A fixed clamping device for sheet metal processing

Abstract

The utility model relates to sheet metal processing technical field, and disclose a kind of fixed clamping equipment for sheet metal processing, including fixed frame, moving frame, box and four support frames, adjusting assembly and extension assembly are equipped between fixed frame and moving frame, adjusting assembly includes three-phase asynchronous speed reducer, screw, spring and pawl, screw one end is rotatably connected in the side of fixed frame by bearing, the utility model realizes self-locking anti-back function by setting ratchet and pawl mechanism, effectively eliminate the microdisplacement problem in processing process;Adopt staggered distribution's U-shaped frame and trapezoidal slider structure enhance lateral rigidity, cooperate with ball bearing support system to realize load uniform distribution, significantly improve the stability of equipment after extension. The structural design effectively overcomes the defects of gravity center deviation and insufficient lateral torsional capacity in the prior art, is especially suitable for precision machining of large sheet metal parts, can ensure the clamping stability and positioning accuracy in processing process.

Description

Technical Field

[0001] This utility model relates to the field of sheet metal processing technology, specifically to a fixing and clamping device for sheet metal processing. Background Technology

[0002] Sheet metal processing involves cutting, punching, bending, and other processes on metal sheets to obtain the required parts. Before performing such processing on sheet metal, it is necessary to fix the sheet metal in place to prevent it from shifting during processing. In the field of sheet metal processing, the stability of the clamping equipment directly affects the processing accuracy.

[0003] Existing technologies, such as the clamping device disclosed in patent 202322666060.4, achieve length adjustment through a fixed sleeve rod and a telescopic rod, and use a support plate to prevent the middle part from sagging after extension. However, this solution has obvious drawbacks: the length adjustment relies solely on pin fixation and lacks an anti-reverse locking mechanism, making it prone to micro-displacement under processing vibration, resulting in insufficient clamping stability; the center of gravity shifts significantly after the base extends, and although a support plate is provided, its lateral torsional resistance is weak, especially when processing large-size sheet metal, which can easily cause equipment shaking. Therefore, a fixed clamping device for sheet metal processing is proposed. Utility Model Content

[0004] The purpose of this utility model is to provide a fixed clamping device for sheet metal processing, to solve the problems mentioned in the background art, such as the clamping device disclosed in patent 202322666060.4, which achieves length adjustment through a fixed sleeve rod and a telescopic rod, and uses a support plate to prevent the middle part from sagging after extension. However, this solution has obvious defects: the length adjustment relies only on the pin fixation and lacks an anti-reverse locking mechanism, which is prone to micro-displacement under processing vibration, resulting in insufficient clamping stability; the center of gravity shifts significantly after the base is extended, and although a support plate is provided, the lateral torsional resistance is weak, which can easily cause the equipment to shake, especially when processing large-size sheet metal.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a fixed clamping device for sheet metal processing, comprising a fixed frame, a movable frame, a housing and four support frames, wherein an adjustment component and an extension component are provided between the fixed frame and the movable frame;

[0006] The adjustment assembly includes a three-phase asynchronous geared motor, a lead screw, a spring, and a pawl. One end of the lead screw is rotatably connected to one side of the fixed frame via a bearing. A sleeve is fixedly connected to one side of the movable frame. The sleeve has an internal thread that matches the lead screw. A guide mechanism is provided between the fixed frame and the movable frame. A ratchet is sleeved on the outside of the lead screw. The ratchet is coaxially fixedly connected to the lead screw. The pawl is hinged to the housing via a pin. The spring forces the pawl to engage with the ratchet.

[0007] The extension assembly includes two staggered first U-shaped frames and second U-shaped frames, with the two first U-shaped frames fixed to one side of the fixed frame and the two second U-shaped frames fixed to one side of the movable frame.

[0008] Preferably, the top of the aforementioned housing is provided with a through groove, and the top of the pawl is movably connected to a handle through the through groove.

[0009] Preferably, the aforementioned housing is fixedly connected to one side of the mounting frame, and the output shaft of the three-phase asynchronous geared motor is drivenly connected to one end of the lead screw.

[0010] Preferably, the four support frames are fixed to the top of the fixed frame and the movable frame, respectively. A bolt is inserted into the top of the support frame, a compression plate is fixedly connected to the bottom of the bolt, and a fastening nut is sleeved on the outside of the bolt.

[0011] Preferably, the above-mentioned guiding mechanism includes two guide rods, one end of each guide rod is fixedly connected to one side of the fixed frame, and a guide cylinder is fixedly connected to the opposite side of the movable frame, with one end of each guide rod movably inserted into the guide cylinder.

[0012] Preferably, the bottom of both the first U-shaped frame and the second U-shaped frame is fixedly connected with several support columns, and ball bearings are movably embedded inside the support columns.

[0013] Preferably, a trapezoidal slider is fixedly connected to one side of the first U-shaped frame, and a trapezoidal groove adapted to the trapezoidal slider is provided on one side of the second U-shaped frame.

[0014] Preferably, the bottom of the fixed frame is fixedly connected to a support base, and the bottom of the movable frame is equipped with several rollers.

[0015] Compared with the prior art, the present invention, by adopting the above technical solution, has the following technical effects:

[0016] This invention achieves a self-locking and anti-reverse function through a ratchet-pawl mechanism, effectively eliminating micro-displacement problems during processing. The staggered U-shaped frame and trapezoidal slider structure enhance lateral rigidity, while the ball bearing support system ensures uniform load distribution, significantly improving the stability of the extended equipment. This structural design effectively overcomes the shortcomings of existing technologies, such as center of gravity shift and insufficient lateral torsional resistance, making it particularly suitable for the precision machining of large sheet metal parts, ensuring clamping stability and positioning accuracy during processing. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the fixing frame structure of this utility model;

[0019] Figure 2 This is a schematic diagram of the mobile frame structure of this utility model;

[0020] Figure 3 This is a schematic diagram of the mobile frame of this utility model from another perspective;

[0021] Figure 4 This is a schematic diagram of the first U-shaped frame structure of this utility model;

[0022] Figure 5 This is a schematic diagram of the cross-sectional structure of the box body of this utility model.

[0023] Explanation of reference numerals in the attached drawings: 1. Fixed frame; 2. Moving frame; 3. Support frame; 4. Bolt; 5. Extrusion plate; 6. Housing; 7. Adjustment assembly; 71. Three-phase asynchronous geared motor; 72. Ratchet; 73. Pawl; 74. Handle; 75. Spring; 76. Lead screw; 77. Sleeve; 78. Guide rod; 79. Guide cylinder; 710. Through groove; 8. Extension assembly; 81. First U-shaped frame; 82. Second U-shaped frame; 83. Trapezoidal slider; 84. Trapezoidal slide; 85. Support column; 86. Ball bearing; 9. Roller; 10. Support base. Detailed Implementation

[0024] 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.

[0025] It should be noted that the structures, proportions, sizes, etc., shown in the accompanying drawings of this specification are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed in the specification, and are not intended to limit the conditions under which this application can be implemented. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportions, or adjustments to the size should still fall within the scope of the technical content disclosed in this application, provided that they do not affect the effects and purposes that this application can produce.

[0026] Example 1

[0027] In the prior art, the clamping device disclosed in patent 202322666060.4 achieves length adjustment through a fixed sleeve rod and a telescopic rod, and uses a support plate to prevent the middle part from sagging after extension. However, this solution has obvious defects: the length adjustment relies solely on the pin fixation and lacks an anti-reverse locking mechanism, making it prone to micro-displacement under processing vibration, resulting in insufficient clamping stability; the center of gravity shifts significantly after the base is extended, and although a support plate is provided, its lateral torsional resistance is weak, which can easily cause the equipment to shake, especially when processing large-size sheet metal.

[0028] Please see Figure 1-5 This utility model provides a technical solution: a fixed clamping device for sheet metal processing, including a fixed frame 1, a movable frame 2, a housing 6, and four support frames 3. An adjustment component 7 and an extension component 8 are provided between the fixed frame 1 and the movable frame 2. A support base 10 is fixedly connected to the bottom of the fixed frame 1. Several rollers 9 are installed at the bottom of the movable frame 2. The support base 10 supports the fixed frame 1. When the movable frame 2 moves relative to the fixed frame 1, the rollers 9 reduce the friction between the movable frame 2 and the ground. The four support frames 3 are respectively fixed to the top of the fixed frame 1 and the movable frame 2 to form a four-corner clamping state. A bolt 4 is inserted into the top of the support frame 3. A pressing plate 5 is fixedly connected to the bottom of the bolt 4. A fastening nut is sleeved on the outside of the bolt 4. The movable frame 2 is moved relative to the fixed frame 1 by the adjustment component 7. After adjusting the space between them to accommodate the sheet metal sheet, the four corners of the sheet metal sheet are placed in the four support frames 3. The bolt 4 is rotated to make the pressing plate 5 move down to clamp and fix the upper surface of the sheet metal sheet. The position of the bolt 4 is fixed by the fastening nut.

[0029] The adjusting assembly 7 includes a three-phase asynchronous geared motor 71, a lead screw 76, a spring 75, and a pawl 73. One end of the lead screw 76 is rotatably connected to one side of the fixed frame 1 via a bearing. A sleeve 77 is fixedly connected to one side of the movable frame 2. The sleeve 77 has an internal thread that matches the lead screw 76. A guide mechanism is provided between the fixed frame 1 and the movable frame 2. The guide mechanism includes two guide rods 78. One end of the two guide rods 78 is fixedly connected to one side of the fixed frame 1. A guide cylinder 79 is fixedly connected to the opposite side of the movable frame 2. One end of the guide rod 78 is movably inserted into the guide cylinder 79. When the movable frame 2 moves relative to the fixed frame 1, the guide cylinder 79 moves relative to the guide rod 78, increasing the stability of the movement of the movable frame 2.

[0030] A ratchet 72 is sleeved on the outside of the lead screw 76. The ratchet 72 is coaxially and fixedly connected to the lead screw 76. The pawl 73 is hinged to the housing 6 by a pin. The spring 75 forces the pawl 73 to engage with the ratchet 72. A through slot 710 is opened on the top of the housing 6. The top of the pawl 73 moves through the through slot 710 and is fixedly connected to a handle 74. When it is necessary to reverse the lead screw 76, push the handle 74 to squeeze the spring 75. After the pawl 73 is disengaged from the ratchet 72, the three-phase asynchronous geared motor 71 reverses and drives the moving frame 2 to move back to reset through the lead screw 76. After releasing the handle 74, the pawl 73 is pushed into the ratchet 72 by the expansion of the spring 75 and re-engaged, realizing a quick reset. The housing 6 is fixedly connected to one side of the fixed frame 1. The output shaft of the three-phase asynchronous geared motor 71 is driven to one end of the lead screw 76. The three-phase asynchronous geared motor 71 is used to provide rotational power for the lead screw 76.

[0031] The working principle or structural principle is as follows: When clamping sheet metal, the three-phase asynchronous geared motor 71 drives the lead screw 76 to rotate. The internal thread of the sleeve 77 engages with the lead screw 76, causing the moving frame 2 to move along the guide rod 78. The roller 9 assists in displacement. The position between the four support frames 3 is adjusted until the sheet metal can be accommodated. After the sheet metal is placed between the support frames 3, the rotating bolt 4 presses down the pressing plate 5 to fix it, and then the locking nut is tightened to process the sheet metal. When reversing and resetting is required, the processed sheet metal is removed. First, the handle 74 is pulled to manually disengage the pawl 73 from the ratchet 72. Then, the three-phase asynchronous geared motor 71 is started to reverse and drive the moving frame 2 back. After releasing the handle 74, the spring 75 pushes the pawl 73 to re-engage the ratchet 72. The housing 6 protects the anti-reverse mechanism. The guide cylinder 79 and the guide rod 78 ensure the stability of movement. The surface of the guide rod 78 is coated with grease. The support seat 10 keeps the fixed frame 1 stable. The three-phase asynchronous geared motor 71 is a CLJSJ-CH02 model manufactured by Kunshan Taiya Electromechanical Technology Co., Ltd. Since its structure and operating principle are existing technologies, they will not be described in detail here. Spring 75 should be inspected and maintained regularly, and replaced promptly if found to be defective. A telescopic dust cover is installed on the outside of the lead screw 76, sealed and fixed at both ends, with a lubrication interface provided for regular grease replenishment.

[0032] Example 2

[0033] The extension component 8 includes two staggered first U-shaped frames 81 and second U-shaped frames 82. The two first U-shaped frames 81 are fixed to one side of the fixed frame 1, and the two second U-shaped frames 82 are fixed to one side of the movable frame 2. Several support columns 85 are fixedly connected to the bottom of both the first U-shaped frames 81 and the second U-shaped frames 82. Ball bearings 86 are movably embedded inside the support columns 85. When the second U-shaped frame 82 moves relative to the first U-shaped frame 81, the ball bearings 86 rotate within the support columns 85, reducing the friction between the second U-shaped frame 82 and the ground. A trapezoidal slider 83 is fixedly connected to one side of the first U-shaped frame 81, and a trapezoidal groove 84 adapted to the trapezoidal slider 83 is provided on one side of the second U-shaped frame 82. When the second U-shaped frame 82 moves relative to the first U-shaped frame 81, the trapezoidal slider 83 slides within the trapezoidal groove 84, increasing the stability of the movement of the second U-shaped frame 82.

[0034] In terms of working principle or structural principle, when the movable frame 2 moves outward relative to the fixed frame 1 via the adjusting component 7, the second U-shaped frame 82 fixed to the movable frame 2 moves accordingly. Its trapezoidal slide groove 84 slides along the trapezoidal slider 83 of the first U-shaped frame 81 of the fixed frame 1, ensuring uniform force distribution. The rolling balls 86 in the support column 85 reduce friction, allowing the second U-shaped frame 82 to extend and retract smoothly. The support seat 10 and the rollers 9 work together to maintain overall stability. This equipment requires regular or irregular maintenance, and timely replacement or adjustment of corresponding components to ensure normal operation. The trapezoidal slider 83 and the trapezoidal slide groove 84 must be fitted with an H7 / g6 tolerance to avoid jamming or shaking.

[0035] In summary, the three-phase asynchronous geared motor 71 drives the lead screw 76 to rotate, causing the movable frame 2 to move along the guide rod 78. The spacing of the support frame 3 is adjusted to clamp the sheet metal, and the bolt 4 and the pressing plate 5 are fixed together. During reset, pushing the handle 74 disengages the pawl 73 from the ratchet 72, and the three-phase asynchronous geared motor 71 reverses to drive the movable frame 2 back to its original position. In the extension assembly 8, the second U-shaped frame 82 slides with the trapezoidal slider 83 of the first U-shaped frame 81 through the trapezoidal groove 84. The ball bearings 86 reduce friction and ensure uniform force distribution. The support base 10 and the roller 9 maintain overall stability.

[0036] Those skilled in the art will understand that the features described in the various embodiments and / or claims of this utility model can be combined or combined in various ways, even if such combinations or combinations are not explicitly described in this utility model. In particular, the features described in the various embodiments and / or claims of this utility model can be combined or combined in various ways without departing from the spirit and teachings of this utility model. All such combinations and / or combinations fall within the scope of this utility model.

Claims

1. A fixing and clamping device for sheet metal processing, comprising a fixed frame (1), a movable frame (2), a housing (6), and four support frames (3), characterized in that, An adjustment assembly (7) and an extension assembly (8) are provided between the fixed frame (1) and the movable frame (2); The adjustment assembly (7) includes a three-phase asynchronous geared motor (71), a lead screw (76), a spring (75), and a pawl (73). One end of the lead screw (76) is rotatably connected to one side of the fixed frame (1) via a bearing. A sleeve (77) is fixedly connected to one side of the movable frame (2). The sleeve (77) has an internal thread that matches the lead screw (76). A guide mechanism is provided between the fixed frame (1) and the movable frame (2). A ratchet (72) is sleeved on the outside of the lead screw (76). The ratchet (72) is coaxially fixedly connected to the lead screw (76). The pawl (73) is hinged to the housing (6) via a pin. The spring (75) forces the pawl (73) to engage with the ratchet (72). The extension assembly (8) includes two staggered first U-shaped frames (81) and second U-shaped frames (82), with the two first U-shaped frames (81) fixed to one side of the fixed frame (1) and the two second U-shaped frames (82) fixed to one side of the movable frame (2).

2. The fixing and clamping device for sheet metal processing according to claim 1, characterized in that, The top of the box (6) is provided with a through groove (710), and the top of the pawl (73) is movably connected to the through groove (710) and fixedly connected with a handle (74).

3. The fixing and clamping device for sheet metal processing according to claim 1, characterized in that, The housing (6) is fixedly connected to one side of the fixed frame (1), and the output shaft of the three-phase asynchronous geared motor (71) is driven to one end of the lead screw (76).

4. The fixing and clamping device for sheet metal processing according to claim 1, characterized in that, The four support frames (3) are respectively fixed to the top of the fixed frame (1) and the movable frame (2). A bolt (4) is inserted into the top of the support frame (3), and a pressing plate (5) is fixedly connected to the bottom of the bolt (4). A fastening nut is sleeved on the outside of the bolt (4).

5. A fixing and clamping device for sheet metal processing according to claim 1, characterized in that, The guiding mechanism includes two guide rods (78), one end of which is fixedly connected to one side of the fixed frame (1), and a guide cylinder (79) is fixedly connected to the opposite side of the movable frame (2), with one end of the guide rod (78) movably inserted into the guide cylinder (79).

6. A fixing and clamping device for sheet metal processing according to claim 1, characterized in that, The bottom of the first U-shaped frame (81) and the second U-shaped frame (82) are fixedly connected with several support columns (85), and ball bearings (86) are movably embedded inside the support columns (85).

7. A fixing and clamping device for sheet metal processing according to claim 1, characterized in that, A trapezoidal slider (83) is fixedly connected to one side of the first U-shaped frame (81), and a trapezoidal groove (84) adapted to the trapezoidal slider (83) is provided on one side of the second U-shaped frame (82).

8. A fixing and clamping device for sheet metal processing according to claim 1, characterized in that, The bottom of the fixed frame (1) is fixedly connected to a support base (10), and the bottom of the movable frame (2) is equipped with several rollers (9).

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