Lithium iron phosphate packaging bag and filling device thereof

Abstract

The utility model discloses a lithium iron phosphate packaging bag and a filling device thereof, which comprise a plastic filling part, the filling part is connected with a feed opening, the feed opening is fixedly connected and communicated with the filling part, the axial lead of the feed opening and the central line of the filling part are collinear, the top end of the feed opening is separated from the filling part, and the top end of the feed opening is connected with the filling part. A positioning part is arranged at the bottom end of the filling part, and the axis of the positioning part and the axis of the discharging opening are collinear; materials are wrapped by the filling part with plasticity and certain strength, so that a worker can form the packaging bags into rectangles which are convenient to stack and store, and damage to the packaging bags and material loss caused by uneven or accidental falling due to vibration during transportation and storage of the packaging bags are reduced; damage of sharp parts to the surface of the filling part is reduced, and leakage of materials in the filling part caused by damage of the sharp parts to the filling part is avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to packing bag technical field especially is lithium iron phosphate packing bag and filling device thereof. BACKGROUND

[0002] As one of lithium battery production materials, lithium iron phosphate material needs to be transported to the battery factory for battery processing, and the existing technology usually uses a packing bag made of flexible material such as cotton to wrap the lithium iron phosphate material. The packing bag after filling the lithium iron phosphate material is not flat due to the existence of certain gas inside the packing bag. The packing bag has a certain curvature at the top and bottom, which leads to instability of the upper packing bag during loading, and the packing bag is prone to tilt during transportation. The customer is prone to cause the upper packing bag to fall during unloading, resulting in damage to the packing and loss of materials.

[0003] The utility model provides a kind of aluminum plastic bag with higher strength and certain plasticity, and adopts the way of vacuum extraction and high-strength extrusion, and one package of lithium iron phosphate is directly compressed into a dense rectangular package without gas after packaging. There is no air inside after packaging, and the entire packing bag will not bulge. The rectangular packing is arranged neatly and stably during transportation, and will not collapse. It is more secure, and its beneficial effects are predictable. SUMMARY

[0004] In order to overcome the deficiencies of the prior art, the utility model provides a kind of lithium iron phosphate packing bag and filling device, which changes the shape of the packing bag by using a filling part with certain strength and plasticity, so that the stacking state between multiple packing bags is more stable.

[0005] To solve the above technical problems, the utility model provides the following technical scheme: a kind of lithium iron phosphate packing bag including plastic filling part, the filling part is connected with the discharge port, the discharge port is fixedly connected and communicated on the filling part, the axis of the discharge port is coaxial with the center line of the filling part, the top end of the discharge port is separated from the filling part, the bottom end of the filling part is provided with positioning part, and the axis of the positioning part is coaxial with the axis of the discharge port.

[0006] As a preferred technical scheme of the lithium iron phosphate packing bag of the utility model, a plurality of exhaust ports are provided on the filling part, and the exhaust ports are arranged at the edge of the filling part and fixedly connected and communicated on the filling part.

[0007] As a preferred technical scheme of the lithium iron phosphate packing bag of the utility model, the top end of the exhaust port is provided with a one-way exhaust valve for exhausting air inside the filling part.

[0008] As an optimal technical solution for a lithium iron phosphate packaging bag of the present invention, the filling portion is wrapped with a protective layer, the protective layer is connected to the feeding port, the protective layer is connected to the exhaust port, and the positioning portion is located between the protective layer and the filling portion.

[0009] As an optimal technical solution for a lithium iron phosphate packaging bag of the present invention, at least two suspension straps are connected to the protective layer. The suspension straps are symmetrically arranged at both ends of the protective layer. The suspension straps are fixed to the protective layer and are made of elastic material.

[0010] The filling device of a lithium iron phosphate packaging bag of the utility model includes a base, a top plate is connected to the base, and a discharge pipe is arranged above the top plate, and the base is connected to an extrusion structure, and the extrusion structure includes a first electric push rod, a first pressure plate, a second electric push rod, a second pressure plate, a third electric push rod and a third pressure plate. There are two first electric push rods, and the two first electric push rods are symmetrically arranged at both ends of the base, and each first electric push rod is connected to the first pressure plate. The number of second electric push rods is equal to the number of first electric push rods and the axis line of the first electric push rod is perpendicular to the axis line of the second electric push rod. The two second electric push rods are symmetrically arranged at both ends of the base, and each second electric push rod is connected to the second pressure plate; there are two third electric push rods, and the two third electric push rods are symmetrically arranged at both ends of the top plate, one end of the third electric push rod is connected to the top plate, and the other end of the third electric push rod is connected to the third pressure plate.

[0011] As a preferred technical solution of a filling device for a lithium iron phosphate packaging bag of the present invention, a plurality of vibrating parts are provided at one end of the base facing the ground.

[0012] As a preferred technical solution of a filling device for a lithium iron phosphate packaging bag of the utility model, a plurality of vacuum pumps are provided on the top plate, and an exhaust pipe is fixed on and connected to the vacuum pump.

[0013] As a preferred technical solution of a filling device for a lithium iron phosphate packaging bag of the present invention, a hook is connected to the top plate, and the hook is connected to a hanging belt.

[0014] As a preferred technical solution of a filling device for a lithium iron phosphate packaging bag of the present invention, a quality detection unit is connected to the base, and an output end of the quality detection unit is connected to an outlet of a feed pipe.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] 1. The material is wrapped by a filling part that is plastic and has a certain strength, so that the staff can shape the package into a rectangle that is easy to stack and store, reducing the damage to the package caused by vibration or accidental falling during transportation and storage, and loss of materials. By providing a protective layer on the filling part, the damage to the surface of the filling part by sharp parts is reduced, avoiding damage to the filling part and leakage of materials in the filling part.

[0017] 2. Through the filling device matched with the packaging bag, when filling the packaging bag with materials, vibration and suction are used to reduce the air in the filling part, and the packaging bag is squeezed and shaped by the extrusion structure installed on the base so that the packaging bag can be shaped into a rectangle after filling the material. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 The overall structure of the utility model is shown in FIG. Figure 1 ;

[0019] Figure 2 This is a schematic cross-sectional view of the overall structure of the utility model Figure 2 ;

[0020] Figure 3 This is a schematic diagram of the structure of the filling part of the utility model Figure 1 ;

[0021] Figure 4 This is a schematic diagram of the structure of the filling part of the utility model Figure 2 ;

[0022] Figure 5 The overall structure of the utility model is shown in FIG. Figure 2 ;

[0023] Figure 6 This is a schematic cross-sectional view of the overall structure of the utility model Figure 2 ;

[0024] Figure 7 This is a schematic diagram of the connection between the packaging bag and the filling device of the utility model;

[0025] Figure 8 The filling device structure of the utility model is shown in FIG. Figure 1 ;

[0026] Figure 9 The filling device structure of the utility model is shown in FIG. Figure 2 .

[0027] Among them: 1. Protective layer; 11. Suspension belt; 2. Filling part; 21. Feeding port; 22. Exhaust port; 23. Positioning part; 3. Base; 31. Top plate; 32. Feeding pipe; 33. Air pump; 34. Exhaust pipe; 35. Hook; 36. First electric push rod; 37. First pressure plate; 38. Second electric push rod; 39. Second pressure plate; 310. Quality inspection part; 311. Third electric push rod; 312. Third pressure plate; 313. Vibration part. DETAILED DESCRIPTION

[0028] In order to make the technical means, creative features, purpose and efficacy of the present invention easy to understand, the present invention is further described below in conjunction with specific embodiments, but the following embodiments are only preferred embodiments of the present invention, not all. Based on the embodiments in the implementation manner, other embodiments obtained by those skilled in the art without making creative work are all within the scope of protection of the present invention. The experimental methods in the following embodiments, unless otherwise specified, are all conventional methods, and the materials, reagents, etc. used in the following embodiments, unless otherwise specified, can be obtained from commercial channels.

[0029] Example 1

[0030] The present application includes a filling portion 2 made of aluminum foil for filling lithium iron phosphate material. The filling portion 2 is a hollow design. The filling portion 2 made of aluminum foil has plasticity. The center line position of the filling portion 2 is set as follows Figure 2 The feeding port 21 shown is used to add lithium iron phosphate material. The center of the feeding port 21 is hollowed out to facilitate the entry of lithium iron phosphate material into the filling portion 2. The bottom end of the feeding port 21 is inserted into the filling portion 2 by 10-15 cm. The axis of the feeding port 21 is collinear with the center line of the filling portion 2. The outer wall of the filling portion 2 is wrapped with a protective layer 1 for protecting the filling portion 2 from being scratched by sharp objects. The protective layer 1 can be made of a pp woven bag, such as Figure 1 The top of the feed opening 21 is connected to the protective layer 1 and is located on the outer wall of the protective layer 1, which is convenient for filling the lithium iron phosphate material. After the lithium iron phosphate material is injected into the filling part 2, the filling part 2 made of aluminum foil is formed into the following shape by manual or mechanical pressing according to its plasticity. Figure 6 The rectangle shown is convenient for stacking multiple lithium iron phosphate packaging bags. Different from the elliptical shape of the packaging bags after filling with materials in the prior art, the stacked state is more stable, reducing the deviation caused by vibration during transportation, which makes the stacked lithium iron phosphate packaging bags uneven, affecting the loading and unloading of the workers, and also causing the packaging bags to be damaged due to accidental collisions, causing the material in the packaging bags to leak and lose materials.

[0031] In order to further ensure the stability of the lithium iron phosphate packaging bags in the stacked state, the bottom end of the filling portion 2 is provided with a Figure 4 The positioning portion 23 shown in the figure has its axis aligned with the axis of the discharge port 21 and its inner diameter equal to the outer diameter of the discharge port 21. The positioning portion 23 is fixedly mounted on the outer wall of the bottom end of the filling portion 2. When multiple lithium iron phosphate packaging bags are stacked, the positioning portion 23 of the upper lithium iron phosphate packaging bag overlaps with the discharge port 21 of the lower lithium iron phosphate packaging bag, thereby improving the stacking firmness of the stacked lithium iron phosphate packaging bags during transportation and preventing them from accidentally falling. The positioning portion 23 is arranged as shown in the figure. Figure 2 As shown, it is located between the protective layer 1 and the filling portion 2 , so that the protective layer 1 can protect the positioning portion 23 .

[0032] Example 2

[0033] On the basis of embodiment 1, the loading portion 2 is provided with a plurality of Figure 2 The exhaust port 22 shown has its bottom end inserted into and connected to the filling portion 2. The exhaust port 22 is a cylindrical structure with a hollow center and a one-way exhaust valve installed at the top. The one-way exhaust valve is used to exhaust the air in the filling portion 2. The exhaust ports 22 are symmetrically arranged at both ends of the filling portion 2. Four exhaust ports 22 are typically provided, one at each end of the filling portion 2. The top end of the exhaust port 22 is connected to the protective layer 1 to facilitate staff to exhaust the air in the filling portion 2.

[0034] Example 3

[0035] On the basis of embodiment 1 or 2, the protective layer 1 is connected with a plurality of Figure 1 The hanging strap 11 shown is used to secure the filling device of the lithium iron phosphate packaging bag while it is being filled with material, ensuring the efficiency of the filling device. The hanging strap 11 also facilitates the handling of the packaging bag by the staff. The hanging strap 11 is connected to the protective layer 1 by sewing and has a certain degree of elasticity, which can reduce the pressure on the staff's hands when the hanging strap 11 is used to carry the packaging bag. Multiple hanging straps 11 are symmetrically arranged at both ends of the protective layer 1. The number of hanging straps 11 is usually four, and the four hanging straps 11 are respectively arranged at the four ends of the protective layer 1.

[0036] When using this device, the multiple hanging straps 11 provided on the protective layer 1 are connected to the filling device of the lithium iron phosphate packaging bag, so that the discharge structure of the filling device of the lithium iron phosphate packaging bag is connected to the discharge port 21. The discharge structure of the filling device of the lithium iron phosphate packaging bag injects the lithium iron phosphate material into the filling part 2. After filling the lithium iron phosphate material of a specified mass, the air in the filling part 2 is discharged using the exhaust port 22 connected to the filling part 2, so that the air between the lithium iron phosphate materials is reduced, and the filling amount of the lithium iron phosphate material in the packaging bag is increased. After the lithium iron phosphate material is filled, the filling part 2 is shaped into the following shape by manual or mechanical extrusion. Figure 6 As shown in the rectangle, multiple rectangular packaging bags are stacked when transporting or storing the packaging bags, and the discharge port 21 between two packaging bags is connected to the positioning portion 23 to ensure the stability of the stacking state.

[0037] The present application also includes a filling device for lithium iron phosphate packaging bags, such as Figures 7 to 9 As shown, it includes a base 3, a top plate 31 is arranged above the base 3, the top plate 31 is connected to the base 3 through a supporting assembly, the base 3 is connected to an extrusion structure for shaping the filling part 2, and one or more air pumps 33 are connected to the top plate 31, and the air pump 33 is connected to an exhaust pipe 34, and the exhaust pipe 34 is connected to the exhaust port 22 for extracting the air in the filling part 2. The exhaust pipe 34 is made of flexible material and is commonly a bellows. The number of the air pumps 33 is equal to the number of the exhaust ports 22, so that the device can exhaust all the exhaust ports 22 synchronously at the same time.

[0038] The base 3 is connected to Figure 9 The vibrating part 313 generates vibrations by itself to make the device and the connected packaging bag vibrate synchronously, further reducing the residual air between the materials in the filling part 2 and thus increasing the filling amount of the filling part 2 for the materials.

[0039] The extrusion structure is used to shape the packaging bag filled with materials so that the packaging bag becomes Figure 5The rectangle shown in the figure includes a first electric push rod 36, a first pressure plate 37, a second electric push rod 38, a second pressure plate 39, a third electric push rod 311 and a third pressure plate 312. The first electric push rod 36 is provided with two, and the two first electric push rods 36 are symmetrically connected to the two ends of the base 3. The first pressure plate 37 is connected to the first electric push rod 36. By changing the length of the first electric push rod 36 itself, the first pressure plate 37 connected thereto is moved along the axial direction of the first electric push rod 36. By changing the distance between the two first pressure plates 37, the two first pressure plates 37 are simultaneously squeezed on the two ends of the filling part 2, so that the contact end of the filling part 2 and the first pressure plate 37 is called a rectangle in the squeezed state. Similarly, two second electric push rods 3 are symmetrically provided on the base 3. 8. A second pressing plate 39 is connected to the second electric push rod 38. The axis of the first electric push rod 36 is perpendicular to the axis of the second electric push rod 38. An extrusion cavity is formed by the two first pressing plates 37 and the two second pressing plates 39 to pressurize the four end faces of the filling part 2 to shape it into a rectangle. Two third electric push rods 311 are provided and symmetrically arranged at both ends of the top plate 31. One end of the third electric push rod 311 is connected to the top plate 31 and the other end is connected to the third pressing plate 312. The third pressing plate 312 is slidably connected to the discharge tube 32. Through the cooperation of the base 3, the first pressing plate 37, the second pressing plate 39 and the third pressing plate 312, the six end faces of the filling part 2, namely the upper, lower, left, right, front and rear, are squeezed at the same time, so that the packaging bag becomes as follows Figure 5 The rectangle shown.

[0040] In order to further ensure that the lithium iron phosphate packaging bag filling device will not damage the feed pipe 32 and the exhaust pipe 34 connected thereto due to the weight change during the filling process of the lithium iron phosphate packaging bag, the top plate 31 is connected with a Figure 7 The hook 35 shown is connected to the suspension belt 11 so that the lithium iron phosphate packaging bag will not fall a large distance during the filling process and cause damage to the filling device of the lithium iron phosphate packaging bag.

[0041] Furthermore, the base 3 is connected to Figure 8 The quality detection unit 310 shown is used to measure the overall mass of the lithium iron phosphate packaging bag. The output end of the quality detection unit 310 is connected to the feeding device connected to the discharge pipe 32. When the total mass of the lithium iron phosphate packaging bag and the filled material reaches a preset value, the quality detection unit 310 issues a command to stop feeding the material into the discharge pipe 32, thereby stopping the material filling of the filling part 2.

[0042] The above shows and describes the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely preferred examples of the present invention and are not intended to limit the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention, and such changes and improvements fall within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.

Claims

1. A lithium iron phosphate packaging bag, comprising a filling portion (2), characterized in that: The loading portion (2) is provided with a discharge port (21), the discharge port (21) is fixedly connected to the loading portion (2) and communicated with the loading portion (2), the axis of the discharge port (21) is collinear with the center line of the loading portion (2), and a positioning portion (23) is provided at the bottom end of the loading portion (2), the axis of the positioning portion (23) is collinear with the axis of the discharge port (21).

2. The lithium iron phosphate packaging bag according to claim 1, characterized in that: A plurality of exhaust ports (22) are provided on the filling portion (2), wherein the exhaust ports (22) are provided at the top edge of the filling portion (2), and the exhaust ports (22) are fixedly connected to and communicated with the filling portion (2).

3. The lithium iron phosphate packaging bag according to claim 2, characterized in that: A one-way exhaust valve for exhausting the air inside the filling portion (2) is provided at the top end of the exhaust port (2).

4. The lithium iron phosphate packaging bag according to claim 3, characterized in that: The filling portion (2) is wrapped with a protective layer (1), the protective layer (1) is connected to the discharge port (21), and the protective layer (1) is connected to the exhaust port (22); the positioning portion (23) is located between the protective layer (1) and the filling portion (2).

5. The lithium iron phosphate packaging bag according to claim 4, characterized in that: At least two suspension belts (11) are connected to the protective layer (1), and the suspension belts (11) are symmetrically arranged at both ends of the protective layer (1). The suspension belts (11) are fixed to the protective layer (1); and the suspension belts (11) are made of elastic material.

6. A filling device for the lithium iron phosphate packaging bag according to any one of claims 1 to 5, characterized in that: The invention comprises a base (3), a top plate (31) is arranged above the base (3), a feed pipe (32) is connected to the top plate (31), an extrusion structure is connected to the base (3), and the extrusion structure comprises a first electric push rod (36), a first pressing plate (37), a second electric push rod (38), a second pressing plate (39), a third electric push rod (311) and a third pressing plate (312), two first electric push rods (36) are provided, and the two first electric push rods (36) are symmetrically arranged at both ends of the base (3), and each first electric push rod (36) is connected to the first pressing plate (37); the second electric push rod ( The number of the first electric push rods (38) is equal to the number of the first electric push rods (36), and the axis of the first electric push rod (36) is perpendicular to the axis of the second electric push rod (38), the two second electric push rods (38) are symmetrically arranged at both ends of the base (3), and each second electric push rod (38) is connected to a second pressure plate (39); there are two third electric push rods (311), the two third electric push rods (311) are symmetrically arranged at both ends of the top plate (31), one end of the third electric push rod (311) is connected to the top plate (31), and the other end of the third electric push rod (311) is connected to the third pressure plate (312).

7. The filling device for lithium iron phosphate packaging bags according to claim 6, characterized in that: A plurality of vibration parts (313) are provided at one end of the base (3) facing the ground.

8. The filling device for lithium iron phosphate packaging bags according to claim 6, characterized in that: A plurality of air pumps (33) are provided on the top plate (31), and an exhaust pipe (34) is fixed to and connected to the air pump (33).

9. The filling device for lithium iron phosphate packaging bags according to claim 6, characterized in that: A hook (35) is connected to the top plate (31), and the hook (35) is connected to the suspension belt (11).

10. The filling device for lithium iron phosphate packaging bags according to claim 6, characterized in that: A quality detection unit (310) is connected to the base (3), and an output end of the quality detection unit (310) is connected to an outlet of a feed pipe (32).

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