Floating pressure applying device and grinding wheel forming machine
By designing a floating pressure device, using the structure of the through cylinder block and hydraulic chamber, uniform force is applied to the materials in the resin grinding wheel forming process, solving the problem of inconsistent density after forming and improving product quality.
Patent Information
- Application Number
- CN202422152644.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-03
- Publication Date
- 2025-06-17
- Estimated Expiration
- 2034-09-03
AI Technical Summary
In the molding process of resin grinding wheels, when multiple pressure heads press on the material, there is an error, resulting in uneven stress on the materials in each mold, resulting in inconsistent density of the grinding wheel body, affecting product quality.
A floating pressure applying device is designed, including a through cylinder block and a plurality of piston pillars. The through cylinder block is provided with a plurality of hydraulic chambers communicating with each other. The piston pillar is floating and moves, and through the communication of the hydraulic chamber and the design of the liquid injection port, it is ensured that each piston pillar is applied with the same pressure.
It realizes uniform force application of materials in multiple molds, ensures the consistent density of the grinding wheel blank after pressing and molding, and improves the quality of the grinding wheel product.
Smart Images
Figure CN222986710U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the field of production equipment, and more particularly to a floating pressure applying device and a grinding wheel forming machine. Background Art
[0002] Currently, in the forming process of resin grinding wheels, generally, multiple pressing heads are used to apply pressure to the material for forming. Due to inevitable errors during the pressing process, the errors further increase when the number of pressing heads is large, resulting in uneven force on the material in each mold, and thus the density of the formed grinding wheel blank is inconsistent, affecting the quality of the grinding wheel product. Summary of the Utility Model
[0003] The purpose of the present application is to provide a floating pressure applying device and a grinding wheel forming machine, which can apply uniform force to the materials in multiple molds, so that the density of the formed grinding wheel blanks is consistent.
[0004] The present application provides a floating pressure applying device, including a through cylinder body and a plurality of piston columns;
[0005] The through cylinder body is provided with a liquid filling flow channel and a plurality of hydraulic chambers, and the plurality of hydraulic chambers are interconnected through the liquid filling flow channel; the liquid filling flow channel is provided with at least one liquid injection port, and the number of the liquid injection ports is less than the number of the hydraulic chambers;
[0006] The plurality of hydraulic chambers are arranged at intervals, and the plurality of piston columns are respectively installed in the plurality of hydraulic chambers, and the piston columns correspond to the molds to apply pressure to the materials in the molds.
[0007] In the above technical solution, further, the plurality of hydraulic chambers are arranged in a square array; for the plurality of hydraulic chambers in the same row, adjacent hydraulic chambers are connected through the liquid filling flow channel, and for the plurality of hydraulic chambers in the same column, adjacent hydraulic chambers are connected through the liquid filling flow channel.
[0008] In the above technical solution, further, the number of the liquid injection ports is greater than or equal to the number of columns of the array.
[0009] In the above technical solution, further, when the number of the liquid injection ports is equal to the number of columns of the array, the liquid filling flow channel is provided at the head or tail of each column, and the end of the liquid filling flow channel away from the hydraulic chamber forms the liquid injection port;
[0010] The orientations of the liquid injection ports in adjacent columns are opposite.
[0011] In the above technical solution, further, the number of the hydraulic chambers is 9; the number of the liquid injection ports is 3.
[0012] In the above technical solution, further, the top of the piston column is placed in the hydraulic chamber; a pressing plate is installed at the bottom of the piston column to press the material.
[0013] In the above technical solution, further, a sealing groove is formed in the circumferential direction of the piston column, and a sealing ring is installed in the sealing groove.
[0014] In the above technical solution, further, a guide ring is arranged between the piston column and the inner wall of the hydraulic chamber.
[0015] In the above technical solution, further, the through cylinder body is provided with a connection hole for connecting with the moving mechanism.
[0016] The present application also provides a grinding wheel forming machine, including the floating pressing device described in the above solution.
[0017] Compared with the prior art, the beneficial effects of the present application are as follows:
[0018] The floating pressing device provided by the present application has a plurality of hydraulic chambers communicated with each other provided on the through cylinder body, so that the piston columns installed in each hydraulic chamber move floatingly. When the plurality of piston columns press the material, the same pressure can be applied to the material, thereby ensuring that the density of each grinding wheel blank is consistent and improving the quality of the grinding wheel product.
[0019] The present application also provides a grinding wheel forming machine, including the floating pressing device described in the above solution. Based on the above analysis, it can be seen that the grinding wheel forming machine also has the above beneficial effects and will not be elaborated here. Description of the Drawings
[0020] In order to more clearly illustrate the specific embodiments of the present application or the technical solutions in the prior art, the following will briefly introduce the drawings required for use in the description of the specific embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present application. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.
[0021] Figure 1 It is the first structural schematic diagram of the floating pressing device provided by the present application;
[0022] Figure 2 It is the second structural schematic diagram of the floating pressing device provided by the present application.
[0023] In the figure: 101 - through cylinder body; 102 - piston column; 103 - liquid filling flow channel; 104 - hydraulic chamber; 105 - liquid injection port; 106 - pressing plate; 107 - sealing ring; 108 - guide ring; 109 - connection hole. Detailed Embodiments
[0024] The technical solution of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present application without creative efforts shall fall within the protection scope of the present application.
[0025] In the description of the present application, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings. It is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present application. In addition, the terms "first", "second", and "third" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.
[0026] In the description of the present application, it should be noted that unless otherwise clearly specified and limited, the terms "mounted", "connected", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific situations.
[0027] Embodiment 1
[0028] See Figure 1 and Figure 2 As shown, the floating pressure applying device provided by the present application includes a through cylinder block 101 and a plurality of piston columns 102.
[0029] The through cylinder block 101 is provided with a liquid filling flow channel 103 and a plurality of hydraulic chambers 104. The plurality of hydraulic chambers 104 are interconnected through the liquid filling flow channel 103. The liquid filling flow channel 103 is provided with at least one liquid injection port 105, and the number of liquid injection ports 105 is less than the number of hydraulic chambers 104. The plurality of hydraulic chambers 104 are arranged at intervals, and the plurality of piston columns 102 are respectively installed in the plurality of hydraulic chambers 104, and the piston columns 102 correspond to the mold to apply pressure to the material in the mold.
[0030] Specifically, the floating pressure application device has a cylinder piston structure and consists of a through cylinder 101 and multiple piston columns 102. The multiple piston columns 102 are respectively installed in multiple hydraulic chambers 104 and are slidably matched with the hydraulic chambers 104. Hydraulic pumps are connected to multiple liquid injection ports 105, and hydraulic oil can be quickly injected into the through cylinder 101. The hydraulic pumps supply oil to the hydraulic chambers 104 to meet the free expansion and contraction of the piston columns 102, thereby realizing the pressure application and shaping of the material. The hydraulic pump can specifically be a plunger pump.
[0031] When the floating pressure application device starts to apply pressure to the material, the errors existing in the system itself are compensated by the flow of hydraulic oil in each hydraulic chamber 104 and the floating of the piston columns 102. As the continuous pressure application reaches the pre-designed forming pressure, each piston column 102 is in a balanced state. At this time, since the multiple hydraulic chambers 104 are connected to each other through the liquid filling flow channels 103, each hydraulic chamber 104 becomes a connected static pressure sealed container. According to Pascal's principle, each piston column 102 has the same pressure, so that the materials in each mold are uniformly stressed, thereby ensuring that the density of each grinding wheel blank is consistent.
[0032] The floating pressure application device provided by this application sets multiple hydraulic chambers 104 that are connected to each other on the through cylinder 101, so that the piston columns 102 installed in each hydraulic chamber 104 move floatingly. When the multiple piston columns 102 apply pressure to the material, the same pressure can be applied to the material, thereby ensuring that the density of each grinding wheel blank is consistent and improving the quality of the grinding wheel product.
[0033] In an optional solution of this embodiment, as Figure 1 shown, the multiple hydraulic chambers 104 are arranged in a square array; for the multiple hydraulic chambers 104 in the same row, adjacent hydraulic chambers 104 are connected through the liquid filling flow channels 103, and for the multiple hydraulic chambers 104 in the same column, adjacent hydraulic chambers 104 are connected through the liquid filling flow channels 103. That is to say, the length of each liquid filling flow channel 103 connecting two adjacent hydraulic chambers 104 is the same, so that the oil pressure of the hydraulic oil distributed everywhere is the same, and further ensure that each piston column 102 has the same pressure.
[0034] In an optional solution of this embodiment, the number of liquid injection ports 105 is greater than or equal to the number of columns of the array, that is, at least one liquid injection port 105 for pumping oil into the hydraulic chamber 104 is provided in each column, to avoid insufficient oil pressure when the number of hydraulic chambers 104 is large.
[0035] In an optional solution of this embodiment, when the number of liquid injection ports 105 is equal to the number of columns of the array, a liquid filling flow channel 103 is provided at the head or tail of each column, and the end of the liquid filling flow channel 103 far from the hydraulic chamber 104 forms a liquid injection port 105; the orientations of the liquid injection ports 105 in adjacent columns are opposite.
[0036] In this embodiment, the hydraulic pump pumps oil from the liquid injection port 105 into the liquid filling flow channel 103. As the hydraulic oil flows, the oil pressure will decrease, resulting in a lower oil pressure in the hydraulic chamber 104 farther away from the liquid injection port 105 than in the hydraulic chamber 104 closer to the liquid injection port 105. In this application, the orientations of the liquid injection ports 105 in adjacent columns are set to be opposite, which can compensate for the pressure difference of the oil pressure in the hydraulic chamber 104 farther away from the liquid injection port 105 in adjacent columns, so that the oil pressures in the multiple hydraulic chambers 104 in the array are more balanced.
[0037] Specifically, as Figure 1 shown, the number of the hydraulic chambers 104 shown in the figure is 9. The 9 hydraulic chambers 104 are arranged in a three-horizontal and three-vertical layout. The 9 piston columns 102 are respectively installed in the 9 hydraulic chambers 104, and the materials in the 9 molds can be pressed and formed. The number of the liquid injection ports 105 is 3. The liquid injection ports 105 in the first column are arranged below, the liquid injection ports 105 in the second column are arranged above, and the liquid injection ports 105 in the third column are arranged above, so that the oil pressures in the 9 hydraulic chambers 104 are more balanced, and the pressures exerted by each piston column 102 on the materials in each mold are more uniform.
[0038] Embodiment Two
[0039] The floating pressing device in this Embodiment Two is an improvement based on the above embodiment. The technical content disclosed in the above embodiment will not be repeatedly described, and the content disclosed in the above embodiment also belongs to the content disclosed in this Embodiment Two.
[0040] See Figure 2 shown. In an optional solution of this embodiment, the top of the piston column 102 is placed in the hydraulic chamber 104; a pressing plate 106 is installed at the bottom of the piston column 102 to press the material.
[0041] In this embodiment, the through cylinder block 101 includes a cylinder block and a cylinder head below the cylinder block. A plurality of through holes are opened on the cylinder head to facilitate passing bolts to connect with the cylinder block. An inner hole is opened on the cylinder head. The bottom of the piston column 102 passes through the inner hole of the cylinder head and is connected with the pressing plate 106 by bolts to press the material. The shape and size of the pressing plate 106 are adapted to the shape of the mold. Specifically, the piston column 102 can be processed from GCR15 material and heat-treated to HCR55-58.
[0042] In an optional solution of this embodiment, a sealing groove is circumferentially opened on the piston column 102, and a sealing ring 107 is installed in the sealing groove to achieve sealing protection. Optionally, a sealing groove is also opened on the cylinder head, and a sealing ring 107 is installed in the sealing groove to achieve sealing protection.
[0043] In an alternative solution of this embodiment, a guide ring 108 is provided between the piston column 102 and the inner wall of the hydraulic chamber 104. The guide ring 108 is an elastic open ring with a very low coefficient of friction. It can adhere to the inner wall of the hydraulic chamber 104 by elasticity, keeping the gap between the piston column 102 and the inner wall of the hydraulic chamber 104 uniform, so that the sealing ring 107 can play its sealing role normally.
[0044] In an alternative solution of this embodiment, the through cylinder block 101 is provided with a connection hole 109 for connecting to the moving mechanism. Figure 1 From a [specific] perspective, the through cylinder block 101 is square. Connection holes 109 are provided at the four corners of the through cylinder block 101 and at the centers of the four squares formed by the array of the hydraulic chambers 104. The connection holes 109 can be connected to the moving mechanism. Driven by the moving mechanism, the floating pressure application device can be lifted and moved as a whole.
[0045] Embodiment III
[0046] Embodiment III of the present application provides a grinding wheel forming machine, including the floating pressure application device of any of the above embodiments. Therefore, it has all the beneficial technical effects of the floating pressure application device of any of the above embodiments, and will not be elaborated here.
[0047] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application. In addition, those skilled in the art can understand that although some of the embodiments herein include certain features included in other embodiments rather than other features, the combination of the features of different embodiments means that it is within the scope of the present application and forms different embodiments.
Claims
1. A floating pressure device, characterized in that: It includes a through cylinder body and a plurality of piston rods; The through cylinder body is provided with a liquid filling channel and a plurality of hydraulic chambers, and the plurality of hydraulic chambers are interconnected through the liquid filling channel; the liquid filling channel is provided with at least one liquid injection port, and the number of the liquid injection ports is less than the number of the hydraulic chambers; The plurality of hydraulic chambers are arranged at intervals, and the plurality of piston rods are respectively installed in the plurality of hydraulic chambers, and the piston rods correspond to the mold to apply pressure to the material in the mold.
2. The floating pressure device according to claim 1, characterized in that: The plurality of hydraulic chambers are arranged in a square array; the plurality of hydraulic chambers in the same row, adjacent to each other, are connected via the liquid-filling channel, and the plurality of hydraulic chambers in the same column, adjacent to each other, are connected via the liquid-filling channel.
3. The floating pressure device according to claim 2, characterized in that: The number of the injection ports is greater than or equal to the number of columns of the array.
4. The floating pressure device according to claim 3, characterized in that: When the number of the injection ports is equal to the number of columns of the array, the head end or tail end of each column is provided with the filling channel, and the end of the filling channel away from the hydraulic chamber forms the injection port; The directions of the injection ports in adjacent rows are opposite.
5. The floating pressure device according to claim 4, characterized in that: The number of the hydraulic chambers is 9; the number of the injection ports is 3.
6. The floating pressure device according to claim 1, characterized in that: The top of the piston column is placed in the hydraulic chamber; a pressure plate is installed at the bottom of the piston column to apply pressure to the material.
7. The floating pressure device according to claim 1, characterized in that: A sealing groove is provided on the circumference of the piston column, and a sealing ring is installed in the sealing groove.
8. The floating pressure device according to claim 7, characterized in that: A guide ring is arranged between the piston column and the inner wall of the hydraulic chamber.
9. The floating pressure device according to claim 1, characterized in that: The through cylinder body is provided with a connecting hole for connecting with the moving mechanism.
10. A grinding wheel forming machine, characterized in that: It comprises a floating pressure-applying device as claimed in any one of claims 1 to 9.