Cylinder body tile cover pin bush pressing machine

Abstract

The utility model provides a cylinder body tile cover pin bush press-fitting machine which comprises a machine frame and a working table, the working table is connected with a longitudinal displacement mechanism used for station switching, and a plurality of sets of clamps used for positioning and supporting a tile cover and a set of lever assemblies used for pressing the tile cover are arranged on the working table side by side. Pressing rods with the number equal to that of the clamps are installed above the workbench, each pressing rod is connected with an electric cylinder, and the pressing rods are driven by the electric cylinders to move up and down. The press-fitting machine has the advantages of being high in operation efficiency and good in press-fitting effect.

Description

Technical Field

[0001] The utility model mainly relates to the technical field related to the assembly of engine cylinder body accessories, in particular to a cylinder body bearing cap pin sleeve press-fitting machine. Background Art

[0002] for Figure 1 The commonly used engine cylinder block cover of the structure shown has two openings on both sides of the cover. According to the process requirements, corresponding pin sleeves need to be press-fitted into the openings.

[0003] In the prior art, most of them adopt the manual pressing method, and the main working process is to first position the tile cover through the tooling, place the pin sleeve at the corresponding opening position, and press the pin sleeve by hammering, etc., which is labor-intensive, inefficient, and difficult to ensure the quality of pressing. In the prior art, a few adopt the machine pressing method, using a robot instead of manual pressing, but most of them can only press one pin sleeve at a time, which is inefficient. Moreover, the positioning of the pin sleeve is not accurate enough, which makes the pin sleeve easy to be pressed off or damaged, thus affecting the quality of the product.

[0004] Therefore, it is necessary to design a press-fitting machine with high efficiency and good press-fitting effect to solve the pin sleeve press-fitting problem of the engine cylinder block tile cover. Utility Model Content

[0005] In order to solve the deficiencies of the current technology, the utility model combines the existing technology and, starting from practical application, provides a cylinder block bearing cover pin sleeve press-fitting machine, which has the advantages of high operating efficiency and good press-fitting effect.

[0006] The technical solution of the utility model is as follows:

[0007] A cylinder block bearing cover pin sleeve pressing machine comprises a frame and a workbench. The workbench is connected to a longitudinal displacement mechanism for station switching. A plurality of groups of clamps for positioning and supporting the bearing cover and a group of lever assemblies for pressing the bearing cover are arranged in parallel on the workbench. A number of pressure rods equal to the number of the clamps are installed above the workbench. Each pressure rod is connected to an electric cylinder, and the electric cylinder drives the pressure rod to move up and down.

[0008] Furthermore, the longitudinal displacement mechanism includes a longitudinal displacement motor, a guide rail, a slider and a lead screw. The workbench is fixedly connected to the slider, the workbench is threadedly matched with the lead screw, the slider is slidably matched with the guide rail, and one end of the lead screw is connected to the longitudinal displacement motor.

[0009] Furthermore, the fixture includes a mounting block and a fixture plate. The mounting block is fixed to the upper part of the workbench, the fixture plate is fixed to the upper part of the mounting block, and an arc groove is arranged on the upper surface of the fixture plate.

[0010] Furthermore, the fixture also includes two positioning rods, the distance between the two positioning rods is equal to the distance between the openings on the tile cover, the lower ends of the positioning rods are slidably matched with the mounting blocks, and the upper ends of the positioning rods extend out of the fixture plate.

[0011] Furthermore, the mounting block is provided with two openings, a sliding sleeve and a spring are installed in the openings, the positioning rod is slidably matched with the sliding sleeve, and the upper end of the spring is tightly pressed against the lower end of the positioning rod.

[0012] Furthermore, a circular chamfer is provided on the top of the positioning rod.

[0013] Furthermore, a proximity sensor for detecting the tile cover is installed on one side of the fixture plate.

[0014] Furthermore, the lever assembly includes a pull rod and multiple clamping rods, one end of the pull rod is connected to the clamping cylinder, the pull rod passes through multiple clamp mounting blocks, the multiple clamping rods are hingedly connected to the corresponding mounting blocks in the middle, one end of the clamping rod is connected to the pull rod, and the other end of the clamping rod is used to clamp the tile cover.

[0015] Furthermore, the other end of the clamping rod for clamping the tile cover is provided with a ball plunger or an elastic sleeve.

[0016] Furthermore, a sliding sleeve is installed in the middle of the positioning block, and the pull rod is slidably matched with the sliding sleeve.

[0017] Beneficial effects of the utility model:

[0018] 1. In the utility model, the pin sleeves of multiple cylinder body covers can be installed at one time, which is highly efficient. Each cover is individually equipped with a press-fit electric cylinder, and the pressure control is more precise. Multiple covers are pressed by the same lever assembly, which has a compact and reasonable structure and low cost.

[0019] 2. In the utility model, the designed fixture structure is stable and reliable, which can ensure the stability of the tile cover during the press-fitting process. The positioning rod can facilitate the installation of the tile cover and the pin sleeve on the one hand, and ensure the press-fitting accuracy on the other hand to avoid the pin sleeve from being deflected or damaged. The arc chamfer design on the top of the positioning rod has good guiding properties, and the workpiece can be smoothly inserted and removed without jamming.

[0020] 3. In the utility model, the lever can control the compression of multiple tile covers at one time, and the structure is simple and easy to implement. The ball plunger or elastic sleeve at the end of the pressure rod ensures the compression of the arc surface on the upper surface of the tile cover. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Attached Figure 1 This is a schematic diagram of the tile cover structure;

[0022] Attached Figure 2 The overall structure of the press machine is shown in Figure 1. Figure 1 ;

[0023] Attached Figure 3 The overall structure of the press machine is shown in Figure 1. Figure 2 ;

[0024] Attached Figure 4 Schematic diagram of the structure of the press machine Figure 1 ;

[0025] Attached Figure 5 Schematic diagram of the structure of the press machine Figure 2 ;

[0026] Attached Figure 6 is a schematic diagram of the lever assembly structure;

[0027] Attached Figure 7 is a schematic diagram of the fixture structure;

[0028] Attached Figure 8 It is a schematic diagram of the cross-sectional structure of the fixture.

[0029] Numbers shown in the accompanying drawings:

[0030] 1. Frame; 2. Workbench; 3. Tile cover; 4. Pressure rod; 5. Electric cylinder; 6. Longitudinal displacement motor; 7. Clamping cylinder; 8. Clamp; 9. Lever assembly; 10. Pin sleeve; 11. Pull rod; 12. Clamping rod; 13. Ball plunger; 14. Mounting block; 15. Clamp plate; 16. Positioning rod; 17. Proximity sensor; 18. Spring; 19. Pin sleeve box. DETAILED DESCRIPTION

[0031] The utility model is further described in conjunction with the accompanying drawings and specific embodiments. It should be understood that these embodiments are only used to illustrate the utility model and are not used to limit the scope of the utility model. In addition, it should be understood that after reading the content taught by the utility model, those skilled in the art can make various changes or modifications to the utility model, and these equivalent forms also fall within the scope defined by this application.

[0032] refer to Figure 1-Figure 8 As shown, this embodiment provides a cylinder block bearing cover pin sleeve press-fitting machine, which is mainly used for press-fitting the pin sleeve of the bearing cover shown in 1.

[0033] In this embodiment, the press machine mainly includes a frame 1, a workbench 2, etc., wherein the workbench 2 is installed on the frame 1 through a longitudinal displacement mechanism, and a pin sleeve box 19 is arranged on the outside of the frame 1. In this embodiment, the longitudinal displacement mechanism has two main functions. One is that the workbench 2 can be moved outward to facilitate the staff to install the tile cover 3, and the other is that the workstation can be switched, so that after the pin sleeve 10 on the inner side of the tile cover 3 is pressed, the tile cover 3 is replaced and the outer pin sleeve 10 is pressed. The longitudinal displacement mechanism adopts a conventional screw slider structure, which mainly includes a longitudinal displacement motor 6, a guide rail, a slider and a screw. The longitudinal displacement motor 6 drives the screw to rotate, thereby controlling the longitudinal movement of the workbench 2.

[0034] The press-fitting machine provided in this embodiment can realize the press-fitting operation of four tile covers 3 at one time. As shown in the reference figure, four sets of clamps 8 and a set of lever assemblies 9 are arranged in parallel on the workbench 2, and four sets of pressing rods 4 are installed above the corresponding workbench 2, and each set of pressing rods 4 is connected to an electric cylinder 5.

[0035] The main working process of the press machine of the above structure is as follows: First, the staff places the tile cover 3 on the clamp 8, and presses it through the lever assembly 9 to ensure stability during press fitting, then puts the pin sleeve 10 in the corresponding position, starts the electric cylinder 5, and presses the pin sleeve 10 into the hole inside the tile cover 3 through the pressure rod 4, then the longitudinal displacement mechanism is actuated to perform position change, and after the position change, the hole outside the tile cover 3 is aligned with the position of the pressure rod 4, and the electric cylinder 5 is started again to press the pin sleeve 10 outside the tile cover 3. This structure can realize the press fitting of four tile covers 3 at one time, and is equipped with four independent electric cylinders 5, which is convenient for precise control of pressure.

[0036] As the design focus of this structure, the clamp 8 needs to ensure high stability and positioning when the tile cover 3 is pressed. In this embodiment, the clamp 8 includes a mounting block 14 and a clamp plate 15, the mounting block 14 is at the bottom, and the clamp plate 15 is at the top. The mounting block 14 is fixed on the workbench 2, and the clamp plate 15 is fixed on the mounting block 14. An arc groove is set on the upper surface of the clamp plate 15 to adapt to the arc structure at the bottom of the tile cover 3 to facilitate the placement of the tile cover 3.

[0037] In order to ensure the positioning of the tile cover 3 and facilitate the placement of the pin sleeve 10, in this embodiment, the fixture 8 also includes two positioning rods 16, the spacing between the two positioning rods 16 is equal to the spacing between the openings on the tile cover 3, and at the same time, two openings are set on the mounting block 14, and a sliding sleeve is installed in the opening, and a spring 18 is installed in the sliding sleeve. The lower end of the positioning rod 16 is slidably set in the sliding sleeve, and the bottom is in contact with the spring 18. The upper end of the positioning rod 16 extends out of the fixture plate 15 and is located outside. In this structure, before press-fitting, when the tile cover 3 is placed on the fixture plate 15, the two openings of the tile cover 3 pass through the positioning rods 16, and the positioning is achieved by the positioning rods 16. The pin sleeve 10 is sleeved on the positioning rods 16, and the pressure rod 4 presses the positioning rod 16 and the pin sleeve 10 downward to make the pin sleeve 10 enter the opening of the tile cover 3. After the tile cover 3 is removed, the positioning rod 16 can be automatically reset. At the same time, the top of the positioning rod 16 is designed to be conical, and the chamfer is an arc transition, which has good guiding properties, and the workpiece can be smoothly inserted and removed from the pin without any jamming.

[0038] As a preferred solution of this embodiment, a proximity sensor 17 for detecting the tile cover 3 is installed on one side of the fixture plate 15 to determine whether the tile cover 3 is in place.

[0039] In this embodiment, the lever assembly 9 can realize the clamping of multiple tile covers 3, which includes a pull rod 11 and multiple clamping rods 12. One end of the pull rod 11 is connected to the clamping cylinder 7, and the clamping cylinder 7 can drive the pull rod 11 to move linearly. The other end of the pull rod 11 passes through the mounting blocks 14 of multiple clamps 8. The clamping rod 12 is hingedly connected to the corresponding mounting blocks 14 in the middle, and one end of the clamping rod 12 is connected to the pull rod 11. In this structure, when the pull rod 11 is pulled, it drives the multiple clamping rods 12 to flip over, so that the stability can be ensured by pressing the end of the clamping rod 12 on the tile cover 3. At the same time, the ball head plunger 13 or elastic sleeve shown in the figure can be installed on the end of the clamping rod 12 to adapt to the arc groove on the upper surface of the tile cover 3.

Claims

1. A cylinder block bearing cover pin sleeve press machine, comprising a frame and a workbench, characterized in that: The workbench is connected to a longitudinal displacement mechanism for workstation switching. A plurality of groups of clamps for positioning and supporting tile covers and a group of lever assemblies for pressing the tile covers are arranged in parallel on the workbench. A number of pressure rods equal to the number of clamps are installed above the workbench. Each pressure rod is connected to an electric cylinder, which drives the pressure rod to move up and down.

2. The cylinder block cap pin sleeve press machine according to claim 1, characterized in that: The longitudinal displacement mechanism includes a longitudinal displacement motor, a guide rail, a slider and a lead screw. The workbench is fixedly connected to the slider, the workbench is threadedly matched with the lead screw, the slider is slidably matched with the guide rail, and one end of the lead screw is connected to the longitudinal displacement motor.

3. The cylinder block cap pin sleeve press machine according to claim 1, characterized in that: The fixture comprises a mounting block and a fixture plate. The mounting block is fixed to the upper part of the workbench, the fixture plate is fixed to the upper part of the mounting block, and an arc groove is arranged on the upper surface of the fixture plate.

4. The cylinder block cap pin sleeve press machine according to claim 3, characterized in that: The fixture also includes two positioning rods, the distance between the two positioning rods is equal to the distance between the openings on the tile cover, the lower ends of the positioning rods are slidably matched with the mounting blocks, and the upper ends of the positioning rods extend out of the fixture plate.

5. The cylinder block bearing cover pin sleeve press machine according to claim 4, characterized in that: The mounting block is provided with two openings, a sliding sleeve and a spring are installed in the openings, the positioning rod is slidably matched with the sliding sleeve, and the upper end of the spring is tightly pressed against the lower end of the positioning rod.

6. The cylinder block cap pin sleeve press machine according to claim 4, characterized in that: A circular arc chamfer is arranged on the top of the positioning rod.

7. The cylinder block cap pin sleeve press machine according to claim 3, characterized in that: A proximity sensor for detecting the tile cover is installed on one side of the fixture plate.

8. The cylinder block cap pin sleeve press machine according to claim 3, characterized in that: The lever assembly includes a pull rod and multiple clamping rods, one end of the pull rod is connected to the clamping cylinder, the pull rod passes through multiple clamp mounting blocks, the multiple clamping rods are hingedly connected to the corresponding mounting blocks in the middle, one end of the clamping rod is connected to the pull rod, and the other end of the clamping rod is used to clamp the tile cover.

9. The cylinder block cap pin sleeve press machine according to claim 8, characterized in that: The other end of the pressing rod for pressing the tile cover is provided with a ball plunger or an elastic sleeve.

10. The cylinder block cap pin sleeve press machine according to claim 8, characterized in that: A sliding sleeve is installed in the middle of the installation block, and the pull rod is slidably matched with the sliding sleeve.

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