Device for closing unit

Abstract

The invention relates to a device for closing a unit, comprising at least: a tool clamping plate (1) which can be moved in a movement direction; a frame (2) for supporting an injection unit (3), which frame is connected to a movable tool clamping plate (1) and can be moved together with the movable tool clamping plate, wherein the frame (2) is connected in an articulated manner to the movable tool clamping plate (1) via at least one articulated connection device (4) and is supported on the movable tool clamping plate (1) via at least one supporting device (5), a closing unit having such a device and an injection molding machine having such a closing unit.

Description

Technical Field

[0001] This disclosure relates to an apparatus for a shut-off unit of an injection molding machine, a shut-off unit having such an apparatus, and an injection molding machine having such a shut-off unit. Background Technology

[0002] It is known in the prior art that the frame is rigidly connected to a movable tool clamping plate. This causes the frame to absorb the torque during metering of the melt to be injected and the torque caused by the closing force (e.g., by plate tilting, plate overturning, or plate bending), and it must be correspondingly solidly constructed. Due to the acting torque, eccentric positioning of the nozzle of the injection unit may occur. Summary of the Invention

[0003] The aim is to improve the device for the injection molding machine, the shut-off unit having such a device, and the injection molding machine having such a shut-off unit, so that the problem no longer occurs or at least occurs to a reduced extent.

[0004] The objective is achieved by a device having the features of claim 1, a shut-off unit having such a device, and an injection molding machine having such a shut-off unit.

[0005] In such a device, at least a tool clamping plate movable along the direction of movement and a frame for supporting the injection unit are provided. The frame is connected to the movable tool clamping plate and can move together with the movable tool clamping plate. The frame is hinged to the movable tool clamping plate via at least one hinged connection device and supported on the movable tool clamping plate via at least one support device.

[0006] Due to at least one hinged connection, the frame is at least substantially decoupled from the plate bending portion, plate tilting portion, or plate overturning portion. The torque that occurs during metering can be supported on a movable tool clamping plate by at least one support device. Overall, it is feasible to implement the frame in a less rigid and solid manner, while maintaining the desired centered orientation of the nozzle. The guide portion for the frame, which can be supported on an auxiliary frame, can also be configured in a less solid manner.

[0007] Advantageous embodiments are defined in the dependent claims.

[0008] For plasticizing, the injection unit may have a plasticizing screw that is rotatably and movable.

[0009] Preferably, the frame is supported on a movable tool clamping plate on both sides of at least one hinged connection device via at least one support device, which allows for symmetrical support.

[0010] Preferably, at least one hinged connection device is arranged along the vertical centerline of the tool clamping plate.

[0011] Preferably, at least one hinged connection device and at least one support device are positioned at at least substantially the same height relative to the movable tool clamping plate.

[0012] Preferably, at least one hinged connection has a horizontal pivot axis, and at least one support allows movement in the horizontal line. Thus, compared to a rigid connection, less torque due to plate tilting or overturning is transmitted to the frame and guide unit during the connection. In a rigid connection, torque transmitted to the frame due to plate bending is not transmitted to the frame through at least one hinged connection and not through the horizontal degree of freedom of at least one support. Measuring torque is absorbed in the vertical line by at least one support.

[0013] For example, at least one hinged connection device may be configured as a journal hinge mechanism with a horizontal hinge axis, wherein the hinge eye is provided at the movable tool clamping plate, and at least one hinge pin is connected to the frame, or vice versa.

[0014] Preferably, at least one support device is configured such that the support device allows movement in the direction of movement.

[0015] Exemplarily, at least one support device may be configured as a substantially U-shaped receiving portion connected to a movable tool clamping plate, wherein the open end of the U-shape is in a horizontal line, and at least one support device may be configured as a horizontally placed rod connected to a frame, which may be supported in the U-shape, or vice versa. Alternatively, a chute guide device is feasible, which may be in the form of an elongated hole formed in a block or in the form of blocks arranged at heights relative to each other. Alternatively, it may be proposed that the support device has only a single block that, taking into account the rotation direction of the plasticizing screw of the injection unit, intercepts the force due to torque. Attached Figure Description

[0016] The implementation methods will be discussed with reference to the accompanying drawings.

[0017] Figure 1 The closed unit is shown in a side view.

[0018] Figure 2 Shown in top view Figure 1 The closing unit is shown in the figure.

[0019] Figure 3 Shown in a stereoscopic view Figure 1 and Figure 2 Details of the closed unit are shown in the image.

[0020] Figure 4Showing something similar to Figure 4 Details before assembly.

[0021] Figure 5 Showing something similar to Figure 3 and Figure 4 Details before assembly.

[0022] Figures 6A to 6D and Figure 7 Other implementations are shown. Detailed Implementation

[0023] Figure 1 and Figure 2 An injection molding machine with a closing unit is shown. The closing unit includes: a fixed tool clamping plate 6, a device, and an injection unit 3 disposed at a frame 2. The device has a tool clamping plate 1 movable along the direction of movement X, and a frame 2 for supporting the injection unit 3. The frame is connected to the movable tool clamping plate 1 and can move together with the movable tool clamping plate. The two tool clamping plates 1 and 6 are guided on a machine frame 8, and the frame 2 is guided on an auxiliary frame 7.

[0024] The frame 2 is supported on the movable tool clamping plate 1 on both sides of the hinged connection device 4 via a support device 5, wherein the hinged connection device 4 and the support device 5 are at least substantially at the same height relative to the movable tool clamping plate 1.

[0025] In the illustrated embodiment, the hinged connection device 4 has a horizontal pivot axis, and the support device 5 allows movement in the horizontal line.

[0026] like Figures 3 to 5 As can be seen from the detailed view, the hinge connection device 4 is constructed in the form of a journal hinge mechanism with a horizontal hinge axis, wherein the hinge pin is provided at the movable tool clamping plate 1, and the hinge eye is connected to the frame 2.

[0027] The two support devices 5 are configured as substantially U-shaped receptacles connected here to the movable tool clamping plate 1, wherein the open ends of the U-shape are in the horizontal line, and the support devices 5 are configured as horizontally placed rods connected to the frame 2, the rods being supported in the U-shape.

[0028] In the following more precise implementation, reference is made to the following coordinate system, wherein:

[0029] - The z-axis is oriented along the vertical line.

[0030] - The x-axis is oriented along the direction of movement.

[0031] The y-axis is orthogonal to the x-axis and z-axis.

[0032] At least one hinged connection device is configured such that, with respect to frame 2

[0033] - Allows movement along the y-axis.

[0034] -Prevents movement along the x-axis and z-axis.

[0035] - Allows for torque M on all three axes X, Y, Z X M Y M Z .

[0036] These two supporting devices are configured such that, regarding frame 2

[0037] -Prevent z-axis movement

[0038] - Allows movement along the x-axis and y-axis.

[0039] -Prevent torque M about the x-axis X ,

[0040] - Allows for torque M on both the y and z axes Y M Z .

[0041] If, for example, in Figure 4 When metering is performed clockwise in a view showing the injection unit 3 (after assembly), the resulting metering torque causes a downward force to be applied to the support device 5 on the left side of the view, and an upward force to be applied to the support device 5 on the right side of the view.

[0042] exist Figure 6A The diagram shows a configuration of a support device 5 consisting of two blocks stacked vertically in a straight line, with the blocks forming a groove between themselves.

[0043] exist Figure 6B The diagram shows an alternative configuration for the support device 5 with a groove.

[0044] Figure 6C and Figure 6D The following configuration of the support device 5 is shown for different rotation directions of the plasticizing screw of the injection unit 3, wherein the support device 5 has only one block, which is configured such that, taking into account the rotation direction of the plasticizing screw of the injection unit 3, the block intercepts the force caused by torque.

[0045] exist Figure 7 In one embodiment, a portion of the support device 5 and at least one hinged connection device 4 are integrally formed with the movable tool clamping plate 1, for example, by a casting method.

[0046] List of reference numerals

[0047] 1 Movable tool clamping plate

[0048] 2 Framework

[0049] 3 Injection Units

[0050] 4. Hinged connection device

[0051] 5. Supporting equipment

[0052] 6. Fixed tool clamping plate

[0053] 7. Auxiliary Framework

[0054] 8. Machine Frame

[0055] X x-axis

[0056] Y-axis

[0057] Z z-axis

[0058] M X Torque around the x-axis

[0059] M Y Torque around the y-axis

[0060] M Z Torque around the z-axis

Claims

1. Device for closing a unit, having at least: - a tool clamping plate (1) movable along a movement direction, - a frame (2) for supporting an injection unit (3), which frame is connected to and movable together with the movable tool clamping plate (1), characterized in that the frame (2) is hingedly connected to the movable tool clamping plate (1) via at least one hinged connection device (4) and is supported on the movable tool clamping plate (1) via at least one support device (5).

2. Device according to the preceding claim, wherein the frame (2) is supported on the movable tool clamping plate (1) via at least one support device (5) on both sides of the at least one hinged connection device (4).

3. Device according to either of the two preceding claims, wherein the at least one hinged connection device (4) and the at least one support device (5) are arranged at least substantially at the same height relative to the movable tool clamping plate (1).

4. Device according to at least one of the preceding claims, wherein a vertical support is provided for the frame (2).

5. Device according to at least one of the preceding claims, wherein the at least one hinged connection device (4) is formed in the form of a journal hinge having a horizontal hinge axis, wherein at least one hinge pin is arranged at the movable tool clamping plate (1) and a hinge eye is connected to the frame (2), or vice versa.

6. Device according to at least one of the preceding claims, wherein the at least one support device (5) is formed such that it allows movement in the movement direction.

7. Device according to the preceding claim, wherein at least one support device (5) is formed as a substantially U-shaped receptacle connected to the movable tool clamping plate (1), wherein the open end of the U is in a horizontal line, and at least one support device (5) is formed as a horizontally lying bar connected to the frame (2), which bar can be supported in the U, or vice versa.

8. Device according to at least one of the preceding claims, wherein the at least one hinged connection device (4) has a horizontal pivot axis, and the at least one support device (5) allows movement in a horizontal line.

9. Device according to the preceding claim, wherein in a coordinate system, in which: - the z-axis is oriented along a vertical line, - the x-axis is oriented along the movement direction, - the y-axis is oriented orthogonally to the x-axis and the z-axis, the at least one hinged connection device is formed such that with respect to the frame (2) - y-axis movement is allowed, - x-axis movement and z-axis movement are prevented, - allows torques (M X , M Y , M Z ) about all three axes (X, Y, Z).

10. Device according to either of the two preceding claims, wherein in a coordinate system, in which: - the z-axis is oriented along a vertical line, - the x-axis is oriented along the movement direction, - the y-axis is oriented orthogonally to the x-axis and the z-axis, the at least one support device is formed such that with respect to the frame (2) - z-axis movement is prevented, - allowing x-axis movement and y-axis movement, - prevent the torque (M X ), - allows torques (M Y , M Z ) about the y and z axes.

11. Closing unit for an injection molding machine, the closing unit having: - a stationary tool clamping plate (1), - a device according to at least one of the preceding claims, - an injection unit (3) arranged at the frame (2).

12. Injection molding machine having a closing unit according to the preceding claim.

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