CN103158238A - Injection moulding machine - Google Patents
Injection moulding machine Download PDFInfo
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- CN103158238A CN103158238A CN2012103788953A CN201210378895A CN103158238A CN 103158238 A CN103158238 A CN 103158238A CN 2012103788953 A CN2012103788953 A CN 2012103788953A CN 201210378895 A CN201210378895 A CN 201210378895A CN 103158238 A CN103158238 A CN 103158238A
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- 239000003550 marker Substances 0.000 claims abstract description 96
- 238000005259 measurement Methods 0.000 claims abstract description 62
- 238000002347 injection Methods 0.000 claims description 53
- 239000007924 injection Substances 0.000 claims description 53
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- 238000012360 testing method Methods 0.000 claims description 16
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- 239000011347 resin Substances 0.000 description 6
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- 239000000696 magnetic material Substances 0.000 description 1
- 230000005415 magnetization Effects 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 description 1
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- Injection Moulding Of Plastics Or The Like (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
Abstract
The invention provides an injection moulding machine capable of carrying out balanced adjustment to a plurality of connecting rods. The injection moulding machine (10) is provided with a connecting rod (16) extending according to a mold clamping force applied on a fixed mold (11a) and a movable mold (11b). the injection moulding machine is characterized in that the connecting rod (16) is provided with a marker (M) used for image measurement of an elongation of the connecting rod (16).
Description
Technical field
Invention relates to injection (mo(u)lding) machine.
Background technology
Injection (mo(u)lding) machine with melting resin filling in the die cavity space of die device, come moulding moulded product (for example, with reference to patent documentation 1) by curing.Die device is made of cover half and dynamic model, forms the die cavity space during matched moulds between fixed half and moving half.The mold closing of die device, matched moulds and die sinking are undertaken by mold closing mechanism.
Mold closing mechanism possesses: fixation clip is equipped with cover half; But dynamic pressure plate is equipped with dynamic model; Base member configures with the fixation clip devices spaced apart; With a plurality of (for example 4) connecting rod, be connected and fixed pressing plate and base member.But advance and retreat to carry out mold closing, matched moulds and the die sinking of die device along connecting rod by dynamic pressure plate.
Connecting rod is applied the tensile force corresponding with mold clamping force, and therefore, connecting rod and mold clamping force elastic elongation with being ratio.By measuring the elongation of each connecting rod, can learn the bias degree of the mold clamping force that imposes on die device, and can carry out the balance adjustment of a plurality of connecting rods, to reduce the bias of mold clamping force.In this balance adjustment, regulate the position of the relative connecting rod of fixation clip or the position of the relative connecting rod of base member.
The elongation of each connecting rod (deformation) is measured by the contact-type strainmeter that is arranged on each connecting rod.Based on the testing result of a plurality of deformeters, carry out the balance adjustment of a plurality of connecting rods.After balance adjustment, deformeter is taken off from connecting rod.
Patent documentation 1: the international brochure that discloses No. 05/090052
In the past, when carrying out the balance adjustment of a plurality of connecting rods, on one side that deformeter is arranged on each connecting rod the operation of taking off from it on one side is loaded down with trivial details.Because the circumferential arrangement at connecting rod has various parts, therefore, guarantee that enough working spaces become difficult.
Summary of the invention
The present invention is the invention of carrying out in view of above-mentioned problem, its objective is the injection (mo(u)lding) machine that a plurality of connecting rods of a kind of easy balance adjustment are provided.
In order to solve above-mentioned problem, injection (mo(u)lding) machine according to an embodiment of the present invention possesses the connecting rod that extends according to the mold clamping force that acts on fixed half and moving half, it is characterized in that, on above-mentioned connecting rod, be provided with the concentrator marker for the elongation of the above-mentioned connecting rod of image measurement.
The invention effect:
According to the invention provides a kind of injection (mo(u)lding) machine that easily a plurality of connecting rods is carried out balance adjustment.
Description of drawings
The figure of the state when Fig. 1 means the injection (mo(u)lding) machine matched moulds of the 1st embodiment.
The figure of the state when Fig. 2 means the injection (mo(u)lding) machine die sinking of the 1st embodiment.
Fig. 3 means the figure of configuration of image pickup part of the injection (mo(u)lding) machine of the 1st embodiment.
Fig. 4 means the figure by the part of the image of the image pickup part shooting of the injection (mo(u)lding) machine of the 1st embodiment
Fig. 5 means the figure of configuration of image pickup part of injection (mo(u)lding) machine of the 1st variation of the 1st embodiment.
Fig. 6 means the figure of configuration of image pickup part of injection (mo(u)lding) machine of the 2nd variation of the 1st embodiment.
The figure of the state when Fig. 7 means the injection (mo(u)lding) machine matched moulds of the 2nd embodiment.
The figure of the state when Fig. 8 means the die sinking of injection (mo(u)lding) machine of the 2nd embodiment.
Fig. 9 means the figure of configuration of image pickup part of the injection (mo(u)lding) machine of the 2nd embodiment.
Symbol description
10 injection (mo(u)lding) machines
11 die devices
The 11a cover half
The 11b dynamic model
12 fixation clips
But 13 dynamic pressure plates
15 toggle supporting members (base member)
16 connecting rods
70 image pickup parts
71 video cameras
80 image processing parts
81 measurement section
82 test sections
90 adjusting portions
The M concentrator marker
The S rule
The specific embodiment
Below, describe being used for implementing mode of the present invention with reference to accompanying drawing, in each accompanying drawing to the additional identical or corresponding symbol of identical or corresponding structure and description thereof is omitted.And, but but the moving direction of the dynamic pressure plate in the time of will carrying out mold closing is made as the moving direction of the place ahead, the dynamic pressure plate in the time of will carrying out die sinking is made as the rear and describes.
The 1st embodiment
The mold closing mechanism of the injection (mo(u)lding) machine setup and use motor of present embodiment and the mode of toggle mechanism.
The figure of the state when Fig. 1 means the injection (mo(u)lding) machine matched moulds of the 1st embodiment.The figure of the state when Fig. 2 means the injection (mo(u)lding) machine die sinking of the 1st embodiment.
Injection (mo(u)lding) machine 10 possesses: the fixation clip 12 that cover half 11a is installed; But the dynamic pressure plate 13 of dynamic model 11b is installed; The toggle supporting member 15 as base member that sets with fixation clip 12 devices spaced apart; With a plurality of (for example 4) connecting rod 16 that links fixation clip 12 and toggle supporting member 15.Consist of die device 11 by cover half 11a and dynamic model 11b.
Fixation clip 12 is fixed on framework Fr.But fixation clip 12 sets dynamic pressure plate 13 relatively.But be formed with on dynamic pressure plate 13 be used to the not shown bullport that connecting rod 16 is run through.Also can form in addition notch part and replace bullport.But dynamic pressure plate 13 can be advanced and retreat along connecting rod 16 and be set (moving along left and right directions in figure).
Toggle supporting member 15 can be positioned on framework Fr movably.Set up between toggle supporting member 15 and fixation clip 12 along mould and open and close a plurality of connecting rods 16 that direction (left and right directions in figure) is extended.The leading section of connecting rod 16 is formed with not shown threaded portion on (right part in figure), by nut 14 is screwed togather and is tightened on the threaded portion, the leading section of connecting rod 16 is fixed on fixation clip 12.Equally, be formed with threaded portion 91 on the rearward end (left part in figure) of connecting rod 16, by being screwed on this threaded portion 91 and can being fixed on toggle supporting member 15 by the rearward end of the nut 92 of toggle supporting member 15 supportings with connecting rod 16 rotatably.
But be equipped with toggle mechanism 20 between toggle supporting member 15 and dynamic pressure plate 13.Toggle mechanism 20 has: for example be installed in the crosshead 24 on driving shaft 25; The 2nd angle lever 23 on crosshead 24 can be swingingly be arranged on, the 1st angle lever 21 on toggle supporting member 15 can be swingingly be arranged on; But and can swingingly be arranged on toggle arm 22 on dynamic pressure plate 13.Distinguish the connecting rod combination between the 1st angle lever 21 and the 2nd angle lever 23 and between the 1st angle lever 21 and toggle arm 22.This toggle mechanism 20 is so-called involute five fulcrum double-toggle mechanisms, has laterally zygomorphic structure.
Be equipped with the matched moulds motor 26 that makes toggle mechanism 20 actions on the rearward end of toggle supporting member 15.Matched moulds motor 26 possesses and is converted to the direction of motion conversion equipment (not shown) that reciprocating ball screw framework etc. consists of by rotatablely moving, and by making driving shaft 25 advance and retreat (moving along left and right directions in figure), and can make toggle mechanism 20 actions.
Make crosshead 24 advance and retreat by driving matched moulds motor 26, can make toggle mechanism 20 actions.At this moment, if crosshead 24 is advanced (left-hand moves in the figure), but come in to carry out mold closing before making dynamic pressure plate 13.And the thrust that produces matched moulds motor 26 multiply by the mold clamping force of torque multiplying power, and carries out matched moulds by this mold clamping force.
The driving of matched moulds motor 26 is controlled by control device 60.Control device 60 possesses CPU and memory etc., according to the result by the CPU computing, electric current supply is arrived matched moulds motor 26.In addition, but consist of mold closing mechanism by fixation clip 12 dynamic pressure plates 13, toggle supporting member 15, connecting rod 16, toggle mechanism 20 and matched moulds motor 26 etc.
Then, the action of injection (mo(u)lding) machine 10 described.The exercises of injection (mo(u)lding) machine 10 are carried out under the control of control device 60.
At first, control device 60 is controlled the mold closing operation.Under the state (die opening state) of Fig. 2, control device 60 arrives matched moulds motor 26, forward drive matched moulds motor 26 with electric current supply.Make driving shaft 25 to being rotated in the forward, make driving shaft 25 advance (moving to right in the drawings).Thus, crosshead 24 is advanced, but dynamic pressure plate 13 advance, dynamic model 11b and cover half 11a butt.
Then, control device 60 is controlled the matched moulds operation.In the matched moulds operation, control device 60 makes matched moulds motor 26 further to forward drive, produces mold clamping force in die device 11.During this period, the resin of melting is filled in the not shown die cavity space that forms between cover half 11a and dynamic model 11b.
If the resin cooling curing in the die cavity space, control device 60 is controlled the die sinking operation.In the die sinking operation, control device 60 makes the reverse driving of matched moulds motor 26, makes driving shaft 25 counter-rotatings.As a result, crosshead 24 retreats, and carries out die sinking but dynamic pressure plate 13 retreats.
After the die sinking operation finishes, but the not shown liftout attachment action of installing on dynamic pressure plate 13.Thus, knock pin is ejected, and the products formed in dynamic model 11b is ejected from dynamic model 11b.
Can apply tensile force to each connecting rod 16 accordingly with mold clamping force, connecting rod 16 and mold clamping force be elastic elongation pro rata.By the elongation (strain) of measuring each connecting rod 16, can learn the bias degree of the mold clamping force that imposes on die device 11, and can carry out the balance adjustment of a plurality of connecting rods 16 with the bias of reduction mold clamping force.
Be provided with the concentrator marker M for the elongation of each connecting rod 16 of image measurement on each connecting rod 16.Each concentrator marker M is configured between the fixation clip 12 and toggle supporting member 15 that links by connecting rod 16.But but the position that each concentrator marker M can also be configured in dynamic pressure plate 13 when comparing die sinking by the rear or the position of the dynamic pressure plate 13 when comparing matched moulds on the front, not hinder the movement of movable pressing plate 13.
As concentrator marker M, seal label, light concentrator marker or light reflecting board etc. such as using, and be arranged on the outer peripheral face of connecting rod 16.Fig. 1 and concentrator marker M shown in Figure 2 are printed on the black circle that the white sealing is signed.In addition, concentrator marker M can be for drawing or stamp parts on the outer peripheral face of connecting rod 16.
Concentrator marker M can arrange a plurality of (for example two) on each connecting rod 16.Two concentrator marker M that are arranged on each connecting rod 16 have the interval on the direction parallel with the matched moulds direction (left and right directions in figure).Below, the direction parallel with the matched moulds direction is called " the 1st direction ".
The elongation δ L of the concentrator marker spacing L of the 1st direction is calculated by following formula (1).Here, the concentrator marker spacing is the distance between the center (center of the black circle of concentrator marker M in present embodiment) of two concentrator marker M.
δL＝L－L0……（1）
In formula (1), L0 is illustrated in the distance between concentrator marker on the 1st direction when not producing tensile force (and compression stress) on each connecting rod 16.L0 is measured such as termly in die sinking the time and be stored in the memory etc. of image processing part 80 described later, and reads as required.
The elongation δ L of concentrator marker spacing L on the 1st direction and the elongation of connecting rod 16 are ratio.The experiment of proportionality constant by in advance etc. obtained, and is stored in the memory etc. of image processing part 80, reads as required, and is used for calculating the elongation of connecting rod 16.The elongation of connecting rod 16 is proportional with the tensile force that imposes on connecting rod 16.
Impose on the tensile force P(N of each connecting rod 16) calculated by following formula (2).
P＝Ｅ×A×δL／L0……（2）
In formula (2), E is the Young's modulus (N/m of connecting rod 16
2), the sectional area (m of A connecting rod for indication 16
2).It is also passable that a plurality of connecting rods 16 have roughly the same Young's modulus E, roughly the same sectional area A.
When matched moulds, the standard deviation of tensile force P that imposes on a plurality of connecting rods 16 is less, and the bias of mold clamping force that imposes on die device 11 is less.When L0 is identical on a plurality of connecting rods 16, can be clear and definite by formula (2), replace the standard deviation of tensile force P, the degree of bias of mold clamping force that imposes on die device 11 based on the standard deviation judgement of elongation δ L is also passable.
Like this, in the present embodiment, when matched moulds, use the concentrator marker M that is arranged on each connecting rod 16 to come the elongation of each connecting rod 16 of image measurement.In addition, for the concrete condition aftermentioned of image measurement.In this image measurement, do not need the operation that parts are installed and taken off from each connecting rod 16 to each connecting rod 16.And, based on the result of image measurement, can know the bias degree of the mold clamping force that imposes on die device 11, and the balance adjustment that can carry out a plurality of connecting rods 16 imposes on the bias of the mold clamping force of die device 11 with reduction.This balance adjustment as mentioned above, the operation that does not need parts are arranged on each connecting rod 16 or parts are taken off from each connecting rod 16, therefore easily.
In addition, the concentrator marker M of present embodiment is separately positioned on whole (4) connecting rods 16, but during easy balance adjustment, is separately positioned on the connecting rod 16 more than 2 get final product, can setting respectively on whole connecting rod 16.For example as shown in Figure 3, infer in 4 connecting rod 16A～16D 2 elongations of upside identical, two elongations of downside are identical, and when regulating simply the balance of up and down, concentrator marker M are set on one in two of in two of upside one and downside to get final product.Equally, as shown in Figure 3, two elongations of inferring in 4 connecting rod 16A～16D the left side are identical, the 2 elongations right side are identical and when regulating simply the balance of left and right, concentrator marker M are set on 1 in 2 of in 2 of the left side 1 and right side to get final product.And, regulating simply in up and down balance and left right balanced situation, concentrator marker M can be arranged on in 4 connecting rod 16A～16D 3.And, also can realize and use the balance adjustment of the concentrator marker M of present embodiment and in the past mold clamping force sensor (deformeter).
Fig. 3 means the figure of the image pickup part of the injection (mo(u)lding) machine that configures the 1st embodiment.In order easily to watch figure, omit the diagram of toggle mechanism 20 grades in Fig. 3.
Injection (mo(u)lding) machine 10 can possess as shown in Figure 3: the image pickup part 70 that the image that contains concentrator marker M is made a video recording; With the image processing part 80 that the image by image pickup part 70 shootings is carried out the image processing.Image pickup part 70 and image processing part 80 remove from injection (mo(u)lding) machine 10 after balance adjustment finishes, and are arranged in other injection (mo(u)lding) machine 10 also passable.Image pickup part 70 and image processing part 80 be owing to being arranged on the place of leaving from connecting rod 16, therefore arranges and to remove operation easy.In addition, the injection (mo(u)lding) machine 10 of present embodiment has special-purpose image processing part 80, but that control device 60 plays the effect of image processing part 80 is also passable.
Yet the distance between video camera 71 and each connecting rod 16 is far away, and in the image by video camera 71 shootings, each connecting rod 16 shortens, and the concentrator marker spacing shortens.
Therefore, image pickup part 70 can also be made a video recording to the image that comprises rule S set in injection (mo(u)lding) machine 10 except concentrator marker M.Based on the distance that rule S in image represents, can eliminate the impact of the distance between video camera 71 and each connecting rod 16.The position that rule S can not stretch when being arranged on matched moulds for example is fixed on framework Fr.The distance that rule S represents (such as the length SL of the rule S of linearity), and is stored in the memory etc. of image processing part 80 by measurements such as rulers by regularly, reads as required.
Fig. 4 means the figure by the part of the image of the image pickup part shooting of the injection (mo(u)lding) machine of the 1st embodiment.Image, Fig. 4 (b) image when meaning die sinking of Fig. 4 (a) when meaning matched moulds.In order easily to observe figure, the diagram of toggle mechanism 20 images such as grade is omitted in Fig. 4.
Image P by image pickup part 70 shooting comprises the image 16P(of connecting rod 16 hereinafter referred to as " connecting rod image 16P "), the image SP(of rule S is hereinafter referred to as " rule image SP ").Comprise the image M P(of two concentrator marker M in each connecting rod image 16P hereinafter referred to as " concentrator marker image M P ").
80 couples of image P by image pickup part 70 shootings of image processing part carry out image to be processed.Image processing part 80 is such as comprising CPU and memory etc.Image processing part 80 realizes by the various programs of the middle storages such as CPU execute store the described later various functions that image processing part 80 has.The data that produce when CPU carries out are stored in memory etc.
Elongation δ L is calculated by following formula (4).
δL＝L0×δLP／LP0……（3）
In formula (3), δ LP=LP-LP0, when LP0 represents not produce tensile force (and compression stress) on each connecting rod 16, concentrator marker image M P in the heart the distance of the 1st direction.Connecting rod image 16P when LP0 can be for example with regular die sinking carries out image to be processed to calculate.The LP0 that calculates is stored in the memory of image processing part 80 etc., reads as required, and is used for the measurement of elongation δ L.
In addition, when in a plurality of connecting rods 16, L0 was identical, the elongation δ L of each connecting rod 16 can be calculated by following formula (4).
δL＝A×（SPL／LP0）×δLP ……（4）
In formula (4), A is proportionality constant, and SPL is the distance that rule image SP represents.SPL/LP0 is the correction term for the impact of removing the distance between video camera 71 and each connecting rod 16.
Like this, in the present embodiment, by the concentrator marker M that is arranged on each connecting rod 16 is made a video recording, and the image P after shooting is carried out image process, thus automatically elongation and the deflection of each connecting rod 16 of image measurement.
In addition, on each connecting rod 16 of present embodiment, two concentrator marker M are set respectively, but the number that arranges of concentrator marker M is varied.For example, in the situation that a concentrator marker M respectively is set on each connecting rod 16, the variation of the image coordinate of the concentrator marker image M P during based on die sinking when the image coordinate of concentrator marker image M P and matched moulds is elongation and the deflection of each connecting rod 16 of image measurement automatically.
Injection (mo(u)lding) machine 10 is in order automatically to carry out balance adjustment, and can possess adjusting portion 90, this adjusting portion 90 can be according to the fixation clip 12 of 16 pairs of connecting rods 16 of each connecting rod and the part 16a(between the toggle supporting member 15 predetermined portions 16a hereinafter referred to as connecting rod 16) length W1(with reference to Fig. 2) regulate.
Adjusting portion 90 screws togather by the threaded portion 91 on the rearward end that is formed on the connecting rod 16 that runs through toggle supporting member 15, with threaded portion 91 and rotatably by the nut 92 of toggle supporting member 15 supporting and the governor motor 93 etc. of nut 92 rotations is consisted of.Consist of direction of motion converter section by nut 92 and threaded portion 91, in this direction of motion converter section, rotatablely moving of nut 92 is converted into the rectilinear motion of connecting rod 16.
Can a plurality of (for example 4) governor motor 93 be set accordingly with a plurality of (for example 4) nut 92.In addition, governor motor 93 can only arrange one, and is provided with according to the gear mechanism that is connected, cuts off between 92 pairs of governor motors 93 of each nut and a plurality of nuts 92.
Adjusting portion 90 is regulated the length W1 of the predetermined portions 16a of at least one connecting rod 16 based on the measurement result of measurement section 81.This adjusting is by driving governor motor 93 and making nut 92 relative threaded portion 91 rotate scheduled volumes and carry out the position of adjusting connecting rod 16 relative toggle supporting members 15.This adjusting can be carried out under die opening state.
The action of adjusting portion 90 is controlled by control device 60.Whether impose on the standard deviation (for example between maximum and minimum of a value poor) of the tensile force P of a plurality of connecting rods 16 when for example, at first control device 60 judges matched moulds based on the measurement result of measurement section 81 lower than setting value.When standard deviation surpassed setting value, for example, adjusting portion 90 was elongated the length W1 of predetermined portions 16a of the connecting rod 16 of tensile force P maximum.Perhaps, adjusting portion 90 makes the length W1 of predetermined portions 16a of the connecting rod 16 of tensile force P minimum shorten also passable.Thereafter, the elongation of a plurality of connecting rod 16 during 81 pairs of matched moulds of measurement section is measured again, and based on the result of measuring again, whether control device 60 rejudges above-mentioned standard deviation lower than setting value.The result that rejudges, when above-mentioned standard deviation surpassed setting value, adjusting portion 90 was regulated the length W1 of the predetermined portions 16a of a connecting rod 16 at least.On the other hand, above-mentioned standard deviation is when setting value is following, and adjusting portion 90 is not regulated.
Like this, adjusting portion 90 is regulated the length W1 of the predetermined portions 16a of at least one connecting rod 16 based on the measurement result of measurement section 81, imposes on the bias of the mold clamping force of die device 11 when reducing matched moulds.This adjusting can be carried out when power apparatus (for example keyboard) receives user's indication in entering of being connected with control device 60, and also can regularly automatically carry out.
And adjusting portion 90 can be regulated the length W1 of the predetermined portions 16a of at least one connecting rod 16 based on the testing result of test section 82.This adjusting is undertaken by following action, drives governor motor 93, makes nut 92 relative threaded portion 91 rotation scheduled volumes, the position of adjusting connecting rod 16 relative toggle supporting members 15.This be adjusted in carry out under die opening state also passable.
The 1st variation of the 1st embodiment
Be provided with concentrator marker M with respect to video camera 71 sides at each connecting rod 16 in above-mentioned the 1st embodiment, arrange on concentrator marker M this point different at the connecting rod 16 of a part in this variation from video camera 71 side opposition sides.Below, describe centered by difference.
Fig. 5 means the figure based on the configuration of the image pickup part of the injection (mo(u)lding) machine of the 1st variation of the 1st embodiment, for being equivalent to the figure of Fig. 3.
In figure, video camera 71 1 sides of 2 connecting rod 16A～16B in left side are provided with concentrator marker M.On the other hand, in figure, the side opposite with video camera 71 1 sides of 2 of right side connecting rod 16C～16D is provided with concentrator marker M.
Because the upper set concentrator marker M of 2 connecting rod 16A～16B to left side in figure makes a video recording, therefore, will be that the light that light concentrator marker (for example L ED) penetrates can be fixed on the connecting rod 16A～16B in left side figure towards the reflection part 73 of video camera 71 reflections from concentrator marker M.Use corner prism etc. as reflection part 73.Reflection part 73 can arrange a plurality of with the upper set a plurality of concentrator marker M of connecting rod 16A～16B in left side in figure accordingly.
In image by video camera 71 shooting, comprise the image of the upper set concentrator marker M of each connecting rod 16A～16D.Therefore, identical with the 1st embodiment, automatically elongation and the deflection of each connecting rod of image measurement 16A～16D.
The 2nd variation of the 1st embodiment
In above-mentioned the 1st embodiment, 71, video camera arranges one, and in this variation, difference on a plurality of video camera 71 this point is being set.Below, describe centered by difference.
Fig. 6 means the figure of configuration of image pickup part of injection (mo(u)lding) machine of the 2nd variation of the 1st embodiment, is the figure that is equivalent to Fig. 3.
Comprised the image of concentrator marker M set on each connecting rod 16A～16D in a plurality of images of roughly synchronization shooting by a plurality of video camera 71L, 71R.Therefore, same with the 1st embodiment, automatically elongation and the amount of deflection of each connecting rod of image measurement 16A～16D.
The 2nd embodiment
The injection (mo(u)lding) machine of above-mentioned the 1st embodiment possesses the mold closing mechanism of the mode of using motor and toggle mechanism.To this, the injection (mo(u)lding) machine of present embodiment is arranging difference on the mold closing mechanism this point, and described mold closing mechanism uses line motor for the mould on-off action, utilizes the absorption affinity of electromagnet for mould assembling action.
The figure of the state when Fig. 7 means the injection (mo(u)lding) machine matched moulds of the 2nd embodiment.The figure of the state when Fig. 8 means the injection (mo(u)lding) machine die sinking of the 2nd embodiment.
Injection (mo(u)lding) machine 110 possesses: the fixation clip 112 that cover half 111a is installed; But the dynamic pressure plate 113 of dynamic model 111b is installed; With fixation clip 112 devices spaced apart the rear fender 115 as base member that sets; With a plurality of (for example 4) connecting rod 116 with fixation clip 112 and rear fender 115 links.
But dynamic pressure plate 113 is fixed on movable base Bb, and movable base Bb can walk on guide member Gd.Thus, but dynamic pressure plate 113 can open and close direction along mould relative to fixation clip 112 move.But be formed with on dynamic pressure plate 113 for the not shown bullport that connects connecting rod 116.In addition, also can form notch and replace bullport.But dynamic pressure plate 113 can be advanced and retreat along connecting rod 116 and be set (moving along left and right directions in figure).
Cover half 111a is installed on fixation clip 112, but on dynamic pressure plate 113, dynamic model 111b is installed, but follow the advance and retreat of dynamic pressure plate 113, cover half 111a and dynamic model 111b contact separation, and carry out mold closing, matched moulds and die sinking.In addition, follow and carry out matched moulds, form not shown die cavity space between cover half 111a and dynamic model 111b, be filled with melting in the die cavity space resin.Consist of die device 111 by cover half 111a and dynamic model 111b.
But line motor 128 is for being used for making the mould driven for opening and closing section of dynamic pressure plate 113 advance and retreat, but for example be provided in and adsorption plate 122 and framework Fr that dynamic pressure plate 113 links between.In addition, but line motor 128 also can be provided between dynamic pressure plate 113 and framework Fr.
When the electric current supply by will be predetermined drives line motor 128 to the coil 135, mover 131 advance and retreat.Follow in this, but make adsorption plate 122 and dynamic pressure plate 113 advance and retreat, can carry out mold closing and die sinking.The testing result of line motor 128 position-based sensors 153 is carried out FEEDBACK CONTROL, so that the position of mover 131 becomes setting value.
In addition, in the present embodiment, become permanent magnet be provided on stator 129, coil 135 is provided on mover 131, but with coil be provided in permanent magnet is provided on mover on stator also passable.At this moment, follow to drive line motor 128, coil does not move, so can easily carry out for the distribution to the coil supply capability.
In addition, as mould driven for opening and closing section, can be converted to rotation motor and with rotatablely moving of rotation motor fluid-pressure cylinders such as straight-line ball screw framework or hydraulic cylinder or cylinder etc. and replace line motor 128.
Electromagnet unit 37 produces absorption affinity between rear fender 115 and adsorption plate 122.But this absorption affinity is delivered to dynamic pressure plate 113 via bar 139, but and produces mold clamping force between dynamic pressure plate 113 and fixation clip 112.
In addition, but consist of mold closing mechanism by fixation clip 112 dynamic pressure plates 113, rear fender 115, connecting rod 116, adsorption plate 122, line motor 128, electromagnet unit 137 and bar 139 etc.
In addition, in the present embodiment, be formed with electromagnet 149 outside rear fender 115, be formed with adsorption section 151 outside adsorption plate 122, but also can with the part of electromagnet as rear fender 115, the part of adsorption section as adsorption plate 122 be formed.And electromagnet is opposite with the configuration of adsorption section also passable.For example, electromagnet 149 can be arranged on adsorption plate 122 sides, adsorption section 151 is arranged on rear fender 115 sides.
In electromagnet unit 137, when supplying with electric current to coil 148, electromagnet 149 is driven, with adsorption section 151 absorption, and mold clamping force is produced.
The line motor 128 of injection (mo(u)lding) machine 110 and the driving of electromagnet 149 are controlled by control device 160.Control device 160 possesses CPU and memory etc., according to the result by the CPU computing, supplies with electric current to the coil 135 of line motor 128 or the coil 148 of electromagnet 149.
Then, the action of injection (mo(u)lding) machine 110 described.The exercises of injection (mo(u)lding) machine 110 are carried out under the control of control device 160.
At first, control device 160 is controlled the mold closing operation.In the state (die opening state) of Fig. 8, control device 160 is supplied with electric current to coil 135, drives line motor 128.But dynamic pressure plate 113 advances, dynamic model 111b and cover half 111a butt.At this moment, between rear fender 115 and adsorption plate 122, namely form the gap between electromagnet 149 and adsorption section 151.In addition, the required power of mold closing is compared mold clamping force and is set fully littlely.
Then, control device 160 is controlled the matched moulds operation.In the matched moulds operation, the coil 148 of 160 pairs of electromagnet 149 of control device is supplied with electric current, and adsorption section 151 is adsorbed on electromagnet 149.But this absorption affinity is delivered to dynamic pressure plate 113 via bar 139, but produces mold clamping force between dynamic pressure plate 113 and fixation clip 112.During this, melting resin be filled in the not shown die cavity space that forms between cover half 111a and dynamic model 111b.When the resin in the die cavity space is cooled when solidifying, control device 160 stops supplying with electric currents to the coil 148 of electromagnet 149.
Then, control device 160 is controlled the die sinking operation.Control device 160 drives line motor 128.But dynamic pressure plate 113 retreats, and as shown in Figure 8, dynamic model 111b retreats and carries out die sinking.
When the die sinking operation finishes, but the not shown liftout attachment that is installed on dynamic pressure plate 113 moves.Thus, knock pin ejects, and the products formed in dynamic model 111b is ejected by dynamic model 111b.
Yet, accordingly each connecting rod 116 is applied tensile force with mold clamping force, and each connecting rod 116 and mold clamping force are ratio ground elastic elongation.By the elongation (strain) of measuring each connecting rod 116, can learn the bias degree of the mold clamping force that imposes on die device 111, and can carry out the balance adjustment of a plurality of connecting rods 116 with the bias of reduction mold clamping force.
Be provided with the concentrator marker M for the elongation of each connecting rod 116 of image measurement on each connecting rod 116.Each concentrator marker M is configured between the fixation clip 112 and rear fender 115 that links by connecting rod 116.But but the position of the dynamic pressure plate 113 when each concentrator marker M also can be configured in than die sinking also by the position of rear or the dynamic pressure plate 113 during than matched moulds also on the front not hinder the movement of movable pressing plate 113.
Concentrator marker M can arrange a plurality of (for example 2) on each connecting rod 116.Two concentrator marker M set on each connecting rod 16 have the interval in the direction parallel with the matched moulds direction (left and right directions in figure).Below, the direction parallel with the matched moulds direction is called " the 1st direction ".By the concentrator marker spacing L of image measurement the 1st direction, can measure the elongation of each connecting rod 116.
Like this, same with the 1st embodiment in the present embodiment, when matched moulds, utilize the elongation of each connecting rod 116 of concentrator marker M image measurement set on each connecting rod 116.In this image measurement, do not need to be installed on connecting rod 116 parts or the operation of taking off parts from connecting rod 116.And, based on the result of image measurement, the bias degree of the mold clamping force that imposes on die device 111 can be learnt, and the balance adjustment of a plurality of connecting rods 116 can be carried out, impose on the bias of the mold clamping force of die device 111 with reduction.This balance adjustment as mentioned above, does not need to be installed on connecting rod 116 parts or the operation of taking off parts from connecting rod 116, therefore easily.
In addition, also identical with the 1st embodiment in present embodiment, can on the connecting rod 116 more than 2, concentrator marker M be set respectively, also concentrator marker M can be separately positioned on whole connecting rod 116.And, also can carry out and use the balance adjustment of the concentrator marker M of present embodiment and mold clamping force sensor (deformeter) in the past.
Fig. 9 means the figure of configuration of image pickup part of the injection (mo(u)lding) machine of the 2nd embodiment.In Fig. 9, omitted the diagram of bar 139 grades for easy observation figure.
As shown in Figure 9, injection (mo(u)lding) machine 110 can possess the image pickup part 70 that the image that comprises concentrator marker M is made a video recording and the image by image pickup part 70 shootings is carried out the image processing part 80 that image is processed.Image pickup part 70 and image processing part 80 also can remove from injection (mo(u)lding) machine 110 after balance adjustment finishes, and are arranged on other injection (mo(u)lding) machine 110.Therefore image pickup part 70 and image processing part 80 are arranged on the position away from connecting rod 116, arrange and to remove operation easy.In addition, the injection (mo(u)lding) machine 110 of present embodiment has special-purpose image processing part 80, but control device 60 also can play the effect of image processing part 80.
Yet the distance between video camera 71 and each connecting rod 116 is far away, and less by each connecting rod 116 in the image of video camera 71 shootings, in the image of each connecting rod 116, the concentrator marker spacing shortens.
Here, image pickup part 70 can to beyond concentrator marker M, the image of set rule S is made a video recording in injection (mo(u)lding) machine 110.In image, based on the distance shown in rule S, can remove the impact of the distance between video camera 71 and each connecting rod 116.On the position that can not stretch when rule S is arranged on matched moulds, for example be fixed on framework Fr.Distance shown in rule S (such as the length SL of the rule S of linearity), and is stored in the memory etc. of image processing part 80 by measurements such as rulers by regularly, reads as required.
In addition, video camera 71 also can be made a video recording to being arranged on as shown in Figure 5 with the concentrator marker of the opposite side of camera side of connecting rod.And video camera 71 also can arrange a plurality of as shown in Figure 6.
In addition, measurement section 81 is when image measurement, and the impact of removing the distance between video camera 71 and each connecting rod 116 based on the distance shown in rule image SP (for example length SPL of the rule image SP of linearity) also can.
Like this, in the present embodiment, by concentrator marker M set on each connecting rod 116 being made a video recording and the image of having made a video recording being carried out image process, automatically elongation and the deflection of each connecting rod 116 of image measurement.
In addition, on each connecting rod 116 of present embodiment, two concentrator marker M are set respectively, but the number that arranges of concentrator marker M is diversified.For example, when on each connecting rod 116, a concentrator marker M being set respectively, in the time of can be according to die sinking when the image coordinate of concentrator marker image M P and matched moulds the variation between the image coordinate of concentrator marker image M P come automatic map to look like to measure elongation and the deflection of each connecting rod 116.
Injection (mo(u)lding) machine 110 is owing to automatically carrying out balance adjustment, can be according to the fixation clip 112 of 116 pairs of connecting rods 116 of each connecting rod and the part 116a(between rear fender 115 hereinafter referred to as " the predetermined portions 116a of connecting rod 116 " so can arrange) length W2(according to Fig. 8) adjusting portion 190 of regulating.
Formed threaded portion 191 on the leading section of adjusting portion 190 by the connecting rod 116 that runs through fixation clip 112, screw togather with threaded portion 191 and the nut 192 of pressing plate 112 supportings that rotatably are fixed and the governor motor 193 etc. of nut 192 rotations is consisted of.Consist of direction of motion converter section by nut 192 and threaded portion 191, in this direction of motion converter section, rotatablely moving of nut 192 is converted into the rectilinear motion of connecting rod 116.
The relative fixation clip 112 of governor motor 193 is fixing.Governor motor 193 is preferably servo motor, possesses the turn-sensitive device 194 as the encoder that detects rotating speed.Governor motor 193 carries out FEEDBACK CONTROL based on the testing result of turn-sensitive device 194, so that the rotation amount of nut 192 becomes predetermined value.
Corresponding with a plurality of (for example 4) nut 192 a plurality of (for example 4) governor motor 193 can be set.In addition, governor motor 193 only arranges one, and arranges according to the gear mechanism that is connected between 192 pairs of governor motors 193 of each nut and a plurality of nuts 192 and cut off also passable.
Adjusting portion 190 is regulated based on the measurement result of the measurement section 81 length W2 to the predetermined portions 116a of at least one connecting rod 116.This adjusting is by driving governor motor 193, making nut 192 relative threaded portion 191 rotation scheduled volumes and the position of connecting rod 116 relative fixation clips 112 is regulated to carry out.This be adjusted in carry out under the state of die sinking also passable.
The action of adjusting portion 190 is controlled by control device 160.For example, at first based on the measurement result of measurement section 81, whether the standard deviation (for example maximum and minimum of a value is poor) of the tensile force P of a plurality of connecting rods 116 when judgement imposes on matched moulds is below setting value to control device 160.When standard deviation surpassed setting value, for example, adjusting portion 190 made tensile force P elongated for the length W2 of the predetermined portions 116a of maximum connecting rod 116.Perhaps, adjusting portion 190 also can make tensile force P shorten for the length W2 of the predetermined portions 116a of minimum connecting rod 116.Afterwards, the elongation of a plurality of connecting rods 116 when measurement section 81 also can be measured matched moulds again rejudges above-mentioned standard deviation whether below setting value based on the output control device 160 of again measuring.The result that rejudges, when above-mentioned standard deviation surpassed setting value, adjusting portion 190 was regulated the length W2 of the predetermined portions 116a of at least one connecting rod 116.On the other hand, when above-mentioned standard deviation was following for setting value, adjusting portion 190 was regulated also passable.
Like this, adjusting portion 190 is regulated the length W2 of the predetermined portions 116a of at least one connecting rod 116 based on the measurement result of measurement section 81, imposes on the bias of the mold clamping force of die device 111 when reducing matched moulds.This is adjusted in and carries out also passablely when the input unit (for example keyboard) that is connected with control device 60 is accepted user's indication, perhaps regularly automatically carries out.
And adjusting portion 190 is based on the testing result of test section 82, can the length W2 of the predetermined portions 116a of at least one connecting rod 116 be regulated.This adjusting is following to be carried out, and drives governor motor 193, makes nut 192 relative threaded portion 191 rotate scheduled volumes, regulates the position of connecting rod 116 relative fixation clips 112.This be adjusted in carry out under die opening state also passable.
Above embodiments of the present invention are illustrated, but the present invention is not limited to above-mentioned embodiment, can applies various distortion or displacement to above-mentioned embodiment not departing from the scope of the present invention.
For example, in the above-described embodiment, concentrator marker M is used to the balance adjustment of a plurality of connecting rods, but also can be used for matched moulds operation matched moulds force measurement.
Claims (5)
1. an injection (mo(u)lding) machine, possess according to the connecting rod that acts on the mold clamping force elongation on fixed half and moving half, it is characterized in that,
Be provided with the concentrator marker for the elongation of the above-mentioned connecting rod of image measurement on above-mentioned connecting rod.
2. injection (mo(u)lding) machine as claimed in claim 1, wherein,
This injection (mo(u)lding) machine further possesses:
Image pickup part is made a video recording to the image that comprises above-mentioned concentrator marker; With
Measurement section is carried out image to the image by this image pickup part shooting and is processed, and detects the position of above-mentioned concentrator marker in this image, measures thus the elongation of above-mentioned connecting rod.
3. injection (mo(u)lding) machine as claimed in claim 2, wherein,
Be provided with a plurality of above-mentioned concentrator markers on above-mentioned connecting rod, above-mentioned a plurality of concentrator markers have the interval on the direction parallel with the matched moulds direction,
Above-mentioned image pickup part is made a video recording to the image that comprises above-mentioned a plurality of concentrator markers,
Above-mentioned measurement section is carried out the image processing to the image by above-mentioned image pickup part shooting, detects the concentrator marker spacing on the direction parallel with above-mentioned matched moulds direction, measures thus the elongation of above-mentioned connecting rod.
4. injection (mo(u)lding) machine as claimed in claim 3,
Wherein, also further possess test section, the image by the shooting of above-mentioned image pickup part is carried out image process, and the concentrator marker spacing on the direction of detection and above-mentioned matched moulds perpendicular direction, detect thus the deflection of above-mentioned connecting rod.
5. injection (mo(u)lding) machine as described in any one in claim 2-4, wherein,
Possess:
Fixation clip is equipped with cover half;
Base member links by a plurality of above-mentioned connecting rods and above-mentioned fixation clip, and with above-mentioned fixation clip devices spaced apart set; With
Adjusting portion can be regulated the above-mentioned fixation clip of above-mentioned each connecting rod and the length of the part between above-mentioned base member respectively according to above-mentioned connecting rod,
This adjusting portion is regulated the length of the above-mentioned part of at least one above-mentioned connecting rod based on the measurement result of above-mentioned measurement section.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
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| JP2011276385A JP2013126722A (en) | 2011-12-16 | 2011-12-16 | Injection molding machine |
| JP276385/2011 | 2011-12-16 |
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| CN103158238A true CN103158238A (en) | 2013-06-19 |
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| CN (1) | CN103158238A (en) |
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| CN104647710A (en) * | 2013-11-21 | 2015-05-27 | 住友重机械工业株式会社 | Injection molding machine |
| CN106003635A (en) * | 2015-03-27 | 2016-10-12 | 住友重机械工业株式会社 | Injection molding machine and operation screen of injection molding machine |
| CN106003616A (en) * | 2015-03-27 | 2016-10-12 | 住友重机械工业株式会社 | Injection molding machine |
| CN110352122A (en) * | 2017-02-28 | 2019-10-18 | 住友重机械工业株式会社 | Injection (mo(u)lding) machine and injection moulding method |
| CN110667037A (en) * | 2019-09-23 | 2020-01-10 | 青岛职业技术学院 | Fixed plate for injection mold convenient to installation and adjustment |
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| JP6420091B2 (en) * | 2014-08-25 | 2018-11-07 | ファナック株式会社 | Control device for injection molding machine having tie bar balance adjustment function |
| KR101512314B1 (en) * | 2014-10-28 | 2015-04-15 | (주)태일기계 | System for measuring elongation by electric injection molding machine |
| KR101512319B1 (en) * | 2014-10-28 | 2015-04-15 | (주)태일기계 | Electric injection molding machine able to measure for elongation and parallelization |
| JP6517063B2 (en) * | 2015-03-27 | 2019-05-22 | 住友重機械工業株式会社 | Injection molding machine |
| JP6235541B2 (en) | 2015-09-04 | 2017-11-22 | ファナック株式会社 | Injection molding system |
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Also Published As
| Publication number | Publication date |
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| JP2013126722A (en) | 2013-06-27 |
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Application publication date: 20130619 |