Ceramic utensil automatic bottom grinding equipment with grinding force control function

Abstract

Automatic ceramic utensil bottom grinding equipment with a grinding force control function comprises a rack and a workbench, the workbench is arranged above the rack, a rotary table is rotatably arranged on the table top of the workbench, a rotary table driver is used for driving the rotary table to rotate by a set angle, and a plurality of self-centering clamping assemblies are evenly distributed on the table face of the rotary table in a circumferential mode. The self-centering clamping assembly is used for rapidly clamping and positioning a to-be-ground ceramic appliance, the lifting table and the lifting driver are both arranged above the workbench, the lifting driver drives the lifting table to do lifting motion in the vertical direction, and the rotary grinding assembly is arranged on the lifting table and used for accurately grinding the to-be-ground ceramic appliance. The rotary grinding assembly comprises a rotary main shaft suspended on the lifting table through a baffle spring, a rotary driver for driving the rotary main shaft to rotate and a pressing actuator for pressing the rotary main shaft, a grinding sand disc is arranged at the lower end of the rotary main shaft, and the preset elastic load of the baffle spring is the sum of the weight of the rotary main shaft and the weight of the grinding sand disc.

Description

Technical Field

[0001] The invention relates to automatic bottom grinding equipment for ceramic tools with a grinding force control function. Background Art

[0002] Ceramic utensils are containers for holding things formed by high-temperature firing of clay, generally in the shape of bowls or plates. Traditional ceramic utensils are prone to local deformation after firing, especially when the bottom surface is uneven. During the subsequent placement and use, there will be shaking, tilting and other conditions, affecting people's experience of use. The current production workshop also has bottom grinding equipment for ceramic utensils, but it basically still relies on manual or semi-automatic grinding, and there are problems such as high labor intensity, unadjustable grinding force, and low grinding accuracy. Enterprises urgently need an automatic bottom grinding equipment for ceramic utensils with grinding force control function, which can not only solve the problem of large demand for grinding labor, but also improve grinding accuracy and ensure product consistency. This is of great significance for enterprises to improve product quality and reduce production costs. Summary of the invention

[0003] In view of the shortcomings existing in the above problems, the present invention provides an automatic bottom grinding device for ceramic tools with a grinding force control function.

[0004] To achieve the above object, the present invention provides a ceramic tool automatic bottom grinding device with a grinding force control function, comprising: A frame and a workbench, wherein the workbench is arranged above the frame; A turntable and a turntable driver, wherein the turntable is rotatably arranged on the table surface of the workbench, and the turntable driver is used to drive the turntable to rotate at a set angle; A self-centering clamping assembly, wherein a plurality of the self-centering clamping assemblies are evenly distributed on the surface of the turntable in a circumferential manner, and the self-centering clamping assembly is used for fast clamping and positioning of ceramic tools to be ground; A lifting platform and a lifting driver, wherein the lifting platform and the lifting driver are both arranged above the workbench, and the lifting driver drives the lifting platform to perform lifting motion in a vertical direction; A rotary grinding assembly, which is arranged on the lifting platform and is used for fine grinding of the ceramic utensil to be ground; The rotary grinding assembly includes a rotary spindle suspended on the lifting platform by a force-dissipating spring, a rotary driver for driving the rotary spindle to rotate, and a pressing actuator for pressing down the rotary spindle. A grinding sand disc is arranged at the lower end of the rotary spindle, and the preset elastic load of the force-dissipating spring is the sum of the weight of the rotary spindle and the grinding sand disc.

[0005] Furthermore, a central shaft is fixedly connected to the lower middle portion of the turntable, and the turntable driver is a cam divider.

[0006] Furthermore, there are three self-centering clamping assemblies, which include a rotary cylinder as a driving source, and a plurality of arc-shaped clamping jaws driven by the rotary cylinder to realize clamping and releasing functions, and the ends of the arc-shaped clamping jaws are provided with locking claws.

[0007] Furthermore, the self-centering clamping assembly also includes a bottom cover, a bottom plate, and a placement cover fixedly connected to the turntable. The bottom cover has a built-in transmission gear set to achieve a transmission connection between the rotating cylinder and the arc-shaped clamping claw, and the placement cover is processed with an arc-shaped groove for guiding the positioning claw.

[0008] Furthermore, the lifting drive includes a guide frame vertically installed on the workbench, a lifting motor arranged on the guide frame, and a lifting screw driven by the lifting motor. A lifting slider is threadedly connected to the lifting screw, and the lifting slider is fixedly connected to the lifting platform.

[0009] Furthermore, the rotary drive includes a rotary motor, a driving wheel, a transmission belt, a driven wheel, an intermediate connecting piece, a bearing a, and a spline sleeve. The inner wall of the spline sleeve is processed with an internal spline and cooperates with the rotary main shaft through a spline. The spline sleeve is fixedly connected to the driven wheel via the intermediate connecting piece. The intermediate connecting piece can be rotatably arranged on the lifting platform via the bearing a. The rotary motor is fixed on the lifting platform at the other end away from the rotary main shaft. The rotary motor rotates the rotary main shaft via the driving wheel, the transmission belt, the driven wheel, the intermediate connecting piece, and the spline sleeve.

[0010] Furthermore, the downward pressure actuator includes a downward pressure cylinder mounting frame fixed on the lifting platform and a downward pressure cylinder arranged on the downward pressure cylinder mounting frame, and the shaft end of the downward pressure cylinder is matchedly connected with the upper end of the rotating main shaft through a rotating joint.

[0011] Furthermore, a pneumatic slip ring is also arranged on the central shaft.

[0012] The beneficial effects of the present invention compared to the prior art are: 1. Since the preset elastic load of the force-dissipating spring is approximately the sum of the weights of the rotating spindle and the grinding sand disc, the force-dissipating spring is only slightly deformed during grinding, and the pressing force of the grinding sand disc on the ceramic ware to be ground is basically provided by the downward pressure cylinder, and the downward pressure of the downward pressure cylinder can be adjusted by proportional servo control to adjust the intake pressure to achieve precise adjustment, that is, the grinding force during grinding can be precisely adjusted, and the grinding accuracy is high.

[0013] 2. The self-centering clamping assembly can quickly clamp ceramic utensils. With the intermittent rotation of the turntable, the automatic bottom grinding equipment achieves a high degree of automation and reduces the demand for labor. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 A three-dimensional diagram of an automatic bottom grinding device for ceramic tools with a grinding force control function according to the present invention; Figure 2 This is a side view of an automatic bottom grinding device for ceramic tools with a grinding force control function according to the present invention (with the frame and workbench hidden); Figure 3 is a schematic diagram of the self-centering clamping assembly involved; Figure 4 An exploded view of the self-centering clamping assembly involved; Figure 5 A schematic diagram of the lifting platform, lifting drive, and rotary grinding assembly involved; Figure 6 for Figure 5 A cross-sectional view of Figure 7 A schematic diagram of the ceramic tool to be ground.

[0015] In the figure: 1, frame; 2, workbench; 3, turntable; 31, center axis; 4, turntable driver; 5, self-centering clamping assembly; 51, rotating cylinder; 52, bottom cover; 53, bottom plate; 54, arc-shaped clamping claw; 55, placement cover; 551, arc-shaped groove; 56, positioning claw; 6, lifting platform; 7, lifting driver; 71, guide frame; 72, lifting motor; 73, lifting screw rod; 74, lifting slide block; 8, rotary grinding assembly; 81. Grinding sand disc; 82. Rotating spindle; 83. Force elimination spring; 84. Rotating drive; 841. Rotating motor; 842. Driving wheel; 843. Driving belt; 844. Driven wheel; 845. Intermediate connecting piece; 846. Spline sleeve; 847. Bearing a; 85. Down-pressing actuator; 851. Down-pressing cylinder mounting bracket; 852. Down-pressing cylinder; 853. Rotary joint; 9. Pneumatic slip ring; 10. Ceramic ware to be ground. DETAILED DESCRIPTION

[0016] like Figure 1 , Figure 2As shown, an automatic bottom grinding device for ceramic tools with a grinding force control function according to an embodiment of the present invention comprises a frame 1 and a workbench 2, wherein the workbench 2 is arranged above the frame 1; a turntable 3 is rotatably arranged on the surface of the workbench 2, and a turntable driver 4 is used to drive the turntable 3 to rotate to a set angle; three self-centering clamping assemblies 5 are evenly distributed on the surface of the turntable 3 in a circle, and the self-centering clamping assemblies 5 are used for fast clamping and positioning of the ceramic tool 10 to be ground; a lifting platform 6 and a lifting driver 7 are both arranged above the workbench 2, and the lifting driver 7 drives the lifting platform 6 to perform lifting movement in the vertical direction; a rotary grinding assembly 8 is arranged on the lifting platform 6 for fine grinding of the ceramic tool 10 to be ground.

[0017] More specifically, Figure 2 As shown, a central shaft 31 is fixedly connected to the lower middle part of the turntable 3, and the turntable driver 4 is a cam divider, which enables the turntable 3 to rotate by 120 degrees each time.

[0018] like Figure 3 , Figure 4 As shown, the self-centering clamping assembly 5 includes a rotating cylinder 51 as a driving source, and a plurality of arc-shaped clamping jaws 54 driven by the rotating cylinder 51 to realize clamping and releasing functions, and the ends of the arc-shaped clamping jaws 54 are provided with locking claws 56; the self-centering clamping assembly 5 also includes a bottom cover 52, a bottom plate 53, and a placement cover 55 fixedly connected to the turntable 3, and the bottom cover 52 is equipped with a transmission gear set to realize the transmission connection between the rotating cylinder 51 and the arc-shaped clamping jaws 54, and the placement cover 55 is processed with an arc-shaped groove 551 for guiding the locking claws 56.

[0019] like Figure 1 , Figure 5 , Figure 6 As shown, the lifting drive 7 includes a guide frame 71 vertically installed on the workbench 2, a lifting motor 72 arranged on the guide frame 71, and a lifting screw 73 driven by the lifting motor 72. A lifting slider 74 is threadedly screwed on the lifting screw 73, and the lifting slider 74 is fixedly connected to the lifting platform 6.

[0020] like Figure 5 , Figure 6 As shown, the rotary grinding assembly 8 includes a rotary spindle 82 suspended on the lifting platform 6 by a force-dissipating spring 83, a rotary driver 84 for driving the rotary spindle 82 to rotate, and a pressing actuator 85 for pressing down the rotary spindle 82. A grinding sand disc 81 is arranged at the lower end of the rotary spindle 82. The preset elastic load of the force-dissipating spring 83 is the sum of the weight of the rotary spindle 82 and the grinding sand disc 81. The rotary driver 84 includes a rotary motor 841, a driving wheel 842, a transmission belt 843, a driven wheel 844, an intermediate connecting piece 845, a bearing a847, and a spline sleeve 846. The inner wall of the spline sleeve 846 is processed with an internal spline and is matched with the rotary main shaft 82 through a spline. The spline sleeve 846 is fixedly connected with the driven wheel 844 through the intermediate connecting piece 845. The intermediate connecting piece 845 is rotatably arranged on the lifting platform 6 through the bearing a847. The rotary motor 841 is fixed on the lifting platform 6 at the other end away from the rotary main shaft 82. The rotary motor 841 rotates the rotary main shaft 82 through the driving wheel 842, the transmission belt 843, the driven wheel 844, the intermediate connecting piece 845, and the spline sleeve 846. The downward pressing actuator 85 includes a downward pressing cylinder mounting frame 851 fixed on the lifting platform 6, and a downward pressing cylinder 852 arranged on the downward pressing cylinder mounting frame 851. The shaft end of the downward pressing cylinder 852 is matchedly connected with the upper end of the rotating main shaft 82 through a rotating joint 853.

[0021] like Figure 2 As shown, a gas-electric slip ring 9 is also arranged on the central shaft 31, and the turntable 3 is driven by the turntable driver 4 (cam divider) to rotate in one direction. The lower part of the turntable 3 is provided with a rotary cylinder 51 and a corresponding electromagnetic reversing valve. Therefore, a gas-electric slip ring 9 is arranged at the central shaft 31 to switch the circuit and gas supply.

[0022] In order to facilitate the understanding of the present invention, the following description is given in conjunction with the accompanying drawings during specific use; The turntable 3 is driven by the turntable driver 4 (cam divider) to rotate in one direction, and the angle of a single rotation is 120 degrees, so that one of the self-centering clamping components 5 is aligned with the position of the grinding sand disc 81; The clamping process of the self-centering clamping assembly 5 is as follows: the rotating cylinder 51 is controlled by the electromagnetic reversing valve, and the rotating cylinder 51 drives the arc-shaped clamping jaw 54 to rotate, and the clamping claw 56 above the arc-shaped clamping jaw 54 moves along the path of the arc-shaped groove 551 of the placement cover 55, and can clamp or release the edge of the ceramic utensil 10 to be ground; Grinding process: the rotating spindle 82 is suspended on the lifting platform 6 by the force-dissipating spring 83. Since the rotating spindle 82 and the spline sleeve 846 are spline-matched, when the rotating spindle 82 moves axially, it can maintain synchronous rotation with the spline sleeve 846, and the spline sleeve 846 is driven by the rotating motor 841 through the driving wheel 842, the transmission belt 843, the driven wheel 844, and the intermediate connecting member 845 to rotate at high speed, that is, the rotating spindle 82 maintains high-speed rotation; the lifting motor 72 rotates through the lifting screw 73 to make the lifting slide 74 move downward along the guide frame 71, and the lifting movement is stopped after the grinding sand disc 81 and the ceramic tool to be ground 10 clamped on the self-centering clamping assembly 5 are close to each other; The downward pressing actuator 85 is actuated, and the downward pressing cylinder 852 applies force downward, so that the rotating spindle 82 is slightly displaced downward, that is, it is pressed against the ceramic tool 10 to be ground. At this time, the deformation of the force-relieving spring 83 can be ignored, and the downward force of the downward pressing cylinder 852 is completely applied to the ceramic tool 10 to be ground by the grinding sand disc 81. The downward force of the downward pressing cylinder 852 is a controllable air pressure, and the air intake pressure can be adjusted by proportional servo control. The grinding force applied by the grinding sand disc 81 to the ceramic tool 10 to be ground can be precisely controlled.

[0023] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An automatic bottom grinding device for ceramic tools with grinding force control function, characterized in that: include A frame (1) and a workbench (2), wherein the workbench (2) is arranged above the frame (1); A turntable (3) and a turntable driver (4), wherein the turntable (3) is rotatably arranged on the surface of the workbench (2), and the turntable driver (4) is used to drive the turntable (3) to rotate at a set angle; A self-centering clamping assembly (5), wherein the self-centering clamping assembly (5) has a plurality of components evenly distributed in a circumference on the surface of the turntable (3), and the self-centering clamping assembly (5) is used for fast clamping and positioning of the ceramic tool (10) to be ground; A lifting platform (6) and a lifting driver (7), wherein the lifting platform (6) and the lifting driver (7) are both arranged above the workbench (2), and the lifting driver (7) drives the lifting platform (6) to perform lifting movement in a vertical direction; A rotary grinding assembly (8), the rotary grinding assembly (8) being arranged on the lifting platform (6) and used for fine grinding of a ceramic utensil (10) to be ground; The rotary grinding assembly (8) comprises a rotary spindle (82) suspended on the lifting platform (6) by a force-dissipating spring (83), a rotary drive (84) for driving the rotary spindle (82) to rotate, and a pressing actuator (85) for pressing down the rotary spindle (82); a grinding sand disc (81) is arranged at the lower end of the rotary spindle (82); and a preset elastic load of the force-dissipating spring (83) is the sum of the weights of the rotary spindle (82) and the grinding sand disc (81).

2. The automatic bottom grinding device for ceramic tools with grinding force control function according to claim 1, characterized in that: A central shaft (31) is fixedly connected to the lower middle portion of the turntable (3), and the turntable driver (4) is a cam divider.

3. The automatic bottom grinding device for ceramic tools with grinding force control function according to claim 2, characterized in that: There are three self-centering clamping assemblies (5), each of which comprises a rotary cylinder (51) as a driving source, and a plurality of arc-shaped clamping jaws (54) driven by the rotary cylinder (51) to realize clamping and loosening functions, wherein the ends of the arc-shaped clamping jaws (54) are provided with positioning jaws (56).

4. The automatic bottom grinding device for ceramic tools with grinding force control function according to claim 3, characterized in that: The self-centering clamping assembly (5) further comprises a bottom cover (52), a bottom plate (53), and a placement cover (55) fixedly connected to the rotating disk (3); the bottom cover (52) has a built-in transmission gear set to achieve transmission connection between the rotating cylinder (51) and the arc-shaped clamping claw (54); and the placement cover (55) is machined with an arc-shaped groove (551) for guiding the positioning claw (56).

5. The automatic bottom grinding device for ceramic tools with grinding force control function according to claim 1, characterized in that: The lifting drive (7) comprises a guide frame (71) vertically mounted on the workbench (2), a lifting motor (72) arranged on the guide frame (71), and a lifting screw (73) driven by the lifting motor (72); a lifting slider (74) is screwed onto the lifting screw (73); and the lifting slider (74) is fixedly connected to the lifting platform (6).

6. The automatic bottom grinding device for ceramic tools with grinding force control function according to claim 4, characterized in that: The rotary drive (84) comprises a rotary motor (841), a driving wheel (842), a transmission belt (843), a driven wheel (844), an intermediate connecting piece (845), a bearing a (847), and a spline sleeve (846); an inner wall of the spline sleeve (846) is processed with an internal spline and is matched with the rotary main shaft (82) via a spline; the spline sleeve (846) is fixedly connected to the driven wheel (844) via the intermediate connecting piece (845); The intermediate connecting member (845) is rotatably arranged on the lifting platform (6) via the bearing a (847); the rotary motor (841) is fixed on the lifting platform (6) at the other end away from the rotary main shaft (82); the rotary motor (841) causes the rotary main shaft (82) to rotate via the driving wheel (842), the transmission belt (843), the driven wheel (844), the intermediate connecting member (845), and the spline sleeve (846).

7. The automatic bottom grinding device for ceramic tools with grinding force control function according to claim 6, characterized in that: The downward pressure actuator (85) comprises a downward pressure cylinder mounting frame (851) fixed on the lifting platform (6), and a downward pressure cylinder (852) arranged on the downward pressure cylinder mounting frame (851), wherein the shaft end of the downward pressure cylinder (852) is matingly connected to the upper end of the rotary main shaft (82) via a rotary joint (853).

8. The automatic bottom grinding device for ceramic tools with grinding force control function according to claim 7, characterized in that: The central shaft (31) is also provided with a pneumatic slip ring (9).

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