Automatic installation clamp for cylinder sleeve with small-diameter inner hole

Abstract

The utility model relates to the technical field of machining equipment, in particular to a small-diameter inner hole cylinder sleeve automatic installation clamp which comprises a supporting seat, an upper-layer installation plate and a lower-layer installation plate which are fixedly connected, and a gap is formed between the upper-layer installation plate and the lower-layer installation plate. A first pneumatic telescopic assembly is fixedly mounted on the lower-layer mounting plate, the movable end of the first pneumatic telescopic assembly is in sliding connection with the upper-layer mounting plate, and the end of the first pneumatic telescopic assembly is fixedly connected with the supporting seat; a second pneumatic telescopic assembly is fixedly arranged in the supporting seat and comprises a pull rod in sliding connection with the supporting seat, a notch is formed in the pull rod, a plurality of pressing plates are evenly distributed on the supporting seat around the axis of the pull rod, the top of each pressing plate is a pressing end capable of being connected with the hole wall of an inner hole of the cylinder sleeve in a clamped mode, and the bottom of each pressing plate is a stress end. The stress end is rotationally connected with the supporting seat, and a bayonet is fixedly arranged on the supporting seat and inserted into the notch; the clamp can stably clamp a small-diameter cylinder sleeve with an inner hole in the inner direction.

Description

Technical Field

[0001] The utility model relates to the technical field of machining equipment, in particular to an automatic mounting fixture for a cylinder sleeve with a small diameter inner hole. Background Art

[0002] The cylinder liner is a key component in any engine. Typically made of cast iron or aluminum alloy, it is installed inside the cylinder block. Its function is to provide a smooth working surface, allowing the piston to move smoothly within it, reducing friction and wear. The liner also seals the cylinder and dissipates heat. The proper assembly of the liner is crucial to the engine's operating efficiency.

[0003] During the processing and installation of cylinder liners, it is very important to select a suitable fixture. The materials of cylinder liners mainly include cast iron and aluminum alloy. During installation, a fixture is needed to clamp the cylinder liners. However, most existing fixtures clamp the outer circle of the cylinder liners, which are mostly suitable for large-diameter regular cylindrical cylinder liners. Small-diameter cylinder liners often have irregular shapes. For example, in the actual production process, the applicant needs to install a small-diameter cylinder liners such as Figure 1 As shown, an inner hole 11 is opened in the center of the cylinder liner 1 body, and an edge 12 protruding from the outer circle of the cylinder liner 1 body is integrally formed at the bottom of the cylinder liner 1 body, and the edge 12 is set to be relatively thin, so that the ordinary installation fixture for clamping the outer circle of the cylinder liner 1 cannot stably clamp the small-diameter cylinder liner 1 from the outside. Utility Model Content

[0004] The utility model provides an automatic mounting fixture for a small-diameter inner hole cylinder sleeve, which can solve the technical problem that the small-diameter cylinder sleeve is difficult to be stably clamped from the outside.

[0005] This application provides the following technical solutions:

[0006] An automatic installation fixture for a small-diameter inner hole cylinder liner includes a fixedly connected support seat, an upper mounting plate, and a lower mounting plate, and there is a gap between the upper mounting plate and the lower mounting plate; a first pneumatic telescopic component is fixedly installed on the lower mounting plate, the movable end of the first pneumatic telescopic component is slidably connected to the upper mounting plate, and the end of the first pneumatic telescopic component is fixedly connected to the support seat; a second pneumatic telescopic component is fixedly arranged in the support seat, the second pneumatic telescopic component includes a pull rod slidably connected to the support seat, a notch is provided on the pull rod, and several pressure plates are evenly distributed around the axis of the pull rod on the support seat, the top of the pressure plate is a clamping end that can clamp the hole wall of the inner hole of the cylinder liner, and the bottom of the pressure plate is a force-bearing end, and the force-bearing end is rotatably connected to the support seat, and a bayonet is fixedly arranged on the support seat, and the bayonet is inserted into the notch and can swing within the notch.

[0007] Beneficial effects: This solution achieves stable clamping and automated installation of cylinder liners with small diameters and irregular shapes through the synergistic effect of the second pneumatic telescopic assembly and the first pneumatic telescopic assembly, significantly improving installation efficiency and precision, and is suitable for complex working conditions in actual production. Specifically, the second pneumatic telescopic assembly drives the pull rod to move upward, causing the pressure plate to rotate around the hinge hole and abut against and press the side wall of the inner hole of the cylinder liner, thereby achieving stable clamping from the inside. This design is particularly suitable for cylinder liners with small diameters and irregular shapes, and solves the problem that traditional outward clamping fixtures cannot stably clamp such cylinder liners. At the same time, the first pneumatic telescopic assembly drives the connecting seat and the guide rod, thereby driving all components above the support seat, that is, the part that specifically clamps the cylinder liner, to move toward the cylinder body to complete the installation of the cylinder liner. This design realizes the automation of the installation process, improves installation efficiency and precision, and reduces the complexity and errors of manual operations.

[0008] Furthermore, as an improvement, a connecting rod is fixedly arranged between the upper mounting plate and the lower mounting plate, and both ends of the connecting rod are detachably fixedly connected to the upper mounting plate and the lower mounting plate respectively.

[0009] Beneficial effect: By replacing connecting rods of different lengths, the gap between the upper mounting plate and the lower mounting plate can be flexibly adjusted. This design significantly improves the adjustment flexibility of the device, enabling it to better match the telescopic range of the first pneumatic telescopic assembly, ensuring the applicability and reliability of the device under different conditions.

[0010] Furthermore, as an improvement, the first pneumatic telescopic assembly includes a first cylinder, a connecting seat fixedly connected to the movable end of the first cylinder, and guide rods evenly distributed on the connecting seat away from one end of the first cylinder, wherein the end of the guide rod away from the first cylinder is fixedly connected to the support seat.

[0011] Beneficial Effects: By evenly distributing guide rods on the connecting base and fixing the other ends of the guide rods to the supporting base, a stable support structure is formed. This design not only enhances the stability of the pneumatic telescopic assembly, but also improves the guiding accuracy of the guide rods, ensuring linear motion of the cylinder during telescopic movement, reducing deviation and vibration, and improving the reliability and service life of the entire device.

[0012] Furthermore, as an improvement, the support seat includes a chassis and a broken-line bracket fixedly arranged on the chassis, hinge holes are provided at both ends of the broken-line bracket, and the pressure plate is hinged to the hinge holes.

[0013] Beneficial Effects: The hinge holes are provided at both ends of the zigzag bracket, so that the pressure plate can be firmly connected to the bracket through the hinge holes. The two adjacent zigzag brackets provide stable support for the pressure plate, ensuring the stability and reliability of the pressure plate during installation and use.

[0014] Furthermore, as an improvement, the notch on the pull rod is an annular groove provided on an end of the pull rod away from the first pneumatic telescopic assembly.

[0015] Beneficial effects: Compared with the design of a single independent groove, the design of the annular groove simplifies the processing technology, reduces the processing steps and complexity, and reduces the production cost. At the same time, the continuous structure of the annular groove enables the latch on the pressure plate to be inserted into the notch more smoothly, thereby improving the efficiency and reliability of assembling the pressure plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 An axonometric view of the cylinder sleeve clamped by the present invention;

[0017] Figure 2 This is an axonometric view of the first embodiment of the automatic installation fixture for a small-diameter inner bore cylinder liner of the present utility model;

[0018] Figure 3 for Figure 2 AA cross-sectional view;

[0019] Figure 4 for Figure 3 Axonometric view of the center support. DETAILED DESCRIPTION

[0020] The following is further described in detail through specific implementation methods:

[0021] The marks in the drawings of the specification include: cylinder liner 1, inner hole 101, edge 102, support seat 2, chassis 201, broken line bracket 202, hinge hole 203, upper mounting plate 3, lower mounting plate 4, connecting rod 5, first pneumatic telescopic assembly 6, first cylinder 601, connecting seat 602, guide rod 603, second pneumatic telescopic assembly 7, second cylinder 701, pull rod 702, notch 703, pressure plate 8.

[0022] Example 1

[0023] Combine Figures 1-4 As shown, the automatic mounting fixture for the cylinder liner 1 with a small-diameter inner hole 101 includes a fixedly connected support seat 2, an upper mounting plate 3, and a lower mounting plate 4. The upper mounting plate 3 and the lower mounting plate 4 are both square plates. Four connecting rods 5 with a certain length are fixedly arranged at the four corners between the upper mounting plate 3 and the lower mounting plate 4, so that there is a gap between the upper mounting plate 3 and the lower mounting plate 4. The two ends of the connecting rod 5 are detachably fixedly connected to the upper mounting plate 3 and the lower mounting plate 4 in a threaded connection.

[0024] A first pneumatic telescopic assembly 6 is fixedly mounted on the lower mounting plate 4. Specifically, the first pneumatic telescopic assembly 6 comprises a first cylinder 601, a connecting base 602 fixedly connected to the movable end of the first cylinder 601, and guide rods 603 uniformly distributed on the connecting base 602 at one end away from the first cylinder 601. A through hole is provided in the center of the lower mounting plate 4. The first cylinder 601 is fixedly mounted to the bottom of the lower mounting plate 4 by screws. The movable end of the first cylinder 601 is slidably connected to the through hole in the mounting plate and is fixedly engaged with the bottom of the connecting base 602. One end of the guide rod 603 is fixedly connected to the connecting base 602, and the other end of the guide rod 603 is slidably connected to the upper mounting plate 3. The end of the guide rod 603, away from the first cylinder 601, is fixedly connected to the bottom of the support base 2. Driven by the first cylinder 601, the components above the support base 2 (support base 2, first pneumatic telescopic assembly 6, and pressure plate 8 described below) can automatically move as a whole, along the axis of the guide rod 603.

[0025] The second pneumatic telescopic assembly 7 includes a second cylinder 701 and a pull rod 702 fixedly connected to the movable end of the second cylinder 701. A mounting hole is opened in the center of the support seat 2. The second cylinder 701 is fixedly set at the bottom of the mounting hole. The pull rod 702 slides with the support seat 2 in the mounting hole. An annular notch 703 is opened on the end of the pull rod 702 away from the first pneumatic telescopic assembly 6.

[0026] The support base 2 includes a chassis 201 and three broken-line brackets 202 fixedly mounted on the chassis 201. Three pressure plates 8 are evenly distributed around the axis of the pull rod 702 on the support base 2. The top of the pressure plate 8 is a clamping end capable of engaging the wall of the inner hole 101 of the cylinder liner 1. The bottom of the pressure plate 8 is a force-bearing end. Hinge holes 203 are provided at both ends of the bottom of the broken-line bracket 202. The force-bearing ends of the pressure plate 8 are hinged to the hinge holes 203. An integrally formed interface is fixedly mounted on the support base 2. The interface is inserted into the notch 703 and can swing within the notch 703, i.e., a swing gap is provided between the interface and the notch 703.

[0027] The specific application process is as follows:

[0028] When in use, the three pressing plates 8 are initially in an inwardly contracted state, and the parts to be installed need to be placed in a manner such as a robot or manually. Figure 1 The inner hole 101 of the cylinder sleeve 1 is aligned and inserted into the plug formed by the top of the three pressure plates 8, and then the second cylinder 701 is started first, so that the movable end of the second cylinder 701 pushes up the pull rod 702 and drives the three pressure plates 8 to expand outward, wherein Figure 3The pressure plate 8 shown rotates counterclockwise around the hinge hole 203 and abuts and presses the side wall of the inner hole 101 of the cylinder liner 1, so that the cylinder liner 1 is stably clamped from the inside. Then, the first cylinder 601 is started again, and the movable end of the first cylinder 601 is controlled to lift the connecting seat 602 and the guide rod 603, thereby driving all components above the support seat (including the cylinder liner 1) to move toward the cylinder body until they are close to the installation target position and there is a remaining distance. Then, the movable end of the second cylinder 701 is controlled to pull the pull rod 702 downward so that the pressure plate 8 contracts inward to release the clamping of the cylinder liner 1. Then, the movable end of the first cylinder 601 is continued to be controlled to continue to push the cylinder liner 1 against the installation target position. Finally, the movable end of the first cylinder 601 is continued to be controlled to reset to withdraw the installation fixture, thereby completing the single installation process of the cylinder liner 1.

[0029] The above is only an embodiment of the present invention. The present invention is not limited to the field involved in this implementation case. Common knowledge such as the specific structure and characteristics of the scheme is not described in detail here. It should be pointed out that for those skilled in the art, without departing from the structure of the present invention, several modifications and improvements can be made, which should also be regarded as the scope of protection of the present invention. These will not affect the effect of the implementation of the present invention and the practicality of the patent. The scope of protection required by this application shall be based on the content of its claims, and the specific implementation methods and other records in the specification can be used to interpret the content of the claims.

Claims

1. Automatic installation fixture for small diameter inner hole cylinder sleeve, characterized by: It includes a fixedly connected support seat, an upper mounting plate, and a lower mounting plate, with a gap between the upper mounting plate and the lower mounting plate; A first pneumatic telescopic assembly is fixedly mounted on the lower mounting plate, wherein a movable end of the first pneumatic telescopic assembly is slidably connected to the upper mounting plate, and an end of the first pneumatic telescopic assembly is fixedly connected to a support seat; A second pneumatic telescopic assembly is fixedly arranged in the support seat, and the second pneumatic telescopic assembly includes a pull rod slidably connected to the support seat, a notch is provided on the pull rod, and several pressure plates are evenly distributed around the axis of the pull rod on the support seat. The top of the pressure plate is a clamping end that can clamp the hole wall of the inner hole of the cylinder sleeve, and the bottom of the pressure plate is a force-bearing end that is rotatably connected to the support seat. A bayonet is fixedly arranged on the support seat, and the bayonet is inserted into the notch and can swing within the notch.

2. The automatic installation fixture for small-diameter inner bore cylinder liner according to claim 1, characterized in that: A connecting rod is fixedly arranged between the upper mounting plate and the lower mounting plate, and two ends of the connecting rod are detachably fixedly connected to the upper mounting plate and the lower mounting plate respectively.

3. The automatic installation fixture for small-diameter inner bore cylinder liner according to claim 2, characterized in that: The first pneumatic telescopic assembly includes a first cylinder, a connecting seat fixedly connected to the movable end of the first cylinder, and guide rods evenly distributed on the connecting seat away from one end of the first cylinder, wherein the end of the guide rod away from the first cylinder is fixedly connected to the support seat.

4. The automatic installation fixture for small-diameter inner bore cylinder liner according to claim 3, characterized in that: The support seat comprises a chassis and a broken line bracket fixedly arranged on the chassis. Hinge holes are provided at both ends of the broken line bracket, and the pressure plate is hinged to the hinge holes.

5. The automatic installation fixture for small-diameter inner bore cylinder liner according to claim 4, characterized in that: The notch on the pull rod is an annular groove provided on one end of the pull rod away from the first pneumatic telescopic assembly.

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