Bag opening device

Abstract

The subject of the present invention is a device (1) for opening a bag, particularly a bag containing loose material, the device comprising at least one row of sharp elements (6) mounted and fixed on at least one profile (5), the sharp elements (6) being shaped like arrows and the ends of the at least one profile (5) on which the sharp elements are mounted being attached to the periphery of a lower frame (2) of the device (1), a movable frame (3) disposed on the lower frame (2), which is movably connected to the lower frame (2) by pins and locking mechanisms (4) disposed at the corners of the frames (2, 3), and includes at least one profile (7) having a hole of a size suitable for the sharp elements (6) and being positioned above the profile (5) together with the sharp elements (6), the device (1) further comprising a handle (9) attached to the lower frame (2).

Description

Technical Field

[0001] The present invention relates to a device for opening bags, particularly large bags or other bags containing loose material. Background Technology

[0002] Bag cutting devices, particularly those for agricultural use, are known in the art. In devices known in the art, the blade is oriented about a central axis, with a greater height at the central axis portion of the blade, making the overall shape of the cutting unit nearly conical.

[0003] Utility model W.128345 is known, essentially a self-adjustable large bag cutter, characterized by a set of blades that lift a molded wall arranged together, with the longest and lower sides fixed in a base. The molded wall has vertical grooves in which elastic elements are arranged. Above the blades is a spring-hinged housing section with an arrangement of external grooves corresponding to the contours of the set of blades. The housing section has an internal partition with through holes at its upper part. The elastic elements are clamps located in the vertical grooves. The cap portion has an umbrella-shaped profile on its outer surface.

[0004] European Patent EP2853499 (B1) discloses a device for opening bags, particularly for opening bags containing materials for agricultural and industrial use. The device includes a central axis oriented vertically, the upper portion of which includes at least one end adapted to pierce the bag. The device also includes at least one blade adapted to cut the bag, attached to the lower portion of the central axis, the blade, or each blade, having a sharp edge oriented towards the upper portion of the central axis. The device is characterized by further including a fixing device for securing the free portion of each blade opposite the lower portion of the central axis.

[0005] Since these bags tilt uncontrollably when placed on various cutters known in the prior art, especially on blades with tapered structures, it is necessary to develop a device for cutting bags that will open them in a safe and stable manner, and whose contents will overflow to the intended location. Summary of the Invention

[0006] The essence of the present invention is a device for opening bags, particularly bags containing loose material, comprising at least one row of sharp elements mounted and fixed on at least one profile, the sharp elements being arrow-shaped and the ends of the at least one profile mounted thereon being attached to the periphery of a lower frame of the device, a movable frame located above the lower frame and movably connected to the lower frame by pins and locking mechanisms provided at the corners of the frame, the mechanism including at least one second profile having holes sized to fit the dimensions of the sharp elements and positioned above the profile having the sharp elements, and the device further including a handle attached to the lower frame.

[0007] Preferably, at least one foldable blocking member of the movable frame is mounted on at least one side of the lower frame.

[0008] The movable frame includes reinforcing ribs between its sides and at least one second profile having holes.

[0009] Preferably, the lower frame includes support elements located at its corners.

[0010] Optionally, one end of the pin has a spherical protrusion or a joint.

[0011] Preferably, the device includes a buffer mounted on the lower frame.

[0012] The buffer may optionally be in the form of a vertical section that is connected to the lower frame on one side and includes a support on the other side.

[0013] The buffer folds at the height of the movable frame.

[0014] The buffer includes a rubber element or at least one damping element in the form of a spring.

[0015] Preferably, the locking mechanism is in the form of at least two springs.

[0016] Optionally, the device includes four springs disposed at the corner between the lower frame and the movable frame.

[0017] Preferably, the pin connecting the lower frame and the movable frame is located inside a spring arranged at the corner of the frame.

[0018] Preferably, the device has two rows of sharp elements, which may optionally be arranged at right angles to each other.

[0019] The sharp elements have different spike angles, and preferably, elements with larger spike angles and smaller spike angles are arranged alternately in rows.

[0020] Sharp elements are detachably mounted on the profile.

[0021] The sharp element is movably mounted on the contour relative to the fixed part.

[0022] Sharp elements are made of steel.

[0023] The lower frame and the movable frame are preferably square.

[0024] Preferably, the device includes a support mechanism that enables the device to be mounted on a container, shipping container, or semi-trailer.

[0025] The support mechanism of the device includes two opposing handles connected by a support column having a hole slidably positioned in a rack, and the handles include a shaped handle connector with a support column, the connector including a pin locking hole.

[0026] The device according to the invention can safely open various types of bags containing loose material. It is particularly useful in agriculture. The device, according to the invention, is in the form of two planar frames, with a locking mechanism between the two planes, allowing the bag to be opened to be stably positioned without adverse lateral movement. The weight of the bag presses the movable frame against the lower frame; this movement causes a sharp element to pop out through a hole in a second profile located in the movable frame, allowing the bag to be torn.

[0027] Because of the use of a preferred spring-based locking mechanism, the sharp elements are initially positioned between the lower frame and the movable frame. This protects them from uncontrolled slippage and accidental injury to the operator. The mechanism prevents the sharp elements from slipping out under accidental pressure. The force of the springs used in the device according to the invention prevents accidental pressure. Depending on the type of spring, they can be compressed under pressure with a weight of, for example, not less than 60 kg, making it impossible for the sharp elements to slip out with less pressure. If it is necessary to open a lighter bag, springs with different pressures can be used.

[0028] The device according to the invention may additionally utilize at least one foldable blocking member located on the lower frame, which, when unfolded, further prevents the movable frame from descending uncontrollably and simultaneously sliding out the sharp element. When the device is not in use, the foldable blocking member is unfolded, making it impossible to lower the movable frame and cut the bag.

[0029] The foldable blocking member can be in the form of two parts that can move relative to each other, one part supporting the movable frame, and the other part supporting the first part to prevent it from folding uncontrollably.

[0030] The lower frame is connected to the movable frame via a mechanism based on pins with balls or joints at their ends. The given pin is located inside the spring.

[0031] The movable frame may also include reinforcing ribs permanently fixed between at least one second profile and side of the frame, which allows for additional reinforcement of the structure when using the device for opening the heavy bag according to the invention.

[0032] In the device according to the invention, a buffer can be applied that additionally stabilizes the bag placed on the device and restricts its movement, such as moving it outside the movable frame, and also significantly facilitates the positioning of the bag relative to the sharp elements. The buffer at the location attached to the lower frame can have a shock absorber in the form of an elastic element, such as a spring or rubber element. Furthermore, the folding arrangement of the buffer so that its upper part rests on the movable frame further prevents uncontrolled slippage of the sharp elements when the device is not in use.

[0033] The geometry and varying sizes of the sharp elements allow bags to be cut over a larger area than in prior art devices, thus enabling faster and more efficient emptying. In an alternative variation of the invention, the sharp elements can be movably attached to the contour relative to a fixed component. The sharp elements can be made of steel, or they can be made of stainless steel with higher corrosion resistance.

[0034] For example, a support mechanism can be used when it is necessary to empty the contents of a bag onto a trailer. This mechanism allows for adjustment of the handle spacing and lowering of the device according to the invention by changing the position of the pins. This adjustment of the length of the support mechanism allows the device to adapt to different trailer spacings, regardless of manufacturer or model, making the device according to the invention versatile. The handles of the support mechanism can vary in curvature and can be interchanged depending on the size and shape of the container / trailer edge.

[0035] On the other hand, reducing the likelihood of the device according to the invention by changing the position of the pin on the handle allows the device on the trailer to be potentially covered with a waterproof tarpaulin. Attached Figure Description

[0036] The figures illustrate a specific embodiment of the invention, wherein the various figures represent:

[0037] Figure 1 The device according to the invention;

[0038] Figure 2 Cross-section of the device according to the invention;

[0039] Figure 3 A device with a buffer according to the present invention;

[0040] Figure 4 A device with a folding buffer according to the present invention;

[0041] Figure 5 A device with a support mechanism according to the present invention;

[0042] Figure 6 The device according to the invention has a foldable blocking member in a foldable form;

[0043] Figure 7 The device according to the invention has a foldable blocking member in an unfolded form. Detailed Implementation

[0044] Figure 1 A device 1 according to the invention is shown, comprising two parallel square frames: a lower frame 2 and a movable frame 3, connected by pins placed at the corners of the frames. A locking mechanism is installed between the lower frame 2 and the movable frame 3, and in an embodiment of the device according to the invention, this locking mechanism takes the form of four springs 4 disposed at the corners of the frames 2 and 3. The pins (not shown) between the frames are located inside the springs 4. Two profiles 5 are fixed perpendicularly to the lower frame 2, their ends fixed to the periphery of the lower frame 2, as shown. Figure 2 As shown. Outline 5 has a sharp element 6 in the shape of an arrow (such as...). Figure 2 As shown, these elements are arranged alternately, with larger and smaller arrow angles. A second profile 7 is fitted with holes on the movable frame 3, the holes being adjusted to the size of the sharp element 6 and positioned on the profile 5 with the sharp element 6. Reinforcing ribs 8 are fixed between the second profile 7 with the holes and the periphery of the movable frame 3.

[0045] A handle 9 is mounted on the opposite side of the lower frame 2, allowing the device according to the invention to be mounted on a suitably sized container or on a support mechanism. A support member 10 is attached to the lower side of the lower frame 2.

[0046] Figure 3 An example of the device 1 according to the invention is shown, wherein a buffer 11 is mounted on a lower frame 2. The buffer is in the form of a section, one end of which is connected to the lower frame 2, while the other end includes a support 111. In the illustrated embodiment, the support 111 is in the form of a rectangular profile. In another embodiment, the longer side of the support 111 may be bent toward the device according to the invention, which helps to stabilize the bag when opened at the height of the frame of the device 1. The height of the buffer 11 is adjusted in such a way that when it is folded, the support 111 rests on a movable frame 3. The buffer 11 may include a damping element in the form of a rubber element or a spring.

[0047] The buffer folds at the height of the movable frame, and after folding (e.g.) Figure 4As shown), its upper part is placed on the movable frame 3, thereby additionally ensuring that the movable frame 3 is not subjected to uncontrolled pressure and the protrusion of the sharp element 6 when the device is not in use.

[0048] Figure 5 A device with a support mechanism 12 according to the present invention is shown. The support mechanism 12 includes a support column 121 having a hole for length adjustment, the support column 121 being slidably positioned in a rack 122. The connection between the support column 121 and the rack 122 and the length adjustment can be achieved by a pin 123.

[0049] The rack 122 allows the length of the support mechanism 12 to be adjusted according to the width of the container, and the device according to the invention will be placed on the container. The support column 121 is connected to the handle 124 of the support mechanism 12. The handle 124 includes a shaped connector 125 with the support column 121, the connector including a pin locking hole that allows adjustment of the height of the support column 121, on which the device of the invention is mounted.

[0050] The handle 9 of the device according to the invention and the handle 124 of the support mechanism can both include hooks (91; 1241) to facilitate the attachment of the device according to the invention to a container by means of a rope or chain.

[0051] Figure 6 and Figure 7 An embodiment of the present invention is shown, which is a bag opening device having a foldable blocking member 13 connected to a lower frame 2. Figure 6 The diagram shows the foldable blocking member 13 in a closed position, and the operation of the device according to the invention is possible. Figure 7 The diagram shows a case where the foldable blocking member 13 is unfolded and one of its components blocks the movement of the movable frame 3.

Claims

1. A device (1) for opening a bag containing loose material, comprising at least one row of sharp elements (6) mounted and fixed on at least one profile (5), characterized in that, The sharp elements (6) are shaped like arrowheads and the ends of at least one contour (5) into which they are embedded are attached to the periphery of the lower frame (2) of the device (1), wherein a movable frame (3) is placed above the lower frame (2), the movable frame (3) being movably connected to the lower frame (2) by a pin and locking mechanism (4) provided at the corner of the frame (2, 3), and including at least one second contour (7) having a hole of a size suitable for the sharp element (6) and positioned above the contour (5) with the sharp element (6), the device also including a handle (9) attached to the lower frame (2) so that the device (1) can be mounted on a suitably sized container or on a support mechanism; At least one foldable blocking member (13) of the movable frame (3) is mounted on at least one side of the lower frame (2) such that the operation of the device (1) is possible when the foldable blocking member (13) is in a closed state, and when the foldable blocking member (13) is unfolded, it blocks the movement of the movable frame (3).

2. The apparatus according to claim 1, characterized in that, The movable frame (3) includes reinforcing ribs (8) between its side and at least one second profile (7) with holes.

3. The apparatus according to claim 1, characterized in that, The lower frame (2) includes a support member (10) located at its corner.

4. The apparatus according to claim 1, characterized in that, The pin has a spherical protrusion or joint on one end.

5. The apparatus according to claim 1, characterized in that, The device includes a buffer (11) fixed to the lower frame (2).

6. The apparatus according to claim 5, characterized in that, The buffer (11) is in the form of a vertical portion, which is attached to the lower frame (2) on one side and includes a bracket (111) on the other side.

7. The apparatus according to claim 5, characterized in that, The buffer (11) is folded at the height of the movable frame (3).

8. The apparatus according to claim 5, characterized in that, The buffer (11) includes a damping element in the form of a rubber element or at least one spring.

9. The apparatus according to claim 1, characterized in that, The locking mechanism (4) is in the form of at least two springs.

10. The apparatus according to claim 1, characterized in that, The device includes four springs arranged at the corner between the lower frame (2) and the movable frame (3).

11. The apparatus according to claim 1, characterized in that, The pin that connects the lower frame (2) to the movable frame (3) is located inside a spring arranged at the corner of the frame.

12. The apparatus according to claim 1, characterized in that, The device has two rows of sharp elements (6), which are perpendicular to each other.

13. The apparatus according to claim 1, characterized in that, The sharp element (6) has a different tip angle.

14. The apparatus according to claim 1, characterized in that, Sharp elements (6) with larger arrow angles and sharp elements with smaller arrow angles are arranged alternately in a row.

15. The apparatus according to claim 1, characterized in that, The sharp element (6) is detachably mounted on the contour.

16. The apparatus according to claim 1, characterized in that, The sharp element (6) is movably mounted on the contour relative to the fixed part.

17. The apparatus according to claim 1, characterized in that, The sharp element (6) is made of steel.

18. The apparatus according to claim 1, characterized in that, The lower frame (2) and the movable frame (3) are square.

19. The apparatus according to claim 1, characterized in that, The device includes a support mechanism (12) that enables the device to be mounted on containers, shipping containers, and semi-trailers.

20. The apparatus according to claim 19, characterized in that, The support mechanism (12) of the device includes two opposing handles connected by a support column (121) having a hole slidably positioned in a rack (122), and the handles include a shaped handle connector with a support column, the connector including a pin locking hole.

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