Foam plastic packaging material pre-foaming device and foaming method thereof

Abstract

The invention relates to the technical field of foam processing, in particular to a foam plastic packing material pre-foaming device and a foaming method thereof.The foam plastic packing material pre-foaming device comprises a base, a pre-foaming cylinder is fixed to the top of the base, and the bottom of the pre-foaming cylinder communicates with an external high-temperature steam generating mechanism through a communicating mechanism. According to the pre-foaming device, pre-foaming materials fully reacted at the bottom of the interior of the pre-foaming cylinder are conveyed upwards through the pre-foaming material conveying and turning mechanism, and in the upward conveying process of the pre-foaming materials, the pre-foaming materials at the bottom of the pre-foaming cylinder flow upwards, so that a certain space is reserved at the bottom of the pre-foaming cylinder; therefore, the pre-expansion materials which are in less contact with high-temperature steam above the pre-expansion cylinder can flow to the space below the pre-expansion cylinder, so that the pre-expansion materials above the pre-expansion cylinder can be fully absorbed and reacted with the high-temperature steam, and the pre-expansion materials at different parts in the pre-expansion cylinder can be fully contacted with the high-temperature steam to be expanded.

Description

Technical Field

[0001] The invention relates to the field of foam processing, and in particular to a foam packaging material pre-foaming device and a foaming method thereof. Background Art

[0002] Foam pre-expander is mainly used to produce plastic foam. In the plastic foam production process, the plastic foam raw materials can be foamed according to product requirements to obtain expanded products.

[0003] The prior art discloses some invention patents in the field of foam plastic foaming. The Chinese patent with application number 202010686321.7 discloses an intermittent pre-expanding machine for uniformly pre-expanded EPS, which belongs to the technical field of intermittent pre-expanding machines and comprises a discharge box and an air outlet pipe. A lifting device is arranged inside the discharge box, and a stirring device is arranged on the upper side of the lifting device. A discharge mechanism is arranged outside the discharge box. A pre-expanding cylinder (2) is arranged on the front side of the top of the discharge box, and circulating air supply equipment is arranged on the left and right sides of the pre-expanding cylinder (2). A feeding mechanism is arranged on the top of the pre-expanding cylinder (2). A high-temperature steam device is arranged at the rear of the discharge box, and the high-temperature steam device is fixed on the rear side of the top of the discharge box.

[0004] In the production process of a factory, a pre-expander is generally required to perform an expansion process on the pre-expander. Since the pre-expander is generally expanded by high-temperature steam generated by a high-temperature steam generator and then in contact with the pre-expander, and the high-temperature steam is generally transported upward from the bottom of the device, the pre-expander at the bottom will first be in contact with the high-temperature steam and expanded during the process of the high-temperature steam device transporting the high-temperature steam from bottom to top, and the volume of the pre-expander increases after expansion, thereby compressing the space at the bottom of the pre-expander cylinder (2), resulting in a reduction in the high-temperature steam flowing upward, which in turn causes the pre-expander at the top to be heated unevenly, resulting in a poor final expansion effect. Summary of the invention

[0005] The purpose of the present invention is to solve the shortcomings of the prior art and to propose a foam packaging material pre-foaming device and a foaming method thereof.

[0006] To achieve the above purpose, the technical solution adopted by the present invention is: a foam packaging material pre-foaming device, comprising a base, a pre-foaming cylinder is fixed on the top of the base, and the bottom of the pre-foaming cylinder is connected to an external high-temperature steam generating mechanism through a connecting mechanism; A cap is fixedly mounted on the top of the pre-frothing cylinder, and a feeding mechanism is arranged on the top outer wall of the cap, and the feeding mechanism is used to convey an appropriate amount of pre-frothing material into the interior of the pre-frothing cylinder; A mounting seat is fixed at the center of the top of the cap, a motor is fixed on the top of the mounting seat, a rotating rod is fixed after the output shaft end of the motor passes through the cap, the rotating rod is located inside the pre-fermenting cylinder, and a pre-fermenting material conveying and turning mechanism is provided at the bottom of the rotating rod. After the pre-fermenting material absorbs and reacts with the high-temperature steam for a period of time, the pre-fermenting material conveying and turning mechanism is used to convey and turn the pre-fermenting material at the bottom from bottom to top; The outer wall of the pre-expanding cylinder is fixedly connected with a discharge valve.

[0007] Preferably, the connecting mechanism includes an air storage tank and two air supply pipes, the two air supply pipes are fixedly connected to the bottom surface inside the pre-expanding cylinder, air outlet grooves are provided on opposite sides of the two air supply pipes, the air storage tank is provided on the top of the base, the bottom end of the air supply pipe is connected to the air storage tank, the bottom end of the air storage tank is connected to an external high-temperature steam generating mechanism through a steam pipe, and a plurality of one-way air inlet valves are fixedly connected to the bottom of the pre-expanding cylinder, and the bottoms of all the one-way air inlet valves are connected to the air storage tank.

[0008] Preferably, the pre-made material conveying and flipping mechanism includes a reciprocating screw, the top end of the reciprocating screw is fixedly connected to the bottom end of the rotating rod, the bottom end of the reciprocating screw is fixed with a rotating column, the bottom of the rotating column is fixed with a connecting rod, the outer wall of the connecting rod is fixedly connected with a spiral blade, the outer wall of the reciprocating screw is threadedly connected with a threaded seat, and limit adjustment mechanisms are arranged between the side walls of the threaded seat and the two air outlet grooves, and flipping mechanisms are symmetrically arranged on the side walls of the threaded seat. When the threaded seat reciprocates, the flipping mechanism is used to push the pre-made material on the upper part of the pre-made cylinder downward first, and then flip it to both sides, and the limit adjustment mechanism is used to limit the threaded seat.

[0009] Preferably, the limit adjustment mechanism includes a limit rod, one end of which is fixedly connected to a side wall of the threaded seat, and the other end of the limit rod passes through the air outlet groove and is fixed with an adjustment semicircular plate, and the adjustment semicircular plate is slidably connected to the inside of the air pipe.

[0010] Preferably, the flipping mechanism includes a fixed groove, the fixed groove is opened on one side wall of the threaded seat, the fixed groove is rotatably connected with a flap inside, the bottom of the flap is slidably connected with a sliding block, a first spring is fixed between the sliding block and the fixed groove, an arc plate is fixed on the end of the flap away from the threaded seat, an arc shielding plate is fixed on the end of the arc plate away from the threaded seat, a sliding groove is opened at the bottom of the arc plate, the sliding groove is slidably connected with a sliding block, the side of the sliding block away from the arc plate is rotatably connected with a support rod, and a pushing mechanism is provided on the end of the support rod away from the arc plate, and after the arc plate moves downward a certain distance, the pushing mechanism is used to drive the support rod to move upward relative to the threaded seat.

[0011] Preferably, the pushing mechanism includes a sliding sleeve and a sleeve, the sliding sleeve being arranged on the outer wall of the reciprocating screw, the outer wall of the sliding sleeve being fixedly connected to the end of the support rod away from the arc plate, the bottom of the sliding sleeve being fixed with a second spring and a connecting sleeve, the second spring being located inside the connecting sleeve, the bottom end of the second spring being fixed with a sliding circular plate, the sleeve being fixedly connected to the bottom of the threaded seat through a bracket, the outer ring of the sliding circular plate being slidably connected to the inner wall of the sleeve, the bottom end of the sliding circular plate passing through the sleeve and extending to the bottom of the sleeve, a locking mechanism being arranged between the cover cap and the inner wall of the sleeve, and the locking mechanism being used to limit and store force on the connecting sleeve during the downward movement of the sliding circular plate.

[0012] Preferably, the engaging mechanism includes an engaging groove, a pushing rod, a return rod and a through hole, the pushing rod is fixedly connected to the top of the sliding circular plate, the top of the return rod is fixed to the inner top surface of the cover cap, the through hole is opened through the top of the threaded seat, and the bottom end of the return rod contacts the top of the sliding sleeve after passing through the through hole, the engaging groove is opened on the outer wall of the connecting sleeve, the inner wall of the sleeve is opened with an installation groove, the inner part of the installation groove is slidably inserted with an engaging block, the engaging block is adapted to the engaging groove, an unlocking block is fixed to the bottom of the engaging block, and an elastic member is fixed between the unlocking block and the inner wall of the sleeve.

[0013] Preferably, two first stirring rods are symmetrically fixed to the outer wall of the rotating column, and two second stirring rods are symmetrically fixed to the outer wall of the connecting rod.

[0014] Preferably, the high-temperature steam generating mechanism includes a steam generating device, which is fixed on the right side wall of the base, and the steam generating device is fixedly connected to the two steam pipes, and the top ends of the two steam pipes are fixedly connected to the interior of the gas storage tank.

[0015] A foaming method for a foam packaging material pre-foaming device, the foaming method comprising the following steps: Step 1: Place the pre-fermented material: The operator first places an appropriate amount of the pre-fermented material into the pre-fermenting cylinder through the feeding mechanism, and then the operator turns on the high-temperature steam generating mechanism, which will transport high-temperature steam into the pre-fermenting cylinder to expand the pre-fermented material; Step 2, turning the pre-fermented material: after the pre-fermented material has been in contact with the high-temperature steam for a period of time, the operator starts the motor, the motor drives the rotating rod to rotate, and the rotating rod drives the pre-fermented material conveying and turning mechanism to work, and the pre-fermented material that has fully reacted at the bottom of the pre-fermenting cylinder is first conveyed upward by the pre-fermented material conveying and turning mechanism, and the pre-fermented material that has been less in contact with the high-temperature steam at the top is simultaneously conveyed downward and moved to both sides; Step 3: Taking out the puffed pre-fattened material: After puffing for a period of time, the operator takes out the puffed pre-fattened material through the unloading mechanism on the outer wall of the pre-fattening cylinder and proceeds to the next step.

[0016] Compared with the prior art, the present invention has the following beneficial effects: 1. The present invention adopts the arrangement of a pre-fattened material conveying and turning mechanism to convey the fully reacted pre-fattened material at the bottom of the pre-fattened cylinder upward. In the process of conveying the pre-fattened material upward, the pre-fattened material at the bottom of the pre-fattened cylinder flows upward, which makes a certain space at the bottom of the pre-fattened cylinder available. As a result, the pre-fattened material above the pre-fattened cylinder that is less in contact with the high-temperature steam will flow to the space below the pre-fattened cylinder, which is beneficial for the pre-fattened material above the pre-fattened cylinder to fully absorb and react with the high-temperature steam, and is beneficial for the pre-fattened material at different positions inside the pre-fattened cylinder to fully contact with the high-temperature steam for expansion.

[0017] 2. The present invention diverts the high-temperature steam delivered to the inside of the pre-frothing cylinder by the high-temperature steam generating mechanism through the arrangement of two gas pipes, and then delivers the high-temperature steam to the pre-frothing material above through the gas outlet grooves provided on the two gas pipes, thereby increasing the amount of high-temperature steam above the pre-frothing cylinder, which is beneficial to accelerate the puffing of the pre-frothing material above the pre-frothing cylinder, and diverts the bottom high-temperature steam through the two gas pipes, which is beneficial to reduce the amount of high-temperature steam delivered to the bottom of the pre-frothing cylinder.

[0018] 3. The present invention provides a second stirring rod, and during the rotation of the two second stirring rods, fluidity is generated at the intersection of the downward conveying of the arc plate and the upward conveying of the spiral blade, so that the pre-fattened material above the pre-fattening cylinder and the pre-fattened material below can be fully mixed, which is conducive to the arc plate to push the mixed pre-fattened material outward, which is conducive to making the pre-fattened material puff more uniformly. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1It is a schematic diagram of the method flow of the present invention; Figure 2 It is a first overall structural schematic diagram of the present invention; Figure 3 It is a second overall structural schematic diagram of the present invention; Figure 4 It is a structural schematic diagram of the connection between the base and the steam generating device of the present invention; Figure 5 It is a structural schematic diagram of the connection between the pre-steaming cylinder and the motor of the present invention; Figure 6 It is a schematic structural diagram of the present invention after the section along the pre-seal barrel; Figure 7 For the present invention Figure 6 A schematic diagram of the enlarged structure at A in the middle; Figure 8 It is a structural schematic diagram of the connection between the rotating rod and the reciprocating screw of the present invention; Fig. 9 For the present invention Figure 8 A schematic diagram of the enlarged structure at B in the middle; Fig.10 For the present invention Fig. 9 Schematic diagram of the enlarged structure at C in the middle; Fig.11 For the present invention Figure 8 Schematic diagram of the enlarged structure at D in the middle; Fig.12 It is a structural schematic diagram of the connection between the rotating rod and the sleeve of the present invention; Fig.13 For the present invention Fig.12 Schematic diagram of the enlarged structure at E in the middle; Fig.14 It is a schematic diagram of the structure of the present invention along the cross section of the sleeve; Fig.15 For the present invention Fig.14 The enlarged structural diagram at F in the middle; Fig.16 It is a schematic diagram of the structure of the sliding sleeve and the connecting sleeve of the present invention; Fig.17 It is a schematic structural diagram of the connection between the flap and the arc-shaped shielding plate of the present invention.

[0020] In the figure: 1, base; 101, feed bin; 102, feed valve; 103, feed pipe; 2, pre-expanding cylinder; 201, discharge valve; 3, cover cap; 4, mounting seat; 5, motor; 6, rotating rod; 7, air pipe; 8, air outlet groove; 9, reciprocating screw; 10, rotating column; 11, connecting rod; 12, spiral blade; 13, threaded seat; 14, limit rod; 15, adjusting semicircular plate; 16, fixing groove; 17, flap; 18, one-way air inlet valve; 19, sliding block; 20, first spring; 2 1. arc plate; 22. arc shielding plate; 23. support rod; 24. slide groove; 25. slider; 26. sliding sleeve; 27. sleeve; 28. second spring; 29. ​​connecting sleeve; 30. sliding circular plate; 31. push rod; 32. engaging groove; 33. return rod; 34. through hole; 35. engaging block; 36. unlocking block; 37. elastic member; 38. first stirring rod; 39. second stirring rod; 40. steam generating device; 41. gas storage tank; 42. steam pipe; 43. bracket. DETAILED DESCRIPTION

[0021] The following description is used to disclose the present invention so that those skilled in the art can implement the present invention. The preferred embodiments described below are only examples, and those skilled in the art may think of other obvious variations.

[0022] like Figures 2 to 17 The foam packaging material pre-foaming device shown comprises a base 1, a pre-foaming cylinder 2 is fixed on the top of the base 1, and the bottom of the pre-foaming cylinder 2 is connected to an external high-temperature steam generating mechanism through a connecting mechanism; A cap 3 is fixedly mounted on the top of the pre-flanging cylinder 2, and a feeding mechanism is arranged on the top outer wall of the cap 3, and the feeding mechanism is used to convey an appropriate amount of pre-flanged material into the interior of the pre-flanging cylinder 2; A mounting seat 4 is fixed at the top center of the cap 3, a motor 5 is fixed at the top of the mounting seat 4, a rotating rod 6 is fixed after the output shaft end of the motor 5 passes through the cap 3, the rotating rod 6 is located inside the pre-fermenting cylinder 2, and a pre-fermenting material conveying and turning mechanism is arranged at the bottom of the rotating rod 6. After the pre-fermenting material absorbs and reacts with the high-temperature steam for a period of time, the pre-fermenting material conveying and turning mechanism is used to convey and turn the pre-fermenting material at the bottom from bottom to top; The outer wall of the pre-expanding cylinder 2 is fixedly connected with a discharge valve 201; in the production process of the factory, a pre-expanding machine is generally required to expand the pre-expanded material. Since the pre-expanded material is generally expanded by contacting the pre-expanded material with high-temperature steam generated by a high-temperature steam generator, and the high-temperature steam is generally transported upward from the bottom of the device, so in the process of the high-temperature steam device transporting the high-temperature steam from bottom to top, the pre-expanded material at the bottom will first contact with the high-temperature steam for expansion, and after expansion, the volume of the pre-expanded material becomes larger, which will compress the space at the bottom of the pre-expanding cylinder 2, thereby blocking the high-temperature steam flowing upward, and then the upper pre-expanded material will be heated unevenly, which is not conducive to sufficient pre-expanding. Puffing, this embodiment of the present invention can solve the above problems, the specific implementation is as follows, the feeding device includes, a feeding bin 101, a feeding valve 102 and a feeding pipe 103, the operator first puts an appropriate amount of pre-frozen material into the feeding bin 101, and then opens the feeding valve 102, the pre-frozen material enters the interior of the pre-frozen cylinder 2 through the feeding pipe 103, and is placed in the interior of the pre-frozen cylinder 2, then the operator turns on the high-temperature steam generating mechanism, the high-temperature steam generating mechanism will transport high-temperature steam to the interior of the pre-frozen cylinder 2 to puff the pre-frozen material, after the pre-frozen material is in contact with the high-temperature steam for a period of time, the operator starts the motor 5 again, so that the pre-frozen material can fully contact with the pre-frozen material at the bottom, which is beneficial to the pre-frozen material. The pre-frozen material is fully expanded, and the rotation of the motor 5 drives the rotating rod 6 to rotate, and the rotating rod 6 drives the pre-frozen material conveying and turning mechanism to work, and the pre-frozen material that has fully reacted at the bottom of the pre-frozen cylinder 2 is conveyed upward by the pre-frozen material conveying and turning mechanism. In the process of conveying the pre-frozen material upward, because the pre-frozen material at the bottom of the pre-frozen cylinder 2 flows upward, a certain space is left at the bottom of the pre-frozen cylinder 2, so that the pre-frozen material above the pre-frozen cylinder 2 that is less in contact with the high-temperature steam will flow to the space below the pre-frozen cylinder 2, which is beneficial for the pre-frozen material above the pre-frozen cylinder 2 to fully absorb and react with the high-temperature steam, and is beneficial for the pre-frozen material at different parts of the pre-frozen cylinder 2 to fully contact with the high-temperature steam for expansion. When the pre-fattened material conveying and flipping mechanism moves downward, it will also drive part of the pre-fattened material to flow downward, which is conducive to the pre-fattened material above the pre-fattened cylinder 2 to flow downward more quickly. After moving a certain distance, the pre-fattened material conveying and flipping mechanism will also push the pre-fattened material near the center to both sides, which is conducive to the pre-fattened material at the center of the pre-fattened cylinder 2 and the pre-fattened material at the inner edge to exchange positions, which is conducive to different parts of the pre-fattened material being able to fully absorb high-temperature steam for expansion reaction. After a period of expansion, the discharge valve 201 is opened, so that the material taking device can take out the expanded pre-fattened material through the discharge valve 201 for the next operation.

[0023] As an embodiment of the present invention, the connecting mechanism includes an air storage tank 41 and two air supply pipes 7, the two air supply pipes 7 are fixedly connected to the bottom surface inside the pre-expanding cylinder 2, and air outlet grooves 8 are provided on the opposite sides of the two air supply pipes 7. The air storage tank 41 is provided at the top of the base 1, and the bottom end of the air supply pipe 7 is connected to the air storage tank 41. The bottom end of the air storage tank 41 is connected to an external high-temperature steam generating mechanism through a steam pipe 42. A plurality of one-way air inlet valves 18 are fixedly connected to the bottom of the pre-expanding cylinder 2, and the bottoms of all the one-way air inlet valves 18 are connected to the air storage tank 41. During operation, because the amount of high-temperature steam transported from the bottom is large, the pre-expanded material at the bottom of the pre-expanding cylinder 2 will expand rapidly, while the pre-expanded material located above the pre-expanding cylinder 2 will be blocked by the expanded pre-expanded material at the bottom of the pre-expanding cylinder 2, so that the pre-expanded material above the pre-expanding cylinder 2 will not be exposed to enough high-temperature steam, which may cause the pre-expanded material at the bottom to expand excessively. The pre-frozen material is broken, and the amount of high-temperature steam that the pre-frozen material above the pre-frozen cylinder 2 contacts is small, resulting in incomplete expansion of the pre-frozen material. This embodiment of the present invention can solve the above problems. The specific implementation method is as follows. In the process of the high-temperature steam generating mechanism conveying high-temperature steam to the inside of the pre-frozen cylinder 2, the tops of the two gas pipes 7 are sealed. Through the arrangement of the two gas pipes 7, the high-temperature steam conveyed by the high-temperature steam generating mechanism to the inside of the pre-frozen cylinder 2 is diverted, and then the high-temperature steam is conveyed to the pre-frozen material above through the gas outlet grooves 8 provided on the two gas pipes 7, thereby increasing the amount of high-temperature steam above the pre-frozen cylinder 2, which is beneficial to accelerate the expansion of the pre-frozen material above the pre-frozen cylinder 2, and the bottom high-temperature steam is diverted through the two gas pipes 7, thereby helping to reduce the amount of high-temperature steam conveyed to the bottom of the pre-frozen cylinder 2, which is beneficial to avoid the pre-frozen material at the bottom of the pre-frozen cylinder 2 from being broken due to excessive high-temperature steam.

[0024] As an embodiment of the present invention, the pre-made material conveying and flipping mechanism includes a reciprocating screw 9, the top end of the reciprocating screw 9 is fixedly connected to the bottom end of the rotating rod 6, the bottom end of the reciprocating screw 9 is fixed with a rotating column 10, the bottom of the rotating column 10 is fixed with a connecting rod 11, the outer wall of the connecting rod 11 is fixedly connected with a spiral leaf 12, the outer wall of the reciprocating screw 9 is threadedly connected with a threaded seat 13, and the side walls of the threaded seat 13 and the two air outlet grooves 8 are both provided with a limited position adjustment mechanism, and the side walls of the threaded seat 13 are symmetrically provided with The turning and pressing mechanism is used to push the pre-made substance on the upper part of the pre-made cylinder 2 downward first and then turn it to both sides when the threaded seat 13 reciprocates. The limit adjustment mechanism is used to limit the threaded seat 13. When working, the rotating rod 6 rotates to drive the rotating column 10 to rotate, the rotating column 10 rotates to drive the connecting rod 11 to rotate, and the connecting rod 11 rotates to drive the spiral blade 12 to rotate, so that the spiral blade 12 is conducive to driving the pre-made substance at the bottom of the pre-made cylinder 2 to be transported upward, and the reciprocating screw 9 rotates to drive the threaded seat 13 to move downward first. The threaded seat 13 moves downward, driving the limit adjustment mechanism to move downward. The threaded seat 13 is limited by the limit adjustment mechanism to make it move vertically downward, and the limit adjustment mechanism will also adjust the gas outlet of the gas outlet groove 8. The downward movement of the threaded seat 13 will also drive the turning and pressing mechanism to move downward. In the process of the turning and pressing mechanism moving downward, the pre-made material above the pre-frozen tube 2 will first be driven to move downward, which is conducive to the rapid transportation of the pre-frozen material above to the space below. After the turning and pressing mechanism moves downward for a certain distance, the turning and pressing mechanism will push the pre-frozen material from the center range to the outside, so that the pre-frozen material at different positions can exchange positions, which is conducive to the pre-frozen material being able to fully absorb and react with the high-temperature steam. After the threaded seat 13 moves downward for a certain distance, it will start to move upward. The upward movement of the threaded seat 13 drives the turning and pressing mechanism to move upward, so that the pre-frozen material transported by the spiral blade 12 can be pushed upward during the upward movement of the turning and pressing mechanism, which is conducive to the mixing of the pre-frozen material above and below the pre-frozen tube 2.

[0025] As an embodiment of the present invention, the limit adjustment mechanism includes a limit rod 14, one end of the limit rod 14 is fixedly connected to one side wall of the threaded seat 13, the other end of the limit rod 14 passes through the air outlet groove 8 and is fixed with an adjustment semicircular plate 15, and the adjustment semicircular plate 15 is slidably connected to the inside of the air supply pipe 7; when working, the downward movement of the threaded seat 13 will drive the limit rod 14 to slide downward inside the air outlet groove 8, and the downward movement of the limit rod 14 will drive the adjustment semicircular plate 15 to move downward inside the air supply pipe 7, so that the threaded seat 13 can move downward through the limitation of the air outlet groove 8, and slide downward inside the air supply pipe 7 through the sliding semicircular plate, because the sliding semicircular plate The circular plate will limit the amount of high-temperature steam intake into the air pipe 7, thereby reducing the amount of high-temperature steam entering the top space between the sliding semicircular plate and the air pipe 7. Therefore, after the pre-frozen material below the pre-frozen cylinder 2 is transported to the space above the pre-frozen cylinder 2 through the spiral blades 12 and the flipping mechanism, the amount of high-temperature steam transported will be reduced, which is beneficial to avoid the situation where the pre-frozen material after expansion is contacted with too much high-temperature steam again and causes rupture. In addition, the amount of high-temperature steam inside the air pipe 7 is adjusted by the sliding semicircular plate, which is beneficial to make the amount of high-temperature steam contacted by the pre-frozen material above the pre-frozen cylinder 2 and the pre-frozen material below the pre-frozen cylinder 2 close to each other, which is beneficial to make the pre-frozen material in the pre-frozen cylinder 2 expand evenly.

[0026] As an embodiment of the present invention, the flipping mechanism includes a fixed groove 16, which is opened on one side wall of the threaded seat 13, and the fixed groove 16 is rotatably connected with a flap 17 inside, and the bottom of the flap 17 is slidably connected with a sliding block 19, and a first spring 20 is fixed between the sliding block 19 and the fixed groove 16, and an arc plate 21 is fixed to one end of the flap 17 away from the threaded seat 13, and an arc shielding plate 22 is fixed to one end of the arc plate 21 away from the threaded seat 13, and a slide groove 24 is opened at the bottom of the arc plate 21, and the inside of the slide groove 24 The sliding connection is provided with a slider 25, and the side of the slider 25 away from the arc plate 21 is rotatably connected with a support rod 23. The end of the support rod 23 away from the arc plate 21 is provided with a pushing mechanism. After the arc plate 21 moves downward for a certain distance, the pushing mechanism is used to drive the support rod 23 to move upward relative to the threaded seat 13. When working, the threaded seat 13 moves downward to drive the flap 17 to move downward, and the flap 17 moves downward to drive the arc plate 21 to move downward. The setting of the first spring 20 is conducive to limiting the position of the arc plate 21, which is conducive to avoiding the arc The curved plate 21 is folded upwards during the downward movement, and the downward movement of the curved plate 21 drives the curved shielding plate 22 to move downwards. The downward movement of the curved plate 21 also drives the support rod 23 to move downwards. The downward movement of the support rod 23 drives the pushing mechanism to move downwards, so that the curved plate 21 will push and press the pre-made material above the pre-made cylinder 2 downwards during the downward movement, thereby facilitating the speed of conveying the pre-made material to the bottom of the pre-made cylinder 2. After the pushing mechanism moves downwards and contacts the top end of the connecting rod 11, the pushing mechanism will push the support rod 23 downwards. The support rod 23 pushes the two arc plates 21 to push the pre-fattened material outward, which is conducive to conveying the pre-fattened material from the center range to the outside of the center range. In the process of the arc plate 21 moving upward, the arc-shaped shielding plate 22 is set, which is conducive to conveying the partially puffed pre-fattened material conveyed by the spiral blade 12 upward, and flows to both sides under the guidance of the arc surface of the arc plate 21, which is conducive to avoiding the accumulation of the pre-fattened material on the top of the arc plate 21, and is conducive to conveying the pre-fattened material conveyed upward by the spiral blade 12 upward again.

[0027] As an embodiment of the present invention, the pushing mechanism includes a sliding sleeve 26 and a sleeve 27. The sliding sleeve 26 is arranged on the outer wall of the reciprocating screw 9. The outer wall of the sliding sleeve 26 is fixedly connected to the end of the support rod 23 away from the arc plate 21. The bottom of the sliding sleeve 26 is fixed with a second spring 28 and a connecting sleeve 29. The second spring 28 is located inside the connecting sleeve 29. The bottom end of the second spring 28 is fixed with a sliding circular plate 30. The sleeve 27 is fixedly connected to the bottom of the threaded seat 13 through a bracket 43. The sliding circular plate 30 0 is slidably connected with the inner wall of the sleeve 27, the bottom end of the sliding circular plate 30 passes through the sleeve 27 and extends to the bottom of the sleeve 27, and a clamping mechanism is provided between the cover cap 3 and the inner wall of the sleeve 27. During the downward movement of the sliding circular plate 30, the clamping mechanism is used to limit the connection sleeve 29 and store force; when working, the support rod 23 moves downward to drive the sliding sleeve 26 to move downward, and the sliding sleeve 26 moves downward to drive the connection sleeve 29 and the second spring 28 to move downward, and the downward movement of the second spring 28 will drive the sliding circular plate 3 0 moves downward, the connecting sleeve 29 moves downward and drives the sleeve 27 to move downward through the engaging mechanism, the sliding circular plate 30 moves downward and drives the pushing rod 31 to move downward, after the bottom end of the pushing rod 31 contacts the top end of the rotating rod 6, the sliding sleeve 26 continues to move downward, at this time, the sliding sleeve 26 begins to compress the second spring 28 and generates relative displacement with the pushing rod 31, which is conducive to the accumulation of force of the second spring 28, after the pushing rod 31 contacts the engaging mechanism, the pushing rod 31 releases the limit of the engaging mechanism, so that the second spring 28 8 releases the spring force to quickly push the sliding sleeve 26 to slide upward, so that the sliding sleeve 26 pushes the support rod 23 to move upward, and the support rod 23 slides in the sliding groove 24 at the bottom of the arc plate 21 through the sliding rod, so that the two arc plates 21 are quickly pushed outward, which is conducive to better pushing the pre-fermented material from the inner center range of the pre-fermenting cylinder 2 to the outside of the center range, thereby reserving a certain space, which is conducive to the spiral blade 12 to mix and contact the pre-fermented material transported up from the bottom with the pre-fermented material pushed down from the top with the hot steam.

[0028] As an embodiment of the present invention, the locking mechanism includes a locking groove 32, a push rod 31, a return rod 33 and a through hole 34. The push rod 31 is fixedly connected to the top of the sliding circular plate 30, the top of the return rod 33 is fixed to the inner top surface of the cap 3, the through hole 34 is penetrated and opened at the top of the threaded seat 13, and the bottom end of the return rod 33 contacts the top of the sliding sleeve 26 after passing through the through hole 34. The locking groove 32 is opened on the outer wall of the connecting sleeve 29, and the inner wall of the sleeve 27 is opened with a mounting groove. The inner side of the mounting groove is slidably inserted with a locking block 35, and the locking block 35 is adapted to the locking groove 32. An unlocking block 36 is fixed to the bottom of the locking block 35, and an elastic member 37 is fixed between the unlocking block 36 and the inner wall of the sleeve 27. When working, when the push rod 31 moves upward and contacts the inclined surface of the unlocking block 36, When the locking cam 35 is in the unlocking state, the locking cam 35 is in the unlocking state, and the locking cam 35 is in the unlocking state.

[0029] As an embodiment of the present invention, two first stirring rods 38 are symmetrically fixed to the outer wall of the rotating column 10, and two second stirring rods 39 are symmetrically fixed to the outer wall of the connecting rod 11; when working, the rotating column 10 rotates to drive the two first stirring rods 38 to rotate, and the pre-fermented material at the bottom of the pre-fermenting cylinder 2 is driven to flow during the rotation of the two first stirring rods 38, so as to prevent the pre-fermented material from adhering to the bottom of the pre-fermenting cylinder 2 and prevent the formation of lumps; The synchronous rotation of the connecting rod 11 will also drive the two second stirring rods 39 to rotate. During the rotation of the two second stirring rods 39, fluidity is generated at the intersection of the downward conveyance of the arc plate 21 and the upward conveyance of the spiral blade 12, so that the pre-frothed material above the pre-froth cylinder 2 can be fully mixed with the pre-frothed material below, which is conducive to the arc plate 21 to push the mixed pre-frothed material outward, which is conducive to making the pre-froth puff more uniform.

[0030] As an embodiment of the present invention, the high-temperature steam generating mechanism includes a steam generating device 40, which is fixed on the right side wall of the base 1. The steam generating device 40 is fixedly connected to two steam pipes 42, and the top ends of the two steam pipes 42 are fixedly connected to the interior of the gas storage tank 41. When working, the steam generating device 40 generates high-temperature steam, which is transported to the interior of the gas storage tank 41 through the two steam pipes 42. The high-temperature steam cylinder in the gas storage tank 41 enters the interior of the pre-expansion cylinder 2 through the one-way air inlet valve 18, so that the high-temperature steam is in contact with the pre-expansion material inside the pre-expansion cylinder 2.

[0031] like Figure 1 A foaming method of a foam packaging material pre-foaming device is shown, and the foaming method comprises the following steps: Step 1: Placing the pre-fermented material: The operator first places an appropriate amount of the pre-fermented material into the interior of the pre-fermenting cylinder 2 through the feeding mechanism, and then the operator turns on the high-temperature steam generating mechanism, which will transport high-temperature steam into the interior of the pre-fermenting cylinder 2 to expand the pre-fermented material; Step 2, turning the pre-fermented material: after the pre-fermented material has been in contact with the high-temperature steam for a period of time, the operator starts the motor 5, the motor 5 drives the rotating rod 6 to rotate, and the rotating rod 6 drives the pre-fermented material conveying and turning mechanism to work, and the pre-fermented material that has fully reacted at the bottom of the pre-fermenting cylinder 2 is first conveyed upward by the pre-fermented material conveying and turning mechanism, and the pre-fermented material that has been less in contact with the high-temperature steam at the top is simultaneously conveyed downward and moved to both sides; Step 3, taking out the puffed pre-fattened material: After puffing for a period of time, the operator takes out the puffed pre-fattened material through the unloading mechanism on the outer wall of the pre-fattening cylinder 2 and proceeds to the next step.

[0032] Working principle of the present invention: the feeding device comprises a feeding bin 101, a feeding valve 102 and a feeding pipe 103. The operator first puts an appropriate amount of pre-frozen material into the feeding bin 101, and then opens the feeding valve 102. The pre-frozen material enters the interior of the pre-frozen cylinder 2 through the feeding pipe 103 and is placed in the interior of the pre-frozen cylinder 2. Then the operator turns on the high-temperature steam generating mechanism, and the high-temperature steam generating mechanism will transport high-temperature steam to the interior of the pre-frozen cylinder 2 to expand the pre-frozen material. After the pre-frozen material is in contact with the high-temperature steam for a period of time, the operator starts the motor 5 again, so that the pre-frozen material can fully contact with the pre-frozen material at the bottom, which is conducive to the complete expansion of the pre-frozen material. The rotation of the motor 5 will drive the rotating rod 6 to rotate, and the rotating rod 6 will drive the pre-frozen material conveying and turning mechanism to work. The pre-frozen material that has fully reacted at the bottom of the pre-frozen cylinder 2 is transported upward through the pre-frozen material conveying and turning mechanism. In the process of the pre-frozen material being transported upward, the pre-frozen material at the bottom of the pre-frozen cylinder 2 will make a certain space at the bottom of the pre-frozen cylinder 2 because the pre-frozen material at the bottom of the pre-frozen cylinder 2 flows upward, thereby The pre-fattened material which has less contact with the high-temperature steam above the pre-fattened cylinder 2 will flow to the space below the pre-fattened cylinder 2, which is beneficial for the pre-fattened material above the pre-fattened cylinder 2 to fully absorb and react with the high-temperature steam, and is beneficial for the pre-fattened material at different parts inside the pre-fattened cylinder 2 to fully contact and expand with the high-temperature steam. In the process of the pre-fattened material conveying and turning mechanism moving downward, part of the pre-fattened material will be driven to flow downward, which is beneficial for the pre-fattened material above the pre-fattened cylinder 2 to flow downward more quickly. After moving a certain distance, the pre-fattened material conveying and turning mechanism will also push the pre-fattened material close to the center part to both sides, which is beneficial for the pre-fattened material at the center of the pre-fattened cylinder 2 to exchange positions with the pre-fattened material at the inner edge, which is beneficial for the pre-fattened material at different parts to fully absorb the high-temperature steam for expansion reaction. After expanding for a period of time, the discharge valve 201 is opened, so that the material taking device can take out the expanded pre-fattened material through the discharge valve 201 for the next operation.

[0033] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments, and the above embodiments and descriptions only describe the principles of the present invention. The present invention may be subject to various changes and improvements without departing from the spirit and scope of the present invention, and these changes and improvements fall within the scope of the present invention claimed.

Claims

1. A foam packaging material pre-foaming device, comprising a base (1), characterized in that: A pre-steaming cylinder (2) is fixed on the top of the base (1), and the bottom of the pre-steaming cylinder (2) is connected to an external high-temperature steam generating mechanism via a connecting mechanism; A cover cap (3) is fixedly mounted on the top of the pre-frothing cylinder (2), and a feeding mechanism is arranged on the top outer wall of the cover cap (3), and the feeding mechanism is used to convey an appropriate amount of pre-frothing material into the interior of the pre-frothing cylinder (2); A mounting seat (4) is fixed at the center of the top of the cap (3), a motor (5) is fixed at the top of the mounting seat (4), an output shaft end of the motor (5) passes through the cap (3) and a rotating rod (6) is fixed thereto, the rotating rod (6) is located inside the pre-fermentation cylinder (2), and a pre-fermentation material conveying and turning mechanism is provided at the bottom of the rotating rod (6), and after the pre-fermentation material and the high-temperature steam have absorbed and reacted for a period of time, the pre-fermentation material conveying and turning mechanism is used to convey the pre-fermentation material at the bottom from bottom to top and turn it over; The outer wall of the pre-expanding cylinder (2) is fixedly connected to a discharge valve (201).

2. A foam packaging material pre-foaming device according to claim 1, characterized in that: The communication mechanism comprises an air storage tank (41) and two air delivery pipes (7), the two air delivery pipes (7) being fixedly connected to the bottom surface of the pre-expanding cylinder (2), and air outlet grooves (8) being provided on opposite sides of the two air delivery pipes (7), the air storage tank (41) being provided on the top of the base (1), the bottom end of the air delivery pipe (7) being connected to the air storage tank (41), the bottom end of the air storage tank (41) being connected to an external high-temperature steam generating mechanism via a steam pipe (42), and a plurality of one-way air inlet valves (18) being fixedly connected to the bottom of the pre-expanding cylinder (2), and the bottoms of all the one-way air inlet valves (18) being connected to the air storage tank (41).

3. A foam packaging material pre-foaming device according to claim 2, characterized in that: The pre-made material conveying and flipping mechanism comprises a reciprocating screw (9), the top end of the reciprocating screw (9) is fixedly connected to the bottom end of the rotating rod (6), a rotating column (10) is fixed to the bottom end of the reciprocating screw (9), a connecting rod (11) is fixed to the bottom of the rotating column (10), the outer wall of the connecting rod (11) is fixedly connected to a spiral leaf (12), the outer wall of the reciprocating screw (9) is threadedly connected to a threaded seat (13), and limit adjustment mechanisms are arranged between the side walls of the threaded seat (13) and the two air outlet grooves (8), and flipping mechanisms are symmetrically arranged on the side walls of the threaded seat (13), and when the threaded seat (13) reciprocates, the flipping mechanism is used to push the pre-made material on the upper part of the pre-made cylinder (2) downward first and then flip it to both sides, and the limit adjustment mechanism is used to limit the threaded seat (13).

4. A foam packaging material pre-foaming device according to claim 3, characterized in that: The limit adjustment mechanism comprises a limit rod (14), one end of which is fixedly connected to a side wall of the threaded seat (13), and the other end of which passes through the air outlet groove (8) and is fixed with an adjustment semicircular plate (15), wherein the adjustment semicircular plate (15) is slidably connected to the inside of the air delivery pipe (7).

5. A foam packaging material pre-foaming device according to claim 4, characterized in that: The flipping mechanism comprises a fixed groove (16), the fixed groove (16) being formed on a side wall of the threaded seat (13), a flap (17) being rotatably connected inside the fixed groove (16), a sliding block (19) being slidably connected at the bottom of the flap (17), a first spring (20) being fixed between the sliding block (19) and the fixed groove (16), an arc plate (21) being fixed at one end of the flap (17) away from the threaded seat (13), and a curved plate (21) being fixed at one end of the curved plate (21) away from the threaded seat (13). An arc-shaped shielding plate (22) is fixed at one end, a sliding groove (24) is provided at the bottom of the arc-shaped plate (21), a sliding block (25) is slidably connected inside the sliding groove (24), a side of the sliding block (25) away from the arc-shaped plate (21) is rotatably connected to a support rod (23), and an end of the support rod (23) away from the arc-shaped plate (21) is provided with a pushing mechanism, and after the arc-shaped plate (21) moves downward a certain distance, the pushing mechanism is used to drive the support rod (23) to move upward relative to the threaded seat (13).

6. A foam packaging material pre-foaming device according to claim 5, characterized in that: The pushing mechanism comprises a sliding sleeve (26) and a sleeve (27); the sliding sleeve (26) is arranged on the outer wall of the reciprocating screw (9); the outer wall of the sliding sleeve (26) is fixedly connected to an end of the support rod (23) away from the arc-shaped plate (21); a second spring (28) and a connecting sleeve (29) are fixed to the bottom of the sliding sleeve (26); the second spring (28) is located inside the connecting sleeve (29); and a sliding circular plate (30) is fixed to the bottom end of the second spring (28). The sleeve (27) is fixedly connected to the bottom of the threaded seat (13) via a bracket (43); the outer ring of the sliding circular plate (30) is slidably connected to the inner wall of the sleeve (27); the bottom end of the sliding circular plate (30) passes through the sleeve (27) and extends to the bottom of the sleeve (27); a locking mechanism is provided between the cover cap (3) and the inner wall of the sleeve (27); and the locking mechanism is used to limit the connection sleeve (29) and store force during the downward movement of the sliding circular plate (30).

7. A foam packaging material pre-foaming device according to claim 6, characterized in that: The engaging mechanism comprises an engaging groove (32), a pushing rod (31), a return rod (33) and a through hole (34); the pushing rod (31) is fixedly connected to the top of the sliding circular plate (30); the top end of the return rod (33) is fixed to the inner top surface of the cover cap (3); the through hole (34) is opened through the top of the threaded seat (13); the bottom end of the return rod (33) passes through the through hole (34) and contacts the top of the sliding sleeve (26); the engaging groove (32) is opened on the outer wall of the connecting sleeve (29); the inner wall of the sleeve (27) is opened with a mounting groove; a engaging block (35) is slidably inserted in the interior of the mounting groove; the engaging block (35) is adapted to the engaging groove (32); an unlocking block (36) is fixed to the bottom of the engaging block (35); an elastic member (37) is fixed between the unlocking block (36) and the inner wall of the sleeve (27).

8. A foam packaging material pre-foaming device according to claim 4, characterized in that: Two first stirring rods (38) are symmetrically fixedly connected to the outer wall of the rotating column (10), and two second stirring rods (39) are symmetrically fixedly connected to the outer wall of the connecting rod (11).

9. A foam packaging material pre-foaming device according to claim 2, characterized in that: The high-temperature steam generating mechanism comprises a steam generating device (40), the steam generating device (40) being fixed on the right side wall of the base (1), the steam generating device (40) being fixedly connected to the two steam pipes (42), and the top ends of the two steam pipes (42) being fixedly connected to the interior of the gas storage tank (41).

10. A foaming method for a foam packaging material pre-foaming device, applicable to a foam packaging material pre-foaming device according to any one of claims 1 to 9, characterized in that: The foaming method comprises the following steps: Step 1: placing the pre-fermented material: the operator first places an appropriate amount of the pre-fermented material into the interior of the pre-fermenting cylinder (2) through the feeding mechanism, and then the operator turns on the high-temperature steam generating mechanism, which delivers high-temperature steam to the interior of the pre-fermenting cylinder (2) to expand the pre-fermented material; Step 2, turning the pre-fermented material: after the pre-fermented material has been in contact with the high-temperature steam for a period of time, the operator starts the motor (5), the motor (5) drives the rotating rod (6) to rotate, and the rotating rod (6) drives the pre-fermented material conveying and turning mechanism to work, and the pre-fermented material that has been fully reacted at the bottom of the pre-fermenting cylinder (2) is first conveyed upward by the pre-fermented material conveying and turning mechanism, and the pre-fermented material that has been less in contact with the high-temperature steam at the top is simultaneously conveyed downward by the pre-fermented material conveying and turning mechanism and is turned to both sides; Step 3: Taking out the expanded pre-fattened material: After a period of expansion, the operator takes out the expanded pre-fattened material through the unloading mechanism on the outer wall of the pre-fattening cylinder (2) and proceeds to the next step.

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