Special tool for disassembling piston of throwing tail gas cylinder

Abstract

The utility model discloses a special tool for disassembling a piston of a throwing tail gas cylinder, which comprises two positioning seats arranged in a symmetrical structure, a semicircular positioning hole arranged on the positioning seats, and two fixing angles which are respectively arranged at the upper end and the lower end of the inner wall of the semicircular positioning hole and protrude inwards. The two positioning seats are combined to form a positioning frame with a circular hole, the positioning frame surrounds the outer side of a to-be-disassembled throwing tail gas cylinder piston through the circular hole formed by the two semicircular positioning holes, and the two ends of the to-be-disassembled throwing tail gas cylinder piston are subjected to limiting disassembly through the fixing corners. The problem that the piston of the throwing tail gas cylinder is difficult to disassemble can be solved, the structure is simple, operation is easy and convenient, and manufacturing cost is low.

Description

Technical Field

[0001] This utility model relates to the technical field of chemical fiber machinery manufacturing, specifically to a special tool for disassembling the piston of a tail-swing cylinder. Background Technology

[0002] During the production and operation of Barmag winding machines, mechanical parts gradually age over time. To meet energy conservation and consumption reduction requirements, parts are repaired by replacing internal components before being completely scrapped, and then tested to ensure their usability, thereby saving costs. One of the most frequently used and prominent components in Barmag winding machines is the cylinder, a mechanical component that converts compressed air pressure into mechanical energy through pneumatic transmission, driving the mechanism to perform linear reciprocating motion and oscillation. The cylinder mainly consists of a cylinder body, cylinder head, piston, drive shaft, and various sealing rings; its overall airtightness is extremely important during operation. Since the cylinder body wear has low repair value, cylinder maintenance mainly involves replacing the sealing rings.

[0003] The tail-swing cylinder, a crucial component in the operation of the Barmag winding machine, is undeniably valuable. During maintenance, it was discovered that replacing the internal seal of the cylinder head required disassembling the piston on the drive shaft. The piston is a component with a circular nylon outer shell and an internally embedded copper bushing. The copper bushing's hexagonal outer edge is embedded in the nylon shell, and its internal threads connect to the drive shaft's threads, reinforced with glue. While the stainless steel drive shaft can be secured with clamps during disassembly, the piston's circular shape makes it difficult to find a stress point, and the nylon material prevents the glue from being melted by high temperatures, thus creating a bottleneck in the repair. Upon observation, it was found that the piston's nylon outer shell has four grooves on each of its upper and lower surfaces. These points can be used as stress points for positioning and clamping before disassembly. However, since no specialized tools are currently available, a special tool needs to be made to achieve this disassembly. Summary of the Invention

[0004] In order to solve one or more technical problems existing in the prior art, the purpose of this application is to provide a special tool for disassembling the piston of the drift cylinder, which can solve the problem of the difficulty in disassembling the piston of the drift cylinder. It has a simple structure, is easy to operate, and has a low manufacturing cost.

[0005] To solve the aforementioned technical problems, this application adopts the following technical solution:

[0006] A special tool for disassembling a drift cylinder piston includes two symmetrically arranged positioning seats and a semi-circular positioning hole on the positioning seats. The inner walls of the semi-circular positioning holes are provided with two inwardly protruding fixing angles at both the upper and lower ends. The two positioning seats are combined to form a positioning frame with a circular hole. The positioning frame surrounds the drift cylinder piston to be disassembled through the circular hole formed by the two semi-circular positioning holes. The two ends of the drift cylinder piston to be disassembled are limited and disassembled by the fixing angles.

[0007] Preferably, the positioning seat includes symmetrically arranged clamping blocks, fixing holes provided on the clamping blocks, and detachable fasteners provided in the fixing holes. The clamping blocks are clamped and fixed to the outside of the tail-swing cylinder piston to be disassembled by the fasteners.

[0008] Preferably, the fixing hole is a threaded hole, and the fastener is a bolt structure.

[0009] Preferably, the fastener is an M5 internal hex bolt made of carbon steel.

[0010] Preferably, the positioning seat and the fixing angle are made of stainless steel plate.

[0011] Preferably, the clamping block is made of 8mm stainless steel plate, and the thickness of the fixing angle is 2mm.

[0012] Preferably, the two positioning seats are combined to form a square structure.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0014] This tool can conveniently, effectively, and quickly position the piston of the tail-swing cylinder to be disassembled and form a clamping fixture, thereby solving the problem of the difficulty in positioning and disassembling the piston of the tail-swing cylinder. The overall structure is simple, easy to operate, and low in manufacturing cost. It can improve the work efficiency of employees, reduce costs and increase efficiency, and at the same time cultivate employees' problem-solving ability. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the piston structure of the tail-swing cylinder to be disassembled in this utility model;

[0016] Figure 2 This is a schematic diagram of the clamping block in this utility model;

[0017] In the diagram: 1. Positioning seat; 2. Positioning frame; 3. Semi-circular positioning hole; 4. Fastener; 5. Fixing hole; 6. Fixing corner; 7. Clamping block. Detailed Implementation

[0018] The present application will now be further described in conjunction with the accompanying drawings and specific embodiments. It should be noted that, without conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0019] In the description of this application, it should be understood that the terms "upper", "lower", "left", "right", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0020] The terms "first," "second," etc., used in this application are used to distinguish similar objects and not to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that embodiments of this application can be implemented in orders other than those illustrated or described herein, and the objects distinguished by "first," "second," etc., are generally of the same class, without limiting the number of objects; for example, a first object can be one or more. Furthermore, in the specification and claims, "and / or" indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.

[0021] As in 1 and Figure 2 As shown, a special tool for disassembling a drift cylinder piston includes two symmetrically arranged positioning seats 1 and a semi-circular positioning hole 3 on the positioning seats 1. The upper and lower ends of the inner wall of the semi-circular positioning hole 3 are provided with two inwardly protruding fixing angles 6. The two positioning seats 1 are combined to form a positioning frame 2 with a circular hole. The positioning frame 2 surrounds the drift cylinder piston to be disassembled through the circular hole formed by the two semi-circular positioning holes 3. The two ends of the drift cylinder piston to be disassembled are limited and disassembled by the fixing angles 6.

[0022] In actual operation, two positioning seats 1 are installed from the side of the piston of the tail-end cylinder to be disassembled, so that the piston is located in the semi-circular positioning hole 3. At the same time, the fixing angles 6 at both ends are respectively engaged into the four grooves on the upper and lower surfaces of the piston nylon shell, thus forming a positioning frame 2 to limit and fix the piston. After the piston is fixed by the positioning frame 2, the radial direction of the piston can be limited by the semi-circular positioning hole 3, while the axial direction is limited by the fixing angles 6 on both sides. At the same time, the fixing angles 6 also limit the rotation direction of the piston. Then, the drive shaft of the tail-end cylinder is... When disassembling the piston, the drive shaft is fixed by a corresponding clamp, while the piston can be clamped and fixed by the positioning frame 2. For example, after clamping the positioning frame 2 with a bench vise, the drive shaft can be rotated and disassembled, thus solving the problem of difficult positioning and disassembly when the piston shell is made of round nylon material. This tool can conveniently, effectively and quickly position the piston of the tail-swing cylinder to be disassembled to form the clamping positioning frame 2. The overall structure is simple, easy to operate, and low in manufacturing cost. It can improve the work efficiency of employees, achieve the purpose of cost reduction and efficiency improvement, and at the same time cultivate employees' problem-solving ability.

[0023] A further improvement is that the positioning seat 1 includes symmetrically arranged clamping blocks 7, fixing holes 5 provided on the clamping blocks 7, and detachable fasteners 4 provided in the fixing holes 5. The clamping blocks 7 are clamped and fixed to the outside of the tail-swing cylinder piston to be disassembled by the fasteners 4.

[0024] When fixing the piston with the positioning seat 1, a one-piece structure results in high manufacturing costs and lacks effective clamping and fixing of the piston's upper and lower sides. Therefore, the positioning seat 1 is divided into two independent components by two symmetrical clamping blocks 7, which are connected by two fixing holes 5 and fasteners 4. After this improvement, the clamping blocks 7 can effectively clamp and fix the piston after fixing it again, thus improving the positioning effect of the piston during disassembly. The manufacturing difficulty of the clamping blocks 7 is also lower, and the required precision is less. The overall structure features a double-layer assembly design, which has strong load-bearing capacity, is simple to assemble, and is convenient for storage.

[0025] A further improvement is made in that the fixing hole 5 is a threaded hole, and the fastener 4 is a bolt structure; the fastener 4 is an M5 internal hex bolt made of carbon steel.

[0026] Fastener 4 is made of carbon steel M5 hex bolts with a strength of 10.9 grade, which are not easy to wear and effectively lock the frame structure.

[0027] A further improvement is made in that the positioning seat 1 and the fixing angle 6 are made of stainless steel plate; the clamping block 7 is made of 8mm stainless steel plate; and the thickness of the fixing angle 6 is 2mm.

[0028] The positioning base 1 and the fixing angle 6 are made of stainless steel plate, which is thick, sturdy, and durable. Especially when the clamping block 7 is made of 8mm stainless steel plate and the fixing angle 6 is 2mm thick, it is accurate and strong, can easily perform its function, and can be used for a long time.

[0029] A further improvement is that the two positioning seats 1 are combined to form a square structure.

[0030] After the two positioning seats 1 are combined, they form a 60mm*60mm square frame that can be held in one hand. For some piston parts that do not require much disassembly force, disassembly can be completed by holding the positioning frame 2 in place and then turning the drive shaft with a wrench.

[0031] A further improvement is that the head of the fixed angle 6 adopts a circular structure, and the surface of the stainless steel plate is also polished and deburred, and the right-angled edges are blunted to avoid scratching the operator during use.

[0032] For example, when disassembling a 40mm diameter drift cylinder piston, the special tool consists of four clamping blocks 7 made of 304 stainless steel plates. These four clamping blocks 7 can be combined to form two 60*60mm square frames. To effectively protect the 40mm diameter piston's circular nylon outer shell from damage, the combined hollow circle has a diameter of 40.5mm. This facilitates installation while ensuring the disassembly process is unaffected, reasonably avoiding the possibility of piston damage, deformation, or even breakage. Four 3.9*8mm fixing angles 6 extending towards the center are formed at both ends of the circle created by the semi-circular positioning holes 3. Two of the clamping blocks 7 each have an M6 unthreaded fixing hole 5, and the other two clamping blocks 7 each have an M5 threaded fixing hole 5. Two clamping blocks 7 with M6 threadless fixing holes 5 are positioned at the fixing angle 6 and locked into the four grooves on the piston nylon shell. Two more clamping blocks 7 with M5 fixing holes 5 are similarly locked into the four grooves on the lower part of the piston nylon shell, also at the fixing angle 6. Four M5 hex socket head cap screws are then used to connect and secure the piston from top to bottom, ultimately transforming its shape from round to square. This allows the piston shell to be securely held in place by the square frame of the special tool using clamps, thus enabling easy disassembly and separation of the piston and drive shaft. The special tool for disassembling the drift cylinder piston is made of stainless steel, making it durable. Its ingenious design, utilizing two layers of grooves, not only provides excellent protection for the piston shell but also reduces the stress on the fixing angle 6 of the special tool, preventing breakage. This structure is simple, practical, and inexpensive to assemble. Even if damaged, it can be repaired and reused.

[0033] The above embodiments are merely preferred embodiments of this application and should not be construed as limiting the scope of protection of this application. Any non-substantial changes and substitutions made by those skilled in the art based on this application shall fall within the scope of protection claimed by this application.

Claims

1. A special tool for disassembling the piston of a drift cylinder, characterized in that: It includes two symmetrically arranged positioning seats (1) and semi-circular positioning holes (3) on the positioning seats (1). The inner walls of the semi-circular positioning holes (3) are provided with two inwardly protruding fixing angles (6) at both the upper and lower ends. The two positioning seats (1) are combined to form a positioning frame (2) with a circular hole. The positioning frame (2) surrounds the piston of the tail-swing cylinder to be disassembled through the circular hole formed by the two semi-circular positioning holes (3). The two ends of the tail-swing cylinder piston to be disassembled are limited and disassembled by the fixing angles (6).

2. A special tool for disassembling a drift cylinder piston according to claim 1, characterized in that: The positioning seat (1) includes symmetrically arranged clamping blocks (7), fixing holes (5) provided on the clamping blocks (7), and detachable fasteners (4) provided in the fixing holes (5). The clamping blocks (7) are clamped and fixed to the outside of the tail-swing cylinder piston to be disassembled by the fasteners (4).

3. A special tool for disassembling a drift cylinder piston according to claim 2, characterized in that: The fixing hole (5) is a threaded hole, and the fastener (4) is a bolt structure.

4. A special tool for disassembling a drift cylinder piston according to claim 3, characterized in that: The fastener (4) is an M5 internal hex bolt made of carbon steel.

5. A special tool for disassembling a drift cylinder piston according to claim 2, characterized in that: The positioning seat (1) and the fixing angle (6) are made of stainless steel plate.

6. A special tool for disassembling a drift cylinder piston according to claim 5, characterized in that: The clamping block (7) is made of 8mm stainless steel plate, and the thickness of the fixing angle (6) is 2mm.

7. A special tool for disassembling a drift cylinder piston according to claim 1, characterized in that: The two positioning seats (1) are combined to form a square structure.

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