阅读说明：本技术 一种汽车零部件冲孔钣金模具冲压结构及使用方法 (Stamping structure of punching sheet metal die for automobile parts and use method ) 是由 刘树春 刘凤彩 唐威 于 2021-08-31 设计创作，主要内容包括：本发明属于汽车零件加工技术领域,尤其为一种汽车零部件冲孔钣金模具冲压结构,包括工作台,所述工作台的底部中心开设有方形状的安装槽,所述安装槽的内顶壁设有与工作台顶部连通的第一圆形孔,所述安装槽与第一圆形孔均位于工作台的中心处,所述安装槽的内顶壁安装有伺服电机。本发明通过控制器对伺服电机每一次转动的角度设为180度,当伺服电机带动转杆顶端连接的转盘转动时,可保证转盘表面连接的定模组件能够沿工作台的上方做圆周直线运动,并且定模组件中的两个凹型固定模具分别位于转盘的左右方位前,可分别与冲压组件和收集组件相互对应,其目的是为了保证零件在高效冲孔加工的同时,还可对冲孔后的零件进行自动收集。(The invention belongs to the technical field of automobile part machining, and particularly relates to a punching structure of a punching sheet metal die for automobile parts. The controller is used for setting the angle of each rotation of the servo motor to be 180 degrees, when the servo motor drives the rotary disc connected with the top end of the rotary rod to rotate, the fixed die assembly connected with the surface of the rotary disc can be ensured to do circular linear motion along the upper part of the workbench, and the two concave fixed dies in the fixed die assembly are respectively positioned in front of the left position and the right position of the rotary disc and can respectively correspond to the punching assembly and the collecting assembly.)

1. The utility model provides an automobile parts sheet metal mould stamping structure that punches a hole, includes workstation (1), its characterized in that: the bottom center of workstation (1) is seted up square shape mounting groove (2), the interior roof of mounting groove (2) is equipped with first circular port (3) that communicate with workstation (1) top, mounting groove (2) all are located the center department of workstation (1) with first circular port (3), servo motor (4) are installed to the interior roof of mounting groove (2), the output of servo motor (4) is connected with bull stick (5) with first circular port (3) looks adaptation, bull stick (5) extend to the top of workstation (1) along the inside of first circular port (3), the top of bull stick (5) is connected with carousel (6) with workstation (1) top contact, the top center of carousel (6) is connected with cover half subassembly (7), circumference linear motion is along the top of workstation (1) in the rotation of cover half subassembly (7) accessible carousel (6), one side of workstation (1) is equipped with and is used for punching press subassembly (8) to the part, the opposite side of workstation (1) is equipped with and is used for carrying out collection subassembly (9) placed to the part after punching a hole, the inclined surface of workstation (1) inlays and is equipped with controller (10).

2. The automobile part punching sheet metal die stamping structure according to claim 1, characterized in that: the fixed die assembly (7) comprises a connecting plate (701), the connecting plate (701) is connected to the center of the top of the turntable (6), two symmetrical concave die fixing bodies (702) are connected to two sides of the connecting plate (701), a sliding groove (703) is formed in the lower surface of each concave die fixing body (702), a positioning plate (704) is arranged inside the sliding groove (703), an electric push rod (705) is connected to the side surface of each concave die fixing body (702), the output end of the electric push rod (705) extends to the inside of the sliding groove (703) and is connected with one side of the positioning plate (704), a fixing groove (706) is formed in the top of the positioning plate (704), and an electromagnet (707) is installed on the inner bottom wall of the fixing groove (706).

3. The automobile part punching sheet metal die stamping structure according to claim 2, characterized in that: the inner wall of the sliding groove (703) is provided with two symmetrical sliding rails (708), the surface of the positioning plate (704) is provided with a sliding plate (709) matched with the sliding rails (708), the sliding plate (709) can move back and forth along the inner wall of the sliding rails (708), the upper surface and the lower surface of the connecting plate (701) are provided with second circular holes (710) which are communicated with each other, the top of the turntable (6) is provided with a positioning screw rod (11) matched with the second circular holes (710), the positioning screw rod (11) extends to the top of the connecting plate (701) through the second circular holes (710), and the surface of the positioning screw rod (11) is in threaded connection with a circular fixing nut (12).

4. The automobile part punching sheet metal die stamping structure according to claim 1, characterized in that: first concave groove (13) have been seted up to one side of workstation (1), punching press subassembly (8) include pneumatic cylinder (801), install on the interior diapire of first concave groove (13) pneumatic cylinder (801), the output of pneumatic cylinder (801) is connected with L type fixed plate (802), the side-mounting of L type fixed plate (802) has L type connecting rod (803) of two symmetries, the bottom of L type connecting rod (803) is connected with telescopic link (804), the surperficial cover face of telescopic link (804) has buffer spring (805), the other end of telescopic link (804) is connected with stamping die (806).

5. The automobile part punching sheet metal die stamping structure according to claim 1, characterized in that: the other side of the workbench (1) is provided with a second concave groove (14), the collecting assembly (9) comprises a collecting box (901), the diameter of the surface of the collecting box (901) is matched with the diameter of the inner wall of the second concave groove (14), the opening of the collecting box (901) and the top of the workbench (1) keep the same horizontal line, the inner wall of the second concave groove (14) is provided with two symmetrical moving grooves (15), the surface of the collecting box (901) is provided with a moving plate (902) matched with the moving grooves (15), and the moving plate (902) can do reciprocating horizontal linear motion on the inner wall of the moving grooves (15).

6. The automobile part punching sheet metal die stamping structure according to claim 1, characterized in that: the bottom side of the workbench (1) is connected with a limiting plate (16) through a rotating shaft, the limiting plate (16) makes circular linear motion along the side face of the workbench (1) through the rotating shaft, and the limiting plate (16) is in contact with one face, corresponding to the workbench (1), of the workbench.

7. The use method of the punching structure of the punching sheet metal die for the automobile parts according to any one of claims 1 to 6, characterized by comprising the following steps: the method comprises the following steps:

step A, when an electric push rod (705) pushes a positioning plate (704) to move, a sliding plate (709) connected with the surface of the positioning plate (704) moves horizontally and linearly along the inner wall of a sliding track (708) in the forward direction, when the output stroke of the electric push rod (705) reaches the maximum value, the positioning plate (704) in a fixed die assembly (7) corresponds to the convex part of a concave fixing die (702), then a part needing punching can be placed between the positioning plate (704) and the convex part of the concave fixing die (702), and because an electromagnet (707) is installed in a fixing groove (706) formed in the top of the positioning plate (704), when the electromagnet (707) is opened, the part can be electromagnetically adsorbed, and the fixing performance of the part during punching operation can be guaranteed;

step B, the servo motor (4) drives the rotary disc (6) at the top of the rotary rod (5) to do circular linear motion along the top of the workbench (1) through the driving of the servo motor (4), the angle of each rotation of the servo motor (4) is 180 degrees, and the connecting plate (701) is connected to the top of the rotary disc (6), so that two concave fixing dies (702) symmetrically connected to two sides of the connecting plate (701) can be ensured to respectively correspond to the stamping assembly (8) and the collecting assembly (9) when doing circular linear motion, the design can ensure that parts in the concave fixing die (702) at one side can be positioned at the collecting assembly (9) to collect the parts when punching is completed, parts which are not punched in the concave fixing die (702) at the other side can be positioned at the stamping assembly (8) to continuously punch, when the parts which are punched in the concave fixing die (702) are positioned at the collecting assembly (9) to collect, only the electromagnet (707) needs to be disconnected, the part loses the electromagnetic property and is not adsorbed and fixed with the electromagnet (707), then under the use of the electric push rod (705), the positioning plate (704) makes horizontal linear motion along the reverse direction of the inner wall of the sliding track (708) through the sliding plate (709), when the positioning plate (704) moves to the inside of the sliding groove (703), the punched part can fall into the collecting box (901) in the collecting assembly (9), and the processed part can be collected.

Technical Field

The invention relates to the technical field of automobile part processing, in particular to a punching structure of a punching sheet metal die for automobile parts and a using method thereof.

Background

In the production and processing process of automobile parts, the iron part plate generally needs to be punched, at present, for the punching of the automobile parts, a lower punching mode is generally adopted, namely, punches are arranged on the upper surface, and the automobile part processing punches are punched from top to bottom, so that the automobile parts are processed.

At present, the top at the workstation is installed to last mould majority among the traditional mould stamping structure, and occupation space at workstation top is excessively wasted to this kind of design to the part after punching a hole needs the manual work to take out the part from the fixed department in the bed die, hardly carries out automatic collection to the part after punching a hole when collecting, leads to the mould practicality of traditional stamping structure class lower. Therefore, the invention provides a stamping structure of a punching sheet metal die for automobile parts and a using method thereof.

Disclosure of Invention

Technical problem to be solved

Aiming at the defects of the prior art, the invention provides a punching structure of a punching sheet metal die for automobile parts and a using method thereof, and solves the problems that the structural design of the traditional punching die occupies too much space and the punched parts are difficult to automatically collect.

The second technical proposal.

The invention specifically adopts the following technical scheme for realizing the purpose:

a punching structure of a punching sheet metal die for automobile parts comprises a workbench, wherein a square mounting groove is formed in the center of the bottom of the workbench, a first circular hole communicated with the top of the workbench is formed in the inner top wall of the mounting groove, the mounting groove and the first circular hole are located in the center of the workbench, a servo motor is installed on the inner top wall of the mounting groove, the output end of the servo motor is connected with a rotating rod matched with the first circular hole, the rotating rod extends to the top of the workbench along the inside of the first circular hole, the top end of the rotating rod is connected with a rotary table in contact with the top of the workbench, a fixed die assembly is connected to the center of the top of the rotary table, the fixed die assembly can do circular linear motion along the upper side of the workbench through rotation of the rotary table, a punching assembly for punching parts is arranged on one side of the workbench, and a collecting assembly for placing the punched parts is arranged on the other side of the workbench, the controller is embedded in the inclined surface of the workbench.

Further, the cover half subassembly includes the connecting plate, the top center at the carousel is connected to the connecting plate, the both sides of connecting plate are connected with the fixed mould of the concave type of two symmetries, the fixed mould lower surface of concave type is equipped with the groove of sliding, the inside in groove of sliding is equipped with the locating plate, the side of the fixed mould of concave type is connected with electric putter, electric putter's output extends to the inside in groove of sliding and links to each other with one side of locating plate, the top of locating plate is equipped with the fixed slot, the electro-magnet is installed to the inner diapire of fixed slot.

Furthermore, the inner wall of the sliding groove is provided with two symmetrical sliding rails, the surface of the positioning plate is provided with a sliding plate matched with the sliding rails, the sliding plate can make linear motion back and forth along the inner wall of the sliding rails, the upper surface and the lower surface of the connecting plate are provided with second circular holes which are communicated, the top of the turntable is provided with a positioning screw rod matched with the second circular holes, the positioning screw rod extends to the top of the connecting plate through the second circular holes, and the surface of the positioning screw rod is in threaded connection with a circular fixing nut.

Further, first concave groove has been seted up to one side of workstation, the punching press subassembly includes the pneumatic cylinder, the pneumatic cylinder is installed on the interior diapire of first concave groove, the output of pneumatic cylinder is connected with L type fixed plate, the side-mounting of L type fixed plate has the L type connecting rod of two symmetries, the bottom of L type connecting rod is connected with the telescopic link, there is buffer spring the surperficial cover face of telescopic link, the other end of telescopic link is connected with stamping die.

Furthermore, a second concave groove is formed in the other side of the workbench, the collecting assembly comprises a collecting box, the diameter of the surface of the collecting box is matched with the diameter of the inner wall of the second concave groove, the opening of the collecting box and the top of the workbench are kept on the same horizontal line, two symmetrical moving grooves are formed in the inner wall of the second concave groove, a moving plate matched with the moving grooves is arranged on the surface of the collecting box, and the moving plate can move back and forth on the inner wall of the moving grooves in a horizontal linear mode.

Furthermore, the bottom side of workstation is connected with the limiting plate through the pivot, the limiting plate is circular linear motion along the side of workstation through the pivot, the limiting plate contacts with the one side that the workstation corresponds each other.

The invention also provides a use method of the punching structure of the punching sheet metal die for the automobile parts, which comprises the following steps:

step A, when an electric push rod pushes a positioning plate to move, a sliding plate connected to the surface of the positioning plate makes horizontal linear motion along the inner wall of a sliding track in the forward direction, when the output stroke of the electric push rod reaches the maximum value, the positioning plate in a fixed die assembly corresponds to the convex part of a concave fixed die, then a part to be punched can be placed between the positioning plate and the convex part of the concave fixed die, and due to the fact that an electromagnet is installed in a fixed groove formed in the top of the positioning plate, when the electromagnet is turned on, electromagnetic adsorption can be carried out on the part, and the fixing performance of the part during punching operation can be guaranteed;

step B, the servo motor drives the rotary disc at the top of the rotary rod to do circular linear motion along the top of the workbench, the rotating angle of the servo motor is 180 degrees each time, and the connecting plate is connected to the top of the rotary disc, so that two concave fixing dies symmetrically connected with two sides of the connecting plate can be ensured to respectively correspond to the punching assembly and the collecting assembly when doing circular linear motion, the design can ensure that parts in the concave fixing die at one side can be positioned at the collecting assembly to collect the parts when punching is completed, parts which are not punched in the concave fixing die at the other side can be positioned at the punching assembly to continue punching, when the punched parts in the concave fixing dies are positioned at the collecting assembly to collect, only the electromagnet needs to be disconnected, the parts lose the electromagnetic property and are not adsorbed and fixed with the electromagnet, and then under the use of the electric push rod, the locating plate is horizontally and linearly moved along the reverse direction of the inner wall of the sliding rail through the sliding plate, when the locating plate moves to the inside of the sliding groove, punched parts can fall into a collecting box in the collecting assembly, and the machined parts can be collected.

(III) advantageous effects

Compared with the prior art, the invention provides a punching structure of a punching sheet metal die for automobile parts and a use method thereof, and the punching structure has the following beneficial effects:

1. according to the invention, the angle of each rotation of the servo motor is set to 180 degrees through the controller, when the servo motor drives the rotary table connected with the top end of the rotary rod to rotate, the fixed mold assembly connected with the surface of the rotary table can be ensured to do circular linear motion along the upper part of the workbench, and two concave fixing molds in the fixed mold assembly are respectively positioned in front of the left and right positions of the rotary table and can respectively correspond to the punching assembly and the collecting assembly.

2. According to the invention, the fixed die assembly and the turntable are detachably arranged, so that the turntable and the fixed die assembly can be conveniently assembled, the stamping assembly and the collecting assembly designed in the invention are respectively arranged in the inner walls of the first concave groove and the second concave groove, and the stamping assembly and the collecting assembly can reduce the space respectively occupying the top of the workbench due to the design.

Drawings

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a schematic view of the present invention showing the connection of the rotating bar to the table;

FIG. 3 is a bottom cross-sectional view of the table of the present invention;

FIG. 4 is a schematic view of a connection structure of a turntable and a fixed mold assembly according to the present invention;

FIG. 5 is a schematic view of the back side structure of the stationary mold assembly of the present invention;

FIG. 6 is a schematic front view of a stationary mold assembly according to the present invention;

FIG. 7 is a schematic view of the structure of the telescopic rod and the L-shaped connecting rod of the present invention.

In the figure: 1. a work table; 2. mounting grooves; 3. a first circular hole; 4. a servo motor; 5. a rotating rod; 6. a turntable; 7. a stationary die assembly; 701. a connecting plate; 702. a concave fixed mould; 703. a sliding groove; 704. positioning a plate; 705. an electric push rod; 706. fixing grooves; 707. an electromagnet; 708. a sliding track; 709. a slide plate; 710. a second circular hole; 8. a stamping assembly; 801. a hydraulic cylinder; 802. an L-shaped fixing plate; 803. an L-shaped connecting rod; 804. a telescopic rod; 805. a buffer spring; 806. a stamping die; 9. a collection assembly; 901. a collection box; 902. moving the plate; 10. a controller; 11. positioning a screw rod; 12. fixing a nut; 13. a first concave groove; 14. a second concave groove; 15. a moving groove; 16. and a limiting plate.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Examples

As shown in fig. 1-3, an automobile part punching sheet metal die punching structure according to an embodiment of the present invention includes a workbench 1, a square mounting groove 2 is formed in a bottom center of the workbench 1, a first circular hole 3 communicated with a top of the workbench 1 is formed in an inner top wall of the mounting groove 2, the mounting groove 2 and the first circular hole 3 are both located at a center of the workbench 1, a servo motor 4 is installed on the inner top wall of the mounting groove 2, an output end of the servo motor 4 is connected with a rotating rod 5 adapted to the first circular hole 3, the rotating rod 5 extends to the top of the workbench 1 along an inside of the first circular hole 3, a turntable 6 in contact with the top of the workbench 1 is connected to a top end of the rotating rod 5, a fixed mold assembly 7 is connected to a top center of the turntable 6, the fixed mold assembly 7 can make a circular linear motion along an upper side of the workbench 1 by rotation of the turntable 6, a punching assembly 8 for punching a part is disposed on one side of the workbench 1, the other side of the workbench 1 is provided with a collecting assembly 9 for placing punched parts, a controller 10 is embedded in the inclined surface of the workbench 1, wherein the servo motor 4 is electrically connected with the controller 10, the controller 10 sets the angle of the servo motor 4 for rotating for each time to be 180 degrees, when the turntable 6 rotates at the top of the workbench 1, two concave fixed dies 702 in the fixed die assembly 7 can do circular linear motion along the upper part of the workbench 1 and respectively correspond to the punching assembly 8 and the collecting assembly 9, the punching assembly 8 and the collecting assembly 9 designed in the invention are designed according to corresponding positions in the fixed die assembly 7, under the rotation of the turntable 6, the punched parts on one side in the fixed die assembly 7 can rotate to the corresponding positions in the collecting assembly 9, and the unpunched parts on the other side can rotate to the position right below the punching assembly 8 to continuously punch holes, this kind of design can improve the machining efficiency of part, still can carry out automatic collection to the part after punching a hole, compares traditional mould stamping structure more practical.

As shown in fig. 4-6, in some embodiments, the fixed mold assembly 7 includes a connection plate 701, the connection plate 701 is connected to the top center of the turntable 6, two symmetrical female fixing molds 702 are connected to two sides of the connection plate 701, a sliding groove 703 is formed on the lower surface of the female fixing mold 702, a positioning plate 704 is formed inside the sliding groove 703, wherein the positioning plate 704 is designed according to the protruding portion of the female fixing mold 702, when the positioning plate 704 moves along the inside of the sliding groove 703 in the forward direction by an electric push rod 705, the positioning plate 704 is moved to the protruding portion of the female fixing mold 702 to correspond to the protruding portion of the female fixing mold 702, a part can be placed between the positioning plate 704 and the protruding portion of the female fixing mold 702, and then the part is adsorbed and fixed by opening the electromagnet 707, after the part is punched, the electromagnet 707 is closed, the part loses electromagnetic adsorbability, and is in a movable state, then the positioning plate 704 moves in the sliding groove 703 in the opposite direction by the electric push rod 705, the positioning plate 704 moves into the sliding groove 703, the parts fall into the corresponding collection box 901 at this time, automatic collection of the parts is realized, the side of the concave fixing mold 702 is connected with the electric push rod 705, the output end of the electric push rod 705 extends into the sliding groove 703 and is connected with one side of the positioning plate 704, the top of the positioning plate 704 is provided with a fixing groove 706, and the inner bottom wall of the fixing groove 706 is provided with an electromagnet 707.

As shown in fig. 4-5, in some embodiments, the inner wall of the sliding groove 703 is provided with two symmetrical sliding rails 708, the surface of the positioning plate 704 is provided with a sliding plate 709 adapted to the sliding rails 708, the sliding plate 709 can move back and forth along the inner wall of the sliding rails 708, when a part fixed on the top of the positioning plate 704 is stamped, the sliding rails 708 can also effectively support the positioning plate 704, so as to avoid the occurrence of deformation or damage of the output end of the electric push rod 705 due to excessive force when the positioning plate 704 is connected to the electric push rod 705, the upper and lower surfaces of the connecting plate 701 are provided with a second circular hole 710, the top of the rotating disc 6 is provided with a positioning screw rod 11 adapted to the second circular hole 710, the positioning screw rod 11 extends to the top of the connecting plate 701 through the second circular hole 710, the surface of the positioning screw rod 11 is connected to a circular fixing nut 12 through a thread, when the fixing nut 12 is separated from the surface of the positioning screw rod 11, the fixed die assembly 7 can be taken out from the surface of the turntable 6, the fixed die assembly 7 and the turntable 6 can be assembled quickly, and the fixed die assembly 7 can be replaced quickly when damaged in the later period.

As shown in fig. 2, 3 and 7, in some embodiments, a first concave groove 13 is formed in one side of the working platform 1, the punching assembly 8 includes a hydraulic cylinder 801, the hydraulic cylinder 801 is installed on an inner bottom wall of the first concave groove 13, an L-shaped fixing plate 802 is connected to an output end of the hydraulic cylinder 801, and is installed on the inner bottom wall of the first concave groove 13 through the hydraulic cylinder 801, the hydraulic cylinder 801 can drive the L-shaped fixing plate 802 to make a straight-line motion vertically upward or vertically downward in an inner wall of the first concave groove 13, when the L-shaped fixing plate 802 makes a straight-line motion vertically upward to a highest point, the punching mold 806 is located right above the concave fixing mold 702 on the left side of the connecting plate 701, and then a part adsorbed and fixed on the surface of the electromagnet 707 can be punched, wherein the punching mold 806 is designed according to the position of the fixing part in the concave fixing mold 702, so as to ensure that the parts can correspond to each other when punching, the punching accuracy of the parts is ensured, when the L-shaped fixing plate 802 moves vertically downwards to the lowest point, the stamping die 806 is in contact with the top of the workbench 1, and the stamping assembly 8 is in a non-working state at the moment, so that the stamping assembly 8 can be ensured to reduce the occupied space of the top of the workbench 1, it is required to be noted that the punching stroke between the stamping die 806 and the parts is separately controlled according to the controller 10, so that the problem that the parts are damaged due to the overlarge stamping stroke or not punched thoroughly due to the undersize stamping stroke is solved, two symmetrical L-shaped connecting rods 803 are installed on the side surface of the L-shaped fixing plate 802, the bottom end of the L-shaped connecting rod 803 is connected with an expansion link 804, a buffer spring 805 is sleeved on the surface of the expansion link 804, the other end of the expansion link 804 is connected with the stamping die 806, when the stamping die 806 punches the parts, the expansion link 804 and the buffer spring 805 are compressed with each other, and under the elastic force of the buffer spring 805, the stamping deformation of the part by the stamping die 806 can be effectively prevented.

As shown in fig. 1 and 2, in some embodiments, the other side of the workbench 1 is provided with a second concave groove 14, wherein the second concave groove 14 is designed according to the parts fixed by the positioning plate 704 in the concave fixing mold 702, when the electromagnet 707 is turned off, the parts can be in an active state, and then the electric push rod 705 drives the positioning plate 704 to move to the inside of the sliding groove 703, at which time the parts can fall into the corresponding collection box 901, so that the punched parts can be automatically collected and processed, compared with the conventional mold punching structure, the collection assembly is more automated, the collection assembly 9 comprises a collection box 901, the surface diameter of the collection box 901 is matched with the diameter of the inner wall of the second concave groove 14, the opening of the collection box 901 is at the same horizontal line with the top of the workbench 1, the inner wall of the second concave groove 14 is provided with two symmetrical moving grooves 15, the surface of the collecting box 901 is provided with a moving plate 902 matched with the moving groove 15, and the moving plate 902 can do reciprocating horizontal linear motion on the inner wall of the moving groove 15.

As shown in fig. 1 and 2, in some embodiments, a limiting plate 16 is connected to the bottom side of the workbench 1 through a rotating shaft, the limiting plate 16 moves linearly along the side of the workbench 1 through the rotating shaft, when the collecting box 901 is located in the second concave groove 14, in order to ensure the fixity of the collecting box 901 in the second concave groove 14, the limiting plate 16 can be rotated to the side of the collecting box 901 through the rotating shaft, because the collecting box 901 is designed according to the shape and size of the second concave groove 14, one side of the collecting box 901 is in contact with the inner side wall of the second concave groove 14, and the other side of the collecting box 901 is at the same water level as the side of the workbench 1, when the limiting plate 16 is in close contact with the side of the collecting box 901 parallel to the workbench 1, the side of the collecting box 901 can be limited, thereby ensuring the stability of the placing of the collecting box 901 in the second concave groove 14, when parts sold in the collecting box 901 need to be cleaned, the collection box 901 can be taken out from the inner wall of the second concave groove 14 only by rotating the limit plate 16 to the surface of the workbench 1, and the limit plate 16 is in contact with the corresponding surface of the workbench 1.

The invention also provides a use method of the punching structure of the punching sheet metal die for the automobile parts, which comprises the following steps:

step A, when the electric push rod 705 pushes the positioning plate 704 to move, a sliding plate 709 connected with the surface of the positioning plate 704 makes a horizontal linear motion along the inner wall of the sliding track 708 in the forward direction, when the output stroke of the electric push rod 705 reaches the maximum value, the positioning plate 704 in the fixed die assembly 7 corresponds to the protruding part of the concave fixed die 702 at the moment, then a part needing punching can be placed between the positioning plate 704 and the protruding part of the concave fixed die 702, and because the electromagnet 707 is installed in a fixed groove 706 formed in the top of the positioning plate 704, when the electromagnet 707 is opened, the part can be electromagnetically adsorbed, and the fixity of the part during punching operation can be ensured;

step B, the servo motor 4 drives the rotary disc 6 at the top of the rotary rod 5 to do circular linear motion along the top of the workbench 1, the angle of each rotation of the servo motor 4 is 180 degrees, and the connecting plate 701 is connected to the top of the rotary disc 6, so that two concave fixing dies 702 symmetrically connected at two sides of the connecting plate 701 can be ensured to respectively correspond to the punching assembly 8 and the collecting assembly 9 when doing circular linear motion, the design can ensure that parts in the concave fixing dies 702 at one side can be positioned at the collecting assembly 9 to collect the parts when punching is completed, parts which are not punched in the concave fixing dies 702 at the other side can be positioned at the punching assembly 8 to continue punching, when the parts punched in the concave fixing dies 702 are positioned at the collecting assembly 9 to collect, only the electromagnet 707 is needed to be disconnected, and the electromagnetic property of the parts is lost, the positioning plate 704 is not attracted and fixed with the electromagnet 707 any more, then under the use of the electric push rod 705, the positioning plate 704 makes a horizontal linear motion along the reverse direction of the inner wall of the sliding track 708 through the sliding plate 709, when the positioning plate 704 moves to the inside of the sliding groove 703, the punched parts fall into the collection box 901 in the collection assembly 9, and the processed parts can be collected.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.