Sheet metal stamping die with ejection device

Abstract

The invention discloses a sheet metal stamping die with an ejection device, which comprises two transportation main bodies which are symmetrically arranged and are used for carrying out auxiliary transportation work on a plate-shaped large-area sheet metal; the stamping main body is arranged in the middle of the two conveying main bodies and used for stamping the metal plates entering the stamping main body; and the stamping assembly is arranged at the bottom of the telescopic air cylinder and used for conducting stamping work, and the positions of the two sides of the stamping assembly are further connected with a triggering mechanism. The sheet metal stamping die with the ejection device is provided with the primary ejection mechanism and the secondary ejection mechanism, the primary ejection mechanism is arranged on the outer side of the lower die core, and the secondary ejection mechanism is arranged in the middle of the lower die core, so that after die blanking is completed, the primary ejection mechanism and the secondary ejection mechanism can be started at the same time; and the punched sheet metal and sheet metal raw materials are ejected out together, so that the effects of conveniently and quickly collecting the punched sheet metal and controlling the movement of the sheet metal raw materials are achieved.

Description

Technical Field

[0001] The invention relates to the technical field related to sheet metal stamping, and in particular to a sheet metal stamping die provided with an ejection device. Background Art

[0002] Sheet metal stamping dies are an indispensable part of the metal processing industry and are mainly used to produce metal products such as automotive parts and home appliance casings. With the transformation of the manufacturing industry towards intelligence, higher requirements are placed on the precision and production efficiency of sheet metal stamping dies. At present, sheet metal stamping dies can already meet most industrial needs. The classification of sheet metal stamping dies includes blanking dies, bending dies, drawing dies, forming dies and riveting dies, etc. Each die has its specific processing method and application scenario. For example, blanking dies are used to separate materials along closed or open contours, while bending dies are used to bend sheet blanks or other blanks along straight lines; In the existing market, whether it is a punching die or a bending die, it requires the cooperation between the upper die and the lower die, such as the application number 202420190482.0, a sheet metal stamping die with an ejection device, which relates to the sheet metal stamping technology field. The sheet metal stamping die with an ejection device comprises a lower module; the lower module is fixed to a support frame by bolts, and the support frame and the lower module are both provided with slots for facilitating the sliding of the ejection block, and the bottom of the ejection block is movably connected to the sliding connection frame through a rotating shaft; the sliding connection frame is slidably connected to the slide bar, and the slide bar is movably connected to the slide bar connecting rod, and the slide bar connecting rod is welded to the frame; in the utility model, the slide bar rotates along the slide bar connecting rod, and the ejection block moves along the slots of the support frame and the lower module, so that the sliding connection frame can move with the rotation of the slide bar, and during the rotation of the slide bar, the sliding connection frame will change its position, thereby pulling the ejection block to move, completing the action of ejecting the workpiece, and it is more convenient to use; However, the ejection device can only perform ejection work on the inside, and no ejection mechanism is provided on the outside. As a result, when the punching die is working, only the punching die can be ejected, but the raw material cannot be ejected. When the bending die is working, since the size of the bent sheet metal is too large, the entire sheet metal cannot be completely ejected only by the ejection mechanism in the middle, and the surface of the sheet metal may be damaged. Summary of the invention

[0003] The object of the present invention is to provide a sheet metal stamping die with an ejection device to solve the problem that the ejection device currently on the market proposed in the above background technology can only perform ejection work on the inside and no ejection mechanism is set on the outside, which results in that when the punching die is working, only the die under the punching can be ejected, but the raw material cannot be ejected, and when the bending die is working, due to the large size of the bent sheet metal, only the ejection mechanism in the middle is used for ejection, which will not be able to completely eject the entire sheet metal, and will also cause surface damage to the sheet metal.

[0004] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a sheet metal stamping die provided with an ejection device, comprising a transport body, two of which are symmetrically arranged, for assisting the transport of sheet metal with a large plate area; A stamping body, which is arranged in the middle of the two transport bodies and is used to stamp the sheet metal entering the interior thereof; The stamping body comprises: The fixed bracket has a "U"-shaped cross section, and two telescopic cylinders are symmetrically arranged at the top; A fixed base, which is fixed to the bottom of the fixed bracket and has a lower mold core disposed on its top; The stamping assembly is arranged at the bottom of the telescopic cylinder and is used for stamping work. The two sides of the stamping assembly are also connected to the trigger mechanism. When the trigger mechanism moves up and down with the stamping assembly, it can trigger the linkage mechanism on the outside of the fixed base to start. The top of the linkage mechanism is connected to the main control mechanism. The main control mechanism is used to control the ejection work of the primary ejection mechanism and the secondary ejection mechanism at the same time.

[0005] Preferably, the transport body includes a supporting side plate, a driving motor, a transport roller, a pulley and a belt, and two supporting side plates are symmetrically arranged, and transport rollers are evenly spaced between the two supporting side plates, and pulleys are coaxially connected to the outer sides of the transport rollers, and adjacent pulleys are connected by belts, and at the same time, the top end of one of the pulleys is coaxially connected to the driving motor on the outer side of the supporting side plate.

[0006] Preferably, a reserved groove is provided on the inner side of the fixed base, and a main control mechanism, a primary ejection mechanism, an intermediate mechanism and a secondary ejection mechanism are sequentially provided inside the reserved groove from bottom to top, and a secondary control mechanism is also provided on the outer side of the intermediate mechanism for independently controlling the movement of the intermediate mechanism to complete the independent start-up work of the secondary ejection mechanism.

[0007] Preferably, the size of the lower mold core is symmetrical to the size of the stamping assembly, and a placement groove is provided in the middle of the lower mold core for the movement and ejection work of the secondary ejection mechanism. A push plate corresponding to its size line is also provided above the lower mold core, and the push plate is ejected and moved by the primary ejection mechanism.

[0008] Preferably, the stamping assembly comprises a connecting plate and a stamping block, the bottom of the connecting plate is provided with a stamping block, and the stamping block is used to engage with the lower die core to complete the stamping work; The two ends of the connecting plate are provided with through holes that pass through the outside of the limiting rod, and the outside of the limiting rod is cooperated with a compression spring connected to the top of the connecting plate, the tops of the limiting rod and the compression spring are fixed to the top of the fixed bracket, and the bottom of the limiting rod is fixed above the fixed base.

[0009] Preferably, the trigger mechanism is arranged in an "L"-shaped structure, and one side of the groove arranged inside the trigger mechanism is evenly distributed with tooth blocks for meshing with the linkage mechanism; The linkage mechanism includes a rotating gear, a first conveyor disk, a conveyor belt, a second conveyor disk and a rotating shaft. The first conveyor disk is coaxially connected to the inner side of the rotating gear, and a conveyor belt is arranged on the outside of the first conveyor disk and connected to the second conveyor disk. The top end shaft of the first conveyor disk is connected to the outer wall bearing of the fixed base, the top end of the second conveyor disk is coaxially connected to the rotating shaft, and the top end of the rotating shaft passes through the outer wall of the fixed base and is connected to the main control mechanism inside it.

[0010] Preferably, the primary ejection mechanism includes a primary ejection block and a ejector rod, the top of the primary ejection block is symmetrically provided with an ejector rod, and the outer surfaces of the primary ejection block and the ejector rod are both smooth surfaces, and the material is metal, and the primary ejection block is arranged inside the reserved groove, and the ejector rod slides flexibly in the slide groove in the middle of the lower mold core.

[0011] Preferably, the secondary ejection mechanism comprises a secondary ejection block, a connecting rod, a return spring and a fixed plate, the bottom of the secondary ejection block is integrally mounted with a connecting rod, and a return spring is arranged outside the connecting rod to connect with the inside of the placement groove, and a plate-shaped fixed plate is also fixed to the bottom of the connecting rod; Two groups of intermediate mechanisms are symmetrically arranged at the bottom of the fixed plate, and the intermediate mechanism includes a rotating plate and a connecting shaft. A connecting shaft is arranged in the middle of the rotating plate, and the bottom of the connecting shaft is fixed above the primary top block. The rotating plate is initially arranged in an inclined structure.

[0012] Preferably, a sub-control mechanism is also provided above the outer top end of the intermediate mechanism, and includes a pushing cylinder and a pushing block. A pushing block is provided at the bottom of the pushing cylinder, and the position of the pushing block corresponds to the outer position of the rotating plate. The top end of the pushing cylinder is connected to the top end of the reserved groove.

[0013] Preferably, the main control mechanism includes a rotating cam and a torsion spring, the rotating cam is coaxially connected to the rotating shaft, and a torsion spring is provided on the outside of the shaft outside the rotating cam and connected to the inner wall of the reserved groove.

[0014] Compared with the prior art, the beneficial effects of the present invention are as follows: the sheet metal stamping die provided with an ejection device is provided with a primary ejection mechanism and a secondary ejection mechanism, the primary ejection mechanism is provided at the outer position of the lower die core, and the secondary ejection mechanism is provided at the middle position of the lower die core, so after the die punching is completed, the primary ejection mechanism and the secondary ejection mechanism can be started at the same time to eject the punched sheet metal and the sheet metal raw material together, so as to facilitate and quickly collect the punched sheet metal and control the movement of the sheet metal raw material, and when bending, when the size of the sheet metal is too large, the secondary ejection mechanism and the primary ejection mechanism can also work simultaneously to complete the ejection of a large area of ​​sheet metal without causing damage to the sheet metal; When efficient ejection in the middle is required, the auxiliary control mechanism can also be started to control the ejection length of the secondary ejection mechanism, so that the ejection work with greater force can be carried out in the middle position, which is convenient for quickly ejecting the sheet metal engaged in the middle, and the phenomenon of too small ejection force will not occur. When the whole device is performing sheet metal stamping, its ejection method can be flexibly adjusted according to the specific situation, which is more convenient to operate, has a wider range of use, and is more efficient. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the main structure of the present invention; Figure 2 It is a side view structural schematic diagram of the present invention; Figure 3 This is a schematic diagram of the punching main body structure of the present invention; Figure 4 It is a schematic diagram of a partially enlarged structure of the transport body of the present invention; Figure 5 It is a schematic diagram of the half-section front view of the punching body of the present invention; Figure 6 It is a partial enlarged structural schematic diagram of the secondary ejection mechanism of the present invention; Figure 7 This is a schematic diagram of a partially enlarged structure of the interior of the reserved groove of the present invention; Figure 8 It is a schematic diagram of the half-section bottom view of the punching body of the present invention; Fig. 9 It is a schematic diagram of a partially enlarged structure of the connection between the trigger mechanism and the linkage mechanism of the present invention viewed from above; Fig.10 It is a schematic diagram of a partially enlarged side view of the connection between the trigger mechanism and the linkage mechanism of the present invention; Fig.11 It is a schematic diagram of the structure of the ejection mechanism controlled by the main control mechanism and the side control mechanism of the present invention.

[0016] In the figure: 1. transport body; 101. support side plate; 102. drive motor; 103. transport roller; 104. pulley; 105. belt; 2. fixed bracket; 3. telescopic cylinder; 4. fixed base; 41. reserved groove; 5. lower mold core; 51. placement groove; 52. push plate; 6. stamping assembly; 61. connecting plate; 62. stamping block; 7. trigger mechanism; 8. linkage mechanism; 81. rotating gear; 82. first conveyor disc; 83. conveyor belt; 84. second conveyor disc ;85. Rotating shaft;9. Limit rod;10. Compression spring;11. Primary ejection mechanism;111. Primary ejection block;112. Ejector rod;12. Secondary ejection mechanism;121. Secondary ejection block;122. Connecting rod;123. Return spring;124. Fixed plate;13. Intermediate mechanism;131. Rotating plate;132. Connecting shaft;14. Main control mechanism;141. Rotating cam;142. Torsion spring;15. Auxiliary control mechanism;151. Push cylinder;152. Push block. DETAILED DESCRIPTION

[0017] 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 described embodiments 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 creative work are within the scope of protection of the present invention.

[0018] See also Figure 1-11 , the present invention provides a technical solution: a sheet metal stamping die provided with an ejection device, comprising a transport body 1, two of which are symmetrically arranged, for assisting the transport of sheet metal with a large plate area; A stamping body, which is arranged in the middle of the two transport bodies 1 and is used to perform stamping work on the sheet metal entering the interior thereof; The stamping body includes; The fixed bracket 2 has a "U"-shaped cross section, and two telescopic cylinders 3 are symmetrically arranged at the top thereof; A fixed base 4, which is fixed to the bottom of the fixed bracket 2, and a lower mold core 5 is provided at the top thereof; The punching assembly 6 is arranged at the bottom of the telescopic cylinder 3 and is used for punching. The two sides of the punching assembly 6 are also connected to the trigger mechanism 7. When the trigger mechanism 7 moves up and down with the punching assembly 6, it can trigger the linkage mechanism 8 on the outside of the fixed base 4 to start. The top of the linkage mechanism 8 is connected to the main control mechanism 14. The main control mechanism 14 is used to control the ejection work of the primary ejection mechanism 11 and the secondary ejection mechanism 12 at the same time. The present application provides a sheet metal stamping die with a primary ejection mechanism 11 and a secondary ejection mechanism 12. Specifically, when in use, the sheet metal to be stamped is stacked and placed in a storage frame directly above the transport body 1, or a large area of ​​plate-shaped sheet metal is directly placed above the transport body 1. After the workpiece to be processed is transported to the position of the stamping body 1, the staff manually controls the workpiece to be processed to the top of the lower mold core 5, and starts the telescopic cylinder 3, so that it mobilizes the stamping assembly 6 at the bottom thereof to descend, and engages with the lower mold core 5 to complete the stamping work. When stamping, when the stamping assembly 6 descends, it will drive the trigger mechanism 7 and then drive the linkage mechanism 8 to work, so that the linkage mechanism 8 drives the main control mechanism 14 to work, so that the primary ejection mechanism 11 and the secondary ejection mechanism 12 move downward in the middle to complete the stamping work. After the stamping is completed, the trigger mechanism 7 moves upward, which will cause the linkage mechanism 8 to work in the opposite direction, so that the primary ejection mechanism 11 and the secondary ejection mechanism 12 move upward in the middle, thereby completing the ejection work.

[0019] Among them, according to Figure, Figure 2 and Figure 4 As shown, the transport body 1 includes a supporting side plate 101, a driving motor 102, a transport roller 103, a pulley 104 and a belt 105. Two supporting side plates 101 are symmetrically arranged, and the transport rollers 103 are evenly spaced between the two supporting side plates 101. The outer side of the transport roller 103 is coaxially connected with a pulley 104, and adjacent pulleys 104 are connected by a belt 105. At the same time, the top end of a pulley 104 is coaxially connected to the driving motor 102 on the outer side of the supporting side plate 101. Specifically, when transporting, it is necessary to start the drive motor 102 so that it can drive the pulley 104 and the transport roller 103 at its top to rotate. With the setting of the belt 105, each transport roller 103 can be rotated. Therefore, when the sheet metal to be stamped is set above the transport roller 103, it can move and work with the rotation of the transport roller 103.

[0020] In this application, according to Figure 3 , Figure 5 and Figure 8As shown, a reserved groove 41 is provided on the inner side of the fixed base 4, and the reserved groove 41 is provided with a main control mechanism 14, a primary ejection mechanism 11, an intermediate mechanism 13 and a secondary ejection mechanism 12 in sequence from bottom to top, and a secondary control mechanism 15 is also provided on the outer side of the intermediate mechanism 13, which is used to independently control the movement of the intermediate mechanism 13 and complete the independent start-up work of the secondary ejection mechanism 12; The size of the lower mold core 5 is symmetrical to that of the stamping assembly 6, and a placement groove 51 is provided in the middle of the lower mold core 5 for the movement and ejection work of the secondary ejection mechanism 12. A push plate 52 corresponding to its size line is also provided above the lower mold core 5, and the push plate 52 is ejected and moved by the primary ejection mechanism 11.

[0021] The stamping assembly 6 includes a connecting plate 61 and a stamping block 62. The stamping block 62 is provided at the bottom of the connecting plate 61. The stamping block 62 is used to engage with the lower die core 5 to complete the stamping work. Both ends of the connecting plate 61 are provided with through holes, which penetrate the outside of the limiting rod 9, and the outside of the limiting rod 9 cooperates with a compression spring 10 to be connected with the top of the connecting plate 61, the tops of the limiting rod 9 and the compression spring 10 are both fixed to the top of the fixed bracket 2, and the bottom of the limiting rod 9 is fixed above the fixed base 4; Specifically, when the telescopic cylinder 3 is working, the punching block 62 will be driven to move downward through the connecting plate 61 at the bottom thereof. When the connecting plate 61 is lowered, since the perforations are arranged on both sides thereof, in combination with the setting of the limit rod 9 and the compression spring 10, the connecting plate 61 can be ensured to move downward stably. When the connecting plate 61 is lowered, the trigger mechanisms 7 on both sides thereof will be driven to move downward. When the trigger mechanism 7 is lowered, it will engage with the linkage mechanism 8, so that the linkage mechanism 8 drives the main control mechanism 14 at the top thereof to start, thereby causing its rotation to drive the primary ejection mechanism 11 and the secondary ejection mechanism 12 to move up and down, thereby completing the ejection work after stamping. Since the top of the primary ejection mechanism 11 is connected to the push plate 52, under the action of the push plate 52, the outer side of the sheet metal can be ejected. Since the secondary ejection mechanism 12 is arranged in the placement groove 51 in the middle of the lower mold core 5, under the action of the secondary ejection mechanism 12, the middle ejection work of the sheet metal can also be completed.

[0022] Furthermore, according to Fig. 9 , Fig.10 and Fig.11 As shown, the trigger mechanism 7 is arranged in an "L"-shaped structure, and teeth are evenly distributed on one side of the groove arranged inside the trigger mechanism 7, which is used to mesh with the linkage mechanism 8; The linkage mechanism 8 includes a rotating gear 81, a first conveying disc 82, a conveyor belt 83, a second conveying disc 84 and a rotating shaft 85. The first conveying disc 82 is coaxially connected to the inner side of the rotating gear 81, and a conveyor belt 83 is arranged on the outer side of the first conveying disc 82 to connect with the second conveying disc 84. The top end axis of the first conveying disc 82 is connected to the outer wall bearing of the fixed base 4. The top end of the second conveying disc 84 is coaxially connected to the rotating shaft 85, and the top end of the rotating shaft 85 penetrates the outer wall of the fixed base 4 and is connected to the main control mechanism 14 inside it. Specifically, when the trigger mechanism 7 moves up and down, the tooth block in the inner groove thereof will mesh with the rotating gear 81, thereby causing the first conveyor plate 82 coaxially connected to the rotating gear 81 to rotate, and in conjunction with the setting of the conveyor belt 83, the second conveyor plate 84 will also rotate, thereby causing the rotating shaft 85 at the top of the second conveyor plate 84 to rotate, and when the rotating shaft 85 rotates, the main control mechanism 14 at the top thereof will be started, thereby achieving the ejection effect.

[0023] As a further preferred embodiment of this invention, according to Figure 5 , Figure 6 , Figure 7 and Fig.11 As shown, the primary ejection mechanism 11 includes a primary ejection block 111 and a ejector rod 112. The ejector rod 112 is symmetrically arranged on the top of the primary ejection block 111, and the outer surfaces of the primary ejection block 111 and the ejector rod 112 are both smooth surfaces, and the material is metal. The primary ejection block 111 is arranged inside the reserved groove 41, and the ejector rod 112 slides flexibly in the slide groove in the middle of the lower mold core 5.

[0024] The secondary ejection mechanism 12 includes a secondary ejection block 121, a connecting rod 122, a return spring 123 and a fixing plate 124. The bottom of the secondary ejection block 121 is integrally mounted with the connecting rod 122, and the outer portion of the connecting rod 122 is provided with a return spring 123 to connect with the inner portion of the placement groove 51, and a plate-shaped fixing plate 124 is also fixed to the bottom of the connecting rod 122; Two sets of intermediate mechanisms 13 are symmetrically arranged at the bottom of the fixed plate 124. The intermediate mechanism 13 includes a rotating plate 131 and a connecting shaft 132. The connecting shaft 132 is arranged in the middle of the rotating plate 131, and the bottom of the connecting shaft 132 is fixed above the primary top block 111. The rotating plate 131 is initially arranged in an inclined structure.

[0025] A sub-control mechanism 15 is also arranged above the outer top end of the intermediate mechanism 13, and it includes a pushing cylinder 151 and a pushing block 152. A pushing block 152 is arranged at the bottom of the pushing cylinder 151, and the position of the pushing block 152 corresponds to the outer position of the rotating plate 131, and the top end of the pushing cylinder 151 is connected to the top end of the reserved groove 41.

[0026] The main control mechanism 14 includes a rotating cam 141 and a torsion spring 142. The rotating cam 141 is coaxially connected to the rotating shaft 85, and a torsion spring 142 is arranged outside the shaft outside the rotating cam 141 and connected to the inner wall of the reserved groove 41. Specifically, when the rotating shaft 85 rotates, it drives the rotating cam 141 coaxially connected thereto to rotate, and when the rotating cam 141 rotates, its top end will continuously squeeze the primary ejector block 111 on the primary ejection mechanism 11, and when squeezing, the primary ejector block 111 will rise, and when not squeezing, since the outer surface of the primary ejector block 111 is a smooth surface, the primary ejector block 111 can automatically drop under the effect of its metal material without performing the ejection work, and when the primary ejector block 111 rises, it will cause the ejector rod 112 at its top end to rise, so the ejector rod 112 will drive the push plate 52 at its top end to move upward, completing the ejection work on the outside; When the primary ejection block 111 rises, it drives the intermediate mechanism 13 at its top to rise. When it rises, since the outer top of the rotating plate 131 above it is provided with a secondary control mechanism 15, the outer side of the rotating plate 131 and the push block 152 are in contact and squeezed with each other, thereby causing the rotating plate 131 to rotate, so that the inner side of the rotating plate 131 moves upward, driving the squeezing block at its top to squeeze the fixed plate 124 at the bottom of the secondary ejection mechanism 12 upward, thereby causing the fixed plate 124 to move upward through the connecting rod 12 2 drives the secondary ejector block 121 at the top thereof to move upward to complete the extrusion ejection work; in the present application, when the rotation angle of the rotating plate 131 is too small, the pushing cylinder 151 can also be started to drive the pushing block 152 at the top thereof to descend, thereby making the rotation range of the top of the entire rotating plate 131 larger, ensuring a larger moving length of the secondary ejector block 121, thereby ensuring a greater force in the middle, and facilitating the sheet metal mold engaged in the middle to be separated and ejected. The contents not described in detail in this specification belong to the prior art known to professional and technical personnel in this field.

[0027] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to 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 protection scope of the present invention.

Claims

1. A sheet metal stamping die provided with an ejection device, comprising: The transport body (1) is symmetrically provided with two parts, and is used for assisting the transport of large-area sheet metal; A stamping body, which is arranged in the middle of the two transport bodies (1) and is used to perform stamping work on the sheet metal entering the interior thereof; Features: The stamping body comprises: The fixed bracket (2) has a U-shaped cross section and two telescopic cylinders (3) are symmetrically arranged at the top thereof; A fixed base (4), which is fixed to the bottom of the fixed bracket (2) and has a lower mold core (5) disposed at the top thereof; A punching assembly (6) is arranged at the bottom of the telescopic cylinder (3) and is used for punching work. The two sides of the punching assembly (6) are also connected to the trigger mechanism (7). When the trigger mechanism (7) moves up and down with the punching assembly (6), it can trigger the linkage mechanism (8) outside the fixed base (4) to start. The top of the linkage mechanism (8) is connected to the main control mechanism (14). The main control mechanism (14) is used to control the ejection work of the primary ejection mechanism (11) and the secondary ejection mechanism (12) at the same time.

2. A sheet metal stamping die with an ejection device according to claim 1, characterized in that: The transport body (1) comprises a supporting side plate (101), a driving motor (102), a transport roller (103), a pulley (104) and a belt (105); two supporting side plates (101) are symmetrically arranged, and transport rollers (103) are evenly spaced between the two supporting side plates (101); the outer sides of the transport rollers (103) are coaxially connected to the pulleys (104); adjacent pulleys (104) are connected via the belt (105); and the top end of one pulley (104) is coaxially connected to the driving motor (102) on the outer side of the supporting side plate (101).

3. A sheet metal stamping die with an ejection device according to claim 1, characterized in that: A reserved groove (41) is provided on the inner side of the fixed base (4), and a main control mechanism (14), a primary ejection mechanism (11), an intermediate mechanism (13) and a secondary ejection mechanism (12) are arranged in sequence from bottom to top inside the reserved groove (41), and a secondary control mechanism (15) is also provided on the outer side of the intermediate mechanism (13) for independently controlling the movement of the intermediate mechanism (13) to complete the independent start-up work of the secondary ejection mechanism (12).

4. A sheet metal stamping die with an ejection device according to claim 3, characterized in that: The size of the lower mold core (5) is symmetrical to the size of the punch assembly (6), and a placement groove (51) is provided in the middle of the lower mold core (5) for the movement and ejection of the secondary ejection mechanism (12). A push plate (52) corresponding to the size line of the lower mold core (5) is also provided above the lower mold core (5), and the push plate (52) is moved for ejection by the primary ejection mechanism (11) below.

5. The sheet metal stamping die with an ejection device according to claim 1, characterized in that: The punching assembly (6) comprises a connecting plate (61) and a punching block (62); the bottom of the connecting plate (61) is provided with a punching block (62); the punching block (62) is used to engage with the lower die core (5) to complete the punching work; Both ends of the connecting plate (61) are provided with through holes that penetrate the outside of the limiting rod (9), and the outside of the limiting rod (9) cooperates with a compression spring (10) to connect with the top end of the connecting plate (61), the top ends of the limiting rod (9) and the compression spring (10) are both fixed to the top of the fixed bracket (2), and the bottom of the limiting rod (9) is fixed above the fixed base (4).

6. A sheet metal stamping die with an ejection device according to claim 1, characterized in that: The trigger mechanism (7) is arranged in an "L"-shaped structure, and teeth are evenly distributed on one side of the groove arranged on the inner side thereof, for meshing with the linkage mechanism (8); The linkage mechanism (8) comprises a rotating gear (81), a first conveying disk (82), a conveyor belt (83), a second conveying disk (84) and a rotating shaft (85); the first conveying disk (82) is coaxially connected to the inner side of the rotating gear (81); a conveyor belt (83) is arranged on the outer side of the first conveying disk (82) and connected to the second conveying disk (84); the top end axis of the first conveying disk (82) is connected to the outer wall bearing of the fixed base (4); the top end of the second conveying disk (84) is coaxially connected to the rotating shaft (85); the top end of the rotating shaft (85) passes through the outer wall of the fixed base (4) and is connected to the main control mechanism (14) inside the fixed base (4).

7. A sheet metal stamping die with an ejection device according to claim 4, characterized in that: The primary ejection mechanism (11) comprises a primary ejection block (111) and an ejector rod (112). The ejector rod (112) is symmetrically arranged at the top of the primary ejection block (111). The exteriors of the primary ejection block (111) and the ejector rod (112) are both smooth surfaces and are made of metal. The primary ejection block (111) is arranged inside the reserved groove (41), and the ejector rod (112) slides flexibly in the slide groove in the middle of the lower mold core (5).

8. The sheet metal stamping die with an ejection device according to claim 1, characterized in that: The secondary ejection mechanism (12) comprises a secondary ejection block (121), a connecting rod (122), a return spring (123) and a fixing plate (124); the bottom of the secondary ejection block (121) is integrally mounted with the connecting rod (122); the outside of the connecting rod (122) is provided with a return spring (123) connected to the inside of the placement groove (51); and the bottom of the connecting rod (122) is also fixed with a plate-shaped fixing plate (124); Two groups of intermediate mechanisms (13) are symmetrically arranged at the bottom of the fixed plate (124), the intermediate mechanism (13) comprising a rotating plate (131) and a connecting shaft (132), a connecting shaft (132) is arranged in the middle of the rotating plate (131), and the bottom of the connecting shaft (132) is fixed above the primary top block (111), and the rotating plate (131) is initially arranged in an inclined structure.

9. A sheet metal stamping die with an ejection device according to claim 8, characterized in that: A sub-control mechanism (15) is also provided above the outer top end of the intermediate mechanism (13), and comprises a pushing cylinder (151) and a pushing block (152). The bottom of the pushing cylinder (151) is provided with a pushing block (152), and the position of the pushing block (152) corresponds to the outer position of the rotating plate (131). The top end of the pushing cylinder (151) is connected to the top end of the reserved groove (41).

10. The sheet metal stamping die with an ejection device according to claim 1, characterized in that: The main control mechanism (14) comprises a rotating cam (141) and a torsion spring (142); the rotating cam (141) is coaxially connected to the rotating shaft (85); and a torsion spring (142) is provided on the outside of the shaft outside the rotating cam (141) and is connected to the inner wall of the reserved groove (41).

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