Distance-adjusting feeding equipment

Abstract

The utility model provides distance-adjusting feeding equipment. The distance-adjusting feeding equipment comprises a material carrying plate, a rotating mechanism, a grabbing mechanism and a distance changing mechanism. The top surface of the material carrying plate comprises a first material carrying area and a second material carrying area; the rotating mechanism is used for driving the material carrying plate to rotate, so that the first material carrying area and the second material carrying area are alternately located at the feeding position. The grabbing mechanism is used for grabbing the multiple materials borne by the first material carrying area or the second material carrying area and moving the multiple materials to the pitch changing mechanism. The pitch changing mechanism comprises a jig module and a pitch changing driving module used for driving the jig module. After the jig module bears the multiple materials, the variable-pitch driving module drives the jig module to be converted from the first state to the second state so as to adjust the distance between the multiple materials. The manual feeding process, the material taking and placing process of the grabbing mechanism and the pitch changing process of the pitch changing mechanism can be independently and simultaneously carried out, action conflicts cannot be generated between the processes, in this way, all the processes can be simultaneously carried out, and the production efficiency can be improved.

Description

Technical Field

[0001] This application relates to the field of automatic feeding equipment technology, and in particular to an adjustable feeding device. Background Technology

[0002] In manufacturing, automated equipment is frequently used for adjusting material spacing and loading. Currently, the common workflow of automated equipment is as follows: manual placement of trayed materials into the loading area → servo-driven pitch-adjusting mechanism adjusts the material spacing → gripping mechanism picks up the adjusted material → the adjusted material is placed into another material area → waiting for another gripping mechanism to pick up the material and place it at the next workstation. In this process, each step requires an automated mechanism to perform the corresponding operation. This results in a large number of automated mechanisms, disordered arrangement, and unreasonable placement, leading to long material handling times between workstations and poor coordination between the automated mechanisms, resulting in significant waiting time and low production efficiency. For these reasons, current automated equipment for adjusting material spacing suffers from low production efficiency. Utility Model Content

[0003] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide an adjustable feeding device, which can solve the technical problem of low production efficiency in the existing technology.

[0004] This utility model provides an adjustable-pitch feeding device, including a material carrier plate, a rotating mechanism, a gripping mechanism, and a pitch-changing mechanism. The top surface of the material carrier plate includes a first material carrier area and a second material carrier area arranged in parallel. The output end of the rotating mechanism is connected to the material carrier plate to drive the material carrier plate to rotate, so that the first material carrier area and the second material carrier area are alternately located in the feeding position. The gripping mechanism is located on one side of the feeding position to grip multiple materials carried by the first material carrier area or the second material carrier area at the feeding position and move the multiple materials to the pitch-changing mechanism. The pitch-changing mechanism includes a fixture module for carrying multiple materials and a pitch-changing drive module for driving the fixture module to switch back and forth between a first state of inward convergence and a second state of outward divergence. After the fixture module carries multiple materials, the pitch-changing drive module drives the fixture module to change from the first state to the second state to adjust the distance between the multiple materials.

[0005] In one embodiment, the first material loading area is provided with a detachable first material loading plate, and the second material loading area is provided with a detachable second material loading plate.

[0006] In one embodiment, the adjustable-pitch feeding device further includes a first baffle plate and a second baffle plate. The first baffle plate is fixedly connected to the top surface of the carrying plate and is located between the first carrying plate and the second carrying plate. The second baffle plate is suspended above the first carrying plate and the second carrying plate via the frame. When the first carrying area or the second carrying area is in the feeding position, the orthographic projection of the first baffle plate on the top surface of the carrying plate and the orthographic projection of the second baffle plate on the top surface of the carrying plate coincide, so that the first carrying area and the second carrying area are isolated by the first baffle plate and the second baffle plate.

[0007] In one embodiment, the rotating mechanism includes a motor and a worm gear structure. The motor is shaft-connected to the input end of the worm gear structure, and the material carrier plate is shaft-connected to the output end of the worm gear structure. The motor drives the material carrier plate to rotate through the worm gear.

[0008] In one embodiment, the fixture module includes two symmetrically arranged carrier groups, each carrier group including at least one guide rail and one carrier; the carrier is slidably connected to the guide rail; the variable pitch drive module includes two drive components, each drive component including a telescopic drive element and a linkage structure, the output shaft of each telescopic drive element is connected to a carrier through a linkage structure; each carrier carries multiple materials one by one; under the drive of each telescopic drive element, each carrier drives the corresponding material to slide back and forth along the corresponding guide rail to adjust the spacing between the materials.

[0009] In one embodiment, each vehicle group includes two symmetrically arranged vehicles and two symmetrically arranged guide rails; each vehicle is slidably connected to one guide rail; the linkage structure includes a linkage rod and a connecting seat, the connecting seat is fixedly connected to the output end of the telescopic drive member, and the linkage rod is fixedly connected to the connecting seat; the two ends of the linkage rod are respectively connected to the two vehicles of the vehicle group, and the telescopic drive member drives the two vehicles of the vehicle group to slide synchronously along the corresponding guide rails through the connecting seat and the linkage rod.

[0010] In one embodiment, the two guide rails of the vehicle assembly are arranged in a figure-eight shape, and the length direction of the linkage rod and the extension direction of the guide rail are set at an angle.

[0011] In one embodiment, the pitch-changing mechanism further includes a first positioning plate for engaging with a gripping mechanism in a first state and a second positioning plate for engaging with an external material handling mechanism in a second state.

[0012] In one embodiment, the gripping mechanism includes a robotic arm and a material handling mechanism; the material handling mechanism includes a mounting frame, a drive motor, multiple rotating components, and a linkage assembly; the top side of the mounting frame is fixedly connected to the output end of the robotic arm; the multiple rotating components are evenly arranged on the bottom side of the mounting frame; the linkage assembly is located inside the mounting frame and connected to the multiple rotating components; the drive motor is located on one side of the mounting frame, and the output end of the drive motor is connected to the linkage assembly; each rotating component is provided with a suction nozzle for sucking up material; after the suction nozzle sucks up the material, the drive motor drives the multiple rotating components to rotate synchronously through the linkage assembly to change the position of the material.

[0013] In one embodiment, the mounting frame includes a lower support plate and an upper support plate suspended above the lower support plate by multiple columns; the upper support plate is fixedly connected to the output end of the robot; the top ends of the rotating shafts of multiple rotating components rotatably pass through the lower support plate and extend between the upper and lower support plates; the linkage assembly includes multiple pulleys, a transmission belt, and a tensioning wheel; the multiple pulleys are sequentially fitted onto the top ends of the rotating shafts of the multiple rotating components and the output end of the drive motor; the transmission belt is fitted onto the multiple pulleys, and the two ends of the rotating shaft of the tensioning wheel are rotatably mounted on the upper and lower support plates respectively, with the wheel rim of the tensioning wheel abutting against the transmission belt.

[0014] Beneficial effects:

[0015] The top surface of the loading plate of the adjustable-pitch feeding device includes a first loading area and a second loading area arranged side by side. A rotating mechanism drives the loading plate to rotate, causing the first and second loading areas to alternately occupy the loading position. While the material in the first loading area is being gripped, the second loading area can be loaded manually simultaneously. The gripping mechanism grips multiple materials carried in either the first or second loading area at the loading position and moves them to the adjustable-pitch mechanism. The adjustable-pitch mechanism includes a fixture module for carrying multiple materials and a adjustable-pitch drive module for driving the fixture module to switch back and forth between a first inward-converging state and a second outward-diverging state. After the fixture module carries multiple materials, the adjustable-pitch drive module drives the fixture module to change from the first state to the second state to adjust the distance between the multiple materials. When the gripping mechanism grips materials at the loading position, the adjustable-pitch mechanism can synchronously adjust the spacing between the materials.

[0016] In the aforementioned manner, the manual feeding process of the adjustable-gap feeding equipment, the material handling process of the gripping mechanism, and the pitch-changing process of the pitch-changing mechanism can be carried out independently and simultaneously without any conflict between them. This allows each process to proceed at the same time, which is beneficial for improving production efficiency. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this application, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the main structure of an embodiment of the present utility model.

[0019] Figure 2 This is a top view of the main structure of an embodiment of the present utility model.

[0020] Figure 3 This is a schematic diagram of the variable pitch mechanism according to an embodiment of the present utility model.

[0021] Figure 4 This is a schematic diagram of the material handling mechanism according to an embodiment of the present invention.

[0022] Explanation of icon numbers:

[0023] 11. First loading area; 111. First loading plate; 12. Second loading area; 121. Second loading plate; 20. Rotating mechanism; 30. Loading position; 40. Gripping mechanism; 41. Robotic arm; 42. Material handling mechanism; 421. Upper support plate; 422. Lower support plate; 423. Drive motor; 424. Rotating component; 425. Suction nozzle; 50. Pitch-changing mechanism; 51. Carrier assembly; 511. Carrier; 512. Telescopic drive component; 513. Connecting seat; 514. Linkage rod; 515. Guide rail; 61. First barrier plate; 62. Second barrier plate; 71. First positioning plate; 72. Second positioning plate; 80. Material. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application.

[0025] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on or indirectly on that other component. When a component is referred to as being "connected to" another component, it can be directly connected to or indirectly connected to that other component.

[0026] In the description of this application, "multiple" means two or more, unless otherwise expressly and specifically defined.

[0027] It should also be noted that the directional terms such as left, right, up, and down in the embodiments of this application are only relative concepts or are based on the normal use state of the product, and should not be considered as restrictive.

[0028] This utility model provides an adjustable-gap feeding device, which can be used to adjust the spacing of materials 80 and for automatic feeding. Please refer to [link / reference]. Figures 1-2 The adjustable-pitch feeding device of this embodiment mainly includes a material carrier plate, a rotating mechanism 20, a gripping mechanism 40, and a pitch-changing mechanism 50. The top surface of the material carrier plate includes a first material carrier area 11 and a second material carrier area 12 arranged in parallel. The output end of the rotating mechanism 20 is connected to the material carrier plate to drive the material carrier plate to rotate, so that the first material carrier area 11 and the second material carrier area 12 are alternately located at the feeding position 30. The gripping mechanism 40 is located on one side of the feeding position 30 to grip multiple materials 80 carried by the first material carrier area 11 or the second material carrier area 12 at the feeding position 30, and move the multiple materials 80 to the pitch-changing mechanism 50. The pitch-changing mechanism 50 includes a fixture module for carrying multiple materials 80 and a pitch-changing drive module for driving the fixture module to switch back and forth between a first state of inward convergence and a second state of outward divergence. After the fixture module carries multiple materials 80, the pitch-changing drive module drives the fixture module to change from the first state to the second state to adjust the distance between the multiple materials 80.

[0029] In this embodiment, the top surface of the material carrier plate includes a first material carrier area 11 and a second material carrier area 12 arranged side by side. The rotating mechanism 20 drives the material carrier plate to rotate, so that the first material carrier area 11 and the second material carrier area 12 are alternately located at the loading position 30. During the process of the material 80 in the first material carrier area being gripped, the second material carrier area 12 can be loaded manually at the same time. The gripping mechanism 40 grips the multiple materials 80 carried by the first material carrier area 11 or the second material carrier area 12 at the loading position 30 and moves the multiple materials 80 to the pitch-changing mechanism 50. The pitch-changing mechanism 50 includes a fixture module for carrying multiple materials 80 and a pitch-changing drive module for driving the fixture module to switch back and forth between a first state of inward convergence and a second state of outward divergence. After the fixture module carries multiple materials 80, the pitch-changing drive module drives the fixture module to change from the first state to the second state to adjust the distance between the multiple materials 80. In one work scenario, driven by the variable-pitch drive module, the fixture module can converge inward to a preset position, waiting for the gripping mechanism 40 to provide material 80. This corresponds to the first state of the fixture module converging inward. In another work scenario, after the fixture module carries multiple materials 80, it moves outward in a divergent manner to a preset position, increasing the distance between the multiple materials 80 carried by the fixture module. This corresponds to the second state of the fixture module diverging outward. When the gripping mechanism 40 grips the material 80 at the loading position 30, the variable-pitch mechanism 50 can simultaneously adjust the spacing of the materials 80. Through the aforementioned method, the manual loading process of the adjustable-pitch loading equipment, the material handling process of the gripping mechanism 40, and the pitch-changing process of the variable-pitch mechanism 50 can be performed independently and simultaneously without conflicting actions. This allows each process to proceed concurrently, which is beneficial for improving production efficiency.

[0030] like Figure 1-2 As shown, in one embodiment, the first material-carrying area 11 is provided with a detachable first material-carrying plate 111, and the second material-carrying area is provided with a detachable second material-carrying plate 121. In this embodiment, the bottom surfaces of both the first material-carrying plate 111 and the second material-carrying plate 121 are provided with slots, and the material-carrying plates are respectively provided with insert plates at positions corresponding to the first material-carrying area 11 and the second material-carrying area 12. The slots of the first material-carrying plate 111 and the second material-carrying plate 121 are respectively inserted into the corresponding insert plates, thereby limiting the first material-carrying plate 111 and the second material-carrying plate 121. When material needs to be loaded, simply lift the empty first material-carrying plate 111 and the second material-carrying plate 121 to remove them, and then place the fully loaded first material-carrying plate 111 or the second material-carrying plate 121 on the material-carrying plate, so that the slots are inserted into the insert plates. This is convenient for disassembly and assembly and helps to improve the material changing efficiency.

[0031] like Figure 1-2As shown, in one embodiment, the adjustable-distance feeding device further includes a first baffle plate 61 and a second baffle plate 62. The first baffle plate 61 is fixedly connected to the top surface of the carrying plate and is located between the first carrying plate 111 and the second carrying plate 121. The second baffle plate 62 is suspended above the first carrying plate 1111 and the second carrying plate 121 via a frame (not shown in the figure). When the first carrying area 11 or the second carrying area 12 is located at the feeding position 30, the orthographic projection of the first baffle plate 61 on the top surface of the carrying plate and the orthographic projection of the second baffle plate 62 on the top surface of the carrying plate coincide, so that the first baffle plate 61 and the second baffle plate 62 are aligned in the vertical direction, so that the first carrying area 11 and the second carrying area 12 are isolated by the first baffle plate 61 and the second baffle plate 62, and the gripping mechanism 40 is prevented from accidentally injuring the feeding personnel when picking up materials. When the rotating mechanism 20 drives the material plate to rotate, the first barrier plate 61 rotates accordingly, and the second barrier plate 62 will not interfere with the rotation of the first barrier plate 61.

[0032] In one embodiment, the rotating mechanism 20 includes a motor and a worm gear structure. The motor is shaft-connected to the input end of the worm gear structure, and the material carrier plate is shaft-connected to the output end of the worm gear structure. The motor drives the material carrier plate to rotate through the worm gear. The worm gear structure is prior art, and its specific working principle will not be detailed here. Of course, in other embodiments, the output shaft of a servo motor can be directly connected to the material carrier plate, and the servo motor can directly drive the material carrier plate to rotate.

[0033] Please combine Figure 1 and Figure 3 In one embodiment, the fixture module includes two symmetrically arranged carrier groups 51, each carrier group 51 including at least one guide rail 515 and one carrier 511. The carrier 511 is slidably connected to the guide rail 515. The variable pitch drive module includes two drive components, each drive component including a telescopic drive member 512 and a linkage structure. The output shaft of each telescopic drive member 512 is connected to a carrier 511 via a linkage structure. Multiple materials 80 are carried one-to-one by each carrier 511. The specific structure of the carrier 511 can be changed according to the shape of the materials 80 actually carried; therefore, the specific structure of the carrier 511 is not limited here. Driven by each telescopic drive member 512, each carrier 511 drives the corresponding material 80 to slide back and forth along the corresponding guide rail 515 to adjust the spacing between the materials 80.

[0034] like Figure 3As shown, in one embodiment, each carrier group 51 includes two symmetrically arranged carriers 511 and two symmetrically arranged guide rails 515. Each carrier 511 is slidably connected to one guide rail 515. The telescopic drive member 512 can be a linear telescopic cylinder, electric cylinder, etc. The linkage structure includes a linkage rod 514 and a connecting seat 513. The connecting seat 513 is fixedly connected to the output end of the telescopic drive member 512, and the linkage rod 514 is fixedly connected to the connecting seat 513. The two ends of the linkage rod 514 are respectively connected to the two carriers 511 of the carrier group 51. The telescopic drive member 512 drives the two carriers 511 of the carrier group 51 to slide synchronously along the corresponding guide rails 515 through the connecting seat 513 and the linkage rod 514.

[0035] In one embodiment, the two guide rails 515 of the carrier assembly 51 are arranged in a figure-eight shape, and the length direction of the linkage rod 514 and the extension direction of the guide rail 515 are set at an angle. In one working scenario, driven by the corresponding telescopic drive 512, the four empty carriers 511 can converge inward to a preset position, which corresponds to the first state of the fixture module converging inward. The empty carriers 511 wait for the gripping mechanism 40 to provide material 80. In another working scenario, the four fully loaded carriers 511 move outward to a preset position, increasing the spacing between the materials 80 carried by the four carriers 511. This corresponds to the second state of the fixture module diverging outward. At this time, the position of the four materials 80 is adapted to the action of the external material handling mechanism, which can grip the four materials 80 and transport them to the next workstation.

[0036] like Figure 3 As shown, in one embodiment, the pitch-changing mechanism 50 further includes a first positioning plate 71 for engaging with the gripping mechanism 40 in a first state and a second positioning plate 72 for engaging with an external material handling mechanism in a second state. The first positioning plate 71 defines the relative position between the gripping mechanism 40 and the pitch-changing mechanism 50, thereby increasing the material feeding accuracy of the gripping mechanism 40. The second positioning plate 72 defines the relative position between the pitch-changing mechanism 50 and the external material handling mechanism, thereby enabling the external material handling mechanism to grip the material 80 more accurately.

[0037] Please combine Figure 1 and Figure 4In one embodiment, the gripping mechanism 40 includes a robotic arm 41 and a material handling mechanism 42. The material handling mechanism 42 includes a mounting frame, a drive motor 423, multiple rotating parts 424, and a linkage assembly. The top side of the mounting frame is fixedly connected to the output end of the robotic arm 41. The multiple rotating parts 424 are evenly arranged on the bottom side of the mounting frame. The linkage assembly is located inside the mounting frame and connected to the multiple rotating parts 424. The drive motor 423 is located on one side of the mounting frame, and the output end of the drive motor 423 is connected to the linkage assembly. Each rotating part 424 is provided with a suction nozzle 425 for sucking up material 80. After the suction nozzle 425 sucks up material 80, the drive motor 423 drives the multiple rotating parts 424 to rotate synchronously through the linkage assembly to change the position of the material 80.

[0038] In one embodiment, the mounting frame includes a lower support plate 422 and an upper support plate 421 suspended above the lower support plate 422 by multiple columns. The upper support plate 421 is fixedly connected to the output end of the robot arm 41. The top ends of the shafts of multiple rotating components 424 rotatably pass through the lower support plate 422 and extend between the upper support plate 421 and the lower support plate 422. The linkage assembly includes multiple pulleys, a transmission belt, and a tensioning pulley. The multiple pulleys are sequentially fitted onto the top ends of the shafts of the multiple rotating components 424 and the output end of the drive motor 423. The transmission belt is fitted onto the multiple pulleys. During operation, the drive motor 423 drives the pulleys corresponding to each rotating component 424 through the transmission belt, thereby driving each rotating component 424 to rotate synchronously. The two ends of the shaft of the tensioning pulley are rotatably mounted on the upper support plate 421 and the lower support plate 422, respectively. The rim of the tensioning pulley abuts against the transmission belt to adjust the tension of the transmission belt.

[0039] In one embodiment, the rotating component 424 includes a square column and a rotating shaft at the top of the square column. The square column is rotatably mounted on the lower support plate 422 via the rotating shaft, and a pulley is sleeved on the rotating shaft. The suction nozzle 425 is movably mounted on the square column via a slide rail structure. When the suction nozzle 425 moves downward to contact the material 80, the suction nozzle 425 can adaptively move upward to achieve a buffering effect. The number of suction nozzles 425 can be changed according to the shape of the material 80. For example, in this embodiment, the number of suction nozzles 425 is two.

[0040] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. An adjustable-gap feeding device, characterized in that, The system includes a material carrier plate, a rotating mechanism (20), a gripping mechanism (40), and a pitch-changing mechanism (50). The top surface of the material carrier plate includes a first material loading area (11) and a second material loading area (12) arranged side by side. The output end of the rotating mechanism (20) is connected to the material carrier plate to drive the material carrier plate to rotate, so that the first material loading area (11) and the second material loading area (12) are alternately located at the loading position (30). The gripping mechanism (40) is located on one side of the loading position (30) to grip multiple materials (80) carried by the first material loading area (11) or the second material loading area (12) at the loading position (30) and move the multiple materials (80) to the pitch-changing mechanism (50). The pitch-changing mechanism (50) includes a fixture module for carrying multiple materials (80) and a pitch-changing drive module for driving the fixture module to switch back and forth between a first state of inward convergence and a second state of outward divergence. After the fixture module carries multiple materials (80), the variable pitch drive module drives the fixture module to change from the first state to the second state to adjust the distance between the multiple materials (80).

2. The adjustable-pitch feeding device according to claim 1, characterized in that, The first material loading area (11) is provided with a detachable first material loading plate (111), and the second material loading area (12) is provided with a detachable second material loading plate (121).

3. The adjustable-pitch feeding device according to claim 2, characterized in that, It also includes a first barrier plate (61) and a second barrier plate (62). The first barrier plate (61) is fixedly connected to the top surface of the material carrier plate and is located between the first material carrier plate (111) and the second material carrier plate (121). The second barrier plate (62) is suspended above the first material carrier plate (111) and the second material carrier plate (121) by the frame. When the first material carrier area (11) or the second material carrier area (12) is located at the loading position (30), the orthographic projection of the first barrier plate (61) on the top surface of the material carrier plate and the orthographic projection of the second barrier plate (62) on the top surface of the material carrier plate coincide, so that the first material carrier area (11) and the second material carrier area (12) are isolated by the first barrier plate (61) and the second barrier plate (62).

4. The adjustable-pitch feeding device according to claim 3, characterized in that, The rotating mechanism (20) includes a motor and a worm gear structure. The motor is axially connected to the input end of the worm gear structure, and the material carrier is axially connected to the output end of the worm gear structure. The motor drives the material carrier to rotate through the worm gear.

5. The adjustable-pitch feeding device according to claim 1, characterized in that, The fixture module includes two symmetrically arranged carrier groups (51), each carrier group (51) including at least one guide rail (515) and one carrier (511); the carrier (511) is slidably connected to the guide rail (515); the variable pitch drive module includes two drive components, each drive component including a telescopic drive element (512) and a linkage structure, the output shaft of each telescopic drive element (512) is connected to one carrier (511) through a linkage structure; each carrier (511) carries a plurality of materials (80) in turn; under the drive of each telescopic drive element (512), each carrier (511) drives the corresponding material (80) to slide back and forth along the corresponding guide rail (515) to adjust the spacing of each material (80).

6. The adjustable-pitch feeding device according to claim 5, characterized in that, Each of the vehicle groups (51) includes two symmetrically arranged vehicles (511) and two symmetrically arranged guide rails (515); each of the vehicles (511) is slidably connected to one of the guide rails (515); the linkage structure includes a linkage rod (514) and a connecting seat (513), the connecting seat (513) is fixedly connected to the output end of the telescopic drive member (512), and the linkage rod (514) is fixedly connected to the connecting seat (513); the two ends of the linkage rod (514) are respectively connected to the two vehicles (511) of the vehicle group (51), and the telescopic drive member (512) drives the two vehicles (511) of the vehicle group (51) to slide back and forth synchronously along the corresponding guide rails (515) through the connecting seat (513) and the linkage rod (514).

7. The adjustable-pitch feeding device according to claim 6, characterized in that, The two guide rails (515) of the vehicle assembly (51) are arranged in a figure-eight shape, and the length direction of the linkage rod (514) and the extension direction of the guide rail (515) are set at an angle.

8. The adjustable-pitch feeding device according to claim 1, characterized in that, The pitch-changing mechanism (50) further includes a first positioning plate (71) for engaging with the gripping mechanism (40) in the first state and a second positioning plate (72) for engaging with the external material handling mechanism in the second state.

9. The adjustable-pitch feeding device according to claim 1, characterized in that, The gripping mechanism (40) includes a robotic arm (41) and a material handling mechanism (42); the material handling mechanism (42) includes a mounting frame, a drive motor (423), multiple rotating parts (424), and a linkage assembly; the top side of the mounting frame is fixedly connected to the output end of the robotic arm (41); Multiple rotating parts (424) are evenly arranged on the bottom side of the mounting frame; the linkage assembly is located inside the mounting frame and connected to the multiple rotating parts (424); the drive motor (423) is located on one side of the mounting frame; the output end of the drive motor (423) is connected to the linkage assembly; each rotating part (424) is provided with a suction nozzle (425) for sucking up the material (80); after the suction nozzle (425) sucks up the material (80), the drive motor (423) drives the multiple rotating parts (424) to rotate synchronously through the linkage assembly to change the position of the material (80).

10. The adjustable-pitch feeding device according to claim 9, characterized in that, The mounting frame includes a lower support plate (422) and an upper support plate (421) suspended above the lower support plate (422) by multiple columns; the upper support plate (421) is fixedly connected to the output end of the robot (41); the top ends of the rotating shafts of multiple rotating components (424) rotatably pass through the lower support plate (422) and extend between the upper support plate (421) and the lower support plate (422); the linkage assembly includes multiple pulleys, a transmission belt and a tensioning wheel; the multiple pulleys are respectively fitted onto the top ends of the rotating shafts of multiple rotating components (424) and the output end of the drive motor (423); the transmission belt is fitted onto the multiple pulleys, and the two ends of the rotating shaft of the tensioning wheel are rotatably mounted on the upper support plate (421) and the lower support plate (422), respectively, and the rim of the tensioning wheel abuts against the transmission belt.

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