Automatic bag breaking knife for solid material feeding

Abstract

The automatic bag breaking cutter comprises a base, a stand column and four cutters, the base is arranged in a hopper of a feeding port, the stand column is arranged in the center of the base, four guide grooves are evenly formed in the stand column in the vertical direction, the guide grooves all extend out of the top end of the stand column, and the four cutters are arranged on the stand column. The cutter is inserted into the stand column through the guide groove and attached to the upper surface of the base. The automatic bag breaking machine has the advantages that bags are automatically broken by gravity without manual work or electric work, energy is saved, emission is reduced, and manpower consumption is reduced; the cutter is connected in an inserting mode, all parts are easy to machine and convenient to install, the damaged cutter can be independently replaced when the cutter is damaged, cost is reduced, the guide groove and the clamping groove are connected with the stand column and the base at the same time, reinforcing stability is high, the service life of the cutter is prolonged, and meanwhile safety is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of feeding machinery, in particular to an automatic bag breaking knife used for feeding solid materials. Background Art

[0002] At present, solid materials such as powder or granules are usually packaged in soft bags. During production, the soft bags need to be broken open first, and then the materials inside are placed into the production equipment. Chinese Patent Announcement No.: CN214493637U discloses a gravity bag breaker for unpacking granules or powders, which relates to the technical field of granular or powder packaging, including a bracket and a bag breaker, as well as a silo, a screen, and a discharge valve. The silo is integrally mounted on the bracket, and the bag breaker is arranged in the silo. The bag breaker has a sharpened blade, the screen is arranged below the bag breaker, and the discharge valve is arranged at the discharge port of the silo. By utilizing the gravity of the packaging bag itself, the packaging bag contacts the stationary bag breaker group when it descends, and the sharpened bag breaker group punctures the packaging bag at the bottom of the packaging bag, and the granular or powdery material falls into the silo. However, the above device has the following defects in use:

[0003] 1. The top of the blade is fixed and the bottom is welded or fastened, which makes it difficult to manufacture. At the same time, the operation steps are cumbersome when fixing it with the support pipe group, and if part of it is damaged, it needs to be replaced as a whole, which increases the cost.

[0004] 2. The blade is only fixed by the bottom and the supporting tube assembly. The top pressure is too high and it is easy to break and cause safety accidents, which is not very safe. Utility Model Content

[0005] The technical problem to be solved by the utility model is that the existing bag breaking knife is difficult to manufacture, inconvenient to install and operate, and has a high replacement cost; at the same time, it is easy to be damaged and cause safety accidents. In view of the above problems, an automatic bag breaking knife for solid material feeding is proposed, including a base, a column and four cutting tools. The base is arranged in a hopper at a feeding port, a column is arranged at the center of the base, and four guide grooves are evenly arranged on the column in a vertical direction. The guide grooves all extend from the top of the column, and the cutter is inserted into the column through the guide groove and fits the upper surface of the base.

[0006] The technical solution of the utility model, by setting the structure of the column, when fixing the tool, the two sides thereof can be fixed by the base and the column at the same time, thereby increasing the fixing area and improving the stability, and the column is further reinforced in the vertical direction, and when the top tip of the tool collapses due to excessive pressure, the guide groove of the column can also clamp most of the fragments, reduce the scattering of the tool fragments, and greatly improve the safety; by setting the structure in which the tool and the column are plugged in through the guide groove, the tool is triangular, a guide block is arranged on the tool, and the tools do not need to be fixed, the processing difficulty is reduced, the installation operation is simple, and at the same time, the four tools are fixed by separate guide grooves and clamping grooves, and do not need to be replaced as a whole when damaged, thereby reducing the replacement cost; the guide block plays a guiding role when the tool is installed, and plays a limiting role when the tool is working, thereby preventing the tool from falling off; by setting the structure of the clamping groove on the base, the bottom edge of the tool is further reinforced, the tool is prevented from shaking during use, and the formation of an inclination angle between the tool and the base is avoided, which causes the tool to bend and be damaged, thereby extending the service life of the tool.

[0007] Preferably, the base is made of stainless steel and is in a cross shape. The base is slightly smaller than the size of the upper opening of the hopper. Stainless steel is easy to obtain, the processing method is simple, and the production cost is low. The base is not directly fixed but only placed in the hopper, which is convenient for cleaning and storage after use. It is also convenient for replacing different bases and cutters according to material specifications.

[0008] Preferably, the upper surface of the base is provided with a slot for engaging the bottom edge of the tool. The bottom edge of the tool is engaged in the slot, and the bottom edge will not swing left and right when the tool is working, thereby strengthening fixation, avoiding damage, and extending the service life of the tool.

[0009] The preferred technical solution of the utility model is that the column and the base are an integrated structure, the column is cylindrical, the tool is fixed by clamping with the column, the disassembly and assembly method is simple, and the four tools are independent of each other. When the tool is damaged, there is no need to replace the entire tool, which reduces the cost. The column clamps the tool to strengthen the fixation of the blade. Even if the top of the tool breaks due to excessive pressure, only the tip of the top will be damaged, which greatly improves safety.

[0010] The preferred technical solution of the utility model is that the tool is made of stainless steel and is in the shape of a right-angled triangle. The tool is made of stainless steel, is easy to process and has low cost. The tool is triangular, and the bottom edge is inserted into the slot of the base, and the other right-angled side is inserted into the guide groove of the column. The fixing method is simple and easy to disassemble and assemble. At the same time, the contact area is increased, the stability of the fixation is improved, and the safety is improved. In addition, the four cutters do not need to be fixed, and the processing difficulty is low.

[0011] Preferably, the beveled edge of the tool is the blade, and a guide block is provided on the right-angled edge where the tool fits the column. The guide block plays a guiding role when installing the tool, so that the tool can fall smoothly along the guide groove and its bottom edge can be smoothly inserted into the slot. After the installation is completed, the guide block will also play a limiting role to prevent the tool from shaking and falling off from the guide groove and the slot.

[0012] Compared with the prior art, the utility model has the following beneficial effects:

[0013] 1. The technical solution of the utility model, by setting a column structure, can fix the two sides of the tool at the same time through the base and the column when fixing the tool, thereby increasing the fixing area and improving stability, and the column is further reinforced in the vertical direction. When the top tip of the tool collapses due to excessive pressure, the guide groove of the column can also clamp most of the fragments, reducing the scattering of tool fragments and greatly improving safety.

[0014] 2. The technical solution of the utility model is to set a structure in which the tool and the column are plugged through a guide groove. The tool is triangular and a guide block is set on the tool. The tools do not need to be fixed, which reduces the processing difficulty and makes the installation and operation simple. At the same time, the four tools are fixed by separate guide grooves and card slots. When damaged, they do not need to be replaced as a whole, reducing the replacement cost. The guide block plays a guiding role when the tool is installed and plays a limiting role when the tool is working to prevent the tool from falling off.

[0015] 3. The technical solution of the utility model further reinforces the bottom edge of the tool by providing a slot structure on the base, thereby preventing the tool from shaking during use, avoiding the formation of an inclination angle between the tool and the base that causes the tool to bend and be damaged, and extending the service life of the tool. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a three-dimensional schematic diagram of an automatic bag breaking knife for solid material dosing;

[0017] Figure 2 It is a schematic diagram of an explosion of an automatic bag breaking knife structure for solid material feeding;

[0018] Wherein: 1-base, 11-slot, 2-column, 21-guide groove, 3-knife, 31-blade, 32-guide block. DETAILED DESCRIPTION

[0019] The following will be combined with the attached embodiment of the present utility model Figure 1-2 , the technical solutions in the embodiments of the utility model are described in detail. Example 1

[0020] like Figure 1-2As shown, the utility model is an automatic bag breaking knife for solid material feeding, including a base 1, a column 2 and four cutters 3. The specific specifications of each structure match the specifications of the feeding port hopper. The bag is automatically broken by gravity without manual or electric operation, which saves manpower while saving energy and reducing emissions.

[0021] The base 1 is made of stainless steel and is cross-shaped as a whole. The length of the base 1 needs to be determined according to the specifications of the hopper to ensure that the base 1 can be placed into the hopper from the upper opening of the hopper. The base 1 is not connected and fixed to the hopper. The base 1 is only placed inside the hopper. When it is used up or there is no need to break the bag, it can be taken out as a whole and properly stored.

[0022] The upper surfaces of the four cross-shaped sides of the base 1 are all provided with slots 11 for engaging the tool 3 . The length of the slot 11 is the same as the length of one side of the tool 3 , and the width of the slot 11 matches the thickness of the tool 3 .

[0023] A column 2 is provided at the center of the base 1. The column 2 is cylindrical as a whole. Four guide grooves 21 are evenly arranged on the column 2. The guide grooves 21 penetrate both ends of the column 2 in a vertical direction. The column 2 is fixed to the base 1 by welding or the like to form an integral structure, and the guide grooves 21 of the column 2 are perpendicular to and connected to the card slots 11 on the base 11.

[0024] The clamping groove 11 strengthens the bottom edge of the tool 3 to prevent the tool 3 from shaking left and right, so as to prevent the tool 3 from tilting with the base 1 and then gradually bending during use, causing damage to the tool 3; the guide groove 21 strengthens the fixation of the other right-angled side of the tool 3. Compared with the existing method, the stability of the tool 3 after being fixed is stronger.

[0025] The top tip of the cutter 3 contacts the material bag first. Due to the small contact area and high pressure, it is very easy to break and shatter, which is easy to cause damage. However, since the column 2 fixes and limits the cutter 3 in the vertical direction, only the top tip of the cutter 3 is exposed. Even if the cutter 3 breaks, most of the fragments generated will be limited by the guide groove 21 and remain in place. They will not scatter around and cause harm to others, which greatly improves safety.

[0026] The cutter 3 is in the shape of a right triangle, and the specific angle can be designed according to customer requirements and the height of the hopper to ensure that after the cutter 3 is placed in the hopper, the upper tip of the cutter 3 is higher than the hopper, and one right-angled side of the cutter 3 is inserted into the column 2 from top to bottom through the guide groove 21, and then continues downward until the other right-angled side is inserted into the slot 11 on the base 1, and the cutter 3 is installed. The cutter 3 is made of stainless steel as a whole, and its beveled edge is sharpened to form a blade 31.

[0027] A guide block 32 is provided on the right-angled edge between the tool 3 and the inserted guide groove 21. The limit block 32 is square and larger than the thickness of the tool 3. The guide block 32 and the guide groove 21 match each other. When the tool 3 is installed, the guide block 32 plays a guiding role, so that the tool 3 falls smoothly; when the tool 3 is working, the guide block 32 plays a limiting role, preventing the tool from slipping out of the guide groove 32 and falling off.

[0028] The four cutters 3 do not need to be fixed together, but are individual units, which are easy to process and produce in batches. At the same time, they are flat in shape and easy to disassemble, store and preserve. Of course, each cutter 3 can also be simply fixed to the base 1, such as by screw fixation, which requires opening a bolt hole at the corresponding position of the cutter 3.

[0029] Furthermore, the acute angle at which the tool 3 and the base 1 fit together can be extended outward in the horizontal direction to form a fixed clamp block, which protrudes from the upper surface of the base 1. The fixed clamp block is clamped by an "Ω"-shaped spring clip, and then the spring clip is fixedly connected to the base 1 by bolts on both sides of the spring clip, thereby fixing the tool 3 to the base 1.

[0030] After the cutter 3 and the base 1 are simply fixed, the device as a whole is more stable, but relatively speaking, the installation is a bit cumbersome. In actual use, you can choose whether to fix the cutter 3 and the base 1 and what specific fixing method to use according to your needs.

[0031] After all four cutters 3 are installed, all their top tips are close to each other, the force area is small and the pressure is strong when breaking the bag, so the material bag can be pierced smoothly, and then the material bag is gradually cut open along the pierced opening, the opening is expanded, and the material in the material bag can quickly fall from the hopper.

[0032] The base 1, column 2 and blade 3 are all made of stainless steel, which is easy to obtain and has low processing difficulty. The overall production cost is low. The blades 3 are independent of each other, and the installation is simple and convenient. They can be replaced individually after damage without overall replacement, which reduces replacement costs.

[0033] The method of using the automatic bag breaking knife for solid material addition in this embodiment is as follows:

[0034] Place the bottom edge of the cutter 3 downward, align the guide block 32 with the guide groove 21 of the column 2, insert the cutter 3 on the column 2, and make the bottom edge of the cutter 3 snap into the slot 11 of the base 1. After installing four cutters 3 in sequence, place the cutter 3 upward, and place the base 1 together with the cutter 3 in the hopper.

[0035] The material bag is put into the hopper by a forklift or other tool. The material bag is naturally pulled downward by gravity and contacts the top tip of the cutter 3. Due to the small force area and high pressure, the tip will pierce the material bag, and then the material bag continues to move downward under the action of gravity, and the blade 31 gradually cuts the material bag along the rupture, so that all the materials fall out of the bag and enter the equipment along the hopper to complete the subsequent process. The larger the material bag, the greater the material mass, the greater the pressure generated, the larger the opening of the material bag cut by the cutter 3, and the faster the material falls. When all the materials fall, the material bag is taken out and placed aside, and other material bags are continued to be put in. When the work is completed, the base 1 is taken out together with the cutter 3, and the cutter 3 is removed from the base 1 and properly stored to prevent the cutter 3 from accidentally injuring others. At the same time, the base 1 is saved for next use. During use, when individual cutters 3 are damaged, only the damaged cutter 3 needs to be removed and a new cutter 3 can be reinstalled to continue to be put into use.

[0036] The above embodiments are only for illustrating the technical idea of ​​the present utility model, and cannot be used to limit the protection scope of the present utility model. Any changes made on the basis of the technical solution in accordance with the technical idea proposed by the present utility model shall fall within the protection scope of the present utility model.

Claims

1. An automatic bag breaking knife for solid material feeding, characterized by: The invention comprises a base (1), a column (2) and four cutters (3), wherein the base (1) is arranged in a hopper at a feeding port, a column (2) is arranged at the center of the base (1), four guide grooves (21) are evenly arranged on the column (2) along a vertical direction, the guide grooves (21) all extend out of the top of the column (2), and the cutters (3) are inserted into the column (2) through the guide grooves (21) and fit with the upper surface of the base (1).

2. The automatic bag breaking knife for solid material feeding according to claim 1, characterized in that: The base (1) is made of stainless steel and is in a cross shape. The base (1) is slightly smaller than the size of the upper opening of the hopper.

3. The automatic bag breaking knife for solid material feeding according to claim 1, characterized in that: The upper surface of the base (1) is provided with a slot (11) for engaging the bottom edge of the cutter (3).

4. The automatic bag breaking knife for solid material feeding according to claim 1, characterized in that: The upright column (2) and the base (1) are an integral structure, and the upright column (2) is cylindrical.

5. The automatic bag breaking knife for solid material feeding according to claim 1, characterized in that: The knife (3) is made of stainless steel and is in the shape of a right triangle.

6. The automatic bag breaking knife for solid material feeding according to claim 4, characterized in that: The beveled edge of the tool (3) is a blade (31), and a guide block (32) is provided at the right-angled edge where the tool (3) and the column (2) are in contact.

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