Height bending machine oil cylinder convenient to clean

Abstract

The utility model belongs to the technical field of oil cylinders, and discloses a convenient-to-clean oil cylinder for a high-height bending machine, which comprises an oil cylinder body, an oil cylinder cover and an oil cylinder cover, the sealing assembly comprises a hard sealing bin and a flexible sealing column, the hard sealing bin detachably wraps the outer side of the cylinder body, the flexible sealing column comprises a flexible telescopic pipe, connecting rings are fixedly connected to the two ends of the flexible telescopic pipe, the piston rod is sleeved with the flexible telescopic pipe and the connecting rings, and the connecting rings are fixedly connected to the two ends of the flexible telescopic pipe. One connecting ring is detachably connected with the hard sealing bin; the connector is detachably connected with the other connecting ring, and the connector is detachably connected to the end, away from the cylinder body, of the piston rod. By changing the connecting mode of the flexible telescopic pipe, the fracture probability of the flexible telescopic pipe can be reduced, the service life of the flexible telescopic pipe is prolonged, and the better oil stain and dust prevention effect is achieved.

Description

Technical Field

[0001] The utility model belongs to the technical field of oil cylinders, and particularly relates to an oil cylinder for a height bending machine which is convenient to clean. Background Art

[0002] Bending machines are divided into manual bending machines, hydraulic bending machines and numerical control bending machines. Manual bending machines are further divided into mechanical manual bending machines and electric manual bending machines. Hydraulic bending machines can be further divided into: torsion shaft synchronization, machine - liquid synchronization, and electro - hydraulic synchronization according to the synchronization method. Hydraulic bending machines can be further divided into: up - acting type and down - acting type according to the movement method.

[0003] Hydraulic bending machines mainly use hydraulic cylinders as the driving method. Existing bending machines need to regularly maintain their components, including cleaning the hydraulic cylinder. Most of the existing hydraulic cylinders for bending machines have an exposed structure, and it is rather troublesome to disassemble the whole hydraulic cylinder for cleaning and maintenance.

[0004] In order to solve the above problems, the existing patent with the publication number CN212563912U discloses an oil cylinder for a height bending machine which is convenient to clean, including an oil cylinder body, a sealing structure and a connecting structure. The oil cylinder body includes a cylinder block and a piston rod; the sealing structure includes a hard sealing chamber and a flexible sealing column. The flexible sealing column includes a first connecting ring and a second connecting ring at both ends. Between the first connecting ring and the second connecting ring, there is a telescopic tube. The middle of the telescopic tube is a disconnected structure. At the disconnected part of the telescopic tube, there is a fixed flexible connecting strip, and a reusable rubber strip is arranged between the flexible connecting strips.

[0005] In the above solution, the hard sealing chamber is coated on the outside of the cylinder block, and the flexible sealing column is sleeved on the outside of the piston rod. The flexible sealing column sleeved the piston rod with the first connecting ring and the second connecting ring, and the upper end of the first connecting ring is adhered to the lower end of the hard sealing chamber, the lower end of the second connecting ring is adhered to the lower end of the arc - shaped connecting plate. Then the telescopic tube is sleeved on the piston rod, and the upper and lower ends of the telescopic tube are respectively adhered to the first connecting ring and the second connecting ring. Finally, the flexible connecting strips are adhered, so as to seal the piston rod. And the telescopic tube will expand and contract with the expansion and contraction of the piston rod, without affecting the expansion and contraction of the piston rod. Among them, because the telescopic tube expands and contracts with the expansion and contraction of the piston rod, over time, the adhesion parts between the upper and lower ends of the telescopic tube and the first connecting ring and the second connecting ring are easy to crack and separate, and the disconnected part of the telescopic tube is also easy to crack, which reduces the service life of the telescopic tube, and further reduces the anti - oil stain and dust ability of the telescopic tube. Content of the Utility Model

[0006] Aiming at the deficiencies of the prior art, the purpose of the present utility model is to provide an oil cylinder for a height bending machine that is easy to clean. By changing the connection method of the flexible telescopic tube, the probability of the flexible telescopic tube breaking can be reduced, the service life of the flexible telescopic tube can be increased, and a better effect of preventing oil stains and dust can be achieved.

[0007] The purpose of the present utility model can be achieved by the following technical solutions:

[0008] An oil cylinder for a height bending machine that is easy to clean, comprising:

[0009] An oil cylinder body, the oil cylinder body comprising a cylinder block and a piston rod;

[0010] A sealing assembly, the sealing assembly comprising a rigid sealing chamber and a flexible sealing column. The rigid sealing chamber is detachably wrapped outside the cylinder block. The flexible sealing column comprises a flexible telescopic tube. Both ends of the flexible telescopic tube are fixedly connected with connecting rings. The flexible telescopic tube and the connecting rings are both sleeved on the piston rod, and one of the connecting rings is detachably connected to the rigid sealing chamber;

[0011] A connecting head, the connecting head is detachably connected to the other connecting ring, and the connecting head is detachably connected to one end of the piston rod far from the cylinder block.

[0012] The above technical solution, its principle and technical effect:

[0013] Fix the rigid sealing chamber on the outside of the cylinder block, then align the connecting ring with the piston rod, pass the piston rod through the flexible telescopic tube and then fixedly install it with the connecting head, and finally fixedly install the connecting ring with the rigid sealing chamber and the connecting head respectively. Such a connection method can reduce the probability of the flexible telescopic tube breaking and increase the service life of the flexible telescopic tube.

[0014] Further, the rigid sealing chamber comprises two semi-enclosing shells, the two semi-enclosing shells are wrapped outside the cylinder block, and the connection part of the two semi-enclosing shells is detachably connected.

[0015] Further, a first hole is opened on the side of the semi-enclosing shell, a first bolt is passed through the first hole, and a first nut is threadedly connected to the first bolt.

[0016] Further, an oil port communicating with the inside of the cylinder block is arranged on the circumferential side of the cylinder block, and a second hole for avoiding the oil port is opened on one of the semi-enclosing shells.

[0017] Further, threaded columns are fixedly connected to the semi-enclosing shell and one end of the connecting head close to the connecting ring. Third holes corresponding to the threaded columns are opened on the connecting ring, and the threaded columns pass through the third holes and are threadedly connected with second nuts.

[0018] Further, one end of the piston rod away from the cylinder block is fixedly connected with a plug block. A first jack is opened on the plug block. A slot and a second jack are opened on the connector head. The second jack is communicated with the slot. The plug block is inserted into the slot. A pin is inserted through the first jack and the second jack.

[0019] Further, it further includes a limiting sleeve. The limiting sleeve is sleeved on the pin. A fourth hole is opened on the limiting sleeve. A fifth hole is opened on the pin. A second bolt is inserted through the fourth hole and the fifth hole. A third nut is threadedly connected to the second bolt.

[0020] Further, one end of the cylinder block away from the piston rod is fixedly connected with an ear plate part. A first connection hole is opened on the ear plate part.

[0021] Further, a second connection hole is opened on the connector head.

[0022] Explanations for the nouns, conjunctions or adjectives involved in the above technical solutions are as follows:

[0023] Fixed connection means that after the parts or components are fixed, there is no relative movement connection. It is divided into two types: detachable connection and non-detachable connection.

[0024] (1) Detachable connection uses screws, splines, wedge pins, etc. to fix the parts together. This connection method can be disassembled during maintenance and will not damage the parts. However, the specifications of the connecting parts used must be correct (such as the length of bolts, keys, wedge pins), and they must be tightened properly.

[0025] (2) Non-detachable connection mainly refers to welding, riveting and mortise fitting, etc. Since it needs to be forged, sawed or oxy-cut to be disassembled during maintenance or replacement, the spare parts generally cannot be used twice. At the same time, during connection, attention should be paid to process quality, technical inspection and remedial measures (such as correction, polishing, etc.).

[0026] Threaded connection means a detachable connection that connects the connected parts into one body with threaded parts (or the threaded parts of the connected parts).

[0027] Sliding connection means that two objects are in contact but not fixed, and they can slide relative to each other.

[0028] Rotational connection means that the connection between parts allows the parts to rotate relative to each other.

[0029] Advantages of the present utility model:

[0030] By changing the connection method of the flexible telescopic tube, the cracking probability of the flexible telescopic tube can be reduced, the service life of the flexible telescopic tube can be increased, and it can play a better role in preventing oil stains and dust. Description of the Drawings

[0031] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, for those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0032] Figure 1 is the overall structural schematic diagram of the embodiment of the present invention;

[0033] Figure 2 is the structural schematic diagram of the oil cylinder body of the embodiment of the present invention;

[0034] Figure 3 is the structural schematic diagram of the hard seal chamber of the embodiment of the present invention;

[0035] Figure 4 is the structural schematic diagram of the flexible seal column of the embodiment of the present invention;

[0036] Figure 5 is the structural schematic diagram of the connector of the embodiment of the present invention. Detailed implementation manners

[0037] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention.

[0038] In the description of the present invention, it should be understood that the terms "opening", "upper", "lower", "thickness", "top", "middle", "length", "inner", "periphery", etc. indicating the orientation or position relationship are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the components or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be construed as a limitation to the present invention.

[0039] According to the concept of the present application, herein in combination with Figures 1 to 5To describe an embodiment of an oil cylinder for a height bending machine that is convenient for cleaning. Specifically, the oil cylinder for a height bending machine that is convenient for cleaning is configured as a split structure, which has components such as an oil cylinder body 1 and a sealing assembly 2. Through the mutual cooperation of structures such as the cylinder block 11, the piston rod 12, the hard sealing chamber 21, the flexible sealing column 22, and the connecting head 3, the hard sealing chamber 21 is fixedly installed on the outside of the cylinder block 11, then the connecting ring 222 is aligned with the piston rod 12, the piston rod 12 passes through the flexible telescopic tube 221 and is fixedly installed with the connecting head 3, and finally the connecting ring 222 is respectively fixedly installed with the hard sealing chamber 21 and the connecting head 3. Such a connection method can reduce the probability of the flexible telescopic tube 221 breaking and increase the service life of the flexible telescopic tube 221.

[0040] As Figures 1-5 shown, an oil cylinder for a height bending machine that is convenient for cleaning includes:

[0041] The oil cylinder body 1, and the oil cylinder body 1 includes a cylinder block 11 and a piston rod 12;

[0042] The sealing assembly 2, and the sealing assembly 2 includes a hard sealing chamber 21 and a flexible sealing column 22. The hard sealing chamber 21 is detachably wrapped on the outside of the cylinder block 11. The flexible sealing column 22 includes a flexible telescopic tube 221. Connecting rings 222 are fixedly connected to both ends of the flexible telescopic tube 221. The flexible telescopic tube 221 and the connecting rings 222 are both sleeved on the piston rod 12. One of the connecting rings 222 is detachably connected to the hard sealing chamber 21;

[0043] The connecting head 3, and the connecting head 3 is detachably connected to the other connecting ring 222, and the connecting head 3 is detachably connected to one end of the piston rod 12 far from the cylinder block 11.

[0044] When in use, the hard sealing chamber 21 is fixedly installed on the outside of the cylinder block 11, then the connecting ring 222 is aligned with the piston rod 12, the piston rod 12 passes through the flexible telescopic tube 221 and is fixedly installed with the connecting head 3, and finally the connecting ring 222 is respectively fixedly installed with the hard sealing chamber 21 and the connecting head 3. Such a connection structure can reduce the probability of the flexible telescopic tube 221 breaking and increase the service life of the flexible telescopic tube 221.

[0045] The flexible telescopic tube 221 in this application has a telescopic function and can extend and contract following the extension and contraction of the piston rod 12. The flexible telescopic tube 221 in this application includes, but is not limited to, corrugated tubes.

[0046] In an embodiment of the present utility model, the rigid sealing chamber 21 includes two semi-enclosing shells 211. The two semi-enclosing shells 211 are wrapped around the outside of the cylinder block 11, and the connection part of the two semi-enclosing shells 211 is detachably connected. Wrapping the two semi-enclosing shells 211 around the outside of the cylinder block 11 can better play the role of preventing oil stains and dust.

[0047] In an embodiment of the present utility model, a first hole is opened on the side of the semi-enclosing shell 211. A first bolt 4 is inserted through the first hole, and a first nut 41 is threadedly connected to the first bolt 4. Such a connection method is convenient for installation and disassembly.

[0048] In an embodiment of the present utility model, an oil port 111 communicating with the inside is provided on the circumferential side of the cylinder block 11. A second hole 2112 for avoiding the oil port 111 is opened on one of the semi-enclosing shells 211.

[0049] In an embodiment of the present utility model, threaded posts 5 are fixedly connected to the semi-enclosing shell 211 and one end of the connection head 3 close to the connection ring 222. A third hole corresponding to the threaded post 5 is opened on the connection ring 222, and the threaded post 5 passes through the third hole and is threadedly connected with a second nut 51. Such a connection method is convenient for installing the semi-enclosing shell 211 and the connection ring 222 together.

[0050] In an embodiment of the present utility model, a plug 121 is fixedly connected to the end of the piston rod 12 far from the cylinder block 11. A first jack 1211 is opened on the plug 121. A slot 31 and a second jack 32 are opened on the connection head 3. The second jack 32 communicates with the slot 31. The plug 121 is inserted into the slot 31, and a pin 6 is inserted through the first jack 1211 and the second jack 32. Such a connection method is convenient for installing the flexible telescopic tube 221 and the connection ring 222.

[0051] In an embodiment of the present utility model, a limit sleeve 7 is further included. The limit sleeve 7 is sleeved on the pin 6. A fourth hole is opened on the limit sleeve 7, and a fifth hole is opened on the pin 6. A second bolt 8 is inserted through the fourth hole and the fifth hole, and a third nut 81 is threadedly connected to the second bolt 8. Such a connection method can prevent the pin 6 from coming off and causing the separation of the piston rod 12 and the connection head 3.

[0052] In an embodiment of the present utility model, an ear plate part 112 is fixedly connected to the end of the cylinder block 11 far from the piston rod 12. A first connection hole 1121 is opened on the ear plate part 112. It is used for installation and connection with a bending machine.

[0053] In an embodiment of the present utility model, a second connection hole 33 is opened on the connection head 3. It is used for installation and connection with a bending machine.

[0054] The following further describes an oil cylinder for a height bending machine that is easy to clean in conjunction with the accompanying drawings and embodiments.

[0055] An oil cylinder for a height bending machine that is easy to clean includes:

[0056] An oil cylinder body 1, the oil cylinder body 1 includes a cylinder block 11 and a piston rod 12;

[0057] A sealing assembly 2, the sealing assembly 2 includes a rigid sealing chamber 21 and a flexible sealing column 22. The rigid sealing chamber 21 is detachably wrapped around the outside of the cylinder block 11. The flexible sealing column 22 includes a flexible telescopic tube 221. Both ends of the flexible telescopic tube 221 are fixedly connected with connecting rings 222. The flexible telescopic tube 221 and the connecting rings 222 are both sleeved on the piston rod 12. One of the connecting rings 222 is detachably connected to the rigid sealing chamber 21;

[0058] A connecting head 3, the connecting head 3 is detachably connected to the other connecting ring 222, and the connecting head 3 is detachably connected to the end of the piston rod 12 far from the cylinder block 11.

[0059] The rigid sealing chamber 21 includes two semi-enclosing shells 211. The two semi-enclosing shells 211 are wrapped around the outside of the cylinder block 11, and the connection part of the two semi-enclosing shells 211 is detachably connected.

[0060] A first hole is opened on the side of the semi-enclosing shell 211. A first bolt 4 is inserted through the first hole, and a first nut 41 is threadedly connected to the first bolt 4.

[0061] An oil port 111 communicating with the inside is arranged on the circumferential side of the cylinder block 11. A second hole 2112 for avoiding the oil port 111 is opened on one of the semi-enclosing shells 211.

[0062] Threaded posts 5 are fixedly connected to the semi-enclosing shell 211 and the end of the connecting head 3 close to the connecting ring 222. A third hole 2221 corresponding to the threaded post 5 is opened on the connecting ring 222, and the threaded post 5 passes through the third hole 2221 and is threadedly connected with a second nut 51.

[0063] An insertion block 121 is fixedly connected to the end of the piston rod 12 far from the cylinder block 11. A first insertion hole 1211 is opened on the insertion block 121. A slot 31 and a second insertion hole 32 are opened on the connecting head 3. The second insertion hole 32 communicates with the slot 31. The insertion block 121 is inserted into the slot 31, and a pin 6 is inserted through the first insertion hole 1211 and the second insertion hole 32.

[0064] It further includes a limit sleeve 7. The limit sleeve 7 is sleeved on the bolt 6. A fourth hole is provided on the limit sleeve 7, and a fifth hole is provided on the bolt 6. A second bolt 8 is inserted through the fourth hole and the fifth hole, and a third nut 81 is threadedly connected to the second bolt 8.

[0065] One end of the cylinder block 11 away from the piston rod 12 is fixedly connected with an ear plate member 112, and a first connection hole 1121 is provided on the ear plate member 112.

[0066] A second connection hole 33 is provided on the connection head 3.

[0067] In the description of this specification, the descriptions with reference to the terms "one embodiment", "example", "specific example", etc. mean that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0068] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. The above embodiments and the descriptions in the specification only illustrate the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements fall within the scope of the present invention claimed.

Claims

1. A hydraulic cylinder for a high-speed bending machine that is easy to clean, characterized in that: include: An oil cylinder body (1), the oil cylinder body (1) comprising a cylinder body (11) and a piston rod (12); A sealing assembly (2), the sealing assembly (2) comprising a hard sealing chamber (21) and a flexible sealing column (22), the hard sealing chamber (21) being detachably wrapped around the outer side of the cylinder body (11), the flexible sealing column (22) comprising a flexible telescopic tube (221), both ends of the flexible telescopic tube (221) being fixedly connected with connecting rings (222), the flexible telescopic tube (221) and the connecting ring (222) being both sleeved on the piston rod (12), and one of the connecting rings (222) being detachably connected to the hard sealing chamber (21); A connecting head (3), the connecting head (3) being detachably connected to another connecting ring (222), and the connecting head (3) being detachably connected to an end of the piston rod (12) away from the cylinder body (11).

2. The oil cylinder for a high-speed bending machine that is easy to clean according to claim 1 is characterized in that: The hard sealed chamber (21) comprises two semi-enclosed shells (211), the two semi-enclosed shells (211) are wrapped around the outside of the cylinder body (11), and the connection between the two semi-enclosed shells (211) is detachably connected.

3. The oil cylinder for a high-speed bending machine that is easy to clean according to claim 2 is characterized in that: A first hole is opened on the side of the semi-enclosed shell (211), a first bolt (4) is passed through the first hole, and a first nut (41) is threadedly connected to the first bolt (4).

4. The oil cylinder for a high-speed bending machine that is easy to clean according to claim 2 is characterized in that: The cylinder body (11) is provided with an oil port (111) on the peripheral side thereof and communicated with the interior thereof, and a second hole (2112) for avoiding the oil port (111) is provided on one of the semi-enclosed shells (211).

5. The oil cylinder for a high-speed bending machine that is easy to clean according to claim 2, characterized in that: A threaded column (5) is fixedly connected to the semi-enclosed shell (211) and to one end of the connecting head (3) close to the connecting ring (222); a third hole (2221) corresponding to the threaded column (5) is provided on the connecting ring (222); and the threaded column (5) passes through the third hole (2221) and is threadedly connected to a second nut (51).

6. The oil cylinder for a high-speed bending machine that is easy to clean according to claim 1, characterized in that: An insert block (121) is fixedly connected to one end of the piston rod (12) away from the cylinder body (11); a first plug hole (1211) is provided on the insert block (121); a slot (31) and a second plug hole (32) are provided on the connector (3); the second plug hole (32) is communicated with the slot (31); the insert block (121) is inserted into the slot (31); and a plug pin (6) is inserted into the first plug hole (1211) and the second plug hole (32).

7. The oil cylinder for a high-speed bending machine that is easy to clean according to claim 6, characterized in that: The invention also comprises a limiting sleeve (7), wherein the limiting sleeve (7) is sleeved on the latch (6), a fourth hole is formed on the limiting sleeve (7), a fifth hole is formed on the latch (6), a second bolt (8) is inserted into the fourth hole and the fifth hole (61), and a third nut (81) is threadedly connected to the second bolt (8).

8. The oil cylinder for a high-speed bending machine that is easy to clean according to claim 1, characterized in that: An end of the cylinder body (11) away from the piston rod (12) is fixedly connected to an ear plate component (112), and a first connecting hole (1121) is provided on the ear plate component (112).

9. The oil cylinder for a high-speed bending machine that is easy to clean according to claim 1, characterized in that: The connecting head (3) is provided with a second connecting hole (33).

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