A hydraulic press with automatic sensing safety protection device

Abstract

The present invention belongs to the technical field of hydraulic press manufacturing, and provides a hydraulic press with an automatic sensing safety protection device, including a workbench, the workbench is fixedly connected to a support frame, the support frame is fixedly connected to a hydraulic rod, the telescopic end of the hydraulic rod is fixedly connected to a fixed seat, the side walls of the fixed seat are fixedly connected to sliding sleeves, the sliding sleeves are slidably connected to the support frame, both ends of the support frame are sleeved with elastic limit sleeves, the elastic limit sleeves are fixedly connected to the end face of the workbench, the end face of the workbench is provided with a placement groove, and a suction mechanism is provided in the middle of the placement groove. In the present invention, with the cooperation of an air pressure sensor and a pressure sensor, the vertical fracturing and horizontal expansion of the blank can be effectively monitored, thereby improving the protection effect of the hydraulic rod, and avoiding vibration deformation of the hydraulic rod and the fixed seat under the action of the impact force when the blank suddenly breaks.

Description

Technical Field

[0001] The invention belongs to the technical field of hydraulic press manufacturing, and in particular relates to a hydraulic press with an automatic sensing safety protection device. Background Art

[0002] A hydraulic press is a machine that uses the static pressure of liquid to process metal, plastic, rubber, wood, powder and other products. It is often used in pressing and forming processes, such as forging, stamping, cold extrusion, straightening, bending, flanging, sheet metal drawing, powder metallurgy, press fitting, etc. Its principle is to use Pascal's law to make a machine that uses liquid pressure transmission. The uses of hydraulic presses are also varied according to needs. For example, according to the type of liquid that transmits pressure, there are two major categories: oil presses and water presses.

[0003] When the hydraulic press presses down the blank, the blank is constantly squeezed and easily over-pressed and fatigue fracture occurs. When the blank fatigue fractures, it is easy to produce some debris splashing, and at the same time, the dust will spread outward with the instantaneous airflow, causing safety hazards on site and environmental pollution. In addition, the hydraulic press itself loses the bottom support at the moment of the blank breaking and is prone to oscillation, thereby damaging the internal parts. The existing protective device of the hydraulic press usually reduces the vibration of the hydraulic press by setting a vibration reduction structure to avoid the hydraulic press from having a large instantaneous impact force. However, the existing vibration reduction structure cannot provide timely and targeted protection when the blank breaks, and the protection effect is poor. Summary of the invention

[0004] The purpose of the present invention is to provide a hydraulic press with an automatic sensing safety protection device, aiming to solve the technical problem in the prior art that the existing vibration reduction structure cannot provide timely and targeted protection when the blank breaks, and the protection effect is poor.

[0005] The present invention is implemented in this way. A hydraulic press with an automatic sensing safety protection device comprises a workbench, the workbench is fixedly connected to a support frame, the support frame is fixedly connected to a hydraulic rod, the telescopic end of the hydraulic rod is fixedly connected to a fixed seat, the side walls on both sides of the fixed seat are fixedly connected to sliding sleeves, the sliding sleeves are slidably connected to the support frame, both ends of the support frame are sleeved with elastic limiting sleeves, the elastic limiting sleeves are fixedly connected to the end face of the workbench, the end face of the workbench is provided with a placement groove, the placement groove is directly opposite to the fixed seat, a suction mechanism is provided in the middle of the placement groove, and the suction mechanism can adsorb and fix the blank;

[0006] A plurality of positioning mechanisms are arranged in a rectangular shape around the placement slot, and the positioning mechanisms can simultaneously clamp and fix the blank in the placement slot. Each positioning mechanism is provided with a protective mechanism, and the protective mechanism can elastically limit the blank. At the same time, the protective mechanism can be vertically extended and retracted;

[0007] The control system includes: a monitoring module, the monitoring module includes an air pressure sensor and a plurality of pressure sensors, the air pressure sensor is arranged in the suction mechanism, and each positioning mechanism is provided with a pressure sensor at a position facing the middle of the placement slot; a processing module, the processing module is used to compare the pressure values ​​of the air pressure sensor and all the pressure sensors with preset pressure thresholds respectively, and form judgment information; a control module, the control module can control the hydraulic rod, the suction mechanism and the protection mechanism according to the judgment information.

[0008] Further technical solution: the suction mechanism includes a telescopic sleeve, a suction cup and an air pump;

[0009] The telescopic sleeve is fixedly connected to the inner end surface of the placement groove, the telescopic end of the telescopic sleeve is fixedly connected to a suction cup, the bottom surface of the workbench is fixedly connected to an air pump, the air pump is communicated with the suction cup, and an air pressure sensor is arranged in the suction cup.

[0010] Further technical solution: a rubber sleeve is arranged inside the placement groove, the base of the elastic limiting sleeve is filled with hydraulic oil, an oil pipe is connected between the base of the elastic limiting sleeve and the rubber sleeve, and the oil pipe is arranged in a ring around the suction cup.

[0011] Further technical solution: the positioning mechanism includes a guide rail, a positioning seat, a threaded shaft and a motor;

[0012] Guide rails are arranged in a rectangle around the placement slot, a positioning seat is slidably connected to the guide rails, a threaded shaft is rotatably connected to the guide rails, the threaded shaft is threadedly connected to the positioning seat, a motor is fixedly connected to the guide rails, the output shaft of the motor is fixedly connected to one end of the threaded shaft, and a pressure sensor is arranged at the position of each positioning seat facing the middle of the placement slot.

[0013] Further technical solution: The positioning seat is rotatably connected to a push plate at one end close to the placement slot, the push plate is arc-shaped, an elastic torsion spring is rotatably connected between the push plate and the placement slot, and a plurality of triangular limit strips are arranged on the arc surface of the push plate facing the placement slot.

[0014] Further technical solution: the protection mechanism includes a sliding seat, an elastic limiting rod, a fixed baffle and a sliding baffle;

[0015] The sliding seat is slidably connected to the upper end surface of the positioning seat, an elastic limiting rod is fixedly connected between the sliding seat and the positioning seat, a fixed baffle is fixedly connected to one end of the sliding seat close to the placement slot, a sliding baffle is vertically slidably connected in the fixed baffle, a filter is provided on the side of the fixed baffle and the sliding baffle away from the placement slot, the sliding seat is rotatably connected to the electric rod, the sliding baffle is rotatably connected to the elastic push rod, and the elastic push rod is elastically slidably connected to the telescopic end of the electric rod;

[0016] A plurality of strip-shaped blocking seats are arranged at intervals on the end surfaces of the fixed blocking plate and the sliding blocking plate facing the placement groove, and a plurality of through holes are arranged on the end surfaces on both sides of the strip-shaped blocking seats.

[0017] Further technical solution: The upper end of the fixed baffle is horizontally slidably connected with a suction plate.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] 1. With the cooperation of air pressure sensor and pressure sensor, the vertical fracturing and horizontal expansion of the billet can be effectively monitored, thereby improving the protection effect of the hydraulic rod and avoiding vibration deformation of the hydraulic rod and the fixing seat under the impact force when the billet breaks suddenly;

[0020] 2. The air pump extracts the gas in the telescopic sleeve to create a negative pressure environment in the telescopic sleeve, thereby adsorbing and fixing the blank; when the positioning seat moves toward the blank, the push plate abuts against the blank in advance, and under the push of the positioning seat, all the limit strips on the push plate apply a downward thrust to the blank, and the blank is pressed down against the suction cup, thereby increasing the adsorption stability between the blank and the suction cup; when the elastic limit sleeve is subjected to the downward pressure of the sliding sleeve, the oil pipe elastically supports part of the blank area to reduce the vibration force of the blank when it is pressed; at the same time, the oil pipe abuts and seals the surroundings of the suction cup to further increase the sealing between the suction cup and the blank;

[0021] 3. When the air pressure value of the air pressure sensor is lower than the preset pressure threshold, the control module controls the hydraulic rod to stop pressing down, and the control module immediately controls the electric rod to start extending, and the blank is protected by the cooperation of all fixed baffles and sliding baffles to prevent the blank from breaking suddenly and causing the fragments to splash. At the same time, the top of the sliding baffle elastically supports the fixed seat to prevent the fixed seat from losing support when the blank breaks suddenly, and the hydraulic rod and the fixed seat vibrate and deform under the action of the impact force;

[0022] 4. The fixed baffle and the sliding baffle are provided with a plurality of strip baffles at intervals on the end faces of the placement groove. The intervals between the strip baffles can make the blanks accumulate outward when they expand and break. At the same time, each strip baffle can increase the blocking area of ​​the broken materials to prevent the broken materials from splashing outward. The two side faces of the strip baffle are provided with a plurality of through holes. The through holes on the two side faces of the strip baffle can make the airflow generated by the broken blanks diffuse to the surrounding fixed baffles. At the same time, the filter screen on the back of the fixed baffle can collect dust and impurities in the airflow.

[0023] 5. When the blank expands to both sides, the pressure value of the pressure sensor exceeds the preset pressure threshold. At this time, the control module controls the air pump to increase the adsorption force on the blank. At the same time, the control module controls the electric rod to start extending, thereby protecting the blank and preventing the blank from bursting and causing fragments to splash. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0025] Figure 2 It is a structural schematic diagram of the suction mechanism in the present invention.

[0026] Figure 3 It is a schematic diagram of the structure of the elastic limiting sleeve and the rubber sleeve in the present invention.

[0027] Figure 4 It is a connection diagram of the positioning mechanism and the protection mechanism in the present invention.

[0028] Figure 5 It is a structural schematic diagram of the positioning mechanism in the present invention.

[0029] Figure 6 It is a structural schematic diagram of the protection mechanism in the present invention.

[0030] Figure 7 It is a schematic diagram of the structure of the fixed baffle and the sliding baffle in the present invention.

[0031] In the attached figure: 1. workbench; 2. support frame; 3. hydraulic rod; 4. suction mechanism; 41. telescopic sleeve; 42. suction cup; 43. air pump; 5. positioning mechanism; 51. guide rail; 52. positioning seat; 53. threaded shaft; 54. motor; 6. protection mechanism; 61. sliding seat; 62. elastic limit rod; 63. fixed baffle; 64. sliding baffle; 65. filter; 66. electric rod; 67. elastic push rod; 7. push plate; 8. limit strip; 9. suction plate; 10. fixed seat; 11. sliding sleeve; 12. elastic limit sleeve; 13. placement groove; 14. rubber sleeve; 15. oil pipe. DETAILED DESCRIPTION

[0032] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0033] The specific implementation of the present invention is described in detail below in conjunction with specific embodiments.

[0034] like Figure 1-Figure 7As shown, a hydraulic press with an automatic sensing safety protection device provided by the present invention comprises a workbench 1, wherein the workbench 1 is fixedly connected to a support frame 2, wherein the support frame 2 is fixedly connected to a hydraulic rod 3, wherein the telescopic end of the hydraulic rod 3 is fixedly connected to a fixed seat 10, wherein the side walls on both sides of the fixed seat 10 are fixedly connected to sliding sleeves 11, wherein the sliding sleeves 11 are both slidably connected to the support frame 2, wherein both ends of the support frame 2 are sleeved with elastic limiting sleeves 12, wherein the elastic limiting sleeves 12 are fixedly connected to the end face of the workbench 1, wherein the end face of the workbench 1 is provided with a placement groove 13, wherein the placement groove 13 is directly opposite to the fixed seat 10, wherein a suction mechanism 4 is provided in the middle of the placement groove 13, wherein the suction mechanism 4 is capable of adsorbing and fixing the blank;

[0035] A plurality of positioning mechanisms 5 are arranged in a rectangular shape around the placement slot 13. The positioning mechanisms 5 can simultaneously clamp and fix the blank in the placement slot 13. Each positioning mechanism 5 is provided with a protection mechanism 6, which can elastically limit the blank. At the same time, the protection mechanism 6 can be vertically extended;

[0036] The control system includes: a monitoring module, the monitoring module includes an air pressure sensor and a plurality of pressure sensors, the air pressure sensor is arranged in the suction mechanism 4, and each positioning mechanism 5 is provided with a pressure sensor at a position facing the middle of the placement slot 13; a processing module, the processing module is used to compare the pressure values ​​of the air pressure sensor and all pressure sensors with preset pressure thresholds respectively, and form judgment information, the processing module is preferably a computer processor; a control module, the control module can control the hydraulic rod 3, the suction mechanism 4 and the protection mechanism 6 according to the judgment information, and the control module is preferably a PLCK controller.

[0037] In this embodiment, the blank is placed in the placement groove 13, and the suction mechanism 4 fixes the bottom of the blank by suction through negative pressure. At this time, each positioning mechanism 5 is started, and all positioning mechanisms 5 clamp and position the blank together, and at the same time, each protection mechanism 6 elastically limits the blank together; the hydraulic rod 3 is started, and the hydraulic rod 3 drives the fixed seat 10 to press down the blank. At this time, driven by the fixed seat 10, the sliding sleeve 11 presses down the elastic limiting sleeve 12, and the fixed seat 10 is buffered and vibration-reduced by the elastic limiting sleeve 12;

[0038] Under the downward pressure of the fixing seat 10, when the blank generates vertical cracks, the negative pressure in the suction mechanism 4 disappears, and the air pressure value of the air pressure sensor is less than the preset pressure threshold. At this time, the control module controls the hydraulic rod 3 to stop pressing down;

[0039] When the blank expands to both sides, the pressure value of the pressure sensor exceeds the preset pressure threshold. At this time, the control module controls the suction mechanism 4 to increase the adsorption force on the blank. At the same time, the control module controls the protection mechanism 6 to rise in height, thereby protecting the blank and preventing the blank from bursting and causing fragments to splash.

[0040] like Figure 2 and Figure 3 As shown, a hydraulic press with an automatic sensing safety protection device provided by the present invention, the suction mechanism 4 includes a telescopic sleeve 41, a suction cup 42 and an air pump 43;

[0041] The telescopic sleeve 41 is fixedly connected to the inner end surface of the placement groove 13 , the telescopic end of the telescopic sleeve 41 is fixedly connected to a suction cup 42 , the bottom surface of the workbench 1 is fixedly connected to an air pump 43 , the air pump 43 is communicated with the suction cup 42 , and an air pressure sensor is arranged in the suction cup 42 .

[0042] In this embodiment, when the blank is placed in the placement groove 13, the blank presses down the suction cup 42, and the suction cup 42 is adsorbed on the bottom of the blank. At the same time, the telescopic sleeve 41 is forced to shrink, and the air pump 43 is started. The gas in the telescopic sleeve 41 is extracted through the air pump 43, so that a negative pressure environment is generated in the telescopic sleeve 41, thereby adsorbing and fixing the blank.

[0043] like Figure 2 As shown, a hydraulic press with an automatic sensing safety protection device provided by the present invention, the inside of the placement groove 13 is provided with a rubber sleeve 14, the base of the elastic limiting sleeve 12 is filled with hydraulic oil, and an oil pipe 15 is connected between the base of the elastic limiting sleeve 12 and the rubber sleeve 14, and the oil pipe 15 is arranged in a ring around the suction cup 42.

[0044] In this embodiment, when the elastic limit sleeve 12 is subjected to the downward pressure of the sliding sleeve 11, the elastic limit sleeve 12 contracts, and at the same time, the elastic limit sleeve 12 fills the hydraulic oil into the oil pipe 15 through the rubber sleeve 14, and elastically supports a partial area of ​​the blank through the oil pipe 15, thereby reducing the vibration force when the blank is under pressure; at the same time, the suction cup 42 is abutted against the bottom of the blank through the oil pipe 15, thereby increasing the sealing between the suction cup 42 and the blank, and ensuring the adsorption stability of the suction cup 42 on the blank.

[0045] like Figure 5 As shown, a hydraulic press with an automatic sensing safety protection device provided by the present invention, the positioning mechanism 5 includes a guide rail 51, a positioning seat 52, a threaded shaft 53 and a motor 54;

[0046] The placement slot 13 is surrounded by guide rails 51 arranged in a rectangular shape, a positioning seat 52 is slidably connected to the guide rails 51, a threaded shaft 53 is rotatably connected to the guide rails 51, the threaded shaft 53 is threadedly connected to the positioning seat 52, a motor 54 is fixedly connected to the guide rails 51, and the output shaft of the motor 54 is fixedly connected to one end of the threaded shaft 53, and a pressure sensor is provided at a position of each positioning seat 52 facing the middle of the placement slot 13.

[0047] In this embodiment, the motor 54 is started, and the motor 54 drives the threaded shaft 53 to rotate. The threaded shaft 53 drives the positioning seat 52 to move in the guide rail 51 through thread transmission. The positioning seat 52 moves toward the blank until the pressure value of the pressure sensor reaches the set value, and the suction mechanism 4 is controlled to stop rotating. At this time, the blank is clamped and fixed by all the positioning seats 52.

[0048] like Figure 5 As shown, a hydraulic press with an automatic sensing safety protection device provided by the present invention is provided. The positioning seat 52 is rotatably connected to one end of the placement groove 13 with a push plate 7, and the push plate 7 is arc-shaped. An elastic torsion spring is rotatably connected between the push plate 7 and the placement groove 13. A plurality of triangular limit strips 8 are arranged on the arc surface of the push plate 7 facing the placement groove 13.

[0049] In this embodiment, when the positioning seat 52 moves toward the blank, the push plate 7 is in pre-contact with the blank. Under the push of the positioning seat 52, the push plate 7 rotates, and all the limit strips 8 on the push plate 7 apply a downward thrust to the blank. Under the push of the push plate 7, the blank is pressed down toward the suction cup 42, thereby increasing the adsorption stability between the blank and the suction cup 42.

[0050] like Figure 6 As shown, a hydraulic press with an automatic sensing safety protection device provided by the present invention, the protection mechanism 6 includes a sliding seat 61, an elastic limiting rod 62, a fixed baffle 63 and a sliding baffle 64;

[0051] The sliding seat 61 is slidably connected to the upper end surface of the positioning seat 52, an elastic limiting rod 62 is fixedly connected between the sliding seat 61 and the positioning seat 52, a fixed baffle 63 is fixedly connected to one end of the sliding seat 61 close to the placement groove 13, a sliding baffle 64 is vertically slidably connected to the fixed baffle 63, a filter screen 65 is provided on the side of the fixed baffle 63 and the sliding baffle 64 facing away from the placement groove 13, the sliding seat 61 is rotatably connected to the electric rod 66, the sliding baffle 64 is rotatably connected to the elastic push rod 67, and the elastic push rod 67 is elastically slidably connected to the telescopic end of the electric rod 66;

[0052] The end surfaces of the fixed baffle plate 63 and the sliding baffle plate 64 facing the placement groove 13 are provided with a plurality of strip-shaped baffle seats at intervals, and the end surfaces on both sides of the strip-shaped baffle seats are provided with a plurality of through holes.

[0053] In this embodiment, the elastic limiting rod 62 pushes the fixed baffle 63 to elastically abut against the blank, thereby reducing the vibration force when the blank is compressed and preventing the bottom debris from splashing. When the pressure value of the pressure sensor on the positioning seat 52 exceeds the preset pressure threshold, it means that the blank is over-expanded under pressure, and the control module controls the electric rod 66 to start extending. The electric rod 66 pushes the sliding baffle 64 to move upward through the elastic push rod 67 until the upper side of the sliding baffle 64 abuts against the lower side end surface of the fixed seat 10. At this time, the blank is protected by the cooperation of all the fixed baffles 63 and the sliding baffle 64 to prevent the blank from breaking suddenly and causing debris to splash. At the same time, the top of the sliding baffle 64 elastically supports the fixed seat 10 to prevent the fixed seat 10 from losing support when the blank breaks suddenly. Under the action of the impact force, the hydraulic rod 3 and the fixed seat 10 vibrate and deform.

[0054] The fixed baffle 63 and the sliding baffle 64 are provided with a plurality of strip baffles at intervals on the end faces facing the placement groove 13. The intervals between the strip baffles can allow the blank to accumulate outward when it expands and breaks, and at the same time, each strip baffle can increase the blocking area for the fragments to prevent the fragments from splashing to the outside; a plurality of through holes are provided on the end faces on both sides of the strip baffles, and the through holes on the end faces on both sides of the strip baffles can allow the airflow generated by the break of the blank to diffuse into the fixed baffles 63 around it, and at the same time, the filter screen 65 on the back of the fixed baffle 63 can collect dust and impurities in the airflow.

[0055] like Figure 4 As shown, a hydraulic press with an automatic sensing safety protection device provided by the present invention is provided, and the upper end of the fixed baffle 63 is horizontally slidably connected with a suction plate 9.

[0056] In this embodiment, when the electric rod 66 pushes the sliding baffle 64 upward through the elastic push rod 67, the sliding baffle 64 drives the suction plate 9 to adsorb to the lower end surface of the fixed seat 10. When the blank is crushed, the crushed materials push the fixed baffle 63, and the fixed baffle 63 slides outward together with the sliding baffle 64. At this time, the suction plate 9 can always be adsorbed and fixed to the fixed seat 10, thereby maintaining the supporting force for the fixed seat 10 and preventing the sliding baffle 64 from moving and losing the elastic support protection for the fixed seat 10.

[0057] Working principle:

[0058] The blank is placed in the placement groove 13. At this time, the blank presses down the suction cup 42, and the suction cup 42 is adsorbed on the bottom of the blank. At the same time, the telescopic sleeve 41 is contracted by force, and the air pump 43 is started. The air in the telescopic sleeve 41 is extracted through the air pump 43, so that a negative pressure environment is generated in the telescopic sleeve 41, so that the blank is adsorbed and fixed;

[0059] The motor 54 is started, and the motor 54 drives the threaded shaft 53 to rotate. The threaded shaft 53 drives the positioning seat 52 to move in the guide rail 51 through the threaded transmission, and the positioning seat 52 moves toward the blank until the pressure value of the pressure sensor reaches the set value, and the motor 54 is controlled to stop rotating. At this time, all the positioning seats 52 clamp and fix the blank; when the positioning seat 52 moves toward the blank, the push plate 7 abuts against the blank in advance, and under the push of the positioning seat 52, the push plate 7 rotates, and all the limiting strips 8 on the push plate 7 apply a downward thrust to the blank. Under the push of the push plate 7, the blank is pressed down toward the suction cup 42, thereby increasing the adsorption stability between the blank and the suction cup 42; at this time, each elastic limiting rod 62 pushes the corresponding fixed baffle 63 to elastically abut against the blank, thereby reducing the vibration force when the blank is pressed, and at the same time avoiding the splashing of bottom debris;

[0060] Start the hydraulic rod 3, which drives the fixed seat 10 to press down the blank. Driven by the fixed seat 10, the sliding sleeve 11 presses down the elastic limiting sleeve 12, and the elastic limiting sleeve 12 buffers and reduces vibration of the fixed seat 10; when the elastic limiting sleeve 12 is subjected to the downward pressure of the sliding sleeve 11, the elastic limiting sleeve 12 contracts, and at the same time, the elastic limiting sleeve 12 fills the hydraulic oil into the oil pipe 15 through the rubber sleeve 14, and the oil pipe 15 elastically supports a part of the blank area to reduce the vibration force when the blank is compressed; at the same time, the oil pipe 15 abuts and seals the surroundings of the suction cup 42, thereby increasing the sealing between the suction cup 42 and the blank, and ensuring the suction stability of the suction cup 42 on the blank;

[0061] Under the downward pressure of the fixed seat 10, when the blank produces vertical cracks, the negative pressure in the suction mechanism 4 disappears, and the air pressure value of the air pressure sensor is less than the preset pressure threshold. At this time, the control module controls the hydraulic rod 3 to stop pressing down, and at the same time, the control module immediately controls the electric rod 66 to start extending. The electric rod 66 pushes the sliding baffle 64 to move upward through the elastic push rod 67 until the upper side of the sliding baffle 64 abuts against the lower side end surface of the fixed seat 10. At this time, the blank is surrounded by the cooperation of all the fixed baffles 63 and the sliding baffle 64 to prevent the blank from breaking suddenly and causing the fragments to splash. At the same time, the top of the sliding baffle 64 elastically supports the fixed seat 10 to prevent the fixed seat 10 from losing support when the blank breaks suddenly. Under the action of the impact force, the hydraulic rod 3 and the fixed seat 10 vibrate and deform;

[0062] When the electric rod 66 pushes the sliding baffle 64 upwards through the elastic push rod 67, the sliding baffle 64 drives the suction plate 9 to adsorb to the lower end surface of the fixed seat 10. When the blank is crushed, the crushed material pushes the fixed baffle 63, and the fixed baffle 63 slides outward together with the sliding baffle 64. At this time, the suction plate 9 can always be adsorbed and fixed to the fixed seat 10, thereby maintaining the support force for the fixed seat 10 and preventing the sliding baffle 64 from moving and losing the elastic support protection for the fixed seat 10;

[0063] When the blank expands to both sides, the pressure value of the pressure sensor exceeds the preset pressure threshold. At this time, the control module controls the air pump 43 to increase the adsorption force on the blank. At the same time, the control module controls the electric rod 66 to start extending, thereby protecting the blank and preventing the blank from bursting and causing fragments to splash.

[0064] With the cooperation of the air pressure sensor and the pressure sensor, the vertical fracturing and horizontal expansion of the billet can be effectively monitored, thereby improving the protection effect of the hydraulic rod 3 and preventing the hydraulic rod 3 and the fixing seat 10 from vibrating and deforming under the action of the impact force when the billet suddenly breaks.

[0065] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

[0066] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A hydraulic press with an automatic sensing safety protection device, comprising a workbench (1), wherein the workbench (1) is fixedly connected to a support frame (2), wherein the support frame (2) is fixedly connected to a hydraulic rod (3), wherein the telescopic end of the hydraulic rod (3) is fixedly connected to a fixed seat (10), characterized in that: The side walls of the fixed seat (10) are fixedly connected with sliding sleeves (11), and the sliding sleeves (11) are slidably connected to the support frame (2). Both ends of the support frame (2) are sleeved with elastic limit sleeves (12), and the elastic limit sleeves (12) are fixedly connected to the end surface of the workbench (1). The end surface of the workbench (1) is provided with a placement groove (13), and the placement groove (13) is directly opposite to the fixed seat (10). A suction mechanism (4) is provided in the middle of the placement groove (13), and the suction mechanism (4) can absorb and fix the blank; A plurality of positioning mechanisms (5) are arranged in a rectangular shape around the placement groove (13), and the positioning mechanisms (5) can simultaneously clamp and fix the blank in the placement groove (13). Each positioning mechanism (5) is provided with a protection mechanism (6), and the protection mechanism (6) can elastically limit the blank, and the protection mechanism (6) can also be vertically extended and retracted; A control system comprising: A monitoring module, the monitoring module comprising an air pressure sensor and a plurality of pressure sensors, the air pressure sensor being arranged in the suction mechanism (4), and each positioning mechanism (5) being provided with a pressure sensor at a position facing the middle of the placement slot (13); A processing module, the processing module is used to compare the pressure values ​​of the air pressure sensor and all the pressure sensors with preset pressure thresholds respectively, and form judgment information; A control module, wherein the control module can control the hydraulic rod (3), the suction mechanism (4) and the protection mechanism (6) according to the judgment information.

2. The hydraulic press with automatic sensing safety protection device according to claim 1 is characterized in that: The suction mechanism (4) comprises a telescopic sleeve (41), a suction cup (42) and an air pump (43); The telescopic sleeve (41) is fixedly connected to the inner end surface of the placement groove (13); the telescopic end of the telescopic sleeve (41) is fixedly connected to a suction cup (42); the bottom surface of the workbench (1) is fixedly connected to an air pump (43); the air pump (43) is in communication with the suction cup (42); and an air pressure sensor is arranged in the suction cup (42).

3. The hydraulic press with automatic sensing safety protection device according to claim 2 is characterized in that: A rubber sleeve (14) is arranged inside the placement groove (13), the base of the elastic limiting sleeve (12) is filled with hydraulic oil, an oil pipe (15) is connected between the base of the elastic limiting sleeve (12) and the rubber sleeve (14), and the oil pipe (15) is arranged in a ring around the suction cup (42).

4. The hydraulic press with automatic sensing safety protection device according to claim 1 is characterized in that: The positioning mechanism (5) comprises a guide rail (51), a positioning seat (52), a threaded shaft (53) and a motor (54); Guide rails (51) are arranged in a rectangular shape around the placement groove (13); a positioning seat (52) is slidably connected to the guide rail (51); a threaded shaft (53) is rotatably connected to the guide rail (51); the threaded shaft (53) is threadedly connected to the positioning seat (52); a motor (54) is fixedly connected to the guide rail (51); an output shaft of the motor (54) is fixedly connected to one end of the threaded shaft (53); and a pressure sensor is arranged at a position of each positioning seat (52) facing the middle of the placement groove (13).

5. The hydraulic press with automatic sensing safety protection device according to claim 4 is characterized in that: One end of the positioning seat (52) close to the placement groove (13) is rotatably connected to a push plate (7), the push plate (7) is arc-shaped, an elastic torsion spring is rotatably connected between the push plate (7) and the placement groove (13), and a plurality of triangular limiting strips (8) are arranged on the arc surface of the push plate (7) facing the placement groove (13).

6. The hydraulic press with automatic sensing safety protection device according to claim 4 is characterized in that: The protection mechanism (6) comprises a sliding seat (61), an elastic limiting rod (62), a fixed baffle (63) and a sliding baffle (64); The sliding seat (61) is slidably connected to the upper end surface of the positioning seat (52); an elastic limiting rod (62) is fixedly connected between the sliding seat (61) and the positioning seat (52); a fixed baffle (63) is fixedly connected to one end of the sliding seat (61) close to the placement groove (13); a sliding baffle (64) is vertically slidably connected to the fixed baffle (63); a filter screen (65) is provided on one side of the fixed baffle (63) and the sliding baffle (64) facing away from the placement groove (13); the sliding seat (61) is rotatably connected to an electric rod (66); the sliding baffle (64) is rotatably connected to an elastic push rod (67); the elastic push rod (67) is elastically slidably connected to the telescopic end of the electric rod (66); A plurality of strip-shaped blocking seats are arranged at intervals on the end surfaces of the fixed blocking plate (63) and the sliding blocking plate (64) facing the placement groove (13), and a plurality of through holes are arranged on the end surfaces on both sides of the strip-shaped blocking seats.

7. The hydraulic press with automatic sensing safety protection device according to claim 6 is characterized in that: The upper end of the fixed baffle (63) is horizontally slidably connected to a suction plate (9).

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