A centerless grinding machine for bar grinding

Abstract

The present invention provides a centerless grinding machine for bar grinding, belonging to the technical field of bar grinding. The centerless grinding machine for bar grinding includes a main frame body, on the top surface of which a first workbench and a second workbench are fixedly installed. Inside the first workbench and the second workbench, a second rotating shaft is rotatably installed, and grinding rollers are fixedly installed on the outer surfaces of the second rotating shafts. An automatic feeding component and a driving component are arranged on the top surfaces of the first workbench and the second workbench. In the present invention, when the second connecting rod moves in the extension frame along with the first toothed plate in the direction of the third connecting rod, it can drive the baffle plate to move synchronously inside the feeding frame, that is, the baffle plate moves inside the feeding frame in the direction of the third connecting rod, so that the bars placed in the material bin can fall into the feeding frame, and then can fall between the two grinding rollers through the feeding frame, thus achieving the purpose of automatically adding the bars between the two grinding rollers.

Description

Technical Field

[0001] The present invention relates to the technical field of bar grinding, and more specifically, to a centerless grinding machine for bar grinding. Background Art

[0002] 304 bars are round bar-shaped materials made of 304 stainless steel and are widely used in multiple industries such as machinery, chemical industry, food, and medicine. 304 stainless steel itself has good corrosion resistance, high temperature resistance, and excellent processing performance. Therefore, it is one of the most common types of stainless steel. During the process of bar processing, a centerless grinding machine is required to perform grinding operations on the bars to make the surface of the bars smooth. A centerless grinding machine is a grinding equipment for precision machining, mainly used for centerless grinding of workpieces. The centerless grinding machine places the workpiece between two rotating grinding wheels. Under the action of the main grinding wheel, the workpiece rotates and grinds along a fixed path. By adjusting the relative position between the grinding wheel and the workpiece, the depth of grinding and the surface quality can be precisely controlled, thus achieving the effect of precision grinding.

[0003] However, there are still some problems in the actual use of the existing centerless grinding machines. For example, when the existing centerless grinding machines perform grinding operations on bars, they usually use manual feeding, that is, the operator places the bars to be ground between the two grinding rolls and then performs grinding. On the one hand, it increases the danger of the operator, and on the other hand, it affects the grinding efficiency. Summary of the Invention

[0004] To make up for the above deficiencies, the present invention provides a centerless grinding machine for bar grinding that overcomes the above technical problems or at least partially solves the above problems.

[0005] The present invention is implemented as follows:

[0006] The present invention provides a centerless grinding machine for bar grinding, including a main frame body. A workbench one and a workbench two are fixedly installed on the top surface of the main frame body. A rotating shaft two is rotatably installed inside each of the workbench one and the workbench two. A grinding roll is fixedly installed on the outer surface of each of the rotating shafts two. A bar is placed between the two grinding rolls. One end of each of the two rotating shafts two is fixedly installed with a driven gear. The two driven gears are meshed with each other. A motor two is fixedly installed on the top surface of the main frame body. A driving gear is fixedly installed at the output end of the motor two. The driving gear is meshed with one of the driven gears. An automatic feeding component and a driving component are arranged on the top surfaces of the workbench one and the workbench two. A cooling box is fixedly installed on the top surface of the workbench one. A cooling component is arranged inside the cooling box;

[0007] The driving assembly includes a vertical plate, a rotating shaft 1 is rotatably installed inside the vertical plate, one end of the rotating shaft 1 extends to the top of one of the driven gears, a side surface of one of the driven gears and one end of the rotating shaft 1 are fixedly installed with pulleys, a transmission belt is sleeved between the two pulleys, and the driving assembly is used for the transmission of the automatic unloading assembly and the cooling assembly;

[0008] The automatic unloading assembly comprises a mounting plate, the mounting plate is fixedly mounted on the top surface of the workbench 1 and the workbench 2, a unloading rack is fixedly mounted inside the mounting plate, and the automatic unloading assembly is used for automatic unloading of bars;

[0009] The cooling assembly includes two movable sleeves, both of which are arranged inside the cooling box. The cooling assembly is arranged to transport the coolant inside the cooling box.

[0010] In a preferred solution, two extension frames are installed on one side surface of the vertical plate, and the two extension frames are internally movably connected with a tooth plate 1, and the vertical plates are rotatably installed with mounting shafts on both sides of the tooth plate 1, and the outer surfaces of the mounting shafts are fixedly installed with gear 2 and half gear plates, and one end of the rotating shaft 1 is fixedly installed with gear 1, and the gear 1 is meshed with the two gears 2, and the two half gear plates are indirectly meshed with the tooth plate 1, and connecting rod 2 and connecting rod 3 are respectively fixedly installed at both ends of the tooth plate 1.

[0011] In a preferred solution, a support rod is fixedly installed on the top surface of the mounting plate, a top plate is fixedly installed on the top surface of the support rod, a limiting frame 1 is fixedly installed on the top surface of the top plate, a material bin is movably connected to the inner side of the limiting frame 1, a baffle is movably inserted into the interior of the unloading rack, one side surface of the baffle is fixedly connected to one end of the connecting rod 2, both side surfaces of the unloading rack are fixedly installed with fixing blocks, one side surface of the fixing block is fixedly installed with the connecting rod 1, one side surface of the connecting rod 1 is fixedly installed with the limiting frame 2, and the baffle is movably connected to the inside of the limiting frame 2.

[0012] In a preferred embodiment, a snap-in groove is provided inside the top plate, a connecting plate is movably snap-connected inside the snap-in groove, one end of the connecting plate is fixedly connected to the bottom surface of the silo, and the other end of the connecting plate is fixedly connected to the top surface of the second connecting rod.

[0013] In a preferred embodiment, one end of the connecting rod three extends into the interior of the cooling box, and a horizontal plate is fixedly installed on the end of the connecting rod three extending into the interior of the cooling box. An extension rod is fixedly installed on one side surface of the horizontal plate, and a plurality of toggle plates are fixedly installed on the outer surfaces of the two extension rods, and a plurality of through holes are opened through one side surface of the plurality of toggle plates.

[0014] In a preferred embodiment, a spring is fixedly connected between the bottom surface of the movable sleeve and the inner bottom surface of the cooling box. A column is arranged inside the spring. The column is fixedly installed on the inner bottom surface of the cooling box. The column is movably sleeved inside the movable sleeve. A plurality of liquid inlet grooves are formed in the bottom surface of the column. A liquid inlet cavity is formed inside the column. A first blocking ball is placed on the top surface of the column. A partition is fixedly installed inside the movable sleeve. The partition divides the inside of the movable sleeve into a liquid suction cavity and a liquid storage cavity. A communication groove is formed through the inside of the partition. A water outlet cavity is formed above the liquid storage cavity. A second blocking ball is placed above the partition.

[0015] In a preferred embodiment, a rotating column is rotatably installed on the inner bottom surface of the cooling box. The rotating column is located between the two movable sleeves. A third gear is fixedly installed on the outer surface of the rotating column. A turntable is fixedly installed on the outer surface of the rotating column. Two pressing plates are fixedly installed on the bottom surface of the turntable. One end of one of the extension rods is fixedly installed with a mounting bracket.

[0016] In a preferred embodiment, a connecting block is fixedly installed on one side surface of the mounting bracket. A second toothed plate is fixedly installed on one side surface of the connecting block. The second toothed plate meshes with the third gear.

[0017] In a preferred embodiment, a liquid infusion pipe is fixedly connected to the outer surface of the movable sleeve at the water outlet cavity. One end of the liquid infusion pipe extends between the first workbench and the second workbench. An liquid outlet rack is arranged between the first workbench and the second workbench. One end of the liquid infusion pipe extending between the first workbench and the second workbench is fixedly connected to one side surface of the liquid outlet rack. A liquid spraying pipe is fixedly connected to one side surface of the liquid outlet rack.

[0018] In a preferred embodiment, an L-shaped bracket is fixedly installed on the top surface of the liquid outlet rack. One end of the L-shaped bracket is fixedly connected to one side surface of the material bin. A guide rod is fixedly connected between the first workbench and the second workbench. A movable bracket is movably sleeved on the outer surface of the guide rod. The liquid outlet rack is fixedly installed on the top surface of the movable bracket.

[0019] The centerless grinding machine for bar grinding provided by the present invention has the following beneficial effects:

[0020] 1. By setting up an automatic unloading component, when the connecting rod 2 moves along with the tooth plate 1 inside the extension frame toward the direction of the connecting rod 3, it can drive the baffle to move synchronously inside the unloading frame, that is, the baffle moves inside the unloading frame toward the direction of the connecting rod 3 until one end of the baffle moves to the inside of the limit frame 2, so that the inside of the unloading frame can lose the blockage, so that the rods placed in the silo can fall into the inside of the unloading frame, and then they can fall between the two grinding rollers through the unloading frame, thereby achieving the purpose of automatically adding the rods between the two grinding rollers.

[0021] 2. By setting up a cooling component, when the connecting rod 3 drives the extension rod to move back and forth inside the cooling box, the movable sleeve can move up and down on the outer surface of the column. During the up and down movement, the cooling liquid inside the movable sleeve is pressed into the liquid storage chamber, and so on. Finally, the cooling liquid can be continuously transported to the water outlet chamber and enter the inside of the infusion tube during the up and down movement of the movable sleeve, thereby achieving the purpose of synchronously cooling the grinding roller and the rod during the grinding process, thereby improving the grinding effect of the rod.

[0022] 3. By setting a transverse plate, when the tooth plate 1 moves back and forth, it can drive the connecting rod 3 to move back and forth inside the cooling box. Since the connecting rod 3 is located at one end inside the cooling box and is fixedly installed with a transverse plate, it can drive the transverse plate to move synchronously, and then drive the extension rod and the toggle plate installed on one side of the transverse plate to move back and forth, and to toggle the coolant stored in the cooling box, which can effectively prevent the coolant from precipitating inside the cooling box, thereby improving the cooling effect of the grinding roller and the rod. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0024] Figure 1 It is an overall stereogram provided by an embodiment of the present invention;

[0025] Figure 2 A schematic diagram of the overall rear view structure provided for an embodiment of the present invention;

[0026] Figure 3 A schematic diagram of the structure of an automatic unloading assembly provided in an embodiment of the present invention;

[0027] Figure 4 A schematic diagram of the cross-sectional structure of a feed rack provided in an embodiment of the present invention;

[0028] Figure 5 For the embodiment of the present invention Figure 4 Schematic enlarged view of part B in

[0029] Figure 6 Schematic structural view of the limiting member for the embodiment of the present invention

[0030] Figure 7 Schematic cross-sectional view of the cooling box for the embodiment of the present invention

[0031] Figure 8 Schematic side view of the cooling box for the embodiment of the present invention

[0032] Figure 9 Schematic cross-sectional view of the movable sleeve for the embodiment of the present invention

[0033] Figure 10 Schematic structural view of the second toothed plate for the embodiment of the present invention

[0034] Figure 11 For the embodiment of the present invention Figure 2 Schematic enlarged view of part B in

[0035] In the figure: 1. Main frame body; 2. Workbench 1; 3. Workbench 2; 4. Grinding roller; 5. Bar; 6. Cooling box; 7. Automatic blanking component; 701. Mounting plate; 702. Support rod; 703. Top plate; 704. Blanking frame; 705. Baffle; 706. Limiting frame 1; 707. Bin; 708. Clamping groove; 709. Connecting plate; 710. Fixed block; 712. Connecting rod 1; 713. Limiting frame 2; 8. Driving component; 801. Vertical plate; 802. Extension frame; 803. Tooth plate 1; 804. Rotating shaft 1; 805. Gear 1; 806. Mounting shaft; 807. Gear 2; 808. Half tooth disc; 809. Connecting rod 2; 810. Connecting rod 3; 811. Limiting plate; 9. Cooling component; 901. Movable sleeve; 902. Liquid infusion pipe; 903. Liquid outlet frame; 904. Liquid spraying pipe; 905. Guide rod; 906. Movable frame; 907. Column; 909. Partition board; 910. Liquid suction cavity; 911. Liquid inlet cavity; 912. Communication groove; 913. Liquid storage cavity; 914. Water outlet cavity; 915. Plugging ball 1; 916. Plugging ball 2; 917. Spring; 918. Liquid inlet groove; 919. Rotating column; 920. Turntable; 921. Pressing plate; 922. Gear 3; 923. Mounting frame; 924. Connecting block; 925. Tooth plate 2; 10. Conveyor frame; 11. Motor 1; 12. Conveyor belt; 13. Collection box; 14. Motor 2; 15. Driving gear; 16. Rotating shaft 2; 17. Driven gear; 18. Pulley; 19. Transmission belt; 20. Horizontal plate; 21. Extension rod; 22. Poking plate; 23. Through hole; 24. L-shaped frame. Detailed implementation manners

[0036] To make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0037] Refer to Figures 1-11, the present invention provides a technical solution: a centerless grinding machine for bar grinding, which includes a main frame body 1. On the top surface of the main frame body 1, a first workbench 2 and a second workbench 3 are fixedly installed. Inside the first workbench 2 and the second workbench 3, a second rotating shaft 16 is rotatably installed. On the outer surface of the second rotating shaft 16, a grinding roller 4 is fixedly installed. A bar 5 is placed between the two grinding rollers 4. At one end of each of the two second rotating shafts 16, a driven gear 17 is fixedly installed. The two driven gears 17 are meshed with each other. On the top surface of the main frame body 1, a second motor 14 is fixedly installed. At the output end of the second motor 14, a driving gear 15 is fixedly installed. The driving gear 15 is meshed with one of the driven gears 17. On the top surfaces of the first workbench 2 and the second workbench 3, an automatic feeding assembly 7 and a driving assembly 8 are provided. On the top surface of the first workbench 2, a cooling box 6 is fixedly installed. Inside the cooling box 6, a cooling assembly 9 is provided;

[0038] During operation, by controlling the start of the second motor 14, during the start of the second motor 14, the driving gear 15 can be driven to rotate, and then one of the driven gears 17 can be driven to rotate. Since the two driven gears 17 are meshed with each other, the two second rotating shafts 16 can be driven to rotate, thereby driving the two grinding rollers 4 to rotate. At this time, when the bar 5 is placed between the two grinding rollers 4, the outer surface of the bar 5 can be ground, thus achieving the purpose of being able to grind the outer surface of the bar 5.

[0039] The driving assembly 8 includes a vertical plate 801. Inside the vertical plate 801, a first rotating shaft 804 is rotatably installed. One end of the first rotating shaft 804 extends above one of the driven gears 17. On one side surface of one of the driven gears 17 and one end of the first rotating shaft 804, a pulley 18 is fixedly installed. A transmission belt 19 is sleeved between the two pulleys 18. The driving assembly 8 is provided for driving the automatic feeding assembly 7 and the cooling assembly 9;

[0040] On one side surface of the vertical plate 801, two extension frames 802 are installed. Inside the two extension frames 802, a first toothed plate 803 is movably clamped. On both sides of the vertical plate 801 where the first toothed plate 803 is located, a mounting shaft 806 is rotatably installed. On the outer surface of the mounting shaft 806, a second gear 807 and a semi-toothed disc 808 are fixedly installed. One end of the first rotating shaft 804 is fixedly installed with a first gear 805. The first gear 805 is meshed with the two second gears 807. The two semi-toothed discs 808 are intermittently meshed with the first toothed plate 803. At both ends of the first toothed plate 803, a second connecting rod 809 and a third connecting rod 810 are respectively fixedly installed.

[0041] During operation, when one of the driven gears 17 rotates, it can drive the first rotating shaft 804 to rotate under the transmission action of the pulley 18 and the transmission belt 19, thereby driving the first gear 805 on the outer surface of the first rotating shaft 804 to rotate. When the first gear 805 rotates, it can drive the two second gears 807 engaged with it to rotate, thereby driving the semi-toothed disc 808 to rotate. When the semi-toothed disc 808 located below the first toothed plate 803 meshes with the first toothed plate 803, the rotation of the semi-toothed disc 808 can drive the first toothed plate 803 to move towards the direction of the third connecting rod 810. Conversely, it drives the first toothed plate 803 to move towards the direction of the second connecting rod 809. That is, when the second motor 14 operates, it can drive the first toothed plate 803 to move back and forth inside the extension frame 802. During the movement, it can drive the automatic blanking component 7 and the cooling component 9 to operate.

[0042] A limiting plate 811 is fixedly installed on the front surface of the first toothed plate 803, which can effectively limit the first toothed plate 803.

[0043] The automatic blanking component 7 includes a mounting plate 701, which is fixedly installed on the top surfaces of the first workbench 2 and the second workbench 3. A blanking frame 704 is fixedly installed inside the mounting plate 701. The setting of the automatic blanking component 7 is used for the automatic blanking of the bar 5.

[0044] A support rod 702 is fixedly installed on the top surface of the mounting plate 701. A top plate 703 is fixedly installed on the top surface of the support rod 702. A first limiting frame 706 is fixedly installed on the top surface of the top plate 703. A material bin 707 is movably clamped inside the first limiting frame 706. A baffle 705 is movably inserted inside the blanking frame 704. One side surface of the baffle 705 is fixedly connected to one end of the second connecting rod 809. Fixing blocks 710 are fixedly installed on both side surfaces of the blanking frame 704. A first connecting rod 712 is fixedly installed on one side surface of the fixing block 710. A second limiting frame 713 is fixedly installed on one side surface of the first connecting rod 712. The baffle 705 is movably clamped inside the second limiting frame 713.

[0045] A conveying frame 10 is fixedly installed on the top surface of the main frame body 1. A first motor 11 is fixedly installed on the bottom surface of the conveying frame 10. A conveyor belt 12 is arranged inside the conveying frame 10. A collection box 13 is placed at one end of the conveying frame 10. The ground bar 5 can fall into the inside of the conveyor belt 12, and then through the conveyance of the conveyor belt 12 and fall into the inside of the collection box 13 for unified collection, thereby achieving the purpose of collecting the ground bar 5.

[0046] During operation, first, the bars 5 to be ground are neatly added to the inside of the bin 707. Then, when the second connecting rod 809 moves in the inside of the extension frame 802 along with the first toothed plate 803 towards the direction of the third connecting rod 810, it can drive the baffle 705 to move synchronously inside the blanking frame 704, that is, the baffle 705 moves inside the blanking frame 704 towards the direction of the third connecting rod 810. Until one end of the baffle 705 moves into the inside of the second limiting frame 713, the inside of the blanking frame 704 will lose its blockage, so that the bars 5 placed inside the bin 707 can fall into the inside of the blanking frame 704. Subsequently, it can fall through the blanking frame 704 between the two grinding rollers 4. And the two grinding rollers 4 are inclined. When the bar 5 falls between the two grinding rollers 4, it can gradually move towards the inclined end of the grinding roller 4 along with the rotation of the grinding roller 4, that is, towards the direction of the conveyor belt 12. And the bars 5 that fall into the inside of the blanking frame 704 can fall between the two grinding rollers 4 one by one, realizing automatic feeding operation, thus achieving the purpose of automatically adding the bars 5 between the two grinding rollers 4.

[0047] Moreover, the bars 5 that fall between the two grinding rollers 4 can block the bars 5 inside the blanking frame 704. Until the previously fallen bar 5 moves a distance of one bar 5, another bar 5 can then fall between the two grinding rollers 4 by itself. And as mentioned above, the baffle 705 can be inserted and withdrawn back and forth inside the blanking frame 704 during the reciprocating movement of the first toothed plate 803, separating the bars 5 that fall into the inside of the blanking frame 704.

[0048] A clamping groove 708 is penetrated and opened inside the top plate 703. A connecting plate 709 is movably clamped inside the clamping groove 708. One end of the connecting plate 709 is fixedly connected to the bottom surface of the bin 707, and the other end of the connecting plate 709 is fixedly connected to the top surface of the second connecting rod 809.

[0049] During operation, when the first toothed plate 803 drives the second connecting rod 809 to move back and forth, it can drive the connecting plate 709 to move synchronously inside the clamping groove 708, and then drive the bin 707 to move back and forth inside the first limiting frame 706. During the movement, the bars 5 placed inside the bin 707 can be moved, that is, it can make the bars 5 inside the bin 707 better enter the inside of the blanking frame 704, improving the blanking effect and preventing the problem that the bars 5 are not easy to fall into the inside of the blanking frame 704 when they are in a state of mutual adhesion inside the bin 707.

[0050] One end of the connecting rod three 810 extends to the interior of the cooling box 6, and a horizontal plate 20 is fixedly installed on the end of the connecting rod three 810 extending to the interior of the cooling box 6. An extension rod 21 is fixedly installed on one side surface of the horizontal plate 20, and multiple toggle plates 22 are fixedly installed on the outer surfaces of the two extension rods 21. Multiple through holes 23 are opened through one side surface of the multiple toggle plates 22.

[0051] During operation, when the tooth plate 803 moves back and forth, it can drive the connecting rod 3 810 to move back and forth inside the cooling box 6. Since the connecting rod 3 810 is located at one end inside the cooling box 6 and is fixedly installed with a cross plate 20, it can drive the cross plate 20 to move synchronously, and then drive the extension rod 21 and the toggle plate 22 installed on one side of the cross plate 20 to move back and forth, and to toggle the coolant stored in the cooling box 6, which can effectively prevent the coolant from precipitating inside the cooling box 6, thereby improving the cooling effect of the grinding roller 4 and the rod 5, and indirectly improving the grinding effect of the rod 5.

[0052] The cooling assembly 9 includes two movable sleeves 901, both of which are arranged inside the cooling box 6. The cooling assembly 9 is arranged to transport the coolant inside the cooling box 6;

[0053] A spring 917 is fixedly connected between the bottom surface of the movable sleeve 901 and the inner bottom surface of the cooling tank 6. An upright column 907 is arranged inside the spring 917. The upright column 907 is fixedly installed on the inner bottom surface of the cooling tank 6. The upright column 907 is movably sleeved inside the movable sleeve 901. A plurality of liquid inlet grooves 918 are formed in the bottom surface of the upright column 907. A liquid inlet cavity 911 is formed inside the upright column 907. A first plug ball 915 is placed on the top surface of the upright column 907. A partition plate 909 is fixedly installed inside the movable sleeve 901. The partition plate 909 divides the inside of the movable sleeve 901 into a liquid suction cavity 910 and a liquid storage cavity 913. A communication groove 912 is formed through the inside of the partition plate 909. A water outlet cavity 914 is formed above the liquid storage cavity 913. A second plug ball 916 is placed above the partition plate 909. A rotating column 919 is rotatably installed on the inner bottom surface of the cooling tank 6. The rotating column 919 is located between two movable sleeves 901. A third gear 922 is fixedly installed on the outer surface of the rotating column 919. A turntable 920 is fixedly installed on the outer surface of the rotating column 919. Two pressing plates 921 are fixedly installed on the bottom surface of the turntable 920. One end of one extension rod 21 is fixedly installed with a mounting bracket 923. A connecting block 924 is fixedly installed on one side surface of the mounting bracket 923. A second toothed plate 925 is fixedly installed on one side surface of the connecting block 924. The second toothed plate 925 meshes with the third gear 922. A liquid delivery pipe 902 is fixedly connected to the outer surface of the movable sleeve 901 at the position of the water outlet cavity 914. One end of the liquid delivery pipe 902 extends between the first workbench 2 and the second workbench 3. A liquid outlet rack 903 is arranged between the first workbench 2 and the second workbench 3. One end of the liquid delivery pipe 902 extending between the first workbench 2 and the second workbench 3 is fixedly connected to one side surface of the liquid outlet rack 903. A liquid spraying pipe 904 is fixedly connected to one side surface of the liquid outlet rack 903.

[0054] During operation, when the connecting rod III 810 drives the extension rod 21 to move back and forth inside the cooling tank 6, it can synchronously drive the mounting bracket 923, the connecting block 924 and the second toothed plate 925 to move inside the cooling tank 6. Moreover, the second toothed plate 925 meshes with the third gear 922. That is, when the second toothed plate 925 moves back and forth, it can drive the rotating column 919 to rotate back and forth inside the cooling tank 6, thereby driving the turntable 920 to rotate. As the turntable 920 rotates, the pressing plate 921 can rotate above the movable sleeve 901. When the bottom surface of the pressing plate 921 contacts the top surface of the movable sleeve 901, it can apply a downward pressure to the movable sleeve 901, so that the movable sleeve 901 moves downward on the outer surface of the column 907. When the top surface of the movable sleeve 901 separates from the bottom surface of the pressing plate 921, it can return to its original state under the action of the spring 917, that is, move upward under the action of the spring 917. When the movable sleeve 901 moves upward, it can suck the coolant inside the cooling tank 6 into the inside of the liquid inlet cavity 911 through the liquid inlet groove 918 and enter the liquid suction cavity 910 through the first plugging ball 915. After the movable sleeve 901 is completely reset, the first plugging ball 915 plugs the liquid inlet cavity 911. When the movable sleeve 901 moves downward again under the pressure of the pressing plate 921, it can press the coolant inside the liquid suction cavity 910 upward. At this time, the second plugging ball 916 is in an open state during the process of the coolant passing through the communication groove 912. Then, as the movable sleeve 901 moves downward, the coolant inside the movable sleeve 901 is pressed into the liquid storage cavity 913. In this way, the coolant can be continuously delivered to the water outlet cavity 914 and enter the inside of the liquid delivery pipe 902 during the up and down movement of the movable sleeve 901.

[0055] After the coolant enters the inside of the liquid delivery pipe 902, it will be delivered through the liquid delivery pipe 902 into the inside of the liquid outlet frame 903 and finally sprayed towards the two grinding rollers 4 through the liquid outlet frame 903. When a bar 5 is placed between the two grinding rollers 4, it can also be sprayed onto the outer surface of the bar 5, thereby achieving the purpose of being able to synchronously cool the grinding rollers 4 and the bar 5 during the grinding process, and then improving the grinding effect of the bar 5.

[0056] An L-shaped frame 24 is fixedly installed on the top surface of the liquid outlet frame 903. One end of the L-shaped frame 24 is fixedly connected to one side surface of the material bin 707. A guide rod 905 is fixedly connected between the first workbench 2 and the second workbench 3. A movable frame 906 is movably sleeved on the outer surface of the guide rod 905. The liquid outlet frame 903 is fixedly installed on the top surface of the movable frame 906.

[0057] During operation, when the material bin 707 moves back and forth inside the limit frame 706, it can synchronously drive the L-shaped frame 24 to move synchronously. Since the liquid outlet frame 903 is fixedly installed on the top surface of the movable frame 906, and the movable frame 906 is movably sleeved on the outer surface of the guide rod 905, when the material bin 707 moves back and forth, it can drive the liquid outlet frame 903 to move back and forth between the workbench 1 2 and the workbench 2 3, so that the coolant sprayed by the spray pipe 904 can spray a larger coverage area, thereby further improving the cooling effect during grinding.

[0058] Specifically, the working process or working principle of the centerless grinder for grinding rods is as follows: when in use, the motor 2 14 is started by controlling the motor 2 14, and during the starting process of the motor 2 14, the driving gear 15 can be driven to rotate, and then one of the driven gears 17 can be driven to rotate. Since the two driven gears 17 are meshed with each other, the two rotating shafts 2 16 can be driven to rotate, thereby driving the two grinding rollers 4 to rotate. At this time, when the rod 5 is placed between the two grinding rollers 4, the outer surface of the rod 5 can be ground. When the connecting rod 2 809 is moved along with the tooth plate 1 803 on the extension frame 8 When the inside of the material bin 707 moves in the direction of the connecting rod 3 810, the baffle 705 can be driven to move synchronously in the material rack 704, that is, the baffle 705 moves in the direction of the connecting rod 3 810 in the material rack 704, until one end of the baffle 705 moves to the inside of the limit frame 2 713, the inside of the material rack 704 can be unblocked, so that the rods 5 placed in the silo 707 can fall into the inside of the material rack 704, and then can fall between the two grinding rollers 4 through the material rack 704, so that the rods 5 can be automatically added to the two grinding rollers 4. The purpose of the grinding roller 4 is that when the connecting rod 3 810 drives the extension rod 21 to move back and forth inside the cooling box 6, the movable sleeve 901 can move up and down on the outer surface of the column 907. During the up and down movement, the cooling liquid inside the movable sleeve 901 is pumped into the liquid storage chamber 913, and so on. Finally, the cooling liquid can be continuously transported to the water outlet chamber 914 and enter the inside of the liquid infusion tube 902 during the up and down movement of the movable sleeve 901, thereby realizing the synchronous cooling of the grinding roller 4 and the rod 5 during the grinding process. In order to improve the grinding effect of the rod 5, when the tooth plate 803 moves back and forth, it can drive the connecting rod 3 810 to move back and forth inside the cooling box 6. Since the connecting rod 3 810 is located at one end inside the cooling box 6 and is fixed with a cross plate 20, it can drive the cross plate 20 to move synchronously, and then drive the extension rod 21 and the toggle plate 22 installed on one side of the cross plate 20 to move back and forth, and to toggle the coolant stored in the cooling box 6, which can effectively prevent the coolant from precipitating inside the cooling box 6, thereby improving the cooling effect of the grinding roller 4 and the rod 5.

[0059] It should be noted that the first motor 11 and the second motor 14 are devices or equipment existing in the prior art, or devices or equipment that can be realized by the prior art. Their power supply, specific composition and principle are clear to those skilled in the art, so they will not be elaborated in detail.

Claims

1. An centerless grinding machine for grinding bars, comprising a main frame body (1), characterized in that, A workbench 1 (2) and a workbench 2 (3) are fixedly mounted on the top surface of the main frame (1). A rotating shaft 2 (16) is rotatably mounted inside the workbench 1 (2) and the workbench 2 (3). A grinding roller (4) is fixedly mounted on the outer surface of the rotating shaft 2 (16). A rod (5) is placed between the two grinding rollers (4). A driven gear (17) is fixedly mounted on one end of the two rotating shafts (16). The two driven gears (17) are meshed with each other. A motor 2 (14) is fixedly mounted on the top surface of the main frame (1). A driving gear (15) is fixedly mounted on the output end of the motor 2 (14). The driving gear (15) is meshed with one of the driven gears (17). An automatic unloading assembly (7) and a driving assembly (8) are arranged on the top surfaces of the workbench 1 (2) and the workbench 2 (3). A cooling box (6) is fixedly mounted on the top surface of the workbench 1 (2). A cooling assembly (9) is arranged inside the cooling box (6). The driving assembly (8) comprises a vertical plate (801), a rotating shaft (804) is rotatably mounted inside the vertical plate (801), one end of the rotating shaft (804) extends to the top of one of the driven gears (17), a pulley (18) is fixedly mounted on a side surface of one of the driven gears (17) and one end of the rotating shaft (804), a transmission belt (19) is sleeved between the two pulleys (18), and the driving assembly (8) is configured to transmit the automatic unloading assembly (7) and the cooling assembly (9); Two extension frames (802) are installed on one side surface of the vertical plate (801), and toothed plates (803) are movably connected inside the two extension frames (802). The vertical plate (801) is rotatably installed with mounting shafts (806) on both sides of toothed plates (803). Gears (807) and half toothed discs (808) are fixedly installed on the outer surfaces of the mounting shafts (806). Gears (805) are fixedly installed on one end of the rotating shaft (804). Gears (805) and the two gears (807) are meshed with each other. The two half toothed discs (808) are indirectly meshed with toothed plates (803). Connecting rods (809) and (810) are fixedly installed at both ends of toothed plates (803). One end of the third connecting rod (810) extends into the interior of the cooling box (6); a transverse plate (20) is fixedly mounted on the end of the third connecting rod (810) extending into the interior of the cooling box (6); an extension rod (21) is fixedly mounted on one side surface of the transverse plate (20); a plurality of toggle plates (22) are fixedly mounted on the outer surfaces of the two extension rods (21); and a plurality of through holes (23) are formed through one side surface of the plurality of toggle plates (22); The automatic unloading assembly (7) comprises a mounting plate (701), the mounting plate (701) being fixedly mounted on the top surfaces of the first workbench (2) and the second workbench (3), a unloading rack (704) being fixedly mounted inside the mounting plate (701), and the automatic unloading assembly (7) is configured for automatic unloading of the bar material (5); A support rod (702) is fixedly mounted on the top surface of the mounting plate (701), a top plate (703) is fixedly mounted on the top surface of the support rod (702), a limiting frame (706) is fixedly mounted on the top surface of the top plate (703), a material bin (707) is movably connected to the inner side of the limiting frame (706), a baffle (705) is movably connected to the inside of the unloading frame (704), a side surface of the baffle (705) is fixedly connected to one end of the second connecting rod (809), both side surfaces of the unloading frame (704) are fixedly mounted with fixing blocks (710), a connecting rod (712) is fixedly mounted on one side surface of the fixing block (710), a limiting frame (713) is fixedly mounted on one side surface of the connecting rod (712), and the baffle (705) is movably connected to the inside of the limiting frame (713); The cooling component (9) comprises two movable sleeves (901), and the two movable sleeves (901) are both arranged inside the cooling box (6). The cooling component (9) is arranged to transport the coolant inside the cooling box (6).

2. The centerless grinding machine for bar grinding according to claim 1, characterized in that, A snap-fit ​​groove (708) is formed inside the top plate (703), and a connecting plate (709) is movably snap-fitted inside the snap-fit ​​groove (708). One end of the connecting plate (709) is fixedly connected to the bottom surface of the silo (707), and the other end of the connecting plate (709) is fixedly connected to the top surface of the second connecting rod (809).

3. The centerless grinding machine for bar grinding according to claim 2, characterized in that, A spring (917) is fixedly connected between the bottom surface of the movable sleeve (901) and the inner bottom surface of the cooling box (6); a column (907) is arranged on the inner side of the spring (917); the column (907) is fixedly mounted on the inner bottom surface of the cooling box (6); the column (907) is movably sleeved inside the movable sleeve (901); a plurality of liquid inlet grooves (918) are provided on the bottom surface of the column (907); a liquid inlet cavity (911) is provided inside the column (907); A sealing ball 1 (915) is placed on the top surface of the column (907), and a partition (909) is fixedly installed inside the movable sleeve (901). The partition (909) isolates the interior of the movable sleeve (901) from the liquid suction chamber (910) and the liquid storage chamber (913). A connecting groove (912) is provided inside the partition (909), and a water outlet chamber (914) is provided above the liquid storage chamber (913). A sealing ball 2 (916) is placed above the partition (909).

4. The centerless grinding machine for bar grinding according to claim 3, characterized in that, A rotating column (919) is rotatably installed on the inner bottom surface of the cooling box (6). The rotating column (919) is located between the two movable sleeves (901). A third gear (922) is fixedly installed on the outer surface of the rotating column (919). A turntable (920) is fixedly installed on the outer surface of the rotating column (919). Two pressing plates (921) are fixedly installed on the bottom surface of the turntable (920). One end of one of the extension rods (21) is fixedly installed with a mounting bracket (923).

5. An endless grinding machine for grinding bars according to claim 4, characterized in that, A connecting block (924) is fixedly installed on one side surface of the mounting bracket (923). A second toothed plate (925) is fixedly installed on one side surface of the connecting block (924). The second toothed plate (925) meshes with the third gear (922).

6. The centerless grinding machine for bar grinding according to claim 5, wherein, A liquid infusion pipe (902) is fixedly connected to the outer surface of the movable sleeve (901) at the water outlet cavity (914). One end of the liquid infusion pipe (902) extends between the first workbench (2) and the second workbench (3). A liquid outlet rack (903) is arranged between the first workbench (2) and the second workbench (3). One end of the liquid infusion pipe (902) extending between the first workbench (2) and the second workbench (3) is fixedly connected to one side surface of the liquid outlet rack (903). A liquid spraying pipe (904) is fixedly connected to one side surface of the liquid outlet rack (903).

7. An centerless grinding machine for bar grinding according to claim 6, characterized in that, An L-shaped bracket (24) is fixedly installed on the top surface of the liquid outlet rack (903). One end of the L-shaped bracket (24) is fixedly connected to one side surface of the material bin (707). A guide rod (905) is fixedly connected between the first workbench (2) and the second workbench (3). A movable frame (906) is movably sleeved on the outer surface of the guide rod (905). The liquid outlet rack (903) is fixedly installed on the top surface of the movable frame (906).

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