Hydraulic clamping device

Abstract

The utility model discloses a hydraulic clamping device which comprises a bottom plate I. The bottom plate I is provided with a first clamping assembly, a second clamping assembly, a third clamping assembly and a fourth clamping assembly, the first clamping assembly comprises a plurality of pressing mechanisms I and can press the upper end face of a part from the ends of the part, and the pressing mechanisms I are communicated through oil ways I; the second clamping assembly comprises a supporting mechanism used for being supported on the lower end face of the side portion of the part, a pressing mechanism II used for pressing the upper end face of the side portion of the part and a pressing mechanism III used for pressing the inner side face of the side portion of the part, and the pressing mechanism II corresponds to the supporting mechanism in the position height direction. The supporting mechanism, the pressing mechanism II and the pressing mechanism III are communicated through an oil way II, and a sequence valve is further installed on the oil way II between the supporting mechanism and the pressing mechanism II. Therefore, under the condition that the available oil path is insufficient, sequential action is realized when the oil cylinder is pressed by the device, and part deformation caused by pressing is avoided; the stability of the part size is guaranteed, and the production efficiency is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to clamp technical field especially relates to a hydraulic clamping device. BACKGROUND

[0002] In recent years, with the progress of society, hydraulic tooling as a simple, practical technical means is widely used in machining, gradually replacing manual tooling, and the hydraulic tooling improves the instability of the manual tooling compression force, through the control of the hydraulic system, ensures that the force is nearly the same every time, and the hydraulic transmission is stable and has no impact, and also reduces the accidents caused by the parts not being pressed, greatly improves the efficiency of clamping, and has strong competitiveness.

[0003] However, the current hydraulic tooling is usually positioned on each surface (side surface, ground surface and top surface) of the parts, generally includes a plurality of hydraulic cylinders and clamping parts, and when the hydraulic system is controlled, the plurality of hydraulic cylinders are usually controlled to act simultaneously (simultaneously pressed or simultaneously lifted), which will cause the deformation of the parts when pressed, so that the size after machining is unstable, and the plurality of hydraulic cylinders cannot realize sequential action, which may cause the problems of excessive deformation of the parts, poor consistency of the parts, high scrap rate of the parts and low production efficiency. CONTENT OF THE UTILITY MODEL

[0004] To solve the technical problems in the background art, the utility model provides a hydraulic clamping device.

[0005] The utility model discloses a hydraulic clamping device, including bottom plate I, install on bottom plate I:

[0006] First clamping assembly, including a plurality of pressing mechanism I, can press the upper end surface from each end of the parts, a plurality of pressing mechanism I is communicated through oil circuit I between the parts;

[0007] Second clamping assembly, including the support mechanism for supporting in the lower end surface of the parts side, the pressing mechanism II for pressing the upper end surface of the parts side and the pressing mechanism III for pressing the inner side surface of the parts side, the position height direction of pressing mechanism II and support mechanism correspond, support mechanism, pressing mechanism II and pressing mechanism III are communicated through oil circuit II between the parts, and the oil circuit II between support mechanism and pressing mechanism II is also installed with sequence valve.

[0008] Preferably, the first clamping assembly comprises three pressing mechanisms I, the three pressing mechanisms I are hydraulic oil cylinder III and a pressing block III driven by the hydraulic oil cylinder III, hydraulic oil cylinder IV and a pressing block IV driven by the hydraulic oil cylinder IV, and hydraulic oil cylinder V and a pressing block V driven by the hydraulic oil cylinder V, and the pressing surfaces of the pressing block III, the pressing block IV and the pressing block V are all matched with the profiles of the parts to be pressed at the corresponding positions.

[0009] Preferably, the supporting mechanism is hydraulic oil cylinder II, the pressing mechanism II comprises hydraulic oil cylinder I and a pressing block I driven by the hydraulic oil cylinder I, the up-down positions of the hydraulic oil cylinder II and the pressing block I are corresponding, and the pressing mechanism III is a single-acting cylinder located between the two side portions of the part.

[0010] Preferably, the lower end of the bottom plate I is further fixed with bottom plate II, and the sequence valve is fixed on the bottom plate II.

[0011] Preferably, the hydraulic oil cylinder III, the hydraulic oil cylinder IV and the hydraulic oil cylinder V are all fixed on the bottom plate I through bolts.

[0012] Preferably, the hydraulic oil cylinder II, the hydraulic oil cylinder I and the single-acting cylinder are all fixed on the bottom plate I through bolts.

[0013] In summary, the utility model has the following beneficial effects: the utility model discloses a scheme that first fills oil through the oil inlet of oil way I, multiple pressing mechanisms I act to start pressing the upper end faces of each end portion of the part, then the hydraulic oil enters through the oil inlet of oil way II, the pressing mechanism III presses, simultaneously, the hydraulic oil flows into the supporting mechanism along oil way II, the supporting mechanism starts to act, then the hydraulic oil flows into the sequence valve, a time difference is generated, the supporting mechanism completes the action, the hydraulic oil passing through the sequence valve flows into the oil inlet of the pressing mechanism II, the pressing mechanism II starts to act, the pressing mechanism II completes the pressing action, the hydraulic oil flows out from the oil outlet of the pressing mechanism II to complete the circulation, and the sequence valve installed on oil way II can complete the action of sequentially pressing the oil cylinder.

[0014] Additional aspects and advantages of the utility model will be partially given in the following description, partially will become obvious from the following description, or be understood through the practice of the utility model. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is the front view of the hydraulic clamping device of the utility model embodiment;

[0016] Figure 2 It is the perspective view of the hydraulic clamping device of the utility model embodiment;

[0017] Figure 3 Figure 9 is a bottom view of the oil circuit of the hydraulic clamping device of the embodiment of the present application;

[0018] Figure 4 Figure 10 is a top view of the oil circuit of the hydraulic clamping device of the embodiment of the present application;

[0019] Figure 5 Figure 11 is a three-dimensional structure diagram of the internal oil circuit of the hydraulic clamping device of the embodiment of the present application;

[0020] Figure 6 Figure 12 is a partial structure diagram of the hydraulic clamping device of the embodiment of the present application.

[0021] In the drawings:

[0022] 1, hydraulic cylinder I; 2, hydraulic cylinder II; 3, hydraulic cylinder III; 4, hydraulic cylinder IV; 5, hydraulic cylinder V; 6, bottom plate I; 7, bottom plate II; 8, sequence valve; 9, single-acting cylinder; 10, parts; 11, oil circuit I; 12, oil circuit II. DETAILED DESCRIPTION

[0023] The embodiments of the present application will be described in detail below, examples of which are shown in the drawings, wherein the same or similar symbols represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary and are only used to explain the present application, and cannot be understood as a limitation of the present application.

[0024] As shown in Figures 1-6 The hydraulic clamping device provided by the embodiment includes a bottom plate I 6, and the bottom plate I 6 is installed with:

[0025] A first clamping assembly includes a plurality of pressing mechanisms I capable of pressing the upper end surface of the parts 10 from each end thereof, and the plurality of pressing mechanisms I are communicated through an oil circuit I 11;

[0026] A second clamping assembly includes a supporting mechanism for supporting the lower end surface of the side portion of the parts 10, a pressing mechanism II for pressing the upper end surface of the side portion of the parts 10, and a pressing mechanism III for pressing the inner side surface of the side portion of the parts 10, the position height direction of the pressing mechanism II and the supporting mechanism correspond to each other, the supporting mechanism, the pressing mechanism II and the pressing mechanism III are communicated through an oil circuit II 12, and a sequence valve 8 is further installed on the oil circuit II between the supporting mechanism and the pressing mechanism II.

[0027] Further, the lower end of the bottom plate I 6 is further fixed with a bottom plate II 7, and the sequence valve 8 is fixed on the bottom plate II 7. Specifically, the bottom plate I 6 and the bottom plate II 7 are connected by bolts, and the sequence valve 8 is bolted on the bottom plate II 7.

[0028] It should be noted that the oil circuit Ⅰ 11 has an oil inlet and an oil outlet, and the oil circuit Ⅱ 12 also has an oil inlet and an oil outlet, and the oil circuit Ⅰ 11 and the oil circuit Ⅱ 12 are independent of each other and are independently controlled.

[0029] In this way, the oil is first introduced through the oil inlet of the oil circuit Ⅰ 11, the plurality of pressing mechanisms Ⅰ act to start pressing the upper end surface of each end portion of the pressed part 10, then the hydraulic oil enters through the oil inlet of the oil circuit Ⅱ 12, the pressing mechanism Ⅲ is pressed, and at the same time the hydraulic oil flows into the supporting mechanism along the oil circuit Ⅱ 12, the supporting mechanism starts to act, then the hydraulic oil flows into the sequence valve 8, a time difference is generated, the supporting mechanism completes the action, the hydraulic oil passing through the sequence valve 8 flows into the oil inlet of the pressing mechanism Ⅱ, the pressing mechanism Ⅱ starts to act, and the pressing mechanism Ⅱ completes the pressing action. The hydraulic oil flows out of the oil outlet of the pressing mechanism Ⅱ to complete the cycle. By installing the sequence valve 8 on the oil circuit Ⅱ 12, the sequential pressing action of the oil cylinder can be completed. It greatly increases the selection surface, can make the clamping more stable, reduces the deformation amount of the parts, and has good consistency; at the same time, the structure is simple and reliable, the cost is low, the scrap rate of parts is reduced, and the production efficiency is improved.

[0030] Further, as shown in Figure 1 and Figure 2 , the first clamping assembly includes three pressing mechanisms Ⅰ, which are: a hydraulic oil cylinder Ⅲ 3 and a pressing block Ⅲ driven thereby, a hydraulic oil cylinder Ⅳ 4 and a pressing block Ⅳ driven thereby, and a hydraulic oil cylinder Ⅴ 5 and a pressing block Ⅴ driven thereby. The pressing surfaces of the pressing block Ⅲ, the pressing block Ⅳ and the pressing block Ⅴ are all adapted to the profile of the part at the position to be pressed. For example, in the first embodiment, the pressing surfaces of the pressing block Ⅲ and the pressing block Ⅳ are arc-shaped, and the pressing surface of the pressing block Ⅴ is ring-shaped. Of course, the shape of the pressing surface of each pressing block is determined according to the part to be pressed, and is not limited in this regard.

[0031] Further, the supporting mechanism is provided as a hydraulic oil cylinder Ⅱ 2, the pressing mechanism Ⅱ includes a hydraulic oil cylinder Ⅰ 1 and a pressing block Ⅰ driven thereby, the hydraulic oil cylinder Ⅱ 2 and the pressing block Ⅰ correspond in position, and the pressing mechanism Ⅲ is provided as a single-acting cylinder 9, which is located between the two side portions of the part 10.

[0032] Preferably, the hydraulic oil cylinder Ⅲ 3, the hydraulic oil cylinder Ⅳ 4 and the hydraulic oil cylinder Ⅴ 5 are all fixed on the bottom plate Ⅰ 6 by bolts, and at the same time, the hydraulic oil cylinder Ⅱ 2, the hydraulic oil cylinder Ⅰ 1 and the single-acting cylinder 9 are all fixed on the bottom plate Ⅰ 6 by bolts.

[0033] In summary, as shown in Figures 3-6As shown, first, hydraulic oil flows in through the oil inlet of oil path Ⅰ 11 and the oil inlet of oil path Ⅱ 12, when hydraulic oil flows in oil path Ⅰ 11, hydraulic cylinder Ⅲ 3, hydraulic cylinder Ⅳ 4 and hydraulic cylinder Ⅴ 5 are pressed, then when hydraulic oil flows in oil path Ⅱ 12, single-acting cylinder 9 is pressed, at the same time, hydraulic oil flows in bottom plate Ⅱ 7 from the oil inlet, flows in hydraulic cylinder Ⅱ 2 along oil path Ⅱ 12, hydraulic cylinder Ⅱ 2 starts to act, then hydraulic oil flows in sequence valve 8, a time difference is generated, hydraulic cylinder Ⅱ 2 completes the action, hydraulic oil flowing through sequence valve 8 flows into the oil inlet of hydraulic cylinder Ⅰ 1, hydraulic cylinder Ⅰ 1 starts to act, hydraulic cylinder Ⅰ 1 completes the action, and the cycle is completed with hydraulic oil flowing out from the oil outlet of hydraulic cylinder Ⅰ 1.

[0034] The hydraulic clamping device in the embodiment is provided with oil path Ⅰ 11 and oil path Ⅱ 12, when oil path Ⅰ 11 works, hydraulic cylinder Ⅲ 3, hydraulic cylinder Ⅳ 4 and hydraulic cylinder Ⅴ 5 are pressed, when oil path Ⅱ 12 works, single-acting cylinder 9 is pressed, at the same time, hydraulic cylinder Ⅱ 2 starts to work, hydraulic oil flows in sequence valve 8, then flows in hydraulic cylinder Ⅰ 1, first pressing and then pressing are realized, the deformation amount of parts is reduced, the sequential movement of hydraulic cylinders is realized through the oil path Ⅱ 12 provided with a sequence valve, the deformation of parts caused by pressing is avoided, the stability of the size of parts is ensured, at the same time, the structure is simple, the cost is low, the reliability is high, the part scrap caused by the deformation of the blank is greatly reduced, and the production efficiency is improved.

[0035] It should be noted that the hydraulic clamping device in the embodiment can be controlled by a control mechanism, such as program code, to control the oil inlet sequence of oil path Ⅰ 11 and oil path Ⅱ 12, and the connection sequence of the two groups of oil paths can also be manually controlled, which is specific to the case.

[0036] It should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0037] In addition, the terms "first", "second", etc. are used only for descriptive purposes and should not be construed as indicating or implying relative importance or an indicated number of technical features. Therefore, the features defined as "first", "second" can explicitly or implicitly include at least one of the features. In the description of the present application, the meaning of "a plurality of" is at least two, such as two, three, etc., unless otherwise specifically limited.

[0038] In the present application, unless otherwise specifically defined and limited, the terms "mounting", "connection", "connection", "fixing" and the like should be broadly understood, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected or in communication with each other; it can be directly connected, or it can be indirectly connected through an intermediate medium, or it can be the internal communication or interaction relationship of two elements, unless otherwise specifically limited. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0039] In the present application, unless otherwise specifically defined and limited, the first feature is "on" or "under" the second feature. The first and second features can be in direct contact, or the first and second features can be in indirect contact through an intermediate medium. Moreover, the first feature "above", "above" and "above" the second feature can be directly above or obliquely above the first feature, or only indicate that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "below" and "below" the second feature can be directly below or obliquely below the first feature, or only indicate that the horizontal height of the first feature is less than that of the second feature.

[0040] The above is only a preferred specific embodiment of the present application, but the protection scope of the present application is not limited thereto. Any skilled person in the art can make equivalent replacement or change according to the technical scheme and the inventive concept of the present application within the technical range disclosed by the present application, which should be covered within the protection scope of the present application.

Claims

1. A hydraulic clamping device comprising a base plate I, characterized in that, The bottom plate I is provided with: The first clamping assembly comprises a plurality of pressing mechanisms I capable of pressing the upper end surface of the parts from each end thereof, and the plurality of pressing mechanisms I are communicated through an oil passage I; The second clamping assembly comprises a supporting mechanism for supporting the lower end surface of the side of the parts, a pressing mechanism II for pressing the upper end surface of the side of the parts, and a pressing mechanism III for pressing the inner surface of the side of the parts, the pressing mechanism II and the supporting mechanism correspond in position height direction, the supporting mechanism, the pressing mechanism II and the pressing mechanism III are communicated through an oil passage II, and a sequence valve is further arranged on the oil passage II between the supporting mechanism and the pressing mechanism II.

2. Hydraulic clamping device according to claim 1, characterized in that The first clamping assembly comprises three pressing mechanisms I, which are hydraulic cylinders III and pressing blocks III driven thereby, hydraulic cylinders IV and pressing blocks IV driven thereby, and hydraulic cylinders V and pressing blocks V driven thereby, the pressing surfaces of the pressing blocks III, the pressing blocks IV and the pressing blocks V are all adapted to the profiles of the parts at the corresponding pressing positions.

3. Hydraulic clamping device according to claim 1, characterized in that The supporting mechanism is a hydraulic cylinder II, the pressing mechanism II comprises a hydraulic cylinder I and a pressing block I driven thereby, the up and down positions of the hydraulic cylinder II and the pressing block I correspond, and the pressing mechanism III is a single-acting cylinder, which is located between the two sides of the parts.

4. Hydraulic clamping device according to claim 3, characterized in that The lower end of the bottom plate I is further fixed with a bottom plate II, and the sequence valve is fixed on the bottom plate II.

5. The hydraulic clamping device of claim 2, wherein The hydraulic cylinders III, the hydraulic cylinders IV and the hydraulic cylinders V are all fixed on the bottom plate I through bolts.

6. Hydraulic clamping device according to claim 3, characterized in that The hydraulic cylinders II, the hydraulic cylinders I and the single-acting cylinder are all fixed on the bottom plate I through bolts.

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