Rocker arm inflatable shaft assembly convenient to replace

Abstract

The utility model relates to the technical field of air expansion shafts, and discloses a rocker arm air expansion shaft assembly convenient to replace, which comprises a first mounting frame and a second mounting frame, an air expansion shaft body is arranged between the first mounting frame and the second mounting frame, the first mounting frame is provided with a universal bearing seat, and the second mounting frame is provided with a rocker arm. And a fixed frame assembly is fixedly mounted on the second mounting rack. According to the rocker arm air expansion shaft assembly convenient to replace, the inserting hole in the fixing block is in threaded connection with the plug pin, the plug pin abuts against the air expansion shaft body, rapid fixing and releasing of the right end of the air expansion shaft body can be achieved, when the air expansion shaft needs to be replaced, the limiting assembly is firstly removed, the plug pin only needs to be unscrewed, and the right end of the air expansion shaft body can be separated from constraint of the fixing block; and in cooperation with the rotation characteristic of the left-end universal bearing seat, the inflatable shaft body can horizontally move out of the fixing frame assembly around the left-end axis, disassembly can be completed without cooperation of two persons, the material changing efficiency is remarkably improved, and single-person assembly and disassembly are conducted.

Description

An easy-to-replace rocker arm air shaft assembly Technical Field

[0001] This utility model relates to the field of air shaft technology, specifically to an easily replaceable rocker arm air shaft assembly. Background Technology

[0002] In the printing process, when the roll material is used up, a new roll needs to be replaced quickly. To facilitate roll replacement, an air shaft is often used. An air shaft is a device that uses air to expand and fix the roll material, such as paper, film, and label paper. When air is inflated into the shaft, the air bladder or key on the shaft surface expands and fits tightly against the inner hole of the roll, achieving a stable fixation of the material. After deflating, the shaft surface contracts, allowing the roll to be quickly removed for easy material replacement. Through inflation and deflation operations, the air shaft can fix or disassemble the roll in a few seconds, significantly improving material change efficiency compared to traditional mechanical clamping methods.

[0003] Chinese Utility Model Patent Publication No. CN221459503U discloses an air shaft assembly. The specification of this air shaft assembly states that the air shaft is fixed to a certain position by an internal hexagonal head bolt provided at one end of a T-shaped bearing seat. The position of the air shaft can be adjusted by adjusting the T-shaped bearing seat using an adjusting block, thus facilitating the replacement of the paper tube and improving convenience. However, although this air shaft assembly can achieve position adjustment, it is not convenient for quick disassembly of the air shaft. During use, it is inconvenient for a single worker to quickly assemble and disassemble, resulting in poor disassembly and assembly efficiency and hindering its widespread use. Summary of the Invention

[0004] The technical problem to be solved by this utility model is to provide a rocker arm air shaft assembly that is easy to replace. It can effectively solve the problems in the prior art, such as the inconvenience of quick disassembly of the air shaft, the inconvenience of single-person quick disassembly and assembly during use, resulting in poor disassembly and assembly efficiency and the inconvenience of promotion and use.

[0005] The technical solution adopted by this utility model is: a replaceable rocker arm air shaft assembly, including a first mounting bracket and a second mounting bracket, an air shaft body is provided between the first mounting bracket and the second mounting bracket, a universal bearing seat is provided on the first mounting bracket, a fixing frame assembly is fixedly installed on the second mounting bracket, a first fixing component is inserted and installed at the end of the fixing frame assembly away from the second mounting bracket, a limit component is fixedly installed at the end of the fixing frame assembly and the first fixing component away from the air shaft body, and a second fixing component is fixedly installed at the end of the fixing frame assembly away from the second mounting bracket;

[0006] The fixing frame assembly includes a mounting frame 1, and an insert plate is fixedly mounted on one end of the mounting frame 1 near the first fixing component;

[0007] The first fixing component includes a second mounting frame, and a first insert frame is fixedly installed at one end of the second mounting frame near the insert plate. The first insert frame and the insert plate are plugged into each other, and a first mounting hole is provided at one end of the first insert frame.

[0008] Preferably, the second fixing component includes a fixing block, the fixing block having an insertion hole, and a pin threadedly connected to the fixing block through the insertion hole, the pin abutting against the air shaft body.

[0009] Through the above technical solution, the right end of the air shaft body can be quickly fixed and released by connecting the insertion hole and the pin threaded on the fixing block. When the air shaft needs to be replaced, the limiting component is released first. The pin is loosened and the right end of the air shaft body can be released from the constraint of the fixing block. With the rotation characteristics of the universal bearing seat at the left end, the air shaft body can be moved around the left end axis out of the fixing frame component. Disassembly can be completed without the cooperation of two people, which significantly improves the material changing efficiency.

[0010] Preferably, the fixing block has an adjustment groove 2 at one end near the mounting frame 1, and the mounting frame 1 has an adjustment groove 1. Both the adjustment groove 2 and the adjustment groove 1 are U-shaped structures.

[0011] Through the above technical solution, the "U"-shaped adjustment groove provides room for the translation of the air shaft body. During installation, the relative positions of the fixing block and the mounting frame can be adjusted through adjustment groove one and adjustment groove two to ensure the coaxiality of the air shaft body and the universal bearing seat. During disassembly, the right end of the air shaft body can be translated along the direction of the adjustment groove to avoid interference with the fixing frame assembly. With the rotation of the universal bearing seat, a single-end loading and unloading mode with one end fixed and the other end translated can be realized, which can facilitate single-person installation and disassembly.

[0012] Preferably, the second mounting frame is fixedly mounted at the end away from the first mounting frame, and the first mounting frame is threadedly connected to a fixing pin at the end away from the insert plate. The fixing pin passes through the second mounting frame and extends into the interior of the first mounting frame.

[0013] Through the above technical solution, by cooperating with the mounting frame 1, the insert frame 2 and the fixing pin, during installation, the insert frame 2 can be placed close to the mounting frame 1, and then the fixing pin passes through the mounting frame 1 and the insert frame 2 to achieve the fixing of one side of the first fixing component.

[0014] Preferably, the limiting component includes a fixing plate, one end of which is provided with four identical bolts. Two bolts pass through the fixing plate and extend into the interior of the mounting frame, while the other two bolts pass through the fixing plate and the mounting hole and extend into the interior of the insert plate.

[0015] With the above technical solution, four bolts fix the fixing plate to the mounting frame and the insert plate respectively. The bolts that pass through the mounting hole can limit the relative displacement between the insert frame and the insert plate. When disassembling, the bolts can be loosened to release the limit and allow the first fixing component to be pulled out along the insert plate.

[0016] Preferably, the fixing block has a second mounting hole, and the fixing block is fixedly installed with the fixing frame assembly through the second mounting hole.

[0017] The above technical solution, through the design of the second mounting hole, facilitates the fixing of the fixing block and the fixing frame assembly, preventing displacement during fixing and use, thus avoiding affecting normal use.

[0018] Preferably, the universal bearing housing has fixing holes at its four corners, and the first mounting bracket has adjustment holes with an elliptical cross-section.

[0019] Through the above technical solution, the design of the fixing hole allows the universal bearing seat to be fixed to the first mounting bracket when no adjustment is required, while the design of the adjustment hole facilitates the disassembly of the air shaft body.

[0020] Compared with the prior art, this utility model provides an easy-to-replace rocker arm air shaft assembly, which has the following advantages:

[0021] This replaceable rocker arm air shaft assembly uses a pin threaded connection between the insertion hole on the fixing block and the pin to press against the air shaft body, which can quickly fix and release the right end of the air shaft body. When the air shaft needs to be replaced, first release the limiting component, then simply loosen the pin, and the right end of the air shaft body can be released from the constraint of the fixing block. With the rotation characteristics of the universal bearing seat on the left end, the air shaft body can be moved around the left end axis out of the fixing frame assembly. Disassembly can be completed without the cooperation of two people, which significantly improves the material changing efficiency and facilitates single-person installation and disassembly. Attached Figure Description

[0022] Figure 1 is a schematic diagram of the three-dimensional structure of the present invention in its first state.

[0023] Figure 2 is a schematic diagram of the first state of the three-dimensional structure of this utility model.

[0024] Figure 3 is a three-dimensional structural diagram of the second state of this utility model;

[0025] Figure 4 is a schematic diagram of the disassembled structure of the first mounting bracket and universal bearing seat of this utility model;

[0026] Figure 5 is a schematic diagram of the installation structure of the second mounting bracket and fixing frame assembly of this utility model;

[0027] Figure 6 is a three-dimensional structural diagram of the second mounting bracket and the second fixing component of this utility model;

[0028] Figure 7 is a schematic diagram of the disassembled structure of the first fixing component and the second fixing component of this utility model;

[0029] Figure 8 is a three-dimensional structural diagram of the first fixing component and the second fixing component of this utility model.

[0030] The components are as follows: 1. First mounting bracket; 2. Universal bearing seat; 3. Fixing hole; 4. Adjusting hole; 5. Air shaft body; 6. Second mounting bracket; 8. Fixing frame assembly; 801. Mounting frame one; 802. Adjusting groove one; 803. Fixing pin; 804. Insert plate; 9. First fixing assembly; 901. Mounting frame two; 902. Insert frame one; 903. Mounting hole one; 904. Insert frame two; 10. Limiting assembly; 1001. Fixing plate; 1002. Bolt; 11. Second fixing assembly; 1101. Fixing block; 1102. Adjusting groove two; 1103. Mounting hole two; 1104. Insertion hole; 12. Pin. Detailed Implementation

[0031] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0032] Example 1: As shown in Figures 1-8, the present invention provides a replaceable rocker arm air shaft assembly, including a first mounting bracket 1 and a second mounting bracket 6. An air shaft body 5 is disposed between the first mounting bracket 1 and the second mounting bracket 6. A universal bearing seat 2 is disposed on the first mounting bracket 1. A fixing frame assembly 8 is fixedly mounted on the second mounting bracket 6. A first fixing component 9 is inserted and mounted at one end of the fixing frame assembly 8 away from the second mounting bracket 6. A limit component 10 is fixedly mounted at one end of the fixing frame assembly 8 and the first fixing component 9 away from the air shaft body 5. A second fixing component 11 is fixedly mounted at one end of the fixing frame assembly 8 away from the second mounting bracket 6.

[0033] The fixed frame assembly 8 includes a mounting frame 801, and an insert plate 804 is fixedly mounted on one end of the mounting frame 801 near the first fixed assembly 9.

[0034] The first fixing component 9 includes a second mounting frame 901. A first insert frame 902 is fixedly installed on one end of the second mounting frame 901 near the insert plate 804. The first insert frame 902 and the insert plate 804 are plugged into each other. A first mounting hole 903 is provided on one end of the first insert frame 902.

[0035] Specifically, the second fixing component 11 includes a fixing block 1101, on which a socket 1104 is provided. A pin 12 is threadedly connected to the fixing block 1101 through the socket 1104. The pin 12 abuts against the air shaft body 5. The advantage is that by threading the pin 12 through the socket 1104 on the fixing block 1101, the pin 12 abuts against the air shaft body 5, which can realize the quick fixing and release of the right end of the air shaft body 5. When the air shaft needs to be replaced, the limiting component 10 is released first. The pin 12 is loosened, and the right end of the air shaft body 5 can be released from the constraint of the fixing block 1101. With the rotation characteristics of the universal bearing seat 2 at the left end, the air shaft body 5 can be moved around the left end axis out of the fixing frame component 8. Disassembly can be completed without the cooperation of two people, which significantly improves the material changing efficiency.

[0036] Specifically, the fixing block 1101 has an adjustment groove 2 1102 at one end near the mounting frame 1 801, and the mounting frame 1 801 has an adjustment groove 1 802. Both adjustment groove 2 1102 and adjustment groove 1 802 are U-shaped structures. The advantage is that the U-shaped adjustment groove provides room for the translation of the air shaft body 5. During installation, the relative position of the fixing block 1101 and the mounting frame 1 801 can be adjusted by adjusting groove 1 802 and adjustment groove 2 1102 to ensure the coaxiality of the air shaft body 5 and the universal bearing seat 2. During disassembly, the right end of the air shaft body 5 can be translated along the direction of the adjustment groove to avoid interference with the fixing frame assembly 8. With the rotation of the universal bearing seat 2, a single-end loading and unloading mode of fixing one end and translating the other end can be realized, which can facilitate single-person installation and disassembly.

[0037] Specifically, the end of the second mounting frame 901 away from the first mounting frame 902 is fixedly mounted with the second mounting frame 904, and the end of the first mounting frame 801 away from the insert plate 804 is threadedly connected with the fixing pin 803. The fixing pin 803 passes through the second mounting frame 904 and extends into the interior of the first mounting frame 801. The advantage is that, through the cooperation between the first mounting frame 801, the second mounting frame 904 and the fixing pin 803, during installation, the second mounting frame 904 can be close to the first mounting frame 801, and then the fixing pin 803 passes through the first mounting frame 801 and the second mounting frame 904 to achieve the fixation of one side of the first fixing component 9.

[0038] Example 2: As shown in Figures 2-8, this is an improvement on the previous example.

[0039] Specifically, the limiting component 10 includes a fixing plate 1001. A bolt 1002 is provided through one end of the fixing plate 1001. There are four identical bolts 1002. Two bolts 1002 pass through the fixing plate 1001 and extend into the interior of the mounting frame 801. The other two bolts 1002 pass through the fixing plate 1001 and the mounting hole 903 and extend into the interior of the insert plate 804. The advantage is that the four bolts 1002 fix the fixing plate 1001 to the mounting frame 801 and the insert plate 804 respectively. The bolts 1002 passing through the mounting hole 903 can limit the relative displacement between the insert frame 902 and the insert plate 804. When disassembling, the limiting can be released by loosening the bolts 1002, so that the first fixing component 9 can be pulled out along the insert plate 804.

[0040] Specifically, the fixing block 1101 is provided with a second mounting hole 1103. The fixing block 1101 is fixedly installed with the fixing frame assembly 8 through the second mounting hole 1103. The advantage is that the design of the second mounting hole 1103 makes it easy to fix the fixing block 1101 and the fixing frame assembly 8, so that the two can avoid displacement during fixing and use, thus affecting normal use.

[0041] Specifically, the universal bearing housing 2 has fixing holes 3 at its four corners, and the first mounting bracket 1 has adjustment holes 4. The adjustment holes 4 have an elliptical cross-section. The advantage is that, through the design of the fixing holes 3, when no adjustment is needed, the universal bearing housing 2 and the first mounting bracket 1 can be fixed through the fixing holes 3. The design of the adjustment holes 4 makes it easy to disassemble the air shaft body 5.

[0042] Working principle: During use, the air shaft body 5 is quickly fixed and released by the threaded connection between the insertion hole 1104 on the fixing block 1101 and the pin 12. The pin 12 abuts against the air shaft body 5. When the air shaft needs to be replaced, first release the limiting component 10, then simply loosen the pin 12. The right end of the air shaft body 5 can then be released from the constraint of the fixing block 1101. With the rotation characteristics of the universal bearing seat 2 at the left end, the air shaft body 5 can be moved horizontally around the left end axis out of the fixing frame component 8. Disassembly can be completed without the need for two people. Significantly improving material changing efficiency, the "U"-shaped adjustment groove provides space for the translation of the air shaft body 5. During installation, the relative positions of the fixing block 1101 and the mounting frame 801 can be adjusted through adjustment groove 1 802 and adjustment groove 2 1102 to ensure the coaxiality of the air shaft body 5 and the universal bearing seat 2. During disassembly, the right end of the air shaft body 5 can be translated along the direction of the adjustment groove to avoid interference with the fixing frame assembly 8. Combined with the rotation of the universal bearing seat 2, a single-end loading and unloading mode with one end fixed and the other end translated can be realized, which facilitates single-end loading and unloading. The installation and disassembly are achieved through the cooperation between the mounting frame 801, the insert frame 904, and the fixing pin 803. During installation, the insert frame 904 is placed close to the mounting frame 801, and then the fixing pin 803 passes through the mounting frame 801 and the insert frame 904 to fix one side of the first fixing component 9. Four bolts 1002 fix the fixing plate 1001 to the mounting frame 801 and the insert plate 804 respectively. The bolts 1002 that pass through the mounting hole 903 can limit the relative position of the insert frame 902 and the insert plate 804. When disassembling, loosening bolt 1002 releases the limit, allowing the first fixing component 9 to be pulled out along the insert plate 804. The design of mounting hole 2 1103 facilitates the fixing of fixing block 1101 and fixing frame component 8, preventing displacement during fixing and use, thus affecting normal use. The design of fixing hole 3 allows for the fixing of universal bearing seat 2 and first mounting bracket 1 when no adjustment is needed. The design of adjustment hole 4 facilitates the disassembly of air shaft body 5.

[0043] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A replaceable rocker arm air shaft assembly, comprising a first mounting bracket (1) and a second mounting bracket (6), wherein an air shaft body (5) is disposed between the first mounting bracket (1) and the second mounting bracket (6), characterized in that: The first mounting bracket (1) is provided with a universal bearing seat (2), and a fixing frame assembly (8) is fixedly mounted on the second mounting bracket (6). A first fixing component (9) is inserted and mounted on the end of the fixing frame assembly (8) away from the second mounting bracket (6). A limit component (10) is fixedly mounted on the end of the fixing frame assembly (8) and the first fixing component (9) away from the air shaft body (5), and a second fixing component (11) is fixedly mounted on the end of the fixing frame assembly (8) away from the second mounting bracket (6). The fixed frame assembly (8) includes a first mounting frame (801), and a plug plate (804) is fixedly installed at one end of the first mounting frame (801) near the first fixed assembly (9); the first fixed assembly (9) includes a second mounting frame (901), and a first plug frame (902) is fixedly installed at one end of the second mounting frame (901) near the plug plate (804). The first plug frame (902) and the plug plate (804) are plugged together, and a first mounting hole (903) is provided at one end of the first plug frame (902).

2. The replaceable rocker arm air shaft assembly according to claim 1, characterized in that: The second fixing component (11) includes a fixing block (1101), on which a socket (1104) is provided. A pin (12) is threadedly connected to the fixing block (1101) through the socket (1104), and the pin (12) abuts against the air shaft body (5).

3. The replaceable rocker arm air shaft assembly according to claim 2, characterized in that: The fixing block (1101) has an adjustment groove 2 (1102) at one end near the mounting frame 1 (801), and the mounting frame 1 (801) has an adjustment groove 1 (802). Both the adjustment groove 2 (1102) and the adjustment groove 1 (802) are U-shaped structures.

4. The replaceable rocker arm air shaft assembly according to claim 1, characterized in that: The second mounting frame (901) is fixedly mounted with a second mounting frame (904) at one end away from the first mounting frame (902). The first mounting frame (801) is threadedly connected with a fixing pin (803) at one end away from the insert plate (804). The fixing pin (803) passes through the second mounting frame (904) and extends into the interior of the first mounting frame (801).

5. The replaceable rocker arm air shaft assembly according to claim 1, characterized in that: The limiting component (10) includes a fixing plate (1001), one end of which is provided with a bolt (1002). There are four identical bolts (1002). Two bolts (1002) pass through the fixing plate (1001) and extend into the interior of the mounting frame (801). The other two bolts (1002) pass through the fixing plate (1001) and the mounting hole (903) and extend into the interior of the insert plate (804).

6. The replaceable rocker arm air shaft assembly according to claim 2, characterized in that: The fixing block (1101) has a second mounting hole (1103), and the fixing block (1101) is fixedly installed with the fixing frame assembly (8) through the second mounting hole (1103).

7. The replaceable rocker arm air shaft assembly according to claim 1, characterized in that: The universal bearing seat (2) has fixing holes (3) at its four corners, and the first mounting bracket (1) has adjustment holes (4). The cross-section of the adjustment holes (4) is elliptical.

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