Hydraulic machine with flat plate moving table

Abstract

The utility model discloses a hydraulic machine with a flat plate moving table, which is characterized in that the flat plate moving table is arranged above a machine body worktable, the lower edges of rollers at four corners of the flat plate moving table are respectively positioned in grooves of the machine body worktable, a lifting cylinder is mounted at the bottom of each groove, and an ejection block is mounted at the top of a plunger of each lifting cylinder; each ejection block is positioned below the corresponding roller; pressing cylinders with square cylinder bodies are symmetrically fixed to the opposite end faces of the machine body webs on the two sides, the tops of the square cylinder bodies abut against the lower portions of the step faces of the machine body webs, and the lower ends of plunger pistons of the pressing cylinders point to the flat plate moving table; a speed reducer is installed in a pit in the front side of the machine body workbench. The upper end of an output shaft of the speed reducer extends out of the upper surface of the machine body workbench and is provided with a pinion. A long groove extending in the front-back direction is formed in the middle of the lower end face of the flat plate moving table, and a rack is installed in the long groove and meshed with the small gear through straight teeth. The hydraulic machine is simple in structure, the moving table is thin, and lifting, clamping and translation are reliable.

Description

Technical Field

[0001] The utility model relates to a hydraulic press, in particular to a hydraulic press with a flat plate moving table, belonging to the technical field of hydraulic machine tools. Background Art

[0002] The hydraulic press with a movable worktable is located above the worktable of the machine body and can move along the rails and the guide rails on the top of the worktable of the machine body. During use, the movable worktable needs to be lifted, translated and clamped. After the lifting mechanism lifts the movable worktable, the moving-in and moving-out mechanism can translate the movable worktable out. After the mold is replaced, the moving-in and moving-out mechanism translates the movable worktable in again, and the clamping mechanism clamps the movable worktable on the worktable of the machine body for work.

[0003] In the prior art, a lifting and clamping oil cylinder is installed at each of the four corners of the machine body workbench, that is, the lifting and clamping actions are successively realized by one oil cylinder. Since the load required for lifting is relatively large, the plunger diameter of the oil cylinder is also relatively large, and the clamping chuck is installed on the large-diameter plunger, resulting in a large overall outer diameter and a large overall occupied space. It is necessary to open a large-diameter oil cylinder installation hole on the workbench, which affects its use on a small-table hydraulic press.

[0004] The Chinese utility model patent with publication number CN 201128237Y discloses a lifting clamping cylinder, including a cylinder body and a piston. The lifting clamping cylinder is fixed on a workbench, and the lifting clamping cylinder piston is connected to a clamping block through a stopper and a fixing block. The overall structure of the lifting clamping cylinder is relatively long and large, and even if a sinking installation is adopted, the moving platform still needs to have a relatively high height.

[0005] The design of the mobile platform of a small-table hydraulic press often encounters some difficulties. For example, the front, back, left, and right dimensions of the mobile platform of a small-table hydraulic press are small, and the space is very small. The reducer installed in the mobile platform needs to occupy a large space, and the height of the mobile platform needs to be increased to meet the installation size requirements of the reducer. The mobile platform design often needs to adopt a box-type welding structure, resulting in a large increase in manufacturing costs. In addition, the reducer is installed in the mobile platform, and the output shaft of the reducer needs to be connected to the roller of the mobile platform. The small space increases the difficulty of design and assembly. Utility Model Content

[0006] The purpose of the utility model is to overcome the problems existing in the prior art and provide a hydraulic press with a flat mobile table, which has a simple structure, a thin mobile table, and reliable lifting, clamping and translation, thereby providing a feasible solution for a small-table simple hydraulic press.

[0007] In order to solve the above technical problems, the utility model provides a hydraulic press with a flat plate moving table, comprising a machine body, four corners of the machine body are respectively provided with columns, the lower parts of the columns are connected through a machine body working table, guide rails are respectively embedded on both sides of the upper surface of the machine body working table, the four corners of the flat plate moving table are respectively supported on the guide rails through rollers, the lower edges of the four rollers are respectively located in the grooves of the machine body working table, the bottom of each groove is respectively installed with a lifting cylinder, the top of the plunger of each lifting cylinder is respectively installed with an ejection block, and each ejection block is respectively located below the corresponding roller;

[0008] The front and rear columns are connected through the fuselage belly plate, and the opposite end surfaces of the fuselage belly plates on both sides are symmetrically fixed with a clamping cylinder with a square cylinder body, the top of the cylinder body of the clamping cylinder is against the lower step surface of the fuselage belly plate, and the lower end of the plunger of the clamping cylinder is respectively pointed to the flat plate moving platform;

[0009] A reducer is installed in the front side pit of the fuselage workbench, and the upper end of the output shaft of the reducer extends out of the upper surface of the fuselage workbench and is installed with a pinion; a long groove extending in the front and rear directions is provided in the middle of the lower end surface of the flat plate moving platform, and a rack is installed in the long groove, and the rack is meshed with the pinion through spur teeth.

[0010] As an improvement of the present invention, the lower end surfaces of the four corners of the flat-panel moving platform are respectively provided with thinned notches, and the rollers are respectively installed at the corresponding notches.

[0011] Compared with the prior art, the utility model has achieved the following beneficial effects: the lifting cylinder and the clamping cylinder of the mobile platform are separately arranged, the height of the mobile platform and the hydraulic press is reduced, medium and thick plates can be used to manufacture the mobile platform, the manufacturing cost is reduced, the needs of small table tops can be met, and the fixing screws of the clamping cylinder are not subject to force; the translation mechanism is not affected by the floating of the flat mobile platform. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] The present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods. The accompanying drawings are only provided for reference and explanation and are not intended to limit the present invention.

[0013] Figure 1 This is a front view of a hydraulic press with a flat mobile table according to the utility model;

[0014] Figure 2 for Figure 1 Sectional view along AA;

[0015] Figure 3 It is a cross-sectional view of the corner of the moving platform in the utility model;

[0016] In the figure: 1. upper crossbeam; 2. column; 3. fuselage belly plate; 4. fuselage workbench; 5. guide rail; 6. flat mobile table; 7. roller; 8. lifting cylinder; 9. ejector block; 10. clamping cylinder; 11. reducer mounting plate; 12. reducer; 13. pinion; 14. rack; 15. bracket; 16. rear stop. DETAILED DESCRIPTION

[0017] In the following description of the utility model, the terms "upper", "lower", "front", "back", "left", "right", "inside", "outside", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the utility model and simplifying the description, and do not mean that the device must have a specific direction.

[0018] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below with reference to specific illustrations.

[0019] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention.

[0020] like Figures 1 to 3 As shown, the hydraulic press of the utility model includes a body, and four corners of the body are respectively provided with columns 2, the tops of the columns 2 are connected by an upper crossbeam 1, and the lower parts of the columns 2 are connected by a body workbench 4, and guide rails 5 are respectively embedded on both sides of the upper surface of the body workbench 4, and the four corners of the flat plate moving platform 6 are respectively supported on the guide rails 5 through rollers 7, and the front parts of the two guide rails 5 are respectively supported on the rails.

[0021] The lifting and clamping cylinders of the mobile platform are set separately, four lifting cylinders 8 are installed at the four corners of the fuselage workbench 4, and the clamping cylinder 10 is installed on the inner side of the fuselage column to clamp the mobile workbench downward. Two or four clamping cylinders 10 can be set according to the situation. The clamping cylinder body adopts a square structure, which can be well adapted to plane installation. One side of the clamping cylinder body is against the step surface below the fuselage belly plate 3, and the force is better, and the clamping cylinder fixing screws are not subject to shear force.

[0022] The utility model installs the reducer 12 inside the fuselage workbench 4, and the top is installed on the reducer 12 mounting plate 11, which can greatly reduce the height of the mobile platform. The mobile platform is made of medium and thick plates, which reduces the manufacturing cost and reduces the height of the mobile platform and the hydraulic press. The output shaft of the reducer 12 is installed with a pinion 13, and a long groove is opened in the middle lower part of the mobile platform. A straight-toothed rack 14 is installed on its side. The exposed part of the rack 14 is fixed on the bracket 15, and the bracket 15 is fixed on the rear end face of the flat mobile platform 6; the rack 14 is meshed with the pinion 13, and the reducer 12 drives the pinion 13 to rotate, and the pinion 13 drives the mobile platform to make a reciprocating linear motion through the rack 14. The rear end of the fuselage workbench 4 is symmetrically provided with a rear stop 16 to limit the rear side of the flat mobile platform 6.

[0023] The working process is as follows: before the flat plate moving platform 6 moves, the clamping cylinder 10 is relaxed, the piston rod of the lifting cylinder 8 is pushed upward, and the ejection block 9 is raised to lift the rollers 7 installed at the four corners of the flat plate moving platform 6, thereby driving the flat plate moving platform 6 and the mold to be lifted together, and the top of the ejection block 9 is flush with the guide surface on the fuselage workbench 4. The reducer 12 drives the pinion 13 to rotate, and the pinion 13 drives the flat plate moving platform 6 to make a linear motion through the rack 14, and the roller 7 rolls along the guide surface to move the flat plate moving platform 6 out.

[0024] The moving process is the opposite. After moving into place, the lifting cylinder 8 releases pressure to make the ejection block 9 fall down, and the rollers 7 at the four corners of the flat plate moving platform 6 fall into the grooves where the ejection block 9 is located. The large plane of the bottom surface of the flat plate moving platform 6 contacts the large plane of the top of the fuselage workbench 4, which can bear the working load. The pinion 13 and the rack 14 use straight teeth, and the tooth profile is parallel to the table surface of the fuselage workbench 4. When the flat plate moving platform 6 is lifted and dropped, the rack 14 has a slight displacement in the height direction, which does not affect the transmission.

[0025] The four corners of the flat plate moving platform 6 are processed into notches to install the rollers 7 respectively. After the rollers 7 are assembled with the roller bracket, they are integrally installed in the notches of the flat plate moving platform 6. There is no need to process the roller installation structure on the flat plate moving platform 6, which reduces the manufacturing difficulty.

[0026] The above description is only the preferred feasible embodiment of the utility model, which shows and describes the basic principle, main features and advantages of the utility model, but does not limit the scope of patent protection of the utility model. The technicians in this industry should understand that the utility model is not limited by the above embodiments. In addition to the above embodiments, the utility model can also have other implementation modes without departing from the spirit and scope of the utility model. The utility model will also have various changes and improvements. All technical solutions formed by equivalent replacement or equivalent transformation fall within the scope of protection required by the utility model. The scope of protection required by the utility model is defined by the attached claims and their equivalents. The technical features not described in the utility model can be achieved by or using existing technologies, which will not be repeated here.

Claims

1. A hydraulic press with a flat plate movable table, comprising a machine body, four corners of the machine body are respectively provided with columns, the lower parts of the columns are connected through a machine body workbench, guide rails are respectively embedded on both sides of the upper surface of the machine body workbench, and the four corners of the flat plate movable table are respectively supported on the guide rails through rollers, characterized in that: The lower edges of the four rollers are respectively located in the grooves of the machine body workbench, and a lifting cylinder is respectively installed at the bottom of each groove, and an ejection block is respectively installed at the top of the plunger of each lifting cylinder, and each ejection block is respectively located below the corresponding roller; The front and rear columns are connected through the fuselage belly plate, and the opposite end surfaces of the fuselage belly plates on both sides are symmetrically fixed with a clamping cylinder with a square cylinder body, the top of the cylinder body of the clamping cylinder is against the lower step surface of the fuselage belly plate, and the lower end of the plunger of the clamping cylinder is respectively pointed to the flat plate moving platform; A reducer is installed in the front side pit of the fuselage workbench, and the upper end of the output shaft of the reducer extends out of the upper surface of the fuselage workbench and is installed with a pinion; a long groove extending in the front and rear directions is provided in the middle of the lower end surface of the flat plate moving platform, and a rack is installed in the long groove, and the rack is meshed with the pinion through spur teeth.

2. The hydraulic press with a flat plate movable table according to claim 1, characterized in that: The lower end surfaces of the four corners of the flat-panel moving platform are respectively provided with thinned notches, and the rollers are respectively installed at the corresponding notches.

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