Foam molding equipment

Abstract

The invention discloses a foam forming device, which relates to the technical field of foam forming, and comprises a forming mold and a demoulding mechanism. The demoulding mechanism pushes out the formed foam box in the forming mold. The device also comprises a collecting and transferring device, which comprises a two-way fan, a collecting frame and a lifting mechanism. The lifting mechanism is used to drive the collecting frame to move up and down. The collecting frame corresponds to the foam box formed by the forming mold at one time. The two-way fan is connected to the collecting frame to extract the air in the collecting frame. The lifting mechanism drives the collecting frame to move upward so that each collecting frame is aligned with the corresponding foam box. The opening of the foam box faces the collecting frame. The demoulding mechanism pushes the foam box into the collecting frame. The two-way fan draws air outward so that the foam box is adsorbed in the collecting frame to prevent it from accidentally falling. The lifting mechanism drives the collecting frame to move downward to a preset position to unload the foam box, thereby solving the problem that the foam box falls directly from the forming mold and the suction cup leaves traces, reduces the product defective rate, and improves the product qualified rate.

Description

Technical Field

[0001] The invention relates to the technical field of foam molding, in particular to a foam molding device. Background Art

[0002] Foam molding equipment refers to mechanical equipment used to produce various foam products. This type of equipment is widely used in packaging, construction, furniture, automobile and other industries. Foam molding technology mainly includes several steps such as foaming, molding and curing. The raw materials are mixed and foamed, then injected into a pre-designed mold for curing and molding, and then the molded foam product is demolded to finally obtain the foam product of the desired shape. In the demolding step of producing foam boxes, the existing foam molding equipment usually directly pushes the foam box out of the mold and allows the foam box to fall freely to the collection device at the bottom, or uses multiple pneumatic suction cups to absorb and take the material, and finally collects and stacks it manually. However, when the free fall method is adopted, although the foam box is light, it may flip during the falling process and is prone to rupture when landing at certain angles; when the pneumatic suction cup is used to absorb and take the material, the foam box is at a high temperature after demolding and has not yet been completely cooled and fixed, so it is easy to deform, and the adsorption of the pneumatic suction cup is easy to leave obvious marks. The above two situations will lead to an increase in the defective rate of the product. Summary of the invention

[0003] In view of this, the present invention provides a foam molding device, which can collect and transport the foam boxes after demoulding and reduce the defective rate of the foam boxes.

[0004] To achieve the above objectives, the present invention provides the following technical solutions.

[0005] The foam molding equipment is used to manufacture foam boxes with openings, including a molding mold and a demoulding mechanism. After the molding mold is opened, the demoulding mechanism pushes out the foam box formed in the molding mold. The equipment also includes a collecting and transferring device. The collecting and transferring device includes a two-way fan, a collecting frame and a lifting mechanism. The lifting mechanism is used to drive the collecting frame to move up and down. The collecting frame corresponds to the foam boxes formed by the molding mold at one time. An opening is provided on the side of the collecting frame for the foam boxes to enter. After the molding mold is opened, the lifting mechanism drives the collecting frame to move upward so that each collecting frame is aligned with the corresponding foam box, and the opening of the foam box faces the collecting frame. The demoulding mechanism pushes the foam box into the collecting frame, and the two-way fan draws air outward so that the foam box is adsorbed in the collecting frame to prevent it from accidentally falling. The lifting mechanism drives the collecting frame to move downward to a preset position to unload the foam box.

[0006] A collection and transfer device is set up to transfer the foam box from the forming mold to prevent the foam box from falling freely and causing rupture. The opening of the foam box faces the collection frame and is pushed into the collection frame, forming a relatively closed space between the two. At this time, the two-way fan is used to draw air outwards so that the foam box can be adsorbed in the collection frame to prevent it from falling from the collection frame during the transfer process. The two-way fan is used to draw air outwards, and there is no need to directly contact the foam box through parts such as suction cups, so there will be no suction marks. This solves the problem of the foam box falling directly from the forming mold and the suction cup leaving marks, reduces the product defective rate, and improves the product qualification rate.

[0007] Furthermore, the foam molding equipment also includes a conveying and stacking device, which includes a stacking pipe, a guiding mechanism and a conveyor belt. The stacking pipe is provided with an inlet and an outlet. The stacking pipe is the same in number and one-to-one corresponding to the foam boxes formed at one time. The guiding mechanism is arranged at the outlet of the stacking pipe to guide the stacking of the foam boxes, and can be moved to release the stacked foam boxes. The conveyor belt is used to convey the foam boxes stacked thereon. After the collection frame moves down to a preset position, the foam boxes in each collection frame are respectively aligned with the inlet of each corresponding stacking pipe, and the two-way fan blows each foam box into the corresponding stacking pipe and pushes it to the outlet of the stacking pipe. The guiding mechanism blocks and limits the foam boxes pushed out from the outlet of each stacking pipe, so that each foam box falls to the preset position of the conveyor belt and is stacked and stacked. After the stacking and stacking is completed, the guiding mechanism moves to release the foam box.

[0008] Furthermore, the stacking pipe is provided with a flip section, which includes a flip step and a flip guide arc surface. When the foam box is pushed to move in the stacking pipe, it is blocked by the flip step and flipped along the flip guide arc surface, so that the foam box is flipped to have the opening facing upward.

[0009] Furthermore, the stacking pipe is divided into multiple columns and arranged, and multiple stacking pipes in each column are stacked up and down. The stacking pipe is also provided with a blocking mechanism for blocking the foam boxes, and the blocking mechanism includes a blocking member, which extends to block the foam boxes from moving toward the outlet of the stacking pipe. After the foam boxes passing through the stacking pipe of the lower layer are stacked, the blocking member of the stacking pipe of the upper layer is retracted to allow the foam boxes to move toward the outlet of the stacking pipe, so as to ensure that the foam boxes passing through the stacking pipes of each layer are stacked in sequence from low to high.

[0010] Furthermore, the blocking mechanism also includes:

[0011] The blocking cylinder comprises a blocking piston rod and a blocking cylinder body, wherein the blocking piston rod is slidably connected to the blocking cylinder body, and the blocking piston rod is fixedly connected to the blocking member;

[0012] The trigger cylinder comprises a trigger piston rod, a trigger cylinder body and a trigger spring. The trigger piston rod is slidably connected to the trigger cylinder body so as to be able to pump and exhaust air. The trigger cylinder body is connected to a blocking cylinder body of an upper stacking pipeline so that the trigger piston rod can pump air into or extract air from the blocking cylinder body. The trigger spring is respectively connected to the trigger piston rod and the trigger cylinder body to provide an elastic force to push the trigger piston rod to extend.

[0013] A trigger assembly is arranged on the guide mechanism, and includes a trigger pressure plate, a reset spring and a locking rod. The trigger pressure plate is arranged on the guide mechanism so that the foam box can contact and push the trigger pressure plate after being pushed out of the stacking pipe. The reset spring is connected to the trigger pressure plate to provide elastic force for the trigger pressure plate to reset and push out. One end of the locking rod is fixedly connected to the trigger pressure plate to move with the trigger pressure plate, and the other end penetrates one side of the trigger cylinder to extend into the trigger cylinder to lock the trigger piston rod.

[0014] When the foam box located in the stacking pipe of the next layer is pushed out of the stacking pipe, the foam box contacts and pushes the trigger pressure plate, which drives the positioning rod to disengage from the contact with the trigger piston rod. The trigger piston rod is extended under the push of the trigger spring to pump air into the blocking cylinder of the stacking pipe of the previous layer, and its blocking piston rod is pushed back by the airflow to cause the corresponding blocking member to be driven back, thereby releasing the foam box in the stacking pipe of the previous layer. After stacking is completed, the release guide mechanism moves to press the trigger piston rod back, which extracts the air in the blocking cylinder of the stacking pipe of the previous layer, and its blocking piston rod drives the corresponding blocking member to extend.

[0015] Furthermore, the stacking pipeline is provided with an air vent, and a flip cover is provided at the air vent. When the foam box is blocked by the blocking member, the airflow generated by the two-way fan can push the cover open to discharge from the air vent.

[0016] Furthermore, the lifting mechanism includes a lifting cylinder, a connecting plate and a slide groove. The connecting plate is fixedly connected to the lifting cylinder, and the connecting plate is slidably connected in the slide groove. The collection frames are fixedly connected to the connecting plate. The lifting cylinder drives the connecting plate to move up and down in the slide groove to drive the collection frame to move up and down.

[0017] Furthermore, the guiding mechanism includes a baffle and a driving cylinder. With the direction in which the foam box is blown as the front, the baffle is located in front of the outlet of the stacking pipe to block the foam box passing through the outlet. The baffle can slide left and right and is connected to the driving cylinder. Two guide plates are respectively provided on the left and right sides of the outlet of the stacking pipe. After the foam box is pushed out of the stacking pipe, its front side contacts the baffle, and its left and right sides contact the two guide plates respectively, so that the foam box falls along the surface of the baffle and the guide plate to the preset position of the conveyor belt. After the foam box is stacked, the driving cylinder drives the baffle to slide to release the foam box. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1It is a schematic diagram of the three-dimensional structure of the foam molding equipment of the present invention.

[0019] Figure 2 It is a schematic diagram of the three-dimensional structure of the collection and transfer device.

[0020] Figure 3 A cross-sectional view of the collecting and transferring device when it is moved down to align and stack the pipes.

[0021] Figure 4 A cross-sectional view of the blocking cylinder along the cross-sectional direction of the stacked pipe.

[0022] Figure 5 It is a schematic diagram of the connection between the trigger cylinder and the blocking cylinder of the stacking pipe on the upper layer.

[0023] Figure 6 This is a schematic diagram of the three-dimensional structure of the trigger component (partial sectioning has been done to facilitate the display of the internal structure).

[0024] Figure 7 Exploded view of the bezel and a trigger assembly.

[0025] Figure 8 for Figure 7 A magnified illustration of the trigger assembly exploding.

[0026] Reference numerals include:

[0027] Collection and transfer device 1, fan interface 11, collection frame 12, lifting cylinder 13, connecting plate 14, chute 15;

[0028] Conveying and stacking device 2, stacking pipe 21, inlet 211, outlet 212, air release port 213, flip cover 2131, turning step 214, turning guide arc surface 215, conveyor belt 22;

[0029] Blocking cylinder 3, blocking piston rod 31, blocking cylinder body 32, blocking member 33;

[0030] Trigger cylinder 4, trigger piston rod 41, trigger cylinder body 42, trigger pressure plate 43, U-shaped rod 431, return spring 44, locking rod 45, trigger spring 46, locking hole 47;

[0031] Driving cylinder 5, baffle 51, guide plate 52, cylinder support 53;

[0032] Forming mold 6, foam box 7. DETAILED DESCRIPTION

[0033] The present invention is described in detail below in conjunction with specific embodiments.

[0034] like Figure 1As shown, the foam molding device of this embodiment is used to manufacture a foam box with an opening, including a molding mold 6, a demoulding mechanism and a collecting and transferring device 1. After the molding mold 6 is opened, the demoulding mechanism pushes out the foam box formed in the molding mold 6. Figure 1-Figure 3 The collecting and transferring device 1 includes a two-way fan (not shown in the figure), a collecting frame 12 and a lifting mechanism. The lifting mechanism includes a lifting cylinder 13, a connecting plate 14 and a slide groove 15. The connecting plate 14 is fixedly connected to the lifting cylinder 13, and the connecting plate 14 is slidably connected in the slide groove 15. The collecting frame 12 is fixedly connected to the connecting plate 14. The lifting cylinder 13 drives the connecting plate 14 to move up and down in the slide groove 15 to drive the collecting frame 12 to move up and down. The collecting frame 12 corresponds one-to-one to the foam box formed by the forming mold 6 at one time. An opening is provided on the side of the collecting frame 12 for the foam box to enter. The two-way fan is connected to the collecting frame 12 through the fan interface 11 to extract the air in the collecting frame 12. After the forming mold 6 is opened, the lifting mechanism drives the collecting frame 12 to move upward so that each collecting frame 12 is aligned with the corresponding foam box, and the opening of the foam box faces the collecting frame 12. The demolding mechanism pushes the foam box into the collecting frame 12, and the two-way fan draws air outward to make the foam box adsorbed in the collecting frame 12 to prevent it from accidentally falling. The lifting mechanism drives the collecting frame 12 to move down to a preset position to unload the foam box.

[0035] By setting up the collection and transfer device 1 to transfer the foam box from the forming mold 6, the foam box is prevented from falling freely and causing rupture. The opening of the foam box faces the collection frame 12 and is pushed into the collection frame 12, forming a relatively closed space between the two. At this time, the foam box can be adsorbed in the collection frame 12 by using a two-way fan to evacuate air outwards, so that it can be prevented from falling from the collection frame 12 during the transportation process. In addition, the two-way fan is used to evacuate air outwards, and there is no need to directly contact the foam box through parts such as suction cups, so no suction marks will be left. In this way, the problem of the foam box falling directly from the forming mold 6 and the suction marks left by the suction cups is solved, the defective rate of products is reduced, and the qualified rate of products is improved.

[0036] Combination Figure 2-Figure 3The conveying and stacking device 2 of this embodiment includes a stacking pipe 21, a guiding mechanism and a conveyor belt 22. The stacking pipe 21 is provided with an inlet 211 and an outlet 212. The stacking pipe 21 is the same as the number of foam boxes formed at one time and corresponds to each other. The guiding mechanism is arranged at the outlet 212 of the stacking pipe 21 to guide the stacking of the foam boxes and can be moved to release the stacked foam boxes. The guiding mechanism includes a baffle 51 and a driving cylinder 5. With the direction in which the foam boxes 7 are blown as the front, the baffle 51 is located in front of the outlet 212 of the stacking pipe 21. The baffle 51 can slide left and right and is connected to the driving cylinder 5 to block the foam box passing through the outlet 212. Two guide plates 52 are respectively provided on the left and right sides of the outlet 212 of the stacking pipe 21. After the foam box 7 is pushed out of the stacking pipe 21, its front side contacts the baffle 51, and its left and right sides contact the two guide plates 52 respectively, so that the foam box 7 can fall along the surface of the baffle 51 and the guide plate 52 to the preset position of the conveyor belt 22. After the foam box 7 is stacked, the driving cylinder 5 drives the baffle 51 to slide to release the foam box 7. The baffle 51 is set to block the foam box 7 after passing through the stacking pipe 21, and then the baffle 51 and the guide plates 52 on the left and right sides cooperate to prevent the foam box 7 from deflecting or turning when it falls, so that it is stacked along the surface of the baffle 51 and the guide plate 52 with the opening facing upward. After each foam box 7 is stacked, the baffle 51 is driven by the driving cylinder 5 to slide away from the stacked foam box 7, and the conveyor belt 22 can transport the foam box away.

[0037] like Figure 3 As shown, the conveyor belt 22 is located below the guiding mechanism, and the foam box falls onto the transmission belt along the guiding mechanism. The conveyor belt 22 of this embodiment is aligned and placed parallel to the conveying pipe. This is arrangement method 1. The conveyor belt 22 can also be arranged in other ways. For example, on the basis of the conveyor belt 22 of this embodiment, the conveyor belt 22 is rotated 90° to make the conveying direction of the conveyor belt 22 perpendicular to the conveying direction of the stacking pipe 21. This is arrangement method 2. When the conveyor belt 22 is in arrangement method 2, the baffle 51 does not need to be moved. After the stacking is completed, the guide plates 52 located on both sides of the stacking pipe 21 need to be removed, and the conveyor belt 22 can transport the stacked foam boxes away.

[0038] After the lifting cylinder 13 drives the collection frame 12 to move down to the preset position, the foam boxes in each collection frame 12 are respectively aligned with the inlet 211 of each corresponding stacking pipe 21, and the two-way fan blows each foam box into the corresponding stacking pipe 21 and pushes it to the outlet 212 of the stacking pipe 21. The baffle 51 blocks the foam box pushed out of the outlet 212 of each stacking pipe 21, so that each foam box falls to the preset position of the conveyor belt 22 and is stacked and stacked. After the stacking and stacking are completed, the baffle 51 is driven by the cylinder 5 to release the foam box. The stacking pipe 21 corresponds to the foam box formed at one time, so that each foam box can be unloaded into the stacking pipe 21 for stacking at the same time, and the foam box formed at one time automatically completes the stacking and stacking during the unloading process, without manual stacking, reducing labor costs and improving production efficiency.

[0039] After the foam box 7 is unloaded from the forming mold 6, its opening faces the collecting frame 12. In this state, the foam box 7 is not convenient for direct stacking. Figure 3 As shown, the stacking pipe 21 of this embodiment is provided with a flip section, which includes a flip step 214 and a flip guide arc surface 215. The foam box 7 is blocked by the flip step 214 during the movement in the stacking pipe 21 and flips along the flip guide arc surface 215, so that the foam box 7 flips to the opening facing upward. By providing the flip section, the foam box 7 is flipped to the opening facing upward, and the foam box 7 is stacked with the opening facing upward. In this way, the four side walls of the foam box 7 play a major supporting role during stacking, and the force is more uniform, not easy to break, and more layers can be stacked. In addition, the foam box 7 completes the flipping step during the movement of the stacking pipe 21, which saves production processes and improves production efficiency.

[0040] The time for each foam box to pass through the stacking pipe 21 may be different, which may cause the foam boxes at the upper layer to fall into place faster than the foam boxes at the lower layer, resulting in the foam boxes at the lower layer being blocked by the foam boxes at the upper layer and unable to be blown out of the stacking pipe 21, thereby failing to complete the subsequent stacking. Therefore, it is necessary to ensure that each foam box is stacked from low to high, such as Figure 2 As shown, the stacking pipes 21 of this embodiment are arranged in two columns, and the multiple stacking pipes 21 in each column are stacked up and down, which is consistent with the arrangement of the foam boxes in the forming mold 6. The stacking pipes 21 are also provided with a blocking mechanism for blocking the foam boxes. Figure 3-Figure 6The blocking mechanism includes a blocking member 33, a blocking cylinder 3, a trigger cylinder 4 and a trigger assembly. The blocking member 33 can extend into the stacking pipe 21 to block the foam boxes. After the foam boxes passing through the stacking pipe 21 of the next layer are stacked, the blocking member 33 of the stacking pipe 21 of the previous layer is retracted to allow the foam boxes to move toward the outlet 212 of the stacking pipe 21, so as to ensure that the foam boxes passing through the stacking pipes 21 of each layer are stacked from low to high. The blocking cylinder 3 includes a blocking piston rod 31 and a blocking cylinder body 32. The blocking piston rod 31 is slidably connected to the blocking cylinder body 32, and the blocking piston rod 31 is fixedly connected to the blocking member 33. The trigger cylinder 4 includes a trigger piston rod 41, a trigger cylinder body 42 and a trigger spring 46. The trigger piston rod 41 is slidably connected to the trigger cylinder body 42 to pump and exhaust air. The trigger cylinder body 42 is connected to the blocking cylinder body 32 of the upper stacking pipeline 21, so that the trigger piston rod 41 can pump air into or out of the blocking cylinder body 32. The trigger spring 46 is respectively connected to the trigger piston rod 41 and the trigger cylinder body 42 to provide elastic force to push the trigger piston rod 41 to extend. Figure 6-8 The baffle plate 51 is T-shaped, and the trigger assembly is arranged at the T-shaped junction of the baffle plate 51. The trigger assembly includes a trigger pressure plate 43, a return spring 44 and a locking rod 45. The trigger pressure plate 43 of this embodiment is provided with a U-shaped rod 431, and a corresponding slide groove (not shown in the figure) is provided on the baffle plate 51. The trigger pressure plate 43 is slidably connected with the slide groove through the U-shaped rod 431 so as to be extended and retracted from the baffle plate 51, so that the foam box can contact and push the trigger pressure plate 43 to retract into the baffle plate 51 after being pushed out of the stacking pipe 21. The return spring 44 is respectively connected to the trigger pressure plate 43 and the baffle plate 51 to provide the trigger pressure plate 43 with an elastic force to reset and extend out of the baffle plate 51. A locking hole 47 is provided on one side of the trigger cylinder body 42. One end of the locking rod 45 is fixed to the inner side of the U-shaped rod 431 of the trigger pressure plate 43 to move with the trigger pressure plate 43. Figure 6 The other end passes through the locking hole 47 to extend into the trigger cylinder 42 to lock the trigger piston rod 41 to lock the trigger piston rod 41. When the foam box located in the stacking pipe 21 of the next layer is pushed out of the stacking pipe 21, the foam box contacts and pushes the trigger pressing plate 43, and the trigger pressing plate 43 retracts along the slide groove into the baffle 51 (i.e. Figure 6The trigger piston rod 41 is pushed by the trigger spring 46 to extend the trigger piston rod 41 to pump air into the blocking cylinder 32 of the upper stacking pipe 21. The blocking piston rod 31 is pushed back by the airflow, so that the corresponding blocking member 33 is driven back, thereby releasing the foam box of the upper stacking pipe 21. After the foam boxes are stacked, when the conveyor belt 22 is in arrangement mode 1, the driving cylinder 5 drives the baffle 51 to release the stacked foam boxes, and the baffle 51 drives the trigger piston rod 41 to contact the cylinder bracket 53, and the trigger piston rod 41 is pressed back, so that the trigger cylinder 4 draws out the air in the blocking cylinder body 32 of the upper stacking pipe 21, and its blocking piston rod 31 drives the corresponding blocking member 33 to reset and extend. When the conveyor belt 22 is in arrangement mode 2, the baffle 51 does not need to be moved to release, and a linkage mechanism can be set between the conveyor belt 22 and the trigger piston rod 41 to drive the trigger piston rod 41 to retract, or a driving source can be directly set to press the trigger piston rod 41 back.

[0041] A blocking mechanism is provided to block the foam boxes in the stacking pipe 21. Each blocking member 33 adopts a chain-like control method. Before the blocking member 33 of the stacking pipe 21 of the next layer is released, the foam boxes in the stacking pipe 21 of the previous layer are continuously blocked so that they cannot move to the outlet 212. Only after the blocking member 33 of the stacking pipe 21 of the next layer is released, the blocking member 33 of the stacking pipe 21 of the previous layer is retracted and released, thereby ensuring that the foam boxes in the stacking pipes 21 of each layer are stacked in sequence from low to high, thereby avoiding the problem that the foam boxes in the upper layer fall into place faster than the foam boxes in the lower layer and cause blockage. The trigger cylinder 4 and the blocking cylinder 3 are connected to each other to control the extension and retraction of the blocking member 33. The trigger cylinder 4 functions like an air pump and can pump air into or out of the blocking cylinder 3. The foam box of the next layer of stacking pipe 21 contacts and pushes the trigger pressure plate 43 through the outlet 212. The trigger pressure plate 43 drives the positioning rod 45 to unlock the trigger piston rod 41, so that the trigger cylinder 4 is triggered to pump air to the blocking cylinder 3 of the upper layer of stacking pipe 21, thereby driving the blocking piston rod 31 to drive the corresponding blocking member 33 to retract, and the foam box of the upper layer of stacking pipe 21 can be blown out by the two-way fan. When the conveyor belt 22 is arranged in the first way, the movement of the baffle 51 when releasing the foam box drives the trigger piston rod 41 to be pressed back, so that the trigger cylinder 4 draws air from the blocking cylinder 3, and the blocking piston rod 31 is driven by the airflow to reset and extend, so that the corresponding blocking member 33 can be driven to reset and extend to block the foam box to be unloaded next time. When the conveyor belt 22 is arranged in arrangement 2, a linkage mechanism can be designed to drive the pressing back trigger piston rod 41 to reset through the rotation of the conveyor belt 22. This is another embodiment and will not be described in detail here.

[0042] In other embodiments, the foam boxes can also be stacked from bottom to top by controlling the two-way fan to blow air in a time-sharing manner. The two-way fan corresponding to the bottom stacking pipe 21 blows air first to blow the corresponding foam box into the stacking pipe 21. After a certain period of time, the two-way fan corresponding to the upper stacking pipe 21 blows air again to blow the corresponding foam box into the stacking pipe 21 of this layer, and so on. The purpose of stacking the foam boxes from low to high can also be achieved. However, in order to allow the foam box to pass through, the internal size of the stacking pipe 21 is slightly larger than the external size of the foam box, that is, when the foam box passes through the stacking pipe 21, there is a gap between the two. Since the foam box is moved by the airflow blown out by the two-way fan, the direction of the thrust it receives will randomly change slightly, causing the foam box to constantly collide with the inner wall of the stacking pipe 21 when passing through the stacking pipe 21. In addition, the foam box is elastic, and the frequency and intensity of the collision between the foam box and the stacking pipe 21 may continue to increase during the passage, and the foam box may also flip over during the collision. Due to these factors, when the foam box passes through the stacking pipe 21, there is a small probability that it will flip to a certain angle and get stuck after a strong collision, or the foam boxes in the lower stacking pipe 21 collide more frequently, resulting in too long a passage time, and the foam boxes in the upper stacking pipe 21 arrive at the stacking position earlier, and after falling, they block the foam boxes in the lower stacking pipe 21, thereby failing to achieve the purpose of stacking from low to high. In comparison, in this embodiment, the physical blocking method of the blocking member 33 is used to achieve higher reliability. The two implementation methods have their own characteristics and can be selected according to the situation.

[0043] The foam box is blocked and cannot move toward the outlet 212. At this time, if all the airflow generated by the two-way fan continues to act on the foam box, the foam box is likely to be deformed due to the excessive wind pressure. Figure 3 As shown, the stacking pipe 21 of this embodiment is provided with an air vent 213, and a flip cover 2131 is provided at the air vent 213. The flip cover 2131 can be closed at the air vent 213 by its own weight, or driven to close by a torsion spring. When the foam box is blocked by the blocking member 33, the airflow generated by the two-way fan pushes the flip cover 2131 open to be discharged from the air vent 213. By providing the air vent 213 in the stacking pipe 21, the airflow when the foam box is blocked can be discharged from the air vent 213, thereby preventing the foam box from being deformed due to excessive wind pressure.

[0044] The specific working process of the foam molding equipment provided in this embodiment is as follows:

[0045] After the forming mold 6 is opened, the lifting cylinder 13 drives the collection frame 12 to move up, and each collection frame 12 is aligned with the corresponding foam box 7. The demoulding mechanism pushes each foam box 7 into the corresponding collection frame 12, and the two-way fan draws air outward, and the foam box 7 is adsorbed in the collection frame 12. The lifting cylinder 13 drives the collection frame 12 to move down, and each collection frame 12 is aligned with the inlet 211 of the corresponding stacking pipe. The two-way fan blows air to unload each foam box 7 into the corresponding stacking pipe 21. The foam box 7 in the stacking pipe at the bottom layer (set as the first layer) does not need to be blocked, and it directly passes through the stacking pipe 21 and the stacking pipe at the top The foam box 7 in the stacking channel is blocked by the corresponding blocking member 33. At this time, the flap 2131 in the stacking pipe above is lifted up by the airflow, and the airflow is discharged from the air vent 213. The foam box 7 in the stacking pipe at the bottom layer is pushed by the airflow to contact the flip step 214 and flip along the flip guide arc surface 215 to turn the opening upward. After the foam box 7 reaches the outlet 212, it is blocked by the baffle 51, which contacts and pushes the corresponding trigger pressure plate 43. The trigger pressure plate 43 drives the positioning rod 45 to disengage from the trigger piston rod 41. The trigger piston rod 41 extends out and compresses the gas under the push of the trigger spring 46, so that the trigger cylinder 4 pumps the blocking cylinder 3 of the second layer toward the trigger cylinder 4. The air flow enters the blocking cylinder 32 of the second layer, and the corresponding blocking piston rod 31 is pushed and retracted by the air flow, and the corresponding blocking member 33 is driven to retract, thereby releasing the foam box 7 of the second layer. After the foam box 7 of the second layer is blown out of the second layer stacking pipe 21, it contacts and pushes the trigger pressure plate 43 located on the second layer, and the foam boxes 7 of the second layer fall down and are stacked along the guide plate 52 at the same time. The blocking member 33 of the third layer is triggered and driven to retract (the triggering process is not repeated here), and the foam boxes 7 of the third layer are blown out and stacked. At this point, the stacking of the foam boxes 7 of this embodiment is completed, and then the cylinder 5 is driven to drive the baffle 51 to release the stacked foam box stack, and the transmission The conveyor belt 22 runs to transport the foam box stack out. After the trigger pressure plate 43 is out of contact with the foam box 7, it is reset and popped out under the action of the reset spring 44. When the baffle 51 is driven to the preset position, each trigger piston rod 41 contacts the cylinder bracket 53 and is pressed back into its respective trigger cylinder body 42, and is re-engaged with the positioning rod 45. The air is drawn from the blocking cylinder body 32 into the corresponding trigger cylinder body 42, so that the corresponding blocking piston rod 31 is pushed out by the airflow, and the corresponding blocking member 33 is driven to reset and extend. The driving cylinder 5 drives the baffle 51 to slide back to the front of the stacking pipe. Each mechanism completes the reset and prepares for the next working cycle.

[0046] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention, rather than to limit the scope of protection of the present invention. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solution of the present invention can be modified or replaced by equivalents without departing from the essence and scope of the technical solution of the present invention.

Claims

1. Foam molding equipment, used for manufacturing foam boxes with openings, including a molding mold and a demoulding mechanism. After the molding mold is opened, the demoulding mechanism pushes out the foam box formed in the molding mold, which is characterized by: It also includes a collecting and transferring device, which includes a two-way fan, a collecting frame and a lifting mechanism. The lifting mechanism is used to drive the collecting frame to move up and down. The collecting frame corresponds to the foam box formed by the molding mold at one time. An opening is provided on the side of the collecting frame for the foam box to enter. The two-way fan is connected to the collecting frame to extract the air in the collecting frame. After the molding mold is opened, the lifting mechanism drives the collecting frame to move up so that each collecting frame is aligned with the corresponding foam box, and the opening of the foam box faces the collecting frame. The demoulding mechanism pushes the foam box into the collecting frame, and the two-way fan draws air outward to make the foam box adsorbed in the collecting frame to prevent it from accidentally falling. The lifting mechanism drives the collecting frame to move down to a preset position to unload the foam box. It also includes a conveying and stacking device, which includes: A stacking pipe, wherein the stacking pipe is provided with an inlet and an outlet, and the number of the stacking pipes is the same as the number of foam boxes formed at one time and corresponds one to one; A guide mechanism is provided at the outlet of the stacking pipe to guide the foam boxes to be stacked, and can be moved to release the stacked foam boxes; A conveyor belt for conveying foam boxes stacked thereon; After the collecting frame moves down to the preset position, the foam boxes in each collecting frame are respectively aligned with the entrances of the corresponding stacking pipes, and the two-way fan blows each foam box into the corresponding stacking pipe and pushes it to the exit of the stacking pipe. The guiding mechanism blocks and limits the foam boxes pushed out from the exits of each stacking pipe, so that each foam box falls to the preset position of the conveyor belt and is stacked. After the stacking is completed, the guiding mechanism moves to release the foam box.

2. The foam forming apparatus according to claim 1, wherein: The stacking pipe is provided with a flip section, which includes a flip step and a flip guide arc surface. During the movement of the foam box in the stacking pipe, it is blocked by the flip step and flipped along the flip guide arc surface, so that the foam box is flipped to the opening facing upward.

3. The foam forming apparatus according to claim 1, wherein: The stacking pipes are arranged in multiple columns, and multiple stacking pipes in each column are stacked up and down. The stacking pipes are also provided with a blocking mechanism for blocking the foam boxes. The blocking mechanism includes a blocking member, which extends to block the foam boxes from moving toward the outlet of the stacking pipe. After the foam boxes passing through the stacking pipe of the next layer are stacked, the blocking member of the stacking pipe of the previous layer is retracted to allow the foam boxes to move toward the outlet of the stacking pipe, so as to ensure that the foam boxes passing through the stacking pipes of each layer are stacked in order from low to high.

4. The foam forming apparatus as claimed in claim 3, characterized in that: The blocking mechanism also includes: The blocking cylinder comprises a blocking piston rod and a blocking cylinder body, wherein the blocking piston rod is slidably connected to the blocking cylinder body, and the blocking piston rod is fixedly connected to the blocking member; The trigger cylinder comprises a trigger piston rod, a trigger cylinder body and a trigger spring. The trigger piston rod is slidably connected to the trigger cylinder body to pump air and exhaust air. The trigger cylinder body is connected to a blocking cylinder body of an upper stacking pipeline so that the trigger piston rod can pump air into or extract air from the blocking cylinder body. The trigger spring is respectively connected to the trigger piston rod and the trigger cylinder body to provide elastic force to push the trigger piston rod to extend. A trigger assembly is arranged on the guide mechanism, and includes a trigger pressure plate, a reset spring and a locking rod. The trigger pressure plate is arranged on the guide mechanism so that the foam box can contact and push the trigger pressure plate after being pushed out of the stacking pipe. The reset spring is connected to the trigger pressure plate to provide elastic force for the trigger pressure plate to reset and push out. One end of the locking rod is fixedly connected to the trigger pressure plate to move with the trigger pressure plate, and the other end penetrates one side of the trigger cylinder to extend into the trigger cylinder to lock the trigger piston rod. When the foam box located in the stacking pipe of the next layer is pushed out of the stacking pipe, the foam box contacts and pushes the trigger pressure plate, which drives the positioning rod to disengage from the contact with the trigger piston rod. The trigger piston rod is extended under the push of the trigger spring to pump air into the blocking cylinder of the stacking pipe of the previous layer, and its blocking piston rod is pushed back by the airflow to cause the corresponding blocking member to be driven back, thereby releasing the foam box in the stacking pipe of the previous layer. After stacking is completed, the release guide mechanism moves to press the trigger piston rod back, which extracts the air in the blocking cylinder of the stacking pipe of the previous layer, and its blocking piston rod drives the corresponding blocking member to extend.

5. The foam forming apparatus according to claim 3 or 4, characterized in that: The stacking pipeline is provided with an air vent, and a flip cover is provided at the air vent. When the foam box is blocked by the blocking member, the airflow generated by the two-way fan can push the flip cover open to discharge from the air vent.

6. The foam forming apparatus according to claim 1, wherein: The lifting mechanism includes a lifting cylinder, a connecting plate and a slide groove. The connecting plate is fixedly connected to the lifting cylinder, and the connecting plate is slidably connected in the slide groove. The collection frames are fixedly connected to the connecting plate. The lifting cylinder drives the connecting plate to move up and down in the slide groove to drive the collection frame to move up and down.

7. The foam forming apparatus according to claim 1, wherein: The release guiding mechanism includes a baffle and a driving cylinder. With the direction in which the foam box is blown as the front, the baffle is located in front of the outlet of the stacking pipe to block the foam box passing through the outlet. The baffle can slide left and right and is connected to the driving cylinder. Two guide plates are respectively provided on the left and right sides of the outlet of the stacking pipe. After the foam box is pushed out of the stacking pipe, its front side contacts the baffle, and its left and right sides contact the two guide plates respectively, so that the foam box falls along the surface of the baffle and the guide plate to the preset position of the conveyor belt. After the foam box is stacked, the driving cylinder drives the baffle to slide to release the foam box.

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