Self-lubricating lifting device for automatic bag sealing machine

Abstract

The utility model relates to the technical field of lifting devices, in particular to a self-lubricating lifting device for an automatic bag sealing machine. According to the technical scheme, the lubricating device comprises a rack and a lead screw rotationally installed on the rack, a motor with an output shaft fixedly connected with the lead screw is fixedly installed on the rack, a thread sleeve is connected to the lead screw in a threaded mode, the lubricating device further comprises a lubricating module fixedly installed on the thread sleeve, and the lubricating module comprises a hopper fixedly installed on the thread sleeve. An oil conveying ring is fixedly mounted on the hopper, an oil tank is fixedly mounted on the oil conveying ring, and a plugging mechanism for controlling the communication state of the oil tank and the oil conveying ring according to the lifting distance of the threaded sleeve is mounted between the oil tank and the oil conveying ring. The inner portion of the thread sleeve can be automatically lubricated according to the relative movement distance between the thread sleeve and the lead screw, the problem of excessive lubrication caused by frequent lubrication can be avoided, and the problem of abrasion caused by too little lubrication can be prevented.

Description

Technical Field

[0001] This utility model relates to the field of lifting device technology, and in particular to a self-lubricating lifting device for an automatic bag sealing machine. Background Technology

[0002] The automatic bag sealing and lifting mechanism is driven by a servo motor to rotate the lead screw, which causes the bag sealing mechanism to move up and down. During operation, the lead screw needs to be lubricated regularly to reduce wear and extend its service life.

[0003] The lubrication of the lead screw is based on the distance the screw sleeve moves on the lead screw. Even if lubrication is performed regularly, the amount of lubrication required may vary depending on the distance the screw sleeve moves. Utility Model Content

[0004] The purpose of this invention is to address the problems existing in the background technology by proposing a self-lubricating lifting device for an automatic bag sealing machine.

[0005] The technical solution of this utility model: A self-lubricating lifting device for an automatic bag sealing machine, comprising a frame and a lead screw rotatably mounted on the frame, a motor with an output shaft fixedly connected to the lead screw being fixedly mounted on the frame, and a threaded sleeve being threaded onto the lead screw, and further comprising:

[0006] A lubrication module is fixedly installed on a threaded sleeve. The lubrication module includes a hopper fixedly installed on the threaded sleeve, an oil delivery ring fixedly installed on the hopper, an oil tank fixedly installed on the oil delivery ring, and a sealing mechanism installed between the oil tank and the oil delivery ring to control the communication state between the oil tank and the oil delivery ring according to the lifting distance of the threaded sleeve.

[0007] Optionally, the sealing mechanism includes a mounting box fixedly installed between the oil tank and the oil supply ring. The two ends of the mounting box are respectively connected to the oil tank and the oil supply ring. A sealing plate is fixedly installed inside the mounting box. The sealing plate is provided with a flow hole. A sliding plate is slidably installed inside the mounting box. A first spring is fixedly installed between the sliding plate and the mounting box. A push plate is slidably installed inside the mounting box. The push plate is provided with an inclined surface that contacts the sliding plate.

[0008] Optionally, a nut is fixedly installed on the mounting box, and a transmission rod is threadedly connected to the nut. The transmission rod passes through one side of the mounting box and extends into the interior of the mounting box. A connecting plate is rotatably installed on the transmission rod, and a guide rod is slidably installed on the connecting plate. The guide rod is fixedly connected to the push plate, and a second spring is fixedly installed between the push plate and the connecting plate. The mounting box is equipped with a one-way transmission assembly that drives the transmission rod to rotate in one direction according to the lifting state of the screw sleeve.

[0009] Optionally, the one-way transmission assembly includes a transmission shaft fixedly mounted on a transmission rod, a drive rod rotatably mounted on the threaded sleeve, a first connecting plate fixedly mounted on the transmission shaft, a plurality of drive columns fixedly mounted on the first connecting plate, a second connecting plate fixedly mounted on the drive rod, a plurality of first push blocks rotatably mounted on the second connecting plate and a plurality of first limit blocks fixedly mounted thereon, and a torsion spring fixedly mounted between the first push blocks and the second connecting plate.

[0010] Optionally, a roller is fixedly installed on the drive rod, and a friction strip is fixedly installed on the frame, with the roller abutting against one side of the friction strip.

[0011] Optionally, a support base is slidably mounted on the frame, the support base is fixedly connected to the screw sleeve, and a sealing mechanism is fixedly mounted on the support base.

[0012] Optionally, telescopic tubes are fixedly installed on both the upper and lower sides of the support base, and the other end of the telescopic tube is fixedly connected to the frame, with the lead screw located inside the telescopic tube.

[0013] Optionally, the hopper is provided with a conical hole, and multiple oil delivery nozzles are fixedly installed on the oil delivery ring, with the oil delivery nozzles located inside the conical hole.

[0014] In summary, this application includes at least one of the following beneficial technical effects:

[0015] This invention, through the setting of a lubrication module, can automatically lubricate the inside of the threaded sleeve according to the relative movement distance between the threaded sleeve and the lead screw. This can avoid the problem of over-lubrication caused by frequent lubrication and prevent the problem of wear caused by insufficient lubrication. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the lifting device.

[0017] Figure 2 This is a schematic diagram of the lead screw structure;

[0018] Figure 3 This is a schematic diagram of the screw sleeve structure;

[0019] Figure 4 This is a schematic diagram of the sealing mechanism and its internal structure;

[0020] Figure 5 This is a schematic diagram showing the location of the unidirectional transmission component;

[0021] Figure 6 Schematic diagram of a unidirectional transmission assembly Figure 1 ;

[0022] Figure 7 Schematic diagram of a unidirectional transmission assembly Figure 2 .

[0023] Reference numerals: 1. Frame; 2. Lead screw; 201. Motor; 202. Support base; 203. Screw sleeve; 3. Sealing mechanism; 4. Telescopic tube; 5. Hopper; 501. Tapered hole; 502. Oil supply ring; 503. Oil supply nozzle; 504. Oil tank; 6. Sealing mechanism; 601. Mounting box; 602. Sealing plate; 603. Flow hole; 604. Slide plate; 605. First spring; 606. Push plate; 607. Nut; 608. Transmission rod; 609. Connecting plate; 610. Guide rod; 611. Second spring; 612. Transmission shaft; 613. Drive rod; 616. First connecting plate; 617. Drive column; 618. Second connecting plate; 619. First push block; 620. First limit block; 626. Roller; 627. Friction strip. Detailed Implementation

[0024] The technical solution of this utility model will be further described below with reference to the accompanying drawings and specific embodiments.

[0025] like Figures 1 to 2 As shown, this utility model proposes a self-lubricating lifting device for an automatic bag sealing machine, including a frame 1 and a lead screw 2 rotatably mounted on the frame 1. A motor 201 with an output shaft fixedly connected to the lead screw 2 is fixedly mounted on the frame 1. A threaded sleeve 203 is threadedly connected to the lead screw 2. A support base 202 is slidably mounted on the frame 1, and the support base 202 is fixedly connected to the threaded sleeve 203. A sealing mechanism 3 is fixedly mounted on the support base 202. The motor 201 drives the lead screw 2 to rotate, which in turn drives the support base 202 to move up and down, thereby driving the sealing mechanism 3 to move up and down.

[0026] The support base 202 has telescopic tubes 4 fixedly installed on both the upper and lower sides. The other end of the telescopic tube 4 is fixedly connected to the frame 1. The telescopic tube 4 covers the lead screw 2, which can effectively prevent impurities from entering and adhering to the lead screw 2 and prevent the lead screw 2 from excessive wear.

[0027] like Figures 2 to 7As shown, this embodiment also includes a lubrication module fixedly installed on the screw sleeve 203. The lubrication module includes a hopper 5 fixedly installed on the screw sleeve 203, an oil delivery ring 502 fixedly installed on the hopper 5, an oil tank 504 fixedly installed on the oil delivery ring 502, a conical hole 501 provided in the hopper 5, and multiple oil delivery nozzles 503 fixedly installed on the oil delivery ring 502, with the oil delivery nozzles 503 located inside the conical hole 501. When the oil tank 504 is connected to the oil delivery ring 502, the lubricating oil inside the oil tank 504 will enter the oil delivery ring 502 and drip into the conical hole 501 through the oil delivery nozzles 503, which can lubricate the screw sleeve 203 between it and the lead screw 2. A sealing mechanism 6 is installed between the oil tank 504 and the oil delivery ring 502 to control the connection state between the oil tank 504 and the oil delivery ring 502 according to the lifting distance of the screw sleeve 203.

[0028] Furthermore, the sealing mechanism 6 includes a mounting box 601 fixedly installed between the oil tank 504 and the oil supply ring 502. Both ends of the mounting box 601 are connected to the oil tank 504 and the oil supply ring 502, respectively. A sealing plate 602 is fixedly installed inside the mounting box 601, and the sealing plate 602 has a flow hole 603. A sliding plate 604 is slidably installed inside the mounting box 601, and a first spring 605 is fixedly installed between the sliding plate 604 and the mounting box 601. A push plate 606 is slidably installed inside the mounting box 601, and the push plate 606 has an inclined surface that contacts the sliding plate 604. When the push plate 606 is subjected to a pushing force in the direction of the sliding plate 604, it will drive the sliding plate 604 to move and cause the push plate 606 to move downwards. At this time, the first spring 605 will be compressed. When the push plate 606 moves below the sliding plate 604, the sliding plate 604 will be reset under the action of the first spring 605.

[0029] It should be noted that after the first spring 605 is released, the first spring 605 will go through the following states:

[0030] Release phase: When the compressive force on the first spring 605 suddenly disappears or decreases, the first spring 605 will quickly return to its uncompressed state.

[0031] Overstretching phase: Due to the kinetic energy during release, the first spring 605 will exceed its original uncompressed length.

[0032] Oscillation phase: After overextension, the first spring 605 will oscillate back and forth near its natural length, with the amplitude gradually decreasing.

[0033] Stable phase: After several oscillations, the spring eventually stabilizes at its original length.

[0034] Therefore, when the first spring 605 is released, during the overextension phase of the first spring 605, the slide plate 604 will be misaligned with the flow hole 603. At this time, the lubricating oil inside the oil tank 504 will pass through the flow hole 603 and enter the oil supply ring 502.

[0035] The mounting box 601 is fixedly mounted with a nut 607, and a transmission rod 608 is threadedly connected to the nut 607. The transmission rod 608 passes through one side of the mounting box 601 and extends into the interior of the mounting box 601. A connecting plate 609 is rotatably mounted on the transmission rod 608, and a guide rod 610 is slidably mounted on the connecting plate 609. The guide rod 610 is fixedly connected to a push plate 606. A second spring 611 is fixedly mounted between the push plate 606 and the connecting plate 609. Under the action of the second spring 611, when the push plate 606 moves to below the slide plate 604, the push plate 606 will return to a state flush with the slide plate 604. The mounting box 601 and the transmission rod 608 are connected to a one-way transmission assembly that drives the transmission rod 608 to rotate in one direction according to the lifting state of the screw sleeve 203. The unidirectional transmission assembly allows the screw sleeve 203 to move up or down along the lead screw 2, which in turn drives the transmission rod 608 to rotate in one direction. The unidirectional rotation of the transmission rod 608 then drives the push plate 606 to move.

[0036] Furthermore, the one-way transmission assembly includes a transmission shaft 612 fixedly mounted on the transmission rod 608, a drive rod 613 rotatably mounted on the threaded sleeve 203, a first connecting plate 616 fixedly mounted on the transmission shaft 612, multiple drive columns 617 fixedly mounted on the first connecting plate 616, a second connecting plate 618 fixedly mounted on the drive rod 613, multiple first push blocks 619 rotatably mounted on the second connecting plate 618, and multiple first limit blocks 620 fixedly mounted on it. When the drive rod 613 rotates in the forward direction, it will drive the first push blocks 619 to rotate. Since the first push block 619 is located between the drive columns 617, and the first push block 619 will rotate after contacting the drive column 617, and the rotation of the first push block 619 in this direction is blocked by the first limit block 620, the first push block 619 can drive the first connecting plate 616 to rotate. When the drive rod 613 rotates in the opposite direction, the first push block 619 will rotate after contacting the drive column 617, thus preventing it from driving the first connecting plate 616 to rotate. A torsion spring is fixedly installed between the first push block 619 and the second connecting plate 618. The torsion spring allows the first push block 619 to automatically reset when it is not affected by external force.

[0037] It is worth noting that a roller 626 is fixedly mounted on the drive rod 613, and a friction strip 627 is fixedly mounted on the frame 1, with the roller 626 abutting against one side of the friction strip 627. The friction between the roller 626 and the friction strip 627 causes the roller 626, which moves with the threaded sleeve 203, to rotate. Furthermore, a speed reduction mechanism can be added between the drive rod 613 and the roller 626, allowing for lubrication of the threaded sleeve 203 after a long stroke.

[0038] The working principle of this embodiment is as follows: the friction between the roller 626 and the friction strip 627 causes the roller 626, which moves up and down with the screw sleeve 203, to rotate, thereby causing the drive rod 613 to rotate. When the drive rod 613 rotates in the forward direction, it will drive the first push block 619 to rotate. Since the first push block 619 is located between the drive columns 617, and the first push block 619 will be pushed to rotate after contacting the drive column 617, the rotation of the first push block 619 in this direction is blocked by the first limit block 620. Thus, the first push block 619 can drive the first connecting plate 616 to rotate. When the drive rod 613 rotates in the reverse direction, the first push block 619 will rotate after contacting the drive column 617, thus preventing the first connecting plate 616 from rotating. The screw sleeve 203 can drive the transmission rod 608 to rotate in one direction when it rises or falls along the screw 2. Through the unidirectional rotation of the transmission rod 608, the push plate 606 can be moved. When the first spring 605 is released, during the overextension phase of the first spring 605, the slide plate 604 will be misaligned with the flow hole 603. At this time, the lubricating oil inside the oil tank 504 will pass through the flow hole 603 and enter the oil supply ring 502.

[0039] The above specific embodiments are merely several optional embodiments of this utility model. Based on the technical solution of this utility model and the relevant teachings of the above embodiments, those skilled in the art can make various alternative improvements and combinations to the above specific embodiments.

Claims

1. A self-lubricating lifting device for automatic bag sealing machine, comprising a rack (1) and a lead screw (2) rotatably installed on the rack (1), a motor (201) with an output shaft fixedly connected with the lead screw (2) is fixedly installed on the rack (1), and a threaded sleeve (203) is threadedly connected on the lead screw (2), characterized in that, Also includes: A lubrication module is fixedly installed on the screw sleeve (203). The lubrication module includes a hopper (5) fixedly installed on the screw sleeve (203). An oil supply ring (502) is fixedly installed on the hopper (5). An oil tank (504) is fixedly installed on the oil supply ring (502). A sealing mechanism (6) is installed between the oil tank (504) and the oil supply ring (502) to control the communication state between the oil tank (504) and the oil supply ring (502) according to the lifting distance of the screw sleeve (203).

2. The self-lubricating lifting device for an automatic bag sealing machine according to claim 1, characterized in that, The sealing mechanism (6) includes a mounting box (601) fixedly installed between the oil tank (504) and the oil supply ring (502). The two ends of the mounting box (601) are respectively connected to the oil tank (504) and the oil supply ring (502). A sealing plate (602) is fixedly installed inside the mounting box (601). A flow hole (603) is provided on the sealing plate (602). A sliding plate (604) is slidably installed inside the mounting box (601). A first spring (605) is fixedly installed between the sliding plate (604) and the mounting box (601). A push plate (606) is slidably installed inside the mounting box (601). The push plate (606) is provided with an inclined surface that contacts the sliding plate (604).

3. The self-lubricating lifting device for an automatic bag sealing machine according to claim 2, characterized in that, A nut (607) is fixedly installed on the mounting box (601). A transmission rod (608) is threadedly connected to the nut (607). The transmission rod (608) passes through one side of the mounting box (601) and extends into the interior of the mounting box (601). A connecting plate (609) is rotatably installed on the transmission rod (608). A guide rod (610) is slidably installed on the connecting plate (609). The guide rod (610) is fixedly connected to the push plate (606). A second spring (611) is fixedly installed between the push plate (606) and the connecting plate (609). A one-way transmission assembly is connected to the transmission rod (608) in the mounting box (601) to drive the transmission rod (608) to rotate in one direction according to the lifting state of the screw sleeve (203).

4. The self-lubricating lifting device for an automatic bag sealing machine according to claim 3, characterized in that, The unidirectional transmission assembly includes a transmission shaft (612) fixedly mounted on a transmission rod (608), an active rod (613) rotatably mounted on a threaded sleeve (203), a first connecting plate (616) fixedly mounted on the transmission shaft (612), a plurality of drive columns (617) fixedly mounted on the first connecting plate (616), a second connecting plate (618) fixedly mounted on the active rod (613), a plurality of first push blocks (619) rotatably mounted on the second connecting plate (618) and a plurality of first limit blocks (620) fixedly mounted thereon, and a torsion spring fixedly mounted between the first push blocks (619) and the second connecting plate (618).

5. The self-lubricating lifting device for an automatic bag sealing machine according to claim 4, characterized in that, A roller (626) is fixedly installed on the active rod (613), and a friction strip (627) is fixedly installed on the frame (1). The roller (626) abuts against one side of the friction strip (627).

6. The self-lubricating lifting device for an automatic bag sealing machine according to claim 5, characterized in that, A support base (202) is slidably mounted on the frame (1). The support base (202) is fixedly connected to the screw sleeve (203). A sealing mechanism (3) is fixedly mounted on the support base (202).

7. The self-lubricating lifting device for an automatic bag sealing machine according to claim 6, characterized in that, Telescopic tubes (4) are fixedly installed on both the upper and lower sides of the support base (202). The other end of the telescopic tube (4) is fixedly connected to the frame (1). The lead screw (2) is located inside the telescopic tube (4).

8. The self-lubricating lifting device for an automatic bag sealing machine according to claim 1, characterized in that, The hopper (5) is provided with a conical hole (501), and a plurality of oil nozzles (503) are fixedly installed on the oil conveying ring (502), with the oil nozzles (503) located inside the conical hole (501).

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