Displacement detection structure for main cylinder of double-acting seal head press

Abstract

A double-acting seal head press main cylinder displacement detection structure comprises a double-acting seal head press, the double-acting seal head press comprises an inner main cylinder and an outer cylinder, the outer cylinder is distributed on the periphery of the inner main cylinder, an outer pressing plate is movably installed on a guide column, a piston rod of the inner main cylinder is connected with an inner pressing head, and an annular guide rail is fixedly arranged on the periphery of the inner pressing head. A sliding block is movably installed on the annular guide rail, a stay wire displacement sensor is fixedly arranged on the inner main cylinder, the sliding block is located under the stay wire displacement sensor, and a stay wire of the stay wire displacement sensor is vertically downwards connected with the sliding block. When the inner pressure head rotates and the sliding block deviates from the position under the stay wire displacement sensor to cause the stay wire to be inclined to the vertical direction, the sliding block can rapidly move along the annular guide rail and reset to the position under the stay wire displacement sensor along with acting force generated by downward movement of the inner pressure head on the stay wire. The stay wire of the stay wire displacement sensor is always kept in the vertical direction, the accuracy of displacement measurement is ensured, and the product percent of pass is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to mechanical field especially, relates to hydraulic forming equipment, and particularly is a double acting head press main cylinder displacement detection structure. BACKGROUND

[0002] Double acting head press is a kind of hydraulic forming equipment.Double acting head press includes outer pressure plate and inner pressure head, and outer pressure plate is located at the outer periphery of inner pressure head, and the inner piston rod of main cylinder and outer cylinder is connected with outer pressure plate and inner pressure head respectively, and outer pressure plate is used to fix the edge of plate, and inner pressure head provides main forming force.The displacement monitoring of inner pressure head is the key link to ensure the precision of pressing process and product quality.In prior art, the displacement of inner pressure head is measured by using pull wire displacement sensor, and pull wire displacement sensor converts displacement signal into electrical signal output, and pull wire displacement sensor is fixed on press, and its pull wire is connected to the lower end of inner pressure head.However, in actual pressing process, since inner pressure head lacks guiding and aligning mechanism, inner pressure head can self-rotate, so that the pull wire changes from parallel to vertical direction to inclined to vertical direction, resulting in inaccurate displacement measurement, and further leading to the increase of product unqualified rate. SUMMARY

[0003] The utility model aims at providing a double acting head press main cylinder displacement detection structure, and the double acting head press main cylinder displacement detection structure solves the technical problem of inaccurate displacement measurement caused by the self-rotation of inner pressure head in prior art.

[0004] The double acting head press main cylinder displacement detection structure of the utility model includes double acting head press, and double acting head press includes base, four guide columns are fixedly arranged on the base, a fixed seat is fixedly arranged on the upper side of four guide columns, one inner main cylinder and two or more outer cylinders are fixedly arranged on the lower side of fixed seat, the outer cylinders are distributed at the outer periphery of inner main cylinder, an outer pressure plate is movably installed on guide column, the piston rod of outer cylinder is fixedly connected with outer pressure plate, the center of outer pressure plate is provided with through hole, the piston rod of inner main cylinder is fixedly connected with inner pressure head after passing through the through hole, annular guide rail is fixedly arranged at the outer periphery of inner pressure head, sliding block is movably installed on annular guide rail, pull wire displacement sensor is fixedly arranged on inner main cylinder, and sliding block is directly below pull wire displacement sensor, and the pull wire of pull wire displacement sensor is connected with sliding block vertically downward.

[0005] Further, T-shaped sliding groove is arranged in annular guide rail, T-shaped limiting structure that cooperates with T-shaped sliding groove is arranged at the bottom of sliding block, and roller is arranged at the both sides of T-shaped limiting structure.

[0006] The utility model discloses a double -action seal head press main cylinder displacement detection structure compared with prior art, its effect is positive and obvious. BRIEF DESCRIPTION OF DRAWINGS

[0007] Figure 1 It is a front view schematic diagram of a double -action seal head press main cylinder displacement detection structure of the utility model.

[0008] Figure 2 It is Figure 1 the partial enlarged schematic diagram.

[0009] Figure 3 It is a plan view schematic diagram of the annular guide rail and the slider in the double -action seal head press main cylinder displacement detection structure of the utility model. DETAILED DESCRIPTION

[0010] The utility model makes further description below combining with embodiment, but the utility model is not limited to this embodiment, and all should be included in the protection scope of the utility model to all similar changes of adopting the utility model. The use of upper, lower, front, back, left, right, middle, inside, outside and the like directions in the utility model is only for the convenience of clear description, and not the limitation of the technical scheme of the utility model.

[0011] As Figures 1-3 The utility model discloses a double -action seal head press main cylinder displacement detection structure, including double -action seal head press, and the double -action seal head press includes base 1, and four guide columns 2 are fixedly arranged on base 1, and the upper side of four guide columns 2 is fixedly arranged with fixed seat 3, and the lower side of fixed seat 3 is fixedly arranged with one inner main cylinder 4 and two or more number of outer cylinders 5, and the outer cylinder 5 is distributed at the outer periphery of inner main cylinder 4, and the outer pressure plate 6 is movably installed on guide column 2, and the piston rod of outer cylinder 5 is fixedly connected with outer pressure plate 6, and the center of outer pressure plate 6 is provided with through -hole, and the piston rod of inner main cylinder 4 is fixedly connected with inner pressure head 7 after passing through the through -hole, and the outer periphery of inner pressure head 7 is fixedly arranged with annular guide rail 8, and the slider 9 is movably installed on annular guide rail 8, and the inner main cylinder 4 is fixedly arranged with pull wire displacement sensor 10, and the slider 9 is located the lower side of pull wire displacement sensor 10, and the pull wire 13 of pull wire displacement sensor 10 is vertically connected with slider 9.

[0012] Further, the annular guide rail 8 is provided with a T-shaped sliding groove 11, and the bottom of the slider 9 is provided with a T-shaped limiting structure 12 matched with the T-shaped sliding groove 11, and the two sides of the T-shaped limiting structure 12 are respectively provided with a roller 14.

[0013] Specifically, the specific structure and principle of the double-acting head press, the inner main cylinder 4, the outer cylinder 5, the outer pressing plate 6, the inner pressing head 7, and the pull wire displacement sensor 10 in the utility model and other unexplained places all adopt the known scheme in the prior art, and those skilled in the art are all aware of it, which will not be repeated here.

[0014] When the double-acting head press of the utility model is used, the piston rod of the outer cylinder 5 drives the outer pressing plate 6 to move downward to fix the edge of the plate material, then the piston rod of the inner main cylinder 4 drives the inner pressing head 7 to move downward to provide the main forming force. In the working process, when the inner pressing head 7 rotates, the slider 9 deviates from the position directly below the pull wire displacement sensor 10, causing the pull wire 13 to be inclined to the vertical direction, the force generated by the inner pressing head 7 moving downward on the pull wire 13 enables the slider 9 to quickly move along the annular guide rail 8 and reset to the position directly below the pull wire displacement sensor 10, so that the pull wire 13 of the pull wire displacement sensor 10 always remains in the vertical direction, ensuring the accuracy of displacement measurement and improving the product qualification rate.

Claims

1. A double-action head press main cylinder displacement detection structure, characterized by, The utility model relates to a double-acting head press machine, which comprises a base, four guide columns fixedly arranged on the base, a fixed seat fixedly arranged on the upper side of the four guide columns, one inner main cylinder and two or more outer cylinders fixedly arranged on the lower side of the fixed seat, the outer cylinders being distributed on the outer periphery of the inner main cylinder, an outer pressing plate movably installed on the guide column, the piston rod of the outer cylinder being fixedly connected with the outer pressing plate, the center of the outer pressing plate being provided with a through hole, the piston rod of the inner main cylinder being fixedly connected with an inner pressing head after penetrating through the through hole, the outer periphery of the inner pressing head being fixedly provided with an annular guide rail, a sliding block being movably installed on the annular guide rail, a pull wire displacement sensor being fixedly arranged on the inner main cylinder, the sliding block being located directly below the pull wire displacement sensor, and the pull wire of the pull wire displacement sensor being connected with the sliding block vertically downward.

2. The displacement detection structure of the main cylinder of a double-action press according to claim 1, characterized by The annular guide rail is provided with a T-shaped sliding groove, the bottom of the sliding block is provided with a T-shaped limiting structure matched with the T-shaped sliding groove, and two rollers are arranged on the two sides of the T-shaped limiting structure.

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