Stock bin

Abstract

The utility model provides a stock bin and belongs to the technical field of machinery. The problem that the tray carrying efficiency is low is solved. The rack is provided with a top plate, the two brackets are arranged on the front side of the rack side by side and can move up and down, the mounting base is connected to the top plate and can move along the top plate, the grabbing assembly is fixed to the mounting base, the bottoms of the two ends of a mounting plate are fixedly connected with a first support and a second support respectively, and a second driving belt wheel is arranged in the first support; the side, facing the first support, of the second support is connected with a belt wheel base, a second driven belt wheel is arranged in the belt wheel base, the second driving belt wheel is matched with the second driven belt wheel through a second synchronous belt, the second synchronous belt is fixedly connected with the installation base, and a rod-shaped matching part is arranged on the side, back on to the first support, of the belt wheel base and penetrates through the second support. The belt wheel base and the second support are fixed in the circumferential direction of the matching part, the matching part is in threaded connection with an adjusting nut, and the adjusting nut abuts against the side, back on to the first support, of the second support. The tray carrying device has the advantages of high tray carrying efficiency and the like.

Description

Technical Field

[0001] This utility model belongs to the field of mechanical technology and relates to a hopper. Background Technology

[0002] In current machining processes, hoppers are frequently used in conjunction with robotic arms to facilitate loading and unloading. For example, the machine tool hopper disclosed in patent application number 202120103352.5 includes a frame with a first bracket and a second bracket spaced apart on it, both movable up and down; a first drive mechanism mounted on the frame that drives the first bracket to move up and down; a second drive mechanism mounted on the frame that drives the second bracket to move up and down; and a chuck mechanism movable left and right on the frame and connected to the first and second brackets. Between the frames, the clamping mechanism includes a mounting plate, two driving components, and two tray grippers. The mounting plate is movably mounted on the frame, and the two driving components are mounted on the mounting plate and move with it. The two tray grippers are respectively mounted on the output mounts of the corresponding driving components, and the two driving components drive the corresponding tray grippers to move closer or further apart. A third driving mechanism is mounted on the frame and drives the clamping mechanism to move back and forth. The third driving mechanism includes a servo motor and a lead screw. The servo motor is mounted on the frame and drives the lead screw to rotate. The bottom surface of the mounting plate is screwed to the lead screw. When the trays on the first tray are stacked to a certain height, the clamping mechanism clamps and transports the trays on the first tray to the second tray. For each tray removed from the first tray, the first driving mechanism drives the first tray to rise by one tray height. Similarly, for each tray brought to the second tray, the second driving mechanism drives the second tray to descend by one tray height, thus ensuring continuous tray transport.

[0003] The clamping mechanism is only used for the transfer of the material tray between the first and second brackets. That is, it only needs to transfer the material tray from the first bracket to the second bracket. Since both the material tray and the brackets are relatively large, the positioning of the clamping mechanism is not very demanding in practice. The clamping mechanism is actually driven by a lead screw and nut. As we all know, the lead screw and nut can achieve high-precision positioning, but the moving speed of the driven parts is relatively slow. Therefore, when the positioning of the clamping mechanism is not very demanding, using a lead screw and nut for driving will result in low material tray handling efficiency. Utility Model Content

[0004] The purpose of this invention is to address the aforementioned problems in the existing technology by proposing a hopper that solves the problem of low material handling efficiency.

[0005] The objective of this utility model can be achieved through the following technical solutions:

[0006] A hopper includes a frame with a top plate, two brackets arranged side-by-side along the length of the top plate on the front side of the frame, a mounting base connected to the top plate and movable thereal, and a gripping assembly fixed to the mounting base. Both brackets are movable up and down. The mounting plate has two supports fixedly connected to its bottom ends along its length: a first support and a second support. A drive motor is fixedly connected to the bottom of the first support. The shaft of the drive motor extends into the first support and is fixedly connected to a second drive pulley. A pulley seat is connected to the side of the second support facing the first support. A second driven pulley is provided in the pulley seat. The second drive pulley and the second driven pulley cooperate through a second synchronous belt, which is fixedly connected to the mounting base. A rod-shaped mating part is provided on the side of the pulley seat facing away from the first support. The mating part passes through the second support, and the pulley seat and the second support are fixed circumferentially to each other along the mating part. An adjusting nut is threadedly connected to the mating part, and the adjusting nut abuts against the side of the second support facing away from the first support.

[0007] In operation, one tray is at its lowest position, and the other is at its highest position (slightly lower than the height of the gripping component). Trays are stacked sequentially on the lowest tray until the top tray is positioned at the gripping component. For ease of understanding, the lowest tray is designated as the loading tray, and the highest tray as the unloading tray. The robotic arm sequentially picks up materials from the top tray and delivers them to the processing equipment for processing. The processed materials are then sequentially returned to the tray. Next, the gripping component grasps the tray. Then, the drive motor shaft rotates, and through the cooperation of the second driving pulley, the second synchronous belt, and the second driven pulley, drives the mounting base to slide rapidly, causing the gripping component to move the tray to the unloading tray. The gripping component then releases the tray, allowing it to be stacked on the tray. Finally, the drive motor shaft rotates in the opposite direction and drives the mounting base to quickly reset and slide through the cooperation of the second driving pulley, the second synchronous belt and the second driven pulley, so that the gripping component moves back to the feeding tray. Then the feeding tray moves upward to send the next layer of material trays to the gripping component, and the above process is repeated.

[0008] This hopper achieves rapid movement of the mounting base through the cooperation of a second driving pulley, a second synchronous belt, and a second driven pulley. This allows the gripping assembly to quickly move the material tray from one bracket to another, improving the tray handling efficiency. Furthermore, a rod-shaped mating part is provided on the side of the pulley seat facing away from support one. This mating part passes through support two, and the pulley seat and support two are fixed circumferentially along the mating part. An adjusting nut is threaded onto the mating part, and the adjusting nut abuts against the side of support two facing away from support one. When the adjusting nut is rotated, it drives the pulley seat to move axially along the mating part, thereby moving the second driven pulley away from the second driving pulley. This allows the second synchronous belt to be tensioned according to actual conditions, ensuring transmission reliability.

[0009] In the aforementioned silo, the second support is provided with a through hole along the length of the top plate, the mating part passes through the through hole, the through hole has two oppositely arranged anti-rotation surfaces, the outer side of the mating part has two parallel mating surfaces, and the two mating surfaces abut against the two anti-rotation surfaces respectively.

[0010] By having two mating surfaces abut against two anti-rotation surfaces respectively, the rod-shaped mating part is circumferentially fixed to the second support. In this way, when the adjusting nut is rotated, the pulley seat can be driven away from the first support to tighten the second synchronous belt, thereby ensuring the structural reliability of the gripping component to move quickly into place using the synchronous belt mechanism composed of the second driving pulley, the second driven pulley and the second synchronous belt.

[0011] In one of the aforementioned hoppers, the mating part is further threadedly connected to a locking nut, which abuts against the side of the adjusting nut facing away from the support.

[0012] In the adjusted state, the adjusting nut abuts against the side of support two facing away from support one, while the locking nut abuts against the other side of the adjusting nut. This locks the adjusting nut and the rod-shaped mating part in place, preventing uncontrolled rotation of the adjusting nut during operation. When the second timing belt needs to be tightened after a period of time, simply loosen the locking nut first, and then rotate the adjusting nut.

[0013] In one of the aforementioned hoppers, the through hole is waist-shaped along the vertical direction, and two anti-rotation surfaces are distributed along the front and back, with the anti-rotation surfaces located in the middle position of the through hole along the vertical direction. The mating part can move up and down along the through hole.

[0014] The through hole is waist-shaped in the vertical direction, and the two anti-rotation surfaces are distributed in the front-to-back direction and are located in the middle of the through hole in the vertical direction. The mating part can move up and down along the through hole. This setting allows the entire pulley seat to move in the vertical direction to ensure that the height of the second driving pulley and the second driven pulley can be as level as possible, thereby ensuring that the second synchronous belt can run smoothly and avoiding jamming of the gripping component.

[0015] In the aforementioned hopper, the pulley seat includes a U-shaped block body with its opening facing the support one. A mating part is fixedly connected to the side of the body facing away from the support one. The support two has four mating holes along the length of the top plate. The four mating holes are distributed around the through hole, with two mating holes having the same height and the remaining two mating holes having the same height. The support two has four leveling bolts. The shank of each leveling bolt passes through the mating hole and is threaded into the body. The head of each leveling bolt abuts against the side of the support two facing away from the support one. There is a movable gap between the leveling bolt and the hole wall of the corresponding mating hole.

[0016] After the shank of each leveling bolt passes through its respective mating hole and is threaded into the main body, the threaded connection positions of each leveling bolt and the main body are precisely at the four vertices on the side of the main body facing away from the support. Based on the oblong through-hole design, there is a movable clearance between the leveling bolt and the corresponding mating hole wall. This allows the main body to be leveled by rotating the corresponding leveling bolt when unevenness occurs, ensuring the reliable operation of the second synchronous belt.

[0017] In one of the aforementioned silos, the top plate is provided with a long strip-shaped clearance groove along its length direction. The clearance groove is arranged vertically. The mounting base includes a base body and a connecting plate fixedly connected to the bottom of the base body. The connecting plate passes downward through the clearance groove. A pressure plate is fixedly connected to one side of the connecting plate. A second synchronous belt is clamped and fixed between the connecting plate and the pressure plate.

[0018] After the connecting plate is fixed to one side of the connecting plate, the second synchronous belt is clamped and fixed between the connecting plate and the pressure plate. Thus, when the second synchronous belt is running, it will drive the mounting base to move, so as to realize the switching of the gripping component position.

[0019] Compared with existing technologies, this silo has the following advantages:

[0020] 1. The rapid movement of the mounting base is achieved through the cooperation of the second driving pulley, the second synchronous belt and the second driven pulley, which enables the gripping component to quickly move the tray from one bracket to another, thereby improving the tray handling efficiency.

[0021] 2. A rod-shaped mating part is provided on the side of the pulley seat facing away from the support one. The mating part passes through the support two. The pulley seat and the support two are fixed together along the circumference of the mating part. An adjusting nut is threadedly connected to the mating part. The adjusting nut abuts against the side of the support two facing away from the support one. When the adjusting nut is rotated, the pulley seat will be driven to move along the axial direction of the mating part, so that the position of the second driven pulley can be moved away from the second driving pulley. This allows the second synchronous belt to be tightened according to the actual situation, ensuring the reliability of the transmission.

[0022] 3. Four mating holes are provided along the length of the top plate on the second support. The four mating holes are distributed around the through hole. The rods of the four leveling bolts pass through the four mating holes and are threaded into the main body of the pulley seat. In this way, based on the through hole being a waist-shaped hole, there is a movable gap between the leveling bolt and the hole wall of the corresponding mating hole. Therefore, when there is a height difference in the main body of the pulley seat, the main body can be leveled by rotating the corresponding leveling bolt to ensure the reliability of the second synchronous belt operation. Attached Figure Description

[0023] Figure 1 This is a 3D schematic diagram of the material silo.

[0024] Figure 2 This is a rear view of the silo.

[0025] Figure 3 This is a three-dimensional schematic diagram of the material silo from another angle.

[0026] Figure 4 This is a schematic diagram of the top panel.

[0027] Figure 5 This is a schematic diagram of the connection between support two and pulley seat.

[0028] Figure 6 This is a schematic diagram of the side of support two facing away from support one.

[0029] Figure 7 yes Figure 6 Sectional view along the AA direction.

[0030] Figure 8 yes Figure 6 Sectional view along the BB direction.

[0031] Figure 9 This is an exploded view of the relationship between the pulley seat and support two.

[0032] In the diagram, 1. Frame; 1a. Top plate; 1a1. Clearance groove; 1b. Guide groove; 2. Bracket; 2a. Guide block; 3. Mounting base; 3a. Base body; 3b. Connecting plate; 4. Gripping assembly; 4a. Parallel opening and closing type pneumatic gripper cylinder; 4b. Gripping arm; 4c. Support block; 5. Lead screw; 6. Bearing seat; 7. Nut block; 8. Bracket; 9. Lifting motor; 10. First driving pulley; 11. First driven pulley; 12. First synchronous belt; 13. First guide rail 14. Second guide rail; 15. Support 1; 16. Support 2; 16a. Through hole; 16a1. Anti-rotation surface; 16b. Mating hole; 17. Drive motor; 18. Second driving pulley; 19. Pulley seat; 19a. Main body; 19b. Mating part; 19b1. Mating surface; 20. Second driven pulley; 21. Second synchronous belt; 22. Pressure plate; 23. Adjusting nut; 24. Fastening nut; 25. Locking nut; 26. Leveling bolt; 27. Material tray. Detailed Implementation

[0033] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0034] like Figure 1 , Figure 2 and Figure 3As shown, a hopper includes a frame 1 with a top plate 1a and two brackets 2 located on the front side of the frame 1. The top plate 1a is rectangular, and the two brackets 2 are arranged side by side along the length of the top plate 1a. Both brackets 2 can move up and down. A mounting base 3 is connected to the top plate 1a and can move along the length of the top plate 1a. A gripping component 4 is fixed on the mounting base 3. The frame 1 has two guide grooves 1b on its front side. The guide grooves 1b are strip-shaped in the vertical direction and are parallel to each other. The rear sides of the two brackets 2 each have guide blocks 2a. The two guide blocks 2a pass through the two guide grooves 1b and into the frame 1. The frame 1 has two parallel lead screws 5. The frame 1 is fixedly connected to two bearing seats 6. The upper ends of the two lead screws 5 are located in the two bearing seats 6 respectively, and bearings are provided between the lead screws 5 and the bearing seats 6. The parts of the two guide blocks 2a located in the frame 1 are fixedly connected to nut blocks 7. The two nut blocks 7 are respectively connected to the two lead screws 5 (the combination of nut blocks 7 and lead screws 5 is the common ball screw mechanism in the present world). Two brackets 8 are fixedly attached to the lower end of the frame 1, below the two guide blocks 2a. Each bracket 8 is fixedly connected to a lifting motor 9. The lower ends of the shafts of the two lifting motors 9 extend into their respective brackets 8 and are fixedly connected to a first driving pulley 10. The lower ends of the two lead screws 5 extend into the two brackets 8 respectively and are fixedly connected to a first driven pulley 11. The first driving pulley 10 and the first driven pulley 11 are engaged by a first synchronous belt 12. To ensure the stability of the bracket 2's vertical movement, a first guide rail 13 is fixedly attached vertically to the front side of the frame 1. The bracket 2 is connected to the first guide rail 13 via a slider. A second guide rail 14 is fixedly attached to the upper surface of the mounting plate along its length. The mounting base 3 is slidably connected to the second guide rail 14 via a slider. The gripping assembly 4 includes a parallel opening and closing type pneumatic gripper cylinder 4a and two gripping arms 4b. The rear ends of the two gripping arms 4b are respectively fixedly connected to two pneumatic grippers in the parallel opening and closing type pneumatic gripper cylinder 4a. The front ends of the two gripping arms 4b extend out of the front side of the frame 1. Support blocks 4c are fixed to the bottom of each of the two gripping arms 4b. The support blocks 4c of the two gripping arms 4b are arranged opposite to each other, and each support block 4c protrudes from the side of the gripping arm 4b facing the other gripping arm 4b.

[0035] like Figure 1 , Figure 4 and Figure 5As shown, support 15 and support 26 are fixedly connected to the bottom of both ends of the top plate 1a along its length. A drive motor 17 is fixedly connected to the bottom of support 15. The upper end of the shaft of drive motor 17 is located inside support 15 and is fixedly connected to a second drive pulley 18. A pulley seat 19 is connected to the side of support 26 facing support 15. A second driven pulley 20 is rotatably connected inside pulley seat 19 through a positioning shaft. The second drive pulley 18 and the second driven pulley 20 cooperate through a second synchronous belt 21. The second synchronous belt 21 is fixedly connected to the mounting base 3. The top plate 1a has a long strip-shaped relief groove 1a1 along its length direction. The relief groove 1a1 is vertically connected. The mounting base 3 includes a base body 3a and a connecting plate 3b fixedly connected to the bottom of the base body 3a. The base body 3a cooperates with the second guide rail 14. The connecting plate 3b passes downward through the relief groove 1a1. A pressure plate 22 is fixedly connected to one side of the connecting plate 3b. The second synchronous belt 21 is clamped and fixed between the connecting plate 3b and the pressure plate 22.

[0036] Furthermore, such as Figure 5 , Figure 6 , Figure 7 , Figure 8 and Figure 9As shown, the pulley seat 19 has a rod-shaped mating part 19b on the side facing away from the support 15. The mating part 19b passes through the support 16, and the pulley seat 19 and the support 16 are fixed together along the circumference of the mating part 19b. The mating part 19b is threadedly connected to an adjusting nut 23, which abuts against the side of the support 16 facing away from the support 15. The support 16 has a through hole 16a along the length of its top surface. The mating part 19b passes through the through hole 16a. The through hole 16a has two opposing anti-rotation surfaces 16a1. The outer side of the mating part 19b has two parallel mating surfaces 19b1, which abut against the two anti-rotation surfaces 16a1 respectively. The second support 16 includes a U-shaped block body 19a with its opening facing the first support 15. One end of a mating part 19b is threaded into the body 19a. A fastening nut 24 is also threaded onto the mating part 19b, abutting against the body 19a. A locking nut 25 is also threaded onto the mating part 19b, abutting against the side of the adjusting nut 23 facing away from the first support 15. This means that the fastening nut 24, the adjusting nut 23, and the locking nut 25 are sequentially connected to the mating part 19b. Support 2 16 has four mating holes 16b along the length of the top plate 1a. The four mating holes 16b are distributed around the through hole 16a. Two of the mating holes 16b are at the same height, and the remaining two are at the same height. Support 2 16 has four leveling bolts 26. The rod of each leveling bolt 26 passes through the mating hole 16b and is threaded into the body 19a of the pulley seat 19. The head of each leveling bolt 26 abuts against the side of support 2 16 facing away from support 1 15. There is a movable gap between the leveling bolt 26 and the hole wall of the corresponding mating hole 16b. The through hole 16a is waist-shaped in the vertical direction. Two anti-rotation surfaces 16a1 are distributed in the front and back direction, and the anti-rotation surfaces 16a1 are located in the middle position of the through hole 16a in the vertical direction. The mating part 19b can move up and down along the through hole 16a.

[0037] In operation, one bracket 2 is at its lowest position, and the other bracket 2 is at its highest position (slightly lower than the height of the gripping assembly 4). Trays 27 are stacked sequentially on the lowest bracket 2 until the uppermost tray 27 is positioned between the two gripping arms 4b of the gripping assembly 4. For ease of understanding, the lowest bracket 2 is designated as the loading bracket 2, and the highest bracket 2 as the unloading bracket 2. The robotic arm sequentially picks up materials from the uppermost tray 27 and delivers them to the processing equipment for processing. The processed materials are then sequentially returned to the tray 27. Next, the two gripping arms 4b of the gripping assembly 4 bring together to grasp the tray 27. Subsequently, the shaft of the drive motor 17 rotates, and through the cooperation of the second drive pulley 18, the second synchronous belt 21, and the second driven pulley 20, drives the mounting base 3 to slide, causing the gripping component 4 to move the material tray 27 to the unloading bracket 2. Then, the gripping component 4 releases the material tray 27 and places it on the bracket 2. Finally, the shaft of the drive motor 17 rotates in the opposite direction, and through the cooperation of the second drive pulley 18, the second synchronous belt 21, and the second driven pulley 20, drives the mounting base 3 to reset and slide, causing the gripping component 4 to move back to the loading tray. Then, the loading tray moves upward to send the next layer of material trays 27 to the gripping component 4, and the above process is repeated.

[0038] The pulley seat 19 has a rod-shaped mating part 19b on the side facing away from the support 15. The mating part 19b passes through the support 16. The pulley seat 19 and the support 16 are fixed together along the circumference of the mating part 19b. The mating part 19b is threadedly connected to an adjusting nut 23. The adjusting nut 23 abuts against the side of the support 16 facing away from the support 15. When the adjusting nut 23 is rotated, the pulley seat 19 will be driven to move along the axial direction of the mating part 19b, so that the position of the second driven pulley 20 can be moved away from the second driving pulley 18. This allows the second synchronous belt 21 to be tightened according to the actual situation, ensuring the reliability of the transmission. Furthermore, the through hole 16a is waist-shaped in the vertical direction, and the two anti-rotation surfaces 16a1 are distributed in the front-to-back direction and the anti-rotation surfaces 16a1 are located in the middle of the through hole 16a in the vertical direction. The mating part 19b can move up and down along the through hole 16a. This arrangement allows the entire pulley seat 19 to move in the vertical direction to ensure that the height of the second driving pulley 18 and the second driven pulley 20 can be as level as possible, thereby ensuring that the second synchronous belt 21 can operate smoothly and avoiding jamming when the mounting seat 3 moves.

[0039] The specific embodiments described herein are merely illustrative examples illustrating the spirit of this utility model. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of this utility model or exceeding the scope defined by the appended claims.

Claims

1. A hopper comprising a frame (1) having a top plate (1a), two brackets (2) arranged side-by-side along the length of the top plate (1a) on the front side of the frame (1), a mounting base (3) connected to and movable along the top plate (1a), and a gripping assembly (4) fixed to the mounting base (3), wherein both brackets (2) are movable vertically, characterized in that, The top plate (1a) is fixedly connected to the bottom of its two ends along its length direction with a support first (15) and a support second (16), respectively. A drive motor (17) is fixedly connected to the bottom of the support first (15). The shaft of the drive motor (17) extends into the support first (15) and is fixedly connected to a second drive pulley (18). A pulley seat (19) is connected to the side of the support second (16) facing the support first (15). A second driven pulley (20) is provided in the pulley seat (19). The second drive pulley (18) and the second driven pulley (20) are connected to each other. 0) It is connected to the second synchronous belt (21) and fixedly connected to the mounting base (3). The pulley seat (19) has a rod-shaped mating part (19b) on the side facing away from the support (15). The mating part (19b) passes through the support (26). The pulley seat (19) and the support (26) are fixed together along the circumference of the mating part (19b). The mating part (19b) is threaded with an adjusting nut (23). The adjusting nut (23) abuts against the side of the support (26) facing away from the support (15).

2. A silo according to claim 1, characterized in that, The second support (16) is provided with a through hole (16a) along the length of the top plate (1a). The mating part (19b) passes through the through hole (16a). The through hole (16a) has two opposing anti-rotation surfaces (16a1). The outer side of the mating part (19b) has two parallel mating surfaces (19b1). The two mating surfaces (19b1) abut against the two anti-rotation surfaces (16a1) respectively.

3. A silo according to claim 1 or 2, characterized in that, The mating part (19b) is also threadedly connected to a locking nut (25), which abuts against the side of the adjusting nut (23) facing away from the support (15).

4. A silo according to claim 2, characterized in that, The through hole (16a) is waist-shaped in the vertical direction, and the two anti-rotation surfaces (16a1) are distributed in the front and back directions and the anti-rotation surface (16a1) is located in the middle position of the through hole (16a) in the vertical direction. The mating part (19b) can move up and down along the through hole (16a).

5. A silo according to claim 4, characterized in that, The pulley seat (19) includes a U-shaped block body (19a) with its opening facing the support (15). The mating part (19b) is fixed to the side of the body (19a) facing away from the support (15). The support (2) has four mating holes (16b) along the length of the top plate (1a). The four mating holes (16b) are distributed around the through hole (16a). Two of the mating holes (16b) are at the same height, and the remaining two mating holes (16b) are at the same height. The support (2) has four leveling bolts (26). The rod of each leveling bolt (26) passes through each mating hole (16b) and is threaded into the body (19a). The head of each leveling bolt (26) abuts against the side of the support (2) facing away from the support (15). There is a movable gap between the leveling bolt (26) and the hole wall of the corresponding mating hole (16b).

6. A silo according to claim 1 or 2, characterized in that, The top plate (1a) is provided with a long strip-shaped relief groove (1a1) along its length direction. The relief groove (1a1) is provided vertically. The mounting base (3) includes a base body (3a) and a connecting plate (3b) fixedly connected to the bottom of the base body (3a). The connecting plate (3b) passes downward through the relief groove (1a1). A pressure plate (22) is fixedly connected to one side of the connecting plate (3b). The second synchronous belt (21) is clamped and fixed between the connecting plate (3b) and the pressure plate (22).

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