阅读说明：本技术 用于注塑成型机的合模单元和用于锁定力传递元件的方法 (Clamping unit for an injection molding machine and method for locking a force transmission element ) 是由 埃伯哈德·迪夫内 赖纳·布利特舍尔 于 2018-12-20 设计创作，主要内容包括：一种用于加工塑料的注塑成型机的合模单元具有可相对于固定模具支架(10)移动的模具支架。提供了模具移动装置,以使可移动模具支架移入或移出注塑模具的闭合。至少一个力传递元件连接到可移动模具支架并在其远离可移动模具支架的端部具有部分(14a),该部分被分配给固定模具支架(10)并可被致动以用于操作接合。固定模具支架(10)被分配有锁定装置(15),该锁定装置可移动到与可致动部分(14a)形成互锁操作连接以在注塑模具的闭合期间施加闭合力。根据该方法,这些元件用于产生将力传递元件锁定到注塑成型机的模具支架的方法。锁定装置(15)具有浮动夹持钳爪(16),在模具的闭合期间该浮动夹持钳爪可移动到与可致动部分(14a)形成互锁操作连接以锁定力传递元件和固定模具支架(10)并同时连接到活塞-气缸单元(17)的至少一个活塞(18)以用于施加闭合力,这意味着形成了合模单元,在该合模单元中,用于将拉杆锁定在模具支架的锁定机构与用于施加闭合力的单元集成在一个公共单元中。(A clamping unit of an injection molding machine for processing plastic has a mold carrier which is movable relative to a stationary mold carrier (10). Mold moving means are provided to move the movable mold support into and out of the closure of the injection mold. At least one force transmission element is connected to the movable mould holder and has, at its end remote from the movable mould holder, a portion (14a) which is assigned to the stationary mould holder (10) and which can be actuated for operative engagement. The stationary mold support (10) is assigned a locking device (15) which is movable into interlocking operative connection with the actuatable portion (14a) to exert a closing force during closing of the injection mold. According to the method, these elements are used to create a method of locking a force transmitting element to a mold carrier of an injection molding machine. The locking device (15) has a floating gripper jaw (16) which can be moved during closing of the mould into interlocking operative connection with the actuatable part (14a) for locking the force transmission element and the stationary mould holder (10) and at the same time to at least one piston (18) of a piston-cylinder unit (17) for applying the closing force, which means that a clamping unit is formed in which a locking mechanism for locking the tie rod to the mould holder is integrated in one common unit with the unit for applying the closing force.)

1. A clamping unit for an injection molding machine for processing plastic and other moldable materials, comprising:

-a stationary platen (10),

-a movable platen (11, 11') movable relative to the stationary platen (10), the movable platen forming a mold clamping space (R) between the movable platen and the stationary platen (10) for receiving an injection mold (M) and the platen being movable in a closing direction (s-s) for closing and opening the injection mold (M),

-mould moving means (13, 13') for moving said movable platen (11, 11') into and out of clamping of parts of an injection mould (M) received between the platens (10, 11; 11'),

-at least one force transmission element connected to one of the plurality of pressure plates (11, 11 '; 10) and having, at its end spaced apart from one of the plurality of pressure plates (11, 11 '; 10), an actuatable portion (14a) associated with the other of the plurality of pressure plates (10; 11, 11') and actuatable for operative engagement,

-at least one locking device (15) associated with said further platen (10; 11, 11') and movable into forced operative connection with said actuatable portion (14a) for applying a closing force when said part of said injection mold (M) is in a molding position,

characterized in that the locking device (15) comprises at least one floating collet chuck (16, 116) which, during clamping, can be moved into positive operative connection with the actuatable portion (14a) for locking the force transmission element and the further pressure plate (10; 11, 11'), and which at the same time is connected to at least one piston (18, 118) of a piston-cylinder unit (17) for applying a closing force.

2. Clamping unit according to claim 1, characterized in that the collet chuck (16, 116) and the piston (18, 118) are parts of a self-contained assembly.

3. Clamping unit according to claim 1 or 2, characterized in that the collet chuck (16, 116) can be positively locked to the force transmission element and in the locked state the piston (18, 118) is configured to generate a high pressure for generating the closing force.

4. Clamping unit according to one of the preceding claims, characterized in that the piston (18, 118) for applying the closing force can be actuated counter to the force of an elastic element (spring 24, 124, 161).

5. Clamping unit according to one of the preceding claims, characterized in that the locking device (15) comprises at least one unlocking element (55) which is arranged in the collet chuck and which, in a locked position, comprises a thrust piece (39) which forms a positive-action connection at the end of the unlocking element and which is configured to cause a radial elastic deformation of the collet chuck when it abuts against the collet chuck (16).

6. Clamping unit according to claim 5, characterized in that the unlocking element (55, 155) is guided on the cylinder head (25, 125) in a sliding sleeve (35) or in an integrally formed element (125a) designed as a bracket in a manner movable relative to the cylinder head (25, 125).

7. Clamping unit according to one of the preceding claims, characterized in that in the radially elastically deformed open state the collet chuck (16), which is mounted such that it can be moved axially on the platen by means of a cylinder (19) for the piston (18), comprises a receiving opening for the introduction of a part (14a) of a force transmission element which can be actuated by the collet chuck (fig. 3, 4).

8. Clamping unit according to claim 7, characterized in that, in the positively closing condition, in the radially undeformed state, the collet chuck (16) engages in an engagement section of the actuatable portion (14a) via an engagement section (16 a).

9. Clamping unit according to one of claims 5 to 8, characterized in that a sliding sleeve (20) is provided which is radially attached to an unlocking lever (55) in the form of an unlocking element and in that, in the radially undeformed state of the collet chuck (16), it abuts an abutment region (33) of the collet chuck (16) for fixing the collet chuck against radial opening.

10. Clamping unit according to one of claims 5 to 9, characterized in that the locking device (15) comprises a cylinder chamber (48, 148) which is configured to put the unlocking element (55, 155) under load for opening the collet chuck (16, 116) and that a high-pressure opening of the injection mold (M) is configured to take place from the cylinder chamber (48, 148) when the unlocking element (55, 155) abuts a tie rod (14) by means of an end face thereof.

11. Clamping unit according to one of claims 1 to 6 or 10, characterized in that the collet chuck (16), which is mounted such that it can be moved axially on the platen by means of a cylinder (19) for the piston (18), comprises a receiving opening for introducing a part (14a) of the force transmission element which can be actuated by the collet chuck (16) in a radially undeformed open state (fig. 6a, 6 b).

12. Clamping unit according to claim 11, characterized in that the engagement section (16a) of the collet chuck (16) engages in the engagement section of the actuatable portion (14a) in the radially elastically deformed state in the passively closed condition.

13. Clamping unit according to claim 12, characterized in that the collet chuck (16) is configured to be fixed by a further piston (18') acting on an end face of the collet chuck in the radially elastically deformed state.

14. Clamping unit according to one of the preceding claims, characterized in that a tie rod (14) is provided on the end face of the unlocking lever (55) and/or in the bore (10a) of the pressure plate, which tie rod is configured to be received as a force transmission element, the lubricant supply device having at least one element comprising a lubricant feed (50), a reservoir (51), a lubricant discharge point (52), a lubricant supply line (54) and a lubricant plate (55 a).

15. Clamping unit according to one of claims 1 to 6, 10, 14, characterized in that the collet chuck (116) is in the form of a plurality of parts and comprises a clamping element mounted to rotate transversely to the closing direction (s-s), wherein the clamping element is mounted on a mounting element (115) and is configured to be operatively engaged and disengaged with the force transmission element by means of an actuating element (160) (fig. 10-14) connected to an unlocking element (155) or by means of a sliding sleeve (170) (fig. 15-18).

16. Clamping unit according to one of the preceding claims, characterized in that the at least one force transmission element is formed by a plurality of tie rods (14) which are movable together with the movable platen (11, 11') and empty the mold clamping space (R) when the injection mold (M) is opened.

17. A method of locking a force-transmitting element to a platen of an injection molding machine for processing plastic and other moldable materials, wherein the injection molding machine comprises:

-a stationary platen (10),

-a movable platen (11, 11') movable relative to the stationary platen (10), the movable platen forming a mold clamping space (R) between the movable platen and the stationary platen (10) for receiving an injection mold (M), and the movable platen being movable in a closing direction (s-s) for closing and opening the injection mold (M),

-mould moving means (13, 13') for moving said movable platen (11, 11') to and from a clamping position for a part of an injection mould (M) received between the plurality of platens (10, 11; 11'),

-at least one force transmission element connected to one of the plurality of pressure plates (11, 11 '; 10) and comprising, at an end thereof spaced apart from one of the plurality of pressure plates (11, 11 '; 10), an actuatable portion (14a) associated with another of the plurality of pressure plates (10; 11, 11') and actuatable for operative engagement,

wherein the actuatable portion (14a) is positively locked by means of at least one locking device (15) when the part of the injection mold (M) is in the mold-closing position by means of the further platen (10; 11, 11'), and in this locked state a closing force acting through the force transmission element is applied,

characterized in that the force transmission element is mounted in a floating manner on the further pressure plate (10; 11, 11') by means of at least one spring clip (16, 116) which is connected at the same time in the locking device (15) to a piston (18, 118) of a piston-cylinder unit (17), which piston exerts the closing force.

18. Method according to claim 17, characterized in that the collet chuck (16, 116) is positively locked to the force transmission element and in the locked state a high pressure is generated by the piston (18, 118) for generating the closing force.

19. Method according to claim 17 or 18, characterized in that the collet chuck (16) is radially elastically deformed by means of a thrust piece (39) arranged on at least one unlocking element (55) arranged centrally with respect to the collet chuck.

20. Method according to one of claims 17 to 19, characterized in that the piston (18) is moved by means of the collet chuck (16) together with at least one sliding sleeve (35) on an unlocking lever (55) which is arranged centrally in the collet chuck (16) and takes the form of an unlocking element.

21. Method according to claim 19 or 20, characterized in that the unlocking element (55, 155) is guided movably relative to the cylinder head (25, 125) of the cylinder (19, 119) of the piston (18, 118) in a sliding sleeve (35) in the form of a bracket or in an integrally formed element (125a) in the form of a bracket.

22. The method according to one of the claims 17 to 21,

in a radially elastically deformed open state, the collet chuck (16), which is mounted axially movably on the pressure plate, comprises a receiving opening into which the actuatable portion (14a), which can be actuated by the collet chuck (16), is introduced,

the radial deformation of the collet chuck (16) is then reversed, so that the collet chuck (16) is connected to the force transmission element by positive closure and detachably by positive engagement (fig. 3, 4).

23. Method according to one of claims 17 to 21, characterized in that in a radially undeformed open state the collet chuck (16) mounted axially movably on the pressure plate comprises a receiving opening into which the actuatable portion (14a) actuatable by the collet chuck (16) is introduced,

the collet chuck (16) is then elastically deformed radially inwards, whereby the collet chuck (16) is connected to the force transmitting element by passive closing and detachably by positive engagement (fig. 6a, 6 b).

24. Method according to one of claims 17 to 21, characterized in that the collet chuck (116) takes the form of a plurality of parts and comprises a clamping element mounted to rotate transversely to the closing direction (s-s), wherein the clamping element is mounted on a mounting element (115) and is operatively engaged and disengaged with the force transmission element by means of an actuating element (160) (fig. 10-14) connected to an unlocking element (155) or by means of a sliding sleeve (170) (fig. 15-18).

25. Method according to one of claims 17 to 24, characterized in that at least one unlocking element (55, 155) is placed under load from a cylinder chamber (48, 148) for opening the collet chuck (16, 116), and that the injection mold (M) opens at high pressure from the cylinder chamber (48, 148) when the unlocking element (55) abuts a tie rod (14) in the form of a force transmission element by means of an end face of the unlocking element.