Thermal insulation cotton compression method

Abstract

The invention relates to a thermal insulation cotton compression method which comprises the following steps: laying thermal insulation cotton to be compacted on a bottom plate, and penetrating through thermal insulation nails welded on the bottom plate; the height of a baffle in the hollow compaction tool is adjusted according to the preset compression amount; the adjusted hollow compaction tool is arranged on the heat preservation nail in a sleeving mode, the hollow compaction tool is pressed downwards till the top end of the heat preservation nail abuts against the baffle, and a pressing plate arranged on the heat preservation nail in a sleeving mode is located at the compaction height required by the to-be-compacted heat preservation cotton; the pressing plate and the heat preservation nail are welded, and the hollow compaction tool is removed; by means of the arrangement, compared with an existing mode that heat preservation cotton is fixed after manual treading compression and heavy object compression, construction is simple and efficient, the compression amount of the heat preservation cotton can be accurately controlled, and it is guaranteed that the compression amounts of all parts are consistent.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of thermal insulation cotton, in particular to a thermal insulation cotton compression method. BACKGROUND

[0002] At present, thermal insulation cotton has a wide range of applications in the industrial and building fields due to its excellent heat insulation performance, and is one of the key materials for achieving energy saving and consumption reduction and improving environmental temperature. In actual application, thermal insulation cotton is usually in a fluffy state. In order to meet the installation size requirements, ensure the fixing stability and ensure the uniformity of the thermal insulation effect, it is often necessary to compress it to a certain thickness for fixing during use. Therefore, the compression operation of thermal insulation cotton is one of the core links in the installation and construction process.

[0003] At present, the compression and fixing of thermal insulation cotton in the industry mainly adopts two traditional methods: one is that the construction personnel directly step on the thermal insulation cotton, and fixes the thermal insulation cotton after subjective judgment reaches the approximate required thickness; the other is to cover a heavy object on the surface of the thermal insulation cotton, and realize the compression of the thermal insulation cotton through the gravity of the heavy object, and then complete the fixing operation after observing that the thickness of the thermal insulation cotton meets the requirements.

[0004] However, the above two traditional compression and fixing methods have significant defects and deficiencies, and it is difficult to meet the requirements of modern construction on precision, efficiency and quality stability. On the one hand, the compaction degree control precision is extremely low. Whether it is artificial treading or heavy object covering, it depends on the subjective judgment and experience of the construction personnel, and the compression amount of the thermal insulation cotton cannot be accurately controlled, which leads to a large difference in the compression thickness of the thermal insulation cotton in different parts of the same construction area, affects the installation flatness of the thermal insulation cotton, and also leads to uneven thermal insulation effect due to local insufficient compression or excessive compression, and even reduces the overall thermal insulation performance. On the other hand, the construction efficiency is low. The labor intensity of artificial treading is large, and the processing range of a single person is limited. The heavy object covering method needs to frequently carry, place and remove the heavy object, and the operation process is complicated, which greatly increases the construction time cost, and it is difficult to adapt to large-scale and high-efficiency construction demand.

[0005] In summary, the existing thermal insulation cotton compression and fixing technology has the problems of insufficient compaction precision and low construction efficiency, which has become a key bottleneck restricting the installation and construction quality and progress of thermal insulation cotton. The industry urgently needs a technical solution that can realize the rapid and accurate compression and fixing of thermal insulation cotton to solve the deficiencies of the existing technology. SUMMARY

[0006] In view of the deficiencies of the prior art, the purpose of the present application is to provide a thermal insulation cotton compression method, which has the advantages of improving the compaction precision and efficiency, shortening the construction time and ensuring the construction quality of the thermal insulation cotton.

[0007] The above invention purpose of the present application is realized by the following technical solutions: a heat insulation cotton compression method, comprising the following steps:

[0008] Laying the heat insulation cotton to be compacted on a bottom plate and through heat insulation nails welded on the bottom plate;

[0009] Adjusting the height of a baffle in a hollow compacting tool according to a preset compression amount;

[0010] Sleeving the adjusted hollow compacting tool on the heat insulation nails, and pressing down the hollow compacting tool until the top end of the heat insulation nails abuts against the baffle, and the pressing plate sleeved on the heat insulation nails is located at the position of the required compacting height of the heat insulation cotton to be compacted;

[0011] Welding the pressing plate and the heat insulation nails, and removing the hollow compacting tool.

[0012] Preferably, the heat insulation cotton compression method provided by the present application comprises the following steps:

[0013] Welding a plurality of heat insulation nails on the bottom plate, and arranging the plurality of heat insulation nails in a rectangular array;

[0014] Laying the heat insulation cotton to be compacted through the plurality of heat insulation nails and on the bottom plate;

[0015] Laying the cotton pressing plate through the plurality of heat insulation nails and on the heat insulation cotton to be compacted.

[0016] Preferably, the hollow compacting tool comprises a sleeve, a pressing jaw and a stop unit, the top end of the sleeve is covered with a cover plate, a through hole is formed in the cover plate, the through hole is in communication with the cavity of the sleeve, the top end of the pressing jaw is inserted into the bottom end of the sleeve, the pressing jaw is surrounded to form a rotating cavity, the rotating cavity is connected with the cavity of the sleeve, the bottom end of the stop unit is inserted into the cavity of the sleeve through the through hole, the top end of the stop unit extends to the outside of the sleeve, and the stop unit can move relative to the sleeve to adjust the preset compression amount.

[0017] Preferably, the present application provides a method for compressing thermal cotton, wherein the stop unit comprises a screw and a baffle, the baffle is located in the cavity of the sleeve, the baffle can slide relative to the sleeve, the bottom end of the screw is inserted into the cavity of the sleeve through the through hole and connected with the top surface of the baffle, the top end of the screw extends to the outside of the sleeve and is screwed with a locking nut, the locking nut is located on the cover plate, and the screw can move relative to the sleeve; when adjusting the preset compression amount, the locking nut is loosened, the screw is moved along the center line direction of the sleeve, the screw drives the baffle to move to the preset height, and then the locking nut is locked.

[0018] Preferably, the present application provides a method for compressing thermal cotton, wherein a scale is engraved on the outer peripheral wall of the screw.

[0019] Preferably, the present application provides a method for compressing thermal cotton, wherein the hollow compaction tool further comprises a handle, and the handle is arranged on the outer peripheral wall close to the top end of the sleeve.

[0020] Preferably, the present application provides a method for compressing thermal cotton, wherein the height of the baffle in the hollow compaction tool is adjusted according to the preset compression amount, including: loosening the locking nut, moving the screw along the center line direction of the sleeve according to the preset compression amount, driving the baffle to move to the preset height by the screw, and then locking the locking nut.

[0021] Preferably, the present application provides a method for compressing thermal cotton, wherein the hollow compaction tool is sleeved on the thermal nail, the hollow compaction tool is pressed downward until the top end of the thermal nail abuts against the baffle, and the pressing plate sleeved on the thermal nail is located at the position of the compaction height required by the thermal cotton to be compacted, including:

[0022] The pressing plate is sleeved on the thermal nail, and the pressing plate can slide along the thermal nail;

[0023] The top end of the thermal nail is inserted into the cavity of the sleeve through the pressing jaw, and the bottom end of the pressing jaw is in contact with the top surface of the pressing plate;

[0024] The hollow compaction tool is pressed downward, the hollow compaction tool drives the pressing plate to move downward along the thermal nail until the top end of the thermal nail abuts against the bottom surface of the baffle, the downward pressure of the hollow compaction tool is stopped, and the pressing plate reaches the position of the compaction height required by the thermal cotton to be compacted.

[0025] Preferably, the present application provides a method for compressing thermal cotton, wherein the pressing plate and the thermal nail are welded, and the hollow compaction tool is removed, including:

[0026] welding the heat preservation pin with the pressing plate through the gap between two adjacent jaws on the pressing jaw;

[0027] removing the hollow compaction tool.

[0028] Preferably, the distance of the baffle to the bottom surface of the pressing jaw in the heat preservation cotton compression method is calculated according to the formula:

[0029] L = H + (S - D)

[0030] In the formula, L is the distance of the baffle to the bottom surface of the pressing jaw, H is the preset compression amount of the heat preservation cotton to be compacted, S is the height value of the heat preservation pin, and D is the initial thickness value of the heat preservation cotton to be compacted.

[0031] In summary, the heat preservation cotton compression method provided by the application comprises the following steps: laying the heat preservation cotton to be compacted on the bottom plate and passing through the heat preservation pins welded on the bottom plate; adjusting the height of the baffle in the hollow compaction tool according to the preset compression amount; sleeving the adjusted hollow compaction tool on the heat preservation pin, and pressing the hollow compaction tool until the top end of the heat preservation pin abuts against the baffle, and the pressing plate sleeved on the heat preservation pin is located at the position of the compacted height required by the heat preservation cotton to be compacted; welding the pressing plate and the heat preservation pin, and removing the hollow compaction tool; in this way, compared with the existing method of fixing the heat preservation cotton after compression by using manpower and heavy objects, the construction is simple and efficient, and the compression amount of the heat preservation cotton can be accurately controlled to ensure that the compression amounts of all parts are consistent. BRIEF DESCRIPTION OF DRAWINGS

[0032] Figure 1 is a flowchart of the heat preservation cotton compression method provided by the embodiment of the application.

[0033] Figure 2 is a connection structure schematic view of the hollow compaction tool, the bottom plate and the heat preservation pin in the heat preservation cotton compression method provided by the embodiment of the application.

[0034] Figure 3 is a sectional view of the connection structure of the hollow compaction tool, the bottom plate and the heat preservation pin in the heat preservation cotton compression method provided by the embodiment of the application.

[0035] Figure 4 is a front view of the connection structure of the hollow compaction tool, the bottom plate and the heat preservation pin in the heat preservation cotton compression method provided by the embodiment of the application.

[0036] Figure 5 is a front view of the hollow compaction tool in the heat preservation cotton compression method provided by the embodiment of the application.

[0037] Figure 6 is a top view of the hollow compaction tool in the heat preservation cotton compression method provided by the embodiment of the application.

[0038] Figure 7 is a sectional view of the hollow compaction tool in the insulation cotton compression method provided by the embodiment of the present application.

[0039] In the figure, 1, insulation cotton to be compacted; 2, bottom plate; 3, insulation nail; 4, pressing plate; 41, groove; 42, sliding hole; 5, hollow compaction tool; 51, sleeve; 511, sealing plate; 512, limiting flange; 52, pressing jaw; 521, first pipe body; 522, second pipe body; 523, jaw; 53, stop unit; 531, screw rod; 532, baffle; 533, guide nut; 534, locking nut; 54, handle; 541, threaded pipe; 542, gripping part. DETAILED DESCRIPTION

[0040] The present application will be further described in detail below with reference to the accompanying drawings.

[0041] Reference Figures 1 to 4 The present application discloses an insulation cotton compression method, comprising the following steps:

[0042] S101, laying the insulation cotton to be compacted 1 on the bottom plate 2 and through the insulation nails 3 welded on the bottom plate 2;

[0043] S102, adjusting the height of the baffle 532 in the hollow compaction tool 5 according to the preset compression amount;

[0044] S103, sleeving the adjusted hollow compaction tool 5 on the insulation nail 3, and pressing down the hollow compaction tool 5 until the top end of the insulation nail 3 abuts against the baffle 532, and the pressing plate 4 sleeved on the insulation nail 3 is located at the position of the required compaction height of the insulation cotton to be compacted;

[0045] S104, welding the pressing plate 4 and the insulation nail 3, and removing the hollow compaction tool 5; in this way, compared with the traditional insulation cotton compression and fixing method, the compaction precision and efficiency are improved, the construction time is shortened, and the construction quality of the insulation cotton is ensured.

[0046] It should be noted that the pre-compression amount is the amount of the insulation cotton to be compacted, that is, the pre-compression amount = the initial thickness value of the insulation cotton to be compacted - the required thickness value of the insulation cotton to be compacted.

[0047] Further, in the embodiment, S101, laying the insulation cotton to be compacted 1 on the bottom plate 2 and through the insulation nails 3 welded on the bottom plate 2, comprises:

[0048] S1011, welding a plurality of insulation nails 3 on the bottom plate 2, and the plurality of insulation nails 3 are arranged in a rectangular array;

[0049] S1012, passing the insulation cotton to be compacted 1 through the plurality of insulation nails 3 and laying on the bottom plate 2;

[0050] S1013, pass the cotton plate through the plurality of heat preservation nails 3, and lay on the insulation cotton 1 to be compacted.

[0051] Specifically, the extension direction of the heat preservation nail 3 is perpendicular to the bottom plate 2.

[0052] Continuing to refer to Figures 5 to 7 In the embodiment, the hollow compacting tool 5 includes a sleeve 51, a pressing jaw 52, and a stop unit 53. The top end of the sleeve 51 is provided with a cover plate 511, the cover plate 511 is provided with a through hole, the through hole is in communication with the cavity of the sleeve 51, the top end of the pressing jaw 52 is inserted into the bottom end of the sleeve 51, the pressing jaw 52 is surrounded to form a rotating cavity, the rotating cavity is connected with the cavity of the sleeve 51, the bottom end of the stop unit 53 is inserted into the cavity of the sleeve 51 through the through hole, the top end of the stop unit 53 extends to the outside of the sleeve 51, and the stop unit 53 can move relative to the sleeve 51 to adjust the preset compression amount.

[0053] Further, in the embodiment, the pressing jaw 52 includes a first tube body 521 and a second tube body 522. The bottom end of the first tube body 521 is connected with the top end of the second tube body 522. The end of the second tube body 522 away from the first tube body 521 is provided with a plurality of jaws 523. The plurality of jaws 523 are arranged at intervals around the circumference of the second tube body 522, that is, a gap is left between each adjacent two jaws 523.

[0054] The outer diameter of the first tube body 521 is smaller than the outer diameter of the sleeve 51, the outer diameter of the sleeve 51 is smaller than the outer diameter of the second tube body 522, the first tube body 521 surrounds to form a first chamber, the second tube body 522 surrounds to form a second chamber, the first chamber and the second chamber are in communication, and together form the rotating cavity.

[0055] During installation, the first tube body 521 is inserted into the cavity at the bottom end of the sleeve 51, the outer peripheral wall of the first tube body 521 is connected with the inner peripheral wall of the sleeve 51, and the bottom end of the sleeve 51 abuts against the top end of the second tube body 522.

[0056] Further, in the embodiment, the stop unit 53 includes a screw 531 and a baffle 532. The baffle 532 is located in the cavity of the sleeve 51 and can slide relative to the sleeve 51. The bottom end of the screw 531 is inserted into the cavity of the sleeve 51 through the through hole and connected with the top surface of the baffle 532. The top end of the screw 531 extends to the outside of the sleeve 51 and is threadedly connected with a locking nut 534 located on the cover plate 511. The screw 531 can move relative to the sleeve 51. When adjusting the preset compression amount, the locking nut 534 is loosened, the screw 531 is moved along the center line direction of the sleeve 51, the screw 531 drives the baffle 532 to move to a preset height, and then the locking nut 534 is locked.

[0057] Specifically, at the initial position, the bottom surface of the baffle 532 is in contact with the top surface of the first pipe body 521.

[0058] wherein the baffle and the pressing plate are both plate-shaped, the baffle is arranged perpendicularly to the extension direction of the screw rod, and when the baffle 532 moves to the preset position, the distance from the baffle 532 to the bottom surface of the pressing jaw 52 is calculated by the formula:

[0059] L = H + (S - D)

[0060] In the formula, L is the distance from the baffle 532 to the bottom surface of the pressing jaw 52; H is the preset compression amount of the insulation cotton to be compacted; S is the height value of the insulation nail 3; and D is the initial thickness value of the insulation cotton to be compacted.

[0061] In some possible implementation manners, the central position of the pressing plate 4 is provided with a downwardly recessed groove 41, the bottom end of the groove 41 is provided with a sliding hole 42, the sliding hole 42 penetrates through the bottom end of the groove 41, and the top end of the insulation nail 3 is arranged in the sliding hole 42.

[0062] In the use process, the top end of the insulation nail 3 is inserted into the cavity of the sleeve 51 through the pressing jaw 52, and the bottom end of the pressing jaw 52 is inserted into the groove 41 and in contact with the inner bottom surface of the groove 41. In this way, sliding between the pressing plate 4 and the pressing jaw 52 is avoided when the pressing plate 4 is pressed downward.

[0063] wherein the distance from the baffle 532 to the bottom surface of the pressing jaw 52 is calculated by the formula:

[0064] L = H + (S - D) + W

[0065] In the formula, L is the distance from the baffle 532 to the bottom surface of the pressing jaw 52; H is the preset compression amount of the insulation cotton to be compacted; S is the height value of the insulation nail 3; D is the initial thickness value of the insulation cotton to be compacted; and W is the depth value of the groove 41.

[0066] wherein the center line of the screw rod 531 is arranged in parallel with the center line of the sleeve 51, and in some possible implementation manners, the center line of the screw rod 531 is arranged in line with the center line of the sleeve 51.

[0067] In order to avoid shaking of the screw rod 531 when moving along the center line direction of the sleeve 51, a guide nut 533 is arranged in the cavity of the sleeve 51, the outer peripheral wall of the guide nut 533 is connected in close contact with the inner peripheral wall of the sleeve 51, the baffle 532 is located between the guide nut 533 and the first pipe body 521, the bottom end of the screw rod 531 is inserted into the cavity of the sleeve 51 through the through hole and connected with the top surface of the baffle 532 by screwing, and the screw rod 531 is threadedly connected with the guide nut 533.

[0068] As Figure 7As shown, in the embodiment, the number of guide nuts 533 is 2, of course, the number of guide nuts 533 can also be 1 or 3.

[0069] When adjusting the preset compression amount, loosen the locking nut 534, rotate the screw rod 531, the screw rod 531 moves along the center line direction of the sleeve 51, and the screw rod 531 drives the baffle 532 to move to the preset height, and then locks the locking nut 534.

[0070] In order to facilitate understanding of the moving length of the screw rod 531, a scale is engraved on the outer peripheral wall of the screw rod 531. In the use process, after adjusting the baffle height through the screw rod scale, a vernier caliper is used to detect the distance from the baffle to the bottom surface of the pressure pawl, and the error is controlled within ±0.5mm.

[0071] Further, in the embodiment, the hollow compaction tool 5 further comprises a handle 54, which is arranged on the outer peripheral wall close to the top end of the sleeve 51; by arranging the handle 54, it is convenient to press down the hollow compaction tool 5.

[0072] The handle 54 comprises a threaded pipe 541 and two oppositely arranged holding portions 542, both of which are arranged on the outer peripheral wall of the threaded pipe 541, one end of the holding portion 542 is connected with the outer peripheral wall of the threaded pipe 541, and the other end of the holding portion 542 extends outward along the radial direction of the threaded pipe 541.

[0073] Specifically, an external thread is arranged on the outer peripheral wall close to the top end of the sleeve 51, the external thread is matched with the internal thread of the threaded pipe 541, the threaded pipe 541 is screwed on the outer peripheral wall close to the top end of the sleeve 51, and the threaded pipe 541 is threadedly connected with the sleeve 51.

[0074] In order to avoid that the threaded pipe 541 moves along the sleeve 51 when pressing down the hollow compaction tool 5, a limiting flange 512 is arranged on the outer peripheral wall of the sleeve 51, the limiting flange 512 extends outward along the radial direction of the sleeve 51, the threaded pipe 541 is screwed on the outer peripheral wall close to the top end of the sleeve 51, and the bottom end of the threaded pipe 541 abuts against the top surface of the limiting flange 512.

[0075] Continuing to refer to Figures 1 to 4 In the embodiment, S102, adjusting the height of the baffle 532 in the hollow compaction tool 5 according to the preset compression amount, comprises: loosening the locking nut 534, moving the screw rod 531 along the center line direction of the sleeve 51 according to the preset compression amount, driving the baffle 532 to move to the preset height, and locking the locking nut 534.

[0076] Specifically, when the preset compression amount is adjusted, the locking nut 534 is loosened, the screw rod 531 is rotated, the screw rod 531 moves along the center line direction of the sleeve 51, the baffle 532 is moved to the preset height under the action of the screw rod 531, and then the locking nut 534 is locked. When the recess is not arranged on the pressing plate, at this time, the distance L from the baffle 532 to the bottom surface of the pressing claw 52 is L = H + (S - D), wherein L is the distance from the baffle 532 to the bottom surface of the pressing claw 52, H is the preset compression amount of the insulation cotton to be compacted, S is the height value of the insulation nail 3, and D is the initial thickness value of the insulation cotton to be compacted. When the recess is arranged on the pressing plate, the calculation formula of the distance from the baffle 532 to the bottom surface of the pressing claw 52 is L = H + (S - D) + W, wherein L is the distance from the baffle 532 to the bottom surface of the pressing claw 52, H is the preset compression amount of the insulation cotton to be compacted, S is the height value of the insulation nail 3, D is the initial thickness value of the insulation cotton to be compacted, and W is the depth value of the recess 41.

[0077] Further, in the embodiment, S103, the adjusted hollow compacting tool 5 is sleeved on the insulation nail 3, and the hollow compacting tool 5 is pressed downward until the top end of the insulation nail 3 abuts against the baffle 532, and the pressing plate 4 sleeved on the insulation nail 3 is located at the position of the compacted height required by the insulation cotton to be compacted, comprising:

[0078] S1031, the pressing plate 4 is sleeved on the insulation nail 3, and the pressing plate 4 can slide along the insulation nail 3;

[0079] S1032, the top end of the insulation nail 3 is inserted into the cavity of the sleeve 51 through the pressing claw 52, and the bottom end of the pressing claw 52 is in contact with the top surface of the pressing plate 4;

[0080] S1033, the hollow compacting tool 5 is pressed downward, the hollow compacting tool 5 drives the pressing plate 4 to move downward along the insulation nail 3 until the top end of the insulation nail 3 abuts against the bottom surface of the baffle 532, the downward pressure of the hollow compacting tool 5 is stopped, and the pressing plate 4 reaches the position of the compacted height required by the insulation cotton to be compacted.

[0081] Further, in the embodiment, S104, the pressing plate 4 and the insulation nail 3 are welded, and the hollow compacting tool 5 is removed, comprising:

[0082] S1041, the insulation nail 3 and the pressing plate 4 are welded through the gap between the adjacent two claws 523 of the pressing claw 52;

[0083] S1042, the hollow compacting tool 5 is removed.

[0084] The above S103-S104 is repeated until the pressing plate 4 on each of the plurality of insulation nails 3 reaches the position of the preset compression amount of the insulation cotton. After the compacting and fixing of the insulation cotton to be compacted are completed, the thickness of each part of the insulation cotton is detected by using the thickness gauge to ensure that the thickness difference does not exceed 1 mm.

[0085] It should be noted that for insulation cotton with good flexibility, anti-slip textures can be added to the bottom surface of the pressure plate to prevent the insulation cotton from sliding during compression.

[0086] The insulation cotton compression method provided in this application includes the following steps: laying the insulation cotton 1 to be compressed on the base plate 2 and passing it through the insulation nail 3 welded on the base plate 2; adjusting the height of the baffle 532 inside the hollow compaction fixture 5 according to the preset compression amount; fitting the adjusted hollow compaction fixture 5 onto the insulation nail 3 and pressing down the hollow compaction fixture 5 until the top of the insulation nail 3 abuts against the baffle 532, and the pressure plate 4 fitted onto the insulation nail 3 is located at the required compaction height of the insulation cotton to be compressed; welding the pressure plate 4 to the insulation nail 3 and removing the hollow compaction fixture 5; this setup, compared with the existing method of using manual stepping to compress and then fixing the insulation cotton after compression with heavy objects, is simple and efficient in construction, and can accurately control the compression amount of the insulation cotton, ensuring that the compression amount of each part is consistent.

[0087] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0088] Finally, it should be noted that the above embodiments are merely examples for clearly illustrating the present invention and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations. However, obvious variations or modifications derived therefrom are still within the scope of protection of this invention.

Claims

1. A method of compressing thermal insulation wool, characterized by: It comprises the following steps: Laying the insulation cotton to be compacted on the bottom plate and through the insulation nails welded on the bottom plate; Adjusting the height of the baffle in the hollow compacting tool according to the preset compression amount; Sleeving the adjusted hollow compacting tool on the insulation nail, and pressing down the hollow compacting tool until the top end of the insulation nail abuts against the baffle, and the pressing plate sleeved on the insulation nail is located at the position of the required compacting height of the insulation cotton to be compacted; Welding the pressing plate and the insulation nail, and removing the hollow compacting tool.

2. The method of claim 1, wherein: The laying of the insulation cotton to be compacted on the bottom plate and through the insulation nails welded on the bottom plate comprises: Welding a plurality of insulation nails on the bottom plate, and arranging the plurality of insulation nails in a rectangular array; Laying the insulation cotton to be compacted through the plurality of insulation nails and on the bottom plate; Laying the cotton pressing plate through the plurality of insulation nails and on the insulation cotton to be compacted.

3. The method of claim 1, wherein: The hollow compacting tool comprises a sleeve, a pressing jaw and a stop unit, the top end of the sleeve is provided with a cover plate, a through hole is formed in the cover plate, the through hole is communicated with the cavity of the sleeve, the top end of the pressing jaw is inserted into the bottom end of the sleeve, the pressing jaw is surrounded to form a rotating cavity, the rotating cavity is connected with the cavity of the sleeve, the bottom end of the stop unit is inserted into the cavity of the sleeve through the through hole, the top end of the stop unit extends to the outside of the sleeve, and the stop unit can move relative to the sleeve to adjust the preset compression amount.

4. The method of claim 3, wherein: The stop unit comprises a screw rod and a baffle, the baffle is located in the cavity of the sleeve, the baffle can slide relative to the sleeve, the bottom end of the screw rod is inserted into the cavity of the sleeve through the through hole and connected with the top surface of the baffle, the top end of the screw rod extends to the outside of the sleeve and is threadedly connected with a locking nut, the locking nut is located on the cover plate, and the screw rod can move relative to the sleeve; When adjusting the preset compression amount, the locking nut is loosened, the screw rod is moved along the center line direction of the sleeve, the screw rod drives the baffle to move to the preset height, and then the locking nut is locked.

5. The method of claim 4, wherein: A scale is engraved on the outer peripheral wall of the screw rod.

6. The method of claim 3, wherein: The hollow compacting tool further comprises a handle, and the handle is arranged on the outer peripheral wall close to the top end of the sleeve.

7. The method of claim 4, wherein: The adjusting of the height of the baffle in the hollow compacting tool according to the preset compression amount comprises: Loosening the locking nut, moving the screw rod along the center line direction of the sleeve according to the preset compression amount, driving the baffle to move to the preset height by the screw rod, and locking the locking nut.

8. The method of claim 4, wherein: The sleeving of the adjusted hollow compacting tool on the insulation nail, the pressing down of the hollow compacting tool until the top end of the insulation nail abuts against the baffle, and the locating of the pressing plate sleeved on the insulation nail at the position of the required compacting height of the insulation cotton to be compacted comprises: Sleeving a pressing plate on the insulation nail, and the pressing plate can slide along the insulation nail; Inserting the top end of the insulation nail into the cavity of the sleeve through the pressing jaw, and the bottom end of the pressing jaw is in contact with the top surface of the pressing plate; Downwardly pressing the hollow compaction tool, the hollow compaction tool pushes the pressing plate to move downward along the heat preservation nail until the top end of the heat preservation nail abuts against the bottom surface of the baffle, stopping downwardly pressing the hollow compaction tool, and the pressing plate reaches the position of the required compaction height of the heat preservation cotton to be compacted.

9. The method of claim 4, wherein: The welding of the pressing plate and the heat preservation nail and the removal of the hollow compaction tool comprise: welding the heat preservation nail and the pressing plate through the gap between the two adjacent claws on the pressing claw; removing the hollow compaction tool.

10. The method of claim 7, wherein: The calculation formula of the distance from the baffle to the bottom surface of the pressing claw is: L=H+(S-D) In the formula, L is the distance from the baffle to the bottom surface of the pressing claw; H is the preset compression amount of the heat preservation cotton to be compacted; S is the height value of the heat preservation nail; and D is the initial thickness value of the heat preservation cotton to be compacted.

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