CN102211404A - Die opening/closing mechanism of thermoforming machine - Google Patents

Die opening/closing mechanism of thermoforming machine Download PDF

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Publication number
CN102211404A
CN102211404A CN2011101296748A CN201110129674A CN102211404A CN 102211404 A CN102211404 A CN 102211404A CN 2011101296748 A CN2011101296748 A CN 2011101296748A CN 201110129674 A CN201110129674 A CN 201110129674A CN 102211404 A CN102211404 A CN 102211404A
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CN
China
Prior art keywords
cam
connecting rod
cylindrical roller
thermoforming machine
gear shaft
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN2011101296748A
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Chinese (zh)
Inventor
陈少克
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Shantou University
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Shantou University
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Publication date
Application filed by Shantou University filed Critical Shantou University
Priority to CN2011101296748A priority Critical patent/CN102211404A/en
Publication of CN102211404A publication Critical patent/CN102211404A/en
Pending legal-status Critical Current

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Abstract

The invention relates to a die opening/closing mechanism of a thermoforming machine. The die opening/closing mechanism comprises a cam mechanism and a crankshaft connecting rod mechanism, wherein the cam mechanism comprises a servo driving mechanism, a bearing mechanism and a cam moving mechanism; the servo driving mechanism is used for driving a gear on a gear shaft to rotate through a servo motor; the bearing mechanism is used for bearing the gear shaft and the cam moving mechanism through a bearing seat and a rolling bearing and is fixed on a fixed template of the thermoforming machine; and the cam moving mechanism comprises a cam, a cylindrical roller, a guide sliding block, a push rod and the like, the gear shaft is used for driving the guide sliding block to rotate, the cylindrical roller is driven by the guide sliding block to move along the contour of the cam and to drive the push rod, so that the push rod swings in a reciprocating manner to provide power for the reciprocating movement of the crankshaft connecting rod mechanism. The die opening/closing mechanism provided by the invention adopts a brand new driving means; the cam connecting rod mechanism is driven by the servo motor, and the die closing operation is realized; the die opening/closing mechanism has the advantages of an electric type die opening/closing mechanism; and the servo motor has the advantages of continuous movement, high efficiency and long service life.

Description

The thermoforming machine clasp mould mechanism
Technical field
The present invention relates to a kind of clasp mould mechanism, especially a kind of clasp mould mechanism of thermoforming machine.
Background technology
The thermoforming machine clasp mould mechanism can be divided into three kinds of fluid pressure type, hydraulic-machinery formula and electrodynamic types by its manner of execution.The kind of drive of fluid pressure type clasp mould mechanism has single cylinder direct press type, liquid-filled, booster-type, type voltage regulation, two plate direct press types etc.It is to rely on the pressure of liquid directly to lock mould, and after the pressure of liquid was removed, clamp force also disappeared thereupon.The fluid pressure type clasp mould mechanism has many unique advantages aspect moulding precision, the complex-shaped goods making.Adopt the fluid pressure type clasp mould mechanism can realize bigger folding line journey; obtain very big clamp force; grasp but the speed of service of its moving platen is slow, power cost is big, cycle period is long, the control technology difficulty is big, machining accuracy is high, hydraulic technique is also difficult, cause that mechanism efficiency is low, energy consumption greatly, not environmental protection.
Hydraulic-machinery formula clasp mould mechanism utilizes linkage or toggle fagging mechanism, under the effect of oil pressure, makes clamping system generation prestressing force and locks mould.Be characterized in self-locking action, promptly after mold-locked, even oil pressure is removed, clamp force can not disappear yet.And because linkage has boosting function, therefore available less oil cylinder obtains bigger clamp force.But adopt hydraulic-machinery formula clasp mould mechanism, the speed of service of moving platen is slow, power cost is big, cycle period is long, and the stroke of moving platen is less, and parts depreciation is big, and the entire mechanism more complicated, and volume is big.
The electrodynamic type clasp mould mechanism utilizes crank connecting rod mechanism, under the effect of motor, by the boosting function locking mould of crank connecting rod mechanism.Adopt the clasp mould mechanism of full electric type, the speed of service of moving platen is fast, power cost is less, cycle period is short, mechanism efficiency is high, energy consumption is little, and the fairly simple compactness of entire mechanism, and machining and installation are also than being easier to.The use of electrodynamic type clasp mould mechanism in recent years is more and more general, and the full hydraulic clasp mould mechanism is replaced by the full electric type clasp mould mechanism gradually.
Present electrodynamic type clasp mould mechanism adopts the driven by servomotor ball screw more; drive crank connecting rod mechanism and realize its folding mould; moving up and down of workbench; need transfer realization by servomotor is positive and negative; because the effect of inertia force, the speed of motor is restricted, thereby influences the machine high-speed cruising; and also wearing and tearing easily of ball screw, influence service life of machine.
Summary of the invention
Patent of the present invention is a kind of advantage with electrodynamic type clasp mould mechanism, but servomotor continuous motion simultaneously, efficient height, long thermoforming machine clasp mould mechanism of life-span.
The technical solution used in the present invention is as follows: a kind of thermoforming machine clasp mould mechanism is characterized in that: comprise cam mechanism and crank connecting rod mechanism.
Described cam mechanism comprises servo-drive, supporting device and camming movement mechanism, and described servo-actuating device is rotated by the gear on the servomotor driven gear axle; Supporting device supports gear shaft and camming movement mechanism and be fixed on the solid plate of thermoforming machine by supporting base, rolling bearing; Described camming movement mechanism is made up of cam, cylindrical roller, slider guide and push rod etc., gear shaft drives the slider guide rotation, cylindrical roller is under the drive of slider guide, one side is along the contour motion of cam, drive push rod on the one hand, make the reciprocally swinging of push rod, for the reciprocating motion of crank connecting rod mechanism provides power.
Described servo-drive is rotated by the gear on the servomotor driven gear axle, and gear is fixed on gear shaft by key, and gear shaft is fixed on the supporting device by rolling bearing, and servo-drive provides power for clasp mould mechanism.
Described supporting device by two supporting bases by on the solid plate that is bolted to thermoforming machine, supporting base drives by two rolling bearing supporting servos, the cam of camming movement mechanism is crossed and is bolted on the supporting base, and supporting device plays supporting servo and drives and camming movement mechanism.
The cam of described camming movement mechanism is crossed and is bolted on the supporting base, play motion track guiding, the slider guide of camming movement mechanism is fixed on the gear shaft by key, when gear shaft rotates, slider guide rotates together, one cylindrical roller is arranged in the slider guide, and the rotation of slider guide drives the cylindrical roller rotation on the one hand, and one side is along the guide groove movement of slider guide.
Described cylindrical roller is made up of three parts, its middle part is connected with slider guide, can be along the guide groove movement of slider guide, one end is connected with cam, can move along the cam locus of cam, the other end of cylindrical roller is connected with push rod, promote pushrod movement, when gear shaft rotates continuously, cylindrical roller rotates around gear shaft under the guiding of slider guide on the one hand, moves along cam locus on the one hand, realizes the reciprocally swinging of push rod, for the reciprocating motion of crank connecting rod mechanism provides power, realize simultaneously rotatablely moving continuously of servomotor is converted to reciprocally swinging intermittently.
The number of described crank connecting rod mechanism is two, each crank connecting rod mechanism by about two fork groups form, two fork groups link together with connecting rod and cylindrical roller, when push rod promoted on one side fork group motion, the fork group of another side was synchronized with the movement.
Described crank connecting rod mechanism is fixed on the solid plate and moving platen of thermoforming machine by two fork bearings up and down, upper pendulum bar is connected with the upper pendulum bar bearing by cylindrical roller, draft link is connected with the draft link bearing by cylindrical roller, upper pendulum bar is connected with draft link by cylindrical roller, makes to decide dynamic model and crank connecting rod mechanism fuses.
Described push rod is connected with crank connecting rod mechanism by cylindrical roller, when servo-actuating device driving push rod swings, crank connecting rod mechanism swings, the moving platen of thermoforming machine is under the guiding of guide pillar, move up and down, realize the action of folding mould, the Stroke Control of folding mould dynamic model of deciding of mould behind matched moulds has small strain, utilizes strain to produce reinforcement effect.
Patent of the present invention is a kind of clasp mould mechanism of brand-new type of drive, and the driven by servomotor cam link mechanism is realized mould assembling action, and it has the advantage of electrodynamic type clasp mould mechanism, but servomotor continuous motion simultaneously, and efficient height, life-span are long.
Description of drawings
Below in conjunction with accompanying drawing the present invention is described in detail.
Fig. 1 is the structure matched moulds schematic diagram of patent preferred embodiment of the present invention.
Fig. 2 is the structure die sinking schematic diagram of patent preferred embodiment of the present invention.
Fig. 3 is that the A-A of Fig. 1 is to cutaway view.
Fig. 4 is that the B-B of Fig. 1 is to cutaway view.
Fig. 5 is cam contour figure.
Wherein 1. solid plates among the figure, 2. supporting base, 3. cam, 4. slider guide, 5. key, 6. bolt, 7. gear shaft, 8. cylindrical roller, 9. push rod, 10. cylindrical roller on guide pillar, the 11. upper pendulum bar bearings, 12., 13. upper pendulum bars, 14. connecting rod cylindrical rollers, 15. connecting rods, 16. push rod cylindrical rollers, 17. draft links, 18. times cylindrical rollers, 19. draft link bearings, 20. bolts, 21. moving platens, 22. gears, 23. rolling bearings, 24. keys.
The specific embodiment
Shown in Fig. 1-4, the cam mechanism in this preferred embodiment comprises compositions such as supporting base 2, cam 3, slider guide 4, key 5, bolt 6, gear shaft 7, cylindrical roller 8, push rod 9, gear 22, rolling bearing 23 and key 24.
Gear shaft 7 is fixed on the supporting base 2 by cylindrical roller 8, is fixed on the solid plate 1 of thermoforming machine by bolt (not drawing among the figure) on the supporting base 2, thereby cam mechanism is installed on the thermoforming machine.Driven by servomotor decelerator (not drawing among the figure), by gear 22,7 rotations of key 24 driven gear axles, the front end of gear shaft 7 is connected with slider guide 4 by key 5, drive slider guide 4 rotations, cylindrical roller 8 is arranged in the slider guide 4, cylindrical roller 8 is made up of three parts, its middle part contacts with slider guide 4, can be along the guide groove movement of slider guide 4, one end contacts with cam 3, can move along cam 3 cam locus, and the other end of cylindrical roller 8 is connected with push rod 9, promote push rod 9 motions, cam 3 is fixed on the supporting base 2 by bolt 6, and when gear shaft 7 rotated continuously, cylindrical roller 8 rotated around gear shaft 7 under the guiding of slider guide 4 on the one hand, move along cam 3 cam locus on the one hand, realize the reciprocally swinging of push rod 9,, realize simultaneously rotatablely moving continuously of servomotor is converted to reciprocally swinging intermittently for the reciprocating motion of crank connecting rod mechanism provides power.
Crank connecting rod mechanism in this preferred embodiment comprises upper pendulum bar bearing 11, upper pendulum bar 13, last cylindrical roller 12, connecting rod 15 and connecting rod cylindrical roller 14, draft link bearing 19, draft link 17, compositions such as following cylindrical roller 18, push rod cylindrical roller 16 and bolt 20.
The upper pendulum bar bearing 11 of crank connecting rod mechanism and draft link bearing 19 are separately fixed on the solid plate 1 and moving platen 21 of thermoforming machine by bolt 20, upper pendulum bar 13 is connected with upper pendulum bar bearing 11 by last cylindrical roller 12, the hinge that formation can swing, draft link 17 passes through down, and cylindrical roller 18 is connected with lower link swing seat 19, the hinge that formation can swing, the two ends of connecting rod 15 connect into slide hinge by connecting rod cylindrical roller 14, two crank connecting rods are coupled together, when one crank connecting rod is swung, swing when realizing another crank connecting rod, to increase mold clamping force and stationarity, one end of push rod 9 connects into slide hinge by connecting rod cylindrical roller 16 and upper pendulum bar 13, and the other end connects into slide hinge by cylindrical roller 8.Drive the reciprocally swinging of push rod 9 by cam mechanism, promoting upper pendulum bar 13 swings around the hinge of last swing, draft link 17 swings around the hinge of lower swing, upper pendulum bar 13 is by connecting rod cylindrical roller 14 simultaneously, promote connecting rod 15, swing when realizing another crank connecting rod, because draft link bearing 19 is connected with moving platen 21, moving platen 21 is under the effect of guide pillar 10, can only move up and down, so the folding mould that can realize thermoforming machine by swinging of fork moves, when matched moulds arrives near terminal, can utilize the deformation behavior of crank connecting rod mechanism simultaneously, reach the function of reinforcement, Fig. 1 is the schematic diagram of matched moulds state, and Fig. 2 is the schematic diagram of die opening state.
Fig. 5 is cam contour figure, and the curve of this cam mainly is made up of 5 sections circular arcs, and wherein the CD section is the ascent stage, makes the right side pendulum of push rod 9, realizes mould assembling action; The DF section is a descending branch, makes the left side pendulum of push rod 9, realizes the die sinking action, and the AB section is a stop segment, makes the motionless of push rod 9, and clasp mould mechanism rests motionless, so that the moulding of thermoforming machine; BC section and FA section are the transition circle segmental arc, realize the smooth transition of motion converter.
The above only is the preferred embodiment of patent of the present invention, is not the practical range that is used for limiting patent of the present invention; Be all equivalents of being done according to claim scope of the present invention, be claim scope of the present invention and cover.

Claims (8)

1. thermoforming machine clamping; it is characterized in that: comprise cam mechanism and crank connecting rod mechanism; cam mechanism comprises servo-drive, supporting device and camming movement mechanism, and described thermoforming machine clamping comprises at least one servo-drive and two supporting devices, camming movement mechanism.
2. thermoforming machine clamping as claimed in claim 1; it is characterized in that: described servo-drive is rotated by the gear on the servomotor driven gear axle; gear is fixed on gear shaft by key; gear shaft is fixed on the supporting device by rolling bearing, and servo-drive provides power for clasp mould mechanism.
3. thermoforming machine clamping as claimed in claim 1; it is characterized in that: described supporting device by two supporting bases by on the solid plate that is bolted to thermoforming machine; supporting base drives by two rolling bearing supporting servos; the cam of camming movement mechanism is crossed and is bolted on the supporting base, and supporting device plays supporting servo and drives and camming movement mechanism.
4. thermoforming machine clamping as claimed in claim 1; it is characterized in that: the cam of described camming movement mechanism is crossed and is bolted on the supporting base; play motion track guiding; the slider guide of camming movement mechanism is fixed on the gear shaft by key; when gear shaft rotates; slider guide rotates together, and a cylindrical roller is arranged in the slider guide, and the rotation of slider guide drives the guide groove movement of cylindrical roller rotation one side along slider guide on the one hand.
5. thermoforming machine clamping as claimed in claim 4; it is characterized in that: cylindrical roller is made up of three parts; its middle part is connected with slider guide; can be along the guide groove movement of slider guide; one end is connected with cam; can move along the cam locus of cam; the other end of cylindrical roller is connected with push rod; promote pushrod movement, when gear shaft rotated continuously, cylindrical roller rotated around gear shaft under the guiding of slider guide on the one hand; move along cam locus on the one hand; realize the reciprocally swinging of push rod,, realize simultaneously rotatablely moving continuously of servomotor is converted to reciprocally swinging intermittently for the reciprocating motion of crank connecting rod mechanism provides power.
6. thermoforming machine clamping as claimed in claim 1; it is characterized in that: the number of described crank connecting rod mechanism is two; each crank connecting rod mechanism by about two fork groups form; two fork groups link together with connecting rod and cylindrical roller; when push rod promoted the fork group motion on one side, the fork group of another side was synchronized with the movement.
7. thermoforming machine clamping as claimed in claim 6; it is characterized in that: described crank connecting rod mechanism is fixed on the solid plate and moving platen of thermoforming machine by two fork bearings up and down; upper pendulum bar is connected with the upper pendulum bar bearing by cylindrical roller; draft link is connected with the draft link bearing by cylindrical roller; upper pendulum bar is connected with draft link by cylindrical roller, makes to decide dynamic model and crank connecting rod mechanism fuses.
8. as claim 6 and 7 described thermoforming machine clampings; it is characterized in that: push rod is connected with crank connecting rod mechanism by cylindrical roller; when servo-actuating device driving push rod swings; crank connecting rod mechanism swings; the moving platen of thermoforming machine moves up and down under the guiding of guide pillar, realizes the action of folding mould; the Stroke Control of folding mould dynamic model of deciding of mould behind matched moulds has small strain, utilizes strain to produce reinforcement effect.
CN2011101296748A 2011-05-19 2011-05-19 Die opening/closing mechanism of thermoforming machine Pending CN102211404A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2011101296748A CN102211404A (en) 2011-05-19 2011-05-19 Die opening/closing mechanism of thermoforming machine

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Application Number Priority Date Filing Date Title
CN2011101296748A CN102211404A (en) 2011-05-19 2011-05-19 Die opening/closing mechanism of thermoforming machine

Publications (1)

Publication Number Publication Date
CN102211404A true CN102211404A (en) 2011-10-12

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108747133A (en) * 2018-07-27 2018-11-06 常州机电职业技术学院 A kind of welding gun swinging device
WO2022088580A1 (en) * 2020-10-30 2022-05-05 上海爵诺科技有限公司 High-speed cantilever-type mold opening and closing transmission mechanism

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3816052A (en) * 1972-07-17 1974-06-11 Package Machinery Co Operating apparatus for the platens in a thermoforming machine
US4509909A (en) * 1983-04-14 1985-04-09 Leesona Corporation Clamp mechanism for differential pressure thermoformer
CN201231552Y (en) * 2008-05-22 2009-05-06 汕头市明发机械有限公司 Transmission mechanism of plastic sheet forming machine mould
CN201693700U (en) * 2010-06-23 2011-01-05 上海展宏机械有限公司 Opening and closing mechanism of forming die of plastic forming machine

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3816052A (en) * 1972-07-17 1974-06-11 Package Machinery Co Operating apparatus for the platens in a thermoforming machine
US4509909A (en) * 1983-04-14 1985-04-09 Leesona Corporation Clamp mechanism for differential pressure thermoformer
CN201231552Y (en) * 2008-05-22 2009-05-06 汕头市明发机械有限公司 Transmission mechanism of plastic sheet forming machine mould
CN201693700U (en) * 2010-06-23 2011-01-05 上海展宏机械有限公司 Opening and closing mechanism of forming die of plastic forming machine

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108747133A (en) * 2018-07-27 2018-11-06 常州机电职业技术学院 A kind of welding gun swinging device
WO2022088580A1 (en) * 2020-10-30 2022-05-05 上海爵诺科技有限公司 High-speed cantilever-type mold opening and closing transmission mechanism

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Application publication date: 20111012