CN109318454A

CN109318454A - A kind of injection moulding apparatus of sunshade limited block

Info

Publication number: CN109318454A
Application number: CN201811097492.5A
Authority: CN
Inventors: 李大伟
Original assignee: Anhui Rong Ming New Mstar Technology Ltd
Current assignee: Anhui Rong Ming New Mstar Technology Ltd
Priority date: 2018-09-20
Filing date: 2018-09-20
Publication date: 2019-02-12

Abstract

The invention discloses a kind of injection moulding apparatus of sunshade limited block, including solid plate, mold injection device, interior circulation mode locking hydraulic cylinder and moving template, run through between the solid plate and moving template and is connected with pull rod, the left side of the pull rod, which is run through, is connected with interior circulation mode locking hydraulic cylinder, the interior circulation mode locking hydraulic cylinder is fixedly mounted on the left side of solid plate, the inside of the interior circulation mode locking hydraulic cylinder, which is run through, is connected with shifting formwork hydraulic cylinder, the right end of the shifting formwork hydraulic cylinder passes through solid plate inner wall and is fixedly connected with moving template inner wall, it is also extended through between the solid plate and moving template and is connected with mold injection device, greatly reduce the pressure of locked loop, pressure simultaneously in mode locking oil pocket is smaller, leakage rate is possible to fewer, be conducive to energy saving, there is positive effect to the service life for extending moving template and the stationarity for guaranteeing system , injection precision can be improved, can be realized the precise high-efficiency molding of micro plastic product, and structure is simple and convenient to operate.

Description

A kind of injection moulding apparatus of sunshade limited block

Technical field

The present invention relates to injection moulding apparatus field, specially a kind of injection moulding apparatus of sunshade limited block.

Background technique

The injection molding machine of sunshade limited block is the innovative type released the 1990s, in all types of injection molding machine fields Kind has its unique advantages, and be structurally characterized in that: template number is compared with three-plate type, without rear solid plate, only preceding cover half Plate and moving template, clamp force act directly in this two pieces of templates, carry out rapid mould-moving by small-diameter hydraulic cylinder when die opening and closing, Pole is first carried out after mold contact, high-voltage lock mould is then carried out by diameter hydraulic cylinder again；System is before pressure stabilizing by positioning and locking Mechanism locks moving template pole, prevents moving template from can be generated retrogressing by after injection high pressure.

For example, patent name is a kind of patent of invention of plastic injection device application No. is 201810202382.4:

It devises special nozzle heating device and torque stabilising arrangement.So that injection moulding mechanism of the invention The plastic products quality made is stablized.

But the injection moulding apparatus of existing sunshade limited block has the following deficiencies:

(1) currently, the compound double-plate matched mould apparatus of the injection molding machine for sunshade limited block, open mold and mode locking are dynamic Work is completed by a hydraulic cylinder, and hydraulic cylinder is by hydraulic pump DFF Direct Fuel Feed, and to reach the requirement of clamp force, diameter will be very Greatly, and in the case where flow is certain, cylinder diameter is bigger, and speed is lower, in the case where hydraulic pump power is certain, if Hydraulic pump flow is increased, then discharge capacity will reduce, therefore this mold closing mechanism cannot coordinate locked mode pressure and shifting formwork speed well The relationship of degree, and energy consumption is higher；

(2) existing, injection molding machine is increased due to will appear a large amount of oil circulation between its two chamber of mode locking hydraulic cylinder Resistance when shifting formwork increases stickiness dissipation, simultaneously because hydraulic-oil quantity greatly will cause energy consumption increase, for this The mold closing mechanism of type adds fluid pressure line and valve control system in the oil inlet and oil outlet of mode locking hydraulic cylinder at present, makes mode locking Two chamber hydraulic oil of hydraulic cylinder forms external differential circulation by the external hydraulic circuit added during shifting formwork, and then can subtract Few energy loss, still, the latus rectum size for the hydraulic pressure road added is limited, and the oil circulation of two chamber of mode locking hydraulic cylinder acts shifting formwork Drag effect cannot ignore, can make shifting formwork move stationarity reduce.

Summary of the invention

In order to overcome the shortcomings of that prior art, the present invention provide a kind of injection moulding apparatus of sunshade limited block, can have Effect solves the problems, such as that background technique proposes.

The technical solution adopted by the present invention to solve the technical problems is:

A kind of injection moulding apparatus of sunshade limited block, including solid plate, mold injection device, interior circulation mode locking hydraulic cylinder and Moving template, through pull rod is connected between the solid plate and moving template, the left side of the pull rod is locked through interior circulation is connected with Mould hydraulic cylinder, the interior circulation mode locking hydraulic cylinder are fixedly mounted on the left side of solid plate, the interior circulation mode locking hydraulic cylinder Inside through shifting formwork hydraulic cylinder is connected with, the right end of the shifting formwork hydraulic cylinder passes through solid plate inner wall and fixes with moving template inner wall Connection, also extends through between the solid plate and moving template and is connected with mold injection device.

Further, the mold injection device includes connection pedestal, support frame and injection servo motor, the connection bottom Support frame is fixedly installed on the upper surface of seat, servo is injected through injection servo motor is connected in the front of support frame as described above The output shaft of motor is axially connected with driven screw, and the left end of the driven screw is axially connected with active nut, the active The outside of nut is fixedly connected by thread bush with injection servo motor, and the left end of the active nut is adjusted through metering is connected with Device is saved, by injection piston through check (non-return) valve is connected with, the injection piston is embedded in pre- the output end of the metering adjuster On the inner wall of molding machine cylinder, is also extended through on the left side of the preformed machine barrel and be connected with nozzle, the left end of the nozzle and injection column Plug is through connection.

Further, preformed screw rod, the outer surface of the preformed machine barrel are provided in the upper inside walls of the preformed machine barrel On be also wound with heating coil, be fixedly connected on the left of the right end and support frame of the preformed machine barrel, on the inner wall of support frame as described above Also be fixedly mounted there are two support guide, be provided with mobile bracket between two support guides, the mobile bracket it is interior Portion is inlaid with preformed screw rod servo motor, and the axial end of the preformed screw rod servo motor is axially connect with preformed screw rod.

Further, the preformed screw rod servo motor right end is connected with preformed lead screw, and the right end of the preformed lead screw passes through It wears and is connected with preformed lead screw servo motor, the preformed lead screw servo motor is fixedly mounted on the right side of support frame.

Further, the interior circulation mode locking hydraulic cylinder includes Barrel of Hydraulic Cylinders and control oil pocket, the Barrel of Hydraulic Cylinders Inside through being connected with pull rod, the right end of the pull rod is through being connected on the inner wall of solid plate, on the outer wall of the pull rod Control oil pocket is connected with by inserted valve, and retaining ring, the right side of the retaining ring are connected with by spring on the inner wall of the inserted valve It is threaded with anti-return nut, the anti-return nut, which runs through, to be connected on the outer wall of pull rod.

Further, the left end of the pull rod, which also extends through, is connected with hole piston, the both ends of the hole piston with it is hydraulic Cylinder inner wall of cylinder is fixedly connected, and the right side of inserted valve is arranged in the hole piston, is additionally provided on the right side of the hole piston Locking nut, the locking nut is through being connected on the outer wall of pull rod, and the left end of the pull rod is after being connected with oil hydraulic cylinder Lid, the oil hydraulic cylinder rear cover are threaded on the left side outer wall of Barrel of Hydraulic Cylinders.

Further, through connection oil return opening, the right side of the Barrel of Hydraulic Cylinders is also passed through for the lower part of the oil hydraulic cylinder rear cover It wears and is connected with oil inlet connecting pipe.

Compared with prior art, the beneficial effects of the present invention are:

(1) injection moulding apparatus of sunshade limited block of the invention greatly reduces the pressure of locked loop, while mode locking oil Intracavitary pressure is smaller, and leakage rate is possible to fewer, is conducive to energy saving, and using pull rod as the piston of mode locking hydraulic cylinder On the one hand bar alleviates the weight of injection molding machine, on the other hand saves material, thereby reduce manufacturing cost, mode locking hydraulic cylinder It is mounted on solid plate with shifting formwork hydraulic cylinder, there was only liftout attachment on moving template, can reduce the weight of moving template, and then reduced dynamic Friction and inertia of the template during shifting formwork have the service life for extending moving template and the stationarity for guaranteeing system positive Effect, greatly shortens the length of mold closing mechanism, reduces the occupied area of injection molding machine；

(2) injection moulding apparatus of sunshade limited block of the invention, is internally provided with mold injection device, according to difference The demand of injection-molded item and Shooting Technique, flexibly setting and adjusting, and quickly made a response by displacement sensor, Ke Yiti High injection precision can be realized the precise high-efficiency molding of micro plastic product, and structure is simple and convenient to operate.

Detailed description of the invention

Fig. 1 is overall structure diagram of the invention；

Fig. 2 is mold injection device structural schematic diagram of the invention；

Fig. 3 is interior circulation mode locking hydraulic cylinder structure schematic diagram of the invention.

Figure label:

1- solid plate；2- pull rod；3- moving template；4- mold injection device；Mode locking hydraulic cylinder is recycled in 5-；6- shifting formwork is hydraulic Cylinder；

401- connection pedestal；402- support frame；403- injects servo motor；404- active nut；405- thread bush；406- Measure adjuster；407- injection piston；408- nozzle；409- preformed machine barrel；410- preformed screw rod；411- heating coil；412- Support guide；413- moves bracket；414- preformed screw rod servo motor；415- preformed lead screw；416- check (non-return) valve；417- preformed silk Thick stick servo motor；418- driven screw；

501- Barrel of Hydraulic Cylinders；502- anti-return nut；503- inserted valve；504- spring；505- hole piston；506- locking Nut；507- oil hydraulic cylinder rear cover；508- oil return opening；509- oil inlet connecting pipe；510- controls oil pocket；511- retaining ring.

Specific embodiment

Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other Embodiment shall fall within the protection scope of the present invention.

As shown in Figure 1 to Figure 3, the present invention provides a kind of injection moulding apparatus of sunshade limited block, including solid plate 1, mould Have injection device 4, interior circulation mode locking hydraulic cylinder 5 and moving template 3, through pull rod 2 is connected between solid plate 1 and moving template 3, draws The left side of bar 2 is fixedly mounted on the left side of solid plate 1 through interior circulation mode locking hydraulic cylinder 5, interior circulation mode locking hydraulic cylinder 5 is connected with On face, the inside of interior circulation mode locking hydraulic cylinder 5 passes through solid plate through shifting formwork hydraulic cylinder 6, the right end of shifting formwork hydraulic cylinder 6 is connected with 1 inner wall is fixedly connected with 3 inner wall of moving template, is also extended through between solid plate 1 and moving template 3 and is connected with mold injection device 4.

Mold injection device 4 includes connection pedestal 401, support frame 402 and injection servo motor 403, connects pedestal 401 Support frame 402 is fixedly installed on upper surface, servo is injected through injection servo motor 403 is connected in the front of support frame 402 The output shaft of motor 403 is axially connected with driven screw 418, and the left end of the driven screw 418 is axially connected with active nut 404, the outside of active nut 404 is fixedly connected by thread bush 405 with injection servo motor 403, the left end of active nut 404 Through metering adjuster 406 is connected with, the output end of metering adjuster 406 is run through by injection piston 407 is connected with check (non-return) valve 416, injection piston 407 is embedded on the inner wall of preformed machine barrel 409, is also extended through on the left side of preformed machine barrel 409 and is connected with spray Mouth 408, the left end of nozzle 408 and injection piston 407 are through connection.

It is provided with preformed screw rod 410 in the upper inside walls of preformed machine barrel 409, is also wound on the outer surface of preformed machine barrel 409 There is heating coil 411, is fixedly connected on the left of the right end and support frame 402 of preformed machine barrel 409, it is also solid on the inner wall of support frame 402 Dingan County's dress is provided with mobile bracket 413 there are two support guide 412 between two support guides 412, mobile bracket 413 it is interior Portion is inlaid with preformed screw rod servo motor 414, and the axial end of preformed screw rod servo motor 414 is axially connect with preformed screw rod 410, The right end of preformed screw rod servo motor 414 is connected with preformed lead screw 415, and the right end of preformed lead screw 415, which runs through, is connected with preformed silk Thick stick servo motor 417, preformed lead screw servo motor 417 are fixedly mounted on the right side of support frame 402.

In the present embodiment, injection servo motor 403 by 402 vertical support of support base and connect direct drive with thread bush 405 Dynamic thread bush 405 rotates, and the external screw thread of thread bush 405 is matched with the active nut 404 being fixed on bracket, forms main thread The internal screw thread of pair, thread bush 405 is matched with driven screw 408, is formed from screw thread pair, master and slave two deputy threads pair overlapped in series Differential screw mechanism is formed, the pitch difference of two screw thread pairs is differential distance, and driven screw 418 is hung down by driven screw supporting block Allotment is supportted and can be slid axially in support link, and injection piston 407 is installed in 418 end of driven screw, to carry out molten material Injection, driven screw 418 and 407 junction of injection piston installation metering adjuster 406, by controlling to adjust injection piston 407 Axial movement distance realize solution delicate metering and fast injection, the rotation direction one of active nut 404 and driven screw 418 It causes, screw pitch etc., and the screw pitch of active nut 404 is greater than the screw pitch of driven screw 418.

In the present embodiment, mold injection device 4 completes the control to injection precision using the differential gearing of helicitic texture, Concrete methods of realizing is to match the external screw thread of thread bush 405 with the active nut 404 being fixed on bracket, forms main thread The internal screw thread of pair, thread bush 405 is matched with driven screw 418, is formed from screw thread pair, master and slave two deputy threads pair overlapped in series Differential screw mechanism is formed, the pitch difference of two screw thread pairs is differential distance, the company of driven screw 418 and injection piston 407 It connects and locates installation metering adjuster 406, include analog switch inside metering adjuster 406, filtering and amplifying circuit, A/D converter, add Musical instruments used in a Buddhist or Taoist mass and processor etc.；According to injection molding process, the compensation material injection volume of setting is inputted, by displacement sensor to driven screw 418 displacement measurement is converted to the injection volume of melt, and for feedback to injection servo motor 403, the coordination measured and injected is dynamic Make, injection volume can be according to the demand of different injection-molded items and Shooting Technique, flexibly setting and adjusting, and passes through displacement sensor It quickly makes a response, therefore, injection precision can be improved in the injection device of the micro-injection molding machine of differential gearing, can be realized miniature The precise high-efficiency of plastic products forms, and structure is simple and convenient to operate.

Interior circulation mode locking hydraulic cylinder 5 includes Barrel of Hydraulic Cylinders 501 and control oil pocket 510, and the inside of Barrel of Hydraulic Cylinders 501 is passed through It wears and is connected with pull rod 2, the right end of pull rod 2 passes through inserted valve 503 through being connected on the inner wall of solid plate 1 on the outer wall of pull rod 2 It is connected with control oil pocket 510, passes through spring 504 on the inner wall of inserted valve 503 and is connected with retaining ring 511, the right side screw thread of retaining ring 511 It is connected with anti-return nut 502, anti-return nut 502, which runs through, to be connected on the outer wall of pull rod 2.

The left end of pull rod 2, which also extends through, is connected with hole piston 505, in the both ends of hole piston 505 and Barrel of Hydraulic Cylinders 501 Wall is fixedly connected, and the right side of inserted valve 503 is arranged in hole piston 505, and the right side of hole piston 505 is additionally provided with locking nut 506, locking nut 506 is through being connected on the outer wall of pull rod 2, and the left end of pull rod 2, which is run through, is connected with oil hydraulic cylinder rear cover 507, oil Cylinder pressure rear cover 507 is threaded on the left side outer wall of Barrel of Hydraulic Cylinders 501, and the lower part of oil hydraulic cylinder rear cover 507, which is run through, to be connected back to Hydraulic fluid port 508, the right side of Barrel of Hydraulic Cylinders 501, which also extends through, is connected with oil inlet connecting pipe 509.

In the present embodiment, 2 interposition of pull rod of interior circulation mode locking hydraulic cylinder 5 is equipped with one section of protrusion, and locking nut 506 is by band Hole piston 505 is fixed on this section of convex portion, several holes are provided on piston 505, are recycled for realizing in oil liquid, are drawn simultaneously Control oil pocket 510 is formed between 2 convex portion of bar and inserted valve 503, to control the unlatching of inserted valve 503, inserted valve 503 relies on bullet The elastic reset of spring 504, and inserted valve 503, spring 504, retaining ring 511 pass through the fixed position of anti-return nut 502.

In the present embodiment, after interior circulation mode locking hydraulic cylinder 5 further includes the hydraulic cylinder front cover served as by solid plate 1, hydraulic cylinder Lid 507 and Barrel of Hydraulic Cylinders 501, while control oil pocket oil circuit is set in the piston rod of hole piston 505, when shifting formwork, lead to The fuel feeding into the control oil pocket formed between 2 convex portion of pull rod and inserted valve 503 of 510 oil circuit of control oil pocket in pull rod 2 is crossed, Inserted valve 503 and hole piston 505 are separated using oil liquid pressure, if mode locking hydraulic cylinder passes through on hole piston 505 at this time Dry hole realizes the connection of left and right chamber, and hydraulic oil is another as the mobile through hole of 505 opposing pistons cylinder of hole piston is flowed to from one end End is realized in oil liquid and is recycled, and after shifting formwork, lays down the oily cavity pressure of control, inserted valve 503 is multiple under the action of spring 504 Position is in close contact with hole piston 505, and inserted valve 503 blocks the hole on hole piston 505, and then the connection of left and right chamber is logical Road is blocked, and then mold closing mechanism dynamical system supplies high pressure oil to mode locking hydraulic cylinder, realizes high-voltage lock mould, controls oil pocket 510 Interior pressure oil is entered by the oil duct opened among pull rod 2, and the piston rod of interior circulation mode locking hydraulic cylinder is simultaneously mold closing mechanism Pull rod, therefore this structure has certain requirement to the rigidity and quality of pull rod, and the oiler of four mode locking hydraulic cylinders passes through Connection oil duct in solid plate communicates with each other, and the clamp force that ensure that multiple mode locking cylinders provide is identical, prevents mold due to both sides The deformation of die cavity caused by unbalance stress.

In the present embodiment, inserted valve 503 the one end contacted with hole piston 505 have meet on piston pore diameter size and The hole of mountable spring 504 is arranged in the cylindrical slide valve of number, the other end, and the internal diameter of 503 left and right ends of inserted valve is not identical, One section of internal diameter close to hole piston 505 is identical as the diameter of 2 convex portion of pull rod, rest part internal diameter and 2 diameter phase of pull rod Together, control oil pocket 510, the contact surface of retaining ring 511 and spring 504 are formed by the convex portion of pull rod 2 and 503 internal diameter of inserted valve On corresponding hole is also processed according to the position of spring 504, size and number, be used to fixed spring 504, prevent because making for a long time Spring is led to problems such as to deviate slide valve caused by home position with the abrasion of, contact surface mobile and reset difficult.

It is obvious to a person skilled in the art that invention is not limited to the details of the above exemplary embodiments, Er Qie In the case where without departing substantially from spirit or essential attributes of the invention, the present invention can be realized in other specific forms.Therefore, no matter From the point of view of which point, the present embodiments are to be considered as illustrative and not restrictive, and the scope of the present invention is by appended power Benefit requires rather than above description limits, it is intended that all by what is fallen within the meaning and scope of the equivalent elements of the claims Variation is included within the present invention.Any reference signs in the claims should not be construed as limiting the involved claims.

Claims

1. a kind of injection moulding apparatus of sunshade limited block, including solid plate (1), mold injection device (4), interior circulation mode locking are hydraulic Cylinder (5) and moving template (3), it is characterised in that: run through between the solid plate (1) and moving template (3) and be connected with pull rod (2), institute The left side for stating pull rod (2) is fixedly mounted through interior circulation mode locking hydraulic cylinder (5), the interior circulation mode locking hydraulic cylinder (5) is connected with On the left side of solid plate (1), the inside of interior circulation mode locking hydraulic cylinder (5), which is run through, is connected with shifting formwork hydraulic cylinder (6), institute State shifting formwork hydraulic cylinder (6) right end pass through solid plate (1) inner wall be fixedly connected with moving template (3) inner wall, the solid plate (1) and It is also extended through between moving template (3) and is connected with mold injection device (4).

2. a kind of injection moulding apparatus of sunshade limited block according to claim 1, it is characterised in that: the mold injection dress Setting (4) includes connection pedestal (401), support frame (402) and injection servo motor (403), the upper table of connection pedestal (401) It is fixedly installed on face support frame (402), the front of support frame as described above (402), which is run through, is connected with injection servo motor (403), institute The output shaft for stating injection servo motor (403) is axially connected with driven screw (418), the left end shaft of the driven screw (418) To being connected with active nut (404), the outside of the active nut (404) passes through thread bush (405) and injection servo motor (403) it is fixedly connected, the left end of the active nut (404), which is run through, is connected with metering adjuster (406), the metering adjuster (406) by injection piston (407) through being connected with check (non-return) valve (416), the injection piston (407) is embedded in pre- output end On the inner wall of molding machine cylinder (409), is also extended through on the left side of the preformed machine barrel (409) and be connected with nozzle (408), the nozzle (408) left end and injection piston (407) is through connection.

3. a kind of injection moulding apparatus of sunshade limited block according to claim 2, it is characterised in that: the preformed machine barrel (409) it is provided in upper inside walls preformed screw rod (410), is also wound with heating on the outer surface of the preformed machine barrel (409) Right end and support frame (402) left side of coil (411), the preformed machine barrel (409) are fixedly connected, support frame as described above (402) There are two being also fixedly mounted on inner wall support guide (412), mobile bracket is provided between two support guides (412) (413), the inside of the mobile bracket (413) is inlaid with preformed screw rod servo motor (414), the preformed screw rod servo motor (414) axial end is axially connect with preformed screw rod (410).

4. a kind of injection moulding apparatus of sunshade limited block according to claim 3, it is characterised in that: the preformed screw rod is watched The right end for taking motor (414) is connected with preformed lead screw (415), and the right end of the preformed lead screw (415), which runs through, is connected with preformed silk Thick stick servo motor (417), the preformed lead screw servo motor (417) are fixedly mounted on the right side of support frame (402).

5. a kind of injection moulding apparatus of sunshade limited block according to claim 1, it is characterised in that: the interior circulation mode locking Hydraulic cylinder (5) includes Barrel of Hydraulic Cylinders (501) and control oil pocket (510), and the inside of the Barrel of Hydraulic Cylinders (501) is through connection Have pull rod (2), the right end of the pull rod (2) leads on the outer wall of the pull rod (2) through being connected on the inner wall of solid plate (1) It crosses inserted valve (503) and is connected with control oil pocket (510), pass through spring (504) on the inner wall of the inserted valve (503) and be connected with gear It encloses (511), is threaded with anti-return nut (502) on the right side of the retaining ring (511), the anti-return nut (502) is through connection On the outer wall of pull rod (2).

6. a kind of injection moulding apparatus of sunshade limited block according to claim 1, it is characterised in that: the pull rod (2) Left end, which also extends through, to be connected with hole piston (505), and the both ends of the hole piston (505) and Barrel of Hydraulic Cylinders (501) inner wall are solid Fixed connection, hole piston (505) setting are also set up on the right side of the right side of inserted valve (503), the hole piston (505) Have locking nut (506), the locking nut (506), which is run through, to be connected on the outer wall of pull rod (2), the left end of the pull rod (2) Through being connected with oil hydraulic cylinder rear cover (507), the oil hydraulic cylinder rear cover (507) is threaded in the left side of Barrel of Hydraulic Cylinders (501) On outer wall.

7. a kind of injection moulding apparatus of sunshade limited block according to claim 6, it is characterised in that: the oil hydraulic cylinder rear cover (507) lower part also extends through on the right side of connection oil return opening (508), the Barrel of Hydraulic Cylinders (501) is connected with oil inlet company It threads a pipe (509).