A fiber-reinforced resin grinding wheel aerial feeding system

Abstract

The utility model relates to the technical field of grinding wheel manufacturing, and in particular to an aerial feeding system for fiber reinforced resin grinding wheels, comprising a constant temperature bin, a material holding component, a feeding component and a material spreading component; the constant temperature bin is used to perform constant temperature treatment on materials; the material holding component is used to hold and stir materials; the feeding component is used to put materials into the turntable of a grinding wheel mold; the material spreading mechanism includes a material spreader; the inside of the material spreader is a mutually independent side material and residual material recovery chamber and a core material and residual material recovery chamber; one side of the two cavities is provided with suction holes corresponding to the side material and the core material respectively, and the other side is connected to a residual material recovery structure capable of generating negative pressure, so as to recover the excess material inside the grinding wheel mold into the material holding pot. An arc-shaped material partition plate is provided on the side where the suction hole is located on the material spreader, which can separate the side material and the core material inside the grinding wheel mold; according to the utility model, in the production process, personnel only need to put materials into the corresponding material holding pot, and the subsequent processes are automatically operated, which saves labor costs and improves the precision of the grinding wheel.

Description

Technical Field

[0001] The utility model relates to the technical field of grinding wheel manufacturing, in particular to an aerial feeding system for a fiber reinforced resin grinding wheel. Background Art

[0002] Fiber-reinforced resin grinding wheels belong to resin-based composite materials in the field of new material technology. They are used in high-altitude maintenance of power transmission and transformation, pipeline maintenance and modification of ships, non-ferrous metal cutting, etc. Resin grinding wheels are grinding wheels with resin as the binder. They have the advantages of small grinding force, low grinding temperature, good self-sharpening and high grinding efficiency, and are widely used.

[0003] The existing resin grinding wheel needs to go through the following nine steps in the production process:

[0004] The first step is to add resin liquid to the rested material for the second mixing; the second step is to pack the mixed material into boxes; the third step is to transport the boxed molding material to the molding workshop; the fourth step is to pour the boxed mixture into the machine material basin; the fifth step is to put the molding material in the material basin into the vibrating screen; the sixth step is to sieve the mixture in the vibrating screen and weigh it; the seventh step is to put the weighed molding material into the mold; the eighth step is to scrape the mixture flat by a rotating lifting scraper; the ninth step is to press the grinding wheel blank.

[0005] The above production process is cumbersome and requires a lot of manual handling of the mixture, wasting a lot of labor costs. Moreover, the weight error of the grinding wheel produced by weighing the mixture is large, between 0-60g, and the material spreading process is lifted by rotating the scraper. The flatness of the produced grinding wheel is poor, the edge is thick and the center is thin. The edge thickness minus the center thickness will have an error of 0.1-0.3mm. This defect will cause the center strength of the grinding wheel to be poor during use, which is a safety hazard. For this reason, we propose an aerial feeding system for fiber-reinforced resin grinding wheels. Utility Model Content

[0006] In order to effectively solve the technical problems in the background technology, the main purpose of the utility model is to provide an aerial feeding system for a fiber-reinforced resin grinding wheel, which greatly shortens the production process, saves labor costs, and improves production efficiency and grinding wheel production quality.

[0007] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0008] A fiber-reinforced resin grinding wheel aerial feeding system, comprising a constant temperature bin, a material containing component, a feeding component and a material spreading component;

[0009] There are two constant temperature chambers, which are used to perform constant temperature treatment on the edge material and core material used to prepare the grinding wheel;

[0010] The material holding assembly comprises two material holding pots for holding side materials and core materials respectively, each material holding pot is provided with a corresponding stirring component to stir the materials in the material holding pot that have been treated with constant temperature; a feeding port connected to a feeding pipe is provided at the bottom of the material holding pot, and a certain amount of side materials or core materials enter the feeding assembly through their respective feeding ports and feeding pipes under the action of gravity;

[0011] The feeding assembly comprises two liftable feeders connected side by side at the bottom of the feeding pipe, which are used to feed the edge material and the core material into the grinding wheel mold; the feeders are located in the grinding wheel mold and are lifted up after the feeding is completed;

[0012] A lifting material spreading mechanism is arranged on one side of the top of the grinding wheel mold, and the material spreading mechanism includes a material spreading device; the material spreading device is arranged along the radial direction of the mold turntable and covers the entire radius of the turntable; an arc-shaped material separation plate is arranged on one side of the surface of the material spreading device, which can separate the edge material and the core material inside the grinding wheel mold;

[0013] The interior of the material spreader is composed of two independent cavity structures, namely a side material and residual material recovery cavity and a core material residual material recovery cavity; one side of the two cavities is provided with suction holes corresponding to the side material and the core material respectively, and the other side is connected to a residual material recovery structure that can generate negative pressure, so as to recover the excess material inside the grinding wheel mold into the internal cavity of the material spreader, and further recover it into the material holding pot.

[0014] Furthermore, the stirring component includes a motor and a plurality of stirring shovels driven to rotate by the motor; the motor is fixed above the material holding pot through a fixing frame; the stirring shovel is located in the material holding pot, and the stirring shovel is connected to the output shaft of the motor through a supporting arm, so that the motor drives the stirring shovel to rotate.

[0015] Furthermore, the feeding assembly is provided with a bracket A on one side of the grinding wheel mold, a cylinder A is installed on the top of the bracket A and a lifting seat is installed on the power output end of the cylinder A, two feeders are arranged side by side on one side of the surface of the lifting seat and the feeding ends of the feeders are connected to the material holding pots for the side materials and the core materials through different discharge pipes.

[0016] Furthermore, the material spreading mechanism also includes a bracket B, a cylinder B and a mounting seat arranged on one side of the grinding wheel mold; the cylinder B is installed on the top of the bracket B and a mounting seat is provided at the power output end of the cylinder B, and a material spreader is installed at the bottom of the mounting seat.

[0017] Furthermore, the curvature of the arc-shaped spacer plate is the same as the curvature of the inner wall of the grinding wheel mold.

[0018] Furthermore, the residual material recovery structure includes a negative pressure suction device, a vacuum suction pipe and a recovery pipe; the suction end of the negative pressure suction device is equipped with a vacuum suction pipe connected to the suction hole, and the discharge end of the negative pressure suction device is equipped with a recovery pipe extending to the inside of the material holding pot.

[0019] Furthermore, the distance difference T between the bottom of the material spreading device and the bottom plate of the mold turntable satisfies the following formula: T = M / (ρ * π * R 2 ), where: T: the distance between the bottom of the spreader and the top of the mold turntable, unit: cm; M: the design weight of the grinding wheel, unit: g; ρ: the measured bulk density of the mixture, unit: g / cm 3 ;π: take 3.14; R: designed grinding wheel radius, unit: cm.

[0020] Compared with the prior art, the utility model has the following beneficial effects:

[0021] 1) Compared with the existing production technology, the utility model greatly saves the production process, shortening the original nine steps to five steps; during the production process, personnel only need to put the materials into the corresponding material holding pot, and the subsequent processes are automatically operated by the machine, saving labor costs;

[0022] 2) On the basis of ensuring the performance of the grinding wheel, both edge material and core material can be used to reduce costs;

[0023] 3) When spreading the material, it is set along the radial direction of the mold turntable and almost covers the entire radius of the turntable. Only gaps are left at both ends of the spreader to ensure the rotation of the mold turntable. This can well ensure the flatness of the produced grinding wheel and reduce the error of the edge thickness and center thickness of the grinding wheel.

[0024] 4) The negative pressure generated by the residual material recovery structure recovers the excess material inside the grinding wheel mold into the internal cavity of the material spreader, and further recovers it into the material holding pot for the material, thereby realizing the reuse of the material.

[0025] 5) The production thickness of the grinding wheel is determined by the material spreader, which greatly reduces the specification error of the finished product. The weight error of the produced grinding wheel is controlled between 0-20g, the product quality is stable, and the grinding wheel structure is uniform, consistent inside and outside, and the edge thickness minus the center thickness is 0-0.1mm error, and the strength of the grinding wheel is significantly improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the structure of a material holding component of a fiber-reinforced resin grinding wheel aerial feeding system of the present invention;

[0027] Figure 2 It is a schematic diagram of the structure of a feeding component of a fiber-reinforced resin grinding wheel aerial feeding system of the present invention;

[0028] Figure 3 It is a schematic diagram of the top view of the structure of a grinding wheel mold of a fiber-reinforced resin grinding wheel aerial feeding system of the present invention in a production state;

[0029] Figure 4The present invention is a schematic diagram of the structure of a material spreading component of a fiber reinforced resin grinding wheel aerial feeding system.

[0030] In the figure: 1. Material holding assembly; 11. Material holding pot; 12. Fixed frame; 13. Motor; 14. Stirring shovel; 15. Feeding pipe; 2. Feeding assembly; 21. Feeder; 22. Bracket A; 23. Cylinder A; 24. Lifting seat; 3. Material spreading assembly; 31. Bracket B; 32. Cylinder B; 33. Mounting seat; 34. Material spreader; 35. Arc-shaped partition plate; 36. Suction hole; 41. Negative pressure suction device; 42. Vacuum suction pipe; 43. Recovery pipe; 5. Grinding wheel mold. DETAILED DESCRIPTION

[0031] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below in conjunction with specific implementation methods.

[0032] like Figure 1-4 As shown, a fiber reinforced resin grinding wheel aerial feeding system includes a constant temperature bin, a material holding component 1, a feeding component 2 and a material spreading component 3.

[0033] There are two constant temperature chambers, which are respectively used to perform constant temperature treatment on the edge material and the core material used for preparing the grinding wheel.

[0034] The material holding assembly 1 includes two material holding pots 11 for holding edge materials and core materials respectively, and each material holding pot 11 is provided with a corresponding stirring component; the stirring component includes a motor 13 and a plurality of stirring shovels 14 driven to rotate by the motor 13; the motor 13 is fixed above the material holding pot 11 through a fixing frame 12; the stirring shovel 14 is located in the material holding pot 11, and the stirring shovel 14 is connected to the output shaft of the motor 13 through a supporting arm, so that the motor 13 drives the stirring shovel 14 to rotate, thereby stirring the material that has been treated with constant temperature in the material holding pot 11; a feeding port connected to a feeding pipe is provided at the bottom of the material holding pot 11, and a certain amount of edge materials or core materials enter the grinding wheel manufacturing mold through their respective feeding ports and feeding pipes 15 under the action of gravity.

[0035] The feeding assembly 2 includes two liftable feeders 21 connected side by side at the bottom of the feeding tube 15, so as to feed the edge material and the core material into the grinding wheel mold; the feeder 21 is provided with a through hole connected to the feeding tube 15, so as to facilitate feeding; the feeding assembly 2 is provided with a bracket A22 on one side of the mold, a cylinder A23 is installed on the top of the bracket A22, and a lifting seat 24 is installed on the power output end of the cylinder A23, two feeders 21 are arranged side by side on one side of the surface of the lifting seat 24, and the feeding end of the feeder 21 is connected to the material holding pot 11 for the edge material and the core material through different feeding tubes 15.

[0036] When feeding, the bottom of the feeder 21 contacts the turntable inside the stationary grinding wheel mold 5. After the quantitative feeding is completed, the lifting cylinder lifts the feeding assembly 2 to a certain height, and the grinding wheel mold starts to rotate, thereby avoiding the feeding block from affecting the material spreading work.

[0037] A lifting material spreading mechanism is arranged on one side of the top of the grinding wheel mold, and the material spreading mechanism includes a bracket B arranged on one side of the grinding wheel mold, a cylinder B32 is installed on the top of the bracket B, and a mounting seat 33 is arranged on the power output end of the cylinder B32, and a material spreading device 34 is installed on the bottom of the mounting seat 33; the material spreading device 34 is arranged inside the grinding wheel mold, and is used to spread the material pushed into the mold turntable during the rotation of the grinding wheel mold turntable; and one side of the surface of the material spreading device 34 is provided with a device that can spread the edge material and The core material is separated by an arc-shaped spacer plate 35, and the curvature of the arc-shaped spacer plate 35 is the same as the curvature of the inner wall of the grinding wheel mold to define the boundary line between the edge material and the core material; a cylinder for the center hole of the molding grinding wheel is provided in the center of the mold turntable, and the material spreader 34 is arranged along the radial direction of the mold turntable and almost covers the entire radius of the turntable when spreading the material. Only gaps are left at both ends of the material spreader 34 to ensure the rotation of the mold turntable, which can well ensure the flatness of the produced grinding wheel and reduce the errors of the edge thickness and center thickness of the grinding wheel.

[0038] Preferably, the above also includes: the inside of the material distributor 34 is two independent cavities, namely, the edge material and residual material recovery cavity and the core material residual material recovery cavity. One side of the two cavities is provided with suction holes 36 corresponding to the edge material and the core material, respectively, which are used as channels for connecting the edge material and residual material recovery cavity or the core material residual material recovery cavity with the outside world, and the other side of the two cavities is connected to the residual material recovery structure, so that the negative pressure generated by the residual material recovery structure can recover the excess material inside the grinding wheel mold to the internal cavity of the material distributor 34, and further recover it into the material holding pot 11.

[0039] Specifically, the residual material recovery structure includes a negative pressure suction device 41, a vacuum suction pipe 42 and a recovery pipe 43; a negative pressure suction device 41 is installed on one side of the top of the fixed frame 12, and a vacuum suction pipe 42 connected to the suction hole 36 is installed at the suction end of the negative pressure suction device 41, and a recovery pipe 43 extending to the inside of the material holding pot 11 is installed at the discharge end of the negative pressure suction device 41; when the negative pressure suction device 41 is in operation, the vacuum suction pipe 42 sucks away excess material, and discharges the excess material from the recovery pipe 43 to the inside of the material holding pot 11.

[0040] When the feeding is completed and the grinding wheel mold is rotating, the cylinder B32 drives the material spreader 34 to move downward. The downward position of the material spreader 34 is set in advance to meet the grinding wheel preparation thickness specifications. The material spreader 34 is used to flatten the internal material during the rotation of the grinding wheel mold. The arc-shaped material separator 35 plays a separating role to avoid the mixing of the edge material and the core material used to prepare the grinding wheel. The excess material is attached to the surface of the material spreader 34 close to the arc-shaped material separator 35, and the suction force generated by the negative pressure suction device 41 is sucked out from the suction hole 36 to the material holding pot 11 for recovery. The entire production line adopts continuous operation. When the material is spread, the material spreading component 3 and the feeding component 2 are lifted, and fall when the next mold arrives at the station and continue to operate.

[0041] It should be noted that the density of the grinding wheel can be controlled by adjusting the suction force of the negative pressure suction device 41. If the suction force is too large, the mixed material that has been smoothed in the mold will be sucked out of the small pit; if the suction force is too small, the excess mixed material will not be sucked out completely. According to multiple tests, it is most appropriate to set the air pressure of the suction device to 0.4-1.2Pa.

[0042] In addition, it is found in production practice that the weight of the grinding wheel is determined by the distance difference T between the bottom of the material spreader and the bottom plate of the mold turntable: T = M / (ρ*π*R 2 ), where: T: the distance between the bottom of the spreader and the bottom plate of the mold turntable, unit: cm; M: the design weight of the grinding wheel, unit: g; ρ: the measured bulk density of the mixture, unit: g / cm 3 ;π: take 3.14; R: designed grinding wheel radius, unit: cm.

[0043] It has been verified that the weight of the grinding wheels produced using the above formula has a small error and is consistent, ranging from 0 to 20g, and the product quality is stable.

[0044] The fiber-reinforced resin grinding wheel aerial feeding system of the utility model can turn the mixed material into a grinding wheel blank in only five steps:

[0045] The first step is to put the mixed edge material and core material into the constant temperature chamber for 4 hours respectively;

[0046] Step 2: Put the edge material and core material after constant temperature into different material pots;

[0047] The third step is to transport a certain amount of edge material and core material from the material holding pot into the grinding wheel mold by gravity;

[0048] Step 4: Use the spreader to smooth the mixture in the mold;

[0049] Step 5: Recycle the excess mixed material into the container.

[0050] Compared with the existing production technology, in the production process of the present application: First, only the first step of the whole process requires human participation, and the remaining steps are completed by automatic devices. Greatly saves labor costs. Second, the whole process is completed in a constant temperature warehouse, reducing the impact of temperature and humidity changes on the mixture. Third, the weight of the grinding wheel is determined by the distance difference between the spreading assembly and the mold turntable. The weight of the produced grinding wheel is consistent with a small error. The weight error of the produced grinding wheel is between 0-20g, and the product quality is stable. Fourth, the grinding wheel has a uniform structure and is consistent inside and outside. The edge thickness minus the center thickness is an error of 0-0.1mm, and the strength of the grinding wheel is significantly improved.

[0051] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A fiber-reinforced resin grinding wheel aerial feeding system, characterized in that: It includes a constant temperature bin, a material holding component, a material feeding component and a material spreading component; There are two constant temperature chambers, which are used to perform constant temperature treatment on the edge material and core material used to prepare the grinding wheel; The material holding assembly comprises two material holding pots for holding side materials and core materials respectively, each material holding pot is provided with a corresponding stirring component to stir the materials in the material holding pot that have been treated with constant temperature; a feeding port connected to a feeding pipe is provided at the bottom of the material holding pot, and a certain amount of side materials or core materials enter the feeding assembly through their respective feeding ports and feeding pipes under the action of gravity; The feeding assembly comprises two liftable feeders connected side by side at the bottom of the feeding pipe, which are used to feed the edge material and the core material into the grinding wheel mold; the feeders are located in the grinding wheel mold and are lifted up after the feeding is completed; A lifting material spreading mechanism is arranged on one side of the top of the grinding wheel mold, and the material spreading mechanism includes a material spreading device; the material spreading device is arranged along the radial direction of the mold turntable and covers the entire radius of the turntable; an arc-shaped material separation plate is arranged on one side of the surface of the material spreading device, which can separate the edge material and the core material inside the grinding wheel mold; The interior of the material spreader is composed of two independent cavity structures, namely a side material and residual material recovery cavity and a core material residual material recovery cavity; one side of the two cavities is provided with suction holes corresponding to the side material and the core material respectively, and the other side is connected to a residual material recovery structure that can generate negative pressure, so as to recover the excess material inside the grinding wheel mold into the internal cavity of the material spreader, and further recover it into the material holding pot.

2. The fiber-reinforced resin grinding wheel aerial feeding system according to claim 1, characterized in that: The stirring component includes a motor and a plurality of stirring shovels driven to rotate by the motor; the motor is fixed above the material holding pot through a fixing frame; the stirring shovel is located in the material holding pot, and the stirring shovel is connected to the output shaft of the motor through a supporting arm, so that the motor drives the stirring shovel to rotate.

3. The fiber-reinforced resin grinding wheel aerial feeding system according to claim 1, characterized in that: The feeding assembly is provided with a bracket A on one side of the grinding wheel mold, a cylinder A is installed on the top of the bracket A, and a lifting seat is installed on the power output end of the cylinder A, two feeders are arranged side by side on one side of the surface of the lifting seat, and the feeding ends of the feeders are connected to the material pots for the side materials and the core materials through different discharge pipes.

4. The fiber-reinforced resin grinding wheel aerial feeding system according to claim 1, characterized in that: The material spreading mechanism also includes a bracket B, a cylinder B and a mounting seat arranged on one side of the grinding wheel mold; the cylinder B is installed on the top of the bracket B and a mounting seat is arranged at the power output end of the cylinder B, and a material spreader is installed at the bottom of the mounting seat.

5. The fiber-reinforced resin grinding wheel aerial feeding system according to claim 1, characterized in that: The curvature of the arc-shaped spacer plate is the same as the curvature of the inner wall of the grinding wheel mold.

6. The fiber-reinforced resin grinding wheel aerial feeding system according to claim 2, characterized in that: The residual material recovery structure includes a negative pressure suction device, a vacuum suction pipe and a recovery pipe; the suction end of the negative pressure suction device is equipped with a vacuum suction pipe connected to the suction hole, and the discharge end of the negative pressure suction device is equipped with a recovery pipe extending to the inside of the material holding pot.

7. The fiber-reinforced resin grinding wheel aerial feeding system according to claim 1, characterized in that: The distance difference T between the bottom of the material spreading device and the bottom plate of the mold turntable satisfies the following formula: T = M / (ρ*π*R 2 ), where: T: the distance between the bottom of the spreader and the top of the mold turntable, unit: cm; M: the design weight of the grinding wheel, unit: g; ρ: the measured bulk density of the mixture, unit: g / cm 3 ;π: take 3.14; R: designed grinding wheel radius, unit: cm.

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