A kind of initial polyurethane sponge block exhaust hole cooling device

Abstract

The application provides a kind of initial polyurethane sponge block exhaust hole breaking cooling device, including workbench, conveying belt, conveying motor and support frame, the left and right ends of the upper surface of workbench are all rotatably connected with conveying belt by transmission roller, the left and right ends of the bottom of workbench are fixed with conveying motor, the upper surface of workbench is fixed with support frame in the middle, the top of support frame and the middle part of the bottom of workbench are all fixed with air cooler, the left and right ends of support frame are all fixed with outer frame, the upper surface of outer frame is all fixed with electric push rod in the middle, the front and rear ends of the top of support frame and the front and rear ends of the bottom of workbench are respectively vertically fixed with upper hydraulic cylinder and lower hydraulic cylinder, the initial polyurethane sponge block is not easy to scratch or damage during hole breaking, the hole breaking effect is better, and the interior and surface of the initial polyurethane sponge block can be cooled at the same time, the hole breaking and cooling efficiency is higher, and the use is more convenient.

Description

Technical Field

[0001] This invention relates to the field of cooling equipment technology, and in particular to a cooling device for venting and puncturing a primary polyurethane sponge block. Background Technology

[0002] During the polyurethane foaming process, the initially foamed foam blocks need to be perforated, degassed, and cooled. Existing technology uses a rolling mill to roll the initially foamed foam blocks, causing the air bubbles inside the foam blocks to be squeezed and burst, and then left to cool naturally at room temperature. Because the newly produced foam blocks are large in volume and thickness, and the top, bottom, and side skins are dense and impermeable, the existing traditional rolling perforation method cannot achieve a good perforation and degassing effect. The internal temperature of the newly produced foam blocks will exceed 100°C, and the internal temperature needs to be cooled to room temperature in a natural environment for about 3 days. This requires a long time for the foam blocks to cool and mature, which is not conducive to the production of foam and occupies a lot of storage space for the newly produced foam blocks.

[0003] Therefore, the prior art proposes a venting and puncturing cooling device for initial polyurethane sponge blocks, patent number CN201810151409.1. This device involves welding puncturing steel needles onto the surface of a roller, creating a rolling and evenly distributed pattern where the rollers puncture the sponge surface, making the venting and puncturing effect of the initial sponge block more effective and enhancing its resilience. A suction fan is installed on the sponge block conveyor platform to quickly extract the hot air from the initial sponge block, increasing the indoor cooling and curing speed of the sponge block, reducing the sponge production turnaround time, reducing the indoor space required for stacking the initial sponge blocks, lowering production costs, and increasing productivity.

[0004] However, during the initial polyurethane foam block is fed into the venting and venting rolling mill from the input foam block conveyor, the venting steel needles installed on the surface of the upper and lower rollers are simultaneously embedded inside the initial polyurethane foam block. At this time, when the upper and lower rollers rotate continuously, the rotating venting steel needles are not pulled out from inside the polyurethane foam block, which can easily cause scratches and pulls on the surface of the initial polyurethane foam block, and may even cause the initial polyurethane foam block to break and be damaged, resulting in poor venting effect. Summary of the Invention

[0005] To solve the above-mentioned technical problems, the present invention provides a device for venting and puncturing the initial polyurethane sponge block for cooling, thereby solving the problems described in the background art.

[0006] This invention discloses a device for venting and puncturing the initial polyurethane foam block to cool it. The device comprises a workbench, a conveyor belt, a conveyor motor, and a support frame. The left and right ends of the upper surface of the workbench are rotatably connected to the conveyor belt via transmission rollers. The left and right ends of the bottom of the workbench are fixed with conveyor motors. A support frame is fixed to the middle of the upper surface of the workbench. Cooling fans are fixed to the top of the support frame and the middle of the bottom of the workbench. Outer frames are fixed to the left and right ends of the support frame. Electric push rods are fixed to the middle of the upper surface of the outer frames. Upper and lower hydraulic cylinders are vertically fixed to the front and rear ends of the top of the support frame and the front and rear ends of the bottom of the workbench, respectively. Upper and lower pressure plates are fixed to one end of the push rods at the output ends of the upper and lower hydraulic cylinders, respectively. Cooling components are provided on the inner sides of both the upper and lower pressure plates.

[0007] As a further embodiment of the present invention: the cooling component consists of a perforated column, a perforated head, an inner disc, a return spring, and an extension cylinder;

[0008] Specifically, the bottom end of the upper pressure plate and the upper surface of the lower pressure plate are both vertically fixed with a piercing column, the inner side of the piercing column is fixed with a piercing head, the inner and outer sides of the piercing column are embedded with an inner plate, the inner side of the inner plate is vertically connected with a return spring, and the inner middle of the inner side of the inner plate is vertically fixed with an extension cylinder.

[0009] As a further embodiment of the present invention: the lower pressure plate is disposed below the two conveyor belts, the upper pressure plate is disposed above the two conveyor belts, the middle parts of the upper pressure plate and the lower pressure plate are both located on the same vertical horizontal plane, and the cross-sectional area of ​​the upper pressure plate and the lower pressure plate is the same.

[0010] As a further aspect of the present invention: the perforated columns are arranged in a rectangular shape at equal intervals on the bottom end of the upper pressure plate and the upper surface of the lower pressure plate, and the perforated columns at the bottom end of the upper pressure plate are positioned above the adjacent perforated columns at the front and rear ends of the lower pressure plate.

[0011] As a further aspect of the present invention: the exhaust ends of the two air coolers are respectively connected to the hollow grooves inside the upper and lower pressure plates through threaded extension pipes, and the air inlet end of the perforated column is connected to the hollow grooves inside the upper and lower pressure plates.

[0012] As a further aspect of the present invention: a hollow annular groove is provided in the upper opening of the perforated column in the upper pressure plate, and the inner disk is embedded in the hollow annular groove. The cross-sectional area of ​​the inner disk is the same as the cross-sectional area of ​​the hollow annular groove, and the outer side of the inner disk is in close contact with the outermost side of the hollow annular groove.

[0013] As a further aspect of the present invention: an air intake channel is provided in the inner outer opening of the inner disk, the exhaust end of the air intake channel is connected to the interior of the extension cylinder, and the air intake port of the air intake channel is exactly close to the top of the hollow annular groove.

[0014] As a further aspect of the present invention: both the interior of the perforating column and the interior of the extension cylinder are provided with vent holes in an annular shape at equal intervals from top to bottom; the outer wall of the extension cylinder is in close contact with the inner wall of the perforating column; and the extension cylinder moves up and down vertically inside the perforating column.

[0015] As a further aspect of the present invention: when the extension cylinder in the upper pressure plate moves to the lowest position, the vent hole in the puncture column is located just outside the vent hole in the extension cylinder, and the vent hole in the puncture column is the same size as the vent hole in the extension cylinder.

[0016] As a further aspect of the present invention: the output ends of the two electric push rods are connected to the mounting plates through push rods and connecting rods, the two mounting plates are symmetrically arranged around the longitudinal central axis of the support frame, and the bottom end of the guide wheel and the bottom end of the hole head below the hole-breaking column in the upper pressure plate are on the same horizontal plane.

[0017] Beneficial effects:

[0018] 1. When the conveyor belt transports the nascent polyurethane foam to the support frame, the upper and lower hydraulic cylinders simultaneously push the upper pressure plate downward and the lower pressure plate upward. At this time, the perforating columns of the upper and lower pressure plates simultaneously embed themselves into the upper and lower ends of the nascent polyurethane foam block to perform perforation. After perforation, two cooling fans simultaneously generate cold air which enters the exhaust holes inside the perforating columns and is discharged, blowing towards the interior of the nascent polyurethane foam block. Afterward, the airflow will move outward along the newly perforated holes, interacting with the upper and lower surfaces of the nascent polyurethane foam block. The upper and lower pressure plates on the surface are in contact. Guided by the upper and lower pressure plates, the material moves left or right along the upper and lower surfaces of the nascent polyurethane sponge block, simultaneously cooling the interior and surface of the nascent polyurethane sponge block. The cooling effect is good. The upper and lower hydraulic cylinders simultaneously pull the perforating column of the upper and lower pressure plates out of the nascent polyurethane sponge block before the conveyor belt transports it again. During the perforation process, the nascent polyurethane sponge block is less likely to be scratched or damaged, resulting in a better perforation effect and making it more convenient to use.

[0019] 2. During the conveyor belt transport of the initial polyurethane foam block, the electric push rods at the left and right ends of the support frame pull the mounting plate downwards via connecting rods. This causes the guide wheels under the mounting plate to press tightly against the upper surface of the initial polyurethane foam block during transport. After the hole is broken, when the upper hydraulic cylinder pulls out the upper pressure plate, the guide wheels can limit the initial polyurethane foam block, preventing it from moving upwards along with the upper pressure plate when the hole-breaking column of the upper pressure plate is pulled out. This would prevent the initial polyurethane foam block from getting stuck inside the support frame or falling off the conveyor belt during transport, thus affecting the operation of the device and further improving the hole-breaking efficiency of the device. Attached Figure Description

[0020] Figure 1 This is a front view of the overall structure of the present invention;

[0021] Figure 2 This is a front cross-sectional view of the overall structure in this invention;

[0022] Figure 3 This is a partial structural diagram of the upper and lower pressure plates in this invention;

[0023] Figure 4 This is a schematic diagram of a partial structure of the perforated column in this invention;

[0024] Figure 5 This is a partial exploded view of the perforated column structure in this invention;

[0025] Figure 6 This is a schematic cross-sectional view of a portion of the perforated column in this invention;

[0026] Figure 7 This is a schematic diagram of the bottom surface of a partial structure of the mounting plate in this invention.

[0027] Legend:

[0028] Workbench 1, conveyor belt 101, conveyor motor 102, support frame 103, air cooler 104, outer frame 2, electric push rod 201, mounting plate 202, guide wheel 203, upper hydraulic cylinder 204, lower hydraulic cylinder 205, upper pressure plate 3, lower pressure plate 4, piercing column 5, piercing head 501, inner plate 502, return spring 503, extension cylinder 504. Detailed Implementation

[0029] Example 1, please refer to Figure 1-7A device for venting and puncturing polyurethane sponge blocks to cool down includes a workbench 1, a conveyor belt 101, a conveyor motor 102, and a support frame 103. The left and right ends of the upper surface of the workbench 1 are rotatably connected to the conveyor belt 101 via transmission rollers. The left and right ends of the bottom of the workbench 1 are fixed with the conveyor motor 102. The support frame 103 is fixed in the middle of the upper surface of the workbench 1. The top of the support frame 103 and the middle of the bottom of the workbench 1 are both fixed with a cooler 104. The left and right ends of the support frame 103 are both fixed with an outer frame 2. The middle of the upper surface of the outer frame 2 is fixed with an electric push rod 201. The front and rear ends of the top of the support frame 103 and the front and rear ends of the bottom of the workbench 1 are respectively vertically fixed with an upper hydraulic cylinder 204 and a lower hydraulic cylinder 205. The push rods at the output ends of the upper hydraulic cylinder 204 and the lower hydraulic cylinder 205 are respectively fixed with an upper pressure plate 3 and a lower pressure plate 4. Cooling components are provided on the inner sides of the upper pressure plate 3 and the lower pressure plate 4.

[0030] The cooling assembly consists of a perforating column 5, a perforating head 501, an inner disc 502, a return spring 503, and an extension cylinder 504.

[0031] The bottom end of the upper pressure plate 3 and the upper surface of the lower pressure plate 4 are both vertically fixed with a hole-breaking column 5. A hole-breaking head 501 is fixed on the inner side of the hole-breaking column 5. An inner plate 502 is embedded in both the inner and outer sides of the hole-breaking column 5. A return spring 503 is vertically connected to the inner side of the inner plate 502. An extension cylinder 504 is vertically fixed in the middle of the inner side of the inner plate 502.

[0032] The lower pressure plate 4 is located below the two conveyor belts 101, and the upper pressure plate 3 is located above the two conveyor belts 101. The middle parts of the upper pressure plate 3 and the lower pressure plate 4 are on the same vertical horizontal plane, and the cross-sectional area of ​​the upper pressure plate 3 and the lower pressure plate 4 is the same.

[0033] During the process of the conveyor motor 102 driving the conveyor roller to rotate the conveyor belt 101, the conveyor belt 101 will transport the initial polyurethane sponge to the middle of the support frame 103. At this time, the upper hydraulic cylinder 204 and the lower hydraulic cylinder 205 simultaneously push the upper pressure plate 3 to move down and the lower pressure plate 4 to move up. At this time, the perforating column 5 of the upper pressure plate 3 and the perforating column 5 of the lower pressure plate 4 are simultaneously embedded in the upper and lower ends of the initial polyurethane sponge block to perform perforation operation. After the perforation is completed, the upper hydraulic cylinder 204 and the lower hydraulic cylinder 205 simultaneously pull the perforating column 5 of the upper pressure plate 3 and the lower pressure plate 4 out of the initial polyurethane sponge block, and then the conveyor belt 101 will transport it again.

[0034] The perforated columns 5 are arranged in a rectangular shape at equal intervals at the bottom end of the upper pressure plate 3 and the upper surface of the lower pressure plate 4. The perforated columns 5 at the bottom end of the upper pressure plate 3 are positioned above the adjacent perforated columns 5 at the front and rear ends of the lower pressure plate 4.

[0035] Since the perforation columns 5 of the upper pressure plate 3 and the lower pressure plate 4 are not on the same vertical horizontal plane, the perforation columns 5 at the upper and lower ends of the initial polyurethane sponge block will not collide or come into contact with each other during the perforation process.

[0036] The exhaust ends of the two air coolers 104 are connected to the hollow grooves inside the upper pressure plate 3 and the lower pressure plate 4 through threaded extension pipes, respectively, and the air inlet end of the puncture column 5 is connected to the hollow grooves inside the upper pressure plate 3 and the lower pressure plate 4.

[0037] After the perforation column 5 of the upper pressure plate 3 and the perforation column 5 of the lower pressure plate 4 are simultaneously embedded in the upper and lower ends of the initial polyurethane foam block to perform perforation operation, the two cold air blowers 104 simultaneously generate cold air that enters the upper pressure plate 3 and the lower pressure plate 4, and then enters the exhaust hole inside the perforation column 5 and is discharged, blowing towards the interior of the initial polyurethane foam block. Then the airflow will move outward along the newly perforated hole and come into contact with the upper pressure plate 3 and the lower pressure plate 4 which are close to the upper and lower surfaces of the initial polyurethane foam block. Guided by the upper pressure plate 3 and the lower pressure plate 4, it moves left or right along the upper and lower surfaces of the initial polyurethane foam block, simultaneously cooling the interior and surface of the initial polyurethane foam block, with a good cooling effect.

[0038] Example 2, please refer to Figure 1-7 The difference between Example 2 and Example 1 is that a hollow annular groove is provided in the upper opening of the perforated column 5 in the upper pressure plate 3. The inner plate 502 is embedded in the hollow annular groove. The cross-sectional area of ​​the inner plate 502 is the same as the cross-sectional area of ​​the hollow annular groove. The outer side of the inner plate 502 is close to the outermost side of the hollow annular groove.

[0039] An air intake channel is provided in the inner outer opening of the inner plate 502. The exhaust end of the air intake channel is connected to the inside of the extension tube 504. The air intake port of the air intake channel is right next to the top of the hollow annular groove.

[0040] After the airflow generated by the air cooler 104 enters the interior of the perforated column 5 through the hollow groove inside the upper pressure plate 3, the inner plate 502 will move down along the hollow annular groove due to the air pressure, squeezing the return spring 503 below it. At the same time, the extension cylinder 504 below the inner plate 502 moves down in the perforated column 5. At this time, the air intake channel on the outer side of the upper surface of the inner plate 502 is not covered, so the airflow will enter the extension cylinder 504 at the bottom center along the air intake channel on the outer side of the inner plate 502. After that, the airflow will pass through the exhaust port of the extension cylinder 504 and the perforated column 5 and be discharged.

[0041] Both the interior of the puncture column 5 and the interior of the extension cylinder 504 are provided with vent holes in a circular shape at equal intervals from top to bottom. The outer wall of the extension cylinder 504 is in close contact with the inner wall of the puncture column 5, and the extension cylinder 504 moves up and down vertically inside the puncture column 5.

[0042] When the extension cylinder 504 in the upper pressure plate 3 moves to the bottom, the vent hole in the puncture column 5 is located outside the vent hole in the extension cylinder 504, and the vent hole in the puncture column 5 is the same size as the vent hole in the extension cylinder 504.

[0043] When the air cooler 104 is not working, the compressed return spring 503 returns to its original position, pushing the inner plate 502 upward to press against the hollow annular groove inside the puncture column 5. At the same time, the extension tube 504 at the bottom of the inner plate 502 moves upward, so that the exhaust port of the extension tube 504 is not located inside the exhaust port of the puncture column 5, thus preventing the initial polyurethane sponge block from entering the interior of the puncture column 5 along the exhaust port during the puncture process, and preventing the initial polyurethane sponge block from remaining inside the puncture column 5.

[0044] Example 3, please refer to Figure 1-7 The difference between Embodiment 3 and Embodiment 2 is that the output ends of the two electric push rods 201 are connected to the mounting plate 202 through push rods and connecting rods. The two mounting plates 202 are symmetrically arranged around the longitudinal central axis of the support frame 103. The bottom end of the guide wheel 203 and the bottom end of the hole head 501 below the hole column 5 in the upper pressure plate 3 are on the same horizontal plane.

[0045] During the conveyor belt 101 conveys the initial polyurethane sponge block, the electric push rods 201 at the left and right ends of the two outer frames 2 pull the mounting plate 202 down through the connecting rod, so that the guide wheel 203 under the mounting plate 202 will be in close contact with the upper surface of the initial polyurethane sponge block during the conveying process, which can prevent the initial polyurethane sponge block from sliding up and down back and forth during the hole breaking process to a certain extent.

[0046] When the initial polyurethane foam block is punctured, the guide wheel 203 can limit the upper part of the initial polyurethane foam block when the upper pressure plate 3 is pulled out by the upper hydraulic cylinder 204. This prevents the initial polyurethane foam block from moving upwards along with the upper pressure plate 3 when the puncturing column 5 of the upper pressure plate 3 is pulled out, which would cause the initial polyurethane foam block to get stuck inside the support frame 103 or to deviate and fall off from the conveyor belt 101 during the conveying process, thus affecting the operation of the device and further improving the puncturing efficiency of the device.

[0047] The above are merely preferred embodiments of the present invention. It should be noted that those skilled in the art can make several modifications and improvements without departing from the concept of the present invention, and these should also be considered within the scope of protection of the present invention. These will not affect the effectiveness of the implementation of the present invention or the practicality of the patent.

Claims

1. A device for venting, puncturing, and cooling a primary polyurethane sponge block, comprising a workbench, a conveyor belt, a conveyor motor, and a support frame, wherein the left and right ends of the upper surface of the workbench are rotatably connected to the conveyor belt via transmission rollers, the left and right ends of the bottom of the workbench are fixed with the conveyor motor, and the support frame is fixed in the middle of the upper surface of the workbench, characterized in that... A cool air blower is fixed to the top of the support frame and the middle of the bottom of the workbench. An outer frame is fixed to the left and right ends of the support frame. An electric push rod is fixed to the middle of the upper surface of the outer frame. An upper hydraulic cylinder and a lower hydraulic cylinder are vertically fixed to the front and rear ends of the top of the support frame and the front and rear ends of the bottom of the workbench, respectively. An upper pressure plate and a lower pressure plate are fixed to one end of the push rod at the output end of the upper hydraulic cylinder and the lower hydraulic cylinder, respectively. Cooling components are provided on the inner side of the upper pressure plate and the lower pressure plate. The cooling assembly consists of a perforated column, a perforated head, an inner disc, a return spring, and an extension cylinder. Both the bottom end of the upper pressure plate and the upper surface of the lower pressure plate are vertically fixed with a piercing column. A piercing head is fixed to the inner side of each piercing column. An inner plate is embedded in both the inner and outer sides of each piercing column. A return spring is vertically connected to the inner side of the inner plate. An extension cylinder is vertically fixed to the middle of the inner side of the inner plate. The exhaust ends of the two air coolers are respectively connected to the hollow grooves inside the upper and lower pressure plates through threaded extension pipes, and the air inlet end of the perforated column is connected to the hollow grooves inside the upper and lower pressure plates. The upper opening of the perforated column in the upper pressure plate is provided with a hollow annular groove. The inner plate is perfectly embedded in the hollow annular groove. The cross-sectional area of ​​the inner plate is the same as that of the hollow annular groove. The outer side of the inner plate is in close contact with the outermost side of the hollow annular groove. An air intake channel is provided at the inner outer opening of the inner disc. The exhaust end of the air intake channel is connected to the inside of the extension cylinder. The air intake port of the air intake channel is exactly close to the top of the hollow annular groove. Both the interior of the perforating column and the interior of the extension tube are provided with vent holes in a circular pattern at equal intervals from top to bottom. The outer wall of the extension tube is in close contact with the inner wall of the perforating column, and the extension tube moves up and down vertically inside the perforating column. When the extension cylinder in the upper pressure plate moves to the lowest position, the vent hole in the puncture column is located outside the vent hole in the extension cylinder, and the vent hole in the puncture column is the same size as the vent hole in the extension cylinder.

2. The initial polyurethane sponge block venting and pore-breaking cooling device according to claim 1, characterized in that, The lower pressure plate is positioned below the two conveyor belts, and the upper pressure plate is positioned above the two conveyor belts. The middle portions of the upper and lower pressure plates are both on the same vertical horizontal plane, and the cross-sectional areas of the upper and lower pressure plates are the same.

3. The initial polyurethane sponge block venting and pore-breaking cooling device according to claim 1, characterized in that, The perforated columns are arranged in a rectangular shape at equal intervals at the bottom end of the upper pressure plate and the upper surface of the lower pressure plate. The perforated columns at the bottom end of the upper pressure plate are positioned above the adjacent perforated columns at the front and rear ends of the lower pressure plate.

4. The initial polyurethane sponge block venting and pore-breaking cooling device according to claim 1, characterized in that, The output ends of both electric push rods are connected to the mounting plates via push rods and connecting rods. The two mounting plates are symmetrically arranged around the longitudinal central axis of the support frame. The bottom end of the guide wheel and the bottom end of the hole head below the hole-breaking column in the upper pressure plate are on the same horizontal plane.

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