A double-top shaft tube synchronous positioning mechanism

Abstract

This utility model discloses a double-topped shaft tube synchronous positioning mechanism, including a positioning component, a fixed base, and a feeding component. The positioning component comprises a sliding shaft cylinder and a sliding base. The sliding base is installed on the right side of the fixed base, and the sliding shaft cylinder is slidably installed within the sliding base. The feeding component is installed on the left side of the fixed base. The beneficial effects of this utility model are: by pressing the cutting shaft with the sliding shaft cylinder, axial movement during the cutting process is effectively suppressed; the feeding component presses the paper tube end face circumferentially, eliminating workpiece displacement or vibration, ensuring a clean, burr-free cut, and providing rapid response, achieving good coordination and high efficiency.

Description

Technical Field

[0001] This utility model relates to the technical field of paper tube processing equipment, specifically to a double-top shaft tube synchronous positioning mechanism. Background Technology

[0002] Traditional pipe cutting machines rely solely on the spindle bearing to support the cutting shaft, resulting in poor positioning and significant axial movement during high-speed cutting (especially in long shaft systems), causing tool vibration and producing bevels or burrs on the cut.

[0003] Using mechanical claws for radial clamping: can easily damage thin paper tubes (such as those with a wall thickness of <3mm), and uneven clamping force can cause cutting deviation; single-end pneumatic clamping: does not restrain the free end of the paper tube, and the tube body moves slightly when the cutting force is applied, causing the cut to crack or have a stepped cross-section.

[0004] Existing equipment treats tool positioning and workpiece clamping as independent actions, lacking coordinated rigid reinforcement of the "tool-workpiece" system, resulting in an unobstructed path for the transmission of cutting vibrations. When cutting thin-walled paper tubes, both tool axis stability and full workpiece constraint are indispensable. Existing technologies struggle to balance both, leading to accuracy bottlenecks, yield losses, and low work efficiency. Utility Model Content

[0005] The present invention aims to solve the problems of poor coordination and low efficiency mentioned in the background art, and provides a double-top shaft tube synchronous positioning mechanism with good coordination and high efficiency.

[0006] A double-top shaft tube synchronous positioning mechanism includes a positioning component, a fixed base, and a top-feeding component. The positioning component includes a sliding shaft cylinder and a sliding base. The sliding base is installed on the right side of the fixed base, and the sliding shaft cylinder is slidably installed inside the sliding base. The top-feeding component is installed on the left side of the fixed base.

[0007] Under the precise guidance of the sliding seat, the working piston rod of the sliding shaft cylinder extends, and the working end of the sliding shaft cylinder moves linearly towards the cutting axis. The working end of the sliding shaft cylinder firmly presses against the cutting axis, greatly limiting any axial movement or vibration that may occur during the cutting process. This is a crucial step in ensuring cutting accuracy. The ejector assembly then operates, firmly pressing one end of the paper tube (the end closest to the cutting position), ensuring that the paper tube is reliably fixed during cutting and preventing movement or vibration due to cutting force. With the cutting axis precisely positioned and locked by the sliding shaft cylinder, and the paper tube firmly pressed by the ejector assembly, this double rigid fixation improves cutting accuracy, reduces vibration sources, and features a simple structure and quick operation. The fixed seat is used to mount the sliding shaft cylinder and the positioning assembly.

[0008] This design reduces the probability of paper tape breakage, achieving good synergy and high efficiency.

[0009] Preferably, a sliding shaft is slidably mounted inside the sliding seat, the sliding shaft passing through the left and right sides of the fixed seat, and the piston rod of the sliding shaft cylinder is connected to the sliding shaft. When the sliding shaft cylinder extends: the cylinder piston rod pushes out, the sliding shaft advances, and under the precise guidance of the sliding seat, the sliding shaft moves in a straight line towards the cutting axis, with the front end of the sliding shaft pressing against the cutting axis.

[0010] Preferably, the top feeding assembly includes a top feeding ring cylinder and a top feeding ring. Both the top feeding ring and the top feeding ring cylinder are mounted on the left side of the fixed base. There are two top feeding ring cylinders, and the top feeding ring is disposed between the two top feeding ring cylinders. When the piston rod of the top feeding cylinder extends, it pushes the top feeding ring towards the end of the paper tube closer to the cutting position, preventing the paper tube from moving.

[0011] Preferably, the left side of the fixing seat is provided with a push plate, which includes a U-shaped plate and two push plates. The two push plates and the U-shaped plate are integrally formed. The U-shaped plate is positioned between two top-feeding ring cylinders, and the push plates are connected to the piston rods of the top-feeding ring cylinders. The integrally formed design of the push plates and U-shaped plates facilitates the connection between the push plates and the top-feeding ring cylinders, resulting in a robust structure, convenient installation, and space saving. When the piston rod of the top-feeding ring cylinder extends, the push plate moves under the action of the piston rod, pressing the paper tube close to the cutting end and reliably fixing the paper tube.

[0012] Preferably, the U-shaped plate matches the top material ring, which is disposed within and connected to the U-shaped plate. Both the U-shaped plate and the top material ring have through holes that match the sliding shaft. The matching of the U-shaped plate and the top material ring facilitates the installation of the top material ring. The U-shaped plate connects the top material ring and fixes the push plate. The operation of the top material ring cylinder drives the push plate, which in turn drives the U-shaped plate forward, while the U-shaped plate drives the top material ring, creating a coordinated top material movement. The movement of the sliding shaft does not affect the movement of the U-shaped plate and the top material ring. After passing through the through hole, the sliding shaft presses the paper tube. This connection method allows the top material ring cylinder and the sliding shaft cylinder to work together to press the paper tube, increasing positioning stability.

[0013] Preferably, two limiting blocks are installed on the left end face of the fixed base, and the two limiting blocks are respectively disposed on both sides of the sliding base. The design of the limiting blocks effectively restricts the movement of the sliding shaft, reduces the wear of the sliding shaft, and extends the service life of key components.

[0014] The beneficial effects of this utility model are as follows:

[0015] The cutting shaft is rigidly pressed against the sliding shaft, which effectively suppresses axial movement during the cutting process. The top ring presses the paper tube end face in the full circumference, and the push plate presses it to prevent workpiece displacement or vibration, ensuring that the cut is flat and burr-free. The response is rapid, achieving the goal of good coordination and high efficiency. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of this utility model.

[0017] Figure 2 This is a cross-sectional view of the present invention.

[0018] Figure 3 This is a diagram of the initial state of this utility model.

[0019] Figure 4 This is a diagram showing the extended state of the sliding shaft.

[0020] Figure 5 This is a diagram showing the working state of this utility model.

[0021] 1. Sliding shaft cylinder; 2. Sliding seat; 3. Ejector ring cylinder; 4. Sliding shaft; 5. Ejector ring; 6. Push plate; 601. Push plate; 602. U-shaped plate; 7. Limiting block; 8. Fixed seat; 9. Through hole. Detailed Implementation

[0022] The present invention will be further described below with reference to specific embodiments, but the present invention is not limited to the embodiments.

[0023] In the description of this utility model, it should be noted that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer" and "vertical" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model 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. Therefore, they should not be construed as limitations on this utility model.

[0024] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; or they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0025] Furthermore, in the description of this utility model, unless otherwise stated, "multiple", "multiple groups", and "multiple roots" mean two or more.

[0026] Unless otherwise specified, the materials, instruments and methods used in the following embodiments are all conventional materials, instruments and methods in the art and can be obtained through commercial channels.

[0027] like Figure 1 , Figure 2As shown, a double-top shaft tube synchronous positioning mechanism includes a positioning component, a fixed base 8, and a top-feeding component. The positioning component includes a sliding shaft cylinder 1 and a sliding base 2. The sliding base 2 is installed on the right side of the fixed base 8, and the sliding shaft cylinder 1 is slidably installed inside the sliding base 2. The top-feeding component is installed on the left side of the fixed base 8.

[0028] A sliding shaft 4 is slidably installed inside the sliding seat 2. The sliding shaft 4 passes through the left and right sides of the fixed seat 8, and the piston rod of the sliding shaft cylinder 1 is connected to the sliding shaft 4.

[0029] The top material assembly includes a top material ring cylinder 3 and a top material ring 5. Both the top material ring 5 and the top material ring cylinder 3 are installed on the left side of the fixed base 8. There are two top material ring cylinders 3, and the top material ring 5 is disposed between the two top material ring cylinders 3.

[0030] The left side of the fixed base 8 is provided with a push plate 6. The push plate 6 includes a U-shaped plate 602 and two push plates 601. The two push plates 601 and the U-shaped plate 602 are integrally formed. The U-shaped plate 602 is set between the two top material ring cylinders 3. The push plate 601 is connected to the piston rod of the top material ring cylinder 3.

[0031] The U-shaped plate 602 is matched with the top material ring 5. The top material ring 5 is set inside the U-shaped plate 602 and connected to the U-shaped plate 602. Both the U-shaped plate 602 and the top material ring 5 have through holes 9 that match the sliding shaft 4.

[0032] Two limiting blocks 7 are installed on the left end face of the fixed seat 8, and the two limiting blocks 7 are respectively set on both sides of the sliding seat 2.

[0033] One embodiment of this utility model:

[0034] like Figure 3 As shown, in the initial / non-working state: Sliding shaft cylinder 1 retracts: This drives the sliding shaft 4 to move away from the cutting shaft, causing the working end of the sliding shaft 4 to disengage from the cutting shaft. The cutting shaft is in a free state. Ejector ring cylinder 3 retracts: This drives the push plate 6 and the ejector ring 5 to move simultaneously, causing the ejector ring 5 to disengage from the paper tube end face. The paper tube is in an unclamped state. At this time, neither the cutting shaft nor the paper tube is constrained by this mechanism, facilitating loading and unloading operations (loading new paper tubes, removing cut paper tubes) or equipment maintenance.

[0035] like Figure 4 As shown, in the positioning and cutting shaft stage: the sliding shaft cylinder 1 extends, the piston rod pushes out, the sliding shaft 4 advances through the through hole 9, the sliding shaft 4 moves in a straight line towards the cutting shaft, the sliding shaft 4 presses against the cutting shaft, and the working end of the sliding shaft 4 firmly presses against the cutting shaft, accurately positioning and locking the cutting shaft in the axial direction, which greatly limits the axial movement or vibration that may occur during the cutting process.

[0036] like Figure 5As shown, during the paper tube clamping stage: the top material ring cylinder 3 extends, the piston rod pushes out, the push plate 601 moves forward, the push plate 601 drives the U-shaped plate 602 to work, the U-shaped plate 602 in turn drives the top material ring 5 to move, the top material ring 5 presses the paper tube, the push plate 601 and the U-shaped plate 602 push the top material ring 5 forward, so that the end face of the top material ring 5 evenly and firmly presses the end of the paper tube near the cutting position, ensuring that the paper tube is reliably fixed during the cutting process and preventing it from moving, rotating or vibrating due to the cutting force.

[0037] like Figure 3 As shown, in the cutting end & reset phase: the cutter completes the cutting and retracts, the top ring cylinder 3 retracts, driving the push plate 601, U-shaped plate 602, and top ring 5 to move backward, releasing the pressure on the paper tube. The sliding shaft cylinder 1 retracts, driving the sliding shaft 4 to move backward, disengaging from the cutting shaft and releasing the lock on the cutting shaft. The mechanism fully returns to the initial / non-working state, allowing the cut paper tube to be safely removed and preparing for the next work cycle.

[0038] Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Anyone skilled in the art can make various modifications and alterations without departing from the spirit and scope of the present invention. Therefore, the scope of protection of the present invention should be determined by the claims.

Claims

1. A double top type shaft tube synchronous positioning mechanism, comprising a positioning assembly, a fixed seat (8) and a top material assembly, characterized in that, The positioning assembly includes a sliding shaft cylinder (1) and a sliding seat (2). The sliding seat (2) is installed on the right side of the fixed seat (8). The sliding shaft cylinder (1) is slidably installed inside the sliding seat (2). The top material assembly is installed on the left side of the fixed seat (8).

2. A dual-poppet shaft tube synchronous positioning mechanism according to claim 1, characterized in that, A sliding shaft (4) is slidably installed inside the sliding seat (2). The sliding shaft (4) passes through the left and right sides of the fixed seat (8). The piston rod of the sliding shaft cylinder (1) is connected to the sliding shaft (4).

3. A dual-poppet shaft tube synchronous positioning mechanism according to claim 2, characterized in that, The top material assembly includes a top material ring cylinder (3) and a top material ring (5). The top material ring (5) and the top material ring cylinder (3) are both installed on the left side of the fixed base (8). There are two top material ring cylinders (3), and the top material ring (5) is arranged between the two top material ring cylinders (3).

4. A dual-poppet shaft tube synchronous positioning mechanism according to claim 3, characterized in that, The left side of the fixed seat (8) is provided with a push plate (6). The push plate (6) includes a U-shaped plate (602) and two push plates (601). The two push plates (601) and the U-shaped plate (602) are integrally formed. The U-shaped plate (602) is arranged between two top material ring cylinders (3). The push plate (601) is connected to the piston rod of the top material ring cylinder (3).

5. A dual-poppet shaft tube synchronous positioning mechanism according to claim 4, characterized in that, The U-shaped plate (602) is matched with the top material ring (5). The top material ring (5) is set inside the U-shaped plate (602) and connected to the U-shaped plate (602). Both the U-shaped plate (602) and the top material ring (5) have through holes (9) that match the sliding shaft (4).

6. A dual-poppet shaft tube synchronous positioning mechanism according to claim 2, characterized in that, Two limiting blocks (7) are installed on the left end face of the fixed seat (8), and the two limiting blocks (7) are respectively set on both sides of the sliding seat (2).

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