CN104070646A - Injection molding machine - Google Patents
Injection molding machine Download PDFInfo
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- CN104070646A CN104070646A CN201410028445.0A CN201410028445A CN104070646A CN 104070646 A CN104070646 A CN 104070646A CN 201410028445 A CN201410028445 A CN 201410028445A CN 104070646 A CN104070646 A CN 104070646A
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- main part
- rear fender
- fixation clip
- support
- pressure plate
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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
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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
- B29C45/26—Moulds
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
Abstract
The invention provides an injection molding machine which can maintain the balance of a mold clamping force. The injection molding machine is provided with a first part (13), a second part (18), and more than one connecting part (19) connecting the first and second parts (13, 18). A first distance (L1), between the center of an installation position of the connecting parts (19) of the first part (13) and a frame (11), changes along with the temperature of the first part (13). A second distance (L2), between the center of an installation position of the connecting parts (19) of the second part (18) and the frame (11), changes along with the temperature of the second part (18). The coefficient of thermal expansion of at least one part of the first part (13) is less than the coefficient of thermal expansion of at least one part of the second part (18), so as to enable the difference between the first distance (L1) and the second distance (L2) to be shorter when the temperature of the first part (13) is higher than the temperature of the second part (18) than that when the first and second parts (13, 18) are made of materials with the same coefficient of thermal expansion.
Description
Technical field
The application advocates the priority of No. 2013-072868th, Japanese patent application based on March 29th, 2013 application.The full content of its application is by reference to being applied in this description.
The present invention relates to a kind of injection (mo(u)lding) machine.
Background technology
Injection (mo(u)lding) machine has the mold closing mechanism of mold closing, matched moulds and the die sinking of carrying out die device.Die device consists of cover half and dynamic model etc., mold closing mechanism have the fixation clip of cover half is installed and be provided with dynamic model can dynamic pressure plate etc. (for example referring to Patent Document 1).
Patent documentation 1: No. 2005/090052nd, International Publication
In the past, existing matched moulds equilibrium of forces destroyed, there is the situation of the products formed degradation such as flash around in products formed.
Summary of the invention
The present invention completes in view of above-mentioned problem, and its object is to provide a kind of injection (mo(u)lding) machine that can maintain matched moulds equilibrium of forces.
In order to solve above-mentioned problem, a mode according to the present invention provides a kind of injection (mo(u)lding) machine, and it possesses: the 1st parts, extend to a side contrary with framework along with the rising of temperature, the 2nd parts, extend to a side contrary with described framework along with the rising of temperature, and 1 above connecting member, link described the 1st parts and described the 2nd parts, the 1st distance described in described the 1st parts between the center of the installation site of 1 above connecting member and described framework is along with the temperature of described the 1st parts changes, the 2nd distance described in described the 2nd parts between the center of the installation site of 1 above connecting member and described framework is along with the temperature of described the 2nd parts changes, the thermal coefficient of expansion of at least a portion of described the 1st parts is lower than the thermal coefficient of expansion of at least a portion of described the 2nd parts, so that when the temperature of described the 1st parts becomes higher than the temperature of described the 2nd parts, while being formed by the identical material of thermal coefficient of expansion with described the 2nd parts with described the 1st parts, compare, described the 1st distance diminishes with the variation of the difference of described the 2nd distance.
Invention effect
According to the invention provides a kind of injection (mo(u)lding) machine that can maintain matched moulds equilibrium of forces.
Accompanying drawing explanation
The figure of state when Fig. 1 finishes for the injection (mo(u)lding) machine mold closing of expression based on the 1st embodiment of the present invention.
The figure of state when Fig. 2 finishes for the injection (mo(u)lding) machine die sinking of expression based on the 1st embodiment of the present invention.
Fig. 3 observes the figure of the fixation clip based on the 1st embodiment of the present invention from rear.
Fig. 4 be from rear, observe based on the 1st embodiment of the present invention can dynamic pressure plate figure.
Fig. 5 is the figure of the rear fender based on the 1st embodiment of the present invention from forward observation.
Fig. 6 observes the figure of the adsorption element based on the 1st embodiment of the present invention from rear.
The figure of the state when injection (mo(u)lding) machine die sinking that Fig. 7 is the variation of expression based on the 1st embodiment of the present invention finishes.
The figure of state when Fig. 8 finishes for the injection (mo(u)lding) machine mold closing of expression based on the 2nd embodiment of the present invention.
The figure of state when Fig. 9 finishes for the injection (mo(u)lding) machine die sinking of expression based on the 2nd embodiment of the present invention.
In figure: 10-mold closing mechanism, 11-framework, 12-fixation clip, 12a-fixation clip main part, 12b-fixation clip support, 13-can dynamic pressure plate (the 1st parts), 13a-can dynamic pressure plate main part, 13b-can dynamic pressure plate support, 15-rear fender, 15a-rear fender main part, 15b-rear fender support, 16-connecting rod, 18-adsorption element (the 2nd parts), 18a-adsorption element main part, 18b-adsorption element support, 19-bar (connecting member), 21-linear motor, 24-mold clamping force generating unit, 25-electromagnet, 26-adsorption section, 30-die device, 32-cover half, 33-dynamic model.
The specific embodiment
Below, with reference to accompanying drawing, to describing for implementing mode of the present invention, in each accompanying drawing, identical or corresponding structure is added to identical or corresponding symbol so that description thereof is omitted.And, when carrying out mold closing can dynamic pressure plate moving direction as the place ahead, when carrying out die sinking can dynamic pressure plate moving direction as rear, describe.And, the direction vertical with respect to framework described as above-below direction.Fore-and-aft direction, above-below direction and left and right directions are orthogonal direction.In addition, the injection (mo(u)lding) machine of present embodiment is horizontal, but can be also vertical.
[the 1st embodiment]
The figure of state when Fig. 1 finishes for the injection (mo(u)lding) machine mold closing of expression based on the 1st embodiment of the present invention.The figure of state when Fig. 2 finishes for the injection (mo(u)lding) machine die sinking of expression based on the 1st embodiment of the present invention.In Fig. 2, state when solid line represents based on present embodiment moulding, the state while representing moulding is in the past amplified in single-point line.In the past, can dynamic pressure plate and adsorption element for example, by the roughly the same material of thermal coefficient of expansion (iron), formed.
Injection (mo(u)lding) machine possesses the mold closing mechanism 10 of mold closing, matched moulds and the die sinking of carrying out die device 30 etc.Die device 30 for example consists of cover half 32 and dynamic model 33.
Mold closing mechanism 10 have framework 11, fixation clip 12, can dynamic pressure plate 13, rear fender 15, connecting rod 16, adsorption element 18, bar 19, as the linear motor 21 of mould driven for opening and closing portion and mold clamping force generating unit 24 etc.
Fixation clip 12 loads on framework 11 free to advance or retreatly.On the mould installed surface of fixation clip 12, cover half 32 is installed.
Can be fixed on the guide pad 14 for example, moving freely along the guiding piece (guide rail) 17 being layed on framework 11 by dynamic pressure plate 13.Thus, can dynamic pressure plate 13 free to advance or retreat with respect to framework 11.Can on the mould installed surface of dynamic pressure plate 13, dynamic model 33 be installed.
Rear fender 15 for example, links via many (4) connecting rods 16 and fixation clip 12.Rear fender 15 be equipped on can dynamic pressure plate 13 and adsorption element 18 between, and be fixed on framework 11.
Adsorption element 18 via bar 19 with can link by dynamic pressure plate 13, and with can together with dynamic pressure plate 13, move.Be equipped on can dynamic pressure plate 13 and adsorption element 18 between rear fender 15 on be formed with for bar 19 and insert the slotting perforation of wearing.
Adsorption element 18 is fixed on along the guiding piece 17 being layed on framework 11 and moves glide base 20 freely.Thus, adsorption element 18 is more moving freely by rear than rear fender 15.
Linear motor 21 makes to link via bar 19 can dynamic pressure plate 13 and adsorption element 18 with respect to framework 11, move.Linear motor 21 is for example equipped between adsorption element 18 and framework 11, and the thrust based on linear motor 21 is delivered to via adsorption element 18 can dynamic pressure plate 13.
In addition, linear motor 21 can be equipped on can dynamic pressure plate 13 and framework 11 between, the thrust based on linear motor 21 can be via being delivered to adsorption element 18 by dynamic pressure plate 13.
Linear motor 21 comprises fixture 22 and movable piece 23.Fixture 22 is formed at framework 11, and movable piece 23 is formed at glide base 20.If supply with rated current to the coil of movable piece 23, under the interaction in the magnetic field forming at the electric current formed magnetic field by flowing through coil and the permanent magnet by fixture 22, make movable piece 23 advance and retreat.Its result, makes adsorption element 18 and can with respect to framework 11, advance and retreat by dynamic pressure plate 13, carries out mold closing and die sinking.In addition, also the configuration of coil and permanent magnet can be exchanged, and also can replace permanent magnet and use other coils.
In addition, as mould driven for opening and closing portion, can use rotation motor and rotatablely moving of rotation motor is converted into the combination of straight-line ball-screw or hydraulic cylinder etc., to replace linear motor 21.
Mold clamping force generating unit 24 consists of rear fender 15 and adsorption element 18, and the absorption affinity producing by electromagnet 25 produces mold clamping force.The established part of the adsorption plane of rear fender 15, for example the surrounding of bar 19 is formed with the groove of the coil that holds electromagnet 25, and the inner side of groove is formed with the magnetic core of electromagnet 25.Adsorption section 26 be formed at adsorption element 18 adsorption plane established part for example encircles rod 19 and with the opposed part of electromagnet 25.If the coil to electromagnet 25 is supplied with electric current, between electromagnet 25 and adsorption section 26, can produce absorption affinity, and produce mold clamping force.
In addition, the electromagnet 25 of present embodiment is independent of rear fender 15 and forms, but also can be used as the part formation of rear fender 15.And the adsorption section 26 of present embodiment is independent of adsorption element 18 and forms, but also can be used as the part formation of adsorption element 18.And, also electromagnet 25 and the configuration of adsorption section 26 can be exchanged.That is, can form electromagnet 25 in adsorption element 18 sides, in rear fender 15 sides, form adsorption section 26.And, also can form electromagnet in rear fender side and these both sides of adsorption element side.
Then, with reference to figure 1 and Fig. 2, the action of the mold closing mechanism 10 of said structure is described.
Under the state finishing in the die sinking shown in Fig. 2, drive linear motor 21 to make to advance by dynamic pressure plate 13, as shown in Figure 1, dynamic model 33 contacts with cover half 32, and finishes mold closing.The moment finishing at mold closing is being between electromagnet 25 and adsorption section 26, to form the gap delta of regulation between rear fender 15 and adsorption element 18.In addition, the required power of mold closing is compared and is become very little with mold clamping force.
After mold closing finishes, by DM 25, between the opposed electromagnet 25 of gap delta across regulation and adsorption section 26, produce absorption affinity.By this absorption affinity can dynamic pressure plate 13 and fixation clip 12 between produce mold clamping force.
Between the cover half 32 of matched moulds state and dynamic model 33, form die cavity space.For example, at the aqueous moulding material of die cavity space-filling (molten resin), the moulding material of filling is through being solidified into products formed.
Afterwards, if by driving linear motor 21 to make to retreat by dynamic pressure plate 13, dynamic model 33 can retreat and carries out die sinking.After die sinking, from dynamic model 33, eject products formed.
Fig. 3 observes the figure of the fixation clip based on the 1st embodiment of the present invention from rear.
As shown in FIG. 1 to 3, fixation clip 12 has the fixation clip main part 12a and the fixation clip support 12b that supports fixation clip main part 12a that cover half 32 is installed.Fixation clip support 12b loads on framework 11 free to advance or retreatly, and forms gap between framework 11 and fixation clip main part 12a.
The side of fixation clip support 12b supporting fixation clip main part 12a.Fixation clip support 12b can be located at its left and right sides to clamp the mode of fixation clip main part 12a.In addition, fixation clip support 12b also can support the face (front end face) of the opposition side of mould installed surface (rear end face) in fixation clip main part 12a.
The above-below direction central portion of fixation clip support 12b supporting fixation clip main part 12a.In the above-below direction central portion of fixation clip main part 12a and fixation clip main part 12a, the center of the installation site of many connecting rods 16 is positioned on the position of framework 11 roughly the same distances.Fixation clip main part 12a during because of mold clamping force or thermal stress warpage, produces warpage in laterally zygomorphic mode, and can suppress fixation clip main part 12a and tilt with respect to framework 11.
Fixation clip main part 12a and framework 11 between there is gap, and only at above-below direction central portion, be connected with fixation clip support 12b.Therefore the heat that, is supplied to fixation clip main part 12a from cover half 32 mainly flows out from the above-below direction central portion of fixation clip main part 12a.Therefore, the Temperature Distribution of fixation clip main part 12a is upper and lower symmetry, and can suppress the warpage of fixation clip main part 12a.
Fixation clip main part 12a and framework 11 between there is gap, and both direction carries out thermal deformation up and down.Therefore,, in the variations in temperature of fixation clip main part 12a, with respect to the center of the fixation clip main part 12a of framework 11, be difficult for skew up and down.
In addition, the fixation clip support 12b of present embodiment is connected with the above-below direction central portion of fixation clip main part 12a, and link position can be various, and for example fixation clip support 12b can be connected with the bottom of fixation clip main part 12a.
Fig. 4 be from rear, observe based on the 1st embodiment of the present invention can dynamic pressure plate figure.
As shown in Figure 1, Figure 2, Figure 4 shows, can dynamic pressure plate 13 have be provided with dynamic model 33 can dynamic pressure plate main part 13a and supporting can dynamic pressure plate main part 13a can dynamic pressure plate support 13b.Can be fixed on guide pad 14 by dynamic pressure plate support 13b, at guide pad 14, framework 11 and can form gap between dynamic pressure plate main part 13a.
Can dynamic pressure plate support 13b supporting can dynamic pressure plate main part 13a side.Can dynamic pressure plate support 13b can with clamp can dynamic pressure plate main part 13a mode be located at its left and right sides.In addition, can dynamic pressure plate support 13b can support can dynamic pressure plate main part 13a in the face (rear end face) of opposition side of mould installed surface (front end face).
Can dynamic pressure plate support 13b supporting can dynamic pressure plate main part 13a above-below direction central portion.Above-below direction central portion that can dynamic pressure plate main part 13a is positioned on the position of framework 11 roughly the same distances with the center of installation site of bar 19 in can dynamic pressure plate main part 13a.Can dynamic pressure plate main part 13a during because of mold clamping force or thermal stress warpage, in laterally zygomorphic mode, produce warpage, and can suppress with respect to framework 11, to tilt by dynamic pressure plate main part 13a.
Can dynamic pressure plate main part 13a and framework 11 between there is gap, and only above-below direction central portion with can be connected by dynamic pressure plate support 13b.Therefore, from dynamic model 33 be supplied to can dynamic pressure plate main part 13a heat mainly from above-below direction central portion that can dynamic pressure plate main part 13a, flow out.Therefore, Temperature Distribution that can dynamic pressure plate main part 13a is upper and lower symmetry, and can suppress can dynamic pressure plate main part 13a warpage.
Can dynamic pressure plate main part 13a and framework 11 between there is gap, and both direction carries out thermal deformation up and down.Therefore in can the variations in temperature of dynamic pressure plate main part 13a, with respect to framework 11 can dynamic pressure plate main part 13a center be difficult for skew up and down.
In addition, can dynamic pressure plate support 13b being connected with above-below direction central portion that can dynamic pressure plate main part 13a of present embodiment, and link position can be various, for example can dynamic pressure plate support 13b can be connected with bottom that can dynamic pressure plate main part 13a.
Fig. 5 is the figure of the rear fender based on the 1st embodiment of the present invention from forward observation.
As shown in Figure 1, Figure 2, Figure 5, rear fender 15 has the rear fender main part 15a that is formed with electromagnet 25 and the rear fender support 15b that supports rear fender main part 15a.Rear fender support 15b is fixed on framework 11, between framework 11 and rear fender main part 15a, forms gap.
The side of rear fender support 15b supporting rear fender main part 15a.Rear fender support 15b can be located at its left and right sides to clamp the mode of rear fender main part 15a.In addition, rear fender support 15b can support the face (front end face) of the opposition side of adsorption plane (rear end face) in rear fender main part 15a.
The above-below direction central portion of rear fender support 15b supporting rear fender main part 15a.In the above-below direction central portion of rear fender main part 15a and rear fender main part 15a, the center of the installation site of many connecting rods 16 is positioned on the position of framework 11 roughly the same distances.Rear fender main part 15a during because of mold clamping force or thermal stress warpage, produces warpage in laterally zygomorphic mode, and can suppress rear fender main part 15a and tilt with respect to framework 11.
Rear fender main part 15a and framework 11 between there is gap, and only at above-below direction central portion, be connected with rear fender support 15b.Therefore, the joule's heat energy of electromagnet 25 mainly flows out from the above-below direction central portion of rear fender main part 15a.Therefore, the Temperature Distribution of rear fender main part 15a is upper and lower symmetry, and can suppress the warpage of rear fender main part 15a.
Rear fender main part 15a and framework 11 between there is gap, and both direction carries out thermal deformation up and down.Therefore in the variations in temperature of rear fender main part 15a, with respect to the center of the rear fender main part 15a of framework 11, be difficult for skew up and down.
In addition, the rear fender support 15b of present embodiment is connected with the above-below direction central portion of rear fender main part 15a, and link position can be various, and for example rear fender support 15b can be connected with the bottom of rear fender main part 15a.
Fig. 6 observes the figure of the adsorption element 18 based on the 1st embodiment of the present invention from rear.
As shown in Figure 1, Figure 2, Figure 6 shows, adsorption element 18 has the adsorption element main part 18a that is formed with adsorption section 26 and the adsorption element support 18b that supports adsorption element main part 18a.Adsorption element support 18b is fixed on glide base 20, between glide base 20, framework 11 and adsorption element main part 18a, forms gap.
The face (rear end face) of the opposition side of adsorption plane (front end face) in adsorption element support 18b supporting adsorption element main part 18a.Adsorption element support 18b can be to clamp the center of adsorption element main part 18a and symmetrical mode and establishing.In addition, adsorption element support 18b can support the side of adsorption element main part 18a.
The above-below direction central portion of adsorption element support 18b supporting adsorption element main part 18a.The center of the installation site of the above-below direction central portion of adsorption element main part 18a and adsorption element main part 18a king-rod 19 is positioned on the position of framework 11 roughly the same distances.Adsorption element main part 18a during because of mold clamping force or thermal stress warpage, produces warpage in laterally zygomorphic mode, and can with respect to framework 11, tilt by the restrain adsorption article body 18a of portion.
Adsorption element main part 18a and framework 11 between there is gap, and only at the above-below direction central portion of adsorption element main part 18a, be connected with adsorption element support 18b.The joule's heat energy of the vortex flow therefore, producing in adsorption element main part 18a mainly flows out from the above-below direction central portion of adsorption element main part 18a.Therefore, the Temperature Distribution of adsorption element main part 18a is upper and lower symmetry, and warpage that can the restrain adsorption article body 18a of portion.
Adsorption element main part 18a and framework 11 between there is gap, and both direction carries out thermal deformation up and down.Therefore in the variations in temperature of adsorption element main part 18a, with respect to the center of the adsorption element main part 18a of framework 11, be difficult for skew up and down.
In addition, the adsorption element support 18b of present embodiment is connected with the above-below direction central portion of adsorption element main part 18a, and link position can be various, and for example adsorption element support 18b can be connected with the bottom of adsorption element main part 18a.
Yet, as can extending to the opposition side of framework 11 (being top in present embodiment) along with the rising of temperature by dynamic pressure plate 13 of the 1st parts.Along with temperature that can dynamic pressure plate 13 rises, the center of the installation site of the bar 19 in can dynamic pressure plate 13 with the 1st distance L 1(between framework 11 with reference to figure 2, Fig. 4) become greatly.Bar 19 can dynamic pressure plate 13 and the connecting member of adsorption element 18 for linking, and be installed on can dynamic pressure plate main part 13a.
As shown in Figure 4, when can dynamic pressure plate support 13b supporting can dynamic pressure plate main part 13a above-below direction central portion time, the 1st distance L 1 mainly depend on can dynamic pressure plate support 13b temperature " ℃ " and thermal coefficient of expansion "/℃ ".
Adsorption element 18 as the 2nd parts extends to the opposition side of framework 11 (being top in present embodiment) along with the rising of temperature.Along with the temperature rising of adsorption element 18, the 2nd distance L 2(between the center of the installation site of adsorption element 18 king-rods 19 and framework 11 is with reference to figure 2, Fig. 6) become large.Bar 19 is installed on adsorption element main part 18a.
As shown in Figure 6, when the above-below direction central portion of adsorption element support 18b supporting adsorption element main part 18a, the 2nd distance L 2 mainly depend on adsorption element support 18b temperature " ℃ " and thermal coefficient of expansion "/℃ ".
Yet dynamic model 33 keeps set point of temperature by temperature adjusting machine for mold, from dynamic model 33 to supplying with heat by dynamic pressure plate 13.Therefore temperature that, sometimes can dynamic pressure plate 13 can become higher than the temperature of adsorption element 18.
Now, the thermal coefficient of expansion of at least a portion that can dynamic pressure plate 13 is lower than the thermal coefficient of expansion of at least a portion of adsorption element 18, so that the variation of the difference of the 1st distance L 1 compared with the past and the 2nd distance L 2 diminishes.
For example, thermal coefficient of expansion that can dynamic pressure plate support 13b is lower than the thermal coefficient of expansion of adsorption element support 18b.High temperature can dynamic pressure plate support 13b and the adsorption element support 18b same degree ground of low temperature extend upward, with in the past like that can dynamic pressure plate 13 and adsorption element 18 compare while being formed by the identical material of thermal coefficient of expansion, above-mentioned the 1st distance L 1 is little with the variation of the difference of above-mentioned the 2nd distance L 2.Therefore, can suppress to link via bar 19 can dynamic pressure plate 13 and adsorption element 18 with respect to framework 11, tilt, and can maintain matched moulds equilibrium of forces.
When the material of adsorption element support 18b is iron, as material that can dynamic pressure plate support 13b, such as enumerating glass or pottery, invar alloy etc.On the other hand, when material that can dynamic pressure plate support 13b is iron, as the material of adsorption element support 18b, for example, can enumerate copper or aluminium.
Can be formed by homogenous material by dynamic pressure plate support 13b, also can be formed by the different a plurality of materials of thermal coefficient of expansion.Can on prolonging direction (being above-below direction in Fig. 4), be divided into polylith by dynamic pressure plate support 13b, wherein the thermal coefficient of expansion of can be lower than the thermal coefficient of expansion of adsorption element support 18b.By regulating thermal coefficient of expansion or the size of each piece, can regulate high temperature can dynamic pressure plate support 13b elongation.
Equally, adsorption element support 18b also can be divided into polylith on prolonging direction (being above-below direction in Fig. 6).
Can the thermal coefficient of expansion of dynamic pressure plate main part 13a and the thermal coefficient of expansion of adsorption element main part 18a can be roughly the same, also can be different.When thermal coefficient of expansion is identical, as can dynamic pressure plate main part 13a or the material of adsorption element main part 18a, such as enumerating iron etc.
In addition, present embodiment can dynamic pressure plate support 13b supporting can dynamic pressure plate main part 13a above-below direction central portion, but also can support top or bottom.The 1st distance L 1 can be by can dynamic pressure plate main part 13a temperature or thermal coefficient of expansion, by can dynamic pressure plate support 13b supporting can dynamic pressure plate main part 13a position etc. adjust.And also can not having can dynamic pressure plate support 13b, can be fixed on guide pad 14 by dynamic pressure plate main part 13a.Now, thermal coefficient of expansion that can dynamic pressure plate main part 13a can be less than the thermal coefficient of expansion of at least a portion of adsorption element 18.
And, the above-below direction central portion of the adsorption element support 18b supporting adsorption element main part 18a of present embodiment, but also can support top or bottom.The 2nd distance L 2 can be by adsorption element main part 18a temperature or thermal coefficient of expansion, by the position of adsorption element support 18b supporting adsorption element main part 18a etc. adjusting.And, can there is no adsorption element support 18b yet, adsorption element main part 18a is fixed on glide base 20.Now, the thermal coefficient of expansion of adsorption element main part 18a can be greater than the thermal coefficient of expansion of at least a portion that can dynamic pressure plate 13.
[variation of the 1st embodiment]
The figure of the state when injection (mo(u)lding) machine die sinking that Fig. 7 is the variation of expression based on the 1st embodiment of the present invention finishes.In Fig. 7, state when solid line represents the moulding based on this variation, the state while representing in the past to carry out moulding is amplified in single-point line.In the past, fixation clip and rear fender for example, were formed by the roughly the same material of thermal coefficient of expansion (iron).
Injection (mo(u)lding) machine possesses the mold closing mechanism 110 of mold closing, matched moulds and the die sinking of carrying out die device 130 etc.Die device 130 for example consists of cover half 132 and dynamic model 133.
Mold closing mechanism 110 have framework 111, fixation clip 112, can dynamic pressure plate 113, rear fender 115, connecting rod 116, adsorption element 118, bar 119, as the linear motor 121 of mould driven for opening and closing portion and mold clamping force generating unit 124 etc.
Linear motor 121 makes to link via bar 119 can dynamic pressure plate 113 and adsorption element 118 with respect to framework 111, move.Linear motor 121 comprises fixture 122 and movable piece 123.Fixture 122 is for example formed at framework 111, and movable piece 123 is for example formed at glide base 120.
Mold clamping force generating unit 124 consists of rear fender 115 and adsorption element 118.For example in rear fender 115 sides, be formed with electromagnet 125, in adsorption element 118 sides, be formed with adsorption section 126.If the coil to electromagnet 125 is supplied with electric current, between electromagnet 125 and adsorption section 126, produce absorption affinity, and produce mold clamping force.
Yet, as the fixation clip 112 of the 1st parts, along with the rising of temperature, to the opposition side of framework 111 (being top in this variation), extend.Along with the temperature rising of fixation clip 112, the 1st distance L 101 in fixation clip 112 for example, between the center of the installation site of many (4) connecting rods 116 and framework 111 becomes large.Connecting rod 116 is the connecting member of link fixation clip 112 with rear fender 115, and is installed on fixation clip main part 112a.
As Fig. 3, when the above-below direction central portion of fixation clip support 112b supporting fixation clip main part 112a, the 1st distance L 101 depend on fixation clip support 112b temperature " ℃ " and thermal coefficient of expansion "/℃ " etc.
Rear fender 115 as the 2nd parts extends to the opposition side of framework 111 (being top in this variation) along with the rising of temperature.Along with the temperature rising of rear fender 115, the 2nd distance L 102 in rear fender 115 for example, between the center of the installation site of many (4) connecting rods 116 and framework 111 becomes large.Connecting rod 116 is installed on rear fender main part 115a.
As Fig. 5, when the above-below direction central portion of rear fender support 115b supporting rear fender main part 115a, the 2nd distance L 102 depend on rear fender support 115b temperature " ℃ " and thermal coefficient of expansion "/℃ " etc.
Yet cover half 132 keeps set point of temperature by temperature adjusting machine for mold, from cover half 132, to fixation clip 112, supply with heat.Therefore, the temperature of fixation clip 112 can become higher than the temperature of rear fender 115 sometimes.
Now, the thermal coefficient of expansion of at least a portion of fixation clip 112 is lower than the thermal coefficient of expansion of at least a portion of rear fender 115, so that the variation of the difference of the 1st distance L 101 compared with the past and the 2nd distance L 102 diminishes.
For example, the thermal coefficient of expansion of fixation clip support 112b is lower than the thermal coefficient of expansion of rear fender support 115b.The rear fender support 115b same degree ground of the fixation clip support 112b of high temperature and low temperature extends upward.Compare when like that fixation clip 112 and rear fender 115 were formed by the identical material of thermal coefficient of expansion in the past, the variation of the difference of above-mentioned the 1st distance L 101 and above-mentioned the 2nd distance L 102 is little.Therefore, fixation clip 112 and the rear fender 115 that can suppress to link via many connecting rods 116 tilt with respect to framework 111, and can maintain matched moulds equilibrium of forces.
When the material of rear fender support 115b is iron, as the material of fixation clip support 112b, such as enumerating glass or pottery, invar alloy etc.On the other hand, when the material of fixation clip support 112b is iron, as the material of rear fender support 115b, for example, can enumerate copper or aluminium.
Fixation clip support 112b can be formed by homogenous material, also can be formed by the different a plurality of materials of thermal coefficient of expansion.Fixation clip support 112b is divided into polylith on prolonging direction (being above-below direction in Fig. 7), and wherein the thermal coefficient of expansion of can be lower than the thermal coefficient of expansion of rear fender support 115b.By regulating thermal coefficient of expansion or the size of each piece, can regulate the elongation of the fixation clip support 112b of high temperature.
Equally, rear fender support 115b also can be divided into polylith on prolonging direction (being above-below direction in Fig. 7).
In addition, the above-below direction central portion of the fixation clip support 112b of this variation supporting fixation clip main part 112a, but also can support top or bottom.The 1st distance L 101 can be by fixation clip main part 112a temperature or thermal coefficient of expansion, by the position of fixation clip support 112b supporting fixation clip main part 112a etc. adjusting.And, can there is no fixation clip support 112b yet, fixation clip main part 112a can load in framework 111 free to advance or retreatly.
And, the above-below direction central portion of the rear fender support 115b supporting rear fender main part 115a of this variation, but also can support top or bottom.The 2nd distance L 102 can be by rear fender main part 115a temperature or thermal coefficient of expansion, by the position of rear fender support 115b supporting rear fender main part 115a etc. adjusting.And, can there is no rear fender support 115b yet, rear fender main part 115a is fixed on framework 111.
Yet as this variation, when the temperature of fixation clip 112 becomes temperature higher than rear fender 115, the thermal coefficient of expansion of fixation clip main part 112a can be lower than the thermal coefficient of expansion of rear fender main part 115a.The rear fender main part 115a same degree ground of the fixation clip main part 112a of high temperature and low temperature up and down both direction extends, and can maintain the depth of parallelism of many connecting rods 116, and easily keep matched moulds equilibrium of forces.
When the material of rear fender main part 115a is iron, as the material of fixation clip main part 112a, such as enumerating glass, pottery and invar alloy etc.
[the 2nd embodiment]
The mold closing mechanism of above-mentioned the 1st embodiment has linear motor and electromagnet.And the mold closing mechanism of present embodiment is different from the 1st embodiment having in matched moulds motor and toggle mechanism this point.
The figure of state when Fig. 8 finishes for the injection (mo(u)lding) machine mold closing of expression based on the 2nd embodiment of the present invention.The figure of state when Fig. 9 finishes for the injection (mo(u)lding) machine die sinking of expression based on the 2nd embodiment of the present invention.In Fig. 9, state when solid line represents the moulding based on the 2nd embodiment, the state while representing in the past to carry out moulding is amplified in single-point line.In the past, fixation clip and rear fender for example, were formed by the roughly the same material of thermal coefficient of expansion (iron).
Injection (mo(u)lding) machine possesses the mold closing mechanism 210 of mold closing, matched moulds and the die sinking of carrying out die device 230 etc.Die device 230 for example consists of cover half 232 and dynamic model 233.
Mold closing mechanism 210 such as have framework 211, fixation clip 212, can dynamic pressure plate 213, rear fender 215, connecting rod 216, toggle mechanism 220 and matched moulds motor 221 etc.
Fixation clip 212 can be fixed on framework 211.On the mould installed surface of fixation clip 212, cover half 232 is installed.
As the fixation clip 12 of the 1st embodiment, fixation clip 212 has the fixation clip main part 212a that cover half 232 is installed and the fixation clip support 212b that supports fixation clip main part 212a.
Can dynamic pressure plate 213 be fixed on along the guiding piece 217 that is layed in framework 211 and move on guide pad 214 freely.Thus, can dynamic pressure plate 213 free to advance or retreat with respect to framework 211.Can on the mould installed surface of dynamic pressure plate 213, dynamic model 233 be installed.
As the 1st embodiment can dynamic pressure plate 13, can dynamic pressure plate 213 have be provided with dynamic model 233 can dynamic pressure plate main part 213a and supporting can dynamic pressure plate main part 213a can dynamic pressure plate support 213b.
Rear fender 215 is equipped on rear that can dynamic pressure plate 213, and is linked to fixation clip 212 via many connecting rods 216.Rear fender 215 loads in framework 211 free to advance or retreatly, to allow connecting rod 216 to extend when the matched moulds.
As the rear fender 15 of the 1st embodiment, rear fender 215 has the rear fender main part 215a of supporting toggle mechanism 220 and the rear fender support 215b of supporting rear fender main part 215a.
Toggle mechanism 220 be equipped on can dynamic pressure plate 213 and rear fender 215 between.Toggle mechanism 220 for example by with respect to framework 211 crosshead 220a free to advance or retreat and by the thrust that is input into crosshead 220a be delivered to can dynamic pressure plate 213 a plurality of connecting rods form.
Matched moulds motor 221 comprises as the ball screw framework that is converted into straight-line conversion of motion portion by rotatablely moving, by making driving shaft 222 advance and retreat that crosshead 220a is advanced and retreat, so that toggle mechanism 220 work.
Then, with reference to figure 8 and Fig. 9, the action of the mold closing mechanism 210 of said structure is described.
Under the state finishing in the die sinking shown in Fig. 9, drive matched moulds motor 221 that crosshead 220a is advanced, make toggle mechanism 220 work, can advance by dynamic pressure plate 213, and dynamic model 233 contacts with cover half 232 and finishes mold closing.
After mold closing finishes, drive matched moulds motor 221, thereby be created in the mold clamping force that is multiplied by toggle multiplying power in the thrust of matched moulds motor 221.
Between the cover half 232 of matched moulds state and dynamic model 233, be formed with die cavity space.In die cavity space, fill aqueous moulding material (for example molten resin), the moulding material of filling is through being solidified into products formed.
Afterwards, drive matched moulds motor 221 that crosshead 220a is retreated, make toggle mechanism 220 work, can retreat by dynamic pressure plate 213, carry out die sinking.After die sinking finishes, from dynamic model 233, eject products formed.
Yet, as the fixation clip 212 of the 1st parts, along with the rising of temperature, to the opposition side of framework 211 (being top in present embodiment), extend.Along with the temperature rising of fixation clip 212, in fixation clip 212, the center of the installation site of many (for example 4) connecting rods 216 and the 1st distance L 201(between framework 211 are with reference to figure 9) become large.Connecting rod 216 is the connecting member of link fixation clip 212 with rear fender 215, and is installed on fixation clip main part 212a.
As Fig. 3, when the above-below direction central portion of fixation clip support 212b supporting fixation clip main part 212a, the 1st distance L 201 depend on fixation clip support 212b temperature " ℃ " and thermal coefficient of expansion "/℃ " etc.
Rear fender 215 as the 2nd parts extends to the opposition side of framework 211 (being top in present embodiment) along with the rising of temperature.Along with the temperature rising of rear fender 215, in rear fender 215, the center of the installation site of many (for example 4) connecting rods 216 and the 2nd distance L 202(between framework 211 are with reference to figure 9) become large.Connecting rod 216 is installed on rear fender main part 215a.
As Fig. 5, when the above-below direction central portion of rear fender support 215b supporting rear fender main part 215a, the 2nd distance L 202 depend on rear fender support 215b temperature " ℃ " and thermal coefficient of expansion "/℃ " etc.
Yet cover half 232 keeps set point of temperature by temperature adjusting machine for mold, from cover half 232, to fixation clip 212, supply with heat.Therefore, the temperature of fixation clip 212 becomes higher than the temperature of rear fender 215 sometimes.
Now, the thermal coefficient of expansion of at least a portion of fixation clip 212 is lower than the thermal coefficient of expansion of at least a portion of rear fender 215, so that the variation of the difference of the 1st distance L 201 compared with the past and the 2nd distance L 202 diminishes.
For example, the thermal coefficient of expansion of fixation clip support 212b is lower than the thermal coefficient of expansion of rear fender support 215b.The rear fender support 215b same degree ground of the fixation clip support 212b of high temperature and low temperature extends upward.Compare when like that fixation clip 212 and rear fender 215 were formed by the identical material of thermal coefficient of expansion in the past, the variation of the difference of above-mentioned the 1st distance L 201 and above-mentioned the 2nd distance L 202 diminishes.Therefore, fixation clip 212 and the rear fender 215 that can suppress to link via many connecting rods 216 tilt with respect to framework 211, and can maintain matched moulds equilibrium of forces.
When the material of rear fender support 215b is iron, as the material of fixation clip support 212b, such as enumerating glass and pottery, invar alloy etc.On the other hand, when the material of fixation clip support 212b is iron, as the material of rear fender support 215b, for example, can enumerate copper or aluminium.
Fixation clip support 212b can be formed by homogenous material, also can be formed by the different a plurality of materials of thermal coefficient of expansion.Fixation clip support 212b is divided into polylith on prolonging direction (being above-below direction in Fig. 8 and Fig. 9), and wherein the thermal coefficient of expansion of can be lower than the thermal coefficient of expansion of rear fender support 215b.By regulating the thermal coefficient of expansion of each piece or the elongation of the fixation clip support 212b that size can regulate high temperature.
Equally, rear fender support 215b also can be split into polylith on prolonging direction (being above-below direction in Fig. 8 and Fig. 9).
In addition, the above-below direction central portion of the fixation clip support 212b of present embodiment supporting fixation clip main part 212a, but also can support top or bottom.The 1st distance L 201 can be by fixation clip main part 212a temperature and thermal coefficient of expansion, by the position of fixation clip support 212b supporting fixation clip main part 212a etc. adjusting.And, can there is no fixation clip support 212b yet, fixation clip main part 212a is fixed on framework 211.
And, the above-below direction central portion of the rear fender support 215b supporting rear fender main part 215a of present embodiment, but also can support top or bottom.The 2nd distance L 202 can be by rear fender main part 215a temperature and thermal coefficient of expansion, by the position of rear plate support 215b supporting rear fender main part 215a etc. adjusting.And, can there is no rear fender support 215b yet, rear fender main part 215a loads in framework 211 free to advance or retreatly.
Yet as present embodiment, when the temperature of fixation clip 212 becomes higher than the temperature of rear fender 215, the thermal coefficient of expansion of fixation clip main part 212a can be lower than the thermal coefficient of expansion of rear fender main part 215a.The rear fender main part 215a same degree ground of the fixation clip main part 212a of high temperature and low temperature up and down both direction extends, and can maintain the depth of parallelism of many connecting rods 216, and be easy to keep matched moulds equilibrium of forces.
When the material of rear fender main part 215a is iron, as the material of fixation clip main part 212a, such as enumerating glass and pottery, invar alloy etc.On the other hand, when the material of fixation clip main part 212a is iron, as the material of rear fender main part 215a, for example, can enumerate copper or aluminium.
In addition, in present embodiment to the fixation clip 212 as the 1st parts, be illustrated as the rear fender 215 of the 2nd parts and as the combination of the connecting rod 216 of connecting member, but also applicable to as the 1st parts can dynamic pressure plate 213, as the rear fender 215 of the 2nd parts and as the combination of the toggle mechanism 220 of connecting member.Now equally also can improve matched moulds equilibrium of forces.
Above, the embodiment of injection (mo(u)lding) machine is illustrated, but the present invention is not limited to above-mentioned embodiment, within the scope of the aim of recording in the scope of technical scheme, can carries out various distortion and improvement.
For example, link above-mentioned the 1st embodiment can dynamic pressure plate and the bar of adsorption element be 1, but also can be many.
Claims (3)
1. an injection (mo(u)lding) machine, possesses:
The 1st parts, extend to a side contrary with framework along with the rising of temperature;
The 2nd parts, extend to a side contrary with described framework along with the rising of temperature; And
1 above connecting member, links described the 1st parts and described the 2nd parts,
Described in described the 1st parts between the center of the installation site of 1 above connecting member and described framework the 1st changes apart from the temperature along with described the 1st parts,
Described in described the 2nd parts between the center of the installation site of 1 above connecting member and described framework the 2nd changes apart from the temperature along with described the 2nd parts,
The thermal coefficient of expansion of at least a portion of described the 1st parts is lower than the thermal coefficient of expansion of at least a portion of described the 2nd parts, so that when the temperature of described the 1st parts becomes higher than the temperature of described the 2nd parts, while being formed by the identical material of thermal coefficient of expansion with described the 2nd parts with described the 1st parts, compare, described the 1st distance diminishes with the variation of the difference of described the 2nd distance.
2. injection (mo(u)lding) machine according to claim 1, wherein,
The thermal coefficient of expansion of the main part of the thermal coefficient of expansion of the main part of described the 1st parts and described the 2nd parts is roughly the same.
3. injection (mo(u)lding) machine according to claim 1, wherein,
The thermal coefficient of expansion of the main part of described the 1st parts is different from the thermal coefficient of expansion of the main part of described the 2nd parts.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2013-072868 | 2013-03-29 | ||
| JP2013072868A JP2014195958A (en) | 2013-03-29 | 2013-03-29 | Injection molding machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104070646A true CN104070646A (en) | 2014-10-01 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410028445.0A Pending CN104070646A (en) | 2013-03-29 | 2014-01-21 | Injection molding machine |
Country Status (4)
| Country | Link |
|---|---|
| JP (1) | JP2014195958A (en) |
| KR (1) | KR101548857B1 (en) |
| CN (1) | CN104070646A (en) |
| TW (1) | TW201436982A (en) |
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|---|---|---|---|---|
| KR102440159B1 (en) * | 2018-08-14 | 2022-09-02 | 엘에스엠트론 주식회사 | Clamping Unit |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009220563A (en) * | 2008-02-20 | 2009-10-01 | Sumitomo Chemical Co Ltd | Heater, resin molding apparatus, resin molding method, and resin molded body |
| CN101977746A (en) * | 2008-04-04 | 2011-02-16 | 住友重机械工业株式会社 | Mold clamping apparatus |
| WO2012014987A1 (en) * | 2010-07-30 | 2012-02-02 | コニカミノルタオプト株式会社 | Molding device and molding method |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4609144B2 (en) * | 2005-03-28 | 2011-01-12 | コニカミノルタオプト株式会社 | Horizontal molding machine |
| JP5056246B2 (en) * | 2007-08-01 | 2012-10-24 | コニカミノルタアドバンストレイヤー株式会社 | Injection molding equipment |
| JP2009101528A (en) * | 2007-10-19 | 2009-05-14 | Sodick Plastech Co Ltd | Horizontal mold clamping device of injection molding machine |
| JP2010089295A (en) | 2008-10-06 | 2010-04-22 | Sodick Plastech Co Ltd | Horizontal mold clamping device for injection molding machine |
-
2013
- 2013-03-29 JP JP2013072868A patent/JP2014195958A/en active Pending
-
2014
- 2014-01-15 TW TW103101417A patent/TW201436982A/en unknown
- 2014-01-21 CN CN201410028445.0A patent/CN104070646A/en active Pending
- 2014-01-28 KR KR1020140010643A patent/KR101548857B1/en not_active IP Right Cessation
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009220563A (en) * | 2008-02-20 | 2009-10-01 | Sumitomo Chemical Co Ltd | Heater, resin molding apparatus, resin molding method, and resin molded body |
| CN101977746A (en) * | 2008-04-04 | 2011-02-16 | 住友重机械工业株式会社 | Mold clamping apparatus |
| WO2012014987A1 (en) * | 2010-07-30 | 2012-02-02 | コニカミノルタオプト株式会社 | Molding device and molding method |
Also Published As
| Publication number | Publication date |
|---|---|
| TW201436982A (en) | 2014-10-01 |
| JP2014195958A (en) | 2014-10-16 |
| KR101548857B1 (en) | 2015-08-31 |
| KR20140118714A (en) | 2014-10-08 |
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