Embedded bag breaking knife assembly

Abstract

An embedded bag breaking cutter assembly comprises at least two cutters. The body of one cutter is provided with a notch for embedding other cutters, and the notch extends downwards to a target position from the position below the tip of the cutter; the vertical faces of the cutter tip ends of other cutters are embedded into the notches of the cutter and detachably connected with the cutter, and the cutting edge parts of all the cutters are exposed to the outside. The device is simple in structure, convenient to maintain and low in cost, can greatly reduce burrs and foreign matters, and is particularly suitable for occasions with high requirements on material cleanliness.

Description

TECHNICAL FIELD

[0001] The utility model relates to material processing technical field, especially a kind of embedded bag breaking knife assembly. BACKGROUND

[0002] In material processing system, there is equipment or component for feeding solid particles or powder material, such as ton bag unpacking station. For this kind of equipment needing to break bag for feeding, its working principle is to point damage to ton bag by knife tip, and continue to cutting damage to ton bag by knife edge, so as to break a hole at the bottom of ton bag which is enough for equipment feeding. The existing bag breaking knife assembly is mainly divided into two categories: the first category is integral welded knife holder and blade device; the second category is integral welded knife holder plus locking detachable blade device.

[0003] Among them, the integral welded knife holder and blade device of the first category is of integral welded structure, which is firm in structure, but the knife tip needs to be replaced as a whole after wear, which is high in cost; while the integral welded knife holder plus locking detachable blade device of the second category uses bolts to connect the blade and the holder, so that the blade can be easily replaced after wear, which is lower in maintenance cost, but the knife tip may be forked during installation; the forked knife tip may cut out separate ton bag debris during bag breaking, which may lead to the risk of ton bag debris entering the material during unloading. Therefore, although the existing two kinds of cross-shaped ton bag breaking knife devices have their own advantages, the high cost and the disadvantage of debris entering the material must be overcome for the industry with high requirement on material cleanliness.

[0004] CN221661179U discloses a bag breaking knife assembly and ton bag unpacking equipment, the bag breaking knife assembly comprises a base, a plurality of cutters and a support, the plurality of cutters are inclined, the first ends of the plurality of cutters are spaced apart and connected to the base, one end of the support has a groove, the second ends of the plurality of cutters are inserted into the groove, the other end of the support is connected to the base, and the distance between the groove and the base is adjustable to adjust the inclination angle of the plurality of cutters so that the tips of the second ends of the plurality of cutters coincide. The bag breaking knife assembly of the patent can detach the cutters and prevent the knife tip from being forked, but on the one hand, the tips of the plurality of cutters coincide at one point, which still has the risk of causing gap between the tip and the edge, and the overall structure is relatively complex; on the other hand, the bolts are exposed, which may cause scratches and generate burrs and foreign matters. UTILITY MODEL CONTENTS

[0005] The utility model aims at overcoming the above-mentioned shortcomings of the prior art and providing an embedded bag breaking knife assembly which is simple in structure, low in cost and high in cleanliness.

[0006] The utility model discloses a technical scheme: a built-in bag breaking knife assembly, comprising at least two knives, a slot for embedding other knives is formed in the body of one knife, the slot extends downward from the position below the cutting edge of the knife to a target position, the cutting edge end of other knives is embedded in the slot of the knife and detachably connected with the knife, and the cutting edge of all knives is exposed outside.

[0007] Further, each knife body is provided with a mounting hole for accommodating the connecting piece at the connecting joint, so that the connecting piece can be completely hidden in the knife body.

[0008] Further, the bag breaking knife assembly comprises a first knife, a second knife and a third knife, the first knife is an integral structure with cutting edges on both sides, the second knife and the third knife are half-piece structures with a cutting edge on one side, the front and back of the body of the first knife are respectively provided with a first slot and a second slot, the two slots are oppositely arranged and not communicated, the cutting edge end of the second knife is embedded in the first slot, and the cutting edge end of the third knife is embedded in the second slot, and the second knife and the third knife are detachably connected with the first knife through the connecting pieces.

[0009] Further, the connecting piece is a bolt, the bolt extends into through the side wall of the mounting hole of the second knife or the third knife, passes through the threaded holes in the first slot and the second slot of the first knife, and finally enters the mounting hole of the third knife or the second knife for threaded fixing.

[0010] Further, the mounting hole is a through hole formed in the knife body, and an inner wall is arranged in the through hole for mounting the connecting piece, and the second knife and the third knife are provided with at least two mounting holes arranged in an up-down direction on the side close to the cutting edge end, for being connected with the first knife through the connecting pieces.

[0011] Further, the first knife, the second knife and the third knife are also provided with mounting holes below the cutting edges, for fixing the whole bag breaking knife assembly on other platforms or supports through the connecting pieces.

[0012] Further, the lower part of the cutting edge end vertical surface of the second knife and the third knife is provided with a step, which can be connected with the corresponding slot.

[0013] Further, the first knife comprises a body, the body is a sheet structure, the two sides of the body are inclined surfaces, forming inclined cutting edges, the inclined cutting edges of the two sides converge into a cutting edge at the top of the body, and the inclined cutting edges extend vertically downward at the end away from the cutting edge, forming a vertical cutting edge or a non-cutting edge surface, the second knife and the third knife are half-piece structures, and the sizes of the second knife and the third knife are each half of the size of the first knife, and the three knives form a cross-shaped bag breaking knife with the cutting edge of the first knife as the main cutting edge and the cutting edges of the three knives as the multi-faceted cutting edge.

[0014] Alternatively, the bag breaking knife assembly includes two knives, both of which are integral structures with blades on both sides. One knife is provided with the notch, which is a long strip through hole. The blade portion on one side of the other knife passes through the notch, and the vertical surface of the knife tip in the middle is embedded in the notch, so that after the two knives are connected, a cross-shaped bag breaking knife is formed with the tip of one knife as the main tip and the blades of the two knives as multi-faceted blades.

[0015] Furthermore, the two cutters are fixed with bolts via angle brackets.

[0016] Beneficial effects of the utility model:

[0017] (1) By embedding the tool tip, compared with the existing method of adjusting the tool tip angles of multiple tools so that the tool tips of multiple tools coincide at one point, the tool tip has higher matching accuracy and stability, can completely avoid the gap at the tool tip, and has higher material cleanliness. It effectively avoids the errors and instability that may occur during the angle adjustment process, thereby improving the overall cutting consistency of the tool and reducing the generation of burrs and foreign matter. It is particularly suitable for occasions with high requirements for material cleanliness;

[0018] (2) By embedding the connector in the mounting hole so that it does not protrude from the tool surface, scratches, burrs, or foreign matter adhesion caused by the protruding part contacting the material or other objects can be effectively avoided, ensuring the smoothness and safety of the tool;

[0019] (3) The blades on each side include an inclined blade and a vertical blade, which can ensure that the ton bag is cut through by the blade, and prevent the ton bag from being scratched and broken when there is no blade edge, thereby generating foreign matter;

[0020] (4) By designing the second tool and the third tool into split sheet-like tool bodies, heat treatment and cutting edge processing are facilitated, manufacturing is simple, and tool grinding and maintenance are also facilitated. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic diagram of the three-dimensional structure of Example 1 of the present utility model;

[0022] Figure 2 It is a front view of embodiment 1 of the present utility model;

[0023] Figure 3 yes Figure 2 A top view of the illustrated embodiment 1;

[0024] Figure 4 yes Figure 2 AA sectional view of embodiment 1 is shown.

[0025] Description of the accompanying drawings:

[0026] 1. First tool; 2. Second tool; 3. Third tool; 4. Bolt; 5. Step; 6. Mounting hole;

[0027] 11. Main body; 12. Inclined blade; 13. Blade tip; 14. Vertical blade; 15. First notch; 16. Second notch. DETAILED DESCRIPTION

[0028] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0029] Example 1

[0030] like Figures 1 to 4 As shown: An embedded bag-breaking knife assembly includes a first knife 1, a second knife 2 and a third knife 3. The first knife 1 is an integral structure with blades 12 on both sides, and the second knife 2 and the third knife 3 are half-piece structures with blades on one side; the front and back sides of the body of the first knife 1 are respectively provided with a first notch 15 and a second notch 16, the second knife 2 is embedded in the first notch 15, and the third knife 3 is embedded in the second notch 16, and the second knife 2, the third knife 3 and the first knife 1 are detachably connected by bolts 4.

[0031] Specifically, the first cutter 1 includes a body 11, which is a sheet-like structure. Both sides of the body 11 are beveled, forming an inclined blade 12. The inclined blades 12 on both sides converge at the vertex of the body to form a blade tip 13, and the end of the inclined blade 12 away from the blade tip 13 extends vertically downward to form a vertical blade 14 or a non-blade surface. It is understood that the vertical surface can be a blade surface or a non-blade surface. In this embodiment, the vertical blade is preferably designed to be combined with the inclined blade 12 to form a complete blade, which can ensure that the ton bag is cut by the blade, preventing the ton bag from being scratched and bursting when there is no cutting edge, thereby generating foreign matter.

[0032] The second and third cutters 2 and 3 are each half-pieces with a blade on one side. The two cutters are shaped like right-angled trapezoids, effectively forming the entire first cutter when combined. This means the second and third cutters are each half the size of the first. The single-sided blades of the second and third cutters 2 and 3 also include angled and vertical edges. This embodiment, by designing the second and third cutters as split, sheet-like cutter bodies, facilitates heat treatment and sharpening, simplifies manufacturing, and facilitates tool sharpening and maintenance.

[0033] In this embodiment, a first notch 15 and a second notch 16 are provided in the middle of the body of the first tool 1. The two notches extend straight downward from the position below the tip 13 to the lower part of the body 11, while leaving a certain gap with the bottom of the body 11. The first notch 15 is provided on the front of the body, and the second notch 16 is provided on the back of the body. The two are arranged opposite each other and are not connected to each other. The vertical surface of the tip of the second tool 2 is embedded in the first notch 15, and the vertical surface of the tip of the third tool 3 is embedded in the second notch 16. At the same time, a step 5 is provided at the lower part of the vertical surface of the tip of the second tool 2 and the third tool 3, that is, a right-angled notch is provided. The right-angled notch can be in contact with the bottom surface of the notch, or there can be a gap with the bottom surface of the notch.

[0034] In this embodiment, the second tool 2 and the third tool 3 are each provided with two mounting holes 6 arranged vertically on the side near the vertical surface of the tool tip. The mounting holes 6 are through holes opened on the tool body. The mounting holes in this embodiment are preferably designed as square through holes, the four internal surfaces of which form four inner walls, and threaded holes are provided on the corresponding inner walls to facilitate the installation of bolts. After the second tool 2 and the third tool 3 are respectively inserted into the two notches, the bolt 4 extends from the side wall of the mounting hole of the second tool 2, passes through the threaded holes in the first notch 15 and the second notch 16 of the first tool in sequence, and finally enters the mounting hole 6 of the third tool 3 for threaded fixation. The bolt 4 is built into the mounting hole 6, which is equivalent to being hidden inside the tool so that it does not protrude from the tool surface, thereby effectively avoiding scratches, burrs or foreign matter adhesion caused by the protruding part contacting other objects such as materials, thereby ensuring the smoothness and safety of the tool.

[0035] In this embodiment, when the three cutters are connected into one, a cross-shaped bag-breaking cutter is formed with the tip 11 of the first cutter as the main tip and the blades of the three cutters as multi-faceted blades. This is equivalent to the tips of the second cutter 2 and the third cutter 3 being hidden in the notch of the first cutter 1, leaving only the blades outside. By embedding the tips, it is possible to prevent gaps from forming between the tips and the blades, thereby effectively avoiding burrs or foreign matter caused by the gaps, and ensuring the accuracy and surface quality during the cutting process. Furthermore, compared with the existing method of adjusting the angles of the tips of multiple cutters so that the tips of multiple cutters coincide at one point, this structure of this embodiment has higher matching accuracy and stability, can completely avoid gaps at the tips, and has a higher degree of cleanliness for the material. Moreover, this embedded design avoids errors and instabilities that may occur during the angle adjustment process, thereby improving the overall cutting consistency of the cutter, reducing the generation of burrs and foreign matter, and ensuring better processing quality and longer service life. In addition, the bag breaking knife of this embodiment adopts a multi-faceted blade. On the one hand, it can ensure that the bag breaking knife can cut the surface of the ton bag evenly and accurately through multiple sharp cutting surfaces. On the other hand, the blade on each side is divided into an inclined blade and a vertical blade, thereby forming cutting in different directions, preventing the ton bag from being scratched and bursting when there is no cutting edge to produce foreign matter, ensuring the smoothness of the cutting process and the integrity of the bag body, thereby improving the safety and efficiency of the operation.

[0036] In addition, the multi-faceted blade of this embodiment can be understood as the blade on each side is a multi-faceted blade, that is, it includes an inclined blade 12 and a vertical blade 14; it can also be understood as the four directions of the cross-shaped bag-breaking knife are provided with blades to form a multi-faceted blade.

[0037] In this embodiment, the first tool 1, the second tool 2, and the third tool 3 are also provided with mounting holes 6 at positions below the blades, which are used to fix the entire bag-breaking tool assembly to other platforms or brackets by means of bolts. Since the bag-breaking tool of this embodiment is a cross-shaped bag-breaking tool, that is, the first tool has two blades on both sides, and the second tool and the third tool are connected in the notch to form two other blades perpendicular to the two blades of the first tool, thereby forming a structure similar to a cross. Mounting holes for fixing to other platforms or brackets are provided below each blade, that is, at the four corners of the bag-breaking tool, and threaded holes are provided on the bottom surface of the inner wall of the mounting hole, and the threaded holes penetrate the bottom surface of the tool body, thereby achieving the fixation of the entire bag-breaking tool.

[0038] Example 2

[0039] This embodiment differs from Example 1 in that only two cutting tools are provided, and both have the same structure as the first cutting tool in Example 1. One of the cutting tools has a single, elongated, through-hole notch. The blade of the other cutting tool extends through the notch, with the tip of the blade in the middle vertically embedded in the notch. When connected, the two cutting tools form a cross-shaped bag breaker with the tip of one cutting tool serving as the primary tip and the edges of the two cutting tools serving as multi-faceted edges. The two cutting tools can be bolted together using angle brackets.

[0040] This embodiment allows the tip of a cutting tool to be embedded, thus solving the problem of burrs and foreign matter caused by the gap between the tip and the blade. It also forms a multi-faceted blade, ensuring that the blade cuts through the bag, avoiding the problem of scratches and foreign matter caused by the bag bursting when there is no cutting edge. However, compared with Example 1, this embodiment cannot hide the bolts, and the overall effect is slightly inferior.

[0041] Furthermore, the term "connection" should be interpreted broadly. For example, it can include fixed connection, detachable connection, or integral connection; it can include direct connection, indirect connection through an intermediate medium, and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this application.

[0042] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of such features. Throughout the description of this application, "plurality" means at least two, for example, two, three, etc., unless otherwise specifically defined.

[0043] Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations on the present application. Ordinary technicians in this field can change, modify, replace and modify the above embodiments within the scope of the present application.

Claims

1. An embedded bag breaker assembly, comprising at least two cutters; characterized in that: A cutting tool body is provided with a slot for embedding other cutting tools, the slot extending from a position below the tip of the cutting tool and extending downward to a target position; the tip of the other cutting tools are vertically embedded in the slot of the cutting tool and are detachably connected to the cutting tool, while the blades of all the cutting tools are exposed to the outside.

2. The built-in bag breaker assembly according to claim 1, characterized in that: Each tool body is provided with a mounting hole at a connection node for accommodating a connecting piece, so that the connecting piece can be completely hidden in the tool body.

3. The built-in bag breaker assembly according to claim 2, characterized in that: The bag breaking knife assembly includes a first knife, a second knife and a third knife. The first knife is an integral structure with blades on both sides, and the second knife and the third knife are half-piece structures with blades on one side. The front and back sides of the body of the first knife are respectively provided with a first notch and a second notch, which are arranged opposite to each other and are not connected. The vertical surface of the tip of the second knife is embedded in the first notch, and the vertical surface of the tip of the third knife is embedded in the second notch. The second knife and the third knife are respectively detachably connected to the first knife via the connecting piece.

4. The embedded bag breaker assembly according to claim 3, characterized in that: The connecting member is a bolt, which extends through the side wall of the mounting hole of the second tool or the third tool, passes through the threaded holes in the first notch and the second notch of the first tool, and finally enters the mounting hole of the third tool or the second tool for threaded fixation.

5. The embedded bag breaker assembly according to claim 3, characterized in that: The mounting hole is a through hole opened on the tool body, and an inner wall is provided inside it for cooperating with the installation of the connecting piece; the second tool and the third tool are provided with at least two mounting holes arranged up and down on the side close to the vertical surface of the tool tip, which are used to be connected to the first tool through the connecting piece.

6. The embedded bag breaker assembly according to claim 3, characterized in that: The first cutter, the second cutter and the third cutter are also provided with mounting holes at positions below the cutting edges, which are used to fix the entire bag breaking cutter assembly on other platforms or brackets through connecting pieces.

7. The embedded bag breaker assembly according to claim 3, characterized in that: The lower parts of the vertical surfaces of the tip ends of the second and third cutting tools are provided with steps, which can be adapted to be connected with the corresponding notches.

8. The built-in bag breaker assembly according to claim 3, characterized in that: The first tool includes a body, which is a sheet-like structure. Both sides of the body are beveled to form inclined blades. The inclined blades on both sides converge into a blade tip at the vertex of the body, and the inclined blades extend vertically downward at the end away from the blade tip to form a vertical blade or non-blade surface; the second tool and the third tool are half-sheet structures, and the size of the second tool and the third tool is half of the first tool; after the three tools are connected, a cross-shaped bag breaking tool is formed with the blade tip of the first tool as the main blade tip and the blades of the three tools as multi-faceted blades.

9. The built-in bag breaker assembly according to claim 1, characterized in that: The bag breaking knife assembly includes two knives, both of which are integral structures with blades on both sides. One knife is provided with the notch, which is a long strip through hole. The blade portion on one side of the other knife passes through the notch, and the vertical surface of the knife tip in the middle is embedded in the notch, so that after the two knives are connected, a cross-shaped bag breaking knife is formed with the tip of one knife as the main tip and the blades of the two knives as multi-faceted blades.

10. The built-in bag breaker assembly according to claim 8, characterized in that: The two cutters are fixed with bolts via angle brackets.

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