Mould pressing mechanism

Abstract

The utility model relates to the field of preparation and detection of power batteries, in particular to a mould pressing mechanism, which comprises a pushing and pressing part for rubbing two ends of a roll core, a positioning structure for restraining the roll core to be transversely arranged and a charge coupled device (CCD) detection part, and the positioning structure is positioned between two pushing and pressing rods in the pushing and pressing part. The positioning structure is used for supporting the lower part of the roll core to vacate the space of the upper part of the roll core, so that the CCD detection part positioned above the roll core projects the detection range to the tabs at the two ends of the roll core; according to the utility model, the functions of rubbing and measuring the tab are integrated, and compared with a tab flattening mechanism which can only be used for rubbing in the prior art, the tab flattening device can measure the length of the leaked foil and detect the length of the leaked foil on the roll core, and can be matched with an upper computer to screen unqualified roll cores, so that the production efficiency is improved, and the production cost is reduced. Therefore, unqualified roll cores are prevented from flowing to the market.

Description

Technical Field

[0001] The utility model relates to the field of preparation and detection of power batteries, and particularly to a molding mechanism. Background Art

[0002] Flattening the tab of a round battery and compacting the tab of the winding core to increase its density is a process of placing the tab under pressure and flattening it.

[0003] For example, in the patent No. 202222172404.1 named "Tab Flattening Machine and Its Tab Flattening Mechanism", the tab of a battery is a metal conductor that leads out the positive and negative electrodes from the winding core. Since the tab follows the winding during the winding process of the winding core, there are more or less uneven problems with the tab in the winding core; in order to ensure that the tab in the winding core is in close contact with the external electrode plate during welding, it is necessary to flatten the tab in the winding core.

[0004] After the above flattening treatment, the total length of the winding core is directly measured to determine whether the size of the winding core is a qualified product.

[0005] However, through research, it is found that simply judging whether it is a qualified product by measuring the length of the winding core is insufficient. This is because after the tab is flattened, there will still be an inevitable phenomenon of foil leakage. This foil leakage is the gap generated between the foil sheets. Therefore, it is necessary to additionally measure the foil length. Only when the length values of both are within the qualified standard range can it be determined as a qualified product; in the above tab flattening mechanism, there is a lack of a mechanism that can measure the foil length. Summary of the Utility Model

[0006] To solve the above problems, the utility model provides a molding mechanism, which includes the function of detecting the foil length and can also maintain the original function of compacting the tab.

[0007] To achieve the above purpose, the technical solution adopted by the utility model is: a molding mechanism, which includes a pushing part for flattening both ends of the winding core. It is characterized in that it further includes a positioning structure for restricting the horizontal arrangement of the winding core and a CCD detection part. The positioning structure is located between two pushing rods in the pushing part. The positioning structure supports the lower part of the winding core to create space for the upper part of the winding core, so that the CCD detection part located above the winding core can project the detection range onto the tabs at both ends of the winding core.

[0008] Furthermore, the pushing part includes a driving mechanism for driving the pushing rods to move towards each other.

[0009] Furthermore, a positioning sleeve is sleeved on the outer end of the pushing rod. When the two pushing rods move towards each other, the winding core passes through the positioning sleeve.

[0010] Furthermore, a photoelectric switch with a detection range located between two push rods is also provided.

[0011] Furthermore, the CCD detection part includes a CCD camera and a light source arranged on the support frame. There are at least two CCD cameras and light sources, and the light source is inclined towards the tab.

[0012] Furthermore, the positioning structure has an arc surface adapted to the circumferential shape of the core, and the arc surface of the positioning structure only supports the middle part of the core.

[0013] Furthermore, after the positioning sleeve is sleeved on the push rod, the outer end of the push rod is close to passing through the positioning sleeve inside the positioning sleeve.

[0014] Advantages of the present utility model:

[0015] The functions of the present utility model incorporate flattening and measuring of the tabs. For the tab flattening mechanism in the prior art that can only flatten the tabs, the present utility model can measure the length of the exposed foil, detect the length of the exposed foil on the core, and cooperate with the host computer to screen out unqualified cores, thereby preventing unqualified cores from flowing into the market. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a perspective view of the present utility model.

[0017] Figure 2 is Figure 1 an enlarged schematic view of part A of

[0018] Figure 3 is a usage state diagram of the pushing part flattening the core.

[0019] Figure 4 is Figure 3 an enlarged schematic view of part B of

[0020] Figure 5 is a perspective view of the positioning structure.

[0021] Figure 6 is a structural diagram of the core located inside the positioning sleeve.

[0022] Figure 7 is a structural diagram of the outer end of the push rod inside the positioning sleeve. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0023] Please refer to Figure 1-7 shown, Figure 1 is a perspective view of the molding mechanism.

[0024] The molding mechanism combines the functions of flattening and detecting the core 4. The molding mechanism includes two parts, namely a CCD detection part and a pressing part for flattening both ends of the core 4.

[0025] The pressing part is located on the machine table 1. The pressing part includes a pair of pressing rods 2 arranged oppositely and a driving mechanism 3 for driving the pressing rods 2 to move towards each other. Under the action of the driving mechanism 3, the pressing rods 2 move towards each other. The above-mentioned movement towards each other is to contact the tabs 41 at both ends of the core 4 and flatten the tabs 41.

[0026] The CCD detection part is located above the core 4. The detection range of the CCD detection part covers the tabs 41 at both ends of the core 4. After flattening the tabs 41, the pressing of the tabs 41 by the pressing rods 2 is released, and the operation of the CCD detection part is executed to detect the tabs 41 at both ends of the core 4, and cooperate with the upper computer to measure the length of the foil leakage of the current tabs 41.

[0027] It can be seen that after the core 4 is flattened by the present utility model, the length of the foil leakage of the tabs 41 can be measured, and the upper computer can be used to screen out unqualified cores 4, so as to prevent unqualified cores 4 from flowing into the market.

[0028] In some embodiments, a positioning sleeve 5 is sleeved on the outer end 21 of the pressing rod 2. When the two pressing rods 2 move towards each other, the core 4 is inserted into the positioning sleeve 5. The positioning sleeve 5 plays a role in restraining the core 4 to prevent the core 4 from being laterally deflected due to uneven pressure on both ends.

[0029] On the machine table 1, a photoelectric switch 6 is further provided. The detection range of the photoelectric switch 6 covers the area between the two pressing rods 2 and is used to confirm whether there is a core 4 between the two pressing rods 2.

[0030] The driving mechanism 3 is composed of an existing cylinder and a sliding component. The cylinder presses the tabs 41 at both ends of the core 4 by pushing the pressing rods 2.

[0031] The CCD detection part includes a CCD camera 7 and a light source 8 arranged on a support frame. Among them, there are at least two CCD cameras 7 and light sources 8, and the light source 8 is inclined towards the tabs 41.

[0032] It should be noted that between the two pressing rods 2 on the machine table 1, a positioning structure 9 for supporting the core 4 is further provided. The positioning structure 9 has an arc surface adapted to the circumferential surface shape of the core 4. Moreover, the arc surface of the positioning structure 9 only supports the middle part of the core 4. Therefore, both ends of the core 4 are suspended. When flattening, the positioning sleeve 5 will be sleeved on both ends of the core 4.

[0033] It should also be noted that the outer end of the push rod 2 is close to passing through the positioning sleeve 5 inside the positioning sleeve 5. Therefore, when the outer end 21 of the push rod 2 in the positioning sleeve 5 presses the tab 41, the two positioning sleeves 5 will not contact each other, and the positioning sleeve 5 will not contact the positioning structure 9 and will not affect the positioning structure 9.

[0034] The above embodiments are only descriptions of the preferred embodiments of the present invention and do not limit the scope of the present invention. Without departing from the design spirit of the present invention, various deformations and improvements made by those of ordinary skill in the art to the technical solutions of the present invention shall fall within the protection scope determined by the claims of the present invention.

Claims

1. A molding mechanism, comprising a pushing portion for flattening both ends of a winding core, characterized in that: It also includes a positioning structure for constraining the lateral arrangement of the winding core and a CCD detection part. The positioning structure is located between the two pushing rods in the pushing part. The positioning structure supports the lower part of the winding core and frees up space in the upper part of the winding core for the CCD detection part located above the winding core to project the detection range onto the pole ears at both ends of the winding core.

2. A molding mechanism according to claim 1, characterized in that: The pushing part includes a driving mechanism for driving the pushing rods to move toward each other.

3. A molding mechanism according to claim 1, characterized in that: A positioning sleeve is sleeved on the outer end of the push rod, and when the two push rods move toward each other, the winding core is inserted into the positioning sleeve.

4. A molding mechanism according to claim 1, characterized in that: A photoelectric switch is also provided, the detection range of which is located between the two push rods.

5. A molding mechanism according to claim 1, characterized in that: The CCD detection part includes a CCD camera and a light source arranged on a support frame. There are at least two CCD cameras and light sources, and the light source is inclined toward the pole ear.

6. A molding mechanism according to claim 1, characterized in that: The positioning structure has an arcuate surface adapted to the peripheral shape of the winding core, and the arcuate surface of the positioning structure only supports the middle part of the winding core.

7. A molding mechanism according to claim 3, characterized in that: After the positioning sleeve is sleeved on the pushing rod, the position of the outer end of the pushing rod inside the positioning sleeve is close to passing through the positioning sleeve.

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