CN103934995A - Mold closing device of two-plate direct-pressing injection molding machine - Google Patents
Mold closing device of two-plate direct-pressing injection molding machine Download PDFInfo
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- CN103934995A CN103934995A CN201410128197.7A CN201410128197A CN103934995A CN 103934995 A CN103934995 A CN 103934995A CN 201410128197 A CN201410128197 A CN 201410128197A CN 103934995 A CN103934995 A CN 103934995A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/64—Mould opening, closing or clamping devices
- B29C45/67—Mould opening, closing or clamping devices hydraulic
- B29C45/6707—Mould opening, closing or clamping devices hydraulic without relative movement between the piston and the cylinder of the clamping device during the mould opening or closing movement
- B29C45/6714—Mould opening, closing or clamping devices hydraulic without relative movement between the piston and the cylinder of the clamping device during the mould opening or closing movement using a separate element transmitting the mould clamping force from the clamping cylinder to the mould
- B29C45/6721—Mould opening, closing or clamping devices hydraulic without relative movement between the piston and the cylinder of the clamping device during the mould opening or closing movement using a separate element transmitting the mould clamping force from the clamping cylinder to the mould the separate element being displaceable with respect to the mould or the clamping cylinder
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- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
Abstract
The invention discloses a mold closing device of a two-plate direct-pressing injection molding machine. The device comprises a movable mold plate, a fixed mold plate, two first mold locking oil cylinders, two second mold locking oil cylinders and mold moving oil cylinders, wherein the first mold locking oil cylinders comprise first cylinder bodies, first pistons and first mold locking piston rods; oil passages are arranged on the first cylinder bodies; the first mold locking piston rods are provided with valve cores; the second mold locking oil cylinders comprise second cylinder bodies, second pistons and second mold locking piston rods; vent holes are formed in the second cylinder bodies; the first cylinder bodies and the second cylinder bodies are communicated through connecting pipes; the sum of the normal sectional areas of oil chambers at the sides, where the first mold locking piston rods are located, in the first mold locking oil cylinders and the normal sectional areas of oil chambers at the sides, where the second mold locking piston rods are located, in the second mold locking oil cylinders is equal to the normal sectional areas of oil chambers at the opposite sides of the first mold locking piston rods, in the first mold locking oil cylinders. The mold closing device of two-plate direct-pressing injection molding machine, disclosed by the invention, has the characteristics of simple structure, high mold opening/closing speed, stability in mold locking and long service life.
Description
Technical field
The present invention relates to a kind of building block of injection machine, specially refer to a kind of mold closing mechanism of two plate direct press type injection moulding machines.
Background technology
Two plate direct press type injection moulding machines have advantages of locked mode excellent performance, efficient, energy-conservation, and the mould-locking structure that it is special and excellent kinetic characteristic are specially adapted to the injection mo(u)lding of accurate particular product.At present, the Typical Representative of interior circulation two plate direct press type injection moulding machine mold closing mechanisms is the double-plate matched mould apparatus (patent No. is US5336462) that German device fabrication business Krauss Maffei company produces.This mold closing mechanism adopts four cylinders directly to lock, piston rod (pull bar) inside in two Mode-locking oil cylinders at one group of diagonal angle is provided with mould shifting oil cylinder, two Mode-locking oil cylinders at another group diagonal angle are interior circulating oil cylinder, in piston, are provided with keying spool and can make piston both sides be communicated with.Be characterized in that speed of moving mold is fast, locked mode is stable, and energy-saving effect is obvious.But Tiebar structure complexity, not only processing and manufacturing required precision is high, difficulty is large, and owing to offering mould shifting oil cylinder in pull bar, has reduced widely the strength and stiffness of mold closing mechanism.
In addition, the patent No. is that 200920265549.8 utility model patent two-plate type direct-pressure mold discloses a kind of clamping apparatus, locked mode adopts four oil cylinders, pull bar is single-piston rod structure, wherein three Mode-locking oil cylinders are interior circulating oil cylinder, the rodless cavity of another Mode-locking oil cylinder communicates with air, and the swept volume that can realize piston left and right sides oil pocket is identical.When mould assembling action, the fluid of oil cylinder does not need oil extraction or few oil extraction oil return case, need be from fuel tank oil suction or few oil suction when die sinking action yet.But because three oil cylinders are different with the structure of another one oil cylinder, boosting in folding mold process be large with pressure release difference, have the unsettled shortcoming of the even action of unbalance stress, increase the risk that rod fracture accident occurs, therefore its service life is generally not long.
Summary of the invention
The technical problem to be solved in the present invention be to provide a kind of simple in structure, strength and stiffness are high, open that closure pressing speed is fast, locked mode is stable and the mold closing mechanism of two plate direct press type injection moulding machines of long service life.
According to an aspect of the present invention, a kind of mold closing mechanism of two plate direct press type injection moulding machines is provided, comprise moving platen, solid plate, two the first Mode-locking oil cylinders, two the second Mode-locking oil cylinders and mould shifting oil cylinder, two described the first Mode-locking oil cylinders are symmetrically set on solid plate, two described the second Mode-locking oil cylinders are symmetrically set on solid plate, the cylinder body of mould shifting oil cylinder is located on solid plate, its shifting formwork piston rod is connected with moving platen, the first Mode-locking oil cylinder comprises the first cylinder body of being located on solid plate, be sheathed on the first locking piston bar that first piston in the first cylinder body and one end are connected with first piston, the other end of this first locking piston bar is connected with moving platen, on first piston, offer oil canal, the first locking piston bar is provided with the spool matching with oil canal, the second Mode-locking oil cylinder comprises the second cylinder body of being located on solid plate, be set in the second locking piston bar that the second piston in the second cylinder body and one end are connected with the second piston, the other end of this second locking piston bar is connected with moving platen, on the second cylinder body of the second locking piston bar opposite side, offer passage, between the first cylinder body and the second cylinder body, be connected by tube connector, the normal section area sum of the oil pocket of the second locking piston bar place side in the normal section area of the oil pocket of the first locking piston bar place side and the second Mode-locking oil cylinder in the first Mode-locking oil cylinder, equal the normal section area of the oil pocket of the first locking piston bar opposite side in the first Mode-locking oil cylinder.
The beneficial effect of the mold closing mechanism of a kind of two plate direct press type injection moulding machines of the present invention is: because the first locking piston bar of the first Mode-locking oil cylinder and the second locking piston bar of the second Mode-locking oil cylinder are all connected with moving platen, in shifting formwork process, the action of the second piston of the first piston of the first Mode-locking oil cylinder and the second Mode-locking oil cylinder is synchronous, the normal section area sum of the oil pocket of the normal section area of the oil pocket of the first locking piston bar place side and interior the second locking piston bar place side of the second Mode-locking oil cylinder in the first Mode-locking oil cylinder simultaneously, equal the normal section area of the oil pocket of the first locking piston bar opposite side in the first Mode-locking oil cylinder, and in the first Mode-locking oil cylinder, the oil pocket of the first locking piston bar place side is connected by tube connector with the oil pocket of the second locking piston bar place side in the second Mode-locking oil cylinder, therefore in shifting formwork process, can realize " the interior circulation " of hydraulic oil in the first Mode-locking oil cylinder and the second Mode-locking oil cylinder, while being matched moulds, only a small amount of hydraulic oil need be flow back to fuel tank, when die sinking, only need draw a small amount of hydraulic oil from fuel tank, thereby energy consumption is low, pressure rising time is short, there is efficient energy-saving, therefore the mold closing mechanism of a kind of two plate direct press type injection moulding machines of the present invention has simple in structure, energy consumption is low, the advantage that pressure rising time is short.
In some embodiments, the first locked mode oil pocket is divided into the first rod chamber and the first rodless cavity by first piston, the first rod chamber and the first rodless cavity are connected by oil canal, the second locked mode oil pocket is divided into the second rod chamber and the second rodless cavity by the second piston, the second rodless cavity is connected with passage, and the first rod chamber is connected by tube connector with the second rod chamber.Because the first rod chamber is connected by tube connector with the second rod chamber, the second rodless cavity is connected with passage, therefore in shifting formwork process, in two the first rod chambers and two the second rod chambers, swept volume summation approximates the swept volume summation of two rodless cavities, in shifting formwork process, the second rodless cavity is communicated with ambient atmosphere, not any resistance of output simultaneously, therefore the mold closing mechanism of a kind of two plate direct press type injection moulding machines of the present invention has advantages of simple in structure and practical
In some embodiments, tube connector can be located on solid plate.The structure of the mold closing mechanism of a kind of two plate direct press type injection moulding machines of the present invention is more firm, compact thus.
In some embodiments, the wall that surrounds described oil canal can be the conical surface, and spool one end corresponding with oil canal is the cone structure matching with oil canal, and spool is provided with groove.By controlling the spool of vertebral body structure and the cone match of oil canal, can ensure the liquid sealing between spool and oil canal, in the cone segments of spool, offer the groove of pressure release effect simultaneously, can make in-oil cylinder high pressure be discharged in advance, before die sinking, there is the effect of first opening a sluice gate pressure release, make die sinking action action smooth and easy and steady, therefore the mold closing mechanism of a kind of two plate direct press type injection moulding machines of the present invention has the smooth and easy and advantage stably of good seal performance, die sinking action action.
In some embodiments; can also comprise control oil cylinder; this control oil cylinder is connected with the first locking piston bar; and be positioned at the one end at moving platen place; this control oil cylinder comprises the 3rd cylinder body being connected with the first locking piston bar, the control piston bar that is sheathed on the 3rd piston in the 3rd cylinder body and is connected with the 3rd piston; this control piston bar is positioned at the inside of the first locking piston bar, and its one end is connected with spool.Owing to being connected with spool by the control piston bar of controlling oil cylinder, by controlling the switch of the direct driver's valve core of oil cylinder, control reaction fast, and good airproof performance between spool and oil canal while closing, can not produce leakage, and make system pressure energy long term maintenance stable, therefore the mold closing mechanism of a kind of two plate direct press type injection moulding machines of the present invention has good airproof performance and controls swift advantage.
In some embodiments, in control piston bar, be provided with pressurizing chamber, control piston bar is provided with the oil duct being connected with pressurizing chamber.Owing to being provided with pressurizing chamber in control piston bar, and this pressurizing chamber can be communicated with extraneous hydraulic oil by the oil duct on control piston bar, now in pressurizing chamber, can produce the pressure that points to spool direction, spool and oil canal are pressed together more closely, further optimize sealing between spool and oil canal, therefore the mold closing mechanism of a kind of two plate direct press type injection moulding machines of the present invention has advantages of good airproof performance and practical.
In some embodiments, mould shifting oil cylinder can be two, and two described mould shifting oil cylinders are symmetrically set on solid plate.By the mating reaction of two symmetrically arranged mould shifting oil cylinders, can ensure that body is stressed more even in the course of the work, can effectively promote the service life of the mold closing mechanism of a kind of two plate direct press type injection moulding machines of the present invention.
In some embodiments, two described the first Mode-locking oil cylinders are symmetrically set in two diagonal angles place of solid plate, two described the second Mode-locking oil cylinders are symmetrically set in two other diagonal angle place of solid plate, and two described mould shifting oil cylinders are symmetrically set in the diagonal angle place at two the second Mode-locking oil cylinder places.Due to the first Mode-locking oil cylinder, the second Mode-locking oil cylinder and mould shifting oil cylinder be two and mutually correspondence be arranged on solid plate, therefore the mold closing mechanism of a kind of two plate direct press type injection moulding machines of the present invention in the course of the work, have advantages of that strength and stiffness are high, stressed evenly, locked mode precision is high, use reliable and stable and long service life; Mould shifting oil cylinder is arranged on to the close position of the second Mode-locking oil cylinder simultaneously, can plays offset resistance and ensure that shifting formwork balance acts on uniformly, can further promote practicality and the service life of the mold closing mechanism of a kind of two plate direct press type injection moulding machines of the present invention.
In some embodiments, on solid plate, can be provided with cooling water pipe, this cooling water pipe is set around around the first Mode-locking oil cylinder and the second Mode-locking oil cylinder.Owing to offering cooling water pipe at the first Mode-locking oil cylinder and the second Mode-locking oil cylinder outside in solid plate, cooling water in this cooling water pipe can be taken away the fluid high temperature that circulates in the radiant heat of injection machine machine barrel nozzle heating circle and oil cylinder, the long-term stability that has ensured the stable and clamp force of the long-term operating condition of mould-locking structure, therefore the mold closing mechanism of a kind of two plate direct press type injection moulding machines of the present invention has advantages of the reliable and stable and long service life of use.
Brief description of the drawings
Fig. 1 is the structural representation of a kind of embodiment of mold closing mechanism of a kind of two plate direct press type injection moulding machines of the present invention;
Fig. 2 is that the mold closing mechanism of a kind of two plate direct press type injection moulding machines in Fig. 1 is along the cutaway view of I-I;
Fig. 3 is the partial enlarged drawing of a kind of mold closing mechanism a-quadrant of two plate direct press type injection moulding machines in Fig. 2;
Fig. 4 is the partial enlarged drawing in the mold closing mechanism B region of a kind of two plate direct press type injection moulding machines in Fig. 2.
Detailed description of the invention
Below in conjunction with accompanying drawing, the present invention is described in further detail.
Fig. 1 to Fig. 4 has provided one embodiment of the present of invention, in this embodiment, the mold closing mechanism of a kind of two plate direct press type injection moulding machines of the present invention comprises moving platen 1, solid plate 2, two the first Mode-locking oil cylinders 3, two the second Mode-locking oil cylinders 4, mould shifting oil cylinder 5 and two control oil cylinders 7, the cross section of solid plate 2 is rectangular configuration, two the first Mode-locking oil cylinders 3 are symmetrically set in two diagonal angles place of solid plate 2, two the second Mode-locking oil cylinders 4 are symmetrically set in two other diagonal angle place of solid plate 2, two mould shifting oil cylinders 5 are symmetrically set in the diagonal angle place at two the second Mode-locking oil cylinder 4 places, the first Mode-locking oil cylinder 3 comprises the first cylinder body 31 of being located on solid plate 2, be sheathed on the first locking piston bar 33 that first piston 32 in the first cylinder body 31 and one end are connected with first piston 32, the other end of the first locking piston bar 33 is screwed and is connected with moving platen 1, on first piston 32, offer oil canal 321, the first locking piston bar 33 is connected with the spool 331 matching with oil canal 321, the second Mode-locking oil cylinder 4 comprises the second cylinder body 41 of being located on solid plate 2, be set in the second locking piston bar 43 that the second piston 42 in the second cylinder body 41 and one end are connected with the second piston 42, the other end of the second locking piston bar 43 and moving platen 1 are fixedly linked by key, the first cylinder body 31 of the first Mode-locking oil cylinder 3, the second cylinder body 41 of the second Mode-locking oil cylinder 4 and solid plate 2 structure that is formed in one, the cylinder body 51 of mould shifting oil cylinder 5 is screwed and is connected on solid plate 2, its shifting formwork piston rod 52 is screwed and is connected with moving platen 1.
On solid plate 2, offer tube connector 6; the chamber that the chamber that tube connector 6 forms the first cylinder body 31 and the second cylinder body 41 form is connected; the normal section area sum of the oil pocket of the second locking piston bar 43 place sides in the normal section area of the oil pocket of the first locking piston bar 33 place sides and the second Mode-locking oil cylinder 4 in the first Mode-locking oil cylinder 3, equals the normal section area of the oil pocket of first Mode-locking oil cylinder 3 interior the first locking piston bar 33 opposite sides.More particularly, the inner chamber of the first Mode-locking oil cylinder 3 is divided into the first rod chamber 34 and the first rodless cavity 35 by first piston 32, the first rod chamber 34 and the first rodless cavity 35 are connected by oil canal 321, the second Mode-locking oil cylinder 4 is divided into the second rod chamber 44 and the second rodless cavity 45 by the second piston 42, on the second cylinder body 41 of the second locking piston bar 43 opposite sides, offer passage 411, the second rodless cavity 45 is connected with atmosphere by passage 411, the first rod chamber 34 is connected by tube connector 6 with the second rod chamber 44, the normal section area sum of the oil pocket of the normal section area of the oil pocket of two the first rod chambers 34 and two the second rod chambers 35 equals the normal section area of the oil pocket of two the first rodless cavities.Therefore in shifting formwork process, in two the first rod chambers 34 and two the second rod chambers 35, swept volume summation equals the swept volume summation of two the first rodless cavities 35, realizes the interior circulation of equivalent of hydraulic oil in two the first Mode-locking oil cylinders 3 and two the second Mode-locking oil cylinders 4.While being matched moulds, only a small amount of hydraulic oil need be flow back to fuel tank, only need draw a small amount of hydraulic oil from fuel tank, thereby energy consumption be low when die sinking, pressure rising time is short, has advantages of efficient energy-saving.
The wall that surrounds described oil canal 321 is the conical surface, spool 331 one end corresponding with oil canal 321 is the cone structure matching with oil canal 321, controlling oil cylinder 7 is connected with the first locking piston bar 33, and be positioned at the one end at moving platen 1 place, controlling oil cylinder 7 comprises with the first locking piston bar 33 and is screwed the 3rd cylinder body 71 being connected, the control piston bar 73 that is sheathed on the 3rd piston 72 in the 3rd cylinder body 71 and is connected with the 3rd piston 72, the first locking piston bar 33 is hollow structure, control piston bar 73 is positioned at the inside of the first locking piston bar 33, its one end is screwed and is connected with spool 331, the other end runs through the 3rd cylinder body 71, as shown in Figure 2, the upper end of spool 331 is column structure, lower end is cone structure, the upper end of spool 331 is socketed on the first locking piston bar 33 lower ends, and be connected with the first locking piston bar 33 activities and liquid sealing, meet under the draw power of control piston bar 73, spool 331 can slide by the vertical direction with respect to the first locking piston bar 33, thereby can realize in the time wanting locked mode, first control the lower end of spool 331 and the wall liquid sealing of oil canal 321 coordinates, being about to the first rod chamber 34 and the first rodless cavity 35 separates, pass into again high pressure liquid force feed contracting mould, in the time wanting shifting formwork, the lower end of first controlling spool 331 separates with the wall of oil canal 321, and the first rod chamber 34 and the first rodless cavity 35 are communicated with, then complete die sinking under the draw power of mould shifting oil cylinder 5.Meanwhile, in shifting formwork process, between spool 331, first piston 32 and the first locking piston bar 33, be relatively static, and they slide along the first cylinder body 31 together.In control piston bar 73, be provided with pressurizing chamber 731, control piston bar 73 runs through on one end of the 3rd cylinder body 71 and offers the oil duct 732 being connected with pressurizing chamber 731.The control piston bar 73 of controlling oil cylinder 7 is connected with spool 331, control oil cylinder 7 is divided into the first oil pocket 74 and the second oil pocket 75 by the 3rd piston 72, when pass into hydraulic oil in the first oil pocket 74 time, the 3rd piston 72 drives control piston bar 73 to move downward, now spool 331 is driven and moves downward by control piston rod 73, thereby compress oil canal 321, now spool 331 coordinates with the wall liquid sealing of oil canal 321, the first rod chamber 34 and second rodless cavity 35 of first piston 32 both sides are not communicated with, allow again the first rod chamber 34 and the second rod chamber 44 be communicated with hydraulic oil, will give 1 one clamp forces of moving platen, reach the technique effect of locked mode.In order better to realize the locked mode effect of spool 331, in the logical hydraulic oil of the first oil pocket 74, in pressurizing chamber 731, pass into hydraulic oil by oil duct 732, now can further give 331 1 downward pressure of spool, make wall pressing tightr of spool 331 and oil canal 321, corresponding liquid sealing effect also can be better, is also that locked mode effect also can promote greatly.
On spool 331, offer annular groove 332, the cross section of groove 332 is inverted L-shaped, in the time of needs die sinking, in the first oil pocket 74 and pressurizing chamber 731, stop passing into hydraulic oil, now the hydraulic oil in the first rod chamber 34 upwards pressure to one, the horizontal plane of groove 332, and under the effect of this pressure, the high pressure in the first Mode-locking oil cylinder is discharged in advance, before die sinking, there is the effect of first opening a sluice gate pressure release, also make die sinking action action smooth and easy and steady.
Solid plate 2 is provided with cooling water pipe 8, cooling water pipe 8 is set around around the first cylinder body 31 of the first Mode-locking oil cylinder 3 and the second cylinder body 41 of the second Mode-locking oil cylinder 4, cooling water in cooling water pipe 8 can be taken away the fluid high temperature that circulates in the radiant heat of injection machine machine barrel nozzle heating circle and oil cylinder, has ensured the long-term stability of the stable and clamp force of the long-term operating condition of mould-locking structure.
The mold closing mechanism of a kind of two plate direct press type injection moulding machines of the present invention in use, when matched moulds, in two mould shifting oil cylinders 5, pass into hydraulic oil, the traction of the shifting formwork piston rod 52 by mould shifting oil cylinder 5, allow moving platen 1 move to the direction at solid plate 2 places, now first piston 32 and the second piston 42 are servo-actuated, hydraulic oil in the first rodless cavity 35 enters into the first rod chamber 34 and the second rod chamber 44 by oil canal 321, hydraulic oil in the first Mode-locking oil cylinder 3 and the second Mode-locking oil cylinder 4 in circulation, after shifting formwork piston rod 52 draws moving platen 1 and moves into place, in mould shifting oil cylinder 5, stop passing into hydraulic oil, simultaneously, in the first oil pocket 74 of control oil cylinder, pass into hydraulic oil, the 3rd piston 72 drives control piston bar 73 to move downward, now spool 331 is driven and moves downward by control piston rod 73, thereby compress oil canal 321, in pressurizing chamber 731, pass into hydraulic oil by oil duct 732 on the other hand, now can further give 331 1 downward pressure of spool, make wall pressing tightr of spool 331 and oil canal 321, now between the first rodless cavity 35 and the first rod chamber 34, disconnect and being communicated with, after spool 331 coordinates with oil canal 321 liquid sealings, in the first rod chamber 34 and the second rod chamber 44, pass into high pressure liquid force feed by tube connector 6, now the first locking piston bar 33 and the second locking piston bar 43 will be given 1 one clamp forces of moving platen, realize locked mode.
When die sinking, first stop to controlling logical high pressure liquid force feed in the first oil pocket 74 of oil cylinder 7 and pressurizing chamber 731, now the hydraulic oil in the first rod chamber 34 upwards pressure to one, the horizontal plane of the groove 332 on spool 331, under the effect of this pressure, the high pressure in the first Mode-locking oil cylinder 3 and the second Mode-locking oil cylinder 4 is released; In the second oil pocket 75 of control oil cylinder 7, pass into high pressure liquid force feed again, the control piston bar 73 of now controlling oil cylinder 7 can move upward by traction spool 331, make spool 331 and oil canal 321 separate, the first rod chamber 34 and the second rodless cavity 35 are connected by oil canal 321; In the most backward two mould shifting oil cylinders 5, pass into hydraulic oil; the traction of the shifting formwork piston rod 52 by mould shifting oil cylinder 5; allow moving platen 1 to the direction motion away from solid plate 2; now first piston 32 and the second piston 42 are servo-actuated; hydraulic oil in the first rod chamber 34 and the second rod chamber 44 enters into the first rodless cavity 35 by oil canal 321; be hydraulic oil in the first Mode-locking oil cylinder 3 and the second Mode-locking oil cylinder 4 in circulation, die sinking has been moved.
In actual use simultaneously, the present invention also can work under " interior circulation " pattern, can be according to working condition, customer demand, the strength of materials, open closure pressing speed, hydraulic oil quality, the factor that service life etc. are different, without changing overall structure, only the piston diameter to Mode-locking oil cylinder and diameter of piston rod carry out certain adjusting, thereby the ratio between diameter of piston rod and piston diameter is changed, thereby there is multiple use pattern, there is wider using adaptability, be applicable to injection machine, the multiple matched moulds machine such as die casting machine, include but not limited to interior circulation two plate direct press type injection moulding machines.
Below be only the preferred embodiment of the present invention, it should be pointed out that for the person of ordinary skill of the art, without departing from the concept of the premise of the invention, can also make some distortion and improvement, these all belong to protection scope of the present invention.
Claims (9)
1. the mold closing mechanism of a plate direct press type injection moulding machine, wherein, comprise moving platen (1), solid plate (2), two the first Mode-locking oil cylinders (3), two the second Mode-locking oil cylinders (4) and mould shifting oil cylinder (5), two described the first Mode-locking oil cylinders (3) are symmetrically set on solid plate (2), two described the second Mode-locking oil cylinders (4) are symmetrically set on solid plate (2), the cylinder body of described mould shifting oil cylinder (5) is located on solid plate (2), its shifting formwork piston rod is connected with moving platen (1), described the first Mode-locking oil cylinder (3) comprises the first cylinder body (31) of being located on solid plate (2), be sheathed on the first locking piston bar (33) that the interior first piston (32) of the first cylinder body (31) and one end are connected with first piston (32), the other end of described the first locking piston bar (33) is connected with moving platen (1), on described first piston (32), offer oil canal (321), described the first locking piston bar (33) is provided with the spool (331) matching with oil canal (321), described the second Mode-locking oil cylinder (4) comprises the second cylinder body (41) of being located on solid plate (2), be set in the second locking piston bar (43) that interior the second piston (42) of the second cylinder body (41) and one end are connected with the second piston (42), the other end of described the second locking piston bar (43) is connected with moving platen (1), on second cylinder body (41) of described the second locking piston bar (43) opposite side, offer passage (411), between described the first cylinder body (31) and the second cylinder body (41), be connected by tube connector (6), the normal section area sum of the oil pocket of the second locking piston bar (43) place side in the normal section area of the oil pocket of the first locking piston bar (33) place side and the second Mode-locking oil cylinder (4) in described the first Mode-locking oil cylinder (3), equal the normal section area of the oil pocket of the first locking piston bar (33) opposite side in the first Mode-locking oil cylinder (3).
2. the mold closing mechanism of a kind of two plate direct press type injection moulding machines according to claim 1, wherein, the first locked mode oil pocket (3) is divided into the first rod chamber (34) and the first rodless cavity (35) by described first piston (32), described the first rod chamber (34) and the first rodless cavity (35) are connected by oil canal (321), the second locked mode oil pocket (4) is divided into the second rod chamber (44) and the second rodless cavity (45) by described the second piston (42), described the second rodless cavity (45) is connected with passage (411), described the first rod chamber (34) is connected by tube connector (6) with the second rod chamber (44).
3. the mold closing mechanism of a kind of two plate direct press type injection moulding machines according to claim 2, wherein, described tube connector (6) is located on solid plate (2).
4. the mold closing mechanism of a kind of two plate direct press type injection moulding machines according to claim 1, wherein, the wall that surrounds described oil canal (321) is the conical surface, described spool (331) one end corresponding with oil canal (321) is the cone structure matching with oil canal (321), and described spool (331) is provided with groove (332).
5. the mold closing mechanism of a kind of two plate direct press type injection moulding machines according to claim 4, wherein, also comprise and control oil cylinder (7), described control oil cylinder (7) is connected with the first locking piston bar (33), and be positioned at the one end at moving platen (1) place, described control oil cylinder (7) comprises the 3rd cylinder body (71) being connected with the first locking piston bar (33), be sheathed on the 3rd piston (72) in the 3rd cylinder body (71) and the control piston bar (73) being connected with the 3rd piston (72), described control piston bar (73) is positioned at the inside of the first locking piston bar (33), and its one end is connected with spool (331).
6. the mold closing mechanism of a kind of two plate direct press type injection moulding machines according to claim 5, wherein, is provided with pressurizing chamber (731) in described control piston bar (73), described control piston bar (73) is provided with the oil duct (732) being connected with pressurizing chamber (731).
7. the mold closing mechanism of a kind of two plate direct press type injection moulding machines according to claim 1, wherein, described mould shifting oil cylinder (5) is two, two described mould shifting oil cylinders (5) are symmetrically set on solid plate (2).
8. the mold closing mechanism of a kind of two plate direct press type injection moulding machines according to claim 7, wherein, two described the first Mode-locking oil cylinders (3) are symmetrically set in two diagonal angles place of solid plate (2), two described the second Mode-locking oil cylinders (4) are symmetrically set in two other diagonal angle place of solid plate (2), and two described mould shifting oil cylinders (5) are symmetrically set in the diagonal angle place at two the second Mode-locking oil cylinders (4) place.
9. according to the mold closing mechanism of a kind of two plate direct press type injection moulding machines described in claim 1～8 any one, wherein, described solid plate (2) is provided with cooling water pipe (8), and described cooling water pipe (8) is set around the first Mode-locking oil cylinder (3) and the second Mode-locking oil cylinder (4) around.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410128197.7A CN103934995B (en) | 2014-04-01 | 2014-04-01 | Mold closing device of two-plate direct-pressing injection molding machine |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410128197.7A CN103934995B (en) | 2014-04-01 | 2014-04-01 | Mold closing device of two-plate direct-pressing injection molding machine |
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| CN103934995A true CN103934995A (en) | 2014-07-23 |
| CN103934995B CN103934995B (en) | 2017-01-18 |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5336462A (en) * | 1992-03-23 | 1994-08-09 | Krauss-Maffei Ag | Mold-closing apparatus for injection-molding machine |
| CN101927539A (en) * | 2009-06-26 | 2010-12-29 | 北京化工大学 | Isometric replaceable four-cylinder line-lock two-plate type mould clamping mechanism |
| CN201848983U (en) * | 2009-12-25 | 2011-06-01 | 黄步明 | Two-plate type direct-pressure mold-locking device |
| CN103538224A (en) * | 2013-09-29 | 2014-01-29 | 广东正茂精机有限公司 | Mould closing apparatus of two-plate vertical compression type injection molding machine |
| CN203765977U (en) * | 2014-04-01 | 2014-08-13 | 广东正茂精机有限公司 | Mold closing device of two-plate direct pressure injection molding machine |
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2014
- 2014-04-01 CN CN201410128197.7A patent/CN103934995B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5336462A (en) * | 1992-03-23 | 1994-08-09 | Krauss-Maffei Ag | Mold-closing apparatus for injection-molding machine |
| CN101927539A (en) * | 2009-06-26 | 2010-12-29 | 北京化工大学 | Isometric replaceable four-cylinder line-lock two-plate type mould clamping mechanism |
| CN201848983U (en) * | 2009-12-25 | 2011-06-01 | 黄步明 | Two-plate type direct-pressure mold-locking device |
| CN103538224A (en) * | 2013-09-29 | 2014-01-29 | 广东正茂精机有限公司 | Mould closing apparatus of two-plate vertical compression type injection molding machine |
| CN203765977U (en) * | 2014-04-01 | 2014-08-13 | 广东正茂精机有限公司 | Mold closing device of two-plate direct pressure injection molding machine |
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