CN113511513A

CN113511513A - Cantilever and damping structure thereof and cassette with cantilever

Info

Publication number: CN113511513A
Application number: CN202010342189.8A
Authority: CN
Inventors: 颜晖展; 陈健福
Original assignee: Chung King Enterprise Co ltd
Current assignee: Chung King Enterprise Co ltd
Priority date: 2020-04-10
Filing date: 2020-04-27
Publication date: 2021-10-19
Also published as: TWI727735B; TW202138257A

Abstract

The invention provides a cantilever, which comprises an arm body, wherein the inside of the arm body is provided with at least one accommodating space extending along the length direction of the arm body; and at least one vibration reduction structure, each vibration reduction structure comprising: at least one supporting block and at least one damping strip. The at least one supporting block is fixedly arranged in the at least one accommodating space, and each at least one damping strip is connected to at least one of the at least one supporting block. The length of the at least one vibration damping structure is less than or equal to that of the arm body. By the implementation of the invention, when the cantilever vibrates, the vibration energy can be rapidly dissipated by the vibration reduction structure arranged in the cantilever body, so that the vibration duration time is greatly shortened, and the probability of damage to the cantilever and an object carried by the cantilever is reduced.

Description

Cantilever and damping structure thereof and cassette with cantilever

Technical Field

The present invention relates to a cantilever and a vibration damping structure, and more particularly, to a cantilever and a vibration damping structure in a cassette for carrying a substrate.

Background

A cassette structure for loading glass substrates and protecting the glass substrates from external impacts while transporting the glass substrates generally includes square frames each having a plurality of vertical rods side by side on one side thereof, and multi-layered support rods coupled to the vertical rods at equal intervals to stack the glass substrates. The support bar is typically a cantilever arm that is fixed at only one end and can vibrate when the cassette is moved or substrates are loaded and unloaded. The longer the vibration time is, the higher the probability that the glass substrate is damaged thereby.

In the flat panel display industry, the size of the glass substrate used in the flat panel display industry is increasing with the increase of the display area. For example, the length of each edge of a glass substrate used in the manufacturing process of 6 th generation liquid crystal displays is more than 1.5 m. In 8 th generation LCD, the length of each side of the glass substrate used in the manufacturing process is more than 2 m.

On the other hand, since the area of the glass substrate is increasing, the thickness of the glass substrate is becoming smaller in order to reduce the weight as much as possible. Such a glass substrate is more likely to sag and deform when horizontally supported and placed, and is also more likely to crack.

In order to avoid the damage of the increasingly large and thin glass substrates due to excessive sagging and deformation during the processes of taking, placing and transporting, a certain number of support rods with longer length must be provided in the cassette to correspond to the length of the glass substrates, so as to provide sufficient support for the glass substrates.

However, the longer support rod is also heavier and lasts longer when it vibrates, so that the loading and unloading work must wait until the amplitude of the vibration is attenuated below a certain range, thereby causing delay. In order to reduce the weight of the support rod and also consider the aspects of cost, manufacturing difficulty and the like, the conventional support rod is mostly made of materials such as high-strength engineering Plastics or Carbon Fiber Reinforced polymer Composites (CFRP). In order to reduce the duration of the vibration of the supporting rod, some manufacturers have tried to arrange a damper in the rod body of the cantilever-type supporting rod, so as to transmit the vibration of the supporting rod to the damper, and then convert the energy received by the damper into heat energy to dissipate the heat energy in the vibration process of the damper, so as to accelerate the attenuation of the vibration of the supporting rod. However, in such a design, the damper frequently knocks the rod body of the support rod during the vibration process, which causes the rod body of the support rod made of engineering plastics or CFRP to break, and greatly reduces the service life of the support rod.

Therefore, it is an urgent need to design a support rod that can effectively support the large-sized glass substrate without excessive sagging deformation, and can rapidly reduce vibration and achieve stability when vibration is generated, and has a long service life.

Disclosure of Invention

In order to achieve the objective of effectively solving the above problems, the present invention provides a cantilever, which includes an arm body having at least one accommodating space therein extending along a length direction of the arm body; and at least one vibration reduction structure, each vibration reduction structure comprising: at least one supporting block and at least one damping strip. The at least one supporting block is fixedly arranged in the at least one accommodating space, and each at least one damping strip is connected to at least one of the at least one supporting block. The length of the at least one vibration damping structure is less than or equal to that of the arm body.

According to an embodiment of the present invention, each of the damping strips is provided with at least one damping member, and a gap allowing the damping strips and the damping members to vibrate is reserved between each of the damping members and the arm body.

According to an embodiment of the present invention, each of the buffer members is a buffer layer or a buffer film wrapped outside the corresponding damping strip.

According to an embodiment of the present invention, each of the buffer members is a buffer block disposed on the corresponding damping strip.

According to an embodiment of the present invention, each of the damping structures includes a plurality of supporting blocks distributed along the length direction of the arm body, and at least one damping strip is disposed between any two adjacent supporting blocks.

According to an embodiment of the present invention, at least a portion of each of the support blocks contacting the arm is made of a buffer material.

According to an embodiment of the present invention, each of the vibration reduction structures is configured such that when the arm body vibrates, each of the vibration reduction strips vibrates in a manner that a phase of the vibration thereof is opposite to a phase of the vibration of the arm body.

According to an embodiment of the invention, each of the vibration reduction structures is configured such that when the arm body vibrates, each of the vibration reduction strips vibrates at a frequency that is an integer multiple of a vibration frequency of the arm body.

According to an embodiment of the present invention, each of the vibration reduction structures is configured such that when the arm vibrates, the vibration frequency of each of the arms is an integer multiple of the vibration frequency of the vibration reduction strip.

In addition, to achieve the objective of effectively solving the above problems, the present invention further provides a cassette, which includes a frame, a plurality of side support frames and at least one rear support frame. The side supporting frames are respectively vertically arranged on two opposite sides of the frame body, each side supporting frame is provided with a plurality of side supporting parts which are arranged on the side supporting frames at intervals from top to bottom, and the front ends of the side supporting parts protrude towards the direction inside the clamping box. The at least one rear support frame is vertically arranged at the rear side of the frame body and comprises a plurality of cantilevers which are parallel to each other and are arranged on the rear support frame from top to bottom at intervals, and the front ends of the cantilevers protrude towards the front opening of the cartridge. The side supporting parts of the side supporting frames and the cantilevers of the rear supporting frames are arranged correspondingly to each other to define a plurality of accommodating grooves arranged from top to bottom.

By using the cantilever and the vibration reduction structure therein, when the cantilever/supporting rod in the cassette for carrying and loading the substrate vibrates, the vibration reduction structure arranged in the arm body can quickly dissipate the energy of the vibration, thereby greatly shortening the vibration duration time, improving the loading efficiency and simultaneously reducing the probability of damage to the cantilever and the object carried by the cantilever.

Drawings

FIG. 1 is a perspective view of a cassette according to an embodiment of the invention.

Fig. 2 is a schematic view of the cantilever of fig. 1.

Fig. 3 is a perspective view of a vibration damping structure in the cantilever of fig. 2.

Fig. 4 is a partial cross-sectional side view of the cantilever of fig. 2.

Fig. 5 is a plan view of the vibration damping structure of fig. 3.

Fig. 6A to 6C are side views of different embodiments of the vibration damping structure of the present invention.

Fig. 7 is a top view of a vibration dampening structure according to various embodiments of the present invention.

Description of the reference numerals

1: cantilever

11 arm body

2: the cassette

21: frame body

211 side support frame

211a side supporting part

212 rear support frame

213 front opening

214 a receiving groove

3: glass substrate

10 vibration damping structure

100 supporting block

110 damping strip

120 buffer part

Detailed Description

Referring to fig. 1, fig. 1 is a perspective view of a cassette 2 according to an embodiment of the invention. As shown in fig. 1, the cassette 2 includes a frame 21, a plurality of side support frames 211, and at least one rear support frame 212. The side supporting frames 211 are respectively vertically arranged on two opposite sides of the frame 21, each side supporting frame 211 has a plurality of side supporting portions 211a arranged on the side supporting frame 211 from top to bottom at intervals, and the front end of each side supporting portion 211a protrudes toward the inside of the cassette 2.

The at least one rear support frame 212 is vertically disposed at the rear side of the frame 21, and includes a plurality of cantilevers 1 that are parallel to each other and are arranged on the rear support frame 212 from top to bottom at intervals. The front end of each cantilever 1 protrudes toward the front opening 213 of the cassette 2.

The side support portion 211a of each side support frame 211 and the suspension arm 1 of each rear support frame 212 are disposed corresponding to each other to define a plurality of receiving grooves 214 arranged from top to bottom in the cassette 2. Each receiving groove 214 can receive a glass substrate 3, and the glass substrate 3 in the receiving groove 214 is supported by the side supporting portions 211a at the bottom end of the receiving groove 214 and the suspension arm 1.

Referring to fig. 2 to 5, fig. 2 is a schematic view of the suspension arm in fig. 1, fig. 3 is a perspective view of a damping structure in the suspension arm in fig. 2, fig. 4 is a side view of a partial section of the suspension arm in fig. 2, and fig. 5 is a top view of the damping structure in fig. 3. As shown in fig. 2 to 5: the suspension arm 1 includes an arm body 11 and a vibration damping structure 10. The arm 11 has a tubular structure with a receiving space extending along the length direction of the arm 11, and the damping structure 10 is disposed in the receiving space.

The vibration damping structure 10 includes at least one supporting block 100 fixedly disposed in the at least one accommodating space; and at least one damping strip 110, each damping strip 110 being connected to at least one of the at least one support block 100. That is, each damping bar 110 has at least one end connected to one of the supporting blocks 100, and the other end may be a free end or connected to the other supporting block 100.

Since the damping structure 10 is disposed in the accommodating space inside the arm 11, the total length of the damping structure 10 must be less than or equal to the length of the arm 11, but not greater than the length of the arm 11, so as not to protrude outside the arm 11.

In some embodiments, when the number of the supporting blocks 100 is more than two, at least one damping strip 110 is disposed between any two adjacent supporting blocks 100. As shown in fig. 2 to 5, when there are two damping bars 110, both ends of each of the two damping bars 110 may be connected to two different supporting blocks 100, respectively.

In addition to the embodiments shown in fig. 2 to 5, the number of the supporting blocks 100 and the number of the damping strips 110 may be varied in other embodiments. For example, in the embodiment shown in fig. 6A, the damping structure 10 includes three supporting blocks 100 and two or more damping bars 110. The three supporting blocks 100 are fixedly disposed in the accommodating space, wherein at least one damping strip 110 is connected between every two adjacent supporting blocks 100.

The damping structure 10 shown in fig. 6B includes two support blocks 100 and two damping strips 110. One of the two damping bars 110 is connected between the two supporting blocks 100 so that both ends thereof are fixed and only a portion between both ends can generate vibration. The other damping bar 110 has only one end connected to one of the two support blocks 100 and the other end serving as a free end. As for the embodiment shown in fig. 6C, the damping structure 10 includes only one supporting block 100 connected to a damping strip 110.

By the arrangement of the damping structure 10, when the cantilever 1 vibrates, a part of the energy of the vibration can be transmitted to the damping structure 10 through the arm body 11, and then transmitted to each damping strip 110 through the supporting block 100 in the damping structure 10, so that the damping strips 110 follow the vibration, thereby dispersing the energy of the vibration of the cantilever 1, and preventing the cantilever 1 from vibrating too violently.

In some preferred embodiments, a buffer 120 is disposed on each of the damping strips 110. As shown in fig. 3, each of the buffering members 120 may be a buffer layer or a buffer film covering the corresponding damping strip 110. As shown in fig. 4, after the damper 120 is installed, a gap is left between the damper bar 110 and the arm 11 to allow the damper 120 and the damper 110 to vibrate.

The buffer member 120 in the form of a buffer layer or a buffer film is generally formed by winding a long strip-shaped buffer material sheet or film around the outside of the damping strip 110, but is not limited in this way. The covered region may only cover a portion of the damping strip 110 with a larger amplitude, such as a free end of the damping strip 110 fixed at one end, or a central region of the damping strip 110 fixed at two ends, or may cover the entire damping strip 110, which is not limited in this embodiment.

The purpose of the buffer member 120 is mainly to buffer and absorb the impact force by the buffer member 120 when the suspension arm 1 vibrates and the damping strip 110 also vibrates to impact the arm body 11, so as to prevent the arm body 11 from being damaged. And by means of the mechanisms of the buffer material 120 absorbing the deformation after impact, the friction between the buffer material 120 and the damping strip 110, and the respective internal friction between the damping strip 110 and the buffer material 120, the kinetic energy of the vibration transmitted from the cantilever 1 can be converted into heat energy and dissipated, so that the vibration of the cantilever 1 can be quickly attenuated and recovered to be stable.

The buffer member 120 is generally made of a material having elasticity, such as rubber, polymer elastomer, or polymer foam, for example, Expanded Polyethylene (EPE). However, the present invention is not limited thereto, and any material that absorbs impact by elastic deformation and provides cushioning may be used.

As shown in fig. 7, each of the dampers 120 may also be a buffer block disposed on the corresponding damping strip 110, which has no action mechanism with the damper 120 in the form of a buffer layer or a buffer film, and therefore, it will not be described herein.

However, it is to be noted that: since fig. 7 is a top view, the vibration of the cantilever 1 generally occurs in a direction perpendicular to the ground. Therefore, in a side view, the buffer block type buffer 120 still has to have a gap on at least one side of the upper or lower side of the cladding type buffer 120 as shown in fig. 4 to allow the vibration of the damping strip 110 and the buffer 120.

In addition, in the above embodiments, at least the portion of each support block 100 contacting with the arm 11 or the whole of each support block 100 is made of a buffer material. Since at least the portion of each support block 100 contacting the arm 11 is made of a damping material, the vibration of the arm 11 is damped and delayed before being transmitted to each damping strip 110.

With such a structural design, each of the vibration damping structures 10 may be configured such that when the arm 11 vibrates, each of the vibration damping strips 110 vibrates in a manner that the vibration phase thereof is the same as but opposite to the vibration frequency of the arm 11. Since the vibration damping strip 110 has the same frequency as the vibration of the arm body 11, the energy of the vibration can be easily transmitted from the arm body 11 to the vibration damping strip 110 of the vibration damping structure 10. On the other hand, since the vibration damping strip 110 and the arm body 11 vibrate in opposite phases, the vibration of the entire suspension arm 1 can be damped quickly.

In addition to configuring each of the vibration damping structures 10 such that each of the vibration damping strips 110 vibrates in a manner that the vibration phase thereof is the same as but opposite to the vibration frequency of the arm 11 when the arm 11 vibrates, the embodiment may configure each of the vibration damping structures 10 such that the vibration frequency of each of the vibration damping strips 110 is an integer multiple of the vibration frequency of the arm 11, or the vibration frequency of the arm 11 is an integer multiple of the vibration frequency of each of the vibration damping strips 110.

Since the vibration frequency of the arm 11 is an integral multiple or an integral fraction of the vibration frequency of each vibration damping strip 110, the vibration phases of the two vibration damping strips are in a fixed relative relationship, so that the vibration of the arm 11 can be easily transmitted to each vibration damping strip 110, and the vibration of the entire cantilever 1 can be quickly damped by the above mechanism.

It should be noted in particular that since in real situations vibrations may be transmitted along paths of different lengths on an object, the object will not vibrate at a single wavelength/frequency, but rather at a range of frequencies encompassing a dominant frequency.

Therefore, although the vibration damping structure 10 is configured in the embodiment such that the vibration frequency of the arm 11 and the vibration frequency of the damping strip 110 are in integer multiple (including the same frequency) to obtain the best vibration damping and vibration attenuation effect. However, in practice, as long as the ratio of the vibration frequencies of the arm 11 and the damping strip 110 is within a rated error range of an integer multiple, the relative relationship between the vibration phases of the two components and the energy transfer effect are consistent with those when the frequency ratio is an integer during the time when the vibration of the entire cantilever 1 is significantly attenuated to a small amplitude. Therefore, in this state, the ratio of the two vibration frequencies should still be regarded as the integer.

By using the cantilever and the vibration reduction structure in the invention, when the cantilever vibrates in the process of conveying the substrate, the vibration energy of the cantilever can be rapidly dissipated by the vibration reduction structure arranged in the arm body of the cantilever, so that the amplitude and duration of the vibration are obviously reduced, the probability of damage to the cantilever and a bearing object is reduced, and the efficiency of loading or unloading work can be greatly improved.

The present invention is not limited to the above-described embodiments, and it will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit or scope of the invention.

Thus, it is intended that the present invention cover the modifications and variations of this invention or those within the scope of the appended claims and their equivalents.

Claims

1. A cantilever, characterized in that it comprises:

the arm body is internally provided with at least one accommodating space extending along the length direction of the arm body; and

at least one vibration-damping structure, each vibration-damping structure comprising:

at least one supporting block which is fixedly arranged in the at least one accommodating space; and

at least one damping strip, each damping strip is connected to at least one of the at least one supporting block;

wherein, the length of the at least one vibration damping structure is less than or equal to the length of the arm body.

2. The suspension arm of claim 1, wherein each of the damping bars has at least one damping member disposed thereon, and a gap exists between each of the damping members and the arm body to allow the damping bars and the damping members to vibrate.

3. The suspension arm of claim 2, wherein each of the buffers is a buffer layer or a buffer film wrapped outside the corresponding damping strip.

4. The cantilever according to claim 2, wherein each of the dampers is a bumper disposed on the corresponding damper bar.

5. The cantilever according to claim 1, wherein each damping structure comprises a plurality of support blocks distributed along the length direction of the arm body, and at least one damping strip is provided between any two adjacent support blocks.

6. The cantilever according to claim 1, wherein at least the portion of each support block contacting the arm body is made of a buffer material.

7. The cantilever of any one of claims 1-6, wherein each damping structure is configured such that when the arm body vibrates, each damping strip vibrates in a manner that its vibration phase is opposite to that of the arm body.

8. The cantilever of any one of claims 1-6, wherein each damping structure is configured such that when the arm vibrates, each damping strip vibrates at a frequency that is an integer multiple of the frequency of vibration of the arm.

9. The cantilever of any one of claims 1-6, wherein each damping structure is configured such that when the arm vibrates, the frequency of vibration of each arm is an integer multiple of the frequency of vibration of the damping strip.

10. A cartridge, comprising:

a frame body;

the side supporting frames are respectively vertically arranged on two opposite sides of the frame body, each side supporting frame is provided with a plurality of side supporting parts which are arranged on the side supporting frames at intervals from top to bottom, and the front ends of the side supporting parts protrude towards the direction of the inside of the cassette; and

at least one rear support stand provided upright at a rear side of the frame body, and the rear support stand includes:

the cantilever according to any one of claims 1 to 9, which is arranged on the rear support frame in parallel and spaced from top to bottom, and the front end of each cantilever projects toward the front opening of the cassette;

the side supporting parts of the side supporting frames and the cantilevers of the rear supporting frames are arranged correspondingly to each other to define a plurality of accommodating grooves arranged from top to bottom.

11. A vibration damping structure is provided in an accommodating space inside an arm body of a cantilever, and the vibration damping structure includes:

at least one damping strip, each damping strip is connected to at least one of the at least one supporting block.

12. The structure of claim 11, wherein each of the vibration-damping strips has at least one damping member disposed thereon, and a gap exists between each of the damping members and the arm body to allow the vibration-damping strips and the damping members to vibrate.

13. The damping structure as claimed in claim 12, wherein each damping member is a buffer layer or a buffer film covering the outer portion of the corresponding damping strip.

14. The vibration damping structure according to claim 12, wherein each of the dampers is a cushion block provided on the corresponding damper strip.

15. The damping structure as claimed in claim 11, wherein the damping structure comprises a plurality of support blocks distributed along the length direction of the arm body, and at least one damping strip is provided between any two adjacent support blocks.

16. The vibration damping structure according to claim 11, wherein at least a portion of each of the support blocks which contacts the arm body is made of a damping material.

17. The vibration damping structure according to any one of claims 11 to 16, wherein the vibration damping structure is configured such that when the arm body vibrates, each of the vibration damping strips vibrates in a manner that the vibration phase thereof is opposite to the vibration phase of the arm body.

18. The vibration damping structure according to any one of claims 11 to 16, wherein the vibration damping structure is configured such that when the arm body vibrates, each of the vibration damping strips vibrates at a frequency that is an integer multiple of a vibration frequency of the arm body.

19. The vibration damping structure according to any one of claims 11 to 16, wherein each vibration damping structure is configured such that when the arm body vibrates, the frequency of vibration of the arm body is an integer multiple of the frequency of vibration of each vibration damping strip.