Double-head feeding system

Abstract

The utility model provides a double-end feeding system which comprises two guide rails which are symmetrically arranged on the two sides of blanking valve ports and are parallel to a connecting line of the two blanking valve ports. The moving trolley is movably arranged on the guide rail; the feeding device is fixedly arranged on the moving trolley, and two discharging ports of the feeding device correspond to the two discharging valve ports; and the weighing sensor is arranged between the moving trolley and the feeding device and is used for detecting the weight change of the feeding device. Through the design of the two discharging ports of the feeding device and the design of the guide rail and the moving trolley, materials can be provided for two downstream devices at the same time when the bin is full at a time, the multi-task requirement is met, the device investment and manual intervention are reduced, the overall efficiency of material throwing is improved, and the production cost is reduced; meanwhile, a weighing sensor is integrated, materials can be accurately metered according to the requirements of downstream equipment, it is ensured that the precision of the feeding amount is within the allowable error range, and the quantitative control precision in the production process is improved.

Description

Technical Field

[0001] This utility model relates to the field of feeding equipment technology, specifically to a dual-head feeding system. Background Technology

[0002] In China's manufacturing and processing sector, especially in the food, chemical, and pharmaceutical industries, accurate material feeding and weighing are crucial aspects of the production process. The main function is to quantitatively deliver materials to downstream equipment, such as mixers, packaging machines, or reaction vessels, via screws to meet the automation requirements of the production line. Most existing screw feeding equipment uses a simple screw feeding method, which, while achieving basic material conveying, cannot meet the requirements of high-precision metering, automated control, and complex production environments. In particular, traditional equipment generally suffers from the following problems regarding the accuracy of material feeding, equipment stability, and environmental adaptability:

[0003] 1. Low quantitative feeding accuracy: Most feeding equipment on the market currently relies on a single screw feeder. During the material feeding process, factors such as material density, flowability, moisture content, and particle size all affect the feeding amount, leading to fluctuations in the feeding quantity. This insufficient quantitative control often affects the operational stability of downstream equipment, easily resulting in inaccurate packaging, waste, or insufficient packaging, thus impacting production efficiency and product quality.

[0004] 2. Low level of automation: Existing feeding systems are mostly fixed structures, and the feeding process cannot be automatically adjusted. Manual intervention or frequent adjustments are often required to adapt to different production needs. This is especially true in scenarios requiring frequent changes in packaging specifications or adjustments to material feed rates, where the flexibility and automation of traditional equipment are clearly insufficient. This not only increases labor costs but also affects production efficiency.

[0005] 3. Difficulty in meeting multi-tasking requirements: Because existing screw feeders generally only have a single feeding port and the feeding process relies on a single device, multiple devices are often required to feed materials to multiple downstream devices simultaneously. This not only increases equipment investment but also reduces overall production efficiency.

[0006] In summary, existing conventional screw feeders have several defects and shortcomings, such as inaccurate metering, low automation, and low production efficiency. Utility Model Content

[0007] The purpose of this invention is to overcome the shortcomings of the prior art and provide a dual-head feeding system that can solve the problems of inaccurate quantitative feeding, low automation, and low production efficiency of existing screw feeders.

[0008] To achieve the above and other objectives, this utility model is implemented through the following technical solution: As a first aspect, this utility model proposes a dual-head feeding system, including two guide rails symmetrically arranged on both sides of the discharge valve port, parallel to the line connecting the two discharge valve ports; a moving trolley, movably mounted on the guide rails; a feeding device, fixed on the moving trolley, with its two discharge ports corresponding to the two discharge valve ports; and a weighing sensor, disposed between the moving trolley and the feeding device, for detecting changes in the weight of the feeding device.

[0009] In one embodiment, the mobile vehicle includes a frame, drive wheels, and a first drive device; the first drive device is mounted on the frame, driven by a control program, and linked with the drive wheels; the drive wheels are disposed on the guide rail, driven by the first drive device, and move the frame on the guide rail.

[0010] In one embodiment, guide wheels are provided at the four bottom corners of the frame, and the guide wheels are used to assist the frame in moving on the guide rail.

[0011] In one embodiment, the feeding device includes a support, a hopper, a screw discharge pipe, and a second drive device; the hopper is fixedly installed on the support; the screw discharge pipe is located at the bottom of the hopper and is arranged parallel to the guide rail, with a first discharge port at one end and a second discharge port at the other end; one end of the screw of the screw discharge pipe is connected to the second drive device.

[0012] In one embodiment, the vehicle frame is provided with a first receiving tray mechanism and a second receiving tray mechanism, which are respectively positioned corresponding to the first discharge port and the second discharge port, and are used to open and close the first discharge port and the second discharge port.

[0013] In one embodiment, the top of the hopper is provided with an air vent and a feeding port.

[0014] In one embodiment, four weighing sensors are provided, which are respectively installed between the four bottom corners of the bracket and the four top corners of the vehicle frame.

[0015] In one embodiment, the first driving device includes a first driving motor; the second driving device includes a second driving motor, wherein the first driving motor and the second driving motor are explosion-proof motors.

[0016] In one embodiment, limit blocks and contact sensors are respectively provided at both ends of the guide rail, and the contact sensors are fixed on the limit blocks.

[0017] In one embodiment, a cover plate is provided on the discharge valve port, and the cover plate is opened and closed on the discharge valve port by a cylinder.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] 1. This utility model, through the design of two discharge ports of the feeding device, combined with the design of guide rail and mobile vehicle, can provide materials to two downstream devices at the same time when the hopper is full, meet the needs of multiple tasks, reduce equipment investment and manual intervention, improve the overall efficiency of material feeding, and reduce production costs; at the same time, it integrates a weighing sensor, which can accurately measure materials according to the needs of downstream devices, ensure that the accuracy of feeding is within the allowable error range, and improve the quantitative control accuracy in the production process.

[0020] 2. The self-driving design of the mobile vehicle of this utility model can improve the automation level of the system;

[0021] 3. The guide wheel design of this utility model can assist the frame to move on the guide rail, thereby improving the stability of the mobile vehicle.

[0022] 4. The design of the first receiving tray mechanism and the second receiving tray mechanism of this utility model can prevent unnecessary material from falling out of the discharge port;

[0023] 5. The drive motors of this utility model are all explosion-proof motors, which can adapt to high dust environments, humid environments or explosive locations. This can solve the problem that ordinary motors and electrical equipment in existing equipment may cause safety hazards due to electrical sparks in explosive environments, resulting in the inability to use them normally.

[0024] 6. The design of the guide rail upper limit block and contact sensor in this utility model, combined with the self-driving design of the mobile vehicle, can realize the automatic docking and flexible adjustment of the feeding valve port and the discharge port, providing higher automation, accuracy and safety for the production process;

[0025] 7. The cover plate of this utility model can prevent dust from entering the material discharge valve;

[0026] 8. This utility model is not only applicable to conventional production settings, but can also operate efficiently and stably in special environments such as dusty and explosive environments, significantly improving the automation level and production efficiency of the production line, and solving the shortcomings of traditional feeding equipment in terms of accuracy, adaptability and safety; it is of great significance to the improvement of production processes in related industries. Attached Figure Description

[0027] Figure 1 The diagram shown is a first-angle three-dimensional structural schematic of a dual-head feeding system according to this utility model.

[0028] Figure 2The diagram shown is a second-angle three-dimensional structural schematic of a dual-head feeding system according to this utility model.

[0029] In the diagram: 10. Guide rail; 11. Limit stop; 12. Contact sensor; 20. Discharge valve port; 21. Cover plate; 30. Moving cart; 31. Car frame; 32. Guide wheel; 33. Drive wheel; 34. First drive device; 35. First receiving tray mechanism; 36. Second receiving tray mechanism; 40. Feeding device; 41. Support; 42. Hopper; 421. Air outlet; 422. Feeding port; 43. Screw discharge pipe; 431. First discharge port; 432. Second discharge port; 44. Second drive device; 50. Weighing sensor. Detailed Implementation

[0030] Please see Figures 1-2 The following specific examples illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification.

[0031] It should be noted that the structures, proportions, sizes, etc., illustrated in the accompanying drawings of this specification are only used to complement the content disclosed in the specification for those skilled in the art to understand and read, and are not intended to limit the conditions under which this utility model can be implemented. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportional relationships, or adjustments to the size, without affecting the effects and purposes that this utility model can produce, should still fall within the scope of the technical content disclosed in this utility model.

[0032] In this invention, the serial numbers assigned to components, such as "first," "second," etc., are merely used to distinguish the described objects and have no sequential or technical meaning. The term "connection" in this invention, unless otherwise specified, includes both direct and indirect connections. The terms "comprising," "including," or any other variations thereof are intended to cover a non-exclusive inclusion, encompassing not only the listed elements but also other elements not expressly listed.

[0033] like Figures 1-2As shown, this utility model provides a dual-head feeding system, including guide rails 10, discharge valve ports 20, a moving trolley 30, a feeding device 40, and a weighing sensor 50. Two guide rails 10 are fixed to the ground and symmetrically arranged on both sides of the discharge valve ports 20, parallel to the line connecting the two discharge valve ports 20. The discharge valve ports 20 connect to downstream processes and can be fitted with a cover plate 21. The cover plate 21 is driven by a cylinder and a rotating connector to rotate horizontally on the discharge valve ports 20 to open and close. The moving trolley 30 is movably mounted on the two guide rails 10. The feeding device 40 is positioned above the moving trolley 30, with the line connecting its two discharge ports collinear with the line connecting the two discharge valve ports 20, ensuring that the two discharge ports of the feeding device 40 can connect with the two discharge valve ports 20 respectively after the moving trolley 30 moves on the guide rails 10 for feeding. The weighing sensor 50 is installed between the moving vehicle 30 and the feeding device 40 to detect changes in the weight of the feeding device 40, thereby accurately calculating the feeding amount.

[0034] The mobile vehicle 30 includes a frame 31, guide wheels 32, drive wheels 33, and a first drive device 34. The four guide wheels 32 are respectively located at the four corners of the bottom of the frame 31; the drive wheels 33 are mounted on the guide rail 10; the first drive device 34 is mounted on the frame 31 via a fixing plate, driven by a control program, and linked with the drive wheels 33; the first drive motor of the first drive device 34, under program control, drives the drive wheels 33 to move on the guide rail 10, thereby causing the frame 31 and guide wheels 32 to move linearly along the guide rail 10 as a whole.

[0035] The feeding device 40 includes a support 41, a hopper 42, a screw discharge pipe 43, and a second drive device 44. The hopper 42 is fixedly mounted on the support 41, with an air vent 421 and a feeding port 422 at its top and a screw discharge pipe 43 at its bottom. The screw discharge pipe 43 is arranged parallel to the guide rail 10 and includes a pipe body and a screw. One end of the pipe body has a first discharge port 431, and the other end has a second discharge port 432, both of which face downwards. The screw is disposed inside the pipe body, with both ends connected to the two ends of the pipe body, and the end of the screw near the second discharge port 432 is connected to the second drive device 44, such as a second drive motor.

[0036] The load cell 50 is fixedly installed between the bracket 41 and the frame 31 to detect the overall weight change of the feeding device 40, thereby calculating the feeding amount. Specifically, four load cells 50 can be provided, respectively installed at the four corners of the bottom of the bracket 41 and the top of the frame 31.

[0037] The frame 31 is also equipped with a first receiving tray mechanism 35 and a second receiving tray mechanism 36, which are respectively positioned corresponding to the first discharge port 431 and the second discharge port 432. When the first discharge port 431 and the second discharge port 432 are not connected to the discharge valve port 20, or when they are connected to the discharge valve port 20 but feeding has ended, the cylinders and rotating connecting parts of the first receiving tray mechanism 35 and the second receiving tray mechanism 36 can drive the first receiving tray and the second receiving tray to rotate horizontally to block the first discharge port 431 and the second discharge port 432. The first discharge port 431 and the second discharge port 432 are connected to the discharge valve port 20 to prevent material from falling during the movement of the moving vehicle 30 and the feeding device 40, or to prevent excess material from falling into the discharge valve port 20 after the feeding is finished. When feeding is performed, the cylinders and rotating connectors of the first receiving plate mechanism 35 and the second receiving plate mechanism 36 can drive the first receiving plate and the second receiving plate to rotate horizontally to open the first discharge port 431 and the second discharge port 432 and discharge material into the discharge valve port 20.

[0038] Limit blocks 11 and contact sensors 12 can also be provided at both ends of the guide rail 10. The contact sensors 12 are fixed on the limit blocks 11 and can make contact with the moving trolley 30 to prompt the trolley 30 to stop in place. The combined use of the limit blocks 11 and the contact sensors 12 can limit and block the trolley 30 and the feeding device 40 that are moving linearly on the guide rail 10, ensuring that after the trolley 30 and the feeding device 40 move into place, the first discharge port 431 and the second discharge port 432 can be aligned and docked with the discharge valve port 20.

[0039] All drive motors in this invention are explosion-proof motors, suitable for flammable and explosive materials in special environments. The drive wheel 33 and guide wheel 32 are designed to adapt to dusty environments, avoid static electricity generation, and ensure safe operation.

[0040] The specific working process of this utility model is as follows: (1) Material conveying: The material is fed into the silo 42 through the conveying pipe and the feeding port 422. The weighing sensor 50 reads the weight of the material in the silo 42 in real time (the initial weight of the feeding device 40 is set to 0). When the weight read by the material weighing sensor 50 in real time reaches the set target value (which can be set according to different packaging specifications), the material conveying stops; (2) Feeding preparation: When the downstream equipment connected to the discharge valve port 20 on the left / right side makes a demand for material, the cover plate 21 on the discharge valve port 20 on the left / right side is opened under the cylinder drive. At the same time, the first drive motor of the first drive device 34 drives the drive wheel 33 to run on the guide rail 10 under the instruction of the control program. The drive wheel 33 drives the moving car 30 and the feeding device 40 to move to the left / right as a whole. The guide wheel 32 assists the moving car 30 and the feeding device 40 to move straight to the left / right along the track of the guide rail 10 without deviation; when the moving car 30 and the feeding device 40 move to the left / right as a whole, the guide wheel 32 assists the moving car 30 and the feeding device 40 to move straight to the left / right along the track of the guide rail 10 without deviation; when the moving car 30 and the feeding device 40 move to the left / right, the guide wheel 32 assists the moving car 30 and the feeding device 40 to move straight to the left / right along the track of the guide rail 10 without deviation. When the moving train 30 moves and contacts the left / right contact sensor 12, the first drive motor stops. At this time, the first / second discharge port 432 is directly opposite the left / right discharge valve port 20; (3) Feeding: The cylinder of the first / second receiving plate mechanism 36 drives the first / second receiving plate to open, the second drive motor drives the screw to rotate in the conveying direction, and the screw blade pushes the material at the bottom of the hopper 42 to the left / right end. The material is continuously fed from the first / second discharge port 432 into the left / right discharge valve port 20, thereby being transported to the downstream equipment; (4) End feeding: During the feeding process, the weighing sensor 50 provides real-time feedback on the weight of the material being transported. When the set feeding target value is reached, the second drive motor stops rotating, the screw also stops rotating, and the material stops being transported to the downstream process; The cylinder of the first / second receiving plate mechanism 36 drives the first / second receiving plate to block the first / second discharge port 432, so that no excess material spills down.

[0041] When the hopper 42 is full, it can supply materials to two downstream devices at the same time. After feeding is completed on both sides, the hopper 42, driven by the first drive motor, returns to the feeding port 422 of the upstream conveying pipe in the straight direction of the track and stops. It continues to receive materials from the upstream conveying pipe and stops when the specified target value is reached after feedback from the weighing sensor 50. The hopper 42 is then full of materials, and the next feeding process begins.

[0042] In summary, this utility model, through the design of two discharge ports of the feeding device 40, combined with the design of the guide rail 10 and the moving vehicle 30, allows the hopper 42 to supply materials to two downstream devices simultaneously when it is full, meeting the needs of multiple tasks, reducing equipment investment and manual intervention, improving the overall efficiency of material feeding, and reducing production costs; at the same time, the integrated weighing sensor 50 can accurately measure materials according to the needs of downstream devices, ensuring that the accuracy of the feeding amount is within the allowable error range, and improving the quantitative control accuracy in the production process.

[0043] Therefore, this utility model effectively overcomes the various shortcomings of the prior art and has high industrial application value. The above embodiments are merely illustrative of the principles and effects of this utility model and are not intended to limit this utility model. Any person skilled in the art can modify or change the above embodiments without departing from the spirit and scope of this utility model. Therefore, all equivalent modifications or changes made by those skilled in the art without departing from the spirit and technical concept disclosed in this utility model should still be covered by the claims of this utility model.

Claims

1. A double head feeding system, characterized in that, Comprising Two guide rails, symmetrically arranged on both sides of the discharge valve port, arranged in parallel with the line connecting the two discharge valve ports; A moving trolley, movably arranged on the guide rails; A feeding device, fixedly arranged on the moving trolley, with two discharge ports corresponding to the two discharge valve ports; A load cell, arranged between the moving trolley and the feeding device, for detecting the weight change of the feeding device.

2. The double head feeding system of claim 1, wherein, The moving trolley comprises a trolley frame, a drive wheel and a first drive device; the first drive device is mounted on the trolley frame and driven by a control program, and is linked with the drive wheel; the drive wheel is arranged on the guide rail and driven by the first drive device to move the trolley frame on the guide rail.

3. The double head feeding system of claim 2, wherein, The trolley frame is provided with guide wheels on the four corners of the bottom, which are used to assist the movement of the trolley frame on the guide rail.

4. The double head feeding system of claim 3, wherein, The feeding device comprises a support, a hopper, a screw discharge pipe and a second drive device; the hopper is fixedly mounted on the support; the screw discharge pipe is arranged at the bottom of the hopper and arranged in parallel with the guide rail, one end of the screw discharge pipe is provided with a first discharge port, and the other end is provided with a second discharge port; one end of the screw of the screw discharge pipe is connected with the second drive device.

5. The double head feeding system of claim 4, wherein, The trolley frame is provided with a first material receiving disc mechanism and a second material receiving disc mechanism, which are respectively arranged corresponding to the positions of the first discharge port and the second discharge port, and are used to open and close the first discharge port and the second discharge port.

6. The double head feeding system of claim 4, wherein, The top of the hopper is provided with an air outlet and a feeding port.

7. The double head feeding system of claim 4, wherein, The load cell is provided with four, respectively installed between the bottom corners of the support and the top corners of the trolley frame.

8. The double head feeding system of claim 4, wherein, The first drive device comprises a first drive motor; the second drive device comprises a second drive motor, and the first drive motor and the second drive motor are explosion-proof motors.

9. The double head feeding system of claim 1, wherein, The two ends of the guide rail are respectively provided with a limiting block and a contact sensor, and the contact sensor is fixed on the limiting block.

10. The double head feeding system of claim 1, wherein, The discharge valve port is provided with a cover plate, which is driven by a cylinder to open and close on the discharge valve port.

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