Gathering type variable-pitch module and carrying operation device

Abstract

The invention relates to the technical field of semiconductor chip testing, and particularly discloses a gathering type variable-pitch module and a carrying operation device, and the module comprises a plurality of variable-pitch sliding plates; 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 invention, variable-pitch transfer operation of batch chips can be realized, so that the production efficiency is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of semiconductor chip testing, and in particular to a convergent variable-distance module and a handling operation device. Background Art

[0002] During the semiconductor chip testing process, it is often necessary to take the chip out of a small-pitch carrier (a carrier with a smaller pitch between two adjacent chip holes) and transfer it to a large-pitch carrier (a carrier with a larger pitch between two adjacent chip holes).

[0003] Existing robots do not have the function of changing the pitch. Therefore, they can only take out the chips from the small-pitch carrier one by one and then place them in the large-pitch carrier. They cannot perform chip transfer operations in batches, and the production efficiency is low.

[0004] Therefore, it is necessary to develop a variable pitch module to realize the variable pitch transfer operation of batch chips, thereby improving production efficiency.

[0005] The above information disclosed in this Background section is included only for enhancement of understanding of the background of the present disclosure and therefore it may contain information that does not form the prior art that is currently known to a person of ordinary skill in the art. Summary of the invention

[0006] One object of the present invention is to provide a convergent variable pitch module and a handling operation device, which can realize the variable pitch transfer operation of batch chips, thereby improving production efficiency.

[0007] To achieve the above objectives, on the one hand, the present invention provides a converged variable pitch module, comprising:

[0008] A plurality of pitch-changing slide plates, each of which is arranged to slide relatively in a horizontal direction;

[0009] A plurality of belt pulley assemblies, each of which is arranged in sequence from top to bottom along the vertical direction, and each of which is correspondingly connected to one or two of the variable pitch slides;

[0010] A driving unit, wherein the driving end of the driving unit is transmission-connected to each of the belt and pulley assemblies, and is used to drive each of the variable pitch slides to synchronously slide together toward the middle through each of the belt and pulley assemblies, so as to reduce the distance between two adjacent variable pitch slides; or, is used to drive each of the variable pitch slides to synchronously slide toward both ends through each of the belt and pulley assemblies, so as to increase the distance between two adjacent variable pitch slides.

[0011] Optionally, the driving unit includes a first rotating shaft arranged vertically, a second rotating shaft arranged parallel to the first rotating shaft, and a rotation driving mechanism driving the first rotating shaft to rotate.

[0012] Optionally, each group of the belt and pulley assemblies includes a first pulley sleeved on the first rotating shaft, a second pulley sleeved on the second rotating shaft, and a transmission belt connecting the first pulley and the corresponding second pulley;

[0013] The transmission belt comprises two straight belt sections with opposite moving directions, and each of the variable pitch slide plates is fixed on one of the straight belt sections.

[0014] Optionally, one group of the belt pulley assemblies is a reducing pulley assembly;

[0015] The diameter of the first pulley of the different-diameter pulley assembly is smaller than the diameter of the second pulley of the different-diameter pulley assembly;

[0016] Furthermore, the first pulley of the different-diameter pulley assembly is connected to the first rotating shaft for synchronous rotation, and the second pulley of the different-diameter pulley assembly is connected to the second rotating shaft for synchronous rotation.

[0017] Optionally, one 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] Furthermore, the first pulley of the low-speed pulley assembly is connected to the first rotating shaft in relative rotation via a bearing, and the second pulley of the different-diameter pulley assembly is connected to the second rotating shaft in synchronous rotation.

[0020] Optionally, some of the belt and pulley assemblies are same-diameter pulley assemblies;

[0021] The first pulley and the second pulley belonging to the same group of pulley assemblies with the same diameter have the same diameter.

[0022] Furthermore, the first pulley of the same-diameter pulley assembly is connected to the first rotating shaft for synchronous rotation, and the second pulley of the same-diameter pulley assembly is connected to the second rotating shaft for relative rotation via a bearing.

[0023] Optionally, the diameters of the first pulleys in different groups decrease successively.

[0024] Optionally, the diameter of the first pulley of the different-diameter pulley assembly is smaller than the diameter of the first pulley of each of the same-diameter pulley assemblies;

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

[0026] Optionally, the number of the same-diameter pulley assemblies is two groups, including a large-diameter same-diameter pulley assembly with a larger pulley diameter and a small-diameter same-diameter pulley assembly with a smaller pulley diameter;

[0027] The number of the pitch-changing slide plates is eight, and the eight pitch-changing slide plates include:

[0028] Two small-diameter slide plates fixed on the small-diameter and same-diameter pulley assemblies,

[0029] a large-diameter slide fixed to the large-diameter and same-diameter pulley assembly and located outside the two small-diameter slides;

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

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

[0032] A fixed slide plate is fixedly arranged and located between the two low-speed slide plates.

[0033] On the other hand, a handling operation device is provided, comprising any of the above-mentioned converging type variable pitch modules, wherein a material picking mechanism is fixedly mounted on each variable pitch slide plate of the converging type variable pitch module.

[0034] The beneficial effects of the present invention are: providing a gathering type variable pitch module and a handling operation device, when it is necessary to take out a chip from a small pitch carrier, the driving unit drives each variable pitch slide plate to synchronously gather and slide toward the middle through each belt pulley assembly, thereby reducing the distance between two adjacent variable pitch slide plates, so that the actuator on each variable pitch slide plate can take out the chip from the small pitch carrier;

[0035] When it is necessary to pick up chips in a large-pitch carrier, the driving unit drives each of the variable-pitch slides to slide synchronously toward 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 of the variable-pitch slides can pick up chips in the large-pitch carrier.

[0036] Therefore, the convergent variable pitch module and the handling operation device provided by the present invention can realize the variable pitch transfer operation of batch chips, thereby improving production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0038] Figure 1 A schematic diagram of the structure of a converged variable pitch module provided in an embodiment;

[0039] Figure 2 An internal schematic diagram of a converged variable pitch module provided in an embodiment;

[0040] Figure 3 for Figure 2 Schematic diagram of the explosion.

[0041] In the figure:

[0042] 1a, small-diameter skateboard; 1b, large-diameter skateboard; 1c, different-diameter skateboard; 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, transmission belt; 2031, straight belt segment;

[0044] 3. Driving unit; 301. First rotating shaft; 302. Second rotating shaft; 303. Rotation driving mechanism. DETAILED DESCRIPTION

[0045] The reference to "embodiment" in the present invention means that the specific features, structures or characteristics described in conjunction with the embodiment may be included in at least one embodiment of the present invention. The word "embodiment" appearing in various places in the specification does not necessarily refer to the same embodiment, nor does it particularly limit its independence or association with other embodiments. In principle, in the present invention, as long as there is no technical contradiction or conflict, the various technical features mentioned in each embodiment can be combined in any way to form a corresponding implementable technical solution.

[0046] Unless otherwise defined, the technical terms used herein have the same meanings as those generally understood by those skilled in the art to which the present invention belongs; the use of relevant terms herein is only for describing specific embodiments and is not intended to limit the present invention.

[0047] In the description of the present invention, the term "and / or" is an expression used to describe the logical relationship between objects, indicating that three relationships may exist, for example, A and / or B, which means: A exists, B exists, and A and B exist at the same time. In addition, the character " / " in this article generally indicates that the objects before and after are in a logical relationship of "or".

[0048] In the present invention, terms such as "first" and "second" are merely used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship of quantity, priority or sequence between these entities or operations.

[0049] Without further restrictions, in the present invention, the words "include", "comprises", "has" or other similar expressions used in sentences are intended to cover non-exclusive inclusion. These expressions do not exclude the presence of additional elements in the process, method or product including the elements, so that the process, method or product including a series of elements may include not only those limited elements, but also other elements not explicitly listed, or also include elements inherent to such process, method or product.

[0050] Similar to the understanding in the Examination Guidelines, in the present invention, expressions such as "greater than", "less than", "exceed" and the like are understood to exclude the number itself; expressions such as "above", "below", "within" and the like are understood to include the number itself. In addition, in the description of the embodiments of the present invention, the meaning of "multiple" is more than two (including two), and similar expressions related to "multiple" are also understood in this way, such as "multiple groups", "multiple times", etc., unless otherwise clearly and specifically limited.

[0051] In the description of the embodiments of the present invention, the space-related expressions used, such as "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "vertical", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicate the orientation or position relationship based on the orientation or position relationship shown in the specific embodiments or drawings, and are only for the convenience of describing the specific embodiments of the present invention or facilitating the reader's understanding, and do not indicate or imply that the referred device or component must have a specific position, a specific orientation, or be constructed or operated in a specific orientation, and therefore cannot be understood as a limitation on the embodiments of the present invention.

[0052] Unless otherwise expressly specified or limited, in the description of the embodiments of the present invention, the terms such as "install", "connect", "connect", "fix", "set" and the like used should be understood in a broad sense. For example, the "connection" can be a fixed connection, a detachable connection, or an integrated 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 elements or the interaction relationship between two elements. For those skilled in the art of the technical field to which the present invention belongs, the specific meanings of the above terms in the embodiments of the present invention can be understood according to the specific circumstances.

[0053] The present invention provides a convergent variable pitch module and a handling operation device, which are suitable for application scenarios of variable pitch transfer operations on chips, and can realize variable pitch transfer operations of batch chips, thereby improving production efficiency.

[0054] In this embodiment, the handling operation device includes a convergent variable distance module and a plurality of material taking mechanisms. Optionally, the material taking mechanisms are suction cups or clamps.

[0055] See also Figure 1~Figure 3 The converging pitch-changing module includes a plurality of pitch-changing slide plates, a plurality of belt and pulley assemblies, and a driving unit 3.

[0056] Each of the variable pitch slide plates is relatively slidably arranged in the horizontal direction, and a material taking mechanism is fixedly installed on each variable pitch slide plate;

[0057] The belt pulley assemblies are arranged in sequence from top to bottom along the vertical direction, and each of the belt pulley assemblies is correspondingly connected to one or two variable pitch slide plates;

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

[0059] The converging variable pitch module and handling operation device provided in this embodiment, when it is necessary to take out a chip from a small pitch carrier, the driving unit 3 drives each variable pitch slide plate to slide synchronously toward the middle through each belt pulley assembly, thereby reducing the distance between two adjacent variable pitch slide plates, so that the actuator on each variable pitch slide plate can take out the chip from the small pitch carrier;

[0060] When it is necessary to pick up chips in a large-pitch carrier, the driving unit 3 drives each of the variable-pitch slides to slide synchronously toward 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 of the variable-pitch slides can pick up chips in the large-pitch carrier.

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

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

[0063] Each set of the 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 connecting the first pulley 201 and the corresponding second pulley 202;

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

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

[0066] The diameters of the first pulley 201 and the second pulley 202 that belong to the same group of pulley assemblies with the same diameter are the same, and the diameters of the first pulleys 201 that do not belong to the same group are decreased in sequence;

[0067] Furthermore, the first pulley 201 of the same-diameter pulley assembly is connected to the first rotating shaft 301 for synchronous rotation, and the second pulley 202 of the same-diameter pulley assembly is connected to the second rotating shaft 302 for relative rotation via a bearing.

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

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

[0070] Furthermore, the first pulley 201 of the different-diameter pulley assembly 2c is connected to the first rotating shaft 301 for synchronous rotation, and the second pulley 202 of the different-diameter pulley assembly 2c is connected to the second rotating shaft 302 for synchronous rotation.

[0071] In this embodiment, one of the belt 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 connected to the first rotating shaft 301 for relative rotation via a bearing, and the second pulley 202 of the different-diameter pulley assembly 2c is connected to the second rotating shaft 302 for synchronous rotation.

[0074] Optionally, the diameter of the first pulley 201 of the different-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 different-diameter pulley assembly 2c.

[0076] Furthermore, the number of the same-diameter pulley assemblies is two groups, 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 the pitch-changing slide plates is eight, and the eight pitch-changing slide plates include:

[0078] Two small-diameter slide plates 1a fixed on the small-diameter and same-diameter pulley assembly 2b,

[0079] A large-diameter slide plate 1b fixed on the large-diameter and same-diameter pulley assembly 2a and located outside the two small-diameter slide plates 1a,

[0080] Two different-diameter slide plates 1c fixed on the different-diameter pulley assembly 2c and located between the two small-diameter slide plates 1a,

[0081] Two low-speed slide plates 1d fixed on 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 arranged and located between the two low-speed slide plates 1d.

[0083] The working process of the converged variable pitch module is described in detail as follows:

[0084] Initialization state: Before starting work, the pitch-changing slides of the convergent pitch-changing module are in a preset initial position, and a certain distance is maintained between them to adapt to vehicles of different sizes.

[0085] Working process:

[0086] (1) Retrieving chips from a fine-pitch carrier: When it is necessary to retrieve chips from a fine-pitch carrier, the drive unit 3 starts working.

[0087] ① The driving unit 3 activates the rotation driving mechanism 303 to rotate forward, so that the first rotating shaft 301 starts to rotate. The first pulleys 201 connected to the first rotating shaft 301 rotate synchronously. At this time, the larger the diameter of the first pulley 201, the faster the sliding speed of the corresponding variable pitch slide plate;

[0088] Therefore, the large-diameter slide plate 1b is arranged at the outermost side, the small-diameter slide plate 1a is arranged at the inner side of the large-diameter slide plate 1b, and the different-diameter slide plate 1c is arranged at the inner side of the small-diameter slide plate 1a;

[0089] ② The rotation of the first rotating shaft 301 is transmitted to the second rotating shaft 302 through the different-diameter pulley assembly 2c, and since the diameter of the first pulley 201 of the different-diameter pulley assembly 2c is smaller than that of the second pulley 202, the rotation speed of the second rotating shaft 302 is smaller than that of the first rotating shaft 301, thereby achieving speed reduction processing. The second rotating shaft 302 after speed reduction acts 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 1d is set at the position closest to the fixed slide 1e.

[0090] Therefore, when the rotation driving mechanism 303 rotates in the forward direction, the variable pitch slides gather together with the fixed slide 1e as the center, so that the chip can be taken out from the small pitch carrier.

[0091] On the contrary, when it is necessary to take out the chip from the large-pitch carrier, the rotary drive mechanism 303 rotates in the opposite direction, and the variable-pitch slides will move away from each other with the fixed slide 1e as the center, and then take out the chip from the large-pitch carrier. The specific working principle is the same as the above-mentioned mutual gathering, except that the movement direction of the variable-pitch slides is opposite, so it will not be repeated.

[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 driving unit 3 according to the spacing requirements of different carriers, thereby realizing flexible chip picking operations.

[0093] It should be noted that the diameter sizes of the first pulleys 201 of the same-diameter pulley assemblies belonging to different groups need to be reduced in order to achieve the speed-changing and gathering function. If all the belt and pulley assemblies are same-diameter pulley assemblies, the difference between the first pulleys 201 of the highest-speed belt and pulley assembly and the lowest-speed belt and pulley assembly will be very large, which will cause the diameter size of the first pulley 201 of the highest-speed belt and pulley assembly to be extremely large, and the structural compactness of the entire gathering-type variable-pitch module is very low.

[0094] In this embodiment, the design of the different-diameter pulley assembly 2c is coordinated with the low-speed pulley assembly 2d, so that the first pulley 201 of the low-speed pulley assembly 2d with the lowest speed and the large-diameter same-diameter pulley assembly 2a with the highest speed do not need to be changed proportionally, thereby greatly reducing the pulley diameter size 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 operation device.

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

[0096] ① Flexibility: According to the spacing requirements of different carriers, the drive unit 3 can control the gathering or dispersion of the variable-pitch slide to achieve flexible chip picking operations, which is suitable for carriers of different sizes.

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

[0098] ③ Compact structure: Through the design of the different-diameter pulley assembly 2c and the low-speed pulley assembly 2d, the pulley diameter size of the large-diameter same-diameter pulley assembly 2a is reduced, which is beneficial to improving the structural compactness of the convergent variable-pitch module and the handling operation device.

[0099] It should be noted that the linear drive mechanism mentioned in the present invention may be a cylinder, a hydraulic cylinder, an electric cylinder or a motor screw linear module, etc., and the rotary drive mechanism mentioned may be a brushed motor, a brushless motor, or a rotary cylinder, etc. The present invention does not limit the specific structural forms 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 specification and drawings of this application, this does not limit the scope of patent protection of this application. All technical solutions generated by replacing or modifying equivalent structures or equivalent processes based on the essential concept of this application using the contents recorded in the specification and drawings of this application, as well as directly or indirectly implementing the technical solutions of the above embodiments in other related technical fields, are included in the scope of patent protection of this application.

Claims

1. A converged variable pitch module, characterized in that: include: A plurality of pitch-changing slide plates, each of which is arranged to slide relatively in a horizontal direction; A plurality of belt pulley assemblies, each of which is arranged in sequence from top to bottom along the vertical direction, and each of which is correspondingly connected to one or two of the variable pitch slides; A driving unit (3), wherein a driving end of the driving unit (3) is drivingly connected to each of the belt pulley assemblies, and is used to drive each of the variable pitch slides to slide together in a synchronous manner toward the middle through each of the belt pulley assemblies, so as to reduce the distance between two adjacent variable pitch slides; or, is used to drive each of the variable pitch slides to slide in a synchronous manner toward both ends through each of the belt pulley assemblies, so as to increase the distance between two adjacent variable pitch slides.

2. The converged variable pitch module according to claim 1, characterized in that: The driving unit (3) comprises a first rotating shaft (301) arranged vertically, a second rotating shaft (302) arranged parallel to the first rotating shaft (301), and a rotation driving mechanism (303) for driving the first rotating shaft (301) to rotate.

3. The converged variable pitch module according to claim 2, characterized in that: Each set of the belt and pulley assemblies comprises 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) for connecting the first pulley (201) and the corresponding second pulley (202); The transmission belt (203) comprises two straight belt segments (2031) with opposite movement directions, and each of the variable pitch slide plates is fixed on one of the straight belt segments (2031).

4. The converged variable pitch module according to claim 3, characterized in that: One group of the belt pulley assemblies is a different-diameter pulley assembly (2c); The diameter of the first pulley (201) of the different-diameter pulley assembly (2c) is smaller than the diameter of the second pulley (202) of the different-diameter pulley assembly (2c); Furthermore, the first pulley (201) of the different-diameter pulley assembly (2c) is connected to the first rotating shaft (301) for synchronous rotation, and the second pulley (202) of the different-diameter pulley assembly (2c) is connected to the second rotating shaft (302) for synchronous rotation.

5. The converged 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 size of the first pulley (201) of the low-speed pulley assembly (2d) is equal to the diameter size 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 connected to the first rotating shaft (301) in relative rotation via a bearing, and the second pulley (202) of the different-diameter pulley assembly (2c) is connected to the second rotating shaft (302) in synchronous rotation.

6. The converged variable pitch module according to claim 5, characterized in that: Some of the belt and pulley assemblies are same-diameter pulley assemblies; The first pulley (201) and the second pulley (202) belonging to the same group of pulley assemblies with the same diameter have the same diameter. Furthermore, the first pulley (201) of the same-diameter pulley assembly is connected to the first rotating shaft (301) in synchronous rotation, and the second pulley (202) of the same-diameter pulley assembly is connected to the second rotating shaft (302) in relative rotation via a bearing.

7. The converged variable pitch module according to claim 6, characterized in that: The diameters of the first pulleys (201) belonging to different groups decrease in sequence.

8. The converged variable pitch module according to claim 7, characterized in that: The diameter of the first pulley (201) of the different-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 reducing pulley assembly (2c).

9. The converged variable pitch module according to claim 8, characterized in that: The same-diameter pulley assemblies are in two groups, 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 the pitch-changing slide plates is eight, and the eight pitch-changing slide plates include: two small-diameter slide plates (1a) fixed on the small-diameter and same-diameter pulley assemblies (2b); a large-diameter slide plate (1b) fixed to the large-diameter and same-diameter pulley assembly (2a) and located outside the two small-diameter slide plates (1a); two different-diameter slide plates (1c) fixed on the different-diameter pulley assembly (2c) and located between the two small-diameter slide plates (1a); two low-speed slide plates (1d) fixed on the low-speed pulley assembly (2d) and located between the two different-diameter slide plates (1c), and A fixed slide plate (1e) is fixedly arranged and located between the two low-speed slide plates (1d).

10. A transport operation device, characterized in that: It comprises the converging type variable pitch module as described in any one of claims 1 to 9, and a material taking mechanism is fixedly mounted on each variable pitch slide of the converging type variable pitch module.

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