Secondary vacuum packaging machine

Abstract

The utility model relates to the technical field of battery packaging, in particular to a secondary vacuum packaging machine which comprises a machine case, a packaging device arranged on the machine case and a lifting vacuum cover arranged on the packaging device in a covering mode, and the lifting vacuum cover covers the packaging device to form a vacuum cavity. The packaging device comprises a placing table for placing a battery for packaging, a sealing mechanism for sealing and packaging the battery and an exhaust assembly which are sequentially arranged at the top of the case from bottom to top; the sealing mechanism comprises a pressing assembly and an adjusting rack which is vertically arranged above the pressing assembly and is used for adjusting the parallelism of the pressing assembly; according to the utility model, the battery is placed on the placing table, the sealing mechanism and the exhaust assembly which are correspondingly arranged front and back exhaust the battery and then package the battery, and the parallelism of the sealing mechanism can be adjusted by adjusting the rack so as to prevent the battery from being damaged.

Description

Technical Field

[0001] The utility model relates to the technical field of battery packaging, in particular to a secondary vacuum packaging machine. Background Art

[0002] The secondary vacuum packaging of soft-pack batteries means that after the positive and negative electrodes of the battery are stacked and pressed with the electrolyte medium, the entire battery is vacuumed for the second time and encapsulated in a sealed package, which can maximize the stability, safety and durability of the battery.

[0003] Therefore, a secondary vacuum packaging machine has appeared on the market. However, it is found that the die head will be slightly tilted and no longer parallel after repeated use, which will affect the packaging accuracy, causing local excessive extrusion to damage the battery and create gaps at the sealing point. Utility Model Content

[0004] In order to solve the problems in the prior art, the utility model provides a secondary vacuum packaging machine, aiming to solve the requirement of parallelism at the sealing part.

[0005] The utility model solves the technical problem by adopting the following scheme: a secondary vacuum packaging machine, comprising a chassis, a packaging device arranged on the chassis and a lifting vacuum cover arranged on the packaging device, wherein the lifting vacuum cover covers the packaging device to form a vacuum chamber, the packaging device comprises a placement table for placing batteries for packaging, a sealing mechanism and an exhaust assembly for sealing the batteries, which are arranged on the top of the chassis from bottom to top, and the sealing mechanism comprises a clamping assembly and an adjustment frame vertically arranged above the clamping assembly for adjusting the parallelism of the clamping assembly.

[0006] By adopting the above technical solution, the battery is placed on the placement table, and the corresponding sealing mechanisms and exhaust components arranged at the front and back are used to exhaust the battery first and then package it. The parallelism of the sealing mechanism can be adjusted by adjusting the frame to prevent damage to the battery.

[0007] Furthermore, the clamping assembly includes a lower die head fixed to the top of the chassis and an upper die head connected to the adjusting frame, the adjusting frame includes an adjusting block connected to the upper die head and a first lifting frame body arranged on both sides of the adjusting block, and the adjusting block is provided with an adjusting hole for adjusting the tightness of the upper die head.

[0008] By adopting the above technical solution, the adjustment hole on the adjustment block that fixes the upper die head is used to adjust the tension to achieve the effect of fine-tuning the parallelism, so that the upper die head and the lower die head are parallel without gap.

[0009] Furthermore, the exhaust assembly includes an exhaust seat fixed on the top of the chassis for placing a battery air bag and a lifting bayonet frame vertically arranged above the exhaust seat, the lifting bayonet frame includes a piercing portion with multiple bayonets evenly arranged and a second lifting frame body fixed above the piercing portion for driving the piercing portion to move vertically and horizontally to pierce the battery air bag below, and the second lifting frame body is arranged next to the first lifting frame body.

[0010] Furthermore, a plurality of arranged heating elements are provided in the exhaust seat, and a heating hole corresponding to the heating element is also provided on the end surface of the exhaust seat in contact with the battery.

[0011] By adopting the above technical solution, the battery air bag is placed on the exhaust seat, and the heating elements below the puncture hole form a multi-stage heating area to solve the problem of slow heating and large temperature error. Then, multiple bayonets on the puncture part cooperate with the exhaust part to puncture the air bag and discharge the gas.

[0012] Furthermore, the chassis is also provided with a first driving component for driving the first lifting frame and the second lifting frame to lift and lower. The first driving component includes two first lifting cylinders fixedly mounted on the top wall of the chassis and a pushing plate connected to the first lifting cylinders. The two sides of the two pushing plates are respectively fixedly connected to the bottom ends of the first lifting frame and the second lifting frame movably penetrated through the top of the chassis.

[0013] By adopting the above technical solution, two lifting cylinders are fixed on the top wall of the chassis, and the lifting rods inside them are fixedly connected to the pushing plate at the lower end, and the two lifting frames inserted into the chassis are respectively connected to the pushing plates. When the lifting cylinder drives the pushing plates to move up and down, the two lifting frames are respectively driven to move up and down.

[0014] Furthermore, a second driving assembly for driving the lifting vacuum hood to move up and down is provided on both sides of the lifting vacuum hood, and the second driving assembly includes a second lifting cylinder arranged in the chassis, and a second lifting rod in the second lifting cylinder is passed through the top of the chassis and fixedly connected to both sides of the lifting vacuum hood.

[0015] Furthermore, the chassis is also provided with a guide assembly for vertically lifting the lifting vacuum cover, and the guide assembly includes a guide column fixed to the top of the chassis and a guide rod movably inserted through the guide column and horizontally aligned with both sides of the lifting rod.

[0016] By adopting the above technical solution, the lifting rod cooperates with the guide components on both sides to lift the lifting vacuum cover smoothly and vertically.

[0017] Furthermore, the chassis is provided with a sealing groove adapted for the lifting vacuum cover, and the chassis is also provided with an exhaust assembly for evacuating the vacuum chamber, and the exhaust assembly includes an exhaust hole running through the top of the chassis and an exhaust device connected under the exhaust hole.

[0018] By adopting the above technical solution, the lifting vacuum cover is embedded in the sealing groove on the top of the chassis to prevent gaps from appearing at the edge to achieve a sealing effect, and then the vacuum valve in the chassis forms a vacuum chamber in the lifting vacuum cover through the exhaust hole.

[0019] Furthermore, a fixed pressure plate for preventing the battery from loosening is also provided in the lifting vacuum cover.

[0020] By adopting the above technical solution, the fixed pressure plate presses the battery to prevent it from loosening during the packaging process.

[0021] Compared with the prior art, the beneficial effects of the utility model are:

[0022] 1. The utility model can fine-tune the parallelism of the upper die head by adjusting the frame, so that there is no gap between the upper die head and the lower die head, ensuring that the pressure on the battery during the packaging process is uniform and the packaging quality is stable.

[0023] 2. The utility model solves the problem of slow heating and large temperature error by arranging multiple heating elements under the exhaust seat to form segmented heating areas.

[0024] The above description is only an overview of the technical solution of the present invention. In order to more clearly understand the technical means of the present invention, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the present invention more obvious and easy to understand, the following specifically cites a preferred embodiment and describes it in detail with the accompanying drawings as follows. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a structural schematic diagram of this embodiment;

[0026] Figure 2 This is an enlarged view of the packaging device of this embodiment;

[0027] Figure 3 This is an overall diagram of this embodiment;

[0028] Figure 4 This is a bottom view of the lifting vacuum cover of this embodiment;

[0029] Figure 5 This is a top view of the chassis of this embodiment.

[0030] In the figure: 1. chassis; 2. packaging device; 21. placement table; 22. sealing mechanism; 221. clamping assembly; 2211. lower die head; 2212. upper die head; 222. adjusting frame; 2221. adjusting block; 2222. first lifting frame; 23. exhaust assembly; 231. exhaust seat; 232. lifting bayonet frame; 2321. piercing part; 2322. second lifting frame; 3. lifting vacuum cover; 4. vacuum chamber; 5. adjusting hole; 6. heating element; 7. heating hole; 8. first lifting cylinder; 9. pushing plate; 10. second lifting cylinder; 11. guide column; 12. guide rod; 13. sealing groove; 14. exhaust hole; 15. exhaust device; 16. fixed pressure plate. DETAILED DESCRIPTION

[0031] In order to make the content of the utility model more clearly understood, the utility model is further described below based on specific embodiments in combination with the accompanying drawings.

[0032] It should be noted that the terms "center", "upper", "lower", "front", "back", "left", "right", "top", "inside", "outside" and the like used herein to indicate positions or positional relationships are based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as a limitation on the present invention. Unless otherwise specified, "plurality" means two or more.

[0033] Unless otherwise clearly specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this utility model can be understood by specific circumstances.

[0034] like Figures 1 to 5As shown, a secondary vacuum packaging machine is used for vacuum pre-sealing and secondary vacuum final sealing processes of soft-pack lithium batteries, and can realize functions such as vacuuming, piercing and draining, and heating and sealing; wherein this embodiment includes a chassis 1, a packaging device 2 arranged on the chassis 1, and a lifting vacuum cover 3 covering the packaging device 2, wherein the lifting vacuum cover 3 covers the top of the packaging device 2 to form a vacuum chamber 4, and this packaging device 2 includes a placement table 21 for placing batteries for packaging, a sealing mechanism 22 and an exhaust assembly 23 for sealing the batteries, which are arranged on the top of the chassis 1 from bottom to top, and this sealing mechanism 22 includes a clamping assembly 221 and an adjustment frame 222 vertically arranged above the clamping assembly 221 for adjusting the parallelism of the clamping assembly 221.

[0035] Specifically, Figure 5 As shown, the sealing mechanism 22 and the exhaust assembly 23 correspondingly arranged at the front and rear are used to exhaust the battery first and then package it. Figure 2 As shown, the sealing mechanism 22 of this embodiment is composed of a sealing mechanism 22 of a lower die head 2211 and an upper die head 2212 fixed on the top of the chassis 1, plus an adjusting frame 222 that can adjust the upper die head 2212. The die head is made of high-hardness alloy steel and high-thermal conductivity copper; and the adjusting frame 222 includes an adjusting block 2221 connected to the upper die head 2212 and a first lifting frame body 2222 arranged on both sides of the adjusting block 2221. The adjusting block 2221 is provided with an adjusting hole 5 for adjusting the tightness of the upper die head 2212. The adjusting hole 5 on the adjusting block 2221 that fixes the upper die head 2212 is used to adjust the tightness to achieve the effect of fine-tuning the parallelism, so that the upper die head 2212 and the lower die head 2211 are parallel without gaps, and the damage to the battery is prevented by adjusting the parallelism.

[0036] Further, such as Figure 2 and Figure 4 As shown, the exhaust assembly 23 of this embodiment includes an exhaust seat 231 fixed on the top of the chassis 1 for placing the battery air bag and a lifting bayonet frame 232 vertically arranged above the exhaust seat 231. The lifting bayonet frame 232 includes a piercing portion 2321 with multiple bayonets evenly arranged and a second lifting frame body 2322 fixed above the piercing portion 2321 for driving the piercing portion 2321 to move vertically and horizontally to pierce the battery air bag below. The second lifting frame body 2322 is arranged beside the first lifting frame body 2222. A plurality of arranged heating elements 6 are arranged in the exhaust seat 231, and a heating hole 7 corresponding to the heating element 6 is also provided on the end surface of the exhaust seat 231 in contact with the battery. During operation, the battery air bag is placed on the exhaust seat 231, and the heating elements 6 below the piercing hole form a multi-stage heating area to solve the problem of slow heating and large temperature error. Then, the multiple bayonets on the piercing portion 2321 cooperate with the exhaust portion to pierce the air bag and discharge the gas.

[0037] like Figure 1As shown, the chassis 1 of this embodiment is further provided with a first driving assembly for driving the first lifting frame 2222 and the second lifting frame 2322 to rise and fall. The first driving assembly includes two first lifting cylinders 8 fixedly mounted on the top wall of the chassis 1 and a push plate 9 connected to the first lifting cylinders 8. The two sides of the two push plates 9 are respectively fixedly connected to the bottom ends of the first lifting frame 2222 and the second lifting frame 2322 movably penetrated through the top of the chassis 1. The two lifting cylinders fixed on the top wall of the chassis 1 have lifting rods fixedly connected to the push plate 9 at the lower end, and the two lifting frames penetrated into the chassis 1 are respectively connected to the push plate 9. When the lifting cylinder drives the push plate 9 to move up and down, the two lifting frames are respectively driven to rise and fall.

[0038] Furthermore, in this embodiment, a second driving assembly for driving the lifting vacuum cover 3 to move up and down is also provided on both sides of the lifting vacuum cover 3, and the second driving assembly includes a second lifting cylinder 10 provided in the chassis 1, and a second lifting rod in the second lifting cylinder 10 is passed through the top of the chassis 1 and fixedly connected to both sides of the lifting vacuum cover 3. In addition, a guide assembly for vertically lifting the lifting vacuum cover 3 is also provided on the chassis 1, and the guide assembly includes a guide column 11 fixedly provided on the top of the chassis 1 and a guide rod 12 movably passed through the guide column 11 and horizontally aligned with both sides of the lifting rod. The lifting rod cooperates with the guide assemblies on both sides to lift the lifting vacuum cover 3 smoothly and vertically.

[0039] like Figure 3 As shown, the chassis 1 of this embodiment is also provided with a sealing groove 13 adapted to the lifting vacuum cover 3, and a vacuum assembly for vacuuming the vacuum chamber 4 is also provided in the chassis 1, and the vacuum assembly includes a vacuum hole 14 running through the top of the chassis 1 and a vacuum device 15 connected under the vacuum hole 14. The lifting vacuum cover 3 is embedded in the sealing groove 13 at the top of the chassis 1 to prevent gaps from appearing at the edge to achieve a sealing effect, and then the vacuum valve in the chassis 1 forms a vacuum chamber 4 in the lifting vacuum cover 3 through the vacuum hole 14.

[0040] like Figure 4 As shown, in this embodiment, a fixed pressing plate 16 for preventing the battery from loosening is further provided in the lifting vacuum cover 3. During packaging, the fixed pressing plate 16 descends together with the lifting vacuum cover 3 to press the battery to prevent it from loosening during the packaging process.

[0041] The working principle of this embodiment is as follows: in this embodiment, the parallelism of the upper die head 2212 can be fine-tuned by adjusting the frame 222, so that there is no gap between the upper die head 2212 and the lower die head 2211, ensuring that the pressure on the battery during the packaging process is uniform and the packaging quality is stable. In addition, by arranging a multi-segment heating element 6 under the exhaust seat 231 to form a segmented heating area, the problem of slow heating and large temperature error is solved.

[0042] The embodiments described above are only preferred implementation modes of the present utility model and cannot be used to limit the protection scope of the present utility model. Any non-substantial changes and modifications made by technicians in this field on the basis of the utility model shall fall within the protection scope of the present utility model.

Claims

1. A secondary vacuum packaging machine, characterized in that: It includes a chassis, a packaging device arranged on the chassis and a lifting vacuum cover covering the packaging device, wherein the lifting vacuum cover covers the packaging device to form a vacuum chamber, and the packaging device includes a placement table for placing batteries for packaging, a sealing mechanism and an exhaust assembly for sealing the batteries, which are arranged on the top of the chassis from bottom to top, and the sealing mechanism includes a clamping assembly and an adjustment frame vertically arranged above the clamping assembly for adjusting the parallelism of the clamping assembly.

2. A secondary vacuum packaging machine according to claim 1, characterized in that: The clamping assembly includes a lower die head fixed on the top of the chassis and an upper die head connected to the adjustment frame. The adjustment frame includes an adjustment block connected to the upper die head and a first lifting frame body arranged on both sides of the adjustment block. The adjustment block is provided with an adjustment hole for adjusting the tightness of the upper die head.

3. A secondary vacuum packaging machine according to claim 2, characterized in that: The exhaust assembly includes an exhaust seat fixedly mounted on the top of the chassis for placing a battery air bag and a lifting bayonet frame vertically mounted above the exhaust seat. The lifting bayonet frame includes a piercing portion with multiple bayonets evenly arranged and a second lifting frame body fixedly mounted above the piercing portion for driving the piercing portion to move vertically and horizontally to pierce the battery air bag below. The second lifting frame body is arranged next to the first lifting frame body.

4. A secondary vacuum packaging machine according to claim 3, characterized in that: A plurality of arranged heating elements are arranged in the exhaust seat, and a heating hole corresponding to the heating element is also arranged on the end surface of the exhaust seat in contact with the battery.

5. A secondary vacuum packaging machine according to claim 4, characterized in that: The chassis is also provided with a first driving component for driving the first lifting frame and the second lifting frame to lift. The first driving component includes two first lifting cylinders fixedly mounted on the top wall of the chassis and a pushing plate connected to the first lifting cylinders. The two sides of the two pushing plates are respectively fixedly connected to the bottom ends of the first lifting frame and the second lifting frame movably penetrated through the top of the chassis.

6. A secondary vacuum packaging machine according to claim 5, characterized in that: The lifting vacuum cover is also provided with a second driving assembly on both sides thereof for driving the lifting vacuum cover to move up and down. The second driving assembly includes a second lifting cylinder arranged in the chassis. The second lifting rod in the second lifting cylinder is passed through the top of the chassis and is fixedly connected to both sides of the lifting vacuum cover.

7. A secondary vacuum packaging machine according to claim 6, characterized in that: The chassis is also provided with a guide assembly for vertically lifting the lifting vacuum cover, and the guide assembly includes a guide column fixed on the top of the chassis and a guide rod movably inserted through the guide column and horizontally aligned with both sides of the lifting rod.

8. A secondary vacuum packaging machine according to claim 7, characterized in that: The chassis is also provided with a sealing groove adapted to the lifting vacuum cover, and the chassis is also provided with an exhaust component for evacuating the vacuum chamber. The exhaust component includes an exhaust hole running through the top of the chassis and an exhaust device connected under the exhaust hole.

9. The secondary vacuum packaging machine according to claim 7, characterized in that: A fixed pressing plate for preventing the battery from loosening is also arranged in the lifting vacuum cover.

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