Coffee machine tray inner hole processing device and processing technology

Abstract

The invention discloses a coffee machine tray inner hole processing device and a processing technology, and relates to the field of coffee machine tray processing, the coffee machine tray inner hole processing device comprises a workbench, the workbench is provided with a three-axis driving unit, the three-axis driving unit is provided with a mounting seat, the bottom of the mounting seat is provided with a driving seat, the bottom of the driving seat is provided with a hole-forming upper die, and the bottom of the hole-forming upper die is provided with a hole-forming lower die; a mounting plate is slidably connected to the side face of the mounting base in the vertical direction. According to the coffee machine tray inner hole machining device and technology, through mutual cooperation of the hole forming upper die, the forming lower die, the grinding head, the switching unit, the three-axis driving unit and the auxiliary machining mechanism, burrs on the surface of a supporting plate can be directly ground after hole forming machining of the supporting plate is completed; and additional grinding equipment is not needed for secondary treatment, so that the time required for processing the supporting plate is shortened, the processing efficiency of the supporting plate is remarkably improved, the equipment cost can be effectively reduced, and the processing work of the supporting plate of the coffee machine is facilitated.

Description

TECHNICAL FIELD

[0001] The present application relates to coffee machine tray processing technology, in particular to a coffee machine tray inner hole processing device and processing technology. BACKGROUND

[0002] The coffee machine is an automatic control machine for realizing the whole process of grinding, pressing, loading, brewing and removing residues of coffee. The coffee machine tray, as an important part of the coffee machine, is used to carry coffee cups and collect overflow. It is mainly composed of a bottom water collecting box and an upper tray plate. In order to facilitate the collection of overflow, the surface of the tray plate is often provided with a plurality of holes, such as rectangular holes.

[0003] The conventional rectangular hole processing of the tray plate is usually carried out by a punch press. However, due to the influence of punching precision and actual material of the tray plate, a large number of burrs are easily generated around the hole after processing. The conventional punch press can only punch the surface of the tray plate, so that the burrs on the surface need to be polished after the punching process is completed. Therefore, the overall processing cycle of the rectangular slot hole on the surface of the tray plate is long. Therefore, the present application provides a coffee machine tray inner hole processing device and processing technology to solve the above problems in the prior art. SUMMARY

[0004] The purpose of the present application is to provide a coffee machine tray inner hole processing device and processing technology to solve the above problems in the prior art.

[0005] In order to achieve the above purpose, the present application provides the following technical scheme: a coffee machine tray inner hole processing device, comprising a workbench, a three-axis driving unit is arranged on the workbench, an installation seat is arranged on the three-axis driving unit, a driving seat is installed at the bottom of the installation seat, a hole forming upper die is installed at the bottom of the driving seat, an installation plate is slidably connected to the side of the installation seat in the vertical direction, a polishing head is installed at the bottom of the installation plate, a switching unit is arranged between the driving seat and the installation plate, the switching unit is used to switch the hole forming upper die to move to the working position or switch the polishing head to move to the working position, a forming lower die is installed on the workbench, and a to-be-processed tray plate is placed on the surface of the forming lower die.

[0006] A vertical plate is arranged on the workbench, and an auxiliary processing mechanism is arranged outside the vertical plate, which is used to clamp and fix the to-be-processed tray plate.

[0007] Further, the three-axis driving unit comprises X-axis grooves symmetrically arranged on the top of the workbench, X-axis screws are arranged on the inner side of the X-axis grooves, the outer threads of the X-axis screws are connected with vertical columns, Z-axis grooves are arranged on the surface of the vertical columns on the side facing each other, Z-axis screws are arranged in the Z-axis grooves, the outer threads of the Z-axis screws are connected with horizontal seats, Y-axis grooves are arranged on the bottom of the horizontal seats, and Y-axis screws are arranged on the inner side of the Y-axis grooves.

[0008] Further, the vertical column is slidably connected with the inner side of the X-axis groove, the horizontal seat is slidably connected with the inner side of the Z-axis groove, the mounting seat is slidably connected with the inner side of the Y-axis groove, and the mounting seat is threadedly connected with the outer side of the Y-axis screw.

[0009] Further, the switching unit comprises a vertical groove arranged on the bottom of the mounting seat, a vertical plate is arranged on the top of the driving seat and slidably connected with the inner side of the vertical groove, tooth grooves are arranged on the side of the vertical plate and the mounting plate facing each other, a gear groove is arranged in the mounting seat, a transmission gear corresponding to the tooth groove is rotatably arranged on the inner side of the gear groove, the vertical plate and the mounting plate are respectively engaged on the two sides of the transmission gear through the tooth grooves, a switching electric rod is arranged on the top of the mounting seat, and the top of the extension end of the switching electric rod is fixedly connected with the mounting plate.

[0010] Further, the auxiliary machining mechanism comprises a lifting screw arranged on the surface of the vertical plate, a lifting block is threadedly connected with the outer side of the lifting screw, a lifting groove corresponding to the lifting block is arranged on the surface of the vertical plate, the lifting block is slidably connected with the inner side of the lifting groove, a U-shaped frame is arranged on the end of the lifting block, the U-shaped frame is slidably connected with the surface of the vertical plate, a bidirectional screw is arranged on the inner side of the U-shaped frame, extension plates are symmetrically threadedly connected with the two sides of the bidirectional screw, electric drive shafts are arranged on the surface of the two extension plates, rotating plates are fixedly connected with the ends of the two electric drive shafts facing each other, and clamping plates are slidably connected with the surface of the rotating plate in the vertical direction.

[0011] Further, vertical grooves are symmetrically arranged on the two sides of the surface of the rotating plate, vertical blocks are slidably connected with the inner walls of the vertical grooves on the two ends of the clamping plate, a synchronous gear is rotatably connected with the surface of the rotating plate, synchronous racks are arranged on the two vertical blocks on the two clamping plates, the two synchronous racks are respectively engaged on the two sides of the synchronous gear, and a clamping electric rod is arranged on the surface of the rotating plate.

[0012] Further, the surface of the workbench is symmetrically provided with back plates on both sides of the lower forming die, the surface of the back plate is slidably connected with a telescopic sleeve plate in the vertical direction, the inner side of the telescopic sleeve plate is slidably connected with a telescopic plate, the end of the telescopic plate is fixedly connected with a positioning plate, the bottom surface of the telescopic sleeve plate is provided with a positioning electric rod, the telescopic end of the positioning electric rod is fixedly connected with the telescopic plate, the surface of the back plate is provided with a lifting electric rod, and the top of the telescopic end of the lifting electric rod is fixedly connected with the telescopic sleeve plate.

[0013] Further, the surface of the clamping plate is provided with a U-shaped groove, the inner side of the U-shaped groove is slidably connected with an adjusting plate, the surface of the rotating plate is provided with a threaded groove, the inner side of the threaded groove is threadedly connected with an adjusting screw, the end of the adjusting screw is rotatably connected with the adjusting plate, and the two sides of the surface of the adjusting plate are fixedly connected with guide rods.

[0014] The application also provides a coffee machine tray inner hole processing technology, which adopts the coffee machine tray inner hole processing device.

[0015] S1, placing the to-be-processed tray plate on the surface of the lower forming die and positioning the to-be-processed tray plate in the X-axis direction through the two positioning plates;

[0016] S2, moving the two clamping plates to the two adjusting plates on the two sides of the to-be-processed tray plate through the two-way screw rod to abut against the two sides of the to-be-processed tray plate, and positioning the to-be-processed tray plate in the Y-axis direction;

[0017] S3, when the two adjusting plates abut against the two sides of the to-be-processed tray plate, clamping the to-be-processed tray plate on the surface of the to-be-processed tray plate through the clamping electric rod, and completing the position limitation of the to-be-processed tray plate;

[0018] S4, moving the positioning plate downward below the top surface of the lower forming die through the lifting electric rod;

[0019] S5, driving the upper hole forming die to form a rectangular hole on the surface of the to-be-processed tray plate through the three-axis driving unit;

[0020] S6, after the rectangular hole is formed, switching the polishing head to the working position through the switching unit, moving the to-be-processed tray plate upward through the lifting screw, rotating the to-be-processed tray plate by 180° through the electric drive shaft, and then moving the to-be-processed tray plate downward to reset through the lifting screw;

[0021] S7, moving the polishing head to polish the burrs around the rectangular hole groove through the three-axis driving unit.

[0022] Compared with the prior art, the coffee machine tray inner hole processing device and processing technology provided by the application have the following beneficial effects:

[0023] 1. The coffee machine tray inner hole processing device and processing technology, through the cooperation between the upper die for forming the hole, the lower die for forming, the grinding head, the switching unit, the three-axis drive unit, and the auxiliary processing mechanism, can directly grind the burrs on the surface of the tray after the hole forming is completed, without the need for additional grinding equipment for further processing. This not only reduces the time required for tray processing and significantly improves tray processing efficiency, but also effectively reduces equipment costs, which is beneficial to the processing of coffee machine trays.

[0024] 2. The coffee machine tray inner hole processing device and processing technology, through the cooperation between the positioning plate and the adjustment plate, can effectively calibrate the position of the tray to be processed after it is placed on the surface of the forming lower mold, so that the initial processing point calibration accuracy of the tray to be processed is higher.

[0025] 3. The coffee machine tray inner hole processing device and processing technology, through the cooperation between the positioning electric rod and the lifting electric rod, can drive the positioning plate away from the tray to be processed during the processing. In addition, before the clamping plate works, the position of the adjusting plate is adjusted according to the processing position of the rectangular slot hole on the tray to be processed, so that the contact area between the clamping plate and the side of the tray to be processed can be adjusted as needed. This ensures that the setting of the clamping plate and the positioning plate will not interfere with the processing of the rectangular slot hole of the tray, which is conducive to the efficient processing work. Attached Figure Description

[0026] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this invention. For those skilled in the art, other drawings can be obtained based on these drawings.

[0027] Figure 1 This is a schematic diagram of the overall structure (including the tray) provided in an embodiment of the present invention;

[0028] Figure 2 This is a schematic diagram of the three-axis drive unit structure provided in an embodiment of the present invention;

[0029] Figure 3 This is a partial cross-sectional view of the mounting base provided in an embodiment of the present invention;

[0030] Figure 4 Provided for embodiments of the present invention Figure 3 Enlarged structural diagram at point A in the middle;

[0031] Figure 5 This is a schematic diagram of the overall structure (excluding the tray) provided in an embodiment of the present invention;

[0032] Figure 6 Provided for embodiments of the present invention Figure 5 Enlarged structural diagram at point B;

[0033] Figure 7 This is a schematic diagram of the U-shaped frame structure provided in an embodiment of the present invention;

[0034] Figure 8 This is a schematic diagram of the front structure of the rotating plate provided in an embodiment of the present invention;

[0035] Figure 9 This is a schematic diagram of the back structure of the rotating plate provided in an embodiment of the present invention.

[0036] Explanation of reference numerals in the attached figures:

[0037] 1. Workbench; 2. Mounting base; 21. Drive base; 22. Upper die for forming holes; 23. Mounting plate; 24. Grinding head; 25. Lower die for forming; 3. Vertical plate; 4. X-axis screw; 41. Column; 42. Z-axis screw; 43. Horizontal seat; 44. Y-axis screw; 5. Vertical plate; 51. Gear groove; 52. Transmission gear; 53. Switching electric rod; 6. Lifting screw; 61. Lifting block; 62. U-shaped frame; 63. Bidirectional 64. Screw; 65. Extension plate; 66. Electric drive shaft; 67. Rotating plate; 68. Clamping plate; 69. Vertical block; 60. Synchronous gear; 610. Synchronous rack; 611. Clamping electric rod; 71. Back plate; 72. Telescopic sleeve plate; 73. Telescopic plate; 74. Positioning electric rod; 75. Lifting electric rod; 76. U-shaped groove; 77. Adjusting plate; 78. Threaded groove; 79. Adjusting screw; 710. Guide rod. Detailed Implementation

[0038] To enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0039] Example 1: Please refer to Figures 1-9 A coffee machine tray inner hole processing device includes a worktable 1, a three-axis drive unit on the worktable 1, a mounting base 2 on the three-axis drive unit, a drive base 21 mounted on the bottom of the mounting base 2, a hole-forming upper mold 22 mounted on the bottom of the drive base 21, a mounting plate 23 slidably connected to the side of the mounting base 2 in the vertical direction, a grinding head 24 mounted on the bottom of the mounting plate 23, the grinding head 24 being driven by a motor, a switching unit being provided between the drive base 21 and the mounting plate 23, the switching unit being used to switch the hole-forming upper mold 22 to the working position or to switch the grinding head 24 to the working position, a forming lower mold 25 mounted on the worktable 1, and a tray to be processed placed on the surface of the forming lower mold 25.

[0040] It should be noted that the drive base 21 is equipped with a drive unit that drives the upper die 22 to move and form a rectangular hole groove. This mechanism is existing technology and will not be described in detail here.

[0041] It should be further noted that the pallets to be processed can be placed manually or by adding additional robotic arms for loading and unloading. The specific loading and unloading method can be set according to actual needs.

[0042] The workbench 1 is equipped with a vertical plate 3, and an auxiliary processing mechanism is provided on the outside of the vertical plate 3, which is used to clamp and fix the pallet to be processed.

[0043] The specific structure of the three-axis drive unit is described below. The three-axis drive unit includes X-axis slots symmetrically opened on both sides of the top of the worktable 1. An X-axis screw 4 is installed on the inner side of the X-axis slot. A column 41 is threaded to the outside of the X-axis screw 4. A Z-axis slot is opened on the surface of the opposing side of the two columns 41. A Z-axis screw 42 is installed inside the Z-axis slot. A cross seat 43 is threaded to the outside of the Z-axis screw 42. A Y-axis slot is opened at the bottom of the cross seat 43. A Y-axis screw 44 is installed on the inner side of the Y-axis slot. The X-axis screw 4, Z-axis screw 42 and Y-axis screw 44 are all driven by a motor.

[0044] It should be added that the column 41 is slidably connected to the inner side of the X-axis groove, the horizontal seat 43 is slidably connected to the inner side of the Z-axis groove, the mounting seat 2 is slidably connected to the inner side of the Y-axis groove, and the mounting seat 2 is threaded to the outside of the Y-axis screw 44.

[0045] The specific structure of the switching unit is described below. The switching unit includes a vertical groove at the bottom of the mounting base 2. A vertical plate 5 is mounted on the top of the drive base 21 and is slidably connected to the inner side of the vertical groove. The vertical plate 5 and the mounting plate 23 are provided with toothed grooves 51 on their opposite sides. A gear groove is provided inside the mounting base 2. A transmission gear 52 corresponding to the toothed groove 51 is rotatably connected to the inner side of the gear groove. The vertical plate 5 and the mounting plate 23 are respectively engaged on both sides of the transmission gear 52 through the toothed grooves 51. A switching electric rod 53 is mounted on the top of the mounting base 2. The top of the telescopic end of the switching electric rod 53 is fixedly connected to the mounting plate 23.

[0046] The specific structure of the auxiliary processing mechanism is described below. The auxiliary processing mechanism includes a lifting screw 6 installed on the surface of the vertical plate 3. The lifting screw 6 is externally threaded to a lifting block 61. The surface of the vertical plate 3 is provided with a lifting groove that matches the lifting block 61. The lifting block 61 is slidably connected to the inner side of the lifting groove. A U-shaped frame 62 is installed at the end of the lifting block 61. The U-shaped frame 62 is slidably connected to the surface of the vertical plate 3. A bidirectional screw 63 is installed on the inner side of the U-shaped frame 62. Extension plates 64 are symmetrically threaded to both sides of the bidirectional screw 63. Electric drive shafts 65 are installed on the surfaces of both extension plates 64. Rotating plates 66 are fixedly connected to the opposite ends of both electric drive shafts 65. Clamping plates 67 are symmetrically slidably connected to the surface of the rotating plates 66 in the vertical direction. The lifting screw 6, the bidirectional screw 63, and the electric drive shafts 65 are all driven by a motor.

[0047] Furthermore, vertical grooves are symmetrically provided on both sides of the surface of the rotating plate 66, and vertical blocks 68 that are slidably connected to the inner wall of the vertical grooves are installed at both ends of the clamping plate 67. A synchronous gear 69 is rotatably connected to the surface of the rotating plate 66, and a synchronous rack 610 is provided on each of the two vertical blocks 68 located on the two clamping plates 67. The synchronous racks 610 on both sides are respectively engaged with the two sides of the synchronous gear 69. A clamping electric rod 611 is installed on the surface of the rotating plate 66, and the telescopic end of the clamping electric rod 611 is fixedly connected to one of the synchronous racks 610.

[0048] During the processing, the pallet to be processed is first placed on the surface of the lower forming mold 25. Then, the two extension plates 64 on both sides are driven to move closer to each other by the bidirectional screw 63. When the extension plates 64 move, they drive the clamping plates 67 to move. When the clamping plates 67 move to the appropriate position, the bidirectional screw 63 stops driving. At this time, the clamping electric rod 611 drives one of the synchronous racks 610 to move. Under the transmission action of the synchronous gear 69, the two synchronous racks 610 move closer to each other. When the synchronous racks 610 move, they drive the upper and lower clamping plates 67 to move closer to each other and tightly clamp the upper and lower ends of the pallet to be processed, so that the pallet to be processed can always maintain a stable state.

[0049] Subsequently, the lower forming die 25 is driven to move to the working starting point by the X-axis screw 4, Y-axis screw 44 and Z-axis screw 42. Under the combined drive of the X-axis screw 4, Y-axis screw 44 and Z-axis screw 42, the upper forming die 22 continuously adjusts its position to perform rectangular hole and groove forming. After the rectangular hole and groove are processed, the U-shaped frame 62 is driven to move upward by the lifting screw 6, so that the clamping plate 67 moves synchronously and drives the pallet to be processed to move upward. When it moves to the set position, the clamping plate 67 is driven to rotate 180° by the electric drive shaft 65, so that the bottom surface of the pallet to be processed is flipped to the top. Then, the pallet to be processed is driven to move downward to the surface of the lower forming die 25 by the lifting screw 6 again.

[0050] After the pallet to be processed is flipped over, the mounting plate 23 is driven to move downward by switching the electric rod 53. With the cooperation of the transmission gear 52 and the tooth groove 51, the vertical plate 5 moves upward and drives the upper die 22 to move upward, so that the position of the grinding head 24 is lower than the bottom position of the upper die 22. Then, the grinding head 24 is driven to move continuously by the X-axis screw 4, Y-axis screw 44 and Z-axis screw 42 to grind the burrs around the formed rectangular hole groove.

[0051] Example 2: Please refer to Figures 1-6 , Figures 8-9 This embodiment provides a technical solution based on the above embodiments: A back plate 7 is symmetrically installed on the surface of the workbench 1 on both sides of the lower forming mold 25. A telescopic sleeve 71 is slidably connected to the surface of the back plate 7 in the vertical direction. A telescopic plate 72 is slidably connected to the inner side of the telescopic sleeve 71. A positioning plate 73 is fixedly connected to the end of the telescopic plate 72. A positioning electric rod 74 is installed on the bottom surface of the telescopic sleeve 71. The telescopic end of the positioning electric rod 74 is fixedly connected to the telescopic plate 72. A lifting electric rod 75 is installed on the surface of the back plate 7. The top of the telescopic end of the lifting electric rod 75 is fixedly connected to the telescopic sleeve 71.

[0052] It should be added that the surface of the clamping plate 67 is provided with a U-shaped groove 76, and an adjusting plate 77 is slidably connected to the inner side of the U-shaped groove 76. The surface of the rotating plate 66 is provided with a threaded groove 78, and an adjusting screw 79 is threadedly connected to the inner side of the threaded groove 78. The end of the adjusting screw 79 is rotatably connected to the adjusting plate 77. Guide rods 710 are symmetrically fixedly connected to both sides of the surface of the adjusting plate 77. The guide rods 710 pass through the surface of the rotating plate 66 and are slidably connected to its inner wall.

[0053] Before processing, the operator drives the telescopic sleeve 71 to move vertically using the lifting electric rod 75 according to the actual size of the pallet, so that the position height of the positioning plate 73 meets the positioning requirements. Then, the positioning electric rod 74 drives the two positioning plates 73 to move, so that the distance between them meets the X-axis positioning requirements of the pallet. After that, the operator rotates the adjusting screw 79 to drive the adjusting plate 77 to move, so that the position of the adjusting plate 77 can be adjusted according to the blank distance on the end of the pallet surface, so that the adjusting plate 77 can limit the clamping depth of the clamping plate 67.

[0054] Example 3: This example provides a coffee machine tray inner hole machining process based on the above examples, using the aforementioned coffee machine tray inner hole machining device, including the following steps:

[0055] S1. Place the pallet to be processed on the surface of the lower forming mold 25 and position it in the X-axis by the positioning plates 73 on both sides.

[0056] S2. Drive the two-way screw 63 to move the two-side clamping plates 67 to the two-side adjusting plates 77 to abut against the two sides of the pallet to be processed, and position the pallet to be processed along the Y axis.

[0057] S3. When the two adjustment plates 77 abut against the two sides of the pallet to be processed, the clamping electric rod 611 drives the clamping plate 67 to clamp the surface of the pallet to be processed, thus completing the position restriction of the pallet to be processed.

[0058] S4. Drive the positioning plate 73 downward to below the top surface of the forming lower mold 25 by the lifting electric rod 75.

[0059] S5. The upper die 22 for forming a hole is driven by the three-axis drive unit to form a rectangular hole on the surface of the pallet to be processed.

[0060] S6. After the rectangular hole is formed, the grinding head 24 is switched to the working position by the switching unit, and the processing plate is driven to move upward by the lifting screw 6. Then, the processing plate is driven to rotate 180° by the electric drive shaft 65, and then the processing plate is driven to move downward to reset by the lifting screw 6.

[0061] S7. The grinding head 24 is moved by the three-axis drive unit to grind the burrs on the periphery of the rectangular hole groove.

[0062] The foregoing has only described certain exemplary embodiments of the present invention by way of illustration. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the foregoing drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A coffee machine tray inner hole processing device, comprising a worktable (1), characterized in that, A three-axis drive unit is provided on the worktable (1), and a mounting base (2) is provided on the three-axis drive unit. A drive base (21) is installed at the bottom of the mounting base (2), and a hole-forming upper die (22) is installed at the bottom of the drive base (21). A mounting plate (23) is slidably connected to the side of the mounting base (2) in the vertical direction. A grinding head (24) is installed at the bottom of the mounting plate (23). A switching unit is provided between the drive base (21) and the mounting plate (23). The switching unit is used to switch the hole-forming upper die (22) to the working position or to switch the grinding head (24) to the working position. A forming lower die (25) is installed on the worktable (1), and a processing tray is placed on the surface of the forming lower die (25). The workbench (1) is provided with a vertical plate (3), and an auxiliary processing mechanism is provided on the outside of the vertical plate (3) for clamping and fixing the pallet to be processed.

2. The coffee machine tray inner hole processing device according to claim 1, characterized in that, The three-axis drive unit includes X-axis slots symmetrically opened on both sides of the top of the worktable (1). An X-axis screw (4) is installed on the inner side of the X-axis slot. A column (41) is threaded to the outer side of the X-axis screw (4). A Z-axis slot is opened on the opposite side surface of the two columns (41). A Z-axis screw (42) is installed inside the Z-axis slot. A cross seat (43) is threaded to the outer side of the Z-axis screw (42). A Y-axis slot is opened at the bottom of the cross seat (43). A Y-axis screw (44) is installed on the inner side of the Y-axis slot.

3. The coffee machine tray inner hole processing device according to claim 2, characterized in that, The column (41) is slidably connected to the inner side of the X-axis groove, the cross seat (43) is slidably connected to the inner side of the Z-axis groove, the mounting seat (2) is slidably connected to the inner side of the Y-axis groove, and the mounting seat (2) is threaded to the outside of the Y-axis screw (44).

4. The coffee machine tray inner hole processing device according to claim 3, characterized in that, The switching unit includes a vertical groove at the bottom of the mounting base (2). A vertical plate (5) is slidably connected to the inner side of the vertical groove on the top of the drive base (21). The vertical plate (5) and the mounting plate (23) are provided with toothed grooves (51) on opposite sides. A gear groove is provided inside the mounting base (2). A transmission gear (52) corresponding to the toothed groove (51) is rotatably connected to the inner side of the gear groove. The vertical plate (5) and the mounting plate (23) are respectively meshed on both sides of the transmission gear (52) through the toothed grooves (51). A switching electric rod (53) is installed on the top of the mounting base (2). The top of the telescopic end of the switching electric rod (53) is fixedly connected to the mounting plate (23).

5. The coffee machine tray inner hole processing device according to claim 4, characterized in that, The auxiliary processing mechanism includes a lifting screw (6) installed on the surface of the vertical plate (3). The lifting screw (6) is externally threaded with a lifting block (61). The surface of the vertical plate (3) is provided with a lifting groove that matches the lifting block (61). The lifting block (61) is slidably connected to the inner side of the lifting groove. A U-shaped frame (62) is installed at the end of the lifting block (61). The U-shaped frame (62) is slidably connected to the surface of the vertical plate (3). A bidirectional screw (63) is installed on the inner side of the U-shaped frame (62). Extension plates (64) are symmetrically threaded on both sides of the bidirectional screw (63). Electric drive shafts (65) are installed on the surfaces of both sides of the extension plates (64). Rotating plates (66) are fixedly connected to the opposite ends of both sides of the electric drive shafts (65). Clamping plates (67) are symmetrically slidably connected to the surface of the rotating plates (66) in the vertical direction.

6. The coffee machine tray inner hole processing device according to claim 5, characterized in that, The rotating plate (66) has vertical grooves symmetrically opened on both sides of its surface. Both ends of the clamping plate (67) are equipped with vertical blocks (68) that are slidably connected to the inner wall of the vertical groove. The rotating plate (66) is rotatably connected with a synchronous gear (69). Both vertical blocks (68) on the two clamping plates (67) are provided with synchronous racks (610). The synchronous racks (610) on both sides are respectively meshed with the synchronous gears (69). The rotating plate (66) is equipped with a clamping electric rod (611). The telescopic end of the clamping electric rod (611) is fixedly connected to one of the synchronous racks (610).

7. The coffee machine tray inner hole processing device according to claim 6, characterized in that, The workbench (1) is symmetrically equipped with back plates (7) on both sides of the lower forming mold (25). The back plate (7) is slidably connected to a telescopic sleeve plate (71) in the vertical direction. The inner side of the telescopic sleeve plate (71) is slidably connected to a telescopic plate (72). The end of the telescopic plate (72) is fixedly connected to a positioning plate (73). The bottom surface of the telescopic sleeve plate (71) is equipped with a positioning electric rod (74). The telescopic end of the positioning electric rod (74) is fixedly connected to the telescopic plate (72). The back plate (7) is equipped with a lifting electric rod (75). The top of the telescopic end of the lifting electric rod (75) is fixedly connected to the telescopic sleeve plate (71).

8. The coffee machine tray inner hole processing device according to claim 7, characterized in that, The surface of the clamping plate (67) is provided with a U-shaped groove (76), and an adjusting plate (77) is slidably connected to the inner side of the U-shaped groove (76). The surface of the rotating plate (66) is provided with a threaded groove (78), and an adjusting screw (79) is threadedly connected to the inner side of the threaded groove (78). The end of the adjusting screw (79) is rotatably connected to the adjusting plate (77). Guide rods (710) are symmetrically fixedly connected to both sides of the surface of the adjusting plate (77). The guide rods (710) penetrate the surface of the rotating plate (66) and are slidably connected to its inner wall.

9. A process for machining the inner hole of a coffee machine tray, employing the coffee machine tray inner hole machining apparatus as described in any one of claims 1-8, characterized in that, Includes the following steps: S1. Place the pallet to be processed on the surface of the forming lower mold (25) and position it in the X-axis by means of the positioning plates (73) on both sides; S2. Drive the two side clamps (67) to move to the two side adjustment plates (77) and abut against the two sides of the pallet to be processed by the double screw (63) to position the pallet to be processed along the Y axis. S3. When the two adjustment plates (77) abut against the two sides of the pallet to be processed, the clamping plate (67) is driven by the clamping electric rod (611) to clamp the pallet to be processed, thus completing the position restriction of the pallet to be processed. S4. Drive the positioning plate (73) downward to below the top surface of the forming lower mold (25) by lifting electric rod (75); S5. The upper die (22) is driven by the three-axis drive unit to form a rectangular hole on the surface of the pallet to be processed; S6. After the rectangular hole is formed, the grinding head (24) is switched to the working position by the switching unit, and the processing plate is driven to move upward by the lifting screw (6). Then, the processing plate is driven to rotate 180° by the electric drive shaft (65), and then the processing plate is driven to move downward to reset by the lifting screw (6). S7. The grinding head (24) is moved by the three-axis drive unit to grind the burrs on the periphery of the rectangular hole groove.

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