Pre-pressing nail suction head structure

Abstract

The utility model discloses a pre-pressing nail suction head structure, which comprises a suction head main body, an ejector pin, a suction nozzle and an air pipe elbow, an air channel is arranged in the suction head main body, the air pipe elbow is arranged at the side end of the suction head main body, and the air pipe elbow is communicated with the upper end of the air channel. The suction nozzle is connected to the lower end of the suction head body and communicated with the lower end of the air channel, the ejector pin is arranged in the air channel, and the lower end of the ejector pin is arranged in the suction nozzle in a penetrating mode. According to the pre-pressing nail suction head structure, the built-in ejector pin is adopted, so that the structure is simple, no additional mechanism is needed, the reliability is high, the dredging effect is good, and the cost is low.

Description

Technical Field

[0001] The utility model relates to the technical field of liquid injection machines, and particularly relates to a pre-pressing nail suction head structure. Background Art

[0002] At present, the nail picking method of the pre-pressing nail module of the square shell battery liquid injection machine is to use a manipulator and add a suction head at the head end to cooperate with negative pressure to complete one-time nail picking. When the manipulator moves above the battery liquid injection port, the manipulator presses down to break the vacuum to complete one-time nail pressing. The existing problem is that due to the particularity of the electrolyte, after running for a period of time, the electrolyte remaining at the liquid injection port is at the suction head port. After the electrolyte crystallizes, it will block the suction head and make the suction head lose its function, seriously affecting the production of the battery core.

[0003] The existing treatment methods for the crystallization of the electrolyte by the nail suction nozzle include the following several types: The first method is to soak with DEC liquid and then blow in a positive pressure and reverse direction; the second method is to replace the suction nozzle through a suction nozzle replacement platform, replace the blocked suction nozzle, and then manually dredge the suction nozzle; the third method is to use an external acupuncture platform to dredge after blocking. However, in the first method, the soaking effect is poor after the electrolyte crystallizes, and the dredging effect of the suction nozzle is poor; the second method requires adding a suction nozzle replacement platform, and the time is long, affecting the production efficiency; the third method requires installing an acupuncture platform with high precision, which has a high cost and poor reliability.

[0004] Therefore, it is necessary to provide a pre-pressing nail suction head structure to solve the above problems. Summary of the Utility Model

[0005] In order to overcome the deficiencies of the prior art, the utility model provides a pre-pressing nail suction head structure, which adopts an internal thimble, has a simple structure, does not require adding new mechanisms, has high reliability, good dredging effect, and low cost.

[0006] The technical solution adopted by the utility model to solve its technical problems is:

[0007] A pre-pressing nail suction head structure includes a suction head main body, a thimble, a suction nozzle and a tracheal elbow. An air passage is arranged in the suction head main body. The tracheal elbow is arranged at the side end of the suction head main body and is communicated with the upper end of the air passage. The suction nozzle is connected to the lower end of the suction head main body and is communicated with the lower end of the air passage. The thimble is arranged in the air passage, and the lower end of the thimble penetrates into the suction nozzle.

[0008] As a further improvement of the above technical solution, an inner clamping groove is arranged at the lower end of the suction head main body, and the upper end of the suction nozzle is clamped in the inner clamping groove.

[0009] As a further improvement of the above technical solution, a guiding piece is further arranged at the upper end of the suction nozzle. A through hole is arranged in the middle of the guiding piece, and the thimble penetrates through the through hole.

[0010] As a further improvement of the above technical solution, the guiding piece is arranged in a triangular structure, and a ventilation opening is formed between the guiding piece and the inner wall of the gas passage.

[0011] As a further improvement of the above technical solution, a clamping block is arranged at the upper end of the suction nozzle, the guiding piece is arranged above the clamping block, and the clamping block is clamped in the inner clamping groove.

[0012] As a further improvement of the above technical solution, a sealing groove is further arranged at the lower end of the suction head body, a sealing member is arranged in the sealing groove, and the sealing member is hermetically connected between the suction head body and the suction nozzle.

[0013] As a further improvement of the above technical solution, a nut is arranged outside the suction nozzle, and the nut is tightly connected to the outer part of the lower end of the suction head body.

[0014] As a further improvement of the above technical solution, the suction nozzle is provided with a connecting block, the lower end of the nut is provided with an installation limit, the suction nozzle is inserted into the nut, and the connecting block is arranged above the installation limit.

[0015] As a further improvement of the above technical solution, the ejector pin includes a pin body and a pin head, a suction nail hole is arranged at the lower end of the suction nozzle, the diameter of the pin body is larger than the diameter of the suction nail hole, and the diameter of the pin head is smaller than the diameter of the suction nail hole.

[0016] As a further improvement of the above technical solution, a conical cavity is arranged inside the suction nozzle, the upper end of the conical cavity is communicated with the gas passage, the lower end of the conical cavity is communicated with the suction nail hole, the pin head is arranged as a conical pin head, and the conical pin head is inserted into the conical cavity.

[0017] The beneficial effects of the present utility model are as follows:

[0018] By simply optimizing the structure of the suction head, the present utility model adds an ejector pin inside the original structure of the suction head. Utilizing the principle of the telescopic cylinder and through air pressure switching, the ejector pin will not fall off during normal nail suction to affect the nail suction operation, and when the suction nail hole of the suction nozzle is blocked by the crystallization of residual electrolyte, the ejector pin can be pushed out to penetrate the suction nozzle to achieve a good dredging effect, thereby avoiding the blockage of the suction nozzle and reducing the probability of the pre-pressed nail having poor nail suction resulting in the NG of the battery cell. Description of the Drawings

[0019] The present utility model will be further described below in conjunction with the drawings and embodiments.

[0020] Figure 1 It is a three-dimensional schematic diagram of the structure of the pre-pressed nail suction head of the present utility model;

[0021] Figure 2 is a schematic cross-sectional structure diagram of the pre-pressing nail suction head structure of the present utility model;

[0022] Figure 3 is Figure 2 an enlarged view of part A in

[0023] Figure 4 is a schematic exploded structure diagram of the pre-pressing nail suction head structure of the present utility model.

[0024] Reference numerals: 1, suction head main body; 11, air passage; 12, inner card slot; 13, sealing groove; 2, thimble; 21, needle body; 22, needle tip; 3, suction nozzle; 31, clamping block; 32, connecting block; 33, nail suction hole; 34, conical cavity; 4, tracheal elbow; 5, guide piece; 51, through hole; 6, seal; 7, nut; 71, installation limit. Specific embodiments

[0025] The following will clearly and completely describe the concept, specific structure and technical effects generated by the present utility model in combination with the embodiments and the drawings, so as to fully understand the purpose, features and effects of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all embodiments. Based on the embodiments of the present utility model, other embodiments obtained by those skilled in the art without creative efforts shall fall within the scope of protection of the present utility model. In addition, all connection / connection relationships involved in the patent do not refer only to the direct connection of components, but refer to the more optimal connection structure that can be formed by adding or reducing connection accessories according to the specific implementation situation. For example, fixed connection / fixed installation can be selected from screw connection, bolt connection, pin connection, key connection, bonding, tenon and mortise connection, welding, riveting and other methods according to needs. For example, detachable connection can be selected from screw connection, bolt connection, threaded connection, snap connection, tenon and mortise connection, magic tape connection and other methods. Each technical feature in the creation of the present utility model can be combined interactively without conflicting with each other.

[0026] Refer to Figure 1 、 Figure 2, a pre-pressed nail suction head structure, including a suction head body 1, a thimble 2, a suction nozzle 3 and an air pipe elbow 4. Among them, an air passage 11 is arranged inside the suction head body 1, the thimble 2 is installed in the air passage 11, the suction nozzle 3 is connected to the lower end of the suction head body 1, and the lower end of the thimble 2 penetrates into the suction nozzle 3. At the same time, the air pipe elbow 4 is arranged at the side end of the suction head body 1, and the air pipe elbow 4 is used to connect the air source. The air pipe elbow 4 is communicated with the upper end of the air passage 11, and the suction nozzle 3 is communicated with the lower end of the air passage 11. During operation, the air source inputs negative pressure through the air pipe elbow 4 so that the suction head sucks the glue nails at the suction nozzle 3. At this time, the thimble 2 will not extend out due to the negative pressure and will not affect the nail suction operation at all. When there is a risk of crystallization of the electrolyte after sucking nails in a cycle for a certain number of times, the air source inputs positive pressure through the air pipe elbow 4 to push the thimble 2 out of the suction nozzle 3 to achieve the dredging effect, thereby avoiding the blockage of the suction nozzle 3 and reducing the probability of the pre-pressed nails having poor nail suction and causing the battery core to be NG.

[0027] Refer to Figures 2 to 4 , in the embodiment of the present invention, an inner card slot 12 is arranged at the lower end of the suction head body 1, and the upper end of the suction nozzle 3 is clamped in the inner card slot 12, so that the suction nozzle 3 is connected to the lower end of the suction head body 1; a clamping block 31 is arranged at the upper end of the suction nozzle 3, and the clamping block 31 is clamped in the inner card slot 12 for preliminary positioning connection. At the same time, the suction nozzle 3 is provided with a connecting block 32, a nut 7 is arranged outside the suction nozzle 3, an installation limit 71 is arranged at the lower end inside the nut 7, the suction nozzle 3 penetrates through the nut 7, and the connecting block 32 is arranged above the installation limit 71. An external thread is also arranged at the lower end of the suction head body 1, and an internal thread is arranged on the nut 7. The internal thread is engaged with the external thread, so that the suction nozzle 3 is locked and connected to the outside of the lower end of the suction head body 1 through the nut 7, which is convenient for assembly; and when cleaning the suction nozzle 3, only need to unscrew the nut 7, and the installation and disassembly are convenient and fast.

[0028] Specifically, a guiding piece 5 is also arranged at the upper end of the suction nozzle 3. The guiding piece 5 is arranged above the clamping block 31. A through hole 51 is arranged in the middle of the guiding piece 5, and the thimble 2 penetrates through the through hole 51, so that the guiding piece 5 plays a certain guiding role for the thimble 2 to ensure that the thimble 2 is accurately pushed out of the suction nozzle 3 to achieve a good dredging effect; the guiding piece 5 is arranged in a triangular structure, and a ventilation port is formed between the guiding piece 5 and the inner wall of the air passage 11, which can ensure the air flow and ensure the effect of negative pressure nail suction.

[0029] Specifically, a sealing groove 13 is further provided at the lower end of the suction head body 1. A seal 6 is arranged in the sealing groove 13, and the seal 6 is sealingly connected between the suction head body 1 and the suction nozzle 3 to ensure that the connection between the suction nozzle 3 and the suction head body 1 is completely sealed, avoiding air leakage and affecting the nail suction effect.

[0030] Referring Figure 3 , in the embodiment of the present utility model, the ejector pin 2 includes a pin body 21 and a pin head 22. A nail suction hole 33 is provided at the lower end of the suction nozzle 3. The diameter of the pin body 21 is larger than the diameter of the nail suction hole 33, and the diameter of the pin head 22 is smaller than the diameter of the nail suction hole 33, ensuring that only the pin head 22 part of the ejector pin 2 extends out each time, preventing the ejector pin 2 from falling out and ensuring the normal progress of the dredging work of the suction nozzle 3.

[0031] Specifically, a tapered cavity 34 is arranged inside the suction nozzle 3. The upper end of the tapered cavity 34 is communicated with the air passage 11, and the lower end of the tapered cavity 34 is communicated with the nail suction hole 33. The tapered design helps the smooth flow of air, and plays a certain guiding and accelerating role for the ejector pin 2; the nail suction hole 33, the through hole 51 of the guiding piece 5 and the ejector pin 2 are on the same central axis, and the ejector pin 2 is accurately pushed out from the nail suction hole 33 of the suction nozzle 3 through positive pressure to achieve the dredging effect; the pin head 22 is arranged as a tapered pin head, and the tapered pin head is inserted into the tapered cavity 34, so that the mating surface of the pin head 22 is larger, increasing the stability of the telescopic movement of the ejector pin 2.

[0032] Working principle of the present utility model: The pre-pressing and nail suction structure of this embodiment is mainly applied to the pre-pressing nail module equipment of the square shell battery liquid injection machine. When the battery cell after the previous liquid injection reaches the pre-pressing nail station, the manipulator head sucks the glue nail to the liquid injection port of the battery cell and presses the nail up and down to complete the nail pressing work. And because only negative pressure is used for the nail suction action, the ejector pin 2 will not fall out during normal work and does not affect the nail suction operation; after several groups of production, the electrolyte remaining at the nail suction hole 33 of the suction nozzle 3 will crystallize and block the suction nozzle 3, causing the suction head to lose its function. At this time, the positive pressure output can be switched to make the ejector pin 2 push out from the nail suction hole 33 of the suction nozzle 3 to achieve the effect of penetrating the suction nozzle 3, thereby effectively dredging the suction nozzle 3, avoiding the situation of poor nail suction caused by the blockage of the suction nozzle due to electrolyte crystallization, and reducing the probability of the battery cell being NG due to poor nail suction during pre-pressing.

[0033] The above is a specific description of the preferred embodiment of the present utility model, but the present invention is not limited to the above embodiment. Those skilled in the art can make various equivalent deformations or substitutions without departing from the spirit of the present utility model, and these equivalent deformations or substitutions are all included in the scope defined by the claims of this application.

Claims

1. A pre-pressed nail suction head structure, characterized in that: It includes a suction head body, a thimble, a suction nozzle and a tracheal elbow. An air passage is provided in the suction head body. The tracheal elbow is provided at the side end of the suction head body and is communicated with the upper end of the air passage. The suction nozzle is connected to the lower end of the suction head body and is communicated with the lower end of the air passage. The thimble is arranged in the air passage, and the lower end of the thimble penetrates into the suction nozzle.

2. The pre-pressing nail suction head structure according to claim 1, wherein: An inner clamping groove is provided at the lower end of the suction head body, and the upper end of the suction nozzle is clamped in the inner clamping groove.

3. The pre-pressing nail suction head structure according to claim 2, characterized in that: A guiding piece is further provided at the upper end of the suction nozzle. A through hole is provided in the middle of the guiding piece, and the thimble penetrates through the through hole.

4. The pre-pressing nail suction head structure according to claim 3, characterized in that: The guiding piece is arranged in a triangular structure, and a ventilation port is formed between the guiding piece and the inner wall of the air passage.

5. The pre-pressing nail suction head structure according to claim 3, characterized in that: A clamping block is provided at the upper end of the suction nozzle. The guiding piece is arranged above the clamping block, and the clamping block is clamped in the inner clamping groove.

6. The pre-pressing nail suction head structure according to claim 1, characterized in that: A sealing groove is further provided at the lower end of the suction head body. A sealing member is arranged in the sealing groove, and the sealing member is hermetically connected between the suction head body and the suction nozzle.

7. The pre-pressing nail suction head structure according to claim 1, wherein: A nut is provided outside the suction nozzle, and the nut is tightly connected to the outside of the lower end of the suction head body.

8. A pre-pressing nail suction head structure according to claim 7, characterized in that: The suction nozzle is provided with a connecting block. An installation limit is provided at the lower end of the nut. The suction nozzle penetrates through the nut, and the connecting block is arranged above the installation limit.

9. The pre-pressing nail suction head structure according to claim 1, characterized in that: The thimble includes a needle body and a needle head. A suction nail hole is provided at the lower end of the suction nozzle. The diameter of the needle body is larger than the diameter of the suction nail hole, and the diameter of the needle head is smaller than the diameter of the suction nail hole.

10. A pre-pressing nail suction head structure according to claim 9, characterized in that: A conical cavity is arranged inside the suction nozzle. The upper end of the conical cavity is communicated with the air passage, the lower end of the conical cavity is communicated with the suction nail hole, the needle head is arranged as a conical needle head, and the conical needle head is inserted into the conical cavity.

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