Double-layer ton bag bag opening machine and bag opening method

Abstract

The present invention relates to a bag opening machine and bag opening method for double-layer ton bags, which are suitable for ton bags with inner and outer two-layer structures; the bag opening machine includes a box body, a bag mouth clamping assembly is arranged on the top of the box body, a tank body is arranged in the box body, and a secondary sealing assembly is arranged at the mouth of the tank body, the bag mouth clamping assembly includes a clamp group and an iris valve arranged in the vertical direction, and the secondary sealing assembly includes an air seal tightened on the inner wall of the tank body and a clamp fastened to the mouth of the tank body. The present invention is particularly suitable for opening double-layer ton bags, and adopts a bag mouth clamping assembly located at the positioning tube and a secondary sealing assembly located at the mouth of the tank body, wherein the bag mouth clamping assembly is used to clamp the outer bag, and the secondary sealing assembly adopts a fewer number of bends according to the harder characteristics of the inner bag, and realizes sealing and limiting by tightening the inner and outer walls of the tank. The present invention is different from the commonly used single-layer ton bag sealing structure and the soft material ton bag sealing structure, and it is not easy to cause local damage to the inner bag during the clamping process, thereby ensuring no leakage.

Description

Technical Field

[0001] The invention relates to the technical field of bag opening machines, in particular to a bag opening machine and a bag opening method for double-layer ton bags. Background Art

[0002] In the fields of chemical industry, lithium battery, etc., sealed ton bags are often used to transport raw material powder, so ton bag unpacking equipment is needed. In order to prevent the dust from spilling out during the bag opening process, which may cause damage to personnel health and environmental impact, the anti-leakage operation requirements during the bag opening process are relatively high. The anti-leakage effect of common large bag unpacking machines is not very good. For some materials with small particle size and light specific gravity, there is still a risk of residual material leakage during the bag changing operation.

[0003] In particular, ton bags also have various specifications, such as single-layer ton bags, double-layer ton bags, etc. Ton bags with different numbers of layers and different materials are difficult to be opened with the same specification of the bag opener due to factors such as hardness. Summary of the invention

[0004] In view of the shortcomings in the above-mentioned existing production technology, the applicant provides a double-layer ton bag opening machine and opening method with a reasonable structure, which is particularly suitable for the opening process of double-layer ton bags. The outer ton bag and the inner ton bag are sealed respectively by utilizing the sealing structures at the mouth of the box body and the internal tank body, thereby reducing leakage to meet the relevant dust leakage requirements of the national standard.

[0005] The technical solution adopted by the present invention is as follows:

[0006] A double-layer ton bag bag opener is suitable for ton bags with inner and outer two-layer structures; the bag opener comprises a box body, a bag opening clamping assembly is arranged on the top of the box body, a tank body is arranged in the box body, and a secondary sealing assembly is arranged at the mouth of the tank body.

[0007] The bag opening clamping assembly includes a clamp group and an iris valve arranged in a vertical direction.

[0008] The secondary sealing assembly comprises a gas sealing member expanded and tightened on the inner wall of the tank body and a clamp fastened on the mouth of the tank body.

[0009] As a further improvement of the above technical solution:

[0010] The clamp group, the iris valve, the air sealing element and the clamp operate independently of each other.

[0011] A bag opening method using a double-layer ton bag opening machine comprises the following steps:

[0012] The mouth of the double-layer ton bag is tied tightly with a rope, leaving the edge of the ton bag; the clamp group clamps the outer edge of the double-layer ton bag, and the inner edge of the double-layer ton bag is not restricted and is located above the iris valve in the closed state;

[0013] Open the iris valve, the operator reaches into the glove box, pulls down the inner bag of the ton bag, and cuts the tail end of the inner bag, leaving the inner bag open at the tail end. At this time, the knotted position of the inner bag and the outer bag still prevents the powder from falling;

[0014] Pull down the edge of the inner bag, pass it through the middle of the air seal, and go around the lower part of the circumference of the air seal to the clamp. The air seal will inflate the inner bag and the clamp will clamp the inner bag.

[0015] Open the knot of the ton bag and the powder falls into the tank;

[0016] After unloading, close the iris valve first and clamp the inner bag. At this time, the inner bag is in a deflated state.

[0017] Open the clamp, deflate the airtight seal, and loosen the edge of the inner bag;

[0018] Manually reach into the glove box to organize the inner pockets;

[0019] Open the iris valve, push the trimmed inner bag upward into the outer bag, tie the knot again, and then close the iris valve. At this time, only the outer bag is clamped and limited by the clamp assembly;

[0020] Tie another knot at the mouth of the ton bag. The new knot will seal the inner bag in the outer bag. Cut between the new knot and the original knot and remove the closed outer bag with the new knot.

[0021] At this time, only the outer bag edge of the original ton bag is left, and the unloading is completed; you can pause at this time, or continue to clamp the new ton bag for unloading.

[0022] As a further improvement of the above technical solution:

[0023] When manually reaching into the glove box to arrange the inner bag, the hard inner bag opening is folded over to shape and seal.

[0024] After the tidied inner bag is pushed into the outer bag, the knot tied again on the outer bag closes the inner bag in the outer bag.

[0025] The bag changing process includes the following steps:

[0026] The outer bag edge of the original ton bag is clamped by the clamp group, which includes a first clamp located at the top and a second clamp located at the bottom. The first clamp is first loosened, and the second clamp still clamps the outer bag of the original ton bag; the outer bag edge of the new ton bag is sent between the first clamp and the outer wall of the positioning tube, and the first clamp clamps the outer bag of the new ton bag;

[0027] Loosen the second clamp, and the original ton bag loses the limiting force of the second clamp;

[0028] The second clamp clamps the outer bag edge of the new ton bag, and the outer bag edge of the original ton bag is now separated from the second clamp;

[0029] The first clamp is loosened, and the limiting force on the outer bag edge of the original ton bag is removed. At this time, the original ton bag is completely free, and the iris valve remains closed, and the original ton bag is located in the positioning tube;

[0030] The iris valve is opened and the edge of the original ton bag in the positioning tube is taken out of the glove box;

[0031] The first clamp and the second clamp clamp the outer bag edge of the new ton bag to prepare for unloading of the new ton bag.

[0032] During the replacement of new ton bags, the airtight seal and the clamp are in a closed and sealed state.

[0033] The beneficial effects of the present invention are as follows:

[0034] The present invention has a compact and reasonable structure and is easy to operate, and is particularly suitable for the unpacking process of double-layer ton bags. The present invention provides two sets of independent sealing components, namely, a bag mouth clamping component located at the positioning tube and a secondary sealing component located at the mouth of the tank body, wherein the bag mouth clamping component is used to clamp the outer bag, and the secondary sealing component clamps the inner bag. If the inner bag is made of a harder material, the present invention uses fewer bends and uses the inner and outer walls of the tank to tighten to achieve sealing and limiting, ensuring that the hard inner bag will not be fatigued and damaged due to multiple or excessive bends;

[0035] The first clamp, the second clamp and the iris valve of the bag mouth clamping assembly are closed alternately, so as to achieve the purpose of partial limit at the same time of sealing, so as to provide a gap for switching between new and old ton bags while sealing and limiting;

[0036] In the unloading process of the present invention, both the inner bag and the outer bag are sealed; when unloading of one ton bag is completed, it can be switched to another ton bag without leakage, thereby ensuring the cleanliness of the operating environment.

[0037] The present invention is different from the commonly used single-layer ton bag sealing structure and the soft material ton bag sealing structure. It is not easy to cause local damage to the inner bag during the clamping process, thereby ensuring no leakage. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] Figure 1 It is a flowchart of the present invention.

[0039] Figure 2 It is a schematic diagram of the initial state before blanking of the present invention.

[0040] Figure 3 It is a schematic diagram of opening the iris valve in the steps of the present invention.

[0041] Figure 4This is a schematic diagram of the inner bag in the pre-opened state of the present invention.

[0042] Figure 5 It is a schematic diagram of the structure of the inner bag of the present invention being sealed to the can body.

[0043] Figure 6 It is a schematic diagram of the unloading state after the inner bag of the present invention is sealed.

[0044] Figure 7 This is a schematic diagram of the state in which the material discharge is completed and the iris valve is closed according to the present invention.

[0045] Figure 8 This is a schematic diagram of folding the inner bag of the present invention.

[0046] Fig. 9 This is a schematic diagram of the inner bag of the present invention.

[0047] Fig.10 This is a schematic diagram of the state in which the inner bag is put into the outer bag according to the present invention.

[0048] Fig.11 It is a schematic diagram of the state of tying a knot and cutting the outer bag of the present invention.

[0049] Fig.12 It is a schematic diagram of the state when the new ton bag and the original ton bag of the present invention are replaced.

[0050] Fig.13 It is a schematic diagram of the state in which the limiting force of the second clamp on the original ton bag is removed in the present invention.

[0051] Fig.14 It is a schematic diagram of the state of clamping a new ton bag in the present invention.

[0052] Fig.15 It is a schematic diagram of the state in which the original ton bag is removed in the present invention.

[0053] Among them: 1. Glove box; 2. Sealing tank; 3. Bag opening clamping assembly; 4. Secondary sealing assembly;

[0054] 101, positioning tube;

[0055] 301, first clamp; 302, second clamp; 303, iris valve;

[0056] 401. Air sealing member; 402. Clamp. DETAILED DESCRIPTION

[0057] The specific implementation of the present invention will be described below in conjunction with the accompanying drawings.

[0058] like Figure 1-Figure 15As shown, the double-layer ton bag opening machine of this embodiment is suitable for ton bags with inner and outer two-layer structures; the opening machine comprises a box body, a bag opening clamping assembly 3 is arranged on the top of the box body, a tank body 2 is arranged in the box body, and a secondary sealing assembly 4 is arranged at the mouth of the tank body 2.

[0059] The bag opening clamping assembly 3 includes a clamp assembly and an iris valve 303 arranged in the vertical direction.

[0060] The secondary sealing assembly 4 includes a gas sealing member 401 expanded and tightened on the inner wall of the tank body 2 and a clamp 402 fastened to the mouth of the tank body 2 .

[0061] The clamp assembly, the iris valve 303, the air seal 401 and the clamp 402 operate independently of each other.

[0062] The bag opening method using the double-layer ton bag opening machine of this embodiment includes the following steps:

[0063] The mouth of the double-layer ton bag is tied tightly with a rope, leaving the edge of the ton bag; the clamp assembly clamps the outer edge of the double-layer ton bag, and the inner edge of the double-layer ton bag is not restricted and is located above the iris valve 303 in the closed state;

[0064] Open the iris valve 303, the operator reaches into the glove box 1, pulls down the inner bag of the ton bag, and cuts the tail end of the inner bag, so that the tail end of the inner bag is open. At this time, the knotted position of the inner bag and the outer bag still prevents the powder from falling.

[0065] Pull down the edge of the inner bag, pass it through the middle of the air seal 401, and go around the hoop 402 below the circumference of the air seal 401. The air seal 401 is inflated to tighten the inner bag, and the hoop 402 clamps the inner bag.

[0066] Open the knot of the ton bag, and the powder falls into the tank 2;

[0067] After the material is unloaded, the iris valve 303 is closed first to clamp the inner bag, and the inner bag is in a deflated state;

[0068] Open the clamp 402, deflate the airtight seal 401, and loosen the edge of the inner bag;

[0069] Manually reach into the glove box 1 to organize the inner bag;

[0070] Open the iris valve 303, push the trimmed inner bag upward into the outer bag, tie the knot again, and then close the iris valve 303. At this time, only the outer bag is clamped and limited by the clamp assembly.

[0071] Tie another knot at the mouth of the ton bag. The new knot will seal the inner bag in the outer bag. Cut between the new knot and the original knot and remove the closed outer bag with the new knot.

[0072] At this time, only the outer bag edge of the original ton bag is left, and one unloading is completed; at this time, you can stop unloading, or you can continue to replace it with a new ton bag and prepare to unload again.

[0073] In the above process, when manually reaching into the glove box 1 to arrange the inner bag, the inner bag opening with hardness is folded and shaped to be closed.

[0074] After the tidied inner bag is pushed into the outer bag, the knot tied again on the outer bag closes the inner bag in the outer bag.

[0075] The bag changing process includes the following steps:

[0076] The outer bag edge of the original ton bag is clamped by the clamp group, which includes a first clamp 301 located at the top and a second clamp 302 located at the bottom. First, the first clamp 301 is loosened, and the second clamp 302 still clamps the outer bag of the original ton bag; the outer bag edge of the new ton bag is sent between the first clamp 301 and the outer wall of the positioning tube 101, and the first clamp 301 clamps the outer bag of the new ton bag;

[0077] The second clamp 302 is loosened, and the limiting force of the second clamp 302 is lost on the original ton bag;

[0078] The second clamp 302 clamps the outer bag edge of the new ton bag, and the outer bag edge of the original ton bag is now separated from the second clamp 302;

[0079] The first clamp 301 is loosened, and the limiting force on the outer bag edge of the original ton bag is removed. At this time, the original ton bag is completely free, and the iris valve 303 is always kept closed, and the original ton bag is located in the positioning tube 101;

[0080] The iris valve 303 is opened, and the edge of the original ton bag in the positioning tube 101 is taken out of the glove box 1;

[0081] The first clamp 301 and the second clamp 302 clamp the outer bag edge of the new ton bag to prepare for unloading of the new ton bag.

[0082] During the bag changing operation, the air seal 401 and the clamp 402 are not in operation, and the tank body is in an open state. The continuous negative pressure inside the glove box and the tank body is relied on to ensure that there is no dust spillage.

[0083] The specific structure and working process of the present invention are as follows:

[0084] The present invention is a bag opener specially designed for the bag opening process of double-layer ton bags, with the purpose of preventing dust from spilling out, especially in the process of switching between new and old ton bags, it is necessary to ensure that both the new ton bags and the original ton bags are not prone to dust leakage, and considering that the inner bag of the double-layer ton bag may be a soft bag or a hard bag made of materials such as aluminum foil with a certain hardness, the present invention designs a special bag opener that can seal and clamp both soft bags and hard bags.

[0085] like Figure 2 As shown, this is the preparation state of the bag opener. At this time, except for the clamp holding the ton bag, all the sealing structures are in the initial state.

[0086] In order to facilitate packaging, ton bags are usually placed in the packaging position, i.e. Figure 2 The knot in the middle has a reserved edge, and the edge of the outer bag is limited and clamped by the first clamp 301 and the second clamp 302 , while the inner bag is temporarily not clamped and is located in the area surrounded by the iris valve 303 and the positioning tube 101 .

[0087] At this time, the first clamp 301, the second clamp 302, and the iris valve 303 are in a closed state; the air seal 401 and the clamp 402 located at the mouth of the tank body 2 are in a closed state. In order to facilitate the cooperation with the mouth of the tank body 2, the air seal 401 includes an annular top plate, which has a shape and hardness and can be placed at the mouth of the tank body 2; below the top plate is an elastic air seal body, which swells when inflated and is pressed against the inner wall of the mouth of the tank body 2.

[0088] The glove box 1 of the present invention is provided with a glove position, which is convenient for workers to put their hands in to sort out the ton bags. Since the glove box 1 is a conventional technical means, it will not be described in detail in this embodiment.

[0089] like Figure 3 As shown, the material has been prepared. The inner bag is usually outside the knot and has a hot-pressed package at the mouth. The iris valve 303 is opened so that the seal of the inner bag is located above the can body 2. At this time, the airtight seal 401 is not inflated and is ready to accommodate the inner bag.

[0090] like Figure 4 and Figure 5 As shown, cut open the aluminum foil seal of the inner bag, pull the inner bag down, make the inner bag pass through the middle of the airtight seal 401, then pull the edge of the inner bag to the bottom of the airtight seal, go around the airtight seal, go around the edge of the mouth of the tank 2, and pass through the clamp 402, forming a horizontal "S" shape that goes around the clamp 402 and the airtight seal 401. The airtight seal is inflated and tightened, pressing the inner bag against the inner wall of the tank 2; the clamp 402 clamps the inner bag against the outer wall of the tank 2.

[0091] like Figure 6 As shown, the knot is opened and the powder in the inner bag falls into the tank body 2.

[0092] like Figure 7 As shown in FIG. 1 , after the blanking is completed, the iris valve 303 is first closed, and the iris valve 303 clamps the inner bag; then Figure 8 As shown, the clamp 402 is opened, the tightening force of the air seal 401 is removed, and the inner bag is retracted from the mouth of the tank body 2. At this time, the worker reaches into the glove box 1, as shown in FIG. Fig. 9As shown, the inner bag with a certain hardness is arranged. The arrangement method can be folded at the mouth, rolled up, etc., the purpose is to close the inner bag so that no dust inside falls out.

[0093] Open the iris valve 303, such as Fig.10 As shown, the arranged inner bag is pushed up into the outer bag, and then the outer bag is tied so that the inner bag is contained in the outer bag. The iris valve 303 is closed again. Fig.10 The middle is a schematic diagram of the state where the knotting is completed and the iris valve 303 is closed.

[0094] like Fig.11 As shown, a knot is tied on the basis of the already knotted ton bag, a shearing position is reserved between the two knots, and the outer bag is cut off between the two knots. At this time, the inner bag is received in the outer bag with a knot; the edge of the outer bag has a knot and is clamped by the first clamp 301 and the second clamp 302. At this point, the unloading process of the first ton bag is completed.

[0095] like Figure 12-Figure 15 The figure shows the process of connecting the second ton bag with the remaining outer bag edge of the first ton bag. Fig.12 The figure shows the state where the outer bag edge of the new ton bag is clamped by the first clamp 301. The outer bag edge of the new ton bag is first clamped by the first clamp 301, and the second clamp 302 remains stationary and still clamps the outer bag of the original ton bag. At this time, the outer bag of the new ton bag is clamped by the first clamp 301, and the outer bag of the original ton bag is clamped by the first clamp 301 and the second clamp 302.

[0096] like Fig.13 As shown, the second clamp 302 is loosened, the original ton bag is detached from the second clamp 302, and the first clamp 301 still clamps the original ton bag and the new ton bag;

[0097] like Fig.14 As shown, the second clamp 302 clamps the new ton bag, but be careful not to clamp the original ton bag; at this time, the first clamp 301 clamps the new ton bag and the original ton bag, and the second clamp 302 clamps the new ton bag;

[0098] like Fig.15 As shown, the second clamp 302 does not move, the first clamp 301 is loosened, and the worker reaches into the glove box 1 to take away the original ton bag; the first clamp 301 is clamped again, and at this time, the first clamp 301 and the second clamp 302 clamp the new ton bag, and the new ton bag is in place, as shown in FIG. Figure 1 In the middle state, you can prepare for unloading new ton bags.

[0099] It should be noted that the clamps, hoop and gas seal mentioned in the present invention only play the role of fastening and sealing in the process. Therefore, in theory, any fastener that has the function of fastening and sealing can be used in the technical solution proposed by the present invention as a replacement implementation. The operation of simply replacing the clamps, hoop and gas seal still falls within the scope of the technical solution of the present invention.

[0100] The present invention limits the outer bag and the inner bag separately based on the actual situation that the inner bag of the double-layer ton bag has high hardness and is not suitable for multiple folding and deformation limiting. At the same time, it provides a material unloading process method in which no dust overflow occurs between connections and steps, thereby solving the problem of easy leakage of powder in the double-layer ton bag.

[0101] The above description is an explanation of the present invention, not a limitation of the present invention. The scope of the present invention is defined in the claims. Any form of modification may be made within the scope of protection of the present invention.

Claims

1. A bag opening method for a double-layer ton bag opening machine, characterized in that: The bag opening machine is suitable for ton bags with an inner and outer double-layer structure and a hard bag as the inner bag. The bag opening machine comprises a box body, a bag opening clamping assembly (3) is arranged on the top of the box body, a tank body (2) is arranged in the box body, and a secondary sealing assembly (4) is arranged at the mouth of the tank body (2). The bag opening clamping assembly (3) comprises a clamp assembly and an iris valve (303) arranged in a vertical direction. The secondary sealing assembly (4) comprises a gas sealing member (401) expanded and tightened on the inner wall of the tank body (2) and a clamp (402) fastened to the mouth of the tank body (2); The method for opening a double-layer ton bag with a bag opening machine includes the following steps: The bag mouth of the double-layer ton bag is tied tightly with a rope, leaving the edge of the ton bag; the clamp assembly clamps the outer edge of the double-layer ton bag, and the inner edge of the double-layer ton bag is not restricted and is located above the iris valve (303) in the closed state; The iris valve (303) is opened, and the operator reaches into the glove box (1), pulls down the inner bag of the ton bag, and cuts the tail end of the inner bag so that the tail end of the inner bag is open. At this time, the knotted position of the inner bag and the outer bag still prevents the powder from falling. The edge of the inner bag is pulled down, passed through the middle of the air seal (401), and passed under the circumference of the air seal (401) to the clamp (402), the air seal (401) is inflated to tighten the inner bag, and the clamp (402) clamps the inner bag; The knot of the ton bag is opened, and the powder falls into the tank (2); After unloading, the iris valve (303) is closed first to clamp the inner bag. At this time, the ton bag is deflated. Open the clamp (402), deflate the airtight seal (401), and loosen the edge of the inner bag; Manually reaching into the glove box (1) to arrange the inner bag; Open the iris valve (303), push the arranged inner bag upward into the outer bag, tie the knot again, and then close the iris valve (303), at this time, only the outer bag is clamped and limited by the clamp assembly; Tie another knot at the mouth of the ton bag. The new knot will seal the inner bag in the outer bag. Cut between the new knot and the original knot and remove the closed outer bag with the new knot. At this time, only the outer bag edge of the original ton bag is left, and the unloading is completed.

2. The method for opening a double-layer ton bag using a bag opening machine according to claim 1, characterized in that: The clamp assembly, the iris valve (303), the air sealing member (401), and the clamp (402) operate independently of each other.

3. The method for opening a bag using a double-layer ton bag opening machine as claimed in claim 2, characterized in that: When manually reaching into the glove box (1) to arrange the inner bag, the inner bag opening with hardness is folded over to be shaped and sealed.

4. The method for opening a bag using a double-layer ton bag opening machine as claimed in claim 3, characterized in that: After the tidied inner bag is pushed into the outer bag, the knot tied again on the outer bag closes the inner bag in the outer bag.

5. The method for opening a bag using a double-layer ton bag opening machine according to claim 4, characterized in that: The bag changing process includes the following steps: The outer bag edge of the original ton bag is clamped by a clamp group, which includes a first clamp (301) located at the top and a second clamp (302) located at the bottom. The first clamp (301) is first loosened, and the second clamp (302) still clamps the outer bag of the original ton bag. The outer bag edge of the new ton bag is sent between the first clamp (301) and the outer wall of the positioning tube (101), and the first clamp (301) clamps the outer bag of the new ton bag. The second clamp (302) is loosened, and the original ton bag loses the limiting force of the second clamp (302); The second clamp (302) clamps the outer bag edge of the new ton bag, and the outer bag edge of the original ton bag is now separated from the second clamp (302); The first clamp (301) is loosened to remove the limiting force on the outer bag edge of the original ton bag. At this time, the original ton bag is completely free, and the iris valve (303) is always kept in a closed state, and the original ton bag is located in the positioning tube (101); The iris valve (303) is opened, and the edge of the original ton bag in the positioning tube (101) is taken out of the glove box (1); The first clamp (301) and the second clamp (302) clamp the outer bag edge of the new ton bag to prepare for unloading of the new ton bag.

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