A centering scribing fixture

Abstract

This utility model discloses a centering and marking fixture. The supporting mechanism includes a fixed base, an electric lifting mechanism mounted on the fixed base, and an electric extension mechanism fixed to the side of the electric lifting mechanism. The centering mechanism includes a connecting frame mounted below the telescopic end of the electric extension mechanism, slide rails fixedly connected to both sides of the lower end of the connecting frame, a lead screw drive component rotatably connected to the lower end of the connecting frame, a moving block movably connected to the slide rails and the lead screw drive component, a connecting rod assembly rotatably connected to the connecting frame and the moving block, and rolling components mounted on the side of the connecting frame and both sides of the moving block. The marking mechanism includes a clamp mounted on the connecting rod assembly, a fixed sleeve threadedly connected to the clamp, and a marking pen detachably mounted in the clamp. This utility model achieves centering and marking of the workpiece by adjusting the electric extension and lifting mechanism, and the lead screw driving the moving block to realize the synchronous movement of the connecting rod assembly. It also facilitates the replacement of the marking pen and reduces the physical labor and operational intensity of the operator.

Description

Technical Field

[0001] This utility model relates to the field of scribing technology, specifically to a center scribing fixture. Background Technology

[0002] Centering marking is a crucial step in precision machining, designed to ensure the workpiece remains correctly positioned and centered during processing, thereby improving machining accuracy. In many production processes, especially in the machining of square or strip-shaped workpieces, precise centering marking can effectively prevent deviations and ensure the smooth progress of subsequent machining steps.

[0003] Existing technology uses manual tools to center strip workpieces. While this can meet basic needs in some simple situations, it is significantly lacking in terms of accuracy, efficiency, and flexibility. Manual adjustment is prone to human error, and the adjustment process is cumbersome and inefficient, increasing labor intensity and the risk of errors during production.

[0004] Therefore, this utility model provides a centering and marking clamp. Summary of the Invention

[0005] The purpose of this utility model is to provide a centering and marking fixture to solve the problems existing in the above-mentioned background art.

[0006] To achieve the above-mentioned technical effects, this utility model is implemented through the following technical solution: a centering and marking fixture, including a support mechanism, a centering mechanism and a marking mechanism.

[0007] Furthermore, the support mechanism includes a fixed base, an electric lifting mechanism mounted on the fixed base, and an electric extension mechanism fixed to the side end of the electric lifting mechanism; the centering mechanism includes a connecting frame mounted below the telescopic end of the electric extension mechanism, slide rails fixedly connected to both sides of the lower end of the connecting frame, a lead screw drive component rotatably connected to the lower end of the connecting frame, a moving block movably connected to the slide rails and the lead screw drive component, a connecting rod assembly rotatably connected to the connecting frame and the moving block, and rolling components mounted on the side end of the connecting frame and both sides of the moving block; the marking mechanism includes a clamp mounted on the connecting rod assembly, a fixed sleeve threadedly connected to the clamp, and a marking pen detachably installed in the clamp.

[0008] Furthermore, the lead screw drive includes a lead screw rotatably connected to the middle of the lower end of the connecting frame and a motor fixedly connected to the side of the lower end of the connecting frame, wherein the drive shaft of the motor is fixedly connected to the side end of the lead screw.

[0009] Furthermore, the lower end of the moving block is provided with a sliding sleeve, which is connected to the lead screw.

[0010] Furthermore, the linkage assembly includes a first rotating rod rotatably connected to the lower end side of the connecting frame and a second rotating rod rotatably connected to the moving block. The first and second rotating rods are of equal length, the outer end of the second rotating rod is fixedly connected to the sleeve, and the outer end of the first rotating rod is rotatably connected to the sleeve.

[0011] Furthermore, the rolling element includes a connecting rod fixedly connected to the side end of the connecting frame and both sides of the moving block, and a rolling sleeve rotatably connected to the connecting rod.

[0012] Furthermore, the lower end of the sleeve is provided with multiple elastic claws, and the inner end of each elastic claw is provided with an anti-slip rubber pad.

[0013] The beneficial effects of this utility model are: In this invention, the horizontal and vertical adjustments are achieved through an electric extension mechanism and an electric lifting mechanism; the lead screw drives the moving block to move, achieving synchronous movement of the first and second rotating rods, and the first and second rotating rods are of equal length, forming a symmetrical structure similar to an isosceles triangle, enabling the marking pen to center and mark lines on the workpiece; the design of the fixed sleeve and elastic gripper allows for easy installation or replacement of the marking pen, making it suitable for marking operations on square and strip-shaped workpieces, greatly reducing the physical labor and operational intensity of the operator. Attached Figure Description

[0014] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the centering mechanism of this utility model; Figure 3 This is a schematic diagram of the centering mechanism after adjustment. Figure 4 This is a schematic diagram of the internal structure of the marking mechanism of this utility model; Figure 5 This is a schematic diagram of the rolling element structure of this utility model; The attached diagram lists the components represented by each number as follows: 1. Support mechanism; 11. Fixed seat; 12. Electric lifting mechanism; 13. Electric extension mechanism; 2. Centering mechanism; 21. Connecting frame; 22. Slide rail; 23. Screw drive component; 231. Screw; 232. Motor; 24. Moving block; 25. Linkage assembly; 251. First rotating rod; 252. Second rotating rod; 26. Rolling component; 261. Connecting rod; 262. Roller sleeve; 31. Clamping sleeve; 311. Elastic gripper; 312. Anti-slip pad; 32. Fixed sleeve; 33. Marking pen. Detailed Implementation

[0016] 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 skilled in the art without creative effort are within the protection scope of the present utility model.

[0017] Example 1 See Figures 1 to 5 As shown, a centering and marking fixture includes a support mechanism 1, a centering mechanism 2, and a marking mechanism 3.

[0018] The support mechanism 1 includes a fixed base 11, an electric lifting mechanism 12 mounted on the fixed base 11, and an electric extension mechanism 13 fixed to the side of the electric lifting mechanism 12; the centering mechanism 2 includes a connecting frame 21 mounted below the telescopic end of the electric extension mechanism 13, slide rails 22 fixedly connected to both sides of the lower end of the connecting frame 21, a lead screw drive 23 rotatably connected to the lower end of the connecting frame 21 via bearing seats, a moving block 24 movably connected to the slide rails 22 and the lead screw drive 23, a connecting rod assembly 25 rotatably connected to the connecting frame 21 and the moving block 24, and rolling elements 26 mounted on the side of the connecting frame 21 and both sides of the moving block 24; the marking mechanism 3 includes a clamp 31 mounted on the connecting rod assembly 25, a fixed sleeve 32 threadedly connected to the clamp 31, and a marking pen 33 detachably mounted inside the clamp 31.

[0019] The mounting base 11 can be fixedly connected to the production line or to the assembly line.

[0020] The lead screw drive component 23 includes a lead screw 231 rotatably connected to the middle of the lower end of the connecting frame 21 via a bearing seat, and a motor 232, such as a stepper motor or a servo motor, fixedly connected to the side of the lower end of the connecting frame 21. The drive shaft of the motor 232 and the side end of the lead screw 231 are fixedly connected by a coupling.

[0021] The lower end of the movable block 24 is provided with sliders on both sides, and the sliders and the slide rail 22 are slidably connected. The lower end of the movable block 24 is provided with a sliding sleeve, which is a ball bearing sleeve, and the ball bearing sleeve is connected to the lead screw 231.

[0022] The connecting rod assembly 25 includes a first rotating rod 251 rotatably connected to the lower side of the connecting frame 21 via a rotating shaft, and a second rotating rod 252 rotatably connected to the moving block 24 via a rotating shaft. The first rotating rod 251 and the second rotating rod 252 are of equal length. The outer end of the second rotating rod 252 is fixedly connected to the clamp 31, and the outer end of the first rotating rod 251 is rotatably connected to the clamp 31 via the rotating sleeve.

[0023] The rolling element 26 includes a connecting rod 261 fixedly connected to the side end of the connecting frame 21 and both sides of the moving block 24, and a rolling sleeve 262 rotatably connected to the connecting rod 261 through a bearing sleeve.

[0024] The lower end of the sleeve 31 is provided with multiple elastic grippers 311, and the inner end of each elastic gripper 311 is provided with an anti-slip rubber pad 312. When the fixed sleeve 32 is rotated, the elastic grippers 311 are pressed and retract simultaneously, thus fixing the marking pen 33 in place.

[0025] The electric lifting mechanism 12 and the electric extension mechanism 13 are both conventional electric telescopic mechanisms. Driven by an electric motor, the electric lifting mechanism achieves the vertical lifting of the clamp, while the electric extension mechanism achieves the horizontal extension of the clamp. The operator can adjust these two mechanisms through an external controller to precisely control the position and angle of the clamp.

[0026] All standard parts used in this utility model can be purchased from the market, and irregular parts can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the prior art. The electric telescopic mechanism, parts and equipment all adopt conventional models in the prior art. In addition, the circuit connection adopts conventional connection methods in the prior art, which will not be described in detail here. The contents not described in detail in this specification belong to the prior art known to those skilled in the art.

[0027] Example 2 The operating principle of this utility model: This invention is used for centering and scribing operations on square or strip-shaped workpieces.

[0028] In use, the extension length of the electric extension mechanism 13 and the height of the electric lifting mechanism 12 are first adjusted by the control platform so that the rolling element 26 on one side of the connecting frame 21 contacts the side of the workpiece, while the other side of the workpiece will contact the rolling element of the moving block 24, thereby achieving the centering of the scribing pen 33 on the workpiece.

[0029] When the rolling element 26 on one side of the connecting frame 21 contacts the side of the workpiece, the control motor 232 starts, driving the lead screw 231 to rotate. The rotation of the lead screw 231 pushes the moving block 24 to slide along the slide rail 22. The movement of the moving block 24 causes the first rotating rod 251 and the second rotating rod 252 to move synchronously. When the moving block 24 moves away from the motor 232, the first and second rotating rods will move closer together synchronously; conversely, when the moving block 24 moves closer to the motor 232, the first and second rotating rods will move apart synchronously. In this way, it is possible to adjust according to the width of the workpiece.

[0030] When the rolling element 26 on the moving block 24 contacts the other side of the workpiece, the first and second rotating rods simultaneously press against both sides of the workpiece. Since the first rotating rod 251 and the second rotating rod 252 are of equal length, their movement resembles the structure of an isosceles triangle, where the two equal rotating rods, like the two equal sides of an isosceles triangle, always remain symmetrical. As the moving block 24 moves, the two rotating rods synchronously approach or open, ensuring that the clamping force is symmetrical and evenly distributed on both sides of the workpiece. Because the connecting part of the rotating rods is always aligned with the center of the workpiece, this symmetrical structure ensures that the workpiece is always in the correct centered position during clamping, thereby ensuring that the workpiece will not shift during the scribing operation and ensuring a high-precision scribing effect.

[0031] When installing or replacing the marking pen 33, the operator only needs to rotate the fixing sleeve 32 upward to release the compression of the elastic jaws 311 at the lower end of the clamping sleeve 31. The multiple elastic jaws 311 open, and the marking pen 33 is placed into the clamping sleeve. The operator then contacts the tip of the marking pen with the workpiece, and then rotates the fixing sleeve 32 downward so that the multiple elastic jaws 311 close synchronously after being pressed by the fixing sleeve 32, firmly clamping the marking pen 33 and ensuring that the pen tip is stable and not easy to loosen during the marking process.

Claims

1. A centering and marking fixture, comprising a support mechanism (1), a centering mechanism (2), and a marking mechanism (3), characterized in that: The support mechanism (1) includes a fixed base (11), an electric lifting mechanism (12) mounted on the fixed base (11), and an electric extension mechanism (13) fixed to the side of the electric lifting mechanism (12); the centering mechanism (2) includes a connecting frame (21) mounted below the telescopic end of the electric extension mechanism (13), a slide rail (22) fixedly connected to both sides of the lower end of the connecting frame (21), a screw drive (23) rotatably connected to the lower end of the connecting frame (21), a moving block (24) movably connected to the slide rail (22) and the screw drive (23), a connecting rod assembly (25) rotatably connected to the connecting frame (21) and the moving block (24), and a rolling element (26) mounted on both sides of the connecting frame (21) and the moving block (24); the marking mechanism (3) includes a sleeve (31) mounted on the connecting rod assembly (25), a fixed sleeve (32) threadedly connected to the sleeve (31), and a marking pen (33) detachably mounted in the sleeve (31).

2. The centering scribing fixture according to claim 1, characterized in that, The lead screw drive (23) includes a lead screw (231) rotatably connected to the middle of the lower end of the connecting frame (21) and a motor (232) fixedly connected to the side of the lower end of the connecting frame (21). The drive shaft of the motor (232) is fixedly connected to the side end of the lead screw (231).

3. The centering scribing fixture according to claim 1, characterized in that, The lower end of the moving block (24) is provided with a sliding sleeve, which is connected to the lead screw (231).

4. A centering scribing fixture according to claim 1, characterized in that, The linkage assembly (25) includes a first rotating rod (251) rotatably connected to the lower side of the connecting frame (21) and a second rotating rod (252) rotatably connected to the moving block (24). The first rotating rod (251) and the second rotating rod (252) are of equal length. The outer end of the second rotating rod (252) is fixedly connected to the sleeve (31), and the outer end of the first rotating rod (251) is rotatably connected to the sleeve (31).

5. A centering scribing fixture according to claim 1, characterized in that, The rolling element (26) includes a connecting rod (261) fixedly connected to the side end of the connecting frame (21) and both sides of the moving block (24), and a rolling sleeve (262) rotatably connected to the connecting rod (261).

6. A centering scribing fixture according to claim 1, characterized in that, The lower end of the sleeve (31) is provided with a plurality of elastic claws (311), and the inner end of the elastic claws (311) is provided with an anti-slip pad (312).

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