Bag opening device

Abstract

The subject of the present invention is a device (1) for opening bags, in particular bags containing loose material, consisting of at least one row of sharpened elements (6) attached and fixed on at least one profile (5), the sharpened elements (6) being shaped like an arrowhead, the end of at least one profile (5) being recessed and attached to the periphery of a lower frame (2) of the device (1), a mobile frame (3) being arranged above the lower frame (2) and movably connected to the lower frame (2) by pins and locking mechanisms (4) arranged at the corners of the frames (2, 3), comprising at least one profile (7) with holes adapted to the dimensions of the sharpened elements (6) and arranged on the profile (5) with the sharpened elements (6), the device (1) further comprising a handle (9) attached to the lower frame (2).

Description

[Technical field]

[0001] The subject of the invention is a device for opening bags, in particular large bags or other bags containing loose material. [Background technology]

[0002] Bag cutting devices, particularly for use in agriculture, are known in the art, in which the blades are oriented about a central axis, with the portion of the blade at the central axis having a greater height, which makes the overall cutting unit approximate a cone in shape.

[0003] Utility model W.128345 is known, the essence of which is a self-adjusting large bag cutter, characterized in that it has a set of blades covering a profiled wall set with its longest side and its underside fixed to a base, while the profiled wall has a vertical slot in which an elastic element is set, and above the set of blades a spring-hinged casing segment is set, which has an arrangement of external slots with a shape corresponding to the contour of the set of blades, the casing segment having an internal partition with a through hole in its upper part. The elastic element is a clamp located in the vertical slot. The cover part has an umbrella-shaped contour on the outer surface.

[0004] EP 2 853 499 B1 discloses a device for opening bags, in particular bags containing agricultural and industrial materials, comprising a vertically oriented central shaft, the upper part of which comprises at least one end adapted to puncture the bag, the device further comprises at least one blade adapted to cut the bag and attached to the lower part of the central shaft, the or each blade having a sharp edge oriented towards the upper part of the central shaft, the device further comprising fastening means for fastening the free part of each blade facing the lower part of the central shaft. Summary of the Invention [Problem to be solved by the invention]

[0005] These bags tilted uncontrollably when placed on the various cutters known from the prior art, in particular on blades with a cone-like structure, known from the prior art, making it necessary to develop a device for cutting the bags, which opens them in a safe and stable manner so that their contents flow out into the intended location. [Means for solving the problem]

[0006] The essence of the invention is a device for opening bags, in particular bags containing loose material, which consists of at least one row of pointed elements attached and fixed to at least one profile, The pointed element is in the shape of an arrowhead, the end of at least one profile to which it is attached is attached around the periphery of a lower frame of the device, the movable frame is disposed above the lower frame and movably connected to the lower frame by pins disposed at the corners of the frame, the mechanism comprises at least one profile with a hole that fits in size to the dimensions of the pointed element and is disposed above the profile with the pointed element, and the device further comprises a handle attached to the lower frame.

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

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

[0009] Preferably, the lower frame comprises support elements arranged at its corners.

[0010] Optionally, the pin terminates on one side in a spherical bulge or joint.

[0011] Preferably, the apparatus includes a bumper attached to the lower frame.

[0012] The bumper is optionally in the form of a vertical cross section attached to the lower frame on one side and including a bracket on the other side.

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

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

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

[0016] Optionally, the apparatus comprises four springs disposed between the lower frame of the corners and the movable frame.

[0017] Preferably, the pins connecting the lower frame and the movable frame are located inside the springs located at the corners of the frames.

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

[0019] The pointed elements have different spearhead angles, preferably with elements with larger and smaller spearhead angles alternating in a row.

[0020] The pointed element is removably attached to the profile.

[0021] The pointed element is attached to the profile so as to be movable relative to the fixed part.

[0022] The pointed elements are made of steel.

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

[0024] Preferably, the device is equipped with a support mechanism that allows the device to be attached to a container or semi-trailer.

[0025] The support mechanism of the device includes two opposing handles connected by a post with a hole slidably disposed in the toothed rack, the handles including a profiled handle connector with the post, the connector including a pin lock hole.

[0026] The device according to the invention allows the safe opening of various kinds of bags containing loose material. It is used in particular in the agricultural industry. The structure of the device according to the invention in the form of two flat frames, between which there is a locking mechanism, allows a stable positioning of the bag to be opened without its unfavorable lateral movements. The weight of the bag presses the mobile frame against the lower frame and through this movement sharp elements can be ejected through holes in the profile arranged on the mobile frame and tear the bag.

[0027] Preferably, by using a spring-based locking mechanism, the pointed element is placed in the initial position between the lower frame and the movable frame, thus protecting against uncontrolled sliding and accidental injuries to the person operating the device, the mechanism blocks the pointed element against accidental pressure. The force of the spring used in the device according to the invention prevents it against accidental pressure. Depending on the type of spring, the spring can be compressed under pressure with a weight of, for example, 60 kg or more, which makes it impossible to slide the pointed element with a lower pressure. For example, if a bag needs to be opened with a lighter weight, it is possible to use a spring with a different pressure.

[0028] The device according to the invention can additionally use at least one folding prevention member arranged on the lower frame, which, after unfolding, additionally prevents the movable frame against uncontrolled lowering and simultaneous sliding from sharp elements. The folding prevention member unfolds when the device is not in use, preventing the movable frame from lowering and cutting the bag.

[0029] The collapse prevention member may be in the form of two parts movable relative to each other, one of which supports the movable frame and the other of which supports the first part which in turn prevents uncontrolled collapse.

[0030] The lower frame is connected to the movable frame by a mechanism based on pins terminated in balls or joints, with a given pin located inside the spring.

[0031] The movable frame may further comprise reinforcing ribs permanently fixed between at least one profile and a side of the frame, which allows additional reinforcement of the structure when using the device according to the invention to open heavy bags.

[0032] In the device according to the invention, a bumper can be applied which further stabilizes the bag placed on the device, for example limiting its movement outside the movable frame and also significantly facilitating the positioning of the bag relative to the sharp elements. The bumper at the place of attachment to the lower frame can have a shock absorber in the form of an elastic element, for example a spring or a rubber element. In addition, the bumper is folded so that its upper part is placed on the movable frame, which additionally prevents uncontrolled sliding of the sharp elements when the device is not in use.

[0033] The geometric shape of the pointed elements and their different sizes allow the bag to be cut open over a larger area than in such prior art devices, and therefore the bag can be emptied faster and more efficiently. In an optional variant of the invention, the pointed elements can be connected to the profile in a manner that allows them to move relative to the fixed part. The pointed elements can be made of steel or stainless steel with higher corrosion resistance.

[0034] The support mechanism can be used, for example, when the contents of the bag need to be poured into a trailer. This mechanism makes it possible to lower the device according to the invention by adjusting the spacing of the handles and changing the position of the pins. Such adjustment of the length of the support mechanism makes it possible to adapt the device to different spacings of trailers, regardless of manufacturer and model, making the device according to the invention universal. The handles of the support mechanism may have different shapes of bends and may be used interchangeably depending on the size and shape of the edges of the container / trailer.

[0035] On the other hand, the possibility of lowering the device according to the invention by changing the position of the pin on the handle allows the potential covering of the device on the trailer by a tarpaulin.

[0036] The object of the present invention is illustrated in the figures, each of which represents: [Brief description of the drawings]

[0037] [Figure 1] FIG. 1 shows an apparatus according to the invention. [Diagram 2] 1 is a cross-sectional view of an apparatus according to the present invention; [Diagram 3] FIG. 2 shows a device according to the invention with a bumper. [Figure 4] FIG. 2 shows a device according to the invention with a folded bumper. [Diagram 5] FIG. 2 shows a device according to the invention with a support mechanism. [Figure 6]FIG. 2 shows a device according to the invention with a collapse prevention member in a collapsed configuration. [Figure 7] FIG. 2 shows a device according to the invention with a collapse prevention member in an unfolded configuration. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0038] FIG. 1 shows a device 1 according to the invention, consisting of two square frames parallel to each other, namely a lower frame 2 and a mobile frame 3, connected by pins located at the corners of the frames. A locking mechanism is installed between the lower frame 2 and the mobile frame 3, which in the embodiment of the device according to the invention is in the form of four springs 4 located at the corners of the frames 2, 3. The pins between the frames (not shown) are located inside the springs 4. Two profiles 5 are fastened perpendicular to each other on the lower frame 2, so that their ends are fixed on the circumference of the lower frame 2, also shown in FIG. 2. The profile 5 has a pointed element 6 (shown in FIG. 2) in the shape of an arrowhead, the elements being arranged alternately with a larger and a smaller arrowhead angle. A profile with holes 7 adjusted to the dimensions of the pointed element 6 is installed on the mobile frame 3 and is placed on top of the profile 5 with the pointed element 6. Between the profile with holes 7 and the periphery of the mobile frame 3, a reinforcing rib 8 is fixed.

[0039] Handles 9 are attached to both sides of the lower frame 3, allowing the device according to the invention to be attached to a size-matched container or to a support mechanism. A support member 10 is attached to the underside of the lower frame 3.

[0040] FIG. 3 shows an example of a device 1 according to the invention, in which a bumper 11 is attached to the lower frame 2. The bumper is in the form of a part which is attached at one end to the lower frame 2 and at the other end is provided with a bracket 111. The bracket 111 in the embodiment shown is in the form of a rectangular profile. In another embodiment, the long side of the support 111 may be bent towards the device according to the invention, which facilitates the stabilization of the bag which is opened at the height of the frame of the device 1. The height of the bumper 11 is adjusted so that when folded, the bracket 111 rests on the movable frame 3. The cushioning 11 may comprise a damping element in the form of a rubber element or a spring.

[0041] The bumper is folded at the height of the movable frame and, after folding, its upper part is placed on the movable frame 3, as shown in FIG. 4, which provides additional fixation against uncontrolled pressure on the movable frame 3 and protrusion of the pointed elements 6 when the device is not in use.

[0042] 5 shows a device according to the invention with a support mechanism 12. The support mechanism 12 comprises a post 121 with a hole for length adjustment, which post 121 is slidably arranged on a toothed rack 122. The connection between the post 121 and the toothed rack 122 as well as the length adjustment are possible by a pin 123.

[0043] The toothed rack 122 makes it possible to adjust the length of the support mechanism 12 depending on the width of the container in which the device according to the invention is placed. The post 121 is connected to a handle 124 of the support mechanism 12. The handle 124 comprises a profiled connector 125 of the post 121, which connector comprises a pin-lockable hole making it possible to adjust the height of the post 121 to which the device according to the invention is attached.

[0044] Both the handle 9 of the device according to the invention and the handle 124 of the support mechanism can be equipped with hooks (91, 1241) to facilitate attachment of the device according to the invention to a container by means of a rope or chain.

[0045] Figures 6 and 7 show an embodiment of the invention in the form of a bag opening device with a fold-preventing member 13 attached to the lower frame 2. Figure 6 shows the situation in which the fold-preventing member 13 is in the closed configuration and operation of the device according to the invention is possible, while Figure 7 shows the situation in which the foldable locking element 13 is deployed and one of its parts blocks the movement of the movable frame 3.

Claims

1. A device (1) for opening bags, comprising a number of pointed elements (6) attached and fixed in at least one row on at least one profile (5), said pointed elements (6) being shaped like arrowheads, two profiles (5) fastened together on the lower frame (2) such that their ends are fixed on the periphery of said lower frame (2), a movable frame (3) is arranged above said lower frame (2) and is secured by pins and locking mechanisms (4) arranged at the respective corners of said lower frame (2) and said movable frame (3). Thus, the device comprises at least one profile (7) movably connected to the lower frame (2), adapted to the dimensions of the pointed elements (6) and with holes arranged on the profile (5) with the pointed elements (6), the device comprises a support mechanism (12) allowing the device to be attached to a container, a semi-trailer, the device (1) further comprising a handle (9) attached to the lower frame (2) allowing the device (1) to be attached to the container of a suitable size or to the support mechanism (12).

2. 2. A device according to claim 1, characterized in that at least one foldable blocking member (13) of the movable frame (3) is attached to at least one side of the lower frame (2).

3. 2. Device according to claim 1, characterized in that the mobile frame (3) comprises reinforcing ribs (8) between its sides and at least one profile (7) with holes.

4. 2. Device according to claim 1, characterized in that the lower frame (2) comprises support members (10) arranged at its corners.

5. 2. The device of claim 1, wherein the pin terminates on one side with a spherical bulge or joint.

6. 2. Device according to claim 1, characterized in that it comprises a bumper (11) fixed to the lower frame (2).

7. 7. The device according to claim 6, characterized in that the bumper (11) is optionally in the form of a vertical section attached on one side to the lower frame (2) and including a bracket (111) on the other side.

8. 7. Device according to claim 6, characterized in that the bumper (11) is folded at the height of the movable frame (3).

9. 7. The device according to claim 6, characterized in that the bumper (11) comprises a damping element in the form of a rubber element or at least one spring.

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

11. 2. Device according to claim 1, characterized in that it comprises four springs arranged between the lower frame (2) and the movable frame (4) at their corners.

12. 2. The device according to claim 1, characterized in that the pins connecting the lower frame (2) to the movable frame (3) are arranged inside springs arranged at the respective corners of the lower frame (2) and the movable frame (3).

13. 2. A device according to claim 1, characterized in that it comprises two rows of pointed elements (6), said rows being at right angles to each other.

14. 2. The device according to claim 1, characterized in that the plurality of pointed elements (6) each have a different tip angle.

15. 2. A device according to claim 1, characterized in that pointed elements (6) with a larger arrowhead angle and pointed elements with a smaller arrowhead angle are arranged in a row alternating with each other.

16. 2. Device according to claim 1, characterized in that the pointed element (6) is removably attached to the profile.

17. 2. Device according to claim 1, characterized in that the pointed element (6) is movably mounted on the profile.

18. 2. Device according to claim 1, characterized in that said pointed element (6) is made of steel.

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

20. 2. The device according to claim 1, characterized in that the support mechanism (12) of the device comprises two opposing handles connected by a post (121) with a hole slidably arranged in a toothed rack (122), the handles comprising a profiled handle connector with the post, the connector comprising a pin lock hole.

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