Full-automatic ball grinding device

Abstract

According to the technical scheme, the full-automatic ball grinding device is characterized in that the full-automatic ball grinding device comprises a machine base, a feeding mechanism, a grinding mechanism and a discharging mechanism are arranged on the machine base, the feeding mechanism comprises an obliquely-arranged material frame, the outlet end of the material frame is provided with a vertically-arranged preparation bin, and the preparation bin is provided with a front-back-through outlet; an ejector rod is arranged on one side of the front end of the outlet; the grinding mechanism comprises a grinding wheel and a movable frame capable of moving and deflecting on the machine base, the movable frame moves beside the grinding wheel and between the rear end of the outlet and the discharging mechanism, and a rotating shaft is arranged on the movable frame. The ball grinding device can fully automatically grind balls, saves labor and is high in production efficiency.

Description

Technical Field

[0001] The invention relates to the technical field of valve ball processing, and more specifically to a full-automatic ball grinding device. Background Art

[0002] Ball valves are mainly used in pipelines to cut off, distribute and change the flow direction of the medium. They can be closed tightly by rotating 90 degrees. They are a type of valve widely used in oil refining, chemical industry, water conservancy and electricity industries. The plug body of the ball valve is a sphere with a circular through hole or channel passing through its axis. In the production and processing of ball valves, after the ball of the ball valve is roughly processed into a spherical shape, it needs to be polished to remove the protrusions on the surface of the sphere before subsequent processing.

[0003] At present, the existing grinding of spheres still mainly relies on semi-automatic equipment. For example, Chinese patent CN202021263040.2 discloses a grinding device for ball valve sphere processing, which has the function of automatic grinding. However, the loading and unloading of the sphere still needs to rely on manual assistance. Due to the limitation of manual labor, the processing efficiency cannot be improved. In addition, manual labor is monotonous and repetitive, and the labor intensity is also very high, which needs to be improved. Summary of the invention

[0004] In view of the deficiencies in the prior art, the present invention provides a fully automatic ball grinding device, which can fully automatically grind the ball, save labor and have high production efficiency.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a fully automatic ball grinding device, comprising a machine base, on which a feeding mechanism, a grinding mechanism and a discharging mechanism are arranged, the feeding mechanism comprises an inclined material rack, the outlet end of the material rack is provided with a vertically arranged preparation bin, the preparation bin is provided with an outlet that passes through from front to back, and a material ejecting rod is provided on one side of the front end of the outlet; the grinding mechanism comprises a grinding wheel and a movable frame that can be moved and deflected on the machine base, the movable frame moves beside the grinding wheel, between the rear end of the outlet and the discharging mechanism, and a rotating shaft is provided on the movable frame;

[0006] When the movable frame is located at the rear end of the outlet, the ejector rod ejects the sphere from the rear end of the outlet and onto the rotating shaft;

[0007] When the movable frame is located beside the grinding wheel, the grinding wheel and the rotating shaft rotate, and the movable frame reciprocates to grind the ball;

[0008] When the movable frame is located at the discharging mechanism, the polished sphere leaves the device through the discharging mechanism.

[0009] The present invention is further configured as follows: a movable partition member is provided on one side of the preparation bin, the partition member corresponds to the outlet and includes a first partition and a second partition arranged in an L shape, the first partition and the second partition are respectively used to block the upper and rear ends of the outlet.

[0010] The present invention is further configured as follows: a wax replenishing wheel is arranged on the grinding wheel, and the wax replenishing wheel is arranged to slide up and down to abut against or move away from the grinding wheel.

[0011] The present invention is further configured as follows: the polishing device includes a vertical plate, a slide rail is fixedly arranged on the vertical plate, a movable plate is arranged on the slide rail, the wax replenishing wheel is arranged on the movable plate, a counterweight pulling mechanism and a cylinder are arranged on the movable plate, the counterweight pulling mechanism is used to drive the wax replenishing wheel away from the polishing wheel, and the cylinder is used to drive the wax replenishing wheel to rest against the polishing wheel.

[0012] The present invention is further configured as follows: the discharging device includes a discharging chute and a push plate arranged on a movable frame, the push plate is sleeved on the rotating shaft and can move axially relative to the rotating shaft, and is used to push the ball on the rotating shaft from the rotating shaft and drop it into the discharging chute.

[0013] The present invention is further configured as follows: a lowering mechanism is provided at the end of the discharging chute, and the lowering mechanism is used to lower the sphere into an external storage box.

[0014] The present invention is further configured as follows: the lowering mechanism comprises a material leakage port and a lowering bucket, the lowering bucket can be raised and lowered to lower the sphere into the storage box, and the lowering bucket is tilted after being lowered to allow the sphere to be poured into the storage box.

[0015] The present invention is further configured as follows: a cavity is provided in the rotating shaft, a movable support piece is provided on the circumference of the cavity, a telescopic rod with an inclined surface is provided in the cavity, and the inclined surface of the telescopic rod allows the movable support piece to move in the radial direction of the rotating shaft.

[0016] The present invention is further configured as follows: a spiral groove and a spring are provided in the cavity, two ends of the spring respectively abut against the bottom of the cavity and the end of the telescopic rod, and the telescopic rod is provided with a pin that is engaged in the spiral groove. When the rotating shaft rotates, the pin is driven to slide in the spiral groove by inertia, and the telescopic rod is contracted.

[0017] The present invention is further configured as follows: a linear slide is arranged on the machine base, a bearing platform is arranged at the end of the linear slide, a mounting hole is arranged on the bearing platform, a rotating shaft is arranged in the mounting hole, a movable frame is arranged above the rotating shaft, and a servo motor is arranged below the rotating shaft.

[0018] In summary, the present invention has the following beneficial effects:

[0019] The movable frame of the present invention can be moved to the feeding mechanism, and the feeding mechanism pushes the sphere at the outlet of the preparation bin onto the rotating shaft through the ejection rod, and then the movable frame moves to the grinding mechanism, and the movable frame is deflected by the servo motor under the rotating shaft, and cooperates with the grinding wheel to grind the sphere. After the processing is completed, the movable frame moves to the discharging station, and the push plate pushes the sphere from the rotating shaft into the discharging slideway to realize the discharging. Therefore, the present invention realizes fully automated sphere grinding processing by setting the feeding mechanism, the grinding mechanism and the discharging mechanism, which greatly improves the processing efficiency and reduces the labor intensity. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of the device.

[0021] Figure 2 It is a structural diagram of the feeding mechanism.

[0022] Figure 3 It is a structural diagram of the grinding mechanism.

[0023] Figure 4 It is a structural diagram of the discharging mechanism.

[0024] Figure 5 It is a schematic diagram of the cross-sectional structure of the lowering mechanism.

[0025] Figure 6 It is a schematic diagram of the cross-sectional structure when the lowering mechanism is lowered.

[0026] Figure 7 It is a schematic diagram of the cross-sectional structure of the movable frame.

[0027] Figure numerals: 1, machine base; 2, feeding mechanism; 201, material rack; 202, preparation bin; 2021, outlet; 203, ejector rod; 3, grinding mechanism; 301, movable frame; 3011, rotating shaft; 302, grinding wheel; 4, discharging mechanism; 401, discharging slide; 402, pushing plate; 5, partition member; 501, first partition; 502, second partition; 6, wax filling wheel; 7, vertical plate; 701, slide rail; 702, Movable plate; 703, counterweight pulling mechanism; 704, cylinder; 8, lowering mechanism; 801, leakage port; 802, lowering bucket; 8021, lifting cylinder; 8022, tilting cylinder; 9, linear slide; 901, bearing platform; 902, mounting hole; 903, rotating shaft; 904, servo motor; 10, cavity; 1001, spiral slide; 1002, spring; 11, movable support plate; 12, telescopic rod; 1201, latch. DETAILED DESCRIPTION

[0028] The present invention is further described in detail below in conjunction with the accompanying drawings.

[0029] This embodiment discloses a fully automatic ball grinding device, such as Figure 1-7 As shown, the machine base 1 includes a feeding mechanism 2, a grinding mechanism 3 and a discharging mechanism 4. The feeding mechanism 2 includes an inclined material rack 201, which is used to store the valve core balls to be processed. The material rack 201 can be automatically fed with materials by an existing manipulator device, or manually fed (since the material rack 201 can store about 10-20 balls, there is enough time for manual feeding, and the processing efficiency will not be affected). A vertical preparation bin 202 is provided at the outlet end of the material rack 201, and the balls to be processed in the material rack 201 will fall into the preparation bin 202. The preparation bin 202 is provided with an outlet 2021 that passes through from front to back, and a ejector rod 203 is provided on one side of the front end of the outlet 221; the ball can be ejected from the rear end of the outlet 221 by the action of the ejector rod 203.

[0030] The grinding mechanism 3 includes a grinding wheel 302 and a movable frame 301 that is movable and deflectable on the machine base 1. The movable frame 301 moves between the grinding wheel 302, the rear end of the outlet 2021 and the discharging mechanism 4. The movable frame 301 is provided with a rotating shaft 3011. Specifically, when the movable frame 301 moves to the corresponding position, the following functions are realized:

[0031] When the movable frame 301 is located at the rear end of the outlet, the ejector rod 203 ejects the sphere from the rear end of the outlet 2021 and onto the rotating shaft 3011;

[0032] When the movable frame 301 is located beside the grinding wheel 302, the grinding wheel and the rotating shaft both rotate, and the movable frame reciprocates to grind the ball;

[0033] When the movable frame 301 is located at the discharging mechanism 4 , the polished sphere leaves the device through the discharging mechanism 4 .

[0034] Therefore, the movable frame 3011, as a key component of the present invention, drives the ball to move between various mechanisms, realizing the fully automatic grinding processing of feeding, grinding and discharging, thereby reducing the intensity of manual labor and improving work efficiency.

[0035] Further, in order to avoid interference of the balls on the preparation bin 202 with the balls when the ejection rod 203 is ejecting the materials, refer to Figure 2A movable partition member 5 is provided on one side of the preparation bin 202. The partition member 5 corresponds to the outlet 2021 and includes a first partition 501 and a second partition 502 arranged in an L shape. The first partition 501 and the second partition 502 are respectively used to block the upper and rear ends of the outlet 2021. When the ejecting rod 203 ejects the material, the first partition 501 is pushed forward to block the upper sphere, and the second partition 502 is retracted to leave the outlet 2021; and when the ejecting rod 203 returns to its original position, the second partition 502 is pushed out to block the outlet 2021, and then the first partition 501 is retracted to allow the upper sphere to fall again.

[0036] Furthermore, the grinding wheel 302 of the grinding device 3 is a flexible polishing wheel. As the polishing operation proceeds, the polishing wax on its surface will gradually be consumed, and it is necessary to regularly add wax to the grinding wheel. Figure 3 A wax filling wheel 6 is arranged above the grinding wheel 302, and the wax filling wheel 6 is arranged to slide up and down, and is used to abut against or away from the grinding wheel 302. Specifically, the grinding device 3 includes a vertical plate 7, a slide rail 701 is fixedly arranged on the vertical plate 7, a movable plate 702 is arranged on the slide rail 701, and the movable plate 702 can slide up and down, and the wax filling wheel 6 is arranged on the movable plate 702, and a counterweight pulling mechanism 703 and a cylinder 704 are arranged on the movable plate. The counterweight pulling mechanism 703 is used to drive the wax filling wheel 6 away from the grinding wheel, and the cylinder 704 is used to drive the wax filling wheel 6 to abut against the grinding wheel. After using the counterweight pulling mechanism 703, in the absence of other forces, the wax filling wheel 6 will always be away from the grinding wheel 302 due to the gravity of the counterweight. Since the wax filling wheel 6 is away from the grinding wheel 302 most of the time, using gravity to pull is the most energy-saving. When wax filling is needed, the cylinder 704 is pulled down to allow the wax filling wheel 6 to briefly contact the rotating grinding wheel for a period of time, so that the circumference of the grinding wheel 302 is in contact with the wax filling wheel 6 and wax filling is completed. It should be noted that a brake mechanism should also be provided on the wax filling wheel 6 to ensure that it will not rotate with the grinding wheel when it contacts the grinding wheel. At the same time, after the contact side of the wax filling wheel is worn for a period of time, the brake mechanism can be released and the wax filling wheel can be adjusted to rotate by an angle.

[0037] Further, see Figure 4 The discharging device 4 includes a discharging chute 401 and a push plate 402 arranged on the movable frame 301. The push plate 402 is sleeved on the rotating shaft 3011 and can move axially relative to the rotating shaft 3011, and is used to push the ball on the rotating shaft 3011 from the rotating shaft and drop it into the discharging chute 401. The push plate 402 is initially located on the inner side of the rotating shaft 3011, and the ball is installed on the outer side of the rotating shaft 3011. Therefore, when the push plate 402 is pushed from the inside to the outside, the ball will be pushed out from the rotating shaft 3011, and the push plate 402 will be reset after being pushed out.

[0038] Furthermore, the surface of the discharge chute 401 is wrapped with a flexible rubber material to protect the polished sphere from being damaged due to rolling in the discharge chute 401. A lowering mechanism 8 is provided at the end of the discharge chute 401. The lowering mechanism 8 is used to lower the sphere into an external storage box. For cost considerations, the storage box is generally not wrapped with flexible rubber, so the lowering mechanism 8 is required to lower the sphere for a distance so that it is as close to the storage box as possible to reduce the impact of falling.

[0039] Further, see Figure 5-6 The lowering mechanism 8 specifically includes a material leaking port 801 and a lowering bucket 802. The lowering bucket 802 is controlled by a lifting cylinder 8021 to achieve up and down movement, and is used to lower the spheres into the storage box to reduce the drop height. After the lowering bucket 802 is lowered, it is controlled by a tilting cylinder 8022 to tilt the lowering bucket 802 and pour the spheres into the storage box. The lifting cylinder 8021 and the tilting cylinder 8022 are both connected to the lowering bucket 802 by ropes, and the lifting cylinder 8021 controls the tilting cylinder 8022 to move at the same time.

[0040] Further, see Figure 7 In order to ensure the stability of the ball on the rotating shaft 3011, a cavity 10 is provided in the rotating shaft 3011, and a movable support sheet 11 is provided on the circumference of the cavity 10. Preferably, four movable support sheets 11 are provided, which are respectively located on four sides. The movable support sheets 11 are made of deformable metal materials, and the outer surface can be covered with rubber or the like to increase friction. A telescopic rod 12 with an inclined surface is provided in the cavity 10, and the inclined surface of the telescopic rod 12 can make the movable support sheet 11 move in the radial direction of the rotating shaft 3011. Specifically, when the telescopic rod 12 retracts, the movable support sheet 11 is expanded outward by the action of the inclined surface, so as to limit and fix the ball; when the telescopic rod 12 is extended, the metal material is reset by its own elasticity, and the ball can be easily removed from the rotating shaft 3011.

[0041] Further, the cavity 10 is provided with a spiral chute 1001 and a spring 1002, the two ends of the spring respectively abut against the bottom of the cavity 10 and the end of the telescopic rod 12, and the telescopic rod 12 is provided with a latch 1201 that is engaged with the spiral chute 1001. When the rotating shaft 3011 rotates, the telescopic rod 12 does not rotate due to inertia, so the latch 1002 will slide in the spiral chute 1001 by the effect of inertia. The spiral chute 1001 is along the positive rotation direction of the rotating shaft 3011 and extends into the cavity 10, so under the effect of the spiral chute 1001, the telescopic rod 12 will be contracted, and when the rotating shaft 3011 keeps rotating, the telescopic rod 12 will also keep in a contracted state. When the rotation stops, the telescopic rod 12 and its latch 1201 will be reset by the spring 1002 under the effect of the spring, and accordingly, the subsequent push plate 402 can also smoothly push out the polished sphere.

[0042] Furthermore, a linear slide 9 is provided on the machine base 1, a bearing platform 901 is provided at the end of the linear slide 9, a mounting hole 902 is provided on the bearing platform 901, a rotating shaft 903 is provided in the mounting hole 902, a movable frame 301 is installed above the rotating shaft 903, and a servo motor is installed below. The movable frame 301 is driven to move between the various stations by the linear slide 9, and the movable frame 301 is deflected during grinding by the servo motor 904. The angle of reciprocating deflection is adjusted according to the arc surface of the sphere to be ground, as long as the entire arc outer surface of the sphere can be covered.

[0043] It should be noted that the present invention omits the description of the corresponding air circuits, circuits and specific devices, because the rotation, deflection and movement of the mechanisms mentioned in the present invention, unless otherwise specified, are all implemented using mature rotary motors, servo motors, cylinders, electric cylinders, linear motors or lead screws and other devices in the art, and the circuit and air circuit control aspects also use mature technologies in the art.

[0044] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the design concept of the present invention should be included in the protection scope of the present invention.

Claims

1. A fully automatic ball grinding device, comprising a machine base (1), characterized in that: The machine base (1) is provided with a feeding mechanism (2), a grinding mechanism (3) and a discharging mechanism (4); the feeding mechanism (2) comprises a tilted material rack (201); a vertically arranged preparation bin (202) is arranged at the outlet end of the material rack (201); the preparation bin (202) is provided with an outlet (2021) that passes through from front to back; a material ejecting rod (203) is arranged on one side of the front end of the outlet (2021); the grinding mechanism (3) comprises a grinding wheel (302) and a movable frame (301) that is movable and deflectable on the machine base (1); the movable frame (301) moves beside the grinding wheel (302), between the rear end of the outlet (2021) and the discharging mechanism (4); a rotating shaft (3011) is arranged on the movable frame (301); When the movable frame (301) is located at the rear end of the outlet, the ejector rod (203) ejects the sphere from the rear end of the outlet (2021) and onto the rotating shaft (3011); When the movable frame (301) is located next to the grinding wheel (302), the grinding wheel and the rotating shaft rotate, and the movable frame reciprocates to grind the sphere; When the movable frame (301) is located at the discharging mechanism (4), the polished sphere leaves the device through the discharging mechanism (4).

2. The fully automatic ball grinding device according to claim 1, characterized in that: A movable partition member (5) is provided on one side of the preparation bin (202), the partition member (5) corresponding to the outlet (2021) and comprising a first partition (501) and a second partition (502) arranged in an L shape, the first partition (501) and the second partition (502) being used to block the upper side and the rear end of the outlet (2021), respectively.

3. The fully automatic ball grinding device according to claim 1, characterized in that: The grinding wheel (302) is provided with a wax replenishing wheel (6), and the wax replenishing wheel (6) is slidably arranged up and down to abut against or move away from the grinding wheel (302).

4. The fully automatic ball grinding device according to claim 3, characterized in that: The grinding device (3) comprises a vertical plate (7), a slide rail (701) is fixedly arranged on the vertical plate (7), a movable plate (702) is arranged on the slide rail (701), the wax replenishing wheel (6) is arranged on the movable plate (702), a counterweight pulling mechanism (703) and a cylinder (704) are arranged on the movable plate, the counterweight pulling mechanism (703) is used to drive the wax replenishing wheel (6) away from the grinding wheel, and the cylinder (704) is used to drive the wax replenishing wheel (6) to abut against the grinding wheel.

5. The fully automatic ball grinding device according to claim 1, characterized in that: The discharging device (4) comprises a discharging chute (401) and a pushing plate (402) arranged on a movable frame (301); the pushing plate (402) is sleeved on the rotating shaft (3011) and can move axially relative to the rotating shaft (3011), and is used to push the ball on the rotating shaft (3011) off the rotating shaft and drop it into the discharging chute (401).

6. The fully automatic ball grinding device according to claim 5, characterized in that: A lowering mechanism (8) is provided at the end of the discharge chute (401), and the lowering mechanism (8) is used to lower the sphere into an external storage box.

7. The fully automatic ball grinding device according to claim 6, characterized in that: The lowering mechanism (8) comprises a material discharge port (801) and a lowering bucket (802). The lowering bucket (802) can be raised and lowered to lower the spheres into the storage box. The lowering bucket (802) is tilted after being lowered so that the spheres are poured into the storage box.

8. The fully automatic ball grinding device according to claim 1, characterized in that: A cavity (10) is arranged in the rotating shaft (3011), a movable support piece (11) is arranged on the peripheral side of the cavity (10), and a telescopic rod (12) with an inclined surface is arranged in the cavity (10), and the inclined surface of the telescopic rod (12) enables the movable support piece (11) to move in the radial direction of the rotating shaft (3011).

9. The fully automatic ball grinding device according to claim 8, characterized in that: The cavity (10) is provided with a spiral groove (1001) and a spring (1002), the two ends of the spring respectively abut against the bottom of the cavity (10) and the end of the telescopic rod (12), the telescopic rod (12) is provided with a latch (1201) which is engaged with the spiral groove (1001), and when the rotating shaft rotates, the latch (1201) is driven to slide in the spiral groove (1001) by inertia, and the telescopic rod is retracted.

10. The fully automatic ball grinding device according to claim 1, characterized in that: A linear slide (9) is arranged on the machine base (1), a bearing platform (901) is arranged at the end of the linear slide (9), a mounting hole (902) is arranged on the bearing platform (901), a rotating shaft (903) is arranged in the mounting hole (902), a movable frame (301) is arranged above the rotating shaft (903), and a servo motor is arranged below the rotating shaft (903).

Images