Blank pressing device and process for wide low-temperature impact-resistant and bending-resistant PVC (polyvinyl chloride) co-extrusion foamed plate

Abstract

The invention relates to the technical field of foamed sheet blank pressing devices, in particular to a wide low-temperature impact-resistant bending-resistant PVC co-extrusion foamed sheet blank pressing device and process. The wide low-temperature impact-resistant bending-resistant PVC co-extrusion foamed sheet blank pressing device comprises a machine body, air cylinders are fixedly connected to the two sides of the machine body, and a driving motor is fixedly connected to the upper surface of the machine body; a proportion control mechanism capable of adjusting the transmission ratio is rotationally connected into the machine body, a clutch adjusting mechanism is arranged in the machine body, an arc-shaped extrusion mechanism with an adjustable arc edge is fixedly connected into the machine body, and hot cutting deformation mechanisms used for edge pressing are slidably connected to the two sides of the inner side of the machine body. According to the foaming plate edge pressing device, the heating rod and the heat conduction steel wire in the sliding groove are driven by the air cylinder to slide downwards in the machine body, the shape of the heat conduction steel wire can be changed when the two pairs of arc-shaped extrusion blocks and the first arc-shaped extrusion block extrude each other, and wave-shaped edge pressing and straight edge switching is conducted on a foaming plate.

Description

Technical Field

[0001] The invention relates to the technical field of edge pressing devices for foamed boards, and in particular to an edge pressing device and process for a wide, low-temperature, impact-resistant and bending-resistant PVC co-extruded foamed board. Background Art

[0002] Low-temperature impact-resistant and bend-resistant PVC co-extruded foamed sheet is a new type of building material with excellent performance. It uses polyvinyl chloride resin as the main raw material, adds a variety of additives such as foaming agent, plasticizer, stabilizer, filler, etc., and is made through a special co-extrusion foaming process. This sheet has many significant characteristics. First of all, the wide-width design enables it to meet the needs of large-area construction, reduce splicing, and improve construction efficiency and aesthetics. For example, in the decoration of the exterior walls of large buildings, it can present a smoother and continuous decorative effect. Secondly, it has excellent low-temperature impact resistance. By optimizing the formula and processing technology, it can still maintain good flexibility and toughness in low-temperature environments.

[0003] In the prior art, the edge pressing of foamed boards is generally performed linearly by machinery. Compared with the prior art, it is difficult to have a better solution for different edge pressing shapes. For example, the requirements for straight edges and wavy edges are different, so different treatments are required. Changing the process will be extremely cumbersome. Therefore, a wide-width, low-temperature, impact-resistant and bending-resistant PVC co-extruded foamed board edge pressing device is needed. Summary of the invention

[0004] The purpose of the present invention is to provide a wide-width low-temperature impact-resistant and bend-resistant PVC co-extruded foamed board edge pressing device and process to solve the problems raised in the above background technology. To achieve the above purpose, the present invention provides the following technical solutions: a wide-width low-temperature impact-resistant and bend-resistant PVC co-extruded foamed board edge pressing device, comprising a body, both sides of the body are fixedly connected to a cylinder, and the upper surface of the body is fixedly connected to a driving motor; The body is internally rotatably connected with a proportional control mechanism with an adjustable transmission ratio, the body is internally provided with a clutch adjustment mechanism, the body is internally fixedly connected with an arc extrusion mechanism with an adjustable arc edge, and the body is slidably connected with hot cutting deformation mechanisms for edge pressing on both sides of the inner side.

[0005] Preferably, the proportional control mechanism includes an eccentric wheel. The center of the upper surface of the eccentric wheel is fixedly connected to the output shaft of the driving motor. One end of the bottom of the eccentric wheel is rotatably connected to a connecting rod. The upper surface of one end of the connecting rod is rotatably connected to the upper end inside the machine body. The lower surface of one end of the connecting rod is rotatably connected to a push rod. The lower end of the push rod is rotatably connected to an adjusting rod. The upper end inside the machine body is fixedly connected with an arc-shaped groove. A sliding rod is slidably connected inside the arc-shaped groove. The surface of the sliding rod is rotatably connected to one end of the adjusting rod. A threaded groove is formed at the upper end of the sliding rod, and a threaded rod is threadedly connected inside the threaded groove. One end of the threaded rod is rotatably connected to an L-shaped support frame.

[0006] Preferably, the clutch adjusting mechanism includes a fixing plate which is fixedly connected inside the machine body. A rotating rod is rotatably connected to the inner side of the machine body. One end of the rotating rod is fixedly connected to a knob. A numerical horizontal groove sleeve is rotatably connected to the surface of the knob and is also rotatably connected to the side surface of the machine body. A first gear disk is fixedly connected to the surface of the rotating rod. A second gear disk is fixedly connected to one end of the threaded rod. The bottom of the L-shaped support frame is rotatably connected to the surface of the fixing plate. The first gear disk and the second gear disk are in a meshing state. A first bevel gear is fixedly connected to the other end of the rotating rod. A spline telescopic rod is rotatably connected to the surface of the fixing plate. A second bevel gear is fixedly connected to the upper end of the spline telescopic rod. A telescopic sleeve is fixedly connected to the lower surface of the fixing plate.

[0007] Preferably, a spring retaining ring is fixedly connected to the lower end of the spline telescopic rod. A telescopic rod is fixedly connected to the lower surface of the fixing plate. A fixing groove is fixedly connected to the lower end of the telescopic rod. Oblique grooves are formed on both sides of the surface of the telescopic sleeve. The spring retaining ring is inside the oblique grooves. A first engaging tooth is fixedly connected to the lower end of the telescopic sleeve. A second engaging tooth is rotatably connected inside the fixing groove. A transmission belt is connected between the first engaging tooth and the second engaging tooth for transmission.

[0008] Preferably, the arc-shaped extrusion mechanism includes a sliding plate which is slidably connected inside the machine body. One end of the sliding plate is hinged to the push rod. A cross plate is fixedly connected inside the machine body. A plurality of groups of rotating wheels are rotatably connected to the surfaces of the sliding plate and the cross plate, and are arranged alternately between the sliding plate and the cross plate. An arc-shaped groove is formed on the surface of the rotating wheel. A third engaging tooth is fixedly connected to the surface of one side of the rotating wheels.

[0009] Preferably, a limiting slide rail is fixedly connected to the surface of the sliding plate, a bidirectional telescopic rod is fixedly connected to the lower surface of the sliding plate, the telescopic ends of the bidirectional telescopic rod are fixedly connected with arc-shaped extrusion blocks, an L-shaped sliding rod is slidably connected inside the arc-shaped extrusion blocks, the surface of the L-shaped sliding rod is slidably connected with an arc-shaped extrusion block one, the L-shaped sliding rod passes through the arc-shaped extrusion block and the arc-shaped extrusion block one at the same time, the arc-shaped extrusion block and the arc-shaped extrusion block one are clamped on the same axis, the L-shaped sliding rod passes through the limiting slide rail and the inside of the arc groove, and is slidably connected inside the limiting slide rail and the arc groove.

[0010] Preferably, the hot forming mechanism includes a sliding groove, the sliding groove is slidably connected to both sides of the machine body, one end of the sliding groove is fixedly connected to the telescopic end of the air cylinder, an inclined notch is fixedly connected to the lower end of the sliding plate, a heating rod is slidably connected inside the sliding groove, the heating rods are symmetrically arranged inside the machine body, and a heat conducting steel wire is fixedly connected between the two heating rods.

[0011] The process of the edge pressing device for wide-width low-temperature impact-resistant and bend-resistant PVC co-extruded foamed plates includes the following steps: S1. First, after the clutch adjustment mechanism makes the first tooth and the second tooth mesh with the third tooth, the third tooth is driven to rotate by the knob, so that the arc-shaped extrusion block and the first arc-shaped extrusion block are deformed, so as to adjust the arc of the hot forming mechanism; S2. When the knob rotates, it will also drive the proportional control mechanism to work, changing the distance when the arc-shaped extrusion block and the first arc-shaped extrusion block are relatively extruded, so as to ensure the accuracy of the arc; S3. The arc is determined by the rotation distance of the numerical horizontal groove sleeve driven by the knob. When the sliding plate moves, it drives the inclined notch to move. The inclined notch drives the heating rod in the sliding groove. The heating rod is extruded by the inclined notch, so that the heating rod slides in the sliding groove. In this way, when the heat conducting steel wire is extruded, the two heating rods will slide inward, ensuring the stability of the heat conducting steel wire when it is extruded.

[0012] In the present invention, the heating rod and the heat conducting steel wire in the sliding groove are driven by the air cylinder to slide downward inside the machine body. When the two pairs of arc-shaped extrusion blocks and the first arc-shaped extrusion blocks are mutually extruded, the shape of the heat conducting steel wire can be changed, and the switching between the wavy edge pressing and the straight edge of the foamed plate can be realized.

[0013] In the present invention, when the knob rotates, it will also drive the proportional control mechanism to work, changing the distance when the arc-shaped extrusion block and the first arc-shaped extrusion block are relatively extruded, so as to ensure the accuracy of the arc.

[0014] In the present invention, the inclined notch drives the heating rod in the sliding groove. The heating rod is extruded by the inclined notch, so that the heating rod slides in the sliding groove. In this way, when the heat conducting steel wire is extruded, the two heating rods will slide inward, ensuring the stability of the heat conducting steel wire when it is extruded. Description of the Drawings

[0015] Figure 1 It is a schematic diagram of the three-dimensional appearance of the present invention; Figure 2 It is a schematic diagram of the side cross-sectional structure of the present invention; Figure 3 It is a schematic diagram of the internal structure of the machine body of the present invention; Figure 4 It is a schematic diagram of the cylinder and other structures of the present invention; Figure 5 It is a structural schematic diagram of the proportional control mechanism of the present invention; Figure 6 It is a schematic diagram of the structure of the clutch adjustment mechanism of the present invention; Figure 7 It is a schematic diagram of the partial structure of the clutch adjustment mechanism of the present invention; Figure 8 It is a schematic diagram of the telescopic sleeve and other structures of the present invention; Figure 9 It is a schematic diagram of the knob and other enlarged structures of the present invention; Figure 10 This is a bottom view of the structure of the fixing groove of the present invention; Figure 11 It is a schematic diagram of the structure of the arc extrusion mechanism of the present invention; Figure 12 It is a partially enlarged structural schematic diagram of the arc-shaped extrusion mechanism of the present invention; Figure 13 It is a schematic diagram of the sliding groove and other structures of the present invention; Figure 14 It is a schematic diagram of the arc-shaped extrusion block and other enlarged structures of the present invention.

[0016] In the figure: 1, body; 2, cylinder; 3, drive motor; 4, proportional control mechanism; 5, clutch adjustment mechanism; 6, arc extrusion mechanism; 7, hot shear deformation mechanism; 41, eccentric wheel; 42, connecting rod; 43, push rod; 44, adjustment rod; 45, arc groove; 46, sliding rod; 47, threaded rod; 48, L-shaped support frame; 51, fixing plate; 52, rotating rod; 53, knob; 54, toothed disc 1; 55, toothed disc 2; 56, bevel gear 1; 57, spline telescopic rod; 58, bevel gear 2; 59, Telescopic sleeve; 510, spring clamp; 511, telescopic rod; 512, oblique groove; 513, tooth one; 514, fixed groove; 515, tooth two; 516, transmission belt; 517, numerical cross groove sleeve; 61, sliding plate; 62, cross plate; 63, rotating wheel; 64, arc groove; 65, tooth three; 66, limit slide rail; 67, two-way telescopic rod; 68, arc extrusion block; 69, arc extrusion block one; 610, L-shaped sliding rod; 71, sliding groove; 72, oblique groove mouth; 73, heating rod; 74, thermal conductive wire. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technical personnel in this field without creative work are within the scope of protection of the present invention.

[0018] See also Figures 1 to 14 The present invention provides a technical solution: a wide-width low-temperature impact-resistant and bending-resistant PVC co-extruded foamed board edge pressing device, comprising a body 1, cylinders 2 are fixedly connected to both sides of the body 1, and a driving motor 3 is fixedly connected to the upper surface of the body 1; The body 1 is internally rotatably connected with a proportional control mechanism 4 with an adjustable transmission ratio, the body 1 is internally provided with a clutch adjustment mechanism 5, the body 1 is internally fixedly connected with an arc extrusion mechanism 6 with an adjustable arc edge, and the inner sides of the body 1 are slidably connected with hot cutting deformation mechanisms 7 for pressing the edges.

[0019] The proportional control mechanism 4 includes an eccentric wheel 41, the center of the upper surface of the eccentric wheel 41 is fixedly connected to the output shaft of the driving motor 3, the bottom of the eccentric wheel 41 is rotatably connected to a connecting rod 42, the upper surface of one end of the connecting rod 42 is rotatably connected to the internal upper end of the body 1, the lower surface of one end of the connecting rod 42 is rotatably connected to a pushing rod 43, the lower end of the pushing rod 43 is rotatably connected to an adjusting rod 44, an arc groove 45 is fixedly connected to the internal upper end of the body 1, a sliding rod 46 is slidably connected inside the arc groove 45, the surface of the sliding rod 46 is rotatably connected to one end of the adjusting rod 44, a threaded groove is provided at the upper end of the sliding rod 46, and a threaded rod 47 is threadedly connected inside the threaded groove, and one end of the threaded rod 47 is rotatably connected to an L-shaped support frame 48.

[0020] The clutch adjustment mechanism 5 includes a fixed plate 51, which is fixedly connected to the inside of the body 1. A rotating rod 52 is rotatably connected to the inner side of the body 1. A knob 53 is fixedly connected to one end of the rotating rod 52. A numerical transverse groove sleeve 517 is rotatably connected to the surface of the knob 53. The numerical transverse groove sleeve 517 is rotatably connected to the side of the body 1 at the same time. A toothed disc 1 54 is fixedly connected to the surface of the rotating rod 52. A toothed disc 2 55 is fixedly connected to one end of the threaded rod 47. The bottom of the L-shaped support frame 48 is rotatably connected to the surface of the fixed plate 51. The toothed disc 1 54 and the toothed disc 2 55 are in meshing state. The other end of the rotating rod 52 is fixedly connected to a bevel gear 1 56. The surface of the fixed plate 51 is rotatably connected to a spline telescopic rod 57. The upper end of the spline telescopic rod 57 is fixedly connected to a bevel gear 2 58. The lower surface of the fixed plate 51 is fixedly connected to a telescopic sleeve 59.

[0021] The lower end of the spline telescopic rod 57 is fixedly connected with a spring retaining ring 510, the lower surface of the fixed plate 51 is fixedly connected with a telescopic rod 511, the lower end of the telescopic rod 511 is fixedly connected with a fixed groove 514, oblique grooves 512 are provided on both sides of the surface of the telescopic sleeve 59, the spring retaining ring 510 is inside the oblique groove 512, the lower end of the telescopic sleeve 59 is fixedly connected with a tooth 1 513, the inside of the fixed groove 514 is rotatably connected with a tooth 2 515, and a transmission belt 516 is connected between the tooth 1 513 and the tooth 2 515.

[0022] The arc extrusion mechanism 6 includes a sliding plate 61, which is slidably connected inside the body 1. One end of the sliding plate 61 is hinged to the push rod 43. A transverse plate 62 is fixedly connected to the inside of the body 1. The surfaces of the sliding plate 61 and the transverse plate 62 are rotatably connected with a rotating wheel 63. There are several groups of rotating wheels 63, which are staggered between the sliding plate 61 and the transverse plate 62. An arc groove 64 is opened on the surface of the rotating wheel 63. The surface of the rotating wheel 63 on one side is fixedly connected with a latch tooth three 65. The heating rod 73 and the heat-conducting steel wire 74 in the sliding groove 71 are driven by the air cylinder 2 to slide downward inside the body 1. When the two pairs of arc extrusion blocks 68 and the arc extrusion block one 69 are squeezed against each other, the shape of the heat-conducting steel wire 74 can be changed, so that the foaming plate can be switched between a wavy pressing edge and a straight edge.

[0023] The surface of the sliding plate 61 is fixedly connected to the limited slide rail 66, and the lower surface of the sliding plate 61 is fixedly connected to the two-way telescopic rod 67. The telescopic ends of the two-way telescopic rod 67 are fixedly connected to the arc extrusion block 68. The inside of the arc extrusion block 68 is slidably connected to the L-shaped slide bar 610. The surface of the L-shaped slide bar 610 is slidably connected to the arc extrusion block 1 69. The L-shaped slide bar 610 passes through the arc extrusion block 68 and the arc extrusion block 1 69 at the same time, and the arc extrusion block 68 and the arc extrusion block 1 69 are clamped on the same axis. The L-shaped slide bar 610 passes through the inside of the limited slide rail 66 and the arc groove 64, and is slidably connected inside the limited slide rail 66 and the arc groove 64. The hot-cut deformation mechanism 7 includes a sliding groove 71, which is slidably connected on both sides of the body 1, one end of the sliding groove 71 is fixedly connected to the telescopic end of the cylinder 2, the lower end of the sliding plate 61 is fixedly connected with an oblique groove 72, the interior of the sliding groove 71 is slidably connected with a heating rod 73, the heating rod 73 is symmetrically arranged in the body 1, and a heat-conducting steel wire 74 is fixedly connected between the two heating rods 73, the heating rod 73 is driven in the sliding groove 71 through the oblique groove 72, and the heating rod 73 is squeezed through the oblique groove 72, so that the heating rod 73 slides in the sliding groove 71, so that when the heat-conducting steel wire 74 is squeezed, the two heating rods 73 will slide inwards, thereby ensuring the stability of the heat-conducting steel wire 74 when it is squeezed again.

[0024] like Figures 1 to 14 As shown; The process of the edge pressing device for wide-width low-temperature impact-resistant and bend-resistant PVC co-extruded foamed plates includes the following steps: S1. When the foamed plate needs to be straight-edge pressed, the heating rod 73 and the heat-conducting steel wire 74 in the sliding groove 71 can be directly driven by the cylinder 2 to slide downward inside the machine body 1 to perform straight-edge pressing on the edge of the foamed plate. When the foamed plate needs to be wave-edge pressed, first twist the knob 53. The knob 53 rotates inside the numerical horizontal groove sleeve 517, so that the numerical horizontal groove sleeve 517 will rotate with a time delay to ensure the accuracy of the numerical value. And when the knob 53 rotates, it drives the rotating rod 52 to rotate. When the rotating rod 52 rotates, it drives the first bevel gear 56 to rotate. When the first bevel gear 56 rotates, it drives the second bevel gear 58 to rotate. When the second bevel gear 58 rotates, it drives the spline telescopic rod 57 to rotate. The spline telescopic rod 57 drives the spring snap ring 510 to rotate in the inclined groove 512 opened inside the telescopic sleeve 59. The spring snap ring 510 rotates along the inclined surface of the inclined groove 512 and squeezes the telescopic sleeve 59 to extend downward. When the telescopic sleeve 59 extends downward, it drives the first engaging tooth 513 and the fixed groove 514 at the lower end to slide downward. And the fixed groove 514 slides downward through the telescopic rod 511, and at the same time drives the second engaging tooth 515 downward; S2. When the first engaging tooth 513 and the second engaging tooth 515 move downward, they will engage with the first tooth disc 54 and the two third engaging teeth 65. At this time, the spring snap ring 510 will continue to rotate and get stuck at the edge of the inclined groove 512, and at the same time drive the telescopic sleeve 59 to continue rotating. The telescopic sleeve 59 drives the first engaging tooth 513 to rotate. The first engaging tooth 513 drives the second engaging tooth 515 to rotate through the transmission belt 516. When the first engaging tooth 513 and the second engaging tooth 515 rotate, they drive the two third engaging teeth 65 to rotate. When the third engaging tooth 65 rotates, it drives the runner 63 to rotate. When the runner 63 rotates, the arc groove 64 rotates. When the arc groove 64 rotates, it will squeeze the upper end of the L-shaped sliding rod 610 to slide along the limit sliding rail 66. The lower end of the L-shaped sliding rod 610 drives the arc-shaped extrusion block 68 to expand left and right. And the arc-shaped extrusion block 68 moves through the double telescopic rod 67, and at the same time drives the arc-shaped extrusion block 69 to slide on the surface of the arc-shaped extrusion block 68 and slide along the radian of the arc-shaped extrusion block 68, so that the diameter of the semi-circle formed by the entire arc-shaped extrusion block 68 and the arc-shaped extrusion block 69 becomes larger, changing the radian at the front end of the arc-shaped extrusion block 68 and the arc-shaped extrusion block 69. The staggered radians of the arc-shaped extrusion block 68 and the arc-shaped extrusion block 69 will also change. In this way, when the two pairs of arc-shaped extrusion blocks 68 and the arc-shaped extrusion block 69 squeeze each other, the shape of the heat-conducting steel wire 74 can be changed to perform wave-shaped edge pressing on the foamed plate; S3. Meanwhile, when the rotating rod 52 rotates, it will drive the first gear disk 54 to rotate. When the first gear disk 54 rotates, it drives the second gear disk 55 to rotate. When the second gear disk 55 rotates, it drives the threaded rod 47 to rotate. When the threaded rod 47 rotates, it drives the sliding rod 46 threadedly connected thereto to move towards the second gear disk 55. The sliding rod 46 slides inside the arc-shaped groove 45, and while sliding, it will also drive the L-shaped support frame 48 of the second gear disk 55 to rotate on the surface of the fixing plate 51. When the sliding rod 46 slides, it drives the adjusting rod 44 to move. When the adjusting rod 44 moves, it will limit the distance that the eccentric wheel 41 drives the connecting rod 42 to rotate. The drive motor 3 drives the eccentric wheel 41 to rotate. When the eccentric wheel 41 rotates, it drives the connecting rod 42 to pull the push rod 43. The push rod 43 will simultaneously pull the sliding plate 61 to slide inside the machine body 1, driving the arc-shaped extrusion block 68 and the first arc-shaped extrusion block 69 to relatively extrude the staggered arc-shaped extrusion block 68 and the first arc-shaped extrusion block 69 against the heat-conducting wire 74. The radian of the heat-conducting wire 74 is determined by the rotation distance of the knob 53 driving the numerical horizontal groove sleeve 517. When the sliding plate 61 moves, it drives the inclined slot 72 to move. The inclined slot 72 drives the heating rod 73 in the sliding slot 71. By squeezing the heating rod 73 through the inclined slot 72, the heating rod 73 slides in the sliding slot 71. In this way, when the heat-conducting wire 74 is extruded, the two heating rods 73 will slide inward, ensuring the stability of the heat-conducting wire 74 when it is extruded.

[0025] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art of this industry should understand that the present invention is not limited by the above embodiments. The above embodiments and the descriptions in the specification are only preferred examples of the present invention and are not used to limit the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of protection claimed by the present invention is defined by the appended claims and their equivalents.

Claims

1. A wide-width, low-temperature, impact-resistant and bending-resistant PVC co-extruded foamed board edge pressing device, comprising a body (1), cylinders (2) are fixedly connected to both sides of the body (1), and a driving motor (3) is fixedly connected to the upper surface of the body (1); Features: The body (1) is internally rotatably connected to a proportional control mechanism (4) with an adjustable transmission ratio, the body (1) is internally provided with a clutch adjustment mechanism (5), the body (1) is internally fixedly connected to an arc-shaped extrusion mechanism (6) with an adjustable arc edge, and the body (1) is internally slidably connected to hot-cut deformation mechanisms (7) for edge pressing.

2. The edge pressing device for a wide, low-temperature, impact-resistant and bending-resistant PVC co-extruded foamed board according to claim 1 is characterized in that: The proportional control mechanism (4) comprises an eccentric wheel (41), the center of the upper surface of the eccentric wheel (41) is fixedly connected to the output shaft of the drive motor (3), the bottom of the eccentric wheel (41) is rotatably connected to a connecting rod (42), the upper surface of one end of the connecting rod (42) is rotatably connected to the internal upper end of the body (1), the lower surface of one end of the connecting rod (42) is rotatably connected to a push rod (43), the lower end of the push rod (43) is rotatably connected to an adjustment rod (44), the internal upper end of the body (1) is fixedly connected to an arc groove (45), the interior of the arc groove (45) is slidably connected to a sliding rod (46), the surface of the sliding rod (46) is rotatably connected to one end of the adjustment rod (44), the upper end of the sliding rod (46) is provided with a threaded groove, and the interior of the threaded groove is threadedly connected to a threaded rod (47), and one end of the threaded rod (47) is rotatably connected to an L-shaped support frame (48).

3. The edge pressing device for a wide, low-temperature, impact-resistant and bending-resistant PVC co-extruded foamed board according to claim 2 is characterized in that: The clutch adjustment mechanism (5) comprises a fixed plate (51), the fixed plate (51) being fixedly connected to the inside of the machine body (1), the inner side of the machine body (1) being rotatably connected to a rotating rod (52), one end of the rotating rod (52) being fixedly connected to a knob (53), the surface of the knob (53) being rotatably connected to a numerical transverse groove sleeve (517), the numerical transverse groove sleeve (517) being rotatably connected to the side of the machine body (1), the surface of the rotating rod (52) being fixedly connected to a toothed disc (54), the threaded rod (4 One end of the rotating rod (52) is fixedly connected to a toothed disc 2 (55), the bottom of the L-shaped support frame (48) is rotatably connected to the surface of the fixed plate (51), the toothed disc 1 (54) and the toothed disc 2 (55) are in a meshing state, the other end of the rotating rod (52) is fixedly connected to a bevel gear 1 (56), the surface of the fixed plate (51) is rotatably connected to a spline telescopic rod (57), the upper end of the spline telescopic rod (57) is fixedly connected to a bevel gear 2 (58), and the lower surface of the fixed plate (51) is fixedly connected to a telescopic sleeve (59).

4. The edge pressing device for a wide, low-temperature, impact-resistant and bending-resistant PVC co-extruded foamed board according to claim 3 is characterized in that: The lower end of the spline telescopic rod (57) is fixedly connected to a spring retaining ring (510), the lower surface of the fixed plate (51) is fixedly connected to a telescopic rod (511), the lower end of the telescopic rod (511) is fixedly connected to a fixing groove (514), oblique grooves (512) are provided on both sides of the surface of the telescopic sleeve (59), the spring retaining ring (510) is inside the oblique groove (512), the lower end of the telescopic sleeve (59) is fixedly connected to a first latch tooth (513), the interior of the fixing groove (514) is rotatably connected to a second latch tooth (515), and a transmission belt (516) is transmission-connected between the first latch tooth (513) and the second latch tooth (515).

5. The edge pressing device for a wide, low-temperature, impact-resistant and bending-resistant PVC co-extruded foamed board according to claim 4 is characterized in that: The arc-shaped extrusion mechanism (6) comprises a sliding plate (61), the sliding plate (61) is slidably connected inside the machine body (1), one end of the sliding plate (61) is hinged to the push rod (43), a transverse plate (62) is fixedly connected inside the machine body (1), the sliding plate (61) and the transverse plate (62) are both rotatably connected to the surface of the rotating wheel (63), a plurality of groups of rotating wheels (63) are arranged, and the sliding plate (61) and the transverse plate (62) are staggered, the surface of the rotating wheel (63) is provided with an arc groove (64), and the surface of the rotating wheel (63) on one side is fixedly connected with a three-grip tooth (65).

6. The edge pressing device for a wide, low-temperature, impact-resistant and bending-resistant PVC co-extruded foamed board according to claim 5 is characterized in that: The surface of the sliding plate (61) is fixedly connected to the limiting slide rail (66), the lower surface of the sliding plate (61) is fixedly connected to a bidirectional telescopic rod (67), the telescopic ends of the bidirectional telescopic rod (67) are fixedly connected to an arc-shaped extrusion block (68), the interior of the arc-shaped extrusion block (68) is slidably connected to an L-shaped sliding rod (610), the surface of the L-shaped sliding rod (610) is slidably connected to an arc-shaped extrusion block 1 (69), the L-shaped sliding rod (610) simultaneously passes through the arc-shaped extrusion block (68) and the arc-shaped extrusion block 1 (69), clamping the arc-shaped extrusion block (68) and the arc-shaped extrusion block 1 (69) on the same axis, the L-shaped sliding rod (610) passes through the inside of the limiting slide rail (66) and the arc groove (64), and is slidably connected inside the limiting slide rail (66) and the arc groove (64).

7. The edge pressing device for a wide, low-temperature, impact-resistant and bending-resistant PVC co-extruded foamed board according to claim 6 is characterized in that: The thermal shear deformation mechanism (7) comprises a sliding groove (71), the sliding groove (71) is slidably connected on both sides of the machine body (1), one end of the sliding groove (71) is fixedly connected to the telescopic end of the cylinder (2), the lower end of the sliding plate (61) is fixedly connected with an oblique groove opening (72), the interior of the sliding groove (71) is slidably connected with a heating rod (73), the heating rod (73) is symmetrically arranged in the machine body (1), and a heat-conducting steel wire (74) is fixedly connected between the two heating rods (73).

8. A process for a wide-width low-temperature impact-resistant and bending-resistant PVC co-extruded foamed board edge pressing device, using the wide-width low-temperature impact-resistant and bending-resistant PVC co-extruded foamed board edge pressing device as described in any one of claims 1 to 7, characterized in that: The steps include: S1. First, the clutch adjustment mechanism (5) is engaged to make the first latch tooth (513) and the second latch tooth (515) mesh with the third latch tooth (65), and then the third latch tooth (65) is driven to rotate by the knob, so that the arc-shaped extrusion block (68) and the first arc-shaped extrusion block (69) are deformed, thereby making the hot-cut deformation mechanism (7) adjust the arc; S2. When the knob (53) is rotated, the proportional control mechanism (4) is also driven to work, changing the distance between the arc extrusion block (68) and the arc extrusion block 1 (69) when they are relatively extruded, thereby ensuring the accuracy of the arc; S3, and the arc is determined by the rotation distance of the numerical transverse groove sleeve (517) driven by the knob (53), and when the sliding plate (61) moves, the inclined groove (72) is driven to move, and the inclined groove (72) drives the heating rod (73) in the sliding groove (71), and squeezes the heating rod (73) through the inclined groove (72), so that the heating rod (73) slides in the sliding groove (71), so that when the heat-conducting steel wire (74) is squeezed, the two heating rods (73) will slide inwardly, ensuring the stability of the heat-conducting steel wire (74) when it is squeezed again.

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