Axial pre-tightening structure of threading rod

Abstract

The utility model relates to the technical field of pole piece threading equipment, and discloses an axial pre-tightening structure of a threading rod, which comprises two groups of chains, the belt penetrating rod is positioned between the two groups of chains and is coaxially arranged with the connecting bushing; the axial plug pin is arranged in the connecting lining in a penetrating mode, the axial plug pin and the belt penetrating rod are coaxially arranged, the axial plug pin is detachably connected with the connecting lining and the belt penetrating rod, and the axial plug pin adjusts the distance between the two chains and the corresponding end of the belt penetrating rod; the chain wheel is connected with the chain in a meshed mode, and when the axial plug pin adjusts the distance between the chain and the belt penetrating rod, the chain and the chain wheel abut against each other and are meshed tightly. The utility model has the following technical effects: the chain is coaxially connected with the threading rod through the axial bolt at the connecting bush, and the chain is propped against the chain wheel to axially pre-tighten the threading rod, so that the problem that the threading rod is bent and drooped under the action of gravity and foil tension is solved, and the smoothness of the foil in the tape leading process is ensured.

Description

Technical Field

[0001] The utility model belongs to the technical field of pole piece belt threading equipment, and in particular relates to an axial pre-tightening structure of a belt threading rod. Background Art

[0002] Battery pole pieces are the key part of batteries for storing and releasing electrical energy. They can be formed by evenly coating the surface of a foil with slurry and then rolling it. At present, pole pieces are usually coated and dried using a coater. The coater evenly coats the slurry on the surface of the foil, and then dries the coated foil to remove impurities such as moisture and solvents in the foil. After the coating is cured, the pole piece precursor is obtained.

[0003] In the related art, the coating machine includes a belt threading structure, which pulls the pole piece material belt, and the pole piece material belt correctly completes the coating and drying process according to a certain path. The belt threading structure mainly includes a belt threading rod for fixing and pulling the pole piece material belt, a chain is provided on one side of the belt threading rod, a connecting ear is provided on the chain, a waist-shaped hole is opened on the connecting ear, the belt threading rod is assembled with the connecting ear at the waist-shaped hole by bolts, and the chain is meshed with a sprocket. During the pole piece transmission process, the foil is attached to the belt threading rod with tape, and the sprocket rotates to drive the chain to realize the transmission of the belt threading rod, and the belt threading rod completes the belt leading operation with the transmission of the chain.

[0004] However, in order to make the wheelbase between the threading rod and the connecting ear adjustable, the length of the waist-shaped hole at the connecting ear is usually longer. At this time, the threading rod is easily bent and drooped by gravity and the tension of the foil during the threading process, which causes wrinkles in the foil during the threading process. Utility Model Content

[0005] In order to solve the deficiencies of the prior art, the utility model provides an axial pre-tightening structure for a belt threading rod. The chain is coaxially connected to the belt threading rod at the connecting bushing through an axial pin. The belt threading rod is axially pre-tightened to solve the problem of bending and sagging of the belt threading rod due to gravity and foil tension, which is beneficial to ensuring the flatness of the foil during the belt leading process.

[0006] The technical effects to be achieved by the utility model are achieved through the following technical aspects:

[0007] In a first aspect, the present utility model provides an axial pre-tightening structure for a tape threading rod, which includes two sets of chains. The chains include connecting bushings; a tape threading rod located between the two sets of chains and coaxially arranged with the connecting bushings; an axial pin inserted through the connecting bushing and coaxially arranged with the tape threading rod. The axial pin is detachably connected to the connecting bushing and the tape threading rod respectively, and the axial pin adjusts the distance between the corresponding ends of the two sets of chains and the tape threading rod; and a sprocket meshed with the chain. When the axial pin adjusts the distance between the chain and the tape threading rod, the chain and the sprocket are in mutual contact and bite tightly.

[0008] In some implementation manners, the axial pin includes an insertion end and a rotation end. The insertion end is inserted through the connecting bushing and is detachably connected to the connecting bushing.

[0009] In some implementation manners, the outer wall of the insertion end is threadedly connected to the inner wall of the connecting bushing.

[0010] In some implementation manners, an adjusting assembly for adjusting the distance between the two sets of chains is provided between the axial pin and the tape threading rod.

[0011] In some implementation manners, the adjusting assembly includes an adjusting sleeve located between the axial pin and the tape threading rod. The axial pin and the tape threading rod are respectively coaxially arranged with the adjusting sleeve; the adjusting sleeve is detachably connected between the axial pin and the adjusting sleeve and between the adjusting sleeve and the tape threading rod.

[0012] In some implementation manners, a first adjusting hole is provided at one end of the adjusting sleeve close to the axial pin. The axial pin is inserted through the first adjusting hole and is threadedly connected to the adjusting sleeve.

[0013] In some implementation manners, a second adjusting hole is provided at one end of the adjusting sleeve close to the tape threading rod. The tape threading rod is inserted through the second adjusting hole and is threadedly connected to the adjusting sleeve.

[0014] In some implementation manners, a loosening prevention member is provided between the tape threading rod and the adjusting sleeve, and the loosening prevention member restricts the rotation of the tape threading rod.

[0015] In some implementation manners, the loosening prevention member includes a loosening prevention nut sleeved on the tape threading rod and threadedly connected to the tape threading rod. The loosening prevention nut is located on one side of the adjusting sleeve in the axial direction.

[0016] In some implementations, the chain includes: inner plates located on both sides of the connecting bushing in the axial direction; and outer plates located on the side of the inner plates away from the connecting bushing. The axial pins respectively pass through the outer plates, the inner plates, and the connecting bushing to connect the outer plates, the inner plates, and the connecting bushing.

[0017] In summary, the present utility model has at least the following advantages:

[0018] The axial pre-tightening structure of the tape threading rod provided by the present utility model has the tape threading rod located between two groups of chains. After the axial pins are inserted into the connecting bushings, the axial pins are respectively detachably connected to the connecting bushings and the tape threading rod to achieve coaxial connection of the connecting bushings and the tape threading rod. By adjusting the distance between the corresponding ends of the two groups of chains and the tape threading rod through the axial pins, when the sprocket is meshed with the chain, the axial pins adjust the distance between the chain and the tape threading rod, and the axial pins keep the chain and the sprocket in a mutually pressing state. The chain and the sprocket are tightly engaged, and the reaction force of the sprocket acts on the tape threading rod, the axial pins, and the connecting bushing. At this time, the tape threading rod obtains an axial pre-tightening force. The axial pre-tightening of the tape threading rod through the axial pins is beneficial to improving the problem that the tape threading rod bends and sags under the influence of gravity and the pulling force of the foil during the tape threading process, resulting in wrinkles in the foil during the tape threading process. When the tape threading rod threads the tape, it can keep the foil under good tension and support force. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a partial structural top view of an axial pre-tightening structure of a tape threading rod according to Embodiment 1 of the present utility model.

[0020] Figure 2 It is a partial structural top view of an axial pre-tightening structure of a tape threading rod according to Embodiment 2 of the present utility model.

[0021] Figure 3 It is a top view of the overall structure of an axial pre-tightening structure of a tape threading rod according to a specific embodiment of the present utility model.

[0022] Figure 4 It is Figure 3 a schematic cross-sectional view taken along the A-A plane of the partial structure at one end of the tape threading rod in the axial direction.

[0023] Figure 5 It is Figure 3 a schematic cross-sectional view taken along the A-A plane of the partial structure at the other end of the tape threading rod in the axial direction.

[0024] Figure 6 It is Figure 3 a schematic cross-sectional view taken along the B-B plane of the overall structure.

[0025] Markings in the figure:

[0026] 1. Chain; 11. Connecting bushing; 12. Inner plate; 13. Outer plate;

[0027] 2. Belt threading rod; 21. Mounting hole;

[0028] 3. Axial pin; 31. Insertion end; 32. Rotating end;

[0029] 4. Sprocket; 41. Rotating shaft

[0030] 5. Adjusting assembly; 51. Adjusting sleeve; 511. First adjusting hole; 512. Second adjusting hole; 52. Locknut. Detailed implementation mode

[0031] To make the purpose, technical solutions and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. The described embodiments are part of the embodiments of the present utility model, rather than all of the embodiments.

[0032] Therefore, the following detailed description of the embodiments of the present utility model provided in the drawings is not intended to limit the scope of the claimed present utility model, but merely represents the selected embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts belong to the scope of protection of the present utility model.

[0033] Embodiment 1:

[0034] Please refer to the attached Figure 1 , an axial pre-tightening structure of a belt threading rod of the present utility model, comprising a chain 1, a belt threading rod 2 is arranged on one side of the chain 1, and an axial pin 3 is arranged between the belt threading rod 2 and the chain 1. The belt threading rod 2 is coaxially connected to the chain 1 through the axial pin 3.

[0035] Among them, two groups of chains 1 are provided, and the two groups of chains 1 are arranged relatively parallel. The chain 1 includes a connecting bushing 11. The connecting bushing 11 is specifically a horizontally arranged cylinder. In a preferred embodiment, the inner wall of the connecting bushing 11 is provided with internal threads.

[0036] A sprocket 4 is arranged on one side of the chain 1. The chain 1 meshes with the teeth of the sprocket 4. A rotating shaft 41 is passed through the sprocket 4. The rotating shaft 41 is drivingly connected to a driving member. Specifically, the driving member is preferably but not limited to a motor. The output end of the driving member is drivingly connected to the rotating shaft 41 to drive the rotating shaft 41 to rotate. Then, the rotating shaft 41 drives the sprocket 4 to rotate. When the sprocket 4 is meshed and connected with the chain 1, it can drive the chain 1 to realize the transmission of the belt threading rod 2. At the same time, when the chain 1 meshes with the sprocket 4, it is a rolling friction to reduce the resistance.

[0037] On one side of the chain 1, there is a tape threading rod 2 which spans between two groups of chains 1. Specifically, the tape threading rod 2 is a horizontally arranged round rod and is coaxially arranged with the connecting bushing 11. An axial pin 3 is arranged between the tape threading rod 2 and the connecting bushing 11. In a preferred embodiment, the axial pin 3 includes an insertion end 31 and a rotating end 32 (refer to Figure 4 ). The insertion end 31 passes through the connecting bushing 11. The outer wall of the insertion end 31 is provided with an external thread adapted to the internal thread. The insertion end 31 is threadedly connected to the connecting bushing 11 to achieve detachable connection. After the insertion end 31 passes through the connecting bushing 11, it is detachably connected to the tape threading rod 2. When the insertion end 31 penetrates into the connecting bushing 11, the rotating end 32 is located on the side of the chain 1 away from the tape threading rod 2, which is convenient for the operator to disassemble and assemble the axial pin 3. Both ends of the tape threading rod 2 are coaxially connected to the connecting bushing 11 at the corresponding chain 1 through the axial pin 3, which is beneficial to improving the stability of the tape threading rod 2 when guiding the tape.

[0038] Before threading the foil, double-sided tape can be used to paste on the tape threading rod 2 for fixation. The axial pin 3 is inserted into the connecting bushing 11. After the insertion end 31 penetrates into the connecting bushing 11, it is respectively connected to the corresponding ends of the connecting bushing 11 and the tape threading rod 2. By adjusting the depth of the insertion end 31 screwed into the connecting bushing 11, the distance between the corresponding ends of the chain 1 and the tape threading rod 2 is adjusted. Further, the axial pin 3 realizes the adjustment of the distance between the two groups of chains 1. The chain 1 closely adheres to the corresponding side end face of the tooth of the sprocket 4, the chain 1 and the sprocket 4 are in mutual contact, and the chain 1 bites the sprocket 4. Under the action of the tightening force, the sprocket 4 acts on the tape threading rod 2 through the reaction force, and the tape threading rod 2 obtains an axial pre-tightening force through the axial pin 3 to improve the stability during automatic tape threading of the pole piece. Through axial pre-tightening, the tape threading rod 2 can reduce the influence of gravity and the pulling force of the foil, and the tape threading rod 2 maintains a good supporting force for the foil, thereby improving the problem of bending and sagging of the tape threading rod 2 and wrinkles of the foil during the tape guiding process. At the same time, when the chain 1 conveys the pole piece in the coater, there may be a situation where the space between the over-roller and the chain 1 and the space between the chain 1 and the chain 1 in the tape guiding path are relatively narrow and compact. The coaxial arrangement of the tape threading rod 2 and the connecting bushing 11 can reduce the possibility of interference between the tape threading rod 2, the over-roller and the chain 1, and ensure the smooth tape guiding of the pole piece.

[0039] Embodiment 2:

[0040] The difference between this embodiment and Embodiment 1 is that in this embodiment, further structural optimization is made to the tape threading rod 2 of the present utility model. Please refer to Figures 2 to 4 .

[0041] In this embodiment, an adjusting assembly 5 is arranged between the connecting bushing 11 and the tape threading rod 2, and the adjusting assembly 5 adjusts the axial distance between the tape threading rod 2 and the connecting bushing 11.

[0042] In a preferred embodiment, the adjusting assembly 5 includes an adjusting sleeve 41, which is specifically a horizontally arranged round rod, and the adjusting sleeve 41 is coaxially arranged with the belt threading rod 2 and the connecting bushing 11. One end of the adjusting sleeve 41 close to the connecting bushing 11 is provided with a first adjusting hole 511. Specifically, the first adjusting hole 511 is horizontally arranged, and its length direction is consistent with the axial direction of the adjusting sleeve 41. The adjusting sleeve 41 is provided with a first adjusting thread on the inner wall of the first adjusting hole 511. The insertion end 31 of the axial pin 3 passes through the connecting bushing 11 and then inserts into the first adjusting hole 511, and is threadedly connected with the inner wall of the first adjusting hole 511.

[0043] One end of the adjusting sleeve 41 close to the belt threading rod 2 is provided with a second adjusting hole 512. Specifically, the second adjusting hole 512 is horizontally arranged, and its length direction is consistent with the axial direction of the adjusting sleeve 41. The adjusting sleeve 41 is provided with a second adjusting thread on the inner wall of the second adjusting hole 512. The end of the belt threading rod 2 close to the second adjusting hole 512 penetrates into the second adjusting hole 512, and the outer wall of the belt threading rod 2 is threadedly connected with the inner wall of the second adjusting hole 512. Inside the adjusting sleeve 41, the axial distance between the belt threading rod 2 and the connecting bushing 11 is adjusted by adjusting the length of the belt threading rod 2 penetrating into the second adjusting hole 512; the axial distance between the adjusting sleeve 41 and the connecting bushing 11 is adjusted by adjusting the length of the axial pin 3 penetrating into the first adjusting hole 511, so as to further adjust the distance between the two groups of chains 1, and then adjust the tightening degree between the chain 1 and the sprocket 4, so that the axial pre-tightening force at the belt threading rod 2 is adjusted, which is beneficial to improving the flexibility of use.

[0044] In a preferred embodiment, a loosening prevention member is provided on one side of the adjusting sleeve 41. Specifically, the loosening prevention member includes a loosening prevention nut 52, which is sleeved on the belt threading rod 2 and is threadedly connected with the outer wall of the belt threading rod 2. The setting of the loosening prevention nut 52 is beneficial to reducing the possibility of connection loosening between the belt threading rod 2 and the adjusting sleeve 41, and further improving the stability of the belt guiding process of the belt threading rod 2.

[0045] Before the pole piece is threaded, by rotating the belt threading rod 2 to adjust the length of the belt threading rod 2 penetrating into the second adjusting hole 512, the position of the belt threading rod 2 in the axial direction is finely adjusted. The axial pin 3 adjusts the length of penetrating into the first adjusting hole 511, and the adjusting sleeve 41 and the belt threading rod 2 are finely adjusted in the axial direction. The structure of the adjusting assembly 5 is simple, which is beneficial to improving the convenience of operation.

[0046] Embodiment 3:

[0047] The difference between this embodiment and the above-mentioned embodiment is that in this embodiment, further structural optimization is carried out on the chain 1 of the present invention. Please refer to Figure 5 and Figure 6 .

[0048] The chain 1 of this embodiment includes a plurality of chain links. Each chain link includes two inner plates 12 arranged oppositely. Outer plates 13 are staggeredly arranged on the outer sides of the inner plates 12. Connecting bushings 11 pass through the inner plates 12 and the outer plates 13 respectively to connect the inner plates 12 and the outer plates 13. The axial pin 3 replaces the axle pin in the traditional chain 1. The connection between the connecting bushing 11 and the threading rod 2 can be achieved through the axial pin 3, which is beneficial to ensuring the compactness of the threading structure in the coater. When the chain 1 and the sprocket 4 are in mutual abutment, the side wall of the inner plate 12 close to the sprocket 4 abuts against the corresponding side section of the tooth of the sprocket 4, so that the chain 1 and the sprocket 4 remain in a biting state.

[0049] In a preferred embodiment, one end of the threading rod 2 in the axial direction is detachably connected to the axial pin 3 through an adjusting assembly 5. The other end is provided with a mounting hole 21. The insertion end 31 of the axial pin 3 passes through the connecting bushing 11 and penetrates into the mounting hole 21. The axial pin 3 is detachably connected to the threading rod 2. In some specific embodiments shown, the insertion end 31 is threadedly connected to the threading rod 2. In other specific embodiments shown, the insertion end 31 can be in interference fit with the mounting hole 21 of the threading rod 2. The detachable connection between the insertion end 31 and the threading rod 2 is achieved through friction. The disassembly and assembly of the axial pin 3 and the threading rod 2 are convenient.

[0050] In the present invention, unless otherwise clearly defined and limited, terms such as "installation", "connection", "connection", "fixation" and other terms should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium. It can be the communication inside two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0051] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the product of this invention is usually placed during use. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present invention. In addition, terms such as "first", "second", "third", etc. are only used for distinguishing descriptions, and cannot be understood as indicating or implying relative importance.

[0052] In addition, the terms "horizontal", "vertical", "overhanging", etc. do not require the components to be absolutely horizontal or overhanging, but may be slightly inclined. For example, "horizontal" only means that its direction is more horizontal relative to "vertical", and does not mean that the structure must be completely horizontal, but may be slightly inclined.

[0053] In the present utility model, unless otherwise clearly specified and defined, the first feature being above or below the second feature may include the first and second features being in direct contact, or may include the first and second features not being in direct contact but in contact through additional features therebetween. Moreover, the first feature being above, over, and on the second feature includes the first feature being directly above and obliquely above the second feature, or merely indicating that the horizontal height of the first feature is higher than that of the second feature. The first feature being below, under, and beneath the second feature includes the first feature being directly below and obliquely below the second feature, or merely indicating that the horizontal height of the first feature is lower than that of the second feature.

[0054] Although the description of the present utility model is made in conjunction with the above specific embodiments, it is obvious that those skilled in the art can make many substitutions, modifications, and variations based on the above content. Therefore, all such substitutions, improvements, and variations are included within the spirit and scope of the appended claims.

Claims

1. A belt-threading rod axial pre-tightening structure, characterized in that: include A chain (1) is provided in two groups, wherein the chain (1) comprises a connecting bushing (11); A belt threading rod (2) is located between the two groups of chains (1) and is coaxially arranged with the connecting bushing (11); an axial latch pin (3) which is inserted into the connecting bushing (11) and is coaxially arranged with the belt threading rod (2); the axial latch pin (3) is detachably connected to the connecting bushing (11) and the belt threading rod (2); and the axial latch pin (3) is used to adjust the distance between the corresponding ends of the two groups of chains (1) and the belt threading rod (2); and The sprocket (4) is meshedly connected with the chain (1), and when the axial latch pin (3) adjusts the distance between the chain (1) and the belt threading rod (2), the chain (1) and the sprocket (4) abut against each other and bite each other.

2. The axial pre-tightening structure of the strap rod according to claim 1, characterized in that: The axial latch pin (3) comprises an insertion end (31) and a rotation end (32); the insertion end (31) is inserted into the connecting sleeve (11) and is detachably connected to the connecting sleeve (11).

3. The axial pre-tightening structure of the strap rod according to claim 2, characterized in that: The outer wall of the insertion end (31) is threadedly connected to the inner wall of the connecting bushing (11).

4. The axial pre-tightening structure of the strap rod according to claim 1, characterized in that: An adjustment component (5) for adjusting the distance between the two groups of chains (1) is provided between the axial plug pin (3) and the belt threading rod (2).

5. The axial pre-tightening structure of the strap rod according to claim 4, characterized in that: The adjustment assembly (5) comprises an adjustment sleeve (51), wherein the adjustment sleeve (51) is located between the axial latch pin (3) and the strap threading rod (2), and the axial latch pin (3) and the strap threading rod (2) are respectively coaxially arranged with the adjustment sleeve (51); The adjustment sleeve (51) and the axial latch pin (3), and the adjustment sleeve (51) and the strap-threading rod (2) are detachably connected.

6. The axial pre-tightening structure of the strap rod according to claim 5, characterized in that: A first adjustment hole (511) is formed at one end of the adjustment sleeve (51) close to the axial plug pin (3); the axial plug pin (3) is inserted into the first adjustment hole (511) and is threadedly connected to the adjustment sleeve (51).

7. The axial pre-tightening structure of the strap rod according to claim 5 or 6, characterized in that: A second adjustment hole (512) is formed at one end of the adjustment sleeve (51) close to the strap-threading rod (2); the strap-threading rod (2) is inserted into the second adjustment hole (512) and is threadedly connected to the adjustment sleeve (51).

8. The axial pre-tightening structure of the strap rod according to claim 7, characterized in that: An anti-loosening member is provided between the strap-threading rod (2) and the adjusting sleeve (51), and the anti-loosening member limits the rotation of the strap-threading rod (2).

9. The axial pre-tightening structure of the strap rod according to claim 8, characterized in that: The anti-loosening component comprises an anti-loosening nut (52), the anti-loosening nut (52) is sleeved on the strap-threading rod (2) and threadedly connected to the strap-threading rod (2), and the anti-loosening nut (52) is located on one side of the adjustment sleeve (51) along the axial direction.

10. The axial pre-tightening structure of the strap rod according to claim 1, characterized in that: The chain (1) comprises: Inner plates (12) are located on both sides of the connecting bushing (11) along the axial direction; and The outer plate (13) is located on a side of the inner plate (12) away from the connecting bushing (11), and the axial pin (3) passes through the outer plate (13), the inner plate (12) and the connecting bushing (11) respectively to connect the outer plate (13), the inner plate (12) and the connecting bushing (11).

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