Intermediate shift mechanism

Abstract

The utility model relates to the technical field of battery injection, and in particular to an intermediate transfer distance mechanism, comprising a plurality of transfer clamps, and also comprising a variable distance driving mechanism for driving two adjacent transfer clamps to move away from or towards each other; the variable distance driving mechanism comprises a moving seat connected to the transfer clamp at the outermost end, the moving seat can move along the moving direction of the transfer clamp, a connecting piece is arranged between two adjacent transfer clamps, one or more of the transfer clamps is equipped with a sliding piece that can move along the length direction of the connecting piece, and the sliding piece slides within the limit position of the connecting piece; when the moving seat moves toward the transfer clamp at the innermost end, the two adjacent transfer clamps will be driven to move closer to each other, and when the battery enters the intermediate transfer position, the robot needs to move less; when the moving seat moves toward the transfer clamp away from the innermost end, the two adjacent transfer clamps will move away from each other, the sliding piece will move along the length direction of the connecting piece, and the subsequent robot can synchronously clamp and transfer multiple batteries to the injection station at the same time.

Description

Technical Field

[0001] The utility model relates to the technical field of battery liquid injection, in particular to an intermediate shifting mechanism. Background Art

[0002] Lithium-ion battery is a secondary battery (rechargeable battery) that mainly relies on the movement of lithium ions between the positive and negative electrodes to work. Lithium-ion battery has the characteristics of high energy density, high average output voltage, low self-discharge, excellent cycle performance, fast charge and discharge, high output power and long service life.

[0003] In the production process of lithium-ion batteries, liquid injection is a crucial process, and the quality of liquid injection directly affects the battery yield. In order to maximize the battery performance, secondary liquid injection is currently used during liquid injection, that is, first inject liquid into the molded lithium battery shell, and then age the battery after the first injection, so that the electrolyte infiltrates into the pole piece, participates in the chemical reaction, and realizes the conversion of chemical energy and electrical energy; after the conversion is completed, the battery is injected for the second time. The secondary liquid injection is a process of replenishing the electrolyte, and the sealing must be taken into account during the secondary liquid injection.

[0004] Before the battery is injected with liquid, it needs to undergo a series of inspections and transportation. During the transportation process, the battery needs to be transferred. When the batteries transferred to the transfer position enter the injection fixture, usually multiple batteries are transferred to the injection fixture at the same time. When the batteries enter the transfer position, they are usually weighed and transferred to the transfer position one by one by a robot. The transfer fixtures of the existing transfer position are usually set with a fixed spacing so that subsequent robots can transfer multiple batteries to the injection fixture at the same time. When the spacing is too large, the robot needs to move a longer stroke after weighing, which affects the transfer efficiency. Utility Model Content

[0005] The utility model aims to provide a mid-shift distance changing mechanism in view of the deficiencies in the prior art.

[0006] To achieve the above purpose, the technical solution of the utility model is as follows:

[0007] The intermediate transfer distance changing mechanism comprises a plurality of intermediate transfer fixtures arranged at intervals, and also comprises a distance changing driving mechanism for driving two adjacent intermediate transfer fixtures to move away from or approach each other;

[0008] The variable pitch drive mechanism includes a movable seat connected to the outermost transfer clamp, the movable seat can move along the moving direction of the transfer clamp, a connecting piece is arranged between two adjacent transfer clamps, one or more of the transfer clamps is equipped with a sliding piece that can move along the length direction of the connecting piece, and the connecting piece is provided with a limiting structure for limiting the movement of the sliding piece.

[0009] Further: the intermediate transfer distance mechanism also includes a guide support for guiding the movement of multiple transfer fixtures, the guide support includes a variable distance support plate, the variable distance support plate is provided with a variable distance guide rail along the length direction, and the transfer fixture is equipped with a variable distance sliding seat that slides with the variable distance guide rail.

[0010] Further: the connecting member includes a first connecting bar, an intermediate connecting bar and a second connecting bar; the intermediate connecting bar is located between the first connecting bar and the second connecting bar, and the length of the intermediate connecting bar is greater than the length of the first connecting bar and the second connecting bar.

[0011] Furthermore: when two adjacent transfer clamps are close to each other, the first connecting bar and the second connecting bar are close to each other, and the middle connecting bar can be inserted into the first connecting bar and the second connecting bar respectively.

[0012] Further: the transfer clamp is divided into a first transfer clamp, a second transfer clamp, a third transfer clamp, a fourth transfer clamp, a fifth transfer clamp and a sixth transfer clamp which are arranged in sequence; the first connecting bar is installed between the first transfer clamp and the second transfer clamp; the second connecting bar is installed between the fifth transfer clamp and the sixth transfer clamp, the middle connecting bar is installed in the fourth transfer clamp, one end of the middle connecting bar is connected to the third transfer clamp, and the other end is connected to the fifth transfer clamp.

[0013] Further: the first connecting strip is formed with a first sliding groove along the length direction, the sliding part includes a first sliding block installed on the second transfer clamp and a second sliding block installed on the sixth transfer clamp, the first sliding block slidingly cooperates with the first sliding groove; the second connecting strip is formed with a second sliding groove along the length direction, the second sliding block slidingly cooperates with the second sliding groove.

[0014] Further: intermediate sliding grooves are formed on both sides of the middle of the intermediate connecting strip along the length direction; the sliding member also includes intermediate sliding blocks respectively installed on the third transfer fixture and the fifth transfer fixture, and the intermediate sliding blocks are slidably matched with the intermediate sliding grooves.

[0015] Furthermore: the lengths of the first sliding groove, the second sliding groove and the middle sliding groove are all the same; the lengths of the first connecting bar and the second connecting bar are the same.

[0016] Furthermore: the first connecting bar, the middle connecting bar and the second connecting bar are staggered in the moving direction of the transfer fixture; the number of the first connecting bar and the second connecting bar are both two, and a first guide channel for inserting a part of the middle connecting bar is formed between the two first connecting bars, and a second guide channel for inserting another part of the middle connecting bar is formed between the two second connecting bars.

[0017] Further: the variable pitch drive mechanism also includes a linear module, the driving end of the linear module is connected to the moving seat

[0018] The beneficial effects of the utility model are as follows: when the movable seat moves toward the innermost transfer clamp, it will drive the two adjacent transfer clamps to approach each other, so that the distance between the two adjacent transfer clamps is shortened, and when the battery enters the transfer position, the robot needs to move less, and the efficiency of transfer is increased; when the movable seat moves away from the innermost transfer clamp, the two adjacent transfer clamps are away from each other, and some sliding parts installed on the transfer clamps will move along the length direction of the connecting parts, and the sliding parts will not exceed the stroke when moving; the subsequent robot can synchronously clamp and transfer multiple batteries to the liquid filling station at the same time, further improving the transfer efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural schematic diagram of the variable pitch drive mechanism, that is, a state diagram when multiple transfer fixtures are spaced apart.

[0020] Figure 2 This is a state diagram when multiple transfer fixtures are approaching each other.

[0021] Figure 3 This is a state diagram when multiple transfer fixtures are approaching each other.

[0022] Figure 4 Schematic diagram of the exploded structure of the clamping station.

[0023] Figure 5 Schematic diagram of the structure of the guide support.

[0024] Reference numerals include:

[0025] 1- Variable pitch drive mechanism,

[0026] 11- linear module, 12- moving seat, 13- guide support, 14- variable pitch support plate,

[0027] 15-variable pitch guide rail, 16-variable pitch sliding seat,

[0028] 2-Connectors,

[0029] 21-first connecting bar, 22-middle connecting bar, 23-second connecting bar, 24-sliding member,

[0030] 25-first sliding block, 26-middle sliding block, 27-second sliding block,

[0031] 3-Limiting structure,

[0032] 31-first sliding groove, 32-middle sliding groove, 33-second sliding groove, 34-first transfer fixture,

[0033] 35-second transfer fixture, 36-third transfer fixture, 37-fourth transfer fixture,

[0034] 38-fifth transfer fixture, 39-sixth transfer fixture,

[0035] 4-Clamping station,

[0036] 40-clamping base plate, 41-first clamping block, 42-second clamping block, 43-driving block,

[0037] 44- top driving roller, 45- driving groove, 46- driving bar, 47- bottom rolling wheel,

[0038] 48-first lifting drive plate, 49-second lifting drive plate, 50-lifting cylinder. DETAILED DESCRIPTION

[0039] The utility model is described in detail below with reference to the accompanying drawings.

[0040] like Figure 1-5 As shown, the intermediate distance-changing mechanism includes a plurality of transfer clamps arranged at intervals, and also includes a distance-changing drive mechanism 1 for driving two adjacent transfer clamps to move away from or closer to each other; the distance-changing drive mechanism 1 includes a movable seat 12 connected to the outermost transfer clamp, the movable seat 12 can move along the moving direction of the transfer clamp, and a connecting member 2 is arranged between two adjacent transfer clamps, and one or more transfer clamps are equipped with a sliding member 24 that can move along the length direction of the connecting member 2.

[0041] When the movable seat 12 moves toward the innermost transfer fixture, it will drive the two adjacent transfer fixtures closer to each other, so that the distance between the two adjacent transfer fixtures is shortened. When the battery enters the transfer position, the robot needs to move less, and the efficiency of transfer is increased; when the movable seat 12 moves away from the innermost transfer fixture, the two adjacent transfer fixtures are away from each other, and some sliding parts 24 installed on the transfer fixture will move along the length direction of the connecting part 2, and the limiting structure 3 can prevent the sliding part 24 from moving beyond the stroke; the subsequent robot can synchronously clamp and transfer multiple batteries to the injection station at the same time, further improving the transfer efficiency.

[0042] Specifically, the intermediate transfer mechanism also includes a guide support 13 for guiding the movement of multiple transfer fixtures. The guide support 13 includes a variable distance support plate 14. The variable distance support plate 14 is provided with a variable distance guide rail 15 along the length direction. The transfer fixture is equipped with a variable distance sliding seat 16 that slides with the variable distance guide rail 15. When two adjacent transfer fixtures move, the stability of movement can be improved.

[0043] Preferably, there are two variable pitch guide rails 15 , which are respectively located on both sides of the variable pitch support plate 14 . A transfer fixture is supported by two variable pitch sliding seats 16 , which can further improve the stability of movement.

[0044] Furthermore, the variable pitch drive mechanism 1 also includes a linear module 11, the driving end of the linear module 11 is connected to the moving seat 12, and when the linear module 11 is working, it can drive the driving seat to move along the length direction of the linear module 11, thereby shortening or increasing the distance between two adjacent transfer fixtures.

[0045] Preferably, the linear module 11 can also be replaced by a telescopic cylinder, and the moving stroke of the telescopic end of the telescopic cylinder is the same as the length of the variable-pitch guide rail 15, so that two adjacent transfer fixtures can be arranged at equal distances.

[0046] Preferably, the connecting member 2 includes a first connecting bar 21, an intermediate connecting bar 22 and a second connecting bar 23; the intermediate connecting bar 22 is located between the first connecting bar 21 and the second connecting bar 23, and the length of the intermediate connecting bar 22 is greater than the length of the first connecting bar 21 and the second connecting bar 23, so that two adjacent transfer clamps are movably connected through the connecting bar; when the two adjacent transfer clamps are close to each other, the first connecting bar 21 and the second connecting bar 23 are close to each other, and the intermediate connecting bar 22 can be inserted into the first connecting bar 21 and the second connecting bar 23 respectively; when the two adjacent transfer clamps are close to each other, the first connecting bar 21, the intermediate connecting bar 22 and the second connecting bar 23 will not collide.

[0047] In one embodiment, the transfer fixture is divided into a first transfer fixture 34, a second transfer fixture 35, a third transfer fixture 36, a fourth transfer fixture 37, a fifth transfer fixture 38 and a sixth transfer fixture 39 which are arranged in sequence. The first connecting bar 21 is installed between the first transfer fixture 34 and the second transfer fixture 35; the second connecting bar 23 is installed between the fifth transfer fixture 38 and the sixth transfer fixture 39, and the middle connecting bar 22 is installed in the fourth transfer fixture 37. One end of the middle connecting bar 22 is connected to the third transfer fixture 36, and the other end is connected to the fifth transfer fixture 38. The six transfer fixtures are movably connected through three connecting bars and the sliding member 24. Under the drive of the variable pitch drive mechanism 1, two adjacent transfer fixtures move away from or close to each other.

[0048] Furthermore, the limiting structure 3 includes a first sliding groove 31 formed along the length direction of the first connecting strip 21, the sliding member 24 includes a first sliding block 25 installed on the second transfer clamp 35 and a second sliding block 27 installed on the sixth transfer clamp 39, and the second connecting strip 23 is formed with a second sliding groove 33 along the length direction. When the distance is changed, the first sliding block 25 slides with the first sliding groove 31, and the second sliding block 27 slides with the second sliding groove 33, which can prevent the first sliding block 25 and the second sliding block 27 from exceeding the stroke when sliding.

[0049] Furthermore, intermediate sliding grooves 32 are formed on both sides of the middle of the intermediate connecting strip 22 along the length direction; the sliding member 24 also includes an intermediate sliding block 26 respectively installed on the third transfer fixture 36 and the fifth transfer fixture 38, and the intermediate sliding block 26 is slidably matched with the intermediate sliding groove 32.

[0050] In this embodiment, as shown in the figure, when the movable seat 12 moves toward the innermost first transfer fixture 34, the sixth transfer fixture 39 moves along the second sliding groove 33 of the second connecting strip 23 through the second sliding block 27 to approach the fifth transfer fixture 38; when the sixth transfer fixture 39 abuts against the fifth transfer fixture 38, the fifth transfer fixture 38 moves along the middle sliding groove 32 to approach the fourth transfer fixture 37 through the middle sliding block 26; when the fifth transfer fixture 38 abuts against the fourth transfer fixture 37, the fourth transfer fixture 37 approaches the third transfer fixture 36. Move, and at the same time, the middle sliding block 26 of the third transfer clamp 36 slides and cooperates with the middle sliding groove 32 on the other side of the middle connecting strip 22; when the fourth transfer clamp 37 abuts against the third transfer clamp 36, the third transfer clamp 36 moves close to the second transfer clamp 35, and when the third transfer clamp 36 abuts against the second transfer clamp 35, the second transfer clamp 35 moves along the first sliding groove 31 close to the first transfer clamp 34 through the first sliding block 25, until the second transfer clamp 35 abuts against the first transfer clamp 34, thereby realizing the bonding of the six transfer clamps.

[0051] At this time, the first sliding block 25 installed in the second transfer fixture 35 abuts against the inner end of the first sliding groove 31, the middle sliding block 26 installed in the third transfer fixture 36 abuts against the outer end of the middle sliding groove 32 on the inner side, the middle sliding block 26 installed in the fifth transfer fixture 38 abuts against the inner end of the middle sliding groove 32 on the outer side, and the second sliding groove 33 installed in the sixth transfer fixture 39 abuts against the inner end of the second sliding groove 33. Thus, the six transfer fixtures are fitted to each other.

[0052] On the contrary, when the moving seat 12 moves toward the sixth transfer fixture 39, the two adjacent transfer fixtures will move in the opposite direction to the above description, so that the two adjacent transfer fixtures are separated from each other, achieving the effect of variable distance.

[0053] Furthermore, the lengths of the first sliding groove 31, the second sliding groove 33 and the middle sliding groove 32 are all the same; the lengths of the first connecting bar 21 and the second connecting bar 23 are the same; when the movable seat 12 moves to the maximum stroke toward the sixth transfer clamp 39, the distance between the fifth transfer clamp 38 and the sixth transfer clamp 39 is equal to the distance between the first transfer clamp 34 and the second transfer clamp 35; the distance between the third transfer clamp 36 and the fourth transfer clamp 37 is equal to the distance between the fourth transfer clamp 37 and the fifth transfer clamp 38.

[0054] Furthermore, the first connecting bar 21, the middle connecting bar 22 and the second connecting bar 23 are staggered in the moving direction of the transfer fixture; the number of the first connecting bar 21 and the second connecting bar 23 are both two, and a first guide channel for inserting a part of the middle connecting bar 22 is formed between the two first connecting bars 21, and a second guide channel for inserting another part of the middle connecting bar 22 is formed between the two second connecting bars 23; when the six transfer fixtures are fitted together, a part of the middle connecting bar 22 is inserted into the first guide channel, and the other part of the middle connecting bar 22 is inserted into the second guide channel, and at the same time, the first connecting bar 21 and the second connecting bar 23 are fitted together.

[0055] The distance between the second transfer fixture 35 and the third transfer fixture 36 is equal to the distance between the third transfer fixture 36 and the fourth transfer fixture 37, so that the distance between two adjacent transfer fixtures remains consistent; the subsequent manipulator can synchronously clamp and transfer multiple batteries to the injection station at the same time, further improving the transfer efficiency.

[0056] When the moving seat 12 moves to the sixth transfer fixture 39 to the maximum stroke, the first sliding block 25 installed on the second transfer fixture 35 abuts against the outer end of the first sliding groove 31, the middle sliding block 26 installed on the third transfer fixture 36 abuts against the inner end of the middle sliding groove 32 on the inner side, the middle sliding block 26 installed on the fifth transfer fixture 38 abuts against the outer end of the middle sliding groove 32 on the outer side, and the second sliding groove 33 installed on the sixth transfer fixture 39 abuts against the inner end of the second sliding groove 33. Thus, the six transfer fixtures are arranged at equal intervals.

[0057] Furthermore, each transfer fixture is provided with two clamping stations 4 for positioning the battery. Six transfer fixtures can transfer and position 12 batteries.

[0058] It should be noted that different numbers of transfer fixtures can be provided according to the cooperation between the above-mentioned connecting member 2 and the sliding member 24, so that different numbers of batteries can be transferred during transfer, and the practicality is further improved.

[0059] Furthermore, the clamping station 4 includes a first clamping block 41 and a second clamping block 42 arranged at intervals and a clamping base plate 40 supporting the first clamping block 41 and the second clamping block 42. A tension spring is arranged between the first clamping block 41 and the second clamping block 42. Under the elastic drive of the tension spring, the first clamping block 41 will approach the second clamping block 42 to initially clamp the battery.

[0060] The first clamping block 41 is a movable part. The first clamping block 41 is installed with a driving block 43. The driving block 43 is formed with a guiding slope. The clamping base plate 40 is installed with a top driving roller 44 that can move longitudinally. The top driving roller 44 is lifted and lowered to roll with the guiding slope of the driving block 43. When the top driving roller 44 is raised, the first clamping block 41 will move away from the second clamping block 42. At this time, it is in an open state, and the battery can be placed in the gap between the first clamping block 41 and the second clamping block 42; then when the top driving roller 44 descends, the first clamping block 41 is elastically driven by the tension spring, and the first clamping block 41 is close to the second clamping block 42 to clamp the battery.

[0061] Furthermore, the variable pitch support plate 14 is provided with a first lifting drive plate 48 capable of longitudinal movement, the clamping bottom plate 40 is provided with a driving groove 45, the driving groove 45 is provided with a longitudinally movable driving bar 46, the top of the top driving roller 44 is installed on the top of the driving bar 46, and the bottom of the driving bar 46 is provided with a bottom rolling wheel 47 in contact with the lifting drive plate, and when the first lifting drive plate 48 is raised, it can drive the top driving roller 44 to rise.

[0062] Furthermore, the first lifting drive plate 48 is arranged in the moving direction of the transfer fixture, and the first lifting drive plate 48 can drive the clamping stations 4 of multiple transfer fixtures to open and close at the same time.

[0063] A second lifting drive plate 49 is provided beside the first lifting drive plate 48. When the six transfer clamps are approached to fit together at the same time, the first lifting drive plate 48 can simultaneously drive the clamping stations 4 of the six transfer clamps to open and close; when the six transfer clamps are simultaneously moved away from each other to the maximum distance, the first lifting drive plate 48 can simultaneously drive the clamping stations 4 of the first transfer clamp 34, the second transfer clamp 35 and the third transfer clamp 36 to open and close; the second lifting drive plate 49 can simultaneously drive the clamping stations 4 of the fourth transfer clamp 37, the fifth transfer clamp 38 and the sixth transfer clamp 39 to open and close.

[0064] Preferably, there are two first lifting drive plates 48 and two second lifting drive plates 49 , and the two first lifting drive plates 48 can drive the two clamping stations 4 of a transfer fixture to open and close. The two first lifting drive plates 48 and the second lifting drive plates 49 can drive the 12 clamping stations 4 to open and close.

[0065] Preferably, the variable pitch support plate 14 is provided with a lifting cylinder 50 to drive the first lifting drive plate 48 and the second lifting drive plate 49 to rise and fall.

[0066] In summary, it can be seen that the utility model has the above-mentioned excellent characteristics, which can enhance the performance unprecedented in the prior art and become a product with great practical value.

[0067] The above contents are only preferred embodiments of the present invention. For ordinary technicians in this field, according to the concept of the present invention, there will be changes in the specific implementation methods and application scopes. The contents of this specification should not be understood as limiting the present invention.

Claims

1. Intermediate shifting mechanism, characterized by: It includes a plurality of transfer fixtures arranged at intervals, and also includes a variable distance driving mechanism for driving two adjacent transfer fixtures to move away from or approach each other; The variable pitch drive mechanism includes a movable seat connected to the outermost transfer clamp, the movable seat can move along the moving direction of the transfer clamp, a connecting piece is arranged between two adjacent transfer clamps, and one or more of the transfer clamps is equipped with a sliding piece that can move along the length direction of the connecting piece, and the sliding piece slides within the limit position of the connecting piece.

2. The intermediate shifting mechanism according to claim 1, characterized in that: The intermediate transfer mechanism also includes a guide support for guiding the movement of multiple transfer fixtures. The guide support includes a variable distance support plate. The variable distance support plate is provided with a variable distance guide rail along the length direction. The transfer fixture is equipped with a variable distance sliding seat that slides with the variable distance guide rail.

3. The intermediate shifting mechanism according to claim 1, characterized in that: The connecting member comprises a first connecting bar, a middle connecting bar and a second connecting bar; the middle connecting bar is located between the first connecting bar and the second connecting bar, and the length of the middle connecting bar is greater than the length of the first connecting bar and the second connecting bar.

4. The intermediate shifting mechanism according to claim 3, characterized in that: When two adjacent transfer clamps are close to each other, the first connecting bar and the second connecting bar are close to each other, and the middle connecting bar can be inserted into the first connecting bar and the second connecting bar respectively.

5. The intermediate shifting mechanism according to claim 4, characterized in that: The transfer clamp is divided into a first transfer clamp, a second transfer clamp, a third transfer clamp, a fourth transfer clamp, a fifth transfer clamp and a sixth transfer clamp which are arranged in sequence; the first connecting bar is installed between the first transfer clamp and the second transfer clamp; the second connecting bar is installed between the fifth transfer clamp and the sixth transfer clamp, and the middle connecting bar is installed in the fourth transfer clamp, one end of the middle connecting bar is connected to the third transfer clamp, and the other end is connected to the fifth transfer clamp.

6. The intermediate shifting mechanism according to claim 5, characterized in that: The first connecting strip is formed with a first sliding groove along the length direction, and the sliding part includes a first sliding block installed on the second transfer clamp and a second sliding block installed on the sixth transfer clamp, and the first sliding block is slidably matched with the first sliding groove; the second connecting strip is formed with a second sliding groove along the length direction, and the second sliding block is slidably matched with the second sliding groove.

7. The intermediate shifting mechanism according to claim 6, characterized in that: The middle two sides of the middle connecting strip are respectively formed with middle sliding grooves along the length direction; the sliding member also includes middle sliding blocks respectively installed on the third transfer fixture and the fifth transfer fixture, and the middle sliding blocks are slidably matched with the middle sliding grooves.

8. The intermediate shifting mechanism according to claim 7, characterized in that: The lengths of the first sliding groove, the second sliding groove and the middle sliding groove are all the same; the lengths of the first connecting bar and the second connecting bar are the same.

9. The intermediate shifting mechanism according to claim 8, characterized in that: The first connecting strip, the middle connecting strip and the second connecting strip are staggered in the moving direction of the transfer fixture; the number of the first connecting strip and the second connecting strip are both two, a first guide channel for inserting a part of the middle connecting strip is formed between the two first connecting strips, and a second guide channel for inserting the other part of the middle connecting strip is formed between the two second connecting strips.

10. The intermediate shifting mechanism according to any one of claims 1 to 9, characterized in that: The variable pitch drive mechanism also includes a linear module, and a driving end of the linear module is connected to the moving seat.

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