Clamping device for hydraulic machinery

Abstract

The utility model relates to the technical field of hydraulic equipment, in particular to a clamping device for hydraulic machinery, which comprises a rack, a workbench is arranged at the lower end of the rack, an extrusion table is arranged on the rack above the workbench, and both the workbench and the extrusion table are provided with mounting grooves. One end of the mounting groove extends to the working surface of the working table or the extrusion table, the other end of the mounting groove penetrates through the side wall of the working table or the extrusion table, and the cross section of the mounting groove is inverted-T-shaped; the sides, close to the opening end of the mounting groove, of the workbench and the extrusion table are both connected with abutting plates, one ends of the two abutting plates are both connected with the workbench or the extrusion table through hinges, the other ends of the two abutting plates are both connected with the workbench or the extrusion table through bolts, and the two abutting plates are both provided with abutting columns. The two abutting columns extend into the mounting grooves through the opening ends of the corresponding mounting grooves correspondingly and are used for abutting against the structures, located in the corresponding mounting grooves, of the corresponding molds. According to the utility model, an operator can replace the die conveniently.

Description

Technical Field

[0001] The utility model relates to the technical field of hydraulic equipment, in particular to a clamping device used for hydraulic machinery. Background Art

[0002] A hydraulic press is a machine that uses liquid as the working medium to transfer energy to achieve various processes. In addition to forging and forming, hydraulic presses can also be used for correction, press fitting, packaging, block pressing and plate pressing. Hydraulic presses include water presses and oil presses. The one that uses water-based liquid as the working medium is called a water press, and the one that uses oil as the working medium is called an oil press. According to the direction of the force, there are two types of hydraulic presses: vertical and horizontal. Most hydraulic presses are vertical, while hydraulic presses for extrusion are mostly horizontal.

[0003] Among them, the vertical hydraulic press mainly includes a frame, a hydraulic system, a pressure cylinder, an upper die and a lower die. A workbench for placing workpieces is arranged under the frame. The pressure cylinder is arranged at the upper end of the frame, and the lower end of the pressure cylinder is connected to the upper die. The lower die is arranged on the workbench. The material to be pressed is placed inside the lower die, and material processing can be carried out.

[0004] The method of fixing the mold commonly used by processing plants is: use a mounting plate, first place the lower mold on the mounting plate, then fix the lower mold and the mounting plate with four bolts, and then install a mounting plate on the workbench with four bolts and four small plywood. The four small plywoods are pressed on the four corners of the mounting plate respectively, and each small plywood is connected to the mounting slot on the workbench by bolts. The installation method of the upper mold is the same as that of the lower mold. The above-mentioned method of fixing the mold is characterized in that the mounting plate used is large in area, which is convenient for fixing molds of different sizes, and the mold processing difficulty is relatively low. As for the mounting structure of the mold, it is only necessary to open a few bolt holes below the lower mold and above the upper mold. When installing the lower mold, the bolts are passed from the bottom of the mounting plate through the mounting plate and threadedly connected to the bolt holes at the bottom of the upper mold. The installation of the upper mold is just the opposite. The mounting plate can be used repeatedly, which can reduce the material used for the mold. The disadvantage is that when replacing the mold, the two mounting plates need to be removed first, and then the upper and lower molds are removed, and then the new mold is installed on the mounting plate, and finally the mounting plate is fixed on the workbench. In this process, a large number of structures and bolts need to be disassembled and installed, which makes the process of replacing the mold more troublesome. Utility Model Content

[0005] The utility model aims to provide a clamping device for hydraulic machinery to solve the problem that the process of replacing molds is troublesome.

[0006] The utility model is realized by the following technical solutions:

[0007] A clamping device for hydraulic machinery comprises a frame, a workbench is arranged at the lower end of the frame, an extrusion table is arranged on the frame above the workbench, and the workbench and the extrusion table are both provided with mounting grooves, one end of the mounting groove extends to the working surface of the workbench or the extrusion table, and the other end passes through the side wall of the workbench or the extrusion table, one end of two mounting grooves passing through the workbench or the extrusion table is an open end, and the cross-sectional shape of the mounting groove is an inverted T shape; abutment plates are connected to one side of the workbench and the extrusion table close to the open end of the mounting groove, one end of the two abutment plates are connected to the workbench or the extrusion table by a hinge, and the other end is connected to the workbench or the extrusion table by bolts, and abutment columns are arranged on the two abutment plates, and the two abutment columns extend to the inside of the mounting groove through the open ends of the corresponding mounting grooves respectively, and the two abutment columns are used to abut against the structure of the corresponding mold located inside the corresponding mounting groove.

[0008] Furthermore, the two inner side walls of the two installation grooves are both planes, and the dimensions of the cross sections of the two installation grooves along the horizontal direction gradually decrease as they move away from the corresponding opening ends.

[0009] Furthermore, the inner bottom walls of the two installation grooves are both arranged horizontally, the inner top walls are both arranged inclinedly, and the ends of the inner top walls of the two installation grooves away from the opening ends of the corresponding installation grooves are the lowest inclined ends.

[0010] Furthermore, threaded holes are provided on the workbench and the extrusion table on the corresponding side of the two installation grooves, and through holes are provided on the two abutment plates. When the two abutment columns are respectively pressed against the structures of the corresponding molds located inside the corresponding installation grooves, the two bolts pass through the corresponding through holes and are threadedly connected with the corresponding threaded holes, and gaps are left between the two abutment plates and the corresponding workbench or extrusion table.

[0011] Compared with the prior art, the utility model has the following advantages and beneficial effects:

[0012] In the utility model, it is necessary to use an upper mold and a lower mold that are compatible with the workbench and the extrusion table, that is, a mounting structure for being placed in the mounting groove is provided above the upper mold and below the lower mold, and the cross-sectional shape of the mounting structures of the upper mold and the lower mold is an inverted T-shape. The mounting structures of the upper mold and the lower mold are respectively inserted into the mounting grooves from the opening ends of the corresponding mounting grooves, and the upper mold and the lower mold can be confined in the corresponding mounting grooves through the mounting grooves and the inverted T-shaped structures of the mounting structures. Subsequently, the corresponding molds are pressed together by two abutment plates, and the abutment plates are connected to the workbench or the extrusion table by bolts, so that the two abutment columns respectively press the mounting structures of the corresponding molds in the corresponding mounting grooves, thereby realizing the clamping of the molds. The utility model omits the steps of disassembling and installing multiple bolts in the process of replacing the molds, which brings convenience to the processing personnel in replacing the molds. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The drawings described herein are used to provide a further understanding of the embodiments of the present utility model, constitute a part of this application, and do not constitute a limitation of the embodiments of the present utility model.

[0014] In the attached picture:

[0015] Figure 1 It is a structural schematic diagram of the utility model;

[0016] Figure 2 It is a schematic diagram of the workbench of the utility model, which is intended to show the shape of the installation slot;

[0017] Figure 3 This is a cross-sectional view of the workbench of the utility model, which is intended to show the shape of the mounting groove.

[0018] Marks and corresponding parts names in the attached drawings:

[0019] 1. Frame; 2. Workbench; 3. Extrusion table; 4. Mounting groove; 5. Abutment plate; 6. Abutment column; 7. Threaded hole; 8. Upper die; 9. Lower die; 10. Through hole. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in combination with the embodiments and drawings. The schematic implementation mode and description of the utility model are only used to explain the utility model and are not intended to limit the utility model. It should be noted that the utility model is already in the actual development and use stage.

[0021] Example 1

[0022] A clamping device for hydraulic machinery, referring to Figure 1 , Figure 2 , combined with Figure 3, including a frame 1, a workbench 2 is arranged at the lower end of the frame 1, an extrusion table 3 is arranged on the frame 1 above the workbench 2, and mounting grooves 4 are opened on the workbench 2 and the extrusion table 3, one end of the mounting groove 4 extends to the working surface of the workbench 2 or the extrusion table 3, and the other end passes through the side wall of the workbench 2 or the extrusion table 3, and one end of the two mounting grooves 4 passing through the workbench 2 or the extrusion table 3 is an open end, and the cross-sectional shape of the mounting groove 4 is an inverted T shape; abutment plates 5 are connected to one side of the workbench 2 and the extrusion table 3 near the open end of the mounting groove 4, one end of the two abutment plates 5 is connected to the workbench 2 or the extrusion table 3 by a hinge, and the other end is connected to the workbench 2 or the extrusion table 3 by bolts, and abutment columns 6 are arranged on the two abutment plates 5, and the two abutment columns 6 extend to the inside of the mounting groove 4 through the open ends of the corresponding mounting grooves 4, respectively, and the two abutment columns 6 are used to abut against the structure of the corresponding mold located inside the corresponding mounting groove 4.

[0023] In this scheme, it is necessary to use an upper mold 8 and a lower mold 9 that are compatible with the mounting grooves 4 on the workbench 2 and the extrusion table 3, that is, a mounting structure for being placed in the mounting groove 4 is provided above the upper mold 8 and below the lower mold 9, and the cross-sectional shape of the mounting structures of the upper mold 8 and the lower mold 9 are both inverted T-shaped, and the mounting structures of the upper mold 8 and the lower mold 9 are respectively inserted into the mounting groove 4 from the open ends of the corresponding mounting grooves 4, and the upper mold 8 and the lower mold 9 can be confined in the corresponding mounting grooves 4 through the mounting grooves 4 and the inverted T-shaped structures of the mounting structures, and then the corresponding molds are pressed together by two abutment plates 5, and the abutment plates 5 are connected to the workbench 2 or the extrusion table 3 by bolts, so that the two abutment columns 6 respectively press the mounting structures of the corresponding molds in the corresponding mounting grooves 4, thereby realizing the clamping of the molds. The utility model omits the steps of disassembling and installing multiple bolts in the process of replacing the mold, which brings convenience to the processing personnel in replacing the mold.

[0024] Example 2

[0025] Based on Example 1, in this example, reference Figure 1 , Figure 2 , combined with Figure 3 The two inner side walls of the two mounting grooves 4 are both planes, and the size of the cross-section of the two mounting grooves 4 along the horizontal direction gradually decreases as they move away from the corresponding opening ends, that is, the size of one end of the two mounting grooves 4 close to their opening ends is larger than the other end. After the mounting structure of the mold is inserted into the corresponding mounting groove 4, the mounting structure of the corresponding mold is tightly abutted against the two inner side walls of the corresponding mounting groove 4 through the abutment columns 6 on the abutment plate 5, so that the mold can be clamped and fixed in the horizontal direction with fewer bolts.

[0026] Example 3

[0027] Based on Example 2, in this example, refer to Figure 1 , Figure 2 , combined with Figure 3 The inner bottom walls of the two mounting grooves 4 are both arranged horizontally, and the inner top walls are both arranged inclinedly. The inner bottom wall described in this embodiment refers to the bottom wall of the mounting groove 4 close to the ground, and the inner top wall refers to the inner top wall of the mounting groove 4 away from the ground, and the end of the inner top walls of the two mounting grooves 4 away from the opening end of the corresponding mounting groove 4 is the lowest inclined end. In addition, the upper surfaces of the upper mold 8 and the lower mold 9 are also arranged inclined, and the inclined surfaces of the upper mold 8 and the lower mold 9 are respectively matched with the inner top walls of the corresponding mounting groove 4; after the mounting structure of the mold is inserted into the corresponding mounting groove 4, the mounting structure of the corresponding mold is pressed against the two inner side walls of the corresponding mounting groove 4 by the abutment columns 6 on the abutment plate 5, and at the same time, the inner top walls of the two mounting grooves 4 can press the inclined upper surface of the corresponding mold, so that the mold can be clamped and fixed in the horizontal and vertical directions by fewer bolts.

[0028] Example 4

[0029] Based on Example 1, in this example, reference Figure 1 , threaded holes 7 are provided on the workbench 2 and the extrusion table 3 on the corresponding side of the two installation grooves 4, and through holes 10 are provided on the two abutment plates 5. When the two abutment columns 6 are respectively pressed against the structures of the corresponding molds located inside the corresponding installation grooves 4, the two bolts pass through the corresponding through holes 10 and are threadedly connected with the corresponding threaded holes 7, and gaps are left between the two abutment plates 5 and the corresponding workbench 2 or extrusion table 3, so that the two abutment columns 6 can fully play their respective roles of pressing against the molds, so that the abutment plates 5 can install the molds more firmly.

[0030] The specific implementation methods described above further illustrate the purpose, technical solutions and beneficial effects of the utility model in detail. It should be understood that the above description is only the specific implementation method of the utility model and is not used to limit the protection scope of the utility model. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the utility model should be included in the protection scope of the utility model.

Claims

1. A clamping device for a hydraulic machine, comprising a frame (1), a workbench (2) being arranged at the lower end of the frame (1), and a pressing table (3) being arranged on the frame (1) above the workbench (2), characterized in that: The workbench (2) and the extrusion table (3) are both provided with a mounting groove (4), one end of the mounting groove (4) extends to the working surface of the workbench (2) or the extrusion table (3), and the other end passes through the side wall of the workbench (2) or the extrusion table (3), one end of the two mounting grooves (4) passing through the workbench (2) or the extrusion table (3) is an open end, and the cross-sectional shape of the mounting groove (4) is an inverted T-shape; one side of the workbench (2) and the extrusion table (3) close to the open end of the mounting groove (4) Both are connected with abutment plates (5), one end of each of the two abutment plates (5) is connected to the workbench (2) or the extrusion table (3) by a hinge, and the other end is connected to the workbench (2) or the extrusion table (3) by bolts, and both abutment columns (6) are provided on the two abutment plates (5), and the two abutment columns (6) extend into the interior of the installation groove (4) through the opening ends of the corresponding installation grooves (4), respectively, and the two abutment columns (6) are used to abut against the structure of the corresponding mold located in the interior of the corresponding installation groove (4).

2. A clamping device for hydraulic machinery according to claim 1, characterized in that: The two inner side walls of the two installation grooves (4) are both planes, and the dimensions of the cross sections of the two installation grooves (4) along the horizontal direction gradually decrease as they move away from the corresponding opening ends.

3. A clamping device for hydraulic machinery according to claim 2, characterized in that: The inner bottom walls of the two installation grooves (4) are both arranged horizontally, and the inner top walls are both arranged inclinedly, and the ends of the inner top walls of the two installation grooves (4) away from the opening ends of the corresponding installation grooves (4) are the lowest inclined ends.

4. A clamping device for hydraulic machinery according to claim 1, characterized in that: The workbench (2) and the extrusion table (3) on the corresponding side of the two installation grooves (4) are both provided with threaded holes (7), and the two abutment plates (5) are both provided with through holes (10). When the two abutment columns (6) are respectively pressed against the structure of the corresponding mold located inside the corresponding installation groove (4), the two bolts pass through the corresponding through holes (10) and are threadedly connected with the corresponding threaded holes (7), and a gap is left between the two abutment plates (5) and the corresponding workbench (2) or extrusion table (3).

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