Ball grinding machine

Abstract

The utility model relates to the technical field of grinding equipment, and discloses a ball grinding machine which comprises a first grinding piece and a second grinding piece which are oppositely arranged, a space for containing a ball is formed between the first grinding piece and the second grinding piece, the first grinding piece can generate angular displacement in a plane G where the first grinding piece is located under the action of force, and the second grinding piece can generate angular displacement in a plane G where the second grinding piece is located. The second grinding piece can generate linear displacement close to or away from the plane G under the action of force, and can also generate reciprocating displacement in the direction parallel to the plane G under the action of force; according to the ball grinding machine disclosed by the utility model, enough space can be vacated for manual operation of the ball body in a staggered manner of the grinding pieces, and the situation that operators are accidentally injured due to the fact that the grinding pieces are out of control and fall off is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of grinding equipment, in particular to a ball grinding machine. Background Art

[0002] Ball grinding machines are generally used for grinding and polishing balls. For example, when grinding billiard balls, mold lines or weld lines are produced during the molding process, so the molded billiard balls need to be further polished.

[0003] The ball grinding machines on the market are basically composed of an upper grinding disc and a second grinding disc. The balls are placed between the upper grinding disc and the second grinding disc, and the grinding operation is achieved by friction with the upper and second grinding discs. For example, an improved structure of a ball grinding machine disclosed in Chinese patent CN107812571A is the mainstream equipment solution on the market. It includes a second grinding disc driven by a rotating motor to rotate in a plane and an upper grinding disc driven by a lifting motor to rise and fall. The space between the upper grinding disc and the second grinding disc is a working space for accommodating and grinding the balls, and the lifting plate is hoisted to the upper grinding disc through a connecting piece.

[0004] The grinding process of this ball mill is as follows: the ball is placed on the second grinding disc, the lifting plate drives the upper grinding disc to move downward to limit the ball, and the second grinding disc is driven to rotate to operate on the ball. When the ball needs to be replaced, the adjustment hand wheel is operated to move the upper grinding disc upward to free up space for loading operations.

[0005] This ball grinding machine has defects: the lifting motor that drives the upper grinding disc is used to ensure that the grinding disc always exerts a certain pressure on the balls. When placing and replacing the balls in the working space, it is necessary to operate the adjusting hand wheel to move the upper grinding disc upward to make room for the loading operation of the balls. After the loading is completed, the adjusting hand wheel is operated again to move the upper grinding disc downward. This operation process is cumbersome and time-consuming, and the operation space is very limited. If the upper grinding disc is not controlled, there is a risk of accidental injury. Utility Model Content

[0006] The utility model is intended to solve at least one of the technical problems existing in the prior art. For this reason, an object of the utility model is to propose a ball grinding machine.

[0007] Specifically, the ball mill includes a first grinding member and a second grinding member disposed opposite each other, with a space for accommodating the balls formed between the first grinding member and the second grinding member. The first grinding member can generate angular displacement within a plane G where the first grinding member is located under the action of a force, and the second grinding member can generate linear displacement toward or away from the plane G under the action of a force.

[0008] In this way, after the ball is placed between the first grinding member and the second grinding member, the angular displacement operation of the first grinding member is used to drive the ball to rotate, and the ball rubs against the first grinding member and the second grinding member respectively to achieve the ball grinding effect;

[0009] The linear displacement operation of the second grinding member is used to enable the second grinding member to continuously exert a compressive force on the ball, thereby coping with the wear of the grinding member and ensuring that the grinding member always acts on the ball;

[0010] Another function of the linear displacement operation of the second grinding member is that the first grinding member and the second grinding member are not just disc-shaped bodies, but are provided with annular grooves on their opposite surfaces. When the first grinding member and the second grinding member are exactly corresponding, their grooves are also exactly corresponding, forming a limit for the ball in the groove body, so that during the grinding operation, the ball is limited in the groove and will not escape from between the first grinding member and the second grinding member under the action of centrifugal force. Therefore, during the loading operation, the linear displacement operation of the second grinding member is also used to move the second grinding member upward, thereby allowing the ball to escape from the limiting effect of the groove on the second grinding member.

[0011] The difference between this ball mill and the traditional structure is that the second grinding member can also produce reciprocating displacement in a direction parallel to the plane G under the action of force;

[0012] The advantage of this arrangement is that when the ball breaks away from the limit of the groove on the second grinding member, the second grinding member moves horizontally and is misaligned with the first grinding member, making room for loading and unloading the ball. Then there is enough space on the first grinding member for manual operation, and since the second grinding member is located on one side during loading, it will not accidentally injure the operator due to uncontrolled falling.

[0013] In some examples of the present invention, the ball grinding machine further includes a machine base, a relative rotation connection between the first grinding member and the machine base, and a relative sliding connection between the second grinding member and the machine base;

[0014] The purpose of such arrangement is to determine the relative position between the first grinding member and the second grinding member so that the two can complete their respective operations under the support of the machine base.

[0015] In some examples of the present invention, the ball grinding machine further includes a connecting frame, the second grinding member is slidably connected to the connecting frame, so that the second grinding member can generate a sliding displacement toward or away from the plane G, and the connecting frame is slidably connected to the machine base, so that the second grinding member can generate a reciprocating displacement in a direction parallel to the plane G;

[0016] The purpose of such arrangement is to enable the second grinding member to complete longitudinal displacement and lateral displacement respectively through the connecting frame, and the displacements of the two can not interfere with each other.

[0017] In some examples of the present invention, the ball grinding machine further comprises a first ball screw, the rod body of the first ball screw is rotatably connected to the connecting frame, and the rod sleeve of the first ball screw is relatively fixedly connected to the second grinding member;

[0018] The purpose of such a setting is that by driving the rod body of the first ball screw to rotate through a power device or external force, the rod sleeve of the first ball screw can be linearly displaced relative to the rod body, thereby driving the second grinding member to be displaced.

[0019] In some examples of the present invention, the ball grinding machine further includes a first guide assembly, the first guide assembly including a guide rod and a limit plate arranged parallel to the rod body of the first ball screw, the rod sleeve of the first ball screw being fixedly connected to the limit plate, the guide rod passing through the connecting frame, and fixedly connected to the limit plate and the second grinding member at both ends of the guide rod;

[0020] The purpose of providing the first guide assembly is to limit the second grinding member and ensure that the second grinding member produces a linear displacement.

[0021] In some examples of the present invention, the ball grinding machine further includes a dust cover, which is placed between the connecting frame and the second grinding member and wraps the guide rod;

[0022] The purpose of providing the dust cover is to protect the guide rod and prevent dust from entering the connection between the guide rod and the connecting frame and affecting its guiding operation.

[0023] In some examples of the present invention, the connecting frame and the machine base are connected by a second ball screw, wherein the rod body of the second ball screw and the machine base are connected for relative rotation, and the rod sleeve of the second ball screw and the connecting frame are fixedly connected;

[0024] The purpose of such a setting is that by driving the rod body of the second ball screw to rotate through a power device or external force, the rod sleeve of the second ball screw can be linearly displaced relative to the rod body, thereby driving the connecting frame to undergo linear displacement.

[0025] In some examples of the present invention, the ball grinding machine further includes a slide rail assembly, which includes a slide rail and a slider respectively fixedly connected between the connecting frame and the machine base.

[0026] The purpose of providing the slide rail assembly is to limit the displacement of the connecting frame and ensure that the connecting frame can only undergo lateral horizontal displacement.

[0027] In some examples of the present invention, the ball grinding machine further includes a transmission shaft, one end of which is fixedly connected to the first grinding member;

[0028] The purpose of providing the transmission shaft is to control the angular displacement of the first grinding member by driving the transmission shaft to rotate.

[0029] In some examples of the present invention, the ball mill further includes a second guide assembly, the second guide assembly including a sleeve passing through the transmission shaft and fixedly connected to the machine base, and also including a bearing rotatably connecting the sleeve to the transmission shaft;

[0030] The purpose of providing the second guide assembly is to limit the transmission shaft and ensure that it can only generate angular displacement along its axial direction.

[0031] Additional aspects and advantages of the present invention will be given in part in the following description and will become apparent from the following description or learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0033] Figure 1 This is a front view of a ball grinding machine in an embodiment of the present utility model;

[0034] Figure 2 A top view of a ball grinding machine in an embodiment of the present utility model;

[0035] Figure 3 This is a cross-sectional view at AA in an embodiment of the present utility model;

[0036] Figure 4 This is a schematic diagram of the first grinding member and the second grinding member in an opposite state in an embodiment of the present invention;

[0037] Figure 5 It is a three-dimensional diagram of the ball grinding machine in the embodiment of the present utility model.

[0038] Description of reference numerals:

[0039] First grinding part 1, first groove 1-1; second grinding part 2, second groove 2-1, first ball screw 3, connecting frame 4, box body 4-1, bottom surface 4-2, top surface 4-3, first motor 5, first guide assembly 6, guide rod 6-1, limit plate 6-2, dust cover 7, second ball screw 8, second motor 9, gear 10, toothed belt 11, slide rail assembly 12, slide rail 12-1, slider 12-2, transmission shaft 13, second guide assembly 14, sleeve 14-1, bearing 14-2, reducer 15, machine base 16. DETAILED DESCRIPTION

[0040] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts shall fall within the scope of protection of the present invention.

[0041] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, features defined as "first" or "second" may explicitly or implicitly include one or more of such features. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0042] In the description of this utility model, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections; direct connections, indirect connections through an intermediate medium, and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0043] The following describes embodiments of the present invention in detail. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended only to explain the present invention and are not to be construed as limiting the present invention.

[0044] Reference below Figure 1-Figure 5 The figure shows a ball grinding machine which describes an embodiment of the present utility model.

[0045] Please see the attached Figure 1, is a front view of the ball mill, showing that the ball mill includes a first grinding member 1 and a second grinding member 2 disposed opposite to each other. The first grinding member 1 and the second grinding member 2 are specifically disc-shaped structures, and a space for accommodating the ball O is formed between the first grinding member 1 and the second grinding member 2;

[0046] It should be noted that the term "facing each other" herein means that the grinding surfaces of the first grinding member 1 and the second grinding member 2 are facing each other. In this way, when the first grinding member 1 and the second grinding member 2 are facing each other, they can simultaneously grind the sphere O in the space.

[0047] It should also be noted that: Figure 1 The first grinding member 1 and the second grinding member 2 are in a misaligned state, and no space for accommodating the ball O is shown. However, from the attached Figure 1 It can be seen that there is a gap of length H between the first grinding member 1 and the second grinding member 2, and this gap is the "space for accommodating the ball O" mentioned above;

[0048] At the same time from the attached Figure 1 As can be seen from the figure, the gap H is not large enough to accommodate the sphere O. Therefore, see the attached Figure 2 ~Attachment Figure 3 , which is a top view of the ball mill and a cross-sectional view at AA. Grooves are formed on the facing sides of the first grinding member 1 and the second grinding member 2, which are divided into a first groove 1-1 and a second groove 2-1. The grooves are annular grooves that can accommodate part of the ball O, forming a limit for the ball O to prevent the ball O from flying away from the grinding member under the action of centrifugal force during the grinding process.

[0049] Please see the attached Figure 4 , is a schematic diagram of the first grinding member 1 and the second grinding member 2 in a facing state;

[0050] The first grinding member 1 has the function of generating angular displacement within the plane G where the first grinding member 1 is located under the action of force;

[0051] The second grinding member 2 has the following functions: the second grinding member 2 can generate linear displacement close to or away from the plane G under the action of force, that is, it can generate linear displacement along the direction L perpendicular to the plane G. The second grinding member 2 can also generate reciprocating displacement along the direction M parallel to the plane G under the action of force.

[0052] Please continue to see the attached Figure 1 The ball grinding machine also includes a machine base 16, a first grinding member 1 and the machine base 16 are connected for relative rotation; and a second grinding member 2 and the machine base 16 are connected for relative sliding.

[0053] Please continue to see the attached Figure 1The ball grinding machine also includes a connecting frame 4, and the second grinding member 2 is slidably connected to the connecting frame 4, so that the second grinding member 2 can produce a sliding displacement close to or away from the plane G. The connecting frame 4 is slidably connected to the machine base 16, so that the second grinding member 2 can produce a reciprocating displacement along a direction parallel to the plane G.

[0054] For details, please refer to the attached Figure 3 The ball grinding machine further includes a first ball screw 3, a rod body of the first ball screw 3 is rotatably connected to the connecting frame 4, and a rod sleeve of the first ball screw 3 is relatively fixedly connected to the second grinding member 2;

[0055] For more details, please refer to the attached Figure 3 The connecting frame 4 includes a box body 4-1 having a bottom surface 4-2 and a top surface 4-3. The rod body of the first ball screw 3 is placed in the box body 4-1, and its upper end passes through the top surface 4-3 of the box body 4-1 and is connected to the output end of the first motor 5. The first motor 5 is fixed on the top surface outside the box body 4-1.

[0056] Please continue to see the attached Figure 3 The ball grinding machine further includes a first guide assembly 6, and the rod sleeve of the first ball screw 3 is connected to the second grinding member 2 through the first guide assembly 6;

[0057] Please continue to see the attached Figure 3 The first guide assembly 6 also includes a guide rod 6-1 and a limit plate 6-2 arranged parallel to the rod body of the first ball screw 3; the rod sleeve of the first ball screw 3 is fixedly connected to the limit plate 6-2, and both are placed in the box body 4-1, so that the rod body of the first ball screw 3 passes through the limit plate 6-2 along with the rod sleeve; there are four guide rods 6-1, one end of which is connected to the four corners of the limit plate 6-2 respectively, the middle part passes through the bottom plate of the box body 4-1, and the other end is connected to the second grinding member 2.

[0058] Please continue to see the attached Figure 3 The ball mill also includes a dust cover 7, which is placed between the connecting frame 4 and the second grinding member 2, wrapping the guide rod 6-1. The dust cover 7 is an accordion cover that is retractable to adapt to the longitudinal displacement of the second grinding member 2.

[0059] Please see the attached Figure 5 , is a three-dimensional view of the ball mill, the connecting frame 4 extends to be staggered with the second grinding member 2, and is connected to the machine base 16 by the second ball screw 8, wherein the rod body of the second ball screw 8 is connected to the machine base 16 for relative rotation, and the rod sleeve of the second ball screw 8 is fixedly connected to the connecting frame 4;

[0060] For details, please refer to the attached Figure 5The rod end of the second ball screw 8 is driven by the second motor 9, and the output end of the second motor 9 and the rod end of the second ball screw 8 are transmitted through a gear 10 and a toothed belt 11.

[0061] Please continue to see the attached Figure 5 The ball grinding machine further includes a slide rail assembly 12 , which includes a slide rail 12 - 1 and a slider 12 - 2 respectively fixedly connected between the connecting frame 4 and the machine base 16 .

[0062] Please continue to see the attached Figure 3 The ball mill also includes a transmission shaft 13, one end of which is fixedly connected to the first grinding member 1. The ball mill also includes a second guide assembly 14, which includes a sleeve 14-1 that passes through the transmission shaft 13 and is fixedly connected to the machine base 16, and also includes a bearing 14-2 that rotatably connects the sleeve 14-1 to the transmission shaft 13;

[0063] Please continue to see the attached Figure 3 The other end of the transmission shaft 13 is connected to a reducer 15 for driving the transmission shaft 13.

[0064] Other components according to the embodiment of the present invention, such as the motor, the reducer, the ball screw, etc., and their operations are well known to those skilled in the art and will not be described in detail here.

[0065] Throughout this specification, reference to terms such as "one embodiment," "some embodiments," "illustrative embodiments," "example," "specific example," or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with that embodiment or example are included in at least one embodiment or example of the present invention. In this specification, illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0066] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and purpose of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A ball grinding machine, characterized in that: The invention comprises a first grinding member and a second grinding member arranged opposite to each other, wherein a space for accommodating a sphere is formed between the first grinding member and the second grinding member. The first grinding member can generate angular displacement within a plane G where the first grinding member is located under the action of force. The second grinding member can generate linear displacement close to or away from the plane G under the action of force. The second grinding member can also generate reciprocating displacement in a direction parallel to the plane G under the action of force.

2. A ball grinding machine according to claim 1, characterized in that, It also includes a machine base, the first grinding member and the machine base are connected to each other in a relatively rotatable manner, and the second grinding member and the machine base are connected to each other in a relatively slidable manner.

3. A ball grinding machine according to claim 2, characterized in that, It also includes a connecting frame, on which the second grinding member is slidably connected, so that the second grinding member can produce a sliding displacement close to or away from the plane G, and the connecting frame is slidably connected to the machine base, so that the second grinding member can produce a reciprocating displacement along a direction parallel to the plane G.

4. A ball grinding machine according to claim 3, characterized in that, It also includes a first ball screw, the rod body of the first ball screw is rotatably connected to the connecting frame, and the rod sleeve of the first ball screw is relatively fixedly connected to the second grinding member.

5. A ball grinding machine according to claim 4, characterized in that, It also includes a first guide assembly, which includes a guide rod and a limit plate arranged parallel to the rod body of the first ball screw, the rod sleeve of the first ball screw is fixedly connected to the limit plate, the guide rod passes through the connecting frame, and is fixedly connected to the limit plate and the second grinding member at both ends of the guide rod.

6. A ball grinding machine according to claim 5, characterized in that: It also includes a dust cover, which is placed between the connecting frame and the second grinding member to wrap the guide rod.

7. A ball grinding machine according to any one of claims 3 to 6, characterized in that: The connecting frame and the machine base are connected by a second ball screw, wherein the rod body of the second ball screw and the machine base are connected for relative rotation, and the rod sleeve of the second ball screw and the connecting frame are fixedly connected.

8. A ball grinding machine according to claim 7, characterized in that: It also includes a slide rail assembly, which includes a slide rail and a slider that are respectively fixedly connected between the connecting frame and the base.

9. A ball grinding machine according to any one of claims 2 to 6, characterized in that: It also includes a transmission shaft, one end of which is fixedly connected to the first grinding member.

10. A ball grinding machine according to claim 9, characterized in that: It also includes a second guide assembly, which includes a pipe sleeve passing through the transmission shaft and fixedly connected to the machine base, and also includes a bearing that rotatably connects the pipe sleeve to the transmission shaft.

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