CN220333032U - Barrier device - Google Patents

Abstract

The present utility model provides a blocking device adapted to be mounted on a wrapping and packaging machine for wrapping objects with a wrapping film, in particular, on a wrapping and packaging machine for wrapping a pallet, comprising a blocking rod member for supporting and receiving a portion of the film and a supporting unit of the blocking rod member; the blocking lever element is movable on the support unit from a rest position to an extended operating position in which it extends transversely of the support unit for performing a heat-sealing operation on the film at the end of the packaging of the tray; the blocking device further comprises a support structure supporting the unit and a moving device moving the blocking lever element in a moving direction from a maximum extended position to a maximum retracted position with respect to the tray; the first movement means comprises a lever means and a first actuator connected to each other, arranged to operate the lever means and configured to exert a pulling and pushing action on the lever means along an operating direction arranged transversely with respect to the movement direction.

Description

blocking device

Technical field

The utility model relates to a blocking device for heat sealing of packaging films, which is intended to be installed on a winding packaging machine, especially a winding packaging machine for packaging trays.

Background technique

It is known to use pallets to store and transport goods.

Furthermore, it is also known to use a pallet wrapper to wrap the pallet and the goods placed thereon with stretch film, which stabilizes the pallet and the goods as a whole, making transportation and/or storage easier to manage.

Specifically, automatic winding machines are usually used in automated production lines, placed at the end of the production line to automatically package goods, and cut the edge of the film at the end of packaging, the so-called film tail, and then weld or fix it to the underlying film of the goods layer.

The welding of the film edges, and more precisely the heat sealing of the film edges, can be carried out in direct contact with the packaged goods (in this case, the heat sealing element in the wrapping machine can be pressed directly against the film-packed goods) , or use a retractable barrier bar that is placed between the last layer of film applied to the goods and the last wrap or turns of film: in other words, the last wrapped wrap of film rests against the barrier bar. In this way, the heat sealing element can be pressed against the retractable barrier rod, interacting only with the film layers that are also wrapped around the barrier rod, i.e. only with the layers of film required for effective welding. The second option is particularly advantageous, for example, when the surface of the goods is too irregular to allow direct contact welding, or when it is necessary to avoid any contact with the products on the pallet in order to ensure that the goods are not damaged.

Specifically, when there is a blocking lever, the blocking lever is equipped with a blocking device that manages the engagement and disengagement of the blocking lever; however, current blocking devices often have complex movement characteristics, which results in large sizes that compromise the blocking Effectiveness and ease of use of the device.

Furthermore, where the shape and/or condition of the cargo prevents barrier bar removal, disengagement of the barrier bar may be complicated, thereby reducing the versatility of the pallet wrapper itself.

Therefore, it is desirable to improve the current blocking devices used for packaging films and thereby improve the current automatic pallet winding machines to ensure high versatility, small size and simple movement characteristics.

Utility model content

One purpose of this utility model is to provide a blocking device with strong versatility.

Another object of the present invention is to provide a small-sized blocking device.

Another object of the present invention is to provide a blocking device whose components can move according to simplified movement characteristics.

In order to achieve the above purpose, the present utility model provides a blocking device, which is suitable for being installed on a wrapping machine for packaging trays packaged with packaging film, and includes:

- a blocking rod element adapted to support and receive a portion of the packaging film,

- support unit for blocking rod elements,

The blocking rod element is movable from a rest position on the support unit in order to be detached from the packaging film in an extended operating position in which the support unit laterally extends for supporting and receiving the packaging film and allowing the packaging film to be placed on the pallet At the end of packaging, a heat sealing operation is performed on the packaging film, and the blocking device also includes:

- the support structure supporting the unit, and

- moving means configured to move the support unit along the direction of movement relative to the support structure in order to move the blocking bar element from a maximum extended position of the pallet to a maximum retracted position relative to the pallet,

The mobile device includes an interconnected lever device having a free end connected to the support unit and a fixed end connected to the support structure, the mobile device further including a first driver arranged to operate the lever device and connected at a first end to the support structure , connected at the second end to the lever device, wherein the first driver is configured to exert pulling and pushing effects on the lever device in an operating direction arranged transversely with respect to the direction of movement.

Preferably, the support unit is connected to a track device adapted to slide within a slider device arranged on the support structure to guide the support unit to move in the direction of movement so that the blocking rod element is close to or away from the pallet, and the support unit is slidable along the direction of movement. , moves from the maximum extended position of the pallet to the maximum retracted position relative to the pallet.

Preferably, the track device has a stop device to stop the sliding of the track device within the slider device when the support unit reaches the maximum extended position.

Preferably, the lever device and the first drive extend substantially on the same horizontal plane and are movable in order to move the support unit from the maximum extended position to the maximum retracted position, the lever device and the first drive being oriented in the maximum retracted position, This minimizes the overall dimensions parallel to the direction of movement.

Preferably, the blocking rod element is configured to rotate about an axis parallel to the direction of movement, along the first direction of rotation or the second direction of rotation, from the extended operating position to the rest position, so as to rotate substantially along the axis at the end of the heat sealing operation. Move in the same direction as the forward direction of the pallet.

Preferably, the support unit has a box-like housing in which a rack is placed and connected to the blocking lever element through a gear to allow the blocking lever element to move from a retracted rest position to an extended operating position.

Preferably, the blocking means comprise a second drive arranged to linearly move the rack, the blocking lever element being removable relative to the gear to change its position relative to the rack, modifying the movement from an extended operating position to a retracted rest position , the blocking rod element can be configured to move on the support unit to a folded rest position, or to a deployed rest position in which the blocking rod element extends as an elongated end of the support unit.

Preferably, the support structure is connected to a third drive which allows the support structure and therefore the support unit to move in a direction perpendicular to the horizontal plane and thus in a direction perpendicular to the direction of movement to allow telescopic movement of the support unit below the pallet.

Preferably, the third drive is selected from a device including a hydraulic drive cylinder, a pneumatic drive cylinder, an electric drive cylinder.

Preferably, the second drive is selected from a device including a hydraulic drive cylinder, a pneumatic drive cylinder, an electric drive cylinder.

Preferably, the first drive is selected from a device including a hydraulic drive cylinder, a pneumatic drive cylinder, an electric drive cylinder.

Preferably, the barrier rod element has a grooved area adapted to provide a normal support surface for the heat sealing element in the wrap wrap machine during the heat sealing operation of the packaging film.

Preferably, the lever arrangement includes a first lever at the free end connected to the support unit via a second axis arrangement and a second lever connected to each other via a first axis arrangement and a second lever at the fixed end via a third lever. The three-axis device is connected to the support structure, at a second end, to the first drive via a fourth-axis device, the fourth-axis device being located closer to the third-axis device than the first-axis device.

Preferably, the first drive is connected at the first end to the support structure by means of a fifth axis.

The utility model has the advantage of providing a blocking device that is easy to separate from the goods at the end of the heat sealing operation.

The objects and advantages of the present invention are achieved by the blocking device defined in the present invention.

Description of the drawings

The drawings are used to provide a further understanding of the present utility model and to explain the present utility model, but do not constitute a limitation on the implementation of the present utility model.

Figure 1 is a schematic structural diagram illustrating a blocking device of the present invention on which a packaging film to be heat-sealed is placed;

Figure 2 is a top view of the device in Figure 1, with the maximum extended position (double dotted line) and the maximum retracted position (solid line) marked in the figure;

Figure 3 is a schematic structural diagram of the device in Figure 1. The operating position (double dotted line) and the first rest position (solid line) are marked in the figure;

Figure 4 is a schematic structural diagram of the device in Figure 1, in which the operating position (double dotted line) and the second rest position (solid line) of Figure 3 are marked;

Figure 5 is a side view of Figure 3;

Figure 6 is a side view of the device of Figure 1 illustrating the position after installation on the pallet winding machine and after telescopic movement under the pallet;

Figure 7 is a schematic structural view of the device of Figure 1 installed on the pallet winding machine and engaged with the pallet;

Figure 8 is a top view of the device of Figure 1 installed on the pallet winding machine and in the maximum retracted position;

FIG. 9 is a partial side view of a portion of the apparatus of FIG. 1 .

Detailed ways

The following describes the general features of the present invention in detail by way of examples, but does not constitute a limitation on the implementation of the present invention.

Referring to the drawings, there is shown a blocking device 10, as can be seen in Figure 7, intended to be installed on a wrapping machine A for packaging with packaging film F, in particular on a wrapping machine A for packaging pallets P.

Referring to Figure 1, the blocking device 10 provides a blocking rod element 14 adapted to receive and support a portion of the film F and a support unit 11 of the blocking rod element 14; as seen in Figures 3 and 4, the blocking rod element can be on the supporting unit 11, Move from the rest position R1, R2 to the extended operating position O.

Specifically, when the blocking rod element 14 is in the extended operating position O, the support unit 11 is laterally extended to receive and support the film F and allow the film F to be heat-sealed at the end of the packaging of the tray P; for this purpose, The barrier bar element 14 has a grooved area 29 adapted to provide a normal support surface for the heat sealing element (not labeled) in the wrapper A during the heat sealing operation. Otherwise, at the end of the heat sealing operation, the barrier rod element 14 assumes the rest position R1, R2 out of contact with the film F.

As shown in FIGS. 4 and 9 , the support unit 11 has a box-like housing 34 extending longitudinally along the support unit 11 , into which a rack 28 is placed, connected to the blocking lever element 14 by a gear 35 .

The rack 28 is movable by a second drive 36 along the box-like housing 34 to allow the blocking lever element 14 to move from the retracted position R1, R2 to the extended operating position O.

In particular, the blocking lever element 14 is movably connected to the gear 35 to change its position relative to the rack 28: for example, in an embodiment of the blocking device 10, the blocking lever element 14 can be removably connected to the gear rack 28. It is fixed to the fixing pin integrated with the gear 35 by screws.

For example, the second drive may be selected from a device including a hydraulic drive, a pneumatic drive, and an electric drive.

As shown in Figure 2, the blocking device 10 further includes a support structure 25 of the support unit 11 and moving devices 16, 17, 18 configured to move the support unit 11 relative to the support structure 25 along the moving direction D1; move The direction D1 is substantially perpendicular to the longitudinal expansion axis of the box-like unit 34 .

Thus, by movement of the support unit 11 , the blocking lever element 14 can be moved toward the pallet P from the maximum extended position MP to the maximum retracted position MR relative to the pallet P.

In detail, as can be seen in Figure 1, the moving means 16, 17, 18 comprise interconnected lever means 17, 18 and a first drive 16, with a free end 30 connected to the support unit 11 and a fixed end 31 connected to the support structure 25 , the first driver is arranged to operate the lever arrangements 17 , 18 and is connected at a first end 32 to the support structure 25 and at a second end 33 to the lever arrangements 17 , 18 .

As can be seen in Figure 2, the first driver 16 is configured to exert a pushing and pulling action on the lever means 17, 18 along an operating direction D2 arranged transversely to the direction of movement D1.

For example, the first drive may be selected from a device including a hydraulic drive, a pneumatic drive and an electric drive.

As shown in FIGS. 1 and 5 , in the embodiment of the blocking device 10 , the lever means 17 , 18 comprise a first lever means 17 and a second lever means 18 interconnected by a first axis means 22 .

Furthermore, the first lever device 17 is also connected to the support unit 11 via a second axis device 26 at the free end 30 , while the second lever device 18 is not only connected to the support structure 25 via a third axis device 20 at the fixed end 31 , but also The fourth shaft device 21 is connected to the first drive 16 via the second end 33 . The fourth axis device 21 is closer to the third axis device 20 than the first axis device 22 . Furthermore, the first drive 16 is also connected at a first end 32 to the support structure 25 via a fifth axis device 27 .

Referring to Figures 1 to 4, the support unit 11 moves along the movement direction D1 to move the blocking rod element 14 close to or away from the pallet P, that is, the support unit 11 moves along the direction D1 from the maximum extended position MP to the maximum retracted position MR. , the movement is guided by a track arrangement 15 adapted to slide within a slide arrangement 24 arranged on a support structure 25 .

Furthermore, the rail device 15 has a stop device 23 for stopping the sliding of the rail device 15 within the slider device 24 when the support unit 11 reaches the maximum extension position MP.

In this way, the support unit 11 can slide safely in direction D1 from the maximum extended position MP to the maximum retracted position MR.

Referring to Figure 2, the lever arrangements 17, 18 and the first drive 16, as can be seen in Figure 8, extend substantially on the same horizontal plane and are movable, or/and are oriented in such a way that in parallel to said direction of movement D1 direction to minimize the overall dimensions.

Finally, as shown in FIG. 5 , the blocking device 10 has a third drive 12 , 13 connected to the support structure 25 , allowing the support structure 25 and therefore the support unit 11 to move in a direction D3 perpendicular to the horizontal plane and thus in a direction perpendicular to the direction of movement. The direction D1 moves to allow telescopic movement of the support unit 11 under the pallet P (see Figure 6). In other words, by means of said third drives 12, 13, the vertical height of the blocking device 10 can be adjusted.

For example, the third drive (12, 13) can be selected from a device including a hydraulic drive, a pneumatic drive and an electric drive.

The movement of the blocking lever element 14 from the retracted position R1, R2 to the extended operating position O is now described in more detail.

As expected, the blocking lever element 14 is movably connected to the gear 35 to change its position relative to the rack 28: for example, see Figures 3 and 4, the blocking lever element 14 is configured around a direction parallel to the direction D1 The axis A1 rotates along the first rotation direction (r1) or the second rotation direction (r2) from the extended operating position O to the rest position R1, R2.

In other words, the blocking rod element 14 is configured to move on the support unit 11 towards a retracted rest position R1 or towards a deployed rest position R2 in which position the blocking rod element 14 extends as an elongated end of the support unit 11 .

In particular, the rotation of the blocking lever element 14 is the result of the linear movement of the rack 28 caused by the second drive 36 , which motion is converted into a rotation of the gear 35 and ultimately into a rotation of the blocking lever element 14 .

Since the blocking rod element 14 can be configured to rotate in the first direction r1 or the second direction r2, the blocking rod element 14 is allowed to still move in a direction substantially consistent with the advancing direction of the pallet P at the end of the heat sealing operation, Disengagement of barrier rod element 14 from film F is facilitated.

As shown above, it is obvious that the blocking device 10 according to the present invention successfully achieves all the preset goals mentioned above.

The description and illustration in the drawings are provided for the purpose of illustrating the innovative functionality of the blocking device 10 .

In practice, various materials can be appropriately selected depending on the requirements and the state of available technology, as long as they are mutually compatible with the specific use and their respective individual components. Modifications and/or additions may be made to the description and illustrations in the drawings.

Claims (14)

1. A blocking device (10) suitable for installation on a wrapping machine (A) for packaging pallets (P) packaged by packaging film (F), and comprising: - a blocking rod element (14) adapted to support and receive a part of the packaging film (F), - the support unit (11) of the blocking rod element (14), The blocking rod element (14) is movable from a rest position (R1, R2) on the support unit (11) in order to detach from the packaging film (F) in an extended operating position (O), where In the extended operating position, the support unit (11) is laterally extended to support and receive the packaging film (F), and allows the packaging film (F) to be placed on the packaging film (F) when the packaging of the tray (P) is completed. The heat sealing operation is performed on F), which is characterized in that the blocking device (10) also includes: - the support structure (25) of the support unit (11), and - moving means configured to move the support unit (11) in the direction of movement (D1) relative to the support structure (25) in order to remove the blocking rod element (14) from the pallet (P) moves from the maximum extended position (MP) to the maximum retracted position (MR) relative to the pallet (P), The moving device includes an interconnected lever device with a free end (30) connected to the support unit (11) and a fixed end (31) connected to the support structure (25), the moving device further comprising a first drive (16) arranged to operate said lever means and connected at a first end (32) to said support structure (25) and at a second end (33) to said lever means, wherein , said first driver (16) is configured to exert pulling and pushing effects on the lever device along an operating direction (D2) arranged transversely with respect to the direction of movement (D1). 2. Blocking device (10) according to claim 1, characterized in that the support unit (11) is connected to a track adapted to slide within a slider device (24) arranged on the support structure (25) Device (15) to guide the support unit (11) to move along the movement direction (D1) so that the blocking rod element (14) is close to or away from the pallet (P), the support unit (11) can Sliding along the movement direction (D1), the pallet (P) moves from the maximum extended position (MP) to the maximum retracted position (MR) relative to the pallet (P). 3. The blocking device (10) according to claim 2, characterized in that the rail device (15) has a stop device (23), when the support unit (11) reaches the maximum extended position ( MP), stop the sliding of the track device (15) in the slider device (24). 4. Blocking device (10) according to any one of claims 1-3, characterized in that the lever device and the first drive (16) extend substantially on the same horizontal plane (o) and can moving in order to move the support unit (11) from the maximum extended position (MP) to the maximum retracted position (MR), the lever device and the first drive (16), in The maximum retracted position (MR) is oriented to minimize the overall dimensions in a direction parallel to said direction of movement (D1). 5. Blocking device (10) according to any one of claims 1-3, characterized in that the blocking rod element (14) is configured around an axis (A1) parallel to the direction of movement (D1) Rotate, along the first rotation direction (r1) or the second rotation direction (r2), from the extended operating position (O) to the rest position (R1, R2), so that at the end of the heat sealing operation Move in a direction that is substantially consistent with the forward direction of the pallet (P). 6. The blocking device (10) according to any one of claims 1 to 3, characterized in that the support unit (11) has a box-shaped housing (34), inside the box-shaped housing (34) A rack (28) is inserted, connected to the blocking lever element (14) via a gear (35), to allow movement of the blocking lever element (14) from the retracted rest position to the extended operating position (O). 7. Blocking device (10) according to claim 6, characterized by comprising a second drive (36) arranged to linearly move said rack (28), said blocking rod element (14) relative to said The gear (35) is removable to change its position relative to the rack (28), changing the movement from the extended operating position (O) to the retracted rest position, the blocking lever element (14) can be configured to move on the support unit (11) towards a folded rest position, or towards a deployed rest position in which the blocking rod element (14) acts as The extended end of the support unit (11) extends. 8. Blocking device (10) according to claim 4, characterized in that the support structure (25) is connected to a third drive (12, 13) which allows the support structure (25) to and the support unit (11) moves along a direction perpendicular to the horizontal plane (o) and therefore in a direction (D3) perpendicular to the direction of movement (D1), to allow the support unit (11) to move at the desired position. The bottom of the pallet (P) performs retractable movement. 9. The blocking device (10) according to claim 8, characterized in that the third drive (12, 13) is selected from the group consisting of a hydraulic drive cylinder, a pneumatic drive cylinder, an electric drive cylinder. 10. The blocking device (10) according to claim 7, characterized in that the second drive (36) is selected from the group consisting of a hydraulic drive cylinder, a pneumatic drive cylinder, an electric drive cylinder. 11. The blocking device (10) according to any one of claims 1 to 3, characterized in that the first drive (16) is selected from the group consisting of a hydraulic drive cylinder, a pneumatic drive cylinder, and an electric drive cylinder. . 12. Barrier device (10) according to any one of claims 1-3, characterized in that the barrier rod element (14) has a grooved area (29) suitable during the heat sealing operation of the packaging film (F) , to provide a normal supporting surface for the heat sealing components in the wrapping machine (A). 13. Blocking device (10) according to any one of claims 1-3, characterized in that the lever means comprise a first lever (17) and a second lever (17) connected to each other by a first axis means (22). Lever (18), the first lever (17) at the free end (30) is connected to the support unit (11) through a second shaft device (26), the second lever (18) at The fixed end (31) is connected to the support structure (25) through a third axis device (20), and the second end (33) is connected to the support structure (25) through a fourth axis device (21). The first drive (16), the fourth axis device (21) is located closer to the third axis device (20) than the first axis device (22). 14. The blocking device (10) according to any one of claims 1-3, characterized in that the first drive (16) is provided at the first end (32) via a fifth axis device ( 27) Connected to said support structure (25).