Rotary positioning mechanism for stamping trapezoidal material sheets

Abstract

The utility model relates to the technical field of automation control, and discloses a rotary positioning mechanism for stamping trapezoidal material sheets, which comprises a frame, a first positioner and a second positioner, the first positioner and the second positioner are adjustable, a mounting plate is mounted on the frame, and the adjustable trapezoidal positioning clamp realizes rapid compatibility of the trapezoidal material sheets with different specifications. Compared with a traditional fixing clamp, the device universality is remarkably improved, sensor multi-source data fusion at different positions is combined, an intelligent control algorithm is matched, the inertia compensation problem in the asymmetric gravity center material sheet rotating process is solved, and the limitation that traditional open-loop control precision is insufficient is broken through; the material sheet positioning module, the rotation driving module and the detection control module adopt standardized interface design, so that disassembly and maintenance are convenient, and meanwhile, mechanism functions are flexibly expanded or adjusted according to production requirements.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the field of automation control technology, and concretely relates to a rotary positioning mechanism for trapezoidal sheet stamping. BACKGROUND

[0002] The background technology of the trapezoidal sheet automatic rotating mechanism mainly originates from the demand for processing special-shaped workpieces in industrial automatic production and the limitations of traditional processing methods in efficiency, accuracy and adaptability.

[0003] Modern industrial production is gradually transforming into a "small batch, multi-variety" mode. Trapezoidal sheets, as irregular geometric workpieces (such as trapezoidal metal plates, trapezoidal circuit board substrates, etc.), need to be frequently adjusted in posture during stamping, welding, assembly and other processes. Traditional fixed tooling or manual operation cannot meet the rapid changeover requirements, giving rise to the demand for self-adaptive automatic rotating mechanisms.

[0004] Example: In stamping production, enterprises often use a swing shear machine instead of a blanking die for products with an approximately trapezoidal outer contour to reduce die development costs. However, the swing shear machine has significant defects in its operating characteristics: the trapezoidal sheets cut by the swing shear machine are periodically flipped by 180° (such as Figure 1 ), which is seriously inconsistent with the fixed-angle feeding standard required by subsequent stamping dies (such as Figure 2 ). The current industry generally uses manual intervention, i.e., workers manually reorganize the sheets produced by the swing shear machine to ensure uniform angles before feeding them into subsequent processes. This manual correction mode not only significantly reduces the production rhythm (the reorganization time for a single batch can be 3-5 times the production line cycle time), disrupting the automation and continuity of the production line, but also significantly increases the overall production cost due to labor cost investment and potential quality risks (such as human error leading to angle deviation).

[0005] Therefore, the utility model is proposed. UTILITY MODEL CONTENT

[0006] To solve the above technical problems, the basic idea of the technical solution of the utility model is:

[0007] A rotary positioning mechanism for trapezoidal sheet stamping, comprising a sheet positioning module, a rotating drive module, and a detection control module.

[0008] The material sheet positioning module is used for positioning trapezoidal material sheets, and comprises a frame, and adjustable first and second positioners, the frame is provided with a mounting plate, the first and second positioners are fixed on the mounting plate, and different width trapezoidal material sheets are adapted through a long round hole adjusting mechanism; the rotary drive module comprises a rotary cylinder, the rotary cylinder is connected with a fixing sleeve through an output end, the rotary cylinder is connected with a rotary shaft through the fixing sleeve, the frame is provided with a lubricating guide sleeve, the mounting plate is provided with a limiting block, and the lubricating guide sleeve is provided with a buffer damping polyurethane block;

[0009] The detection control module is used for monitoring the rotary state of the material sheet and controlling the rotary process, and is provided with first and second sensors, the first and second sensors are installed at two groups of detection positions below the material sheet to change positions, and are installed at rotary shaft limiting buffer areas to judge rotary in-place signals, and the first and second sensors are connected to an embedded PLC controller.

[0010] As a preferred embodiment of the utility model, the lubricating guide sleeve and the rotary shaft adopt interference fit, the cooperation gap is between 0.01-0.03mm, axial positioning is carried out using a shaft baffle, and rotation stability is ensured.

[0011] As a preferred embodiment of the utility model, the sensing distance of the first and second sensors can be adjusted within the range of 5-20mm, the adjustment accuracy is ±0.2mm, and the signal can be accurately triggered when the material sheet rotates in place.

[0012] As a preferred embodiment of the utility model, the response time of the PLC controller to the control of the rotary cylinder is not more than 50ms, and the timeliness and accuracy of the material sheet rotary control are ensured.

[0013] As a preferred embodiment of the utility model, the error code rate of the PLC controller in data transmission is lower than 0.01%, and the communication stability and data accuracy of other equipment of the production line are ensured.

[0014] Compared with the prior art, the utility model has the following beneficial effects:

[0015] 1, adaptive positioning structure: adjustable trapezoidal positioning clamps realize the rapid compatibility of different specifications of trapezoidal material sheets, and the change type time is ≤5 minutes, compared with the traditional fixed clamps, the equipment versatility is significantly improved.

[0016] 2, double control mechanism: combining sensor multi-source data fusion at different positions, cooperating with an intelligent control algorithm, solving the inertia compensation problem in the rotary process of asymmetric gravity center material sheets, breaking through the limitation of insufficient precision of traditional open loop control.

[0017] 3. Modular design: the tablet positioning module, the rotary drive module, the detection control module adopt standardized interface design, convenient to disassemble and maintain, simultaneously support according to production demand flexible extension or adjustment mechanism function. The specific implementation mode of the utility model is described in further detail below in combination with the drawings. BRIEF DESCRIPTION OF DRAWINGS

[0018] In the drawings:

[0019] Figure 1 For the layout distribution of the material piece cut by the shearing machine;

[0020] Figure 2 For the layout distribution of the parts required during mold production;

[0021] Figure 3 For the tablet positioning module diagram of trapezoidal material;

[0022] Figure 4 For the upper and lower relationship diagram of the rotary drive module and trapezoidal material and positioning module.

[0023] In the drawings: 1, first sensor; 2, second sensor; 3, buffer shock absorbing polyurethane block; 4, rotary shaft; 5, lubricating guide sleeve; 6, frame; 7, fixed sleeve; 8, rotary cylinder; 9, first positioner; 10, second positioner; 11, mounting plate; 12, limit block. DETAILED DESCRIPTION

[0024] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model more clear, the technical scheme in the embodiments will be clearly and completely described below in combination with the drawings in the embodiments of the utility model, and the following embodiments are used to illustrate the utility model.

[0025] As Figures 1 to 4As shown, a trapezoidal piece punching rotary positioning mechanism, including piece positioning module, rotary drive module, detection control module, piece positioning module for positioning trapezoidal piece, containing frame 6 and adjustable first locator 9 and second locator 10, frame 6 is provided with mounting plate 11, first locator 9 and second locator 10 are fixed on mounting plate 11, and different width trapezoidal piece is adapted through long round hole adjusting mechanism; Rotary drive module includes rotary cylinder 8, rotary cylinder 8 is connected with fixed sleeve 7 through output end, rotary cylinder 8 is connected with rotary shaft 4 through fixed sleeve 7, frame 6 is equipped with lubricating guide sleeve 5, limiting block 12 is arranged on mounting plate 11, buffer shock polyurethane block 3 is arranged on lubricating guide sleeve 5, detection control module is used for monitoring the rotary state of the piece and controlling the rotary process, first sensor 1 and second sensor 2 are configured, first sensor 1 and second sensor 2 are installed in two groups below the detection position change of the piece, and are used for judging the rotation to position signal, first sensor 1 and second sensor 2 are connected to the built-in PLC controller.

[0026] Further, the lubricating guide sleeve 5 and the rotary shaft 4 are in interference fit, the fitting gap is between 0.01-0.03mm, the shaft is axially positioned by using the shaft stopper, and the rotation is stable.

[0027] Further, the sensing distance of the first sensor 1 and the second sensor 2 can be adjusted in the range of 5-20mm, the adjustment accuracy is ±0.2mm, and the signal is accurately triggered when the piece is rotated to the position.

[0028] Further, the response time of the PLC controller to the control of the rotary cylinder 8 is not more than 50ms, the timeliness and accuracy of the piece rotation control are ensured, the error rate of the PLC controller data transmission is less than 0.01%, and the communication stability and data accuracy of other equipment of the production line are ensured.

[0029] The implementation principle of the trapezoidal piece punching rotary positioning mechanism of the embodiment is as follows: the piece positioning module: the module adopts the positioning structure of adjustable two-side four-way first locator 9 and second locator 10, which is composed of four independent adjustable locators, corresponding to the four edges of the trapezoidal piece, and fixed on the same mounting plate 11; The first locator 9 and the second locator 10 realize horizontal displacement through the long round hole adjusting mechanism, which can flexibly adapt to trapezoidal pieces of different width specifications. Figure 4 )。

[0030] Rotary drive module: With the standard rotary cylinder 8 as the core power source, it is connected with the special rotary shaft 4 through the customized fixed sleeve 7. To ensure the stability and reliability of rotation, a special frame 6 structure is designed, and a lubricating guide sleeve 5 is installed in the frame 6 to accurately guide and lubricate the rotary shaft 4. At the same time, adjustable angle limiting block 12 and buffer shock absorbing polyurethane block 3 are set. The former can adjust the rotation angle limiting range of the material sheet according to the actual needs, and the latter can effectively absorb the impact force in the rotation process, reduce vibration and noise. This rotary drive module adopts standardized interface design, which can quickly adapt to different types of positioning modules, realize the rotation function switching of different angle trapezoidal material sheets, and has high universality and flexibility. Figure 3 ).

[0031] Detection control module: Four groups of industrial-grade first sensors 1 and second sensors 2 are configured to form a double detection mechanism: two groups of first sensors 1 and second sensors 2 are installed below the material sheet to monitor the position change of the material sheet in the rotation process in real time; the other two groups of first sensors 1 and second sensors 2 are arranged in the limiting and buffering area of the rotary shaft 4, which can accurately judge whether the material sheet reaches the preset rotation angle by sensing the trigger signal. The data collected by the first sensor 1 and the second sensor 2 are transmitted to the PLC controller, which can dynamically adjust the operating parameters of the rotary cylinder 8 according to the material sheet posture information, and ensure that the rotation angle error is controlled within ±0.5°. In addition, the PLC controller supports seamless communication with the production line equipment such as the swing shear machine and the stamping die, realizes real-time interaction of production instructions and precise cooperation of equipment operation rhythm.

Claims

1. A rotary positioning mechanism for stamping trapezoidal sheet metal, characterized in that, Including the positioning module of the material sheet, the rotary drive module, the detection control module; The positioning module of the material sheet is used for positioning the trapezoidal material sheet, and contains an adjustable first positioner (9) and a second positioner (10), and a frame (6) is provided with a mounting plate (11) on the frame (6); the first positioner (9) and the second positioner (10) are fixed on the mounting plate (11), and different width trapezoidal material sheets are adapted through a long circular hole adjusting mechanism; the rotary drive module comprises a rotary cylinder (8), the rotary cylinder (8) is connected with a fixing sleeve (7) through an output end, the rotary cylinder (8) is connected with a rotary shaft (4) through the fixing sleeve (7), the frame (6) is provided with a lubricating guide sleeve (5), the mounting plate (11) is provided with a limiting block (12), and the lubricating guide sleeve (5) is provided with a buffer shock absorbing polyurethane block (3); The detection control module is used for monitoring the rotary state of the material sheet and controlling the rotary process, and is provided with a first sensor (1) and a second sensor (2); the first sensor (1) and the second sensor (2) are installed in two groups below the detection position change of the material sheet, and are used for judging the rotary signal; the first sensor (1) and the second sensor (2) are connected to the built-in PLC controller.

2. A rotary positioning mechanism for use in the punching of trapezoidal webs as claimed in claim 1, characterized in that The lubricating guide sleeve (5) and the rotary shaft (4) adopt interference fit, the fitting gap is between 0.01-0.03mm, the shaft is axially positioned by using a baffle ring, and the rotation is stable.

3. A rotary positioning mechanism for use in the punching of trapezoidal webs as claimed in claim 1, characterized in that The sensing distance of the first sensor (1) and the second sensor (2) can be adjusted in the range of 5-20mm, the adjustment accuracy is ±0.2mm, and the signal can be accurately triggered when the material sheet is rotated to the position.

4. A rotary positioning mechanism for use in the punching of trapezoidal webs according to claim 1, characterized in that The response time of the PLC controller to the control of the rotary cylinder (8) is not more than 50ms, so that the timeliness and accuracy of the material sheet rotary control are ensured.

5. A rotary positioning mechanism for use in the punching of trapezoidal webs according to claim 4, characterized in that The error code rate of the PLC controller in data transmission is less than 0.01%, so that the communication stability and data accuracy of other equipment of the production line are ensured.

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