Design method for preventing packaging barrel from being polluted by recycled material box

Abstract

The design method for preventing the recycled material box from polluting the packaging barrel comprises the steps that the front end of a cushion block is designed to be cylindrical, so that after the recycled material box is downwards jacked open by the bottom of a material gun, the cylindrical surface of the cushion block is kept to be attached to and tangent to the outer wall of the material gun while the cushion block overturns downwards around an overturning shaft, and the cylindrical surface of the cushion block is kept to be tangent to the outer wall of the material gun; according to the design method, the front end of the cushion block is designed to be the cylindrical surface, so that the cushion block is in continuous contact with the outer wall of the material gun, and the outer wall of the material gun cannot be scratched when the cushion block is in contact with the outer wall of the material gun; according to the technical scheme, the optimal length of the portion, extending out of the cushion block, of the front end of the recycling material box and the position relation between the recycling material box and the barrel opening are determined according to the structural parameters such as the overturning shaft of the recycling material box, materials cannot drop on the outer side of the barrel opening of the packaging barrel in the dumping process of the recycling material box, contact friction between the recycling material box and the outer wall of the material gun cannot be formed, and therefore the material gun is protected.

Description

Technical Field

[0001] This invention relates to the field of filling machines, and in particular to a design method for recycling material boxes to prevent contamination of packaging barrels. Background Technology

[0002] Existing filling machines primarily use filling guns to fill packaging barrels. Typically, the filling gun has a valve block at the bottom, controlled by a valve stem at the top. To increase filling efficiency, the flow rate of the filling gun needs to be increased, causing the material to spray out in an umbrella-like pattern from the valve head. During the filling process, to prevent material from scattering outside the packaging barrel, the filling gun is usually inserted downwards from the top opening of the barrel. As filling progresses, the liquid level inside the barrel continuously rises, requiring real-time control of the filling gun's movement. Only after the barrel is filled is the valve block at the bottom of the gun closed, and the gun is then pulled out of the barrel.

[0003] After removing the dispensing gun, the lid of the packaging drum needs to be fastened to the drum opening, while the dispensing gun remains above the drum opening. Since material may also be present on the valve block, it will drip down onto the drum lid and the top cover of the packaging drum, causing filling contamination.

[0004] The current common solution is to use a material recycling bin. However, this bin also flips as the feed gun descends, and if not properly controlled, the material may splash onto the outside of the container opening instead of into it. Furthermore, because the recycling bin is made of metal, it can scratch the feed gun's tube wall. Therefore, how to ensure the recycling bin accurately enters the packaging container during tilting is the technical problem this invention aims to solve. Summary of the Invention

[0005] The technical problem to be solved by the embodiments of the present invention is to provide a design method for a recycling box to prevent contamination of the packaging barrel, and to solve the problem of how to control the recycling box to accurately enter the packaging barrel when it is poured.

[0006] To address the aforementioned technical problems, this invention provides a design method for a recyclable material box to prevent contamination of packaging containers, comprising:

[0007] The recycling box is placed inside a suction hood with a nozzle at the top. The recycling box can rotate downwards around the rotating axis within the suction hood until the nozzle is filled. A horizontally arranged pad is placed inside the recycling box. When the recycling box is horizontal, the front end of the pad extends beyond the center line of the nozzle. The front end of the pad is designed to be cylindrical, so that after the recycling box is pushed open downwards by the bottom of the nozzle, the cylindrical surface of the pad remains in contact with and tangent to the outer wall of the nozzle as it rotates downwards around the rotating axis. At this point, the length D of the front end of the recycling box exceeding the front end of the pad is ensured so that the front end of the recycling box does not contact the outer wall of the nozzle as the nozzle continues to descend.

[0008] Based on the state of the recovery box when the pad block is tangent to the outer wall of the material gun, draw the intersection diagram of the key node connection lines of the recovery box and their extension lines with the outer wall of the material gun. Determine the location of the recovery box from the diagram.

[0009] (1), (x1+d2+R): (x4+R+L1)=x2:x3;

[0010] (2) x1:x2=d1:R;

[0011] (3), x3=tan(arc cos(R / x2));

[0012] (4), (x1+d2): (x1+d2+R)=(x3+L1): (L1+R+x4);

[0013] From the four parameters x1, x2, x3, x4 in the above four proportions, x4;

[0014] Then determine the length D based on x4;

[0015] Then verify the length D. When the recycling box is flipped to the material gun filling state, determine the distance W between the recycling box and the bottom of the suction hood, so that W is greater than the height H of the barrel opening, but less than H+4mm, thereby determining the height of the suction hood.

[0016] The determination of length D based on x4 includes: taking x5≤D<x4, where x5 is the larger of (x4-2mm) and 0.95*x4.

[0017] O1: The axis of the flip shaft;

[0018] O2: The rotation center at the rear end of the pad;

[0019] O3: The center of the cylinder at the front end of the pad;

[0020] R: The radius of the cylinder at the front end of the pad block;

[0021] d1: Horizontal distance between O1 and the wall of the material gun tube;

[0022] d2: Distance between O1 and O2;

[0023] x1: The distance between O1 on the O2O1 extension line and the wall of the material gun tube when the recycling box is flipped over;

[0024] x2: The distance from O3 to the wall of the material gun tube, along the parallel line of O1O2 passing through O3;

[0025] x3: The distance between O3 on the O2O3 extension line and the wall of the material gun tube when the recycling box is flipped;

[0026] x4: The front end of the recycling bin exceeds the maximum length limit of the pad block;

[0027] D: The front end of the recycling box extends beyond the actual length of the pad block;

[0028] The bottom surface of the recycling box is V-shaped and has an inclined structure that is higher in the front and lower in the back.

[0029] When the recycling bin is in a horizontal position, O2 is directly below O1, and O3 is directly in front of O2 (because the pads are arranged horizontally).

[0030] When the recycling box is in a horizontal position, O2 is not directly below O1. The intersection of the horizontal extension of O2O3 and the perpendicular line passing through O3 is used as the virtual rotation center O2'. Then, O2' is used instead of O2 as the base point for calculation.

[0031] The bottom edge of the suction hood is flush with the ground and directly below the material gun hole. No other structure is designed except for the recycling box.

[0032] A base plate is provided at the bottom of the suction hood, directly below the recycling box.

[0033] The bottom plate has an upward folded edge near the material gun hole, which forms a groove structure between the bottom plate and the surrounding side plates.

[0034] The bottom surface of the base plate is flat and flush with the bottom edge of the suction hood.

[0035] The side plate is provided with an air intake; the front end of the bottom plate is provided with a transparent cover that can be flipped open, and the transparent cover is sealed to the side plate of the air intake hood.

[0036] The design method of the recycling bin to prevent contamination of the packaging barrel provided by this invention features a cylindrical front end of the pad, which ensures continuous contact with the outer wall of the material gun and prevents scratches on the outer wall. The optimal length of the recycling bin's front end extending beyond the pad and the positional relationship between the recycling bin and the barrel opening are determined by structural parameters such as the recycling bin's flipping shaft. This prevents material from dripping onto the outside of the packaging barrel opening during the tilting process and also prevents the recycling bin from contacting and rubbing against the outer wall of the material gun, thus protecting the material gun. Attached Figure Description

[0037] Figure 1 This is a schematic diagram of the suction hood and its internal recycling bin in the non-working state.

[0038] Figure 2 This is a top view of the suction hood and its internal recycling bin in a non-operating state.

[0039] Figure 3 This is a schematic diagram of the suction hood and its internal recycling bin in operation.

[0040] Figure 4 for Figure 3 A schematic diagram of the linearized structure of key nodes in the diagram.

[0041] Figure 5 This is a schematic diagram of the structure of the recycling bin and the bottom edge of the suction hood (i.e., the top surface of the packaging barrel) when the recycling bin is flipped to the filling state.

[0042] In the picture:

[0043] 1. Suction hood; 11. Material gun hole; 12. Tilting shaft; 13. Base plate; 13a. Folded edge; 14. Side plate; 15. Transparent cover plate;

[0044] 2. Feed gun;

[0045] 3. Recycling bin; 31. Bottom surface;

[0046] 4. Spacer blocks;

[0047] 5. The opening of the packaging barrel. Detailed Implementation

[0048] To make the above-mentioned objects, features, and advantages of the present invention more apparent and understandable, specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of the present invention. However, the present invention can be practiced in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0049] like Figure 1-4 As shown, the present invention provides a design method for a recyclable material box to prevent contamination of packaging barrels, comprising:

[0050] The recycling box 3 is placed inside the suction hood 1 with the material gun hole 11 on top, and the recycling box 3 can rotate around the flip shaft 12 inside the suction hood 1 (the flip shaft 12 is a horizontally arranged shaft inside the suction hood, see reference for details). Figure 1As shown, the material gun 2 is flipped downwards to the filling state (the filling state is also the filling state, which means that the material gun 2 is inserted into the packaging barrel, and the valve block at the bottom of the material gun is opened by the control mechanism at the top of the material gun to fill the packaging barrel with material). The recycling box 3 is equipped with a horizontally arranged pad 4 (the pad 4 has a material drop hole in the middle, which can guide the material to flow downwards into the recycling box). When the recycling box 3 is in the horizontal state, the front end of the pad 4 exceeds the center line of the material gun 2 (so that when the material gun passes through the material gun hole 11 and moves downwards, the bottom of the material gun will first touch the pad 4, so as not to hit the recycling box). The front end of the pad 4 is designed to be cylindrical, so that after the recycling box 3 is pushed down by the bottom of the material gun 2, the pad 4 rotates downwards around the flipping axis 12, and the cylindrical surface of the pad 4 remains in contact with and tangent to the outer wall of the material gun 2. At this time, it is determined that the front end of the recycling box 3 exceeds the length D of the front end of the pad 2, so that when the material gun 2 continues to move downwards, the front end of the recycling box 3 will not contact the outer wall of the material gun 2.

[0051] refer to Figure 4 Where: O1: the axis of the flipping shaft;

[0052] O2: The rotation center at the rear end of the pad (this rotation center can be the fitted center or the actual center. Regardless of whether it is the fitted center or the actual center, when the recycling box is in a horizontal state, O2 is directly below O1).

[0053] O3: The center of the cylinder at the front end of the pad;

[0054] R: The radius of the cylinder at the front end of the pad block, obtained by measuring the distance;

[0055] d1: The horizontal distance between O1 and the wall of the feed gun, obtained by the amount of material passing through;

[0056] d2: The distance between O1 and O2, obtained by the amount of passage;

[0057] x1: The distance between O1 on the O2O1 extension line and the wall of the material gun tube when the recycling box is flipped over;

[0058] x2: The distance from O3 to the wall of the material gun tube, along the parallel line of O1O2 passing through O3;

[0059] x3: The distance between O3 on the O2O3 extension line and the wall of the material gun tube when the recycling box is flipped;

[0060] x4: The front end of the recycling bin exceeds the maximum length limit of the pad block;

[0061] D: The front end of the recycling box extends beyond the actual length of the pad block;

[0062] Based on the state of the recycling box 3 when the pad 4 is tangent to the outer wall of the material gun 2, draw the intersection diagram of the key node connection line and the extension line of the recycling box with the outer wall of the material gun 2. Determine from the diagram:

[0063] (1) (x1+d2+R):(x4+R+L1)=x2:x3, where x2 and x3 are two sides of the smaller right triangle, while (x1+d2+R) and (x4+R+L1) are two sides of the larger right triangle. The two right triangles share a common angle, thus conforming to the proportional relationship.

[0064] (2) x1:x2=d1:R, where x1 and d1 are the hypotenuse and leg of a right triangle, and x2 and R are the hypotenuse and leg of another right triangle. These two triangles also have the same angle, and their hypotenuses and legs also satisfy the proportional relationship.

[0065] (3) x3 = tan(arc cos(R / x2)), which is the formula for calculating the length of x3. Since the length of the perpendicular line of the hypotenuse in the right triangle with x2 and x3 as the legs is R, x2 and x3 satisfy the above functional relationship.

[0066] (4) (x1+d2):(x1+d2+R)=(x3+L1):(L1+R+x4), where (x1+d2),(x3+L1) and (x1+d2+R),(L1+R+x4) are the right-angled sides of the two large triangles, so the above proportional relationship is satisfied;

[0067] From the four unknown parameters x1, x2, x3, and x4 in the above four proportional formulas, the length of x4 represents the maximum length of the front end of the recycling box 3 that extends beyond the pad block. This length is exactly the length that contacts the outer wall of the material gun. Therefore, after determining this maximum length, the length D can be limited.

[0068] Then determine the length D based on x4; obviously, the length D is not necessarily better as long as it does not exceed x4, because the smaller the length D is, the greater the distance from the mouth of the bucket, and the easier it is to pour the material outside the mouth of the bucket. Therefore, it is also necessary to determine the minimum length to avoid material contaminating the outside of the mouth of the bucket.

[0069] After determining the length D, it is necessary to verify the length D to ensure that, under the condition of length D, the recycling box will not collide with other structures of the suction hood or the opening of the packaging barrel when it is flipped downwards. At the same time, it is also necessary to determine the distance W between the recycling box and the bottom of the suction hood when the recycling box is flipped to the filling state of the material gun, so that W is greater than the height H of the opening of the barrel, but less than H+4mm, thereby determining the height of the suction hood.

[0070] The determination of length D based on x4 includes: taking x5≤D<x4, where x5 is the larger of (x4-2mm) and 0.95*x4.

[0071] The bottom surface 31 of the recycling box 3 is V-shaped and has an inclined structure that is higher in the front and lower in the back. This not only prevents the bottom of the recycling box 3 from interfering with or colliding with other structures of the suction hood 1 during the process of the recycling box being pushed open and flipped by the material gun 2, but also allows the material to automatically flow backward along the bottom surface of the recycling box 3 after falling into the recycling box 3 through the pad block 4. This allows the recycling box to shift its center of gravity as far back as possible when collecting material and not being passively tilted, thereby maintaining the overall stability of the recycling box 3.

[0072] When the recycling box 3 is in a horizontal position, O2 is directly below O1, and O3 is directly in front of O2 (because the pads are arranged horizontally).

[0073] When the recycling box 3 is in a horizontal state, O2 is not directly below O1. The intersection of the horizontal extension of O2O3 and the perpendicular line passing through O3 is used as the virtual rotation center O2'. Then, O2' is used instead of O2 as the base point for calculation.

[0074] The bottom edge of the suction hood 1 is flush with the ground and directly below the material gun hole 11. Except for the recycling box 3, no other structure is designed.

[0075] A base plate 13 is provided at the bottom of the suction hood 1, directly below the recycling box 3.

[0076] The bottom plate 13 has an upward folded edge 13a on the edge near the material gun hole, so that the bottom plate 13 and the surrounding side plates 14 form a groove structure.

[0077] The bottom surface of the base plate 13 is flat and flush with the bottom edge of the suction hood 1.

[0078] The side plate 14 is provided with an air intake; the front end face of the bottom plate 13 is provided with a transparent cover 15 that can be flipped open, and the transparent cover 15 is sealed to the side plate 14 of the air intake hood 1.

[0079] The design method of the recycling bin to prevent contamination of the packaging barrel provided by this invention features a cylindrical front end of the pad, which ensures continuous contact with the outer wall of the material gun and prevents scratches on the outer wall. The optimal length of the recycling bin's front end extending beyond the pad and the positional relationship between the recycling bin and the barrel opening are determined by structural parameters such as the recycling bin's flipping shaft. This prevents material from dripping onto the outside of the packaging barrel opening during the tilting process and also prevents the recycling bin from contacting and rubbing against the outer wall of the material gun, thus protecting the material gun.

[0080] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0081] The above embodiments merely illustrate several implementation methods of the present invention, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the invention patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these all fall within the protection scope of the present invention. Therefore, the protection scope of this invention patent should be determined by the appended claims.

Claims

1. A design method for preventing a recycling box from contaminating a packaging barrel, characterized in that: include: The recycling box is placed in a suction hood with a gun hole on the top, and the recycling box can be turned down around the turning axis in the suction hood to the gun filling state. A horizontally arranged pad is provided in the recycling box; when the recycling box is in a horizontal state, the front end of the pad exceeds the center line of the gun; the front end of the pad is designed to be cylindrical, so that after the recycling box is pushed down by the bottom of the gun, the pad turns downward around the turning axis, and the cylindrical surface of the pad remains in contact with and tangent to the outer wall of the gun. At this time, the length D of the front end of the recycling box exceeding the front end of the pad is determined, so that when the gun continues to move downward, the front end of the recycling box will not touch the outer wall of the gun: According to the state of the recycling box when the pad is tangent to the outer wall of the gun, draw the intersection of the key node connection line of the recycling box and the extension line with the outer wall of the gun, and determine the (1), (x1+d2+R): (x4+R+L1)=x2:x3; (2), x1:x2=d1:R; (3), x3=tan(arc cos(R / x2)); (4), (x1+d2): (x1+d2+R)=(x3+L1): (L1+R+x4); From the four parameters x1, x2, x3, x4 in the above four proportional formulas, x4; Then determine the length D based on x4; Then verify the length D. When the recycling box is flipped to the gun filling state, determine the distance W between the recycling box and the bottom of the suction hood, so that W is greater than the height H of the barrel mouth, but less than H+4mm, thereby determining the height of the suction hood.

2. The design method according to claim 1, characterized in that: The determining of the length D according to x4 includes: taking x5≤D<x4, and taking x5 as the larger one of (x4-2mm) and 0.95*x4.

3. The design method according to claim 1, characterized in that: O1: the axis of the flip axis; O2: the rotation center of the rear end of the pad; O3: The center of the cylinder at the front end of the pad; R: The radius of the cylinder at the front end of the pad; d1: horizontal distance between O1 and the barrel wall; d2: distance between O1 and O2; x1: The distance between O1 and the barrel wall of the material gun on the extended line of O2O1 when the recycling box is flipped; x2: the parallel line of O1O2 passing through O3, the distance from O3 to the barrel wall of the material gun; x3: The distance between O3 and the barrel wall of the material gun on the extended line of O2O3 when the recycling box is flipped; x4: The front end of the recycling box exceeds the limit length of the pad; D: The front end of the recycling box exceeds the actual length of the pad.

4. The design method according to claim 1, characterized in that: The bottom surface of the recycling box is a V-shaped surface, and the bottom surface is an inclined structure with a high front and a low back; When the recycling box is in a horizontal state, O2 is located directly below O1, and O3 is located directly in front of O2 (because the pad is arranged horizontally).

5. The design method according to claim 4, characterized in that: When the recycling box is in a horizontal state, O2 is not directly below O1, so the intersection of the horizontal extension line of O2O3 and the vertical line passing through O3 is obtained as the virtual rotation center O2', and then O2' is used instead of O2 as the base point for calculation.

6. The design method according to claim 5, characterized in that: The bottom edge of the air suction hood is flush and corresponds to the bottom of the material gun hole. Except for the recycling material box, no other structure is designed.

7. The design method according to claim 1, characterized in that: Corresponding to the bottom of the recycling box, a bottom plate is provided at the bottom of the suction hood.

8. The design method according to claim 7, characterized in that: An edge of the bottom plate close to the direction of the material gun hole is provided with an upward folded edge, so that a groove structure is formed between the bottom plate and the surrounding side plates.

9. The design method according to claim 8, characterized in that: The bottom surface of the bottom plate is a plane and is flush with the bottom edge of the air suction hood.

10. The design method according to claim 1, characterized in that: The side plate is provided with an air suction port; the front end surface of the bottom plate is provided with a transparent cover plate that can be flipped open, and the transparent cover plate is butted and sealed with the side plate of the air suction hood.

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