A variable pitch pick-up mechanism

Abstract

The utility model discloses a variable distance material taking mechanism, including the mounting panel, be equipped with the rotary lever on the mounting panel, the rotary lever transmission has the drive motor, the drive motor drives the rotary lever rotation, the mounting panel middle part is equipped with the central material taking subassembly, the rotary lever one end is equipped with a plurality of first material taking subassembly, and the other end is equipped with a plurality of second material taking subassembly, the central material taking subassembly is between a plurality of first material taking subassembly and a plurality of second material taking subassembly, first material taking subassembly and second material taking subassembly all with rotary lever transmission is connected, first material taking subassembly and second material taking subassembly follow the rotation of rotary lever and carry out position adjustment, so that first material taking subassembly and second material taking subassembly are close to or away from the central material taking subassembly simultaneously, realize the material taking adjustment of different interval, the utility model provides a variable distance material taking mechanism, possesses simple structure, the characteristic that occupies little space, and can quick adjustment the interval between material taking subassembly.

Description

Technical Field

[0001] This utility model relates to the field of automated material handling technology, and in particular to a variable-distance material handling mechanism. Background Technology

[0002] Automation technology is widely used in industry. In automated production, the material handling mechanism is the starting point of the equipment, which needs to load raw materials, such as round shells. During the loading process, the raw materials are usually picked up from the material tray by a robotic arm or manually and transferred to a designated fixture for fixation and production. Since the raw materials on the material tray are arranged in an orderly and compact manner, the spacing between them is inconsistent with the fixed spacing on the fixture. This means that the spacing between the raw materials needs to be adjusted during the material handling process so that the spacing between the raw materials at the end of the transfer matches the spacing between the fixtures. This ensures accurate placement of the raw materials, reduces errors, and improves production efficiency and yield.

[0003] Currently, the variable pitch mechanism of the material handling device has a complex structural design, resulting in a large space occupation for the entire material handling device and a complex and inefficient variable pitch process. Utility Model Content

[0004] The purpose of this invention is to overcome the shortcomings of existing technologies, such as complex structure and large space occupation, and to provide a variable-pitch material handling mechanism that is simple in structure, occupies little space, and is highly efficient. Through optimized design, it can quickly adjust the spacing between the material handling components, thereby ensuring accurate clamping and placement and improving the efficiency of automated production.

[0005] To achieve the above objectives, this utility model provides a variable-pitch material handling mechanism, including a mounting plate. A rotating rod is mounted on the mounting plate, and a drive motor is driven to drive the rotating rod to rotate. A central material handling component is mounted in the middle of the mounting plate. A plurality of first material handling components are sleeved on one end of the rotating rod, and a plurality of second material handling components are sleeved on the other end. The central material handling component is located between the plurality of first material handling components and the plurality of second material handling components. Both the first and second material handling components are driven to drive the rotating rod. The first and second material handling components adjust their positions as the rotating rod rotates, so that the first and second material handling components simultaneously move closer to or further away from the central material handling component, thereby achieving material handling adjustment at different pitches.

[0006] Preferably, the assembly also includes a frame mounted on one side of the mounting plate, the frame being equipped with a horizontal drive assembly and a vertical drive assembly, the end of which is connected to the mounting plate. The horizontal drive assembly and the vertical drive assembly work together to drive the first material picking assembly, the second material picking assembly, and the central material picking assembly on the mounting plate to reciprocate in the horizontal and vertical directions.

[0007] Preferably, the rotating rod has a first arc-shaped groove on one side and a second arc-shaped groove on the other side. The first and second arc-shaped grooves rotate in opposite directions. The first material-taking component is driven to the first arc-shaped groove, and the second material-taking component is driven to the second arc-shaped groove. Synchronous adjustment is achieved by rotating in opposite directions.

[0008] Preferably, the first material handling component includes a first mounting block installed on one side of the mounting plate, a material handling cylinder installed at the lower end of the first mounting block, material handling claws installed on both sides of the material handling cylinder, the material handling cylinder driving the material handling claws to move inward or open outward, and a protrusion installed in the middle of the first mounting block, the protrusion being inserted into the first arc-shaped groove and engaging with the first arc-shaped groove.

[0009] Preferably, the second material handling component includes a second mounting block installed on one side of the mounting plate. A material handling cylinder is installed at the lower end of the second mounting block. Material handling claws are installed on both sides of the material handling cylinder. The material handling cylinder drives the material handling claws to move inward or open outward. A protrusion is installed in the middle of the second mounting block. The protrusion is inserted into the second arc-shaped groove and engages with the second arc-shaped groove.

[0010] Preferably, the central material handling assembly includes a central mounting block installed in the middle of the mounting plate, a material handling cylinder is installed at the lower end of the central mounting block, and material handling claws are installed on both sides of the material handling cylinder. The material handling cylinder drives the material handling claws to move inward or open outward.

[0011] Preferably, the first mounting block, the second mounting block, and the central mounting block are all provided with receiving grooves for accommodating the rotating rod; the first mounting block, the second mounting block, and the central mounting block are all equipped with longitudinal sliders at both ends, and the mounting plate is equipped with a longitudinal guide rail. The longitudinal sliders are sleeved on the longitudinal guide rails, and the first mounting block, the second mounting block, and the central mounting block slide longitudinally along the longitudinal guide rails via the longitudinal sliders.

[0012] Preferably, the drive motor is mounted on one side of the mounting plate, with a first synchronous pulley at its end, and a second synchronous pulley at one end of the rotating rod. The first and second synchronous pulleys are connected by a synchronous belt. The drive motor drives the first synchronous pulley to rotate, and drives the second synchronous pulley through the synchronous belt, thereby causing the rotating rod to rotate and adjusting the distance between the first and second material picking components and the central material picking component.

[0013] Preferably, the lateral drive assembly includes a lateral cylinder mounted on the frame and a lateral mounting block mounted at the end of the lateral cylinder, wherein the lateral cylinder drives the lateral mounting block to reciprocate laterally; the vertical drive assembly includes a vertical cylinder mounted on the lateral mounting block and a vertical mounting block mounted at the end of the vertical cylinder, wherein the vertical mounting block is L-shaped and connected to a mounting plate, and the mounting plate is mounted in the middle of the vertical mounting block.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0015] In this invention, the central material-grabbing component is positioned between several first material-grabbing components and several second material-grabbing components. Furthermore, the central material-grabbing component does not need to move and will not move. Both the first and second material-grabbing components are connected to a rotating rod via a transmission connection. When the drive motor drives the rotating rod to rotate, the first and second material-grabbing components adjust their positions accordingly, causing them to simultaneously move closer to or further away from the central material-grabbing component, thus achieving material-grabbing adjustments at different intervals. Through optimized design, this invention enables rapid adjustment of the spacing between the material-grabbing components, thereby ensuring precise clamping and placement and improving automated production efficiency. Attached Figure Description

[0016] 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 some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the structure of a variable pitch material handling mechanism provided by this utility model;

[0018] Figure 2 This is a front structural diagram of the variable-pitch material handling body 51 provided by this utility model;

[0019] Figure 3 This is a schematic diagram of the back structure of the variable-pitch material handling body 51 provided by this utility model;

[0020] Figure 4 This is a schematic diagram of the structure of the central material handling assembly provided by this utility model;

[0021] Figure 5 This is a schematic diagram of the back structure of the first material handling component provided by this utility model;

[0022] Figure 6 This is a schematic diagram of the structure of the protrusion provided by this utility model;

[0023] Figure 7 This is a schematic diagram of the structure of the rotating rod provided by this utility model;

[0024] Figure 8 This is a schematic diagram of the structure of the drive component provided by this utility model.

[0025] The diagram includes:

[0026] 1. Mounting plate; 2. Rotating rod; 3. Drive motor; 4. Central material handling assembly; 6. First material handling assembly; 7. Second material handling assembly; 21. Frame; 31. Horizontal drive assembly; 32. Vertical drive assembly; 22. First arc-shaped groove; 23. Second arc-shaped groove; 61. First mounting block; 62. Material handling cylinder; 63. Material handling claw; 64. Protrusion; 71. Second mounting block; 41. Central mounting block; 77. Receiving groove; 78. Longitudinal slider; 79. Longitudinal guide rail; 35. First synchronous pulley; 33. Second synchronous pulley; 311. Horizontal cylinder; 312. Horizontal mounting block; 321. Vertical cylinder; 322. Vertical mounting block. Detailed Implementation

[0027] The technical solution of this embodiment of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiment is one embodiment of the present invention, and not all embodiments thereof. Based on this embodiment of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0028] Please refer to Figures 1 to 8 This utility model provides a variable pitch material handling mechanism.

[0029] like Figure 1 As shown, in this embodiment, the variable-pitch material handling mechanism includes a variable-pitch material handling body 51 mounted on one side and a drive assembly 52 mounted on the other side. The drive assembly 52 includes a lateral drive assembly 31 and a vertical drive assembly 32, which drive the variable-pitch material handling body 51 to move laterally and vertically, thereby adjusting the position of the variable-pitch material handling body 51 in space. In other embodiments, the drive assembly 52 can also be a multi-axis manipulator to achieve more degrees of freedom and more flexible spatial positioning.

[0030] like Figure 2 and Figure 3 As shown, the variable pitch material handling body 51 includes a mounting plate 1, which is used to install various parts and to connect with the drive assembly 52. ​​Specifically, a rotating rod 2 is mounted on one side of the mounting plate 1 and a drive motor 3 is mounted on the other side. The mounting plate 1 is also fixedly mounted in the middle of the vertical mounting block 322.

[0031] Furthermore, such as Figure 3 As shown, the rotating rod 2 is connected to the drive motor 3 via a synchronous belt drive. The drive motor 3 drives the rotating rod 2 to rotate forward and backward, thereby enabling the material handling component to move closer to and further away from the rotating rod.

[0032] In this embodiment, a total of five material handling components are provided, that is, an odd number of material handling components, in which the middle material handling component needs to remain stationary; in other embodiments, an even number of material handling components can be provided, and the material handling components on both sides can be moved synchronously by adjusting the position of the arc groove on the rotating rod 2; of course, the middle material handling component can also be directly eliminated and not set; in this way, two are set at each end, so that four material handling components can operate synchronously.

[0033] like Figure 1 As shown, a central material handling component 4 is installed in the middle of the mounting plate 1. The central material handling component 4 is fixed in place, and several first material handling components 6 and second material handling components 7 are installed on both sides respectively.

[0034] Specifically, one end of the rotating rod 2 is fitted with a plurality of first material picking components 6, and the other end is fitted with a plurality of second material picking components 7. The central material picking component 4 is located between the plurality of first material picking components 6 and the plurality of second material picking components 7. The first material picking components 6 and the second material picking components 7 are both connected to the rotating rod 2 in a transmission manner. The first material picking components 6 and the second material picking components 7 adjust their positions as the rotating rod 2 rotates, so that the first material picking components 6 and the second material picking components 7 move closer to or away from the central material picking component 4 at the same time, thereby realizing material picking adjustment at different intervals.

[0035] The following definition can be made: When the drive motor 3 drives the rotating rod 2 to rotate forward, the rotating rod 2 rotates forward, driving the first material picking component 6 and the second material picking component 7 on the rotating rod 2 to move closer to the central material picking component 4. Conversely, when the drive motor 3 drives the rotating rod 2 to rotate in reverse, the first material picking component 6 and the second material picking component 7 move away from the central material picking component 4.

[0036] Furthermore, in the initial state: the first picking component 6, the second picking component 7, and the central picking component 4 are close to each other, with a small distance between them; they move towards the material tray to clamp the raw material on the tray. After clamping, they move towards the fixture to load the raw material. During this process, the drive motor 3 drives the rotating rod 2 to rotate, causing the first picking component 6 and the second picking component 7 to gradually move away from the central picking component 4, adjusting to a suitable distance, and placing the raw material at the ends of the first picking component 6, the second picking component 7, and the central picking component 4 onto the fixture, ensuring accurate positioning of the raw material. Subsequently, the drive motor 3 drives the rotating rod 2 to reverse, causing the first picking component 6, the second picking component 7, and the central picking component 4 to move closer to each other to return to the initial state, preparing for the next picking operation. This design not only improves picking efficiency but also ensures accurate positioning of the raw material and reduces operational errors.

[0037] like Figure 8 As shown, the drive assembly 52 includes a frame 21 mounted on one side of the mounting plate 1. A horizontal drive assembly 31 is mounted on the frame 21, and a vertical drive assembly 32 is mounted on the horizontal drive assembly 31. The end of the vertical drive assembly 32 is connected to the mounting plate 1. The horizontal drive assembly 31 and the vertical drive assembly 32 work together to drive the first material picking assembly 6, the second material picking assembly 7 and the central material picking assembly 4 on the mounting plate 1 to reciprocate in the horizontal and vertical directions.

[0038] like Figure 8 As shown, the horizontal drive component 31 and the vertical drive component 32 can be purchased as finished modules or customized according to actual needs; however, in order to adapt to actual needs and reduce costs, in this embodiment, both the horizontal drive component 31 and the vertical drive component 32 are driven by cylinders. Cylinders have a simple structure, low cost and are easy to maintain, and precise displacement adjustment is achieved through air pressure control.

[0039] Specifically, such as Figure 8 As shown, the transverse drive assembly 31 includes a transverse cylinder 311 mounted on the frame 21 and a transverse mounting block 312 mounted at the end of the transverse cylinder 311. The transverse cylinder 311 drives the transverse mounting block 312 to reciprocate laterally. To make the movement of the transverse mounting block 312 more stable, two transverse guide rails 313 are mounted on the frame 21. A transverse slider 314 is sleeved on the transverse guide rails 313. The transverse slider 314 is fixedly connected to the transverse mounting block 312. The transverse cylinder 311 pushes the transverse mounting block 312 to move smoothly along the transverse guide rails 313 through the transverse slider 314.

[0040] Similarly, the vertical drive assembly 32 includes a vertical cylinder 321 mounted on the horizontal mounting block 312 and a vertical mounting block 322 mounted at the end of the vertical cylinder 321. The vertical cylinder 321 drives the vertical mounting block 322 to reciprocate vertically. To ensure smooth movement, a vertical guide rail 323 is provided on the horizontal mounting block 312, and a vertical slider 324 is fitted on the vertical guide rail 323. The vertical slider 324 is fixedly connected to the vertical mounting block 322, and the vertical cylinder 321 pushes the vertical mounting block 322 to move smoothly along the vertical guide rail 323 through the vertical slider 324.

[0041] In order to connect with the variable-pitch material handling body 51, such as Figure 8 As shown, the vertical mounting block 322 is L-shaped and has a longitudinal extension portion. The longitudinal extension portion is connected to the mounting plate 1, and the mounting plate 1 is installed in the middle of the vertical mounting block 322.

[0042] like Figure 7 As shown, the rotating rod 2 has a first arc-shaped groove 22 on one side and a second arc-shaped groove 23 on the other side. The first arc-shaped groove 22 and the second arc-shaped groove 23 rotate in opposite directions. The first material picking component 6 is connected to the first arc-shaped groove 22, and the second material picking component 7 is connected to the second arc-shaped groove 23. Synchronous adjustment is achieved by rotating in opposite directions.

[0043] In this embodiment, the first arc-shaped groove 22 and the second arc-shaped groove 23 are equidistant. In other embodiments, if it is necessary to adjust the first material handling component 6 and the second material handling component 7 to be unequally spaced, the first arc-shaped groove 22 and the second arc-shaped groove 23 can be differentiated by adjusting their curvature or spacing to meet actual requirements. This differentiated design not only improves adjustment flexibility but also enhances equipment adaptability, ensuring efficient operation under different working conditions.

[0044] like Figure 5 As shown, the first material-grabbing component 6 includes a first mounting block 61 installed on one side of the mounting plate 1. A material-grabbing cylinder 62 is installed at the lower end of the first mounting block 61. Material-grabbing claws 63 are installed on both sides of the material-grabbing cylinder 62. The material-grabbing cylinder 62 drives the material-grabbing claws 63 to move inward to grasp the raw material. The inner side of the material-grabbing claws 63 is provided with an arc-shaped groove 65, which matches the outer diameter of the raw material to ensure a stable grasp. The material-grabbing cylinder 62 drives the material-grabbing claws 63 to open outward to release the raw material.

[0045] like Figure 5 As shown, a protrusion 64 is installed in the middle of the first mounting block 61, such as... Figure 6As shown, one end of the protrusion 64 is fixedly connected to the middle of the first mounting block 61 by a bolt 66. In addition, the protrusion 64 is inserted into the first arc-shaped groove 22 and engages with the first arc-shaped groove 22 to realize the transmission connection. The protrusion 64 slides along the first arc-shaped groove 22, driving the first material picking component 6 to move longitudinally.

[0046] Similarly, such as Figure 2 As shown, the second material handling component 7 includes a second mounting block 71 mounted on one side of the mounting plate 1. A material handling cylinder 62 is mounted on the lower end of the second mounting block 71. Material handling claws 63 are mounted on both sides of the material handling cylinder 62. The material handling cylinder 62 drives the material handling claws 63 to move inward or outward. A protrusion 64 is mounted in the middle of the second mounting block 71. The protrusion 64 is inserted into the second arc-shaped groove 23 and engages with the second arc-shaped groove 23 to achieve a transmission connection. The protrusion 64 slides along the second arc-shaped groove 23, driving the second material handling component 7 to move longitudinally, ensuring that the two material handling components are synchronized and coordinated, accurately controlling the gripping and releasing, improving overall work efficiency, and adapting to diversified production needs.

[0047] like Figure 4 As shown, the central material handling component 4 does not need to be moved. The central material handling component 4 includes a central mounting block 41 installed in the middle of the mounting plate 1. Therefore, the central mounting block 41 is fixedly installed in the middle of the mounting plate 1. A material handling cylinder 62 is installed at the lower end of the central mounting block 41. Material handling claws 63 are installed on both sides of the material handling cylinder 62. The material handling cylinder 62 drives the material handling claws 63 to move inward or open outward.

[0048] In this embodiment, the material-grabbing cylinders 62 at the lower ends of the first mounting block 61, the second mounting block 71, and the central mounting block 41 all adopt the same specification and simultaneously grasp the same raw material. In other embodiments, different models of material-grabbing cylinders 62 can be selected according to different raw material specifications to adapt to the grasping requirements of different raw materials. The material-grabbing cylinders 62 at the lower ends of the first mounting block 61, the second mounting block 71, and the central mounting block 41 can also be of different specifications to meet diverse production needs and improve equipment adaptability.

[0049] like Figure 5 As shown, to avoid interference with the rotating rod 2, the first mounting block 61, the second mounting block 71, and the central mounting block 41 are all provided with receiving grooves 77 for accommodating the rotating rod 2; furthermore, as Figure 4As shown, in order to maintain stable longitudinal movement, longitudinal sliders 78 are installed at both ends of the first mounting block 61, the second mounting block 71 and the central mounting block 41. A longitudinal guide rail 79 is installed on the mounting plate 1. The longitudinal sliders 78 are sleeved on the longitudinal guide rail 79. The first mounting block 61, the second mounting block 71 and the central mounting block 41 slide longitudinally along the longitudinal guide rail 79 through the longitudinal sliders 78.

[0050] like Figure 3 As shown, the drive motor 3 is mounted on one side of the mounting plate 1, and a first synchronous pulley 35 is mounted at its end. A second synchronous pulley 33 is mounted at one end of the rotating rod 2. The first synchronous pulley 35 and the second synchronous pulley 33 are connected by a synchronous belt. The drive motor 3 drives the first synchronous pulley 35 to rotate, and drives the second synchronous pulley 33 through the synchronous belt, thereby causing the rotating rod 2 to rotate and adjusting the distance between the first material picking component 6 and the second material picking component 7 and the central material picking component 4.

[0051] The operation steps of the variable pitch material handling mechanism are as follows:

[0052] Step S1: The horizontal drive component 31 and the vertical drive component 32 work together to drive the variable-pitch material picking body 51 to move closer to the material tray. Specifically, the horizontal cylinder 311 drives the horizontal mounting block 312 to move laterally and move laterally closer to the material tray, and the vertical cylinder 321 drives the vertical mounting block 322 to move vertically and move laterally closer to the material tray. At this time, the first material picking component 6, the second material picking component 7 and the central material picking component 4 are close to each other and the distance is small.

[0053] Step S2: The picking cylinder 62 drives the picking claw 63 to open, ready to grab the raw material in the material tray; at the same time, the vertical cylinder 321 drives the picking claw 63 to move downward, so that the raw material is between the picking claws 63; the picking cylinder 62 retracts, the picking claw 63 closes, and grabs the raw material.

[0054] Step S3: After the picking claw 63 grabs the raw material, the vertical cylinder 321 drives the picking claw 63 to move upward and detach from the material tray; the horizontal cylinder 311 and the vertical cylinder 321 work together to drive the picking claw 63 away from the material tray and closer to the fixture.

[0055] Step S4: Start the drive motor 3 and drive the rotating rod 2 to rotate via the synchronous belt. Adjust the spacing of the material picking components. The drive motor 3 drives the rotating rod 2 to rotate, so that the first material picking component 6 and the second material picking component 7 gradually move away from the central material picking component 4 and are adjusted to a suitable spacing. Release the picking claws 63 at the ends of the first material picking component 6, the second material picking component 7 and the central material picking component 4 and place the raw material on the fixture.

[0056] Step S5: The horizontal cylinder 311 and the vertical cylinder 321 work together to drive the picking claw 63 away from the fixture; the drive motor 3 drives the rotating rod 2 to reverse again, so that the first picking component 6, the second picking component 7 and the central picking component 4 move closer to each other to restore the initial state, and prepare for the next picking operation.

[0057] The above embodiments are preferred embodiments of the present utility model, but the embodiments of the present utility model are not limited to the above embodiments. Any changes, modifications, substitutions, combinations, or simplifications made without departing from the spirit and principle of the present utility model shall be considered equivalent substitutions and shall be included within the protection scope of the present utility model.

Claims

1. A variable-pitch material handling mechanism, characterized in that: The device includes a mounting plate (1), on which a rotating rod (2) is mounted. The rotating rod (2) is connected to a drive motor (3), which drives the rotating rod (2) to rotate. A central material-taking component (4) is mounted in the middle of the mounting plate (1). A plurality of first material-taking components (6) are fitted at one end of the rotating rod (2), and a plurality of second material-taking components (7) are fitted at the other end. The central material-taking component (4) is located between the plurality of first material-taking components (6) and the plurality of second material-taking components (7). The first material-taking components (6) and the second material-taking components (7) are both connected to the rotating rod (2) in a driving manner. The first material-taking components (6) and the second material-taking components (7) adjust their positions as the rotating rod (2) rotates, so that the first material-taking components (6) and the second material-taking components (7) move closer to or away from the central material-taking component (4) at the same time, thereby achieving material-taking adjustment at different intervals.

2. The variable-pitch material handling mechanism according to claim 1, characterized in that: It also includes a frame (21) mounted on one side of the mounting plate (1), on which a horizontal drive assembly (31) is mounted, and a vertical drive assembly (32) is mounted on the horizontal drive assembly (31). The end of the vertical drive assembly (32) is connected to the mounting plate (1). The horizontal drive assembly (31) and the vertical drive assembly (32) work together to drive the first material picking assembly (6), the second material picking assembly (7) and the central material picking assembly (4) on the mounting plate (1) to reciprocate in the horizontal and vertical directions.

3. The variable-pitch material handling mechanism according to claim 1, characterized in that: The rotating rod (2) has a first arc-shaped groove (22) on one side and a second arc-shaped groove (23) on the other side. The first arc-shaped groove (22) and the second arc-shaped groove (23) rotate in opposite directions. The first material taking component (6) is connected to the first arc-shaped groove (22) and the second material taking component (7) is connected to the second arc-shaped groove (23). Synchronous adjustment is achieved by rotating in opposite directions.

4. The variable-pitch material handling mechanism according to claim 3, characterized in that: The first material handling component (6) includes a first mounting block (61) mounted on one side of the mounting plate (1). A material handling cylinder (62) is mounted at the lower end of the first mounting block (61). Material handling claws (63) are mounted on both sides of the material handling cylinder (62). The material handling cylinder (62) drives the material handling claws (63) to move inward or open outward. A protrusion (64) is mounted in the middle of the first mounting block (61). The protrusion (64) is inserted into the first arc-shaped groove (22) and engages with the first arc-shaped groove (22).

5. The variable-pitch material handling mechanism according to claim 4, characterized in that: The second material handling component (7) includes a second mounting block (71) installed on one side of the mounting plate (1). The lower end of the second mounting block (71) is equipped with a material handling cylinder (62). The middle part of the second mounting block (71) is equipped with a protrusion (64). The protrusion (64) is inserted into the second arc-shaped groove (23) and engages with the second arc-shaped groove (23).

6. The variable-pitch material handling mechanism according to claim 5, characterized in that: The central material handling assembly (4) includes a central mounting block (41) installed in the middle of the mounting plate (1), and a material handling cylinder (62) is installed at the lower end of the central mounting block (41).

7. A variable-pitch material handling mechanism according to claim 6, characterized in that: The first mounting block (61), the second mounting block (71) and the central mounting block (41) are all provided with receiving grooves (77) for accommodating the rotating rod (2); the first mounting block (61), the second mounting block (71) and the central mounting block (41) are all equipped with longitudinal sliders (78) at both ends; the mounting plate (1) is equipped with a longitudinal guide rail (79); the longitudinal slider (78) is sleeved on the longitudinal guide rail (79); the first mounting block (61), the second mounting block (71) and the central mounting block (41) slide longitudinally along the longitudinal guide rail (79) through the longitudinal slider (78).

8. The variable-pitch material handling mechanism according to claim 1, characterized in that: The drive motor (3) is installed on one side of the mounting plate (1) and the end is equipped with a first synchronous wheel (35). The rotating rod (2) is equipped with a second synchronous wheel (33) at one end. The first synchronous wheel (35) and the second synchronous wheel (33) are connected by a synchronous belt. The drive motor (3) drives the first synchronous wheel (35) to rotate and drives the second synchronous wheel (33) through the synchronous belt, thereby causing the rotating rod (2) to rotate and adjusting the distance between the first material picking component (6) and the second material picking component (7) and the central material picking component (4).

9. A variable-pitch material handling mechanism according to claim 2, characterized in that: The lateral drive assembly (31) includes a lateral cylinder (311) mounted on the frame (21) and a lateral mounting block (312) mounted at the end of the lateral cylinder (311). The lateral cylinder (311) drives the lateral mounting block (312) to reciprocate laterally. The vertical drive assembly (32) includes a vertical cylinder (321) mounted on the lateral mounting block (312) and a vertical mounting block (322) mounted at the end of the vertical cylinder (321). The vertical mounting block (322) is L-shaped and connected to the mounting plate (1). The mounting plate (1) is mounted in the middle of the vertical mounting block (322).

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