Riveting equipment

Abstract

The utility model relates to the field of riveting equipment, in particular to riveting equipment, which is provided with an execution end and an extrusion mechanism, the extrusion mechanism is formed in a way that a rod part with negative pressure formed on the end surface moves in a channel formed in a negative pressure piece, and the extrusion mechanism is used for sending the end surface of the rod part out of the negative pressure piece and fixing a steel ball on the rod part through the negative pressure, a negative pressure flow channel communicated with negative pressure airflow is formed in a smooth area where the rod part shrinks inwards in the channel, and after the negative pressure machine abuts against the periphery of the liquid injection hole, the power battery is vacuumized through a relative sub-posture between the liquid injection hole and the through hole; the utility model provides the equipment capable of riveting the steel ball on the liquid injection hole, and meanwhile, the negative pressure piece cooperatively used with the rod part in the equipment can vacuumize the interior of the power battery, that is, the execution end of the riveting equipment is also integrated with a vacuumizing function, so that the structure of the whole riveting equipment is in a simple form.

Description

Technical Field

[0001] The utility model relates to a field, in particular to a riveting device. Background Art

[0002] In the preparation process of power batteries, there is a sealing process. Specifically, the power battery needs to be sealed after the liquid injection process.

[0003] The conventional sealing process is to plug the injection hole on the power battery with glue nails, then place the aluminum sheet on the glue nails, and then use laser welding to fix the aluminum sheet to the outer shell of the power battery.

[0004] However, the combined costs of the rubber nails, aluminum sheets and laser welding account for too high a proportion of the entire battery production cost. It is not difficult to see that the traditional sealing mechanism is not conducive to the development of the industry. At present, one of the improvement solutions to the above problems is to rivet steel balls into the injection holes. However, there is currently a lack of equipment that can drive steel balls. At the same time, this equipment is also required to have a vacuum function to ensure that the interior of the power battery is in a negative pressure state before the steel balls are driven. Utility Model Content

[0005] In order to solve the above problems, the utility model provides a riveting device, which can draw negative pressure to the power battery and can also rivet the steel ball into the injection hole.

[0006] To achieve the above-mentioned purpose, the technical solution adopted by the utility model is: a riveting device, characterized in that it has an execution end, including an extrusion mechanism composed of a rod with negative pressure formed on the end face moving in a channel formed inside the negative pressure part, which is used to send the end face of the rod to the outside of the negative pressure part and fix the steel ball to the rod by negative pressure, wherein the channel has a negative pressure flow channel connected to the negative pressure airflow in the area where the rod is retracted inward and presents a smooth flow, and after the negative pressure machine is against the periphery of the injection hole, the power battery is vacuumed through the relative posture between the injection hole and the through hole.

[0007] Furthermore, it also includes a material preparation part, and the execution end also has a linear moving mechanism that drives the extrusion mechanism to move back and forth between the material preparation part and the power battery.

[0008] Furthermore, the material preparation part includes a material bin and a material ejecting mechanism. The material ejecting mechanism has a longitudinally movable material ejecting rod that overlaps the bottom of the material bin, and the top of the material ejecting rod has a concave surface that matches the shape of a steel ball.

[0009] Furthermore, the bottom of the silo is a funnel structure.

[0010] Furthermore, at least one group of sensors is provided in the silo, and the sensors are respectively located at the bottom of the silo and above the top of the silo.

[0011] Furthermore, the ejecting mechanism also includes a lifting cylinder, and the ejecting rod is connected to the piston rod of the lifting cylinder.

[0012] Furthermore, a vacuum channel with negative pressure formed on the end surface extends to the bottom surface of the lower pressure rod, and the upper end of the vacuum channel also extends to the top of the upper pressure rod.

[0013] Beneficial effects of the utility model:

[0014] The utility model provides a device capable of riveting a steel ball on a liquid injection hole. At the same time, a negative pressure piece used in conjunction with a rod in the device can evacuate the interior of a power battery. That is to say, the execution end of the utility model also integrates a vacuuming function, so that the structure of the entire riveting device is in a simple form. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a stereogram of the utility model.

[0016] Figure 2 yes Figure 1 Usage status diagram.

[0017] Figure 3 It is a three-dimensional diagram of the material preparation part.

[0018] Figure 4 yes Figure 3 Another perspective view.

[0019] Figure 5 yes Figure 4 An enlarged schematic diagram of point A.

[0020] Figure 6 yes Figure 3 sectional view of .

[0021] Figure 7 yes Figure 6 An enlarged schematic diagram of point B.

[0022] Figure 8 It is a three-dimensional diagram of the battery cell.

[0023] Fig. 9 This is an enlarged schematic diagram of point C.

[0024] Fig.10 It is a three-dimensional diagram of the execution end.

[0025] Fig.11 yes Fig.10 sectional view of .

[0026] Fig.12 yes Fig.11 Enlarged schematic diagram of point D.

[0027] Fig.13 yes Fig.12 Enlarged schematic diagram of point E. DETAILED DESCRIPTION

[0028] This embodiment is a riveting device, which includes two parts:

[0029] like Figure 1-13 As shown, the material preparation part N and the execution end M;

[0030] The preparation part N is used to store a large number of steel balls G and to deliver the steel balls G in an orderly manner.

[0031] The execution end M is used to receive the steel balls G sent out in an orderly manner, and rivet the steel balls G to the injection holes 1 a on the battery core 1 .

[0032] As can be seen from the figure, the material preparation part N includes a feeding mechanism 2 and a silo 3 from bottom to top. The bottom of the silo 3 is a funnel structure S, and the feeding mechanism 2 has a longitudinally movable feeding rod 200 that overlaps the central area of ​​the bottom of the silo 3. The top of the feeding rod 200 has a concave surface 200' that fits the shape of the steel ball G. The concave surface 200' allows the steel ball G to be stably maintained on the top of the feeding rod 200. The advantage of this structure is that it can screen out a steel ball G from a large number of steel balls G in the silo 3 and send it out, which is efficient and has a relatively ingenious structure.

[0033] In this embodiment, a group of sensors 400 are provided in the silo 3, and the sensors 400 are respectively located at the bottom of the silo 3 and above the top of the silo 3. This is to measure the capacity of the steel balls G in the silo 3. When the number of steel balls G exceeds the upper sensing ray, combined with an external feeding device (not shown in the figure), it is judged that the feeding amount of the steel balls G meets the maximum capacity of the silo 3; similarly, when the number of steel balls G is lower than the detection ray of the sensor 400 at the bottom of the silo 3, it is judged that the amount of steel balls G is less than the minimum value of normal feeding.

[0034] The above determination function is realized through the built-in function of the host computer after the signal transmission between the sensor 400 and the external host computer.

[0035] The ejection mechanism 2 further comprises an ejection cylinder 201 , and the ejection rod 200 is connected to the piston rod of the ejection cylinder 201 .

[0036] The actuator end M includes a linear moving mechanism and an extrusion mechanism 6. The extrusion mechanism 6 includes a downward pressure cylinder 601, a negative pressure member 602, and a downward pressure rod 603. The negative pressure member 602 is provided with a channel 602' for the downward pressure rod 603 to pass through. The downward pressure cylinder 601 is located above the negative pressure member 602. The piston rod of the downward pressure cylinder 601 is connected to the downward pressure rod 603. Under the action of the downward pressure cylinder 601, the downward pressure rod 603 performs an up and down reciprocating motion in the channel 602'. When the downward pressure rod 603 retracts into the channel 602', at least one section of the lower part of the channel 602' is unobstructed. On the surface of the negative pressure member 602 corresponding to the above-mentioned area, a first negative pressure flow channel 604 is provided, which is used to inject liquid into the injection hole 1a of the power battery. The entire extrusion mechanism 6 is assembled to the output end of the linear moving mechanism, and the linear moving mechanism has multiple dimensional moving directions (including but not limited to XYZ directions). Through the linear moving mechanism, the entire negative pressure member 602 is against the outer shell of the battery cell 1, so that the channel 602' and the injection hole 1a are opposite to each other. After the downward pressure cylinder 601 controls the downward pressure rod 603 to retract into the channel 602', the negative pressure device connected to the first negative pressure flow channel 604 is started. The first negative pressure flow channel 604 and the unblocked channel 602' form a negative pressure flow channel to evacuate the inside of the battery (the evacuation here should be understood as less than normal pressure, but not to reach a pressure value that extracts the electrolyte inside the battery);

[0037] When riveting is required, the piston rod of the pressing cylinder 601 drives the pressing rod 603 to move downward, squeezing the steel ball G at the bottom of the pressing rod 603 into the injection hole 1a, and the vacuum channel in the pressing rod 603 extends to the bottom surface of the pressing rod 603, that is, the steel ball G is constrained to the bottom of the pressing rod 603 in the form of negative pressure, and the upper end of the vacuum channel also extends to the top of the pressing rod 603 and is connected to other negative pressure pipes.

[0038] It can be seen from this that the utility model provides a device that can rivet the steel ball G on the injection hole 1a. At the same time, the negative pressure piece 602 used in conjunction with the lower pressure rod 603 in this device can evacuate the interior of the power battery. In other words, the execution end M of the utility model also integrates the vacuum function, so that the structure of the entire riveting device is in a simple form.

[0039] In this embodiment, the linear moving mechanism is composed of a lifting cylinder 500 and a lateral moving component 501. The lifting cylinder 500 is installed on the movable end of the lateral moving component 501. The extrusion mechanism 6 includes a mounting base. The mounting base 61 is installed on the output end of the lifting cylinder 500. The downward pressure cylinder 601 and the negative pressure member 602 are assembled on the mounting base 61.

[0040] The use principle of the utility model is:

[0041] S1, the ejector rod 200 ejects the steel ball G from the silo 3 through the ejector cylinder, so that the steel ball G is separated from the silo 3 and placed above the silo 3;

[0042] S2, the linear moving mechanism drives the actuator M to move above the material preparation part N, and in the next multiple actions of the linear moving mechanism, the position of the pressing rod 603 is adjusted to above the steel ball G (at this time, the bottom of the pressing rod 603 is pushed through the bottom of the negative pressure member 602 by the pressing cylinder 601), and the pressing rod 603 is in contact with the steel ball G;

[0043] S3, the negative pressure pipeline forms a negative pressure airflow through the external negative pressure equipment, and the negative pressure airflow of the vacuum flow channel steadily adsorbs the steel ball G on the bottom of the lower pressure rod 603.

[0044] S4, at this time, the pressing rod 603 enters the channel 602' through the retraction of the pressing cylinder 601, and the steel ball G is also located inside the channel 602';

[0045] S5, the linear moving mechanism works again, moving from the material preparation part N to the power battery;

[0046] S6, the linear moving mechanism drives the entire extrusion mechanism 6 to move toward the injection hole 1a on the surface of the power battery until the bottom of the negative pressure member 602 abuts against the upper surface of the power battery, blocking the gas exchange between the injection hole 1a and the outside, and the channel 602' in the negative pressure member 602 is opposite to the injection hole 1a;

[0047] S7, the first negative pressure flow channel 604 is connected to the negative pressure airflow of other negative pressure equipment to perform vacuum treatment on the inside of the power battery.

[0048] S8, next, the pressing rod 603 moves toward the liquid injection hole 1a through the pressing cylinder 601 until the steel ball G is pressed into the liquid injection hole 1a, thereby completing the sealing of the power battery.

[0049] The above implementation modes are merely descriptions of the preferred implementation modes of the present invention, and are not intended to limit the scope of the present invention. Without departing from the design spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by ordinary engineering and technical personnel in the field shall fall within the protection scope determined by the claims of the present invention.

Claims

1. A riveting device, characterized in that: It has an execution end, including an extrusion mechanism composed of a rod with negative pressure formed on the end face moving in a channel formed inside the negative pressure piece, which is used to send the end face of the rod to the outside of the negative pressure piece and fix the steel ball to the rod by negative pressure. In the channel, there is a negative pressure flow channel connected to the negative pressure airflow in the area where the rod is retracted inward and presents a smooth flow. After the negative pressure machine is against the periphery of the injection hole, the power battery is vacuumed through the relative posture between the injection hole and the through hole.

2. A riveting device according to claim 1, characterized in that: It also includes a material preparation part, and the execution end also has a linear moving mechanism that drives the extrusion mechanism to move back and forth between the material preparation part and the power battery.

3. A riveting device according to claim 2, characterized in that: The material preparation part includes a material bin and a material ejecting mechanism. The material ejecting mechanism has a longitudinally movable material ejecting rod which overlaps the bottom of the material bin, and the top end of the material ejecting rod has a concave surface adapted to the shape of a steel ball.

4. A riveting device according to claim 3, characterized in that: The bottom of the silo is a funnel structure.

5. The riveting equipment according to claim 3, characterized in that: At least one set of sensors is arranged in the silo, and the sensors are respectively located at the bottom of the silo and above the top of the silo.

6. The riveting equipment according to claim 3, characterized in that: The jacking mechanism also includes a jacking cylinder, and the jacking rod is connected with the piston rod of the jacking cylinder.

7. The riveting equipment according to claim 1, characterized in that: The end surface is formed with a vacuum flow channel in the rod portion with negative pressure, which extends to the bottom surface of the lower pressure rod, and the upper end of the vacuum flow channel also extends to the top of the upper pressure rod.

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