A bolt sequential tightening tool for lithium batteries

Abstract

The present invention provides a bolt sequential tightening tool for lithium batteries in the field of lithium battery assembly technology, comprising: a shell, with a plurality of first light holes, a plurality of second light holes, and two third light holes arranged longitudinally, and at least four notches arranged on the side; a plurality of threaded holes arranged around the third light hole; two guide pins, inserted into the third light hole, and locked to the threaded holes by bolts; at least four support blocks, locked to the side of the shell through notches; a plurality of indicator lights, arranged in the second light hole; a plurality of photoelectric sensor groups, arranged around the first light hole; a plurality of label groups, arranged around the first light hole; a PLC, electrically connected to the indicator lights and the photoelectric sensor group. The advantages of the present invention are: realizing the sequence of the bolt tightening process, torque, whether all bolts are screwed in, and prompting the screwing process of the bolts, greatly improving the qualified rate of lithium battery assembly.

Description

Technical Field

[0001] The invention relates to the technical field of lithium battery assembly, and in particular to a bolt sequential tightening tool used for lithium batteries. Background Art

[0002] Lithium batteries need to be assembled after production. The screwing depth and torque of the bolts during the assembly process directly affect the assembly quality of lithium batteries, and there are many places where bolts need to be tightened. Traditionally, there are two methods of tightening: robot tightening and manual tightening. Since robots are expensive, small-scale production workshops usually use manual tightening. However, the traditional manual tightening method has the following disadvantages:

[0003] 1. There is no reminder of the order of tightening the bolts, and the number of bolts that need to be tightened is large, so employees tighten them in a disorderly order, which is not standardized; 2. There is no reminder of the torque for tightening the bolts, and the employees can only judge based on their experience, which often results in unqualified torque; 3. There is no reminder of the completion of bolt tightening, so some bolts are often screwed in repeatedly or missed, affecting the qualified rate of lithium batteries; 4. There is no error reminder during the process of tightening the bolts, so employees cannot make timely adjustments, affecting the qualified rate of lithium batteries.

[0004] Therefore, how to provide a bolt sequential tightening tool for lithium batteries to realize the sequence and torque of the bolt tightening process, whether all bolts are screwed in, and prompt the bolt screwing process, thereby improving the qualified rate of lithium battery assembly, has become an urgent problem to be solved. Summary of the invention

[0005] The technical problem to be solved by the present invention is to provide a bolt sequential tightening tool for lithium batteries, which can realize the sequence and torque of the bolt tightening process, whether all bolts are screwed in, and prompt the bolt screwing process, thereby improving the qualified rate of lithium battery assembly.

[0006] The present invention is implemented as follows: a bolt sequential tightening tool for lithium batteries, comprising:

[0007] A housing having a plurality of first light holes, a plurality of second light holes, and two third light holes disposed in the longitudinal direction, and at least four notches disposed on the side; a plurality of threaded holes are disposed around the third light hole;

[0008] Two guide pins are inserted into the third light hole and are locked on the threaded hole by bolts;

[0009] At least four support blocks are locked to the side of the housing through the notches;

[0010] A plurality of indicator lights are disposed in the second light hole, with the light-emitting ends facing upward;

[0011] A plurality of photoelectric sensor groups are arranged around the first light hole and located at the lower end of the housing;

[0012] A plurality of label groups are arranged around the first light hole and located at the upper end of the housing;

[0013] A PLC is electrically connected to the indicator light and the photoelectric sensor group.

[0014] Furthermore, it also includes at least two handles, which are arranged at the upper end of the shell.

[0015] Furthermore, a plurality of holes are provided in the center of the shell.

[0016] Furthermore, the photoelectric sensor group includes a photoelectric transmitter and a photoelectric receiver; the photoelectric transmitter and the photoelectric receiver are symmetrically arranged on two sides of the first light hole.

[0017] Furthermore, the label group includes a bolt model label and a bolt tightening sequence label; the bolt model label and the bolt tightening sequence label are arranged around the first light hole.

[0018] The advantages of the present invention are:

[0019] 1. By setting a label group around the first light hole, the order of tightening the bolts and the type of bolts to be used are prompted, so that employees can tighten them according to the set type and order, which improves the standardization of operations and further improves the qualified rate of lithium battery assembly.

[0020] 2. By setting the indicator light, photoelectric sensor group and PLC, the torque of the bolt tightening process is monitored, the tightening sequence of the bolts is monitored, and whether all the bolts are screwed in is monitored. The indicator light is used to give corresponding prompts, which avoids employees from assembling according to the preset assembly process, greatly improving the qualified rate of lithium battery assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The present invention will be further described below in conjunction with embodiments with reference to the accompanying drawings.

[0022] Figure 1 The present invention is a schematic structural diagram of a bolt sequential tightening tool for lithium batteries.

[0023] Figure 2 It is a structural schematic diagram of the housing of the present invention.

[0024] Figure 3 It is a bottom view of a bolt sequential tightening tool used for lithium batteries according to the present invention.

[0025] Figure 4The invention discloses a circuit principle block diagram of a bolt sequential tightening tool applied to a lithium battery.

[0026] Figure 5 The present invention is a schematic diagram of the use of a bolt sequential tightening tool for lithium batteries.

[0027] Marking Description:

[0028] 100-A bolt sequence tightening tool for lithium batteries, 1-housing, 2-guide pin, 3-support block, 4-indicator light, 5-photoelectric sensor group, 6-label group, 7-PLC, 8-handle, 9-lithium battery, 11-first light hole, 12-second light hole, 13-third light hole, 14-slot, 15-hole, 16-threaded hole, 51-photoelectric transmitter, 52-photoelectric receiver, 61-bolt model label, 62-bolt tightening sequence label. DETAILED DESCRIPTION

[0029] Please refer to Figures 1 to 5 As shown, a preferred embodiment of a bolt sequential tightening tool 100 applied to a lithium battery of the present invention comprises:

[0030] An aluminum housing 1 is longitudinally provided with a plurality of first light holes 11 for tightening bolts, a plurality of second light holes 12 for installing indicator lights 4, and a third light hole 13, and at least four notches 14 are provided on the side; a plurality of threaded holes 16 are arranged around the third light hole 13;

[0031] The second guide pin 2 is inserted into the third light hole 13 and is bolted to the threaded hole 16; the guide pin 2 is used to guide the tightening tool 100 so that it is aligned with the lithium battery 9 to be assembled;

[0032] At least four support blocks 3 are locked to the side of the housing 1 through the notches 14; the support blocks 3 are used to support the tightening tool 100 on the lithium battery 9 to be assembled;

[0033] A plurality of indicator lights 4 are arranged in the second light hole 12, with the light-emitting end facing upward; the indicator lights 4 are used to indicate the order of tightening the bolts, whether the torque is correct, and whether all the bolts have been tightened;

[0034] A plurality of photoelectric sensor groups 5 are arranged around the first light hole 11 and at the lower end of the housing 1; the photoelectric sensor group 5 is used to identify the torque, tightening sequence and whether all bolts have been tightened during the bolt tightening process;

[0035] A plurality of label groups 6 are arranged around the first light hole 11 and located at the upper end of the housing 1;

[0036] A PLC7 is electrically connected to the indicator light 4 and the photoelectric sensor group 5; the PLC7 is used to control the photoelectric sensor group 5 to identify the torque of the bolt, the order of tightening the bolts, and control the indicator light 4 to give corresponding prompts. In the specific implementation, it is only necessary to select a PLC that can realize this function from the existing technology, and it is not limited to any model, and the control program is well known to those skilled in the art, which can be obtained by those skilled in the art without creative labor.

[0037] It also includes at least two handles 8 , which are arranged at the upper end of the housing 1 ; the handles 8 are provided to facilitate the transportation of the tightening tool 100 .

[0038] A plurality of holes 15 are disposed at the center of the housing 1 , which reduces the overall weight of the tightening tool 100 and facilitates the transportation of the tightening tool 100 .

[0039] The photoelectric sensor group 5 includes a photoelectric transmitter 51 and a photoelectric receiver 52; the photoelectric transmitter 51 and the photoelectric receiver 52 are symmetrically arranged on both sides of the first light hole 11; the photoelectric receiver 52 is used to receive the photoelectric signal emitted by the photoelectric transmitter 51, and judge the screwing state of the bolt by identifying whether the photoelectric receiver 51 receives the photoelectric signal. In the specific implementation, it is only necessary to select a photoelectric receiver and a photoelectric transmitter that can realize this function from the existing technology, and it is not limited to any model. This can be obtained by technical personnel in this field without creative labor.

[0040] The label group 6 includes a bolt model label 61 and a bolt tightening sequence label 62; the bolt model label 61 and the bolt tightening sequence label 62 are arranged around the first light hole 11; the bolt model label 61 is used to identify the model of the bolt, and the bolt tightening sequence label 62 is used to identify the order of tightening the bolts.

[0041] Working principle of the present invention:

[0042] After the materials of the lower shell of the lithium battery 9 are assembled, they flow into the upper and lower shell tightening station. The employee aligns the upper and lower shells of the lithium battery 9, and places the tightening tool 100 on the top of the lithium battery 9 by grasping the handle 8, inserting the guide pin 2 into the corresponding hole on the lithium battery 9, and the support block 3 is supported on the lithium battery 9, completing the placement of the tightening tool 100.

[0043] The initial state of all indicator lights 4 is set to flashing green through the PLC7. The corresponding bolts are screwed in according to the preset order through the bolt model label 61 and the bolt tightening sequence label 62. When the photoelectric sensor group 5 recognizes that the screw-in torque of the bolt meets the requirement, the signal is transmitted to the PLC7. The PLC7 controls the corresponding indicator light 4 to change from flashing green to long green, and the employee proceeds to tighten the next bolt. When all the bolts are tightened, all the indicator lights 4 turn to long green.

[0044] During the bolt tightening process, if the screwing torque does not match the preset torque, and the screwing order of the bolts does not match the preset order, the corresponding indicator light 4 will turn red and stay on for a long time as a reminder; if a bolt is missed, the corresponding indicator light 4 will flash green, realizing real-time monitoring and prompting of the bolt screwing process.

[0045] In summary, the advantages of the present invention are:

[0046] 1. By setting a label group around the first light hole, the order of tightening the bolts and the type of bolts to be used are prompted, so that employees can tighten them according to the set type and order, which improves the standardization of operations and further improves the qualified rate of lithium battery assembly.

[0047] 2. By setting the indicator light, photoelectric sensor group and PLC, the torque of the bolt tightening process is monitored, the tightening sequence of the bolts is monitored, and whether all the bolts are screwed in is monitored. The indicator light is used to give corresponding prompts, which avoids employees from assembling according to the preset assembly process, greatly improving the qualified rate of lithium battery assembly.

[0048] Although the specific implementation modes of the present invention are described above, those skilled in the art should understand that the specific implementation modes described are only illustrative and are not intended to limit the scope of the present invention. Equivalent modifications and changes made by those skilled in the art in accordance with the spirit of the present invention should be included in the scope of protection of the claims of the present invention.

Claims

1. A bolt sequential tightening tool for lithium batteries, characterized by: include: A shell body, with a plurality of first light holes, a plurality of second light holes, and two third light holes arranged in the longitudinal direction, and at least four notches arranged on the side; a plurality of threaded holes are arranged around the third light holes; a plurality of holes are arranged in the center of the shell body; Two guide pins are inserted into the third light hole and are locked on the threaded hole by bolts; At least four support blocks are locked to the side of the housing through the notches; A plurality of indicator lights are disposed in the second light hole, with the light-emitting ends facing upward; A plurality of photoelectric sensor groups are arranged around the first light hole and located at the lower end of the housing; A plurality of label groups are arranged around the first light hole and located at the upper end of the housing; A PLC, electrically connected to the indicator light and the photoelectric sensor group; At least two handles are provided at the upper end of the shell.

2. A bolt sequential tightening tool for lithium batteries as claimed in claim 1, characterized in that: The photoelectric sensor group includes a photoelectric transmitter and a photoelectric receiver; the photoelectric transmitter and the photoelectric receiver are symmetrically arranged on two sides of the first light hole.

3. The bolt sequential tightening tool for lithium batteries according to claim 1, characterized in that: The label set includes a bolt model label and a bolt tightening sequence label; the bolt model label and the bolt tightening sequence label are arranged around the first light hole.

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