Production control device and method for injection molding production line

Abstract

The present invention relates to the field of injection molding, and specifically to a production control device and method for an injection molding production line, wherein the production control device of the injection molding production line includes a frame, a material storage component, a preheating component, and an injection molding extrusion component, wherein the material storage component is used to temporarily store renewable plastic particles and feed the renewable plastic particles into the preheating component, and the preheating component is arranged below the material storage component. The present invention is provided with a material storage component, a preheating component, and an injection molding extrusion component, and during the continuous rotation of a sliding heating plate and a fixed heating plate, the renewable particles can be put into the injection molding extrusion component in a timely manner in a discharge area after being fully softened, while the renewable plastic particles that are not fully softened and thinned remain in the preheating component and continue to be heated, thereby not only ensuring that all renewable plastic particles entering the injection molding extrusion component reach the softening degree required for preheating, but also preventing the renewable plastic particles from being overheated.

Description

Technical Field

[0001] The invention relates to the field of injection molding, and in particular to a production control device and method for an injection molding production line. Background Art

[0002] Renewable plastic particles are a common raw material in the current injection molding production process. Using renewable plastic particles to injection mold products can achieve the recycling of raw materials and reduce the consumption of non-renewable resources.

[0003] When using renewable plastic particles for injection molding production, it is necessary to preheat the renewable plastic particles before injection molding to soften the surface and interior of the renewable plastic particles to improve the fluidity of the renewable plastic particles during injection molding. For example, the Chinese invention patent with the authorization announcement number CN110370493B discloses a preheating treatment system for recycled plastic particles before injection molding. The system heats the plastic particles by setting a multi-layer carrier plate and using each layer of the carrier plate to extend the softening time of the plastic particles and improve the softening uniformity of the plastic particles. However, its technical solution still has the following defects: it is difficult to ensure that all the renewable plastic particles are heated in exactly the same way during the heating process. If the renewable plastic particles are heated too much, their fluidity increases and the thermosetting time is long, which is not conducive to the molding of injection molded products. Summary of the invention

[0004] Based on this, it is necessary to provide a production control device and method for an injection molding production line to address the problems existing in the current injection molding control equipment, which can not only improve the uniformity of heating of renewable plastics, but also deliver the renewable plastic particles to the injection molding extrusion component in time after the renewable plastic particles are heated to complete softening, while ensuring the fluidity of the renewable plastic particles and avoiding overheating of the renewable plastic and affecting the thermosetting molding of the injection molding product.

[0005] The above purpose is achieved through the following technical solutions:

[0006] A production control device for an injection molding production line, comprising:

[0007] frame;

[0008] A material storage component, which is used to temporarily store renewable plastic particles;

[0009] A preheating component, which is arranged below the material storage component and is used to heat the renewable plastic particles entering the material storage component;

[0010] An injection molding extrusion assembly, the injection molding extrusion assembly is located below the preheating assembly, and the injection molding extrusion assembly is used to extrude the renewable plastic particles entering the preheating assembly into the interior thereof;

[0011] The preheating assembly includes a warehouse body and a preheating unit, and the preheating unit includes a middle tube, a plurality of fixed heating plates and a plurality of sliding heating plates. The middle tube can rotate around its axis, and the plurality of fixed heating plates and the plurality of sliding heating plates are alternately arranged at equal intervals in the circumferential direction of the middle tube. The sliding heating plate can slide along the circumferential direction of the middle tube to adjust the spacing between the sliding heating plate and the fixed heating plate; the middle tube rotates one circle, and the adjacent sliding heating plates and fixed heating plates pass through the loading area, the extrusion heating area and the discharge area in turn. When in the loading area, the sliding heating plate and the fixed heating plate receive the material from the material storage assembly and the spacing is adjusted to a first spacing. When the middle tube continues to rotate along the first direction by a first preset angle to reach the extrusion heating area, the spacing between the sliding heating plate and the fixed heating plate is adjusted to a second spacing and the material sandwiched therebetween is extruded. After the middle tube continues to rotate along the first direction by a second preset angle, the spacing between the sliding heating plate and the fixed heating plate is adjusted to a third spacing, and the material sandwiched between the sliding heating plate and the fixed heating plate and reaching the preheating softening degree is discharged, and the third spacing is greater than the second spacing and less than the first spacing.

[0012] In one embodiment, there are a plurality of preheating units, which are horizontally spaced apart along the length direction of the bin body, and the middle tubes in each preheating unit have the same rotation direction.

[0013] In one embodiment, connecting rods are provided on both sides of the sliding heating plate in the length direction, and an inclined block is provided on the middle tube at a position corresponding to the connecting rod. The inclined block can slide along the axis of the middle tube, and the inclined surface of the inclined block cooperates with the connecting rod stop.

[0014] In one of the embodiments, a first guide groove is provided on the warehouse body at a position corresponding to the loading area, a second guide protrusion is provided on the warehouse body at a position corresponding to the extrusion heating area, a third guide protrusion is provided on the warehouse body at a position corresponding to the discharge area, a second ball head guide rod is provided on the middle tube, the second ball head guide rod can slide along the axis of the middle tube, one end of the second ball head guide rod is connected to the inclined block, and after the second ball head guide rod rotates one circle with the middle tube, the other end of the second ball head guide rod can slide with the first guide groove, the second guide protrusion and the third guide protrusion in sequence.

[0015] In one embodiment, the sliding heating plate can slide along the radial direction of the middle barrel.

[0016] In one of the embodiments, a first ball head guide rod is further provided on the connecting rod, and the first ball head guide rod is arranged to slide radially along the middle tube. A star guide wheel is connected to the warehouse body, and the star guide wheel is concentrically arranged with the middle tube. The first ball head guide rod is in sliding contact with the outer peripheral surface of the star guide wheel.

[0017] In one of the embodiments, the sliding heating plate further comprises a plurality of heating plates, the plurality of heating plates are arranged at intervals along the length direction of the sliding heating plate, and the heating plates are elastic.

[0018] In one of the embodiments, the material storage assembly includes a material storage box and a material guide hopper, and the material guide hopper is provided with an electric switch.

[0019] In one of the embodiments, a vibration source is also provided on the storage box.

[0020] A production control method for an injection molding production line is used to perform the following steps:

[0021] S100, detecting whether there are renewable plastic particles between the fixed heating plate and the corresponding sliding heating plate when the fixed heating plate and the corresponding sliding heating plate are rotated to the loading area, if yes, executing S200, if no, executing S300;

[0022] S200, turning on the electric switch to add the renewable plastic particles between the fixed heating plate and the corresponding sliding heating plate at the upper material area;

[0023] S300, electric switch off.

[0024] The beneficial effects of the present invention are:

[0025] The present invention is provided with a material storage component, a preheating component and an injection extrusion component. When the sliding heating plate and the fixed heating plate in the preheating component rotate to the loading area, the distance between the sliding heating plate and the fixed heating plate is adjusted to a first distance, that is, a maximum distance. At this time, the material in the material storage component falls between the sliding heating plate and the fixed heating plate. When the sliding heating plate and the fixed heating plate rotate to the extrusion heating area, the distance between the sliding heating plate and the fixed heating plate is adjusted to a second distance, that is, a minimum distance. At this time, the sliding heating plate and the fixed heating plate extrude and heat the renewable plastic particles sandwiched therebetween. After the sliding heating plate and the fixed heating plate rotate to the discharge area, the sliding heating plate and the fixed heating plate The spacing between them is adjusted to a third spacing, which is between the maximum spacing and the minimum spacing. At this time, the spacing between the sliding heating plate and the fixed heating plate, the fully softened and thinned renewable plastic particles are discharged from between the sliding heating plate and the fixed heating plate into the injection extrusion component. During the continuous rotation of the sliding heating plate and the fixed heating plate, the renewable particles are fully softened and can be put into the injection extrusion component in the discharge area in time, while the renewable plastic particles that are not fully softened and thinned remain in the preheating component for continuous heating, thereby not only ensuring that all renewable plastic particles entering the injection extrusion component reach the softening degree required for preheating, but also avoiding overheating. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1It is a schematic diagram of the axonometric structure of a production control device of an injection molding production line of the present invention;

[0027] Figure 2 A schematic diagram of the connection structure of a bin body of a production control device for an injection molding production line of the present invention;

[0028] Figure 3 A schematic structural diagram of a material storage box of a production control device of an injection molding production line of the present invention;

[0029] Figure 4 It is a structural schematic diagram of a gear connection hole of a production control device of an injection molding production line of the present invention;

[0030] Figure 5 A schematic diagram of the connection structure of a middle bobbin of a production control device of an injection molding production line of the present invention;

[0031] Figure 6 for Figure 5 A schematic diagram of the structure enlargement in the middle;

[0032] Figure 7 It is a schematic diagram of the connection structure of the star-shaped guide wheel and the middle tube of the production control device of the injection molding production line of the present invention;

[0033] Figure 8 It is a structural schematic diagram of a sliding heating plate of a production control device of an injection molding production line of the present invention;

[0034] Fig. 9 for Figure 8 Schematic diagram of an enlarged view of the structure at B;

[0035] Fig.10 It is a structural schematic diagram of a first guide groove and a second guide protrusion of a production control device of an injection molding production line of the present invention;

[0036] Fig.11 This is a schematic diagram of the connection structure of the gear shaft in a production control device of an injection molding production line of the present invention;

[0037] Fig.12 for Fig.11 Schematic diagram of the enlarged structure at location C.

[0038] in:

[0039] 100, frame; 200, material storage assembly; 210, material storage box; 220, guide hopper; 230, vibration source; 300, preheating assembly; 310, warehouse; 311, material discharge trough; 312, gear connection hole; 320, middle tube; 321, arc-shaped slide groove; 322, slide hole; 323, slideway; 330, side end cover; 331, first guide groove; 332, second guide protrusion; 333, third guide protrusion; 3 34. Star guide wheel; 340. Fixed heating plate; 350. Sliding heating plate; 351. Connecting rod; 352. Heating plate; 353. Connecting block; 360. Bevel block; 370. First ball guide rod; 380. Second ball guide rod; 391. Motor; 392. Gear one; 393. Gear two; 394. Gear shaft; 400. Injection extrusion assembly; 410. Hydraulic motor; 420. Gun barrel; 430. Hydraulic press. DETAILED DESCRIPTION

[0040] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below through embodiments and in conjunction with the accompanying drawings. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0041] The serial numbers assigned to the components herein, such as "first", "second", etc., are only used to distinguish the objects described and do not have any order or technical meaning. The "connection" and "coupling" mentioned in this application, unless otherwise specified, include direct and indirect connections (couplings). In the description of the present invention, it should be understood that the orientation or position relationship indicated by the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", etc. are based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present invention.

[0042] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0043] like Figure 1-Figure 12As shown, a production control device for an injection molding production line includes a frame 100, a material storage component 200, a preheating component 300 and an injection molding extrusion component 400. The material storage component 200 is used to temporarily store renewable plastic particles and feed the renewable plastic particles into the preheating component 300. The preheating component 300 is arranged below the material storage component 200. The preheating component 300 is used to heat the renewable plastic particles entering from the material storage component 200. The injection molding extrusion component 400 is located below the preheating component 300. The injection molding extrusion component 400 is used to heat the renewable plastic particles entering from the preheating component 300. The frame 100 is arranged at the lower end of the injection molding extrusion assembly 400 for supporting the device as a whole; the preheating assembly 300 includes a bin body 310 and a preheating unit, the preheating unit includes a middle tube 320, a plurality of fixed heating plates 340 and a plurality of sliding heating plates 350, the middle tube 320 can rotate around its axis, the plurality of fixed heating plates 340 and the plurality of sliding heating plates 350 are alternately arranged at equal intervals in the circumferential direction of the middle tube 320, and the sliding heating plates 350 can slide along the circumferential direction of the middle tube 320 to adjust the sliding heating plates 350 and the fixed heating plates 340 and the sliding heating plates 350. The spacing between the fixed heating plates 340 is fixed; when the middle bobbin 320 rotates one circle, the adjacent sliding heating plates 350 and fixed heating plates 340 pass through the loading area, the extrusion heating area and the discharge area in sequence. When in the loading area, the spacing between the sliding heating plate 350 and the fixed heating plate 340 is adjusted to the first spacing, that is, the maximum spacing, and the material storage component 200 can add material between the sliding heating plate 350 and the fixed heating plate 340. When the middle bobbin 320 continues to rotate along the first direction by a first preset angle to reach the extrusion heating area, the spacing between the sliding heating plate 350 and the fixed heating plate 340 is adjusted to The fixed heating plate 340 and the sliding heating plate 350 are adjusted to the second spacing, that is, the minimum spacing. At this time, the fixed heating plate 340 and the sliding heating plate 350 can extrude and heat the renewable plastic particles sandwiched therebetween. When the barrel 320 continues to rotate along the first direction by a second preset angle to reach the discharge area, the spacing between the sliding heating plate 350 and the fixed heating plate 340 is adjusted to the third spacing, which is greater than the second spacing and smaller than the first spacing. The renewable plastic particles sandwiched between the fixed heating plate 340 and the sliding heating plate 350 and which have reached the softening degree required for preheating after extrusion are discharged into the injection extrusion assembly 400.

[0044] It is also supplemented that the storage component 200 includes a storage box 210 and a guide hopper 220, and the guide hopper 220 is independently provided with an electric switch. A discharge trough 311 is correspondingly provided on the upper surface of the bin body 310 and above the middle tube 320. After the electric switch is turned on, the renewable plastic particles in the guide hopper 220 can enter the loading area through the discharge trough 311. When the sensor detects that there are no renewable plastic particles sandwiched between the fixed heating plate 340 rotated to the loading area and the corresponding sliding heating plate 350, the electric switch is automatically turned on, and the renewable plastic particles enter the discharge trough 311 from the storage box 210 through the guide hopper 220, and finally fall between the fixed heating plate 340 and the sliding heating plate 350 rotated to the loading area. Otherwise, the electric switch is not turned on.

[0045] It should also be added that one end of the middle tube 320 is connected to a gear shaft 394, and a gear connecting hole 312 for installing the gear shaft 394 is opened on the warehouse body 310. The gear shaft 394 is rotatably set in the gear connecting hole 312, and one end of the gear shaft 394 is connected to a driving motor for driving the middle tube 320 to rotate.

[0046] When in use, the staff first adds the renewable plastic particles into the storage box 210, and then starts the driving motor to rotate the middle tube 320 clockwise. When each set of fixed heating plates 340 and sliding heating plates 350 rotates to the loading area following the middle tube 320, the sensor detects whether there are renewable plastic particles between the fixed heating plate 340 and the corresponding sliding heating plate 350. If not, the sensor sends an electrical signal to the electric switch, which automatically opens after receiving the electrical signal, and the renewable plastic particles in the guide hopper 220 pass through the discharge trough 31 1 falls between the fixed heating plate 340 and the sliding heating plate 350 at the feeding area; as the middle tube 320 continues to rotate clockwise, the fixed heating plate 340 and the sliding heating plate 350 sandwiching the renewable plastic particles rotate to the extrusion heating area. In this process, the distance between the fixed heating plate 340 and the corresponding sliding heating plate 350 gradually decreases, and the pressure of the fixed heating plate 340 and the corresponding sliding heating plate 350 on the renewable plastic particles gradually increases, so that the fixed heating plate 340 and the corresponding sliding heating plate 350 exert pressure on the renewable plastic particles. While heating, the renewable plastic particles are squeezed, causing the renewable plastic particles to become thinner, so that the core of the renewable plastic particles can be softened by heat; as the middle tube 320 continues to rotate clockwise, the fixed heating plate 340 and the corresponding sliding heating plate 350 sandwiching the renewable plastic particles rotate to the discharge area. At this time, if the renewable plastic particles sandwiched between the fixed heating plate 340 and the sliding heating plate 350 have been fully softened and thinned by heat, the pressure value between them and the fixed heating plate 340 and the corresponding sliding heating plate 350 is reduced, and the renewable plastic particles can be heated and softened. The recycled plastic particles can fall into the injection extrusion assembly 400 under the action of their own gravity. If the recycled plastic sandwiched between the fixed heating plate 340 and the sliding heating plate 350 is not sufficiently softened and thinned by heat, the friction force provided by the pressure between the recycled plastic particles rotating to the discharge area and the fixed heating plate 340 and the corresponding sliding heating plate 350 is greater than the self-gravity of the recycled plastic particles, and the recycled plastic particles cannot fall but remain between the fixed heating plate 340 and the corresponding sliding heating plate 350 and continue to rotate with the middle tube 320.When the fixed heating plate 340 and the sliding heating plate 350 rotate to the feeding area again, the sensor detects whether there are renewable plastic particles between the fixed heating plate 340 and the sliding heating plate 350. If not, the electric switch is turned on. If yes, the electric switch is not turned on. Therefore, the device can timely put the renewable plastic particles into the injection molding extrusion component 400 after the renewable particles reach the softening degree required for preheating, while the renewable plastic particles that have not reached the softening degree required for preheating remain between the fixed heating plate 340 and the sliding heating plate 350 for further heating, and when the fixed heating plate 340 and the sliding heating plate 350 rotate to the feeding area, no renewable plastic particles are added between the fixed heating plate 340 and the sliding heating plate 350, thereby not only ensuring that all the renewable plastic particles entering the injection molding extrusion component 400 reach the softening degree required for preheating, but also preventing the renewable plastic particles from being overheated. ;

[0047] It should also be supplemented that, since the spacing width between the fixed heating plate 340 and the corresponding sliding heating plate 350 needs to be further expanded when rotating from the discharge area to the upper material area, in order to prevent the renewable plastic particles that are not fully softened and thinned from falling into the injection extrusion assembly 400 during the expansion of the spacing width, it is necessary to rotate the fixed heating plate 340 and the corresponding sliding heating plate 350 to a position where both are tilted upward, and then expand the spacing width between the fixed heating plate 340 and the corresponding sliding heating plate 350.

[0048] It should also be noted that the fixed heating plate 340 is elastic and can not only firmly clamp the renewable plastic particles between the fixed heating plate 340 and the corresponding sliding heating plate 350 through its own elastic deformation, but also as the renewable plastic gradually softens, the fixed heating plate 340 can change its own elastic deformation so that the fixed heating plate 340 and the corresponding sliding heating plate 350 maintain pressure contact with the renewable plastic particles, thereby allowing the renewable plastic particles to be continuously heated.

[0049] In a further embodiment, Figure 2 , Figure 3 and Fig.12As shown, there are multiple preheating units, and the multiple preheating units are horizontally spaced along the length direction of the warehouse body 310. The rotation direction of the middle tube 320 in each preheating unit is the same. Specifically, gear connecting holes 312 are horizontally spaced along the length direction of the warehouse body 310 on the side of the warehouse body 310. The gear shaft 394 connected to each middle tube 320 is rotatably set in the gear connecting hole 312. The outside of each gear shaft 394 is connected to a gear 1 392. The gear 1 392 is meshed and connected between two adjacent gears 1 392. A connecting shaft is set at the center of the gear 2 393, and the connecting shaft is also rotatably connected in the corresponding gear connecting hole 312. The gear shaft 394 connected to one of the gears 1 392 is fixedly connected to a motor 391, and the motor 391 is fixedly set on the warehouse body 310. Therefore, when the motor 391 rotates clockwise, it can drive all the middle tubes 320 to rotate clockwise through the gear transmission of multiple gears 1 392 and multiple gears 2 393.

[0050] It should also be added that in order to adapt to multiple preheating units, the upper end surface of the bin body 310 also needs to be provided with multiple discharge troughs 311, and correspondingly, the lower end of the storage box 210 also needs to be provided with multiple guide hoppers 220, and the electric switch in the guide hopper 220 is used to control whether to load the material.

[0051] It can be understood that by providing multiple groups of preheating units, the amount of renewable plastic particles preheated by the preheating component 300 per unit time can be increased, thereby significantly improving efficiency.

[0052] In a further embodiment, Figure 8 and Fig. 9 As shown, connecting rods 351 are provided at both ends of the sliding heating plate 350, and inclined blocks 360 are provided on the circumference of the middle tube 320 and at positions corresponding to each connecting rod 351. The inclined blocks 360 can slide along the axis of the middle tube 320, and the inclined surfaces of the inclined blocks 360 cooperate with the connecting rods 351 for stopping.

[0053] When the distance between the fixed heating plate 340 and the sliding heating plate 350 needs to be reduced, the inclined block 360 moves toward the direction close to the connecting rod 351. Under the push of the inclined surface of the inclined block 360, the connecting rod 351 drives the sliding heating plate 350 to slide toward the direction close to the fixed heating plate 340, thereby reducing the distance between the fixed heating plate 340 and the sliding heating plate 350.

[0054] In a further embodiment, Fig. 9 and Fig.10As shown, in order to more conveniently install the guide mechanism, the side end covers 330 can be coaxially rotatably arranged at both ends of the middle tube 320, so that the side end covers 330 are fixedly arranged on the bin body 310, and the guide mechanism is arranged on the inner circumference of the side end cover 330. The guide mechanism is specifically a first guide groove 331, a second guide protrusion 332 and a third guide protrusion 333. The first guide groove 331 is arranged on the inner circumference of the side end cover 330 and corresponds to the loading area, the second guide protrusion 332 is arranged on the inner circumference of the side end cover 330 and corresponds to the extrusion heating area, the third guide protrusion 333 is arranged on the inner circumference of the side end cover 330 and corresponds to the discharge area, and the third guide protrusion 333 is arranged on the inner circumference of the side end cover 330 and corresponds to the discharge area. A guide groove 331 is recessed inwardly along the radial direction of the side end cover 330, the second guide protrusion 332 has the largest protruding height along the radial direction of the side end cover 330, and the third guide protrusion 333 has a protruding height along the radial direction of the side end cover 330 that is smaller than the protruding height of the second guide protrusion 332. A second ball head guide rod 380 is provided on the middle tube 320, and the second ball head guide rod 380 can slide along the axis of the middle tube 320. One end of the second ball head guide rod 380 is connected to the inclined block 360. After the second ball head guide rod 380 rotates one circle following the middle tube 320, the other end of the second ball head guide rod 380 can slide with the first guide groove 331, the second guide protrusion 332 and the third guide protrusion 333 in sequence.

[0055] It should also be added that, Fig.11 and Fig.12 As shown, in order to realize that the connecting rod 351 drives the sliding heating plate 350 to slide circumferentially along the middle tube 320, it is specifically necessary to set a connecting block 353 at the lower end of the connecting rod 351. Correspondingly, arc-shaped slide grooves 321 corresponding to the sliding heating plate 350 are evenly spaced at both ends of the middle tube 320, and slideways 323 are provided on the side walls of the arc-shaped slide grooves 321. The connecting block 353 should have a certain curvature, so that the connecting block 353 is slidably connected in the slideway 323. A compression spring (not shown in the figure) should also be provided between one side of the slideway 323 and the connecting block 353. The compression spring is used to move the inclined block 360 away from the connecting block 353, the connecting block 353 is reset when it moves in the direction of 353. In addition, it is necessary to open sliding holes 322 corresponding to the number of second ball head guide rods 380 on the middle tube 320 at equal intervals in the circumferential direction. The sliding holes 322 are used to install the second ball head guide rods 380. At this time, it is only necessary to set a guiding mechanism on the inner circumferential surface of the middle tube 320. After the second ball head guide rod 380 rotates to the loading area, the extrusion heating area and the discharge area, the second ball head guide rod 380 cooperates with the guiding mechanism to change the matching position of the inclined block 360 and the connecting block 353, thereby achieving the purpose of adjusting the distance between the sliding heating plate 350 and the fixed heating plate 340.

[0056] When in use, when the second ball head guide rod 380 moves to the position of the first guide groove 331, the second ball head guide rod 380 slides along the first guide groove 331, and the second ball head guide rod 380 moves in the direction away from the connecting rod 351. At this time, under the action of the compression spring, the connecting block 353 drives the sliding heating plate 350 to slide along the slideway 323 to the position where the distance from the corresponding fixed heating plate 340 is the largest, that is, the loading area. As the middle tube 320 continues to rotate, the second ball head guide rod 380 slides out of the first guide groove 331 and continues to slide onto the second guide protrusion 332. Under the guiding action of the inclined surface of the starter 332, the second ball head guide rod 380 drives the inclined block 360 to move toward the direction close to the connecting rod 351, and the inclined block 360 pushes the connecting block 353 through its own inclined surface, so that the connecting block 353 moves along the slideway 323 toward the direction close to the fixed heating plate 340, so that the distance between the fixed heating plate 340 and the sliding heating plate 350 gradually decreases to the position with the smallest distance, that is, the extrusion heating zone. Similarly, after the middle tube 320 rotates to the corresponding position of the third guide protrusion 333, the distance between the fixed heating plate 340 and the sliding heating plate 350 is adjusted to the third distance, that is, the discharge zone.

[0057] In a further embodiment, Figure 7 As shown, the sliding heating plate 350 can slide along the radial direction of the middle tube 320. The radial sliding of the sliding heating plate 350 along the middle tube 320 can enable the sliding heating plate 350 to form a kneading effect on the renewable plastic particles. Kneading the renewable plastic particles by the sliding heating plate 350 can not only make the heating uniformity of the renewable plastic particles by the sliding heating plate 350 better, but also the kneading is also conducive to the renewable plastic particles becoming thinner while rolling. Compared with directly clamping the renewable plastic particles by the sliding heating plate 350, it is easier to form the renewable plastic particles into a thin strip structure by kneading.

[0058] In a further embodiment, Figure 7As shown, the connecting rod 351 is also provided with a first ball guide rod 370, which is arranged to slide along the radial direction of the middle tube 320. The hopper body 310 is connected with a star guide wheel 334 through a side end cover 330. The side end cover 330 and the star guide wheel 334 are arranged concentrically. During the rotation of the middle tube 320, the first ball guide rod 370 slides and contacts with the outer peripheral surface of the star guide wheel 334. When the first ball guide rod 370 is moved from the convex area of ​​the star guide wheel 334 to the convex area of ​​the star guide wheel 334, the first ball guide rod 370 slides and contacts with the outer peripheral surface of the star guide wheel 334. When the middle tube 320 rotates continuously, the sliding heating plate 350 continuously rubs the renewable plastic particles, so that the renewable plastic is evenly heated and becomes thinner.

[0059] It should also be added that in order to solve the influence of gravity on the radial sliding of the first ball head guide rod 370 along the middle tube 320, a tension spring can be mounted on the first ball head guide rod 370, so that one end of the tension spring is connected to the first ball head guide rod 370, and the other end of the tension spring is connected to the middle tube 320.

[0060] In a further embodiment, Figure 8 and Fig. 9 As shown, the heating plates 352 on the sliding heating plate 350 are divided into multiple pieces, and the multiple heating plates 352 are arranged at intervals along the length direction of the sliding heating plate 350. The heating plates 352 on the sliding heating plate 350 are also elastic. Such an arrangement allows each heating plate 352 to correspond to a renewable plastic particle, thereby being able to accurately control the degree of heat softening of each renewable plastic particle entering the injection molding extrusion assembly 400.

[0061] It should be supplemented in this embodiment that in order to accurately control whether each heating plate 352 of the sliding heating plate 350 and the fixed heating plate 340 need to be loaded when the fixed heating plate 340 and the sliding heating plate 350 move to the loading area, a plurality of sensors need to be provided at the loading area, each sensor corresponding to detecting a heating plate 352, and a plurality of electric switches need to be provided at the guide hopper 220 accordingly, each electric switch corresponding to a sensor. In other embodiments, only one sensor can still be provided at the loading area, and at this time, when all the renewable plastic particles between the fixed heating plate 340 and the sliding heating plate 350 have been discharged, the sensor can transmit the electrical signal to the electric switch to control the loading of the guide hopper 220 at this location.

[0062] In a further embodiment, Figure 1As shown, a vibration source 230 is also provided on the storage box 210. The vibration source 230 can specifically be any one of a vibration motor and a vibration cylinder. It generates vibrations by itself to prevent the renewable plastic particles in the storage box 210 from getting stuck in the discharge trough 311 and unable to fall into the injection molding extrusion assembly 400.

[0063] In a further embodiment, Figure 1 As shown, the injection extrusion assembly 400 includes a hydraulic motor 410, a barrel 420 and a hydraulic press 430. The hydraulic press 430 is arranged on the frame 100, the barrel 420 is arranged on the right side of the hydraulic press 430, and the hydraulic motor 410 is arranged on the left side of the hydraulic press 430. The hydraulic motor 410 is used to drive the hydraulic press 430 to move so as to squeeze the renewable plastic particles entering the hydraulic press 430 into the barrel 420.

[0064] A production control method for an injection molding production line is used to perform the following steps:

[0065] S100, detecting whether there are renewable plastic particles between the fixed heating plate 340 and the corresponding sliding heating plate 350 when the fixed heating plate 340 and the corresponding sliding heating plate 350 rotate to the loading area, if yes, executing S200, if no, executing S300;

[0066] S200, turning on the electric switch to add the renewable plastic particles between the fixed heating plate 340 and the corresponding sliding heating plate 350 at the upper material area;

[0067] S300, electric switch off.

[0068] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0069] The above-described embodiments only express several implementation methods of the present invention, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the scope of the present invention. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the attached claims.

Claims

1. A production control device for an injection molding production line, characterized in that: include: frame; A material storage component, which is used to temporarily store renewable plastic particles; A preheating component, which is arranged below the material storage component and is used to heat the renewable plastic particles entering the material storage component; An injection molding extrusion assembly, the injection molding extrusion assembly is located below the preheating assembly, and the injection molding extrusion assembly is used to extrude the renewable plastic particles entering the preheating assembly into the interior thereof; The preheating assembly includes a bin body and a preheating unit. The preheating unit includes a middle tube, a plurality of fixed heating plates and a plurality of sliding heating plates. The middle tube can rotate around its axis. The plurality of fixed heating plates and the plurality of sliding heating plates are alternately arranged at equal intervals in the circumferential direction of the middle tube. The sliding heating plate can slide along the circumferential direction of the middle tube to keep the interval between it and the fixed heating plate. When the middle tube rotates one circle, the adjacent sliding heating plates and the fixed heating plates pass through the loading area, the extrusion heating area and the discharging area in sequence. When in the loading area, the sliding heating plate and the fixed heating plate receive the material from the material storage assembly and the interval is adjusted to the first interval. When the middle tube rotates along the When the first direction continues to rotate by a first preset angle to reach the extrusion heating zone, the spacing between the sliding heating plate and the fixed heating plate is adjusted to a second spacing and the material sandwiched therebetween is extruded; when the middle bobbin continues to rotate by a second preset angle along the first direction to reach the discharge zone, the spacing between the sliding heating plate and the fixed heating plate is adjusted to a third spacing, and the material sandwiched between the sliding heating plate and the fixed heating plate and reaching the preheating softening degree is discharged, and the third spacing is greater than the second spacing and smaller than the first spacing; there are multiple preheating units, and the multiple preheating units are horizontally spaced along the length direction of the bin body, and each preheating unit has The rotation direction of the middle tube is the same; connecting rods are provided on both sides of the length direction of the sliding heating plate, and an inclined block is provided on the middle tube at a position corresponding to the connecting rod, the inclined block can slide along the axis of the middle tube, and the inclined surface of the inclined block cooperates with the connecting rod stop; a first guide groove is provided on the warehouse body and corresponding to the loading area, a second guide protrusion is provided on the warehouse body and corresponding to the extrusion heating area, a third guide protrusion is provided on the warehouse body and corresponding to the discharge area, a second ball head guide rod is provided on the middle tube, the second ball head guide rod can slide along the axis of the middle tube, and one end of the second ball head guide rod is connected to the inclined block, After the second ball head guide rod rotates one circle following the middle tube, the other end of the second ball head guide rod can slide and cooperate with the first guide groove, the second guide protrusion and the third guide protrusion in sequence; the sliding heating plate can slide along the radial direction of the middle tube; the connecting rod is also provided with a first ball head guide rod, which is set to slide radially along the middle tube, and a star guide wheel is connected to the warehouse body, which is concentrically arranged with the middle tube, and the first ball head guide rod is in sliding contact with the outer peripheral surface of the star guide wheel; the sliding heating plate also includes a plurality of heating plates, which are arranged at intervals along the length direction of the sliding heating plate, and the heating plates are elastic.

2. A production control device for an injection molding production line according to claim 1, characterized in that: The material storage assembly comprises a material storage box and a material guide hopper, and the material guide hopper is provided with an electric switch.

3. A production control device for an injection molding production line according to claim 2, characterized in that: The material storage box is also provided with a vibration source.

4. A production control method for an injection molding production line, using a production control device for an injection molding production line according to any one of claims 1 to 3, characterized in that: To perform the following steps: S100, detecting whether there are renewable plastic particles between the fixed heating plate and the corresponding sliding heating plate when the fixed heating plate and the corresponding sliding heating plate are rotated to the loading area, if yes, executing S200, if no, executing S300; S200, turning on the electric switch to add the renewable plastic particles between the fixed heating plate and the corresponding sliding heating plate at the upper material area; S300, electric switch off.

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