CN220339871U - Unreeling force test fixture - Google Patents

Abstract

The utility model relates to the technical field of unwinding force testing of lithium battery adhesive tapes, in particular to an unwinding force testing clamp. The technical scheme adopted by the utility model is as follows: including last anchor clamps major structure and lower anchor clamps major structure, go up anchor clamps major structure and constitute by last anchor clamps base, tension sensor and anchor clamps grip block, tension sensor is located go up the upper end of anchor clamps base, tension sensor's upper end is equipped with fastening connection combination hole, it is equipped with can control to go up one side of anchor clamps base the last anchor clamps elasticity handle of the tight position distance size of anchor clamps grip block, lower anchor clamps major structure comprises lower anchor clamps support, lower anchor clamps pulley, slide bearing and fastening bolt. The utility model has the advantages that: the tension sensor is arranged to accurately collect the tension in the detection process, so that the accuracy of release force in the detection process is guaranteed, and the device is simple in overall structure and more convenient to use.

Description

Unreeling force test fixture

Technical Field

The utility model relates to the technical field of unwinding force testing of lithium battery adhesive tapes, in particular to an unwinding force testing clamp.

Background

The lithium battery tape is often used for fixing the electrode lugs, coating the battery core and protecting the shell, and the back surface of the lithium battery tape is required to be subjected to non-silicon treatment due to the requirement of a production process, so that the back surface of the tape has lighter unwinding force. In the actual production process, the performance index of the unwinding force can well reflect the use efficiency of the lithium electricity adhesive tape on the automatic equipment. If the unreeling force is too large, the lithium battery adhesive tape cannot be pulled out, so that the lithium battery adhesive tape slides off from the clamp, and the production efficiency is affected; the unwinding force is too small, and the lithium battery adhesive tape can be too long in material pulling, so that the lithium battery adhesive tape is wound back. In the prior art, the evaluation standard of the unreeling performance index of the lithium battery tape is generally defined by adopting a back release force test range, and in the actual test process, the definition range is correspondingly set very wide due to the fact that the release force test result is larger in an up-down floating range, so that an unreeling force test fixture is required to be designed, and the corresponding value of the unreeling force can be accurately measured.

Disclosure of Invention

The utility model aims to provide an unwinding force test fixture which adopts a brand-new structural design, is matched with the upper seat and the lower seat of the existing tension machine for combined use during use, is clamped and matched with the end head of a lithium battery adhesive tape through an upper fixture main body structure, can accurately collect the tension force in the detection process through the arrangement of a tension sensor, ensures the accuracy of release force in the detection process, has a simple integral structure, is more convenient during use, and can ensure better safety of the lithium battery adhesive tape after use through accurate detection.

The technical scheme of the utility model is as follows:

an unwinding force test fixture, its characterized in that: including last anchor clamps major structure and lower anchor clamps major structure, it comprises last anchor clamps base, tension sensor and anchor clamps grip block to go up anchor clamps major structure, tension sensor is located go up the upper end of anchor clamps base, tension sensor's upper end is equipped with fastening connection combination hole, it is equipped with can control to go up one side of anchor clamps base the last anchor clamps elasticity handle of the tight position distance size of anchor clamps grip block, lower anchor clamps major structure comprises lower anchor clamps support, lower anchor clamps pulley, slide bearing and fastening bolt, the both ends of the inside center pin of lower anchor clamps pulley are equipped with one respectively slide bearing, slide bearing's inside is passed through fastening bolt with lower anchor clamps support fixed connection is in the same place, the lower extreme of lower anchor clamps support is equipped with installation fastening combination hole.

Further, a clamping anti-slip structure is arranged on the clamping end face of the clamping position of the clamp clamping block.

Further, the clamping anti-slip structure is a wavy anti-slip pattern.

Further, the size of the upper end position of the upper clamp base is smaller than that of the lower end position.

Further, one side of the lower clamp pulley, which is close to the connecting position of the lower clamp bracket, is provided with a stop protection column, and the outer cylindrical surface of the lower clamp pulley is provided with a matched anti-skid stable structure.

Further, the dimension of the lower clamp pulley at a side close to the lower clamp bracket is larger than the dimension of a side far away from the connecting position of the lower clamp bracket.

The utility model has the beneficial effects that:

the utility model adopts a brand new structural design, and is matched with the upper seat and the lower seat of the existing tension machine for combined use when in use, the upper clamp main body structure is in clamping fit with the end head of the lithium battery adhesive tape, the tension force in the detection process can be accurately collected through the arrangement of the tension sensor, the accuracy of release force in the detection process is ensured, the whole structure is simple, the use is more convenient, and the safety of the lithium battery adhesive tape after the use can be ensured through accurate detection.

Drawings

FIG. 1 is a schematic structural view of the main body structure of the upper clamp in the present utility model;

FIG. 2 is a schematic view of the structure of the main body of the lower fixture in the present utility model;

FIG. 3 is a schematic perspective view of the main structure of the lower fixture of the present utility model;

in the figure: 1. the device comprises a tension sensor, an upper clamp base, a clamp clamping block, a lower clamp pulley, a sliding bearing, a fastening bolt, a lower clamp bracket and a sliding bearing, wherein the tension sensor, the upper clamp base, the clamp clamping block, the lower clamp pulley, the sliding bearing, the fastening bolt and the lower clamp bracket are arranged in sequence.

Detailed Description

As shown in fig. 1 to 3, an unwinding force test fixture comprises an upper fixture main body structure and a lower fixture main body structure, wherein the upper fixture main body structure comprises an upper fixture base 2, a tension sensor 1 and a fixture clamping block 3, the tension sensor 1 is positioned at the upper end of the upper fixture base 2, and a fastening connection combined hole is formed at the upper end of the tension sensor 1 and can be fastened and connected with an upper seat of an existing tension machine. An upper clamp tightness handle 8 capable of controlling the distance between the clamping positions of the clamp clamping blocks 3 is arranged on one side of the upper clamp base 2, and the clamping positions of the clamp clamping blocks 3 are fastened and loosened through the upper clamp tightness handle. The lower clamp main body structure comprises a lower clamp bracket 7, a lower clamp pulley 4, a sliding bearing 5 and a fastening bolt 6, wherein two ends of an inner central shaft of the lower clamp pulley 4 are respectively provided with the sliding bearing 5, the inner part of the sliding bearing 5 is fixedly connected with the lower clamp bracket 7 through the fastening bolt 6, and the cost during connection combination is lower. The lower end of the lower clamp bracket 7 is provided with a mounting and fastening combination hole, and the mounting and fastening combination hole is fastened and connected with the lower seat of the existing tension machine. The novel structural design is adopted, the upper seat and the lower seat of the existing tension machine are matched for combined use when the novel tension machine is used, the main structure of the upper clamp is matched with the end head of the lithium battery adhesive tape in a clamping mode, tension in the detection process can be accurately collected through the arrangement of the tension sensor, accuracy of release force in the detection process is guaranteed, the novel tension machine is simple in integral structure, more convenient in use, and better safety of the lithium battery adhesive tape after use can be guaranteed through accurate detection.

When the adhesive tape roll is used, the adhesive tape roll is installed on the lower clamp pulley 4, wherein the inner diameter of the adhesive tape roll is equivalent to the outer diameter of the lower clamp pulley 4, the end of the adhesive tape roll is pulled, and the lower clamp pulley 4 is driven to rotate along with the adhesive tape roll through the rotation of the sliding bearing 5. The lower clamp base is connected with the lower seat of the universal tensile machine, then the end of the adhesive tape roll is placed in the middle of the upper clamp clamping block 3 after the adhesive tape roll is manually stretched for a certain distance, the upper clamp clamping block 3 is clamped by rotating the upper clamp elastic handle 8, the upper clamp base 2 is connected with the tension sensor 1, the tension sensor 1 is connected with the upper seat of the universal tensile machine, the upper seat of the universal tensile machine is slowly lifted upwards at a constant speed by setting a certain speed, the upper clamp base 2 and the end of the adhesive tape roll are driven to lift upwards together, so that the adhesive tape roll is driven to do an uncoiling action, the force required by pulling the adhesive tape can be simply and clearly sensed through the tension sensor 1, and then the force is collected in computer software through an electric signal.

Preferably, the clamping end face of the clamping position of the clamp clamping block 3 is provided with a clamping anti-slip structure, so that the tightness of the clamping position when the adhesive tape is clamped is better, and the accuracy of the detection is also more ensured.

Preferably, the clamping anti-slip structure is a wavy anti-slip pattern, so that the structure is more convenient to produce and process, the clamping fit area between the clamping anti-slip structure and the adhesive tape is larger when the clamping anti-slip structure is used, and the clamping force is more stable.

Preferably, the size of the upper end position of the upper clamp base 2 is smaller than that of the lower end position, so that the space of the upper end position is larger, and the installation is more convenient.

Preferably, one side of the lower clamp pulley 4, which is close to the connecting position of the lower clamp bracket 7, is provided with a stop protection post, the outer cylindrical surface of the lower clamp pulley 4 is provided with a matched anti-slip stable structure, the outer cylindrical surface and the inner hole of the adhesive tape are sleeved together, and the matched stability is better through the arrangement of the anti-slip structure, so that the rotary matched stability is more reliable in the detection process.

Preferably, the dimension of the side of the lower clamp pulley 4 close to the lower clamp bracket 7 is larger than the dimension of the side far away from the connecting position of the lower clamp bracket 7, so that the tape roll placement is more convenient.

While the foregoing is directed to the preferred embodiments of the present utility model, it should be noted that modifications and substitutions can be made by those skilled in the art without departing from the principles of the present utility model, and such modifications and substitutions should also be considered to be within the scope of the present utility model.

Claims (6)

1. An unwinding force test fixture, its characterized in that: including last anchor clamps major structure and lower anchor clamps major structure, go up anchor clamps major structure and constitute by last anchor clamps base (2), tension sensor (1) and anchor clamps grip block (3), tension sensor (1) are located go up the upper end of anchor clamps base (2), the upper end of tension sensor (1) is equipped with fastening connection combination hole, one side of going up anchor clamps base (2) is equipped with can control last anchor clamps elasticity handle (8) of anchor clamps grip block (3) clamping position distance size, lower anchor clamps major structure comprises lower anchor clamps support (7), lower anchor clamps pulley (4), slide bearing (5) and fastening bolt (6), the both ends of the inside center pin of lower anchor clamps pulley (4) are equipped with one respectively slide bearing (5), the inside of slide bearing (5) is passed through fastening bolt (6) with lower anchor clamps support (7) fixed connection together, the lower end of lower anchor clamps support (7) is equipped with installs fastening combination hole.

2. An unwind force testing fixture as claimed in claim 1, wherein: the clamping end face of the clamping position of the clamp clamping block (3) is provided with a clamping anti-slip structure.

3. An unwind force testing fixture as claimed in claim 2, wherein: the clamping anti-skid structure is a wave-shaped anti-skid pattern.

4. An unwind force testing fixture as claimed in claim 1, wherein: the size of the upper end position of the upper clamp base (2) is smaller than that of the lower end position.

5. An unwind force testing fixture as claimed in claim 1, wherein: one side of the lower clamp pulley (4) which is close to the connecting position of the lower clamp bracket (7) is provided with a stop protection column, and the outer cylindrical surface of the lower clamp pulley (4) is provided with a matched anti-skid stable structure.

6. An unwind force testing fixture as claimed in claim 1, wherein: the dimension of one side of the lower clamp pulley (4) close to the lower clamp bracket (7) is larger than the dimension of one side far away from the connecting position of the lower clamp bracket (7).