Glass plate polishing jig

Abstract

This utility model discloses a glass plate grinding fixture. It includes a base, a rotating arm, and a suction plate. A rotatable shaft is mounted on the base via bearing seats. The rotating arm has guide posts and upper and lower base plates located at both ends of the guide posts. A slider that can slide along the guide posts is mounted on the guide posts. The shaft is connected to the slider, and a cylinder is vertically mounted on the slider. The cylinder is a double-acting cylinder, and its push head is connected to the lower base plate. This utility model replaces the original linear module with a cylinder, using the cylinder as the vertical actuator. Furthermore, the use of a double-acting cylinder allows for control of the vertical movement of the rotating arm by adjusting the air pressure at its upper and lower ports. Because gas is used as the thrust, it provides a buffering effect when pressing against the grinding disc, preventing hard contact and improving the yield rate of glass plate grinding.

Description

Technical Field

[0001] This utility model relates to the field of tempered glass film grinding technology, and in particular to a glass plate grinding fixture. Background Technology

[0002] As we all know, tempered glass screen protectors are protective films applied to mobile phone screens. Structurally, they mainly consist of an outer layer of tempered glass: high-definition glass that has undergone tempering treatment, providing screen protection and impact resistance; a middle layer of plastic or resin: increasing toughness and preventing injury from flying glass shards after breakage; and a bottom adhesive layer: using adhesive to bond to the screen for a secure hold. During the production of tempered glass screen protectors, the initial step is processing the outer tempered glass layer. In addition to cutting the glass sheets, the cut glass sheets are then individually transferred to tempered glass screen protector polishing equipment for further polishing.

[0003] The polishing of glass cups mainly relies on a polishing fixture to hold the glass plate, then rotate it and make contact with the polishing disc to perform polishing. Because the glass plate is relatively thin, the selected polishing discs are all flexible polishing discs. During polishing, the glass plate is brought into contact with the polishing disc and will press against the flexible polishing disc.

[0004] Currently, existing glass plate grinding fixtures rely on motor-driven linear modules to control vertical movement. While this allows for precise movement to the required height, once the movement stops, it cannot move downwards or backwards, resulting in a locked height. The contact between the glass plate and the grinding disc is rigid, lacking any buffering effect. In this design, elastic buffering depends entirely on the elasticity of the flexible grinding disc itself. If the top pressure is too high, the material of the flexible grinding disc can easily be compacted, leading to rigid contact. When movement affects the contact, the glass plate is easily broken during rotary grinding, resulting in defective products. Utility Model Content

[0005] In view of the shortcomings of the prior art, the purpose of this utility model is to provide a glass plate grinding fixture with vertical buffer.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A glass plate grinding fixture includes a base, a rotating arm, and a suction plate. The base is fixedly installed on a tempered glass polishing device. A rotatable shaft is mounted on the base via a bearing seat. A first motor for driving the shaft to rotate is also fixedly installed on the base. The rotating arm has at least two symmetrical guide posts and an upper base plate and a lower base plate located at both ends of the guide posts. A slider that can slide along the guide posts is installed on each guide post. The shaft is connected to the slider. A cylinder is vertically mounted on the slider. The cylinder is a double-acting cylinder. The cylinder's push head is connected to the lower base plate. A second motor and a suction plate for clamping the glass plate are mounted on the lower base plate via a bearing. The rotating shaft of the second motor is connected to the suction plate via a gear set or a synchronous belt assembly, enabling the second motor to drive the suction plate to rotate.

[0008] Preferably, the suction disc includes a disc body and a rotating shaft. The middle part of the rotating shaft is connected to the lower base plate through two bearings. One end of the rotating shaft is connected to the rotating shaft of the second motor through a gear set or synchronous belt assembly. The other end of the rotating shaft is fixedly connected to the disc body. A conductive pipe is provided inside the rotating shaft. A cavity is provided inside the lower base plate between the two bearings. A conductive hole connected to the conductive pipe is provided in the cavity of the rotating shaft. A vacuum pipe is connected to the lower base plate and is connected to the cavity. At least one or two air ports are provided at the bottom of the disc body. A conductive cavity for connecting the various air ports is provided inside the disc body and is connected to the conductive pipe of the rotating shaft.

[0009] Preferably, a sealing ring is provided at the bearing location of the cavity.

[0010] Preferably, a vacuum suction plate with a shape adapted to the glass plate is fixedly installed at each air port of the disc body.

[0011] Preferably, both the base and the rotating arm are equipped with dust covers.

[0012] Preferably, the upper and lower base plates are provided with a first dustproof plate facing the base, and the slider is provided with a second dustproof plate facing the base. The first dustproof plates are arranged opposite to each other and form an enclosure with the dustproof cover. The first dustproof plate is provided with a clearance opening relative to the shaft. The two ends of the second dustproof plate are placed on the inner end face of the first dustproof plate. The overlap distance between the second dustproof plate and the first dustproof plate is greater than or equal to the movement distance of the slider, so that the second dustproof plate always covers the clearance opening.

[0013] By adopting the above solution, this utility model replaces the original linear module with a cylinder, using the cylinder as the vertical drive. The cylinder is a double-acting cylinder, which can control the up and down movement of the rotating arm by blowing different air pressures into the upper and lower ports of the cylinder. Since the thrust is gas, it can also act as a buffer when pressing against the grinding disc, avoiding hard contact and improving the yield of glass plate grinding. Attached Figure Description

[0014] Figure 1 This is a structural schematic diagram of an embodiment of the present utility model.

[0015] Figure 2 This is a schematic diagram of the structure from another direction of an embodiment of the present invention.

[0016] Figure 3 This is a cross-sectional view of an embodiment of the present utility model.

[0017] Figure 4 This is a schematic diagram of the structure of the suction tray according to an embodiment of the present invention.

[0018] Figure 5 This is a schematic diagram of the structure of this utility model with a dust cover installed.

[0019] Figure 6 This is a schematic diagram of the structure between the first dustproof plate and the second dustproof plate in an embodiment of this utility model. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0021] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of the stated features. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0022] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection. They can refer to a mechanical connection or an electrical connection. They can refer to a direct connection or an indirect connection through an intermediate medium, and they can refer to the internal communication of two components or the interaction between two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0023] like Figures 1 to 6As shown, this embodiment provides a glass plate grinding fixture, including a base 1, a rotating arm 2, and a suction plate 3. The base 1 is fixedly installed on a tempered glass film grinding device. A rotatable shaft 12 is mounted on the base 1 via a bearing seat 11. A first motor 13 for driving the shaft 12 to rotate is also fixedly installed on the base 1. The rotational connection between the first motor 13 and the shaft 12 can be a gearbox meshing connection or a synchronous belt drive connection, depending on the actual needs. The rotating arm 2 is provided with at least two (generally four) mutually symmetrical guide posts 21 and positioning... At the upper base plate 22 and lower base plate 23 at both ends of the guide post 21, a slider 24 that can slide along the guide post 21 is installed on the guide post 1. The shaft 12 is connected to the slider 24. A cylinder 25 is vertically installed on the slider 24. The cylinder 25 is a double-acting cylinder. The push head of the cylinder 25 is connected to the lower base plate 23. A second motor 26 and a suction plate 3 for clamping the glass plate are installed on the lower base plate 23 and connected through a bearing 100. The rotating shaft of the second motor 26 is connected to the suction plate 3 through a gear set or a synchronous belt assembly, so that the second motor 26 can drive the suction plate 3 to rotate.

[0024] The main innovation of this embodiment is that the original linear module is replaced by a cylinder 25, which serves as the vertical actuator. The cylinder 25 is a double-acting cylinder, which can control the up and down movement of the rotating arm 2 by adjusting the air pressure at the upper and lower ports of the cylinder 25. Since the thrust is gas, it can also act as a buffer when pressing against the grinding disc, avoiding hard contact and improving the yield of glass plate grinding.

[0025] In actual operation, the first motor 13 on the base 1 operates first, driving the shaft 12 to rotate. After the shaft 12 rotates, the rotating arm 2 rotates, generally 180°, so that the suction plate 3 faces upward, as it needs to receive the glass plate. After the suction plate 3 faces upward, it receives the glass plate. Once the glass plate is properly attached, the first motor 13 rotates back to its original position, turning the suction plate 3 downward. It should be noted that when receiving the glass plate, that is, when receiving the material, high pressure is applied to one end of the cylinder 25, causing the push head of the cylinder 25 to push outward. Because the slider 24 is fixed to the shaft 12, the slider 24 does not move relative to the base 1. After the push head of the cylinder 25 pushes the lower base plate 23, according to the reaction force, the slider 24 will move on the guide post 21, and the lower base plate 23 will be pushed outward relative to the base 1, thus presenting the rotating arm 2 pushed out to its highest position to receive the glass plate. After the material is received, atmospheric pressure is introduced to both ends of cylinder 25, connecting it to the outside. The originally extended push head of cylinder 25 retracts under the weight of the component, causing the suction disc 3 to descend into a pressure-free state. While shaft 12 rotates, the cylinder remains sealed, neither high nor low pressure is introduced. When the rotating arm 2 is in a vertical position and needs to descend, high pressure is introduced to the upper end of cylinder 25, and low pressure to the other end, causing the lower base plate to move to the desired position and contact the grinding disc. The compressibility of the air pressure during contact acts as a buffer, preventing it from pressing hard against the grinding disc. After grinding for a period of time, medium pressure (slightly higher than the previous pressure) is introduced into the lower end of cylinder 25, causing the push head of cylinder 25 to retract slightly. By repeatedly cycling this process with varying pressure at both ends of the cylinder, grinding can be performed flexibly.

[0026] Furthermore, regarding the structural design of the suction disc 3, the suction disc 3 in this embodiment mainly includes a disc body 31 and a rotating shaft 32. The middle part of the rotating shaft 32 is connected to the lower base plate 23 through two bearings 100. One end of the rotating shaft 32 is connected to the rotating shaft of the second motor 26 through a gear set or synchronous belt assembly. The other end of the rotating shaft 32 is fixedly connected to the disc body 31. A conductive pipe 33 is provided inside the rotating shaft 32. A cavity 34 is provided inside the lower base plate 23 between the two bearings 100. A conductive hole 35 connected to the conductive pipe 33 is provided in the cavity 34 of the rotating shaft 32. A vacuum pipe 36 is connected to the lower base plate 23. The vacuum pipe 36 is connected to the cavity 34. At least one or two air ports 37 are provided at the bottom of the disc body 31. A conductive cavity 38 for connecting each air port 37 is provided inside the disc body 31. The conductive cavity 38 is connected to the conductive pipe 33 of the rotating shaft 32. This allows for simultaneous rotation and vacuuming, enabling a single pipeline to perform vacuuming at multiple air ports 37.

[0027] Furthermore, to ensure sealing, a sealing ring 101 is provided in the cavity 34 of this embodiment at the bearing 100.

[0028] Furthermore, for safer glass plate suction, in this embodiment, a vacuum suction plate 39, shaped to fit the glass plate, is fixedly installed at each air port 37 on the disc body 31. The vacuum suction plate 39 acts as a plate, balancing the suction force so that the glass plate can be laid flat on it for secure suction, preventing breakage due to excessive force. The vacuum suction plate 39 is a commercially available type with a plate-like structure, such as... Figure 4 The strip-shaped slots 102 shown are connected to the air inlets 37. Alternatively, multiple fine holes connected to the air inlets 37 can be set in the plate body. Therefore, the specific structure of the vacuum suction plate will not be described in detail.

[0029] Furthermore, since it is used on a grinding equipment, dust will be present. In order to reduce the dust from entering the transmission mechanism, the base 1 and the rotating arm 2 in this embodiment are both equipped with dust covers 103. By covering the dust cover 103, the entry of dust can be effectively reduced.

[0030] Furthermore, since a vertical movement space is required at the shaft 12, and dust can easily enter the interior through this space, this embodiment specifically provides a first dustproof plate 105 on the upper base plate 22 and lower base plate 23 facing the base 1, and a second dustproof plate 106 on the slider 24 facing the base. The first dustproof plates 105 are arranged opposite each other and form an enclosure with the dust cover 103. The first dustproof plate 105 has a clearance opening 104 relative to the shaft 12. The two ends of the second dustproof plate 106 are placed on the inner end face of the first dustproof plate 105. The overlap distance between the second dustproof plate 106 and the first dustproof plate 105 is greater than or equal to the movement distance of the slider 24, so that the second dustproof plate 106 always covers the clearance opening 104. In this way, dust protection can be provided during movement.

[0031] The above are merely preferred embodiments of this utility model and do not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the description and drawings of this utility model, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A glass plate grinding fixture, characterized in that: The device includes a base, a rotating arm, and a suction plate. The base is fixedly installed on a tempered glass film polishing device. A rotatable shaft is mounted on the base via bearing seats. A first motor for driving the shaft to rotate is also fixedly installed on the base. The rotating arm has at least two symmetrical guide columns and an upper base plate and a lower base plate located at both ends of the guide columns. A slider that can slide along the guide columns is installed on each guide column. The shaft is connected to the slider. A cylinder is vertically mounted on the slider. The cylinder is a double-acting cylinder. The cylinder's push head is connected to the lower base plate. A second motor and a suction plate for clamping the glass plate are mounted on the lower base plate via bearings. The rotating shaft of the second motor is connected to the suction plate via a gear set or a synchronous belt assembly, enabling the second motor to drive the suction plate to rotate.

2. The glass plate grinding fixture as described in claim 1, characterized in that: The suction disc includes a disc body and a rotating shaft. The middle part of the rotating shaft is connected to the lower base plate through two bearings. One end of the rotating shaft is connected to the rotating shaft of the second motor through a gear set or synchronous belt assembly. The other end of the rotating shaft is fixedly connected to the disc body. A conductive pipe is provided inside the rotating shaft. A cavity is provided inside the lower base plate between the two bearings. A conductive hole connected to the conductive pipe is provided in the cavity of the rotating shaft. A vacuum pipe is connected to the lower base plate and is connected to the cavity. At least one or two air ports are provided at the bottom of the disc body. A conductive cavity for connecting the various air ports is provided inside the disc body. The conductive cavity is connected to the conductive pipe of the rotating shaft.

3. The glass plate grinding fixture as described in claim 2, characterized in that: The cavity is located at the bearing and is equipped with a sealing ring.

4. The glass plate grinding fixture as described in claim 3, characterized in that: The disc body has a vacuum suction plate whose shape is adapted to the glass plate fixedly installed at each air port.

5. A glass plate grinding fixture as described in claim 1, characterized in that: Both the base and the rotating arm are equipped with dust covers.

6. A glass plate grinding fixture as described in claim 5, characterized in that: The upper and lower base plates are provided with a first dustproof plate facing the base, and the slider is provided with a second dustproof plate facing the base. The first dustproof plates are arranged opposite each other and form an enclosure with the dustproof cover. The first dustproof plate is provided with a clearance opening relative to the shaft. The two ends of the second dustproof plate are placed on the inner end face of the first dustproof plate. The overlap distance between the second dustproof plate and the first dustproof plate is greater than or equal to the movement distance of the slider, so that the second dustproof plate always covers the clearance opening.

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