Variable-pitch positioning device

Abstract

The utility model discloses a variable-pitch positioning device, and relates to the technical field of battery stacking and packaging. The variable-pitch positioning device comprises a positioning conveying piece, a jacking mechanism and a variable-pitch mechanism, the positioning conveying piece is used for conveying products in the x-axis direction, and a gap area is formed on the conveying face of the positioning conveying piece. The jacking mechanism can ascend to penetrate out of the gap area so as to lift the product to be separated from the conveying face. The variable-pitch mechanism comprises a plurality of variable-pitch units arranged in the y-axis direction, each variable-pitch unit comprises a variable-pitch module and a clamping assembly, the clamping assemblies are used for clamping products, and the variable-pitch modules are used for driving the clamping assemblies to move in the y-axis direction so as to adjust the distance between every two adjacent products. The clamping assemblies of every two adjacent pitch changing units avoid each other in the y-axis direction. According to the device, the distance between products can be adjusted, and in the product clamping process, the adjacent clamping assemblies can avoid each other, so that a longer moving stroke is provided, the structure is convenient to compact, and equipment damage is avoided.

Description

Technical Field

[0001] The utility model generally relates to the technical field of battery stacking and packaging, and in particular to a variable distance positioning device. Background Art

[0002] With the rapid development of the new energy industry, the demand for lithium batteries is increasing. In the production process of lithium battery cells, the spacing between cells of different packaging materials is different. Therefore, when transferring and storing the cells, the cells need to be positioned and the spacing between the cells needs to be adjusted. At present, the spacing between the cells is usually adjusted by clamping claws, which requires a large equipment space and has low overall operating efficiency. In addition, some variable distance mechanisms are prone to cause blue film or cell surface loss when performing variable distance positioning operations, reducing product yield.

[0003] It should be noted that the information disclosed in the above background technology section is only used to enhance the understanding of the background of the present disclosure, and therefore may include information that does not constitute the prior art known to ordinary technicians in the field. Utility Model Content

[0004] A series of simplified concepts are introduced in the utility model content section, which will be further described in detail in the detailed implementation section. The utility model content section does not mean to attempt to define the key features and essential technical features of the technical solution claimed for protection, nor does it mean to attempt to determine the scope of protection of the technical solution claimed for protection.

[0005] The purpose of the utility model is to overcome at least one defect of the above-mentioned prior art and provide a variable distance positioning device.

[0006] In order to achieve the above utility model purpose, the utility model adopts the following technical solutions:

[0007] A variable distance positioning device, comprising:

[0008] A positioning conveying member, used for conveying products along the x-axis direction, having a conveying surface, and a gap area formed on the conveying surface;

[0009] A lifting mechanism is disposed below the conveying surface, and the lifting mechanism can rise and pass through the gap area to lift the product to be separated from the conveying surface; and

[0010] The variable distance mechanism comprises a plurality of variable distance units arranged along the y-axis direction, each of the variable distance units comprises a variable distance module and a clamping assembly, the clamping assembly is used for clamping the product, the variable distance module is used for driving the clamping assembly to move along the y-axis direction to adjust the distance between two adjacent products, wherein the clamping assemblies of two adjacent variable distance units avoid each other in the y-axis direction.

[0011] According to one embodiment of the utility model, the clamping assembly includes a pair of clamping plates and a clamping driving member, the pair of clamping plates are used to clamp the product, and the clamping driving member is used to drive the pair of clamping plates to move closer to or away from each other along the y-axis direction. One of the clamping plates of two adjacent clamping assemblies is provided with an avoidance portion to allow the clamping plate of the other clamping assembly to pass through.

[0012] According to an embodiment of the present utility model, the clamping plate includes a crossbar portion and a vertical bar portion connected below the crossbar portion, the crossbar portion extends along the x-axis direction and is in a T-shape or an inverted L-shape with the vertical bar portion.

[0013] According to an embodiment of the present utility model, the cross bar portion is arranged above the conveying surface, and the vertical bar portion passes through the gap area and is connected to the clamping drive member.

[0014] According to one embodiment of the utility model, the lifting mechanism includes a lifting plate, a lifting drive and multiple lifting platforms, the lifting drive is used to drive the lifting plate to rise and fall, and is configured as a lifting cylinder and / or a spiral synchronous lifter; the lifting platform is installed on the lifting plate, and the lifting plate rises to drive the lifting platform to pass through the gap area and contact the product.

[0015] According to an embodiment of the present utility model, the variable pitch unit is installed on the lifting plate, and each of the lifting platforms is correspondingly arranged on a variable pitch unit.

[0016] According to one embodiment of the utility model, it also includes a feed conveyor, which is used to input the product into the positioning conveyor. A plurality of feed guides arranged at intervals are installed on the feed conveyor, and a channel for product transportation is formed between two of the feed guides.

[0017] According to one embodiment of the utility model, a barcode scanner and a translation mechanism are installed above the feed conveyor, and the translation mechanism includes a translation drive member, a slide rail and a sliding member slidably connected to the slide rail, the slide rail extends along the y-axis direction, the barcode scanner is fixed to the sliding member, and the translation drive member is used to drive the sliding member to slide along the slide rail.

[0018] According to one embodiment of the present invention, an alignment mechanism is further included. The alignment mechanism is arranged on the conveying path of the positioning conveyor and is used to position the front side of the product.

[0019] According to an embodiment of the present utility model, the alignment mechanism includes a baffle and a baffle driving member, and a driving end of the baffle driving member is connected to the baffle for driving the baffle to move along the x-axis direction.

[0020] According to one embodiment of the utility model, the positioning conveying member includes a plurality of rollers arranged at intervals, the surfaces of the plurality of rollers constitute the conveying surface, and the gap between two adjacent rollers constitutes the gap area.

[0021] It can be seen from the above technical solution that the advantages and positive effects of the variable distance positioning device of the utility model are:

[0022] The variable distance positioning device provided by the embodiment of the utility model has a compact structure and a reasonable layout. The lifting mechanism can pass through the gap area of ​​the positioning conveyor and lift the product to separate from the conveyor. The clamping and positioning of the product is achieved by the clamping assembly, and then the variable distance operation is performed on the product and the clamping assembly at the same time by the variable distance module, and the variable distance positioning is efficient. In addition, since the two adjacent clamping assemblies can avoid each other when moving, there will be no movement interference, which effectively extends the movement stroke, making the structure of the equipment more compact, reducing the occupied space, and can effectively avoid product or equipment damage caused by collision interference. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The various objects, features and advantages of the present invention will become more apparent by considering the following detailed description of the preferred embodiments of the present invention in conjunction with the accompanying drawings. The accompanying drawings are only exemplary illustrations of the present invention and are not necessarily drawn to scale. In the accompanying drawings, the same reference numerals always represent the same or similar parts. Among them:

[0024] Figure 1 It is a schematic diagram of the structure of the variable distance positioning device provided in an embodiment of the present disclosure.

[0025] Figure 2 yes Figure 1 A schematic structural diagram of the variable distance positioning device in another perspective.

[0026] Figure 3 yes Figure 1 A partial enlarged view of point I in the middle.

[0027] Figure 4 yes Figure 1 Schematic diagram of the structure of the positioning conveyor.

[0028] Figure 5 yes Figure 1 Schematic diagram of the structure of the lifting drive component.

[0029] Figure 6 yes Figure 1 Schematic diagram of the structure of the medium pitch mechanism (with battery cell).

[0030] Figure 7 yes Figure 1 Schematic diagram of the structure of the medium pitch mechanism (without battery cells).

[0031] Figure 8 It is a structural schematic diagram of the variable pitch mechanism in 7 from another perspective.

[0032] Fig. 9 yes Figure 1 Schematic diagram of the structure of the barcode scanner and translation mechanism.

[0033] Icons: 100-positioning conveyor; 101-gap area; 110-frame; 120-drive motor; 130-roller; 200-alignment mechanism; 210-baffle; 211-slider; 212-slide rail; 220-baffle driver; 300-lifting mechanism; 310-lifting plate; 320-lifting driver; 321-lifting cylinder; 322-spiral synchronous lifter; 323-screw lifting assembly; 324-worm gear box; 325-worm; 330-lifting platform; 331-fixed block; 332-lifting block; 400- Pitch-changing mechanism; 410-pitch-changing unit; 420-pitch-changing module; 421-sliding table; 422-sliding block; 430-clamping assembly; 43a-first clamping plate structure; 43b-second clamping plate structure; 431-clamping plate; 432-clamping drive member; 433-avoidance part; 434-cross bar part; 435-vertical bar part; 500-feeding conveying member; 510-feeding guide member; 520-bar scanner; 530-translation mechanism; 531-translation drive member; 532-slide rail; 533-sliding member; 534-mounting rod; 600-battery cell. DETAILED DESCRIPTION

[0034] Example embodiments will now be described more fully with reference to the accompanying drawings. However, example embodiments can be implemented in a variety of forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that the present invention will be comprehensive and complete and fully convey the concepts of the example embodiments to those skilled in the art. The same reference numerals in the figures represent the same or similar structures, and thus their detailed description will be omitted.

[0035] The described features, structures or characteristics may be combined in one or more embodiments in any suitable manner. In the following description, many specific details are provided to provide a full understanding of the embodiments of the present invention. However, those skilled in the art will appreciate that the technical solution of the present invention may be practiced without one or more of the specific details, or other methods, components, materials, etc. may be used. In other cases, known structures, materials or operations are not shown or described in detail to avoid blurring the various aspects of the present invention.

[0036] In the following description, a large number of specific details are given to provide a more thorough understanding of the utility model. However, it is obvious to those skilled in the art that the utility model can be implemented without one or more of these details. In other examples, in order to avoid confusion with the utility model, some technical features known in the art are not described.

[0037] Example

[0038] See also Figure 1 and Figure 2 , schematically shows a structural diagram of a variable distance positioning device, which includes a positioning conveying member 100, an alignment mechanism 200, a lifting mechanism 300, a variable distance mechanism 400 and a feed conveying member 500.

[0039] The feeding conveyor 500 is used to input the product into the positioning conveyor 100. The positioning conveyor 100 is used to convey the product along the x-axis direction and has a conveying surface, on which a gap area 101 is formed. The alignment mechanism 200 is arranged on the conveying path of the positioning conveyor 100 and is used to realign and position the product. The lifting mechanism 300 is arranged below the conveying surface and can rise through the gap area 101 of the conveying surface to lift the product to be separated from the conveying surface. The pitch mechanism 400 includes a plurality of pitch units 410 arranged along the y-axis direction, each pitch unit 410 includes a pitch module 420 and a clamping assembly 430, the clamping assembly 430 is used to clamp the product, and the pitch module 420 is used to drive the clamping assembly 430 to move along the y-axis direction to adjust the distance between two adjacent products. Among them, the x-axis direction and the y-axis direction are perpendicular to each other. In this embodiment, the battery cell 600 is used as a product to illustrate the pitch positioning.

[0040] Specifically, in one embodiment, the feed conveyor 500 is configured as a belt conveyor mechanism, and a plurality of battery cells 600 are placed on the conveyor belt of the feed conveyor 500, and the products are conveyed to the positioning conveyor 100 along the x-axis direction. It should be noted that in other embodiments, the feed conveyor 500 may also be configured as a roller conveyor mechanism, etc., and the present disclosure does not impose specific limitations.

[0041] Furthermore, a plurality of feed guides 510 are installed on the feed conveyor 500 at intervals, and the feed guides 510 extend along the x-axis direction, and a channel for product transportation is formed between two feed guides 510. The battery cells 600 are transported forward in sequence along the channel to the positioning conveyor 100. Specifically, the feed guide 510 is roughly arranged in the middle of the battery cell 600 to better guide the product. The feed guide 510 may include a drawstring line and a guide roller arranged on the drawstring line, and both sides of the battery cell 600 are in contact with the guide roller to ensure the stability of the transportation and avoid adverse consequences such as product rollover.

[0042] In one embodiment, the positioning conveyor 100 is arranged at the output end of the feeding conveyor, and includes a frame 110, a driving motor 120 mounted on the frame 110, and a plurality of rollers 130 arranged at intervals. The driving motor 120 is connected to the plurality of rollers 130 through a transmission mechanism to drive the rollers 130 to convey the battery cells 600 along the x-axis direction. The transmission mechanism can be, for example, a synchronous belt transmission mechanism. The surfaces of the plurality of rollers 130 constitute a conveying surface, and the gap between two adjacent rollers 130 constitutes a gap area 101.

[0043] See also Figure 3 An alignment mechanism 200 is provided at one end of the positioning conveyor 100 away from the feeding conveyor 500. The alignment mechanism 200 is used to position the front side surfaces of the plurality of battery cells 600 and prevent the battery cells 600 from continuing to move forward.

[0044] In one embodiment, the alignment mechanism 200 includes a baffle 210 and a baffle driver 220, wherein the driving end of the baffle driver 220 is connected to the baffle 210 and is used to drive the baffle 210 to move along the x-axis direction. Specifically, the baffle 210 is connected with sliders 211 on both sides along the y-axis, and the sliders 211 are slidably connected to the slide rails 212, which are fixed to the frame 110 and extend along the x-axis direction. The baffle driver 220 can be, for example, a driving cylinder, wherein the output end of the driving cylinder is connected to the baffle 210 or the slider 211, and drives the baffle 210 to move along the slide rails 212. For example, in actual operation, the driving cylinder drives the baffle 210 to move along the x-axis toward the battery cell 600, so that the baffle 210 slightly pushes the battery cell 600 in the opposite direction and contacts the front side of the battery cell 600, thereby ensuring that multiple battery cells 600 in the same row are uniformly positioned and aligned with the front side of the battery cell.

[0045] See also Figure 4 In one embodiment, the lifting mechanism 300 and the pitch changing mechanism 400 are both mounted on the frame 110, and the pitch changing mechanism 400 is mounted on the lifting mechanism 300. The lifting mechanism 300 drives the pitch changing mechanism 400 to move in the vertical direction.

[0046] See also Figure 5 and Figure 6, the lifting mechanism 300 includes a lifting plate 310, a lifting drive 320 and a plurality of lifting platforms 330. The lifting drive 320 is used to drive the lifting plate 310 to rise and fall, thereby driving the lifting platform to pass through the gap area 101 and contact the battery cell 600. Among them, the lifting drive 320 can be configured as a lifting cylinder and / or a spiral synchronous lifter. In one embodiment, the lifting drive 320 includes a lifting cylinder 321 and a spiral synchronous lifter 322. The movable ends of the lifting cylinder 321 and the spiral synchronous lifter 322 are connected to the lifting plate 310 to drive the lifting plate 310 to rise and fall.

[0047] Specifically, the spiral synchronous lifter 322 includes a screw lifting assembly 323, a worm gear housing 324 and a worm 325, and the worm gear housing 324 is respectively connected to the screw lifting assembly 323 and the worm 325, and the worm 325 rotates, and is transmitted to the screw lifting assembly 323 via the worm gear in the worm gear housing 324, thereby driving the screw lifting assembly 323 to be lifted. The worm 325 can be connected to the output shaft of the drive motor (not shown), and the drive motor drives the worm 325 to rotate. Further, in one embodiment, the spiral synchronous lifter 322 is provided with at least four groups, and the four groups of spiral synchronous lifters 322 are connected to each other through the worm 325 and the worm gear housing 324 to achieve synchronous transmission. The lifting cylinder 321 is arranged in the space enclosed by the four groups of spiral synchronous lifters 322. The lifting cylinder 321 can be configured as one or more, and the present disclosure does not specifically limit it.

[0048] It is understandable that, in other embodiments, the specific number of the spiral synchronous lifters 322 can be set according to actual use needs, and the present disclosure does not specifically limit it.

[0049] See also Figure 7 and Figure 8 , further, in one embodiment, the variable pitch unit 410 is installed on the lifting plate 310 and moves with the lifting plate 310. The multiple lifting platforms 330 of the lifting mechanism 300 are respectively arranged on the multiple variable pitch units 410, and move synchronously with the variable pitch units 410. Specifically, each lifting platform 330 is correspondingly arranged on one of the variable pitch units 410. The lifting platform 330 includes a fixed block 331 and a plurality of lifting blocks 332 connected to the top of the fixed block 331, and the plurality of lifting blocks 332 are arranged at intervals along the x-axis direction. The gap between two adjacent lifting blocks 332 is greater than the diameter of the roller 130. When the lifting plate 310 rises, the lifting block 332 can pass through the gap area 101 between adjacent rollers 130 and contact the battery cell 600 to lift the battery cell 600 to separate from the roller 130.

[0050] Furthermore, in one embodiment, the pitch-changing module 420 is installed on the lifting plate 310, and includes a sliding platform 421 extending along the y-axis direction, a plurality of sliding blocks 422 slidably connected to the sliding platform 421, and a pitch-changing driving member. The pitch-changing driving member drives the sliding blocks 422 to slide, so as to change the spacing between two adjacent sliding blocks 422, thereby realizing the pitch-changing effect. For example, the sliding blocks 422 can be connected in pairs by connecting members such as synchronous belts, springs, or sliding plates, and one of the sliding blocks 422 can be driven to move by a driving cylinder, thereby realizing the equidistant pitch-changing of the plurality of sliding blocks 422 synchronously.

[0051] It is understandable that in other embodiments, the pitch changing module 420 may also adopt the existing cam pitch changing sliding table pitch changing structure, the scissors-type pitch changing structure, or use a ball screw slide to position the spacing of the slider to achieve pitch changing, etc. Technical personnel in this field may select the corresponding pitch changing structure according to actual needs.

[0052] Furthermore, in one embodiment, the clamping assembly 430 is mounted on the sliding block 422 of the pitch-changing module 420. The clamping assemblies 430 of two adjacent pitch-changing units 410 avoid each other in the y-axis direction.

[0053] Specifically, the clamping assembly 430 includes a pair of clamping plates 431 and a clamping driving member 432. The pair of clamping plates 431 are respectively arranged on both sides of the battery cell 600 along the y-axis direction to clamp the product. The clamping driving member 432 is used to drive the pair of clamping plates 431 to move closer to or farther away from each other along the y-axis direction. When the clamping plates 431 on both sides move closer to each other, the battery cell 600 is clamped, and when they move away from each other, the battery cell 600 is released. The clamping driving member 432 can be, for example, a driving cylinder.

[0054] Furthermore, in one embodiment, the clamping drive member 432 and the fixed block 331 are both fixed on the sliding block 422. An installation space is provided below the fixed block 331, and the clamping drive member 432 is arranged in the installation space. A pair of clamping plates 431 are respectively arranged on both sides of the fixed block 331, and the lifting block 332 is arranged between the clamping plates 431 on both sides. Through the above layout, the equipment structure is compact, which can effectively save space, and the lifting platform 330 moves synchronously with the variable pitch module 420, and can synchronously lift and clamp the battery cell 600, which is easy to operate.

[0055] Further, in one embodiment, the clamping plate 431 of one of the two adjacent clamping assemblies 430 is provided with an avoidance portion to allow the clamping plate 431 of the other clamping assembly 430 to pass through. Specifically, the clamping plates 431 of the two adjacent clamping assemblies 430 are respectively a first clamping plate structure 43a and a second clamping plate structure 43b, and the first clamping plate structure 43a is provided with an avoidance portion 433 that allows the second clamping plate structure 43b to pass through. In the plurality of clamping assemblies 430, the first clamping plate structure 43a and the second clamping plate structure 43b are alternately arranged.

[0056] Through the above arrangement, the first clamping plate structure 43a and the second clamping plate structure 43b can move along the y-axis without interfering with each other, effectively extending the movement stroke, making the device structure more compact, occupying less space, and effectively avoiding device damage caused by collision interference.

[0057] Further, in one embodiment, the clamping plate 431 includes a crossbar portion 434 and a vertical bar portion 435 connected to the bottom of the crossbar portion 434. The crossbar portion 434 extends along the x-axis direction and is arranged above the roller 130. One end of the vertical bar portion 435 is connected to the clamping drive member 432 below the roller 130, and the other end passes through the gap area 101 to connect with the crossbar portion 434. Further, the crossbar portion 434 and the vertical bar portion 435 are T-shaped or inverted L-shaped. For example, the first clamping plate structure 43a is inverted L-shaped, the second clamping plate structure 43b is T-shaped, and the vertical bar height of the first clamping plate structure 43a is greater than the overall height of the second clamping plate structure 43b to allow the second clamping plate structure 43b to pass through.

[0058] It should be noted that, in other embodiments, the first clamping plate structure 43a and the second clamping plate structure 43b may also be in other shapes, as long as they can avoid each other in the y-axis direction.

[0059] See also Fig. 9 Furthermore, in one embodiment, a barcode scanner 520 and a translation mechanism 530 are installed above the feed conveyor 500. The barcode scanner 520 is used to scan and identify the battery cell 600. The translation mechanism 530 includes a translation driving member 531, a slide rail 532, and a sliding member 533 slidably connected to the slide rail 532, the slide rail 532 extends along the y-axis direction, the barcode scanner 520 is fixed to the sliding member 533, and the translation driving member 531 is used to drive the sliding member 533 to slide along the slide rail 532.

[0060] Furthermore, in one embodiment, the sliding member 533 is fixedly connected to a mounting rod 534, and a plurality of barcode scanners 520 are arranged on the mounting rod 534. The barcode scanners 520 are slidably connected to the mounting rod 534 to adjust the distance between two adjacent barcode scanners 520. The movement of the sliding member 533 drives the plurality of barcode scanners 520 to move synchronously.

[0061] The working process of the variable distance positioning device of this embodiment is as follows:

[0062] The battery cell 600 is fed from the feeding conveyor 500, and the feeding conveyor 500 drives the battery cell 600 to move forward along the x-axis. After a whole set of feeding is completed, the barcode is scanned by the barcode scanner 520 above. After the barcode is scanned, it enters the positioning conveyor 100. After the positioning conveyor 100 is transported to the right position, the driving motor 120 stops moving. The baffle driving member 220 drives the baffle 210 to move toward the direction of the battery cell 600, so that the front side surfaces of multiple battery cells 600 are positioned and aligned. The lifting driving member 320 drives the lifting plate 310 to rise, driving the lifting platform 330 to pass through the gap 101 of the roller 130, and lifting the battery cell 600 to detach from the roller 130. The clamping driving member 432 drives the clamping plates 431 on both sides to clamp the battery cell 600, and at the same time positions the left and right positions of the product. The pitch changing module 420 moves, driving the clamping assembly 430 and the battery cell 600 to change the pitch together, and the pitch changing positioning is completed.

[0063] It should be understood that the multiple examples described above can be used in multiple directions (such as tilted, inverted, horizontal, vertical, etc.) and in multiple configurations without departing from the principles of the present invention. The embodiments shown in the accompanying drawings are shown and described only as examples of effective applications of the principles of the present invention, and the present invention is not limited to any specific details of these embodiments.

[0064] Of course, once the above description of the representative embodiments is carefully considered, it will be readily understood by those skilled in the art that various modifications, additions, substitutions, deletions and other changes may be made to these specific embodiments, and these changes are within the scope of the principles of the present utility model. Therefore, the foregoing detailed description should be clearly understood to be given only in an illustrative and exemplary manner, and the spirit and scope of the present utility model are limited only by the appended claims and their equivalents.

Claims

1. A variable distance positioning device, characterized in that: include: A positioning conveying member, used for conveying products along the x-axis direction, having a conveying surface, and a gap area formed on the conveying surface; A lifting mechanism is disposed below the conveying surface, and the lifting mechanism can rise and pass through the gap area to lift the product to be separated from the conveying surface; as well as The variable distance mechanism comprises a plurality of variable distance units arranged along the y-axis direction, each of the variable distance units comprises a variable distance module and a clamping assembly, the clamping assembly is used for clamping the product, the variable distance module is used for driving the clamping assembly to move along the y-axis direction to adjust the distance between two adjacent products, wherein the clamping assemblies of two adjacent variable distance units avoid each other in the y-axis direction.

2. The variable distance positioning device according to claim 1, characterized in that: The clamping assembly includes a pair of clamping plates and a clamping driving member, wherein the pair of clamping plates are used to clamp the product, and the clamping driving member is used to drive the pair of clamping plates to move closer to or away from each other along the y-axis direction. The clamping plates of one of the two adjacent clamping assemblies are provided with an avoidance portion to allow the clamping plate of the other clamping assembly to pass through.

3. The variable distance positioning device according to claim 2, characterized in that: The clamping plate includes a cross bar portion and a vertical bar portion connected to the bottom of the cross bar portion, the cross bar portion extends along the x-axis direction and is T-shaped or inverted L-shaped with the vertical bar portion; the cross bar portion is arranged above the conveying surface, and the vertical bar portion passes through the gap area and is connected to the clamping drive member.

4. The variable distance positioning device according to claim 1, characterized in that: The lifting mechanism includes a lifting plate, a lifting drive and multiple lifting platforms. The lifting drive is used to drive the lifting plate to rise and fall, and is configured as a lifting cylinder and / or a spiral synchronous lifter; the lifting platform is installed on the lifting plate, and the lifting plate rises to drive the lifting platform to pass through the gap area and contact the product.

5. The variable distance positioning device according to claim 4, characterized in that: The variable pitch unit is installed on the lifting plate, and each of the lifting platforms is correspondingly arranged on a variable pitch unit.

6. The variable distance positioning device according to claim 1, characterized in that: It also includes a feed conveyor, which is used to input the product into the positioning conveyor. A plurality of feed guides arranged at intervals are installed on the feed conveyor, and a channel for product transportation is formed between two of the feed guides.

7. The variable distance positioning device according to claim 6, characterized in that: A barcode scanner and a translation mechanism are installed above the feed conveyor, and the translation mechanism includes a translation drive, a slide rail, and a sliding member slidably connected to the slide rail. The slide rail extends along the y-axis direction, the barcode scanner is fixed to the sliding member, and the translation drive is used to drive the sliding member to slide along the slide rail.

8. The variable distance positioning device according to claim 1, characterized in that: It also includes an alignment mechanism, which is arranged on the conveying path of the positioning conveyor and is used to position the front side of the product.

9. The variable distance positioning device according to claim 8, characterized in that: The alignment mechanism comprises a baffle and a baffle driving member, wherein a driving end of the baffle driving member is connected to the baffle and is used to drive the baffle to move along the x-axis direction.

10. The variable distance positioning device according to claim 1, characterized in that: The positioning conveying member comprises a plurality of rollers arranged at intervals, the surfaces of the plurality of rollers constitute the conveying surface, and the gap between two adjacent rollers constitutes the gap area.

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