Knocking test system and method for interlayer for laminated glass

Abstract

The invention discloses a middle layer knocking test system and method for laminated glass, and belongs to the technical field of laminated glass knocking tests.The system comprises a control device, a sound insulation device, a knocking device, a fixing device, a waste collecting device, a tool box and a collecting and processing device; the sound insulation device and the collecting and processing device are arranged at the two ends of the upper side of the control device, the tool box is also arranged on the upper side of the control device and located between the sound insulation device and the collecting and processing device, and the knocking device and the fixing device are located in the sound insulation device and fixed to the upper side of the control device. According to the system, the corresponding methods of the system are combined, the processes of knocking, marking, shooting and rating are integrated together, the test result can be conveniently and rapidly measured, and the test efficiency is improved. And meanwhile, the problems that the frostbite risk exists, the measurement consistency cannot be guaranteed, the labor cost is consumed, and potential safety hazards and noise pollution are caused in the existing technical scheme are solved.

Description

Technical Field

[0001] The present invention relates to the technical field of laminated glass knock test, and in particular to a test system and method for a knock test of an intermediate layer of laminated glass. Background Art

[0002] After the laminated glass is prepared, a knock test is required to verify its safety and adhesion with interlayers such as PVB, SGP, and EVA, and the knock value is used to rate it. However, there is currently no fixed experimental equipment for knock test determination, and the equipment is simple, low in intelligence, low in work efficiency, and consumes a lot of manpower and time costs.

[0003] At present, most companies and laboratories use self-made manual tapping test devices, which have the following problems: 1. The sample needs to be placed in a low-temperature box for a period of time, and the tapping test must be performed immediately after it is taken out. The tester needs to hold the sample for the tapping test, which poses a risk of frostbite; 2. A pneumatic hammer is used for vertical tapping or the weight of the hammer head does not meet the standard requirements. Different tapping methods and tapping forces will lead to huge differences in the results, and measurement consistency cannot be guaranteed; 3. The tapping test will produce a large amount of glass fragments, which need to be manually cleaned regularly, consuming manpower costs; 4. Huge noise is generated during the tapping process, causing noise pollution; 5. The tapping device lacks protection, which easily causes glass fragments to splash, posing a safety hazard to the tester; 6. The assessment of the tapping value adopts manual observation and evaluation, and the assessment accuracy cannot be guaranteed. Based on this, the present invention provides a test system and method for the intermediate layer tapping test of laminated glass. Summary of the Invention

[0004] The purpose of the present invention is to provide a test system and method for an intermediate layer tapping test for laminated glass, which integrates tapping, marking, photographing and rating to solve many problems faced by existing rating methods and facilitate rapid acquisition of test results.

[0005] To achieve the above-mentioned objectives, the present invention provides a testing system and method for an intermediate layer knocking test for laminated glass, comprising a control device, a sound insulation device, a knocking device, a fixing device, a waste collection device, a tool box and a collection and processing device. The sound insulation device and the collection and processing device are arranged at both ends of the upper side of the control device. The tool box is also arranged on the upper side of the control device, located between the sound insulation device and the collection and processing device. The knocking device and the fixing device are both located inside the sound insulation device and fixed on the upper side of the control device. The waste collection device is located inside the control device below the sound insulation device.

[0006] Preferably, the control device includes a main body, a first control panel and a second control panel, the first control panel and the second control panel are arranged on the same side of the main body and at both ends of the main body, the second control panel is located below the acquisition and processing device and is connected to the acquisition and processing device, and the second control panel is also connected to a host computer installed with image processing software through a data transmission line, the first control panel is located at one end of the main body away from the second control panel, and the first control panel is connected to the knocking device and the fixing device.

[0007] Preferably, the sound insulation device includes a sound insulation cover, sound insulation cotton is arranged on the inside of the sound insulation cover, and an observation window is also arranged on the sound insulation cover.

[0008] Preferably, the knocking device includes an automatic knocking hammer, a transmission shaft and a fixed rod, one end of the fixed rod is connected to the main body, and the other end is connected to the transmission shaft, the automatic knocking hammer is fixed to the end of the transmission shaft away from the fixed rod, and the transmission shaft is also connected to the first control panel.

[0009] Preferably, the fixing device includes a sample table, a sample tray, an upper and lower transmission device, a left and right transmission device, a lifting ruler and a lifting adjustment device. The sample tray is arranged on the sample table, and a sample clamping device is arranged on all four sides of the upper side of the sample tray. The upper and lower transmission devices are composed of two devices arranged on the upper and lower sides of the sample table. The left and right transmission devices pass through the middle position of the sample table and are connected to the upper and lower transmission devices. The lifting ruler is arranged below the lower upper and lower transmission devices. One end of the lifting adjustment device is sleeved on the outside of the lifting ruler, and the other end is connected to the lower side of the sample table through an angle adjuster.

[0010] Preferably, the waste collection device includes a waste box, a first baffle, a second baffle and a waste collection tray. The middle position of the upper side of the waste box is located below the tilt direction of the sample table. One end of the first baffle and the second baffle are arranged on both sides of the upper side of the waste box, and the other ends are both located inside the waste box. The waste collection tray is located inside the waste box and below the first baffle and the second baffle. The waste collection tray is provided with a handle and a roller for facilitating the removal of the waste collection tray.

[0011] Preferably, the toolbox includes a box body, an illuminator, a detector, a marker and an amplifier. The box body is fixed between the soundproof cover and the acquisition and processing device above the main body. The illuminator is located on one side inside the box body and is also fixed on the main body. The detector, marker and amplifier are located at one end of the box body away from the illuminator and are arranged in order up and down.

[0012] Preferably, the acquisition and processing device includes a shooting box, a high-speed industrial camera and a sample rack. The shooting box is located at the end of the upper side of the main body away from the sound insulation cover. The high-speed industrial camera is arranged on the top of the shooting box and can adjust the height and position. The sample rack is fixed above the main body inside the shooting box and is located in the middle position below the shooting box.

[0013] The present invention also provides a method for testing a knock test on an intermediate layer for laminated glass, which uses the above-mentioned knock test system for an intermediate layer for laminated glass and includes the following steps:

[0014] S1. Fix the sample on the sample stage using the sample clamping device, and then adjust the angle between the sample stage and the ground using the lifting ruler, lifting adjustment device and angle adjuster;

[0015] S2. Setting the striking force and frequency of the automatic striking hammer and the transmission shaft through the first control panel, then setting the upper and lower transmission devices and the left and right transmission devices to adjust the transmission speed of the sample, and starting the striking device;

[0016] S3. After the knocking device completes the knocking, it puts the knocked sample into the tool box, turns on the illuminator, uses the amplifier to magnify the sample, uses the detector to distinguish between film and glass, and finally uses the marker to mark the exposed film on the sample surface;

[0017] S4, sending the marked samples in the tool box to the sample rack of the collection and processing device, and then photographing the marked samples with a high-speed industrial camera to obtain sample photos;

[0018] S5. The second control panel transmits the sample photo to the image processing software through the data transmission line, processes the photo using the image processing software, obtains the percentage of the exposed film area to the total sample area, calculates the knock value, and completes the knock test.

[0019] Preferably, the glass fragments generated by the knocking device in S2 enter the waste collection tray through the first baffle and the second baffle.

[0020] Therefore, the present invention adopts a laminated glass intermediate layer knock test system and method of the above structure, which has the following advantages:

[0021] 1. Integrate the tapping-marking-shooting-grading process to facilitate rapid measurement of test results;

[0022] 2. The sample is fixed on the sample table by a clamping device to prevent frostbite or cuts that may occur when the experimenter holds the sample. In combination with the angle adjustment device and the lifting device, the angle between the sample table and the ground can be flexibly changed to adapt to different standard requirements;

[0023] 3. The control panel can be used to change the tapping force and frequency to ensure uniform tapping force, good measurement consistency, and reduce labor costs. At the same time, the control panel can also control the up and down and left and right transmission devices on the sample stage to achieve constant speed transmission of the sample, ensuring that each position of the sample is evenly tapped.

[0024] 4. Equipped with a waste box with a baffle to collect the waste generated by knocking. The waste box is easy to extract and clean up the glass debris;

[0025] 5. A soundproof cover with sound-absorbing cotton is used to effectively reduce noise pollution and prevent glass fragments from flying and injuring people. The soundproof cover is equipped with an observation window to facilitate the experimenters to observe and control the knocking process.

[0026] 6. The tool box contains detectors, markers, amplifiers, illuminators, etc., which are convenient for marking the samples after knocking;

[0027] 7. The acquisition and processing device uses a high-speed industrial camera to take photos of the marked samples after knocking, exports the image information through a data transmission tool, and imports it into the image processing software. The acquired photos are processed and calculated to obtain the percentage of the exposed area of ​​the film after knocking to the total knocking area, and the knocking value is calculated. Compared with the human eye observation rating, it is more accurate and scientific.

[0028] The technical solution of the present invention is further described in detail below through the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 This is an overall diagram of a system and method for testing a laminated glass interlayer knocking test according to the present invention;

[0030] Figure 2 This is a diagram showing the positions of a knocking device, a fixing device, and a waste collection device on a control device of a knocking test system for an interlayer for laminated glass according to the present invention;

[0031] Figure 3 This is a structural diagram of a fixing device of a test system for an intermediate layer knocking test for laminated glass according to the present invention;

[0032] Figure 4 This is a flow chart of a method for testing a knock test on an intermediate layer for laminated glass according to the present invention;

[0033] Figure 5 A graph showing the surface area ratios and knock values ​​of three types of exposed films in a knock test method for an intermediate layer for laminated glass according to the present invention;

[0034] Reference numerals

[0035] 1. Control device; 11. Main body; 12. First control panel; 13. Second control panel; 131. Data transmission line; 132. Host computer; 2. Sound insulation device; 21. Sound insulation cover; 22. Sound insulation cotton; 23. Observation window; 3. Tapping device; 31. Automatic tapping hammer; 32. Drive shaft; 33. Fixing rod; 4. Fixing device; 41. Sample stage; 42. Sample tray; 421. Sample clamping device; 43. Up and down transmission device; 44. Left and right transmission Device; 45. Lifting ruler; 46. Lifting adjustment device; 461. Angle adjuster; 5. Waste collection device; 51. Waste box; 52. First baffle; 53. Second baffle; 54. Waste collection tray; 541. Handle; 542. Roller; 6. Tool box; 61. Box body; 62. Illuminator; 63. Detector; 64. Marker; 65. Amplifier; 7. Acquisition and processing device; 71. Shooting box; 72. High-speed industrial camera; 73. Sample rack. DETAILED DESCRIPTION

[0036] Example

[0037] To make the objectives, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions of the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings herein can be arranged and designed in various different configurations.

[0038] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention as claimed, but rather merely represents selected embodiments of the present invention. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without creative effort shall fall within the scope of protection of the present invention.

[0039] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not need to be further defined or explained in subsequent drawings.

[0040] In the description of the present invention, it should be noted that the terms "upper", "lower", "inside", "outside", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, or are the orientations or positional relationships in which the inventive product is usually placed when in use. 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. Therefore, they should not be understood as limiting the present invention.

[0041] In the description of the present invention, it should also be noted that, unless otherwise expressly specified or limited, the terms "disposed," "installed," and "connected" should be understood broadly. For example, they may refer to fixed, detachable, or integral connections; mechanical or electrical connections; direct or 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 the present invention based on the specific circumstances.

[0042] The following embodiments of the present invention are described in detail with reference to the accompanying drawings. In the absence of conflict, the following embodiments and features in the embodiments may be combined with each other.

[0043] like Figure 1-Figure 3 As shown, the present invention provides an interlayer knocking test system for laminated glass, comprising a control device 1, a sound insulation device 2, a knocking device 3, a fixing device 4, a waste collection device 5, a tool box 6 and a collection and processing device 7. The sound insulation device 2 and the collection and processing device 7 are arranged at both ends of the upper side of the control device 1, and the tool box 6 is also arranged on the upper side of the control device 1, located between the sound insulation device 2 and the collection and processing device 7. The knocking device 3 and the fixing device 4 are both located inside the sound insulation device 2 and fixed on the upper side of the control device 1, and the waste collection device 5 is located inside the control device 1 below the sound insulation device 2.

[0044] The control device 1 includes a main body 11, a first control panel 12 and a second control panel 13. The first control panel 12 and the second control panel 13 are arranged on the same side of the main body 11 and at both ends of the main body 11. The second control panel 13 is located below the acquisition and processing device 7 and is connected to the acquisition and processing device 7. The second control panel 13 is also connected to a host computer 132 installed with image processing software through a data transmission line 131. The first control panel 12 is located at one end of the main body 11 away from the second control panel 13, and the first control panel 12 is connected to the knocking device 3 and the fixing device 4.

[0045] The sound insulation device 2 includes a sound insulation cover 21 , a sound insulation cotton 22 is provided inside the sound insulation cover 21 , and an observation window 23 is also provided on the sound insulation cover 21 .

[0046] The knocking device 3 includes an automatic knocking hammer 31, a transmission shaft 32 and a fixed rod 33. One end of the fixed rod 33 is connected to the main body 11, and the other end is connected to the transmission shaft 32. The automatic knocking hammer 31 is fixed to the end of the transmission shaft 32 away from the fixed rod 33. The transmission shaft 32 is also connected to the first control panel 12.

[0047] The fixing device 4 includes a sample table 41, a sample tray 42, an upper and lower transmission device 43, a left and right transmission device 44, a lifting ruler 45 and a lifting adjustment device 46. The sample tray 42 is arranged on the sample table 41. At the same time, a sample clamping device 421 is arranged on all four sides of the upper side of the sample tray 42. The upper and lower transmission devices 43 are composed of two devices arranged on the upper and lower sides of the sample table 41. The left and right transmission devices 44 pass through the middle position of the sample table 41 and are connected to the upper and lower transmission devices 43. The lifting ruler 45 is arranged below the lower upper and lower transmission devices 43. One end of the lifting adjustment device 46 is sleeved on the outside of the lifting ruler 45, and the other end is connected to the lower side of the sample table 41 through an angle adjuster 461.

[0048] The waste collection device 5 includes a waste box 51, a first baffle 52, a second baffle 53 and a waste collection tray 54. The middle position of the upper side of the waste box 51 is located below the tilt direction of the sample stage 41. One end of the first baffle 52 and the second baffle 53 are set on both sides of the upper side of the waste box 51, and the other ends are both located inside the waste box 51. The waste collection tray 54 is located inside the waste box 51 and below the first baffle 52 and the second baffle 53. The waste collection tray 54 is provided with a handle 541 and a roller 542 for facilitating the removal of the waste collection tray 54.

[0049] The toolbox 6 includes a box body 61, an illuminator 62, a detector 63, a marker 64 and an amplifier 65. The box body 61 is fixed between the soundproof cover 21 and the acquisition and processing device 7 above the main body 11. The illuminator 62 is located on one side inside the box body 61 and is also fixed on the main body 11. The detector 63, marker 64 and amplifier 65 are located at one end of the box body 61 away from the illuminator 62 and are arranged in order up and down.

[0050] The acquisition and processing device 7 includes a shooting box 71, a high-speed industrial camera 72 and a sample rack 73. The shooting box 71 is located at the end of the upper box 61 of the main body 11 away from the sound insulation cover 21. The high-speed industrial camera 72 is set at the top of the shooting box 71 and can adjust the height and position. The sample rack 73 is fixed above the main body 11 inside the shooting box 71 and is located in the middle position below the shooting box 71.

[0051] like Figure 4 、 Figure 5 The present invention provides a method for testing a knock test on an intermediate layer for laminated glass, which uses the above-mentioned knock test system for an intermediate layer for laminated glass, including the following steps:

[0052] S1. Fix the sample on the sample plate 42 in the sample stage 41 through the sample clamping device 421, and then adjust the angle between the sample stage 41 and the ground through the lifting ruler 45, the lifting adjustment device 46 and the angle adjuster 461;

[0053] S2. Set the striking force and frequency of the automatic striking hammer 31 and the transmission shaft 32 through the first control panel 12, then set the upper and lower transmission devices 43 and the left and right transmission devices 44 to adjust the transmission speed of the sample, and start the striking device 3;

[0054] S3, after the knocking device 3 completes the knocking, the knocked sample is sent to the tool box 6, the illuminator 62 is turned on, the sample is magnified by the amplifier 65, the detector 63 is used to distinguish between film and glass, and finally the marker 64 marks the exposed film on the sample surface;

[0055] S4, sending the marked samples in the tool box 6 to the sample rack 73 of the collection and processing device 7, and then photographing the marked samples with a high-speed industrial camera 72 to obtain sample photos;

[0056] S5. The second control panel 13 transmits the sample photo to the image processing software via the data transmission line 131. The photo is processed by the image processing software to obtain the percentage of the exposed film area to the total sample area, and the knock value is calculated to complete the knock test.

[0057] In S2 , the glass fragments generated by the knocking device 3 enter the waste collection tray 54 through the first baffle 52 and the second baffle 53 .

[0058] Depend on Figure 5 It can be obtained that the surface area of ​​the exposed film of the sample after the three test tapping accounts for 12.123%, 14.289% and 1.767% respectively. Referring to the determination of the tapping value in Table 1, it can be obtained that the tapping values ​​of the three tests are 6, 6 and 9 respectively.

[0059] Table 1 Knock value determination table

[0060]

[0061] Therefore, the present invention adopts a test system and method for the interlayer knocking test of laminated glass of the above structure, which integrates the knocking-marking-photographing-rating process to facilitate the rapid measurement of test results; the sample is fixed on the sample table by a clamping device to prevent frostbite or cuts that may be caused to the experimenter holding the sample, and combined with the angle adjustment device and the lifting device, the angle between the sample table and the ground can be flexibly changed to adapt to different standard requirements; the knocking force and frequency can be changed through the control panel to ensure uniform knocking force and good measurement consistency, while reducing labor costs, and the up and down and left and right transmission devices on the sample table can also be controlled through the control panel to realize constant speed transmission of the sample, ensuring that each position of the sample is evenly knocked; equipped with The waste box on the baffle collects the waste generated by knocking. The waste box is easy to extract and convenient for cleaning glass fragments. A soundproof cover with sound-absorbing cotton is used to effectively reduce noise pollution and prevent glass fragments from flying and injuring people. The soundproof cover is equipped with an observation window to facilitate experimenters to observe and control the knocking process. The toolbox contains detectors, markers, amplifiers, illuminators, etc., which are convenient for marking samples after knocking. The acquisition and processing device uses a high-speed industrial camera to take photos of the marked samples after knocking, exports the image information through a data transmission tool, and imports it into the image processing software. The acquired photos are processed and calculated to obtain the percentage of the exposed area of ​​the film after knocking to the total knocking area, and calculate the knocking value. Compared with the human eye observation rating, it is more accurate and scientific.

[0062] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit the same. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that they can still modify or replace the technical solutions of the present invention with equivalents, and these modifications or equivalent replacements cannot cause the modified technical solutions to deviate from the spirit and scope of the technical solutions of the present invention.

Claims

1. A test system for an intermediate layer tapping test of laminated glass, characterized by: It includes a control device, a sound insulation device, a knocking device, a fixing device, a waste collection device, a tool box and a collection and processing device. The sound insulation device and the collection and processing device are arranged at both ends of the upper side of the control device. The tool box is also arranged on the upper side of the control device, located between the sound insulation device and the collection and processing device. The knocking device and the fixing device are both located inside the sound insulation device and fixed on the upper side of the control device. The waste collection device is located inside the control device below the sound insulation device.

2. The interlayer knock test system for laminated glass according to claim 1, characterized in that: The control device includes a main body, a first control panel and a second control panel. The first control panel and the second control panel are arranged on the same side of the main body and at both ends of the main body. The second control panel is located below the acquisition and processing device and is connected to the acquisition and processing device. The second control panel is also connected to a host computer installed with image processing software through a data transmission line. The first control panel is located at one end of the main body away from the second control panel, and the first control panel is connected to the knocking device and the fixing device.

3. The interlayer knock test system for laminated glass according to claim 2, characterized in that: The sound insulation device comprises a sound insulation cover, sound insulation cotton is arranged on the inner side of the sound insulation cover, and an observation window is also arranged on the sound insulation cover.

4. The interlayer knock test system for laminated glass according to claim 3, characterized in that: The knocking device includes an automatic knocking hammer, a transmission shaft and a fixed rod, one end of the fixed rod is connected to the main body, and the other end is connected to the transmission shaft. The automatic knocking hammer is fixed to the end of the transmission shaft away from the fixed rod, and the transmission shaft is also connected to the first control panel.

5. The interlayer knock test system for laminated glass according to claim 4, characterized in that: The fixing device includes a sample table, a sample tray, an upper and lower transmission device, a left and right transmission device, a lifting ruler and a lifting adjustment device. The sample tray is set on the sample table. At the same time, a sample clamping device is set on all four sides of the upper side of the sample tray. The upper and lower transmission devices are composed of two devices set on the upper and lower sides of the sample table. The left and right transmission devices pass through the middle position of the sample table and are connected to the upper and lower transmission devices. The lifting ruler is set below the lower upper and lower transmission devices. One end of the lifting adjustment device is sleeved on the outside of the lifting ruler, and the other end is connected to the lower side of the sample table through an angle adjuster.

6. The interlayer knock test system for laminated glass according to claim 5, characterized in that: The waste collection device includes a waste box, a first baffle, a second baffle and a waste collection tray. The middle position of the upper side of the waste box is located below the inclined direction of the sample table. One end of the first baffle and the second baffle are arranged on both sides of the upper side of the waste box, and the other ends are both located inside the waste box. The waste collection tray is located inside the waste box and below the first baffle and the second baffle. The waste collection tray is provided with a handle and a roller for facilitating the removal of the waste collection tray.

7. The interlayer knock test system for laminated glass according to claim 6, characterized in that: The toolbox includes a box body, an illuminator, a detector, a marker and an amplifier. The box body is fixed between the sound insulation cover and the acquisition and processing device above the main body. The illuminator is located on one side inside the box body and is also fixed on the main body. The detector, marker and amplifier are located at one end of the box body away from the illuminator and are arranged in order up and down.

8. The interlayer knock test system for laminated glass according to claim 7, characterized in that: The acquisition and processing device includes a shooting box, a high-speed industrial camera and a sample rack. The shooting box is located at the end of the upper side of the main body away from the sound insulation cover. The high-speed industrial camera is set at the top of the shooting box and can adjust the height and position. The sample rack is fixed above the main body inside the shooting box and is located in the middle position below the shooting box.

9. A method for testing an interlayer tapping test for laminated glass, characterized in that: The interlayer knock test system for laminated glass according to any one of claims 1 to 8 comprises the following steps: S1. Fix the sample on the sample stage using the sample clamping device, and then adjust the angle between the sample stage and the ground using the lifting ruler, lifting adjustment device and angle adjuster; S2. Setting the striking force and frequency of the automatic striking hammer and the transmission shaft through the first control panel, then setting the upper and lower transmission devices and the left and right transmission devices to adjust the transmission speed of the sample, and starting the striking device; S3. After the knocking device completes the knocking, it puts the knocked sample into the tool box, turns on the illuminator, uses the amplifier to magnify the sample, uses the detector to distinguish between film and glass, and finally uses the marker to mark the exposed film on the sample surface; S4, sending the marked samples in the tool box to the sample rack of the collection and processing device, and then photographing the marked samples with a high-speed industrial camera to obtain sample photos; S5. The second control panel transmits the sample photo to the image processing software through the data transmission line, processes the photo using the image processing software, obtains the percentage of the exposed film area to the total sample area, calculates the knock value, and completes the knock test.

10. The method for testing an interlayer tapping test for laminated glass according to claim 9, wherein: In S2 , the glass fragments generated by the knocking device enter the waste collection tray through the first baffle and the second baffle.

Images