Gathering type variable-pitch module and carrying operation device

Abstract

The utility model relates to the technical field of semiconductor chip testing, and particularly discloses a gathering type variable-pitch module and a carrying operation device. A plurality of belt pulley assemblies; the driving end of the driving unit is in transmission connection with all the belt and belt wheel assemblies, and the driving unit is used for driving all the variable-pitch sliding plates to synchronously slide towards the middle in a gathering mode through all the belt and belt wheel assemblies so that the distance between every two adjacent variable-pitch sliding plates can be shortened; or the driving device is used for driving the variable-pitch sliding plates to synchronously and dispersedly slide towards the two ends through the belt wheel assemblies, so that the distance between every two adjacent variable-pitch sliding plates is increased. According to the gathering type variable-pitch module and the carrying operation device provided by the utility model, variable-pitch transfer operation of batch chips can be realized, so that the production efficiency is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of semiconductor chip testing, especially relates to a gather formula variable distance module and handling operation device. BACKGROUND

[0002] In the semiconductor chip testing process, often appear the scene that need to take out the chip from small pitch carrier (the pitch size between adjacent two chip acupoints of carrier is smaller) and shift to the big pitch carrier (the pitch size between adjacent two chip acupoints of carrier is bigger).

[0003] The existing mechanical hand does not have the pitch change function, therefore, can only take out the chip in the small pitch carrier one by one, and then place in the big pitch carrier, cannot carry out the chip shift operation in batches, and the production efficiency is lower.

[0004] Therefore, a variable distance module needs to be developed for realizing the variable distance shift operation of batch chips, and then improving the production efficiency.

[0005] The above information disclosed in the background part is only included for enhancing the understanding of the background of the disclosure, and therefore can contain the information of prior art that is already known to the person skilled in the art. UTILITY MODEL CONTENT

[0006] One purpose of the utility model is to provide a gather formula variable distance module and handling operation device, which can realize the variable distance shift operation of batch chips, and then improve the production efficiency.

[0007] To achieve the above purpose, on one hand, the utility model provides a gather formula variable distance module, which comprises:

[0008] A plurality of variable distance sliding plates, each variable distance sliding plate is arranged in relative sliding along the horizontal direction;

[0009] A plurality of belt pulley assemblies, each belt pulley assembly is arranged in sequence from top to bottom along the vertical direction, and each belt pulley assembly is connected with one or two variable distance sliding plates;

[0010] A driving unit, the driving end of the driving unit is drivingly connected with each belt pulley assembly, for driving each variable distance sliding plate to slide to the middle synchronously through each belt pulley assembly to reduce the distance size between adjacent two variable distance sliding plates, or for driving each variable distance sliding plate to slide to both ends synchronously through each belt pulley assembly to increase the distance size between adjacent two variable distance sliding plates.

[0011] Optionally, the driving unit comprises a first rotating shaft arranged vertically, a second rotating shaft arranged in parallel with the first rotating shaft, and a rotating driving mechanism for driving the first rotating shaft to rotate.

[0012] Optionally, each group of the belt pulley assemblies comprises a first pulley arranged on the first rotating shaft, a second pulley arranged on the second rotating shaft, and a transmission belt for transmission connection between the first pulley and the corresponding second pulley.

[0013] The transmission belt comprises two straight belt sections with opposite movement directions, and each of the variable-distance sliding plates is fixed to one of the straight belt sections.

[0014] Optionally, one group of the belt pulley assemblies is a variable-diameter pulley assembly.

[0015] The diameter of the first pulley of the variable-diameter pulley assembly is smaller than the diameter of the second pulley of the variable-diameter pulley assembly.

[0016] The first pulley of the variable-diameter pulley assembly is synchronously connected with the first rotating shaft for rotation, and the second pulley of the variable-diameter pulley assembly is synchronously connected with the second rotating shaft for rotation.

[0017] Optionally, one group of the belt pulley assemblies is a low-speed pulley assembly.

[0018] The diameter of the first pulley of the low-speed pulley assembly is equal to the diameter of the second pulley of the low-speed pulley assembly.

[0019] The first pulley of the low-speed pulley assembly is relatively rotatably connected with the first rotating shaft through a bearing, and the second pulley of the variable-diameter pulley assembly is synchronously connected with the second rotating shaft for rotation.

[0020] Optionally, part of the belt pulley assemblies are constant-diameter pulley assemblies.

[0021] The diameters of the first pulley and the second pulley of the same constant-diameter pulley assembly are the same,

[0022] The first pulley of the constant-diameter pulley assembly is synchronously connected with the first rotating shaft for rotation, and the second pulley of the constant-diameter pulley assembly is relatively rotatably connected with the second rotating shaft through a bearing.

[0023] Optionally, the diameters of the first pulleys of different groups are sequentially reduced.

[0024] The diameter of the first pulley of the variable-diameter pulley assembly is smaller than the diameters of the first pulleys of the constant-diameter pulley assemblies.

[0025] The diameter size of the second belt pulley of the low-speed belt pulley assembly is smaller than the diameter size of the second belt pulley of the different-diameter belt pulley assembly.

[0026] Optionally, the number of the same-diameter belt pulley assemblies is two, including a large-diameter same-diameter belt pulley assembly and a small-diameter same-diameter belt pulley assembly.

[0027] The number of the variable-distance slides is eight, and the eight variable-distance slides include:

[0028] two small-diameter slides fixed on the small-diameter same-diameter belt pulley assembly,

[0029] one large-diameter slide fixed on the large-diameter same-diameter belt pulley assembly and located outside the two small-diameter slides,

[0030] two different-diameter slides fixed on the different-diameter belt pulley assembly and located between the two small-diameter slides,

[0031] two low-speed slides fixed on the low-speed belt pulley assembly and located between the two different-diameter slides, and

[0032] a fixed slide fixedly arranged and located between the two low-speed slides.

[0033] In another aspect, a carrying work device is provided, which includes any of the gathering variable-distance modules, and a taking mechanism is fixedly arranged on each variable-distance slide of the gathering variable-distance module.

[0034] The gathering variable-distance module and the carrying work device have the following beneficial effects: when it is necessary to take and pick up chips in a small-interval carrier, the driving unit drives each variable-distance slide to slide synchronously towards the middle through each belt pulley assembly, so that the distance between two adjacent variable-distance slides can be reduced, so that the taking mechanism on each variable-distance slide can take and pick up chips in the small-interval carrier.

[0035] When it is necessary to take and pick up chips in a large-interval carrier, the driving unit drives each variable-distance slide to slide synchronously towards both ends through each belt pulley assembly, so that the distance between two adjacent variable-distance slides can be increased, so that the taking mechanism on each variable-distance slide can take and pick up chips in the large-interval carrier.

[0036] Therefore, the gathering variable-distance module and the carrying work device can realize variable-distance transfer work of batch chips, and improve production efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0037] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0038] Figure 1 This is a schematic diagram of the structure of the convergent variable pitch module provided in the embodiment;

[0039] Figure 2 This is an internal schematic diagram of the convergent variable pitch module provided in the embodiment;

[0040] Figure 3 for Figure 2 An explosion diagram.

[0041] In the picture:

[0042] 1a. Small-diameter skateboard; 1b. Large-diameter skateboard; 1c. Skateboard with varying diameters; 1d. Low-speed skateboard; 1e. Fixed skateboard;

[0043] 2a. Large-diameter same-diameter pulley assembly; 2b. Small-diameter same-diameter pulley assembly; 2c. Different-diameter pulley assembly; 2d. Low-speed pulley assembly; 201. First pulley; 202. Second pulley; 203. Drive belt; 2031. Straight belt section;

[0044] 3. Drive unit; 301. First rotating shaft; 302. Second rotating shaft; 303. Rotary drive mechanism. Detailed Implementation

[0045] In this utility model, the reference to "embodiment" means that a specific feature, structure, or characteristic described in connection with an embodiment can be included in at least one embodiment of this utility model. The term "embodiment" appearing in various places throughout the specification does not necessarily refer to the same embodiment, nor does it specifically limit its independence or connection with other embodiments. In principle, in this utility model, as long as there are no technical contradictions or conflicts, the technical features mentioned in each embodiment can be combined in any way to form corresponding implementable technical solutions.

[0046] Unless otherwise defined, the technical terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains; the use of related terms herein is merely for the purpose of describing particular embodiments and is not intended to limit the invention.

[0047] In the description of this utility model, the term "and / or" is used to describe the logical relationship between objects, indicating that three relationships can exist. For example, A and / or B means: A exists, B exists, and A and B exist simultaneously. Additionally, the character " / " generally indicates that the preceding and following objects have an "or" logical relationship.

[0048] In this invention, terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any actual quantity, hierarchy, or order between these entities or operations.

[0049] Without further limitations, the use of terms such as “comprising,” “including,” “having,” or other similar expressions in this invention is intended to cover non-exclusive inclusion, which does not exclude the presence of additional elements in a process, method, or product that includes the stated elements, such that a process, method, or product that includes a series of elements may include not only those defined elements but also other elements not expressly listed, or elements inherent to such a process, method, or product.

[0050] Similar to the understanding in the Examination Guidelines, in this utility model, expressions such as "greater than," "less than," and "exceeding" are understood to exclude the stated number; expressions such as "above," "below," and "within" are understood to include the stated number. Furthermore, in the description of the embodiments of this utility model, "multiple" means two or more (including two), and similar expressions related to "multiple" are also understood in this way, such as "multiple groups" and "multiple times," unless otherwise explicitly specified.

[0051] In the description of the embodiments of this utility model, the space-related expressions used, such as "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "vertical," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential," indicate the orientation or positional relationship based on the orientation or positional relationship shown in the specific embodiments or drawings. They are only for the convenience of describing the specific embodiments of this utility model or for the reader's understanding, and do not indicate or imply that the device or component referred to must have a specific position, a specific orientation, or be constructed or operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this utility model.

[0052] Unless otherwise expressly specified or limited, the terms "installation," "connection," "linking," "fixing," and "setting," as used in the description of the embodiments of this utility model, should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral setting; it can be a mechanical connection, an electrical connection, or a communication connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be the internal connection of two components or the interaction between two components. For those skilled in the art to which this utility model pertains, the specific meaning of the above terms in the embodiments of this utility model can be understood according to the specific circumstances.

[0053] This utility model provides a convergent variable pitch module and a handling device, which is suitable for application scenarios of transferring chips with variable pitch. It can realize the variable pitch transfer of chips in batches, thereby improving production efficiency.

[0054] In this embodiment, the handling device includes a convergent variable-pitch module and several material handling mechanisms. Optionally, the material handling mechanisms are suction cups or grippers, etc.

[0055] See Figures 1-3 The convergent variable pitch module includes several variable pitch slides, several belt and pulley assemblies, and drive unit 3.

[0056] Each of the variable pitch slide plates is arranged to slide relative to each other in the horizontal direction, and a material picking mechanism is installed and fixed on each variable pitch slide plate;

[0057] Each of the belt and pulley assemblies is arranged vertically from top to bottom, and each belt and pulley assembly is connected to one or two variable pitch slides.

[0058] The drive end of the drive unit 3 is connected to each of the belt and pulley assemblies for transmission, and is used to drive each of the variable pitch slide plates to slide synchronously toward the middle through each of the belt and pulley assemblies, so as to reduce the distance between two adjacent variable pitch slide plates; or, it is used to drive each of the variable pitch slide plates to slide synchronously toward both ends through each of the belt and pulley assemblies, so as to increase the distance between two adjacent variable pitch slide plates.

[0059] The convergent variable pitch module and handling device provided in this embodiment can, when it is necessary to retrieve chips in a small-pitch carrier, drive unit 3 drives each variable pitch slide to converge and slide synchronously towards the center through each belt and pulley assembly, thereby reducing the distance between two adjacent variable pitch slides so that the actuators on each variable pitch slide can retrieve chips in the small-pitch carrier.

[0060] When it is necessary to retrieve a chip in a large-pitch vehicle, the drive unit 3 drives each of the variable-pitch slides to slide synchronously to both ends through each of the belt and pulley assemblies, thereby increasing the distance between two adjacent variable-pitch slides so that the actuators on each variable-pitch slide can retrieve the chip in the large-pitch vehicle.

[0061] Therefore, the convergent variable-pitch module and handling device provided by this utility model can realize the variable-pitch transfer operation of batch chips, thereby improving production efficiency.

[0062] In this embodiment, the driving unit 3 includes a vertically arranged first rotating shaft 301, a second rotating shaft 302 arranged parallel to the first rotating shaft 301, and a rotary driving mechanism 303 that drives the first rotating shaft 301 to rotate.

[0063] Each belt and pulley assembly includes a first pulley 201 sleeved on the first rotating shaft 301, a second pulley 202 sleeved on the second rotating shaft 302, and a transmission belt 203 that drives the first pulley 201 and the corresponding second pulley 202.

[0064] The transmission belt 203 includes two straight belt segments 2031 with opposite directions of movement, and each of the variable pitch slides is fixed to one of the straight belt segments 2031.

[0065] In this embodiment, some of the belt and pulley assemblies are pulley assemblies of the same diameter;

[0066] Among them, the first pulley 201 and the second pulley 202 belonging to the same group of pulley assemblies of the same diameter have the same diameter, and the diameters of the first pulleys 201 belonging to different groups decrease sequentially.

[0067] Furthermore, the first pulley 201 of the same diameter pulley assembly is synchronously rotatably connected to the first rotating shaft 301, and the second pulley 202 of the same diameter pulley assembly is rotatably connected to the second rotating shaft 302 via bearings.

[0068] In this embodiment, one of the belt and pulley assemblies is a differential diameter pulley assembly 2c;

[0069] The diameter of the first pulley 201 of the differential pulley assembly 2c is smaller than the diameter of the second pulley 202 of the differential pulley assembly 2c;

[0070] Furthermore, the first pulley 201 of the differential pulley assembly 2c is synchronously connected to the first rotating shaft 301, and the second pulley 202 of the differential pulley assembly 2c is synchronously connected to the second rotating shaft 302.

[0071] In this embodiment, one of the belt and pulley assemblies is a low-speed pulley assembly 2d;

[0072] The diameter of the first pulley 201 of the low-speed pulley assembly 2d is equal to the diameter of the second pulley 202 of the low-speed pulley assembly 2d;

[0073] Furthermore, the first pulley 201 of the low-speed pulley assembly 2d is rotatably connected to the first rotating shaft 301 via a bearing, and the second pulley 202 of the differential diameter pulley assembly 2c is synchronously rotatably connected to the second rotating shaft 302.

[0074] Optionally, the diameter of the first pulley 201 of the differential diameter pulley assembly 2c is smaller than the diameter of the first pulley 201 of each of the same diameter pulley assemblies;

[0075] The diameter of the second pulley 202 of the low-speed pulley assembly 2d is smaller than the diameter of the second pulley 202 of the differential diameter pulley assembly 2c.

[0076] Furthermore, the number of the same-diameter pulley assemblies is two sets, including a large-diameter same-diameter pulley assembly 2a with a larger pulley diameter and a small-diameter same-diameter pulley assembly 2b with a smaller pulley diameter;

[0077] The number of variable-pitch sliding plates is eight, and the eight variable-pitch sliding plates include:

[0078] Two small-diameter sliding plates 1a are fixed to the small-diameter same-diameter pulley assembly 2b.

[0079] A large-diameter slide 1b fixed to the large-diameter pulley assembly 2a and located outside the two small-diameter slides 1a,

[0080] Two different diameter sliding plates 1c fixed to the different diameter pulley assembly 2c and located between the two smaller diameter sliding plates 1a,

[0081] Two low-speed slide plates 1d fixed to the low-speed pulley assembly 2d and located between the two different diameter slide plates 1c, and

[0082] A fixed slide plate 1e is fixedly installed and located between the two low-speed slide plates 1d.

[0083] The working process of the convergent variable pitch module is described in detail below:

[0084] Initialization state: Before starting work, each pitch slide of the convergent pitch module is in a preset initial position, and they maintain a certain distance from each other in order to adapt to vehicles of different sizes.

[0085] Work process:

[0086] (1) Chip retrieval from small-pitch carrier: When chip retrieval operation is required in the small-pitch carrier, the drive unit 3 starts to work.

[0087] ① The drive unit 3 activates the rotary drive mechanism 303 to rotate in the forward direction, causing the first rotating shaft 301 to start rotating. Each first pulley 201, which is synchronously connected to the first rotating shaft 301, rotates synchronously. At this time, the larger the diameter of the first pulley 201, the faster the corresponding variable pitch slide plate slides.

[0088] Therefore, the large-diameter slide 1b is placed on the outermost side, the small-diameter slide 1a is placed on the inner side of the large-diameter slide 1b, and the different-diameter slide 1c is placed on the inner side of the small-diameter slide 1a.

[0089] ② The rotation of the first rotating shaft 301 is transmitted to the second rotating shaft 302 through the differential pulley assembly 2c. Since the diameter of the first pulley 201 of the differential pulley assembly 2c is smaller than that of the second pulley 202, the rotational speed of the second rotating shaft 302 is smaller than that of the first rotating shaft 301, thus achieving speed reduction. The reduced-speed second rotating shaft 302 serves as a power source to drive the low-speed pulley assembly 2d to rotate. The overall speed of the low-speed pulley assembly 2d is the slowest, so the low-speed slide plate 1d is set at the position closest to the fixed slide plate 1e.

[0090] Therefore, when the rotary drive mechanism 303 rotates in the forward direction, the various variable pitch slides converge around the fixed slide 1e, allowing the chip to be retrieved from the small-pitch carrier.

[0091] Conversely, when it is necessary to retrieve a chip in a large-pitch vehicle, the rotary drive mechanism 303 rotates in the opposite direction, and each variable-pitch slide moves away from each other with the fixed slide 1e as the center, thereby retrieving the chip from the large-pitch vehicle. The specific working principle is the same as the mutual convergence mentioned above, except that the direction of movement of the variable-pitch slide is opposite, so it will not be described in detail.

[0092] Through the above working process, the convergent variable pitch module can control the convergence or dispersion of the variable pitch slide plate through the drive unit 3 according to the spacing requirements of different vehicles, so as to realize flexible chip picking operation.

[0093] It should be noted that the diameter of the first pulley 201 of different belt pulley assemblies of the same diameter needs to decrease in order to achieve the variable speed convergence function. If all belt pulley assemblies are of the same diameter, the difference between the first pulley 201 of the highest speed belt pulley assembly and the lowest speed belt pulley assembly will be very large. This will result in the diameter of the first pulley 201 of the highest speed belt pulley assembly being extremely large, and the overall compactness of the convergence variable pitch module will be very low.

[0094] In this embodiment, the design of the differential diameter pulley assembly 2c in conjunction with the low-speed pulley assembly 2d eliminates the need for proportional changes in the first pulley 201 of the lowest-speed pulley assembly 2d and the highest-speed large-diameter same-diameter pulley assembly 2a. This greatly reduces the pulley diameter of the large-diameter same-diameter pulley assembly 2a, which is beneficial to improving the structural compactness of the convergent variable pitch module and the handling device.

[0095] In summary, the convergent variable pitch module and handling device provided in this embodiment have the following beneficial effects:

[0096] ① Flexibility: The drive unit 3 can control the convergence or dispersion of the variable pitch slide according to the spacing requirements of different vehicles, so as to realize flexible chip picking operation and is suitable for vehicles of different sizes.

[0097] ② High efficiency: The variable speed gathering function improves production efficiency and enables variable distance transfer of chips in batches.

[0098] ③ Compact structure: By combining the design of the differential diameter pulley assembly 2c with the low speed pulley assembly 2d, the pulley diameter of the large diameter same diameter pulley assembly 2a is reduced, which helps to improve the structural compactness of the convergent variable pitch module and the handling device.

[0099] It should be noted that the linear drive mechanism mentioned in this utility model can be a cylinder, hydraulic cylinder, electric cylinder, or motor lead screw linear module, etc., and the rotary drive mechanism mentioned can be a brushed motor, brushless motor, or rotary cylinder, etc. This utility model does not limit the specific structural form of the linear drive mechanism and the rotary drive mechanism.

[0100] Finally, it should be noted that although the above embodiments have been described in the text and drawings of this application, this should not limit the scope of patent protection of this application. Any technical solutions that are based on the essential concept of this application and utilize the content described in the text and drawings of this application, resulting in equivalent structural or procedural substitutions or modifications, as well as the direct or indirect application of the technical solutions of the above embodiments to other related technical fields, are all included within the scope of patent protection of this application.

Claims

1. A convergent variable pitch module, characterized in that, include: Several variable-pitch sliding plates are arranged to slide relative to each other in the horizontal direction; A plurality of belt and pulley assemblies are arranged in a vertical direction from top to bottom, and each belt and pulley assembly is connected to one or two variable pitch slides. The driving unit (3) is connected to each of the belt and pulley assemblies for driving each of the variable pitch slides to move synchronously toward the middle through each of the belt and pulley assemblies, so as to reduce the distance between two adjacent variable pitch slides; or, it is used to drive each of the variable pitch slides to move synchronously toward both ends through each of the belt and pulley assemblies, so as to increase the distance between two adjacent variable pitch slides.

2. The convergent variable pitch module according to claim 1, characterized in that, The drive unit (3) includes a vertically arranged first rotating shaft (301), a second rotating shaft (302) arranged parallel to the first rotating shaft (301), and a rotary drive mechanism (303) that drives the first rotating shaft (301) to rotate.

3. The convergent variable pitch module according to claim 2, characterized in that, Each of the belt and pulley assemblies includes a first pulley (201) sleeved on the first rotating shaft (301), a second pulley (202) sleeved on the second rotating shaft (302), and a transmission belt (203) that drives the first pulley (201) and the corresponding second pulley (202). The transmission belt (203) includes two straight belt segments (2031) with opposite directions of movement, and each of the variable pitch slides is fixed to one of the straight belt segments (2031).

4. The convergent variable pitch module according to claim 3, characterized in that, One of the belt and pulley assemblies is a differential diameter pulley assembly (2c); The diameter of the first pulley (201) of the differential pulley assembly (2c) is smaller than the diameter of the second pulley (202) of the differential pulley assembly (2c); Furthermore, the first pulley (201) of the differential pulley assembly (2c) is synchronously connected to the first rotating shaft (301), and the second pulley (202) of the differential pulley assembly (2c) is synchronously connected to the second rotating shaft (302).

5. The convergent variable pitch module according to claim 4, characterized in that, One of the belt and pulley assemblies is a low-speed pulley assembly (2d). The diameter of the first pulley (201) of the low-speed pulley assembly (2d) is equal to the diameter of the second pulley (202) of the low-speed pulley assembly (2d); Furthermore, the first pulley (201) of the low-speed pulley assembly (2d) is rotatably connected to the first rotating shaft (301) via a bearing, and the second pulley (202) of the differential diameter pulley assembly (2c) is rotatably connected to the second rotating shaft (302).

6. The convergent variable pitch module according to claim 5, characterized in that, Some of the belt and pulley assemblies are of the same diameter. Among them, the first pulley (201) and the second pulley (202) belonging to the same group of pulley assemblies of the same diameter have the same diameter. Furthermore, the first pulley (201) of the same diameter pulley assembly is synchronously rotatably connected to the first rotating shaft (301), and the second pulley (202) of the same diameter pulley assembly is rotatably connected to the second rotating shaft (302) via bearings.

7. The convergent variable pitch module according to claim 6, characterized in that, The diameters of the first pulleys (201) of different genera decrease sequentially.

8. The convergent variable pitch module according to claim 7, characterized in that, The diameter of the first pulley (201) of the differential diameter pulley assembly (2c) is smaller than the diameter of the first pulley (201) of each of the same diameter pulley assemblies; The diameter of the second pulley (202) of the low-speed pulley assembly (2d) is smaller than the diameter of the second pulley (202) of the differential pulley assembly (2c).

9. The convergent variable pitch module according to claim 8, characterized in that, The number of the same diameter pulley assemblies is two sets, including a large diameter same diameter pulley assembly (2a) with a larger pulley diameter and a small diameter same diameter pulley assembly (2b) with a smaller pulley diameter. The number of variable-pitch sliding plates is eight, and the eight variable-pitch sliding plates include: Two small-diameter sliding plates (1a) are fixed to the small-diameter same-diameter pulley assembly (2b). A large-diameter slide plate (1b) fixed to the large-diameter same-diameter pulley assembly (2a) and located outside the two small-diameter slide plates (1a). Two different diameter sliding plates (1c) fixed to the different diameter pulley assembly (2c) and located between the two smaller diameter sliding plates (1a) Two low-speed slide plates (1d) fixed to the low-speed pulley assembly (2d) and located between the two different diameter slide plates (1c), and A fixed slide (1e) is fixedly installed and located between the two low-speed slides (1d).

10. A handling device, characterized in that, The converging variable pitch module includes any one of claims 1-9, wherein each variable pitch slide of the converging variable pitch module is equipped with a material handling mechanism.

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