Limit switch transmission device

Abstract

The utility model discloses a limit switch transmission device, which relates to the technical field of transmission devices and comprises a mounting frame and a rotating assembly. A transmission assembly and a blocking assembly are mounted in the mounting frame, a power-off assembly is mounted at the front end of the lower side of the mounting frame, and the blocking assembly is matched with the power-off assembly; the rotating assembly comprises a first motor, a rotating shaft and gear rings, the rotating shaft is rotationally connected to the left end of the interior of the mounting frame, the first motor is mounted on the rear side of the mounting frame, an output shaft of the first motor is fixed to the rear end of the rotating shaft, and the two corresponding gear rings are fixed to the circumferential surface of the rotating shaft; the two gear rings are connected with the blocking assembly, the input end of the first motor is electrically connected with the output end of an external PLC, conveying can be automatically stopped during stacking, meanwhile, materials can be limited, and stacking is facilitated.

Description

Technical Field

[0001] This utility model relates to the field of transmission device technology, specifically a limit switch transmission device. Background Technology

[0002] Modern packaging conveyor systems utilize robotic arms, belt conveyors, and roller conveyors to construct automated conveying networks, enabling efficient material flow between production workshops, warehouses, and packaging areas. This system employs a modular conveyor chain design, with each unit seamlessly connected to form a closed-loop conveyor line. This, combined with intelligent palletizing devices, completes the automated transfer and stacking of materials. The conveyor line is controlled by a PLC system to coordinate the operation of each workstation, ensuring precise delivery of materials to designated locations.

[0003] Current packaging lines suffer from significant efficiency bottlenecks in the palletizing stage: the system lacks intelligent automatic palletizing control, requiring manual pausing of the entire conveyor line each time a palletizing operation is performed, with restarts only after palletizing is complete. This semi-automatic operation mode reduces production line efficiency by more than 30%, and frequent start-stop cycles accelerate equipment wear and tear. Furthermore, manual intervention suffers from response delays, easily leading to material accumulation or positioning deviations, affecting packaging quality and increasing the workload of operators. Therefore, we propose a limit switch transmission device. Utility Model Content

[0004] The technical problem to be solved by this utility model is to overcome the existing defects and provide a limit switch transmission device that can automatically stop the conveying during palletizing and limit the material, which can facilitate palletizing and effectively solve the problems in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a limit switch transmission device, comprising a mounting frame and a rotating assembly;

[0006] Mounting frame: The mounting frame contains a transmission component and a blocking component. A power-off component is installed at the front end of the lower side of the mounting frame. The blocking component and the power-off component cooperate with each other.

[0007] Rotating assembly: includes a first motor, a rotating shaft, and gear rings. The rotating shaft is rotatably connected to the left end inside the mounting frame. The first motor is mounted on the rear side of the mounting frame. The output shaft of the first motor is fixed to the rear end of the rotating shaft. Two corresponding gear rings are fixed on the circumferential surface of the rotating shaft. The two gear rings are connected to the blocking assembly. The input end of the first motor is electrically connected to the output end of an external PLC controller. The rotating assembly drives the two blocking plates to move.

[0008] Furthermore, the blocking assembly includes a blocking plate, a rack, a limiting strip, and a limiting groove. Two corresponding blocking plates are arranged inside the mounting frame, and the rotating shaft is located between the two blocking plates. Two corresponding racks are fixed on the side of the blocking plate, and the four racks mesh with the front and rear gear rings respectively. Two corresponding limiting strips are fixed on the front and rear sides of the blocking plate. Four corresponding limiting grooves are opened on the front and rear sides inside the mounting frame, and the limiting strips are slidably connected inside the limiting grooves. By setting the blocking assembly, the conveyed items are blocked, facilitating the external robotic arm to stack the items.

[0009] Furthermore, the transmission assembly includes a second motor, a conveyor shaft, a sprocket, and a chain. The second motor is installed at the right end of the rear side of the mounting frame. The front side of the mounting frame has evenly distributed rotating holes. The conveyor shaft is rotatably connected inside the rotating holes. A sprocket is fixed at the front end of the conveyor shaft. Two adjacent sprockets are connected by a chain. The output shaft of the second motor is fixed at the rear end of the right-side conveyor shaft. The transmission assembly is used to transport items.

[0010] Furthermore, the power-off assembly includes a connecting frame, a fixing frame, a limit switch, and a pressure sensor. The connecting frame is fixed to the lower left end of the right-side blocking plate, and the fixing frame is fixed to the front end of the lower side of the mounting frame. The limit switch is installed inside the fixing frame. The front end of the connecting frame is located above the inside of the fixing frame. A mounting hole is opened on the front side of the connecting frame, and a pressure sensor is installed inside the mounting hole. The pressure sensor corresponds to the limit switch. The input end of the limit switch is electrically connected to the output end of an external PLC controller, and the output end of the limit switch is electrically connected to the input end of the second motor. The pressure sensor is bidirectionally electrically connected to the external PLC controller. By setting up the power-off assembly, it is convenient to cut off the power to the second motor during palletizing.

[0011] Furthermore, two corresponding mounting slots are opened on the front and rear sides inside the mounting frame. The two mounting slots are located on the right side of the two baffles. An infrared transmitter is installed inside the rear mounting slot, and an infrared receiver is installed inside the front mounting slot. The input end of the infrared transmitter is electrically connected to the output end of an external PLC controller. The infrared receiver is bidirectionally electrically connected to the external PLC controller. By setting the infrared receiver and infrared transmitter, the position of the item is sensed. When the item to be stacked moves between the infrared receiver and infrared transmitter, the external PLC controller will automatically control the first motor to work.

[0012] Furthermore, four corresponding support legs are fixed to the lower side of the mounting frame, and a base plate is fixed to the lower side of the four support legs. The mounting frame is supported by the support legs and the base plate.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows: This limit switch transmission device has the following advantages:

[0014] By working in concert with the infrared detection device and the PLC controller, the material position is monitored in real time and the limit mechanism is automatically triggered. When the material reaches the predetermined position, the system automatically controls the transmission device to stop and simultaneously completes the limit action, realizing the intelligent linkage between precise material positioning and transmission start and stop. This significantly improves the automation level and positioning reliability of palletizing operations, and effectively enhances the efficiency compared with traditional manual operation. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the front structure of this utility model;

[0016] Figure 2 This is a schematic diagram of the rotating component structure of this utility model;

[0017] Figure 3 This is a schematic diagram of the blocking component structure of this utility model;

[0018] Figure 4 This is a schematic diagram of the rear structure of this utility model.

[0019] In the diagram: 1. Mounting frame; 2. Rotating assembly; 21. First motor; 22. Rotating shaft; 23. Gear ring; 3. Blocking assembly; 31. Blocking plate; 32. Rack; 33. Limiting strip; 34. Limiting groove; 4. Transmission assembly; 41. Second motor; 42. Conveying shaft; 43. Sprocket; 44. Chain; 5. Power-off assembly; 51. Connecting frame; 52. Fixing frame; 53. Limit switch; 54. Pressure sensor; 6. Infrared transmitter; 7. Infrared receiver; 8. Support leg; 9. Base plate. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] Please see Figure 1-4 This embodiment provides a technical solution: a limit switch transmission device, including a mounting frame 1 and a rotating assembly 2;

[0022] Mounting frame 1: Internally, a transmission component 4 and a blocking component 3 are installed. A power-off component 5 is installed at the lower front end of the mounting frame 1. The blocking component 3 and the power-off component 5 cooperate with each other. The blocking component 3 includes a blocking plate 31, a rack 32, a limiting strip 33, and a limiting groove 34. Two corresponding blocking plates 31 are provided inside the mounting frame 1. The rotating shaft 22 is located between the two blocking plates 31. Two corresponding racks 32 are fixed on the side of the blocking plate 31. The four racks 32 mesh with the front and rear gear rings 23 respectively. The mounting frame 1 has two corresponding limiting strips 33 fixed on its front and rear sides. Four corresponding limiting grooves 34 are provided on the front and rear sides inside the mounting frame 1. The limiting strips 33 are slidably connected inside the limiting grooves 34. The transmission assembly 4 includes a second motor 41, a conveying shaft 42, sprockets 43, and a chain 44. The second motor 41 is installed at the right rear end of the mounting frame 1. The front side of the mounting frame 1 has evenly distributed rotating holes. The conveying shaft 42 is rotatably connected inside the rotating holes. A sprocket 43 is fixed to the front end of the conveying shaft 42. Two adjacent sprockets 43... The output shaft of the second motor 41 is fixed to the rear end of the right conveyor shaft 42 via chain 44. The power-off assembly 5 includes a connecting frame 51, a fixing frame 52, a limit switch 53, and a pressure sensor 54. The connecting frame 51 is fixed to the lower left end of the right-side blocking plate 31, and the fixing frame 52 is fixed to the front end of the lower side of the mounting frame 1. The limit switch 53 is installed inside the fixing frame 52. The front end of the connecting frame 51 is located above the inside of the fixing frame 52. The front side of the connecting frame 51 has a mounting hole, and the pressure sensor 54 is installed inside the mounting hole. The pressure sensor 54 corresponds to the limit switch 53. The input end of the limit switch 53 is electrically connected to the output end of the external PLC controller, and the output end of the limit switch 53 is electrically connected to the input end of the second motor 41. The pressure sensor 54 is bidirectionally electrically connected to the external PLC controller. By setting the power-off assembly 5, it is convenient to cut off the power to the second motor 41 during palletizing. By setting the transmission assembly 4, the items are conveyed. By setting the blocking assembly 3, the conveyed items are blocked, which is convenient for the external robotic arm to palletize the items.

[0023] Rotating assembly 2 includes a first motor 21, a rotating shaft 22, and a gear ring 23. The rotating shaft 22 is rotatably connected to the left end inside the mounting frame 1. The first motor 21 is mounted on the rear side of the mounting frame 1. The output shaft of the first motor 21 is fixed to the rear end of the rotating shaft 22. Two corresponding gear rings 23 are fixed on the circumferential surface of the rotating shaft 22. The two gear rings 23 are connected to the blocking assembly 3. The input end of the first motor 21 is electrically connected to the output end of an external PLC controller. By setting the rotating assembly 2, the two blocking plates 31 are moved.

[0024] The mounting frame 1 has two corresponding mounting slots on its front and rear sides. The two mounting slots are located on the right side of the two blocking plates 31. An infrared transmitter 6 is installed inside the rear mounting slot, and an infrared receiver 7 is installed inside the front mounting slot. The input terminal of the infrared transmitter 6 is electrically connected to the output terminal of the external PLC controller. The infrared receiver 7 is bidirectionally electrically connected to the external PLC controller. The position of the items is sensed by setting the infrared receiver 7 and the infrared transmitter 6. When the items to be stacked move between the infrared receiver 7 and the infrared transmitter 6, the external PLC controller will automatically control the first motor 21 to work.

[0025] The mounting frame 1 is fixed with four corresponding support legs 8 on its lower side, and a base plate 9 is fixed to the lower side of the four support legs 8. The mounting frame 1 is supported by the support legs 8 and the base plate 9.

[0026] The working principle of the limit switch transmission device provided by this utility model is as follows: When the material is driven to the set station by the chain 44 and sprocket 43 of the transmission component 4, the infrared transmitter 6 and the infrared receiver 7 detect the arrival signal of the material and feed it back to the external PLC controller. The external PLC controller then starts the first motor 21, drives the rotating shaft 22 to rotate and drives the gear ring 23 to rotate synchronously. Through the meshing transmission between the gear ring 23 and the rack 32, the two sets of blocking plates 31 move synchronously towards each other along the guide trajectory of the limiting groove 34 to form a physical limiting barrier. During the closing process of the blocking plate 31, the connecting frame 5 connected to it... 1. Synchronous displacement contacts the limit switch 55. After contact, the limit switch 55 automatically de-energizes, cutting off the power to the second motor 41 and stopping the conveyor shaft 42. At the same time, the pressure sensor 54 will also send the contact signal to the external PLC controller. At this time, the external PLC controller automatically shuts down the first motor 21. The material is then precisely confined between the baffle plate 31 and the infrared detection station, waiting for the robotic arm to perform the palletizing operation. After the palletizing is completed, the first motor 21 rotates in reverse to reset the baffle plate 31, the pressure sensor 54 is deactivated, and the transmission component 4 restarts, realizing continuous automated conveying and palletizing operation cycle.

[0027] It is worth noting that the external PLC controller disclosed in the above embodiments is specifically a Siemens S7-200. The first motor 21, the second motor 41, the limit switch 53, the infrared transmitter 6, the infrared receiver 7, and the pressure sensor 54 can be freely configured according to the actual application scenario. The external PLC controller controls the operation of the first motor 21, the second motor 41, the limit switch 53, and the infrared transmitter using methods commonly used in the prior art.

[0028] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A limit switch transmission device, characterized in that: Includes a mounting frame (1) and a rotating assembly (2); Mounting frame (1): A transmission component (4) and a blocking component (3) are installed inside. A power-off component (5) is installed at the front end of the lower side of the mounting frame (1). The blocking component (3) and the power-off component (5) cooperate with each other. Rotating assembly (2): includes a first motor (21), a rotating shaft (22) and a gear ring (23). The rotating shaft (22) is rotatably connected to the left end inside the mounting frame (1). The first motor (21) is installed on the rear side of the mounting frame (1). The output shaft of the first motor (21) is fixed to the rear end of the rotating shaft (22). Two corresponding gear rings (23) are fixed on the circumferential surface of the rotating shaft (22). The two gear rings (23) are connected to the blocking assembly (3). The input end of the first motor (21) is electrically connected to the output end of an external PLC controller.

2. The limit switch transmission device according to claim 1, characterized in that: The blocking assembly (3) includes a blocking plate (31), a rack (32), a limiting strip (33), and a limiting groove (34). The mounting frame (1) has two corresponding blocking plates (31) inside. The rotating shaft (22) is located between the two blocking plates (31). Two corresponding racks (32) are fixed on the side of the blocking plate (31). The four racks (32) mesh with the two gear rings (23) in front and behind respectively. Two corresponding limiting strips (33) are fixed on the front and back sides of the blocking plate (31). Four corresponding limiting grooves (34) are opened on the front and back sides inside the mounting frame (1). The limiting strips (33) are slidably connected inside the limiting grooves (34).

3. The limit switch transmission device according to claim 1, characterized in that: The transmission component (4) includes a second motor (41), a conveying shaft (42), a sprocket (43), and a chain (44). The second motor (41) is installed on the right end of the rear side of the mounting frame (1). The front side of the mounting frame (1) is provided with evenly distributed rotating holes. The conveying shaft (42) is rotatably connected inside the rotating holes. The front end of the conveying shaft (42) is fixed with a sprocket (43). Two adjacent sprockets (43) are connected by a chain (44). The output shaft of the second motor (41) is fixed at the rear end of the conveying shaft (42) on the right side.

4. The limit switch transmission device according to claim 3, characterized in that: The power-off assembly (5) includes a connecting frame (51), a fixing frame (52), a limit switch (53), and a pressure sensor (54). The connecting frame (51) is fixed to the lower left end of the right-side blocking plate (31). The fixing frame (52) is fixed to the front end of the lower side of the mounting frame (1). The limit switch (53) is installed inside the fixing frame (52). The front end of the connecting frame (51) is located above the inside of the fixing frame (52). The front side of the connecting frame (51) has an installation hole. The pressure sensor (54) is installed inside the installation hole. The pressure sensor (54) corresponds to the limit switch (53). The input end of the limit switch (53) is electrically connected to the output end of an external PLC controller. The output end of the limit switch (53) is electrically connected to the input end of the second motor (41). The pressure sensor (54) is bidirectionally electrically connected to the external PLC controller.

5. A limit switch transmission device according to claim 2, characterized in that: The mounting frame (1) has two corresponding mounting slots on the front and back sides. The two mounting slots are located on the right side of the two blocking plates (31). An infrared transmitter (6) is installed inside the mounting slot on the rear side, and an infrared receiver (7) is installed inside the mounting slot on the front side. The input end of the infrared transmitter (6) is electrically connected to the output end of the external PLC controller, and the infrared receiver (7) is bidirectionally electrically connected to the external PLC controller.

6. The limit switch transmission device according to claim 1, characterized in that: The mounting frame (1) has four corresponding legs (8) fixed to its lower side, and a base plate (9) is fixed to the lower side of the four legs (8).

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