Rotational molding machine based on intelligent control and use method

Abstract

The invention relates to the technical field of rotational molding machines, in particular to a rotational molding machine based on intelligent control and a use method. A rotational molding machine based on intelligent control comprises a first connecting block, a connecting frame, a lower mold, an upper mold, a second connecting block, screws and the like. The end part of the transmission rod is fixedly connected with a connecting block I; the two ends of the first connecting block are each rotationally connected with a connecting frame through a DD motor. A plurality of lower dies are fixedly connected to each connecting frame; an upper die is inserted into each lower die; each lower die is slidably connected with a second connecting block, and the second connecting blocks are rotatably connected with the corresponding upper dies; a plurality of screws are arranged on the inner side of each upper die in a penetrating mode, and the screws are connected with the corresponding lower dies in a screwed mode. The upper mold can be overturned to the front side of the lower mold around the second connecting block after being opened, the upper mold does not need to be manually and frequently carried, the labor intensity of workers is reduced, the efficiency is improved, meanwhile, the first spring assists the workers in opening and closing the upper mold, and the operation difficulty of opening and closing the mold is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of rotational molding machines. More specifically, the present invention relates to a rotational molding machine based on intelligent control and a usage method thereof. Background Art

[0002] The rotational molding machine rotates and heats continuously, so that the plastic raw materials in the mold are gradually and evenly coated, melted and adhered to the entire surface of the mold cavity under the action of gravity and heat energy to form the required shape. However, since multiple molds are usually provided on the rotational molding machine and all the molds carry out rotational molding processing operations simultaneously, after the rotational molding is completed, an operator removes the upper mold of each mold manually, then takes out the rotationally molded parts in the lower mold, then pours the raw materials into the lower mold, then fixes the upper mold back to its original position, and then performs the next batch of rotational molding operations. In this process, the operator needs to carry the heavy upper mold frequently, resulting in high working intensity.

[0003] In summary, the present application proposes a rotational molding machine based on intelligent control and a usage method thereof to improve the above-mentioned technical problems. Summary of the Invention

[0004] In order to overcome the disadvantages that in the process of using the existing rotational molding machine, an operator needs to carry the heavy upper mold frequently, resulting in high working intensity and low efficiency, the present invention provides a rotational molding machine based on intelligent control and a usage method thereof. Technical Solution

[0005] A rotational molding machine based on intelligent control includes a machine platform and a transmission rod; an intelligent control module and a control panel are carried inside the machine platform; the transmission rod is rotatably connected to the machine platform; a driver is arranged inside the machine platform, and the driver is used to drive the transmission rod to rotate; it further includes a first connecting block, a connecting frame, a lower mold, an upper mold, a second connecting block and a screw; the end of the transmission rod is fixedly connected with the first connecting block; both ends of the first connecting block are rotatably connected with a connecting frame through a DD motor; a plurality of lower molds are fixedly connected to each connecting frame; an upper mold is inserted into each lower mold; a second connecting block is slidably connected to each lower mold, and the second connecting block is rotatably connected with the corresponding upper mold; a plurality of screws are inserted through the inner side of each upper mold, and the screws are screwed with the corresponding lower mold.

[0006] Further, in the above-mentioned rotational molding machine based on intelligent control, it further includes a first spring and a supporting block; a plurality of first springs are fixedly connected between each second connecting block and the corresponding lower mold; a supporting block is slidably connected to each lower mold, the supporting block and the second connecting block are arranged opposite to each other on the upper layer of the lower mold, and the supporting block contacts with the corresponding upper mold; a plurality of first springs are also fixedly connected between the supporting block and the corresponding lower mold.

[0007] Further explanation: In the above-mentioned rotational molding machine based on intelligent control, there is also an auxiliary component, which includes a first round rod and a second spring; a first round rod is slidably connected to each lower mold, and the first round rod is inserted into the corresponding second connecting block; a second spring is sleeved on each first round rod, one end of the second spring is fixedly connected to the corresponding first round rod, and the other end of the second spring is fixedly connected to the corresponding lower mold.

[0008] Further explanation: In the above-mentioned rotational molding machine based on intelligent control, there is also a limiting block; several limiting blocks are connected to each upper mold, and the limiting blocks are located above the corresponding screws.

[0009] Further explanation: In the above-mentioned rotational molding machine based on intelligent control, there is also a fixing component, which includes a third connecting block, a second round rod, a dialing block, a third spring and a fixing block; several third connecting blocks are fixedly connected to each connecting frame; a second round rod is slidably connected to each third connecting block; a dialing block is fixedly connected to each second round rod; a third spring is sleeved on each second round rod, one end of the third spring is fixedly connected to the corresponding third connecting block, and the other end of the third spring is fixedly connected to the corresponding dialing block; a fixing block is fixedly connected to each upper mold, and the fixing block is aligned with the corresponding second round rod.

[0010] Further explanation: In the above-mentioned rotational molding machine based on intelligent control, there is also a rubber ring; several rubber rings are fixedly connected to each upper mold, and the rubber rings are located above the corresponding screws.

[0011] Further explanation: In the above-mentioned rotational molding machine based on intelligent control, there is also a reinforcement component, which includes a movable plate and a fourth spring; a movable plate is slidably connected to each upper mold; several fourth springs are fixedly connected to each movable plate, and the fourth springs are fixedly connected to the corresponding upper mold; a convex part is provided on each movable plate, and the convex part is located outside the upper mold; an inclined surface part is provided on each second connecting block; a first cavity is formed between each movable plate and the corresponding upper mold; several channels are opened on each upper mold, and the channels are communicated with the corresponding first cavity; a second cavity is formed between each rubber ring and the corresponding upper mold, and the second cavity is communicated with the corresponding channel.

[0012] Further explanation: In the above-mentioned rotational molding machine based on intelligent control, a chamfer is provided at the lower part of the screw.

[0013] Further explanation: In the above-mentioned rotational molding machine based on intelligent control, the limiting block is detachably connected to the upper mold.

[0014] A method for using a rotational molding machine based on intelligent control includes the following steps: Step 1: Open the mold. Manually use an external tool to unscrew the screw to stop fixing the upper mold, then manually drive the upper mold to move upward to make the upper mold away from the lower mold, and then drive the upper mold to flip forward. Step 2: Feeding. Manually pour the raw materials into the lower mold. Step 3: Mold closing. Manually flip the upper mold back to the horizontal state, then drive the upper mold to move downward so that the lower part of the upper mold is inserted into the inner side of the lower mold. Then screw the screws into the lower mold to fix the upper mold on the lower mold. Step 4: Rotational molding. Through the cooperation of the driver in the machine and the DD motors at both ends of the connecting block 1, drive the lower mold and the upper mold to move, so that the raw materials tumble and form inside the lower mold and the upper mold to obtain the rotationally molded parts. Step 5: Unloading. Repeat Step 1 to open the upper mold, and then take out the rotationally molded parts in the lower mold. Beneficial effects

[0015] First, after the upper mold is opened, it can be flipped to the front side of the lower mold around the connecting block 2, eliminating the need for manual frequent handling of the upper mold, reducing the labor intensity, and being conducive to improving efficiency. At the same time, with the assistance of the first spring, manual mold opening and closing operations of the upper mold are facilitated, which is conducive to reducing the operation difficulty of mold opening and closing. Second, the round rod 1 is used to assist in fixing the upper mold and the connecting block 2, enabling manual screw tightening operations without continuously applying downward pressure to the lower mold, which is conducive to improving convenience. At the same time, the round rod 1 can also be used to support the connecting block 2 to ensure that the connecting block 2 can be stably located at a high position, avoiding sliding, so that during the subsequent flipping and closing process of the upper mold, the convex part of the upper mold can stably move to directly above the lower mold, avoiding interference. Third, the screw is fixed inside the upper mold through the rubber ring. During the mold closing process of the upper mold, the screw no longer undergoes relative friction with the lower mold, significantly reducing the wear of the screw end and the thread opening of the lower mold, which is conducive to improving the service life. At the same time, the air in the cavity 1 is squeezed into the cavity 2 through the movable plate, causing the rubber ring to expand and fit tightly with the screw, increasing the locking force of the rubber ring on the screw and preventing the screw from detaching from the rubber ring due to vibration, which is conducive to improving stability. Description of the drawings

[0016] Figure 1 Shows the structural schematic diagram of the rotational molding machine based on intelligent control of the present invention; Figure 2 Shows the front view of the rotational molding machine based on intelligent control of the present invention; Figure 3 Shows the installation position schematic diagram of the fixing component of the present invention; Figure 4 Shows the cross-sectional view of the lower mold and the upper mold of the present invention; Figure 5 Shows the structural schematic diagram of the fixing component of the present invention; Figure 6 Shows the structural schematic diagram of the auxiliary component of the present invention; Figure 7Shows the structural schematic diagram of the movable plate of the present invention; Figure 8 Shows the structural schematic diagram of the rubber ring of the present invention; Figure 9 Shows the state diagram after the upper mold of the present invention is opened.

[0017] In the above figures: 1 - machine base, 2 - transmission rod, 3 - first connecting block, 4 - connecting frame, 5 - lower mold, 6 - upper mold, 7 - second connecting block, 8 - screw, 201 - first spring, 202 - first round rod, 203 - second spring, 204 - limiting block, 205 - third connecting block, 206 - second round rod, 207 - dialing block, 208 - third spring, 209 - rubber ring, 2010 - movable plate, 2011 - fourth spring, 2012 - fixed block, 2013 - support block, 91 - protruding part, 92 - inclined surface part, 93 - first cavity, 94 - channel, 95 - second cavity. Detailed implementation manners

[0018] The technical solution of the present invention will be further described below with reference to the accompanying drawings. Embodiment 1

[0019] A rotational molding machine based on intelligent control, as Figures 1 - 6 shown, includes a machine base 1 and a transmission rod 2; an intelligent control module and a control panel are carried inside the machine base 1, and the intelligent control module is composed of electronic structures such as a signal transmitter, a signal receiver, and a responder; a transmission rod 2 is rotatably connected to the machine base 1, and the transmission rod 2 is made of alloy material; a driver is arranged inside the machine base 1, and the driver can be a servo motor, a brushless motor, a direct drive motor, etc., and the driver is used to drive the transmission rod 2 to rotate; it also includes a first connecting block 3, a connecting frame 4, a lower mold 5, an upper mold 6, a second connecting block 7, and a screw 8; the end of the transmission rod 2 is bolted with a first connecting block 3; both the upper end and the lower end of the first connecting block 3 are rotatably connected with a connecting frame 4 through a DD motor, and the connecting frame 4 is made of alloy material; eight lower molds 5 are bolted on each connecting frame 4; an upper mold 6 is inserted into each lower mold 5; a second connecting block 7 is slidably connected to each lower mold 5, and the second connecting block 7 is rotatably connected to the corresponding upper mold 6; four screws 8 are inserted through the inside of each upper mold 6, and the screws 8 are screwed with the corresponding lower mold 5.

[0020] It also includes a first spring 201 and a support block 2013; three first springs 201 are fixedly connected between each second connecting block 7 and the corresponding lower mold 5; a support block 2013 is slidably connected to each lower mold 5, and the support block 2013 and the second connecting block 7 are oppositely arranged on the upper layer of the lower mold 5, and the support block 2013 contacts the corresponding upper mold 6; three first springs 201 are also fixedly connected between the support block 2013 and the corresponding lower mold 5.

[0021] It further includes an auxiliary component, and the auxiliary component includes a first round rod 202 and a second spring 203; a first round rod 202 is slidably connected to each lower die 5, and the first round rod 202 is inserted into the corresponding second connecting block 7 to fix the second connecting block 7 through the first round rod 202; a second spring 203 is sleeved on each first round rod 202, one end of the second spring 203 is fixedly connected to the corresponding first round rod 202, and the other end of the second spring 203 is fixedly connected to the corresponding lower die 5.

[0022] First, a heater and a cooler are installed on the connecting frame 4, and an external workbench is arranged in front of the connecting frame 4. An operator stands on the external workbench and performs an operation of opening the cover of the upper die 6 at the frontmost upper side of the connecting frame 4. During this process, the operator uses a screwdriver to screw out the four screws 8, and then drives the upper die 6 to move upward, so that the lower part of the upper die 6 moves away from the inner side of the lower die 5. The upper die 6 drives the second connecting block 7 to move upward, and then rotates the upper die 6 forward, so that the upper die 6 rotates forward around the rotating shaft on the second connecting block 7, and the end of the upper die 6 away from the second connecting block 7 leans against the connecting frame 4. Then, start the DD motor on the first connecting block 3, drive the upper connecting frame 4 above to rotate by 45 degrees through the DD motor, and the connecting frame 4 drives the lower die 5 and the upper die 6 to move, so that the next upper die 6 moves in front of the operator. Then, the operator repeats the above operation to open the next upper die 6, and so on, to open all the eight upper dies 6 above. Here, it should be noted that after opening the upper die 6, the operator pours the raw material into the corresponding lower die 5. Optionally, all the eight upper dies 6 above can be opened first and then the raw material pouring operation is carried out in sequence, or the raw material can be directly poured after opening one upper die 6. Note that whether all the eight upper dies 6 above are opened first and then the raw material pouring operation is carried out in sequence, or the raw material is directly poured after opening one upper die 6, after the raw material is poured into the lower die 5, the operator flips the upper die 6 backward to the horizontal state and makes it located above the lower die 5 again. Then, the operator pushes the upper die 6 downward to make the lower part of the upper die 6 insert into the inner side of the lower die 5. The upper die 6 drives the second connecting block 7 to slide downward on the lower die 5. Then, the operator passes the screw 8 through the upper die 6 from top to bottom, and then uses a screwdriver to screw the screw 8 into the lower die 5, so as to lock the upper die 6 on the lower die 5.

[0023] After the eight upper molds 6 above are opened, raw materials are poured in, and the eight upper molds 6 above are closed again, the drive rod 2 is driven by a driver on the machine 1 (the driver can be any one of the existing mature technologies, such as a servo motor, a brushless motor, and a direct drive motor, etc.) to rotate 180 degrees. The drive rod 2 drives the connecting frame 4, the lower mold 5, and the upper mold 6 to rotate through the first connecting block 3, so that the upper and lower sides of the connecting frame 4, the lower mold 5, and the upper mold 6 are swapped. Then, the above operations are repeated to perform the feeding operation on the remaining lower mold 5 and upper mold 6. Then, the drive rod 2 is driven to rotate by the driver on the machine 1, and two DD motors on the first connecting block 3 drive the two connecting frames 4 to rotate, so as to fully stir the raw materials in the lower mold 5. During this process, the lower mold 5 and the upper mold 6 are heated by the heater on the connecting frame 4, so that the raw materials are rotationally molded on the inner sides of the lower mold 5 and the upper mold 6. Then, the lower mold 5 and the upper mold 6 are cooled by the cooler on the connecting frame 4 to obtain the rotational molded parts. Then, the above operations are repeated, the upper mold 6 is opened, and then the rotational molded parts are taken out. When in use, after the upper mold 6 is opened, it can be flipped to the front side of the lower mold 5 around the second connecting block 7, without manual frequent handling of the upper mold 6, reducing the labor intensity and being beneficial to improving the efficiency; it should be noted here that the machine 1 is equipped with an intelligent control module. The operator sets specific parameters (heating temperature, cooling temperature, rotation speed, time, etc.) through the control panel, and then the intelligent control module intelligently regulates the power and running time of the driver and the DD motor, intelligently regulates the output power and running time of the heater, and intelligently regulates the output power and running time of the cooler; note that the intelligent control module is specifically composed of electronic structures such as a signal transmitter, a signal receiver, and a responder. The driver, the DD motor, the heater, and the cooler are all integrated with a signal receiver and a responder to receive the parameters set by the control panel and respond to the trigger.

[0024] The part of the upper die 6 inserted inside the lower die 5 is called the boss part. When the upper die 6 is opened and abuts against the connecting frame 4, the second connecting block 7 slides downward under the action of gravity and returns to its original position. When the upper die 6 is switched from the open state to the closed state, if the upper die 6 is directly flipped upward manually, the boss part of the upper die 6 will hit the upper side of the lower die 5 and cannot be inserted inside the lower die 5. As a result, in the final stage of flipping the upper die 6, the operator still needs to lift the upper die 6 upward to align the boss part of the upper die 6 with the inside of the lower die 5 before the die closing operation can be carried out. The upper die 6 is integrally formed of cast iron and is heavy, increasing the difficulty of die closing. Therefore, a first spring 201 is provided on the lower die 5. The first spring 201 is initially in a compressed state. After the operator unscrews the screw 8, the first spring 201 rebounds and drives the second connecting block 7 and the support block 2013 to move upward. The second connecting block 7 and the support block 2013 drive the upper die 6 to move upward, so that the boss part of the upper die 6 automatically moves away from the inside of the lower die 5. Then the operator rotates the upper die 6 to open it. During this process, there is no need for the operator to lift the boss part of the upper die 6 upward to disengage it from the inside of the lower die 5, reducing the operation difficulty. When the upper die 6 is closed, the first spring 201 drives the second connecting block 7 to move upward through its elastic force, so that the rotation center axis of the upper die 6 is at a high position. The operator drives the upper die 6 to move backward, and the upper die 6 rotates around the second connecting block 7 at the high position, so that the upper die 6 can be directly rotated above the lower die 5, and the boss part of the upper die 6 will not interfere with the upper side of the lower die 5. That is, in the final stage of flipping the upper die 6 back to the horizontal state, there is no need for the operator to actively adjust the upper die 6, which is beneficial to reducing the operation difficulty. Then the operator pushes the upper die 6 downward to carry out the die closing operation. When in use, the first spring 201 assists the operator in carrying out the die opening and die closing operations of the upper die 6, which is beneficial to reducing the operation difficulty of die opening and die closing.

[0025] Manually push the upper die 6 downward. After the upper die 6 moves downward and inserts into the inner side of the lower die 5, due to the elastic force of the first spring 201, the operator needs to continuously apply a downward pressure to the lower die 5 to keep it stable in order to perform the operation of tightening the screw 8. Therefore, when opening the die, after unscrewing the screw 8, the operator pulls the first round rod 202 and stretches the second spring 203, so that the first round rod 202 moves away from the second connecting block 7, that is, the locking of the second connecting block 7 is stopped. At this time, the first spring 201 rebounds and drives the second connecting block 7 to move upward, and the second connecting block 7 drives the upper die 6 to move upward for die opening operation. Then the operator stops pulling the first round rod 202, and the second spring 203 squeezes the first round rod 202 to the side of the second connecting block 7 through elastic force. When the second connecting block 7 moves above the first round rod 202, the second spring 203 drives the first round rod 202 to move through elastic force, so that the end of the first round rod 202 moves to the lower side of the second connecting block 7. When closing the die, before manually pushing the upper die 6 downward, the operator pulls the first round rod 202 to move, so that the end of the first round rod 202 moves away from the lower side of the second connecting block 7. Then push the upper die 6 and the second connecting block 7 downward. When the second connecting block 7 moves back to its original position, the second spring 203 rebounds and drives the first round rod 202 to move back to its original position, so that the first round rod 202 fixes the second connecting block 7 again. At this time, the operator does not need to continuously apply a downward pressure to the lower die 5 to perform the operation of tightening the screw 8. When in use, the first round rod 202 is used to assist in fixing the upper die 6 and the second connecting block 7, so that the operator does not need to continuously apply a downward pressure to the lower die 5 to perform the operation of tightening the screw 8, which is beneficial to improving the convenience.

[0026] Before the upper die 6 is closed, although the first spring 201 can support the second connecting block 7 through elastic force, due to the movable nature of the first spring 201, that is, during the closing process of the upper die 6, the weight of the upper die 6 will be superimposed on the second connecting block 7, resulting in the situation that the second connecting block 7 moves downward and the first spring 201 is compressed during the closing process of the upper die 6, that is, there is a situation where the height that the first spring 201 supports the second connecting block 7 is not enough. If the height that the first spring 201 supports the second connecting block 7 is not enough, during the process of the upper die 6 flipping and closing, the convex part of the upper die 6 will still hit the upper side of the lower die 5. Therefore, as described in the above working principle, after the upper die 6 is opened, the end of the first round rod 202 moves to the lower side of the second connecting block 7. At this time, the second connecting block 7 is supported by the first round rod 202 to ensure that the second connecting block 7 can be stably located at a high position and avoid the phenomenon of sliding downward. Thus, during the subsequent process of the upper die 6 flipping and closing, the convex part of the upper die 6 can stably move to directly above the lower die 5 to avoid interference phenomenon. Embodiment 2

[0027] On the basis of Embodiment 1, as Figures 3 - 8 shown, it further includes a limit block 204; four limit blocks 204 are connected to each upper die 6, and the limit blocks 204 are located above the corresponding screws 8 to block and limit the screws 8.

[0028] It further includes a fixing component, and the fixing component includes a connecting block III 205, a round rod II 206, a shifting block 207, a spring III 208 and a fixing block 2012; eight connecting blocks III 205 are welded on each connecting frame 4; a round rod II 206 is slidably connected to each connecting block III 205; a shifting block 207 is fixedly connected to each round rod II 206, and the shifting block 207 can be made of metal or plastic; a spring III 208 is sleeved on each round rod II 206, one end of the spring III 208 is fixedly connected to the corresponding connecting block III 205, and the other end of the spring III 208 is fixedly connected to the corresponding shifting block 207; a fixing block 2012 is fixedly connected to each upper die 6, the fixing block 2012 is aligned with the corresponding round rod II 206, and the round rod II 206 can be inserted into the fixing block 2012 to fix the opened upper die 6.

[0029] A limiting block 204 is added to the upper die 6. After manually unscrewing the screw 8 from the lower die 5, as Figure 8 shown, the upper side of the head of the screw 8 is blocked and limited by the limiting block 204, while the lower side of the head of the screw 8 is limited by the lower die 5, so that the screw 8 can be limited inside the upper die 6, that is, during the processes of mold opening, material taking, material loading and mold closing, there is no need for manual to take out and store the screw 8, thus increasing the convenience.

[0030] When the upper die 6 is opened, the upper die 6 drives the fixing block 2012 to move together. At this time, manually pull the shifting block 207 to move, the shifting block 207 drives the round rod II 206 to move, and stretches the spring III 208, so that the end of the round rod II 206 moves away from the movement path of the fixing block 2012 I. When the fixing hole on the fixing block 2012 I is aligned with the round rod II 206, stop pulling the shifting block 207 manually. The spring III 208 rebounds and drives the round rod II 206 to move back to the original position, so that the round rod II 206 is inserted into the fixing block 2012 I to lock the upper die 6 and keep it in the opened state. After all the upper dies 6 above are opened, at this time, the material loading operation is not directly carried out, but the driver in the machine table 1 is started, and the driver drives the transmission rod 2 and the parts thereon to rotate, so that the lower die 5 and the upper die 6 below move to the upper side, and then continue to carry out the operation of opening the upper die 6. During the rotation process, the opened upper die 6 has been locked by the round rod II 206 and will not shake randomly. In this way, after all the upper dies 6 are opened manually, the material loading operation can be carried out to provide more operation methods for manual selection. Embodiment 3

[0031] On the basis of Embodiment 2, as Figure 7 and Figure 9As shown, it further includes a rubber ring 209; four rubber rings 209 are fixedly connected to each upper mold 6, and the rubber ring 209 is located above the corresponding screw 8. After the screw 8 is unscrewed, it is in close contact with the rubber ring 209. At this time, the rubber ring 209 fixes the screw 8 through friction.

[0032] It further includes a reinforcement component, and the reinforcement component includes a movable plate 2010 and a fourth spring 2011; a movable plate 2010 is slidably connected to each upper mold 6; four fourth springs 2011 are fixedly connected to each movable plate 2010, and the fourth spring 2011 is fixedly connected to the corresponding upper mold 6; a convex portion 91 is provided on each movable plate 2010, and the convex portion 91 is located outside the upper mold 6; an inclined surface portion 92 is provided on each second connecting block 7; a first cavity 93 is formed between each movable plate 2010 and the corresponding upper mold 6; four channels 94 are opened on each upper mold 6, and the channel 94 communicates with the corresponding first cavity 93; a second cavity 95 is formed between each rubber ring 209 and the corresponding upper mold 6, and the second cavity 95 communicates with the corresponding channel 94. The movable plate 2010 can squeeze the air in the first cavity 93, so that the air in the first cavity 93 flows into the second cavity 95 through the channel 94.

[0033] A chamfer is provided at the lower part of the screw 8 to make it easier for the screw 8 to be inserted into the lower mold 5.

[0034] The limit block 204 is detachably connected to the upper mold 6. During maintenance, the limit block 204 can be removed to replace the screw 8 and the rubber ring 209.

[0035] During the process of flipping the upper mold 6 from the open state to the closed state, when the upper mold 6 is about to be flipped to the horizontal state, the screw 8 contacts the lower mold 5 before the upper mold 6. During the continuous flipping of the upper mold 6, the lower end of the screw 8 slides relative to the threaded opening of the lower mold 5 in an inclined manner. Over time, the end of the screw 8 and the threaded opening of the lower mold 5 are prone to wear, resulting in a decrease in lifespan. Therefore, a rubber ring 209 is added inside the upper mold 6. After the screw 8 is unscrewed upward, the upper end of the screw 8 moves to the inside of the rubber ring 209, and the lower end of the screw 8 is located inside the upper mold 6. At this time, the rubber ring 209 fixes the screw 8 through friction, so that the screw 8 remains inside the upper mold 6. When the upper mold 6 is flipped back to the horizontal state later, the screw 8 does not contact the lower mold 5, thus avoiding wear. During use, the screw 8 is fixed inside the upper mold 6 through the rubber ring 209, so that during the mold closing process of the upper mold 6, the screw 8 no longer undergoes relative friction with the lower mold 5, greatly reducing the wear of the end of the screw 8 and the threaded opening of the lower mold 5, which is beneficial to improving the lifespan.

[0036] As Figure 9As shown, after the upper mold 6 is fully opened, the initial upper side surface of the upper mold 6 will abut against the inclined surface portion 92, so that the convex portion 91 of the movable plate 2010 abuts against the inclined surface portion 92. During this process, the second connecting block 7 blocks and limits the movable plate 2010, forcing the movable plate 2010 to slide inside the upper mold 6 and compress the fourth spring 2011. The movable plate 2010 squeezes the air in the first cavity 93, causing part of the air to flow into the second cavity 95 through the channel 94, so that the rubber ring 209 expands and fits tightly with the screw 8, thereby locking the screw 8, preventing the vibration generated when the rotational molding machine rotates from shaking the screw 8 away from the rubber ring 209, which is beneficial to improving stability. During use, the air in the first cavity 93 is squeezed into the second cavity 95 through the movable plate 2010, causing the rubber ring 209 to expand and fit tightly with the screw 8, improving the locking force of the rubber ring 209 on the screw 8 and preventing the screw 8 from detaching from the rubber ring 209 due to vibration, which is beneficial to improving stability.

[0037] A method for using a rotational molding machine based on intelligent control includes the following steps: Step 1: Open the mold. Manually use an external tool to unscrew the screw 8 to stop fixing the upper mold 6, then manually drive the upper mold 6 to move upward to make the upper mold 6 away from the lower mold 5, and then drive the upper mold 6 to flip forward; Step 2: Feed the material. Manually pour the raw material into the lower mold 5; Step 3: Close the mold. Manually flip the upper mold 6 back to the horizontal state, then drive the upper mold 6 to move downward to insert the lower part of the upper mold 6 inside the lower mold 5, and then screw the screw 8 into the lower mold 5 to fix the upper mold 6 on the lower mold 5; Step 4: Rotational molding. Through the cooperation of the driver in the machine table 1 and the DD motors at both ends of the first connecting block 3, drive the lower mold 5 and the upper mold 6 to move, so that the raw material tumbles and forms inside the lower mold 5 and the upper mold 6 to obtain a rotational molded product; Step 5: Discharge the material. Repeat Step 1 to open the upper mold 6, and then take out the rotational molded product in the lower mold 5.

[0038] Although the present invention has been described with reference to exemplary embodiments, it should be understood that the present invention is not limited to the disclosed exemplary embodiments. The scope of the following claims should be given the broadest interpretation so as to cover all modifications and equivalent structures and functions.

Claims

1. A rotational molding machine based on intelligent control, comprising a machine platform (1) and a transmission rod (2); the machine platform (1) is equipped with an intelligent control module and a control panel; the machine platform (1) is rotatably connected to the transmission rod (2); a driver is provided in the machine platform (1), and the driver is used to drive the transmission rod (2) to rotate; the characteristics are: The invention also comprises a connecting block 1 (3), a connecting frame (4), a lower die (5), an upper die (6), a connecting block 2 (7) and screws (8); the end of the transmission rod (2) is fixedly connected to the connecting block 1 (3); both ends of the connecting block 1 (3) are rotatably connected to a connecting frame (4) via a DD motor; each connecting frame (4) is fixedly connected to a plurality of lower dies (5); each lower die (5) is plugged with an upper die (6); each lower die (5) is slidably connected to a connecting block 2 (7), and the connecting block 2 (7) is rotatably connected to the corresponding upper die (6); a plurality of screws (8) are penetrated on the inner side of each upper die (6), and the screws (8) are screwed to the corresponding lower die (5).

2. A rotomolding machine based on intelligent control according to claim 1, characterized in that: It also includes a spring one (201) and a support block (2013); a plurality of springs one (201) are fixedly connected between each connecting block two (7) and the corresponding lower die (5); a support block (2013) is slidably connected to each lower die (5); the support block (213) and the connecting block two (7) are arranged opposite to each other on the upper layer of the lower die (5), and the support block (213) is in contact with the corresponding upper die (6); and a plurality of springs one (201) are also fixedly connected between the support block (2013) and the corresponding lower die (5).

3. A rotomolding machine based on intelligent control according to claim 2, characterized in that: The invention also comprises an auxiliary component, which comprises a round rod one (202) and a spring two (203); each lower die (5) is slidably connected to a round rod one (202), and the round rod one (202) is plugged into a corresponding connecting block two (7); each round rod one (202) is sleeved with a spring two (203), one end of the spring two (203) is fixedly connected to the corresponding round rod one (202), and the other end of the spring two (203) is fixedly connected to the corresponding lower die (5).

4. A rotomolding machine based on intelligent control according to claim 1, characterized in that: It also includes a limit block (204); each upper mold (6) is connected to a plurality of limit blocks (204), and the limit blocks (204) are located above the corresponding screws (8).

5. A rotomolding machine based on intelligent control according to claim 1, characterized in that: The invention also comprises a fixing assembly, which comprises a connecting block three (205), a round rod two (206), a shifting block (207), a spring three (208) and a fixing block (2012); each connecting frame (4) is fixedly connected to a plurality of connecting blocks three (205); each connecting block three (205) is slidably connected to a round rod two (206); each round rod two (206) is fixedly connected to a shifting block (207); each round rod two (206) is sleeved with a spring three (208), one end of the spring three (208) is fixedly connected to the corresponding connecting block three (205), and the other end of the spring three (208) is fixedly connected to the corresponding shifting block (207); each upper mold (6) is fixedly connected to a fixing block (2012), and the fixing block (2012) is aligned with the corresponding round rod two (206).

6. A rotomolding machine based on intelligent control according to claim 1, characterized in that: It also includes a rubber ring (209); a plurality of rubber rings (209) are fixedly connected to each upper mold (6), and the rubber ring (209) is located above the corresponding screw (8).

7. A rotomolding machine based on intelligent control according to claim 6, characterized in that: The invention also comprises a reinforcement component, which comprises a movable plate (2010) and a spring four (2011); each upper mold (6) is slidably connected to a movable plate (2010); each movable plate (2010) is fixedly connected to a plurality of spring fours (2011), and the spring fours (2011) are fixedly connected to the corresponding upper mold (6); each movable plate (2010) is provided with a protrusion (91), and the protrusion (91) is located outside the upper mold (6); each connecting block two (7) is provided with an inclined portion (92); a cavity one (93) is formed between each movable plate (2010) and the corresponding upper mold (6); each upper mold (6) is provided with a plurality of channels (94), and the channels (94) are connected to the corresponding cavity one (93); each rubber ring (209) is formed with a cavity two (95) and the corresponding upper mold (6), and the cavity two (95) is connected to the corresponding channel (94).

8. A rotomolding machine based on intelligent control according to claim 1, characterized in that: The lower part of the screw (8) is provided with a chamfer.

9. A rotomolding machine based on intelligent control according to claim 4, characterized in that: The limit block (204) is detachably connected to the upper mold (6).

10. A method for using a rotational molding machine based on intelligent control, characterized in that: The method uses a rotational molding machine based on intelligent control as described in claim 9, comprising the following steps: Step 1: Open the mold, manually use an external tool to unscrew the screw (8) so that the screw (8) stops fixing the upper mold (6), and then manually drive the upper mold (6) to move upward so that the upper mold (6) is away from the lower mold (5), and then drive the upper mold (6) to flip forward; Step 2: Loading, manually pouring the raw materials into the lower mold (5); Step 3: Closing the mold, manually turning the upper mold (6) back to a horizontal state, and then driving the upper mold (6) to move downward so that the lower part of the upper mold (6) is inserted into the inner side of the lower mold (5), and then screwing the screw (8) into the lower mold (5) to fix the upper mold (6) on the lower mold (5); Step 4: Roto-molding, through the cooperation of the driver in the machine (1) and the DD motors at both ends of the connecting block (3), the lower mold (5) and the upper mold (6) are driven to move, so that the raw material is rolled inside the lower mold (5) and the upper mold (6) to form a roto-molded part; Step 5: Unloading: Repeat step 1 to open the upper mold (6), and then take out the rotationally molded part in the lower mold (5).

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