Auxiliary positioning structure for metal punching machine tool with downward pressing fixing function

Abstract

The utility model discloses an auxiliary positioning structure for a metal punching machine tool with a pressing fixing function, which comprises an objective table, the objective table is fixed on the metal punching machine tool, a support frame is fixed on the upper end face of the objective table, and a first limiting mechanism is arranged on the inner side of the support frame; the pressing block is fixed to one end of the movable plate, the other end of the movable plate is fixedly connected with one end of the traction rope, and the connecting shaft is arranged on an output shaft of the motor; and the second limiting mechanism is arranged in the objective table, and the first limiting mechanism and the second limiting mechanism are matched with each other to stably limit the metal workpiece. The auxiliary positioning structure for the metal punching machine tool with the downward-pressing fixing function can be suitable for workpieces of different sizes and different thicknesses, efficient positioning of the workpieces is achieved, the mode that downward-pressing fixing and negative-pressure adsorption fixing are combined is adopted, the stability of the positioned workpieces can be guaranteed, and the phenomenon that the workpieces are prone to deviation is prevented.

Description

Technical Field

[0001] The utility model relates to the technical field related to metal stamping machines, in particular to an auxiliary positioning structure for metal stamping machines with downward pressing and fixing. Background Art

[0002] A metal stamping machine is a mechanical device used for metal processing, mainly used to form metal plates or punch holes in metal plates. Its main function is to deform or separate metal or other materials by applying high pressure, thereby producing parts or products of various shapes and sizes. Therefore, during the processing of the metal stamping machine, an auxiliary positioning structure is required to limit the workpiece. For example, a punch workpiece positioning structure with publication number CN216420873U includes a base plate, a mounting seat is installed on the upper side of the base plate, the mounting seat is provided with two avoidance grooves, the mounting seat is connected to a double-headed threaded rod, a rotating handle is installed at one end of the double-headed threaded rod, and multiple bearings are installed between the double-headed threaded rod and the mounting seat, the double-headed threaded rod is installed with a nut sleeve at the avoidance groove, the nut sleeve is connected to a slotted mounting seat, and the slotted mounting seat is slidably connected to two first guide columns, which can adjust the height and width according to workpieces of different sizes, ensure product processing quality, and improve work efficiency. However, the punch workpiece positioning structure still has the following shortcomings during actual use:

[0003] The traditional auxiliary positioning structure has certain requirements on the specifications of the workpiece when positioning the workpiece, so it has limitations in use, and the way of positioning the workpiece is relatively single. During stamping processing, it is easy to cause the position of the workpiece to shift, affecting the accuracy of the processing. In response to the above problems, it is urgently necessary to carry out innovative design based on the original auxiliary positioning structure. Utility Model Content

[0004] The purpose of the present utility model is to provide an auxiliary positioning structure for a metal stamping machine with a downward pressing fixation, so as to solve the problem proposed in the above background technology that the traditional auxiliary positioning structure has certain requirements on the specifications of the workpiece when positioning the workpiece, so it has limitations when used, and the method of positioning the workpiece is relatively single, which easily causes the position of the workpiece to be offset during stamping processing, affecting the accuracy of processing.

[0005] To achieve the above-mentioned object, the present invention provides the following technical solution: an auxiliary positioning structure for a metal stamping machine with downward pressing and fixing, comprising a loading platform, the loading platform being fixed on the metal stamping machine, and the upper end surface of the loading platform being used to place a metal workpiece, the upper end surface of the loading platform being fixed with a support frame, and a first limiting mechanism being provided on the inner side of the support frame, and the first limiting mechanism comprising a movable plate and a pressing block;

[0006] It also includes: a pressure block fixed to one end of the movable plate, the other end of the movable plate is fixedly connected to one end of the traction rope, and the other end of the traction rope is wound around the outside of the connecting shaft, the connecting shaft is provided on the output shaft of the motor, and the motor is installed on the side of the fixed plate, and the fixed plate is fixed to the top of the support frame;

[0007] The second limiting mechanism is arranged inside the loading platform, and the first limiting mechanism and the second limiting mechanism cooperate with each other to achieve stable limiting of the metal workpiece.

[0008] Preferably, the movable plate and the support frame form a rotating structure, and a spiral spring is provided at the rotating shaft of the movable plate and the support frame, and the movable plate and the support frame are symmetrically distributed about the vertical axis of the loading platform, and the movable plate can rotate inside the support frame when pulled.

[0009] Preferably, the lower end surface of the pressing block is an arc structure, and the pressing block is made of rubber. After the movable plate rotates, the pressing block can press the workpiece downward to ensure its stability after placement.

[0010] Preferably, the traction ropes are symmetrically arranged at both ends of the connecting shaft, and the winding directions of the two groups of traction ropes are the same. When the motor drives the connecting shaft to rotate, the two groups of traction ropes can be synchronously wound.

[0011] Preferably, the second limiting mechanism includes a connecting rope fixed to the lower end surface of the movable plate, and a piston plate is provided at the end of the connecting rope away from the movable plate, and the connecting rope slides through the end of the loading platform. After the movable plate rotates, the piston plate can be pulled to move in the fixed cavity by the connecting rope.

[0012] Preferably, the piston plate is slidably arranged inside the fixed cavity, and the fixed cavity is opened in the worktable. After the piston plate moves, the gas between the workpiece and the worktable can be sucked into the fixed cavity.

[0013] Preferably, the side of the piston plate is elastically connected to the inner wall of the fixed cavity through a spring, and fixing holes are evenly reserved on the loading platform above the spring, and the fixing holes are connected to the interior of the fixed cavity, so that the workpiece can be stably adsorbed on the loading platform through the fixing holes.

[0014] Compared with the prior art, the beneficial effects of the present invention are as follows: the auxiliary positioning structure for metal stamping machines with downward pressure fixation can be applied to workpieces of different sizes and thicknesses, achieving efficient positioning of the workpieces, and adopting a combination of downward pressure fixation and negative pressure adsorption fixation to ensure the stability of the workpiece after positioning and prevent easy deviation. The specific contents are as follows:

[0015] 1. The motor drives the connecting shaft to rotate, which can synchronously reel in the two traction ropes, thereby pulling the movable plate to rotate on the support frame. The ends of the movable plates that are close to each other continue to approach the workpiece and tightly contact the workpiece against the stage, thus achieving the initial position limit of the workpiece;

[0016] Furthermore, since the pressing block is made of rubber, it will not damage the workpiece when pressing down and fixing it, while ensuring stability after limiting, and can also be applied to workpieces of different specifications;

[0017] 2. When the movable plate rotates, the end away from each other can pull the connecting rope, thereby driving the piston plate to move in the fixed cavity, and the air between the workpiece and the loading platform can be drawn into the fixed cavity through the fixed hole, so that the workpiece can be stably adsorbed on the loading platform, thereby further limiting the position of the workpiece. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0019] Figure 2 This is a schematic diagram of the cross-sectional structure of the utility model;

[0020] Figure 3 This is a schematic diagram of the distribution structure of the connecting rope of the utility model;

[0021] Figure 4 For this utility model Figure 3 A in the middle is an enlarged structural diagram;

[0022] Figure 5 This is a schematic diagram of the movable plate structure when viewed from above.

[0023] In the figure: 1. Loading platform; 2. Support frame; 3. Movable plate; 4. Pressure block; 5. Fixed plate; 6. Motor; 7. Connecting shaft; 8. Traction rope; 9. Connecting rope; 10. Piston plate; 11. Fixed chamber; 12. Fixed hole. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0025] See also Figure 1-Figure 5 , the utility model provides the following technical solutions:

[0026] Example 1: In order to solve the problems existing in the prior art, this embodiment adopts the following technical scheme: an auxiliary positioning structure for a metal stamping machine with downward pressure and fixation, including a loading platform 1, the loading platform 1 is fixed on the metal stamping machine, and the upper end surface of the loading platform 1 is used to place the metal workpiece, the upper end surface of the loading platform 1 is fixed with a support frame 2, and the inner side of the support frame 2 is provided with a first limiting mechanism, and the first limiting mechanism includes a movable plate 3 and a pressure block 4; it also includes: a pressure block 4, fixed to one end of the movable plate 3, the other end of the movable plate 3 is fixedly connected to one end of the traction rope 8, and the other end of the traction rope 8 is wound around the outside of the connecting shaft 7, the connecting shaft 7 is provided on the output shaft of the motor 6, and the motor 6 is installed on the side of the fixed plate 5, and the fixed plate 5 is fixed to the top of the support frame 2; a second limiting mechanism, provided inside the loading platform 1, the first limiting mechanism and the second limiting mechanism cooperate with each other to achieve stable limiting of the metal workpiece.

[0027] The existing auxiliary positioning structure has certain requirements on the specifications of the workpiece when positioning the workpiece, so it has limitations when used, such as Figure 1-Figure 2 and Figure 5 As shown, the movable plate 3 and the support frame 2 form a rotating structure, and a spiral spring is provided at the rotating shaft of the movable plate 3 and the support frame 2, and the movable plate 3 and the support frame 2 are symmetrically distributed about the vertical axis of the loading platform 1; the lower end surface of the pressure block 4 is an arc structure, and the pressure block 4 is made of rubber; the traction ropes 8 are symmetrically arranged at both ends of the connecting shaft 7, and the winding directions of the two sets of traction ropes 8 are the same; first, the workpiece to be positioned is placed on the loading platform 1, and the edge of the workpiece is placed on the end where the two movable plates 3 are close to each other, and then the motor 6 is driven to drive the connecting shaft 7 to rotate, which can synchronously retract the two traction ropes 8 When the workpiece is moved to the workpiece support, the motor 6 drives the traction rope 8 to be retracted, so that the movable plate 3 is not pulled and can automatically return to the horizontal state through the resilience of the spiral spring so that it can be used next time.

[0028] Example 2: The existing auxiliary positioning structure has a relatively simple way to position the workpiece. During the stamping process, it is easy to cause the workpiece position to shift, affecting the accuracy of the processing. Therefore, this embodiment adopts the following technical solutions, such as Figure 2-Figure 4As shown, the second limiting mechanism includes a connecting rope 9 fixed to the lower end surface of the movable plate 3, and a piston plate 10 is provided at the end of the connecting rope 9 away from the movable plate 3, and the connecting rope 9 slides through the end of the loading platform 1; the piston plate 10 is slidably arranged inside the fixed cavity 11, and the fixed cavity 11 is opened in the loading platform 1; the side of the piston plate 10 is elastically connected to the inner wall of the fixed cavity 11 through a spring, and fixing holes 12 are evenly reserved on the loading platform 1 above the spring, and the fixing holes 12 are connected to the inside of the fixed cavity 11; the movable plate When the movable plate 3 rotates, the ends thereof which are away from each other can pull the connecting rope 9, thereby driving the piston plate 10 to move in the fixed cavity 11. In this way, the air between the workpiece and the loading platform 1 can be drawn into the fixed cavity 11 through the fixing hole 12, so that the workpiece can be stably adsorbed on the loading platform 1, thereby further limiting the position of the workpiece and ensuring the stability of the position of the workpiece during subsequent processing. At the same time, when the movable plate 3 rotates in the opposite direction, the resilience of the spring drives the piston plate 10 and the connecting rope 9 to return to their original positions, thereby releasing the limit on the workpiece and facilitating the removal of the workpiece.

[0029] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. An auxiliary positioning structure for a metal stamping machine with downward pressing and fixing, comprising a loading platform (1), wherein the loading platform (1) is fixed on the metal stamping machine, and the upper end surface of the loading platform (1) is used to place a metal workpiece, a support frame (2) is fixed to the upper end surface of the loading platform (1), and a first limiting mechanism is provided on the inner side of the support frame (2), and the first limiting mechanism includes a movable plate (3) and a pressing block (4); It is characterized in that Also includes: A pressing block (4) is fixed to one end of the movable plate (3), the other end of the movable plate (3) is fixedly connected to one end of a traction rope (8), and the other end of the traction rope (8) is wound around the outside of a connecting shaft (7), the connecting shaft (7) is arranged on the output shaft of the motor (6), and the motor (6) is installed on the side of the fixed plate (5), and the fixed plate (5) is fixed to the top of the support frame (2); The second limiting mechanism is arranged inside the loading platform (1), and the first limiting mechanism and the second limiting mechanism cooperate with each other to achieve stable limiting of the metal workpiece.

2. The auxiliary positioning structure for a metal stamping machine tool with downward pressing and fixing according to claim 1, characterized in that: The movable plate (3) and the support frame (2) form a rotating structure, and spiral springs are provided at the rotating shafts of the movable plate (3) and the support frame (2), and the movable plate (3) and the support frame (2) are symmetrically distributed about the vertical axis of the loading platform (1).

3. The auxiliary positioning structure for a metal stamping machine with downward pressing and fixing according to claim 1, characterized in that: The lower end surface of the pressing block (4) is a curved surface structure, and the pressing block (4) is made of rubber.

4. The auxiliary positioning structure for a metal stamping machine with downward pressing and fixing according to claim 1, characterized in that: The traction ropes (8) are symmetrically arranged at both ends of the connecting shaft (7), and the winding directions of the two groups of traction ropes (8) are the same.

5. The auxiliary positioning structure for a metal stamping machine with downward pressing and fixing according to claim 1, characterized in that: The second limiting mechanism includes a connecting rope (9) fixed to the lower end surface of the movable plate (3), and a piston plate (10) is provided at one end of the connecting rope (9) away from the movable plate (3), and the connecting rope (9) slides through the end of the loading platform (1).

6. The auxiliary positioning structure for a metal stamping machine with downward pressing and fixing according to claim 5, characterized in that: The piston plate (10) is slidably arranged inside the fixed cavity (11), and the fixed cavity (11) is opened in the loading platform (1).

7. The auxiliary positioning structure for a metal stamping machine with downward pressing and fixing according to claim 6, characterized in that: The side of the piston plate (10) is elastically connected to the inner wall of the fixing cavity (11) via a spring, and fixing holes (12) are evenly reserved on the loading platform (1) above the spring, and the fixing holes (12) are connected to the interior of the fixing cavity (11).

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