Float glass copper-silver mirror surface treatment polishing device

Abstract

The utility model provides a float glass copper-silver mirror surface treatment polishing device, and relates to the technical field of glass copper-silver mirror production, the float glass copper-silver mirror surface treatment polishing device comprises a waste scrap collecting box, and a dust collecting pipeline is fixedly mounted on the inner wall of one side of the waste scrap collecting box; a float glass copper-silver mirror is placed on a suction cup above a float glass copper-silver mirror placing plate, and a second air pump and a connecting pipeline are controlled to adsorb air between the suction cup and the float glass copper-silver mirror, so that the float glass copper-silver mirror can be attached and fixed above the suction cup; after fixing is completed, a float glass copper-silver mirror containing plate can be placed on the top of a conveying belt, an electric telescopic rod is controlled to drive a connecting frame and a closed machining box to descend, the closed machining box slides into the inner side of a sealing groove above the float glass copper-silver mirror containing plate, and the closed machining box and the float glass copper-silver mirror containing plate can be in a closed state.

Description

Technical Field

[0001] This utility model relates to the field of glass copper-silver mirror production technology, and in particular to a surface treatment and polishing device for float glass copper-silver mirrors. Background Technology

[0002] Float glass copper-silver mirrors are widely used in architectural decoration, furniture manufacturing, and other fields. Surface treatment and polishing are crucial steps in their production. Currently, existing polishing equipment has many shortcomings. Traditional polishing equipment mostly uses a fixed polishing method, making it difficult to flexibly adjust according to the different thicknesses and surface conditions of the glass. This results in poor polishing effects and uneven polishing, affecting the flatness and gloss of the glass.

[0003] When in use, the existing device requires staff to fix it with multiple devices and manually hold the grinding disc to grind it. During the grinding process, it is necessary to manually change various grinding discs with different grits, which makes the work efficiency low. Therefore, we propose a surface treatment grinding device for float glass copper silver mirror. Utility Model Content

[0004] In view of this, this application provides a surface treatment and polishing device for float glass copper-silver mirrors, which solves the above technical problems to a certain extent.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A float glass copper-silver mirror surface treatment and polishing device includes a waste collection box, a dust collection pipe is fixedly installed on one inner wall of the waste collection box, and a float glass copper-silver mirror adsorption and polishing component is arranged above the waste collection box and the dust collection pipe.

[0007] The float glass copper-silver mirror adsorption and polishing assembly includes an electric telescopic rod, a connecting frame, a sealed processing box, a conveyor belt, and a float glass copper-silver mirror placement plate. The electric telescopic rod is fixedly installed on the top front and rear sides of the waste collection box. The connecting frame is fixedly installed on the output end of the electric telescopic rod. The sealed processing box is fixedly installed on the bottom of the connecting frame. The conveyor belt is rotatably installed on one side of the waste collection box. The float glass copper-silver mirror placement plate is located on top of the conveyor belt.

[0008] Preferably, a collection drawer is slidably installed on the left side of the waste collection box, a fixing bolt is threaded on one side of the collection drawer, the fixing bolt is threaded on the inner side of the waste collection box, a knob is fixedly installed on the outer side of one end of the fixing bolt, a first air pump is fixedly installed on the front side of the waste collection box, an air extraction pipe is fixedly installed on the output end of the first air pump, the output end of the air extraction pipe is fixedly installed on the front side of the waste collection box, and a float glass copper silver mirror dust collection component is provided above the float glass copper silver mirror adsorption and polishing component.

[0009] Preferably, the float glass copper-silver mirror adsorption and polishing assembly includes a suction cup, a connecting pipe, a second air pump, and a sealing groove. The suction cup is fixedly installed at the four corners of the top inner wall of the float glass copper-silver mirror placement plate. The connecting pipe is fixedly installed inside the suction cup. The second air pump is fixedly installed inside the float glass copper-silver mirror placement plate. One end of the connecting pipe is fixedly installed at the output end of the second air pump. The sealing groove is opened at the top of the float glass copper-silver mirror placement plate.

[0010] By adopting the above technical solution, the float glass copper-silver mirror is placed on the suction cup above the float glass copper-silver mirror placement plate. The second air pump and connecting pipe are controlled to adsorb the air between the suction cup and the float glass copper-silver mirror, so that the float glass copper-silver mirror can be attached and fixed above the suction cup. After fixing, the float glass copper-silver mirror placement plate can be placed on the top of the conveyor belt. The electric telescopic rod is controlled to drive the connecting frame and the sealed processing box to descend, so that the sealed processing box slides into the sealing groove above the float glass copper-silver mirror placement plate, so that the sealed processing box and the float glass copper-silver mirror placement plate are in a sealed state.

[0011] Preferably, the float glass copper-silver mirror polishing dust collection assembly includes a first motor, a first drive shaft, a fixed box, a second motor, a lead screw, and a sliding frame. The first motor is fixedly installed on the top of the sealed processing box, the first drive shaft is fixedly installed on the output end of the first motor, the fixed box is fixedly installed on the bottom of the first drive shaft, the second motor is fixedly installed on one inner wall of the fixed box, the lead screw is fixedly installed on the output end of the second motor, and the sliding frame is threaded onto the outside of the lead screw.

[0012] By adopting the above technical solution, the third motor is controlled to drive the second drive shaft and the lens polishing disc to rotate. The lens polishing disc can polish the float glass copper-silver mirror. The first motor is controlled to drive the first drive shaft and the fixed box to rotate, which can adjust the position of the lens polishing disc. The second motor is controlled to drive the lead screw to rotate. The lead screw can drive the sliding frame and the lens polishing disc below to slide through the threaded connection, which can increase the polishing range of the lens polishing disc on the float glass copper-silver mirror.

[0013] Preferably, the float glass copper-silver mirror polishing dust collection assembly further includes a third motor, a second drive shaft, a lens polishing disc, and a dust collection hose. The third motor is fixedly installed at the bottom of the sliding frame, the second drive shaft is fixedly installed at the output end of the third motor, the lens polishing disc is fixedly installed at the bottom of the second drive shaft, one end of the dust collection hose is fixedly installed at the top of the sealed processing box, and the other end of the dust collection hose is fixedly installed inside the dust collection pipe.

[0014] By adopting the above technical solution, the device is equipped with multiple lens polishing discs with different grit numbers. In the initial polishing stage, a lower grit lens polishing disc is usually used; its abrasive particles are larger and its cutting force is strong, which can quickly remove larger uneven parts such as blemishes, scratches, and protrusions from the surface of the float glass copper-silver mirror, so that the glass surface initially reaches a flat state, laying the foundation for subsequent fine polishing. After coarse polishing, a medium grit lens polishing disc is used. At this stage, the abrasive particles are moderate, which can further flatten the glass surface while reducing surface roughness, making the glass surface smoother and initially improving the glass's gloss. Finally, a high grit lens polishing disc is used, with fine abrasive particles. Its main function is to perform fine polishing on the glass surface, further reducing surface roughness, significantly improving the flatness and gloss of the glass, so that the glass reaches the required high-precision surface quality standards, meeting the strict requirements for glass surface quality in different application scenarios such as architectural decoration and furniture manufacturing.

[0015] Preferably, the rear side of the fixed box is provided with a sliding groove, and the sliding frame is slidably installed on the inner side of the sliding groove. The shape of the sliding frame is U-shaped.

[0016] Preferably, the top of the float glass copper-silver mirror placement plate is provided with a float glass copper-silver mirror placement groove, and the suction cup is fixedly installed on the inner side of the float glass copper-silver mirror placement groove.

[0017] Preferably, a filter screen is provided at the connection between the exhaust pipe and the waste collection box, a threaded hole is provided on the left side of the waste collection box, the fixing bolt engages with the threaded hole, a waste inlet groove is provided on the right side of the waste collection box, and the dust collection pipe is fitted into the waste inlet groove.

[0018] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0019] (1) The float glass copper silver mirror surface treatment and polishing device of this utility model, through the float glass copper silver mirror adsorption and polishing component, places the float glass copper silver mirror on the suction cup above the float glass copper silver mirror placement plate, controls the second air pump and connecting pipe to adsorb the air between the suction cup and the float glass copper silver mirror, so that the float glass copper silver mirror can be attached and fixed above the suction cup. After the fixation is completed, the float glass copper silver mirror placement plate can be placed on the top of the conveyor belt, and the electric telescopic rod is controlled to drive the connecting frame and the sealed processing box to descend, so that the sealed processing box slides into the sealing groove above the float glass copper silver mirror placement plate, so that the sealed processing box and the float glass copper silver mirror placement plate are in a sealed state.

[0020] (2) The float glass copper-silver mirror surface treatment and polishing device of this utility model, through the set float glass copper-silver mirror polishing dust collection component, controls the third motor to drive the second drive shaft and the lens polishing disc to rotate. The lens polishing disc can polish the float glass copper-silver mirror. Control the first motor to drive the first drive shaft and the fixed box to rotate, which can adjust the position of the lens polishing disc. Control the second motor to drive the lead screw to rotate. The lead screw can drive the sliding frame and the lens polishing disc below to slide through the threaded engagement, which can increase the polishing range of the float glass copper-silver mirror by the lens polishing disc.

[0021] To make the above-mentioned objectives, features and advantages of this application more apparent and understandable, preferred embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description

[0022] Figure 1 This is a three-dimensional structural diagram of a surface treatment and polishing device for float glass copper-silver mirror proposed in this utility model;

[0023] Figure 2 This is a schematic diagram showing a three-dimensional view of a surface treatment and polishing apparatus for a float glass copper-silver mirror according to an embodiment of this application;

[0024] Figure 3 This is a schematic diagram showing a three-dimensional side view of a surface treatment and polishing apparatus for a float glass copper-silver mirror according to an embodiment of this application;

[0025] Figure 4 This is a schematic diagram showing a three-dimensional cross-sectional view of a surface treatment and polishing apparatus for a float glass copper-silver mirror according to an embodiment of this application;

[0026] Figure 5 This is a schematic diagram showing a three-dimensional cross-sectional view of a surface treatment and polishing apparatus for a float glass copper-silver mirror according to an embodiment of this application.

[0027] Figure label:

[0028] 1. Adsorption and polishing assembly for float glass copper-silver mirrors; 2. Dust collection assembly for polishing float glass copper-silver mirrors; 3. Waste collection box; 4. Collection drawer; 5. Fixing bolts; 6. Knob; 7. First air pump; 8. Air extraction pipe; 9. Dust collection pipe;

[0029] 11. Electric telescopic pole; 12. Connecting frame; 13. Sealed processing box; 14. Conveyor belt; 15. Float glass copper-silver mirror placement plate; 16. Suction cup; 17. Connecting pipe; 18. Second air pump; 19. Sealing groove;

[0030] 21. First motor; 22. First drive shaft; 23. Fixed box; 24. Second motor; 25. Lead screw; 26. Sliding frame; 27. Third motor; 28. Second drive shaft; 29. ​​Lens polishing disc; 30. Vacuum suction hose. Detailed Implementation

[0031] To further understand the invention content, features and effects of this utility model, the following embodiments are provided, and detailed descriptions are given below in conjunction with the accompanying drawings;

[0032] The structure of this utility model will now be described in detail with reference to the accompanying drawings.

[0033] refer to Figure 1-5 A float glass copper-silver mirror surface treatment and polishing device includes a waste collection box 3, a dust collection pipe 9 is fixedly installed on one inner wall of the waste collection box 3, and a float glass copper-silver mirror adsorption and polishing component 1 is arranged above the waste collection box 3 and the dust collection pipe 9.

[0034] The float glass copper-silver mirror adsorption and polishing assembly 1 includes an electric telescopic rod 11, a connecting frame 12, a sealed processing box 13, a conveyor belt 14, and a float glass copper-silver mirror placement plate 15. The electric telescopic rod 11 is fixedly installed on the front and rear sides of the top of the waste collection box 3. The connecting frame 12 is fixedly installed on the output end of the electric telescopic rod 11. The sealed processing box 13 is fixedly installed on the bottom of the connecting frame 12. The conveyor belt 14 is rotatably installed on one side of the waste collection box 3. The float glass copper-silver mirror placement plate 15 is set on the top of the conveyor belt 14. By controlling the electric telescopic rod 11 to drive the connecting frame 12 and the sealed processing box 13 to descend, the sealed processing box 13 slides into the sealing groove 19 above the float glass copper-silver mirror placement plate 15, so that the sealed processing box 13 and the float glass copper-silver mirror placement plate 15 are in a sealed state, thereby preventing the waste generated during the polishing process from overflowing.

[0035] In this embodiment, a collection drawer 4 is slidably installed on the left side of the waste collection box 3. A fixing bolt 5 is threaded on one side of the collection drawer 4. The fixing bolt 5 is threaded on the inner side of the waste collection box 3. A knob 6 is fixedly installed on the outer side of one end of the fixing bolt 5. A first air pump 7 is fixedly installed on the front side of the waste collection box 3. An air extraction pipe 8 is fixedly installed at the output end of the first air pump 7. The output end of the air extraction pipe 8 is fixedly installed on the front side of the waste collection box 3. A float glass copper silver mirror dust collection component 2 is provided above the float glass copper silver mirror adsorption and polishing component 1.

[0036] In this embodiment, the float glass copper-silver mirror adsorption and polishing assembly 1 includes a suction cup 16, a connecting pipe 17, a second air pump 18, and a sealing groove 19. The suction cup 16 is fixedly installed at the four corners of the top inner wall of the float glass copper-silver mirror placement plate 15. The connecting pipe 17 is fixedly installed inside the suction cup 16. The second air pump 18 is fixedly installed inside the float glass copper-silver mirror placement plate 15. One end of the connecting pipe 17 is fixedly installed at the output end of the second air pump 18. The sealing groove 19 is opened at the top of the float glass copper-silver mirror placement plate 15.

[0037] In this embodiment, the float glass copper silver mirror polishing dust collection assembly 2 includes a first motor 21, a first drive shaft 22, a fixed box 23, a second motor 24, a lead screw 25, and a sliding frame 26. The first motor 21 is fixedly installed on the top of the sealed processing box 13, the first drive shaft 22 is fixedly installed on the output end of the first motor 21, the fixed box 23 is fixedly installed on the bottom of the first drive shaft 22, the second motor 24 is fixedly installed on one side inner wall of the fixed box 23, the lead screw 25 is fixedly installed on the output end of the second motor 24, and the sliding frame 26 is threaded onto the outside of the lead screw 25.

[0038] In this embodiment, the float glass copper-silver mirror polishing dust collection assembly 2 also includes a third motor 27, a second drive shaft 28, a lens polishing disc 29, and a dust collection hose 30. The third motor 27 is fixedly installed at the bottom of the sliding frame 26, the second drive shaft 28 is fixedly installed at the output end of the third motor 27, the lens polishing disc 29 is fixedly installed at the bottom of the second drive shaft 28, one end of the dust collection hose 30 is fixedly installed at the top of the sealed processing box 13, and the other end of the dust collection hose 30 is fixedly installed inside the dust collection pipe 9. Controlling the first motor 21 to drive the first drive shaft 22 and the fixed box 23 to rotate can adjust the position of the lens polishing disc 29. Controlling the second motor 24 to drive the lead screw 25 to rotate can cause the sliding frame 26 and the lens polishing disc 29 below to slide through the threaded engagement, which can increase the polishing range of the float glass copper-silver mirror by the lens polishing disc 29.

[0039] In this embodiment, a groove is provided on the rear side of the fixed box 23, and the sliding frame 26 is slidably installed on the inner side of the groove. The sliding frame 26 is U-shaped. The cooperation between the groove and the sliding frame 26 allows the fixed box 23 to be in a closed state, so that the waste generated during the grinding process is not easy to enter the top of the lead screw 25, making the device operate more stably.

[0040] In this embodiment, a float glass copper-silver mirror placement plate 15 has a float glass copper-silver mirror placement groove on its top, and a suction cup 16 is fixedly installed inside the float glass copper-silver mirror placement groove. The float glass copper-silver mirror is placed on the suction cup 16 above the float glass copper-silver mirror placement plate 15. The second air pump 18 and the connecting pipe 17 are controlled to adsorb the air between the suction cup 16 and the float glass copper-silver mirror, so that the float glass copper-silver mirror can be attached and fixed above the suction cup 16. After polishing, the second air pump 18 can supply air to the suction cup 16, and after it is loosened, it is easy for the staff to take out the float glass copper-silver mirror.

[0041] In this embodiment, a filter screen is provided at the connection between the exhaust pipe 8 and the waste collection box 3. A threaded hole is provided on the left side of the waste collection box 3, and the fixing bolt 5 is engaged with the threaded hole. A waste inlet groove is provided on the right side of the waste collection box 3, and the dust collection pipe 9 is in contact with the waste inlet groove. The waste inlet groove allows the waste absorbed by the vacuum hose 30 to enter the inside of the waste collection box 3 through the dust collection pipe 9. The waste can enter the inside of the collection drawer 4 for unified collection and treatment, making it convenient for staff to take out the collection drawer 4 to clean the waste.

[0042] The specific operation is as follows: The float glass copper-silver mirror is placed on the suction cup 16 above the float glass copper-silver mirror placement plate 15. The second air pump 18 and connecting pipe 17 are controlled to adsorb the air between the suction cup 16 and the float glass copper-silver mirror, allowing the float glass copper-silver mirror to adhere and fix itself above the suction cup 16. After fixing, the float glass copper-silver mirror placement plate 15 can be placed on top of the conveyor belt 14. The electric telescopic rod 11 is controlled to drive the connecting frame 12 and the sealed processing box 13 to descend, causing the sealed processing box 13 to slide into the sealing groove 19 above the float glass copper-silver mirror placement plate 15, allowing the sealed processing box to... The work box 13 and the float glass copper-silver mirror placement plate 15 are in a sealed state. The third motor 27 drives the second drive shaft 28 and the mirror polishing disc 29 to rotate. The mirror polishing disc 29 can polish the float glass copper-silver mirror. The first motor 21 drives the first drive shaft 22 and the fixed box 23 to rotate, which can adjust the position of the mirror polishing disc 29. The second motor 24 drives the lead screw 25 to rotate. The lead screw 25 can drive the sliding frame 26 and the mirror polishing disc 29 below to slide through the threaded engagement, which can adjust the polishing range of the mirror polishing disc 29 on the float glass copper-silver mirror. In addition, the waste generated during the polishing process can be transferred through the vacuum hose 30 to the inside of the collection drawer 4 of the dust collection pipe 9. The staff can then remove the collection drawer 4 to collect and process the waste. The device is equipped with multiple lens polishing discs 29, each with a different grit. Initially, a lower grit disc 29 is typically used; its larger abrasive particles and stronger cutting force allow for the rapid removal of larger uneven areas such as blemishes, scratches, and protrusions from the surface of the float glass copper-silver mirror, achieving a preliminary smooth surface and laying the foundation for subsequent fine polishing. After the initial rough grinding, a medium-grit lens polishing disc 29 is used. At this stage, the abrasive particles are moderate, which further smooths the glass surface while reducing surface roughness, making the glass surface smoother and initially improving the glass's gloss. Finally, a high-grit lens polishing disc 29 is used. Its abrasive particles are fine, and its main function is to perform fine polishing on the glass surface, further reducing surface roughness and significantly improving the flatness and gloss of the glass. This allows the glass to reach the required high-precision surface quality standards, meeting the stringent requirements for glass surface quality in different application scenarios such as architectural decoration and furniture manufacturing.

[0043] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0044] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A float glass copper-silver mirror surface treatment polishing apparatus, characterized by, Include: The waste collection box (3), the inner wall of one side of the waste collection box (3) is fixedly installed with dust collection pipeline (9), the upper of the waste collection box (3) and dust collection pipeline (9) is provided with float glass copper silver mirror adsorption polishing assembly (1); The float glass copper silver mirror adsorption polishing assembly (1) includes an electric telescopic rod (11), a connecting frame (12), a sealed processing box (13), a conveyor belt (14) and a float glass copper silver mirror placing plate (15), the electric telescopic rod (11) is fixedly installed on the top of the waste collection box (3), the connecting frame (12) is fixedly installed on the output end of the electric telescopic rod (11), the sealed processing box (13) is fixedly installed on the bottom of the connecting frame (12), the conveyor belt (14) is rotatably installed on one side of the waste collection box (3), and the float glass copper silver mirror placing plate (15) is arranged on the top of the conveyor belt (14).

2. A device for polishing a copper-silver mirror surface of a float glass according to claim 1, wherein The left side of the waste collection box (3) is slidably installed with a collection drawer (4), one side of the collection drawer (4) is screwedly installed with a fixing bolt (5), the fixing bolt (5) is screwedly installed on the inner side of the waste collection box (3), one end of the fixing bolt (5) is fixedly installed with a knob (6) on the outer side, the front side of the waste collection box (3) is fixedly installed with a first air pump (7), the output end of the first air pump (7) is fixedly installed with an air suction pipeline (8), and the output end of the air suction pipeline (8) is fixedly installed on the front side of the waste collection box (3). The upper of the float glass copper silver mirror adsorption polishing assembly (1) is provided with a float glass copper silver mirror polishing dust collection assembly (2).

3. A device for polishing a copper-silver mirror surface of a float glass according to claim 1, wherein The float glass copper silver mirror adsorption polishing assembly (1) includes a suction cup (16), a connecting pipeline (17), a second air pump (18) and a sealing groove (19), the suction cup (16) is fixedly installed on the top inner wall of the float glass copper silver mirror placing plate (15), the connecting pipeline (17) is fixedly installed on the inner side of the suction cup (16), the second air pump (18) is fixedly installed on the inner side of the float glass copper silver mirror placing plate (15), one end of the connecting pipeline (17) is fixedly installed on the output end of the second air pump (18), and the sealing groove (19) is formed in the top of the float glass copper silver mirror placing plate (15).

4. A device for polishing a copper-silver mirror surface of a float glass according to claim 2, wherein The float glass copper silver mirror polishing dust collection assembly (2) includes a first motor (21), a first driving shaft (22), a fixed box (23), a second motor (24), a lead screw (25) and a sliding frame (26), the first motor (21) is fixedly installed on the top of the sealed processing box (13), the first driving shaft (22) is fixedly installed on the output end of the first motor (21), the fixed box (23) is fixedly installed on the bottom of the first driving shaft (22), the second motor (24) is fixedly installed on the inner wall of one side of the fixed box (23), the lead screw (25) is fixedly installed on the output end of the second motor (24), and the sliding frame (26) is screwedly installed on the outer side of the lead screw (25).

5. A device for polishing a copper-silver mirror surface of a float glass according to claim 2, wherein The float glass copper silver mirror polishing dust collection assembly (2) further includes a third motor (27), a second drive shaft (28), a lens polishing disc (29) and a dust collection hose (30), the third motor (27) is fixedly installed at the bottom of the sliding frame (26), the second drive shaft (28) is fixedly installed at the output end of the third motor (27), the lens polishing disc (29) is fixedly installed at the bottom of the second drive shaft (28), one end of the dust collection hose (30) is fixedly installed at the top of the closed processing box (13), and the other end of the dust collection hose (30) is fixedly installed at the inner side of the dust collection pipeline (9).

6. A device for polishing a copper-silver mirror surface of a float glass according to claim 4, wherein The rear side of the fixed box (23) is provided with a sliding groove, and the sliding frame (26) is slidingly installed at the inner side of the sliding groove.

7. A device for polishing a copper-silver mirror surface of a float glass according to claim 3, wherein The top of the float glass copper silver mirror placing plate (15) is provided with a float glass copper silver mirror placing groove, and the suction cup (16) is fixedly installed at the inner side of the float glass copper silver mirror placing groove.

8. A device for polishing a copper-silver mirror surface of a float glass according to claim 2, wherein The connecting part of the air suction pipeline (8) and the waste chip collection box (3) is provided with a filter screen, the left side of the waste chip collection box (3) is provided with a threaded hole, the fixed bolt (5) is engaged with the threaded hole, the right side of the waste chip collection box (3) is provided with a waste chip entering groove, and the dust collection pipeline (9) is attached to the waste chip entering groove.

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