Automatic injection molding system and control method thereof

Abstract

The present invention belongs to the technical field of automation equipment, and specifically relates to an automatic injection molding system, including a first punching device, a first material picking and unloading device, a first injection molding device, a second punching device and a first testing device, wherein the first punching device is used to punch metal parts to be processed, and the first material picking and unloading device is used to transfer metal parts, and the metal parts pass through the first injection molding device, the second punching device and the first testing device in sequence from the first punching device through the first material picking and unloading device. The present invention can effectively improve the degree of automation of metal part punching and injection molding, and significantly enhance the controllability of system operation, which can not only timely detect the effect of metal part punching and injection molding, but also improve the quality of metal part punching and injection molding. At the same time, the present invention also provides a control method for an automatic injection molding system.

Description

Technical Field

[0001] The invention belongs to the technical field of automation equipment, and in particular relates to an automatic injection molding system and a control method thereof. Background Art

[0002] In the processing technology of combining metal parts and plastic parts, the injection molding machine can fill plastic on the metal parts so that the metal parts and plastic parts are combined to form the desired processed products. However, the inventors found that the existing injection molding system requires manual loading, which is easy to cause errors in the injection molding process and is not conducive to controlling the accuracy of product processing. In addition, the existing injection molding system cannot take into account the processing procedures such as punching, injection molding and testing, has a low degree of automation and low production efficiency, and cannot meet the needs of processing and production.

[0003] Therefore, it is urgent to propose a new automatic injection molding system and control method to solve the above problems. Summary of the invention

[0004] One of the purposes of the present invention is to provide an automatic injection molding system in view of the deficiencies in the prior art, which has a high degree of automation and good operating stability, and can effectively solve the problem of how to balance processing steps such as punching, injection molding and testing, thereby improving the production efficiency of the injection molding system.

[0005] In order to achieve the above object, the present invention adopts the following technical solution:

[0006] An automatic injection molding system comprises a first punching device, a first material picking and placing device, a first injection molding device, a second punching device and a first testing device, wherein the first punching device is used for punching a metal part to be processed, the first material picking and placing device is used for transferring the metal part, the metal part passes through the first injection molding device, the second punching device and the first testing device in sequence from the first punching device through the first material picking and placing device, the second punching device is used for processing and punching the part of the metal part that is not punched by the first punching device, the first punching device, the first injection molding device, the second punching device and the first testing device surround the first material picking and placing device, thereby improving the moving efficiency of the first material picking and placing device, and the metal part passes through the first punching device, the first injection molding device, the second punching device and the first testing device in sequence during the processing.

[0007] Furthermore, the injection molding system also includes a second material picking and placing device and a second injection molding device, the second material picking and placing device is arranged between the first testing device and the second injection molding device, the second material picking and placing device is used to transfer the metal part, the first testing device is used to detect the quality of the metal part after being processed by the first punching device, the first injection molding device and the second punching device, when the metal part processed by the above devices has excellent quality, the second material picking and placing device can transfer the processed metal part from the first testing device to the second injection molding device, and the second injection molding device is used to improve the mechanical properties of the metal part.

[0008] Furthermore, the injection molding system also includes a second testing device, and the metal part passes through the second injection molding device and the second testing device in sequence from the first testing device through the second material picking and unloading device. The metal part passes through the first testing device, the second injection molding device and the second testing device in sequence during the processing, and the second testing device is used to detect the conductivity, insulation performance, mechanical properties and oxidation status of the metal part, and can screen out metal parts with good conductive stability and high mechanical strength.

[0009] Furthermore, the first punching device includes a PIN pin feeding assembly, a PIN pin insertion assembly and a punch press, the PIN pin feeding assembly is connected to the PIN pin insertion assembly, a plurality of PIN pins are transmitted from the PIN pin feeding assembly to the PIN pin insertion assembly, the punch press and the PIN pin insertion assembly are arranged in parallel, the punch press and the PIN pin insertion assembly are respectively connected to a driver, the driver may be a motor or a cylinder, under the control of the driver, the PIN pin insertion assembly inserts the PIN pin into the metal part, and the punch die of the punch press performs punching processing on the metal part.

[0010] Furthermore, the first punching device also includes a safety light curtain, a guide rail and a mold base, the safety light curtain and the PIN needle feeding assembly are both arranged on the side of the guide rail, the punch press and the PIN needle insertion assembly are both arranged above the guide rail, and the mold base is arranged on the guide rail, wherein the safety light curtain can prevent the first punching device from injuring the human body, thereby improving the safety of system operation, and the mold base is connected to a driver, when the metal part to be processed is placed on the mold base, the mold base slides along the guide rail in sequence toward the PIN needle insertion assembly and the punch press, thereby realizing efficient and automatic insertion of PIN needles and punching of metal parts.

[0011] Furthermore, the first material picking and unloading device includes a control module, a robotic arm and a grabbing assembly, the two ends of the robotic arm are respectively connected to the control module and the grabbing assembly, the robotic arm and the grabbing assembly are both electrically connected to the control module, and under the control of the control module, the robotic arm can realize circumferential swing and up and down swing, and the grabbing assembly respectively abuts against the first punching device, the first injection molding device, the second punching device and the first testing device under the extension action of the robotic arm.

[0012] Furthermore, the second punching device comprises a slide rail, a first punching die, a second punching die and a waste hopper, the first punching die is arranged on the slide rail, the second punching die is arranged above the slide rail, the waste hopper is arranged below the second punching die, and in the second punching device, the top of the waste hopper is below the top of the slide rail, when the first injection molding device injects the metal part, the first material picking and placing device transfers the injected metal part from the first injection molding device to the first of the second punching device. The punching die, the metal part of the first punching die slides from the front end of the slide rail to the bottom of the second punching die, and the second punching die presses down on the first punching die, so that the first punching die and the second punching die jointly process the part of the metal part that has not been punched by the first punching device, and the punching waste falls directly into the waste hopper under the action of its own gravity. In addition, after the metal part is punched by the second punching device, the first punching die and the second punching die are separated, and the metal part slides back to the front end of the slide rail under the driving action of the driver connected to the first punching die.

[0013] Furthermore, a photoelectric sensor is provided on the side of the slide rail, and a buffer is provided at the end of the slide rail. The photoelectric sensor is used to detect the positions of the first punching die and the second punching die, and the buffer is used to prevent the first punching die from sliding out of the slide rail. A driving cylinder is connected to the top of the second punching die.

[0014] Furthermore, the first testing device includes a conveying track, a detection module, a placement table and a supporting seat, the detection module is arranged around the conveying track, the placement table is arranged at the discharge port of the conveying track, the placement table constitutes an emergency buffer zone of the automatic injection molding system, the conveying track, the detection module and the placement table are all arranged on the supporting seat, and a rejection box is arranged on the side of the supporting seat, and the rejection box is used to place defective metal parts.

[0015] Furthermore, the detection module includes a first probe module, a second probe module, a third probe module and a positioning module, the first probe module corresponds to the positioning module, the second probe module is arranged at the side of the positioning module, the third probe module is arranged at the bottom of the positioning module, and the third probe module is connected to a driver. During the detection process, the positioning module and the first probe module jointly clamp the metal part to be detected, the first probe module, the second probe module and the third probe module jointly abut the metal part, and comprehensively and effectively detect the pin stability of the metal part and whether the pin is missing on the metal part.

[0016] Furthermore, the second testing device comprises a conveying frame, a conduction testing component, a position detection component, an image detection component, a turntable and a screening slot, wherein the conveying frame, the conduction testing component, the position detection component and the image detection component are circumferentially distributed, the conveying frame, the conduction testing component, the position detection component and the image detection component are all arranged on the outside of the turntable, and the screening slot is arranged on the side of the conveying frame, and when the second material taking and placing device transfers the metal piece from the second injection molding device to the conveying frame of the second testing device, the metal piece on the conveying frame passes through the guide groove driven by the turntable. The conductive test component comprises a position detection component and an image detection component; the voltage detection chip provided in the conductive test component can effectively detect whether multiple pins in the metal part are bent and conflict with each other, the detection probe and displacement sensor provided in the position detection component can effectively detect whether the pins of the metal part are too low or too high, the camera provided in the image detection component can collect the color of the pins of the metal part, thereby detecting the oxidation condition of the pins, and the screening slot comprises a good slot and a bad slot, metal parts with excellent performance enter the good slot after testing, and metal parts with poor performance enter the bad slot after testing.

[0017] Furthermore, the injection molding system also includes a guardrail, and the first punching device, the first material picking and placing device, the first injection molding device, the second punching device, the first testing device, the second injection molding device, the second material picking and placing device and the second testing device are all arranged in the guardrail, thereby effectively improving the safety of the operation of each device.

[0018] A second object of the present invention is to provide a control method for an automatic injection molding system, characterized in that it comprises the following steps:

[0019] S1, placing the metal part to be processed in the first punching device;

[0020] S2, the first material taking and unloading device transfers the punched metal part from the first punching device to the first injection molding device, and the first injection molding device performs injection molding on the punched metal part;

[0021] S3, the first material taking and unloading device transfers the molded metal part from the first injection molding device to the second punching device, and the second punching device punches the molded metal part to form a metal part to be inspected;

[0022] S4. The first material picking and placing device transfers the metal piece to be inspected from the second punching device to the first testing device, and the first testing device detects the quality of the metal piece to be inspected.

[0023] The beneficial effects of the present invention are: 1) The automatic injection molding system of the present invention includes a first punching device, a first material picking and unloading device, a first injection molding device, a second punching device and a first testing device. Through the control and coordination of the first punching device, the first injection molding device, the second punching device and the first testing device, the injection molding system has the functions of punching, injection molding and testing, and the metal parts are transferred from the first punching device to the first injection molding device, the second punching device and the first testing device in sequence through the first material picking and unloading device, thereby avoiding the errors caused by manual movement of metal parts and effectively saving labor costs; 2) The first punching device and the second punching device of the present invention both have excellent punching processing performance, and the first testing device can detect the quality of the metal parts, so as to intuitively and timely know the processing conditions of the metal parts and improve the processing efficiency of the metal parts. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic structural diagram of the automatic injection molding system of the present invention.

[0025] Figure 2 It is a schematic structural diagram of the first punching device of the present invention.

[0026] Figure 3 It is a schematic structural diagram of the first material taking and placing device and the first injection molding device of the present invention.

[0027] Figure 4 This is one of the structural schematic diagrams of the second punching device of the present invention.

[0028] Figure 5 This is the second structural schematic diagram of the second punching device of the present invention.

[0029] Figure 6 It is a schematic structural diagram of the first testing device of the present invention.

[0030] Figure 7 It is a schematic structural diagram of the detection module of the first testing device of the present invention.

[0031] Figure 8 It is a schematic structural diagram of the second material taking and placing device and the second injection molding device of the present invention.

[0032] Fig. 9 It is a schematic structural diagram of the second testing device of the present invention.

[0033] Fig.10 Flow chart of the control method of the present invention.

[0034] Among them: 1-first punching device; 2-first material taking and releasing device; 3-first injection molding device; 4-second punching device; 5-first testing device; 6-second material taking and releasing device; 7-second injection molding device; 8-second testing device; 11-PIN feeding assembly; 12-PIN insertion assembly; 13-punch press; 14-safety light curtain; 15-guide rail; 16-mold seat; 21-control module; 22-mechanical arm; 23-grabbing assembly; 40-slide rail; 41-first punching device mold; 42-second punching mold; 43-waste hopper; 44-photoelectric sensor; 45-buffer; 51-transmission track; 52-detection module; 53-placing table; 54-support seat; 55-rejection box; 81-transmission rack; 82-conductivity test component; 83-position detection component; 84-image detection component; 85-turntable; 86-screening slot; 521-first probe module; 522-second probe module; 523-third probe module; 524-positioning module. DETAILED DESCRIPTION

[0035] If certain words are used in the specification and claims to refer to specific components, those skilled in the art should understand that manufacturers may use different terms to refer to the same component. This specification and claims do not use differences in names as a way to distinguish components, but use differences in the functions of components as the criteria for distinction. As mentioned throughout the specification and claims, "including" is an open term and should be interpreted as "including but not limited to". "Approximately" means that within an acceptable error range, those skilled in the art can solve technical problems within a certain error range and basically achieve technical effects.

[0036] In the description of the present invention, it should be understood that the directions or positional relationships indicated by the terms "upper", "lower", "front", "rear", "left", "right", "horizontal", etc. are based on the directions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operate in a specific direction, and therefore cannot be understood as limiting the present invention.

[0037] In the invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the invention can be understood according to specific circumstances.

[0038] The following is combined with Figures 1 to 10 The present invention is further described in detail with reference to the following specific embodiments, but is not intended to limit the present invention.

[0039] Example 1

[0040] An automatic injection molding system comprises a first punching device 1, a first material picking and unloading device 2, a first injection molding device 3, a second punching device 4 and a first testing device 5, wherein the first punching device 1 is used for punching a metal part to be processed, and the first material picking and unloading device 2 is used for transferring the metal part, and the metal part passes through the first injection molding device 3, the second punching device 4 and the first testing device 5 in sequence from the first punching device 1 through the first material picking and unloading device 2, and the second punching device 4 is used for processing and cutting the part of the metal part that is not punched by the first punching device 1, and the first punching device 1, the first injection molding device 3, the second punching device 4 and the first testing device 5 surround the first material picking and unloading device 2, thereby improving the moving efficiency of the first material picking and unloading device 2, and the metal part passes through the first punching device 1, the first injection molding device 3, the second punching device 4 and the first testing device 5 in sequence during the processing, thereby completing the punching, injection molding and testing processes of the metal part, wherein the metal part can be a car door lock, and the automatic injection molding system can realize the punching, injection molding and testing of the car door lock.

[0041] Preferably, the injection molding system also includes a second material picking and placing device 6 and a second injection molding device 7. The second material picking and placing device 6 is arranged between the first testing device 5 and the second injection molding device 7. The second material picking and placing device 6 is used to transfer metal parts. The first testing device 5 is used to detect the quality of the metal parts after processing by the first punching device 1, the first injection molding device 3 and the second punching device 4. When the metal parts processed by the above devices have excellent quality, the second material picking and placing device 6 can transfer the processed metal parts from the first testing device 5 to the second injection molding device 7. The second injection molding device 7 is used to improve the mechanical properties of the metal parts.

[0042] Preferably, the injection molding system also includes a second testing device 8. The metal parts pass through the second injection molding device 7 and the second testing device 8 in sequence from the first testing device 5 through the second material picking and unloading device 6. During the processing, the metal parts pass through the first testing device 5, the second injection molding device 7 and the second testing device 8 in sequence. In addition, the second testing device 8 is used to detect the electrical conductivity, insulation performance, mechanical properties and oxidation status of the metal parts, and can screen out metal parts with good electrical conductivity stability and high mechanical strength.

[0043] Preferably, the first punching device 1 includes a PIN pin feeding assembly 11, a PIN pin insertion assembly 12 and a punch 13. The PIN pin feeding assembly 11 is connected to the PIN pin insertion assembly 12. Several PIN pins are transmitted from the PIN pin feeding assembly 11 to the PIN pin insertion assembly 12. The punch 13 and the PIN pin insertion assembly 12 are arranged in parallel. The punch 13 and the PIN pin insertion assembly 12 are respectively connected to a driver, which can be a motor or a cylinder. Under the control of the driver, the PIN pin insertion assembly 12 inserts the PIN pin into the metal part, and the punching die of the punch 13 punches the metal part. The number of the PIN pin feeding assembly 11 and the number of the PIN pin insertion assembly 12 are both two.

[0044] In addition, from Figure 2 It can be found that the first punching device 1 also includes a safety light curtain 14, a guide rail 15 and a mold base 16. The safety light curtain 14 and the PIN needle feeding assembly 11 are both arranged on the side of the guide rail 15, the punch 13 and the PIN needle insertion assembly 12 are both arranged above the guide rail 15, and the mold base 16 is arranged on the guide rail 15. Among them, the safety light curtain 14 can prevent the first punching device 1 from hurting the human body, thereby improving the safety of the system operation, and the mold base 16 is connected to a driver. When the metal part to be processed is placed on the mold base 16, the mold base 16 slides along the guide rail 15 to the PIN needle insertion assembly 12 and the punch 13 in turn, thereby realizing efficient and automatic insertion of PIN needles and punching of metal parts.

[0045] Preferably, the first material picking and unloading device 2 includes a control module 21, a robotic arm 22 and a grabbing assembly 23. The two ends of the robotic arm 22 are respectively connected to the control module 21 and the grabbing assembly 23. The robotic arm 22 and the grabbing assembly 23 are both electrically connected to the control module 21. Under the control of the control module 21, the robotic arm 22 can realize circumferential swing and up and down swing. Under the extension action of the robotic arm 22, the grabbing assembly 23 respectively abuts against the first punching device 1, the first injection molding device 3, the second punching device 4 and the first testing device 5.

[0046] Among them, the control module 21 is provided with a plurality of logic control modules, the grasping component 23 is provided with a pick-and-place fixture, and the pick-and-place fixture is connected to the logic control module, so that the control module 21 controls the pick-and-place fixture to clamp and place the metal part. The first injection molding device 3 is a vertical injection molding machine, and the first injection molding device 3 is provided with a rotary injection molding table and an injection molding module, and the injection molding module is located above the rotary injection molding table. When the grasping component 23 places the metal part on the rotary injection molding table, the rotary injection molding table rotates circumferentially so that the metal part is placed below the injection molding module. After the injection molding is completed, the rotary injection molding table returns to its original position. Figure 3 It is a structural diagram of the first material taking and placing device 2 and the first injection molding device 3.

[0047] Preferably, the second punching device 4 includes a slide rail 40, a first punching die 41, a second punching die 42 and a waste hopper 43, the first punching die 41 is arranged on the slide rail 40, the second punching die 42 is arranged above the slide rail 40, the waste hopper 43 is arranged below the second punching die 42, and in the second punching device 4, the top of the waste hopper 43 is below the top of the slide rail 40, when the first injection molding device injects the metal part, the first material picking and unloading device transfers the injected metal part from the first injection molding device to the first punching die 41 of the second punching device 4, and the metal part of the first punching die 41 slides from the front end of the slide rail 40 to the first punching die 41. Directly below the second punching die 42, the second punching die 42 presses down on the first punching die 41, so that the first punching die 41 and the second punching die 42 jointly process the part of the metal part that has not been punched by the first punching device 1, and the waste hopper 43 is located below the first punching die 41 and the second punching die 42. The punching waste directly falls into the waste hopper 43 under the action of its own gravity. In addition, after the metal part is punched by the second punching device 4, the first punching die 41 and the second punching die 42 are separated, and the metal part can be controllably slid back to the front end of the slide rail 40 under the driving action of the driver connected to the first punching die 41.

[0048] and, Figure 4 is a rear view of the second punching device 4, Figure 5 It is a front view of the second punching device 4. The top of the second punching die 42 is connected to a driving cylinder, and the punching process of the metal part can be completed in a controllable manner under the control of the driving cylinder. A photoelectric sensor 44 is arranged on the side of the slide rail 40. The photoelectric sensor 44 is used to detect the positions of the first punching die 41 and the second punching die 42. A buffer 45 is arranged at the end of the slide rail 40. The buffer 45 is used to prevent the first punching die 41 from sliding out of the slide rail 40.

[0049] Preferably, the first testing device 5 includes a conveying track 51, a detection module 52, a placement table 53 and a supporting seat 54. The detection module 52 is arranged around the conveying track 51, the placement table 53 is arranged at the discharge port of the conveying track 51, the conveying track 51, the detection module 52 and the placement table 53 are all arranged on the supporting seat 54, and a rejection box 55 is arranged on the side of the supporting seat 54, and the rejection box 55 is used to place defective metal parts.

[0050] in, Figure 6 The placement table 53 constitutes an emergency buffer zone of the automatic injection molding system. Figure 7 is a schematic diagram of the structure of the detection module 52, Figure 8 It is a structural diagram of the second material picking and unloading device 6 and the second injection molding device 7. The second material picking and unloading device 6 is provided with the same control module, mechanical arm and grasping assembly as the first material picking and unloading device 2. The grasping assembly of the second material picking and unloading device 6 abuts against the first test device 5, the second injection molding device 7 and the second test device 8 respectively under the extension action of the mechanical arm. The second injection molding device 7 is provided with the same rotary injection molding table and injection molding module as the first injection molding device 3. When there is a fault in the second injection molding device 7 or the second test device 8, the second material picking and unloading device 6 can automatically switch the operation mode and transfer the metal parts with excellent performance tested by the second test device 8 to the placement table 53, thereby ensuring the safety of good products.

[0051] Depend on Figure 7 It can be seen that the detection module 52 includes a first probe module 521, a second probe module 522, a third probe module 523 and a positioning module 524. The first probe module 521 corresponds to the positioning module 524, the second probe module 522 is arranged on the side of the positioning module 524, the third probe module 523 is arranged on the bottom of the positioning module 524, and the third probe module 523 is connected to a driver. During the detection process, the positioning module 524 and the first probe module 521 jointly clamp the metal part to be detected, and the first probe module 521, the second probe module 522 and the third probe module 523 jointly abut the metal part, and comprehensively and effectively detect the pin stability of the metal part and whether there is a pin missing on the metal part.

[0052] Preferably, the second testing device 8 comprises a conveying frame 81, a conduction testing component 82, a position detection component 83, an image detection component 84, a turntable 85 and a screening slot 86. The conveying frame 81, the conduction testing component 82, the position detection component 83 and the image detection component 84 are distributed circumferentially. The conveying frame 81, the conduction testing component 82, the position detection component 83 and the image detection component 84 are all arranged on the outside of the turntable 85. The screening slot 86 is arranged on the side of the conveying frame 81. When the second material picking and unloading device 6 transfers the metal parts from the second injection molding device 7 to the conveying frame 81 of the second testing device 8, the metal parts on the conveying frame 81 are driven by the turntable 85 and pass through the conduction testing component 82, the position detection component 83 and the image detection component 84 in sequence. The detection component 83 and the image detection component 84, and the conduction test component 82 can be provided with a voltage detection chip or a current detection chip to detect whether multiple pins in the metal part are not conductive or short-circuited. The position detection component 83 can be provided with a detection probe and a displacement sensor to detect whether the pins of the metal part are too low or too high. The image detection component 84 is provided with a camera that can collect the color of the pins of the metal part, so as to detect the oxidation condition of the pins. The screening slot 86 includes a good slot and a bad slot. Metal parts with excellent performance enter the good slot after testing, and metal parts with poor performance enter the bad slot after testing. Metal parts with excellent performance can flow from the good slot to the good placement area.

[0053] Example 2

[0054] A control method for an automatic injection molding system comprises the following steps:

[0055] S1, placing a metal piece to be processed on a first punching device 1, and punching the metal piece by the first punching device 1;

[0056] S2, the first material taking and unloading device 2 transfers the punched metal part from the first punching device 1 to the first injection molding device 3, and the first injection molding device 3 performs injection molding on the punched metal part;

[0057] S3, the first material taking and unloading device 2 transfers the molded metal part from the first injection molding device 3 to the second punching device 4, and the second punching device 4 punches the molded metal part to form a metal part to be inspected;

[0058] S4, the first loading and unloading device 2 transfers the metal piece to be inspected from the second punching device 4 to the first testing device 5, and the first testing device 5 detects the quality of the metal piece to be inspected.

[0059] Obviously, the injection molding system of the present invention has excellent operating performance, rich functions, high degree of automation, high production efficiency, and effectively saves labor costs.

[0060] According to the disclosure and teaching of the above description, those skilled in the art to which the present invention belongs can also change and modify the above embodiment. Therefore, the present invention is not limited to the above specific embodiment, and any obvious improvement, replacement or modification made by those skilled in the art on the basis of the present invention belongs to the protection scope of the present invention. In addition, although some specific terms are used in this specification, these terms are only for the convenience of description and do not constitute any limitation to the present invention.

Claims

1. An automatic injection molding system, characterized in that: The invention comprises a first punching device (1), a first material taking and placing device (2), a first injection molding device (3), a second punching device (4) and a first testing device (5), wherein the first punching device (1) is used for punching a metal part to be processed, the first material taking and placing device (2) is used for transferring the metal part, and the metal part passes through the first injection molding device (3), the second punching device (4) and the first testing device (5) from the first punching device (1) in sequence through the first material taking and placing device (2); The first punching device (1) comprises a PIN feeding assembly (11), a PIN insertion assembly (12), a punch (13) and a guide rail (15); the PIN feeding assembly (11) is connected to the PIN insertion assembly (12); the punch (13) and the PIN insertion assembly (12) are arranged in parallel; the PIN feeding assembly (11) is arranged on the side of the guide rail (15); and the punch (13) and the PIN insertion assembly (12) are both arranged above the guide rail (15); The first testing device (5) comprises a conveying track (51), a detection module (52), a placement table (53) and a supporting seat (54); the detection module (52) is arranged around the conveying track (51); the placement table (53) is arranged at the discharge port of the conveying track (51); the conveying track (51), the detection module (52) and the placement table (53) are all arranged on the supporting seat (54); and a rejection box (55) is arranged on the side of the supporting seat (54); The detection module (52) includes a first probe module (521), a second probe module (522), a third probe module (523) and a positioning module (524), wherein the first probe module (521) corresponds to the positioning module (524), the second probe module (522) is arranged on the side of the positioning module (524), the third probe module (523) is arranged at the bottom of the positioning module (524), and the third probe module (523) is connected to a driver.

2. The automatic injection molding system according to claim 1, characterized in that: The injection molding system further comprises a second material taking and placing device (6) and a second injection molding device (7), wherein the second material taking and placing device (6) is arranged between the first testing device (5) and the second injection molding device (7), and the second material taking and placing device (6) is used for transferring the metal part.

3. The automatic injection molding system according to claim 2, characterized in that: The injection molding system further comprises a second testing device (8), and the metal part passes through the second material taking and placing device (6) from the first testing device (5) and sequentially through the second injection molding device (7) and the second testing device (8).

4. The automatic injection molding system according to claim 1, characterized in that: The first material taking and placing device (2) comprises a control module (21), a mechanical arm (22) and a grasping assembly (23), wherein two ends of the mechanical arm (22) are respectively connected to the control module (21) and the grasping assembly (23), and the mechanical arm (22) and the grasping assembly (23) are both electrically connected to the control module (21).

5. The automatic injection molding system according to claim 1, characterized in that: The second punching device (4) comprises a slide rail (40), a first punching die (41), a second punching die (42) and a waste hopper (43); the first punching die (41) is arranged on the slide rail (40), the second punching die (42) is arranged above the slide rail (40), and the waste hopper (43) is arranged below the second punching die (42).

6. The automatic injection molding system according to claim 3, characterized in that: The second testing device (8) comprises a conveying frame (81), a conduction testing component (82), a position detection component (83), an image detection component (84), a turntable (85) and a screening slot (86); the conveying frame (81), the conduction testing component (82), the position detection component (83) and the image detection component (84) are all arranged on the outside of the turntable (85), and the screening slot (86) is arranged on the side of the conveying frame (81).

7. A control method for an automatic injection molding system, applied to the automatic injection molding system according to any one of claims 1 to 6, characterized in that: The following steps are involved: S1, placing a metal part to be processed in a first punching device (1); S2, the first material taking and unloading device (2) transfers the metal part that has been punched from the first punching device (1) to the first injection molding device (3), and the first injection molding device (3) injects the metal part that has been punched; S3, the first material taking and unloading device (2) transfers the molded metal part from the first injection molding device (3) to the second punching device (4), and the second punching device (4) punches the molded metal part to form a metal part to be inspected; S4. The first material taking and placing device (2) transfers the metal piece to be inspected from the second punching device (4) to the first testing device (5), and the first testing device (5) detects the quality of the metal piece to be inspected.

Images