerate the distance eject limited because lever prizes goods, for the darker dark type injection-molded item of coated length, the ejection cycle that shortens is also limited, therefore the efficient that improves is also few, therefore, there are the problems and shortcomings that application is limited to, efficient is not high in prior art.

Summary of the invention

Problems and shortcomings for above-mentioned prior art existence, the utility model adopts the device that draws push rod, goods push rod, backstay to consist of by gear, top board tooth bar, sliding rack, push pedal, ejection plate, push pedal top compound lever, stub bar, gear rotatably is fixedly installed on ejection plate place, top board tooth bar and teeth parallel with sliding rack relatively be clamped in gear about two limits and gear engagement, wherein, the top board tooth bar be fixedly connected on top board below, the guide groove slip snapping of sliding rack and ejection plate; From top to bottom, push pedal be positioned at the dynamic model support plate above, top board is positioned at the below of dynamic model support plate, the ejection plate is positioned at the below of top board, base plate is positioned at the below of ejection plate, push pedal top compound lever slides through push pedal, dynamic model support plate, top board push pedal is fixedly connected with the ejection plate; Stub bar draws that push rod, goods push rod slide through push pedal, the dynamic model support plate is fixedly connected with top board; Backstay is top corresponding with sliding rack, slides through top board, be fixed on the dynamic model support plate below; During work, the stern post pushing tow ejection plate of injection machine, top board drive respectively push pedal and stub bar draws push rod and goods push rod to promote forward at a slow speed goods disengaging core; When goods and core occur loosening, meet with the lower end of the top and backstay of the sliding rack of ejection plate reach and to contact, backstay props up sliding rack, be subjected to gear, the top board tooth bar, the intermeshing rotary action of sliding rack, the top board tooth bar pushes top board drive stub bar and draws push rod and goods push rod, two times of speed that move forward with push pedal, accelerate the technical scheme that promotion goods and cold burden head break away from forward core and push pedal, a kind of rack-and-pinion speed secondary ejection device is provided, be intended to make secondary ejection device can be common to dark type goods mould, one mould has more mould or many top rod molds, reaches the expansion range of application, further improve the purpose of demoulding efficiency.

The purpose of this utility model is achieved in that a kind of rack-and-pinion speed secondary ejection device, comprise that gear, top board tooth bar, sliding rack, push pedal, ejection plate, push pedal top compound lever, stub bar draw push rod, goods push rod, backstay, wherein: described gear is cylindrical straight gear involute steel gear; Described top board tooth bar is the rectangle strip steel components that a long side face is provided with trapezoidal teeth; Described sliding rack is the rectangle strip steel components that a long side face is provided with trapezoidal teeth, also is provided with the guide rail of the T shape of above-below direction on the relative side of the face with being provided with teeth of sliding rack; Described push pedal is the steel components of rectangular plate-like, and push pedal is provided with the through hole that cooperates with the lower profile longitudinal sliding motion of the core of dynamic model, and push pedal is used for the pushing tow goods and breaks away from the core purposes; Described ejection plate is the steel components of rectangular plate-like, and two limits are provided with the arrangement slotted eye for fixed gear about the ejection plate; Also be provided with the guide groove that described guide rail with sliding rack slides the T shape that is fastened on the one side opening wall of described arrangement slotted eye; Described push pedal top compound lever is cylindrical shaft-like steel components; It is the cylindrical shaft-like steel components that the bottom is provided with flange that described stub bar draws push rod, and the breach that stub bar draws the top of push rod to be provided with zigzag is called pull head; Described goods push rod is the cylindrical shaft-like steel components that the bottom is provided with flange; Described backstay is interior hexagonal cylindrical hook bolt;

Gear is rotatably mounted to the described arrangement slotted eye place of ejection plate, top board tooth bar and teeth parallel with sliding rack be clamped in relatively respectively gear about two limits and gear engagement; The upper end of top board tooth bar be fixedly connected on top board below, sliding rack is arranged in the described arrangement slotted eye and described guide groove slip snapping of ejection plate;

From top to bottom, push pedal be positioned at the dynamic model support plate above, top board is positioned at the below of dynamic model support plate, the ejection plate is positioned at the below of top board, base plate is positioned at the below of ejection plate; Push pedal top compound lever slides through push pedal, dynamic model support plate and top board push pedal is fixedly connected with the ejection plate; Stub bar draws push rod, goods push rod to slide through push pedal and dynamic model support plate, and stub bar draws the bottom of push rod, goods push rod to be fixedly connected with top board; Backstay is corresponding with the sliding rack position be fixed on the dynamic model support plate below, contact with meeting above the sliding rack but the lower end down sliding of backstay passes top board, the distance between the lower end of backstay and sliding rack top is called and ejects slowly spacing; The top of following and base plate of sliding rack contacts.

Operation principle and beneficial effect

During application, mould is horizontal installation, and the above-below direction that structure is described is the fore-and-aft direction of job description.

During the demoulding, the stern post pushing tow ejection plate of injection machine, top board drive respectively push pedal and stub bar draws push rod and goods push rod to promote forward at a slow speed goods disengaging core; When goods and core occur loosening, the capable Bi Suoshu of sliding rack with the reach of ejection plate ejects spacing slowly, meet and contact in the lower end of the top and backstay of sliding rack, ejection this moment plate continues at a slow speed reach, because backstay props up sliding rack, be subjected to gear, the top board tooth bar, the intermeshing effect of sliding rack, the gear rotation, the top board tooth bar that the gear driven of rotation is engaged with moves forward, because the top board tooth bar moves forward speed with respect to gear translational speed forward with the ejection plate and equates, through speed stack, then this moment top board tooth bar pushing tow top board to move forward speed be two times that the ejection plate moves forward speed, thereby be called speed, therefore, the top board tooth bar pushes top board drive stub bar and draws push rod and goods push rod, with two times of speed that push pedal moves forward, accelerates goods and cold burden head are pushed away forward core and push pedal; Shorten thus the time of whole ejection process, improved the demoulding efficiency of goods;

When resetting, dynamic model and cover half matched moulds, the bar that returns back to top of dynamic model promotes roof backing and resets, top board drives stub bar and draws push rod and goods push rod rollback to reset, top board drives the ejection sheet reset simultaneously through the top board tooth bar, and the ejection plate resets push pedal through push pedal top compound lever, in the process of ejection sheet reset, be subjected to gear, top board tooth bar, the intermeshing rotary action of sliding rack, top board tooth bar and sliding rack synchronous reset.

This device stretches out the described spacing that ejects slowly of adjustable in length below the dynamic model support plate by adjusting backstay, is convenient to lengthen to greatest extent speed and ejects distance, improves demoulding efficiency; This device is convenient to choose as required the length of top board tooth bar and sliding rack, to satisfy the application of dark type goods mould; This device also is applicable to a mould and has more mould or the application of many top rod molds, has versatility in a big way.

Above-mentioned, the utility model adopts the device that draws push rod, goods push rod, backstay to consist of by gear, top board tooth bar, sliding rack, push pedal, ejection plate, push pedal top compound lever, stub bar, gear rotatably is fixedly installed on ejection plate place, top board tooth bar and teeth parallel with sliding rack relatively be clamped in gear about two limits and gear engagement, wherein, the top board tooth bar be fixedly connected on top board below, the guide groove slip snapping of sliding rack and ejection plate; From top to bottom, push pedal be positioned at the dynamic model support plate above, top board is positioned at the below of dynamic model support plate, the ejection plate is positioned at the below of top board, base plate is positioned at the below of ejection plate, push pedal top compound lever slides through push pedal, dynamic model support plate, top board push pedal is fixedly connected with the ejection plate; Stub bar draws that push rod, goods push rod slide through push pedal, the dynamic model support plate is fixedly connected with top board; Backstay is top corresponding with sliding rack, slides through top board, be fixed on the dynamic model support plate below; During work, the stern post pushing tow ejection plate of injection machine, top board drive respectively push pedal and stub bar draws push rod and goods push rod to promote forward at a slow speed goods disengaging core; When goods and core occur loosening, meet with the lower end of the top and backstay of the sliding rack of ejection plate reach and to contact, backstay props up sliding rack, be subjected to gear, the top board tooth bar, the intermeshing rotary action of sliding rack, the top board tooth bar pushes top board drive stub bar and draws push rod and goods push rod, two times of speed that move forward with push pedal, accelerate the technical scheme that promotion goods and cold burden head break away from forward core and push pedal, overcome prior art and had the application limitation, the problems and shortcomings that efficient is not high, a kind of rack-and-pinion speed secondary ejection device that provides, can be common to dark type goods mould, one mould has more mould or many top rod molds, has reached the expansion range of application, further improve the purpose of demoulding efficiency.

Description of drawings

Fig. 1 is a kind of rack-and-pinion speed secondary ejection device of the present utility model, is arranged in the structural representation of using mould;

Fig. 2 is a kind of rack-and-pinion speed secondary ejection device of the present utility model, is operated in the principle schematic that speed ejects tense.

Below in conjunction with the embodiment in the accompanying drawing the utility model is described in further detail, but should not be construed as any restriction of the present utility model.

Among the figure: gear 1, top board tooth bar 2, sliding rack 3, push pedal 4, ejection plate 41, push pedal top compound lever 5, stub bar draw push rod 6, goods push rod 7, backstay 8, dynamic model 01, dynamic model support plate 011, core 012, top board 013, base plate 014, cover half 02, goods 03, cold burden head 04, stern post 05.

The specific embodiment

Consult Fig. 1, Fig. 2, a kind of rack-and-pinion speed secondary ejection device of the present utility model, comprise that gear 1, top board tooth bar 2, sliding rack 3, push pedal 4, ejection plate 41, push pedal top compound lever 5, stub bar draw push rod 6, goods push rod 7, backstay 8, wherein: described gear 1 is cylindrical straight gear involute steel gear; Described top board tooth bar 2 is the rectangle strip steel components that a long side face is provided with trapezoidal teeth; Described sliding rack 3 is the rectangle strip steel components that a long side face is provided with trapezoidal teeth, also is provided with the guide rail of the T shape of above-below direction on the relative side of the face with being provided with teeth of sliding rack 3; Described push pedal 4 is the steel components of rectangular plate-like, and push pedal 4 is provided with the through hole that cooperates with the lower profile longitudinal sliding motion of the core 012 of dynamic model, and push pedal 4 is used for pushing tow goods 03 and breaks away from core 012 purposes; Described ejection plate 41 is the steel components of rectangular plate-like, and two limits are provided with the arrangement slotted eye for fixed gear 1 about ejection plate 41; Also be provided with the guide groove that described guide rail with sliding rack 3 slides the T shape that is fastened on the one side opening wall of described arrangement slotted eye; Described push pedal top compound lever 5 is cylindrical shaft-like steel components; Described stub bar draws push rod 6 to be provided with the cylindrical shaft-like steel components of flange for the bottom, and the breach that stub bar draws the top of push rod 6 to be provided with zigzag is called pull head; Described goods push rod 7 is provided with the cylindrical shaft-like steel components of flange for the bottom; Described backstay 8 is interior hexagonal cylindrical hook bolt;

Gear 1 is rotatably mounted to the described arrangement slotted eye place of ejection plate 41, the parallel and teeth of top board tooth bar 2 and sliding rack 3 be clamped in relatively respectively gear 1 about two limits and gear 1 engagement; The upper end of top board tooth bar 2 be fixedly connected on top board 013 below, sliding rack 3 is arranged in the described arrangement slotted eye and described guide groove slip snapping of ejection plate 41;

From top to bottom, push pedal 4 be positioned at dynamic model support plate 011 above, top board 013 is positioned at the below of dynamic model support plate 011, ejection plate 41 is positioned at the below of top board 013, base plate 014 is positioned at the below of ejection plate 41; Push pedal top compound lever 5 slides through push pedal 4, dynamic model support plate 011 and top board 013 push pedal 4 is fixedly connected with ejection plate 41; Stub bar draws push rod 6, goods push rod 7 to slide through push pedal 4 and dynamic model support plate 011, and stub bar draws the bottom of push rod 6, goods push rod 7 to be fixedly connected with top board 013; Backstay 8 is corresponding with sliding rack 3 positions be fixed on dynamic model support plate 011 below, but the lower end down sliding of backstay 8 passes top board 013 and contacts with meeting above the sliding rack 3, and the distance between the lower end of backstay 8 and sliding rack 3 top is called and ejects slowly spacing; The top of following and base plate 014 of sliding rack 3 contacts.

Operation principle and beneficial effect

During the demoulding, the stern post 05 pushing tow ejection plate 41 of injection machine, top board 013 drive respectively push pedal 4 and stub bar draws push rod 6 and goods push rod 7 to promote forward at a slow speed goods 03 disengaging core 012; When goods 03 and core 012 occur loosening, sliding rack 3 row Bi Suoshu with 41 reaches of ejection plate eject spacing slowly, meet and contact in the lower end of the top and backstay 8 of sliding rack 3, ejection this moment plate 41 continues at a slow speed reach, because backstay 8 props up sliding rack 3, be subjected to gear 1, top board tooth bar 2, sliding rack 3 intermeshing effects, gear 1 rotation, the gear 1 of rotation drives the top board tooth bar 2 that is engaged with and moves forward, because top board tooth bar 2 moves forward speed with respect to gear 1 translational speed forward with ejection plate 41 and equates, superpose through speed, then this moment top board tooth bar 2 pushing tow top boards 013 to move forward speed be two times that ejection plate 41 moves forward speed, thereby be called speed, therefore, top board tooth bar 2 pushes top board 013 drive stub bar and draws push rod 6 and goods push rod 7, with two times of speed that push pedal 4 moves forward, accelerates goods 03 and cold burden head 04 are pushed away forward core 012 and push pedal 4; Shorten thus the time of whole ejection process, improved the demoulding efficiency of goods 03;

When resetting, dynamic model 01 and cover half 02 matched moulds, the bar that returns back to top of dynamic model promotes top board 013 rollback and resets, top board 013 drives stub bar and draws push rod 6 and goods push rod 7 rollbacks to reset, top board 013 drives simultaneously ejection plate 41 through top board tooth bar 2 and resets, and ejection plate 41 resets push pedal 4 through push pedal top compound lever 5, in the process that ejection plate 41 resets, be subjected to gear 1, top board tooth bar 2, sliding rack 3 intermeshing rotary actions, top board tooth bar 2 and sliding rack 3 synchronous resets.

This device stretches out the described spacing that ejects slowly of adjustable in length below the dynamic model support plate 011 by adjusting backstay 8, is convenient to lengthen to greatest extent speed and ejects distance, improves demoulding efficiency; This device is convenient to choose as required the length of top board tooth bar 2 and sliding rack 3, to satisfy the application of dark type goods mould; This device also is applicable to a mould and has more mould or the application of many top rod molds, has versatility in a big way.

Claims

1. rack-and-pinion speed secondary ejection device, comprise that gear (1), top board tooth bar (2), sliding rack (3), push pedal (4), ejection plate (41), push pedal top compound lever (5), stub bar draw push rod (6), goods push rod (7), backstay (8), is characterized in that: described gear (1) is cylindrical straight gear involute steel gear; Described top board tooth bar (2) is the rectangle strip steel components that a long side face is provided with trapezoidal teeth; Described sliding rack (3) is the rectangle strip steel components that a long side face is provided with trapezoidal teeth, also is provided with the guide rail of the T shape of above-below direction on the relative side of the face with being provided with teeth of sliding rack (3); Described push pedal (4) is the steel components of rectangular plate-like, push pedal (4) is provided with the through hole that cooperates with the lower profile longitudinal sliding motion of the core (012) of dynamic model, and push pedal (4) is used for pushing tow goods (03) and breaks away from core (012) purposes; Described ejection plate (41) is the steel components of rectangular plate-like, and two limits are provided with the arrangement slotted eye for fixed gear (1) about ejection plate (41); Also be provided with the guide groove that described guide rail with sliding rack (3) slides the T shape that is fastened on the one side opening wall of described arrangement slotted eye; Described push pedal top compound lever (5) is cylindrical shaft-like steel components; Described stub bar draws push rod (6) to be provided with the cylindrical shaft-like steel components of flange for the bottom, and the breach that stub bar draws the top of push rod (6) to be provided with zigzag is called pull head; Described goods push rod (7) is provided with the cylindrical shaft-like steel components of flange for the bottom; Described backstay (8) is interior hexagonal cylindrical hook bolt;

Gear (1) is rotatably mounted to the described arrangement slotted eye place of ejection plate (41), top board tooth bar (2) and teeth parallel with sliding rack (3) be clamped in relatively respectively gear (1) about two limits and gear (1) engagement; The upper end of top board tooth bar (2) be fixedly connected on top board (013) below, sliding rack (3) is arranged in the described arrangement slotted eye and described guide groove slip snapping of ejection plate (41);

From top to bottom, push pedal (4) be positioned at dynamic model support plate (011) above, top board (013) is positioned at the below of dynamic model support plate (011), and ejection plate (41) is positioned at the below of top board (013), and base plate (014) is positioned at the below of ejection plate (41); Push pedal top compound lever (5) slides through push pedal (4), dynamic model support plate (011) and top board (013) push pedal (4) is fixedly connected with ejection plate (41); Stub bar draws push rod (6), goods push rod (7) to slide through push pedal (4) and dynamic model support plate (011), and stub bar draws the bottom of push rod (6), goods push rod (7) to be fixedly connected with top board (013); Backstay (8) is corresponding with sliding rack (3) position be fixed on dynamic model support plate (011) below, backstay (8) but the lower end down sliding pass top board (013) and contact with meeting above the sliding rack (3), the distance between the lower end of backstay (8) and sliding rack (3) top is called and ejects slowly spacing; The top contact of the following and base plate (014) of sliding rack (3).