A protection device for a six-sided top press

Abstract

The present invention relates to the technical field of top pressure equipment, and specifically discloses a protection device for a six-sided top press, including a mounting housing installed outside the six-sided top press. A signal controller, a protection signal wire harness end, and a connection wire harness group are installed on one side of the mounting housing. The signal controller is signal-connected to a detection axial calibration component, a three-item monitoring point debugging mechanism, and a self-locking signal response component through the protection signal wire harness end; according to the diameter of the crack generation area, a drive motor drives a magnetoresistive sensor to adjust its position along the axis of the surrounding regulation bracket, and according to the center point of the crack generation area as the symmetric end point, an extension mechanism is used to adjust the extension length of the magnetoresistive sensor, so that even when the crack is not in the state of the top hammer center plane, the three groups of magnetoresistive sensors can reselect the crack center point to set an equilateral test distance between the three groups of magnetoresistive sensors, ensuring the stability of the magnetic field output end, and thus accurately confirming the damage state of the top hammer.

Description

Technical Field

[0001] The present invention relates to the technical field of top pressure equipment, and particularly to a protection device for a six-sided top press. Background Art

[0002] The six-sided top press equipment mainly applies pressure to the internal center through the driving of hydraulic pistons on the top hammers made of tungsten-cobalt alloy, so as to compress the synthetic material block placed in the center. In this way, it can ensure that the synthetic block receives uniform external loads, and then form a closed ultra-high pressure environment to achieve the effect of pressing into a synthetic object. Since the top hammers will be subjected to the alternating action of tensile, compressive, shear and thermal stresses during the synthesis of diamond, external factors such as fatigue damage, process defects, improper alignment of the top hammers and incorrect placement of the synthetic blocks will all cause crack-like damage to the top hammers. Therefore, in the prior art, magnetoresistive sensors are used to detect cracks on the hammer surface after operation to prevent the internal pressure from leaking out after continuous operation and causing the top hammers to collapse, so as to achieve the purpose of protecting the top hammers. However, the generation of cracks is random. The prior art's processing method of collecting by whole-face comparison cannot perform fixed-point calibration according to the crack surface. Affected by the edge effect, the orientation and length difference of the cracks, it is difficult to accurately determine the damage condition only relying on the magnetic field output signal of a large area, and measurement errors are likely to occur. Therefore, the damage state of the top hammers cannot be accurately determined, and the state that requires shutdown protection cannot be confirmed in time. Summary of the Invention

[0003] In view of the problems in the prior art, the present invention provides a protection device for a six-sided top press. The technical solution adopted by the present invention to solve its technical problems is: a protection device for a six-sided top press, including a mounting housing installed on the outside of the six-sided top press. A signal controller, a protection signal wire harness end, and a connection wire harness group are installed on one side of the mounting housing. The signal controller is signal-connected to a detection axial calibration component, a three-point monitoring point debugging mechanism, and a self-locking signal response component through the protection signal wire harness end. The signal controller is electrically connected to an external power supply through the connection wire harness group. The detection axial calibration component, the three-point monitoring point debugging mechanism, and the self-locking signal response component are all arranged inside the hammer pressing cavity of the six-sided top press. The number of the three-point monitoring point debugging mechanisms is at least three. The detection axial calibration component includes an assembly support, a longitudinal adjustment rail, a visual detection and acquisition part, and a surrounding adjustment bracket. The surrounding adjustment bracket is fixedly connected to the outside of the assembly support. The longitudinal adjustment rail is fixedly connected to the assembly support. The visual detection and acquisition part is slidably connected to the assembly support through the longitudinal adjustment rail. The three-point monitoring point debugging mechanism includes a driving motor, an extension mechanism, a fixed-distance limit slider, and a magnetoresistive sensor. The magnetoresistive sensor is fixedly connected to the output end of the extension mechanism. The driving motor and the fixed-distance limit slider are both fixedly connected to the outer housing of the extension mechanism. The output end of the driving motor and the fixed-distance limit slider are both slidably connected to the surrounding adjustment bracket.

[0004] Preferably, a non-application adjustment rail transverse switching slide rail is arranged on one side of the assembly support. One end of the non-application adjustment rail transverse switching slide rail is fixedly connected to the inside of the hammer pressing cavity of the six-sided top press. The output end of the non-application adjustment rail transverse switching slide rail is fixedly connected to the assembly support.

[0005] Preferably, the self-locking signal response component includes an end point contact piece and a pressure sensor. The end point contact piece is arranged inside the hammer pressing cavity of the six-sided top press. The pressure sensor is fixedly connected to the surrounding adjustment bracket. After the non-application adjustment rail transverse switching slide rail drives the surrounding adjustment bracket to displace laterally to the detection surface, the start signal of the pressure sensor is triggered by the end point contact piece. The signal transmission end of the pressure sensor is signal-connected to the signal controller through the protection signal wire harness end.

[0006] Preferably, the connection wire harness group includes an intermediate signal wire, a power supply wire harness, and a hub. The intermediate signal wire is connected to the signal controller. The power supply wire harness is used for power supply of the detection axial calibration component, the three-point monitoring point debugging mechanism, and the self-locking signal response component to an external power supply terminal. The hub is fixedly connected to one side of the mounting housing. The hub is used for the bundling position of the power supply wire harness.

[0007] Preferably, the surrounding control bracket is provided with a limit sliding groove, one end of the fixed-distance limit slider extends to the inside of the limit sliding groove, and the fixed-distance limit slider is slidably connected to the limit sliding groove.

[0008] Preferably, the output end of the driving motor is fixedly connected with an output shaft transmission part, and one end of the output shaft transmission part extends to the inside of the surrounding control bracket.

[0009] Preferably, the number of the longitudinal control rails and the visual detection and acquisition parts is at least two, and the outer shell of the visual detection and acquisition part is fixedly connected to the transmission end of the longitudinal control rail.

[0010] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0011] 1. By using the detection axial calibration component and the three monitoring point debugging mechanism as the monitoring end of the anvil crack protection, that is, after the top pressing synthesis operation, the signal controller sends a control command to the lateral switching slide rail, so that the lateral switching slide rail drives the visual detection and acquisition part to reach the anvil position. After that, the visual detection and acquisition part is switched to an up-and-down staggered state through the longitudinal control rail to realize the image acquisition of the entire coverage area of the anvil, obtain the crack generation area, and drive the magnetoresistive sensor to adjust its position along the axial direction of the surrounding control bracket according to the area diameter through the driving motor. And according to the center point of the crack generation area as the symmetric end point, the extension length of the magnetoresistive sensor is adjusted through the extension mechanism, so that even when the crack is not in the central plane state of the anvil, the three magnetoresistive sensors can reselect the crack center point and set an equilateral test spacing between the three magnetoresistive sensors to ensure the stability of the magnetic field output end, and then accurately confirm the damage state of the anvil, and use the signal controller to send a protection signal to the six-sided top press, so that the six-sided top press cannot continue to operate without unlocking the protection signal, avoiding continuing to operate without accurately knowing the current damage state and causing the cavity pressure to leak and the anvil to collapse.

[0012] 2. In the non-applied state, the lateral switching slide rail can control the assembly support to be stored outside the top pressing cavity of the six-sided top press, avoiding interfering with the operation path of the top pressing cavity. In the protection detection state, the signal controller needs to control the lateral switching slide rail to drive the assembly support to move laterally until the end point pressure piece reaches the set position of the pressure sensor, triggering the enabling signal of the pressure sensor. At this time, the visual detection and acquisition part and the surrounding control bracket are in an active state, and the signal controller can control the longitudinal control rail, the driving motor and the extension mechanism to perform the calibration and debugging of the crack generation surface. At the same time, the pressure sensor sends a stop and lock signal to the signal controller, that is, when the end point pressure piece triggers the pressure sensor, the six-sided top press cannot continue to operate, avoiding misoperation of the six-sided top press, and thus achieving the purpose of detection and protection. Description of the Drawings

[0013] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0014] Figure 1 Structural schematic of a protection device for a six-sided top press of the present invention Figure 1 。

[0015] Figure 2 Mechanism schematic of a protection device for a six-sided top press of the present invention Figure 2 。

[0016] Figure 3 is Figure 2 an enlarged view of part A in

[0017] Figure 4 Structural composition diagram of a detection axial calibration component and a three-item monitoring point debugging mechanism in a protection device for a six-sided top press of the present invention.

[0018] Figure 5 Three-dimensional schematic diagram of a detection axial calibration component, a three-item monitoring point debugging mechanism and a self-locking signal response component in a protection device for a six-sided top press of the present invention.

[0019] In the figure: 1. Installation housing; 2. Signal controller; 3. Protection signal wire harness end; 4. Connection wire harness group; 41. Intermediate signal wire; 42. Power supply wire harness; 43. Hub; 5. Detection axial calibration component; 51. Assembly support; 52. Longitudinal adjustment rail; 53. Visual detection acquisition part; 54. Surrounding adjustment bracket; 541. Limit sliding groove; 55. Transverse switching slide rail; 6. Three-item monitoring point debugging mechanism; 61. Driving motor; 611. Output shaft transmission part; 62. Extension mechanism; 63. Fixed-distance limit slider; 64. Magnetoresistive sensor; 7. Self-locking signal response component; 71. End point contact piece; 72. Pressure sensor. Specific embodiments

[0020] In order to make the technical means, creative features, achieved purposes and effects of the present invention easy to understand, the present invention will be further described below in conjunction with specific embodiments.

[0021] Such as Figure 1 - Figure 5As shown in the figure, a protection device for a six-sided top press according to the present invention includes an installation housing 1 installed outside the six-sided top press. A signal controller 2, a protection signal wire harness end 3, and a connection wire harness group 4 are installed on one side of the installation housing 1. The signal controller 2 is signal-connected to a detection axial calibration component 5, a three-point monitoring point debugging mechanism 6, and a self-locking signal response component 7 through the protection signal wire harness end 3. The signal controller 2 is electrically connected to an external power supply through the connection wire harness group 4. The detection axial calibration component 5, the three-point monitoring point debugging mechanism 6, and the self-locking signal response component 7 are all arranged inside the hammer pressing cavity of the six-sided top press, and the number of the three-point monitoring point debugging mechanisms 6 is at least three.

[0022] In this embodiment, to solve the problem that the existing processing method of collecting by whole-face comparison cannot perform fixed-point calibration according to the crack surface, and is susceptible to measurement errors due to the influence of edge effects, the orientation and length differences of cracks, the present invention proposes a protection device for a six-sided top press, which solves the above technical problems by setting a detection axial calibration component 5, a three-point monitoring point debugging mechanism 6, and a self-locking signal response component 7.

[0023] In an alternative embodiment of this embodiment, the detection axial calibration component 5 includes an assembly support 51, a longitudinal adjustment rail 52, a visual detection and acquisition part 53, and a surrounding adjustment bracket 54. The surrounding adjustment bracket 54 is fixedly connected to the outside of the assembly support 51. The longitudinal adjustment rail 52 is fixedly connected to the assembly support 51. The visual detection and acquisition part 53 is slidably connected to the assembly support 51 through the longitudinal adjustment rail 52.

[0024] In an alternative embodiment of this embodiment, the number of the longitudinal adjustment rails 52 and the visual detection and acquisition parts 53 is at least two, and the outer housing of the visual detection and acquisition part 53 is fixedly connected to the transmission end of the longitudinal adjustment rail 52.

[0025] In this embodiment, after the top pressing and synthesis operation, the signal controller 2 sends a control command to the transverse switching slide rail 55, so that the transverse switching slide rail 55 drives the visual detection and acquisition part 53 to reach the position of the top hammer, and then the visual detection and acquisition part 53 is switched to an upper and lower staggered state through the longitudinal adjustment rail 52 to realize image acquisition of the entire coverage area of the top hammer. Among them, the visual detection and acquisition part 53 is an existing CCD image acquisition device. The visual detection and acquisition part 53 is connected to a visual detection end. After the visual detection and acquisition part 53 performs image acquisition, the visual detection end analyzes the position and range of crack generation, so that the operator can debug and control the output end position of the magnetoresistive sensor 64 through the signal controller 2 according to the analysis result obtained by the visual detection end. Among them, visual detection is an existing technical means and is not an improvement content of the present invention. And in order to keep the image acquisition of the visual detection and acquisition part 53 stable, the longitudinal adjustment rail 52 can adjust the visual detection and acquisition part 53 to be symmetrically arranged up and down, so that the acquisition surface of the visual detection and acquisition part 53 covers the entire top hammer surface.

[0026] In an alternative embodiment of this embodiment, the three-point monitoring point debugging mechanism 6 includes a driving motor 61, an extension mechanism 62, a fixed-distance limit slider 63, and a magnetoresistive sensor 64. The magnetoresistive sensor 64 is fixedly connected to the output end of the extension mechanism 62. Both the driving motor 61 and the fixed-distance limit slider 63 are fixedly connected to the outer housing of the extension mechanism 62. The output end of the driving motor 61 and the fixed-distance limit slider 63 are both slidably connected to the surrounding adjustment bracket 54.

[0027] In this embodiment, after the visual detection acquisition unit 53 obtains the crack generation area, the operator can control the output point of the magnetoresistive sensor 64 through the signal controller 2 according to the diameter of the image area. The debugging principle is as follows: The driving motor 61 drives the magnetoresistive sensor 64 to adjust its position along the axial direction of the surrounding adjustment bracket 54, and the extension length of the magnetoresistive sensor 64 is adjusted through the extension mechanism 62 with the center point of the crack generation area as the symmetric end point. Even when the crack is not in the state of the center plane of the anvil, the three magnetoresistive sensors 64 can reselect the crack center point to set an equilateral test spacing between the three magnetoresistive sensors 64, ensuring the stability of the magnetic field output end, and then accurately confirming the damage state of the anvil, so as to send a protection signal to the six-sided top press through the signal controller 2, so that the six-sided top press cannot continue to operate without unlocking the protection signal, avoiding continuing to operate without accurately knowing the current damage state and causing the internal pressure to leak and the anvil to collapse.

[0028] In an alternative embodiment of this embodiment, a non-application adjustment rail transverse switching slide rail 55 is provided on one side of the assembly support 51. One end of the non-application adjustment rail transverse switching slide rail 55 is fixedly connected to the inner side of the hammer pressing cavity of the six-sided top press, and the output end of the non-application adjustment rail transverse switching slide rail 55 is fixedly connected to the assembly support 51.

[0029] In this embodiment, in the non-application state, the transverse switching slide rail 55 can control the assembly support 51 to be stored outside the pressing cavity of the six-sided top press, avoiding interfering with the operation path of the pressing cavity. At the same time, when in use, the transverse switching slide rail 55 can send the assembly support 51 into the pressing cavity.

[0030] In this embodiment, the transverse switching slide rail 55 is installed on the frame by a fixed connection method to drive the assembly support 51 to reach the inner side of the pressing cavity of the six-sided top press. The signal controller 2 selects a conventional controller. The signal controller 2 is connected to the longitudinal adjustment rail 52, the visual detection acquisition unit 53, the driving motor 61, the extension mechanism 62, and the magnetoresistive sensor 64 through the protection signal wire harness end 3, and is used to control the activation and driving control of the above structures.

[0031] In this embodiment, the operating principle of the magnetoresistive sensor 64 is that the crack defect affects the distribution of the induced current on the surface of the anvil, that is, the presence of the crack changes the path of the induced current emitted by the magnetoresistive sensor 64, thereby causing a change in the secondary magnetic field. Since this technology is a well-known technical means in the art and is not the improvement content of the present invention, its specific principle will not be described in detail in the present invention.

[0032] In an alternative embodiment of this embodiment, the self-locking signal response assembly 7 includes an end-point contact piece 71 and a pressure sensor 72. The end-point contact piece 71 is arranged inside the hammer pressing cavity of the six-sided top press. The pressure sensor 72 is fixedly connected to the surrounding regulation bracket 54. After the non-application adjustment rail lateral switching slide rail 55 drives the surrounding regulation bracket 54 to displace laterally to the detection surface, the enabling signal of the pressure sensor 72 is triggered by the end-point contact piece 71. The signal transmission end of the pressure sensor 72 is signal-connected to the signal controller 2 through the protection signal wire harness end 3.

[0033] In an alternative embodiment of this embodiment, the connection wire harness group 4 includes an intermediate signal wire 41, a power supply wire harness 42, and a hub 43. The intermediate signal wire 41 is connected to the signal controller 2. The power supply wire harness 42 is used for supplying power to the axial calibration assembly 5, the three-item monitoring point debugging mechanism 6, and the self-locking signal response assembly 7 from an external power supply terminal. The hub 43 is fixedly connected to one side of the installation housing 1, and the hub 43 is used for the bundling position of the power supply wire harness 42.

[0034] In this embodiment, the longitudinal regulation rail 52, the visual detection and acquisition unit 53, and the lateral switching slide rail 55 are all electrically connected to an external power supply through the protection signal wire harness end 3. The drive motor 61, the extension mechanism 62, and the magnetoresistive sensor 64 are electrically connected to an external power supply through the protection signal wire harness end 3. The end-point contact piece 71 and the pressure sensor 72 are electrically connected to an external power supply through the protection signal wire harness end 3. Among them, the hub 43 is used for the centralized binding when the power supply wire harness 42 accesses an external power supply.

[0035] In an alternative embodiment of this embodiment, the surrounding regulation bracket 54 is provided with a limit sliding groove 541. One end of the fixed-distance limit slider 63 extends into the limit sliding groove 541, and the fixed-distance limit slider 63 is slidably connected to the limit sliding groove 541. In an alternative embodiment of this embodiment, the output end of the drive motor 61 is fixedly connected with an output shaft transmission part 611, and one end of the output shaft transmission part 611 extends into the surrounding regulation bracket 54.

[0036] In this embodiment, in order to ensure the stability of the magnetoresistive sensor 64 during debugging while moving along the axis of the surrounding adjustment bracket 54, the present invention arranges a rack in a circular shape on the inner side of the surrounding adjustment bracket 54, and a transmission gear is fixedly connected to one end of the output shaft transmission part 611 extending to the inner side of the surrounding adjustment bracket 54. Through the meshing transmission between the transmission gear arranged at the end of the output shaft transmission part 611 and the rack arranged on the inner side of the surrounding adjustment bracket 54, the debugging of the position of the magnetoresistive sensor 64 is realized. The specific debugging principle is as follows: The driving motor 61 drives the output shaft transmission part 611 to rotate, so that the output shaft transmission part 611 moves along the distribution path of the rack on the inner side of the surrounding adjustment bracket 54 under the action of rotation. After moving to the required position, the driving motor 61 stops driving, and the position of the output end of the magnetoresistive sensor 64 is further adjusted by the extension or contraction of the output end of the extension mechanism 62.

[0037] The working principle of the present invention is as follows: After the six-sided top press completes the pressing operation, protection detection is carried out. First, the signal controller 2 controls the lateral switching slide rail 55 to drive the assembly support 51 to move laterally until the end touch piece 71 reaches the set position of the pressure sensor 72. Then, the assembly support 51 enters the inner side of the pressing cavity and covers the anvil, and at the same time triggers the enabling signal of the pressure sensor 72. At this time, the visual detection acquisition part 53 and the surrounding adjustment bracket 54 are in an active state. Then, the signal controller 2 can control the longitudinal adjustment rail 52, the driving motor 61 and the extension mechanism 62 to carry out the calibration debugging of the crack generation surface. At the same time, the pressure sensor 72 sends a shutdown locking signal to the signal controller 2, that is, when the end touch piece 71 triggers the pressure sensor 72, the six-sided top press cannot continue to operate, avoiding misoperation of the six-sided top press. When starting the debugging operation of the output end of the magnetoresistive sensor 64, the signal controller 2 controls the longitudinal adjustment rail 52 to drive the two visual detection acquisition parts 53 to be in an up-and-down staggered state to realize the image acquisition of the entire coverage surface of the anvil, obtain the crack generation area, and drive the magnetoresistive sensor 64 to adjust its position along the axis of the surrounding adjustment bracket 54 according to the area diameter through the driving motor 61, and adjust the extension length of the magnetoresistive sensor 64 through the extension mechanism 62 with the center point of the crack generation area as the symmetric end point, so that even when the crack is not in the central plane state of the anvil, the three magnetoresistive sensors 64 can reselect the crack center point and set an equilateral test spacing between the three magnetoresistive sensors 64 to ensure the stability of the magnetic field output end, and then accurately confirm the damage state of the anvil, so that the signal controller 2 sends a protection signal to the six-sided top press, making the six-sided top press unable to continue running without unlocking the protection signal, avoiding continuing to run without accurately knowing the current damage state and causing the pressure in the cavity to leak out and the anvil to collapse.

[0038] The basic principles, main features and advantages of the present invention have been shown and described above. Those skilled in the art should understand that the present invention is not limited by the above embodiments. The above embodiments and the descriptions in the specification only illustrate the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and all these changes and improvements fall within the scope of the present invention claimed. The scope of the present invention claimed is defined by the appended claims and their equivalents.

Claims

1. A protective device for a six-sided top press, comprising a mounting housing (1) mounted on the outside of the six-sided top press, characterized in that: A signal controller (2), a protection signal harness end (3), and a connection harness group (4) are installed on one side of the installation shell (1); the signal controller (2) is connected to a detection axial calibration component (5), a three-item monitoring point debugging mechanism (6), and a self-locking signal response component (7) through the signal of the protection signal harness end (3); the signal controller (2) is electrically connected to an external power supply through the connection harness group (4); the detection axial calibration component (5), the three-item monitoring point debugging mechanism (6), and the self-locking signal response component (7) are all arranged on the inner side of the hammer pressure chamber of the six-sided top press; the number of the three-item monitoring point debugging mechanism (6) is at least three; ... The fixed component (5) comprises an assembly bracket (51), a longitudinal regulating rail (52), a visual detection and collection unit (53) and a surrounding regulating bracket (54); the surrounding regulating bracket (54) is fixedly connected to the outer side of the assembly bracket (51); the longitudinal regulating rail (52) is fixedly connected to the assembly bracket (51); the visual detection and collection unit (53) is slidably connected to the assembly bracket (51) through the longitudinal regulating rail (52); the three-item monitoring point debugging mechanism (6) comprises a driving motor (61), an extension mechanism (62), a fixed distance limiting slider (63) and a magnetic resistance sensor (64); the magnetic resistance sensor (64) is fixedly connected to the output end of the extension mechanism (62); The driving motor (61) and the fixed-distance limiting slider (63) are both fixedly connected to the outer shell of the extension mechanism (62); the output end of the driving motor (61) and the fixed-distance limiting slider (63) are both slidably connected to the surrounding regulating bracket (54); the surrounding regulating bracket (54) is provided with a limiting sliding groove (541); one end of the fixed-distance limiting slider (63) extends to the inner side of the limiting sliding groove (541), and the fixed-distance limiting slider (63) is slidably connected to the limiting sliding groove (541); the output end of the driving motor (61) is fixedly connected to an output shaft transmission part (611), and one end of the output shaft transmission part (611) extends to the inner side of the surrounding regulating bracket (54).

2. The protective device for a six-sided top press according to claim 1, characterized in that: A non-application adjustment rail transverse switching slide rail (55) is provided on one side of the assembly bracket (51), one end of the non-application adjustment rail transverse switching slide rail (55) is fixedly connected to the inner side of the hammer pressure chamber of the six-sided top press, and the output end of the non-application adjustment rail transverse switching slide rail (55) is fixedly connected to the assembly bracket (51).

3. The protective device for a six-sided top press according to claim 2, characterized in that: The self-locking signal response component (7) comprises an endpoint contact pressure piece (71) and a pressure sensor (72); the endpoint contact pressure piece (71) is arranged inside the hammer pressure chamber of the six-sided top press; and the pressure sensor (72) is fixedly connected to the surrounding regulating bracket (54).

4. The protective device for a six-sided top press according to claim 3 is characterized in that: After the non-application adjustment rail transverse switching slide rail (55) drives the surrounding adjustment bracket (54) to transversely move to the detection surface, the end point contact pressure sheet (71) triggers the activation signal of the pressure sensor (72), and the signal transmission end of the pressure sensor (72) is connected to the signal controller (2) through the protection signal harness end (3).

5. The protective device for a six-sided top press according to claim 4, characterized in that: The connecting harness group (4) comprises an intermediate signal line (41), a power supply harness (42) and a hub (43); the intermediate signal line (41) is connected to the signal controller (2); the power supply harness (42) is used to supply power to the detection axial calibration component (5), the three-item monitoring point debugging mechanism (6) and the self-locking signal response component (7) and an external power supply terminal.

6. The protective device for a six-sided top press according to claim 5, characterized in that: The hub (43) is fixedly connected to one side of the installation housing (1), and the hub (43) is used for arranging the power supply harness (42).

7. The protective device for a six-sided top press according to claim 6, characterized in that: The number of the longitudinal regulating rail (52) and the visual detection and collection part (53) is at least two, and the outer shell of the visual detection and collection part (53) is fixedly connected to the transmission end of the longitudinal regulating rail (52).

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