Leakage stopping tool for oil cylinder of bale pressing machine

Abstract

The utility model provides a leakage stoppage tool for an oil cylinder of a bale press, which is mainly used for solving the technical problems of complicated disassembly, assembly and maintenance modes, low efficiency, high cost, high requirement on maintenance precision and the like of the existing large oil cylinder for leakage. The leakage stoppage tool comprises a mother disc assembly, a pressing disc assembly and a sealing assembly, the mother disc assembly comprises a first mother disc and a second mother disc, and the first mother disc and the second mother disc are buckled to form a first installation ring and are installed on the end face of the end, close to an oil pressure rod, of an oil cylinder; the pressure plate assembly comprises a first pressure plate and a second pressure plate, the first pressure plate and the second pressure plate are buckled to form a second mounting ring, and one end part of the second mounting ring is axially embedded into the first mounting ring; the sealing assembly comprises a first sealing piece and a second sealing piece, and the first sealing piece is installed in the annular groove to achieve radial sealing; the second sealing piece is used for being connected to the oil pressure rod in a sleeving mode and located in the first installation ring, and axial sealing is achieved. The tool is convenient to disassemble and assemble, and the oil pressure rod is not prone to being damaged.

Description

Technical Field

[0001] The utility model relates to a leak plugging tool for an oil cylinder, in particular to a leak plugging tool for an oil cylinder of a bag pressing machine. Background Art

[0002] A baler is a mechanical device used to press and pack materials. It usually uses a hydraulic device to provide the required pressure and power. The main function of the hydraulic device in the baler is to drive the hydraulic rod (piston) to apply high pressure to press the material into the required shape and size. For example, in the tobacco cellulose diacetate industry, the last packaging process mainly uses a baler to complete the pressing and packaging of the silk bales.

[0003] The oil cylinder on the baling machine is one of the most basic components of the hydraulic device. The hydraulic rod is the moving part in the oil cylinder, which is connected to the baling plate. The hydraulic rod drives the baling plate to reciprocate under the action of the hydraulic pump and the control valve, exerting pressure on the pressed material to complete the baling process.

[0004] The advantages of using hydraulic devices in baling machines include providing high pressure and precise control, adapting to different pressing requirements, and operating smoothly and reliably. During use, the hydraulic device needs to be regularly inspected and maintained to ensure its normal operation and safety. If the seals of the oil cylinder and the hydraulic rod leak during production, the hydraulic oil will flow out and contaminate the product, and the hydraulic pressure control accuracy will be reduced.

[0005] At present, once the seal leakage of the baling machine cylinder occurs in continuous production, emergency treatment is generally carried out first to ensure continuous production, and then disassembly and maintenance are carried out during the annual shutdown inspection. For large cylinders, a series of tasks may be required during disassembly and maintenance, such as disassembly of the baling plate, disassembly of the hydraulic rod, hoisting of the cylinder, discharge of the hydraulic oil, and replacement of the seal. The overall maintenance process is relatively cumbersome, the maintenance cost is high, and the efficiency is low. A long cycle will also affect production. In addition, the installation of the cylinder seal, the connection of the hydraulic rod and the baling plate are all high-precision installations. Therefore, the requirements for maintenance accuracy are very high. If the maintenance accuracy cannot meet the standards, it will affect the normal operation of the baling machine and even cause the risk of leakage again. Utility Model Content

[0006] The purpose of the utility model is to provide a leakage plugging tool for the oil cylinder of a baling machine, which is mainly used to solve the technical problems that the existing large oil cylinder leakage disassembly and maintenance methods are relatively cumbersome, inefficient, and costly, as well as the high requirements for maintenance precision.

[0007] In order to achieve the above purpose, the technical solution of the utility model is as follows:

[0008] A leak plugging tool for the oil cylinder of a bale pressing machine is used to be sleeved on the oil pressure rod and connected to the oil cylinder. The special features are:

[0009] It includes a mother plate assembly, a pressure plate assembly and a sealing assembly;

[0010] The master disc assembly includes a first master disc and a second master disc in an arc shape, which are buckled together to form a first mounting ring for mounting on an end surface of the oil cylinder close to the oil pressure rod; the inner diameter of the first mounting ring is larger than the diameter of the oil pressure rod, and an annular groove coaxial with the first mounting ring is provided at the end close to the oil cylinder;

[0011] The pressure plate assembly comprises a first pressure plate and a second pressure plate in an arc shape, which are buckled together to form a second mounting ring, one end of the second mounting ring is axially embedded in the first mounting ring, and the other end is provided with an annular flange, and a connecting piece is used to pass through the annular flange in the axial direction to connect the first mounting ring and the second mounting ring; the inner diameter of the second mounting ring is larger than the diameter of the hydraulic rod, and the outer diameter is a clearance fit with the inner diameter of the first mounting ring;

[0012] The sealing assembly includes a first sealing member and a second sealing member. The first sealing member is installed in the annular groove, and the axial dimension of the first sealing member is greater than the groove depth of the annular groove. The second sealing member is used to be sleeved on the hydraulic rod and is located between the first mounting ring and the hydraulic rod.

[0013] Furthermore, the first master disc and the second master disc are both semicircular ring structures, and the radial contact surfaces of the two when they are buckled are mutually matching step surfaces; the first master disc and the second master disc are respectively provided with corresponding first mounting holes along the axial direction at corresponding positions close to the step surfaces, and bolts are passed through the corresponding first mounting holes to connect the first master disc and the second master disc to form a first mounting ring.

[0014] Furthermore, a plurality of second mounting holes are evenly distributed in the circumferential direction on the first mounting ring, and bolts are passed through the corresponding second mounting holes to mount the first mounting ring on the end surface of the oil cylinder close to one end of the hydraulic rod.

[0015] Furthermore, the first pressure plate and the second pressure plate are both semi-circular ring structures; a plurality of third mounting holes are evenly distributed along the circumference of the annular flange, and a plurality of fourth mounting holes corresponding to the third mounting holes are provided on the first mounting ring; the connecting member adopts a screw rod that passes through the third mounting hole and the fourth mounting hole in sequence, and is fastened by a nut, thereby realizing the connection between the second mounting ring and the first mounting ring.

[0016] Furthermore, the inner diameter of the first mounting ring is 20 mm to 25 mm larger than the diameter of the hydraulic rod, and the inner diameter of the second mounting ring is 10 mm to 15 mm larger than the diameter of the hydraulic rod.

[0017] Furthermore, the first sealing member is a silicone pad, and its axial dimension is 3 to 5 mm greater than the groove depth of the annular groove;

[0018] The second sealing element is a nylon packing.

[0019] Furthermore, the clearance between the first mounting ring and the second mounting ring is 0.5 mm.

[0020] Furthermore, the second mounting hole and the third mounting hole are through holes, and the fourth mounting hole is a threaded hole.

[0021] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0022] 1. The leak plugging tool for the oil cylinder of the bagging machine provided by the utility model designs the master plate assembly as a first master plate and a second master plate that can be buckled, and designs the pressure plate assembly as a first pressure plate and a second pressure plate that can be buckled, which can ensure that when the oil cylinder and the oil pressure rod seal leak, the master plate assembly and the pressure plate assembly can be hugged to the oil pressure rod without disassembling the oil cylinder, and combined with the sealing assembly to achieve plugging of the oil cylinder leak. The tool is easy to disassemble and assemble, and will not cause damage to the end surface of the oil cylinder and the oil pressure rod, and the sealing performance of the plugging is also better.

[0023] 2. The leak plugging tooling for the oil cylinder of the baling machine provided by the utility model is easy to process and has low cost. At the same time, both the first seal and the second seal can be selected from affordable seals, thereby greatly reducing the overall leak plugging cost.

[0024] 3. The leak plugging tool for the oil cylinder of the baling machine provided by the utility model ensures that the reciprocating motion of the oil pressure rod is not affected after installation by reasonably designing the dimensions between the various components, thereby ensuring the normal operation of the baling machine.

[0025] 4. The leak plugging tool for the oil cylinder of the bag pressing machine provided by the utility model is suitable for oil pressure devices of different sizes and has a wide range of applications. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a three-dimensional structural schematic diagram of an embodiment of the utility model.

[0027] Figure 2 It is a schematic structural diagram of the first mounting ring in an embodiment of the utility model.

[0028] Figure 3 It is a schematic diagram of the connection state of the first mounting ring and the second mounting ring in an embodiment of the present utility model.

[0029] Figure 4 It is a schematic diagram of the structure of the embodiment of the utility model after being assembled with the oil cylinder and the oil pressure rod.

[0030] The reference numerals are as follows:

[0031] 1-hydraulic rod, 2-oil cylinder, 3-first mother disc, 4-second mother disc, 5-first mounting ring, 51-annular groove, 52-first mounting hole, 53-second mounting hole, 54-fourth mounting hole, 6-first pressure plate, 7-second pressure plate, 8-second mounting ring, 81-annular flange, 82-third mounting hole, 9-first seal, 10-second seal. DETAILED DESCRIPTION

[0032] The utility model provides a convenient tool to prevent the oil cylinder seal leakage on the oil pressure device of a large-scale bagging machine. The design concept of the tool is to use a clever and reasonable structural design to use the radial sealing gasket and the axial sealing packing at the leakage point to seal the leakage without disassembling the oil cylinder itself and the oil pressure rod. After the sealing, it will not affect the movement of the oil pressure rod. The use of this tool can conveniently and quickly solve the leakage failure of the equipment, thereby ensuring the smooth progress of production. The utility model is described in detail in conjunction with the accompanying drawings and specific embodiments.

[0033] Combination Figure 1 , Figure 2 , Figure 3 , Figure 4 As shown, this embodiment provides a leak plugging tool for the oil cylinder of a bag pressing machine, comprising a mother plate assembly, a pressure plate assembly and a sealing assembly. The tool is sleeved on the oil pressure rod 1 and connected to the oil cylinder 2 when in use.

[0034] The master disc assembly includes a first master disc 3 and a second master disc 4 in an arc shape, which are buckled together to form a first mounting ring 5. In this embodiment, the first master disc 3 and the second master disc 4 are both semicircular ring structures, and the radial contact surfaces of the two master discs 3 and 4 are step surfaces that match each other when they are buckled together; the first master disc 3 and the second master disc 4 are respectively provided with corresponding first mounting holes 52 in the axial direction at corresponding positions close to the step surfaces, and two hexagon socket bolts are passed through the corresponding first mounting holes 52 to connect the first master disc 3 and the second master disc 4 to form a first mounting ring 5.

[0035] The first mounting ring 5 has a plurality of second mounting holes 53 evenly distributed along the circumferential direction. The second mounting holes 53 are through holes. External hexagonal bolts are passed through the corresponding second mounting holes 53 to mount the first mounting ring 5 on the end surface of the oil cylinder 2 near one end of the hydraulic rod 1 .

[0036] The inner diameter of the first mounting ring 5 is 20mm-25mm larger than the diameter of the hydraulic rod 1; the end of the first mounting ring 5 close to the cylinder 2 is provided with an annular groove 51 coaxial therewith, the groove depth of the annular groove 51 is 3mm, and the outer ring surface size of the annular groove 51 is 20mm larger than the inner diameter of the first mounting ring 5.

[0037] The pressure plate assembly includes an arc-shaped first pressure plate 6 and a second pressure plate 7, which are buckled to form a second mounting ring 8. In this embodiment, the first pressure plate 6 and the second pressure plate 7 are both semi-circular ring structures. One end of the second mounting ring 8 is axially embedded in the first mounting ring 5, and the other end is provided with an annular flange 81, and a plurality of third mounting holes 82 are evenly distributed along the circumferential direction on the annular flange 81. The first mounting ring 5 is provided with a plurality of fourth mounting holes 54 corresponding to the third mounting holes 82, wherein the third mounting holes 82 are through holes, and the fourth mounting holes 54 are threaded holes. The screw rod is used to sequentially pass through the third mounting holes 82 and the fourth mounting holes 54 to realize the connection between the first mounting ring 5 and the second mounting ring 8.

[0038] The inner diameter of the second mounting ring 8 is 10mm-15mm larger than the diameter of the hydraulic rod 1, and the outer diameter is clearance-matched with the inner diameter of the first mounting ring 5, that is, there is clearance-matched between the first mounting ring 5 and the second mounting ring 8, and the clearance between the two is 0.5mm.

[0039] The sealing assembly includes a first sealing member 9 and a second sealing member 10, wherein the first sealing member 9 is a silicone pad and is installed in the annular groove 51. The axial dimension of the first sealing member 9 is 3-5 mm greater than the groove depth of the annular groove 51.

[0040] The second sealing member 10 is a nylon packing, which has good sealing performance and low cost. The nylon packing is used to be sleeved on the hydraulic rod 1 and is located between the first mounting ring 5 and the hydraulic rod 1.

[0041] The utility model can realize fast installation, efficient plugging, no need to modify the original oil hydraulic equipment, no need to disassemble the original oil cylinder, oil hydraulic rod, and pressure plate, and does not affect the reciprocating motion of the oil hydraulic rod after installation. In addition, the structure of the tooling is also suitable for oil hydraulic devices of different sizes.

[0042] The following describes the use process of the leakage plugging tool of this embodiment in conjunction with the accompanying drawings.

[0043] First, the first master disc 3 and the second master disc 4 are clasped together on the hydraulic rod 1, and the first seal 9 is put on the hydraulic rod 1 and embedded in the annular groove 51; then the first master disc 3 and the second master disc 4 are buckled together, and the first master disc 3 and the second master disc 4 are connected to form an integral disc, namely the first mounting ring 5, using the hexagon socket bolts; then the first mounting ring 5 is connected to the oil cylinder 2 with bolts, and the degree of compression is adjusted to compress the first seal 9 on the end face of the oil cylinder 2. The inner diameter of the first seal 9 is slightly larger than the outer diameter of the hydraulic rod 1 to prevent the first seal 9 from being deviated due to friction caused by the movement of the hydraulic rod 1. Before the first seal 9 is placed, an incision needs to be cut, and the incision is separated and the first seal 9 is put on the hydraulic rod 1. When it is embedded in the annular groove 51, the incision generally avoids the incision where the contact surface of the first master disc 3 and the second master disc 4 is located. When the first master disc 3 and the second master disc 4 are clasped together on the hydraulic rod 1, soft protection (which can be a silicone lining or soft cloth) is required for the inside of the first master disc 3 and the second master disc 4. After the first master disc 3 and the second master disc 4 are basically installed and positioned, the soft protection is removed. This can effectively prevent the first master disc 3 and the second master disc 4 from causing damage to the hydraulic rod 1 due to collision during installation.

[0044] Secondly, wrap the nylon packing (i.e., the second seal 10) around the hydraulic rod 1, screw the screw into the second mounting hole 53 on the first mounting ring 5, and fold the first pressure plate 6 and the second pressure plate 7 onto the hydraulic rod 1 to form the second mounting ring 8, and insert the third mounting holes 82 on the second mounting ring 8 onto the screw, and use a nut to tighten the second mounting ring 8, and at the same time, press the nylon packing into the space between the first mounting ring 5 and the hydraulic rod to form an axial seal. The degree of tightening of the nylon packing can be adjusted by adjusting the nut. Similarly, when the first pressure plate 6 and the second pressure plate 7 are folded onto the hydraulic rod 1, soft protection (which can be a silicone lining or soft cloth) is required for the inside of the first pressure plate 6 and the second pressure plate 7. After the first pressure plate 6 and the second pressure plate 7 are basically positioned, the soft protection is removed. This can effectively prevent the first pressure plate 6 and the second pressure plate 7 from causing damage to the hydraulic rod 1 due to collision during installation.

[0045] Finally, after all the nuts are connected, the entire leak-proof tooling becomes a whole. After the tooling is installed at the leaking part of the oil cylinder, it completes the seal in both radial and axial directions without affecting the movement of the hydraulic rod 1. This form of sealing can effectively solve the oil leakage phenomenon at the oil cylinder 2 and the hydraulic rod 1, and prevent the hydraulic oil from flowing into the pressed product along the hydraulic rod 1.

[0046] The utility model can be turned by stainless steel forgings or stainless steel plates. The use of stainless steel can be beautiful, durable and rust-proof for a long time. After installation, the utility model can be online for a long time without disassembly; at the same time, the nylon packing can be easily replaced according to the situation, and different packings can be selected according to different leakage degrees and the packing compression degree can be adjusted.

[0047] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention are deemed to fall within the protection scope of the present invention.

Claims

1. A leak plugging tool for a hydraulic cylinder of a bagging machine, which is used to be sleeved on a hydraulic rod (1) and connected to the hydraulic cylinder (2). Features: It includes a mother plate assembly, a pressure plate assembly and a sealing assembly; The master disc assembly comprises a first master disc (3) and a second master disc (4) in the shape of an arc, which are buckled together to form a first mounting ring (5) for mounting on an end surface of the oil cylinder (2) close to the oil pressure rod (1); the inner diameter of the first mounting ring (5) is larger than the diameter of the oil pressure rod (1), and an annular groove (51) coaxial with the oil pressure rod (1) is provided at the end close to the oil cylinder (2); The pressure plate assembly comprises a first pressure plate (6) and a second pressure plate (7) in the shape of an arc, which are buckled together to form a second mounting ring (8), one end of the second mounting ring (8) is axially embedded in the first mounting ring (5), and the other end is provided with an annular flange (81), and a connecting piece is used to pass through the annular flange (81) in the axial direction to connect the first mounting ring (5) and the second mounting ring (8); the inner diameter of the second mounting ring (8) is larger than the diameter of the hydraulic rod (1), and the outer diameter is clearance-matched with the inner diameter of the first mounting ring (5); The sealing assembly comprises a first sealing member (9) and a second sealing member (10); the first sealing member (9) is installed in an annular groove (51); the axial dimension of the first sealing member (9) is greater than the groove depth of the annular groove (51); the second sealing member (10) is used for being sleeved on the oil pressure rod (1) and is located between the first mounting ring (5) and the oil pressure rod (1).

2. The leak plugging tool for the oil cylinder of the baling machine according to claim 1, Features: The first master disc (3) and the second master disc (4) are both semicircular ring structures, and when the two are buckled together, the radial contact surfaces are mutually matching step surfaces; the first master disc (3) and the second master disc (4) are respectively provided with corresponding first mounting holes (52) along the axial direction at corresponding positions close to the step surfaces, and bolts are passed through the corresponding first mounting holes (52) to connect the first master disc (3) and the second master disc (4) to form a first mounting ring (5).

3. The leak plugging tool for the oil cylinder of the bag pressing machine according to claim 2, Features: The first mounting ring (5) has a plurality of second mounting holes (53) evenly distributed along the circumferential direction, and bolts are passed through corresponding second mounting holes (53) to mount the first mounting ring (5) on an end surface of the oil cylinder (2) close to one end of the oil pressure rod (1).

4. The leak plugging tool for the oil cylinder of the baling machine according to claim 1, 2 or 3, Features: The first pressure plate (6) and the second pressure plate (7) are both semicircular ring structures; a plurality of third mounting holes (82) are evenly distributed along the circumference on the annular flange (81); a plurality of fourth mounting holes (54) corresponding to the third mounting holes (82) are provided on the first mounting ring (5); the connecting member is a screw rod, which passes through the third mounting hole (82) and the fourth mounting hole (54) in sequence, and is fastened by a nut to achieve the connection between the second mounting ring (8) and the first mounting ring (5).

5. The leak plugging tool for the oil cylinder of the bag pressing machine according to claim 4, Features: The inner diameter of the first mounting ring (5) is 20 mm to 25 mm larger than the diameter of the hydraulic rod (1), and the inner diameter of the second mounting ring (8) is 10 mm to 15 mm larger than the diameter of the hydraulic rod (1).

6. The leak plugging tool for the oil cylinder of the bag pressing machine according to claim 5, Features: The first sealing member (9) is a silicone pad, and its axial dimension is 3 to 5 mm greater than the groove depth of the annular groove (51); the second sealing member (10) is a nylon packing.

7. The leak plugging tool for the oil cylinder of the bag pressing machine according to claim 6, Features: The clearance between the first mounting ring (5) and the second mounting ring (8) is 0.5 mm.

8. The leak plugging tool for the oil cylinder of the bag pressing machine according to claim 3, Features: The second mounting hole (53) and the third mounting hole (82) are through holes, and the fourth mounting hole (54) is a threaded hole.

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