Square tube laser cutting special-shaped hole positioning device

Abstract

The utility model discloses a square tube laser cutting special-shaped hole positioning device which comprises an I-shaped frame and a supporting table plate fixed to one side of the interior of the I-shaped frame, front blocking seats are fixed to the two end faces of the top end of the supporting table plate respectively, and two symmetrical concentric-square-shaped frames are fixed to the top end, on one sides of the front blocking seats, of the supporting table plate. A connecting rod two-way swinging and pushing structure is arranged in the center of the top end of the supporting table plate, a rear sliding plate and a front sliding plate which are used for being in sliding fit with the top end of the concentric-square-shaped frame are installed at the movable end of the connecting rod two-way swinging and pushing structure, and right-angle bases are fixed to the outer walls of the sides, away from each other, of the rear sliding plate and the front sliding plate. According to the utility model, the workpiece does not need to be manually screwed and pressed up and down, so that the operation cycle and time cost of workpiece clamping are reduced, and the clamping force and the position of the workpiece can be accurately controlled through the matched work of the rotary self-locking unit and the right-angle seat, so that the positioning accuracy of the square tube workpiece is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of square pipe laser cutting, in particular to a positioning device for laser cutting special-shaped holes in square pipes. Background Technique

[0002] The positioning device of the square pipe workpiece plays a crucial role in the process of laser cutting special-shaped holes. Its main functions include precise positioning, improving cutting accuracy, increasing production efficiency, and ensuring safety. The positioning device usually consists of a clamping device, positioning pins or blocks, and a support structure. The clamping device ensures the stable fixation of the workpiece through adjustable fixtures or clamps. The positioning pins or blocks accurately align the position of the workpiece, and the support structure provides a stable basic support. These components together ensure that the workpiece does not move or swing during the cutting process, thus ensuring the accuracy and consistency of the cutting path. For example, a positioning and pressing device for high-precision laser special-shaped cutting disclosed in the authorized publication number CN212145006U includes a bottom plate. The upper surface of the bottom plate is fixedly connected with a shell. A guide groove is opened in the middle of the upper surface of the shell. Both the left and right sides of the inner bottom side wall of the shell are fixedly connected with support plates. A bidirectional threaded rod is inserted into the top of the outer side surface of the support plate. A first bevel gear is sleeved on the middle of the outer surface of the bidirectional threaded rod. A support block is fixedly connected to the front side of the inner bottom side wall of the shell. A rotating rod is inserted into the top of the front surface of the support block. A second bevel gear is sleeved on the rear side of the outer surface of the rotating rod. The second bevel gear meshes with the first bevel gear. By pushing the pressing plate to move through the second spring and pushing the fixing plate through the first spring, the limiting rod is inserted into the limiting hole, realizing the pressing and fixing of the steel plate. However, in the above technical solution, during the use process, the staff still needs to manually perform operations such as screwing and pressing the workpiece up and down. That is, the entire operation process depends on manpower. In a high-frequency and large-scale production environment, the operator needs to repeat these operations continuously, which is prone to fatigue and operation errors. Moreover, manually screwing and pressing the workpiece also consumes a considerable amount of time and energy of the operator, which has an adverse impact on the production efficiency of the square pipe workpiece. Content of the Utility Model

[0003] The purpose of the utility model is to provide a positioning device for laser cutting special-shaped holes in square pipes. The square pipe fitting to be fixed is placed through the loop-shaped frame, and the rotating self-locking unit makes the connecting rod bidirectional swing and push structure act until the right-angle seat presses the square pipe workpiece against the front stop seat, so as to solve the problems raised in the above background technique.

[0004] To achieve the above object, the present utility model provides the following technical solution: A positioning device for laser cutting special-shaped holes in square tubes, including an I-shaped frame and a supporting platform plate fixed on one side inside the I-shaped frame. Both end faces of the top of the supporting platform plate are fixed with front retaining seats. Two symmetrical return frames are fixed on the top of the supporting platform plate on one side of the front retaining seats. A connecting rod bi-directional swing and push structure is arranged at the central position of the top of the supporting platform plate. The movable ends of the connecting rod bi-directional swing and push structure are respectively installed with a rear sliding plate and a front sliding plate that are slidably matched with the top of the return frame. Right-angle seats are fixed on the outer walls of the mutually remote sides of the rear sliding plate and the front sliding plate. A rotary self-locking unit for driving the connecting rod bi-directional swing and push structure to work is installed at the bottom of the I-shaped frame.

[0005] Preferably, the I-shaped frame includes a top plate, a bottom plate, and four rectangular square columns for connecting the top plate and the bottom plate.

[0006] Preferably, a sliding guiding structure is arranged between the bottom ends of the rear sliding plate and the front sliding plate and the top of the supporting platform plate. The sliding guiding structure is a rectangular cutting groove arranged on the top of the supporting platform plate and a sliding seat slidably installed inside the rectangular cutting groove. The top end of the sliding seat penetrates to the outside of the rectangular cutting groove.

[0007] Preferably, the connecting rod bi-directional swing and push structure includes a main shaft rotatably installed at the central position inside the I-shaped frame and a middle arm fixed at one end of the surface of the main shaft. Link single bodies are hinged at both ends of the middle arm. The end of the link single body away from the middle arm is hinged with the back of the rear sliding plate or the back of the front sliding plate.

[0008] Preferably, both the right-angle seat and the front retaining seat are made of components of aluminum alloy material.

[0009] Preferably, the rotary self-locking unit includes a stepping motor installed at the bottom of the I-shaped frame and a worm and gear transmission structure installed at the output end of the stepping motor for driving the main shaft to rotate.

[0010] Compared with the prior art, the beneficial effect of the present utility model is that: This positioning device for laser cutting special-shaped holes in square tubes has structures such as a connecting rod bi-directional swing and push structure and a right-angle seat that cooperate with each other. Compared with traditional manual operations, this automated clamping structure can significantly reduce the manual intervention of operators, so that operators no longer need to manually screw and press the workpiece up and down, thereby reducing the operation cycle and time cost of workpiece clamping. Moreover, the cooperative work of the rotary self-locking unit and the right-angle seat can also accurately control the clamping force and the position of the workpiece, thereby improving the positioning accuracy of the square tube workpiece and ensuring that each workpiece always maintains a stable position and posture during the cutting process. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is the front view structural schematic diagram of the present utility model;

[0012] Figure 2 is a schematic side view structure of the present utility model;

[0013] Figure 3 is a schematic three - dimensional structure of the present utility model Figure 1 ;

[0014] Figure 4 is a schematic three - dimensional structure of the present utility model Figure 2 ;

[0015] Figure 5 is a schematic three - dimensional structure of the present utility model Figure 3 ;

[0016] In the figure: 1, I - shaped frame; 2, support platform plate; 201, U - shaped frame; 202, rectangular cut - out groove; 3, rear sliding plate; 4, front sliding plate; 5, link double - way swing - push structure; 501, main shaft; 502, middle - positioned arm; 503, link monomer; 6, right - angle seat; 7, front stop seat; 8, rotary self - locking unit. Specific embodiments

[0017] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without making creative efforts shall fall within the protection scope of the present utility model.

[0018] Please refer to Figures 1-5 , an embodiment provided by the present utility model: a positioning device for laser - cutting special - shaped holes in square tubes, including an I - shaped frame 1 and a support platform plate 2 fixed on one side inside the I - shaped frame 1. The I - shaped frame 1 includes a top plate, a bottom plate, and four rectangular square columns for connecting the top plate and the bottom plate;

[0019] Both end faces at the top of the support platform plate 2 are fixed with front stop seats 7. On the top of the support platform plate 2 on one side of the front stop seat 7, two symmetric U - shaped frames 201 are fixed. At the central position of the top of the support platform plate 2, a link double - way swing - push structure 5 is arranged. The moving ends of the link double - way swing - push structure 5 are respectively installed with a rear sliding plate 3 and a front sliding plate 4 which are slidably matched with the top of the U - shaped frame 201. Right - angle seats 6 are fixed on the outer walls of the rear sliding plate 3 and the front sliding plate 4 away from each other. A rotary self - locking unit 8 for driving the link double - way swing - push structure 5 to work is installed at the bottom of the I - shaped frame 1;

[0020] A sliding guide structure is provided between the bottom ends of the rear slide plate 3 and the front slide plate 4 and the top end of the support plate 2. The sliding guide structure is a rectangular cutting groove 202 provided at the top end of the support plate 2, and a sliding seat slidably installed inside the rectangular cutting groove 202. The top end of the sliding seat penetrates to the outside of the rectangular cutting groove 202. During the process of the rear slide plate 3 and the front slide plate 4 being pushed and displaced by the connecting rod bi-directional swing-push structure 5, the sliding seats at the bottom ends of the front slide plate 4 and the rear slide plate 3 will slide inside the rectangular cutting groove 202, so that the rear slide plate 3 and the front slide plate 4 slide stably;

[0021] The connecting rod bi-directional swing-push structure 5 includes a main shaft 501 rotatably installed at the central position inside the I-shaped frame 1, and a middle arm 502 fixed to one end of the surface of the main shaft 501. Connecting rod monomers 503 are hinged to both ends of the middle arm 502. The end of the connecting rod monomer 503 away from the middle arm 502 is hinged to the back surface of the rear slide plate 3 or the back surface of the front slide plate 4. The main shaft 501 in the connecting rod bi-directional swing-push structure 5 is driven to rotate by the rotation self-locking unit 8. Then the main shaft 501 drives the middle arm 502 to swing. Since the rear slide plate 3, the front slide plate 4 and the ends of the middle arm 502 are connected, the rotational movement of the middle arm 502 is changed into the forward and backward sliding movements of the rear slide plate 3 and the front slide plate 4 under the change of the connecting rod monomer 503. Then the right-angle seat 6 and the front stop seat 7 approach each other to clamp the square tube workpiece in this way. The use of the connecting rod bi-directional swing-push structure 5 can make the rear slide plate 3 and the front slide plate 4 move synchronously, realizing the clamping function of double workpieces, so that the processing equipment can process more workpieces in the same period of time;

[0022] Both the right-angle seat 6 and the front stop seat 7 are made of components of aluminum alloy material. The aluminum alloy material reduces the load and inertia of the overall equipment while ensuring the structural strength and stability of the right-angle seat 6 and the front stop seat 7;

[0023] The rotation self-locking unit 8 includes a stepping motor installed at the bottom of the I-shaped frame 1, and a worm and worm gear transmission structure installed at the output end of the stepping motor for driving the main shaft 501 to rotate. The rotation self-locking unit 8 adopts the cooperation form of a stepping motor and a worm and worm gear transmission structure to ensure that in the set position and state, the connecting rod bi-directional swing-push structure 5 will not loosen or move by itself, and can prevent accidental movement or vibration caused by vibration or external disturbance.

[0024] When the embodiment of the present application is in use, first, the staff passes the square tube workpiece to be positioned through the loop-shaped frame 201. Subsequently, the staff activates the rotary self-locking unit 8 to work. Then, the rotary power of the rotary self-locking unit 8 is transmitted to the link double-sided swing-push structure 5. Driven by the link double-sided swing-push structure 5, the rear slide plate 3 and the front slide plate 4 move away from each other. Then, both the rear slide plate 3 and the front slide plate 4 drive the right-angle seat 6 to move towards the front stop seat 7. During this process, the sliding guide structure at the top of the loop-shaped frame 201 serves to assist the rear slide plate 3 and the front slide plate 4 in sliding. When the right-angle seat 6 moves towards the front stop seat 7, the slope outer wall of the right-angle seat 6 simultaneously applies force to one side of the top of the square tube workpiece until the right-angle seat 6 and the front stop seat 7 stably clamp the square tube workpiece. This device realizes an automated workpiece clamping process. Compared with traditional manual operations, this automated clamping structure can significantly reduce the manual intervention of operators, enabling operators to no longer need to manually screw and press the workpiece up and down, thereby reducing the operation cycle and time cost of workpiece clamping. Moreover, the coordinated work of the rotary self-locking unit 8 and the right-angle seat 6 can also precisely control the clamping force and the position of the workpiece, thereby improving the positioning accuracy of the square tube workpiece and ensuring that each workpiece always maintains a stable position and posture during the cutting process.

[0025] For those skilled in the art, it is obvious that the present utility model is not limited to the details of the above exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or basic characteristics of the present utility model. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the present utility model is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present utility model. Any reference signs in the claims should not be regarded as limiting the claims involved.

Claims

1. A square tube laser cutting special-shaped hole positioning device, characterized in that: The invention comprises an I-shaped frame (1) and a support plate (2) fixed on one side of the I-shaped frame (1), both end surfaces of the top of the support plate (2) are fixed with front stoppers (7), two symmetrical return frames (201) are fixed on the top of the support plate (2) on one side of the front stoppers (7), a connecting rod bidirectional swinging structure (5) is arranged at the center position of the top of the support plate (2), the movable ends of the connecting rod bidirectional swinging structure (5) are respectively installed with a rear slide plate (3) and a front slide plate (4) for sliding cooperation with the top of the return frame (201), the outer walls of the rear slide plate (3) and the front slide plate (4) on the side away from each other are fixed with a right angle seat (6), and the bottom of the I-shaped frame (1) is installed with a rotating self-locking unit (8) for driving the connecting rod bidirectional swinging structure (5) to work.

2. The square tube laser cutting special-shaped hole positioning device according to claim 1, characterized in that: The I-shaped frame (1) comprises a top plate, a bottom plate and four rectangular square columns used to connect the top plate and the bottom plate.

3. The square tube laser cutting special-shaped hole positioning device according to claim 1, characterized in that: A sliding guide structure is provided between the bottom ends of the rear slide plate (3) and the front slide plate (4) and the top end of the support plate (2), wherein the sliding guide structure is a rectangular cut-out groove (202) provided at the top end of the support plate (2), and a slide seat slidably installed inside the rectangular cut-out groove (202), wherein the top end of the slide seat extends to the outside of the rectangular cut-out groove (202).

4. The square tube laser cutting special-shaped hole positioning device according to claim 1, characterized in that: The connecting rod bidirectional swing-pushing structure (5) comprises a main shaft (501) rotatably mounted at the center position inside the I-shaped frame (1), and a center arm (502) with one end fixed on the surface of the main shaft (501), both ends of the center arm (502) are hinged with a connecting rod monomer (503), and one end of the connecting rod monomer (503) away from the center arm (502) is hinged to the back side of the rear slide plate (3) or the back side of the front slide plate (4).

5. The square tube laser cutting special-shaped hole positioning device according to claim 1, characterized in that: The right-angle seat (6) and the front stop seat (7) are both made of aluminum alloy components.

6. The square tube laser cutting special-shaped hole positioning device according to claim 4, characterized in that: The rotation self-locking unit (8) comprises a stepping motor installed at the bottom of the I-shaped frame (1), and A worm gear transmission structure for driving the main shaft (501) to rotate is installed at the output end of the stepping motor.

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