Guide pipe press-fitting mechanism for manufacturing engine cylinder cover

Abstract

The utility model relates to the technical field of guide pipe press fitting, in particular to an engine cylinder cover manufacturing guide pipe press fitting mechanism which comprises a base, a supporting frame is connected to the back face of the top of the base, a hydraulic cylinder is connected to the lower portion of the top of the supporting frame, and a calibration mechanism is arranged at the bottom of the hydraulic cylinder. When the hydraulic cylinder is arranged to drive the guide pipe fixing assembly to descend, due to the weight of the calibration blocks, the calibration blocks are located at the lowest position all the time, the calibration blocks are in a mutually-attached state to form a cone, and in the continuous descending process of the hydraulic cylinder, the calibration blocks are matched with the weight of the calibration blocks when the cone makes contact with the mounting hole, so that the calibration effect is improved. The circular sliding block is driven to slide in the disc-shaped sliding groove when the mounting hole extrudes the calibration block, so that the guide pipe fixing assembly is automatically aligned with the center of the mounting hole, the time for calibrating the positions of the guide pipe and the mounting hole is saved, and the machining efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of conduit press-fitting, in particular to a conduit press-fitting mechanism for manufacturing an engine cylinder cover. Background Art

[0002] The valve guide is a guide device for the engine valve, which guides the valve and transfers the heat on the valve stem to the cylinder head through the valve guide. When assembling the engine, the valve guide is pressed into the guide bottom hole in the cylinder head by external force, and then the guide hole is finely processed. Therefore, the press-fitting quality of the valve guide will directly affect the quality of subsequent fine processing. If the press-fitting is skewed, it will cause uneven processing of the guide hole wall thickness. During the operation of the engine, there will be abnormal contact between the valve and the guide hole, which will accelerate the wear of the guide hole and affect the performance parameters of the whole machine. The cylinder head guide assembly work is carried out through the cylinder head guide press machine.

[0003] The prior art, such as publication number CN207255627U, provides a vehicle valve guide press-fitting mechanism, including a press-fitting hydraulic cylinder, a connecting rod, a press-fitting guide sleeve, a positioning seat, a shock absorber and a reset compression spring. A stroke control switch is installed on one side of the press-fitting hydraulic cylinder. The connecting rod is fixed to the output end of the press-fitting hydraulic cylinder. The press-fitting guide sleeve is installed between the connecting rod and the pressure sensor. The pressure sensor is electrically connected to a pressure display gauge. A transverse drive guide rail is installed at the bottom of the positioning seat. The transverse drive guide rail and the longitudinal drive guide rail are both arranged on the base. The shock absorber is fixedly connected between the positioning seat and the cylinder. Sliding limit blocks are installed on both sides of the cylinder, and a pressure head is correspondingly provided directly above the cylinder. The pressure head is fixed to the bottom end of the press-fitting guide sleeve through a conversion joint. A guide rod is connected to the reset compression spring. The guide rod passes through the valve hole of the cylinder head. The structure is simple and stable, the function is practical, the fixing effect is good, the movement is flexible, the reliability is strong, the application range is wide, and the service life can be guaranteed.

[0004] However, in actual installation, due to the small gap between the conduit and the conduit mounting hole on the engine, it is particularly important to align the conduit with its mounting hole so that they are on the same axis during the press-fitting process. In the prior art, the conduit is usually aligned by manually adjusting the position of the cylinder head mounting hole, which is inefficient and affects the assembly efficiency. In view of this, a conduit press-fitting mechanism for manufacturing an engine cylinder head is proposed. Utility Model Content

[0005] The utility model aims to provide a conduit press-fitting mechanism for manufacturing an engine cylinder head, which solves the problem of low efficiency when calibrating the conduit to align with the mounting hole on the cylinder head.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] A conduit pressing mechanism for manufacturing an engine cylinder head comprises a base, a support frame is connected to the top and back of the base, a hydraulic cylinder is connected to the bottom of the top of the support frame, a calibration mechanism is arranged at the bottom of the hydraulic cylinder, the calibration mechanism comprises a connecting disk, the connecting disk is connected to the output end of the hydraulic cylinder, a disc-shaped slide groove is provided on the inner wall of the connecting disk, a circular slider is slidably connected to the inner wall of the disc-shaped slide groove, a conduit fixing assembly is arranged at the bottom of the circular slider, a connecting rod is connected to the outer wall of the circular slider, the inner wall of the connecting rod is slidably connected to the slide rod, and the bottom of the slide rod is connected to The calibration block is shaped like a quarter of a cone. When the hydraulic cylinder is set to drive the catheter fixing assembly to descend, the calibration block is always at the lowest point due to its own weight, so that the calibration blocks are in a state of mutual fit to form a cone. During the continuous descent of the hydraulic cylinder, the cone contacts the mounting hole with the weight of the calibration block itself, so that the mounting hole squeezes the calibration block and drives the circular slider to slide in the disc-shaped slide groove, so that the catheter fixing assembly is automatically aligned with the center of the mounting hole, so as to save time in calibrating the position of the catheter and the mounting hole, so as to improve processing efficiency.

[0008] Preferably, the slide rod is arranged to be inclined below the catheter fixing assembly. By arranging the slide rod in an inclined manner, during the continuous descent of the hydraulic cylinder, the calibration block is squeezed and will gradually rise and separate, thereby avoiding affecting the hydraulic cylinder driving the catheter to descend. The top of the slide rod is connected to a limit block, and a limit block is provided at the top of the slide rod to avoid the slide rod from detaching from the connecting rod.

[0009] Preferably, the calibration blocks form a complete cone when fitted together, and a through hole is provided at the center of the cone. By providing a through hole at the center of the cone formed by the calibration blocks, it is possible to avoid collision between the calibration blocks when they are fitted together, which may easily cause deformation of the sharp corners.

[0010] Preferably, the outer wall of the calibration block is connected to a magnetic sheet, and the magnetic sheet is located on the fitting surface between the calibration blocks. By arranging the magnetic sheet on the fitting surface between the calibration blocks, the shape of the cone formed by splicing the calibration blocks is more stable.

[0011] Preferably, a cylinder head fixture for clamping the engine cylinder head is connected to the top of the base, and the cylinder head fixture is located directly below the hydraulic cylinder. Such an arrangement can perform preliminary positioning of the engine cylinder head to save overall calibration time.

[0012] Preferably, the catheter fixing assembly includes a flange and a sleeve, and the sleeve is arranged at the bottom of the circular slider. By arranging the flange to connect the sleeve, the sleeve below can be removed by screwing the bolts at will to adapt to the size of the catheter.

[0013] Preferably, the sleeve is connected to the circular slider via a flange, and the inner wall of the sleeve is connected to a rubber sleeve. By arranging the rubber sleeve on the inner wall of the sleeve, the sleeve wall has a certain elastic space to facilitate the insertion of the catheter, and the catheter can be fixed by the friction force generated by the rubber sleeve.

[0014] By means of the above technical solution, the utility model provides a conduit press-fitting mechanism for manufacturing an engine cylinder head, which has at least the following beneficial effects:

[0015] 1. The utility model sets a hydraulic cylinder to drive the catheter fixing assembly to descend. Due to the weight of the calibration block itself, the calibration block is always at the lowest point, so that the calibration blocks are in a state of mutual contact to form a cone. During the continuous descent of the hydraulic cylinder, the cone contacts the mounting hole with the weight of the calibration block itself, so that the mounting hole squeezes the calibration block and drives the circular slider to slide in the disc-shaped slide groove, so that the catheter fixing assembly is automatically aligned with the center of the mounting hole, so as to save time for calibrating the position of the catheter and the mounting hole, so as to improve the processing efficiency.

[0016] 2. The utility model provides a flange to connect the sleeve, so that the sleeve below can be removed by screwing the bolts at will to adapt to the size of the catheter, and a rubber sleeve is provided on the inner wall of the sleeve so that the sleeve wall has a certain elastic space for convenient insertion of the catheter, and the friction force generated by the rubber sleeve can fix the catheter, so as to facilitate the adaptation and installation of catheters of various models. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The accompanying drawings described herein are used to provide a further understanding of the present invention and constitute a part of this application:

[0018] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0019] Figure 2 It is a structural schematic diagram of the calibration mechanism in the utility model;

[0020] Figure 3 It is a partial cross-sectional view of the calibration mechanism in the utility model;

[0021] Figure 4 It is a structural schematic diagram of the calibration block in the utility model.

[0022] In the figure: 1. base; 2. support frame; 3. hydraulic cylinder; 4. calibration mechanism; 41. connecting plate; 42. disc-shaped slide groove; 43. circular slider; 44. connecting rod; 45. slide rod; 451. limit block; 46. calibration block; 461. magnetic sheet; 47. catheter fixing assembly; 471. flange; 472. sleeve; 5. cylinder head tooling. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] Example 1

[0025] A guide tube press-fitting mechanism for manufacturing an engine cylinder head, such as Figure 1 - Figure 4 As shown, it includes a base 1, a support frame 2 is connected to the top and back of the base 1, a hydraulic cylinder 3 is connected to the bottom of the top of the support frame 2, a calibration mechanism 4 is arranged at the bottom of the hydraulic cylinder 3, the calibration mechanism 4 includes a connecting plate 41, the connecting plate 41 is connected to the output end of the hydraulic cylinder 3, a disc-shaped slide groove 42 is provided on the inner wall of the connecting plate 41, a circular slider 43 is slidably connected to the inner wall of the disc-shaped slide groove 42, a catheter fixing component 47 is arranged at the bottom of the circular slider 43, a connecting rod 44 is connected to the outer wall of the circular slider 43, a sliding rod 45 is slidably connected to the inner wall of the connecting rod 44, a calibration block 46 is connected to the bottom of the sliding rod 45, and the calibration block 46 is shaped like a quarter cone. When the catheter fixing component 47 is driven to descend by the hydraulic cylinder 3, the calibration block 46 is always at the lowest point due to its own weight, so that the calibration block 46 is at In a state of mutual adhesion, a cone is formed. During the continuous descent of the hydraulic cylinder 3, the cone contacts the mounting hole with the weight of the calibration block 46 itself, so that the mounting hole squeezes the calibration block 46 and drives the circular slider 43 to slide in the disc-shaped slide groove 42, so that the catheter fixing assembly 47 is automatically aligned with the center of the mounting hole to save time for calibrating the position of the catheter and the mounting hole to improve the processing efficiency. The slide bar 45 is tilted below the catheter fixing assembly 47. By setting the slide bar 45 in an inclined manner, during the continuous descent of the hydraulic cylinder 3, the calibration block 46 is squeezed and will gradually rise and separate, avoiding affecting the hydraulic cylinder 3 driving the catheter to descend. The top of the slide bar 45 is connected to the limit block 451. By setting the limit block 451 at the top of the slide bar 45, the slide bar 45 can be prevented from separating from the connecting rod 44.

[0026] Preferably, the calibration blocks 46 form a complete cone when they are fitted together, and a through hole is provided at the center of the cone of the calibration block 46. By providing a through hole at the center of the cone formed by the calibration blocks 46, it is possible to avoid collision between the calibration blocks 46 when they are fitted together, which may easily cause deformation of the sharp corners.

[0027] Preferably, the outer wall of the calibration block 46 is connected to a magnetic sheet 461, and the magnetic sheet 461 is located on the fitting surface between the calibration blocks 46. By arranging the magnetic sheet 461 on the fitting surface between the calibration blocks 46, the shape of the cone formed by splicing the calibration blocks 46 is more stable.

[0028] In this embodiment, when the hydraulic cylinder 3 is set to drive the catheter fixing assembly 47 to descend, due to the weight of the calibration block 46 itself, the calibration block 46 is always at the lowest point, so that the calibration blocks 46 are in a state of mutual contact to form a cone. During the continuous descent of the hydraulic cylinder 3, the cone contacts the mounting hole with the weight of the calibration block 46 itself, so that when the mounting hole squeezes the calibration block 46, it drives the circular slider 43 to slide in the disc-shaped slide groove 42, so that the catheter fixing assembly 47 is automatically aligned with the center of the mounting hole. During the continuous descent of the hydraulic cylinder 3, since the slide bar 45 is set at an angle, the calibration block 46 is squeezed and will gradually rise and separate, so as to avoid affecting the hydraulic cylinder 3 to drive the catheter to descend. At this time, the hydraulic cylinder 3 presses the catheter into the mounting hole of the engine cylinder head again.

[0029] Example 2

[0030] like Figure 1 , Figure 2 As shown, the top of the base 1 is connected to a cylinder head fixture 5 for clamping the engine cylinder head, and the cylinder head fixture 5 is located directly below the hydraulic cylinder 3. This arrangement can perform preliminary positioning of the engine cylinder head to save the time of overall calibration. The catheter fixing assembly 47 includes a flange 471 and a sleeve 472. The sleeve 472 is arranged at the bottom of the circular slider 43. By arranging the flange 471 to connect the sleeve 472, the bolts can be freely turned to remove the sleeve 472 below to adapt the size of the catheter. The sleeve 472 is connected to the circular slider 43 through the flange 471, and the inner wall of the sleeve 472 is connected to a rubber sleeve. By arranging the rubber sleeve on the inner wall of the sleeve 472, the sleeve 472 wall has a certain elastic space to facilitate the insertion of the catheter, and the friction force generated by the rubber sleeve can fix the catheter.

[0031] In this embodiment, the engine cylinder head is clamped by the cylinder head tooling 5, and the cylinder head tooling 5 is located directly below the hydraulic cylinder 3. This arrangement can perform preliminary positioning of the engine cylinder head to save the time of overall calibration. The catheter to be assembled is then inserted into the sleeve 472, and the friction force generated by the rubber sleeve can fix the catheter.

[0032] When the present invention is used, the cylinder head tooling 5 is used to clamp the cylinder head of the engine, and the cylinder head tooling 5 is located directly below the hydraulic cylinder 3. This arrangement can be used to perform preliminary positioning of the cylinder head of the engine to save the time of overall calibration. The catheter to be assembled is then inserted into the sleeve 472, and the friction force generated by the rubber sleeve can fix the catheter. When the hydraulic cylinder 3 is set to drive the catheter fixing assembly 47 to descend, the calibration block 46 is always at the lowest point due to its own weight, so that the calibration blocks 46 are mutually In the fitted state, a cone is formed. During the continuous descent of the hydraulic cylinder 3, the cone contacts the mounting hole with the weight of the calibration block 46, so that the mounting hole squeezes the calibration block 46 and drives the circular slider 43 to slide in the disc-shaped slide groove 42, so that the catheter fixing assembly 47 is automatically aligned with the center of the mounting hole. During the continuous descent of the hydraulic cylinder 3, since the slide rod 45 is set at an angle, the calibration block 46 is squeezed and will gradually rise and separate, avoiding affecting the hydraulic cylinder 3 to drive the catheter to descend. At this time, the hydraulic cylinder 3 presses the catheter into the mounting hole of the engine cylinder head.

[0033] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0034] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A duct press-fitting mechanism for manufacturing an engine cylinder head, comprising a base (1), characterized in that: The top back of the base (1) is connected to a support frame (2), the bottom of the top of the support frame (2) is connected to a hydraulic cylinder (3), the bottom of the hydraulic cylinder (3) is provided with a calibration mechanism (4), the calibration mechanism (4) comprises a connecting disk (41), the connecting disk (41) is connected to the output end of the hydraulic cylinder (3), the inner wall of the connecting disk (41) is provided with a disc-shaped slide groove (42), the inner wall of the disc-shaped slide groove (42) is slidably connected to a circular slider (43), the bottom of the circular slider (43) is provided with a catheter fixing component (47), the outer wall of the circular slider (43) is connected to a connecting rod (44), the inner wall of the connecting rod (44) is slidably connected to a slide rod (45), the bottom of the slide rod (45) is connected to a calibration block (46), and the calibration block (46) is in the shape of a quarter cone.

2. The engine cylinder head manufacturing conduit press-fitting mechanism according to claim 1, characterized in that: The slide bar (45) is arranged to be inclined downwardly of the catheter fixing assembly (47), and the top of the slide bar (45) is connected to a limiting block (451).

3. The engine cylinder head manufacturing conduit press-fitting mechanism according to claim 1, characterized in that: When the calibration blocks (46) are attached to each other, they form a complete cone, and a through hole is provided at the center of the cone.

4. The engine cylinder head manufacturing conduit press-fitting mechanism according to claim 3, characterized in that: The outer wall of the calibration block (46) is connected to a magnetic attraction sheet (461), and the magnetic attraction sheet (461) is located on the fitting surface between the calibration blocks (46).

5. The engine cylinder head manufacturing conduit press-fitting mechanism according to claim 1, characterized in that: The top of the base (1) is connected to a cylinder head fixture (5) for clamping the engine cylinder head, and the cylinder head fixture (5) is located directly below the hydraulic cylinder (3).

6. The engine cylinder head manufacturing conduit press-fitting mechanism according to claim 1, characterized in that: The catheter fixing assembly (47) comprises a flange (471) and a sleeve (472), and the sleeve (472) is arranged at the bottom of the circular sliding block (43).

7. The engine cylinder head manufacturing conduit press-fitting mechanism according to claim 6, characterized in that: The sleeve (472) is connected to the circular slider (43) via a flange (471), and the inner wall of the sleeve (472) is connected to a rubber sleeve.

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