Plastic rubber coating linkage forming device of sealing cover

Abstract

A plastic rubber coating linkage forming device of a sealing cover comprises an injection molding machine, an LSR forming machine, a six-axis mechanical arm and a switching mechanism, the switching mechanism comprises a switching table, an injection molding tray and a rotating tray assembly, a first linear sliding module is arranged on the switching table, and a second linear sliding module is installed on a first sliding plate of the first linear sliding module; a lifting air cylinder is arranged on a second sliding plate of the second linear sliding module, a vacuum suction cup is arranged at the telescopic rod end of the lifting air cylinder, the injection molding tray is provided with a first positioning column, the rotating tray assembly comprises a pair of LSR forming trays, the vacuum suction cup adsorbs a cover body on the first positioning column and transfers the cover body to the LSR forming trays, and when the cover body is fully placed, the LSR forming trays rotate by 180 degrees; and the six-axis manipulator automatically puts the cover body fully placed on the LSR forming tray into the LSR forming machine for encapsulation forming. According to the utility model, seamless connection and synchronous production between the injection molding machine and the LSR forming machine are realized, and the production efficiency of the sealing cover is improved.

Description

Technical Field

[0001] This utility model relates to the field of production technology and equipment for sealing caps, and in particular to a plastic overmolding and molding device for sealing caps. Background Technology

[0002] A sealing cap typically includes a cap body and a sealing ring inside the cap body. (See reference...) Figure 10 , Figure 11 The cap body is typically made of plastic and is injection molded using an injection molding machine. After injection molding, the cap body is then overmolded using an LSR (liquid silicone rubber) molding machine to obtain a cap containing a sealing ring. In existing technology, the cap body is produced using an 8-cavity injection mold during injection molding, allowing for the production of 8 cap bodies at a time. However, the overmolding process in the LSR molding machine uses a 16-cavity overmolding mold, requiring the overmolding of 16 cap bodies at a time to obtain a sealing cap. Therefore, due to the fabric of the mold, the cap body cannot be directly removed from the injection molding machine and placed into the LSR molding machine for overmolding after injection molding using a six-axis robot. Consequently, the injection molding machine and the LSR molding machine cannot work together to produce the sealing cap. They operate independently, affecting the production efficiency of the sealing cap.

[0003] Therefore, it is necessary to design a plastic overmolding linkage device for sealing caps to achieve seamless connection and synchronous production between injection molding machines and LSR molding machines, thereby improving the production efficiency of sealing caps. Summary of the Invention

[0004] To achieve the above objectives, this utility model is implemented as follows: A plastic overmolding linkage device for sealing caps includes an injection molding machine and an LSR molding machine arranged side by side. A six-axis robot is provided between the injection molding machine and the LSR molding machine. A conversion mechanism is also provided at the front end of the six-axis robot between the injection molding machine and the LSR molding machine. The conversion mechanism includes a conversion table, an injection tray fixed to one side of the conversion table, and a rotating tray assembly rotatably disposed on the other side of the conversion table. The conversion table has a first linear sliding module on its longitudinal edge. The first linear sliding module has a first sliding plate that slides along the longitudinal direction of the conversion table, and the first sliding plate extends perpendicular to the longitudinal direction of the conversion table. A second linear sliding module is mounted on the first sliding plate. The second linear sliding module has a second sliding plate that slides along the width direction of the conversion table. A lifting cylinder is provided on the second sliding plate. The telescopic rod end of the lifting cylinder has a downward-facing vacuum suction cup. The injection molding tray is provided with multiple first positioning posts for positioning the cover. The first positioning posts are aligned with the cover cavity of the injection mold in the injection molding machine. The injection-molded cover is automatically removed and positioned on the first positioning posts by a six-axis robot. The rotating tray assembly includes a pair of LSR molding trays. Each LSR molding tray is provided with a second positioning post for positioning the cover. The second positioning post is aligned with the cover cavity of the molding mold in the LSR molding machine. The vacuum suction cup is used to pick up the cover on the first positioning post by a lifting cylinder. The cover on the first positioning post is transferred to the LSR molding tray near the injection molding tray by the first linear sliding module and the second linear sliding module. When the LSR molding tray near the injection molding tray is full of cover, the rotating tray assembly rotates the LSR molding tray 180°. The six-axis robot automatically puts the cover full of LSR molding tray into the LSR molding machine for overmolding.

[0005] Furthermore, the six-axis robot is equipped with a vacuum suction cup clamp. The vacuum suction cup clamp has multiple suction cups corresponding to the injection mold and the forming mold for LSR molding. The six-axis robot uses the vacuum suction cup clamp connected to it to pick up the cover inside the injection mold in one go and move and position it on the injection tray. The six-axis robot can also use the vacuum suction cup clamp connected to it to pick up the cover on the LSR forming tray in one go and put it into the LSR molding machine.

[0006] Furthermore, the injection molding tray includes a fixed plate and a floating plate movably disposed on the fixed plate. The first positioning post is disposed on the fixed plate, and the floating plate has a plurality of positioning notches corresponding to the first positioning post. The vacuum suction cup clamp of the six-axis robot positions the cover on the first positioning post from the positioning notches.

[0007] Furthermore, the fixed plate is provided with multiple spring positioning grooves, and springs are installed in the spring positioning grooves. The springs abut against the floating plate. Through the springs, the floating plate is movably and elastically connected above the fixed plate. When the vacuum suction cup clamp of the six-axis robot positions the cover body at the first positioning post through the positioning notch, the floating plate can effectively buffer the pressure of the six-axis robot positioning the cover body. Moreover, through the movement of the floating plate, the cover body is quickly positioned by the buffering and guiding effect of the positioning notch.

[0008] Furthermore, the bottom of the float plate is provided with multiple spring positioning posts for fixing the springs, and the spring positioning posts correspond to the spring positioning grooves. The float plate forms an elastic connection with the springs through the spring positioning posts, thereby achieving the floating effect of the float plate on the fixed plate.

[0009] Furthermore, the bottom of the floating plate is provided with a limiting post. When the vacuum suction cup gripper of the six-axis robot positions the cover at the first positioning post through the positioning notch, the vacuum suction cup gripper drives the floating plate to squeeze the spring and approach the fixed plate. When the limiting post of the floating plate abuts against the fixed plate, the floating plate no longer approaches the fixed plate. Due to the blocking effect of the floating plate on the vacuum suction cup gripper, the cover adsorbed on the vacuum suction cup gripper can be well detached from the vacuum suction cup gripper and stay on the injection tray.

[0010] Furthermore, the rotating tray assembly also includes a rotating cylinder and a rotating plate connected to the bottom of the pair of LSR molding trays. The bottom center of the rotating plate is connected to the rotating disk of the rotating cylinder. By means of the rotating cylinder, the pair of LSR molding trays can be rotatably switched between the two sides of the switching platform.

[0011] Furthermore, each of the second positioning posts is hollow in the center, and a sensor with its sensing direction facing upwards is installed in the hollow area. After the cover is transferred from the injection molding tray to the LSR molding tray, and the cover is positioned, the sensor on the second positioning post can detect it accordingly. When all the second positioning posts of the LSR molding tray are fixed with covers, it indicates that the LSR molding tray has been filled with covers transferred from the injection molding tray. The sensor controls the rotary cylinder to rotate 180°, realizing the replacement of the injection molding tray.

[0012] This invention, by setting a conversion mechanism between an injection molding machine and an LSR molding machine, realizes the conversion of the product from an 8-cavity injection mold to a 16-cavity overmolding mold. A six-axis robot automatically removes the cap from the injection molding machine and positions it on the injection tray of the conversion mechanism. The cap is then transferred to the LSR molding tray by the conversion mechanism, and then the six-axis robot automatically places the cap from the LSR molding tray into the LSR molding machine for overmolding. This achieves the linkage molding of plastic overmolding for sealing caps, greatly improving the production efficiency of sealing caps.

[0013] This invention, through the floating plate structure of the injection molding tray, can effectively realize the positioning of the vacuum suction cup clamp and the detachment of the cover after the six-axis robot removes the cover from the injection molding machine, greatly improving the placement efficiency of the cover on the injection molding tray after the six-axis robot removes it.

[0014] This invention utilizes a rotating tray assembly and a rotating cylinder to switch between two LSR molding trays, thereby facilitating the transfer of the cover body via the first and second linear sliding modules.

[0015] This invention uses a sensor installed on the second positioning post on the LSR molding tray to determine whether the LSR molding tray is full of lids. When the LSR molding tray is full of lids, the sensor detects this and controls the rotation of the rotary cylinder via an externally installed controller, thereby switching between the two LSR molding trays. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0017] Figure 2 for Figure 1 Top view.

[0018] Figure 3 This is a schematic diagram of the three-dimensional structure of the conversion mechanism.

[0019] Figure 4 for Figure 3 A magnified view of part A in the diagram.

[0020] Figure 5 This is a schematic diagram of the three-dimensional structure of the rotating tray assembly.

[0021] Figure 6 This is a three-dimensional structural diagram of the rotating tray assembly viewed from below.

[0022] Figure 7 This is a schematic diagram of the three-dimensional structure of an injection molded tray.

[0023] Figure 8 This is a schematic diagram of the exploded three-dimensional structure of an injection molded pallet.

[0024] Figure 9 This is a three-dimensional structural diagram of the floating platform viewed from below.

[0025] Figure 10 This is a schematic diagram of the three-dimensional structure of the sealing cap.

[0026] Figure 11 This is a schematic diagram of the bottom sealing method of the cap.

[0027] The components are: 1-Injection molding machine, 2-LSR molding machine, 3-Conversion mechanism, 31-Conversion table, 32-First linear sliding module, 33-First sliding plate, 34-Second linear sliding module, 341-Second sliding plate, 342-Lifting cylinder, 343-Vacuum suction cup, 35-Injection tray, 351-Floating plate, 3511-Positioning notch, 3512-Spring positioning post, 3513-Limiting post, 352-Fixed plate, 3521-First positioning post, 3522-Spring positioning groove, 353-Spring, 36-Rotating tray assembly, 361-LSR molding tray, 362-Second positioning post, 363-Sensor, 364-Rotating plate, 365-Rotating cylinder, 4-Six-axis robot, 5-Vacuum suction cup clamp, 6-Sealing cover, 61-Cover body, 62-Sealing ring. Detailed Implementation

[0028] To further explain the technical solution of this utility model, the following detailed description is provided through specific embodiments.

[0029] In this embodiment, refer to Figure 10 , Figure 11 The sealing cap 6 includes a cap body 61 and a sealing ring 62. The cap body 61 is a plastic part, which is injection molded by an injection molding machine 1. The sealing ring 62 is a silicone body, which is obtained by overmolding by an LSR (liquid silicone) molding machine.

[0030] Reference Figure 1 , Figure 2 A plastic overmolding linkage molding device for sealing caps includes an injection molding machine 1 and an LSR molding machine 2 arranged in parallel. A six-axis robot 4 is provided between the injection molding machine 1 and the LSR molding machine 2. The six-axis robot 4 is equipped with a vacuum suction cup clamp 5. The vacuum suction cup clamp 5 is equipped with multiple suction cups corresponding to the injection mold and suction cups corresponding to the molding mold of the LSR molding machine 2. A conversion mechanism 3 is also provided at the front end of the six-axis robot 4 between the injection molding machine 1 and the LSR molding machine 2. The conversion mechanism 3 includes a conversion table 31, an injection tray 35 fixed to one side of the conversion table 31, and a rotating tray assembly 36 rotatably arranged on the other side of the conversion table 31. The six-axis robot 4 can use the vacuum suction cup clamp 5 connected to it to adsorb the cap 61 in the injection mold and move and position it on the injection tray 35 in one go. The six-axis robot 4 can also use the vacuum suction cup clamp 5 connected to it to adsorb the cap 61 on the LSR molding tray 361 in one go and put it into the LSR molding machine 2.

[0031] Reference Figure 3A first linear sliding module 32 is provided along the length edge of the converter platform 31. The first linear sliding module 32 has a first sliding plate 33 that slides along the length of the converter platform 31, and the first sliding plate 33 extends perpendicular to the length of the converter platform 31. A second linear sliding module 34 is mounted on the first sliding plate 33. The second linear sliding module 34 has a second sliding plate 341 that slides along the width of the converter platform 31. A lifting cylinder 342 is provided on the second sliding plate 341. (Refer to...) Figure 4 The telescopic rod end of the lifting cylinder 342 is equipped with a downward-facing vacuum suction cup 343. The first linear sliding module 32 and the second linear sliding module 34 can slide the lifting cylinder 342 with the vacuum suction cup 343 to any position on the upper plane of the injection tray 35 and the LSR molding tray 361 on the conversion table 31. The lifting cylinder 342 lowers the vacuum suction cup 343 and adsorbs the cover 61, thereby realizing the transfer of the cover 61 from the injection tray 35 to the LSR molding tray 361, and realizing the positioning of the cover 61 from the 6-cavity position of the corresponding injection mold to the 16-cavity position of the LSR molding mold.

[0032] Reference Figure 7 , Figure 8 , Figure 9 In this embodiment, the injection molding tray 35 includes a fixed plate 352 and a floating plate 351 movably disposed on the fixed plate 352. The fixed plate 352 is provided with a plurality of first positioning posts 3521 for positioning the cover 61. The first positioning posts 3521 are consistent with the cover cavity of the injection mold in the injection molding machine 1. The floating plate 351 is provided with a plurality of positioning notches 3511 corresponding to the first positioning posts 3521. The injection-molded cover 61 is automatically removed by the six-axis robot 4. The vacuum suction cup clamp 5 of the six-axis robot 4 positions the cover 61 on the first positioning posts 3521 from the positioning notches 3511. The positioning notches 3511 have a guiding function when the six-axis robot 4 places the cover 61.

[0033] To better realize the positioning cover 61 of the six-axis robot arm 4, the fixed plate 352 is provided with multiple spring positioning grooves 3522, and springs 353 are installed in the spring positioning grooves 3522. The springs 353 abut against the float plate 351. The bottom of the float plate 351 is provided with multiple spring positioning posts 3512 for fixing the springs 353. The spring positioning posts 3512 correspond to the spring positioning grooves 3522. The float plate 351 forms an elastic connection with the springs 353 through the spring positioning posts 3512, so as to realize the floating effect of the float plate 351 on the fixed plate 352. The bottom of the float plate 351 is provided with a limiting post 3513. The float plate 351 is movably and elastically connected above the fixed plate 352 via the spring 353. When the vacuum suction cup clamp 5 of the six-axis robot 4 positions the cover 61 at the first positioning post 3521 through the positioning notch 3511, the float plate 351 can effectively buffer the pressure of the six-axis robot 4 positioning the cover 61. The positioning notch 3511 is used to achieve buffering and guidance. At the same time, the vacuum suction cup clamp 5 drives the float plate 351 to squeeze the spring 353 and move closer to the fixed plate 352. When the limiting post 3513 of the float plate 351 abuts against the fixed plate 352, the float plate 351 no longer moves closer to the fixed plate 352. Due to the blocking effect of the float plate 351 on the vacuum suction cup clamp 5, the cover 61 adsorbed on the vacuum suction cup clamp 5 can be effectively detached from the vacuum suction cup clamp 5 and remain on the injection tray 35.

[0034] Reference Figure 5 , Figure 6 In this embodiment, the rotating tray assembly 36 includes a pair of LSR molding trays 361, a rotary cylinder 365, and a rotating plate 364 connected to the bottom of the pair of LSR molding trays 361. The rotating plate 364 is connected to the rotating disk of the rotary cylinder 365 at the bottom center. Each LSR molding tray 361 is provided with a second positioning post 362 for positioning the cover 61. The second positioning post 362 is consistent with the cover cavity of the molding mold in the LSR molding machine 2. Each second positioning post 362 is hollow in the center, and a sensor 363 with the sensing direction facing upward is installed in the hollow.

[0035] When the cover 61 is transferred from the injection molding tray 35 to the LSR molding tray 361, the vacuum suction cup 343 moves with the aid of the first linear sliding module 32 and the second linear sliding module 34, thereby transferring the cover 61 on the first positioning post 3521 to the LSR molding tray 361 near the injection molding tray 35. After the cover 61 is transferred from the injection molding tray 35 to the LSR molding tray 361, the positioning of the cover 61 enables the sensor 363 on the second positioning post 362 to detect it accordingly. When all the second positioning posts 362 on the LSR molding tray 361 are... When the cover 61 is fixed, it indicates that the cover 61 of the LSR molding tray 361 transferred from the injection tray 35 is full and the LSR molding tray 361 needs to be replaced. The sensor 363 controls the rotating cylinder 365 to rotate 180°, so that the two LSR molding trays 361 on both sides are switched by rotating 180°. This makes the LSR molding tray 361 closer to the injection tray 35 empty, while the LSR molding tray 361 with the cover 61 after rotation is automatically put into the LSR molding machine 2 for overmolding after being attracted by the vacuum suction cup clamp 5 of the six-axis robot arm 4.

[0036] The above embodiments merely illustrate the implementation of this utility model, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of this utility model patent. It should be noted that those skilled in the art can make several modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model.

Claims

1. A plastic overmolding and molding device for a sealing cap, comprising an injection molding machine and an LSR molding machine arranged in parallel, wherein a six-axis robot is provided between the injection molding machine and the LSR molding machine, characterized in that: A conversion mechanism is provided between the injection molding machine and the LSR molding machine at the front end of the six-axis robot. This conversion mechanism includes a conversion table, an injection tray fixed to one side of the conversion table, and a rotating tray assembly rotatably disposed on the other side of the conversion table. The conversion table has a first linear sliding module along its length edge. The first linear sliding module has a first sliding plate that slides along the length of the conversion table, and the first sliding plate extends perpendicular to the length of the conversion table. A second linear sliding module is mounted on the first sliding plate. The second linear sliding module has a second sliding plate that slides along the width of the conversion table. A lifting cylinder is provided on the second sliding plate, and the extension rod end of the lifting cylinder has a downward-facing vacuum suction cup. The injection tray has multiple first positioning posts for positioning the cover body. The first positioning posts are positioned relative to the injection molding machine's injection... The cap cavity of the plastic mold is consistent. The injection-molded cap is automatically taken out by a six-axis robot and positioned on the first positioning post. The rotating tray assembly includes a pair of LSR molding trays. Each LSR molding tray is provided with a second positioning post for positioning the cap. The second positioning post is consistent with the cap cavity of the molding mold in the LSR molding machine. By means of a lifting cylinder, the vacuum suction cup adsorbs the cap on the first positioning post. By means of the first linear sliding module and the second linear sliding module, the cap on the first positioning post is transferred to the LSR molding tray close to the injection molding tray. When the LSR molding tray close to the injection molding tray is full of caps, the rotating tray assembly rotates the LSR molding tray 180°. The six-axis robot automatically puts the cap full of LSR molding trays into the LSR molding machine for overmolding.

2. The plastic overmolding and molding device for a sealing cap according to claim 1, characterized in that: The six-axis manipulator is equipped with a vacuum suction cup gripper.

3. The plastic overmolding and molding device for a sealing cap according to claim 1, characterized in that: The injection molding tray includes a fixed plate and a floating plate movably disposed on the fixed plate. The first positioning post is disposed on the fixed plate. The floating plate has multiple positioning notches corresponding to the first positioning post. The vacuum suction cup clamp of the six-axis robot positions the cover on the first positioning post through the positioning notches.

4. The plastic overmolding and molding device for a sealing cap according to claim 3, characterized in that: The fixed plate is provided with multiple spring positioning slots, and springs are installed in the spring positioning slots. The springs abut against the float plate, and the float plate is movably and elastically connected above the fixed plate through the springs.

5. The plastic overmolding and molding device for a sealing cap according to claim 4, characterized in that: The bottom of the float plate is provided with a plurality of spring positioning posts for fixing the spring, and the spring positioning posts correspond to the spring positioning groove.

6. The plastic overmolding and molding device for a sealing cap according to claim 3, characterized in that: The bottom of the floating plate is equipped with a limiting post.

7. The plastic overmolding and molding device for a sealing cap according to claim 1, characterized in that: The rotating tray assembly further includes a rotating cylinder and a rotating plate connected to the bottom of the pair of LSR molding trays. The bottom of the rotating plate is connected to the rotating disk of the rotating cylinder. The pair of LSR molding trays are rotatably switched between the two sides of the switching platform by means of the rotating cylinder.

8. The plastic overmolding and molding device for a sealing cap according to claim 1, characterized in that: Each of the second positioning posts has a hollow center, and a sensor with the sensing direction facing upwards is installed in the hollow center.

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