Polyurethane foam winding equipment

Abstract

The utility model provides a polyurethane foam winding device which comprises a main machine body arranged on the ground, a guide roller set, a first traction roller, a traction cutting set, a second traction roller, a winding roller, a first regulation and control set, a second regulation and control set, a second regulation and control set, a third regulation and control set, a fourth regulation and control set and a fifth regulation and control set, wherein the guide roller set, the first traction roller, the traction cutting set, the second traction roller and the winding roller are arranged on the main machine body; the first regulation and control group is arranged on the main machine body, the second regulation and control group is arranged on the main machine body, the balance assembly is arranged on the main machine body and the second regulation and control group, and the polyurethane foam sequentially passes through the guide roller group, the first traction roller, the traction division group, the balance assembly and the second traction roller from right to left and is wound on the winding roller. The overall coordination of all parts during winding of the polyurethane foam is effectively guaranteed, coordinated and smooth winding of the polyurethane foam is guaranteed, and the situation that the quality of the polyurethane foam is affected due to excessive pulling or the production cost rises due to waste products generated due to breakage of the polyurethane foam is effectively avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of polyurethane foam production, in particular to a polyurethane foam winding device. Background Art

[0002] Polyurethane foam, also known as spandex, is an elastic fiber. The raw material of polyurethane foam is polyurethane foam material, which is a high molecular compound with good softness and elasticity. Therefore, polyurethane foam is highly elastic and can be stretched 6 to 7 times, but it can quickly return to its original state as the tension disappears. Its molecular structure is a chain-like, soft and extensible polyurethane, which is enhanced by connecting with hard segments. Elastic fibers are divided into two categories: one is polyester chain and the other is polyether chain. Polyester elastic fibers have strong antioxidant and oil resistance, while polyether elastic fibers have good mildew resistance and detergent resistance.

[0003] After the production of polyurethane foam is completed, the entire sheet of polyurethane foam needs to be divided accordingly according to the customer's specific usage requirements, and the polyurethane foam is also wound simultaneously during the division. However, in the continuous working process, as time accumulates, the mechanical errors of the winding equipment will continue to increase, causing unnecessary changes in the rotation speed of various parts of the winding equipment, causing the overall coordination of various parts of the winding equipment to deviate from the established requirements, which can easily cause the polyurethane foam to be pulled or even broken, thereby affecting the quality of the polyurethane foam or generating waste, resulting in an increase in production costs. Utility Model Content

[0004] The purpose of the utility model is to provide a polyurethane foam winding device to solve the above problems.

[0005] To achieve the above-mentioned object, the utility model provides a polyurethane foam winding device, comprising: a main body arranged on the ground, a guide roller group, a first traction roller, a traction and splitting group, a second traction roller, and a winding roller arranged on the main body, a first regulating group arranged on the main body and the ground, a second regulating group arranged on the main body, a balancing assembly arranged on the main body and the second regulating assembly, and polyurethane foam arranged from right to left in sequence through the guide roller group, the first traction roller, the traction and splitting group, the balancing assembly, and the second traction roller and wound on the winding roller;

[0006] The balancing component is located above the second regulating group;

[0007] The guide roller group and the winding roller are respectively connected to an external power source on the main body;

[0008] The first regulating group and the second regulating group are connected to the external power source of the guide roller group and the winding roller respectively, wherein

[0009] The guide roller group is suitable for conveying the polyurethane foam forward;

[0010] The winding roller is suitable for continuously winding and wrapping the polyurethane foam so as to pull the polyurethane foam forward on the first traction roller, the traction and segmentation group, the balancing assembly and the second traction roller in sequence;

[0011] The first regulating group and the second regulating group are adapted to respectively regulate the rotational speeds of the guide roller group and the winding roller;

[0012] The balancing component is suitable for being pulled by the polyurethane foam and adaptively shaking along with the polyurethane foam.

[0013] Furthermore, the first control group includes a first panel connected to the main body, two legs respectively mounted on both ends of the bottom of the first panel on a side away from the main body, and the two legs are supported on the ground, a first positioning plate centrally mounted on the bottom of the first panel, a first distance sensor mounted on the first positioning plate, and a first through slot provided on the first panel;

[0014] The transmitting end of the first distance sensor is aligned with the first through slot, and the first distance sensor is electrically connected to an external power source of the guide roller group;

[0015] The first table panel is located below the polyurethane foam.

[0016] Furthermore, the balancing assembly includes two mounting members disposed opposite to each other on the inner side wall of the main body, a main body rod rotatably mounted in the two mounting members at both ends, frame plates fixed to both sides of the main body rod by bolts, two rotating rods equidistantly mounted between the two frame plates and located in front of the main body rod, and a tail rod mounted between the two frame plates and located behind the main body rod;

[0017] The two rotating rods are located directly above the second regulating group.

[0018] Furthermore, the balancing assembly further includes slot plates respectively mounted on the two side surfaces of the frame plates and respectively located on both sides of the tail rod, and counterweight blocks respectively detachably mounted in the two slot plates.

[0019] Furthermore, the second control group includes a second panel mounted on the main body, a second positioning plate centrally mounted on the bottom of the second panel, a second distance sensor mounted on the second positioning plate, and a second through slot provided on the second panel;

[0020] The transmitting end of the second distance sensor is aligned with the second through slot, and the second distance sensor is electrically connected to the power source of the winding roller.

[0021] Furthermore, the balancing assembly includes a bottom block arranged on the second table panel, a plurality of bearings installed at equal intervals on the top of the bottom block, a core rod installed on the inner rings of the plurality of bearings, support rods installed at both ends of the core rod, a balancing plate installed on the two support rods, a groove plate installed inverted at the front end of the balancing plate, a plurality of small rollers installed in the groove plate for rotation side by side, and a trapezoidal block installed at the bottom of the front end of the balancing plate;

[0022] The balance board is located directly above the second distance sensor.

[0023] Furthermore, the balancing assembly further includes two universal balls mounted on the balancing plate, hollow rods respectively mounted on the two universal balls, a push rod with one end respectively fitted and slidably inserted into the two hollow rods, and a spring with one end respectively detachably connected to the two push rods;

[0024] The other ends of the two springs are respectively in contact with the inner bottom surfaces of the two hollow rods;

[0025] The other ends of the two push rods are connected to the rear end of the balance board.

[0026] Furthermore, a plurality of the small rollers protrude from the groove plate.

[0027] Compared with the prior art, the present invention has the following beneficial effects:

[0028] The polyurethane foam winding device can reflect the state of the polyurethane foam by monitoring the distance between itself and the polyurethane foam through the first control group, and can synchronously control the conveying speed of the guide roller group to the polyurethane foam according to the distance to the polyurethane foam; through the second control group and with the assistance of the balancing component, it can indirectly reflect the distance between itself and the polyurethane foam at another position, thereby judging the state of the polyurethane foam and adjusting the speed of the winding roller to wind the polyurethane foam, so as to regulate the corresponding mechanical components at the positions of the head and tail of the polyurethane foam in real time, effectively ensuring the overall coordination of various parts when winding the polyurethane foam, ensuring the coordinated and smooth winding of the polyurethane foam, and effectively avoiding the polyurethane foam from being excessively pulled and affecting its quality or the polyurethane foam from breaking and generating waste, which leads to an increase in production costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0030] Figure 1 Shows a perspective view of the present utility model;

[0031] Figure 2 Shows a bottom perspective view of the present invention;

[0032] Figure 3 Shows a partial perspective view of the utility model in another state;

[0033] Figure 4 Shows a first partial front view of the utility model;

[0034] Figure 5 Shows a first partial perspective view of the utility model;

[0035] Figure 6 Shows a second partial perspective view of the present invention;

[0036] Figure 7 Shows a second partial front view of the utility model;

[0037] Figure 8 Shows the utility model Figure 2 A magnified view of point A;

[0038] Figure 9 Shows the utility model Figure 5 Enlarged view of point B;

[0039] Figure 10 Shows the utility model Figure 6 Enlarged view of point C.

[0040] In the figures, the same reference numerals denote the same structural elements, wherein:

[0041] 1. Ground; 2. Machine body; 3. Guide roller group; 4. First traction roller; 5. Traction and splitting group; 6. Second traction roller; 7. Winding roller; 8. First control group; 81. First table panel; 82. Support legs; 83. First positioning plate; 84. First distance sensor; 85. First through slot; 9. Second control group; 91. Second table panel; 92. Second positioning plate; 93. Second distance sensor; 94. Second through slot; 10. Balancing assembly; 101. Mounting part; 102. Main rod; 103. Frame plate; 104. Rotating rod; 105. Tail rod; 106. Slot plate; 107. Counterweight; 11. Polyurethane foam; 12. Bottom block; 13. Bearing; 14. Core rod; 15. Support rod; 16. Balance plate; 17. Groove plate; 18. Small roller; 19. Trapezoidal block; 20. Universal ball; 21. Empty rod; 22. Push rod; 23. Spring. DETAILED DESCRIPTION

[0042] The present invention will now be described in further detail with reference to the accompanying drawings, which are simplified schematic diagrams that illustrate the basic structure of the present invention in a schematic manner. Example 1

[0043] See also Figure 1 , Figure 1 Shows a three-dimensional diagram of the utility model; please refer to Figure 2 , Figure 2 Shows a bottom perspective view of the present invention; see Figure 3 , Figure 3 Shows a partial stereogram of the present invention in another state; please refer to Figure 4 , Figure 4 Shows the first partial front view of the utility model; please refer to Figure 5 , Figure 5 Shows the first partial stereogram of the present invention; see Figure 8 , Figure 8 Shows the utility model Figure 2 See the enlarged view of point A in Figure 9 , Figure 9 Shows the utility model Figure 5 The enlarged view of point B; Figure 1-5, 8, and 9, a polyurethane foam winding device, characterized in that it comprises: a main body 2 arranged on the ground 1, a guide roller group 3, a first traction roller 4, a traction and splitting group 5, a second traction roller 6, and a winding roller 7 arranged on the main body 2, a first regulating group 8 arranged on the main body 2 and the ground 1, a second regulating group 9 arranged on the main body 2, a balancing component 10 arranged on the main body 2 and the second regulating group 9, and a polyurethane foam 11 arranged from right to left in sequence through the guide roller group 3, the first traction roller 4, the traction and splitting group 5, the balancing component 10, and the second traction roller 6 and wound on the winding roller 7;

[0044] The balancing component 10 is located above the second regulating group 9;

[0045] The guide roller group 3 and the winding roller 7 are respectively connected to the external power source on the main body 2;

[0046] The first regulating group 8 and the second regulating group 9 are connected to the external power source of the guide roller group 3 and the winding roller 7 respectively, wherein

[0047] The guide roller group 3 is suitable for conveying the polyurethane foam 11 forward;

[0048] The winding roller 7 is adapted to continuously wind up the polyurethane foam 11 so as to pull the polyurethane foam 11 forward on the first traction roller 4, the traction and segmentation group 5, the balancing assembly 10 and the second traction roller 6 in sequence;

[0049] The first regulating group 8 and the second regulating group 9 are adapted to respectively regulate the rotational speeds of the guide roller group 3 and the winding roller 7;

[0050] The balancing component 10 is suitable for being pulled by the polyurethane foam 11 and adaptively shaking with the polyurethane foam 11. When the polyurethane foam 11 is rolled up, the polyurethane foam 11 formed into a roll and piece is first arranged on the right side of the polyurethane foam rolling device, and then the head end of the polyurethane foam 11 is pulled and arranged on the guide roller group 3, the first traction roller 4, the traction and segmentation group 5, the balancing component 10 and the second traction roller 6 in sequence, and finally the polyurethane foam 11 is wound on the winding roller 7. With the continuous winding of the winding roller 7 and the continuous transmission of the guide roller group 3, the polyurethane foam 11 formed into a roll and piece is gradually pulled apart or the polyurethane foam 11 just produced by the polyurethane foam 11 production equipment is directly pulled; the traction and segmentation group 5 divides the polyurethane foam 11 into corresponding equal parts as required during the process of rolling it up; the polyurethane foam winding device is adjusted by the first The control group 8 can reflect the state of the polyurethane foam 11 by monitoring the distance between itself and the polyurethane foam 11, and can synchronously control the conveying speed of the guide roller group 3 to the polyurethane foam 11 according to the distance from the polyurethane foam 11; through the second control group 9 and with the assistance of the balancing component 10, it can indirectly reflect the distance between itself and the polyurethane foam 11 at another position, thereby judging the state of the polyurethane foam 11 and adjusting the speed of the winding roller 7 to wind the polyurethane foam 11, so as to regulate the corresponding mechanical components at the positions of the head and tail of the polyurethane foam 11 in real time, effectively ensuring the overall coordination of various parts when the polyurethane foam 11 is wound, ensuring the coordinated and smooth winding of the polyurethane foam 11, and effectively avoiding the polyurethane foam 11 from being excessively pulled and affecting its quality or the polyurethane foam 11 from being broken and generating waste, which leads to an increase in production costs;

[0051] The first control group 8 includes a first panel 81 connected to the main body 2, two legs 82 respectively mounted at both ends of the bottom of the first panel 81 away from the main body 2, with the two legs 82 supporting the ground 1, a first positioning plate 83 centrally mounted on the bottom of the first panel 81, a first distance sensor 84 mounted on the first positioning plate 83, and a first through slot 85 defined in the first panel 81;

[0052] The transmitting end of the first distance sensor 84 is aligned with the first through slot 85 , and the first distance sensor 84 is electrically connected to the external power source of the guide roller group 3 ;

[0053] The first panel 81 is located below the polyurethane foam 11. When the polyurethane foam 11 is laid, it is placed above the first panel 81 in a drooping state. The first distance sensor 84 is used to monitor the distance from the laid polyurethane foam 11 in real time. When the guide roller group 3 conveys the polyurethane foam 11 too quickly, causing the polyurethane foam 11 to rise too much, the first distance sensor 84 converts this information into an electrical signal to control the external power source of the guide roller group 3, reducing the rotation speed of the guide roller group 3, thereby slowing down the conveying speed to prevent the polyurethane foam 11 from being excessively pulled or even broken due to the increasing conveying speed; when the guide roller group 3 conveys the polyurethane foam 11 at a slower and slower speed, causing the polyurethane foam 11 to sink more and more and exceed the critical value, the first distance sensor 84 converts this information into an electrical signal to control the external power source of the guide roller group 3, increasing the rotation speed of the guide roller group 3, thereby increasing the conveying speed, effectively preventing the polyurethane foam 11 from being dragged onto the ground 1 and contaminated;

[0054] The second control group 9 includes a second panel 91 mounted on the main body 2, a second positioning plate 92 centrally mounted on the bottom of the second panel 91, a second distance sensor 93 mounted on the second positioning plate 92, and a second through slot 94 provided on the second panel 91;

[0055] The transmitting end of the second distance sensor 93 is aligned with the second through slot 94 , and the second distance sensor 93 is electrically connected to the power source of the winding roller 7 ;

[0056] The balancing assembly 10 includes two mounting members 101 disposed opposite to each other on the inner side wall of the main body 2, a main rod 102 rotatably mounted at both ends in the two mounting members 101, frame plates 103 fixed to both sides of the main rod 102 by bolts, two rotating rods 104 equidistantly mounted between the two frame plates 103 and located in front of the main rod 102, and a tail rod 105 mounted between the two frame plates 103 and located behind the main rod 102;

[0057] The two rotating rods 104 are located directly above the second regulating group 9. Under normal circumstances, the two frame plates 103 are in an oblique downward posture, that is, the tail rod 105 is higher than the two rotating rods 104; the polyurethane foam 11 passes through the bottom of the two rotating rods 104 and is attached obliquely upward to the second traction roller 6, ensuring that the second distance sensor 93 can monitor the polyurethane foam 11 passing under the two rotating rods 104, ensuring that the polyurethane foam 11 will not escape the monitoring of the second distance sensor 93 under the constraints of the two rotating rods 104 and the two frame plates 103; when the winding roller 7 winds the polyurethane foam 11 faster and faster and pulls the two rotating rods 104 and the two frame plates 103 upward synchronously, Until the preset critical value is exceeded, the first distance sensor 84 converts this information into an electrical signal to control the external power source of the winding roller 7, reducing the rotation speed of the winding roller 7, slowing down the winding speed, and gradually resetting the two rotating rods 104 and the two frame plates 103, thereby cooperating with the first control group 8 to perform real-time monitoring and control at the positions of the head and tail of the polyurethane foam 11, effectively ensuring the overall coordination of the polyurethane foam winding device when winding the polyurethane foam 11, ensuring the coordinated and smooth winding of the polyurethane foam 11, and effectively preventing the polyurethane foam 11 from being excessively pulled and affecting its quality or even breaking, resulting in waste and increased production costs;

[0058] The balancing assembly 10 also includes slot plates 106 respectively installed on the sides of the two frame plates 103 and located on both sides of the tail rod 105, and counterweight blocks 107 respectively detachably installed in the two slot plates 106. The two counterweight blocks 107 of different weights can be flexibly replaced. When the weight of the two counterweight blocks 107 changes, the force required for the polyurethane foam 11 to gradually pull up the two rotating rods 104 and the two frame plates 103 from the other end will also change, thereby ensuring that the specific required winding control effect of the polyurethane foam 11 can be obtained through quick and flexible adjustment. Example 2

[0059] See also Figure 6 , Figure 6 Shows a second partial perspective view of the present invention; see Figure 7 , Figure 7 Shows the second partial front view of the utility model; please refer to Figure 10 , Figure 10 Shows the utility model Figure 6 The enlarged view of point C; Figure 6 、 7As shown in Figures 10 and 10, the balancing assembly 10 includes a bottom block 12 provided on the second table panel 91, a plurality of bearings 13 installed at equal intervals on the top of the bottom block 12, a core rod 14 installed on the inner rings of the plurality of bearings 13, support rods 15 installed at both ends of the core rod 14, a balancing plate 16 installed on the two support rods 15, a groove plate 17 installed inverted at the front end of the balancing plate 16, a plurality of small rollers 18 installed in the groove plate 17 for rotation side by side, and a trapezoidal block 19 installed at the bottom of the front end of the balancing plate 16;

[0060] The balancing plate 16 is located directly above the second distance sensor 93. When the polyurethane foam 11 is first laid out, it is passed through the groove plate 17 along several small rollers 18. The second distance sensor 93 monitors the distance between the balancing plate 16, indirectly reflecting the distance between the polyurethane foam 11 and the second distance sensor 93, enabling real-time monitoring and control. The balancing plate 16 is supported by several bearings 13, a core rod 14, and two support rods 15 to ensure that it can be pulled upward by the polyurethane foam 11. The two support rods 15 are located at the rear of the balancing plate 16, and the downward pressure of the trapezoidal blocks 19 assists to ensure that the balancing plate 16 is normally tilted downward.

[0061] The balancing assembly 10 further includes two universal balls 20 mounted on the balancing plate 16, hollow rods 21 mounted on the two universal balls 20, a push rod 22 with one end respectively fitted and slidably inserted into the two hollow rods 21, and a spring 23 with one end respectively detachably connected to the two push rods 22.

[0062] The other ends of the two springs 23 are respectively in contact with the inner bottom surfaces of the two hollow rods 21;

[0063] The other ends of the two push rods 22 are connected to the rear end of the balance plate 16. When the other end of the balance plate 16 is pulled and tilted upward, the two push rods 22 are pressed down in the two hollow rods 21 and the two springs 23 are compressed at the same time. When the two springs 23 with different elastic coefficients are replaced, the force required to compress the two springs 23 to the same state will change accordingly, thereby ensuring that the specific required winding control effect of the polyurethane foam 11 can be achieved through rapid and flexible adjustment. The movement trajectory of the end of the balance plate 16 is an arc. The two hollow rods 21 can be twisted in any direction through the two universal balls 20, ensuring that the two hollow rods 21 can be twisted adaptively with the movement of the balance plate 16 through the two universal balls 20 to prevent interference with the movement of the balance plate 16.

[0064] Several of the small rollers 18 protrude from the groove plate 17, that is, the small rollers 18 located on the leftmost and rightmost sides of the several small rollers 18 both extend out of the groove plate 17, ensuring that the polyurethane foam 11 is pulled smoothly while preventing the polyurethane foam 11 from rubbing against the groove plate 17 and affecting the quality of the polyurethane foam 11.

[0065] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that the present invention is susceptible to various modifications and variations. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A polyurethane foam winding device, characterized in that: include: A main body (2) arranged on the ground (1), a guide roller group (3), a first traction roller (4), a traction and splitting group (5), a second traction roller (6) and a winding roller (7) arranged on the main body (2), a first regulating group (8) arranged on the main body (2) and the ground (1), a second regulating group (9) arranged on the main body (2), a balancing component (10) arranged on the main body (2) and the second regulating group (9), and a polyurethane foam (11) arranged in sequence from right to left through the guide roller group (3), the first traction roller (4), the traction and splitting group (5), the balancing component (10) and the second traction roller (6) and wound on the winding roller (7); The balancing component (10) is located above the second regulating group (9); The guide roller group (3) and the winding roller (7) are respectively connected to an external power source on the main body (2); The first regulating group (8) and the second regulating group (9) are connected to the external power source of the guide roller group (3) and the winding roller (7), respectively, wherein The guide roller group (3) is suitable for conveying the polyurethane foam (11) forward; The winding roller (7) is suitable for continuously winding and wrapping the polyurethane foam (11) so as to pull the polyurethane foam (11) forward on the first traction roller (4), the traction and segmentation group (5), the balancing component (10) and the second traction roller (6) in sequence; The first regulating group (8) and the second regulating group (9) are adapted to respectively regulate the rotational speeds of the guide roller group (3) and the winding roller (7); The balancing component (10) is suitable for being pulled by the polyurethane foam (11) and adaptively shaking along with the polyurethane foam (11).

2. The polyurethane foam winding device according to claim 1, characterized in that: The first control group (8) comprises a first panel (81) connected to the main body (2), two legs (82) respectively mounted at both ends of the bottom of the first panel (81) away from the main body (2), and the two legs (82) are supported on the ground (1), a first positioning plate (83) centrally mounted on the bottom of the first panel (81), a first distance sensor (84) mounted on the first positioning plate (83), and a first through slot (85) opened on the first panel (81); The transmitting end of the first distance sensor (84) is aligned with the first through slot (85), and the first distance sensor (84) is electrically connected to an external power source of the guide roller group (3); The first table panel (81) is located below the polyurethane foam (11).

3. The polyurethane foam winding device according to claim 2, characterized in that: The balancing assembly (10) comprises two mounting members (101) disposed opposite to each other on the inner side walls of the main body (2), a main rod (102) with both ends rotatably mounted in the two mounting members (101), frame plates (103) fixed to both sides of the main rod (102) by bolts, two rotating rods (104) mounted between the two frame plates (103) and located in front of the main rod (102), and a tail rod (105) mounted between the two frame plates (103) and located behind the main rod (102); The two rotating rods (104) are located directly above the second regulating group (9).

4. The polyurethane foam winding device according to claim 3, characterized in that: The balancing assembly (10) further comprises slot plates (106) respectively mounted on the sides of the two frame plates (103) and respectively located on both sides of the tail rod (105), and counterweight blocks (107) respectively detachably mounted in the two slot plates (106).

5. The polyurethane foam winding device according to claim 4, characterized in that: The second control group (9) comprises a second panel (91) mounted on the main body (2), a second positioning plate (92) centrally mounted on the bottom of the second panel (91), a second distance sensor (93) mounted on the second positioning plate (92), and a second through slot (94) provided on the second panel (91); The transmitting end of the second distance sensor (93) is aligned with the second through slot (94), and the second distance sensor (93) is electrically connected to the power source of the winding roller (7).

6. The polyurethane foam winding device according to claim 5, characterized in that: The balancing assembly (10) includes a bottom block (12) arranged on the second table panel (91), a plurality of bearings (13) installed at equal intervals on the top of the bottom block (12), a core rod (14) installed on the inner rings of the plurality of bearings (13), support rods (15) respectively installed at both ends of the core rod (14), a balancing plate (16) installed on the two support rods (15), a groove plate (17) installed upside down at the front end of the balancing plate (16), a plurality of small rollers (18) installed in the groove plate (17) for rotation in parallel, and a trapezoidal block (19) installed at the bottom of the front end of the balancing plate (16); The balance board (16) is located directly above the second distance sensor (93).

7. The polyurethane foam winding device according to claim 6, characterized in that: The balancing assembly (10) further comprises two universal balls (20) mounted on the balancing plate (16), hollow rods (21) respectively mounted on the two universal balls (20), a push rod (22) with one end respectively fitted and slidably inserted into the two hollow rods (21), and a spring (23) with one end respectively detachably connected to the two push rods (22); The other ends of the two springs (23) are respectively in contact with the inner bottom surfaces of the two hollow rods (21); The other ends of the two push rods (22) are connected to the rear end of the balance plate (16).

8. The polyurethane foam winding device according to claim 7, characterized in that: A plurality of small rollers (18) protrude from the groove plate (17).

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