Negative pressure formation needle bed

Abstract

The utility model discloses a negative pressure formation needle bed, which relates to the technical field of lithium battery manufacturing and comprises a needle bed frame body, a current probe assembly, a negative pressure assembly and a tray lifting assembly, the current probe assembly and the negative pressure assembly are fixedly installed at the top of the needle bed frame body, the material disc lifting assembly is installed at the bottom of the needle bed frame body, a material disc is lifted through the material disc lifting assembly, so that a battery in the material disc is connected with the current probe assembly and the negative pressure assembly, and the negative pressure formation process is carried out; the material tray lifting assembly comprises guide rods, a lifting frame and a lifting motor, the two ends of the multiple guide rods are fixedly connected with the top and the bottom of the needle bed frame body respectively, the lifting motor is arranged at the bottom of the needle bed frame body, the lifting frame is in sliding connection with the guide rods, the lifting frame is fixedly connected with the lead screw, and the lifting motor drives the lifting frame to achieve lifting of the material tray; the beneficial effects of the utility model are that the stepping motor replaces a cylinder for driving, so that the device can ensure that the two sides are pressed synchronously, and the pressing depth of the current probe and the battery pole is accurately controlled.

Description

Technical Field

[0001] The utility model relates to the technical field of lithium battery manufacturing, and more specifically, to a negative pressure forming needle bed. Background Art

[0002] In the battery manufacturing process, the battery pole usually needs to be pressed to enhance the conductivity of the battery. A negative pressure forming needle bed is a device used to achieve this pressing process. Its design principle and working mode not only directly affect the performance of the battery, but also are related to the battery production efficiency and even the battery safety.

[0003] However, the existing negative pressure forming needle bed mainly uses a cylinder to complete the pressing process of the battery pole. Although this equipment has a simple structure and is easy to operate, in actual operation, the debugging process of the cylinder stroke on both sides is often difficult, and it is difficult to ensure the consistency of the stroke on both sides of the cylinder, which means that when the battery pole is pressed, it is difficult to accurately control the pressing depth. Inconsistent strokes on both sides of the cylinder may cause uneven battery performance. If the pressing depth is too large, it may damage the battery pole and even cause serious problems such as battery short circuit; if the pressing depth is insufficient, the conductive effect inside the battery may be affected, reducing the overall performance of the battery. Therefore, how to accurately control the stroke on both sides of the cylinder to ensure the consistency of the pressing depth of the battery pole is an important issue in the current development of negative pressure forming needle bed technology.

[0004] In addition, the existing negative pressure needle bed has some other technical problems. For example, the cylinder push method will be affected by air pressure fluctuations, which makes the working stability of the equipment challenged. In addition, the cylinder's reaction speed is relatively slow, and the contact time with the battery is long, which is easy to cause damage to the electrode surface, affecting the efficiency and yield of battery production. Utility Model Content

[0005] In order to overcome the shortcomings of the prior art, the utility model provides a negative pressure forming needle bed, which uses a stepper motor instead of the traditional cylinder drive method, making equipment debugging more convenient and ensuring the synchronization of pressing on both sides, thereby more accurately controlling the pressing depth of the current probe and the battery pole.

[0006] The technical solution adopted by the utility model to solve the technical problem is: a negative pressure forming needle bed, the improvement of which is that it includes a needle bed frame, a current probe assembly, a negative pressure assembly and a tray lifting assembly;

[0007] The current probe assembly and the negative pressure assembly are fixedly mounted on the top of the needle bed frame, and the material tray lifting assembly is mounted on the bottom of the needle bed frame. The material tray is lifted by the material tray lifting assembly to connect the battery in the material tray with the current probe assembly and the negative pressure assembly to perform a negative pressure forming process; the material tray lifting assembly includes a guide rod, a lifting frame, and a lifting motor, the two ends of the multiple guide rods are respectively fixedly connected to the top and bottom of the needle bed frame, the lifting motor is arranged on the lower side of the needle bed frame, the lifting frame is slidably connected to the guide rod, a screw assembly is provided on the lifting motor, the lifting frame is fixedly connected to the screw assembly, and the lifting frame is driven by the lifting motor to realize the lifting of the material tray.

[0008] In the above structure, the material tray lifting assembly also includes a turbine screw mechanism, a connecting rod, and a synchronous belt; the lifting motor is installed at the bottom of the needle bed frame, and the turbine screw mechanism is installed on both sides of the needle bed frame. The lifting motor and the turbine screw mechanism are both provided with a first synchronous wheel and a second synchronous wheel, and the synchronous belt is sleeved on the first synchronous wheel and the second synchronous wheel. The input end of the turbine screw mechanism is connected to the output end of the lifting motor, and the output end of the turbine screw mechanism is connected to the screw assembly. The turbine screw mechanism is driven by the lifting motor to change the output direction. The turbine screw mechanisms on both sides of the needle bed frame are connected by a connecting rod to realize synchronous lifting of both sides of the lifting frame.

[0009] In the above structure, a negative pressure forming needle bed also includes a plurality of support columns; one end of the support column is fixedly mounted on the bottom of the needle bed frame, and the other end supports the material tray.

[0010] In the above structure, a level sensor is provided on the side of the support column.

[0011] In the above structure, positioning pins are provided at both ends of the lifting frame.

[0012] In the above structure, a proximity switch is also provided next to the positioning pin of the lifting frame.

[0013] In the above structure, the negative pressure forming needle bed also includes an anti-foolproof rod, which is installed at the bottom of the needle bed frame, and one end of the material tray is provided with a groove matching the position of the anti-foolproof rod.

[0014] In the above structure, a plurality of positioning blocks are provided on the lifting frame to form a space just enough to accommodate the material tray.

[0015] In the above structure, the negative pressure forming needle bed further includes a support block, and the support block is fixedly connected to the top end of the support column.

[0016] The beneficial effects of the utility model are: using a stepper motor instead of a traditional cylinder drive method makes equipment debugging more convenient and can ensure synchronization of pressing on both sides, thereby more accurately controlling the pressing depth of the current probe and the battery pole. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of a negative pressure forming needle bed of the utility model;

[0018] Figure 2 The utility model is a partial structural schematic diagram of a negative pressure forming needle bed. DETAILED DESCRIPTION

[0019] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0020] The following will clearly and completely describe the concept, specific structure and technical effects of the utility model in combination with the embodiments and drawings, so as to fully understand the purpose, characteristics and effects of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of them. Based on the embodiments of the utility model, other embodiments obtained by technicians in this field without creative work are all within the scope of protection of the utility model. In addition, all the connection / connection relationships involved in the patent do not refer to the direct connection of components, but refer to the formation of a better connection structure by adding or reducing connection accessories according to the specific implementation situation. The various technical features in the creation of the utility model can be combined interchangeably without conflicting with each other.

[0021] Reference Figure 1 to Figure 2 As shown, the utility model discloses a negative pressure forming needle bed. Specifically, the device includes a needle bed frame 10, a current probe assembly 20, a negative pressure assembly 40 and a tray lifting assembly 30;

[0022] The current probe assembly 20 and the negative pressure assembly 40 are fixedly mounted on the top of the needle bed frame 10, and the material tray lifting assembly 30 is mounted on the bottom of the needle bed frame 10. The material tray 120 is lifted and lowered by the material tray lifting assembly 30, so that the batteries in the material tray 120 are connected to the current probe assembly 20 and the negative pressure assembly 40, and a negative pressure formation process is performed; the material tray lifting assembly 30 includes a guide rod 301, a lifting frame 302, and a lifting motor 303, the two ends of the multiple guide rods 301 are respectively fixedly connected to the top and bottom of the needle bed frame 10, the lifting motor is arranged on the lower side of the needle bed frame 10, the lifting frame 302 is slidably connected to the guide rod 301, and a screw assembly 3031 is provided on the lifting motor 303, and the lifting frame 302 is fixedly connected to the screw nut on the screw assembly 3031, and the lifting frame 302 is driven by the lifting motor 303 to realize the lifting of the material tray 120.

[0023] Furthermore, the material tray lifting assembly also includes a turbine screw mechanism 3032, a connecting rod 3033 and a synchronous belt 3034; the lifting motor 303 is installed at the bottom of the needle bed frame 10, and the turbine screw mechanism 3032 is installed on both sides of the needle bed frame 10. The lifting motor 303 and the turbine screw mechanism 3032 are both provided with a first synchronous wheel 3035 and a second synchronous wheel 3035. The synchronous belt 3034 is sleeved on the first synchronous wheel 3035 and the second synchronous wheel 3035. The input end of the turbine screw mechanism 3032 is connected to the output end of the lifting motor 303, and the output end of the turbine screw mechanism 3032 is connected to the screw assembly 3031. The turbine screw mechanism 3032 is driven by the lifting motor 303 to convert the output direction. The turbine screw mechanisms on both sides of the needle bed frame are connected by a connecting rod 3033 to realize the synchronous lifting of the two sides of the lifting frame 302. The turbine screw has the following two main characteristics: first, it converts the high-speed rotation of the driving power supply into a low-speed, high-torque rotation, that is, speed reduction and torque amplification; second, it changes the direction of the rotation axis, that is, realizes the spatial direction change of the rotation. The turbine worm has the characteristics of smooth transmission, low noise, and high overload resistance. So in this solution, the turbine screw mechanism 3032 has higher transmission efficiency and reduces energy consumption compared to the conventional direct screw transmission method. The turbine screw mechanism 3032 cooperates with the lifting motor 303 to ensure the stability of the equipment during operation and reduce the error caused by asynchronous lifting.

[0024] Furthermore, a negative pressure forming needle bed also includes a plurality of support columns 50, one end of the support column 50 is fixedly mounted on the bottom of the needle bed frame 10, and the other end supports the material tray 120. During the lifting and lowering process of the material tray 120, the support column 50 not only plays an important supporting role for the material tray 120, but also prevents the material tray 120 from excessively falling or tilting, thereby ensuring that the material tray 120 is level. The negative pressure forming needle bed also includes a support block 110, and the support block 110 is fixedly connected to the top of the support column 50. The provision of the support block 110 enables the support column 50 to withstand heavier loads and support or carry more battery cells.

[0025] In precision equipment such as negative pressure needle beds, the levelness of the tray 120 is crucial to the correctness of the operation and the accuracy of the results. The level sensor 60 can monitor the levelness of the tray 120 in real time and correct it in time, effectively ensuring the accuracy of the operation. The side of the support column 50 is provided with a level sensor 60 to measure whether the tray 120 is level. Both ends of the lifting frame 302 are provided with positioning pins 70, and a proximity switch is also provided next to the positioning pins 70 of the lifting frame 302. The positioning pins 70 can help accurately determine and control the placement positions of the two ends of the tray 120 to ensure that the positions of the two ends of the tray 120 remain unchanged during the lifting movement. The proximity switch 80 can automatically detect whether the cooperation between the tray 120 and the positioning pins 70 is normal. Through the positioning pins 70 and the proximity switch 80, the front and rear positions of the tray 120 can be effectively controlled to ensure the stability of the equipment during operation. The lifting frame 302 is provided with a plurality of positioning blocks 100 to form a space that just accommodates the tray 120. The presence of the positioning block 100 can further ensure that the material tray 120 is positioned accurately during the lifting process, avoid operational errors caused by inaccurate positioning of the material tray 120, and improve the working accuracy of the equipment.

[0026] Furthermore, the negative pressure formation needle bed also includes an anti-idiot rod 90, which is installed at the bottom of the needle bed frame 10, and one end of the material tray 120 is provided with a groove that matches the position of the anti-idiot rod 90. The material tray 120 can only be laid flat when the anti-idiot rod 90 is inserted into the groove to prevent the material tray 120 from being placed upside down. The setting of the anti-idiot rod 90 greatly simplifies the operating process, so that the operator does not need to spend too much energy to judge and confirm the direction of the material tray 120. The setting of the anti-idiot rod 90 and the groove can ensure the correct placement of the material tray 120, so as to ensure that the batteries in the material tray 120 can operate normally in the negative pressure formation process, thereby ensuring the quality of the product.

[0027] The fully loaded battery tray 120 is placed on the support column 50, and the foolproof rod 90 detects whether it is placed in the right direction or in the wrong direction. After the detection is correct, the tray lifting assembly 30 lifts the battery tray 120 up until it contacts the current probe assembly 20 and the negative pressure assembly 40, and stops after pressing to the appropriate position to carry out the formation process. During the pressing process, it can be adjusted according to the height of the battery, which is convenient and flexible to use.

[0028] The beneficial effects of the utility model are: using a stepper motor instead of a traditional cylinder drive method makes equipment debugging more convenient and can ensure synchronization of pressing on both sides, thereby more accurately controlling the pressing depth of the current probe and the battery pole.

[0029] The above is a specific description of the preferred implementation of the utility model, but the invention of the utility model is not limited to the described embodiments. Technical personnel familiar with the field can also make various equivalent deformations or substitutions without violating the spirit of the utility model. These equivalent deformations or substitutions are all included in the scope defined by the claims of this application.

Claims

1. A negative pressure forming needle bed, characterized in that: It includes a needle bed frame, a current probe assembly, a negative pressure assembly and a tray lifting assembly; The current probe assembly and the negative pressure assembly are fixedly mounted on the top of the needle bed frame, and the material tray lifting assembly is mounted on the bottom of the needle bed frame. The material tray is lifted by the material tray lifting assembly to connect the battery in the material tray with the current probe assembly and the negative pressure assembly to perform a negative pressure forming process; the material tray lifting assembly includes a guide rod, a lifting frame, and a lifting motor, the two ends of the multiple guide rods are respectively fixedly connected to the top and bottom of the needle bed frame, the lifting motor is arranged on the lower side of the needle bed frame, the lifting frame is slidably connected to the guide rod, a screw assembly is provided on the lifting motor, the lifting frame is fixedly connected to the screw assembly, and the lifting frame is driven by the lifting motor to realize the lifting of the material tray.

2. The negative pressure forming needle bed according to claim 1, characterized in that: The material tray lifting assembly also includes a turbine screw mechanism, a connecting rod, and a synchronous belt; the lifting motor is installed at the bottom of the needle bed frame, and the turbine screw mechanism is installed on both sides of the needle bed frame. The lifting motor and the turbine screw mechanism are both provided with a first synchronous wheel and a second synchronous wheel, and the synchronous belt is sleeved on the first synchronous wheel and the second synchronous wheel. The input end of the turbine screw mechanism is connected to the output end of the lifting motor, and the output end of the turbine screw mechanism is connected to the screw assembly. The turbine screw mechanism is driven by the lifting motor to convert the output direction. The turbine screw mechanisms on both sides of the needle bed frame are connected by a connecting rod to realize synchronous lifting of both sides of the lifting frame.

3. The negative pressure forming needle bed according to claim 1, characterized in that: A negative pressure forming needle bed also includes a plurality of support columns; one end of the support column is fixedly installed at the bottom of the needle bed frame, and the other end plays a supporting role for the material tray.

4. The negative pressure forming needle bed according to claim 3, characterized in that: A level sensor is provided on the side of the support column.

5. The negative pressure forming needle bed according to claim 1, characterized in that: Both ends of the lifting frame are provided with positioning pins.

6. The negative pressure forming needle bed according to claim 5, characterized in that: A proximity switch is also arranged beside the positioning pin of the lifting frame.

7. The negative pressure forming needle bed according to claim 5, characterized in that: The negative pressure forming needle bed also includes an anti-foolproof rod, which is installed at the bottom of the needle bed frame, and one end of the material tray is provided with a groove matching the position of the anti-foolproof rod.

8. The negative pressure forming needle bed according to claim 1, characterized in that: The lifting frame is provided with a plurality of positioning blocks to form a space just enough to accommodate the material tray.

9. The negative pressure forming needle bed according to claim 3, characterized in that: The negative pressure forming needle bed also includes a support block, and the support block is fixedly connected to the top of the support column.

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