Heat insulation sheet cutting device

Abstract

The utility model discloses a heat resisting sheet cutting device which comprises a base, a working platform, a mounting frame, a longitudinal cutting assembly, a transverse cutting assembly and a third driving assembly. A fixing assembly is arranged on the working platform and used for fixing a heat insulation sheet. The longitudinal cutting assembly comprises a second air cylinder arranged on the mounting frame, the second air cylinder is connected with a first mounting base, a first cutting knife is arranged at the bottom of the first mounting base, the first cutting knife is in transmission connection with a first driving assembly, and the first driving assembly drives the first cutting knife to move in the Y-axis direction; the transverse cutting assembly comprises a third air cylinder arranged on the mounting frame, the third air cylinder is connected with a second mounting seat, a second cutting knife is arranged at the bottom of the second mounting seat, the second cutting knife is in transmission connection with a second driving assembly, and the second driving assembly drives the second cutting knife to move in the X-axis direction; the third driving assembly is in transmission connection with the working platform and drives the working platform to move in the X-axis direction. The thermal insulation sheet cutting device can prevent thermal insulation sheets from deviating in the cutting process.

Description

Technical Field

[0001] The utility model relates to the technical field of heat insulation sheet cutting, in particular to a heat insulation sheet cutting device. Background Art

[0002] The main power source of new energy vehicles comes from the power battery system. Due to its own resistance, a single battery cell will generate a certain amount of heat while outputting electrical energy, making its own temperature higher. When a single battery cell experiences thermal runaway, the heat is transferred to the surrounding battery cells, which will quickly cause large-scale thermal runaway and pose a huge safety hazard. Therefore, it is necessary to add thermal insulation sheets between the battery cells. After the thermal insulation sheet is produced, in order to avoid dust from affecting its thermal insulation effect, the double-sided film of the thermal insulation sheet will be sealed, and then cut. When cutting, it is necessary to cut along the film seal. When cutting the thermal insulation sheet, the thermal insulation sheet is usually placed on the working platform of the cutting device, and the operator straightens it. However, since the thermal insulation sheet is not fixed during cutting, the thermal insulation sheet is prone to offset, and it is easy to cut the thermal insulation sheet after offset, resulting in poor quality of the finished product. Utility Model Content

[0003] The utility model aims to provide a heat insulation sheet cutting device to prevent the heat insulation sheet from deviating during the cutting process.

[0004] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0005] A heat insulation sheet cutting device, comprising:

[0006] Base;

[0007] A working platform, wherein a mezzanine is provided at the bottom of the working platform, wherein a plurality of first cylinders are provided in the mezzanine, wherein telescopic ends of the first cylinders movably penetrate the working platform and are fixedly connected with a fixing assembly, wherein the fixing assembly can contact or separate from the heat insulation sheet under the driving of the first cylinders;

[0008] A mounting frame, the mounting frame comprising a mounting plate, the mounting plate is located above the working platform, and the mounting plate is fixedly connected to the base through a plurality of connecting members;

[0009] A longitudinal cutting assembly, the longitudinal cutting assembly includes a plurality of second cylinders, the second cylinders are fixedly connected to the top of the mounting plate, the telescopic end of the second cylinder movably penetrates the mounting plate and is fixedly connected to the first mounting seat, a first cutting knife is provided at the bottom of the first mounting seat, the first cutting knife is transmission-connected to the first driving assembly, and the first driving assembly drives the first cutting knife to reciprocate along the Y-axis direction;

[0010] A transverse cutting assembly, the transverse cutting assembly is arranged on one side of the longitudinal cutting assembly, the transverse cutting assembly includes a plurality of third cylinders, the third cylinders are fixedly connected to the top of the mounting plate, the telescopic end of the third cylinder movably penetrates the mounting plate and is fixedly connected to a second mounting seat, a second cutting knife is arranged at the bottom of the second mounting seat, the second cutting knife is transmission-connected to a second driving assembly, and the second driving assembly drives the second cutting knife to reciprocate along the X-axis direction;

[0011] The third driving assembly is connected to the working platform in a transmission manner and drives the working platform to reciprocate along the X-axis direction below the longitudinal cutting assembly and the transverse cutting assembly.

[0012] Specifically, the fixing assembly includes:

[0013] A fixed frame, the fixed frame being fixedly connected to the top of the telescopic end of the first cylinder;

[0014] A plurality of pressing blocks are fixedly connected to the inner wall of the fixing frame, and the pressing blocks are contacted with or separated from the heat insulation sheet under the driving of the first cylinder.

[0015] Specifically, the pressing block comprises:

[0016] Press block body;

[0017] The flexible block is fixedly connected to the bottom of the pressing block body.

[0018] Specifically, a first mounting groove is provided at the bottom of the first mounting seat;

[0019] The first driving assembly comprises:

[0020] A first screw rod, the first screw rod being rotatably connected between two side walls of the first mounting groove;

[0021] A first moving block, wherein the first moving block is sleeved on the outside of the first screw rod through a thread, and the first moving block is fixedly connected to the first cutting knife;

[0022] The first motor is fixedly connected to the outer wall of the first mounting seat, and the output shaft of the first motor passes through the side wall of the first mounting seat and is fixedly connected to one end of the first screw rod.

[0023] Specifically, a second mounting groove is provided at the bottom end of the second mounting seat;

[0024] The second driving assembly comprises:

[0025] A second screw rod, the second screw rod being rotatably connected between two side walls of the second mounting groove;

[0026] A second moving block, the second moving block is sleeved on the outside of the second screw rod through a thread;

[0027] A slide bar, the slide bar being fixedly connected between two side walls of the second mounting groove;

[0028] A slider, the slider is sleeved on the outside of the slide rod, and the slider is slidably connected to the slide rod;

[0029] A second motor, wherein the second motor is fixedly connected to the outer wall of the second mounting seat, and an output shaft of the second motor passes through the side wall of the second mounting seat and is fixedly connected to one end of the second screw rod;

[0030] Wherein, the second cutting knife is fixedly connected to the second moving block and the sliding block.

[0031] Specifically, the third driving component includes:

[0032] Box with top opening:

[0033] A third screw rod, the third screw rod is rotatably connected between the two side walls of the box body;

[0034] A third moving block, the third moving block is sleeved on the outside of the third screw rod through a thread, and the third moving block is fixedly connected to the bottom end of the working platform;

[0035] A third motor, the third motor is fixedly connected to the outer wall of the box body, and the output shaft of the third motor passes through the side wall of the box body and is fixedly connected to the third screw rod;

[0036] Wherein, first sliding grooves are arranged on two opposite outer walls of the working platform, and first sliding rails which are slidably matched with the first sliding grooves are arranged on the inner wall of the box body.

[0037] Specifically, a fourth cylinder is fixedly connected to the base, a telescopic end of the fourth cylinder is fixedly connected to the outer wall of the box body, two second slide grooves are provided at the bottom of the box body, and a second slide rail slidably matched with the second slide grooves is provided on the base.

[0038] Specifically, four positioning plates are fixedly connected to the top of the working platform, and the positioning plates are L-shaped structures. The positioning plates are used to position the four corners of the thermal insulation sheet.

[0039] Specifically, the first cutting knife includes:

[0040] A first fixing seat, the first fixing seat is fixedly connected to the bottom of the first moving block, and a first slot is provided at the bottom of the first fixing seat;

[0041] A first blade is fixedly connected in the first slot.

[0042] Specifically, the second cutting knife includes:

[0043] A fixed plate, the top ends of which are respectively fixedly connected to the second moving block and the bottom ends of the sliding block;

[0044] A plurality of second fixing seats, wherein the second fixing seats are fixedly connected to the bottom end of the fixing plate, and a second slot is provided at the bottom end of the second fixing seat;

[0045] A plurality of second blades are fixedly connected in the second slots.

[0046] Compared with the prior art, the beneficial effects of the utility model are:

[0047] 1. The utility model drives the fixing assembly to press on the heat insulation sheet through the first cylinder, thereby fixing the heat insulation sheet and preventing the heat insulation sheet from shifting during the cutting process.

[0048] 2. The working platform of the utility model is arranged in the box body, and the box body is slidably connected to the base through the second slide groove and the second slide rail. The fourth cylinder pushes the box body to move along the second slide rail, and the box body drives the working platform to move, so that the working platform can be pushed to the outside of the mounting frame, so as to facilitate the operator to place the heat insulation sheet on the working platform. BRIEF DESCRIPTION OF THE DRAWINGS

[0049] Figure 1 It is a schematic diagram of the structure of the utility model;

[0050] Figure 2 It is a structural diagram of the working platform;

[0051] Figure 3 Schematic diagram of the internal structure of the working platform;

[0052] Figure 4 for Figure 3 A magnified image of point A;

[0053] Figure 5 This is a top view of the working platform;

[0054] Figure 6 It is a structural schematic diagram of a first mounting seat, a first cutting knife, and a first driving assembly;

[0055] Figure 7 It is a structural schematic diagram of a second mounting base, a second cutting blade, and a second driving assembly;

[0056] Figure 8 It is a schematic diagram of the internal structure of the utility model;

[0057] Fig. 9 It is a structural schematic diagram of another perspective of the utility model;

[0058] Fig.10 It is a schematic diagram of the working state of the utility model when the working platform is located below the longitudinal cutting assembly;

[0059] Fig.11 It is a schematic diagram of the working state of the utility model when the working platform is located below the transverse cutting assembly.

[0060] In the figure: 1, base; 11, second slide rail; 2, working platform; 21, interlayer; 22, first cylinder; 23, fixing assembly; 231, fixing frame; 232, pressure block; 2321, pressure block body; 2322, flexible block; 24, first slide groove; 25, positioning plate; 3, mounting frame; 31, mounting plate; 32, connecting piece; 41, second cylinder; 42, first mounting seat; 43, first cutting knife; 431, first fixing seat; 432, first slot; 433, first blade; 44, first mounting groove; 45, first screw rod; 46. ​​First moving block; 47. First motor; 51. Third cylinder; 52. Second mounting seat; 53. Second cutting knife; 531. Fixed plate; 532. Second fixing seat; 533. Second slot; 534. Second blade; 54. Second mounting slot; 55. Second screw rod; 56. Second moving block; 57. Slide rod; 58. Slider; 59. Second motor; 61. Box body; 62. Third screw rod; 63. Third moving block; 64. First slide rail; 65. Second slide slot; 66. Third motor; 7. Fourth cylinder; 8. Heat insulation sheet. DETAILED DESCRIPTION

[0061] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0062] See also Figure 1-11 , an embodiment provided by the utility model:

[0063] A heat insulation sheet cutting device comprises a base 1, a working platform 2, a mounting frame 3, a longitudinal cutting component, a transverse cutting component, and a third driving component;

[0064] A sandwich layer 21 is provided at the bottom of the working platform 2, and a plurality of first cylinders 22 are provided in the sandwich layer 21. In this embodiment, four first cylinders 22 are provided, which are respectively provided at the four corners of the sandwich layer 21. The telescopic end of the first cylinder 22 movably penetrates the working platform 2 and is fixedly connected with a fixing component 23. The fixing component 23 can contact or separate with the heat insulation sheet 8 under the drive of the first cylinder 22.

[0065] The mounting frame 3 includes a mounting plate 31, which is located above the working platform 2. The mounting plate 31 is fixedly connected to the base 1 through a plurality of connecting members 32. In this embodiment, the connecting member 32 is a vertical plate, and two vertical plates are provided.

[0066] The longitudinal cutting assembly includes a plurality of second cylinders 41. In the present embodiment, two second cylinders 41 are provided. The second cylinder 41 is fixedly connected to the top of the mounting plate 31. The telescopic end of the second cylinder 41 movably penetrates the mounting plate 31 and is fixedly connected to the first mounting seat 42. A first cutting knife 43 is provided at the bottom of the first mounting seat 42. The first cutting knife 43 is transmission-connected to the first driving assembly. The first driving assembly drives the first cutting knife 43 to reciprocate along the Y-axis direction. The first cutting knife 43 can contact or separate from the working platform 2 under the drive of the second cylinder 41.

[0067] The transverse cutting assembly is arranged on one side of the longitudinal cutting assembly, and the transverse cutting assembly includes a plurality of third cylinders 51. In the present embodiment, two third cylinders 51 are provided, and the third cylinders 51 are fixedly connected to the top of the mounting plate 31. The telescopic end of the third cylinder 51 movably penetrates the mounting plate 31 and is fixedly connected to the second mounting seat 52. A second cutting knife 53 is arranged at the bottom of the second mounting seat 52. The second cutting knife 53 is transmission-connected to the second driving assembly. The second driving assembly drives the second cutting knife 53 to reciprocate along the X-axis direction. The second cutting knife 53 can contact or separate from the working platform 2 under the drive of the third cylinder 51.

[0068] The third driving assembly is in driving connection with the working platform 2 and drives the working platform 2 to reciprocate along the X-axis direction below the longitudinal cutting assembly and the transverse cutting assembly.

[0069] The first cylinder 22 drives the fixing assembly 23 to press on the heat insulation sheet 8, thereby fixing the heat insulation sheet 8 to prevent the heat insulation sheet 8 from shifting during the cutting process. The second cylinder 41 drives the first mounting seat 42 to move downward, the first mounting seat 42 drives the first cutting knife 43 to move downward, and the first driving assembly drives the first cutting knife 43 to move along the Y-axis direction, thereby completing the longitudinal cutting of the heat insulation sheet 8; the third driving assembly drives the working platform 2 to move along the X-axis direction to the bottom of the transverse cutting assembly, the third cylinder 51 drives the second mounting seat 52 to move downward, the second mounting seat 52 drives the second cutting knife 53 to move downward, and the second driving assembly drives the second cutting knife 53 to move along the X-axis direction, thereby completing the transverse cutting of the heat insulation sheet 8.

[0070] Specifically, the fixing assembly 23 includes a fixing frame 231 and a plurality of pressing blocks 232 ; the fixing frame 231 is fixedly connected to the top of the telescopic end of the first cylinder 22 ; the pressing blocks 232 are fixedly connected to the inner wall of the fixing frame 231 , and the pressing blocks 232 contact or separate from the heat insulation sheet 8 under the drive of the first cylinder 22 .

[0071] Specifically, the pressing block 232 includes a pressing block body 2321 and a flexible block 2322; the flexible block 2322 is fixedly connected to the bottom of the pressing block body 2321. The flexible block 2322 is made of rubber. The flexible block 2322 is provided to prevent the pressing block 232 from damaging the heat insulation sheet 8 during the process of fixing the heat insulation sheet 8.

[0072] Specifically, a first mounting groove 44 is provided at the bottom of the first mounting seat 42;

[0073] The first driving assembly includes a first screw rod 45, a first moving block 46, and a first motor 47; the first screw rod 45 is rotatably connected between the two side walls of the first mounting groove 44; the first moving block 46 is threadedly sleeved on the outside of the first screw rod 45, and the first moving block 46 is fixedly connected to the first cutting knife 43; the first motor 47 is fixedly connected to the outer wall of the first mounting seat 42, and the output shaft of the first motor 47 passes through the side wall of the first mounting seat 42 and is fixedly connected to one end of the first screw rod 45. The first motor 47 drives the first screw rod 45 to rotate, so that the first moving block 46 moves along the first screw rod 45, and then drives the first cutting knife 43 to move along the first screw rod 45.

[0074] Specifically, a second mounting groove 54 is provided at the bottom end of the second mounting seat 52;

[0075] The second driving assembly includes a second screw rod 55, a second moving block 56, a sliding bar 57, a slider 58, and a second motor 59; the second screw rod 55 is rotatably connected between the two side walls of the second mounting groove 54; the second moving block 56 is sleeved on the outside of the second screw rod 55 by a thread; the sliding bar 57 is fixedly connected between the two side walls of the second mounting groove 54; the slider 58 is sleeved on the outside of the slider 57, and the slider 58 is slidably connected to the slider 57; the second motor 59 is fixedly connected to the outer wall of the second mounting seat 52, and the output shaft of the second motor 59 passes through the side wall of the second mounting seat 52 and is fixedly connected to one end of the second screw rod 55; wherein the second cutting knife 53 is fixedly connected to the second moving block 56 and the slider 58. The second motor 59 drives the second screw rod 55 to rotate, so that the second moving block 56 moves along the second screw rod 55, thereby driving the second cutting knife 53 to move along the second screw rod 55.

[0076] Specifically, the third driving assembly includes a box body 61 with an opening at the top, a third screw rod 62, a third moving block 63, and a third motor 66; the third screw rod 62 is rotatably connected between the two side walls of the box body 61; the third moving block 63 is threadedly sleeved on the outside of the third screw rod 62, and the third moving block 63 is fixedly connected to the bottom of the working platform 2; the third motor 66 is fixedly connected to the outer wall of the box body 61, and the output shaft of the third motor 66 passes through the side wall of the box body 61 and is fixedly connected to the third screw rod 62; wherein, the first slide groove 24 is provided on the two opposite outer walls of the working platform 2, and the first slide rail 64 that slides with the first slide groove 24 is provided on the inner wall of the box body 61. The third motor 66 drives the third screw rod 62 to rotate, so that the third moving block 63 moves along the third screw rod 62, and the third moving block 63 drives the working platform 2 to move along the third screw rod 62, so that the working platform 2 can reciprocate under the longitudinal cutting assembly and the transverse cutting assembly. Through the cooperation of the first slide groove 24 and the first slide rail 64, the working platform 2 is more stable during the movement.

[0077] Specifically, the fourth cylinder 7 is fixedly connected to the base 1, and the telescopic end of the fourth cylinder 7 is fixedly connected to the outer wall of the box body 61. Two second slide grooves 65 are provided at the bottom of the box body 61, and the second slide rail 11 that slidably cooperates with the second slide groove 65 is provided on the base 1. Driven by the fourth cylinder 7, the box body 61 can move along the second slide rail 11 to the outside of the mounting frame 3. The fourth cylinder 7 pushes the box body 61 to move along the second slide rail 11, and the box body 61 drives the working platform 2 to move, thereby pushing the working platform 2 to the outside of the mounting frame 3, so that the operator can place the heat insulation sheet 8 on the working platform 2 conveniently.

[0078] Specifically, four positioning plates 25 are fixedly connected to the top of the working platform 2. The positioning plates 25 are L-shaped structures. When the insulation sheet 8 is placed on the working platform 2, the four positioning plates 25 are respectively located at the four corners of the insulation sheet 8. The positioning plates 25 are used to position the four corners of the insulation sheet 8.

[0079] Specifically, the first cutting knife 43 includes a first fixed seat 431 and a first blade 433 ; the first fixed seat 431 is fixedly connected to the bottom of the first moving block 46 , and a first slot 432 is provided at the bottom of the first fixed seat 431 ; the first blade 433 is fixedly connected in the first slot 432 .

[0080] Specifically, the second cutting knife 53 includes a fixed plate 531, a plurality of second fixed seats 532, and a plurality of second blades 534; the two ends of the top of the fixed plate 531 are fixedly connected to the bottom ends of the second moving block 56 and the sliding block 58 respectively; the second fixed seat 532 is fixedly connected to the bottom end of the fixed plate 531, and a second slot 533 is provided at the bottom end of the second fixed seat 532; the second blade 534 is fixedly connected in the second slot 533.

[0081] The pressing block 232 is located in a position that avoids the area that the first blade 433 and the second blade 534 pass through during cutting.

[0082] Working principle: Start the fourth cylinder 7, the fourth cylinder 7 pushes the box body 61 along the second slide rail 11, places the heat insulation sheet 8 on the working platform 2, starts the first cylinder 22, the first cylinder 22 drives the fixed frame 231 to move downward, the fixed frame 231 drives the pressure block 232 to move, so that the pressure block 232 is pressed on the heat insulation sheet 8; then the box body 61 is driven to reset by the fourth cylinder 7, the second cylinder 41 drives the first mounting seat 42 to move downward so that the first blade 433 contacts the working platform 2, starts the first motor 47, the first motor 47 drives the first screw rod 45 to rotate, so that the first moving block 46 moves along the first screw rod 45, thereby driving the first cutting knife 43 to move along the first screw rod 45, and then making The first blade 433 cuts the thermal insulation sheet 8 longitudinally; then the third motor 66 is started, and the third motor 66 drives the third screw rod 62 to move, so that the third moving block 63 moves along the third screw rod 62, so that the working platform 2 moves along the third screw rod 62 to the bottom of the transverse cutting assembly; the third cylinder 51 is started, and the third cylinder 51 drives the second mounting seat 52 to move downward so that the second blade 534 contacts the working platform 2, and the second motor 59 is started, and the second motor 59 drives the second screw rod 55 to rotate, so that the second moving block 56 moves along the second screw rod 55, and the second moving block 56 drives the second cutting knife 53 to move along the second screw rod 55, so that the second blade 534 cuts the thermal insulation sheet 8 transversely.

[0083] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

Claims

1. A heat insulation sheet cutting device, characterized in that: include: Base; A working platform, wherein a mezzanine is provided at the bottom of the working platform, wherein a plurality of first cylinders are provided in the mezzanine, wherein telescopic ends of the first cylinders movably penetrate the working platform and are fixedly connected with a fixing component, wherein the fixing component can contact or separate from the heat insulation sheet under the driving of the first cylinders; A mounting frame, the mounting frame comprising a mounting plate, the mounting plate is located above the working platform, and the mounting plate is fixedly connected to the base through a plurality of connecting members; A longitudinal cutting assembly, the longitudinal cutting assembly includes a plurality of second cylinders, the second cylinders are fixedly connected to the top of the mounting plate, the telescopic end of the second cylinder movably penetrates the mounting plate and is fixedly connected to the first mounting seat, a first cutting knife is provided at the bottom of the first mounting seat, the first cutting knife is transmission-connected to the first driving assembly, and the first driving assembly drives the first cutting knife to reciprocate along the Y-axis direction; A transverse cutting assembly, the transverse cutting assembly is arranged on one side of the longitudinal cutting assembly, the transverse cutting assembly includes a plurality of third cylinders, the third cylinders are fixedly connected to the top of the mounting plate, the telescopic end of the third cylinder movably penetrates the mounting plate and is fixedly connected to a second mounting seat, a second cutting knife is arranged at the bottom of the second mounting seat, the second cutting knife is transmission-connected to a second driving assembly, and the second driving assembly drives the second cutting knife to reciprocate along the X-axis direction; The third driving assembly is connected to the working platform in a transmission manner and drives the working platform to reciprocate along the X-axis direction below the longitudinal cutting assembly and the transverse cutting assembly.

2. The heat insulation sheet cutting device according to claim 1, characterized in that: The fixing assembly comprises: A fixed frame, the fixed frame being fixedly connected to the top of the telescopic end of the first cylinder; A plurality of pressing blocks are fixedly connected to the inner wall of the fixing frame, and the pressing blocks are contacted with or separated from the heat insulation sheet under the driving of the first cylinder.

3. The heat insulation sheet cutting device according to claim 2, characterized in that: The pressing block comprises: Press block body; The flexible block is fixedly connected to the bottom of the pressing block body.

4. The heat insulation sheet cutting device according to claim 1, characterized in that: A first mounting groove is provided at the bottom of the first mounting seat; The first driving assembly comprises: A first screw rod, the first screw rod being rotatably connected between two side walls of the first mounting groove; A first moving block, wherein the first moving block is sleeved on the outside of the first screw rod through a thread, and the first moving block is fixedly connected to the first cutting knife; The first motor is fixedly connected to the outer wall of the first mounting seat, and the output shaft of the first motor passes through the side wall of the first mounting seat and is fixedly connected to one end of the first screw rod.

5. The heat insulation sheet cutting device according to claim 1, characterized in that: A second mounting groove is provided at the bottom end of the second mounting seat; The second driving assembly comprises: A second screw rod, the second screw rod being rotatably connected between two side walls of the second mounting groove; A second moving block, the second moving block is sleeved on the outside of the second screw rod through a thread; A slide bar, the slide bar being fixedly connected between two side walls of the second mounting groove; A slider, the slider is sleeved on the outside of the slide rod, and the slider is slidably connected to the slide rod; A second motor, wherein the second motor is fixedly connected to the outer wall of the second mounting seat, and an output shaft of the second motor passes through the side wall of the second mounting seat and is fixedly connected to one end of the second screw rod; Wherein, the second cutting knife is fixedly connected to the second moving block and the sliding block.

6. The heat insulation sheet cutting device according to claim 1, characterized in that: The third driving assembly comprises: Box with top opening: A third screw rod, the third screw rod is rotatably connected between the two side walls of the box body; A third moving block, the third moving block is sleeved on the outside of the third screw rod through a thread, and the third moving block is fixedly connected to the bottom end of the working platform; A third motor, the third motor is fixedly connected to the outer wall of the box body, and the output shaft of the third motor passes through the side wall of the box body and is fixedly connected to the third screw rod; Wherein, first sliding grooves are arranged on two opposite outer walls of the working platform, and first sliding rails which are slidably matched with the first sliding grooves are arranged on the inner wall of the box body.

7. The heat insulation sheet cutting device according to claim 6, characterized in that: A fourth cylinder is fixedly connected to the base, a telescopic end of the fourth cylinder is fixedly connected to the outer wall of the box body, two second slide grooves are arranged at the bottom of the box body, and a second slide rail slidably matched with the second slide grooves is arranged on the base.

8. The heat insulation sheet cutting device according to claim 1, characterized in that: Four positioning plates are fixedly connected to the top of the working platform. The positioning plates are L-shaped structures and are used to position the four corners of the thermal insulation sheet.

9. The heat insulation sheet cutting device according to claim 1, characterized in that: The first cutting knife comprises: A first fixing seat, the first fixing seat is fixedly connected to the bottom of the first moving block, and a first slot is provided at the bottom of the first fixing seat; A first blade is fixedly connected in the first slot.

10. The heat insulation sheet cutting device according to claim 1, characterized in that: The second cutting knife comprises: A fixed plate, the top ends of which are respectively fixedly connected to the second moving block and the bottom ends of the sliding block; A plurality of second fixing seats, wherein the second fixing seats are fixedly connected to the bottom end of the fixing plate, and a second slot is provided at the bottom end of the second fixing seat; A plurality of second blades are fixedly connected in the second slots.

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