A thickness adjustment device for PVC materials used in carpet processing

Abstract

The present invention relates to the technical field of carpet processing, and discloses a thickness adjustment device for PVC materials used in carpet processing. The present invention has the following advantages and effects: while the surface layer of the PVC composite carpet is placed on a support platform during transportation, the molten PVC material enters the surface layer through the blanking die of the extruder, and when the PVC material collapses and flows, it is blocked by limit baffles on both sides. After the PVC material is spread and leveled by a scraper, a PVC bottom layer of PVC material of a desired thickness is formed on the surface layer; and when the lifting cylinder drives the support beam to rise and fall, the scraper can be driven to rise and fall to adjust the thickness of the PVC bottom layer formed by the PVC material. At this time, the limit baffle can be ensured to always be in contact with the surface layer under the adjustment of the elastic connection component; and the width of the formed PVC bottom layer can be adjusted by adjusting the position of the sliding seat on the slide rod component.

Description

Technical Field

[0001] The invention relates to the technical field of carpet processing, in particular to a thickness adjustment device for PVC materials used in carpet processing. Background Art

[0002] PVC composite carpet is a composite carpet that uses polyvinyl chloride resin (PVC) material as the base material. PVC carpet has the characteristics of soft texture, bright colors, comfort and durability, easy cleaning, non-flammable and self-extinguishing, and moisture resistance. For example, the Chinese patent with authorization announcement number CN215396727U and authorization announcement date of January 4, 2022 discloses a PVC carpet production equipment, including an extruder, a blanking die head and an extrusion molding device. The molten PVC material is squeezed through the extrusion molding device to form it, and the distance between the first and second pressing rollers can be adjusted by adjusting the screw to adjust the thickness of the carpet (which can also be used as the PVC base layer).

[0003] In the above-mentioned comparative patent, PVC material is calendered and formed by an extrusion molding device to obtain a PVC carpet (which can also be used as a PVC base layer). If a PVC carpet is to be processed, the surface layer and the PVC base layer must be compounded by a carpet bonding machine, resulting in a relatively cumbersome processing procedure. Summary of the Invention

[0004] The purpose of the present invention is to provide a thickness adjustment device for carpet processing PVC materials, which can directly transfer the molten PVC material to the surface layer and form a PVC bottom layer of required thickness on the surface layer through a paving mechanism with adjustable height.

[0005] The above technical objectives of the present invention are achieved through the following technical solutions: a thickness adjustment device for carpet processing PVC material, comprising a frame, a support platform arranged on the frame and supporting the lower surface of the surface layer during transmission, a support beam arranged above the support platform, a lifting cylinder arranged between the two ends of the support beam and the frame, a scraper arranged on the lower surface of the support beam and used to spread and level the PVC material, two limiting mechanisms arranged at the two ends of the support beam and used to limit the paving width of the PVC on the surface layer, the blanking die of the extruder corresponds to the side of the support beam close to the surface layer input so as to directly convey the molten PVC material to the surface layer; the limiting mechanism includes a slide assembly arranged at the end of the support beam and facing the side of the surface layer input direction, a sliding seat slidably arranged on the slide assembly, a locking knob bolt threadedly connected to the slide seat and used to press against the slide assembly, a limit baffle arranged on the slide seat and extending in the direction of the surface layer input, and an elastic connection assembly arranged between the sliding seat and the limit baffle and used to keep the limit baffle elastically pressed against the surface layer during the lifting and lowering process of the support beam, and the limit baffle and the scraper are in conflict.

[0006] By adopting the above technical solution, the surface layer of the PVC composite carpet is placed on the supporting platform during the transportation process, while the molten PVC material enters the surface layer through the blanking die of the extruder. When the PVC material collapses and flows, it is blocked by the limit baffles on both sides. After the PVC material is spread and scraped flat by the scraper, a PVC bottom layer of PVC material of the required thickness is formed on the surface layer; and in the process of the lifting cylinder driving the support beam to rise and fall, the scraper can be driven to rise and fall to adjust the thickness of the PVC bottom layer formed by the PVC material. At this time, the limit baffle can ensure that it is always in contact with the surface layer under the adjustment of the elastic connection component; at the same time, by adjusting the position of the sliding seat on the slide rod assembly, the width of the formed PCV bottom layer can be adjusted.

[0007] The present invention is further configured as follows: the sliding rod assembly includes two support bars, an optical axis arranged between the two support bars, and the sliding seat is slidably connected to the two optical axes; the elastic connection assembly includes two guide shafts arranged on the limit baffle and passing through the sliding seat in the vertical direction, an anti-slip nut threadedly connected to the upper end of the guide shaft, and a first compression spring sleeved on the guide shaft and with both ends pressed between the limit baffle and the sliding seat.

[0008] By adopting the above technical solution, the elastic connection assembly includes a guide shaft, an anti-slip nut and a first compression spring. Under the action of the elastic force of the first compression spring and the self-gravity of the limit baffle, the limit baffle remains elastically pressed against the surface layer during the lifting and lowering process of the support beam.

[0009] The present invention is further configured as follows: a plurality of connecting mechanisms for installing support bars are arranged on the upper surface of the support beam, the spacing between two support bars of the same sliding rod assembly is an integer multiple of the spacing between two adjacent connecting mechanisms, and the end of the support bar is rotatably connected to the connecting mechanism.

[0010] By adopting the above technical solution and setting up multiple connecting mechanisms, the spacing between the two support bars of the same sliding rod assembly can be an integer multiple of the spacing between the two adjacent connecting mechanisms, so that the installation position of the sliding rod assembly can be adjusted, further expanding the adjustment range of the position of the limit baffle.

[0011] The present invention is further configured as follows: an articulated seat is hingedly provided at the end of the support bar, the connecting mechanism includes a connecting block provided on the upper surface of the support beam, a connecting shaft provided on the connecting block and extending in the vertical direction, and a connecting nut threadedly connected to the connecting shaft, the articulated seat is sleeved on the connecting shaft and locked by the connecting nut, and a sliding sleeve is provided on the support bar that moves along its length direction. When the support bar is rotated upward 90 degrees to a vertical state, the sliding sleeve slides downward and is sleeved on the upper end of the connecting shaft to achieve positioning.

[0012] By adopting the above technical solution, the adhered PVC material needs to be cleaned regularly during use. The support beam is driven upward by the lifting cylinder to drive the scraper to move upward, which is convenient for scraping off the PVC material adhered to the scraper. The support bar of the slide rod assembly is rotated upward 90 degrees to a vertical state, and the sliding sleeve is slid downward and then sleeved on the upper end of the connecting shaft to achieve limiting. After the limit baffle is in a vertical state, it is convenient to scrape off the adhered PVC material.

[0013] The present invention is further configured as follows: a positioning block is provided on the support bar, a positioning shaft is provided on the sliding sleeve, the positioning shaft extends along the sliding direction of the sliding sleeve and passes through the positioning block, a second compression spring is sleeved on the positioning shaft, the two ends of which are in contact between the positioning block and the sliding sleeve, and a limit seat is provided on the hinged seat to limit the support bar from rotating downward to a horizontal state.

[0014] By adopting the above technical solution, the sliding sleeve is squeezed by the second compression spring, thereby increasing the stability of the connection when the sliding sleeve is buckled on the upper end of the connecting shaft; at the same time, the setting of the limit seat can limit the support bar to stop rotating when it rotates downward to a horizontal state, so as to ensure that the limit baffle is raised and lowered in the vertical direction.

[0015] The present invention is further configured as follows: anti-overflow plates are provided on the three connecting mechanisms located in the middle, and a connecting sleeve is provided on the rear side of the anti-overflow plate, which is sleeved on the connecting shaft and locked by a connecting nut. The lower end of the anti-overflow plate is in contact with the side of the support beam close to the surface layer input, and the upper end of the anti-overflow plate extends upwardly toward the side close to the surface layer output, and the blanking die head of the extruder corresponds to the anti-overflow plate to prevent the extruded molten PVC material from overflowing onto the support beam.

[0016] By adopting the above technical solution, when the molten PVC material falls from the blanking die of the extruder, the anti-overflow plate can be set to prevent the PVC material from overflowing toward the surface layer output side. At the same time, the anti-overflow plate can be installed on multiple connecting mechanisms and is also convenient for disassembly and assembly.

[0017] The present invention is further configured as follows: an air cooling mechanism is provided on the lower surface of the support platform close to the surface layer output side, and the air cooling mechanism includes an exhaust fan arranged on the frame, a cooling air duct connected to the support platform close to the surface layer output side, an outlet duct connected between the air outlet end of the exhaust fan and the cooling air duct, and a plurality of cooling air nozzles arranged around the cooling air duct and facing the surface layer.

[0018] By adopting the above technical solution, the exhaust fan, cooling air duct, air outlet duct and cooling air nozzle are set to achieve cooling and lowering the temperature on the output side of the surface layer, thereby increasing the molding speed of the PVC bottom layer.

[0019] The present invention is further configured as follows: a negative pressure chamber is provided on the lower surface of the support platform, negative pressure holes distributed in an array are provided in the middle of the support platform, a negative pressure pipe is provided on the negative pressure chamber, a three-way valve is provided at the air inlet end of the exhaust fan, the negative pressure pipe is connected to one of the joints of the three-way valve, and the negative pressure holes are distributed on the side of the support beam close to the input direction of the surface layer.

[0020] By adopting the above technical solution and setting a three-way valve, the exhaust fan can be used to extract air from the negative pressure chamber. At this time, the negative pressure hole can be set to make the surface layer fit more closely against the support platform, making it less likely for the surface layer to curl up due to wrinkles during transmission, thereby improving the thickness uniformity of the PVC bottom layer. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0022] Figure 1 is a schematic structural diagram of Example 1;

[0023] Figure 2 yes Figure 1 Schematic diagram of the structure after removing the frame, support platform and lifting cylinder;

[0024] Figure 3 yes Figure 2 3D structural diagram;

[0025] Figure 4 yes Figure 3 Schematic diagram of the local structure of the foundation;

[0026] Figure 5 yes Figure 2 Schematic diagram of the structure after the upper limit baffle of the foundation is flipped upward;

[0027] Figure 6 It is a structural diagram of Example 2.

[0028] In the figure: 1, frame; 2, support platform; 21, negative pressure chamber; 22, negative pressure hole; 3, support beam; 4, lifting cylinder; 5, scraper; 6, limit mechanism; 61, slide bar assembly; 611, support bar; 612, optical axis; 613, sliding sleeve; 614, positioning block; 615, positioning shaft; 616, second compression spring; 62, sliding seat; 63, locking knob bolt; 64, limit baffle; 65 , elastic connection component; 651, guide shaft; 652, anti-slip nut; 653, first compression spring; 7, connecting mechanism; 71, connecting block; 72, connecting shaft; 73, connecting nut; 8, hinged seat; 81, limit seat; 9, anti-overflow plate; 91, connecting sleeve; 101, exhaust fan; 102, cooling air duct; 103, air outlet duct; 104, cooling air nozzle; 105, negative pressure pipe; 106, three-way valve. DETAILED DESCRIPTION

[0029] The technical solutions of the present invention will be described clearly and completely below with reference to specific embodiments. Obviously, the embodiments described are only some of the embodiments of the present invention, not all of them. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without inventive effort are also within the scope of protection of the present invention.

[0030] Example 1: A thickness adjustment device for PVC materials used in carpet processing, such as Figure 1 and Figure 2 As shown, it includes a frame 1, a support platform 2 arranged on the frame 1 and supporting the lower surface of the surface layer during transmission, a support beam 3 arranged above the support platform 2, a lifting cylinder 4 arranged between the two ends of the support beam 3 and the frame 1, a scraper 5 arranged on the lower surface of the support beam 3 and used to spread and level the PVC material, two limiting mechanisms 6 arranged at both ends of the support beam 3 and limiting the spreading width of the PVC on the surface layer, and the blanking die head of the extruder corresponds to the side of the support beam 3 close to the surface layer input to realize the direct delivery of the molten PVC material to the surface layer.

[0031] like Figures 2 to 4 As shown, the limiting mechanism 6 includes a sliding rod assembly 61 arranged at the end of the support beam 3 and facing the side of the surface layer input direction, a sliding seat 62 slidingly arranged on the sliding rod assembly 61, a locking knob bolt 63 threadedly connected to the sliding seat 62 and used to press against the sliding rod assembly 61, a limiting baffle 64 arranged on the sliding seat 62 and extending toward the surface layer input direction, and an elastic connection assembly 65 arranged between the sliding seat 62 and the limiting baffle 64 and allowing the limiting baffle 64 to remain elastically pressed against the surface layer during the lifting and lowering process of the support beam 3. The limiting baffle 64 is in conflict with the scraper 5.

[0032] like Figures 2 to 4As shown, the sliding rod assembly 61 includes two support bars 611, two optical axes 612 arranged between the two support bars 611, and the sliding seat 62 is slidably connected to the two optical axes 612; the elastic connection assembly 65 includes two guide shafts 651 arranged on the limit baffle 64 and passing through the sliding seat 62 in the vertical direction, an anti-slip nut 652 threadedly connected to the upper end of the guide shaft 651, and a first compression spring 653 sleeved on the guide shaft 651 and with both ends pressed between the limit baffle 64 and the sliding seat 62. The threaded portion on the guide shaft 651 is larger than the thickness of the anti-slip nut 652.

[0033] like Figures 2 to 5 As shown, the upper surface of the support beam 3 is provided with a plurality of connection mechanisms 7 for mounting support bars 611. The spacing between two support bars 611 of the same slide bar assembly 61 is an integer multiple (three times in this embodiment) of the spacing between two adjacent connection mechanisms 7. The end of the support bar 611 is hingedly provided with an articulated seat 8. The connection mechanism 7 includes a connection block 71 provided on the upper surface of the support beam 3, a connecting shaft 72 provided on the connection block 71 and extending in the vertical direction, and a connecting nut 73 threadedly connected to the connecting shaft 72. The articulated seat 8 is sleeved on the connecting shaft 72 and locked by the connecting nut 73. The support bar 611 is provided with a sliding sleeve 613 that moves along its length. When the support bar 611 is rotated upward 90 degrees to a vertical state, the sliding sleeve 613 slides downward and sleeves on the upper end of the connecting shaft 72 to achieve position limiting. Furthermore, a positioning block 614 is provided on the support bar 611, and a positioning shaft 615 is provided on the sliding sleeve 613, which extends along the sliding direction of the sliding sleeve 613 and passes through the positioning block 614. The positioning shaft 615 is provided with a second compression spring 616 whose two ends are in contact between the positioning block 614 and the sliding sleeve 613, and the hinge seat 8 is provided with a limit seat 81 for limiting the support bar 611 from rotating downward to a horizontal state.

[0034] like Figure 2 and Figure 3 As shown, anti-overflow plates 9 are provided on the three connecting mechanisms 7 located in the middle. A connecting sleeve 91 is provided on the rear side of the anti-overflow plate 9, which is sleeved on the connecting shaft 72 and locked by a connecting nut 73. The lower end of the anti-overflow plate 9 is in contact with the side of the support beam 3 close to the surface layer input, and the upper end of the anti-overflow plate 9 extends upwardly toward the surface layer output side. The blanking die head of the extruder corresponds to the anti-overflow plate 9 to prevent the extruded molten PVC material from overflowing onto the support beam 3.

[0035] Implementation effect: While the surface layer of the PVC composite carpet is placed on the support platform 2 during the transportation process, the molten PVC material enters the surface layer through the blanking die of the extruder. When the PVC material collapses and flows, it is blocked by the limit baffles 64 on both sides. After the PVC material is spread and scraped flat by the scraper 5, a PVC bottom layer of PVC material of the required thickness is formed on the surface layer; and in the process of the lifting cylinder 4 driving the support beam 3 to rise and fall, the scraper 5 can be driven to rise and fall to adjust the thickness of the PVC bottom layer formed by the PVC material. At this time, the limit baffle 64 can ensure that it is always in contact with the surface layer under the adjustment of the elastic connection component 65; at the same time, by adjusting the position of the sliding seat 62 on the slide rod component 61, the width of the formed PCV bottom layer can be adjusted.

[0036] The elastic connection assembly 65 includes a guide shaft 651, an anti-slip nut 652, and a first compression spring 653. The elastic force of the first compression spring 653 and the weight of the stopper 64 keep the stopper 64 elastically pressed against the surface layer during the lifting and lowering of the support beam 3. By providing multiple connection mechanisms 7, the spacing between two support bars 611 of the same slide bar assembly 61 can be an integer multiple of the spacing between two adjacent connection mechanisms 7. This allows for adjustment of the installation position of the slide bar assembly 61 and further expands the adjustment range of the stopper 64. During use, it is necessary to regularly clean adhered PVC material. The lifting cylinder 4 drives the support beam 3 upward, thereby driving the scraper 5 upward. This facilitates scraping PVC material adhered to the scraper 5. By rotating the support bar 611 of the slide bar assembly 61 upward 90 degrees to a vertical position, the sliding sleeve 613 slides downward and fits over the upper end of the connecting shaft 72 to achieve a fixed position. This positions the stopper 64 in a vertical position, facilitating scraping of adhered PVC material. The sliding sleeve 613 is squeezed by the second compression spring 616, so that when the sliding sleeve 613 is buckled on the upper end of the connecting shaft 72, the connection stability can be increased; at the same time, the setting of the limit seat 81 can limit the support bar 611 to stop rotating when it rotates downward to a horizontal state, so as to ensure that the limit baffle 64 is raised and lowered in the vertical direction.

[0037] When the molten PVC material falls from the blanking die of the extruder, the anti-overflow plate 9 can be set to prevent the PVC material from overflowing toward the surface layer output side. At the same time, the anti-overflow plate 9 can be installed on multiple connecting mechanisms 7 and is also convenient for disassembly and assembly.

[0038] Example 2: A thickness adjustment device for PVC materials used in carpet processing, such as Figure 6As shown, the difference from Example 1 is that: an air cooling mechanism is provided on the lower surface of the support platform 2 near the surface layer output side, the air cooling mechanism includes an exhaust fan 101 arranged on the frame 1, a cooling air duct 102 connected to the support platform 2 near the surface layer output side, an air outlet duct 103 connected between the air outlet end of the exhaust fan 101 and the cooling air duct 102, and a plurality of cooling air nozzles 104 arranged around the cooling air duct 102 and facing the surface layer.

[0039] At the same time, a negative pressure chamber 21 is provided on the lower surface of the support platform 2, and negative pressure holes 22 distributed in an array are provided in the middle of the support platform 2. A negative pressure pipe 105 is provided on the negative pressure chamber 21, and a three-way valve 106 is provided at the air inlet end of the exhaust fan 101. The negative pressure pipe 105 is connected to one of the joints of the three-way valve 106, and the negative pressure holes 22 are distributed on the side of the support beam 3 close to the surface layer input direction.

[0040] Implementation effect: The setting of the exhaust fan 101, the cooling air duct 102, the air outlet duct 103 and the cooling air nozzle 104 can realize cooling and lowering the temperature on the output side of the surface layer, thereby improving the molding speed of the PVC bottom layer. By setting the three-way valve 106, the exhaust fan 101 can be used to extract air from the negative pressure chamber 21. At this time, through the setting of the negative pressure hole 22, the surface layer can be more closely attached to the support platform 2, making it less likely for the surface layer to warp up due to wrinkles during the transmission process, thereby improving the thickness uniformity of the PVC bottom layer.

Claims

1. A thickness adjustment device for PVC materials used in carpet processing, characterized by: The invention comprises a frame (1), a support platform (2) arranged on the frame (1) and supporting the lower surface of the surface layer being transported, a support beam (3) arranged above the support platform (2), a lifting cylinder (4) arranged between the two ends of the support beam (3) and the frame (1), a scraper (5) arranged on the lower surface of the support beam (3) and realizing spreading and leveling of the PVC material, and two limiting mechanisms (6) arranged at the two ends of the support beam (3) and limiting the spreading width of the PVC on the surface layer. The blanking die head of the extruder corresponds to the side of the support beam (3) close to the surface layer input so as to realize direct delivery of the molten PVC material to the surface layer; the limiting mechanism (6) comprises The invention comprises a slide bar assembly (61) arranged at the end of the support beam (3) and facing the input direction of the surface layer, a slide seat (62) slidably arranged on the slide bar assembly (61), a locking knob bolt (63) threadedly connected to the slide seat (62) and used to press against the slide bar assembly (61), a limit baffle (64) arranged on the slide seat (62) and extending toward the input direction of the surface layer, and an elastic connection assembly (65) arranged between the slide seat (62) and the limit baffle (64) and allowing the limit baffle (64) to elastically press against the surface layer during the lifting process of the support beam (3), wherein the limit baffle (64) and the scraper (5) are in conflict; The slide bar assembly (61) includes two support bars (611), an optical axis (612) arranged between the two support bars (611), and the sliding seat (62) is slidably connected to the two optical axes (612); the elastic connection assembly (65) includes two guide shafts (651) arranged on the limit baffle (64) and passing through the sliding seat (62) in the vertical direction, an anti-slip nut (652) threadedly connected to the upper end of the guide shaft (651), and a first compression spring (653) sleeved on the guide shaft (651) and with both ends pressed between the limit baffle (64) and the sliding seat (62); A plurality of connection mechanisms (7) for mounting support bars (611) are arranged on the upper surface of the support beam (3); the spacing between two support bars (611) of the same slide bar assembly (61) is an integer multiple of the spacing between two adjacent connection mechanisms (7); and the ends of the support bars (611) are rotatably connected to the connection mechanisms (7); The end of the support bar (611) is hingedly provided with an articulated seat (8), the connecting mechanism (7) comprises a connecting block (71) provided on the upper surface of the support beam (3), a connecting shaft (72) provided on the connecting block (71) and extending in the vertical direction, and a connecting nut (73) threadedly connected to the connecting shaft (72), the articulated seat (8) is sleeved on the connecting shaft (72) and locked by the connecting nut (73), the support bar (611) is provided with a sliding sleeve (613) that moves along its length direction, and when the support bar (611) is rotated upward by 90 degrees to a vertical state, the sliding sleeve (613) slides downward and sleeves on the upper end of the connecting shaft (72) to achieve position limiting; The support bar (611) is provided with a positioning block (614), the sliding sleeve (613) is provided with a positioning shaft (615) extending along the sliding direction of the sliding sleeve (613) and passing through the positioning block (614), the positioning shaft (615) is provided with a second compression spring (616) with both ends abutting between the positioning block (614) and the sliding sleeve (613), and the hinge seat (8) is provided with a limit seat (81) for limiting the support bar (611) from rotating downward to a horizontal state.

2. The thickness adjustment device for PVC materials used in carpet processing according to claim 1, characterized in that: The three connecting mechanisms (7) located in the middle are provided with anti-overflow plates (9), and the rear side of the anti-overflow plates (9) is provided with a connecting sleeve (91) which is sleeved on the connecting shaft (72) and locked by a connecting nut (73). The lower end of the anti-overflow plate (9) abuts against the side of the support beam (3) close to the surface layer input, and the upper end of the anti-overflow plate (9) extends upwardly and obliquely toward the surface layer output side. The blanking die head of the extruder corresponds to the anti-overflow plate (9) to prevent the extruded molten PVC material from overflowing onto the support beam (3).

3. The thickness adjustment device for PVC materials used in carpet processing according to claim 1, characterized in that: An air cooling mechanism is provided on the lower surface of the support platform (2) near the surface layer output side, the air cooling mechanism comprising an exhaust fan (101) provided on the frame (1), a cooling air duct (102) connected to the support platform (2) near the surface layer output side, an air outlet duct (103) connected between the air outlet end of the exhaust fan (101) and the cooling air duct (102), and a plurality of cooling air nozzles (104) arranged around the cooling air duct (102) and facing the surface layer.

4. The thickness adjustment device for PVC materials used in carpet processing according to claim 3, characterized in that: A negative pressure chamber (21) is provided on the lower surface of the support platform (2), and negative pressure holes (22) distributed in an array are provided in the middle of the support platform (2). A negative pressure pipe (105) is provided on the negative pressure chamber (21), and a three-way valve (106) is provided at the air inlet end of the exhaust fan (101). The negative pressure pipe (105) is connected to one of the joints of the three-way valve (106), and the negative pressure holes (22) are distributed on the side of the support beam (3) close to the input direction of the surface layer.

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