A centerless grinding machine

Abstract

The present invention discloses a centerless grinding machine, which includes multiple centerless grinding machines arranged side by side. A docking mechanism is provided between adjacent centerless grinding machines, and the input and output ends of two adjacent centerless grinding machines are connected to each other through the docking mechanism. The workpieces in the vibrating bowl are conveyed to the centerless grinding machine at the initial position through the vibrating conveyor belt; each docking mechanism includes a V-shaped guide rail, and a conveyor belt is embedded in the V-shaped conveying track surface of the V-shaped guide rail. Each docking mechanism includes a V-shaped guide rail. The present invention links the centerless grinding machines to improve the grinding quality and efficiency. At the same time, the cooling water of the grinding machine is circulated externally. With this structure, the workpieces of the present invention do not need to rely on motors and vibrating motors during transportation, and the workpieces are conveyed by the cooling water. The transportation process is frictionless and more stable. At the same time, the externally transported cooling water can fully fill the V-shaped guide rail, increasing the cooling capacity of the externally transported cooling water, so that the cooling system of the centerless grinding machine always meets the cooling requirements.

Description

Technical Field

[0001] The present invention relates to the field of machining, and particularly to a centerless grinding machine. Background Art

[0002] A centerless grinding machine is a precision grinding machine for outer diameter grinding. The design of this machine tool enables the grinding tool to complete the grinding work without using center positioning during operation, but through lateral comparison positioning between two grinding rolls. This design makes the centerless grinding machine exhibit excellent performance in precision grinding of outer diameters, shaft components, cylinders or outer surfaces, etc., and is particularly suitable for mass production with high precision.

[0003] However, although the centerless grinding machine performs well in terms of production efficiency and precision, there are still some problems in the actual production process. When processing products that require multiple grindings, after each grinding, the workpiece needs to be processed through multiple processes such as drying and handling, and then the next grinding is carried out. This is not only inefficient, but also may cause damage such as bumps and scratches to the product during the transfer process, increasing the production cost.

[0004] In addition, such a working mode has a high demand for human resources. Especially in an environment of high-efficiency and large-scale production, the labor cost will also increase accordingly. Moreover, since each machine needs to be operated separately, the utilization rate of the machine is not maximized, and the waste of material resources is quite serious.

[0005] To solve the above problems, in the prior art, there are some solutions that involve setting up multiple centerless grinding machines connected by guide rails in the middle. In this way, the workpiece after one processing will be conveyed to the input end of the next grinding machine through the guide rail for reprocessing. This method effectively solves the problem that when a single centerless grinding machine processes products that require multiple grindings, the workpiece needs to be processed through multiple processes such as drying and handling after each grinding, and also reduces the possible human errors in the work process.

[0006] However, although this solution improves the production efficiency and product precision to a certain extent, new problems are faced during the process of conveying the workpiece by the guide rail. During the conveying process in the vibration mode, the workpiece and the guide rail are in a continuous state of impact and friction, which will cause serious wear of the guide rail and also damage the precision of the workpiece. Especially when the guide rail is very long, this friction and impact effect is more obvious. In addition, the design of a long guide rail requires a large number of vibration motors, resulting in high equipment costs.

[0007] For equipment using a conveyor belt, although it can convey workpieces from a centerless grinder at one end to the next centerless grinder, since the conveyor belt itself does not have the function of orienting the conveyance of workpieces, when the workpieces enter the next centerless grinder, it is usually necessary for workers to align and feed the conveyed workpieces; moreover, the conveyor belt system requires the use of a motor, making the entire guide rail structure more complex, and problems such as high failure rate, high maintenance cost, and high energy consumption may occur. Summary of the Invention

[0008] To solve the above problems, the present invention provides a centerless grinder that performs external circulation on the cooling water during the grinding process of the grinder, and then uses the externally circulated water to realize the conveyance and use of workpieces, eliminating the need for setting other driving structures, simplifying the structure, reducing costs, reducing the wear of the guide rail and workpieces, meeting smooth conveyance, and the externally circulated cooling water can also increase its heat dissipation capacity, always ensuring the normal operation of the cooling system of the grinder, and effectively solving the deficiencies in the prior art.

[0009] The present invention is achieved through the following technical solutions: A centerless grinder, comprising:

[0010] Multiple centerless grinders are arranged side by side, and a docking mechanism is provided between adjacent centerless grinders. The input and output ends of adjacent two centerless grinders are connected to each other through the docking mechanism for continuous grinding and processing;

[0011] A vibrating bowl, which is arranged at the input end of the centerless grinder at the initial position. A vibrating conveyor belt is provided between the vibrating bowl and the centerless grinder. The workpieces in the vibrating bowl are conveyed into the centerless grinder at the initial position through the vibrating conveyor belt;

[0012] Each of the docking mechanisms includes a V-shaped guide rail. A conveyor belt is embedded in the V-shaped conveying track surface of the V-shaped guide rail. The two conveyor belts are arranged in contact with the V-shaped conveying track surface. The workpiece is located in the V-shaped conveying track surface and is in contact with and supported by the conveyor belts on both sides. The conveyor belt rotates around to the back of the V-shaped guide rail;

[0013] A receiving cavity is opened in each V-shaped guide rail corresponding to each conveyor belt. An expansion driving member is provided on one side of each receiving cavity. The input end of the expansion driving member is connected to the cooling water system of the centerless grinder. The cooling water is pumped into the expansion driving member by the cooling water system, and the expansion driving member moves along the length direction of the V-shaped guide rail. The pumped cooling water is stored in the expansion driving member and fills the entire receiving cavity;

[0014] The output ends of the expansion driving members are all output to the processing area of the centerless grinder through at least one output pipe. When the expansion driving member discharges the internal cooling water and retracts, the conveyor belt is driven to make a rotating motion by the retraction force of the expansion driving member.

[0015] As a preferred technical solution, the expansion drive member includes a guide slider and an elastic water storage bag, one side of the elastic water storage bag is connected to the guide slider, and the other side of the elastic water storage bag is connected to one side of the inner wall of the accommodating cavity. When cooling water is pumped into the elastic water storage bag, the guide slider is pushed to slide along the accommodating cavity. A guide limit block is provided on the guide slider, and the inner wall surface of the accommodating cavity corresponding to the guide limit block is provided with a guide limit slot arranged along the length direction of the accommodating cavity. The guide slider is slidably assembled in the guide limit slot through the guide limit block;

[0016] The expansion drive member also includes a toggle member, which is elastically hinged on the guide slider. When the elastic water storage bag is filled with cooling water and expands, the toggle member contacts the inner side of the conveyor belt and makes the toggle member tilted. During this process, the conveyor belt is in a stationary state.

[0017] When the elastic water storage bag discharges the cooling water inside and shrinks, the toggle member buckles the conveyor belt. At this time, the toggle member is perpendicular to the conveyor belt, and the conveyor belt rotates during this process.

[0018] An open slide groove is arranged on one side of the inner wall of the accommodating cavity close to the outer conveyor belt, and the toggle member passes through the open slide groove and contacts the conveyor belt.

[0019] As a preferred technical solution, the toggle member includes a driving plate, a hinge shaft, a mounting seat and a limit block. Hinge shafts are arranged on both sides of the driving plate, and the mounting seat is installed on the guide slider. Both sides of the driving plate are hingedly mounted on the mounting seat through hinge shafts. The driving plate extends toward the contact teeth of the conveyor belt and has at least a partial overlapping area with the contact teeth. The limit block is arranged on the mounting seat on one side of the driving plate. When the guide slider retracts with the elastic water storage bag, one side of the driving plate is limited by the limit block to keep the driving plate always perpendicular to the conveyor belt and buckle one of the contact teeth of the conveyor belt; when the elastic water storage bag expands by pumping cooling water into it, the driving plate is squeezed by the contact teeth and tilted in the direction away from the limit block.

[0020] As a preferred technical solution, the inner ring of the conveyor belt is provided with an annular cavity surrounding the conveyor belt, and more than one contact tooth is provided in the annular cavity at intervals surrounding the annular cavity;

[0021] The contact teeth all have an inclined contact surface. When cooling water is pumped into the elastic water storage bag to expand, the driving sheet contacts the inclined contact surface of the contact teeth.

[0022] As a preferred technical solution, each elastic water storage bladder has at least one input pipe. The input ends of the input pipes are all connected to the output end of the centerless grinding machine delivery pump. The delivery pump has a multi-way joint. One path of the multi-way joint is connected to the cooling water outlet pipe of the centerless grinding machine. A flow control valve is installed on the cooling water outlet pipe. The remaining paths are connected to the input ends of the input pipes. The input end of the delivery pump is connected to the water tank of the centerless grinding machine cooling water system. A first solenoid valve is installed on each input pipe, and the first solenoid valve is controlled by the control center of the centerless grinding machine.

[0023] As a preferred technical solution, a second solenoid valve is installed on each output pipe. The second solenoid valve is controlled by the control center of the centerless grinding machine. The output port of the output pipe extends towards the processing area of the centerless grinding machine, and the cooled water in the elastic water storage bladder is output to cool the processing area.

[0024] As a preferred technical solution, both sides of the conveyor belt pass through the open cavities on both sides of the V-shaped guide rail. Conveyor belt wheels are installed in the open cavities, and the conveyor belt is rotatably installed on the conveyor belt wheels.

[0025] As a preferred technical solution, the elastic water storage bladder is made of an elastic rubber material with elastic deformation recovery ability. More than one heat dissipation metal block is embedded in the elastic water storage bladder. The inner side of the heat dissipation metal block is in contact with the cooling water. The outer side of the heat dissipation metal block protrudes slightly from the elastic water storage bladder, so that after the elastic water storage bladder is pumped with cooling water and expands and stretches, each heat dissipation metal block is in thermal contact with the V-shaped guide rail.

[0026] As a preferred technical solution, the V-shaped guide rail is made of a metal material. Heat dissipation fins are arranged on any one or more outer surfaces of the V-shaped guide rail. When the elastic water storage bladder is filled with cooling water, the heat of the cooling water is transferred to the V-shaped guide rail for heat dissipation.

[0027] As a preferred technical solution, support platforms are arranged at the bottoms of the docking mechanisms. The support platforms are all fixedly installed on the centerless grinding machine by screws. The docking mechanisms are supported by the support platforms, and both sides of the docking mechanisms are docked with the input and output ends of the centerless grinding machine.

[0028] The beneficial effects of the present invention are as follows: The present invention docks multiple centerless grinding machines through docking mechanisms. Products directly flow from the upper process machine to the lower process machine for grinding through the track. The products do not touch the ground, have no transfer, and no bumps, improving the grinding quality and efficiency and saving time.

[0029] The docking mechanism of the present invention utilizes the cooling water cooled down by the workpiece processing and pumps it into the V-shaped guide rail, so that the elastic water storage bag moves forward with the guide slider and the toggle member. When the cooling water pumped into the V-shaped guide rail is discharged and retracted, the elastic water storage bag retracts. In this process, the retraction force of the elastic water storage bag can be used to drive the conveyor belt to rotate, so that the workpiece located between the two conveyor belts can be transported forward under the action of the rotating force of the conveyor belt. This process does not use a motor and a vibrator, and can be completed with the help of a conveying pump in the cooling system of the grinder, so that the workpiece can be transported over a long distance. The conveying process is free of vibration and friction, and does not require complex mechanical components, thereby reducing economic costs and being more environmentally friendly.

[0030] In addition, the present invention uses a V-shaped guide rail, and two conveyor belts are respectively arranged in the V-shaped conveyor track surface, so that when the workpiece enters the V-shaped guide rail, both sides of the workpiece can fully contact with the conveyor belt, and the bottom is hollowed out. When the conveyor belt is conveyed, there is no contact point between the workpiece and the guide rail, and the conveying is more stable, and it has the purpose of self-centering guidance, reducing manual intervention;

[0031] Since the centerless grinder performs friction processing when processing workpieces, the workpieces will generate a large amount of heat. While the cooling water takes away a large amount of heat, the cooling temperature rises. Long-term circulation work leads to poor cooling effect of the workpiece. The present invention allows the cooling water to circulate one circle from the outside of the grinder, that is, to completely fill the V-shaped guide rail. In this way, the cooling water that has circulated one circle from the outside can greatly reduce the water temperature when it is returned to the grinder for use. In addition, the long-distance layout structure of the V-shaped guide rail is utilized, so that the cooling water is fully in contact with the V-shaped guide rail when filled in the V-shaped guide rail, further improving the cooling effect. Therefore, the present invention uses the external transmission of cooling water as the power source for workpiece transportation, eliminating complex mechanical structures such as motors, and the externally transmitted cooling water can improve its cooling capacity, so that the returned cooling water meets the workpiece processing cooling needs. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0033] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0034] Figure 2 It is a structural schematic diagram of the docking mechanism of the present invention;

[0035] Figure 3 It is a partial front enlarged view of the docking mechanism of the present invention;

[0036] Figure 4 Schematic cross-sectional view of the docking mechanism of the present invention;

[0037] Figure 5 For the present invention Figure 4 Local enlarged view at position A in;

[0038] Figure 6 Schematic cross-sectional view of the docking mechanism of the present invention from another perspective;

[0039] Figure 7 For the present invention Figure 6 Local enlarged view at position B in;

[0040] Figure 8 Schematic structural view of the expansion driving member of the present invention;

[0041] Figure 9 Schematic structural view of the expansion driving member of the present invention from another perspective;

[0042] Figure 10 Partial schematic view of the conveyor belt of the present invention;

[0043] Figure 11 Top view of the whole machine of the present invention;

[0044] Explanation of reference numerals:

[0045] 1, vibrating bowl; 2, vibrating conveyor belt; 3, first centerless grinder; 4, second centerless grinder; 5, docking mechanism; 6, workpiece; 7, support platform; 8, input pipe; 9, delivery pump; 10, output pipe; 11, toggling member; 12, second solenoid valve; 13, first solenoid valve; 51, conveyor belt; 52, V-shaped guide rail; 53, guiding slider; 54, elastic water storage bag; 55, open chute; 56, conveyor belt pulley; 111, mounting seat; 112, limiting stop; 113, driving piece; 512, contact tooth; 513, annular cavity; 531, guiding and limiting block; 541, heat dissipation metal block. Detailed implementation manners

[0046] All features disclosed in this specification, or all steps in the disclosed methods or processes, except for mutually exclusive features and / or steps, can be combined in any manner.

[0047] Any feature disclosed in this specification (including any additional claims, abstract and drawings), unless specifically recited, can be replaced by other equivalent or features with similar purposes. That is, unless specifically recited, each feature is only an example of a series of equivalent or similar features.

[0048] Such as Figure 1As shown, a centerless grinding machine of the present invention includes multiple centerless grinding machines. In this embodiment, two centerless grinding machines are exemplified, namely the first centerless grinding machine 3 and the second centerless grinding machine 4. The first centerless grinding machine 3 and the second centerless grinding machine 4 are arranged side by side, and a docking mechanism 5 is provided between adjacent centerless grinding machines. The input and output ends of adjacent centerless grinding machines are connected to each other through the docking mechanism 5 for continuous grinding and processing. After the workpiece 6 is processed by the first centerless grinding machine 3, it is conveyed to the second centerless grinding machine 4 through the docking mechanism 5 for secondary processing. If higher precision requirements for the workpiece 6 are needed, the number of centerless grinding machines used can be increased, and the number of docking mechanisms 5 used can be correspondingly increased;

[0049] In order to continuously supply materials to the first centerless grinding machine 3, in this embodiment, a vibrating bowl 1 is adopted. The vibrating bowl 1 is arranged at the input end of the centerless grinding machine at the initial position. A vibrating conveyor belt 512 is provided between the vibrating bowl 1 and the centerless grinding machine. The workpiece 6 in the vibrating bowl 1 is conveyed into the centerless grinding machine at the initial position through the vibrating conveyor belt 512, and the vibrating bowl 1 and the vibrating conveyor belt 512 are used to continuously supply materials to the first centerless grinding machine 3;

[0050] As Figure 2 and Figure 3 shown, the docking mechanism 5 in this embodiment includes a V-shaped guide rail 52. A conveyor belt 51 is embedded in the V-shaped conveying track surface of the V-shaped guide rail 52. The two conveyor belts 51 are arranged in contact with the V-shaped conveying track surface. The workpiece 6 is located in the V-shaped conveying track surface and is in contact with and supported by the conveyor belts 51 on both sides. The conveyor belt 51 rotates around to the back of the V-shaped guide rail 52. After the workpiece 6 is output from the centerless grinding machine, it enters the V-shaped conveying track surface, so that both sides of the workpiece 6 are in contact with and supported by the conveyor belts 51. As Figure 3 shown, the bottom of the workpiece 6 is hollowed out, and both sides are in contact with the conveyor belt 51. In this way, when the conveyor belt 51 rotates, it can drive the workpiece 6 to move forward. During the whole process, the workpiece 6 does not contact the V-shaped guide rail 52, so there is no friction, which ensures the precision of the workpiece 6 and prevents the wear of the guide rail;

[0051] As Figures 4 - 6As shown in the figure, a receiving cavity is provided in each V-shaped guide rail 52 corresponding to each conveyor belt 51. An expansion driving member is provided on one side of each receiving cavity. The input end of the expansion driving member is connected to the cooling water system of the centerless grinder. The cooling water pump is pumped into the expansion driving member by the cooling water system, and the expansion driving member is moved along the length direction of the V-shaped guide rail 52. The pumped cooling water is stored in the expansion driving member and fills the entire receiving cavity. Since the length of the V-shaped guide rail 52 is very long, when the receiving cavity is filled with cooling water, the cooling water can cover the receiving cavity. Because the cooling water is dispersed in length, the cooling water will not be very concentrated, and the dispersed cooling water can better achieve heat dissipation. The cooling water is transported through the cooling water system of the centerless grinder. The transport pump 9 at the end of the cooling water system that provides the cooling water system diverts a part of the cooling water into the V-shaped guide rail 52. Therefore, as long as a multi-pass interface is provided at the output end of the transport pump 9, it can be completed.

[0052] Among them, the output ends of the expansion driving members are all output to the processing area of the centerless grinder through at least one output pipe 10. When the expansion driving member retracts by discharging the cooling water inside, the conveyor belt 51 is driven to make a rotating motion by the retraction force of the expansion driving member. The water discharged from the expansion driving member is discharged to the centerless grinder through the output pipe 10. In this way, the cooled water can be output to the workpiece 6 end through the output pipe 10 to achieve the purpose of cooling.

[0053] As Figures 4 - 6 shown in the figure, the expansion driving members each include a guiding slider 53 and an elastic water storage bladder 54. One side of the elastic water storage bladder 54 is connected to the guiding slider 53, and the other side of the elastic water storage bladder 54 is connected to one side of the inner wall of the receiving cavity. When the elastic water storage bladder 54 is pumped with cooling water, it pushes the guiding slider 53 to slide along the receiving cavity. A guiding limit block 531 is provided on the guiding slider 53. Guiding limit sliding grooves arranged along the length direction of the receiving cavity are provided on the inner wall surface of the receiving cavity corresponding to the guiding limit block 531. The guiding slider 53 is slidably assembled in the guiding limit sliding grooves through the guiding limit block 531. After the elastic water storage bladder 54 is pumped with cooling water, the elastic water storage bladder 54 pushes the guiding slider 53, and the guiding slider 53 provides the guiding limit block 531 to slide along the length direction of the receiving cavity. The elastic water storage bladder 54 expands after being pumped with cooling water and serves as a power driving member for the guiding slider 53. Therefore, as long as the elastic water storage bladder 54 is pumped with a water source, expansion can be achieved to achieve the purpose of power driving.

[0054] Among them, as Figure 7As shown, the expansion drive member further includes a toggle member 11, which is elastically hinged on the guide slider 53. When the elastic water storage bag 54 is filled with cooling water and expands, the toggle member 11 contacts the inner side of the conveyor belt 51 and makes the toggle member 11 tilted. During this process, the conveyor belt 51 is in a stationary state. Therefore, when the elastic water storage bag 54 is pumped with cooling water, the toggle member 11 does not apply a toggle force to the conveyor belt 51, and the conveyor belt 51 is in a stationary state.

[0055] When the elastic water storage bag 54 discharges the cooling water inside and retracts, the toggle member 11 buckles the conveyor belt 51. At this time, the toggle member 11 is perpendicular to the conveyor belt 51. During this process, the conveyor belt 51 rotates. Therefore, as long as the cooling water in the elastic water storage bag 54 is released, the elastic water storage bag 54 is deformed and reset. During the reset process, the toggle member 11 can be used to buckle the conveyor belt 51. Figure 8 As shown, at this time, the conveyor belt 51 can be driven to perform conveying action;

[0056] like Figure 5 As shown, an open groove 55 is provided on the inner wall of the accommodating chamber close to the outer conveyor belt 51. The toggle member 11 passes through the open groove 55 and contacts the conveyor belt 51. When the elastic water storage bag 54 moves in an extension and contraction manner, the toggle member 11 can pass through the open groove 55 so that the toggle member 11 is always in contact with the conveyor belt 51. However, when the elastic water storage bag 54 pumps water into the water source, the toggle member 11 will not apply a toggle force to the conveyor belt 51. Only when the elastic water storage bag 54 releases the cooling water inside, the toggle member 11 will apply a toggle force to the conveyor belt 51.

[0057] like Figure 8 and Figure 9 As shown, the toggle member 11 includes a driving piece 113, a hinge shaft, a mounting seat 111 and a limit stopper 112. The driving piece 113 is provided with hinge shafts on both sides, and the mounting seat 111 is mounted on the guide slider 53. The driving piece 113 is hingedly mounted on the mounting seat 111 on both sides through the hinge shaft. The driving piece 113 extends toward the contact teeth 512 of the conveyor belt 51, and at least part of the driving piece 113 has an overlapping area with the contact teeth 512. In this way, when the driving piece 113 retracts in the elastic water storage bag 54, one side of the driving piece 113 is against the limit stopper 112, so that the driving piece 113 always maintains a vertical force application state. Since the driving piece 113 has an overlapping area with the contact teeth 512, the conveyor belt 51 can be buckled to realize the conveying action of the conveyor belt 51.

[0058] The limit stop 112 is arranged on the mounting seat 111 on one side of the driving piece 113. When the guiding slider 53 retracts following the elastic water storage bag 54, one side of the driving piece 113 is limited by the limit stop 112, keeping the driving piece 113 always perpendicular to the conveyor belt 51 and buckling one of the contact teeth 512 of the conveyor belt 51; when the elastic water storage bag 54 is pumped with cooling water and expands, the driving piece 113 is squeezed through the contact tooth 512 and tilts in the direction away from the limit stop 112. Since there is no limiting member on the side of the driving piece 113 away from the limit stop 112 when the elastic water storage bag 54 expands, the driving piece 113 will elastically tilt and will not apply force to the conveyor belt 51. In this embodiment, a torsion spring is installed on the hinge shaft, and the driving piece 113 is elastically hinged on the mounting seat 111 through the torsion spring. In this way, in the normal state, the driving piece 113 can always be perpendicular to the mounting seat 111 and will not fail to contact the contact tooth 512 because it falls down.

[0059] As Figure 10 shown, an annular cavity 513 is formed by surrounding the inner ring of the conveyor belt 51 for one circle. One or more contact teeth 512 are arranged at intervals around the annular cavity 513. The position of the conveyor belt 51 except the area of the annular cavity 513 is in rolling contact with the conveyor belt 51 wheel.

[0060] As Figure 8 shown, each contact tooth 512 has an inclined contact surface. When the elastic water storage bag 54 is pumped with cooling water and expands, the driving piece 113 contacts the inclined contact surface of the contact tooth 512. Since the contact tooth 512 has an inclined contact surface, when the elastic water storage bag 54 is pumped with cooling water and expands, the driving piece 113 will continuously contact the inclined contact surface, reducing the resistance and preventing the driving piece 113 from buckling the contact tooth 512. On the contrary, when the elastic water storage bag 54 discharges the cooling water and retracts, the driving piece 113 will better contact the contact tooth 512 and buckle the end surface on one side of the contact tooth 512, achieving the purpose of driving the conveyor belt 51 to make a rotary motion.

[0061] As Figure 2 and Figure 11 shown, each elastic water storage bag 54 has at least one input pipe 8. The input ends of the input pipes 8 are all connected to the output end of the centerless grinder conveyor pump 9. The conveyor pump 9 has a multi-way joint. One of the paths of the multi-way joint is connected to the cooling water outlet pipe of the centerless grinder. A flow control valve is installed on the cooling water outlet pipe. When the output pipe 10 outputs cooling water to cool the workpiece 6 of the centerless grinder, a very small amount of cooling water can be controlled to be output from the cooling water outlet pipe through the flow control valve. At this time, the cooling water can be conveyed only by relying on the output pipe 10. When the output pipe 10 does not output cooling water, the flow control valve is opened, and the cooling water outlet pipe is used to normally output cooling water to cool the workpiece 6.

[0062] The input end of the remaining path is connected to the input end of the input pipe 8, and the input end of the transfer pump 9 is connected to the water tank of the coolant system of the centerless grinder. A first solenoid valve 13 is installed on each of the input pipes 8, and the first solenoid valve 13 is controlled by the control center of the centerless grinder; a second solenoid valve 12 is installed on each of the output pipes 10, and the second solenoid valve 12 is controlled by the control center of the centerless grinder. The output port of the output pipe 10 extends towards the machining area of the centerless grinder and outputs the cooled water in the elastic water storage bag 54 to cool the machining area. When the transfer pump 9 inputs the coolant into the elastic water storage bag 54, at this time, the first solenoid valve 13 is opened and the second solenoid valve 12 is closed. The elastic water storage bag 54 expands by continuously feeding the coolant through the transfer pump 9, and the flow control valve is normally opened. In this embodiment, the transfer power of the transfer pump 9 must ensure that while supplying water to the cooling outlet pipe, there is also excess pressure to pump the coolant into the elastic water storage bag 54 and cause the elastic water storage bag 54 to fill with water and expand. When the elastic water storage bag 54 is full of water, the first solenoid valve 13 is closed and the second solenoid valve 12 remains closed continuously, and the cooling outlet pipe continuously supplies water to cool the workpiece 6; when it is necessary to transfer the workpiece 6, that is, the second solenoid valve 12 is opened and the first solenoid valve 13 remains closed. At this time, the water in the elastic water storage bag 54 is discharged through the output pipe 10. Since the output pipe 10 extends to the position of the workpiece 6, the discharged coolant can be used for cooling the workpiece 6.

[0063] As Figure 5 shown, both sides of the conveyor belt 51 pass through the open cavities on both sides of the V-shaped guide rail 52, and conveyor belt wheels are installed in the open cavities. The conveyor belt 51 is rotatably installed on the conveyor belt wheels.

[0064] Among them, as Figure 8 shown, the elastic water storage bag 54 is made of an elastic rubber material with elastic deformation recovery ability. One or more heat dissipation metal blocks 541 are embedded in the elastic water storage bag 54. The inner side of the heat dissipation metal block 541 is in contact with the coolant, and the outer side of the heat dissipation metal block 541 protrudes slightly from the elastic water storage bag 54. After the elastic water storage bag 54 is pumped with coolant and expands and stretches, each heat dissipation metal block 541 is in thermal contact with the V-shaped guide rail 52. When the elastic water storage bag 54 is filled with water, the heat dissipation metal block 541 contacts the V-shaped guide rail 52 to achieve a better heat dissipation effect.

[0065] In order to further improve the heat dissipation ability of the pumped coolant, in this embodiment, the V-shaped guide rail 52 is made of a metal material, and heat dissipation fins are provided on any one or more outer surfaces of the V-shaped guide rail 52. When the elastic water storage bag 54 is filled with coolant, the heat of the coolant is transferred to the V-shaped guide rail 52 for heat dissipation. This method can further improve the heat dissipation of the coolant, make the cooling efficiency of the returned coolant higher, and the cooling effect can be better.

[0066] As Figure 1As shown, a supporting platform 7 is provided at the bottom of the docking mechanism 5, and the supporting platform 7 is fixed on the centerless grinder by screws. The docking mechanism 5 is supported by the supporting platform 7, and both sides of the docking mechanism 5 are docked with the input and output ends of the centerless grinder.

[0067] The present invention allows the cooling water to circulate one circle from the outside of the grinder, that is, to completely fill the V-shaped guide rail 52. In this way, the cooling water that has circulated one circle from the outside can greatly reduce the water temperature when it is returned to the grinder for use. In addition, the long-distance layout structure of the V-shaped guide rail 52 is utilized to ensure that the cooling water is fully in contact with the V-shaped guide rail 52 when filled in the V-shaped guide rail 52, further improving the cooling effect. Therefore, the present invention uses the external transmission of cooling water as the power source for conveying the workpiece 6, eliminating complex mechanical structures such as motors, and at the same time, the externally transmitted cooling water can improve its cooling capacity, so that the returned cooling water meets the processing cooling requirements of the workpiece 6.

[0068] The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that are not conceived through creative work should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope defined in the claims.

Claims

1. A centerless grinding machine, characterized in that, include: A plurality of centerless grinders are arranged side by side, and a docking mechanism (5) is provided between adjacent centerless grinders. The input and output ends of two adjacent centerless grinders are connected to each other through the docking mechanism (5) for continuous grinding processing; A vibration plate (1) is arranged at the input end of a centerless grinder at an initial position, a vibration conveyor belt (2) is arranged between the vibration plate (1) and the centerless grinder, and a workpiece (6) in the vibration plate (1) is conveyed to the centerless grinder at the initial position via the vibration conveyor belt (2); The docking mechanism (5) includes a V-shaped guide rail (52), a conveyor belt (51) is embedded in the V-shaped conveyor track surface of the V-shaped guide rail (52), and the two conveyor belts (51) are arranged in close contact with the V-shaped conveyor track surface. The workpiece (6) is located in the V-shaped conveyor track surface and is supported by the conveyor belts (51) on both sides. The conveyor belt (51) is rotatably wound around the back of the V-shaped guide rail (52), and an annular cavity (513) is formed on the inner circle of the conveyor belt (51) around the V-shaped guide rail (52), and more than one contact tooth (512) is arranged in the annular cavity (513) around the annular cavity (513). A receiving cavity is provided in the V-shaped guide rail (52) corresponding to each conveyor belt (51), and an expansion drive member is provided on one side of each receiving cavity. The input end of the expansion drive member is connected to the cooling water system of the centerless grinder, and the cooling water system pumps cooling water into the expansion drive member, so that the expansion drive member moves along the length direction of the V-shaped guide rail (52), and the pumped cooling water is stored in the expansion drive member and fills the entire receiving cavity; The output ends of the expansion drive components are output to the processing area of the centerless grinder through at least one output pipe (10); The expansion drive member comprises a guide slider (53) and an elastic water storage bag (54), one side of the elastic water storage bag (54) is connected to the guide slider (53), and the other side of the elastic water storage bag (54) is connected to one side of the inner wall of the accommodating cavity. When cooling water is pumped into the elastic water storage bag (54), the guide slider (53) is pushed to slide along the accommodating cavity. A guide limit block (531) is arranged on the guide slider (53), and the inner wall surface of the accommodating cavity corresponding to the guide limit block (531) is provided with a guide limit slot arranged along the length direction of the accommodating cavity. The guide slider (53) is slidably assembled in the guide limit slot through the guide limit block (531); The expansion driving member also includes a toggle member (11), and the toggle member (11) is elastically hinged on the guide slider (53); An open slide groove (55) is provided on one side of the inner wall of the accommodating chamber close to the outer conveyor belt (51), and the shifting member (11) passes through the open slide groove (55) and contacts the conveyor belt (51); The toggling member (11) includes a driving piece (113), a hinge shaft, a mounting seat (111) and a limiting stop (112). Hinge shafts are arranged on both sides of the driving piece (113). The mounting seat (111) is mounted on the guiding slider (53). The two sides of the driving piece (113) are hinged to the mounting seat (111) through the hinge shafts. The driving piece (113) extends towards the contact teeth (512) of the conveyor belt (51), and at least part of it has an overlapping area with the contact teeth (512). The limiting stop (112) is arranged on the mounting seat (111) on one side of the driving piece (113). When the elastic water storage bladder (54) discharges the cooling water inside and retracts, the guiding slider (53) retracts along with the elastic water storage bladder (54). One side of the driving piece (113) is limited by the limiting stop (112) to keep the driving piece (113) always perpendicular to the conveyor belt (51) and catch one of the contact teeth (512) of the conveyor belt (51). During this process, the conveyor belt (51) makes a rotating motion. When the elastic water storage bladder (54) pumps in cooling water and expands, the driving piece (113) is squeezed by the contact teeth (512) and tilts in the direction away from the limiting stop (112). During this process, the conveyor belt (51) is in a stationary state.

2. The centerless grinder according to claim 1, wherein: Each of the contact teeth (512) has an inclined contact surface. When the elastic water storage bladder (54) pumps in cooling water and expands, the driving piece (113) contacts the inclined contact surface of the contact teeth (512).

3. The centerless grinding machine according to claim 2, wherein: Each elastic water storage bladder (54) has at least one input pipe (8). The input ends of the input pipes (8) are all connected to the output end of the conveyor pump (9) of the centerless grinder. The conveyor pump (9) has a multi-way joint. One path of the multi-way joint is connected to the cooling water outlet pipe of the centerless grinder. A flow control valve is installed on the cooling water outlet pipe. The remaining paths are connected to the input ends of the input pipes (8). The input end of the conveyor pump (9) is connected to the water tank of the cooling water system of the centerless grinder. First solenoid valves (13) are installed on the input pipes (8), and the first solenoid valves (13) are controlled by the control center of the centerless grinder.

4. The centerless grinding machine according to claim 1, characterized in that: Second solenoid valves (12) are installed on the output pipes (10). The second solenoid valves (12) are controlled by the control center of the centerless grinder. The output ports of the output pipes (10) extend towards the processing area of the centerless grinder and output the cooled water in the elastic water storage bladder (54) to cool the processing area.

5. The centerless grinding machine according to claim 1, characterized in that: Both sides of the conveyor belt (51) pass through the open cavities on both sides of the V-shaped guide rail (52). Conveyor belt wheels are installed in the open cavities, and the conveyor belt (51) is rotatably installed on the conveyor belt wheels.

6. The centerless grinding machine according to claim 1, wherein: The elastic water storage bladder (54) is made of an elastic rubber material with the ability to recover from elastic deformation. One or more heat dissipation metal blocks (541) are embedded in the elastic water storage bladder (54). The inner side of the heat dissipation metal block (541) is in contact with the cooling water. The outer side of the heat dissipation metal block (541) protrudes slightly from the elastic water storage bladder (54), so that after the elastic water storage bladder (54) is pumped with cooling water and expands and stretches, each heat dissipation metal block (541) is in thermally conductive contact with the V-shaped guide rail (52).

7. The centerless grinding machine according to claim 1, characterized in that: The V-shaped guide rail (52) is made of a metal material. Heat dissipation fins are provided on any one or more outer surfaces of the V-shaped guide rail (52). When the elastic water storage bladder (54) is filled with cooling water, the heat of the cooling water is transferred to the V-shaped guide rail (52) for heat dissipation.

8. The centerless grinding machine according to claim 1, wherein: Support platforms (7) are provided at the bottoms of the docking mechanisms (5). The support platforms (7) are fixedly installed on the centerless grinding machine by screws. The docking mechanisms (5) are supported by the support platforms (7), and both sides of the docking mechanisms (5) are docked with the input and output ends of the centerless grinding machine.

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