WO2022210272A1 - 型締装置フレーム、及び射出成形機 - Google Patents
型締装置フレーム、及び射出成形機 Download PDFInfo
- Publication number
- WO2022210272A1 WO2022210272A1 PCT/JP2022/014033 JP2022014033W WO2022210272A1 WO 2022210272 A1 WO2022210272 A1 WO 2022210272A1 JP 2022014033 W JP2022014033 W JP 2022014033W WO 2022210272 A1 WO2022210272 A1 WO 2022210272A1
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- Prior art keywords
- mold clamping
- base
- mold
- clamping device
- support
- Prior art date
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- 238000001746 injection moulding Methods 0.000 title claims abstract description 16
- 238000005192 partition Methods 0.000 claims abstract description 7
- 238000000034 method Methods 0.000 description 16
- 230000008569 process Effects 0.000 description 16
- 239000013585 weight reducing agent Substances 0.000 description 8
- 239000012778 molding material Substances 0.000 description 5
- 230000007246 mechanism Effects 0.000 description 4
- 230000004048 modification Effects 0.000 description 4
- 238000012986 modification Methods 0.000 description 4
- 230000008859 change Effects 0.000 description 2
- 230000002950 deficient Effects 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000007792 addition Methods 0.000 description 1
- 230000003321 amplification Effects 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 238000012217 deletion Methods 0.000 description 1
- 230000037430 deletion Effects 0.000 description 1
- 229910003460 diamond Inorganic materials 0.000 description 1
- 239000010432 diamond Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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Classifications
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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
- B29C45/1761—Means for guiding movable mould supports or injection units on the machine base or frame; Machine bases or frames
-
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D17/00—Pressure die casting or injection die casting, i.e. casting in which the metal is forced into a mould under high pressure
- B22D17/20—Accessories: Details
- B22D17/26—Mechanisms or devices for locking or opening dies
- B22D17/263—Mechanisms or devices for locking or opening dies mechanically
-
- 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
- B29C45/1761—Means for guiding movable mould supports or injection units on the machine base or frame; Machine bases or frames
- B29C2045/1768—Means for guiding movable mould supports or injection units on the machine base or frame; Machine bases or frames constructions of C-shaped frame elements
Definitions
- the present invention relates to a mold clamping device frame and an injection molding machine.
- main bodies that are substantially H-shaped when viewed from the front are arranged in front and back in parallel, and the two bodies are integrally engaged at an intermediate horizontal portion to form a is also substantially H-shaped.
- the upper portion of the main body is provided with first and second upper facing portions spaced apart from each other.
- a stationary platen is held vertically on the first upper facing portion.
- the mold clamping cylinder is held on the second upper facing portion.
- the lower portion of the main body is provided with first and second lower facing portions spaced apart from each other. Similar content is also disclosed in Patent Document 2.
- the mold clamping device frame that supports the mold clamping device deforms during mold clamping, and the dividing plane (so-called parting line) that separates the fixed mold and the movable mold that make up the mold device sometimes tilts.
- the deformation of the mold clamping device frame that occurs during mold clamping is released when the mold clamping force is removed or when the mold is opened.
- the mold clamping device frame returning to its original shape the mold sometimes ripped off the molded product, resulting in defective products.
- the mold clamping device frame In order to suppress the deformation of the mold clamping device frame, it is effective to increase the rigidity of the mold clamping device frame. However, if the mold clamping device frame is made thick in order to increase the rigidity of the mold clamping device frame, the weight of the mold clamping device frame increases.
- One aspect of the present invention provides a technology that achieves both weight reduction and high rigidity of the mold clamping device frame.
- a mold clamping device frame supporting a mold clamping device of an injection molding machine includes a first fixing portion, a second fixing portion, a base, a first support portion, and a second support portion. , provided.
- a source for generating a mold clamping force is fixed to the first fixing portion.
- a mold is fixed to the second fixing part.
- the base supports the first fixing part and the second fixing part.
- the first support part supports the base.
- the second support part is spaced apart from the first support part in the mold clamping direction and supports the base.
- At least one of the first support section and the second support section includes a plurality of openings and beams defining the plurality of openings.
- a mold clamping device frame supporting a mold clamping device of an injection molding machine includes a first fixing portion, a second fixing portion, a base, a first support portion, and a second support. and A source for generating a mold clamping force is fixed to the first fixing portion.
- a mold is fixed to the second fixing part.
- the base supports the first fixing part and the second fixing part.
- the first support part supports the base.
- the second support part is spaced apart from the first support part in the mold clamping direction and supports the base.
- At least one of the first support portion and the second support portion includes a tapered portion whose dimension in the mold clamping direction narrows in a direction orthogonal to the mold clamping direction and away from the base.
- the weight of the support can be reduced by providing the support with a plurality of openings. Further, by providing beams that partition a plurality of openings, the openings can be subdivided, the distortion of the openings can be suppressed, and the rigidity of the supporting portion can be increased. Therefore, it is possible to achieve both weight reduction and high rigidity.
- the support portion includes a tapered portion whose dimension in the mold clamping direction narrows in the direction perpendicular to the mold clamping direction and away from the base.
- FIG. 1 is a perspective view showing half of an injection molding machine according to one embodiment.
- FIG. 2 is a side view showing a mold clamping device frame according to one embodiment.
- FIG. 3 is a side view showing a mold clamping device frame according to a first modified example.
- FIG. 4 is a side view showing a mold clamping device frame according to a second modified example.
- FIG. 5 is a side view showing a mold clamping device frame according to a third modified example.
- symbol may be attached
- the X-axis direction, Y-axis direction and Z-axis direction are directions perpendicular to each other.
- the X-axis direction and Y-axis direction represent the horizontal direction, and the Z-axis direction represents the vertical direction.
- the injection molding machine 1 includes a mold clamping device 2 that clamps a mold device 9 and a mold clamping device frame 3 that supports the mold clamping device 2 .
- the mold clamping device 2 will be described.
- the mold clamping device 2 is, for example, a horizontal mold whose mold clamping direction is horizontal.
- the X-axis direction is the mold clamping direction
- the Y-axis direction is the width direction of the injection molding machine 1 .
- the present invention is not limited to the horizontal type, and may be a vertical type in which the clamping direction is vertical.
- the mold clamping device 2 performs mold closing, pressure increase, mold clamping, depressurization, and mold opening of the mold device 9 .
- the mold device 9 includes a fixed mold 91 and a movable mold 92 .
- the mold closing direction (for example, the positive direction of the X-axis) that brings the movable mold 92 closer to the fixed mold 91 is also referred to as the front, and the mold-opening direction (for example, the negative direction of the X axis) that separates the movable mold 92 from the fixed mold 91 is called forward. Also called backward.
- the mold clamping device 2 includes a stationary platen 21 to which a stationary mold 91 is attached, a movable platen 22 to which a movable mold 92 is attached, and moves the movable platen 22 in the mold clamping direction with respect to the stationary platen 21 to generate a mold clamping force. and a mounting plate 24 to which the source 23 is attached.
- the fixed platen 21 is fixed to the mold clamping device frame 3 .
- a stationary mold 91 is attached to the surface (for example, the rear surface) of the stationary platen 21 facing the movable platen 22 .
- a through hole 211 is formed in the center of the fixed platen 21 so as to pass through the fixed platen 21 in the front-rear direction.
- a nozzle of an injection device (not shown) is inserted into the through hole 211 and touches the fixed mold 91 .
- the movable platen 22 is arranged movably in the mold clamping direction with respect to the mold clamping device frame 3 .
- a guide (not shown) for guiding the movable platen 22 may be provided on the mold clamping device frame 3 .
- a movable mold 92 is attached to a surface (for example, the front surface) of the movable platen 22 facing the fixed platen 21 .
- the source 23 includes a hydraulic cylinder 231, for example.
- the hydraulic cylinder 231 moves the movable platen 22 back and forth with respect to the fixed platen 21 to perform mold closing, pressure increase, mold clamping, pressure release, and mold opening of the mold device 9 .
- the hydraulic cylinder 231 includes, for example, a cylinder tube 232, a piston (not shown) provided inside the cylinder tube 232, and a piston rod 233 that moves together with the piston.
- the internal space of the cylinder tube 232 is divided into a front chamber and a rear chamber by a piston.
- the piston rod 233 extends forward from the piston and protrudes forward from the cylinder tube 232 .
- a rear end of the piston rod 233 is fixed to the piston, and a front end of the piston rod 233 is fixed to the movable platen 22 .
- the front end of the piston rod 233 is fixed to the center of the rear surface of the movable platen 22, for example.
- a hydraulic pump (not shown) supplies hydraulic pressure to the rear chamber of the cylinder tube 232 when the mold device 9 is closed and pressurized. As a result, the piston is pushed forward, the front chamber is contracted, and the oil is discharged from the front chamber. Also, the piston rod 233 is advanced together with the piston, and the movable platen 22 is advanced.
- the hydraulic pump supplies hydraulic pressure to the front chamber of the cylinder tube 232 when the mold device 9 is depressurized and when the mold is opened.
- the piston is pushed rearward, the rear chamber is contracted, and the oil is discharged from the rear chamber.
- the piston rod 233 is retracted together with the piston, and the movable platen 22 is retracted.
- the generation source 23 may have an electric motor and a toggle mechanism operated by the electric motor.
- the toggle mechanism amplifies the driving force of the electric motor and transmits it to the movable platen 22 .
- a toggle mechanism is arranged between the movable platen 22 and the mounting plate 24 .
- the toggle mechanism has a crosshead that moves in the clamping direction, and a pair of link groups that bend and stretch as the crosshead moves.
- Each of the pair of link groups has a first link and a second link that are flexibly connected by a pin or the like.
- the first link is swingably attached to the movable platen 22 with a pin or the like.
- the second link is swingably attached to the mounting plate 24 with a pin or the like.
- a second link is attached to the crosshead via a third link.
- the third link is swingably attached to the second link with a pin or the like, and is swingably attached to the crosshead with a pin or the like.
- the crosshead When the electric motor is operated, the crosshead is moved forward and backward, the first link and the second link are bent and stretched, and the movable platen 22 is moved forward and backward.
- the first link and the second link are stretched, a mold clamping force is generated with an amplification factor according to the angle formed by the first link and the second link.
- the mold clamping device 2 performs a mold closing process, a pressure increasing process, a mold clamping process, a depressurizing process, a mold opening process, etc. under the control of the control device.
- the control device is, for example, a computer, and has a CPU (Central Processing Unit) and a storage medium such as memory.
- the control device performs various controls by causing the CPU to execute programs stored in a storage medium.
- CPU Central Processing Unit
- the hydraulic cylinder 231 is driven to advance the movable platen 22 from the mold closing start position to the mold closing completion position at a set speed, and the movable mold 92 is brought into contact with the fixed mold 91 .
- the position or moving speed of the movable platen 22 is detected by a position detector or speed detector.
- the hydraulic pressure of the hydraulic cylinder 231 may be controlled.
- the hydraulic cylinder 231 is further driven to further advance the movable platen 22 from the mold closing completion position to the mold clamping position, thereby generating mold clamping force.
- the mold clamping force is detected, for example, by a hydraulic pressure detector.
- the hydraulic pressure detector detects the hydraulic pressure in the rear chamber of the hydraulic cylinder 231 and transmits a signal corresponding to the detected hydraulic pressure to the control device.
- the hydraulic cylinder 231 is driven to maintain the position of the movable platen 22 at the mold clamping position.
- the mold clamping force generated in the pressurizing process is maintained.
- a cavity space is formed between the movable mold 92 and the fixed mold 91, and the injection device fills the cavity space with a liquid molding material from a nozzle.
- a molded product is obtained by solidifying the filled molding material.
- the molding material contains resin.
- the number of cavity spaces may be one or plural. In the latter case, multiple moldings are obtained simultaneously.
- the insert material may be arranged in part of the cavity space, and the other part of the cavity space may be filled with the molding material.
- a molded product in which the insert material and the molding material are integrated is obtained.
- the hydraulic cylinder 231 is driven to retract the movable platen 22 from the mold clamping position to the mold opening start position to reduce the mold clamping force.
- the mold opening start position and the mold closing completion position may be the same position.
- the hydraulic cylinder 231 is driven to retract the movable platen 22 from the mold opening start position to the mold opening completion position at a set speed.
- the movable mold 92 is separated from the fixed mold 91 .
- the molded product is ejected from the movable mold 92 .
- the hydraulic pressure of the hydraulic cylinder 231 may be controlled.
- the source 23 when the source 23 generates the mold clamping force, a repulsive force equal in magnitude to the mold clamping force and opposite in direction is generated, and the stress is balanced.
- the mounting plate 24 can move back and forth in the X-axis direction.
- the tie bar extends according to the mold clamping force, and the elastic restoring force of the tie bar generates a repulsive force.
- both the fixed platen 21 and the mounting platen 24 are fixed to the mold clamping device frame 3 . Therefore, when the source 23 generates the mold clamping force, the mold clamping device frame 3 is deformed. A repulsive force is generated by the elastic restoring force of the mold clamping device frame 3, and the stress is balanced.
- the mold clamping device frame was deformed during mold clamping, and the division surface (so-called parting line) dividing the fixed mold 91 and the movable mold 92 sometimes tilted.
- the deformation of the mold clamping device frame that occurs during mold clamping is released when the mold clamping force is removed or when the mold is opened.
- the mold clamping device frame returning to its original shape the mold sometimes ripped off the molded product, resulting in defective products.
- the mold clamping device frame 3 has a pair of vertical plates 30 (only one is shown in FIGS. 1 and 2) spaced apart in the Y-axis direction.
- the pair of vertical plates 30 may be connected by a beam or the like extending in the Y-axis direction.
- the vertical plate 30 includes a first fixing portion 31 to which the generation source 23 that generates the mold clamping force is fixed, a second fixing portion 32 to which the fixed mold 91 is fixed, the first fixing portion 31 and the second fixing portion 32, a first support portion 34 that supports the base 33, a second support portion 35 that supports the base 33 at a distance from the first support portion 34 in the mold clamping direction, Prepare.
- the first fixing portion 31, the second fixing portion 32, the base 33, the first supporting portion 34, and the second supporting portion 35 are formed integrally by casting or the like, but they are separately formed. may be formed and welded.
- the first fixing portion 31 is, for example, a right-angled trapezoidal plate as viewed in the Y-axis direction.
- the first fixing portion 31 has a vertical rear surface 311, a horizontal upper surface 312, and an inclined surface 313 that inclines downward toward the front.
- the rear surface 311 of the first fixing portion 31 is brought into contact with the front surface of the mounting board 24 , and the generation source 23 is mounted on the mounting board 24 .
- the second fixing part 32 is, for example, a rectangular trapezoidal plate when viewed in the Y-axis direction.
- the second fixing portion 32 has a vertical rear surface 321, a horizontal upper surface 322, and an inclined surface 323 that slopes downward toward the front.
- the front surface of the fixed platen 21 is brought into contact with the rear surface 321 of the second fixed portion 32 , and the fixed mold 91 is attached to the rear surface of the fixed platen 21 .
- the base 33 is a rectangular plate elongated in the X-axis direction when viewed in the Y-axis direction.
- the base 33 has, for example, a horizontal upper surface 331 , a rear surface 332 inclined downward toward the rear, and a vertical front surface 333 .
- the rear surface 332 is an inclined surface in this embodiment, it may be a vertical surface.
- a first fixing portion 31 and a second fixing portion 32 are provided on the upper surface 331 of the base 33 with a gap therebetween in the X-axis direction. Further, the movable platen 22 is mounted on the upper surface 331 of the base 33 between the first fixing portion 31 and the second fixing portion 32 so as to be movable back and forth in the X-axis direction.
- a guide (not shown) for guiding the movable platen 22 may be provided on the upper surface of the base 33 .
- the first support portion 34 supports the base 33 from below.
- the first support portion 34 is provided at one end (for example, the rear end) of the base 33 in the X-axis direction.
- the first support portion 34 is provided directly below the first fixing portion 31, for example.
- the first support portion 34 and the second support portion 35 are separated by the largest opening 36 as viewed in the Y-axis direction.
- the first support portion 34 has a dimension in the clamping direction (eg, a dimension in the X-axis direction) toward a first direction (eg, the Z-axis negative direction, ie, downward direction) perpendicular to the clamping direction and away from the base 33 . ) includes a narrowing first tapered portion 341 . Therefore, compared to the case where the first support portion 34 has a constant dimension in the X-axis direction from the top end to the bottom end, the portion of the first support portion 34 near the first fixing portion 31 that receives the mold clamping force has high rigidity. The weight of the portion far from the first fixing portion 31 can be reduced. Therefore, it is possible to achieve both weight reduction and high rigidity.
- the first tapered portion 341 has, for example, a rear surface 341a that slopes forward as it goes downward, and a front surface 341b that slopes rearward as it goes downward.
- the dimension in the X-axis direction from the rear surface 341a to the front surface 341b narrows downward.
- Either the rear surface 341a or the front surface 341b may be a vertical surface instead of an inclined surface.
- the first support portion 34 may include a first constant width portion 342 having a constant dimension in the X-axis direction between the first tapered portion 341 and the base 33 .
- the first constant width portion 342 has a vertical rear surface 342a and a vertical front surface 342b.
- the X-axis dimension from the rear surface 342a to the front surface 342b is constant.
- constant X-axis dimension means that the minimum value of the X-axis direction dimension is 95% or more when the maximum value of the X-axis direction dimension is 100%.
- first support portion 34 includes the first constant width portion 342 between the first tapered portion 341 and the base 33, compared to the case where the first support portion 34 includes only the first tapered portion 341, A portion of the first support portion 34 near the first fixing portion 31 that receives the mold clamping force can be made more rigid.
- the first support section 34 has, for example, multiple (eg, three) openings 343A to 343C and multiple (eg, three) beams 344A to 344C.
- the openings 343A-343C are smaller than the opening 36 that separates the first support portion 34 and the second support portion 35 from each other.
- the number of beams may not be plural, and may be one. If the number of beams is one, the number of openings is two.
- the weight of the first support part 34 can be reduced. Further, by providing the beams 344A to 344C that partition the openings 343A to 343C, the openings 343A to 343C can be subdivided, distortion of the openings 343A to 343C can be suppressed, and the rigidity of the first support portion 34 can be increased. Therefore, it is possible to achieve both weight reduction and high rigidity. If the number of beams is plural, the opening can be further subdivided, and the weight can be reduced and the rigidity can be increased.
- the three beams 344A to 344C are combined in an inverted Y shape, for example, when viewed in the Y-axis direction.
- the beam 344A extends downward from the base 33.
- the beam 344B is inclined upward from the corner between the rear surface 342a of the first constant width portion 342 and the rear surface 341a of the first tapered portion 341 toward the front.
- the beam 344C is inclined upward from the corner of the front surface 342b of the first constant width portion 342 and the front surface 341b of the first tapered portion 341 toward the rear.
- the three openings 343A-343C are partitioned by three beams 344A-344C. Of the three openings 343A-343C, the largest opening 343A is formed at the bottom.
- the largest opening 343A has, for example, a rhombus shape when viewed in the Y-axis direction.
- the second support part 35 supports the base 33 from below.
- the second support portion 35 is provided at the other end (for example, the front end) of the base 33 in the X-axis direction.
- the second support portion 35 is provided directly below the second fixing portion 32, for example.
- the second support portion 35 and the first support portion 34 are separated by the largest opening 36 as viewed in the Y-axis direction.
- the second support portion 35 includes, for example, a second tapered portion 351 whose dimension in the mold clamping direction (eg, the dimension in the X-axis direction) narrows in the first direction (eg, the Z-axis negative direction, that is, the downward direction). Therefore, compared to the case where the second support portion 35 has a constant dimension in the X-axis direction from the top end to the bottom end, the portion of the second support portion 35 near the second fixing portion 32 that receives the mold clamping force has high rigidity. The weight of the portion far from the second fixing portion 32 can be reduced. Therefore, it is possible to achieve both weight reduction and high rigidity.
- a second tapered portion 351 whose dimension in the mold clamping direction (eg, the dimension in the X-axis direction) narrows in the first direction (eg, the Z-axis negative direction, that is, the downward direction). Therefore, compared to the case where the second support portion 35 has a constant dimension in the X-axis direction from the top end to the bottom end,
- the second tapered portion 351 has, for example, a rear surface 351a that slopes forward as it goes downward, and a front surface 351b that slopes rearward as it goes downward.
- the dimension in the X-axis direction from the rear surface 351a to the front surface 351b narrows downward.
- Either the rear surface 351a or the front surface 351b may be a vertical surface instead of an inclined surface.
- the second support portion 35 may include a second constant width portion 352 having a constant dimension in the X-axis direction between the second tapered portion 351 and the base 33 .
- the second constant width portion 352 has a vertical rear surface 352a and a vertical front surface 352b.
- the X-axis dimension from the rear surface 352a to the front surface 352b is constant.
- the second support portion 35 includes the second constant width portion 352 between the second tapered portion 351 and the base 33, compared to the case where the second support portion 35 includes only the second tapered portion 351, A portion of the second support portion 35 near the second fixing portion 32 that receives the mold clamping force can be made more rigid.
- the second support section 35 has, for example, multiple (eg, three) openings 353A to 353C and multiple (eg, three) beams 354A to 354C.
- the openings 353A-353C are smaller than the opening 36 that separates the first support portion 34 and the second support portion 35 from each other.
- the number of beams may not be plural, and may be one. If the number of beams is one, the number of openings is two.
- the weight of the second support portion 35 can be reduced. Further, by providing the beams 354A to 354C that partition the openings 353A to 353C, the openings 353A to 353C can be subdivided, distortion of the openings 353A to 353C can be suppressed, and the rigidity of the second support portion 35 can be increased. Therefore, it is possible to achieve both weight reduction and high rigidity. If the number of beams is plural, the opening can be further subdivided, and the weight can be reduced and the rigidity can be increased.
- the three beams 354A to 354C are combined in an inverted Y shape, for example, when viewed in the Y-axis direction.
- the beam 354A extends downward from the base 33.
- the beam 354B is inclined upward from the corner of the rear surface 352a of the second constant width portion 352 and the rear surface 351a of the second tapered portion 351 toward the front.
- the beam 354C is inclined upward from the corner of the front surface 352b of the second constant width portion 352 and the front surface 351b of the second tapered portion 351 toward the rear.
- the three openings 353A-353C are partitioned by three beams 354A-354C. Of the three openings 353A-353C, the largest opening 353A is formed at the bottom.
- the largest opening 353A has, for example, a diamond shape when viewed in the Y-axis direction.
- first support portion 34 includes the first tapered portion 341 and the second support portion 35 includes the second tapered portion 351 in this embodiment, the present invention is not limited to this.
- first support portion 34 includes a first tapered portion 341
- second support portion 35 may have a constant X-axis dimension from top to bottom.
- first support portion 34 may have a constant dimension in the X-axis direction from the top end to the bottom end.
- the vertical plate 30 may further include a connecting base 37 that connects the first support portion 34 and the second support portion 35 .
- the connecting base 37 connects, for example, the lower ends of the first support portion 34 and the second support portion 35 to prevent the lower ends from opening during mold clamping.
- the connecting base 37 has a rectangular shape elongated in the X-axis direction, for example, when viewed in the Y-axis direction.
- the mold clamping device frame 3 according to the first modified example will be described with reference to FIG. Differences between the first modified example and the above embodiment will be mainly described below.
- the first support portion 34 extends between the first tapered portion 341 and the base 33 in the first direction (for example, the negative direction of the Z axis, that is, the downward direction). It includes a first base portion 345 that narrows (eg, in the X-axis dimension).
- the first base 345 has, for example, a vertical rear surface 345a and a front surface 345b that slopes downward toward the rear.
- the rear surface 345a of the first base portion 345 and the rear surface 341a of the first tapered portion 341 are connected in a polygonal line.
- the front surface 345b of the first base portion 345 and the front surface 341b of the first tapered portion 341 are connected in a polygonal line.
- the dimension in the X-axis direction of the first base portion 345 gradually narrows in the first direction as compared to the dimension in the X-axis direction of the first tapered portion 341 .
- the rear surface 345a of the first base portion 345 has a smaller inclination with respect to the vertical plane than the rear surface 341a of the first tapered portion 341, and forms a smaller angle with the vertical plane.
- the front surface 345b of the first base portion 345 has a smaller inclination with respect to the vertical plane than the front surface 341b of the first tapered portion 341, and forms a smaller angle with the vertical plane.
- the dimension in the X-axis direction of the first base portion 345 gradually narrows in the first direction as compared to the dimension in the X-axis direction of the first tapered portion 341 . Therefore, compared to the case where the dimension in the X-axis direction narrows at a constant rate of change from the upper end to the lower end of the first support portion 34, the The portion can be made more rigid, and the portion far from the first fixing portion 31 can be made lighter.
- the second support portion 35 extends between the second tapered portion 351 and the base 33 in a first direction (for example, the Z-axis negative direction, i.e., downward direction) in a dimension in the mold clamping direction (for example, in the X-axis direction). ) includes a narrowed second base 355 .
- the second base 355 has, for example, a rear surface 355a that slopes downward toward the front, and a vertical front surface 355b.
- the rear surface 355a of the second base portion 355 and the rear surface 351a of the second tapered portion 351 are connected in a polygonal line.
- the front surface 355b of the second base portion 355 and the front surface 351b of the second tapered portion 351 are connected in a polygonal line.
- the dimension in the X-axis direction of the second base portion 355 gradually narrows in the first direction as compared to the dimension in the X-axis direction of the second tapered portion 351 .
- the rear surface 355a of the second base portion 355 has a smaller inclination with respect to the vertical plane than the rear surface 351a of the second tapered portion 351, and forms a smaller angle with the vertical plane.
- the front surface 355b of the second base portion 355 has a smaller inclination with respect to the vertical plane than the front surface 351b of the second tapered portion 351, and forms a smaller angle with the vertical plane.
- the X-axis direction dimension of the second base portion 355 gradually narrows in the first direction as compared to the X-axis direction dimension of the second tapered portion 351 . Therefore, compared to the case where the dimension in the X-axis direction narrows at a constant rate of change from the upper end to the lower end of the second support portion 35, the second support portion 35 is closer to the first fixing portion 31 that receives the mold clamping force.
- the portion can be made more rigid, and the portion far from the first fixing portion 31 can be made lighter.
- first support portion 34 includes the first base portion 345 and the second support portion 35 includes the second base portion 355 in this modification, the present invention is not limited to this.
- first support portion 34 may include the first base portion 345 and the second support portion 35 may include the second constant width portion 352 .
- first support portion 34 may include the first constant width portion 342 and the second support portion 35 may include the second base portion 355 .
- the first tapered portion 341 when viewed from a second direction (eg, Y-axis direction) perpendicular to both the mold clamping direction and the first direction, the first tapered portion 341 has both end surfaces in the mold clamping direction (rear surface 341a and The front surface 341b) is curved and bulges outward. Note that only one of the rear surface 341a and the front surface 341b may be curved when viewed from the second direction, and may bulge outward.
- the portion of the first tapered portion 341 near the first fixing portion 31 that receives the mold clamping force can be made more rigid.
- the portion far from the first fixing portion 31 can be made lighter.
- the second tapered portion 351 when viewed from the second direction, has both end surfaces (rear surface 351a and front surface 351b) in the mold clamping direction that are curved and bulge outward. Note that only one of the rear surface 351a and the front surface 351b may be curved and bulge outward when viewed from the second direction. Compared to the case where both the rear surface 351a and the front surface 351b are straight when viewed from the second direction, the portion of the second tapered portion 351 near the second fixing portion 32 that receives the mold clamping force can be made more rigid. , the portion far from the second fixing portion 32 can be made lighter.
- both the first tapered portion 341 and the second tapered portion 351 when viewed in the Y-axis direction have curved end surfaces in the mold clamping direction or one end surface in the mold clamping direction.
- both end surfaces in the mold clamping direction or one end surface in the mold clamping direction may be curved.
- both the first support portion 34 and the second support portion 35 have a constant dimension in the X-axis direction from the top end to the bottom end. If at least one of the first support portion 34 and the second support portion 35 includes a plurality of openings and beams, both weight reduction and high rigidity can be achieved.
- the first support section 34 has multiple (eg, four) openings 343A to 343D and multiple (eg, four) beams 344A to 344D.
- the openings 343D-343D are smaller than the opening 36 that separates the first support portion 34 and the second support portion 35 from each other.
- the number of beams may not be plural, and may be one. If the number of beams is one, the number of openings is two.
- the weight of the first support portion 34 can be reduced.
- the openings 343A to 343D can be subdivided, the distortion of the openings 343A to 343D can be suppressed, and the rigidity of the first support portion 34 can be increased. If the number of beams is plural, the opening can be further subdivided, and the weight can be reduced and the rigidity can be increased.
- the four beams 344A to 344D are combined in, for example, an X shape when viewed in the Y-axis direction.
- the beam 344A is inclined downward toward the front from the base 33 .
- the beam 344B is inclined downward toward the rear from the base 33 .
- the beam 344C is continuously connected to the beam 344A and slopes downward toward the front.
- the beam 344D is continuously connected to the beam 344B and slopes downward toward the rear.
- the four openings 343A-343D are partitioned by four beams 344D-344D.
- the two openings 343A and 343B have, for example, an isosceles triangle shape when viewed in the Y-axis direction, and are arranged vertically symmetrically.
- the remaining two openings 343C and 343D have, for example, an isosceles triangular shape when viewed in the Y-axis direction, and are arranged symmetrically in the front-rear direction.
- the second support portion 35 has a plurality (eg, four) of openings 353A to 353D and a plurality (eg, four) of beams 354A to 354D.
- the openings 353D-353D are smaller than the opening 36 that separates the first support portion 34 and the second support portion 35 from each other.
- the number of beams may not be plural, and may be one. If the number of beams is one, the number of openings is two.
- the weight of the second support portion 35 can be reduced. Further, by providing the beams 354A to 354D that partition the openings 353A to 353D, the openings 353A to 353D can be subdivided, the distortion of the openings 353A to 353D can be suppressed, and the rigidity of the second support portion 35 can be increased. If the number of beams is plural, the opening can be further subdivided, and the weight can be reduced and the rigidity can be increased.
- the four beams 354A to 354D are combined in, for example, an X shape when viewed in the Y-axis direction.
- the beam 354A is inclined downward toward the front from the base 33 .
- the beam 354B is inclined downward toward the rear from the base 33 .
- the beam 354C is continuously connected to the beam 354A and slopes downward toward the front.
- the beam 354D is continuously connected to the beam 354B and slopes downward toward the rear.
- the four openings 353A-353D are partitioned by four beams 354D-354D.
- the two openings 353A and 353B have, for example, an isosceles triangle shape when viewed in the Y-axis direction, and are arranged vertically symmetrically.
- the remaining two openings 353C and 353D have, for example, an isosceles triangle shape when viewed in the Y-axis direction, and are arranged symmetrically in the front-rear direction.
- both the first support part 34 and the second support part 35 include a plurality of openings and beams in the third modification, only one of them may include a plurality of openings and beams.
- injection molding machine mold clamping device 3 mold clamping device frame 31 first fixing portion 32 second fixing portion 33 base 34 first support portion 341 first tapered portions 343A to 343C openings 344A to 344C beam 35 second support portion 351 Second tapered portions 353A-353C Openings 354A-354C Beams
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
Abstract
Description
2 型締装置
3 型締装置フレーム
31 第1固定部
32 第2固定部
33 基台
34 第1支持部
341 第1先細部
343A~343C 開口
344A~344C 梁
35 第2支持部
351 第2先細部
353A~353C 開口
354A~354C 梁
Claims (8)
- 射出成形機の型締装置を支持する型締装置フレームであって、
型締力を発生させる発生源が固定される第1固定部と、
金型が固定される第2固定部と、
前記第1固定部と前記第2固定部を支持する基台と、
前記基台を支持する第1支持部と、
前記第1支持部と型締方向に間隔をおいて、前記基台を支持する第2支持部と、
を備え、
前記第1支持部と前記第2支持部のうち少なくとも1つは、複数の開口と、複数の前記開口を区画する梁と、を含む、型締装置フレーム。 - 前記梁は、複数である、請求項1に記載の型締装置フレーム。
- 前記第1支持部と前記第2支持部のうち少なくとも1つは、前記型締方向に直交し且つ前記基台から離れる第1方向に向かって前記型締方向における寸法が狭くなる先細部を含む、請求項1又は2に記載の型締装置フレーム。
- 射出成形機の型締装置を支持する型締装置フレームであって、
型締力を発生させる発生源が固定される第1固定部と、
金型が固定される第2固定部と、
前記第1固定部と前記第2固定部を支持する基台と、
前記基台を支持する第1支持部と、
前記第1支持部と型締方向に間隔をおいて、前記基台を支持する第2支持部と、
を備え、
前記第1支持部と前記第2支持部のうち少なくとも1つは、前記型締方向に直交し且つ前記基台から離れる第1方向に向かって前記型締方向における寸法が狭くなる先細部を含む、型締装置フレーム。 - 前記第1支持部と前記第2支持部のうち少なくとも1つは、前記先細部と前記基台との間に、前記型締方向における寸法が一定である定幅部を含む、請求項3又は4に記載の型締装置フレーム。
- 前記型締方向と前記第1方向の両方向に対して垂直な第2方向から見て、前記先細部は、前記型締方向一端面又は両端面が曲線状であり、外側に膨らんでいる、請求項3~5のいずれか1項に記載の型締装置フレーム。
- 前記第1支持部と前記第2支持部のうち少なくとも1つは、前記先細部と前記基台との間に、前記第1方向に向かって前記型締方向における寸法が狭くなる基部を含み、
前記基部の前記型締方向における寸法は、前記先細部の前記型締方向における寸法よりも、緩やかに前記第1方向に向かって狭くなる、請求項3又は4に記載の型締装置フレーム。 - 請求項1~7のいずれか1項に記載の型締装置フレームと、
前記型締装置フレームで支持される型締装置と、
を備える、射出成形機。
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DE112022001830.5T DE112022001830T5 (de) | 2021-03-29 | 2022-03-24 | Formschliess-/klemmvorrichtungs-rahmen und spritzgiessmaschine |
CN202280007399.9A CN116829280A (zh) | 2021-03-29 | 2022-03-24 | 合模装置框架及注射成型机 |
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Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH05208433A (ja) * | 1992-01-31 | 1993-08-20 | Nissei Plastics Ind Co | 射出成形機の型締用c型フレーム |
JP2011501709A (ja) * | 2007-10-22 | 2011-01-13 | ザフィア プラスティクス マシーナリー ゲーエムベーハー | 力を吸収する閉じた系を有する射出装置 |
JP2016055563A (ja) * | 2014-09-11 | 2016-04-21 | ファナック株式会社 | 射出成形機 |
JP2016137662A (ja) * | 2015-01-28 | 2016-08-04 | 住友重機械工業株式会社 | 射出成形機 |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH07148806A (ja) | 1993-11-29 | 1995-06-13 | Japan Steel Works Ltd:The | 型締フレーム及び型締装置並びに射出成形機用型締装置 |
JP3240274B2 (ja) | 1997-08-26 | 2001-12-17 | 東芝機械株式会社 | 射出成形機の型締装置 |
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- 2022-03-24 WO PCT/JP2022/014033 patent/WO2022210272A1/ja active Application Filing
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Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH05208433A (ja) * | 1992-01-31 | 1993-08-20 | Nissei Plastics Ind Co | 射出成形機の型締用c型フレーム |
JP2011501709A (ja) * | 2007-10-22 | 2011-01-13 | ザフィア プラスティクス マシーナリー ゲーエムベーハー | 力を吸収する閉じた系を有する射出装置 |
JP2016055563A (ja) * | 2014-09-11 | 2016-04-21 | ファナック株式会社 | 射出成形機 |
JP2016137662A (ja) * | 2015-01-28 | 2016-08-04 | 住友重機械工業株式会社 | 射出成形機 |
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