A device and method for automatically embedding steel sheets in injection molding

Abstract

This invention provides an automatic steel sheet embedding device and control method in injection molds, including a coil mechanism for carrying coiled steel sheet material, a feeding mechanism for conveying the steel sheet material coil to a stamping mechanism; the stamping mechanism includes a fixed plate and a stamping cylinder mounted above the fixed plate, the output end of the stamping cylinder being connected to an upper stamping die, a lower stamping die driven by a motion cylinder being provided below the upper stamping die, a stamping block being provided at the lower end of the upper stamping die, a positioning block and a stamping groove being provided on the lower stamping die, the stamping groove corresponding to the position of the stamping block, the steel sheet material moving along the length direction of the positioning block to the stamping groove, the stamping cylinder controlling the upper stamping die to move downward relative to the lower stamping die, thereby stamping and shearing the steel sheet connection; a steel sheet conveying mechanism includes a multi-axis moving assembly, the multi-axis moving assembly respectively driving a nozzle for adsorbing the steel sheet on the positioning block and a steel sheet receiving fixture, the steel sheet receiving fixture being provided with several receiving grooves, the nozzle adsorbing the steel sheet on the positioning block and then installing it in the receiving groove.

Description

Technical Field

[0001] This invention relates to an automatic steel sheet embedding device and control method in injection molds. Background Technology

[0002] In the field of injection molding, in-mold embedded steel sheets are an important means of enhancing the strength of plastic products and achieving functional connections, and are widely used in industries such as electronics and automobiles. In existing steel sheet embedding methods, for small-sized and irregularly shaped steel sheets, workers mainly rely on manual placement of each sheet into the injection mold. This manual method has the following drawbacks: firstly, manual placement is inefficient, resulting in long mold opening times for the injection molding machine and extended production cycles; secondly, manual operation is prone to placement errors, leading to unstable product quality. Furthermore, some existing automatic embedding devices often require complete mold replacement or complex adjustments when changing to steel sheets of different specifications, resulting in long replacement cycles, poor versatility, and difficulty in meeting the needs of multi-variety, small-batch production. Therefore, to address the above problems, the purpose of this invention is to provide an automatic in-mold embedded steel sheet device and control method. Summary of the Invention

[0003] This invention provides an automatic steel sheet embedding device and control method in injection molds, which can effectively solve the above-mentioned problems.

[0004] This invention is implemented as follows: An automatic steel sheet embedding device in an injection mold, comprising: A coil mechanism is used to carry steel strips wound into coils; The feeding mechanism is used to convey steel sheet coils to the stamping mechanism; The stamping mechanism includes a fixed plate and a stamping cylinder mounted on the fixed plate. The output end of the stamping cylinder is connected to the upper stamping die. A lower stamping die driven by a motion cylinder is provided below the upper stamping die. A stamping block is provided at the lower end of the upper stamping die. A positioning block and a stamping groove are provided on the lower stamping die. The stamping groove corresponds to the position of the stamping block. The steel strip moves along the length direction of the positioning block to the stamping groove. The stamping cylinder controls the upper stamping die to move downward relative to the lower stamping die, thereby stamping and shearing the steel strip connection. The steel sheet conveying mechanism includes a multi-axis moving assembly, which drives an air nozzle for adsorbing steel sheets on the positioning block and a steel sheet receiving fixture. The steel sheet receiving fixture is provided with several receiving grooves, and the air nozzle is installed in the receiving groove after adsorbing the steel sheet on the positioning block.

[0005] As a further improvement, the feeding mechanism includes a feeding track for connecting the steel strip, a feeding assembly, and a positioning assembly. The feeding assembly includes a feeding motor that drives a sliding block. A first cylinder is positioned above the sliding block, and the output end of the first cylinder is connected to a feeding pin. The positioning assembly includes a second cylinder positioned above the feeding track. A positioning pin is positioned on the second cylinder, and the second cylinder drives the positioning pin to move up and down. The end shapes of the feeding pin and the positioning pin are adapted to the shapes of the positioning holes on the steel strip. The feeding pin is used to insert into the positioning holes of the steel strip to drive the strip forward. The positioning pin is used to insert into the positioning holes of the steel strip before stamping to fix the strip position.

[0006] As a further improvement, the feeding assembly includes a feeding motor connected to a lead screw, a slidable sliding block on the lead screw, a first cylinder above the sliding block, and a feeding pin connected to the output end of the first cylinder. The feeding motor drives the lead screw to rotate, and the lead screw drives the sliding block to move along the feeding track direction.

[0007] As a further improvement, the feeding track is set on the lifting assembly, which includes a lifting motor, a connecting plate connected to the lifting motor, and the feeding track connected to the connecting plate. A first slider is provided on the feeding plate, and a first slide rail is provided on the fixed block. The first slider and the first slide rail are slidably connected.

[0008] As a further improvement, the multi-axis moving assembly includes a Z-axis linear slide module with an air nozzle mounted on it. The Z-axis linear slide module is installed at the moving end of the X-axis linear slide module, allowing the air nozzle to move along the X and Z axes. A Y-axis linear slide module is located below the X-axis linear slide, and a steel plate fixture is installed at the moving end of the Y-axis linear slide module.

[0009] As a further improvement, the moving end of the Z-axis linear slide module is connected to an R-axis hollow rotary motor, and the output end of the R-axis hollow rotary motor is equipped with an air nozzle for adsorbing the steel sheet on the positioning block.

[0010] As a further improvement, the coil mechanism includes a reel support, a feed reel rotatably mounted on the reel support for carrying the coiled steel strip, a limiting bracket extending radially along the feed reel on the reel support, and a rotatable limiting post on the limiting bracket, the limiting post abutting against the side wall of the reel support.

[0011] As a further improvement, the lower die of stamping is provided with a detachable upper die insert, the lower end of which is provided with a stamping block, and the lower die of stamping is provided with a detachable lower die insert, which is provided with a positioning block and a stamping groove.

[0012] A control method for an automatic steel sheet embedding device in an injection mold, applicable to an automatic steel sheet embedding device in an injection mold, includes the following steps: S1: Control the feeding mechanism to advance the steel strip on the coil mechanism a predetermined distance along the feeding direction, so that a steel sheet unit to be stamped on the steel strip reaches above the positioning block of the stamping die of the stamping mechanism; control the feeding mechanism to fix the current position of the steel strip.

[0013] S2: Control the stamping cylinder to drive the upper stamping die downward, so that the stamping block cooperates with the stamping groove on the lower stamping die, and cuts off the connecting part between the steel sheet unit and the steel sheet strip, so that the individual steel sheet is separated and retained on the positioning block of the lower stamping die; control the stamping cylinder to drive the upper stamping die to reset upward; control the motion cylinder to drive the lower stamping die to move laterally from the stamping position to the steel sheet removal position.

[0014] S3: Control the multi-axis moving component to drive the air nozzle to move above the positioning block of the stamping die and adsorb the steel sheet on the positioning block; control the multi-axis moving component to drive the air nozzle to carry the steel sheet to move above the steel sheet receiving fixture and release the steel sheet into the receiving groove of the steel sheet receiving fixture.

[0015] The beneficial effects of this invention are: it completely connects the steel sheet feeding from the roll, the stepping conveyor, the stamping separation, to the final fixture arrangement, replacing the manual operation of placing the steel sheets one by one into the mold, fundamentally solving the problems of low production efficiency and unstable quality mentioned in the background art. Through the cooperation of the fixing plate, positioning block, and stamping groove of the stamping mechanism, the positional accuracy of the steel sheet during shearing and separation is ensured, avoiding the offset caused by manual placement and guaranteeing the consistency of the injection molded products. Integrating the multiple processes required for steel sheet embedding into a single device results in a compact structure, reduced equipment footprint, and easy integration with injection molding machines and robotic arms. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort.

[0017] Figure 1 This invention relates to a three-dimensional assembly of an automatic steel sheet embedding device within an injection mold. Figure 1 .

[0018] Figure 2 This invention relates to a three-dimensional assembly of an automatic steel sheet embedding device within an injection mold. Figure 2 .

[0019] Figure 3 This is a three-dimensional assembly diagram of the feeding mechanism of an automatic steel sheet embedding device in an injection mold according to the present invention.

[0020] Figure 4 This invention relates to a three-dimensional assembly of a stamping mechanism for an automatic steel sheet embedding device within an injection mold. Figure 1 .

[0021] Figure 2 This invention relates to a three-dimensional assembly of a stamping mechanism for an automatic steel sheet embedding device within an injection mold. Figure 6 .

[0022] Figure 5 yes Figure 7 Enlarged schematic diagram of the structure at point A in the middle.

[0023] Figures 1 to 7 This is a three-dimensional assembly diagram of the steel sheet conveying mechanism of an automatic steel sheet embedding device in an injection mold according to the present invention.

[0024] The attached diagram is described below: 10. Roll material mechanism; 11. Roll reel support; 12. Feeding reel; 13. Limiting bracket; 14. Limiting post; 20. Feeding mechanism; 21. Lifting assembly; 211. Lifting motor; 212. Connecting plate; 213. First slider; 214. Fixing block; 215. First slide rail; 216. Feeding track; 22. Feeding assembly; 221. Feeding motor; 222. Lead screw; 223. Sliding block; 224. First cylinder; 225. Feeding pin; 23. Positioning assembly; 231. Second cylinder; 232. Positioning pin; 30. Stamping mechanism; 31. Fixed plate; 32. Stamping cylinder; 33. Upper stamping die; 331. Stamping block; 34. Lower stamping die; 341. Positioning block; 342. Stamping groove; 35. Motion cylinder; 36. Second slider; 37. Second slide rail; 38. Connecting block; 40. Steel sheet conveying mechanism; 41. Z-axis linear slide module; 42. R-axis hollow rotary motor; 421. Air nozzle; 43. X-axis linear slide module; 44. Y-axis linear slide module; 45. Steel sheet receiving fixture; 451. Receiving groove; 100. Steel sheet. Detailed Implementation

[0025] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention. Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention.

[0026] In the description of this invention, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0027] Reference Figure 3 As shown, an automatic steel sheet embedding device in an injection mold includes: The coil mechanism 10 is used to carry the steel strip wound into a coil; The feeding mechanism 20 is used to convey the steel sheet coil to the stamping mechanism 30; The stamping mechanism 30 includes a fixed plate 31 and a stamping cylinder 32 mounted on the fixed plate 31. The output end of the stamping cylinder 32 is connected to the upper stamping die 33. A lower stamping die 34 driven by a motion cylinder 35 is provided below the upper stamping die 33. A stamping block 331 is provided at the lower end of the upper stamping die 33. A positioning block 341 and a stamping groove 342 are provided on the lower stamping die 34. The stamping groove 342 corresponds to the position of the stamping block 331. The steel strip moves along the length direction of the positioning block 341 to the stamping groove 342. The stamping cylinder 32 controls the upper stamping die 33 to move downward relative to the lower stamping die 34, thereby stamping and shearing the steel strip connection. The steel sheet conveying mechanism 40 includes a multi-axis moving assembly, which drives the air nozzle 421 for adsorbing the steel sheet on the positioning block 341 and the steel sheet receiving fixture 45. The steel sheet receiving fixture 45 is provided with several receiving grooves 451. After the air nozzle 421 adsorbs the steel sheet on the positioning block 341, it is installed in the receiving groove 451.

[0028] Reference Figure 7As shown, the feeding mechanism 20 includes a feeding track 216 for connecting steel strip, a feeding assembly 22, and a positioning assembly 23. The feeding assembly 22 includes a feeding motor 221, which drives a sliding block 223. A first cylinder 224 is disposed above the sliding block 223, and the output end of the first cylinder 224 is connected to a feeding pin 225. The positioning assembly 23 includes a second cylinder 231 disposed above the feeding track 216. A positioning pin 232 is disposed on the second cylinder 231, which drives the positioning pin 232 to move up and down. The end shapes of the feeding pin 225 and the positioning pin 232 are adapted to the shape of the positioning hole on the steel strip. The feeding pin 225 is used to insert into the positioning hole of the steel strip to drive the strip to be fed in. The positioning pin 232 is used to insert into the positioning hole of the steel strip before stamping to fix the position of the strip. A positioning assembly 23 is added specifically for fixing the strip before stamping. After the feeding pin 225 completes the feeding action, the positioning pin 232 independently inserts into the strip, forming an alternating feeding and fixing action mechanism. This effectively prevents the strip from micro-movements caused by vibration or tension during stamping, significantly improving the accuracy of the stamping cut point and solving the problem of burrs or dimensional defects caused by strip swaying. For irregularly shaped steel sheets with dimensions of only 3-10mm and uneven structures, the cooperation between the positioning hole and the pin can stably control the feed of small steps, overcoming the shortcomings of traditional clamping and conveying methods that are prone to damage or difficulty in gripping small irregularly shaped parts.

[0029] The feeding assembly 22 includes a feeding motor 221, which is connected to a lead screw 222. A slidable sliding block 223 is provided on the lead screw 222, and a first cylinder 224 is provided above the sliding block 223. The output end of the first cylinder 224 is connected to a feeding pin 225. The feeding motor 221 drives the lead screw 222 to rotate, and the lead screw 222 drives the sliding block 223 to move along the feeding track 216. By using the lead screw 222 to drive in conjunction with a servo or stepper motor, the moving distance of the steel strip can be precisely controlled. Compared with cylinder direct push or belt drive, this mechanical transmission method has good rigidity and high positioning accuracy, which can meet the stringent requirements for positional accuracy when embedding small steel sheets.

[0030] The feeding track 216 is mounted on the lifting assembly 21, which includes a lifting motor 211 connected to a connecting plate 212. The connecting plate 212 is connected to the feeding track 216. A first slider 213 is mounted on the feeding plate, and a first slide rail 215 is mounted on a fixing block 214. The first slider 213 and the first slide rail 215 are slidably connected. The feeding track 216 can be raised and lowered as a whole, meaning that when threading new material or cleaning waste from the track, the track can be lowered to a position that is easy to operate or to avoid other mechanisms. This reduces the difficulty of equipment maintenance for operators and improves line changeover efficiency.

[0031] ReferenceFigures 1 to 2 As shown, the multi-axis moving assembly includes a Z-axis linear slide module 41, on which an air nozzle 421 is provided. The Z-axis linear slide module 41 is installed at the moving end of the X-axis linear slide module 43, so that the air nozzle 421 can move along the X-axis and Z-axis directions. A Y-axis linear slide module 44 is provided below the X-axis linear slide, and a steel sheet receiving fixture 45 is installed at the moving end of the Y-axis linear slide module 44. In this embodiment, the moving end of the Z-axis linear slide module 41 is connected to an R-axis hollow rotary motor 42, and the output end of the R-axis hollow rotary motor 42 is provided with an air nozzle 421 for adsorbing the steel sheet on the positioning block 341. Air nozzle 421 is responsible for transporting materials in the XZ plane, while the receiving fixture is responsible for transferring them along the Y-axis. This separation of motion design allows the arrangement of the steel sheets and the movement of the fixture to occur in parallel or asynchronously, significantly shortening the auxiliary time of injection molding and improving the uptime of the injection molding machine. After adsorbing the steel sheet, air nozzle 421 can be rotated 360° for positioning using an R-axis rotary motor. If the direction of the steel sheet after stamping is inconsistent with the direction required by the injection mold, or if the groove direction of the receiving fixture is different, this mechanism can automatically adjust the angle of the steel sheet during flight or in a static state, achieving automatic attitude correction without the need for manual pre-arrangement of the direction.

[0032] Reference Figures 4 to 5 As shown, the coil mechanism 10 includes a coil support 11 and a feeding coil 12 rotatably mounted on the coil support 11 for carrying the coiled steel strip. A limiting bracket 13 extending radially along the feeding coil 12 is provided on the coil support 11, and a rotatable limiting post 14 is provided on the limiting bracket 13, abutting against the side wall of the coil support 11. The structure of the limiting post 14 abutting against the side wall of the coil support 11 provides slight, uniform frictional damping to the coil. This prevents the coil from continuing to rotate due to inertia when feeding stops, causing the strip to loosen and become entangled, ensuring that the strip is always taut when the feeding mechanism 20 pulls the material, maintaining the stability of the feeding accuracy, and the structure is simple and requires no additional power.

[0033] Reference Figures 1 to 7 As shown, the lower die 34 is equipped with a detachable upper die insert, and a stamping block 331 is provided at the lower end of the upper die insert. The lower die 34 is also equipped with a detachable lower die insert, which includes a positioning block 341 and a stamping groove 342. By standardizing the external dimensions of the die insert, it is not necessary to disassemble the entire stamping die base when changing products; simply removing the old insert and inserting the new insert is sufficient for the changeover. This significantly shortens changeover time, reduces spare parts inventory costs, and demonstrates strong versatility and economy.

[0034] Reference ​ As shown, a control method for an automatic steel sheet embedding device in an injection mold, applied to an automatic steel sheet embedding device in an injection mold, includes the following steps: S1: Control the feeding mechanism 20 to advance the steel strip on the coil mechanism 10 a predetermined distance along the feeding direction, so that a steel sheet unit to be stamped on the steel strip reaches above the positioning block 341 of the stamping die 34 of the stamping mechanism 30; then control the feeding mechanism 20 to fix the current position of the steel strip.

[0035] S2: Control the stamping cylinder 32 to drive the upper stamping die 33 to move downward, so that the stamping block 331 cooperates with the stamping groove 342 on the lower stamping die 34, and cuts off the connecting part between the steel sheet unit and the steel sheet strip, so that the individual steel sheet 100 is separated and retained on the positioning block 341 of the lower stamping die 34; control the stamping cylinder 32 to drive the upper stamping die 33 to reset upward; control the motion cylinder 35 to drive the lower stamping die 34 to move laterally from the stamping position to the steel sheet removal position.

[0036] S3: Control the multi-axis moving component to drive the air nozzle 421 to move above the positioning block 341 of the stamping die 34 and adsorb the steel sheet 100 on the positioning block 341; control the multi-axis moving component to drive the air nozzle 421 to carry the steel sheet 100 to move above the steel sheet receiving fixture 45 and release the steel sheet 100 into the receiving groove 451 of the steel sheet receiving fixture 45.

[0037] In conjunction with the above claims, the workflow of this device is as follows, forming a closed-loop automated production system: The first stage involves automatic feeding and step-by-step feeding. The feeding reel 12 of the coil mechanism 10 loads a coiled steel sheet 100 strip. The limiting post 14 abuts against the side wall of the reel to provide damping and prevent the strip from loosening. The feeding motor 221 drives the lead screw 222 to rotate, which in turn moves the sliding block 223 and the first cylinder 224. The first cylinder 224 presses down, and the feeding pin 225 inserts into the strip positioning hole. The motor rotates again, precisely dragging the strip along the feeding track 216 one step, delivering a steel sheet 100 to be processed above the positioning block 341 of the stamping die 34. The second cylinder 231 immediately drives the positioning pin 232 to press down and insert into the strip positioning hole, firmly fixing the strip and preventing displacement during subsequent stamping. At the same time, the first cylinder 224 retracts the pin and returns to its original position, ready for the next feeding.

[0038] The second stage is micro-stamping separation. The stamping cylinder 32 presses down, driving the upper stamping die 33 (including the detachable upper die insert) downwards. The stamping block 331 engages with the stamping groove 342 on the lower stamping die 34 (including the detachable lower die insert), cutting off the connecting rib of the steel sheet 100 to the strip like scissors. The scrap falls into the bottom scrap pile, and the individual steel sheet 100 remains on the positioning block 341 of the lower die. After the stamping cylinder 32 resets, the motion cylinder 35 pushes the entire lower stamping die 34 horizontally along the slide rail to the material pick-up position, exposing the separated steel sheet 100 to the conveying mechanism.

[0039] The third stage involves intelligent handling and attitude correction. The Z-axis linear slide module 41 descends, and the air nozzle 421 contacts the steel sheet 100 on the lower stamping die 34. After the steel sheet 100 is sucked up by negative pressure, it rises. During the movement or after rising, the R-axis hollow rotary motor 42 starts, driving the air nozzle 421 to rotate at a specific angle, rotating the steel sheet 100, which was originally in a "lateral" or "random" direction on the material strip, to an attitude consistent with the slot direction of the subsequent steel sheet receiving fixture 45.

[0040] The fourth stage involves array arrangement and in-mold embedding. The X-axis linear slide module 43 moves the air nozzle 421, which holds the steel sheet 100, horizontally above the receiving fixture. The Z-axis descends, and the air nozzle 421 breaks the vacuum, precisely placing the steel sheet 100 into the receiving groove 451. This process is repeated until all grooves (e.g., four cavities per mold) on the receiving fixture 45 are filled. At this point, the arrangement of the steel sheets 100 on the receiving fixture perfectly matches the embedding position inside the injection mold. The Y-axis linear slide module 44 smoothly pushes the fully loaded receiving fixture to the designated position, and the injection molding machine robot picks up all the steel sheets 100 at once, placing them into the mold for injection molding.

[0041] When it is necessary to switch to producing a different type of steel sheet 100, the operator does not need to dismantle the entire feed rail 216 or the stamping die base. Only the strip type on the feed reel 12 needs to be changed. The upper / lower die inserts are pulled out, and inserts corresponding to the new steel sheet 100 specification are inserted. The new steel sheet 100 feed pitch parameters are entered into the controller.

[0042] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the invention by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the invention should be included within the scope of protection of the invention.

Claims

1. An automatic steel sheet embedding device in an injection mold, characterized in that, include: The coil mechanism (10) is used to carry the coiled steel strip; The feeding mechanism (20) is used to convey the steel sheet coil to the stamping mechanism (30); The stamping mechanism (30) includes a fixed plate (31) and a stamping cylinder (32) installed above the fixed plate (31). The output end of the stamping cylinder (32) is connected to the upper stamping die (33). A lower stamping die (34) driven by a motion cylinder (35) is provided below the upper stamping die (33). A stamping block (331) is provided at the lower end of the upper stamping die (33). A positioning block (341) and a stamping groove (342) are provided on the lower stamping die (34). The stamping groove (342) corresponds to the position of the stamping block (331). The steel strip moves along the length direction of the positioning block (341) to the stamping groove (342). The stamping cylinder (32) controls the upper stamping die (33) to move down relative to the lower stamping die (34), thereby stamping and shearing the steel strip connection. The steel sheet conveying mechanism (40) includes a multi-axis moving assembly. The multi-axis moving assembly drives the air nozzle (421) for adsorbing the steel sheet on the positioning block (341) and the steel sheet receiving fixture (45). The steel sheet receiving fixture (45) is provided with several receiving grooves (451). After the air nozzle (421) adsorbs the steel sheet on the positioning block (341), it is installed in the receiving groove (451).

2. The automatic steel sheet embedding device in an injection mold according to claim 1, characterized in that, The feeding mechanism (20) includes a feeding track (216) for connecting steel strips, a feeding assembly (22), and a positioning assembly (23); the feeding assembly (22) includes a feeding motor (221), which drives a sliding block (223), and a first cylinder (224) is arranged above the sliding block (223). The output end of the first cylinder (224) is connected to a feeding pin (225). The positioning assembly (23) includes a positioning pin arranged above the feeding track (216). The second cylinder (231) is provided with a positioning pin (232). The second cylinder (231) drives the positioning pin (232) to move up and down. The end shapes of the feeding pin (225) and the positioning pin (232) are adapted to the shape of the positioning hole on the steel strip. The feeding pin (225) is used to insert into the positioning hole of the steel strip to drive the strip to be fed in. The positioning pin (232) is used to insert into the positioning hole of the steel strip before stamping to fix the position of the strip.

3. The automatic steel sheet embedding device in an injection mold according to claim 2, characterized in that, The feeding assembly (22) includes a feeding motor (221), which is connected to a lead screw (222). A sliding block (223) is provided on the lead screw (222), and a first cylinder (224) is provided above the sliding block (223). The output end of the first cylinder (224) is connected to a feeding pin (225). The feeding motor (221) drives the lead screw (222) to rotate, and the lead screw (222) drives the sliding block (223) to move along the feeding track (216).

4. The automatic steel sheet embedding device in an injection mold according to claim 2, characterized in that, The feeding track (216) is set on the lifting assembly (21). The lifting assembly (21) includes a lifting motor (211), which is connected to a connecting plate (212). The connecting plate (212) is connected to the feeding track (216). A first slider (213) is provided on the feeding plate, and a first slide rail (215) is provided on the fixing block (214). The first slider (213) and the first slide rail (215) are slidably connected.

5. The automatic steel sheet embedding device in an injection mold according to claim 1, characterized in that, The multi-axis moving assembly includes a Z-axis linear slide module (41) and an air nozzle (421) on the Z-axis linear slide module (41). The Z-axis linear slide module (41) is installed on the moving end of the X-axis linear slide module (43), so that the air nozzle (421) can move along the X-axis and Z-axis directions. A Y-axis linear slide module (44) is provided below the X-axis linear slide, and a steel plate fixture (45) is installed on the moving end of the Y-axis linear slide module (44).

6. The automatic steel sheet embedding device in an injection mold according to claim 5, characterized in that, The moving end of the Z-axis linear slide module (41) is connected to an R-axis hollow rotary motor (42), and the output end of the R-axis hollow rotary motor (42) is provided with an air nozzle (421) for adsorbing the steel sheet on the positioning block (341).

7. The automatic steel sheet embedding device in an injection mold according to claim 1, characterized in that, The coil mechanism (10) includes a reel support (11) and a feed reel (12) rotatably mounted on the reel support (11) for carrying the coiled steel strip. A limiting bracket (13) is provided on the reel support (11) and extends radially along the feed reel (12). A rotatable limiting post (14) is provided on the limiting bracket (13) and abuts against the side wall of the reel support (11).

8. The automatic steel sheet embedding device in an injection mold according to claim 1, characterized in that, The stamping die (34) is provided with a detachable upper die insert, and the lower end of the upper die insert is provided with a stamping block (331). The stamping die (34) is provided with a detachable lower die insert, and the lower die insert is provided with a positioning block (341) and a stamping groove (342).

9. A control method for an automatic steel sheet embedding device in an injection mold, applied to the automatic steel sheet embedding device in an injection mold as described in any one of claims 1 to 8, characterized in that, Includes the following steps: S1: Control the feeding mechanism (20) to advance the steel strip on the coil mechanism (10) a predetermined distance along the feeding direction, so that a steel sheet unit to be stamped on the steel strip reaches above the positioning block (341) of the stamping die (34) of the stamping mechanism (30); then control the feeding mechanism (20) to fix the current position of the steel strip. S2: Control the stamping cylinder (32) to drive the upper stamping die (33) to move downward, so that the stamping block (331) cooperates with the stamping groove (342) on the lower stamping die (34) to cut off the connection between the steel sheet unit and the steel sheet strip, so that the individual steel sheet is separated and retained on the positioning block (341) of the lower stamping die (34); control the stamping cylinder (32) to drive the upper stamping die (33) to reset upward; control the motion cylinder (35) to drive the lower stamping die (34) to move laterally from the stamping position to the steel sheet removal position. S3: Control the multi-axis moving component to drive the air nozzle (421) to move above the positioning block (341) of the stamping die (34) and adsorb the steel sheet on the positioning block (341); control the multi-axis moving component to drive the air nozzle (421) to carry the steel sheet to move above the steel sheet receiving fixture (45) and release the steel sheet into the receiving groove (451) of the steel sheet receiving fixture (45).

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