Secondary injection molding system

Abstract

The present invention discloses a secondary injection molding system, wherein the secondary injection molding system includes an injection molding machine and a three-axis manipulator installed on the injection molding machine, a loading mechanism, a discharge mechanism, a material transfer mechanism, a punching mechanism, and a discharge mechanism. The material transfer mechanism is used to place the individual semi-finished workpieces sorted by the positioning mechanism one by one in a preset material collection area; the punching mechanism is used to punch and separate the secondary injection molded workpieces after the secondary injection molding process into injection molded finished products and sprue waste. The discharge mechanism is a waste channel and a finished product channel provided on a frame and connected to the outside world. The three-axis manipulator can suck the semi-finished workpiece from the material collection area to the injection molding machine for secondary injection molding and / or remove the secondary injection molded workpiece from the injection molding machine, and move it to the punching and discharge device for punching and separation, and finally put the injection molded finished product into the finished product channel and the sprue waste into the waste channel. The technical solution of the present invention realizes a complete automated process flow, improves production efficiency, and reduces production costs.

Description

Technical Field

[0001] The present invention relates to the technical field of secondary injection molding, and in particular to a secondary injection molding system. Background Art

[0002] In the secondary injection molding process, the complete process includes: loading, discharging, swinging, feeding, picking, cutting, finished products and nozzle classification. At present, the above process is basically completed by manual operation or multiple machines in sections. There are problems such as low automation integration, high machine cost and high labor cost. By integrating the above engineering processes, the problem can be solved to achieve a complete automated process, improve production efficiency and reduce production costs. Summary of the Invention

[0003] The main purpose of the present invention is to provide a secondary injection molding system, which integrates the above engineering processes to achieve an automated complete process flow, improve production efficiency and reduce production costs.

[0004] To achieve the above objectives, the present invention provides a secondary injection molding system comprising:

[0005] A secondary injection molding device, comprising an injection molding machine and a three-axis manipulator mounted on the injection molding machine;

[0006] a loading and sorting system, arranged adjacent to the injection molding machine, comprising a frame, a loading mechanism, a discharge mechanism, a positioning mechanism, and a transfer mechanism respectively located on the frame, wherein the loading mechanism is used to transport a large number of semi-finished workpieces to be sorted to the discharge mechanism, the discharge mechanism discharges a large number of semi-finished workpieces into orderly individual semi-finished workpieces, the positioning mechanism is used to sort the individual semi-finished workpieces at a fixed angle, and the transfer mechanism is used to place the individual semi-finished workpieces sorted by the positioning mechanism one by one in a preset material collection area; and

[0007] The punching and discharging device includes a punching mechanism and a discharging mechanism arranged on the frame. The punching mechanism is used to punch and separate the secondary injection molded workpiece after the secondary injection molding process into injection finished products and sprue waste. The discharging mechanism is a waste channel and a finished product channel arranged on the frame and connected to the outside world. The three-axis manipulator can suck the semi-finished workpiece from the material taking area to the injection molding machine for secondary injection molding and / or take the secondary injection molded workpiece out of the injection molding machine, and move it to the punching and discharging device for punching and separation, and finally put the injection molded product into the finished product channel, and put the sprue waste into the waste channel.

[0008] Optionally, the secondary injection molding system further includes a crusher, the inlet of the crusher corresponds to the outlet of the waste channel, and the crusher is used to crush the nozzle waste.

[0009] Optionally, the three-axis manipulator includes a three-axis guide rail assembly and a material-picking manipulator connected to the three-axis guide rail assembly. The material-picking manipulator includes a manipulator gripper connected to the three-axis guide rail assembly, a rotating cylinder movably connected to the manipulator gripper, and a material-picking assembly connected to the rotating cylinder. The rotating cylinder can swing relative to the manipulator gripper, and the material-picking assembly can rotate circumferentially relative to the rotating cylinder. The material-picking assembly includes a first suction assembly and a second suction assembly. The first suction assembly is used to suck / place semi-finished workpieces, and the second suction assembly is used to suck / place secondary injection molded workpieces.

[0010] Optionally, the material picking assembly also includes a connecting piece connected to the rotating cylinder, the first suction assembly includes a first mounting plate, and a first suction cup provided on the first mounting plate, the second suction assembly includes a second mounting plate, a second suction cup provided on the second mounting plate and a sprue clamp provided on the second mounting plate, the first mounting plate and the second mounting plate are both fixed to the connecting piece, and the first mounting plate and the second mounting plate are arranged opposite to each other with an installation space separated therebetween, and a fixing piece is provided in the installation space to connect and support the first mounting plate and the second mounting plate.

[0011] Optionally, the punching mechanism includes a discharge table movably connected to the frame and a punching assembly connected to the frame, the discharge table has a discharge position outside the punching assembly and a punching position below the punching assembly, the punching assembly includes a punching frame, a clamping device and a punching device provided on the punching frame, the clamping device is used to clamp the injection molded product, and the punching device is used to cut and separate the secondary injection molded workpiece on the discharge table into the injection molded product and the sprue waste.

[0012] Optionally, the punching device includes a punching cylinder mounted on the punching frame and a punching knife drivingly connected to the punching cylinder, wherein the punching knife cuts the secondary injection molded workpiece under the drive of the punching cylinder;

[0013] The pressing device includes a pressing cylinder, a pressing mounting plate transmission-connected to the pressing cylinder, and a pressing soft block mounted on the pressing mounting plate. The pressing mounting plate presses the injection molded product on the discharge table under the drive of the pressing cylinder.

[0014] Optionally, the loading and sorting system further comprises a positioning jig provided in the material picking area, the positioning jig comprising a jig rack and mounting parts sequentially arranged on the jig rack, and the material transfer mechanism places individual semi-finished workpieces on one of the mounting parts one by one.

[0015] Optionally, the feeding mechanism includes a feeding rack extending along the height direction of the frame, a feeding hopper located on one side of the feeding rack and slidably connected to the feeding rack, a feeding drive mechanism driving the feeding hopper to move, and a discharge hopper located on the other side of the feeding rack, the feeding rack is installed on the frame, and a material level port is provided on the feeding rack, and the material level port is located above the discharge mechanism, and the discharge hopper corresponds to the material level port, wherein the feeding hopper is used to place a material pile, and the feeding drive mechanism can drive the feeding hopper to move to the material level port, and the material pile falls from the discharge hopper into the discharge mechanism through the material level port.

[0016] Optionally, the positioning mechanism includes a moving component that can move relative to the frame, a jacking and loading component installed on the moving component, and a rotating positioning component located above the jacking and loading component. The jacking and loading component is located at the discharge position of the discharge mechanism. The jacking and loading component and the rotating positioning component are used to place a single material at a fixed angle. The moving component moves relative to the frame and has a discharge position located below the rotating positioning component and a material picking position for the material transfer mechanism to transfer materials.

[0017] Optionally, the moving assembly includes a driving cylinder and a moving platform connected to a driving shaft of the driving cylinder, and both ends of the moving platform are movably mounted on two movable rods;

[0018] The rotary positioning assembly includes a rotary mounting frame and a clamping mechanism provided on the mounting frame. The lifting and loading assembly is located in the rotary mounting frame and below the clamping mechanism. The clamping mechanism includes a motor and a clamping mechanism connected to the motor.

[0019] The lifting and loading assembly includes a lifting cylinder connected to the moving platform and a material installation assembly connected to the driving shaft of the lifting cylinder;

[0020] The material installation assembly includes a mounting part, a material placement table, and a buffer mechanism located between the mounting part and the material placement table. The mounting part has a guide opening. The buffer mechanism includes a guide rod connected to the material placement table and a buffer spring located on the guide rod. The guide rod is placed in the guide opening. The lifting cylinder drives the mounting part to move, and the mounting part drives the buffer spring to drive the material placement table. When subjected to force, the material placement table moves toward the mounting part through two guide rods.

[0021] Optionally, the discharge mechanism is a vibrating plate, and the lifting and loading assembly is flush with the discharge height of the discharge opening of the vibrating plate.

[0022] Optionally, the material transfer mechanism includes a material transfer slide rail installed on the frame, and a material transfer robot slidably installed on the material transfer slide rail, and the material transfer robot can move between the material discharge position and the material retrieval position.

[0023] The technical solution of the present invention adopts secondary injection molding equipment, including an injection molding machine and a three-axis manipulator installed on the injection molding machine; the loading and sorting system is arranged adjacent to the injection molding machine, and the loading and sorting system includes a frame, a loading mechanism, a discharge mechanism, a positioning mechanism and a moving mechanism respectively located on the frame. The loading mechanism is used to transport a large number of semi-finished workpieces to be sorted to the discharge mechanism, and the discharge mechanism discharges a large number of semi-finished workpieces into orderly single semi-finished workpieces. The positioning mechanism is used to sort single semi-finished workpieces at a fixed angle, and the moving mechanism is used to arrange the single semi-finished workpieces sorted by the positioning mechanism one by one in a preset material picking area. Compared with the traditional method of manually confirming the placement angle of the semi-finished workpieces and then placing them in the material tray, work efficiency is improved and labor costs are reduced. The punching and discharging device includes a punching mechanism and a discharging mechanism provided on the frame. The punching mechanism is used to punch and separate the secondary injection molded workpiece after secondary injection molding into finished injection molded products and sprue waste. The discharging mechanism is a waste channel and a finished product channel provided on the frame and connected to the outside world. The three-axis manipulator can suck the semi-finished workpiece from the material taking area to the injection molding machine for secondary injection molding and / or remove the secondary injection molded workpiece from the injection molding machine, and move it to the punching and discharging device for punching and separation, and finally put the injection molded product into the finished product channel, and put the sprue waste into the waste channel. Compared with the traditional method of manually picking up the secondary injection molded workpiece for punching and separation, manually handling the injection molded product and sprue waste improves work efficiency. This is solved by integrating the above-mentioned engineering processes together to achieve an automated complete process flow, improve production efficiency, and reduce production costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying any creative work.

[0025] Figure 1 Schematic diagram of the overall structure of an embodiment of a secondary injection molding system of the present invention;

[0026] Figure 2 for Figure 1 Schematic diagram of the structure of the reclaiming manipulator in FIG;

[0027] Figure 3 for Figure 1 Schematic diagram of the structure of the mid-loading sorting system after removing some frames;

[0028] Figure 4 for Figure 3 A schematic diagram of a partially enlarged structure showing the positioning mechanism after the punching mechanism is removed;

[0029] Figure 5 for Figure 4 Structural diagram of the positioning mechanism;

[0030] Figure 6 for Figure 4 Schematic diagram of the structure of the positioning fixture;

[0031] Figure 7 for Figure 3 Schematic diagram of the structure of the punching mechanism.

[0032] Description of Figure Numbers:

[0033]

[0034]

[0035] The purpose, features and advantages of the present invention will be further described with reference to the accompanying drawings and in conjunction with the embodiments. DETAILED DESCRIPTION

[0036] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0037] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative position relationship, movement status, etc. between the various components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0038] In addition, the descriptions of "first", "second", etc. in the present invention are for descriptive purposes only and should not be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" or "second" may explicitly or implicitly include at least one of such features. In addition, the technical solutions between the various embodiments can be combined with each other, but this must be based on the fact that they can be implemented by ordinary technicians in this field. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0039] At present, in the secondary injection molding process, the complete process flow includes: loading, discharging, swinging, feeding, picking, cutting, and classification of finished products and nozzles. Currently, the above process is basically completed manually or requires multiple machines to be completed in sections, which has the problems of low automation integration, high machine cost and high labor cost.

[0040] To this end, the present invention proposes a secondary injection molding system that integrates the above-mentioned engineering processes to solve at least one of the above-mentioned problems, realizes an automated complete process, improves production efficiency, and reduces production costs.

[0041] Reference Figure 1 In an embodiment of the present invention, the secondary injection molding system 1000 includes a secondary injection molding device, a loading and sorting system 300, and a punching and discharging device. The secondary injection molding device includes an injection molding machine 100 and a three-axis robot 200 installed on the injection molding machine 100.

[0042] The traditional method of loading secondary injection molding is manual loading, which has low work efficiency. Therefore, a method of loading with a robot has emerged. This method requires the robot to pick up the material at a predetermined position for loading. However, after the injection molding is completed, the secondary injection molded workpiece still needs to be picked up manually. If automatic material picking is required, a robot must be set up separately, which not only takes up space on the site but also increases the cost of the equipment. In addition, it is not suitable for scenarios where the placement angle of the semi-finished workpiece 10 needs to be confirmed and then aligned and placed in the mold. It can only be completed through manual operation, with limited applicable scenarios and low work efficiency.

[0043] Reference Figures 2 to 7In order to solve the problem that the placement angle of the semi-finished workpieces 10 needs to be confirmed and manually completed, resulting in low production efficiency, this embodiment solves the problem by setting up a loading and sorting system 300. Specifically, the loading and sorting system 300 is arranged adjacent to the injection molding machine 100. The loading and sorting system 300 includes a frame 310, a loading mechanism 400, a discharge mechanism 600, a positioning mechanism 500 and a moving mechanism 700 respectively located on the frame 310. The loading mechanism 400 is used to transport a large number of semi-finished workpieces 10 to be sorted to the discharge mechanism 600. The discharge mechanism 600 discharges a large number of semi-finished workpieces 10 into orderly single semi-finished workpieces 10. The positioning mechanism 500 is used to sort the single semi-finished workpieces 10 at a fixed angle. The moving mechanism 700 is used to arrange the single semi-finished workpieces 10 sorted by the positioning mechanism 500 one by one in a preset material picking area.

[0044] During work, workers introduce a large number of semi-finished workpieces 10 to be sorted into the loading mechanism 400, and send a large number of semi-finished workpieces 10 to be sorted to the discharging mechanism 600 through the loading mechanism 400. The discharging mechanism 600 arranges a large number of semi-finished workpieces 10 into orderly single semi-finished workpieces 10. The discharging mechanism 600 can be a commonly used discharging mechanism 600 in the injection molding industry, such as conveyor belt discharging, roller discharging, vibration plate discharging, etc. Compared with the traditional method of manually transporting the semi-finished workpieces 10 to the discharging mechanism 600 for discharging, the efficiency is greatly improved, and the labor cost and work intensity are reduced; the discharging mechanism 600 transports the sorted single semi-finished workpiece 10 to the positioning mechanism 500, and the positioning mechanism 500 is used to sort the single semi-finished workpiece 10 at a fixed angle. In layman's terms, the positioning mechanism 500 A semi-finished workpiece 10 is placed at a specific angle. Taking the toy wheel core of this embodiment as an example, the wheel core needs to be placed at an angle to avoid processing failure during the secondary injection molding process. After the positioning mechanism 500 places a semi-finished workpiece 10 transported from the discharge mechanism 600 to a predetermined angle, the material transfer mechanism 700 uses suction or clamping to move the semi-finished workpiece 10 from the positioning mechanism 500 to a preset material collection area. The positioning mechanism 500 and the material transfer mechanism 700 repeat this process until the material transfer mechanism 700 fills the material collection area with angled semi-finished workpieces 10, which are then picked up by the three-axis manipulator 200 for secondary injection molding. Compared with the traditional method of manually confirming the placement angle of the semi-finished workpiece 10 and then placing it in the material tray, work efficiency is improved and labor costs are reduced.

[0045] It should be noted that the loading and sorting system 300 can be used independently to handle the large number of workpieces to be injected. For example, it can address the problem that the traditional method of placing the workpieces on the receiving tray requires manual operation, or the high cost of using a robot to place the workpieces on the receiving tray. In other words, in some scenarios, the loading and sorting system 300 can be used to sort and arrange semi-finished workpieces 10, or it can be used in conjunction with the injection molding machine 100 to improve production efficiency.

[0046] Reference Figures 2 to 7 , the subsequent process of punching and separating the secondary injection molded workpiece into the injection molded finished product 20 and the sprue waste 30 needs to be done manually, which has low production efficiency; this problem is solved by a punching and discharging device in this embodiment, the punching and discharging device includes a punching mechanism 800 and a discharging mechanism 900 provided on the frame 310, the punching mechanism 800 is used to punch and separate the secondary injection molded workpiece after the secondary injection molding process into the injection molded finished product 20 and the sprue waste 30, the discharging mechanism 900 is a waste channel 920 and a finished product channel 910 provided on the frame 310 and connected to the outside world, the three-axis manipulator 200 can suck the semi-finished workpiece 10 from the material taking area to the injection molding machine 100 for secondary injection molding and / or take the secondary injection molded workpiece out of the injection molding machine 100, and move it to the punching and discharging device for punching and separation, and finally put the injection molded finished product 20 into the finished product channel 910, and put the sprue waste 30 into the waste channel 920.

[0047] During operation, the three-axis robot 200 removes the secondary molded workpiece and moves it to the punching mechanism 800. The punching mechanism 800 punches and separates the secondary molded workpiece into a finished product 20 and sprue waste 30. The three-axis robot 200 then extracts the finished product 20 and sprue waste 30 and finally places the finished product 20 into the finished product channel 910 and the sprue waste 30 into the waste channel 920. Compared to the traditional manual removal and punching of secondary molded workpieces, manual handling of the finished product 20 and sprue waste 30 improves work efficiency and production efficiency. There is no need for manual labor to reduce the maximum capacity of the injection molding machine 100 due to fatigue, distraction at night, restroom use, or rest breaks. Fatigue and operational errors can even lead to work-related accidents. Furthermore, the operator's erratic removal time, sometimes too fast and sometimes too slow, can cause product shrinkage and deformation. If the operator is away for too long, the material tube may burn, requiring re-molding and wasting raw materials.

[0048] Reference Figure 1 or Figure 3Furthermore, to achieve a fully automated process, the secondary injection molding system 1000 also includes a crusher 50. The crusher's inlet corresponds to the outlet of the waste channel 920, and the crusher 50 is used to crush the nozzle waste 30. This allows the nozzle waste 30 to enter the crusher 50 directly through the outlet of the waste channel 920 for crushing, further improving production efficiency and reducing production costs. The integrated arrangement of the loading and sorting system 300 and the punching and discharging device saves equipment space and facilitates miniaturization.

[0049] The following describes the three-axis robot 200, the loading and sorting system 300, and the punching and discharging device installed on the injection molding machine 100.

[0050] Reference Figure 1 and Figure 2 , about the specific structure of the three-axis manipulator 200 and the functions it can achieve.

[0051] After the secondary injection molding is completed, the secondary injection molded workpiece needs to be taken out. This process is generally completed manually or by a robot. However, the robot can only complete the loading of the secondary injection molding process or the removal of the secondary injection molding process. If you want to achieve automation, you can only set up two robots, that is, one to complete the loading of the secondary injection molding process and the other to complete the removal of the secondary injection molding process, which leads to high equipment costs. In this embodiment, the three-axis robot 200 includes a three-axis guide rail assembly 210 and a material removal robot 220 connected to the three-axis guide rail assembly 210. The material removal robot 220 It includes a robotic gripper 230 connected to the three-axis guide rail assembly 210, a rotating cylinder 240 movably connected to the robotic gripper 230, and a material picking assembly 250 connected to the rotating cylinder 240. The rotating cylinder 240 can swing relative to the robotic gripper 230, and the material picking assembly 250 can rotate circumferentially relative to the rotating cylinder 240. The material picking assembly 250 includes a first suction assembly 260 and a second suction assembly 270. The first suction assembly 260 is used to suck / place the semi-finished workpiece 10, and the second suction assembly 270 is used to suck / place the secondary injection molded workpiece.

[0052] The material picking robot 220 can move in the X, Y and Z directions on the three-axis guide rail assembly 210. The material picking assembly 250 is connected to the robot grip 230 through the rotating cylinder 240. By setting two first suction assemblies 260 and second suction assemblies 270 with different functions, the second suction assembly 270 is used to suck / place the secondary injection molded workpiece, so that the three-axis robot 200 can suck the placed semi-finished workpiece 10 from the material picking area and place it into the injection molding machine 100 for secondary injection molding. When picking up the material, the second suction assembly 270 is used to take out the secondary injection molded workpiece that has been processed by the secondary injection molding and place it on the punching and discharging device to punch and separate the secondary injection molded workpiece that has been processed by the secondary injection molding into injection molded finished products 20 and sprue waste 30. Compared with setting two robots to complete the loading of the secondary injection molding process and the picking of the secondary injection molded workpiece, the equipment cost is reduced and the processing efficiency is improved. And because of the setting of the punching and discharging device, there is no idle problem caused by setting up two robots, that is, when one robot takes the material for processing, the other robot is completely inactive. Although the other robot can take out the secondary injection molded workpiece after the processing is completed, thus eliminating the need for manual labor, it is cumbersome in comparison. This is why in the traditional way, either the loading of the secondary injection molding process is completed manually, and the robot completes the taking of the secondary injection molded workpiece. By arranging the first suction component 260 and the second suction component 270 together and integrating a punching and discharging device, when working, the second suction component 270 sucks the secondary injection molded workpiece from the injection molding machine 100, places the secondary injection molded workpiece on the punching and discharging device, and punches and separates it into an injection molded finished product 20 and a sprue waste 30, and then puts the injection molded finished product 20 into the finished product channel 910, and the sprue waste 30 into the waste channel 920, and then, the first suction component 260 sucks the semi-finished workpiece 10 from the material picking area and places it into the injection molding machine 100 for secondary injection molding processing. On the one hand, the production efficiency is improved and the cost of equipment is reduced. On the other hand, there is no problem of idle robots. By integrating the above engineering processes together, a complete process flow of automated injection molding is realized.

[0053] In another embodiment, the three-axis manipulator 200 can be installed on the injection molding machine 100 and used to complete the loading of the secondary injection molding process and remove the secondary injection molded workpiece. Due to the setting of the punching and discharging device, there is no problem of idle manipulators.

[0054] In other embodiments, the loading and sorting system 300 can be loaded manually. Due to the provision of the punching and discharging device, there is no problem of idle robots.

[0055] Reference Figure 2Specifically, in order to ensure the stable material picking of the material picking assembly 250 and optimize the structure of the material picking assembly 250, the material picking assembly 250 also includes a connecting piece connected to the rotating cylinder 240, the first suction assembly 260 includes a first mounting plate, and a first suction cup 261 provided on the first mounting plate, the second suction assembly 270 includes a second mounting plate, a second suction cup 271 provided on the second mounting plate and a sprue clamp 272 provided on the second mounting plate, the first mounting plate and the second mounting plate are both fixed to the connecting piece, and the first mounting plate and the second mounting plate are arranged opposite to each other with an installation space separated therebetween, and a fixing piece is provided in the installation space to connect and support the first mounting plate and the second mounting plate.

[0056] The connecting piece connected to the rotating cylinder 240 is square, and two rectangular first mounting plates and second mounting plates are vertically connected on opposite sides of the connecting piece. The first mounting plate and the second mounting plate are parallel and perpendicular to the connecting piece. The size of the first mounting plate and the second mounting plate is determined according to the material arrangement at the material picking position, thereby ensuring that the number of the first suction cup 261 of the first mounting plate and the second suction cup 271 of the second mounting plate can correspond to the material.

[0057] In this embodiment, the first mounting plate is provided with six first suction cups 261 arranged in two rows and the second mounting plate is provided with six second suction cups 271 arranged in two rows. In order to ensure that the second suction component 270 can remove the secondary injection molded workpiece after the secondary injection molding process from the mold of the injection molding machine 100, a sprue clamp 272 is also provided on the second mounting plate. The sprue clamp 272 is used to clamp the sprue, which is the sprue waste 30 after separation. The sprue waste 30 is in the shape of a branch trunk. In this way, the second suction component 270 has sufficient clamping force, and it is also convenient for the second suction component 270 to subsequently put the injection molded product 20 into the finished product channel 910 and the sprue waste 30 into the waste channel 920.

[0058] In order to ensure the stability of the first mounting plate and the second mounting plate and prevent them from shaking during operation, a fixing piece is provided in the installation space between the first mounting plate and the second mounting plate to connect and support the first mounting plate and the second mounting plate. In order to save costs, the fixing piece is a square tube, and one is provided at each of the four corners of the first mounting plate and the second mounting plate to ensure a firm structure.

[0059] Reference Figure 2Furthermore, in order to optimize the structure of the material-taking component 250, reduce costs and ensure a compact structure, the first suction component 260 and the second suction component 270 are both air-driven, and an air pipe adapter block 290 is provided in the installation space. The movement of the first suction component 260 and the second suction component 270 is controlled by the air pipe adapter block 290. The air pipe adapter block 290 is arranged on the first mounting plate in the middle position of the installation space, thereby balancing the weight of the water nozzle fixture 272 arranged on the second mounting plate to ensure overall stability. The first suction component 260 and the second suction component 270 are both connected to the air pipe adapter block 290, thereby optimizing the structure of the material-taking component 250 and ensuring a compact structure without the need for external pipe layout.

[0060] Reference Figure 2 Furthermore, a nozzle device 280 for spraying a release agent is respectively provided on the first mounting plate and the second mounting plate, which is sprayed on the male mold and the female mold when the first suction component 260 places the semi-finished workpiece 10 into the mold of the injection molding machine 100. Compared with a robot that can only be provided with one nozzle device 280, it is more convenient to remove the secondary injection molded workpiece from the mold of the injection molding machine 100.

[0061] Reference Figures 3 to 6 , about the specific structure of the upper sorting system and the functions it can achieve.

[0062] Reference Figure 3 The loading and sorting system 300 includes a frame 310, a loading mechanism 400, a discharge mechanism 600, a positioning mechanism 500, and a transfer mechanism 700. In the existing secondary injection molding process, the semi-finished workpieces 10 need to be manually discharged and the placement angle of the semi-finished workpieces 10 adjusted during the loading process, which results in high labor intensity, low work efficiency, and high labor costs. The loading mechanism 400 and the discharge mechanism 600 can sort a large number of semi-finished workpieces 10 at one time, thereby improving efficiency. The positioning mechanism 500 can be used to position the angle of the semi-finished workpieces 10 after discharge, and the transfer robot 720 can be used to load the semi-finished workpieces 10 onto the positioning fixture 730 to solve this problem.

[0063] Reference Figure 3Specifically, the feeding mechanism 400 is mounted on the frame 310; the discharging mechanism 600 is mounted on the frame 310 and is located below the discharge port 411 of the feeding mechanism 400; the positioning mechanism 500 is mounted on the frame 310, and the positioning mechanism 500 includes a moving component 510 that can move relative to the frame 310, a lifting and loading component 520 mounted on the moving component 510, and a rotating positioning component 550 located above the lifting and loading component 520, the lifting and loading component 520 is located at the discharge port 411 of the discharging mechanism 600; the material moving mechanism 700 is mounted on the frame 310, wherein the moving component 510 moves relative to the frame 310 and has The discharge position below the rotating positioning component 550 and the material picking position for the material moving mechanism 700 to move materials, the loading mechanism 400 is used to transport the material pile to be sorted to the discharge mechanism 600, the discharge mechanism 600 arranges the material pile into ordered single materials, and feeds the sorted single materials to the jacking and loading component 520 in turn, the rotating positioning component 550 clamps and rotates the single material, the jacking and loading component 520 lifts and holds the single material, the moving component 510 drives the jacking and loading component 520 to the material picking position, the material moving mechanism 700 takes out the single material from the jacking and loading component 520, and discharges the single materials one by one in the material picking area.

[0064] The loading and sorting system 300 can be used independently to handle the large number of workpieces to be injected. For example, it can address the traditional manual placement of workpiece trays onto the reel, or the high cost of using a robot to place workpiece trays onto the reel. In other words, in some scenarios, the loading and sorting system 300 can be used to sort and arrange semi-finished workpieces 10, or it can be used in conjunction with the injection molding machine 100 to improve production efficiency.

[0065] In one embodiment, the loading mechanism 400 can be loading by a robot arm, loading on a conveyor table, loading on a transmission belt, etc.

[0066] Reference Figure 3In this embodiment, in order to facilitate the miniaturization of the equipment and reduce the cost of the equipment, the loading mechanism 400 includes a loading rack 410 extending along the height direction of the frame 310, a loading hopper 420 located on one side of the loading rack 410 and slidably connected to the loading rack 410, a loading drive mechanism 430 that drives the loading hopper 420 to move, and a discharge hopper 440 located on the other side of the loading rack 410. The loading rack 410 is installed on the frame 310, and a material level port 411 is provided on the loading rack 410. The material level port 411 is located above the discharge mechanism 600, and the discharge hopper 440 corresponds to the material level port 411, wherein the loading hopper 420 is used to place a material pile, and the loading drive mechanism 430 can drive the loading hopper 420 to move to the material level port 411, and the material pile falls from the discharge hopper 440 into the discharge mechanism 600 through the material level port 411.

[0067] The material of the loading rack 410 is metal or non-metal with certain strength. The loading rack 410 is like a door panel as a whole, and a material level opening 411 is opened at the middle position at the top. In order to avoid material accumulation and ensure smooth discharge, the bottom of the discharge hopper 440 is inclined toward the material level opening 411, and the discharge hopper 440 is slidably connected to the edges on both sides of the loading rack 410 through the slider guide assembly. The loading drive mechanism 430 is a lifting motor, which drives the slider guide assembly through the synchronous belt assembly so that the discharge hopper 440 can move along the height direction of the loading rack 410 to the material level opening 411, so that the material in the discharge hopper 440 enters the material level opening 411 from the inclined bottom under the action of weight. The discharge channel of the discharge hopper 440 is closed to prevent material from flying out. The inclination direction of the bottom of the discharge hopper 440 is the same as that of the discharge hopper 440, so that the material entering the discharge hopper 440 can smoothly enter the discharge mechanism 600, avoiding material accumulation. The loading mechanism 400 occupies space in the height direction. Compared with other loading methods to transport a large number of semi-finished workpieces 10 to the discharge mechanism 600, it has the advantages of reducing workers' workload, rationally utilizing space, facilitating equipment miniaturization, and having a simple structure and low cost.

[0068] Reference Figure 3 Furthermore, in order to realize automatic replenishment of materials without manual operation, a shooting switch sensor 450 is provided on the discharge hopper 440 for detecting the material status in the discharge hopper 440. When there is material in the discharge hopper 440, the feeding drive mechanism 430 is not started. On the contrary, the feeding drive mechanism 430 drives the feeding hopper 420 to move for replenishing the material.

[0069] Reference Figure 3Furthermore, an alarm indicator light 460 is provided. The alarm indicator light 460 is used to prompt the replenishment of materials or remind the user that materials are insufficient. For example, when the feeding drive mechanism 430 drives the feeding hopper 420 to move for feeding, the alarm indicator light 460 prompts the user to replenish materials or remind the user that materials are insufficient. In this way, there is no need for a dedicated person to keep a close eye on the situation, thereby improving convenience.

[0070] Reference Figure 3 Furthermore, in order to stop the loading mechanism 400 from continuing to transport materials to the discharge mechanism 600 when there are enough semi-finished workpieces 10 in the discharge mechanism 600, and avoid the accumulation of semi-finished workpieces 10, the loading mechanism 400 also includes a material limiting mechanism 470, and the material limiting mechanism 470 includes a dual-axis cylinder 471 installed on the frame 310, a photoelectric switch sensor 473 installed on the dual-axis cylinder 471, and a baffle 472 connected to the driving shaft of the dual-axis cylinder 471. The photoelectric switch sensor 473 is used to detect the material status in the discharge mechanism 600. Under the control of the photoelectric switch sensor 473, the dual-axis cylinder 471 drives the baffle 472 to move close to the opening of the discharge hopper 440 or away from the opening of the discharge hopper 440.

[0071] It is worth mentioning that the baffle 472 of the limiting mechanism 470 not only responds quickly when the discharge mechanism 600 is driven by the dual-axis cylinder 471, and can effectively close the discharge port of the discharge hopper 440 to prevent the material from continuing to enter the discharge mechanism 600, but the baffle 472 can also buffer the speed of the material entering the discharge mechanism 600 at the discharge port of the discharge hopper 440, so that the material can fall accurately into the discharge mechanism 600 without the need to set up additional blocking components or modify the equipment, thereby optimizing the structure and reducing costs.

[0072] The loading mechanism 400 is matched with the discharging mechanism 600, which is suitable for occasions where a large amount of materials need to be sorted and arranged. In one embodiment, the discharging mechanism 600 can be a discharging mechanism 600 commonly used in the injection molding industry, such as conveyor belt discharging, roller discharging, vibration plate discharging, etc.

[0073] In this embodiment, in order to facilitate the miniaturization of the equipment and reduce the cost of the equipment, the discharge mechanism 600 is a vibrating plate, and the lifting and loading assembly 520 is flush with the discharge height of the discharge opening 411 of the vibrating plate. The specific structure of the vibrating plate can refer to the existing vibrating plate and will not be repeated here.

[0074] The discharging mechanism 600 arranges a large number of semi-finished workpieces 10 into ordered single semi-finished workpieces 10. It is necessary to sort the single semi-finished workpieces 10 at a fixed angle and arrange the sorted semi-finished workpieces 10 one by one in a preset material collection area. This is achieved by the positioning mechanism 500 and the material transfer mechanism 700. The positioning mechanism 500 is used to sort the single semi-finished workpieces 10 at a fixed angle, and the material transfer mechanism 700 is used to arrange the single semi-finished workpieces 10 sorted by the positioning mechanism 500 one by one in a preset material collection area.

[0075] Reference Figure 4 and Figure 5 Furthermore, in order to facilitate the miniaturization of the equipment and reduce the cost of the equipment, the positioning mechanism 500 includes a moving component 510 that can move relative to the frame 310, a lifting and loading component 520 installed on the moving component 510, and a rotating positioning component 550 located above the lifting and loading component 520. The lifting and loading component 520 is located at the discharge port 411 of the discharge mechanism 600. The lifting and loading component 520 and the rotating positioning component 550 are used to place a single material at a fixed angle. The moving component 510 moves relative to the frame 310 and has a discharge position located below the rotating positioning component 550 and a material picking position for the material transfer mechanism 700 to transfer the material. Compared with manually confirming the placement angle of the semi-finished workpiece 10 and then aligning it into the material tray, the work efficiency is improved and the labor cost is reduced; compared with using a robot to achieve the angular placement of the semi-finished workpiece 10, it has the advantages of reasonable use of space, convenient equipment miniaturization, simple structure and low cost.

[0076] Reference Figure 5 Specifically, the moving assembly 510 includes a driving cylinder 511 and a moving platform 512 connected to the driving shaft of the driving cylinder 511. The two ends of the moving platform 512 are movably mounted on two movable rods. The driving cylinder 511 is used to control the stroke, which has a fast response speed and controls the equipment cost. In other embodiments, it can also be implemented by using a motor screw subassembly, a motor synchronous belt assembly, etc.

[0077] Reference Figure 5 Specifically, the rotation positioning assembly 550 includes a rotation mounting frame 551 and a clamping mechanism 552 provided on the mounting frame. The jacking loading assembly 520 is located in the rotation mounting frame 551 and below the clamping mechanism 552. The clamping mechanism 552 includes a motor and a clamp connected to the motor.

[0078] Reference Figure 5 Specifically, the jacking and loading assembly 520 includes a jacking cylinder 521 connected to the moving platform 512 and a material installation assembly 530 connected to the driving shaft of the jacking cylinder 521.

[0079] Reference Figure 5 Specifically, the material installation assembly 530 includes a mounting member 531, a material placement table 532, and a buffer mechanism 540 located between the mounting member 531 and the material placement table 532. The mounting member 531 has a guide opening, and the buffer mechanism 540 includes a guide rod 541 connected to the material placement table 532 and a buffer spring 542 located on the guide rod 541. The guide rod 541 is placed in the guide opening, and the lifting cylinder 521 drives the mounting member 531 to move, and the mounting member 531 drives the buffer spring 542 to drive the material placement table 532. When subjected to force, the material placement table 532 moves toward the mounting member 531 through the two guide rods 541.

[0080] Reference Figure 5 Furthermore, in order to ensure that the material can fall accurately on the material placement table 532 and facilitate the lifting of the loading assembly 520 for clamping by the clamping mechanism 552, the positioning mechanism 500 also includes a stop bar 553, which is arranged on the side of the mounting member 531 or the material placement table 532 away from the discharge port 411.

[0081] During operation, the semi-finished workpiece 10 fed from the vibrating plate falls onto the material placement table 532 by the inertia of the conveying channel. The blocking bar 553 is arranged on the side of the mounting member 531 or the material placement table 532 away from the discharge opening 411 to block the continued movement of the semi-finished workpiece 10, thereby falling onto the material placement table 532. The material placement table 532 has a mounting slot corresponding to the semi-finished workpiece 10. The lifting cylinder 521 drives the mounting member 531 to move, and the mounting member 531 drives the buffer spring 542 to drive the The material placement table 532 is close to the clamping mechanism 552. The clamping jaws of the clamping mechanism 552 clamp the semi-finished workpiece 10 and rotate under the drive of the motor, so that the semi-finished workpiece 10 can fall into the installation slot and be sorted at a fixed angle. In order to avoid damage to the semi-finished workpiece 10, when subjected to force, the material placement table 532 moves toward the mounting member 531 through two guide rods 541, thereby buffering the impact force when the material mounting assembly 530 contacts the clamping jaws, achieving flexible grasping and placement to avoid damage to the workpiece. After the semi-finished workpiece 10 is placed on the material placement table 532 at a corresponding angle, the two ends of the movable table 512 are movably mounted on two movable rods. The driving cylinder 511 drives the movable table 512 to move relative to the two movable rods to the material removal position, making it easy to remove the semi-finished workpiece 10 from the material placement table 532.

[0082] After the discharge mechanism 600 conveys a single material, the positioning mechanism 500 needs to place and convey the single material at a fixed angle. In order to avoid the need for manual control of the opening and closing of the discharge mechanism 600 and to reduce the cost of the equipment, in this embodiment, a mechanical method is used to prevent the remaining semi-finished workpieces 10 on the discharge mechanism 600 from entering the positioning mechanism 500 and causing functional dysfunction. In this embodiment, the positioning mechanism 500 also includes a limiting mechanism 560, which includes a limiting cylinder 561 connected to the side of the rotating mounting frame 551 close to the discharge position 411 and a limiting bar 562 connected to the driving axis of the limiting cylinder 561. The limiting bar 562 can be moved closer to or away from the discharge position 411 under the drive of the limiting cylinder 561.

[0083] Reference Figure 5 Specifically, when a single semi-finished workpiece 10 enters the material placement table 532, the limit bar 562 is driven by the cylinder to approach the discharge position 411, thereby blocking the next semi-finished workpiece 10 from entering the material placement table 532. After the semi-finished workpiece 10 on the material placement table 532 is taken out and returned to its position, the limit bar 562 is driven by the cylinder to move away from the discharge position 411, thereby allowing the next semi-finished workpiece 10 to enter the material placement table 532.

[0084] It should be noted that when the material discharging mechanism 600 and the positioning mechanism 500 are used alone, the material transfer mechanism 700 can be used for manual material collection or for material collection by a robot. In order to improve efficiency and reduce labor costs and equipment costs, in this embodiment, the material transfer mechanism 700 includes a material transfer slide 710 installed on the frame 310, and a material transfer robot 720 slidably installed on the material transfer slide 710. The material transfer robot 720 can move between the material discharge position and the material collection position. Compared with the use of a robot to obtain material from the material placement table 532, because in this embodiment, the material transfer mechanism 700 only moves in one direction, it can make the equipment structure compact and reduce costs.

[0085] Reference Figure 6 Furthermore, to improve production efficiency and facilitate equipment automation, the loading and sorting system 300 also includes a positioning jig 730 located in the predetermined area. The positioning jig 730 includes a jig frame 731 and mounting portions 733 arranged sequentially on the jig frame 731. The material transfer mechanism 700 places individual semi-finished workpieces 10 on each mounting portion 733. The aforementioned three-axis robot 200 then removes the placed semi-finished workpieces 10 from the positioning jig 730 and places them into the injection molding machine 100 for secondary injection molding.

[0086] It should be noted that when not used in conjunction with the injection molding machine 100, the positioning fixture 730 can be replaced with a material tray for placing the semi-finished workpiece 10. The material tray can be replaced with a new one manually or mechanically to achieve material sorting.

[0087] Furthermore, in order to overcome the problem that the material transfer mechanism 700 can only be placed in one direction, resulting in insufficient material discharge, the loading and sorting system 300 also includes a jig table 732 and a jig drive cylinder 511. The jig table 732 and the jig frame 731 are connected by a slide rail, and the jig drive cylinder 511 is connected to the jig frame 731 through a connector to drive the jig frame 731 to move closer to or away from the material transfer mechanism 700. In this way, it can not only solve the problem that the material transfer mechanism 700 can only be placed in one direction, resulting in insufficient material discharge, but also can be placed in multiple rows to improve production efficiency, and compared to using a manipulator to achieve multiple rows and columns, the cost is lower. In this embodiment, the jig frame 731 is provided with two rows of mounting portions 733 arranged in sequence, which are adapted to the mold of the injection molding machine 100. In other embodiments, the jig frame 731 may be provided with more than two rows of mounting portions 733.

[0088] Reference Figure 6 Furthermore, the jig table 732 is driven by the jig driving cylinder 511, which has lower cost and simpler structure than the use of a motor and a screw assembly, a gear assembly, etc. In order to make the stroke of the jig table 732 more precise, thereby ensuring the efficiency of the material transfer mechanism 700, the jig table 732 is provided with a positioning adjustment mechanism on each of the opposite sides of the moving direction of the jig frame 731. The positioning adjustment mechanism includes an adjustment table connected to the jig table 732 and a limit adjustment member 740 that can be adjusted along the moving direction of the jig frame 731.

[0089] In this embodiment, the limit adjustment member 740 is a hexagon socket screw.

[0090] Furthermore, in order to buffer the impact force of the jig table 732 driven by the jig drive cylinder 511, extend the life of the equipment and avoid damage to the semi-finished workpiece 10, in this embodiment, a buffer 750 is also provided on the adjustment table, and the buffer 750 is spaced apart from the limit adjustment member 740, and the end of the buffer 750 contacts the jig frame 731 before the limit adjustment member 740.

[0091] In other embodiments, the purpose of buffering can be achieved by setting a spring on the slide rails of the jig table 732 and the jig frame 731 to reduce the moving speed of the jig table 732.

[0092] In other embodiments, the limit adjustment member 740 may also be combined with the buffer 750 .

[0093] During operation, because the loading rack 410 is extended along the height direction of the frame 310, compared with other types of loading mechanisms 400, the discharge hopper 440 is at the bottom of the loading rack 410 at the initial position, so a large number of semi-finished workpieces 10 can be easily placed in the loading hopper 420. The loading hopper 420 rises to the material level opening 411, and the semi-finished workpieces 10 slide out of the discharge hopper 440 by inertia, and the semi-finished workpieces 10 fall into the discharge mechanism 600. The semi-finished workpieces 10 with too fast speed are blocked by the baffle 472 of the material limiting mechanism 470 to prevent them from flying out. The sorted semi-finished workpieces 10 enter the positioning mechanism 50 0 for fixed-angle sorting. The material transfer mechanism 700 places the individual semi-finished workpieces 10 sorted by the positioning mechanism 500 one by one onto a positioning fixture 730 in a pre-set material collection area. The positioning fixture 730 is driven back and forth by a pneumatic cylinder, allowing the material transfer mechanism 700 to arrange the semi-finished materials into two rows for the first suction assembly 260 of the material collection assembly 250 to be placed into the injection molding machine 100. The discharge hopper 440 is also equipped with a photoelectric switch sensor 450. When the discharge hopper 440 contains material, the loading drive mechanism 430 is not activated. Instead, the loading drive mechanism 430 drives the loading hopper 420 to move for refilling. An alarm indicator 460 prompts for replenishment of material or indicates insufficient material. For example, when the loading drive mechanism 430 drives the loading hopper 420 to move for refilling, an alarm indicator 460 prompts replenishment of material or indicates insufficient material. This eliminates the need for a dedicated person to constantly monitor the material, improving convenience. The material limiting mechanism 470 includes a photoelectric switch sensor 473 for detecting the material status in the discharge mechanism 600. In this way, when there are insufficient semi-finished workpieces 10 in the discharge mechanism 600, the baffle 472 retracts the discharge hopper 440 to continue unloading. When there are insufficient semi-finished workpieces 10 in the discharge hopper 440, the loading hopper 420 is lifted to continue replenishing the semi-finished workpieces 10, thereby realizing the automatic loading, discharging, swinging and feeding processes in the secondary injection molding process. After the secondary injection molding is completed, the second suction component 270 will take the secondary injection molded workpiece out of the mold of the injection molding machine 100 and transport it to the punching and discharging device to complete the processes of material removal, cutting, and classification of finished products and sprues.

[0094] Reference Figures 1 to 4 、 Figure 7 , about the specific structure of the punching and discharging device and the functions it can achieve.

[0095] As mentioned above, in the existing secondary injection molding process, the loading and taking processes are carried out by using a robot to take the material and the loading and unloading by the robot, which is too costly and requires additional installation space. In addition, the waiting time of the robot used for taking the material is too long, and the cost-effectiveness of the setting is low. Therefore, this will not be done. In this embodiment, the loading and taking processes are integrated into one robot, and after taking the material, it is sent to the punching mechanism 800 for punching, and then the re-finished product and waste material are sent to the finished product channel 910 and the waste channel respectively. By combining the processes of taking the material, cutting, and sorting the finished product and the sprue, the idle time of the same robot performing the two processes is optimized, which facilitates equipment automation and improves production efficiency.

[0096] Reference Figure 7 Specifically, the punching and discharging device includes a punching mechanism 800 and a discharging mechanism 900 provided on the frame 310. The injection molding machine 100 is arranged adjacent to the frame 310. The frame 310 is provided with a material taking area. The punching mechanism 800 is used to punch and separate the secondary injection molded workpiece into the injection molded finished product 20 and the nozzle waste 30. The discharging mechanism 900 is a waste channel 920 and a finished product channel 910 provided on the frame 310 and connected to the outside world. The rail assembly 210 can drive the material-grabbing robot 220 to move in the X-axis, Y-axis and Z-axis directions. The first suction assembly 260 can suck the semi-finished workpiece 10 from the material-grabbing area to the injection molding machine 100 for secondary injection molding. The second suction assembly 270 can take the secondary injection molded part out of the injection molding machine 100 and move it to the punching and discharging device for punching and separation. Finally, the injection molded product 20 is put into the finished product channel 910, and the sprue waste 30 is put into the waste channel 920. During operation, the second suction component 270 sucks the secondary injection molded workpiece from the injection molding machine 100, places the secondary injection molded workpiece on the punching and discharging device, and the punching mechanism 800 punches and separates the secondary injection molded workpiece into the injection molded finished product 20 and the sprue waste 30, and then puts the injection molded finished product 20 into the finished product channel 910, and the sprue waste 30 into the waste channel 920. Then, the first suction component 260 sucks the semi-finished workpiece 10 from the material picking area and places it on the injection molding machine 100 for secondary injection molding processing. On the one hand, it improves production efficiency and reduces equipment costs. On the other hand, there is no problem of idle robots. By integrating the above engineering processes together, a complete process flow of automated injection molding is realized.

[0097] Reference Figure 7Furthermore, in order to facilitate the transportation of the secondary injection molded workpiece for punching and separation, the punching mechanism 800 includes a discharge table 810 movably connected to the frame 310 and a punching assembly 820 connected to the frame 310. The discharge table 810 has a discharge position outside the punching assembly 820 and a punching position below the punching assembly 820. In order to ensure the punching and separation effect of the secondary injection molded workpiece, the punching assembly 820 includes a punching frame 821, a clamping device 830 and a punching device 840 provided on the punching frame 821. The clamping device 830 is used to clamp the injection molded product 20, and the punching device 840 is used to cut and separate the secondary injection molded workpiece on the discharge table 810 into the injection molded product 20 and the sprue waste 30. The unloading platform 810 is slidably connected to the frame 310 via slide rails, allowing it to switch between a discharge position and a punching position. Driven by a pneumatic cylinder, the unloading platform 810 features a fast response and a simple structure. During operation, the clamping device 830 first presses the finished injection molded products 20 onto the unloading platform 810 one by one, facilitating the cutting and separation of the nozzle by the punching device 840, thus preventing shaking during the punching process that could affect the punching effect.

[0098] Reference Figure 7 Specifically, to improve punching efficiency, the punching device 840 includes a punching cylinder 841 mounted on the punching frame 821 and a punching blade 842 drivingly connected to the punching cylinder 841. The punching blade 842 cuts the secondary injection molded workpiece under the drive of the punching cylinder 841. In this embodiment, two punching cylinders 841 are provided, one corresponding to the sprue between the two rows of injection molded products 20, to ensure effective punching.

[0099] Specifically, to ensure the compacting effect while avoiding damage to the finished injection molded product 20, the compacting device 830 includes a compacting cylinder 831, a pressing mounting plate 832 in transmission connection with the compacting cylinder 831, and a pressing soft block 833 mounted on the pressing mounting plate 832. Driven by the compacting cylinder 831, the pressing mounting plate 832 compacts the finished injection molded product 20 on the unloading platform 810. The pressing mounting plate 832 is mounted with a pressing soft block 833 corresponding to the plastic of the finished injection molded product 20. Driven by the pressing cylinder, each pressing soft block 833 ensures the compacting effect on the finished injection molded product 20, thereby ensuring the subsequent punching work. During operation, the second suction component 270 takes out the secondary injection molded workpiece from the mold of the injection molding machine 100 and places it on the discharge table 810. The discharge table 810 moves to the punching position, and the clamping cylinder 831 drives the pressing mounting plate 832 so that the pressing soft block 833 presses the injection molded products 20 on the discharge table 810 one by one. The punching knife 842 cuts the secondary injection molded workpiece into injection molded products 20 and sprue waste 30 under the drive of the punching cylinder 841. The discharge table 810 moves to the material taking position, and the second suction cup 271 of the second suction component 270 sucks the injection molded product 20, and the sprue clamp 272 clamps the sprue waste 30, and then respectively puts the injection molded product 20 into the finished product channel 910 and the sprue waste 30 into the waste channel 920. The finished product channel 910 and the waste channel 920 are both arranged in the frame 310, that is, the channel is partially blocked by the frame 310. The entrances of the finished product channel 910 and the waste channel 920 are both expanded, like a funnel, to facilitate the injection molding of the finished product 20 and the sprue waste 30 to fall in.

[0100] The above description is only a preferred embodiment of the present invention and does not limit the patent scope of the present invention. All equivalent structural transformations made by using the contents of the present invention description and drawings under the inventive concept of the present invention, or direct / indirect application in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A secondary injection molding system, characterized in that: include: A secondary injection molding device, comprising an injection molding machine and a three-axis manipulator mounted on the injection molding machine; The three-axis manipulator includes a three-axis guide rail assembly and a material-picking manipulator connected to the three-axis guide rail assembly, the material-picking manipulator includes a manipulator gripper connected to the three-axis guide rail assembly, a rotating cylinder movably connected to the manipulator gripper, and a material-picking assembly connected to the rotating cylinder, the rotating cylinder can swing relative to the manipulator gripper, and the material-picking assembly can rotate circumferentially relative to the rotating cylinder, the material-picking assembly includes a first suction assembly and a second suction assembly, the first suction assembly is used to suck / place semi-finished workpieces, and the second suction assembly is used to suck / place secondary injection molded workpieces; and the second suction assembly is integrated with a sprue fixture; The loading and sorting system includes a frame, a loading mechanism, a discharge mechanism, a positioning mechanism, and a material transfer mechanism respectively located on the frame. The positioning mechanism includes a moving assembly that can move relative to the frame, a lifting and loading assembly mounted on the moving assembly, and a rotating positioning assembly located above the lifting and loading assembly. The moving assembly moves relative to the frame and has a material discharge position located below the rotating positioning assembly and a material retrieval position for the material transfer mechanism to transfer materials. The lifting and loading assembly is located at the discharge opening of the discharge mechanism. A punching and discharging device, comprising a punching mechanism and a discharging mechanism provided on the frame, wherein the punching mechanism is configured to synchronously punch and separate the secondary injection molded workpiece into injection molded finished products and nozzle waste; The moving assembly includes a driving cylinder and a moving platform connected to a driving shaft of the driving cylinder, and both ends of the moving platform are movably mounted on two movable rods; The rotary positioning assembly includes a rotary mounting frame and a clamping mechanism provided on the mounting frame. The lifting and loading assembly is located in the rotary mounting frame and below the clamping mechanism. The clamping mechanism includes a motor and a clamping mechanism connected to the motor. The lifting and loading assembly includes a lifting cylinder connected to the moving platform and a material installation assembly connected to the driving shaft of the lifting cylinder; The material installation assembly includes a mounting part, a material placement table, and a buffer mechanism located between the mounting part and the material placement table. The mounting part has a guide opening. The buffer mechanism includes a guide rod connected to the material placement table and a buffer spring located on the guide rod. The guide rod is placed in the guide opening. The lifting cylinder drives the mounting part to move, and the mounting part drives the buffer spring to drive the material placement table. When subjected to force, the material placement table moves toward the mounting part through two guide rods.

2. The secondary injection molding system according to claim 1, wherein: The secondary injection molding system also includes a crusher. The discharging mechanism is a waste channel and a finished product channel provided on the frame and connected to the outside. The inlet of the crusher corresponds to the outlet of the waste channel. The crusher is used to crush the waste at the nozzle.

3. The secondary injection molding system according to claim 1, wherein: The material picking assembly also includes a connecting piece connected to the rotating cylinder, the first suction assembly includes a first mounting plate, and a first suction cup provided on the first mounting plate, the second suction assembly includes a second mounting plate, a second suction cup provided on the second mounting plate and a sprue clamp provided on the second mounting plate, the first mounting plate and the second mounting plate are both fixed to the connecting piece, and the first mounting plate and the second mounting plate are arranged opposite to each other with an installation space separated therebetween, and a fixing piece is provided in the installation space to connect and support the first mounting plate and the second mounting plate.

4. The secondary injection molding system according to claim 1, wherein: The punching mechanism includes a discharge table movably connected to the frame and a punching assembly connected to the frame. The discharge table has a discharge position outside the punching assembly and a punching position below the punching assembly. The punching assembly includes a punching frame, a clamping device and a punching device provided on the punching frame. The clamping device is used to clamp the injection molded product, and the punching device is used to cut and separate the secondary injection molded workpiece on the discharge table into the injection molded product and the sprue waste.

5. The secondary injection molding system according to claim 4, wherein: The punching device includes a punching cylinder mounted on the punching frame and a punching knife in transmission connection with the punching cylinder, wherein the punching knife cuts the secondary injection molded workpiece under the drive of the punching cylinder; The pressing device includes a pressing cylinder, a pressing mounting plate transmission-connected to the pressing cylinder, and a pressing soft block mounted on the pressing mounting plate. The pressing mounting plate presses the injection molded product on the discharge table under the drive of the pressing cylinder.

6. The overmolding system of claim 1, wherein: The loading and sorting system further includes a positioning jig, which includes a jig frame and mounting parts sequentially arranged on the jig frame. The material transfer mechanism places individual semi-finished workpieces on one of the mounting parts one by one.

7. The overmolding system of claim 1, wherein: The feeding mechanism includes a feeding rack extending along the height direction of the frame, a feeding hopper located on one side of the feeding rack and slidably connected to the feeding rack, a feeding drive mechanism driving the feeding hopper to move, and a discharge hopper located on the other side of the feeding rack. The feeding rack is installed on the frame, and a material level port is provided on the feeding rack. The material level port is located above the discharge mechanism, and the discharge hopper corresponds to the material level port, wherein the feeding hopper is used to place a material pile, and the feeding drive mechanism can drive the feeding hopper to move to the material level port, and the material pile falls from the discharge hopper into the discharge mechanism through the material level port.

8. The overmolding system of claim 1, wherein: The discharge mechanism is a vibrating plate, and the lifting and loading assembly is flush with the discharge height of the discharge opening of the vibrating plate; And / or, the material transfer mechanism includes a material transfer slide rail installed on the frame, and a material transfer robot slidably installed on the material transfer slide rail, and the material transfer robot can move between the material discharge position and the material collection position.

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