Rapid positioning clamp device of modularized automatic assembly line

Abstract

The utility model relates to the technical field of positioning clamps, in particular to a quick positioning clamp device of a modularized automatic assembly line, which comprises a base plate and a zero-point positioning tray, the zero-point positioning tray is clamped at the upper end of the base plate, a clamp component is fixedly connected at the upper end of the zero-point positioning tray, and the clamp component comprises a clamping mechanism. A clamping frame mechanism is fixedly connected to the lower end of the clamping mechanism, an air cylinder is installed on the inner side of the clamping frame mechanism, a jacking block is fixedly connected to the upper end of an air cylinder piston rod, the clamping mechanism comprises a fixing base, a through hole is formed in the bottom end of the fixing base, a sliding groove is formed in the inner side of the fixing base, and a rotating limiting shaft is rotationally connected to the inner side of the fixing base. According to the device, a workpiece is allowed to be freely placed at the initial stage of assembly, certain position deviation exists, the workpiece can be automatically matched with a clamp after being moved, manual repeated adjustment and alignment are not needed, and the placing difficulty of the workpiece is reduced.

Description

Technical Field

[0001] This utility model relates to the field of positioning fixture technology, specifically a rapid positioning fixture device for a modular automated assembly line. Background Technology

[0002] Positioning fixtures are important process equipment widely used in industrial fields such as machining and assembly. They are mainly used to accurately determine the position of the workpiece on machine tools, fixtures or other processing equipment during the machining or assembly process, and to reliably clamp and fix the workpiece to ensure the accuracy and quality of machining or assembly.

[0003] Some quick positioning fixtures are designed according to the shape of the workpiece and the processing requirements, and the positioning points and clamping points are determined. For example, the zero-point positioning system can quickly realize the installation and position change of the fixture through standardized interfaces and modular design, so that the fixture can adapt to different workpiece shapes.

[0004] However, while rapid positioning fixtures combined with zero-point positioning systems can quickly achieve the installation and position change of the fixture device, in order to ensure the clamping force on the workpiece, they usually do not leave too much degree of freedom between the fixture and the workpiece. This makes it difficult to place the workpiece with high accuracy and stability when it is placed in the fixture. Therefore, a rapid positioning fixture device for modular automated assembly lines is proposed to address the above problems. Utility Model Content

[0005] The purpose of this utility model is to provide a quick positioning fixture device for a modular automated assembly line, in order to solve the problem that while quick positioning fixtures combined with zero-point positioning systems can quickly realize the installation and position change of the fixture device, in order to ensure the clamping force on the workpiece, usually not much degree of freedom is reserved between the fixture and the workpiece. This makes it difficult to place the workpiece with high precision and stability when it is placed in the fixture.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A rapid positioning fixture device for a modular automated assembly line includes a base plate and a zero-point positioning tray. The zero-point positioning tray is snapped onto the upper end of the base plate. A fixture assembly is fixedly connected to the upper end of the zero-point positioning tray. The fixture assembly includes a clamping mechanism, and a clamping frame mechanism is fixedly connected to the lower end of the clamping mechanism. A cylinder is mounted inside the clamping frame mechanism, and a lifting block is fixedly connected to the upper end of the cylinder piston rod. The clamping mechanism includes a fixed base with a through hole at its bottom end and a sliding groove on its inner side. The clamping mechanism includes a rotatable limit shaft, a limit block fixedly connected to the outer side of the rotatable limit shaft, a first torsion spring fixedly connected to one side of the limit block, a telescopic rod slidably connected to the inner side of the limit block, a clamping block fixedly connected to one end of the telescopic rod, a slot between blocks being formed at the lower end of the clamping block, a support frame including a support frame, an installation slot being formed on the inner side of the support frame, a groove being formed on one side of the support frame, a rotating shaft fixedly connected to the inner side of the support frame, a rotating rod rotatably connected to the outer side of the rotating shaft, and a second torsion spring fixedly connected to the outer side of the rotating rod.

[0008] As a further optimization of this utility model, the inner side of the through hole is in contact with the outer side of the cylinder piston rod, the inner side of the sliding groove is slidably connected with a lifting block, the projection of the rotation limiting shaft in the vertical direction is "I" shaped, and the included angle between the rotation limiting shaft and the limiting block is 90°.

[0009] As a further optimization of this utility model, the limiting block is rectangular in shape, and there is a gap between the outer side of the limiting block and the fixed seat. Two first torsion springs are provided, and the two first torsion springs are symmetrically distributed on both sides of the limiting block. One end of the first torsion spring is fixedly connected to the fixed seat.

[0010] As a further optimization of this utility model, the telescopic rods are provided in multiple ways, and the multiple telescopic rods are parallel to each other. A portion of the telescopic rods is set in the limiting block, and a number of rubber strips are glued and fixed to one side of the clamping block.

[0011] As a further optimization of this utility model, the following features are provided: the support frame has rectangular projections in both the horizontal and vertical directions; the inner side of the mounting groove fits against the outer side of the cylinder; the groove has a rectangular shape; and the rotating shaft is set in the groove and forms a 90° angle with the support frame.

[0012] As a further optimization of this utility model, the rotating rod is L-shaped, one end of the rotating rod is arc-shaped, one end of the rotating rod is located inside the inter-block groove, the central axis of the second torsion spring coincides with the central axis of the rotating shaft, one end of the second torsion spring is fixedly connected to a support frame, there are two second torsion springs, and the two second torsion springs are symmetrically distributed on both sides of the rotating rod.

[0013] As a further optimization of this utility model, the lifting block is L-shaped, the end of the lifting block near the rotating rod is arc-shaped, the included angle between the cylinder piston rod and the lifting block is 90°, and the outer side of the lifting block is in close contact with the inner side of the sliding groove.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] In this invention, the fixture assembly allows the workpiece to be freely placed with a certain positional deviation in the early stage of assembly. After movement, it can automatically match the fixture without the need for repeated manual adjustments and alignment, reducing the difficulty of placing the workpiece. It can also automatically adjust the clamping method and force on the workpiece to a certain extent, eliminating redundant gaps between the fixture and the workpiece. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the fixture assembly structure of this utility model;

[0018] Figure 3 This is a cross-sectional structural diagram of the clamp assembly of this utility model;

[0019] Figure 4 This is a cross-sectional structural diagram of the clamping mechanism of this utility model;

[0020] Figure 5 This is a cross-sectional structural diagram of the clamping frame mechanism of this utility model;

[0021] Figure 6 This is a schematic diagram of the installation position of the lifting block of this utility model.

[0022] In the diagram: 1. Substrate; 2. Zero-point positioning tray;

[0023] 3. Fixture assembly;

[0024] 31. Clamping mechanism; 311. Fixed base; 312. Through hole; 313. Sliding groove; 314. Rotation limit shaft; 315. Limiting block; 316. First torsion spring; 317. Telescopic rod; 318. Clamping block; 319. Inter-block groove;

[0025] 32. Clamping frame mechanism; 321. Support frame; 322. Mounting slot; 323. Groove; 324. Rotating shaft; 325. Rotating rod; 326. Second torsion spring;

[0026] 33. Cylinder; 34. Lifting block. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0028] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0029] Please see Figure 1-6 This utility model provides a technical solution:

[0030] A rapid positioning fixture device for a modular automated assembly line includes a base plate 1 and a zero-point positioning tray 2. The zero-point positioning tray 2 is snapped onto the upper end of the base plate 1. A fixture assembly 3 is fixedly connected to the upper end of the zero-point positioning tray 2. The fixture assembly 3 includes a clamping mechanism 31. A clamping frame mechanism 32 is fixedly connected to the lower end of the clamping mechanism 31. A cylinder 33 is installed inside the clamping frame mechanism 32. A lifting block 34 is fixedly connected to the upper end of the piston rod of the cylinder 33. The clamping mechanism 31 includes a fixed seat 311. A through hole 312 is opened at the bottom end of the fixed seat 311. A sliding groove 313 is opened inside the fixed seat 311. A rotation limit shaft 314 is rotatably connected to the inside of the fixed seat 311. A limiting block 315 is fixedly connected to the outer side of the rotating limiting shaft 314. A first torsion spring 316 is fixedly connected to one side of the limiting block 315. A telescopic rod 317 is slidably connected to the inner side of the limiting block 315. A clamping block 318 is fixedly connected to one end of the telescopic rod 317. A block groove 319 is opened at the lower end of the clamping block 318. The clamping frame mechanism 32 includes a support frame 321. An installation groove 322 is opened on the inner side of the support frame 321. A groove 323 is opened on one side of the support frame 321. A rotating shaft 324 is fixedly connected to the inner side of the support frame 321. A rotating rod 325 is rotatably connected to the outer side of the rotating shaft 324. A second torsion spring 326 is fixedly connected to the outer side of the rotating rod 325.

[0031] As a further implementation of this solution, the inner side of the through hole 312 is fitted with the outer side of the piston rod of the cylinder 33, and the inner side of the sliding groove 313 is slidably connected with the lifting block 34. The projection of the rotation limit shaft 314 in the vertical direction is "I" shaped, and the included angle between the rotation limit shaft 314 and the limit block 315 is 90°. The inner side of the through hole 312 is tightly fitted with the outer side of the piston rod of the cylinder 33. This fitting relationship ensures the stable passage of the piston rod of the cylinder 33 within the through hole 312. When the piston rod reciprocates, it can effectively reduce radial sway and improve motion accuracy.

[0032] As a further implementation of this solution, the limiting block 315 is rectangular in shape, and a gap is provided between the outer side of the limiting block 315 and the fixed seat 311. Two first torsion springs 316 are provided, and the two first torsion springs 316 are symmetrically distributed on both sides of the limiting block 315. One end of the first torsion spring 316 is fixedly connected to the fixed seat 311. A certain gap is reserved between the outer side of the limiting block 315 and the fixed seat 311 to avoid excessive interference between components, so that the limiting block 315 will not be obstructed by the fixed seat 311 when rotating and resetting. The setting of the first torsion springs 316 provides the limiting block 315 with the reset elastic force, ensuring that the automatic reset function of the device is realized smoothly, thereby maintaining the continuous and efficient operation of the device.

[0033] As a further implementation of this solution, several telescopic rods 317 are provided, and the multiple telescopic rods 317 are parallel to each other. Part of the telescopic rods 317 are set in the limiting block 315. Several rubber strips are glued and fixed on one side of the clamping block 318. The setting of multiple telescopic rods 317 makes the movement of the clamping block 318 more stable. The rubber strips on one side of the clamping block 318 enable it to better clamp the edge of the workpiece.

[0034] As a further implementation of this solution, the support frame 321 has rectangular projections in both the horizontal and vertical directions. The inner side of the mounting groove 322 fits against the outer side of the cylinder 33. The groove 323 is rectangular in shape. The rotating shaft 324 is set in the groove 323 and forms a 90° angle with the support frame 321. The rotating rod 325 is L-shaped, with one end of the rotating rod 325 being arc-shaped and set inside the inter-block groove 319. The central axis of the second torsion spring 326 coincides with the central axis of the rotating shaft 324. One end of the second torsion spring 326 is fixedly connected to the support frame 321. There are two second torsion springs 326, which are symmetrically distributed on both sides of the rotating rod 325. The 90° angle design between the rotating shaft 324 and the support frame 321 ensures that the rotating rod 325 can achieve precise angle conversion and motion transmission when rotating around the rotating shaft 324. The alignment of the central axis and the setting of two second torsion springs 326 can prevent the rotating rod 325 from shifting or jamming due to unilateral force, ensuring the smooth movement and reset accuracy of the rotating rod 325, while enhancing the reliability of the device in vibration or shock environments.

[0035] As a further implementation of this solution, the lifting block 34 is L-shaped, with the end of the lifting block 34 near the rotating rod 325 being arc-shaped. The angle between the piston rod of the cylinder 33 and the lifting block 34 is 90°. The outer side of the lifting block 34 is in close contact with the inner side of the sliding groove 313. The arc-shaped design of the end of the lifting block 34 near the rotating rod 325 can prevent damage to the rotating rod 325 when the lifting block 34 comes into contact with it. The close contact between the outer side of the lifting block 34 and the inner side of the sliding groove 313 can ensure the stability of the lifting block 34 during the lifting process.

[0036] Workflow: During use, the zero-point positioning tray 2 is placed on the base plate 1 at a suitable position according to the shape of the workpiece to be clamped. The zero-point positioning tray 2 is locked to the base plate 1 by the locking pin at the lower end of the zero-point positioning tray 2, thus determining the position between the multiple clamping components 3. The workpiece is then placed on the clamping mechanism 31, at which point the workpiece will press down on the clamping block 318. The clamping block 318 drives the limiting block 315 to rotate via the telescopic rod 317. When the limiting block 315 rotates, it will cause the first torsion spring 316 to deform, moving the workpiece. After the workpiece has moved a certain distance, it will no longer exert a downward force on the clamping block 318, and the first torsion spring 316 will return to its original deformation and drive the limiting block 315 to reset. At this time, the workpiece will press down on the rotating rod 325, causing the rotating rod 325 to rotate. When the rotating rod 325 rotates, it will cause the fixedly connected second torsion spring 326 to deform. At the same time, one end of the rotating rod 325, which is located in the inter-block groove 319, will hook the clamping block 318. 8. The clamping block 318 causes the telescopic rod 317, which is fixedly connected, to extend a portion from the limiting block 315. The end of the limiting block 315 that contacts the workpiece is arc-shaped to reduce the friction between it and the workpiece and prevent scratching. When part of the workpiece falls onto the support frame 321, air is injected into the air inlet of the cylinder 33 through the air pipe, causing the piston rod of the cylinder 33 to extend upward and push the lifting block 34 upward. At this time, the upper end of the lifting block 34 pushes the limiting block 315 upward and closes the limit block 315. One end near the second torsion spring 326 will press against the second torsion spring 326, and the clamping block 318 will be fixed by the second torsion spring 326. One side of the clamping block 318 will be in close contact with the edge of the workpiece under the restriction of the second torsion spring 326. Several rubber strips provided on one side of the clamping block 318 can effectively prevent the workpiece from shaking. The device does not require the workpiece to be precisely aligned and placed between multiple clamping components 3. After placement, the workpiece can be moved to automatically match the workpiece with the clamping component 3, thereby completing the rapid clamping of the workpiece.

[0037] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A rapid positioning fixture device for a modular automated assembly line, comprising a base plate (1) and a zero-point positioning tray (2), characterized in that: The upper end of the base plate (1) is snapped with a zero-point positioning tray (2), and the upper end of the zero-point positioning tray (2) is fixedly connected with a clamping assembly (3). The clamping assembly (3) includes a clamping mechanism (31), and the lower end of the clamping mechanism (31) is fixedly connected with a clamping frame mechanism (32). A cylinder (33) is installed inside the clamping frame mechanism (32), and a lifting block (34) is fixedly connected to the upper end of the piston rod of the cylinder (33). The clamping mechanism (31) includes a fixed base (311), a through hole (312) at the bottom end of the fixed base (311), a sliding groove (313) on the inner side of the fixed base (311), a rotation limit shaft (314) rotatably connected to the inner side of the fixed base (311), a limit block (315) fixedly connected to the outer side of the rotation limit shaft (314), a first torsion spring (316) fixedly connected to one side of the limit block (315), a telescopic rod (317) slidably connected to the inner side of the limit block (315), a clamping block (318) fixedly connected to one end of the telescopic rod (317), and a block groove (319) at the lower end of the clamping block (318). The clamping mechanism (32) includes a support frame (321), an installation groove (322) is provided on the inner side of the support frame (321), a groove (323) is provided on one side of the support frame (321), a rotating shaft (324) is fixedly connected to the inner side of the support frame (321), a rotating rod (325) is rotatably connected to the outer side of the rotating shaft (324), and a second torsion spring (326) is fixedly connected to the outer side of the rotating rod (325).

2. The rapid positioning fixture device for a modular automated assembly line according to claim 1, characterized in that: The inner side of the through hole (312) is in contact with the outer side of the piston rod of the cylinder (33), and the inner side of the sliding groove (313) is slidably connected to the lifting block (34). The projection of the rotation limiting shaft (314) in the vertical direction is "I" shaped, and the included angle between the rotation limiting shaft (314) and the limiting block (315) is 90°.

3. The rapid positioning fixture device for a modular automated assembly line according to claim 1, characterized in that: The limiting block (315) is rectangular in shape. There is a gap between the outer side of the limiting block (315) and the fixed seat (311). There are two first torsion springs (316). The two first torsion springs (316) are symmetrically distributed on both sides of the limiting block (315). One end of the first torsion spring (316) is fixedly connected to the fixed seat (311).

4. The rapid positioning fixture device for a modular automated assembly line according to claim 1, characterized in that: Several telescopic rods (317) are provided, and the multiple telescopic rods (317) are parallel to each other. A part of the telescopic rod (317) is set in the limiting block (315), and several rubber strips are glued and fixed on one side of the clamping block (318).

5. The rapid positioning fixture device for a modular automated assembly line according to claim 1, characterized in that: The support frame (321) has rectangular projections in both the horizontal and vertical directions. The inner side of the mounting groove (322) fits against the outer side of the cylinder (33). The groove (323) has a rectangular shape. The rotating shaft (324) is set in the groove (323) and forms an angle of 90° with the support frame (321).

6. The rapid positioning fixture device for a modular automated assembly line according to claim 1, characterized in that: The rotating rod (325) is L-shaped, with one end of the rotating rod (325) being arc-shaped and located inside the inter-block groove (319). The central axis of the second torsion spring (326) coincides with the central axis of the rotating shaft (324). One end of the second torsion spring (326) is fixedly connected to a support frame (321). There are two second torsion springs (326), which are symmetrically distributed on both sides of the rotating rod (325).

7. The rapid positioning fixture device for a modular automated assembly line according to claim 1, characterized in that: The lifting block (34) is L-shaped, and the end of the lifting block (34) near the rotating rod (325) is arc-shaped. The included angle between the piston rod of the cylinder (33) and the lifting block (34) is 90°. The outer side of the lifting block (34) is in close contact with the inner side of the sliding groove (313).

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