An online automatic detection device for sawing machine discharge suction cup

Abstract

The present invention discloses an online automatic detection device for a discharge suction cup of a sawing machine, wherein a cavity is provided inside the suction cup, the top of the cavity is connected to a negative pressure machine, the bottom of the cavity is connected to the lower end of the suction cup, an air bag is fixed on one side wall inside the cavity, a push plate arranged in a vertical direction is slidably connected inside the cavity, and one end of the air bag away from the cavity is fixed to the push plate; a pressure sensor is fixed on the side wall of the cavity away from the air bag, the contact of the pressure sensor faces the push plate, the pressure sensor is electrically connected to a controller, and the controller is electrically connected to a display. The present invention does not affect the use of the suction cup, and the suction cup can be monitored online in real time.

Description

Technical Field

[0001] The invention relates to an online automatic detection device for a discharge suction cup of a sawing machine, belonging to the technical field of auxiliary equipment of sawing machines. Background Art

[0002] After the existing large-scale sawing machine cuts the aluminum ingot into large thin plates, the thin plates are kept horizontal and multiple side-by-side suction cups are used to absorb the thin plates so as to transport the cut plates. However, during long-term use, it is impossible to know whether the suction cups are damaged or whether the suction cups suck the thin plates tightly. If the damage of the suction cups is not discovered in time or the suction cups do not suck the thin plates tightly, the thin plates may easily fall during the process of the suction cups transporting the plates, which may easily cause safety accidents.

[0003] Furthermore, the existing suction cups require a negative pressure machine to continuously pump negative pressure during the discharge process of the thin plate, resulting in a waste of energy. Summary of the invention

[0004] The technical problem to be solved by the present invention is to provide an online automatic detection device for a discharge suction cup of a sawing machine to solve the problems existing in the above-mentioned prior art.

[0005] The technical solution adopted by the present invention is: an online automatic detection device for a sawing machine discharge suction cup, a cavity is opened inside the suction cup, the top of the cavity is connected with a negative pressure machine, the bottom of the cavity is connected with the lower end of the suction cup, an airbag is fixed on one side wall inside the cavity, a push plate arranged in a vertical direction is slidably connected inside the cavity, and one end of the airbag away from the cavity is fixed to the push plate; a pressure sensor is fixed on the side wall of the cavity away from the airbag, the contact of the pressure sensor faces the push plate, the pressure sensor is electrically connected to a controller, and the controller is electrically connected to a display.

[0006] Preferably, an automatic valve is provided at the inlet end of the suction cup, and the automatic valve is electrically connected to the controller; an automatic valve switch is fixed on the side wall of the cavity where the pressure sensor is located, and the contacts of the automatic valve switch face the push plate; the automatic valve is electrically connected to a manual switch through the controller, and the manual switch and the automatic valve switch are double-control switches.

[0007] Preferably, a first filter screen and a second filter screen are fixed to the top and bottom of the cavity respectively, and the push plate is located between the first filter screen and the second filter screen.

[0008] Preferably, a threaded through hole is provided on the side wall of the suction cup, a threaded plug is threadedly connected inside the threaded through hole, and the airbag is fixed on the threaded plug.

[0009] Preferably, a push rod arranged in the horizontal direction is fixed on the push plate, and the end of the push rod away from the push plate passes through the side wall of the suction cup and extends outside the suction cup. A connecting rod is rotatably connected to the end of the push rod away from the push plate, and the connecting rod can rotate in the vertical direction. A scraper is fixed to the lower end of the connecting rod; the upper end of the scraper is flush with the lower end of the second filter; and a torsion spring is provided on the push rod to allow the connecting rod to rotate to below the push rod.

[0010] Preferably, the number of the connecting rods is set to two, the left ends of the two connecting rods are in a "V" shape, and the two connecting rods are both located below the push rod and the angles between the two connecting rods and the vertical direction are both acute angles.

[0011] Preferably, the scraper is arranged in a vertical direction.

[0012] Preferably, the air pressure inside the airbag is 0.11-0.20 MPa.

[0013] Beneficial effects of the present invention:

[0014] 1. Compared with the prior art, the present invention arranges a cavity inside the suction cup and arranges an airbag and a pressure sensor inside the cavity. If the suction cup is intact, the airbag can expand and squeeze the pressure sensor, and the pressure of the pressure sensor is displayed on the display; if the suction cup is damaged, the airbag will not expand and cannot squeeze the pressure sensor, and the pressure will not be displayed on the display; whether the suction cup is damaged can be judged by whether the pressure is displayed on the display, and the damage of the suction cup can be found in time and which suction cup is damaged can be quickly determined, which is convenient for rapid search and maintenance of the damaged suction cup, and avoids safety accidents caused by the thin plate falling off due to the failure to find the damage of the suction cup in time or the failure of the suction cup to suck the thin plate tightly during the process of the suction cup transporting the plate; the present invention does not affect the use of the suction cup and can be monitored online in real time.

[0015] 2. Compared with the prior art, the present invention provides a push plate, a push rod, a fixed rod, a connecting rod and a scraper. The scraper is driven to move left and right by the contraction of the airbag, and the scraper is driven to rotate by the up and down movement of the suction cup, so as to realize automatic cleaning of the flocculent dust on the lower end surface of the second filter.

[0016] 3. Compared with the prior art, the present invention provides an automatic valve on the suction tube. When the pressure value detected by the pressure sensor reaches the maximum pressure, the controller controls the automatic valve to close, thereby maintaining a certain negative pressure inside the suction cup. The suction cup can continuously suck the thin plate tightly, and the negative pressure machine can stop working during the discharge of the thin plate, thereby saving energy. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a front cross-sectional view of the overall structure of the present invention.

[0018] Figure 2 for Figure 1 Enlarged view of part A in the middle.

[0019] Figure 3 It is a partial structural side view of the present invention. DETAILED DESCRIPTION

[0020] The present invention is further described below in conjunction with the accompanying drawings and specific embodiments.

[0021] The figure marks in the drawings of the specification include: suction pipe 10, automatic valve 11, suction cup 20, first filter 21, second filter 22, threaded plug 23, handle 24, airbag 25, push plate 26, push rod 27, pressure sensor 28, automatic valve switch 29, connecting rod 30, scraper 31, fixing rod 32, torsion spring 33.

[0022] Embodiment 1:

[0023] An online automatic detection device for a sawing machine discharge suction cup, such as Figure 1 As shown, the suction cup 20 has a rectangular plate shape, a rectangular cavity is provided inside the suction cup 20, the axis of the cavity is arranged in the horizontal direction, the top of the cavity is connected to the negative pressure machine through the suction pipe 10, the bottom of the cavity is connected to the lower end of the suction cup 20, a threaded through hole is provided on the right side wall of the suction cup 20, the axis of the threaded through hole is arranged in the horizontal direction, a threaded plug 23 is threadedly connected inside the threaded through hole, a hexagonal handle 24 is coaxially fixed on the right end of the threaded plug 23, and a The airbag 25 is made of high-pressure resistant rubber. The air pressure inside the airbag 25 is 0.11 MPa. The right end of the airbag 25 is fixed to the left end of the threaded plug 23. The interior of the cavity is slidably connected with a push plate 26 arranged in the vertical direction. The left end of the airbag 25 is fixed to the right end of the push plate 26. A pressure sensor 28 is fixed to the left side wall of the cavity. The contact of the pressure sensor 28 is horizontally arranged to the right. The pressure sensor 28 is electrically connected to the controller, and the controller is electrically connected to the display.

[0024] In the initial state, the air pressure inside the airbag 25 is 0.11MPa. If the suction cup is intact, when the lower end of the suction cup 20 is tightly sucked with the thin plate, under the action of the negative pressure machine, the inside of the cavity is evacuated, the pressure outside the airbag 25 decreases, and the airbag 25 expands. The expansion of the airbag 25 pushes the push plate 26 to slide to the left and presses on the pressure sensor 28. The pressure sensor 28 displays the pressure value on the display through the controller. If the suction cup 20 is damaged, the lower end of the suction cup 20 is connected to the outside world, the inside of the cavity cannot be evacuated, the airbag 25 cannot expand and cannot press on the pressure sensor 28, and thus the pressure value cannot be displayed on the display. If the pressure value displayed on the display is between the above two, it means that the suction cup is leaking or the contact surface between the suction cup and the thin plate is uneven; therefore, whether the suction cup 20 is damaged can be judged based on whether the pressure value is displayed on the display and the size of the pressure value.

[0025] The threaded plug 23 is provided to adjust the position of the airbag 25 and facilitate installation and replacement of the airbag 25 by screwing the threaded plug 23. A handle 24 is provided to facilitate screwing the threaded plug 23.

[0026] In this embodiment, each suction cup 20 is connected to the negative pressure machine via a suction pipe 10 , and the suction cups 20 do not interfere with each other when drawing negative pressure.

[0027] Furthermore, the detection device does not affect the operation of the suction cup 20 . Therefore, the present embodiment can detect whether the suction cup 20 is damaged in real time online, and is easy to use.

[0028] like Figure 1 As shown, a first filter screen 21 and a second filter screen 22 are fixed to the top and bottom of the cavity respectively, and a push plate 26 is located between the first filter screen 21 and the second filter screen 22. The first filter screen 21 and the second filter screen 22 allow gas to pass through while limiting the push plate 26 inside the cavity and allowing the push plate 26 to only slide left and right.

[0029] After the suction cup 20 is used for a long time, the lower end surface of the second filter screen 22 is easily adhered with flocculent dust, which affects the close fit between the suction cup 20 and the thin plate, and is not conducive to the suction cup 20 sucking up the thin plate. Therefore, in this embodiment, the cross section of the second filter screen 22 is "T" shaped, and the lower end surface of the second filter screen 22 is flush with the lower end surface of the suction cup 20.

[0030] like Figure 1-Figure 3 As shown, a push rod 27 arranged in the horizontal direction is coaxially fixed on the left end surface of the push plate 26, and the left end of the push rod 27 penetrates the side wall of the suction cup 20 and extends outside the suction cup 20. A fixing rod 32 arranged in the horizontal direction is fixed on the left end of the push rod 27, and the left end of the fixing rod 32 is rotatably connected to two "L"-shaped connecting rods 30, and the left ends of the two "L"-shaped connecting rods 30 are in an inverted "V" shape, and the two "L"-shaped connecting rods 30 are both located below the fixing rod 32 and are perpendicular to the vertical direction. The angles between them are all 30°. The cross section of the "L"-shaped connecting rod 30 is circular. The connecting rod 30 can rotate in the vertical direction along the fixed rod 32. A scraper 31 arranged in the vertical direction is fixed to the right end of the connecting rod 30. The upper end of the scraper 31 is flush with the lower end of the second filter screen 22. A torsion spring 33 is sleeved on the fixed rod 32. One end of the torsion spring 33 is fixed on the fixed rod 32, and the other end of the torsion spring 33 is fixed on the connecting rod 30. When the external force disappears, the torsion spring 33 resets the connecting rod 30. The number of torsion springs 33 is set to two and they are connected to two connecting rods 30 respectively. When the airbag 25 is reset, the right end of the scraper 31 is located at the right end of the lower end surface of the second filter screen 22.

[0031] When the suction cup 20 moves downward to contact the thin plate, first, the scraper 31 contacts the thin plate. As the suction cup 20 continues to move downward, the lower ends of the two "L"-shaped connecting rods 30 rotate relative to the fixed rod 32 due to the compression of the thin plate, and the two connecting rods 30 move away from each other, thereby preventing the scraper 31 from blocking the suction cup 20 from adsorbing the thin plate, and the torsion spring 33 stores energy; when the airbag 25 drives the push rod 27 to move left, the push rod 27 drives the connecting rod 30 to move left through the fixed rod 32; when the suction cup 20 moves downward, the push rod 27 drives the connecting rod 30 to move left through the fixed rod 32; After the thin plate is transported to the designated position by the suction cup 20, the automatic valve 11 opens during the process of the suction cup 20 putting down the thin plate, the cavity is connected to the outside, the air bag 25 contracts, and the push plate 26 drives the scraper 31 to move rightward to the right limit position through the push rod 27 and the fixed rod 32. At the same time, the suction cup 20 moves upward, and the two scrapers 31 quickly rotate to the bottom of the second filter screen 22 and reset under the force of the torsion spring 33. During the reset process of the scraper 31, the flocculent dust on the lower end surface of the second filter screen 22 can be scraped off. Since the force of the torsion spring 33 on the scraper 31 is instantaneous during the reset process of the scraper 31, the scraper 31 will vibrate back and forth, so the two scrapers 31 can scrape off all the flocculent dust on the lower surface of the second filter screen 22.

[0032] like Figure 1 As shown, an automatic valve switch 29 is fixed on the left wall of the cavity, and the contact of the automatic valve switch 29 is horizontally arranged to the right. An automatic valve 11 is arranged inside the air intake pipe 10, and the automatic valve 11 is electrically connected to the automatic valve switch 29 through a controller. When the automatic valve switch 29 is pressed, the automatic valve switch 29 controls the automatic valve 11 to be closed through the controller; the automatic valve 11 is electrically connected to a manual switch, and the manual switch and the automatic valve switch 29 are double-control switches; when the manual switch is pressed, the automatic valve 11 is opened again.

[0033] When the airbag 25 squeezes the automatic valve switch 29, the automatic valve switch 29 controls the automatic valve 11 to close, so that a certain negative pressure is maintained inside the suction cup 20. During the process of discharging the thin plate, the suction cup 20 can continue to suck the thin plate tightly. During the process of discharging the thin plate, the negative pressure machine can stop working, thereby saving energy. When the thin plate needs to be put down, the automatic valve 11 is opened through the manual switch, the inside of the cavity is connected to the outside, the airbag 25 is reset, and the suction cup 20 is separated from the thin plate.

[0034] The suction cup 20 and the suction pipe 10 in this embodiment are both made of high-pressure stainless steel, and the suction cup 20 and the suction pipe 10 are not deformable.

[0035] The above description is only a specific implementation mode of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed by the present invention, which should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. An online automatic detection device for a discharge suction cup of a sawing machine, characterized in that: A cavity is provided inside the suction cup (20), the top of the cavity is connected to the negative pressure machine, the bottom of the cavity is connected to the lower end of the suction cup (20), an air bag (25) is fixed on one side wall inside the cavity, a push plate (26) arranged in a vertical direction is slidably connected inside the cavity, and the end of the air bag (25) away from the cavity is fixed to the push plate (26); a pressure sensor (28) is fixed on the side wall of the cavity away from the air bag (25), the contact of the pressure sensor (28) faces the push plate (26), the pressure sensor (28) is electrically connected to a controller, and the controller is electrically connected to a display; an automatic valve (11) is provided at the inlet end of the suction cup (20), the The automatic valve (11) is electrically connected to the controller; an automatic valve switch (29) is fixed on the side wall of the cavity where the pressure sensor (28) is located, and the contact of the automatic valve switch (29) faces the push plate (26); the automatic valve (11) is electrically connected to a manual switch through the controller, and the manual switch and the automatic valve switch (29) are double-control switches; a first filter screen (21) and a second filter screen (22) are fixed on the top and bottom of the cavity respectively, and the push plate (26) is located between the first filter screen (21) and the second filter screen (22); a push rod (27) arranged in a horizontal direction is fixed on the push plate (26), and the push rod (27) is away from the push plate (26). One end of the push rod (27) passes through the side wall of the suction cup (20) and extends outside the suction cup (20); a connecting rod (30) is rotatably connected to the end of the push rod (27) away from the push plate (26); the connecting rod (30) can rotate in the vertical direction; a fixing rod (32) whose axis is arranged in the horizontal direction is fixed to the left end of the push rod (27); two "L"-shaped connecting rods (30) are rotatably connected to the left end of the fixing rod (32); a scraper (31) is fixed to the lower end of the connecting rod (30); the upper end of the scraper (31) is flush with the lower end of the second filter screen (22); a torsion spring (33) is provided on the push rod (27) to allow the connecting rod (30) to rotate to the bottom of the push rod (27); the scraper (31) arranged in the vertical direction; the number of the connecting rods (30) is set to two, the left ends of the two connecting rods (30) are in a "V" shape, the two connecting rods (30) are both located below the push rod (27) and the angles between them and the vertical direction are both acute angles; when the suction cup (20) moves downward until it contacts the thin plate, first, the scraper (31) contacts the thin plate, and when the suction cup (20) continues to move downward, the lower ends of the two "L"-shaped connecting rods (30) rotate relative to the fixing rod (32) due to the compression of the thin plate, and the two connecting rods (30) move away from each other, thereby preventing the scraper (31) from blocking the suction cup (20) from adsorbing the thin plate, and the torsion spring (33) stores energy;During the process of the airbag (25) driving the push rod (27) to move to the left, the push rod (27) drives the connecting rod (30) to move to the left through the fixing rod (32); after the suction cup (20) transports the thin plate to the designated position, during the process of the suction cup (20) putting down the thin plate, the automatic valve (11) opens, the cavity is connected to the outside, the airbag (25) contracts, the push plate (26) drives the scraper (31) to move to the right to the right extreme position through the push rod (27) and the fixing rod (32), and at the same time, the suction cup (20) moves upward, and the two scrapers (31) are rapidly rotated to the bottom of the second filter screen (22) under the action of the torsion spring (33) and reset, and the flocculent dust on the lower end surface of the second filter screen (22) is scraped off during the process of the scraper (31) resetting. ; 2. The on-line automatic detection device for the discharge suction cup of a sawing machine according to claim 1, characterized in that: A threaded through hole is provided on the side wall of the suction cup (20), a threaded plug (23) is threadedly connected inside the threaded through hole, and the air bag (25) is fixed on the threaded plug (23).

3. The on-line automatic detection device for the discharge suction cup of a sawing machine according to claim 1, characterized in that: The air pressure inside the airbag (25) is 0.11-0.20 MPa.

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