Plastic mold heating device
By introducing a scraping component into the plastic mold heating device, the scraping plate adheres to the inner wall of the rotating cylinder to scrape off the attached molten plastic, solving the adhesion problem of plastic particles during the transformation into a molten state, improving utilization and reducing production costs.
Patent Information
- Application Number
- CN202511490217.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-10-17
- Publication Date
- 2025-12-05
- Estimated Expiration
- Not applicable · inactive patent
AI Technical Summary
During the transition of plastic granules from a solid state to a molten state, some of the plastic adheres to the heating channel, resulting in reduced utilization and increased production costs for plastic products.
A plastic mold heating device was designed, including a scraping component. The scraping plate is slidably disposed in the scraping groove. By the scraping plate adhering to the inner wall of the rotating cylinder, the attached molten plastic is scraped off, allowing it to flow back along the processing groove path and finally into the plastic molding machine.
It improves the overall utilization rate of plastics, solves the adhesion problem during the transformation of plastic particles into a molten state, and reduces production costs.
Smart Images
Figure CN121062062A_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The application belongs to the technical field of plastic processing, and particularly relates to a plastic mold heating device. BACKGROUND
[0002] The plastic mold heating assembly is a tool matched with a plastic forming machine in the plastic processing industry to give a plastic product a complete configuration and accurate size. The plastic mold heating assembly sends plastic particles into the plastic forming machine after melting to complete the production of the plastic product. The core structure is that the hollow heating cylinder and the guide rod coaxially arranged together form a spiral heating groove, and the plastic particles are finally flowed into the plastic forming machine to complete the production of the plastic product after being heated and melted in the heating groove.
[0003] However, since the temperature rise of the processing groove hole is realized based on the heating assembly arranged in the heating cylinder, the heat transfer sequence of the processing groove hole is emitted from the heating assembly, transferred to the processing groove hole on the side of the heating cylinder, and finally transferred to the processing groove hole on the side of the rotating cylinder. After the plastic particles are poured into the processing groove hole, the plastic particles are converted from a solid state to a molten state and absorb a large amount of heat. The heat of the processing groove hole on the side of the rotating cylinder decreases due to the lack of timely transmission, and the temperature of the processing groove hole on the side of the rotating cylinder decreases, thereby causing part of the molten plastic to adhere to the inner wall of the rotating cylinder during the conversion of the plastic particles from the solid state to the molten state, which reduces the overall utilization rate of the plastic and increases the production cost of the plastic product. SUMMARY
[0004] To solve the problem that part of the plastic adheres to the heating groove during the conversion of the plastic particles from the solid state to the molten state, thereby reducing the utilization rate of the plastic and increasing the production cost of the plastic product, the application provides a plastic mold heating device.
[0005] The object of the application can be achieved by the following technical scheme. A plastic mold heating device, comprising a rack, a hollow rotating cylinder, a heating cylinder and a heating assembly, the rotating cylinder is vertically arranged on the rack and can rotate, the heating cylinder is coaxially arranged in the rotating cylinder, the heating cylinder is connected with the rack, and the heating assembly is arranged in the heating cylinder, the heating cylinder and the rotating cylinder jointly form a processing groove hole with a spiral shape, and further comprising a scraping assembly, the scraping assembly comprises a scraping plate, the heating cylinder is provided with a scraping groove hole, the scraping plate is slidingly arranged in the scraping groove hole, and the scraping plate can be locked or unlocked with the inner wall of the rotating cylinder.
[0006] As a preferred technical scheme of the present application, the heating cylinder comprises a heating rod and a helical protrusion, the helical protrusion is coaxially sleeved on the outer sidewall of the heating rod, and the scraping groove hole is arranged on the helical protrusion.
[0007] As a preferred technical scheme of the present application, the scraping assembly further comprises a pulling air cylinder, a pulling rod, a pulling chain and a pulling spring, the pulling air cylinder is vertically erected on the top of the heating cylinder, the heating rod is internally hollow, the pulling rod is coaxially arranged in the heating rod, the output end of the pulling air cylinder is connected with the pulling rod, the heating rod is further provided with a communication groove hole, the communication groove hole is respectively connected with the scraping groove hole and the interior of the heating rod, the pulling chain is connected with the pulling rod and the scraping plate through the communication groove hole, the pulling spring is arranged in the scraping groove hole, and the two ends of the pulling spring are respectively connected with the scraping plate and the helical protrusion.
[0008] As a preferred technical scheme of the present application, the scraping assembly further comprises a guide roller, the guide roller is rotatably arranged in the heating rod, and the guide roller is arranged in close contact with the bending position of the pulling chain.
[0009] As a preferred technical scheme of the present application, the heating assembly is arranged in the heating rod.
[0010] As a preferred technical scheme of the present application, one end of the scraping plate close to the rotating cylinder is arranged in an inclined manner, a melting groove hole is arranged in the scraping plate, the melting groove hole is connected with the inclined surface of the inclined end of the scraping plate and forms a melting slot, and the inclined end of the scraping plate can be locked or unlocked to abut against the inner wall of the rotating cylinder.
[0011] As a preferred technical scheme of the present application, a conical rod is internally hollow, the conical rod is coaxially connected with the bottom of the rotating cylinder, an output port is coaxially arranged at the bottom of the conical rod, and the processing groove hole is connected with the output port.
[0012] As a preferred technical scheme of the present application, the heating rod is further provided with a flow groove hole and a connecting groove hole, the flow groove hole is connected with the conical rod, the connecting groove hole is respectively connected with the scraping groove hole and the flow groove hole, the sidewall surface of the scraping plate is further provided with a flow outlet, and the flow outlet is respectively connected with the melting groove hole and the connecting groove hole.
[0013] As a preferred technical scheme of the present application, the bottom of the scraping plate is arranged in an inclined manner, the height of the bottom of the scraping plate gradually decreases along the straight line direction from the melting slot to the flow outlet.
[0014] As a preferred technical scheme of the present application, the air pump assembly comprises an output air pump and a heat-insulating air pipe, the output air pump is arranged on the rack, the top surface of the heating rod is further provided with a gas inlet, the gas inlet and the flow groove hole are in communication with each other, and the two ends of the heat-insulating air pipe are in communication with the output port of the output air pump and the gas inlet, respectively.
[0015] The present application has the following advantages: The present application has the following advantages:When the molten plastic adheres to the inner wall of the rotating cylinder, the scraping plate is extended to abut against the inner wall of the rotating cylinder, and then, with the rotation of the rotating cylinder, the molten plastic adhering to the inner wall of the rotating cylinder is scraped off by the scraping plate, so that the plastic flows along the path of the processing groove hole again, and finally flows into the plastic molding machine to participate in the production of plastic products, thereby improving the overall utilization rate of plastic and solving the problem that during the conversion of plastic particles from a solid state to a molten state, part of the plastic adheres to the processing groove hole, resulting in a decrease in the utilization rate of plastic and an increase in the production cost of plastic products. BRIEF DESCRIPTION OF DRAWINGS
[0016] For the convenience of those skilled in the art, the present application will be further described below with reference to the accompanying drawings.
[0017] Figure 1 FIG. 1 is a general view of a plastic mold heating device according to the present application; Figure 2 FIG. 2 is a front view of a heating cylinder of the plastic mold heating device according to the present application; Figure 3 FIG. 3 is an internal cross-sectional view of the plastic mold heating device according to the present application; Figure 4 FIG. 4 is an internal cross-sectional view of the heating cylinder of the plastic mold heating device according to the present application; Figure 5 FIG. 5 is an enlarged view of A of the present application; Figure 1 Figure 6 FIG. 6 is an enlarged view of B of the present application. Figure 3
[0018] MAIN SYMBOL EXPLANATION In the figure: 1, frame; 2, rotating cylinder; 201, processing slot hole; 3, heating cylinder; 4, heating assembly; 5, scraping assembly; 501, scraping plate; 5011, molten slot hole; 5012, molten slot; 5013, flow outlet; 502, pulling cylinder; 503, pulling rod; 504, pulling chain; 505, pulling spring; 506, guide roller; 6, heating rod; 601, communication slot hole; 602, flow slot hole; 603, connection slot hole; 7, helical protrusion; 701, scraping slot hole; 8, tapered rod; 801, output port; 9, air pump assembly; 901, output air pump; 902, heat insulation air pipe; 10, rotating motor; 11, driving gear; 12, driven gear. DETAILED DESCRIPTION
[0019] In order to further clarify the technical means and effects taken by the present application to achieve the predetermined object of the application, the specific embodiments, structures, features and effects according to the present application are described in detail below in combination with the preferred embodiments and the drawings.
[0020] Please refer to Figures 1-6The embodiment provides a plastic mold heating device which comprises a rack 1, a hollow rotating cylinder 2, a heating cylinder 3 and a heating assembly 4, the rotating cylinder 2 is vertically arranged on the rack 1 in a rotatable mode, the heating cylinder 3 is coaxially arranged in the rotating cylinder 2, the heating cylinder 3 is connected with the rack 1, and the heating assembly 4 is arranged in the heating cylinder 3; the heating cylinder 3 and the rotating cylinder 2 jointly form a processing groove hole 201 with a spiral shape, and the heating assembly 4 is used for heating treatment of the processing groove hole 201; the heating assembly 4 is used for heating plastic particles in the processing groove hole 201 into a molten plastic state, then when the rotating cylinder 2 rotates, the molten plastic is subjected to power on the inner wall of the rotating cylinder 2, so that the molten plastic flows along the path of the processing groove hole 201; however, since the temperature rise of the processing groove hole 201 is realized based on the heating assembly 4 arranged in the heating cylinder 3, therefore the heat transfer sequence of the processing groove hole 201 is emitted from the heating assembly 4, transferred into the processing groove hole 201 on the side of the heating cylinder 3, and finally transferred into the processing groove hole 201 on the side of the rotating cylinder 2; after the plastic particles are poured into the processing groove hole 201, the plastic particles are converted from a solid state into a molten state and absorb a large amount of heat, the heat of the processing groove hole 201 on the side of the rotating cylinder 2 decreases due to the fact that the heat cannot be timely transferred, and the temperature of the processing groove hole 201 on the side of the rotating cylinder 2 decreases, thereby causing part of the molten plastic to adhere to the inner wall of the rotating cylinder 2 during the conversion of the plastic particles into the molten state, which causes the overall utilization rate of the plastic to decrease, thereby increasing the production cost of plastic products, based on this, in order to solve the problem, the scheme further comprises a scraping assembly 5, the scraping assembly 5 comprises a scraping plate 501, the heating cylinder 3 is provided with a scraping groove hole 701, the scraping plate 501 is slidingly arranged in the scraping groove hole 701, and the scraping plate 501 can lock or release the adhering relationship with the inner wall of the rotating cylinder 2; when the molten plastic adheres to the inner wall of the rotating cylinder 2, the scraping plate 501 is extended and abuts against the inner wall of the rotating cylinder 2, then with the rotation of the rotating cylinder 2, the scraping plate 501 scrapes the molten plastic adhered to the inner wall of the rotating cylinder 2, so that the plastic flows along the path of the processing groove hole 201 again, and finally flows into a plastic forming machine to participate in the production of plastic products, thereby improving the overall utilization rate of the plastic, and solving the problem that part of the plastic adheres to the processing groove hole 201 during the conversion of the plastic particles from a solid state into a molten state, which causes the utilization rate of the plastic to decrease, thereby increasing the production cost of plastic products.
[0021] In addition, it is also worth mentioning that when the molten plastic adheres to the inner wall of the rotating cylinder 2, due to the adhesion between the molten plastic of this part and the rotating cylinder 2, at this time the temperature in the processing groove hole 201 is not enough to remove the adhesion between the molten plastic of this part and the rotating cylinder 2, and it is necessary to increase the temperature in the processing groove hole 201, and it is necessary to increase the temperature in the processing groove hole 201 on the side of the rotating cylinder 2 to the specified temperature, which will inevitably cause the temperature of the processing groove hole 201 near the heating cylinder 3 to be higher, and then the molten plastic of the processing groove hole 201 near the heating cylinder 3 will crack, which will affect the quality of the molten plastic; Therefore, the present scheme adopts the scraping plate 501 to scrape the molten plastic adhered to the inner wall of the rotating cylinder 2.
[0022] Specifically, the heating cylinder 3 of the present scheme includes a heating rod 6 and a spiral rib 7, the spiral rib 7 is coaxially sleeved on the outer side wall of the heating rod 6, and the scraping groove hole 701 is arranged on the spiral rib 7; The spiral rib 7 of the present scheme is spiral, when the heating cylinder 3 is coaxially matched with the rotating cylinder 2, the heating rod 6 is coaxially matched with the rotating cylinder 2, and the rotating cylinder 2, the heating rod 6 and the spiral rib 7 jointly form a spiral processing groove hole 201.
[0023] Specifically, the scraping assembly 5 of the present scheme further includes a pulling cylinder 502, a pulling rod 503, a pulling chain 504 and a pulling spring 505, the pulling cylinder 502 is vertically erected on the top of the heating cylinder 3, the inside of the heating rod 6 is hollow, the pulling rod 503 is coaxially arranged in the heating rod 6, the output end of the pulling cylinder 502 is connected with the pulling rod 503, the heating rod 6 is also provided with a communication groove hole 601, the communication groove hole 601 is respectively communicated with the scraping groove hole 701 and the inside of the heating rod 6, the pulling chain 504 is connected with the pulling rod 503 and the scraping plate 501 through the communication groove hole 601, and the pulling spring 505 is arranged in the scraping groove hole 701. The two ends of the pulling spring 505 are respectively connected with the scraping plate 501 and the spiral rib 7; The present scheme is provided with the pulling cylinder 502, which realizes the sliding of the scraping plate 501; When the pulling cylinder 502 controls the pulling rod 503 to move towards the top, the pulling rod 503 will pull the scraping plate 501 to slide into the scraping groove hole 701 through the pulling chain 504, so as to realize the contraction of the scraping plate 501 in the scraping groove hole 701; When the pulling cylinder 502 controls the pulling rod 503 to move towards the bottom, at this time the pulling chain 504 no longer exerts force on the scraping plate 501, so the scraping plate 501 extends out of the scraping groove hole 701 under the action of the pulling spring 505.
[0024] Further, in order to ensure smooth pulling of the pulling chain 504, the scraping assembly 5 further comprises a guide roller 506 rotatably arranged in the heating rod 6, and the guide roller 506 is arranged in abutment with the bending position of the pulling chain 504; by arranging the guide roller 506, the sliding friction at the bending position of the pulling chain 504 can be reduced, so as to ensure that the pulling chain 504 can be normally pulled.
[0025] Specifically, the heating assembly 4 is arranged in the heating rod 6.
[0026] According to the description of the above embodiment, after the scraping plate 501 scrapes the molten plastic adhered to the inner wall of the rotating cylinder 2, the molten plastic still remains in the state of mutual adhesion due to the adhesion force between the molten plastic, and the molten plastic in the state of adhesion cannot be immediately converted into the molten plastic in the state of flow when falling into the processing groove hole 201; therefore, when the molten plastic in the state of adhesion with large volume falls into the processing groove hole 201, the molten plastic in the state of adhesion is stuck in the processing groove hole 201, and then the flowability of the remaining molten plastic in the processing groove hole 201 is deteriorated, which affects the production speed of the molten plastic. Based on this, the end of the scraping plate 501 close to the rotating cylinder 2 is arranged in an inclined manner, that is, when viewed from top to bottom, the end of the scraping plate 501 close to the rotating cylinder 2 is arranged in an inclined manner, the melting groove hole 5011 is arranged in the scraping plate 501, the melting groove hole 5011 and the inclined surface of the inclined end of the scraping plate 501 are in communication with each other and form a melting groove 5012, and the inclined end of the scraping plate 501 can be locked or released from the abutting scraping relationship with the inner wall of the rotating cylinder 2; by arranging the melting groove 5012, when the scraping plate 501 abuts against the inner wall of the rotating cylinder 2, the scraping plate 501 starts to scrape the molten plastic adhered to the rotating cylinder 2 with the rotation of the rotating cylinder 2; in addition, it should be noted that due to the combined cooperation of the arrangement direction of the inclined end of the scraping plate 501 and the rotation direction of the rotating cylinder 2, the scraped molten plastic moves to the inclined end surface of the scraping plate 501, and then the scraped molten plastic enters the melting groove hole 5011 through the melting groove 5012, so that after the scraping plate 501 scrapes the molten plastic adhered to the inner wall of the rotating cylinder 2, the scraped molten plastic is collected and processed, which avoids the situation that the molten plastic in the state of adhesion is stuck in the processing groove hole 201, and then the flowability of the remaining molten plastic in the processing groove hole 201 is deteriorated, which affects the production speed of the molten plastic.
[0027] In addition, there is another advantage that the molten plastic in the bonding state is collected in the scraping plate 501: when the scraping plate 501 completes the scraping process of the molten plastic adhered to the inner wall of the rotating cylinder 2 and is completely collected in the scraping plate 501, the scraping plate 501 is retracted into the spiral ridge 7; since the heating assembly 4 is arranged in the heating cylinder 3, when the scraping plate 501 is retracted into the spiral ridge 7, the temperature of the scraping plate 501 is increased again, and thus the molten plastic in the bonding state in the scraping plate 501 is reconverted into molten plastic in the flowing state.
[0028] It should be noted that, in the actual working process of the device, since the molten plastic absorbs a large amount of heat, when the heat is transferred from the spiral ridge 7 to the inner wall of the rotating cylinder 2, the heat is partially absorbed by the molten plastic, and thus it is difficult for the heat reaching the inner wall of the rotating cylinder 2 to re-melt the molten plastic in the bonding state adhered to the inner wall of the rotating cylinder 2 into molten plastic in the flowing state. Obviously, the heating assembly 4 increases the output power to make the heat reaching the inner wall of the rotating cylinder 2 enough to re-melt the molten plastic in the bonding state adhered to the inner wall of the rotating cylinder 2 into molten plastic in the flowing state, however, such a processing manner easily causes the temperature near the heating rod 6 to be greatly increased, and thus the molten plastic near the spiral ridge 7 is cracked, affecting the quality of the molten plastic. Based on this, the present scheme is provided with the scraping plate 501, the molten plastic in the bonding state is collected in the scraping plate 501, and then the scraping plate 501 is retracted into the spiral ridge 7, so that the heating assembly 4 can re-melt the molten plastic in the bonding state into molten plastic in the flowing state without increasing the output power.
[0029] Specifically, the present scheme further includes a hollow conical rod 8 coaxially connected to the bottom of the rotating cylinder 2, and an output port 801 coaxially arranged at the bottom of the conical rod 8, and the processing slot hole 201 and the output port 801 are in communication with each other. By arranging the conical rod 8, when the molten plastic flows out of the processing slot hole 201, the molten plastic enters the conical rod 8 and finally flows out of the output port 801 of the conical rod 8. It should be noted that the output port 801 of the conical rod 8 of the present scheme is located at the top of the input end of the plastic forming machine, and such an arrangement enables the molten plastic to smoothly enter the plastic forming machine.
[0030] According to the description of the above embodiment, when the molten plastic in the scraping plate 501 is completely converted into a flowing state, it is necessary to discharge the molten plastic in the flowing state in the scraping plate 501 into the tapered rod 8; based on this, in order to achieve this purpose, the heating rod 6 of the present scheme is also provided with a flowing groove hole 602 and a connecting groove hole 603, and the flowing groove hole 602 is in communication with the tapered rod 8; it should be noted that the axis direction of the flowing groove hole 602 of the present scheme is arranged in parallel with the axis direction of the heating rod 6; in addition, the connecting groove hole 603 is in communication with the scraping groove hole 701 and the flowing groove hole 602 respectively, thereby realizing the communication between the flowing groove hole 602 and the scraping groove hole 701; the side wall surface of the scraping plate 501 is also provided with a flow outlet 5013, and the flow outlet 5013 is in communication with the molten groove hole 5011 and the scraping groove hole 701 respectively; it should be noted that the bottom surface of the scraping plate 501 is arranged in abutment with the bottom surface of the scraping groove hole 701, and the scraping plate 501 is slidingly arranged in the scraping groove hole 701. The space between the scraping plate 501 and the scraping groove hole 701 is defined as an overflow space. When the scraping plate 501 extends out of the scraping groove hole 701, during the scraping of the molten plastic in the bonding state adhering to the inner wall of the rotating cylinder 2 by the scraping plate 501, the molten plastic in the bonding state will also enter the scraping plate 501, and part of the molten plastic in the flowing state will also enter the scraping plate 501; then the molten plastic in the flowing state in the scraping plate 501 will enter the overflow space through the flow outlet 5013; while the molten plastic in the bonding state remains in the scraping plate 501; During the retraction of the scraping plate 501 into the scraping groove hole 701, the molten plastic in the flowing state in the overflow space will be pushed into the flowing groove hole 602 by the scraping plate 501; and when the molten plastic in the bonding state is re-melted into molten plastic in the flowing state, the molten plastic in the scraping plate 501 will enter the overflow space through the flow outlet 5013, thereby realizing the discharge of the molten plastic in the flowing state in the scraping plate 501 into the tapered rod 8.
[0031] In addition, in order to further ensure that the molten plastic in the flowing state in the overflow space will enter the flowing groove hole 602 through the connecting groove hole 603, the present scheme is inclined, and when the scraping plate 501 is retracted into the scraping groove hole 701, the bottom of the overflow space between the scraping plate 501 and the scraping groove hole 701 is inclined, and the height of the bottom surface of the overflow space decreases from the flow outlet 5013 to the connecting groove hole 603; such arrangement ensures that after the scraping plate 501 is retracted into the scraping groove hole 701, the molten plastic in the flowing state flowing out of the flow outlet 5013 will flow into the flowing groove hole 602 due to gravity.
[0032] Further, the bottom of the scraping plate 501 is inclinedly arranged, and the height of the bottom of the scraping plate 501 decreases along the straight line direction from the melting slot 5012 to the flow outlet 5013; through such arrangement, the molten plastic in a flowing state located in the scraping plate 501 will flow along the bottom surface of the scraping plate 501 to the flow outlet 5013, and finally flow into the flow slot hole 602 through the flow outlet 5013, so as to avoid the molten plastic in a flowing state remaining in the scraping plate 501.
[0033] According to the description of the above embodiment, in order to ensure that the molten plastic in a bonding state can enter the inside of the scraping plate 501 after the molten plastic in a bonding state is scraped by the scraping plate 501, the present scheme further comprises an air pump assembly 9, the air pump assembly 9 comprises an output air pump 901 and a heat-insulating air pipe 902, the output air pump 901 is arranged on the rack 1, and the top surface of the heating rod 6 is further provided with a gas inlet, the gas inlet and the flow slot hole 602 are in communication with each other, and the two ends of the heat-insulating air pipe 902 are in communication with the output port 801 of the output air pump 901 and the gas inlet respectively; it should be noted that the gas inlet and the flow slot hole 602 of the present scheme are arranged opposite to the communication position of the tapered rod 8; when the output air pump 901 starts to work, the air blown by the output air pump 901 will flow into the tapered rod 8 through the gas inlet; here, the connecting slot hole 603, the scraping slot hole 701 and the melting slot hole 5011 of the present scheme jointly form a negative pressure space, since the negative pressure space and the flow slot hole 602 are in communication with each other, and the communication position of the negative pressure space and the flow slot hole 602 is on the inner side wall of the flow slot hole 602, when the air pump assembly 9 works, a negative pressure effect will be caused to the negative pressure space, so that the melting slot 5012 of the scraping plate 501 of the present scheme has an adsorption effect, thereby realizing the adsorption effect of the molten plastic in a bonding state by the scraping plate 501, so as to ensure that the molten plastic in a bonding state can smoothly enter the inside of the scraping plate 501 from the melting slot 5012.
[0034] Further, it is worth mentioning that in order to achieve the scraping treatment of the entire inner wall of the rotating cylinder 2 by the scraping plate 501, the scraping plate 501 is provided with a plurality of spiral protrusions 7, and the spiral protrusions 7 are provided with a plurality of scraping groove holes 701. The plurality of scraping groove holes 701 are arranged at equal intervals along the arrangement path of the spiral protrusions 7, and the plurality of scraping groove holes 701 are one-to-one corresponding to the plurality of scraping plates 501. Any scraping plate 501 is slidingly arranged in the corresponding scraping groove hole 701. It should be noted that the pulling chain 504 is also provided with a plurality of heating rods 6, and the heating rod 6 is provided with a plurality of communication groove holes 601. The plurality of communication groove holes 601 are one-to-one corresponding to the plurality of scraping groove holes 701. Any communication groove hole 601 is in communication with the corresponding scraping groove hole 701. The plurality of pulling chains 504 are one-to-one corresponding to the plurality of scraping plates 501. Any pulling chain 504 is connected to the corresponding scraping plate 501 and the pulling rod 503 through the corresponding communication groove hole 601. Further, the pulling spring 505 is also provided with a plurality of pulling springs 505. The plurality of pulling springs 505 are one-to-one corresponding to the plurality of scraping plates 501. Any pulling spring 505 is arranged in the corresponding scraping groove hole 701. The two ends of the pulling spring 505 are connected to the corresponding scraping plate 501 and the spiral protrusion 7, respectively. In addition, the guide roller 506 of the present scheme is also provided with a plurality of guide rollers 506. The plurality of guide rollers 506 are one-to-one corresponding to the plurality of pulling chains 504. Any guide roller 506 is arranged at the bending position of the corresponding pulling chain 504.
[0035] In addition, it should be noted that the flow groove hole 602 of the present scheme is provided with a plurality of flow groove holes 602. The plurality of flow groove holes 602 are uniformly arranged at equal angles along the central axis direction of the heating rod 6. The plurality of flow groove holes 602 are one-to-one corresponding to the plurality of scraping plates 501. Any flow groove hole 602 is in communication with the corresponding melting groove hole 5011. At the same time, the heat insulation gas pipe 902 of the present scheme is also provided with a plurality of heat insulation gas pipes 902. The plurality of heat insulation gas pipes 902 are one-to-one corresponding to the plurality of flow groove holes 602. The two ends of any heat insulation gas pipe 902 are in communication with the corresponding flow groove hole 602 and the output end of the output gas pump 901, respectively. It should be noted that in the present scheme, the rack 1 is provided with a plurality of air passage groove holes. The plurality of air passage groove holes are one-to-one corresponding to the plurality of heat insulation gas pipes 902. The two ends of any air passage groove hole are in communication with the corresponding heat insulation gas pipe 902 and the corresponding flow groove hole 602, respectively, to ensure the connection between the heat insulation gas pipe 902 and the corresponding flow groove hole 602.
[0036] In addition, it is worth mentioning that the projection lines of the melting groove 5012 on the central axis of the rotating cylinder 2 are in communication with each other, and the sum of the lengths of the plurality of melting grooves 5012 projected on the central axis of the rotating cylinder 2 is greater than the length of the rotating cylinder 2. Through such arrangement, the plurality of scraping plates 501 can collectively scrape the inner wall of the entire rotating cylinder 2.
[0037] It also needs to be explained that in order to realize the rotation of the rotating cylinder 2, the scheme further comprises a rotating motor 10, a driving gear 11 and a driven gear 12, the rotating motor 10 is arranged on the frame 1, the driving gear 11 is coaxially sleeved on the output end of the rotating motor 10, the driven gear 12 is coaxially sleeved on the outer side wall of the rotating cylinder 2, and the driving gear 11 and the driven gear 12 are connected with each other. By being provided with the rotating motor 10, with the rotation of the rotating motor 10, the driving gear 11 and the driven gear 12 are controlled to be engaged and connected, so that the rotation of the rotating cylinder 2 is realized.
[0038] The above is only the preferred embodiment of the present application, and does not limit the present application in any form. Although the present application has been disclosed as above with the preferred embodiment, it is not intended to limit the present application. Any person skilled in the art can make some changes or modifications to the equivalent embodiments with the disclosed technical content without departing from the scope of the technical scheme of the present application. Any modification, equivalent change and modification of the above embodiments according to the technical essence of the present application still belong to the scope of the technical scheme of the present application.
Claims
1. A plastic mold heating device, comprising a frame, an internally hollow rotating cylinder, a heating cylinder and a heating assembly, the rotating cylinder is vertically arranged on the frame and can rotate, the heating cylinder is coaxially arranged in the rotating cylinder, the heating cylinder is connected with the frame, and the heating assembly is arranged in the heating cylinder, the heating cylinder and the rotating cylinder jointly form a processing slot hole with a spiral shape, characterized in that: The scraping assembly comprises a scraping plate, the heating cylinder is provided with a scraping groove hole, the scraping plate is slidingly arranged in the scraping groove hole, and the scraping plate can be locked or unlocked with the inner wall of the rotating cylinder. 2. A plastic mould heating device according to claim 1, characterised in that: The heating cylinder comprises a heating rod and a spiral convex strip, the spiral convex strip is coaxially arranged on the outer sidewall of the heating rod, and the scraping groove hole is arranged on the spiral convex strip.
3. A plastic mould heating device according to claim 2, characterised in that: The scraping assembly further comprises a pulling cylinder, a pulling rod, a pulling chain and a pulling spring, the pulling cylinder is vertically arranged on the top of the heating cylinder, the heating rod is internally hollow, the pulling rod is coaxially arranged in the heating rod, the output end of the pulling cylinder is connected with the pulling rod, the heating rod is further provided with a communication groove hole, the communication groove hole is in communication with the scraping groove hole and the interior of the heating rod respectively, the pulling chain is connected with the pulling rod and the scraping plate respectively by penetrating the communication groove hole, the pulling spring is arranged in the scraping groove hole, and two ends of the pulling spring are connected with the scraping plate and the spiral convex strip respectively.
4. A plastic mould heating device according to claim 3, characterised in that: The scraping assembly further comprises a guide roller, the guide roller is rotatably arranged in the heating rod, and the guide roller is arranged in close contact with the bending position of the pulling chain.
5. A plastic mold heating device according to claim 2, wherein: The heating assembly is arranged in the heating rod.
6. A plastic mold heating device according to claim 3, wherein: The scraping plate is arranged in close contact with one end of the rotating cylinder, a melting groove hole is arranged in the scraping plate, the melting groove hole is in communication with the inclined surface of the inclined end of the scraping plate and forms a melting slot, and the inclined end of the scraping plate can be locked or unlocked with the inner wall of the rotating cylinder.
7. A plastic mould heating device according to claim 6, characterised in that: A hollow conical rod is further arranged, the conical rod is coaxially connected with the bottom of the rotating cylinder, an output port is coaxially arranged on the bottom of the conical rod, and the processing groove hole is in communication with the output port.
8. A plastic mould heating device according to claim 7, characterised in that: The heating rod is further provided with a flow groove hole and a connecting groove hole, the flow groove hole is in communication with the conical rod, the connecting groove hole is in communication with the scraping groove hole and the flow groove hole respectively, and the side wall surface of the scraping plate is further provided with a flow outlet, the flow outlet is in communication with the melting groove hole and the scraping groove hole respectively.
9. A plastic mould heating device according to claim 8, characterised in that: The bottom of the scraping plate is arranged in close contact with the flow outlet along the straight line direction of the melting slot, and the height of the bottom of the scraping plate gradually decreases.
10. A plastic mold heating device according to claim 8, wherein: The scraping assembly further comprises an air pump assembly, the air pump assembly comprises an output air pump and a heat insulation air pipe, the output air pump is arranged on the rack, the top surface of the heating rod is further provided with a gas inlet, the gas inlet is in communication with the flow groove hole, and two ends of the heat insulation air pipe are in communication with the output port of the output air pump and the gas inlet respectively.