Food grade plastic bottle cap compression molding machine

Abstract

The utility model discloses a food grade plastic bottle lid compression moulding machine, including the shell, the inside installation of shell is equipped with the revolving stage no.

Description

Technical Field

[0001] This utility model relates to the field of plastic bottle cap compression molding technology, specifically a food-grade plastic bottle cap compression molding machine. Background Technology

[0002] A compression molding machine is an industrial device that uses pressure and heat to mold plastics. Food-grade plastic bottle caps are mass-produced using compression molding machines. In the prior art, patent CN 222309553 U discloses a compression molding machine for plastic bottle caps, including a protective cover. Inside the protective cover is a compression frame, and multiple drive devices are fixedly installed on one side of the compression frame. The output end of each drive device has an installation groove, and an elastic clamping ring is fixedly installed inside the installation groove. This invention uses a rotating ring to cause a threaded ring to rotate within a threaded groove. When the threaded ring is removed from the drive device, it separates from the elastic clamping ring, releasing the clamping blocks on the elastic clamping ring. The elasticity of the elastic clamping ring itself separates each clamping block, thereby allowing the concave... The mold is removed from the drive unit. The structure design of the elastic clamping ring and the threaded ring allows the concave mold to be disassembled and replaced simply by rotating the rotating ring off the drive unit, reducing replacement time and improving the production efficiency of plastic bottle caps. When replacing the concave mold of the bottle cap, the rotating ring is rotated to make the threaded ring rotate in the thread groove. When the threaded ring is removed from the drive unit, the threaded ring separates from the elastic clamping ring. The replacement of the concave mold in the device requires the release of the limit one by one, which means that there is room for further improvement in the replacement speed and convenience of the concave mold. Therefore, we propose a food-grade plastic bottle cap compression molding machine. Utility Model Content

[0003] The technical problem to be solved by this utility model is to overcome the existing defects and provide a food-grade plastic bottle cap compression molding machine. This device can realize the installation and limiting of the integral concave mold or integral convex mold in the food-grade plastic bottle cap compression molding machine in one step through the transmission element, without the need for the operator to release the limit one by one. This improves the speed and convenience of changing the concave and convex molds of food-grade plastic bottle caps, and can effectively solve the problems in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a food-grade plastic bottle cap compression molding machine, comprising a housing, a turntable one installed inside the housing, a turntable two provided on the upper side of the turntable one, a rotating ring one provided on the outer side of the turntable two, a ring-shaped lower mold base evenly distributed around the outer side of the ring two, a concave mold inserted into the upper end of each of the lower mold bases, an ring-shaped upper mold base evenly distributed around the lower side of the ring one, a convex mold inserted into the lower end of each of the upper mold bases, and a locking mechanism; Locking mechanism: It includes slip rings, guide rods, dovetail grooves, slide blocks, telescopic components, inserts, and adjustment components. The slip rings are vertically symmetrically slidably connected to the outside of turntable two. The upper surface of turntable one and the lower surface of turntable one are both provided with uniformly distributed annular dovetail grooves. Slide blocks are slidably connected inside the dovetail grooves. A guide rod is provided at the end of the slide block near the vertical center of turntable two. The guide rod is slidably connected to the oblique circular groove on the adjacent slip ring. An insert is provided at the end of the guide rod near the vertical center of turntable two through the telescopic components. Slots are provided inside the lower mold base, the concave mold, the upper mold base, and the convex mold. The inserts are inserted into the adjacent slots. Adjustment components are provided between turntable one and turntable one and the adjacent slip rings. This device can realize the installation limit of the integral concave mold or integral convex mold in the food-grade plastic bottle cap compression machine in one step through the transmission element, without the need for operators to release the limit one by one, thereby improving the replacement speed and convenience of the device for the concave and convex molds of food-grade plastic bottle caps.

[0005] Furthermore, it also includes a microcontroller, which is located outside the housing and its input terminal is electrically connected to an external power supply, facilitating the control of electrical components within the device.

[0006] Furthermore, the bottom wall of the outer casing is provided with an electric rotary table. The input end of the electric rotary table is electrically connected to the output end of the microcontroller. The rotating end of the electric rotary table is fixedly connected to the lower side of the first turntable. The top wall of the outer casing is provided with an angle sensor through a fixing rod. The detection end of the angle sensor is fixedly connected to the upper center of the angle sensor. The angle sensor is bidirectionally electrically connected to the microcontroller to perform fixed-value control on the single rotation angle of the first turntable in the food-grade plastic bottle cap compression molding machine.

[0007] Furthermore, the telescopic assembly includes an annular seat one, a hollow rod, a sliding rod, an annular seat two, a spring, and a guide groove. The annular seat one is respectively disposed at one end of the guide rod near the vertical center of the turntable two. A hollow rod is provided on the side of the annular seat one near the vertical center of the turntable two. A sliding rod is slidably connected inside the hollow rod. An annular seat two is provided on the outside of the sliding rod. A spring is provided between the annular seat two and the vertically adjacent annular seat one. The spring is movably sleeved on the outside of the adjacent hollow rod. The end of the sliding rod near the vertical center of the turntable two is fixedly connected to the adjacent insertion post. A guide groove is opened on the outside of the sliding rod. The interior of the hollow rod is slidably connected to the adjacent guide groove through a guide strip, so that the overall vertical length of the telescopic assembly can change with the vertical movement of the corresponding insertion post.

[0008] Furthermore, the control assembly includes studs, knobs, and bellows. The studs are rotatably connected to the inside of the slip ring via sealed bearings. Both the turntable and the rotating ring are threadedly connected to adjacent studs via their own threaded grooves. A knob is provided at one end of each stud near the vertical center of the turntable. Bellows are provided between the turntable and the rotating ring and the adjacent slip ring. The bellows are movably fitted onto the outer end of the adjacent studs to adjust the vertical position of the slip rings in the food-grade plastic bottle cap compression molding machine.

[0009] Furthermore, the lower side of the rotating ring two is provided with annularly distributed electro-hydraulic push rods one, the telescopic ends of which are fixedly connected to the lower side of the vertically adjacent lower mold base. The upper side of the rotating ring one is provided with annularly distributed electro-hydraulic push rods two, and push rods are slidably contacted between the upper mold base and the adjacent punch. The telescopic ends of the electro-hydraulic push rods two are fixedly connected to the adjacent push rods. The input ends of both the electro-hydraulic push rods two and one are electrically connected to the output end of the microcontroller, providing power for the device to compress and unload food-grade plastic bottle caps.

[0010] Furthermore, the front wall of the outer casing is provided with a feeding plate, and the right wall of the outer casing is provided with a feeding pipe to collect and guide the food-grade plastic bottle caps inside the food-grade plastic bottle cap compression molding machine.

[0011] Furthermore, both the lower mold base and the upper mold base are equipped with magnetic rings inside, which initially magnetically fix the concave and convex molds installed in the food-grade plastic bottle cap compression molding machine.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows: This food-grade plastic bottle cap compression molding machine has the following advantages: When using a food-grade plastic bottle cap compression machine, the device uses a locking mechanism to slide and compress the guide rod and the inclined circular groove on the slip ring. Through the vertical movement of the slip ring, the corresponding insertion post can move synchronously. This allows for the installation and limiting of the overall concave mold or the overall convex mold in the food-grade plastic bottle cap compression machine in one step, eliminating the need for operators to release the limits one by one. This improves the speed and convenience of changing the concave and convex molds for food-grade plastic bottle caps. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a schematic diagram of the internal structure of this utility model; Figure 3 This is a cross-sectional structural diagram of turntable one and turntable two of this utility model; Figure 4 This is a schematic diagram showing the disassembled lower mold base and die of this utility model; Figure 5 This is a schematic diagram showing the disassembled upper mold base and punch of this utility model; Figure 6 This is an enlarged structural diagram of point A in this utility model; Figure 7 This is an enlarged structural diagram of section B of the present invention; Figure 8 This is an enlarged structural diagram of point C in this utility model.

[0014] In the diagram: 1. Housing, 2. Microcontroller, 3. Electric rotary table, 4. Rotary table one, 5. Rotary table two, 6. Rotary ring one, 7. Rotary ring two, 8. Locking mechanism, 81. Slip ring, 82. Guide rod, 83. Dovetail groove, 84. Slide seat, 85. Telescopic component, 851. Ring seat one, 852. Hollow rod, 853. Slide rod, 854. Ring seat two, 855. Spring, 856. Guide groove, 86. Insert post, 87. Adjustment component, 871. Stud, 872. Knob, 873. Bellows, 9. Electro-hydraulic push rod one, 10. Lower mold base, 11. Die, 12. Upper mold base, 13. Punch, 14. Electro-hydraulic push rod two, 15. Push rod, 16. Feed pipe, 17. Material plate, 18. Angle sensor, 19. Magnetic ring. Detailed Implementation

[0015] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0016] Please see Figure 1-8This embodiment provides a technical solution: a food-grade plastic bottle cap compression molding machine, including a housing 1, a turntable 4 installed inside the housing 1, a second turntable 5 on the upper side of the first turntable 4, a rotating ring 6 on the outer side of the second turntable 5, a second rotating ring 7 on the outer side of the first turntable 4, and an annularly evenly distributed lower mold base 10 installed on the outer side of the second rotating ring 7. A concave mold 11 is inserted into the upper end of each lower mold base 10. An annularly evenly distributed upper mold base 12 is provided on the lower side of the first turntable 6, and a convex mold 13 is inserted into the lower end of each upper mold base 12. The machine also includes a microcontroller 2 located outside the housing 1, with its input terminal electrically connected to an external power supply. An electric rotary table 3 is provided on the bottom wall of the housing 1, with its input terminal electrically connected to the output terminal of the microcontroller 2. The rotating end of the rotating stage 3 is fixedly connected to the lower side of the rotating stage 4. An angle sensor 18 is provided on the top wall of the outer shell 1 via a fixed rod. The detection end of the angle sensor 18 is fixedly connected to the upper center of the angle sensor 18. The angle sensor 18 is bidirectionally electrically connected to the microcontroller 2. The lower side of the rotating ring 7 is provided with uniformly distributed electro-hydraulic push rods 9. The telescopic ends of the electro-hydraulic push rods 9 are all fixedly connected to the lower side of the vertically adjacent lower mold base 10. The upper side of the rotating ring 6 is provided with uniformly distributed electro-hydraulic push rods 14. The upper mold base 12 and the adjacent punch 13 are in sliding contact with push rods 15. The telescopic ends of the electro-hydraulic push rods 14 are all fixedly connected to the adjacent push rods 15. The input ends of the electro-hydraulic push rods 14 and the electro-hydraulic push rods 9 are all connected to the output of the microcontroller 2. The device has an electrical connection at the end. The front wall of the outer casing 1 has a feeding plate 17, and the right wall of the outer casing 1 has a through-feed pipe 16. When using a compression molding machine to perform compression molding on food-grade plastic bottle caps, the device has twelve sets of compression molds. The microcontroller 2 marks the rightmost compression mold as station one, the last compression mold as station two, the leftmost compression mold as station three, and the frontmost compression mold as station four. Simultaneously, the microcontroller 2 marks vertically adjacent electro-hydraulic actuators 14 and 9 as a group, and sequentially numbers each group of electro-hydraulic actuators 14 and 9 according to their angular orientation in a circular distribution. The microcontroller 2 divides 360 degrees by the total number of compression molds to obtain the rotation speed of the turntable 4 for each rotation. The rotation angle is recorded as angle one. Then, the microcontroller 2 starts the electric rotary table 3, causing its rotating end to drive the rotation of rotary table one 4. The electric rotary table 3 rotates through an internal servo motor and worm gear transmission element. Simultaneously, the microcontroller 2 activates the angle sensor 18. The angle sensor 18 uses a high-performance integrated magnetic sensing element, utilizing the non-contact characteristic of magnetic signal sensing to measure the rotation angle of rotary table two 5 (i.e., rotary table one 4), and transmits the measurement result to the microcontroller 2 as an electrical signal. Based on this result and combined with angle one, the microcontroller 2 controls the start and stop of the electric rotary table 3, causing rotary table one 4 to stop after rotating by angle one value each time. This process is repeated until rotary table one 4 stops rotating.The microcontroller 2 acquires the labels of the electro-hydraulic actuators 14 and 9 corresponding to station one at this time. Then, the food-grade plastic bottle cap molding material is conveyed to the cavity 11 at this position via an external feeding device. Simultaneously, the microcontroller 2 acquires the labels of the electro-hydraulic actuators 14 and 9 corresponding to station two at this time. The microcontroller 2 controls the electro-hydraulic actuator 9 with the labeled label to move its extension end, causing the corresponding lower mold base 10 and cavity 11 to move vertically upwards. Through the compression between the cavity 11 and the vertically corresponding punch 13, the food-grade plastic bottle cap material is molded. During the process, the microcontroller 2 uses its own timing unit and combines the travel distance of the telescopic end of the electro-hydraulic actuator 9 per unit time to precisely control the travel distance of the telescopic end of the electro-hydraulic actuator 9. At the same time, the microcontroller 2 obtains the labels of the electro-hydraulic actuator 14 and electro-hydraulic actuator 9 corresponding to the station at this time. Then, the microcontroller 2 controls the electro-hydraulic actuator 9 corresponding to the label to retract its telescopic end to the initial state, thereby separating the concave mold 11 from the corresponding convex mold 13. At this time, the molded food-grade plastic bottle cap adheres to the convex mold 13 of this station through its own internal thread. Simultaneously, the microcontroller 2 acquires the labels of the electro-hydraulic actuator 2 14 and electro-hydraulic actuator 1 9 corresponding to station four at this time. Then, the microcontroller 2 controls the electro-hydraulic actuator 2 14 with the corresponding label to move its telescopic end vertically downward and then reset. The telescopic end of the electro-hydraulic actuator 2 14 moves vertically downward, thereby driving the corresponding actuator 15 to move downward synchronously, thereby pushing the molded bottle cap on the punch 13 at this position off. The rear end of the feeding plate 17 is located in the vertical gap between the punch 13 and the die 11 in station four. The molded food-grade plastic bottle cap falls into the feeding plate 17 and moves along the inclined surface of the feeding plate 17. The process of collecting and repeating this step, controlled by a microcontroller 2, achieves the compression molding of food-grade plastic bottle caps. The device contains a slip ring, which can be divided into two parts: a conductive slip ring and a connecting contact point. The conductive slip ring is fixedly mounted on the turntable 4, while the connecting contact point is laid on the housing of the electric rotary table 3. Electro-hydraulic actuators 9 and 14 are electrically connected to the microcontroller 2 via the slip ring. The slip ring prevents the electro-hydraulic actuators 9 and 14 from becoming entangled during the rotation of the turntable 4. The device also includes a locking mechanism 8. Locking mechanism 8: It includes a slip ring 81, a guide rod 82, a dovetail groove 83, a slide block 84, a telescopic assembly 85, a pin 86, and an adjusting assembly 87. The slip rings 81 are vertically symmetrically slidably connected to the outside of the turntable 2 5. The upper surface of the turntable 1 4 and the lower surface of the turntable 1 6 are both provided with uniformly distributed annular dovetail grooves 83. The slide blocks 84 are slidably connected inside the dovetail grooves 83. The end of the slide block 84 near the vertical center of the turntable 2 5 is provided with a guide rod 82. The guide rod 82 is slidably connected to the oblique circular groove on the adjacent slip ring 81. The end of the guide rod 82 near the vertical center of the turntable 2 5 is provided with a pin 86 through the telescopic assembly 85. The lower mold base 10, the cavity mold 11, the upper mold base 12, and the punch mold 13 are all provided with slots. The pin 86 All 6 are inserted into the adjacent slots. Adjustment components 87 are provided between the turntable 4 and the rotating ring 6 and the adjacent sliding ring 81. The telescopic component 85 includes annular seat 851, hollow rod 852, sliding rod 853, annular seat 854, spring 855, and guide groove 856. Annular seat 851 is respectively located at one end of the guide rod 82 near the vertical center of the turntable 5. Hollow rods 852 are provided on the side of annular seat 851 near the vertical center of the turntable 5. Sliding rods 853 are slidably connected inside each hollow rod 852. Annular seat 854 is provided on the outer side of each sliding rod 853. Springs 855 are provided between annular seat 854 and the vertically adjacent annular seat 851. Springs 855 are movably sleeved on the outer side of the adjacent hollow rod 852. The ends of rods 853 near the vertical center of turntable 2 5 are fixedly connected to adjacent inserts 86. Guide grooves 856 are provided on the outer sides of slide rods 853. The interiors of hollow rods 852 are slidably connected to adjacent guide grooves 856 via guide strips. The control assembly 87 includes studs 871, knobs 872, and bellows 873. Studs 871 are rotatably connected to the interior of slip rings 81 via sealed bearings. Turntable 1 4 and turn ring 1 6 are threadedly connected to adjacent studs 871 via their own threaded grooves. A knob 872 is provided at the end of studs 871 near the vertical center of turntable 2 5. Bellows 873 are provided between turntable 1 4, turn ring 1 6, and adjacent slip rings 81. Bellows 873 are movably sleeved on the outer ends of adjacent studs 871. Both the lower mold base 10 and the upper mold base 12 are equipped with magnetic rings 19. When changing the compression mold of the food-grade plastic bottle cap compression molding machine, the operator rotates the lower knob 872 to drive the corresponding stud 871. During the rotation of the stud 871, through the threaded connection with the turntable 4, the lower sliding ring 81 slides along the outer side of the turntable 5 near the vertical center of the turntable 5. During the sliding of the lower sliding ring 81, through the sliding compression between its own inclined circular groove and the inclined rod body of the corresponding guide rod 82, the lower end of the guide rod 82 slides along the corresponding dovetail groove 83 near the center of the device via the slide block 84. The lower guide rod 82 drives the corresponding insert 86 to move synchronously through the telescopic component 85.This causes the insert 86 to move out of the slots of the corresponding lower mold base 10 and the cavity mold 11, thereby simultaneously releasing the insertion limit between the lower mold base 10 and the cavity mold 11. Then, the operator removes the cavity mold 11 from the corresponding lower mold base 10 and installs the replacement cavity mold 11 into the lower mold base 10 in the same manner. (When changing the mold in the compression molding machine, the microcontroller 2 controls both the lower mold base 10 and the upper mold base 12 to be in their initial positions. In these initial positions, the lower mold bases 10 and the upper mold bases 12 are at the same vertical height, and in these positions, the tension of the spring 855 causes the sliding rod 853 to penetrate to its maximum depth into the corresponding hollow rod 852.) Inside, the inserts 86 on the slide bar 853 are horizontally aligned with the adjacent slots. Through the magnetic attraction of the magnetic ring 19 inside the lower mold base 10, the replacement die 11 is fully inserted into the corresponding lower mold base 10, ensuring that the insertion holes between the lower mold base 10 and the adjacent die 11 are horizontally aligned. Then, the operator rotates the knob 872 in reverse, using the same principle to indirectly move the corresponding inserts 86 away from the center of the device via the guide rod 82. This allows the inserts 86 to engage with the slots between the corresponding die 11 and the lower mold base 10, achieving simultaneous positioning of the replacement die 11. The punch 13 in the upper mold base 12 is moved in the same way. When replacing the punch 13, the magnetic attraction of the magnetic ring 19 prevents the replaced punch 13 from falling out of the corresponding upper die seat 12. During later use, the hollow rod 852 slides against the adjacent slide rod 853, allowing the insert 86 on the slide rod 853 to move vertically synchronously with the vertical movement of the corresponding die 11. During this sliding process, the hollow rod 852 slides through the guide strip and the guide groove 856 of the slide rod 853, preventing relative rotation between the two. After a period of use, the annular seat 851 and its connecting rings are inspected. The connected components are replaced simultaneously (the annular seat 851 is fixed to the corresponding guide rod 82 with screws) to prevent the spring 855 from aging. The exposed end of the stud 871 is sealed and lubricated by a bellows 873, a corrugated structure made of multiple layers of stacked metal sheets. Its working principle is to achieve self-adaptive sealing through elastic deformation to maintain good sealing performance. This device, through a transmission element, can achieve the installation limit of the integral concave mold 11 or integral convex mold 13 in the food-grade plastic bottle cap compression molding machine in one step, eliminating the need for manual release of each limit, thereby improving the speed and convenience of changing the concave and convex molds for food-grade plastic bottle caps.

[0017] The working principle of the food-grade plastic bottle cap compression molding machine provided by this utility model is as follows: When changing the compression mold of the food-grade plastic bottle cap compression molding machine, the operator rotates the lower knob 872 to drive the corresponding stud 871. During the rotation of the stud 871, through the threaded connection with the turntable 4, the lower sliding ring 81 slides along the outer side of the turntable 5 near the vertical center of the turntable 5. During the sliding of the lower sliding ring 81, through the sliding compression between its own inclined circular groove and the inclined rod body of the corresponding guide rod 82, the lower end of the guide rod 82 slides along the corresponding dovetail groove 83 near the center of the device through the slide seat 84. The lower guide rod 82 drives the corresponding insert 8 through the telescopic component 85. 6. Synchronous movement causes the insert 86 to move out of the slots of the corresponding lower mold base 10 and the cavity mold 11, thereby simultaneously releasing the insertion limit between the lower mold base 10 and the cavity mold 11. Then, the operator removes the cavity mold 11 from the corresponding lower mold base 10 and installs the replacement cavity mold 11 into the lower mold base 10 in the same manner. (When changing the mold in the compression molding machine, the single-chip microcomputer 2 controls both the lower mold base 10 and the upper mold base 12 to be in their initial positions. In the initial positions, the lower mold bases 10 and the upper mold bases 12 are at the same vertical height. At this position, the tension of the spring 855 causes the slide rod 853 to penetrate to its maximum depth into the corresponding hollow rod 852, thus maximizing the penetration of the slide rod 853.) All inserts 86 are horizontally aligned with adjacent slots. Through the magnetic attraction of the magnetic ring 19 inside the lower mold base 10, the replacement die 11 is fully inserted into the corresponding lower mold base 10, ensuring that the insertion holes between the lower mold base 10 and the adjacent die 11 are horizontally aligned. Then, the operator rotates the knob 872 in reverse, causing the guide rod 82 on the lower side to indirectly move the corresponding insert 86 away from the center of the device, allowing the insert 86 to engage with the slot between the corresponding die 11 and the lower mold base 10. This achieves simultaneous positioning of the replacement die 11. The punch 13 in the upper mold base 12 is replaced in the same way (when replacing the punch 13, the magnetic attraction of the magnetic ring 19 prevents the replaced punch from being removed). (The mold 13 detaches from the corresponding upper mold base 12). During later use of the device, the hollow rod 852 slides with the adjacent slide rod 853, allowing the insert 86 on the slide rod 853 to move vertically synchronously with the vertical movement of the corresponding die 11. During the sliding process between the hollow rod 852 and the adjacent slide rod 853, the hollow rod 852 slides with the guide groove 856 of the slide rod 853 through the internal guide strip, thus preventing relative rotation between the hollow rod 852 and the adjacent slide rod 853. After the device has been used for a period of time, the annular seat 851 and its connected components should be replaced simultaneously (the annular seat 851 is fixed to the corresponding guide rod 82 with screws) to prevent the spring 855 from aging.The exposed end of the stud 871 is sealed and lubricated by a bellows 873. The bellows 873 is a corrugated structure made of multiple layers of metal sheets. Its working principle is to achieve self-adaptive sealing through elastic deformation to maintain good sealing performance. When using a compression molding machine to compress food-grade plastic bottle caps, there are twelve sets of compression molds inside the device. The microcontroller 2 marks the rightmost compression mold position as station one, the last compression mold position as station two, the leftmost compression mold position as station three, and the frontmost compression mold position as station four. At the same time, the microcontroller 2 marks the vertically adjacent electro-hydraulic actuators 14 and 9 as a group, and each group of electro-hydraulic actuators 14 and 9 is further grouped together. 9. The angles of the circular distribution are sequentially numbered. Microcontroller 2 divides 360 degrees by the total number of compression molds to obtain the rotation angle of turntable 4 at each step, and records it as angle one. Then, microcontroller 2 starts the electric rotary table 3, causing its rotating end to drive turntable 4 to rotate. The electric rotary table 3 rotates via an internal servo motor and worm gear transmission element. Simultaneously, microcontroller 2 activates angle sensor 18. Angle sensor 18 uses a high-performance integrated magnetic sensing element, utilizing the non-contact characteristic of magnetic signal induction to measure the rotation angle of turntable 5 (i.e., turntable 4), and transmits the measurement result to microcontroller 2 as an electrical signal. Microcontroller 2, based on this result and combined with angle one, adjusts the electric rotary table... The operation of turntable 3 is controlled by starting and stopping it, so that turntable 4 stops after rotating by a certain angle each time, and this step is repeated. When turntable 4 stops rotating, the microcontroller 2 obtains the labels of the electro-hydraulic actuators 14 and 9 corresponding to the station. Then, the food-grade plastic bottle cap molding material is transported to the cavity 11 at that position through an external material conveying device. At the same time, the microcontroller 2 obtains the labels of the electro-hydraulic actuators 14 and 9 corresponding to the station. The microcontroller 2 controls the electro-hydraulic actuator 9 with the label to move its extension end to drive the corresponding lower mold base 10 and cavity 11 vertically upward. The cavity 11 is squeezed by the vertically corresponding punch 13, thereby molding the food-grade plastic bottle cap material. During this process, the microcontroller 2... The microcontroller 2, using its own timing unit and combined with the travel distance of the telescopic end of the electro-hydraulic actuator 9 per unit time, precisely controls the travel distance of the telescopic end of the electro-hydraulic actuator 9. Simultaneously, the microcontroller 2 acquires the labels of the electro-hydraulic actuator 14 and electro-hydraulic actuator 9 corresponding to station three at this time. Then, the microcontroller 2 controls the electro-hydraulic actuator 9 corresponding to that label to retract its telescopic end to its initial state, thereby separating the concave mold 11 from the corresponding convex mold 13. At this time, the molded food-grade plastic bottle cap adheres to the convex mold 13 of that station through its internal threads. Simultaneously, the microcontroller 2 acquires the labels of the electro-hydraulic actuator 14 and electro-hydraulic actuator 9 corresponding to station four at this time. Then, the microcontroller 2 controls the electro-hydraulic actuator 14 with that label to move its telescopic end vertically downwards and then reset.The telescopic end of electro-hydraulic actuator 14 moves vertically downwards, causing the corresponding actuator 15 to move downwards synchronously, thereby pushing the molded bottle cap off the punch 13 at that position. The rear end of the feed plate 17 is located in the vertical gap between the punch 13 and the die 11 in station 4. The molded food-grade plastic bottle cap falls into the feed plate 17 and is collected along the inclined surface of the feed plate 17. This step is repeated under the control of the microcontroller 2, thereby realizing the molding operation of food-grade plastic bottle caps. A collector ring is installed inside the device. The collector ring can be divided into two parts: one part is a conductive slip ring, and the other part is a connecting contact point. The conductive slip ring is fixedly sleeved on the turntable 4, while the connecting contact point is laid on the housing of the electric rotary table 3. Electro-hydraulic actuator 9 and electro-hydraulic actuator 14 are both electrically connected to the microcontroller 2 through the collector ring. The collector ring prevents the electro-hydraulic actuator 9 and electro-hydraulic actuator 14 from winding during the rotation of the turntable 4.

[0018] It is worth noting that the microcontroller 2 disclosed in the above embodiments can be an STC89C52, the electric rotary table 3 can be a PT-GD204 high-precision electric rotary table, the electro-hydraulic actuator 9 and the electro-hydraulic actuator 14 can both be DYZW integral straight micro electro-hydraulic actuators, and the angle sensor 18 can be an HSM22M multi-turn non-contact magnetic potentiometer. The microcontroller 2 controls the operation of the electric rotary table 3, the electro-hydraulic actuator 9, the angle sensor 18 and the electro-hydraulic actuator 14 using methods commonly used in the prior art.

[0019] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A food-grade plastic bottle cap compression molding machine, comprising a housing (1), wherein a turntable 1 (4) is installed inside the housing (1), a turntable 2 (5) is provided on the upper side of the turntable 1 (4), a rotating ring 1 (6) is provided on the outer side of the turntable 2 (5), a rotating ring 2 (7) is provided on the outer side of the turntable 1 (4), and a ring-shaped lower mold base (10) is installed on the outer side of the rotating ring 2 (7), wherein a cavity mold (11) is inserted into the upper end of each of the lower mold bases (10), and a ring-shaped upper mold base (12) is provided on the lower side of the rotating ring 1 (6), wherein a punch mold (13) is inserted into the lower end of each of the upper mold bases (12), characterized in that: It also includes a locking mechanism (8); Locking mechanism (8): It includes a slip ring (81), a guide rod (82), a dovetail groove (83), a slide block (84), a telescopic component (85), a plug (86), and an adjustment component (87). The slip ring (81) is vertically and symmetrically slidably connected to the outside of the turntable two (5). The upper surface of the turntable one (4) and the lower surface of the turntable one (6) are both provided with uniformly distributed dovetail grooves (83). The slide block (84) is slidably connected inside the dovetail groove (83). The slide block (84) is close to the vertical center of the turntable two (5). One end is provided with a guide rod (82), and the guide rod (82) is slidably connected to the inclined circular groove opened on the adjacent slip ring (81). The end of the guide rod (82) near the vertical center of the turntable (5) is provided with a plug (86) through the telescopic component (85). The lower mold base (10), the cavity mold (11), the upper mold base (12) and the punch (13) are all provided with slots. The plug (86) is inserted into the adjacent slot. The turntable (4) and the turn ring (6) are provided with an adjustment component (87) between them and the adjacent slip ring (81).

2. The food-grade plastic bottle cap compression molding machine according to claim 1, characterized in that: It also includes a microcontroller (2), which is located outside the housing (1), and the input terminal of the microcontroller (2) is electrically connected to an external power supply.

3. The food-grade plastic bottle cap compression molding machine according to claim 2, characterized in that: The bottom wall of the outer shell (1) is provided with an electric rotary table (3). The input end of the electric rotary table (3) is electrically connected to the output end of the microcontroller (2). The rotating end of the electric rotary table (3) is fixedly connected to the lower side of the turntable (4). The top wall of the outer shell (1) is provided with an angle sensor (18) through a fixed rod. The detection end of the angle sensor (18) is fixedly connected to the upper center of the angle sensor (18). The angle sensor (18) is bidirectionally electrically connected to the microcontroller (2).

4. The food-grade plastic bottle cap compression molding machine according to claim 1, characterized in that: The telescopic assembly (85) includes an annular seat one (851), a hollow rod (852), a sliding rod (853), an annular seat two (854), a spring (855), and a guide groove (856). The annular seat one (851) is respectively located at one end of the guide rod (82) near the vertical center of the turntable two (5). A hollow rod (852) is provided on the side of the annular seat one (851) near the vertical center of the turntable two (5). The sliding rod (853) is slidably connected inside the hollow rod (852). An annular seat 2 (854) is provided on the outer side. A spring (855) is provided between the annular seat 2 (854) and the vertically adjacent annular seat 1 (851). The spring (855) is movably sleeved on the outer side of the adjacent hollow rod (852). The end of the slide rod (853) near the vertical center of the turntable 2 (5) is fixedly connected to the adjacent insert (86). The outer side of the slide rod (853) is provided with a guide groove (856). The interior of the hollow rod (852) is slidably connected to the adjacent guide groove (856) through a guide strip.

5. The food-grade plastic bottle cap compression molding machine according to claim 1, characterized in that: The control component (87) includes studs (871), knobs (872) and bellows (873). The studs (871) are rotatably connected to the inside of the slip ring (81) through a sealed bearing. The turntable (4) and the ring (6) are threadedly connected to the adjacent studs (871) through their own threaded grooves. The studs (871) are provided with knobs (872) at the end near the vertical center of the turntable (5). Bellows (873) are provided between the turntable (4) and the ring (6) and the adjacent slip ring (81). The bellows (873) are movably sleeved on the outer end of the adjacent studs (871).

6. The food-grade plastic bottle cap compression molding machine according to claim 2, characterized in that: The lower side of the rotating ring 2 (7) is provided with a ring-shaped electro-hydraulic push rod 1 (9) evenly distributed. The telescopic ends of the electro-hydraulic push rod 1 (9) are fixedly connected to the lower side of the vertically adjacent lower mold base (10). The upper side of the rotating ring 1 (6) is provided with a ring-shaped electro-hydraulic push rod 2 (14) evenly distributed. The upper mold base (12) and the adjacent punch (13) are in sliding contact with push rods (15). The telescopic ends of the electro-hydraulic push rod 2 (14) are fixedly connected to the adjacent push rods (15). The input ends of the electro-hydraulic push rod 2 (14) and the electro-hydraulic push rod 1 (9) are electrically connected to the output end of the microcontroller (2).

7. The food-grade plastic bottle cap compression molding machine according to claim 1, characterized in that: The front wall of the outer shell (1) is provided with a feeding plate (17), and the right wall of the outer shell (1) is provided with a feeding pipe (16).

8. The food-grade plastic bottle cap compression molding machine according to claim 1, characterized in that: Both the lower mold base (10) and the upper mold base (12) are equipped with magnetic rings (19).

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