Pitch changing device and material moving device

Abstract

The utility model discloses a pitch changing device and a material moving device, the pitch changing device comprises a sliding plate, the sliding plate can slide in a reciprocating mode in the first direction, at least two sliding grooves formed in the first direction are formed in the sliding plate, the at least two sliding grooves are obliquely formed, and the inclination angles of the at least two sliding grooves are different; the number of the sliding pieces is equal to that of the sliding grooves, and the sliding pieces are arranged in the corresponding sliding grooves in a sliding mode; the number of the material taking assemblies is equal to that of the sliding parts, the material taking assemblies are connected with the sliding parts in a one-to-one correspondence mode, the sliding parts drive the material taking assemblies to move in the second direction when sliding so that the distance between the at least two material taking assemblies can be increased or decreased, and the second direction is the arrangement direction of the at least two material taking assemblies; the second direction is perpendicular to the first direction. After the sliding plate slides by the set distance, the material taking assemblies can stably move by the matched distance, so that the distance between the material taking assemblies meets the requirement, and therefore the distance between workpieces such as pole pieces is stable and high-precision adjustment is achieved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of battery production equipment, and in particular to a pitch changing device and a material moving device. BACKGROUND

[0002] In the production process of lithium batteries, the pitch of the electrode sheets at adjacent two stations may be different, and therefore the pitch of the electrode sheets needs to be changed to adapt to the requirements of different stations on the pitch of the electrode sheets. The pitch changing mechanism disclosed in Publication No. CN210557713U includes a pitch changing rod, a plurality of spiral grooves are arranged on the pitch changing rod, the pitch between adjacent two spiral grooves increases or decreases from the start end to the end of the spiral groove, a connecting rod connecting a material taking assembly is slidably arranged in the spiral groove, and therefore the pitch between the connecting rods is adjusted by forward rotation or reverse rotation of the pitch changing rod, so as to adjust the pitch of the electrode sheets taken by the material taking assembly.

[0003] However, the connecting rod of the above pitch changing mechanism is slidably arranged in the spiral groove, and the spiral structure of the spiral groove cannot stably fix the position of the connecting rod. When the pitch changing rod is rotated forward or reversely to the target pitch position, the connecting rod is easily reciprocally slid within a small range, so that the taking position of the material taking assembly has an error, and the pitch between adjacent material taking assemblies also has an error, and there are defects of poor stability of electrode sheet taking and poor precision of electrode sheet pitch. CONTENT OF THE UTILITY MODEL

[0004] To solve the above defects in the prior art, the purpose of the present application is to provide a pitch changing device and a material moving device to stably and accurately adjust the pitch of the electrode sheets.

[0005] The first aspect of the present application provides a pitch changing device, comprising:

[0006] A sliding plate, which is reciprocally slidable along a first direction, and at least two sliding grooves are arranged on the sliding plate along the first direction, and the at least two sliding grooves are arranged at different inclination angles.

[0007] A sliding member, the number of which is equal to the number of the sliding grooves, and the sliding member is slidably arranged in the corresponding sliding groove.

[0008] A material taking assembly, the number of which is equal to the number of the sliding members, and the material taking assembly is connected with the sliding member one by one, and the sliding member drives the material taking assembly to move along a second direction when the sliding member slides, so as to increase or decrease the pitch between the at least two material taking assemblies, and the second direction is the arrangement direction of the at least two material taking assemblies, and the second direction is perpendicular to the first direction.

[0009] As a preferred embodiment, in the first aspect of the present application, the material taking assembly includes a connecting member and a first suction disc, and the two ends of the connecting member are respectively connected with the first suction disc and the corresponding sliding member.

[0010] As a preferred implementation, in the first aspect of the present application, the material taking assembly is connected with a first guide rail arranged along the second direction, and the material taking assembly is reciprocable along the first guide rail to increase or decrease the distance between the at least two material taking assemblies.

[0011] As a preferred implementation, in the first aspect of the present application, the corresponding ends of the at least two chutes are arranged along the second direction, the sliding member is a cam follower, the material taking assembly is connected with the corresponding cam follower, the sliding plate is reciprocable along the first direction to drive the cam follower to reciprocate along the corresponding chute, and the corresponding material taking assembly is driven to reciprocate along the second direction to increase or decrease the distance between the at least two material taking assemblies.

[0012] As a preferred implementation, in the first aspect of the present application, the sliding plate is slidingly connected with a second guide rail arranged along the first direction, and the sliding plate is provided with a rail groove matched with the second guide rail, and the second guide rail is located in the rail groove, so that the sliding plate is reciprocable along the second guide rail.

[0013] As a preferred implementation, in the first aspect of the present application, the sliding plate is driven by a first driving air cylinder to reciprocate along the first direction, and the piston rod of the first driving air cylinder is fixedly connected with the sliding plate.

[0014] As a preferred implementation, in the first aspect of the present application, the sliding plate is provided with a buffer, and the height of the buffer along the first direction is adjustable.

[0015] The second aspect of the present application provides a material moving device, which comprises a material moving assembly and the above-described distance changing device, and the distance changing device is mounted on the material moving assembly to be moved between different stations by the material moving assembly.

[0016] As a preferred implementation, in the second aspect of the present application, the material moving assembly comprises a servo motor, a transmission mechanism and a connecting frame, the output end of the servo motor is connected with the transmission mechanism, the connecting frame is connected with the transmission mechanism to move linearly along the transmission mechanism, and the distance changing device is mounted on the connecting frame.

[0017] As a preferred implementation, in the second aspect of the present application, the distance changing device is mounted on the connecting frame by a second driving air cylinder, the second driving air cylinder is fixed on the connecting frame, and the piston rod of the second driving air cylinder is connected with the distance changing device.

[0018] As a preferred implementation, in the second aspect of the present application, a material receiving assembly is arranged on the station, the distance changing device is moved by the material moving assembly to place the changed workpiece on the corresponding material receiving assembly, and the material moving device is provided with a detection device to detect the workpiece on the material receiving assembly.

[0019] The distance changing device and the material moving device provided by the present application have the following technical effects:

[0020] The at least two sliding grooves on the sliding plate are arranged at different inclination angles relative to the first direction. When the sliding plate slides along the first direction, the sliding pieces arranged in the sliding grooves can move along the sliding grooves, thereby driving the material taking assemblies to move along the second direction, so as to increase or decrease the spacing between the material taking assemblies, and further increase or decrease the spacing between the workpieces such as the pole pieces on the material taking assemblies. The distance that the sliding plate slides along the first direction directly determines the distance that the sliding pieces slide in the sliding grooves, thereby determining the distance that the material taking assemblies move along the second direction. After the sliding plate slides by a set distance, the material taking assemblies can stably move by an adapted distance, so that the spacing between the material taking assemblies meets the requirements, and further the spacing between the workpieces such as the pole pieces is stably and highly accurately adjusted. In this way, after the spacing between the workpieces such as the pole pieces is adjusted by the variable spacing device, the workpieces can be accurately transferred to the next work station, so as to ensure the accuracy of subsequent work station operations. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 It is a structural schematic diagram of the variable spacing device of the present application;

[0022] Figure 2 It is a structural schematic diagram of the material transfer device from a first perspective;

[0023] Figure 3 It is a structural schematic diagram of the material transfer device from a second perspective; Figure 2

[0024] Figure 4 It is a structural schematic diagram of the material transfer device from a second perspective;

[0025] Figure 5 It is a structural schematic diagram of the material transfer device from a second perspective; Figure 4 It is an enlarged view of position A in FIG. 5;

[0026] Reference signs:

[0027] 1, sliding plate; 11, sliding groove; 12, rail groove; 2, sliding piece; 3, material taking assembly; 31, connecting piece; 32, first suction cup; 41, first guide rail; 42, second guide rail; 51, first driving cylinder; 52, second driving cylinder; 6, buffer; 7, material transfer assembly; 71, servo motor; 72, transmission mechanism; 73, connecting frame; 8, material receiving assembly; 81, second suction cup; 9, detection device. DETAILED DESCRIPTION

[0028] In order to better understand and implement, the technical solutions in the embodiments of the present application will be clearly and completely described below in combination with the drawings in the embodiments of the present application.

[0029] ​In the description of the present application, it should be noted that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the purpose of facilitating the description of the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0030] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in the description of the present application herein is only for the purpose of describing specific embodiments and is not intended to limit the present application.

[0031] Embodiment 1

[0032] Referring to Figure 1 The present embodiment provides a variable distance device, which comprises a sliding plate 1, a sliding piece 2 and a material taking assembly 3. The sliding plate 1 can reciprocate along a first direction, and at least two slide grooves 11 are formed on the sliding plate 1 and arranged along the first direction. The at least two slide grooves 11 are arranged at different angles of inclination. The number of the sliding pieces 2 is equal to the number of the slide grooves 11, and the sliding pieces 2 are slidably arranged in the corresponding slide grooves 11. The number of the material taking assemblies 3 is equal to the number of the sliding pieces 2, and the material taking assemblies 3 are connected to the sliding pieces 2 one by one. When the sliding pieces 2 slide, the material taking assemblies 3 are driven to move along a second direction to increase or decrease the distance between the at least two material taking assemblies 3. The second direction is the arrangement direction of the at least two material taking assemblies 3, and the second direction is perpendicular to the first direction.

[0033] It should be noted that the first direction is taken as the vertical direction and the second direction is taken as the horizontal direction in the embodiment for illustration, and in actual application, the first direction and the second direction can be selected as any direction as needed. When the sliding plate 1 is located at the upper end starting position, the sliding piece 2 is located at the lower end of the corresponding slide groove 11, and the distance between the adjacent two material taking assemblies 3 is the smallest. As the sliding plate 1 slides downward, the sliding piece 2 gradually slides to the upper side along the corresponding slide groove 11, and drives the corresponding material taking assembly 3 to move horizontally, such as left and right movement, forward and backward movement, etc., depending on the specific structure, so as to gradually increase the distance between the adjacent two material taking assemblies 3. When the sliding plate 1 slides to the lower end, the sliding piece 2 slides to the upper end of the corresponding slide groove 11, and the distance between the adjacent two material taking assemblies 3 is the largest. Conversely, when the sliding plate 1 slides upward, the sliding piece 2 gradually slides downward along the corresponding slide groove 11, and drives the corresponding material taking assembly 3 to move horizontally, so as to gradually decrease the distance between the adjacent two material taking assemblies 3.

[0034] It is worth noting that at least two sliding grooves 11 are arranged at different inclination angles, so that when the sliding member 2 slides along the corresponding sliding groove 11, the corresponding material taking assembly 3 can be moved to change the distance between adjacent material taking assemblies 3. The inclination angle of the sliding groove 11 is not specifically limited here. Different working conditions require different distances to be adjusted, and the inclination angle of the corresponding sliding groove 11 also differs. The actual working condition can be determined, as long as the inclination angle and length of the sliding groove 11 can meet the distance adjustment requirements.

[0035] Based on this, at least two sliding grooves 11 on the sliding plate 1 are arranged at different inclination angles relative to the first direction. When the sliding plate 1 slides in the first direction, the sliding member 2 arranged in the sliding groove 11 can move along the sliding groove 11, thereby driving the material taking assembly 3 to move in the second direction, so as to increase or decrease the distance between the material taking assemblies 3, and then realize the increase or decrease of the distance between the workpieces such as the pole pieces on the material taking assembly 3. The distance that the sliding plate 1 slides in the first direction directly determines the distance that the sliding member 2 slides in the sliding groove 11, thereby determining the distance that the material taking assembly 3 moves in the second direction. After the sliding plate 1 slides a set distance, the material taking assembly 3 can stably move an adapted distance, so that the distance between the material taking assemblies 3 meets the requirements, and then realizes the stable and high-precision adjustment of the distance between the workpieces such as the pole pieces.

[0036] The material taking assembly 3 includes a connecting piece 31 and a first suction cup 32, and the two ends of the connecting piece 31 are respectively connected to the first suction cup 32 and the corresponding sliding member 2. This embodiment takes the workpiece as an example of a pole piece, and the first suction cup 32 is used to suck the pole piece. One end of the connecting piece 31 is connected to the sliding member 2, and the other end of the connecting piece 31 is connected to the first suction cup 32. In this way, when the sliding plate 1 slides in the first direction, the sliding member 2 arranged in the sliding groove 11 can move along the sliding groove 11, thereby driving the connecting piece 31 and the first suction cup 32 to move in the second direction, so as to increase or decrease the distance between the pole pieces.

[0037] The material taking assembly 3 is connected with a first guide rail 41, and the first guide rail 41 is arranged in the second direction. The material taking assembly 3 can reciprocate along the first guide rail 41, so as to increase or decrease the distance between at least two material taking assemblies 3. When the sliding plate 1 slides in the first direction to drive the material taking assembly 3, i.e., the connecting piece 31 and the first suction cup 32, to move in the second direction, the connecting piece 31 can move along the first guide rail 41, thereby improving the smoothness of the movement of the connecting piece 31, and the first guide rail 41 can guide the movement of the connecting piece 31 to ensure that the connecting piece 31 stably moves in the second direction. The first guide rail 41 can be arranged at intervals in the first direction. Figure 1 As shown in the figure, two or more first guide rails 41 can be arranged at intervals in the first direction to comprehensively consider the cost, processing technology, and guiding effect, and select an appropriate number.

[0038] Corresponding ends of the at least two sliding grooves 11 are arranged along the second direction, the sliding plate 1 is a cam follower, the taking component 3 is connected with the corresponding cam follower, the sliding plate 1 reciprocates along the first direction to drive the cam follower to reciprocate along the corresponding sliding groove 11, and the corresponding taking component 3 is driven to reciprocate along the second direction, so that the distance between the at least two taking components 3 increases or decreases. Figure 1 The four sliding grooves 11 are shown and arranged symmetrically in pairs, when the sliding plate 1 slides along the first direction, the four cam followers can synchronously slide along the corresponding sliding grooves 11, thereby driving the corresponding connecting pieces 31 and the first suction cups 32 to move along the second direction, thereby improving the accuracy of the distance adjustment.

[0039] On the basis of the above structure, the sliding plate 1 is slidingly connected with a second guide rail 42, the second guide rail 42 is arranged along the first direction, the sliding plate 1 is provided with a rail groove 12 matched with the second guide rail 42, and the second guide rail 42 is located in the rail groove 12, so that the sliding plate 1 can reciprocate along the second guide rail 42. The second guide rail 42 is arranged along the first direction, and the sliding plate 1 slides along the second guide rail 42, which is beneficial to improve the smoothness of the sliding plate 1, and can be guided by the second guide rail 42 to ensure that the sliding plate 1 stably and accurately moves along the second direction. The second guide rail 42 can be arranged at the central axis of the sliding plate 1, or as shown in Figure 1 The second guide rail 42 can be arranged at both ends of the sliding plate 1 along the second direction, which can improve the stability, smoothness and accuracy of the sliding plate 1.

[0040] The sliding plate 1 is driven by a first driving cylinder 51 to reciprocate along the first direction, and the piston rod of the first driving cylinder 51 is fixedly connected with the sliding plate 1. The piston rod of the first driving cylinder 51 is elongated or contracted, which can drive the sliding plate 1 to slide downward or upward along the first direction, so that the cam follower slides obliquely upward or obliquely downward along the corresponding sliding groove 11, and the connecting piece 31 and the first suction cup 32 are driven to move along the second direction, so that the pole piece distance increases or decreases.

[0041] Referring to Figure 3 and Figure 5The sliding plate 1 is provided with a buffer 6, which is adjustable in height along the first direction. The buffer 6 can control the distance of the sliding plate 1 moving along the first direction by setting the height. Before moving, the height of the buffer 6 is set according to the distance of the movement, and then the sliding plate 1 is driven to slide along the first direction by the first driving cylinder 51, so that the sliding plate 1 can stop after sliding a suitable distance, and the buffer 6 can be used to buffer when the sliding plate 1 slides to the predetermined position, so as to ensure the accurate and stable adjustment of the distance between the pole pieces. The buffer 6 can be arranged at the central axis of the sliding plate 1, or as shown in Figure 3 and Figure 5 two buffers 6 can be arranged at the two ends of the sliding plate 1 along the second direction, which can control the sliding distance and buffer. The buffer 6 can be fixed on the sliding plate 1 by a metal structure or the like.

[0042] It should be noted that the distance, inclination angle, length of the sliding groove 11, height of the buffer 6 and other parameters involved in the control system for controlling the actions of the distance changing device are set according to the actual working conditions, and the parameters corresponding to different working conditions are different, which are not limited here.

[0043] Embodiment 2

[0044] Referring to Figure 2 , the embodiment provides a material moving device, which comprises a material moving assembly 7 and the distance changing device of embodiment 1, and the distance changing device is installed on the material moving assembly 7 to drive the distance changing device to move between different stations through the material moving assembly 7.

[0045] Therefore, at least two sliding grooves 11 on the sliding plate 1 are arranged at different inclination angles compared with the first direction. When the sliding plate 1 slides along the first direction, the sliding piece 2 arranged in the sliding groove 11 can move along the sliding groove 11, thereby driving the material taking assembly 3 to move along the second direction, so as to increase or decrease the distance between the material taking assemblies 3, and then realize the increase or decrease of the distance between the pole pieces on the material taking assembly 3. The distance of the sliding plate 1 sliding along the first direction directly determines the distance of the sliding piece 2 sliding in the sliding groove 11, thereby determining the distance of the material taking assembly 3 moving along the second direction. After the sliding plate 1 slides a set distance, the material taking assembly 3 can stably move an adaptive distance, so that the distance between the material taking assemblies 3 meets the requirements, and then realizes the stable and high-precision adjustment of the distance between the pole pieces. In this way, after the distance between the pole pieces is adjusted by the distance changing device, the material can be accurately moved to the next station, so as to ensure the accuracy of the subsequent station operation.

[0046] The work station is provided with a material receiving assembly 8, the material moving assembly 7 drives the pitch changing device to place the pitch changed workpiece on the corresponding material receiving assembly 8, and the material moving device is provided with a detection device 9 to detect the workpiece on the material receiving assembly 8. The material receiving assembly 8 includes a second suction cup 81 for sucking the pole piece. When it is necessary to change the pitch of the pole piece, the pitch changing device is aligned with the material receiving assembly 8 of the previous work station, and the first suction cup 32 is aligned with the pole piece on the second suction cup 81, the second suction cup 81 is disconnected, and the first suction cup 32 is connected, so as to realize the suction of the first suction cup 32 to the pole piece. After the pitch changing device is changed, the material moving assembly 7 drives the pitch changing device to move to the next work station and aligns with the material receiving assembly 8 thereof, so that the first suction cup 32 corresponds to the second suction cup 81 thereof, the first suction cup 32 is disconnected, and the second suction cup 81 is connected, so as to realize the suction of the second suction cup 81 to the pole piece, so that the pole piece is smoothly moved to the next work station after the pitch changing.

[0047] The detection device 9 can be a visual sensor or the like for detecting whether the pitch, placement position and appearance of the pole piece are qualified.

[0048] In combination Figure 4 , the material moving assembly 7 includes a servo motor 71, a transmission mechanism 72 and a connecting frame 73, the output end of the servo motor 71 is connected to the transmission mechanism 72, the connecting frame 73 is connected to the transmission mechanism 72 to move linearly along the transmission mechanism 72, and the pitch changing device is installed on the connecting frame 73. The transmission mechanism 72 includes a lead screw, the connecting frame 73 is sleeved on the lead screw, and the servo motor 71 drives the lead screw to rotate to realize the linear motion of the connecting frame 73, thereby realizing the linear displacement of the pitch changing device and the movement of the pitch changing device between different work stations. The present embodiment is only described by way of example of linear motion, and of course, the pitch changing device can also rotate, and the structure of the material moving assembly 7 can be changed accordingly.

[0049] The pitch changing device is installed on the connecting frame 73 through a second driving cylinder 52, the second driving cylinder 52 is fixed on the connecting frame 73, and the piston rod of the second driving cylinder 52 is connected to the pitch changing device. The second driving cylinder 52 drives the pitch changing device downward to suck the pole piece, and then upward to change the pitch and move to the next work station.

[0050] The technical means disclosed in the present application is not limited to the technical means disclosed in the above embodiments, but also includes the technical solutions composed of any combination of the above technical features. It should be noted that, for ordinary skilled in the art, without departing from the principles of the present application, some improvements and refinements can also be made, which are also considered within the protection scope of the present application.

Claims

1. A variable pitch device, characterized by include: A sliding plate (1) is provided, which can slide back and forth along a first direction. At least two sliding grooves (11) are provided on the sliding plate (1) along the first direction. The at least two sliding grooves (11) are inclined and have different inclination angles. Sliding member (2), the number of the sliding member (2) is equal to the number of the sliding groove (11), and the sliding member (2) is slidably disposed in the corresponding sliding groove (11); The number of the material picking components (3) is equal to the number of the sliding components (2), and the material picking components (3) and the sliding components (2) are connected in a one-to-one correspondence. When the sliding component (2) slides, it drives the material picking components (3) to move along the second direction so that the distance between at least two material picking components (3) increases or decreases. The second direction is the arrangement direction of at least two material picking components (3), and the second direction is perpendicular to the first direction.

2. A variable pitch device according to claim 1, characterised in that: The material handling component (3) includes a connector (31) and a first suction cup (32), with the two ends of the connector (31) connected to the first suction cup (32) and the corresponding sliding component (2), respectively.

3. A variable pitch device according to claim 1 or 2, characterised in that: The material picking component (3) is connected to a first guide rail (41), which is arranged along the second direction. The material picking component (3) can reciprocate along the first guide rail (41) to increase or decrease the distance between at least two material picking components (3).

4. A variable pitch device according to claim 1 or 2, characterised in that: At least two of the corresponding ends of the slide grooves (11) are arranged along the second direction. The sliding member (2) is a cam follower. The material picking assembly (3) is connected to the corresponding cam follower. The sliding plate (1) reciprocates along the first direction, causing the cam follower to slide back and forth along the corresponding slide groove (11) and drive the corresponding material picking assembly (3) to move back and forth along the second direction, so that the distance between at least two material picking assemblies (3) increases or decreases.

5. A variable pitch device according to claim 1 or 2, characterised in that: The sliding plate (1) is slidably connected to a second guide rail (42), which is arranged along a first direction. The sliding plate (1) is provided with a groove (12) that is adapted to the second guide rail (42). The second guide rail (42) is located in the groove (12) so that the sliding plate (1) can slide back and forth along the second guide rail (42).

6. A variable pitch device according to claim 1 or 2, characterised in that: The sliding plate (1) is driven by a first driving cylinder (51) to slide back and forth in a first direction, and the piston rod of the first driving cylinder (51) is fixedly connected to the sliding plate (1).

7. A variable pitch device according to claim 1 or 2, characterised in that: The sliding plate (1) is equipped with a buffer (6), the height of which is adjustable along a first direction.

8. A material transfer device characterized by, include: The transfer assembly (7) and the pitch-changing device according to any one of claims 1-7, wherein the pitch-changing device is mounted on the transfer assembly (7) to drive the pitch-changing device to move between different workstations via the transfer assembly (7).

9. The material moving apparatus of claim 8, wherein: The material moving assembly (7) comprises a servo motor (71), a transmission mechanism (72) and a connecting frame (73), the output end of the servo motor (71) is connected with the transmission mechanism (72), the connecting frame (73) is connected with the transmission mechanism (72) to move linearly along the transmission mechanism (72), and the variable distance device is installed on the connecting frame (73).

10. The material moving apparatus of claim 9, wherein: The variable distance device is installed on the connecting frame (73) through a second driving cylinder (52), the second driving cylinder (52) is fixed on the connecting frame (73), and the piston rod of the second driving cylinder (52) is connected with the variable distance device.

11. The material moving apparatus of claim 8, wherein: A material receiving assembly (8) is arranged on the station, the material moving assembly (7) drives the variable distance device to move to place the workpiece after variable distance on the corresponding material receiving assembly (8), and the material moving device is provided with a detection device (9) to detect the workpiece on the material receiving assembly (8).

Images