CN208127352U - A kind of retention device - Google Patents

Abstract

The utility model discloses a blocking device. The blocking device is used to separate the coiling needle from the coil material wound on the coiling needle, and includes a blocking part, which can be fixed in the axial direction of the coiling material, so as to move along the coiling needle The coil material is blocked when the coil material moves axially, so that the coil material is separated from the winding needle. In the blocking device of the present invention, the blocking part can block the coil material when the coil needle moves along the axial direction of the coil material, thereby ensuring that when the coil needle is detached from the coil material, it will not The core part of the coil material is pulled out under the action of friction, thereby improving the quality and product qualification rate of the coil material.

Description

a blocking device

technical field

The utility model relates to the technical field of battery production, in particular to a blocking device.

Background technique

With the development of science and technology, the application demand of batteries is increasing. Among them, the winding lithium battery is an important battery variety, and the market demand is also increasing. In order to meet the large demand of the market, it is necessary to realize the automatic production of wound lithium batteries. However, in the automatic production of the prior art, it is impossible to guarantee that when the winding needle is separated from the winding core, the core of the winding core will not be pulled out under the action of friction, especially when the diaphragm has static electricity during the winding process, so that the winding is seriously reduced. Type lithium battery quality and product pass rate.

Utility model content

In view of this, the purpose of this utility model is to provide a blocking device that ensures the quality of the winding core and the qualified rate of the product when the winding needle is separated from the winding core.

In order to achieve the above object, the utility model adopts the following technical solutions:

A blocking device for separating a coil needle from a coil material wound on the coil needle, comprising a barrier part which can be fixed in the axial direction of the coil material so as to When the needle moves along the axial direction of the coil, it blocks the coil, thereby separating the coil from the needle.

Preferably, the blocking portion includes a blocking surface, and when the needle moves along the axial direction of the winding material, the end surface of the rolling material abuts against the blocking surface.

Preferably, the blocking portion includes an arc structure, and the arc structure includes opposite first and second side walls in the axial direction of the coil, and the first side wall forms the blocking surface .

Preferably, the blocking portion includes two arc-shaped structures, and the blocking portion includes an open state in which at least one end of the two arc-shaped structures is far away from each other and a closed state in which at least one end of the two arc-shaped structures is close to each other , in the folded state, the end surface of the roll material can abut against the blocking surface.

Preferably, the arc-shaped structure is switched from the folded state to the open state under the action of gravity or a biasing member.

Preferably, the arc-shaped structure further includes a limiting part, and the limiting part is used to limit the arc-shaped structure in the open state.

Preferably, the limiting portion includes a limiting surface, and the circumferentially opposite end surfaces of the two arc-shaped structures form the limiting surface.

Preferably, the blocking device further includes a mounting part, and the blocking part is rotatably mounted through the mounting part.

Preferably, the mounting portion includes a mounting hole or a mounting groove provided on the arc-shaped structure, and the mounting hole or the mounting groove penetrates through the first side wall and the second side wall.

Preferably, the blocking device further includes a force application part connected to the arc structure, and the force application part can drive the arc structure to switch from the open state to the retracted state under the action of the winding needle so that the web is against the blocking surface.

Preferably, the force applying portion is elongated, and one end of the elongated force applying portion is connected to one end of the arc-shaped structure.

Preferably, the arc structure includes an accommodating portion for accommodating the force applying portion connected to another arc structure.

In the blocking device of the present utility model, the blocking part can block the coil material when the coil needle moves along the axial direction of the coil material, thereby ensuring that when the coil needle is detached from the coil material, it will not The core part of the coil material is drawn out under the action of friction, thereby improving the quality and product qualification rate of the coil material.

Description of drawings

Through the following description of the embodiments of the present invention with reference to the accompanying drawings, the above and other objects, features and advantages of the present invention will be more clear.

Fig. 1 is a structural schematic diagram of the blocking device in the specific embodiment of the present invention when the arc structure is in an open state;

Fig. 2 is a structural schematic view of the blocking device in the specific embodiment of the present invention when the arc-shaped structure is in a retracted state to block the coil material.

In the picture:

1. Blocking part; 11. Blocking surface; 12. Arc structure; 121. First side wall; 122. Second side wall; 123. Limiting part; 1231. Limiting surface; 124. Accommodating part; 125. The third side wall; 126, the fourth side wall;

2. Mounting part; 21. Mounting hole; 22. Pin shaft;

3. Force application part; 31. Force application part;

4. Rolling needle;

5. Roll material.

Detailed ways

The utility model is described below based on the embodiments. Those skilled in the art should understand that the drawings provided here are for the purpose of illustration, and the drawings are not necessarily drawn to scale.

Unless the context clearly requires, throughout the specification and claims, "comprises", "comprises" and similar words should be interpreted in an inclusive sense rather than an exclusive or exhaustive meaning; that is, "including but not limited to" meaning.

Referring to Fig. 1 and shown in Fig. 2, the utility model provides a kind of blocking device, is used for the separation of coiling needle 4 and coil material 5 wound on coiling needle 4, and coil material 5 can be the electric core of lithium battery for example, The blocking device is installed on the winding machine to realize automatic production.

As shown in Figures 1 and 2, the blocking device includes a blocking part 1, and the blocking part 1 can be fixed in the axial direction of the coil material 5, so as to block the coil material 5 when the needle 4 moves along the axial direction of the coil material 5 , thereby separating the coil material 5 from the coil needle 4, ensuring that when the coil needle 4 is separated from the coil material 5, the core of the coil material 5 will not be pulled out under the action of friction, thereby improving the quality and product qualification of the coil material 5 Rate.

The blocking portion 1 includes an arc structure 12. As shown in FIGS. On the opposite third side wall 125 and fourth side wall 126 in the direction consistent with the radial direction of the coil material 5, the third side wall 125 and the fourth side wall 126 are preferably a part of the cylindrical surface, that is, the arc structure 12 forms It is in the shape of a fan ring plate or a fan ring strip structure, and the first side wall 121 forms a blocking surface 11. When the coil needle 4 moves along the axial direction of the coil material 5, the end surface of the coil material 5 abuts against the blocking surface 11, blocking The surface 11 only blocks the end face of the coil material 5, and the barrier surface 11 is preferably a fan-shaped plane. At this time, the outer diameter of the barrier surface 11 is preferably greater than or equal to the outer diameter of the coil material 5, and the inner diameter of the barrier surface 11 is preferably equal to or slightly smaller than The inner diameter of coil 5. In a specific embodiment, the inner diameter of the blocking surface 11 is slightly smaller than the inner diameter of the coil material 5 , and the winding needle 4 is elastic, so there is no interference problem between the blocking surface 11 and the winding needle 4 .

The blocking device also includes a mounting part 2. As shown in FIG. 2, the blocking part 1 is installed through the rotation of the mounting part 2. The mounting part 2 preferably includes a mounting hole 21 or a mounting groove, and the axis of the mounting hole 21 or the extending direction of the mounting groove and the rolling material The axes of 5 are consistent, and the installation hole 21 or the installation groove is arranged on the arc-shaped structure 12. The installation hole 21 or the installation groove runs through the first side wall 121 and the second side wall 122, and the pin shaft inserted into the installation hole 21 or the installation groove 22 makes the blocking part 1 rotated and installed on the winding machine, which is convenient for disassembly and maintenance.

The blocking part 1 includes two arc-shaped structures 12, and the blocking part 1 includes an open state in which at least one end of the two arc-shaped structures 12 is away from each other and a closed state in which at least one end of the two arc-shaped structures 12 is close to each other, as shown in Figures 1 and 2 , in the folded state, the end surface of the coiled material 5 can abut against the blocking surface 11, and the third side walls 125 of the two arc-shaped structures 12 are oppositely arranged. At this time, the third side walls 125 of the arc-shaped structures 12 are along 5 wraps the coil needle 4 in the circumferential direction. In the open state, the end face of the coil 5 does not abut against the blocking surface 11. The fourth side wall 126 of the arc structure 12 is preferably oppositely arranged. The arc structure 12 passes through the mounting hole 21 The rotation of the pin shaft 22 provided in the center realizes switching between the folded state and the open state, wherein the arc structure 12 is switched from the folded state to the open state under the action of gravity or a biasing member, which not only reduces energy consumption, but also ensures Resetting of the arc structure 12 . The arc structure 12 also includes a limiting portion 123, and the limiting portion 123 includes a limiting surface 1231. Preferably, the opposite end surfaces of the two arc structures 12 in the circumferential direction form a limiting surface 1231, and the limiting surface 1231 is preferably set to be in line with The radial intersecting planes of the arc-shaped structures 12, in the open state, the limiting surfaces 1231 on the two arc-shaped structures 12 abut against each other, so that the limiting surface 1231 of one of the arc-shaped structures 12 can hold the other arc-shaped structure 12 is in the open state, and the limit surfaces 1231 of the two arc-shaped structures 12 respectively limit the other arc-shaped structure 12 to ensure that the arc-shaped structures 12 are in the open state.

The blocking device also includes a force application part 3 connected to the arc structure 12. The force application part 3 includes a force application part 31. As shown in FIGS. 1 and 2, the force application part 31 is elongated. One end is connected to one end of the arc structure 12 , and the force application part 3 can drive the arc structure 12 to rotate from the open state to the retracted state under the action of the needle 4 so that the coil material 5 is against the blocking surface 11 . In the open state, the force application member 31 is arranged crosswise, and the coil needle 4 moves downward along the radial direction of the coil material 5, and the outer wall of the coil needle 4 acts on the force application member 31, and then along with the downward movement of the coil needle 4, the two The angle between the two force applying parts 31 becomes larger, and as the angle between the force applying parts 31 becomes larger, the blocking part 1 rotates around the pin shaft 22, and then the two arc structures 12 are gradually closed to wrap the winding needle 4 Covering, preferably, the force application part 3 and the blocking part 1 are integrally formed or welded together, and the arc structure 12 also includes a receiving part 124, and the receiving part 124 on one arc structure 12 is used for receiving and connecting with the other The arc-shaped structure 12 is connected to the force application member 31, so that when the angle between the force application members 31 becomes larger, the force application member 31 will not affect the blocking part 1 to wrap the winding needle 4 smoothly, thereby ensuring that the winding needle 4 is separated from the winding needle 4. After material 5, the mass of coil material 5. Preferably, the force application portion 3 and the accommodating portion 124 located on the same arc structure 12 are arranged along the axial direction of the installation hole 21 or the extension direction of the installation groove, and the force application portion 3 and the accommodation portion 124 provided on the two arc structures 12 The arrangement of the accommodating portion 124 is just the opposite, so that the force applying portion 3 can be smoothly accommodated in the accommodating portion 124 when the arc-shaped structure 12 is in the retracted state.

The working process of the blocking device of the present utility model: the winding of the coil material 5 is completed, and the two arc structures 12 are in an open state under the action of gravity. The wall is stuck against the free ends of the two force applying members 31, and as the coil needle 4 continues to move downward along the radial direction of the coil material 5, the force applying member 31 drives the arc structure 12 to wind together under the action of the coil needle 4. The pin shaft 22 rotates, and then the arc-shaped concave portion of the arc-shaped structure 12 wraps the needle 4 along the circumferential direction of the coil material 5. At this time, the arc-shaped structure 12 is in a retracted state. When moving in the direction, the end face of the coil material 5 is against the first side wall 121 of the arc structure 12, preventing the coil material 5 from moving with the movement of the coil needle 4, and then the coil needle 4 is separated from the coil material 5, and the coil The needle 4 continues to move along the axial direction of the coil material 5 until the outer wall of the coil needle 4 is not stuck against the force application part 3, and the arc-shaped structure 12 reversely rotates around the pin shaft 22 under the action of its own gravity, so that the arc-shaped structure 12 is in open state, completes the detachment of coil needle 4 and coil material 5 once.

The blocking device of the utility model has a simple structure, meets the requirements of automatic production, is convenient for disassembly and maintenance, and helps to improve the quality and qualified rate of the coil material 5 .

Those skilled in the art can easily understand that, on the premise of no conflict, the above-mentioned preferred solutions can be freely combined and superimposed.

The above descriptions are only preferred embodiments of the present utility model, and are not intended to limit the present utility model. For those skilled in the art, the present utility model may have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model shall be included in the protection scope of the present utility model.

Claims (12)

1. A blocking device, used for the separation of the coil needle and the coil material wound on the coil needle, characterized in that it includes a barrier part, and the barrier part can be fixed in the axial direction of the coil material , so as to block the coil material when the coil needle moves along the axial direction of the coil material, so as to separate the coil material and the coil needle. 2. The blocking device according to claim 1, wherein the blocking portion comprises a blocking surface, and when the winding needle moves along the axial direction of the winding material, the end surface of the rolling material abuts against the rolling material. on the blocking surface. 3. The blocking device according to claim 2, wherein the blocking portion comprises an arc-shaped structure comprising opposite first and second side walls in the axial direction of the web wall, the first side wall forms the barrier surface. 4. The blocking device according to claim 3, wherein the blocking portion comprises two arc structures, and the blocking portion comprises an open state in which at least one end of the two arc structures is far away from each other and two arc structures. At least one end of the arc-shaped structure is in a folded state where at least one end is close to each other, and in the folded state, the end surface of the roll material can abut against the blocking surface. 5. The blocking device according to claim 4, wherein the arc-shaped structure is switched from the folded state to the open state under the action of gravity or a biasing member. 6 . The blocking device according to claim 4 , wherein the arc-shaped structure further comprises a limiting portion, and the limiting portion is used to limit the arc-shaped structure in the open state. 7 . 7 . The blocking device according to claim 6 , wherein the limiting portion comprises a limiting surface, and the circumferentially opposite end surfaces of the two arc-shaped structures form the limiting surface. 8. The blocking device according to claim 3, characterized in that, the blocking device further comprises a mounting part, and the blocking part is rotatably mounted by the mounting part. 9. The blocking device according to claim 8, wherein the installation part includes an installation hole or an installation groove provided on the arc-shaped structure, and the installation hole or the installation groove passes through the first side wall and the second side wall. 10. The blocking device according to claim 4, characterized in that, the blocking device further comprises a force application part connected with the arc structure, and the force application part can drive the The arc-shaped structure is switched from the open state to the retracted state so that the roll material abuts against the blocking surface. 11 . The blocking device according to claim 10 , wherein the force applying portion is elongated, and one end of the elongated force applying portion is connected to one end of the arc-shaped structure. 12. The blocking device according to claim 11, characterized in that, the arc-shaped structure includes a housing portion for accommodating the force-applying portion connected to another arc-shaped structure .