Device and method for rotationally pressing workpiece and machining equipment

Abstract

The invention provides a device and method for rotationally pressing a workpiece and machining equipment, and relates to the technical field of workpiece pressing, the device comprises a power unit, a pressing unit, a device shell, a rotary supporting rod, a pushing block, a bearing connecting shaft, a first bearing and an elastic element, the pushing block is pushed to move through the power unit, the first bearing rolls in a bearing spiral groove, and therefore the first bearing rotates in the bearing spiral groove; a corresponding workpiece can be installed in the ascending process of the rotary supporting rod, when the rotary supporting rod descends, the workpiece can be pressed under the action of the elastic element, synchronous rotation of a traditional rotary air cylinder and the product workpiece is avoided, winding of an air pipe, a cable and the like is avoided, and the production efficiency is improved. And the device is compact in structural design and small in occupied space, space use is saved, and the technical problems that due to the fact that an existing rotating air cylinder is large in size, occupied space is large, pipeline winding is likely to happen, and danger occurs are solved.

Description

Technical Field

[0001] The present invention relates to the technical field of workpiece pressing, and particularly relates to a device, a method and a processing equipment for rotationally pressing a workpiece. Background Art

[0002] In the automation industry, the application of turntable equipment is particularly common. During the use of turntable equipment, due to work requirements, the product or workpiece to be processed is not directly fixed on the workbench. The product or workpiece to be processed is only placed on the workbench, and then the pressing plate is used to press the product or workpiece according to requirements to prevent the product or workpiece from being thrown out during the rotation of the turntable, so as to safely carry out the next step of processing. In the existing processing environment, a rotary clamping cylinder is mostly used to press the product or workpiece. However, during the rotation process, the rotary cylinder will rotate around the turntable synchronously with the product workpiece. Since the rotary cylinder has a large volume and a complex structure, and compared with an ordinary piston rod cylinder, the cost of the rotary cylinder is higher. Especially, there are key components such as inlet and outlet air pipes and magnetic switch cables connected to the rotary cylinder, which are extremely likely to cause entanglement of the cables or air pipes, leading to danger, and are also likely to cause malfunctions to other component devices during the work process. In addition, the space during the work process is very limited, and the large volume of the rotary cylinder cannot well save the space usage. Summary of the Invention

[0003] Therefore, the technical problem to be solved by the present invention is to overcome the defects in the prior art, so as to provide a device, a method and a processing equipment for rotationally pressing a workpiece.

[0004] A device for rotationally pressing a workpiece includes: a power unit and a pressing unit. The device further includes a device housing. A rotary support rod is slidably arranged in the device housing. One end of the rotary support rod is connected to the pressing unit, and a push block is rotatably arranged at the other end of the rotary support rod. The push block is slidably arranged in the device housing. A bearing connecting shaft is arranged on the rotary support rod, and first bearings are arranged at both ends of the bearing connecting shaft. Bearing spiral grooves corresponding to the first bearings are formed on the device housing, and the first bearings are arranged in the bearing spiral grooves. An elastic element is further arranged on the rotary support rod, and an elastic element limiting groove is formed on the inner wall of the device housing. The elastic element is located between the bearing connecting shaft and the elastic element limiting groove. The power output end of the power unit contacts the push block, and the pressing end of the pressing unit is correspondingly arranged with the workpiece.

[0005] Further, a rotary block is arranged at one end of the rotary support rod close to the push block. The device further includes a second bearing, the inner ring of which is connected to the rotary block, and the outer ring of which is connected to the push block.

[0006] Further, the device further includes a bearing limit block, which is arranged on the bearing connecting shaft. One end of the bearing limit block contacts the first bearing, and the other end of the bearing limit block contacts the rotating support rod.

[0007] Further, an elastic element limit block is arranged on the bearing limit block. The elastic element is a spring. One end of the spring contacts the elastic element limit block, and the other end of the spring is located in the elastic element limit groove.

[0008] Further, the pressing unit is a pressing arm, and the pressing arm is connected to the rotating support rod.

[0009] Further, the power unit is a cylinder. A cylinder pushing block is arranged at the power output end of the cylinder, and the cylinder pushing block contacts the pushing block.

[0010] Further, the device further includes a pressing ring. A workpiece connecting piece is arranged on the pressing ring. The pressing ring is connected to the workpiece through the workpiece connecting piece. The pressing end of the pressing arm contacts the pressing ring.

[0011] Further, clamping grooves are formed at both ends of the bearing connecting shaft, and shaft clamps are arranged on the clamping grooves.

[0012] The present invention further includes a method for rotating and pressing a workpiece. The method is realized based on the device for rotating and pressing a workpiece described in any one of the above. The power unit is started. The power output end of the power unit pushes the pushing block to move upward. At the same time, the first bearing rolls in the bearing spiral groove, thereby driving the rotating support rod to rotate and rise. Under the action of the rotation and rise of the rotating support rod, the pressing unit also rotates and rises, and the elastic element is compressed to store energy. At this time, the workpiece is installed. Then, the power output end of the power unit retracts, and the pushing block moves downward. At the same time, under the action of the elastic element releasing energy, the first bearing rolls in the bearing spiral groove, thereby driving the rotating support rod to rotate and descend. Under the action of the rotation and descent of the rotating support rod, the pressing unit also rotates and descends to press the workpiece.

[0013] The present invention further includes a processing device for rotating and pressing a workpiece. The processing device includes the device for rotating and pressing a workpiece described in any one of the above. The processing device further includes a workpiece placement table, a working turntable, and a driving motor. The power output end of the driving motor is connected to the working turntable. The workpiece placement table is arranged on the working turntable. The workpiece is arranged on the workpiece placement table. The device housing is installed on the working turntable. The pressing end of the pressing unit is arranged corresponding to the workpiece.

[0014] The technical solution of the present invention has the following advantages: In the technical solution provided by the present invention, the power unit drives the pushing block to move. The first bearing rolls in the bearing spiral groove, thereby driving the rotating support rod to rotate and rise. The pressing unit also rotates and rises, leaving space for installing the workpiece. Then, the power output end of the power unit retracts, the pushing block moves downward, and at the same time, under the action of the elastic element releasing energy, the first bearing rolls in the bearing spiral groove, thereby driving the rotating support rod to rotate and descend. The pressing unit also rotates and descends to press the workpiece, avoiding the synchronous rotation of the traditional rotary cylinder and the product workpiece, preventing the entanglement of air pipes and cables, etc., avoiding danger, and at the same time, the device has a compact structure design, small floor space, and saves space usage. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings required for the description of the specific embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0016] Figure 1 It is a schematic structural diagram of the present invention when the workpiece is not pressed; Figure 2 It is a schematic structural diagram of the present invention when the workpiece is pressed; Figure 3 It is a cross-sectional view of the internal structure of the device housing of the present invention; Figure 4 It is a cross-sectional view of the cylinder push block and the cylinder of the present invention; Figure 5 It is a schematic structural diagram of a processing device for rotating and pressing a workpiece according to the present invention; Figure 6 It is a schematic structural diagram of the workpiece placement table and the drive motor of the present invention; Figure 7 It is a schematic structural diagram of the workpiece connecting member of the present invention.

[0017] Explanation of the reference numerals: 1 - pressing arm; 2 - workpiece connecting member; 3 - first bearing; 4 - pushing block; 5 - cylinder push block; 6 - cylinder; 7 - bearing connecting shaft; 8 - shaft clamp; 9 - second bearing; 10 - rotating block; 11 - rotating support rod; 12 - spring; 13 - bearing limit block; 14 - elastic element limit block; 15 - workpiece; 16 - pressing ring; 17 - device housing; 18 - workpiece placement table; 19 - working turntable; 20 - drive motor. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0018] The technical solution of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0019] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention. In addition, the terms "first", "second", "third" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0020] In the description of the present invention, it should be noted that unless otherwise clearly specified and defined, the terms "installation", "connection", "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0021] In addition, the technical features involved in different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0022] As Figures 1 to 3 shown, a device for rotating and pressing a workpiece includes: a power unit and a pressing unit. The device further includes a device housing 17. A rotating support rod 11 is slidably arranged inside the device housing 17. One end of the rotating support rod 11 is connected to the pressing unit, and a pushing block 4 is rotatably arranged at the other end of the rotating support rod 11. The pushing block 4 is slidably arranged inside the device housing 17. A bearing connecting shaft 7 is vertically arranged on the rotating support rod 11. First bearings 3 are arranged at both ends of the bearing connecting shaft 7. The device housing 17 is provided with bearing spiral grooves corresponding to the first bearings 3, and the first bearings 3 are arranged in the bearing spiral grooves. An elastic element is further arranged on the rotating support rod 11. An elastic element limiting groove is provided on the inner wall of the device housing 17. The elastic element is located between the bearing connecting shaft 7 and the elastic element limiting groove. The power output end of the power unit contacts the pushing block 4, and the pressing end of the pressing unit is correspondingly arranged with the workpiece 15.

[0023] The above device for rotating and pressing a workpiece drives the pushing block 4 to move through a power unit. The first bearing 3 rolls in the bearing spiral groove, driving the rotating support rod 11 to rotate and rise. The pressing unit also rotates and rises, leaving space for installing the workpiece 15. Then, the power output end of the power unit retracts, and the pushing block 4 moves downward. At the same time, under the action of the elastic element releasing energy, the first bearing 3 rolls in the bearing spiral groove, driving the rotating support rod 11 to rotate and descend. The pressing unit also rotates and descends to press the workpiece 15, avoiding the synchronous rotation of the traditional rotating cylinder and the product workpiece, preventing the winding of air pipes and cables, etc., avoiding danger. At the same time, the device has a compact structure design, small floor space, and saves space usage.

[0024] As Figures 1 to 3 shown, in this embodiment, a rotating block 10 is provided at one end of the rotating support rod 11 close to the pushing block 4. The device further includes a second bearing 9. The inner ring of the second bearing 9 is connected to the rotating block 10, and the outer ring of the second bearing 9 is connected to the pushing block 4. The rotating block 10 has a convex-shaped structure, and the connection between the rotating block 10 and the rotating support rod 11 is a fixed connection. The convex-shaped rotating block 10 can ensure that it has a limit card for installing the second bearing 9, limiting the displacement of the second bearing 9. At the same time, the outer ring of the second bearing 9 is connected to the pushing block 4, ensuring that during the rotation and rise or fall of the rotating support rod 11, the rotating block 10 will rotate accordingly, but the pushing block 4 will not rotate. The pushing block 4 contacts the power unit below to achieve power transmission, and the contact between the pushing block 4 and the power unit can be disengaged, further preventing the winding of air pipes and cables, etc. in the device for rotating and pressing a workpiece of the present invention, avoiding danger. Compared with the traditional rotating cylinder, it prevents the air pipes and cables, etc. from rotating with the rotation of the turntable or the product. In addition, a gasket is provided on the pushing block 4. The gasket is connected to the pushing block 4 by screws. The setting of the gasket also axially limits the second bearing 9 to prevent the displacement of the second bearing 9. It should be noted that after the power unit is disengaged from the pushing block 4, due to the connection relationships among the pushing block 4, the second bearing 9, the rotating block 10, and the rotating support rod 11, and the first bearing 3 is also in the bearing spiral groove, it also provides a limit for the pushing block 4 to prevent the pushing block 4 from falling off after the power unit is disengaged from the pushing block 4.

[0025] As Figures 1 to 3As shown, in this embodiment, the device further includes a bearing limit block 13. The bearing limit block 13 is arranged on the bearing connecting shaft 7. One end of the bearing limit block 13 contacts the first bearing 3, and the other end of the bearing limit block 13 contacts the rotating support rod 11. The rotating support rod 11 is perpendicular to the bearing connecting shaft 7. By setting the bearing limit block 13, the position of the first bearing 3 is restricted, so that the first bearing 3 is located in the bearing spiral groove. Card slots are provided at both ends of the bearing connecting shaft 7, and shaft clamps 8 are arranged on the card slots. The shaft clamps 8 further limit the first bearing 3 to restrict the displacement of the first bearing 3 and ensure that the first bearing 3 rolls more smoothly in the bearing spiral groove.

[0026] As Figure 1 , Figure 2 and Figure 3 shown, in this embodiment, an elastic element limit block 14 is arranged on the bearing limit block 13. The elastic element is a spring 12. One end of the spring 12 contacts the elastic element limit block 14, and the other end of the spring 12 is located in the elastic element limit groove. During the process of the rotating support rod 11 rotating and rising, the spring 12 is compressed to store energy. During the process of the rotating support rod 11 rotating and descending, the spring 12 releases the stored energy, so that the pressing unit presses the workpiece 15. The settings of the elastic element limit block 14 and the elastic element limit groove will limit the displacement of the spring 12 to ensure the operation of the device. A ball bushing is arranged on the rotating support rod 11 above the spring 12, and there are balls on the bushing. When relative movement occurs between the rotating support rod 11 and the inner wall of the device housing 17, the balls roll, which can effectively reduce friction and wear. Since the ball bushing is a prior art, its structural principle will not be elaborated here.

[0027] As Figure 1 , Figure 2 , Figure 3 and Figure 7 shown, in this embodiment, the pressing unit is a pressing arm 1. The pressing arm 1 is connected to the rotating support rod 11. The pressing arm 1 is mainly used to press the workpiece 15. The device further includes a pressing ring 16. A workpiece connecting member 2 is arranged on the pressing ring 16. The pressing ring 16 is connected to the workpiece 15 through the workpiece connecting member 2. The pressing end of the pressing arm 1 contacts the pressing ring 16. A plurality of workpiece connecting members 2 are arranged on the pressing ring 16 and are connected to the workpiece 15 through the workpiece connecting members 2 and the holes provided thereon. At the same time, in order to improve the connection strength and meet other requirements, a plurality of pin pieces are also arranged on the pressing ring 16. The pin pieces cooperate with the workpiece 15 to be processed to realize the limit during the rotation process. The pressing end of the pressing ring 16 and the pressing arm 1 have the same shape, both being circular structures, to ensure the stability of pressing.

[0028] As Figures 1 to 5As shown, in this embodiment, the power unit is a cylinder 6. A cylinder pushing block 5 is provided at the power output end of the cylinder 6, and the cylinder pushing block 5 contacts the pushing block 4. The cylinder 6 is specifically an ordinary piston rod cylinder. This type of cylinder has a lower cost compared to the rotary clamping cylinder in the prior art. Especially in the actual production process, cost control is very important. Using the piston rod cylinder can effectively reduce production costs, and at the same time, the risk of entanglement of air pipes and cables can be avoided. At the same time, by setting the cylinder pushing block 5, the power output end of the cylinder 6 drives the cylinder pushing block 5 to move, and then pushes the pushing block 4, avoiding the direct contact between the power output end of the cylinder 6 and the pushing block 4. Such a design can ensure that the movement process of the pushing block 4 is more stable, and the rotating support rod 11 rises or falls smoothly.

[0029] As Figures 1 to 5 shown, the present invention further includes a method for rotating and pressing a workpiece. This method is implemented based on the device for rotating and pressing a workpiece described in any one of the above. Start the power unit. The power output end of the power unit pushes the pushing block 4 to move upward. At the same time, the first bearing 3 rolls in the bearing spiral groove, thereby driving the rotating support rod 11 to rotate and rise. Under the action of the rotation and rise of the rotating support rod 11, the pressing unit also rotates and rises, and the elastic element is compressed to store energy. At this time, the workpiece 15 is installed. Then, the power output end of the power unit retracts, and the pushing block 4 moves downward. At the same time, under the action of the elastic element releasing energy, the first bearing 3 rolls in the bearing spiral groove, thereby driving the rotating support rod 11 to rotate and fall. Under the action of the rotation and fall of the rotating support rod 11, the pressing unit also rotates and falls to press the workpiece 15; Specifically, start cylinder 6. The power output end of cylinder 6 drives the cylinder push block 5 to push the push block 4 to move upward. At the same time, the first bearing 3 rolls in the bearing spiral groove, thereby driving the rotating support rod 11 to rotate and rise. Under the action of the rotation and rise of the rotating support rod 11, the pressure arm 1 also rotates and rises, and the spring 12 is compressed to store energy. At this time, there is enough space to install the workpiece 15. Then, the pressure ring 16 is fitted and connected with the workpiece 15. After that, the power output end of cylinder 6 retracts, and the push block 4 moves downward. At the same time, under the action of the spring 12 releasing energy, the first bearing 3 rolls in the bearing spiral groove, thereby driving the rotating support rod 11 to rotate and descend. Under the action of the rotation and descent of the rotating support rod 11, the pressure arm 1 also rotates and descends to tightly press the pressure ring 16 and the workpiece 15. It should be noted that in actual use, the workpiece 15 will be installed on the corresponding workbench according to the actual situation, the cylinder 6 will be installed on the support frame or the ground according to the actual situation, and the device housing 17 will be installed and fixed at the corresponding work position, so as to fix the position of the entire device and ensure the stable operation of the working process. Among them, according to the structural design of the bearing spiral groove, the rotation angle range of the pressure arm 1 is 0° to 90°. When the pressure arm 1 is at 0°, the pressure arm 1 tightly presses the pressure ring 16 and the workpiece 15. Then the pressure arm 1 gradually rotates and rises. When the pressure arm 1 rotates counterclockwise by 90°, the pressure arm 1 gradually does not tightly press the pressure ring 16 and the workpiece 15. At this time, it is convenient for the staff to take the workpiece 15. And the bearing spiral groove should be finely polished to ensure that the first bearing 3 can roll smoothly on the bearing spiral groove.

[0030] Such as Figures 1 to 6As shown in the figure, the present invention further includes a processing device for rotating and pressing workpieces. The processing device includes a device for rotating and pressing workpieces as described in any one of the above, and the processing device further includes a workpiece placement table 18, a working turntable 19, and a driving motor 20. The power output end of the driving motor 20 is connected to the working turntable 19. The workpiece placement table 18 is arranged on the working turntable 19, the workpiece 15 is arranged on the workpiece placement table 18, the device housing 17 is installed on the working turntable 19, and the pressing end of the pressing unit is arranged corresponding to the workpiece 15. A plurality of devices for rotating and pressing workpieces are arranged on the working turntable 19. The number of the devices for rotating and pressing workpieces can be determined according to processing requirements, but each device is evenly distributed to avoid phenomena such as deviation. The driving motor 20 drives the working turntable 19 to rotate. The workpiece placement table 18 is used to place and install the workpiece 15. An installation groove corresponding to the working turntable 19 is arranged on the device housing 17, and the device housing 17 is fixedly installed on the working turntable 19 through the installation groove. Each cylinder 6 is correspondingly arranged on the bottom ground or the corresponding support frame. When the processing device works, the workpiece 15 is placed on the workpiece placement table 18 according to the above method for rotating and pressing workpieces. Then, the pressing arm 1 presses the workpiece 15, and the driving motor 20 drives the working turntable 19 to rotate, so as to successively process each workpiece 15 one by one, such as related processing operations such as welding and gluing. After processing, still according to the above method for rotating and pressing workpieces, the pressing arm 1 rises, and the staff takes away the processed workpiece 15.

[0031] Obviously, the above embodiments are merely examples for clear illustration and not limitations on the implementation manners. For those of ordinary skill in the art, other different forms of changes or variations can be made based on the above description. It is not necessary and impossible to enumerate all the implementation manners here. The obvious changes or variations derived therefrom still fall within the protection scope of the present invention.

Claims

1. A device for rotating and pressing a workpiece, comprising: A power unit and a pressing unit, characterized in that the device further includes a device housing (17), a rotating support rod (11) is slidably arranged in the device housing (17), one end of the rotating support rod (11) is connected to the pressing unit, a pushing block (4) is rotatably arranged at the other end of the rotating support rod (11), the pushing block (4) is slidably arranged in the device housing (17), a bearing connecting shaft (7) is arranged on the rotating support rod (11), first bearings (3) are arranged at both ends of the bearing connecting shaft (7), a bearing spiral groove corresponding to the first bearing (3) is formed in the device housing (17), the first bearing (3) is arranged in the bearing spiral groove, an elastic element is further arranged on the rotating support rod (11), an elastic element limiting groove is formed in the inner wall of the device housing (17), the elastic element is located between the bearing connecting shaft (7) and the elastic element limiting groove, the power output end of the power unit contacts the pushing block (4), and the pressing end of the pressing unit is correspondingly arranged with the workpiece (15).

2. The device for rotating and pressing a workpiece according to claim 1, wherein A rotating block (10) is arranged at one end of the rotating support rod (11) close to the pushing block (4), the device further includes a second bearing (9), the inner ring of the second bearing (9) is connected to the rotating block (10), and the outer ring of the second bearing (9) is connected to the pushing block (4).

3. The device for rotating and pressing a workpiece according to claim 1, characterized in that, The device further includes a bearing limiting block (13), the bearing limiting block (13) is arranged on the bearing connecting shaft (7), one end of the bearing limiting block (13) contacts the first bearing (3), and the other end of the bearing limiting block (13) contacts the rotating support rod (11).

4. The device for rotating and pressing a workpiece according to claim 3, characterized in that, An elastic element limiting block (14) is arranged on the bearing limiting block (13), the elastic element is a spring (12), one end of the spring (12) contacts the elastic element limiting block (14), and the other end of the spring (12) is located in the elastic element limiting groove.

5. The device for rotating and pressing a workpiece according to claim 1, wherein The pressing unit is a pressing arm (1), and the pressing arm (1) is connected to the rotating support rod (11).

6. The device for rotating and pressing a workpiece according to claim 1, wherein The power unit is a cylinder (6), a cylinder pushing block (5) is arranged at the power output end of the cylinder (6), and the cylinder pushing block (5) contacts the pushing block (4).

7. A device for rotating and pressing a workpiece according to claim 1, characterized in that, The device further includes a pressing ring (16), a workpiece connecting piece (2) is arranged on the pressing ring (16), the pressing ring (16) is connected to the workpiece (15) through the workpiece connecting piece (2), and the pressing end of the pressing arm (1) contacts the pressing ring (16).

8. The device for rotationally pressing a workpiece according to claim 1, characterized in that, Chuck grooves are formed at both ends of the bearing connecting shaft (7), and shaft chucks (8) are arranged on the chuck grooves.

9. A method for rotationally pressing a workpiece, which is implemented based on the device for rotationally pressing a workpiece according to any one of claims 1 to 8, characterized in that, Start the power unit. The power output end of the power unit pushes the pushing block (4) to move upward. At the same time, the first bearing (3) rolls in the bearing spiral groove, thereby driving the rotating support rod (11) to rotate and rise. Under the action of the rotation and rise of the rotating support rod (11), the pressing unit also rotates and rises, and the elastic element is compressed to store energy. At this time, install the workpiece (15). After that, the power output end of the power unit retracts, the pushing block (4) moves downward. At the same time, under the action of the elastic element releasing energy, the first bearing (3) rolls in the bearing spiral groove, thereby driving the rotating support rod (11) to rotate and descend. Under the action of the rotation and descent of the rotating support rod (11), the pressing unit also rotates and descends to press the workpiece (15).

10. A processing device for rotating and pressing a workpiece, the processing device comprising a device for rotating and pressing a workpiece according to any one of claims 1 to 8, characterized in that, The processing equipment further includes a workpiece placement table (18), a working turntable (19) and a driving motor (20). The power output end of the driving motor (20) is connected to the working turntable (19). The workpiece placement table (18) is arranged on the working turntable (19). The workpiece (15) is arranged on the workpiece placement table (18). The device housing (17) is installed on the working turntable (19). The pressing end of the pressing unit is arranged corresponding to the workpiece (15).

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