Foaming machine for EPP material packaging box production and use method

Abstract

The invention discloses a foaming machine for producing an EPP material packaging box and a using method, and relates to the technical field of foaming machines. The foaming agent and the catalyst can be gradually released while being stirred by the stirring unit, so that the foaming agent and the catalyst which are mixed can be uniformly dispersed in polypropylene resin particles, and the mixing work of the polypropylene resin particles, the catalyst and the foaming agent can be completed in a short time; the situation that foaming raw materials and additives are accumulated intensively and are difficult to mix quickly is avoided, and a catalyst and a foaming agent output by the stirring pipe have certain initial speeds, so that the raw materials in the foaming tank can be pushed to flow by utilizing impact force of the catalyst and the foaming agent; external air can be conveyed into the foaming tank under the suction action of the first suction mechanism and the second suction mechanism, necessary air is provided for the foaming process, the input air can push foaming raw materials to relatively flow, the stirring effect is achieved, mixed materials are promoted to expand to form foam, and the foaming effect is improved.

Description

Technical Field

[0001] The invention relates to the technical field of foaming machines, and in particular to a foaming machine for producing EPP material packaging boxes and a use method thereof. Background Art

[0002] The EPP material has a large number of independent closed pore structures inside, which makes it have excellent elasticity and energy absorption characteristics. When the packaging box is impacted by external forces, the EPP packaging box can provide good protection for the items. The raw materials for the production of EPP material packaging boxes need to be foamed by a foaming machine before subsequent production operations can be carried out;

[0003] Among them, the addition of blowing agent and catalyst is the key step of foaming. After the addition of the two, bubbles will be generated in the mixed material, causing the mixed material to expand to form foam. The addition of air, together with the blowing agent, causes the mixed material to expand to form foam, thereby improving the foaming effect.

[0004] A foaming machine for sponge production disclosed in the patent application with reference publication number CN219191026U can fully stir the sponge raw material, foaming machine and air by arranging a driving motor and a stirring component, thereby ensuring sufficient contact between the raw materials and increasing the foaming efficiency of the sponge raw material. At the same time, a scraper is arranged at the bottom to prevent the sponge from sticking to the inner wall of the tank after foaming and being difficult to clean, and the internal air intake pipe and nozzle can also evenly deliver air into the tank for reaction, thereby fully increasing the foaming efficiency of the entire device; the entire device can be supported by arranging a fixed frame and a support seat, and a shock-absorbing and buffering component is arranged between the two to achieve the shock-absorbing and buffering effect of the device, thereby avoiding the problem that mechanical parts such as motors and vacuum pumps are prone to vibration during operation, and vibration easily causes uneven foam, affecting the foaming effect of the sponge.

[0005] In the foaming process of the existing foaming agent, since the foaming raw materials and additives such as the foaming agent are added to the foaming machine in a concentrated manner, the foaming raw materials and various additives are concentrated and accumulated in a certain position in the foaming machine, which is prone to stratification. As a result, the foaming raw materials need to be stirred for a long time to be fully mixed, which increases the foaming time; and the stirring and mixing method using only a single stirring rod leads to low stirring efficiency and poor stirring effect. For example, a foaming machine for sponge production with reference to publication number CN219191026U requires manual addition of raw materials and foaming agent, and the stirring and mixing of the raw materials and the foaming agent are completed only by the stirring rod. The concentrated addition of the foaming agent and the raw materials easily leads to the two being concentrated and accumulated in a certain position of the tank body, making it difficult to quickly mix the raw materials and the foaming agent in a short time. Moreover, the single stirring rod requires a lot of time to complete the stirring of the raw materials, thereby reducing the foaming efficiency.

[0006] Therefore, the present invention proposes a foaming machine and a method for using the EPP material packaging box production to solve the above problems. Summary of the invention

[0007] In view of the deficiencies in the prior art, the present invention provides a foaming machine and a method for using EPP material packaging boxes, which solves the problem that the current method of adding foaming raw materials and additives such as foaming agents into the foaming machine in a concentrated manner causes the foaming raw materials and various additives to be concentrated and accumulated in a certain position in the foaming machine, which easily leads to stratification, resulting in the foaming raw materials needing to be stirred for a long time to be fully mixed, thereby increasing the foaming time; and the method of stirring and mixing only by using a single stirring rod leads to low stirring efficiency and poor stirring effect.

[0008] To achieve the above objectives, the present invention is implemented through the following technical solutions: A foaming machine for producing EPP material packaging boxes, comprising an operating table, a mixing barrel assembly for providing space for foaming the EPP material packaging boxes is arranged on the top of the operating table, a mixing mechanism for mixing the packaging box raw materials, a foaming agent, and a catalyst is arranged inside the mixing barrel assembly, and a servo motor for driving the mixing mechanism to rotate is arranged at the bottom of the mixing barrel assembly;

[0009] A No. 1 storage tank assembly and a No. 2 storage tank assembly for storing catalysts and foaming agents are respectively arranged on the top of the operating table and on both sides of the mixing barrel assembly. A No. 1 suction mechanism is arranged between the No. 1 storage tank assembly and the mixing mechanism for quantitatively sucking the catalyst in the No. 1 storage tank assembly into the mixing mechanism, and a No. 2 suction mechanism is arranged between the No. 2 storage tank assembly and the mixing mechanism for quantitatively sucking the foaming agent in the No. 2 storage tank assembly into the mixing mechanism. A driving assembly is also arranged on the top of the mixing mechanism for driving the No. 1 suction mechanism and the No. 2 suction mechanism to perform suction operations.

[0010] Furthermore, the mixing barrel assembly includes a foaming tank fixed on the top of the operating table by a bracket and a partition fixed inside the foaming tank. A cover plate is detachably provided on the top of the foaming tank, and locking devices for locking the position of the cover plate are evenly provided around the outer wall of the foaming tank.

[0011] Furthermore, the structures of the No. 1 storage tank assembly and the No. 2 storage tank assembly are exactly the same. The No. 1 storage tank assembly includes a storage tank fixedly arranged on the top of the operating table by a bracket, a conduit 1 connected to the interior of the storage tank is fixedly arranged on the top of the storage tank, a manual valve 1 for controlling the opening and closing of the conduit is arranged inside the conduit 1, an air pipe is fixedly arranged on the outer wall of the conduit 1, and a manual valve 2 for controlling the opening and closing of the air pipe is fixedly arranged inside the air pipe.

[0012] Furthermore, the mixing mechanism includes a cylinder rotatably arranged inside the foaming tank, the top end of the cylinder rotates through the partition and extends to the outside, a plurality of stirring units for mixing the packaging box raw materials, the catalyst and the foaming agent are evenly arranged on the outer wall of the cylinder, annular grooves are provided on the upper and lower sides of the outer wall of the cylinder, a plurality of through holes are evenly provided on the outer wall of the cylinder and between the two annular grooves, and a premixing component for premixing the catalyst and the foaming agent is sleeved on the outer wall of the cylinder.

[0013] Furthermore, the stirring unit comprises a stirring tube fixedly arranged on the outer wall of the cylinder and connected with the interior thereof, a transmission shaft is rotatably arranged inside the stirring tube through a bracket, and an impeller and a stirring blade are fixedly arranged at both ends of the transmission shaft.

[0014] Furthermore, the premixing assembly includes a premixing barrel rotatably mounted on the outer wall of the barrel and a sealing cover detachably mounted on the top of the premixing barrel, and a No. 1 feed port and a No. 2 feed port are respectively provided on both sides of the outer wall of the premixing barrel, which are respectively used to input different types of liquid foaming raw materials, and a sealing sleeve is provided directly below the premixing barrel, and the sealing sleeve and the premixing barrel are connected by a plurality of connecting pipes, which are used to transport the raw materials in the premixing barrel into the barrel through the connecting pipes.

[0015] Furthermore, the No. 1 suction mechanism includes a second conduit, a piston cylinder connected to the interior of the second conduit is fixedly arranged on the outer wall of the second conduit, and a one-way valve that only allows liquid to flow to the piston cylinder is fixedly arranged inside the second conduit, a piston is slidably arranged inside the piston cylinder, a piston rod is fixedly arranged on the top of the piston, a pressure plate is fixedly arranged on the top of the piston rod, and a spring is slidably arranged on the outer wall of the piston rod and between the pressure plate and the piston cylinder.

[0016] Furthermore, the driving assembly includes a mounting seat, and a driving arm assembly 1 and a driving arm assembly 2 are symmetrically arranged on both sides of the outer wall of the mounting seat. The driving arm assembly 1 includes a support arm fixedly arranged on the outer wall of the mounting seat, and a driving rod slides through the inside of the support arm. The driving rod and the support arm are locked by a fastening bolt. Except for the different lengths of the support arms, the other structures of the driving arm assembly 2 and the driving arm assembly 1 are the same.

[0017] Furthermore, a scale line groove is provided on the outer wall of the driving rod for indicating the current position of the driving rod relative to the supporting arm.

[0018] The present invention also discloses a method for using a foaming machine for producing EPP material packaging boxes, which is used for the foaming machine for producing EPP material packaging boxes. The method comprises the following steps:

[0019] Step 1: quantitatively weigh the polypropylene resin particles of the EPP material packaging box raw material, and set the weighed raw materials aside for use;

[0020] Step 2, putting a fixed amount of polypropylene resin particles weighed in step 1 into the mixing barrel assembly, using the first suction mechanism and the second suction mechanism to respectively suck the catalyst and the foaming agent in the first storage tank assembly and the second storage tank assembly into the mixing mechanism for premixing, and then inputting the mixture of the two into the mixing barrel assembly, and setting the running time of the driving assembly according to the amount of polypropylene resin particles input;

[0021] Step 3, the servo motor drives the mixing mechanism to stir the mixture of polypropylene resin particles, catalyst, and foaming agent. The servo motor stops running immediately after reaching the set time, and then the feed channels of the No. 1 suction mechanism and the No. 2 suction mechanism are closed, and then the servo motor is started again to drive the mixing mechanism for stirring.

[0022] The present invention provides a foaming machine and a method for using the foaming machine for producing EPP packaging boxes. Compared with the prior art, it has the following beneficial effects:

[0023] 1. A foaming machine for producing EPP packaging boxes and a method for using the same. By providing a cylinder and a stirring unit, a catalyst and a foaming agent can be output through a plurality of stirring units. The foaming agent and the catalyst can be gradually released while the stirring units are stirring, so that the mixed foaming agent and the catalyst can be evenly dispersed in the polypropylene resin particles, so that the mixing of the polypropylene resin particles, the catalyst and the foaming agent can be completed in a short time, avoiding the situation where the foaming raw materials and additives are difficult to mix quickly due to concentrated accumulation;

[0024] Secondly, the liquid raw materials that have undergone preliminary mixing can drive the impeller to rotate when flowing through the stirring tube, so that the stirring blades can be driven to rotate synchronously while the impeller rotates, and the catalyst, foaming agent and polypropylene resin particles in the foaming tank are mixed and stirred. Moreover, the catalyst and foaming agent output through the stirring tube have a certain initial velocity, and their impact force can be used to drive the flow of raw materials in the foaming tank to achieve re-stirring of the raw materials, so that multiple pre-stirring can be achieved while inputting the foaming agent and the catalyst; secondly, the stirring function of the stirring tube is extruded in conjunction with the rotation of the stirring blades to achieve a double stirring effect on the sponge foaming raw materials, which greatly shortens the mixing time of the foaming raw materials and the catalyst and foaming agent, and improves the foaming efficiency of the EPP material packaging box production.

[0025] 2. A foaming machine for producing EPP material packaging boxes and a method of using the same. By setting a mixing mechanism, when the No. 1 suction mechanism or the No. 2 suction mechanism delivers liquid raw materials to the premixing barrel, the liquid raw materials squeezed into the premixing barrel in a short time have greater kinetic energy. This part of the kinetic energy can promote the relative flow of the catalyst and the foaming agent in the premixing barrel, thereby forming a rotating vortex, thereby achieving the effect of mixing and stirring the catalyst and the foaming agent in advance.

[0026] 3. A foaming machine for producing EPP material packaging boxes and a method of using the same. By setting a No. 1 storage tank assembly and a No. 2 storage tank assembly, after the sponge foaming raw material in the foaming tank reaches a certain amount, the first manual valve on the pipe wall is opened and the second manual valve is used to stop conveying the catalyst and the foaming agent into the foaming tank. External air can be conveyed into the foaming tank under the suction action of the No. 1 suction mechanism and the No. 2 suction mechanism, thereby providing the necessary air for the foaming process. Moreover, the input air can promote the relative flow of the foaming raw materials, thereby achieving a stirring effect, causing the mixed material to expand to form foam, and improving the foaming effect.

[0027] 4. A foaming machine for producing EPP packaging boxes and a method of using the same. By setting a No. 1 suction mechanism and a No. 2 suction mechanism and a driving assembly, the driving rod can be used to push the pressure plate downward when the driving assembly rotates, so that the piston can be driven to move back and forth along the piston cylinder, so as to achieve the effect of quantitatively extracting raw materials from the No. 1 storage tank assembly or the No. 2 storage tank assembly and pumping the raw materials into the foaming tank. It is only necessary to weigh the main raw material, polypropylene resin particles, and there is no need to manually weigh other raw materials related to the foaming process repeatedly, thereby reducing the situation of ratio errors caused by manual operation errors;

[0028] Since the lengths of the support arms in the driving arm assembly 1 and the driving arm assembly 2 in the driving assembly are different, and the rotation radius of the two support arms corresponds to driving the first suction mechanism and the second suction mechanism respectively, the driving assembly can drive the first suction mechanism and the second suction mechanism separately when rotating, so as to achieve the purpose of using the same driving assembly to drive the first suction mechanism and the second suction mechanism to operate at the same time, and realize the effect of continuously conveying the foaming raw material to the foaming tank;

[0029] The driving assembly and the mixing mechanism are driven by the same servo motor, and the feeding operation can be performed simultaneously while the foaming raw materials are being stirred. This not only saves foaming time, but also eliminates the need to set up separate power devices for the feeding process and the stirring process, thereby saving the cost of setting up the power device, making the structure simpler and facilitating subsequent inspection and maintenance work. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a schematic diagram of the first overall three-dimensional structure of the present invention;

[0031] Figure 2 It is a schematic diagram of the cross-sectional structure of the present invention;

[0032] Figure 3 For the present invention Figure 2 A schematic diagram of the enlarged structure of part A;

[0033] Figure 4 This is a schematic diagram of the structure of the present invention without the operating table and the foaming tank;

[0034] Figure 5 It is a cross-sectional structural schematic diagram of the mixing mechanism of the present invention;

[0035] Figure 6 For the present invention Figure 5 A schematic diagram of the enlarged structure of part B in FIG.

[0036] Figure 7 This is a schematic cross-sectional structural diagram of a stirring unit of the present invention;

[0037] Figure 8 For the present invention Figure 7 A schematic diagram of the enlarged structure of part C in FIG.

[0038] Fig. 9 This is a schematic cross-sectional view of the premixing assembly of the present invention;

[0039] Fig.10 This is a schematic diagram of the structure of the No. 1 storage tank assembly of the present invention;

[0040] Fig.11 This is a schematic cross-sectional structural diagram of the first suction mechanism of the present invention;

[0041] Fig.12 It is a schematic diagram of the structure of the driving component of the present invention.

[0042] In the figure: 1, operating table; 2, foaming tank; 3, partition; 4, cover plate; 5, locking device; 51, carrier frame; 52, screw; 53, hand wheel; 54, pressing plate; 6, mixing mechanism; 61, cylinder; 62, stirring unit; 621, stirring tube; 622, transmission shaft; 623, impeller; 624, stirring blade; 63, annular groove; 64, through hole; 65, premixing assembly; 651, premixing cylinder; 652, No. 1 feed port; 653, No. 2 feed port; 654, sealing sleeve; 655, connecting Tube; 7, servo motor; 8, No. 1 storage tank assembly; 81, storage tank; 82, conduit one; 83, manual valve one; 84, air pipe; 85, manual valve two; 9, No. 2 storage tank assembly; 10, No. 1 suction mechanism; 101, conduit two; 102, piston cylinder; 103, one-way valve; 104, piston; 105, piston rod; 106, pressure plate; 107, spring; 11, No. 2 suction mechanism; 12, drive assembly; 121, mounting seat; 122, support arm; 123, drive rod. DETAILED DESCRIPTION

[0043] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0044] The present invention provides two technical solutions: a foaming machine for producing EPP material packaging boxes, specifically including the following embodiments:

[0045] like Figures 1 to 4 , Figures 10 to 12 The first embodiment is shown, a foaming machine for producing EPP material packaging boxes, including an operating table 1, a mixing barrel assembly for providing space for EPP material packaging box production and foaming is arranged on the top of the operating table 1, a mixing mechanism 6 for mixing the catalyst and the foaming agent is arranged inside the mixing barrel assembly, and a servo motor 7 for driving the mixing mechanism 6 to rotate is arranged at the bottom of the mixing barrel assembly, and a No. 1 storage tank for storing the catalyst and the foaming agent is arranged on the top of the operating table 1 and on both sides of the mixing barrel assembly Component 8, No. 2 storage tank component 9, a No. 1 suction mechanism 10 is arranged between the No. 1 storage tank component 8 and the mixing mechanism 6, which is used to quantitatively suck the catalyst in the No. 1 storage tank component 8 into the mixing mechanism 6, and a No. 2 suction mechanism 11 is arranged between the No. 2 storage tank component 9 and the mixing mechanism 6, which is used to quantitatively suck the foaming agent in the No. 2 storage tank component 9 into the mixing mechanism 6, and a driving component 12 is also arranged at the top of the mixing mechanism 6, which is used to drive the No. 1 suction mechanism 10 and the No. 2 suction mechanism 11 to perform suction operations. A control box for controlling the operation of the servo motor 7 is fixedly arranged on the top of the operating table 1, and the control box and the servo motor 7 are electrically connected through a wire. A ladder is fixedly arranged on one side of the outer wall of the foaming tank 2 to facilitate the adjustment of the driving component 12.

[0046] The locking device 5 is a known technology, and its structure and operation principle are not described in detail here. It can be a bolt or other component that can lock the cover plate 4 and the foaming tank 2.

[0047] The mixing barrel assembly includes a foaming tank 2 fixedly arranged on the top of the operating table 1 by a bracket and a partition 3 fixedly arranged inside the foaming tank 2. A cover plate 4 is detachably arranged on the top of the foaming tank 2. An exhaust hole is also provided on the top of the cover plate 4 for exhausting the gas in the foaming tank 2, and locking devices 5 for locking the position of the cover plate 4 are evenly arranged around the outer wall of the foaming tank 2. A discharge pipe connected to the inside of the foaming tank 2 is fixedly arranged on one side of the bottom, and a valve is fixedly arranged in the discharge pipe for controlling the opening and closing of the discharge pipe. An exhaust hole is opened on the upper side of one side of the outer wall of the foaming tank 2. The partition 3 divides the inside of the foaming tank 2 into two independent spaces. The space below the partition 3 is used for mixing the liquid sponge raw material and the foaming agent, and the space above the partition 3 is used to facilitate the adjustment of the drive assembly 12.

[0048] The structures of the No. 1 storage tank assembly 8 and the No. 2 storage tank assembly 9 are exactly the same. The No. 1 storage tank assembly 8 includes a storage tank 81 fixedly arranged on the top of the operating table 1 by a bracket. A conduit 1 82 connected to the inside of the storage tank 81 is fixedly arranged on the top of the storage tank 81. A manual valve 1 83 for controlling its opening and closing is arranged inside the conduit 1 82. An air pipe 84 is fixedly arranged on the outer wall of the conduit 1 82. A manual valve 2 85 for controlling its opening and closing is fixedly arranged inside the air pipe 84. A dustproof net is fixedly arranged at one end of the air pipe 84 away from the conduit 1 82 to filter the air entering the air pipe 84. A material injection pipe is fixedly arranged on one side of the outer wall of the storage tank 81 to replenish raw materials into the storage tank 81.

[0049] The structure of the No. 2 suction mechanism 11 is the same as that of the No. 1 suction mechanism 10. The No. 1 suction mechanism 10 includes a second conduit 101, which is fixedly connected to the first conduit 82. The other end of the second conduit 101 is fixedly connected to the No. 2 feed port 653. A piston cylinder 102 connected to the interior of the second conduit 101 is fixedly provided on the outer wall of the second conduit 101. A one-way valve 103 that only allows liquid to flow to the piston cylinder 102 is fixedly provided inside the second conduit 101. A piston 104 is slidably provided inside the piston cylinder 102. A piston rod 105 is fixedly provided on the top of the piston 104. A pressure plate 106 is fixedly provided on the top of the piston rod 105. Both ends of the pressure plate 106 are chamfered. A spring 107 is provided on the outer wall of the piston rod 105 and is located between the pressure plate 106 and the piston cylinder 102.

[0050] The driving assembly 12 includes a mounting seat 121, which is fixedly arranged at the top of the cylinder 61. A driving arm assembly 1 and a driving arm assembly 2 are symmetrically arranged on both sides of the outer wall of the mounting seat 121. The driving arm assembly 1 includes a support arm 122 fixedly arranged on the outer wall of the mounting seat 121. A driving rod 123 slides through the inside of the support arm 122. The driving rod 123 and the support arm 122 are locked by fastening bolts. Except for the different lengths of the support arm 122, the other structures between the driving arm assembly 2 and the driving arm assembly 1 are the same. A scale line groove is opened on the outer wall of the driving rod 123 to indicate the current position of the driving rod 123 relative to the support arm 122.

[0051] The driving arm assembly 1 and the driving arm assembly 2 correspond to driving the suction mechanism 10 and the suction mechanism 11, respectively, that is, the rotation radius of the driving arm assembly 1 and the driving arm assembly 2 are respectively adapted to the suction mechanism 10 and the suction mechanism 11. The initial position of the driving rod 123 is a known value, and it is convenient to adjust it again according to the initial position of the driving rod 123. It should be noted that a scale groove is provided on the outer wall of the driving rod 123 to indicate the height of the driving rod. The adjustment rule of the driving rod 123 is: within a certain height adjustment range, the driving rod 123 moves upward by one centimeter, and the distance that the piston 104 moves downward is reduced by one centimeter, that is, the amount of raw material sucked by the suction mechanism 10 or the suction mechanism 11 is reduced by one hundred milliliters. On the contrary, the driving rod 123 moves downward by one centimeter, and the distance that the piston 104 moves downward is increased by one centimeter, and the amount of raw material sucked by the suction mechanism 10 or the suction mechanism 11 is increased by one hundred milliliters.

[0052] like Figure 5-Figure 9 The second embodiment is shown, which differs from the first embodiment in that: the mixing mechanism 6 includes a cylinder 61 rotatably arranged inside the foaming tank 2, the top of the cylinder 61 rotates through the partition 3 and extends to the outside, a plurality of stirring units 62 for mixing the packaging box raw materials, the catalyst and the foaming agent are evenly arranged on the outer wall of the cylinder 61, annular grooves 63 are provided on the upper and lower sides of the outer wall of the cylinder 61, a plurality of through holes 64 are evenly provided on the outer wall of the cylinder 61 and located between the two annular grooves 63, and a premixing assembly 65 for premixing the catalyst and the foaming agent is sleeved on the outer wall of the cylinder 61. The stirring unit 62 includes a stirring tube 621 fixedly arranged on the outer wall of the cylinder 61 and connected to the inside thereof, a transmission shaft 622 is rotatably arranged inside the stirring tube 621 through a bracket, and an impeller 623 and a stirring blade 624 are fixedly arranged at both ends of the transmission shaft 622.

[0053] The premixing assembly 65 includes a premixing barrel 651 rotatably mounted on the outer wall of the barrel 61 and a sealing cover detachably mounted on the top of the premixing barrel 651. A first feed port 652 and a second feed port 653 are respectively provided on both sides of the outer wall of the premixing barrel 651, which are respectively used to input different types of liquid foaming raw materials, and a sealing sleeve 654 is provided directly below the premixing barrel 651. The sealing sleeve 654 and the premixing barrel 651 are connected by a plurality of connecting pipes 655, which are used to transport the raw materials in the premixing barrel 651 to the barrel 61 through the connecting pipes 655. The sealing sleeve 654 is rotatably mounted on the outer wall of the barrel 61, and the two ends of the sealing sleeve 654 are respectively sealed and rotated in the upper and lower annular grooves 63, and the catalyst or foaming agent can enter the barrel 61 through the connecting pipe 655 and the through hole 64.

[0054] The embodiment of the present invention further provides a method for using a foaming machine for producing EPP material packaging boxes, which is used for the foaming machine for producing EPP material packaging boxes. The method comprises the following steps:

[0055] Step 1: quantitatively weigh the polypropylene resin particles of the EPP material packaging box raw material, and set the weighed raw materials aside for use;

[0056] Step 2: Add a fixed amount of polypropylene resin particles weighed in step 1 into the mixing barrel assembly, and use the first suction mechanism 10 and the second suction mechanism 11 to respectively suck the catalyst and the foaming agent in the first storage tank assembly 8 and the second storage tank assembly 9 into the mixing mechanism 6 for premixing, and then input the mixture of the two into the mixing barrel assembly, and set the operating time of the driving assembly 12 according to the amount of polypropylene resin particles input;

[0057] Step 3, the servo motor 7 drives the mixing mechanism 6 to stir the mixture of polypropylene resin particles, catalyst, and foaming agent. The servo motor 7 stops running immediately after reaching the set time, and then the feeding channels of the No. 1 suction mechanism 10 and the No. 2 suction mechanism 11 are closed, and then the servo motor 7 is started again to drive the mixing mechanism 6 to stir.

[0058] The specific process is as follows: first, unlocking the cover plate 4 and the foaming tank 2 by the locking device 5, removing the cover plate 4 from the top of the foaming tank 2, and then putting a fixed amount of polypropylene resin particles weighed quantitatively into the foaming tank 2;

[0059] Next, sufficient amount of catalyst and foaming agent are added through the injection ports on the outer walls of the No. 1 storage tank assembly 8 and the No. 2 storage tank assembly 9, and then the manual valve 1 83 in the No. 1 storage tank assembly 8 and the No. 2 storage tank assembly 9 is opened, and the manual valve 2 85 is closed;

[0060] Next, the amount of foaming agent and catalyst to be input into the foaming tank 2 is determined according to the corresponding ratio of the amount of polypropylene resin particle raw material put into the foaming tank 2. Since the initial height of the driving rod 123 is a known fixed value, and since the outer diameter of the piston 104 and the inner diameter of the piston cylinder 102 are matched and are both preset fixed values, that is, after the piston 104 drops to a preset height along with the piston rod 105, and can be reset under the elastic force of the spring 107, the amount of catalyst and the amount of foaming agent sucked in a stroke of the piston 104 are both fixed values, and the number of times the driving component 12 pushes the No. 1 suction mechanism 10 and the No. 2 suction mechanism 11 respectively within one minute is also a known fixed value. Therefore, the running time of the No. 1 suction mechanism 10 and the No. 2 suction mechanism 11 is controlled according to the amount of catalyst or the amount of foaming agent sucked in one stroke of the piston 104 and the number of times the driving component 12 completes one stroke within one minute, that is, the servo motor is controlled. 7 The running time in the process of pumping catalyst and foaming agent; and the height of the bottom end relative to the pressure plate in the No. 1 suction mechanism 10 and the No. 2 suction mechanism 11 can also be adjusted within a certain range according to the scale groove on the surface of the driving rod 123. According to the adjustment rules, based on the initial position of the driving rod 123 and within a certain height adjustment range, the driving rod 123 moves upward by one centimeter, and the distance that the piston 104 moves downward is reduced by one centimeter, that is, the amount of raw material pumped by the No. 1 suction mechanism 10 or the No. 2 suction mechanism 11 is reduced by one hundred milliliters. Conversely, the driving rod 123 moves downward by one centimeter, and the distance that the piston 104 moves downward is increased by one centimeter, and the amount of raw material pumped by the No. 1 suction mechanism 10 or the No. 2 suction mechanism 11 is increased by one hundred milliliters. Therefore, the amount of catalyst or foaming agent that can be pumped by a single stroke of the piston 104 can also be changed according to this adjustment method, thereby changing the time for adding the catalyst or foaming agent;

[0061] When adjusting the height of the driving rod 123, loosen the fastening bolts that fix the driving rod 123, and then adjust it to a suitable position according to the adjustment rules of the driving rod 123. After the adjustment is completed, use the fastening bolts to lock the position of the driving rod 123 again;

[0062] It should be noted here that when the No. 1 suction mechanism 10 and the No. 2 suction mechanism 11 just start to operate, their interior is in a hollow state and is not filled with catalyst or foaming agent. Therefore, within one minute when the driving component 12 just starts to drive the No. 1 suction mechanism 10 and the No. 2 suction mechanism 11 to operate, the catalyst and foaming agent in the No. 1 storage tank component 8 and the No. 2 storage tank component 9 are extracted and filled with the conduit 2 101 and the piston cylinder 102 in the No. 1 suction mechanism 10 and the No. 2 suction mechanism 11 and the conduit 1 82 in the No. 1 storage tank component 8 and the No. 2 storage tank component 9. Therefore, the final statistical amount of input catalyst and foaming agent should remove the time used for this part;

[0063] Next, the servo motor 7 is started to drive the cylinder 61 to rotate at a uniform speed. Since the mounting seat 121 is fixed to the top of the cylinder 61, the driving assembly 12 as a whole can rotate synchronously with the cylinder 61. The driving arm assembly 1 and the driving arm assembly 2 correspond to driving the No. 1 suction mechanism 10 and the No. 2 suction mechanism 11, respectively, that is, the rotation radius of the driving arm assembly 1 and the driving arm assembly 2 are respectively adapted to the No. 1 suction mechanism 10 and the No. 2 suction mechanism 11. The driving rod 123 in the driving arm assembly 1 contacts the chamfered surface of one end of the pressure plate 106 in the No. 1 suction mechanism 10 during the rotation process, and gradually pushes the pressure plate 106 downward. , the piston rod 105 pushes the piston 104 downward for a certain distance, and the fixed amount of catalyst located inside the piston cylinder 102 is squeezed out under pressure, and quickly enters the premixing cylinder 651 through the internal conduit 101 and the No. 1 feed port 652 at the corresponding position, and in a very short time, the driving rod 123 in the driving arm assembly 2 drives the piston 104 in the No. 2 suction mechanism 11 to move downward, and squeezes out the fixed amount of foaming agent in the piston cylinder 102 in the No. 2 suction mechanism 11 through the conduit 101, and the foaming agent enters the premixing cylinder 651 through the No. 2 feed port 653, and the catalyst that has just entered the premixing cylinder 651 The flow rate of the catalyst and foaming agent is relatively high, and the entrance positions of the No. 1 feed port 652 and the No. 2 feed port 653 are staggered, so that the two can push the catalyst and foaming agent in the premixing cylinder 651 to rotate in a directional manner while entering the premixing cylinder, so that the catalyst and the foaming agent are preliminarily mixed during the rotation process; the preliminarily mixed catalyst and foaming agent enter the cylinder 61 through the connecting pipe 655 and the through hole 64 on the outer wall of the cylinder 61; as the amount of catalyst and liquid foaming agent entering the cylinder 61 increases, the internal pressure gradually increases, and the catalyst and foaming agent are output through the stirring tube 621, and when they flow out of the stirring tube When the impeller 621 is connected to the port 621, the flowing catalyst and foaming agent drive the impeller 623 to rotate. Since the impeller 623 and the stirring blade 624 are fixed together at both ends of the transmission shaft 622, on the basis of stirring the catalyst, the liquid foaming agent and the polypropylene resin particles in the stirring tube 621, the impeller 623 can drive the stirring blade 624 to stir the mixture of the catalyst, the liquid foaming agent and the polypropylene resin particles again when it rotates. When the servo motor 7 reaches the preset time for adding the catalyst and the foaming agent, it stops running immediately. At this time, the amount of the catalyst and the liquid foaming agent is in a preset ratio with the amount of the polypropylene resin particle raw material in the foaming tank 2;

[0064] Next, close the manual valve 1 83 in the No. 1 storage tank assembly 8 and the No. 2 storage tank assembly 9 respectively, and open the manual valve 2 85; then, start the servo motor 7 again to drive the cylinder 61 to rotate. At this time, the No. 2 suction mechanism 11 and the No. 1 suction mechanism 10 are in the same working state as the suction catalyst and foaming agent. The difference from before is that since the manual valve 1 83 in the No. 1 storage tank assembly 8 and the No. 2 storage tank assembly 9 is closed, the catalyst and foaming agent delivery channels are closed, and only external air enters the cylinder 61 through the air pipe 84, and the air flows out through the stirring pipe 621. The flowing air drives the impeller 623 to rotate again, so that the stirring blade 624 rotates under the drive of the impeller 623, and the raw materials in the foaming tank 2 are stirred again; and the air output through the end of the stirring pipe 621 can drive the catalyst, liquid foaming agent and polypropylene resin particles to roll, thereby completing multiple stirring of the catalyst, liquid foaming agent and polypropylene resin particles.

[0065] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0066] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A foaming machine for producing EPP packaging boxes, comprising an operating table, characterized in that: A mixing barrel assembly is provided on the top of the operating table to provide space for the production and foaming of EPP material packaging boxes. A mixing mechanism is provided inside the mixing barrel assembly to mix the packaging box raw materials, foaming agent and catalyst, and a servo motor is provided at the bottom of the mixing barrel assembly to drive the mixing mechanism to rotate; A No. 1 storage tank assembly and a No. 2 storage tank assembly for storing catalysts and foaming agents are respectively arranged on the top of the operating table and on both sides of the mixing barrel assembly. A No. 1 suction mechanism is arranged between the No. 1 storage tank assembly and the mixing mechanism for quantitatively sucking the catalyst in the No. 1 storage tank assembly into the mixing mechanism, and a No. 2 suction mechanism is arranged between the No. 2 storage tank assembly and the mixing mechanism for quantitatively sucking the foaming agent in the No. 2 storage tank assembly into the mixing mechanism. A driving assembly is also arranged on the top of the mixing mechanism for driving the No. 1 suction mechanism and the No. 2 suction mechanism to perform suction operations.

2. The foaming machine for producing EPP packaging boxes according to claim 1, characterized in that: The mixing barrel assembly includes a foaming tank fixedly arranged on the top of the operating table by a bracket and a partition fixedly arranged inside the foaming tank. A cover plate is detachably arranged on the top of the foaming tank, and locking devices for locking the position of the cover plate are evenly arranged around the outer wall of the foaming tank.

3. The foaming machine for producing EPP packaging boxes according to claim 1, characterized in that: The structures of the No. 1 storage tank assembly and the No. 2 storage tank assembly are exactly the same. The No. 1 storage tank assembly includes a storage tank fixedly arranged on the top of the operating table by a bracket, a conduit 1 connected to the interior of the storage tank is fixedly arranged on the top of the storage tank, a manual valve 1 for controlling the opening and closing of the conduit is arranged inside the conduit 1, an air pipe is fixedly arranged on the outer wall of the conduit 1, and a manual valve 2 for controlling the opening and closing of the conduit is fixedly arranged inside the air pipe.

4. The foaming machine for producing EPP packaging boxes according to claim 2, characterized in that: The mixing mechanism includes a cylinder rotatably arranged inside the foaming tank, the top end of the cylinder rotates through the partition and extends to the outside, a plurality of stirring units for mixing packaging box raw materials, catalysts and foaming agents are evenly arranged on the outer wall of the cylinder, annular grooves are provided on the upper and lower sides of the outer wall of the cylinder, a plurality of through holes are evenly provided on the outer wall of the cylinder and located between the two annular grooves, and a premixing component for premixing the catalyst and the foaming agent is sleeved on the outer wall of the cylinder.

5. The foaming machine for producing EPP packaging boxes according to claim 4, characterized in that: The stirring unit comprises a stirring tube fixedly arranged on the outer wall of the cylinder and connected with the interior thereof, a transmission shaft is rotatably arranged inside the stirring tube through a bracket, and an impeller and a stirring blade are fixedly arranged at both ends of the transmission shaft.

6. The foaming machine for producing EPP packaging boxes according to claim 4, characterized in that: The premixing assembly includes a premixing barrel rotatably sleeved on the outer wall of the barrel and a sealing cover detachably arranged on the top of the premixing barrel. A first feed port and a second feed port are respectively provided on both sides of the outer wall of the premixing barrel, which are respectively used to input different types of liquid foaming raw materials, and a sealing sleeve is provided directly below the premixing barrel. The sealing sleeve and the premixing barrel are connected by a plurality of connecting pipes, which are used to transport the raw materials in the premixing barrel into the barrel through the connecting pipes.

7. The foaming machine for producing EPP packaging boxes according to claim 1, characterized in that: The No. 1 suction mechanism includes a conduit 2, on the outer wall of which a piston cylinder connected to the interior is fixedly arranged, and inside the conduit 2 a one-way valve that only allows liquid to flow to the piston cylinder is fixedly arranged, a piston is slidably arranged inside the piston cylinder, a piston rod is fixedly arranged at the top of the piston, a pressure plate is fixedly arranged at the top of the piston rod, and a spring is slidably sleeved on the outer wall of the piston rod and located between the pressure plate and the piston cylinder.

8. The foaming machine for producing EPP packaging boxes according to claim 1, characterized in that: The driving assembly includes a mounting seat, and a driving arm assembly 1 and a driving arm assembly 2 are symmetrically arranged on both sides of the outer wall of the mounting seat. The driving arm assembly 1 includes a support arm fixedly arranged on the outer wall of the mounting seat, and a driving rod slides through the inside of the support arm. The driving rod and the support arm are locked by a fastening bolt. Except for the different lengths of the support arms, the other structures of the driving arm assembly 2 and the driving arm assembly 1 are the same.

9. The foaming machine for producing EPP packaging boxes according to claim 8, characterized in that: A scale line groove is provided on the outer wall of the driving rod for indicating the current position of the driving rod relative to the supporting arm.

10. A method for using a foaming machine for producing EPP material packaging boxes, characterized in that: A foaming machine for producing EPP packaging boxes as claimed in any one of claims 1 to 9, the method comprising the following steps: Step 1: quantitatively weigh the polypropylene resin particles of the EPP material packaging box raw material, and set the weighed raw materials aside for use; Step 2, putting a fixed amount of polypropylene resin particles weighed in step 1 into the mixing barrel assembly, using the first suction mechanism and the second suction mechanism to respectively suck the catalyst and the foaming agent in the first storage tank assembly and the second storage tank assembly into the mixing mechanism for premixing, and then inputting the mixture of the two into the mixing barrel assembly, and setting the running time of the driving assembly according to the amount of polypropylene resin particles input; Step 3, the servo motor drives the mixing mechanism to stir the mixture of polypropylene resin particles, catalyst, and foaming agent. The servo motor stops running immediately after reaching the set time, and then the feed channels of the No. 1 suction mechanism and the No. 2 suction mechanism are closed, and then the servo motor is started again to drive the mixing mechanism for stirring.

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