A cutting device for polystyrene foam board production and a method of using the same

Abstract

The present application relates to the technical field of foam board cutting, and particularly relates to a cutting equipment for polystyrene foam board production, which comprises a feeding conveyor and a discharging conveyor, a first support is fixed between the feeding conveyor and the discharging conveyor, a cutting slot is formed in the upper portion of the first support, a second support is fixed to the upper portion of the first support, a mounting seat is movably arranged in the second support, a cutting blade is mounted on the mounting seat, the lower portion of the cutting blade is located in the cutting slot, a driving mechanism for driving the mounting seat to move horizontally is arranged in the second support, a presser is arranged on the two sides of the cutting blade, the presser comprises a shell, a plurality of rollers are rotatably arranged in the shell, a presser belt is sleeved on the rollers, a third support is fixed on the discharging conveyor, and a distance measuring mechanism is arranged on the third support. The present application realizes the pressing on the cutting edge, guarantees the smoothness of the cutting edge, rapidly detects the length of the cut foam board, and removes unqualified products.

Description

Technical Field

[0001] The present invention relates to the technical field of foam board cutting, in particular to a cutting device for producing polystyrene foam boards and a use method thereof. Background Art

[0002] Polystyrene foam boards are mainly used for building walls, roof insulation, composite board insulation, cold storage, air conditioning, vehicle, ship insulation and heat insulation, floor heating, decoration and carving, etc. During processing, they need to be cut according to the specific application location, and the cutting is generally carried out continuously on a conveyor belt.

[0003] The existing conveyor belt cutting method has certain defects, mainly including the following two points:

[0004] First, when cutting, the cutting blade is in direct contact with the foam board. The rapid rotation of the cutting blade during cutting can easily cause notches at the edge of the foam board, resulting in an uneven edge.

[0005] Second, conveyor belt cutting mainly relies on the conveyor belt to push the foam board to the specified width when cutting at a specified width. It is easy to push too much or not push it far enough, causing the width deviation of the foam board after cutting to exceed the error value. The current cutting equipment does not have a distance measuring mechanism, and manual measurement is required later, which is inefficient. Summary of the Invention

[0006] In view of this, the purpose of the present invention is to provide a cutting device for the production of polystyrene foam boards and a method of using the same, so as to solve the problems of uneven cutting edges and lack of distance measurement function of existing cutting devices.

[0007] Based on the above objectives, the present invention provides a cutting device for producing polystyrene foam boards and a method for using the same.

[0008] A cutting device for producing polystyrene foam boards, comprising a feed conveyor and a discharging conveyor, wherein a first bracket is fixed between the feed conveyor and the discharging conveyor, a slit is opened on the upper part of the first bracket, a second bracket is fixed on the upper part of the first bracket, a mounting seat is movably provided in the second bracket, and a cutting blade is installed on the mounting seat, and the lower part of the cutting blade is located in the slit, a driving mechanism for driving the mounting seat to move horizontally is provided in the second bracket, a clamping device is provided on both sides of the cutting blade, the clamping device comprises an outer shell, a plurality of rollers are rotatably provided in the outer shell, a clamping belt is provided on the plurality of rollers, a buffer assembly is provided between the outer shell and the mounting seat, a third bracket is fixed on the discharging conveyor, and a distance measuring mechanism is provided on the third bracket.

[0009] Furthermore, the driving mechanism includes a screw rod rotatably arranged in the second bracket, the screw rod passes through the mounting seat and is threadedly connected to it, a first motor is fixed to one side of the second bracket, the first motor is used to drive the screw rod to rotate, and a plurality of third guide columns are fixed in the second bracket, and the third guide columns all pass through the mounting seat and are slidably connected to it.

[0010] Furthermore, a second motor is fixed on one side of the mounting seat, a mounting cavity is opened on one side of the mounting seat, the output end of the second motor extends into the mounting cavity and is fixed with a first synchronous wheel, an intermediate shaft passes through the middle of the cutting blade, and one end of the intermediate shaft extends into the mounting cavity and is fixed with a second synchronous wheel, and a synchronous belt is provided between the first synchronous wheel and the second synchronous wheel.

[0011] Furthermore, the buffer assembly includes a fixed sleeve fixed on both sides of the mounting seat, a sliding rod is slidably provided at the lower end of the fixed sleeve, a buffer spring is provided in the fixed sleeve, one end of the buffer spring is pressed against the upper end of the sliding rod, and the two outer shells are respectively rotatably connected to the two sliding rods, and a torsion spring is provided at the rotational connection between the outer shell and the sliding rod.

[0012] Furthermore, the ranging mechanism includes a ranging plate movably arranged in a third bracket, an electric push rod is fixed on the upper part of the third bracket, and the electric push rod is used to push the ranging plate downward, a first detection strip and a second detection strip are provided on one side of the bottom of the ranging plate, a plurality of first sliding pins are fixed on the upper part of the first detection strip, and a plurality of second sliding pins are fixed on the upper part of the second detection strip, two cross bars are provided on one side of the upper part of the ranging plate, the upper ends of the first sliding pins pass through the ranging plate and are fixed on one of the cross bars, and the upper ends of the second sliding pins pass through the ranging plate and are fixed on the other cross bar, two mounting blocks are fixed on one side of the upper part of the ranging plate, a first touch switch and a second touch switch are respectively installed on the bottom of the two mounting blocks, the first touch switch and the second touch switch are both connected to a controller, and the horizontal height of the first detection bar is lower than that of the second detection bar.

[0013] Furthermore, first guide posts are fixed on both sides of the upper portion of the ranging plate, and the first guide posts pass through the third bracket and are slidably connected thereto.

[0014] Furthermore, the ranging plate is divided into a fixed part and an adjusting part, and the first detection strip and the second detection strip are both installed on the adjusting part. A threaded column is rotatably provided on one side of the adjusting part, and the threaded column passes through the fixed part and is threadedly connected to it. The fixed part is "L"-shaped, and a handwheel is installed on the end of the threaded column away from the adjusting part.

[0015] Furthermore, a plurality of second guide posts are fixed to one side of the adjusting portion, and the other ends of the second guide posts are slidably disposed in the fixing portion.

[0016] A method for using a cutting device for producing polystyrene foam boards, comprising the following steps:

[0017] Step one: adjust the distance between the adjusting part and the fixing part through the threaded column, so that the distance between the second detection strip and the side of the fixing part is less than the length of the foam board to be cut, the foam board is conveyed from the feeding conveyor to the discharging conveyor through the first support, after advancing the specified length, the conveying is stopped, the second motor is controlled to drive the cutting blade to start, and the first motor is driven to move the mounting seat transversely through the lead screw to cut the foam board;

[0018] Step two: when the cutting blade contacts and cuts one end of the foam board, the two sides of the pressing belt enter the upper part of the foam board and are located on the two sides of the cutting blade, and the buffer spring in the fixing sleeve tightly presses the pressing belt on the foam board and moves synchronously with the cutting blade;

[0019] Step three: the foam board after cutting is continuously conveyed on the discharging conveyor until it is blocked by one end of the L-shaped fixing part, at this time the electric push rod is started to push the distance plate to move downward as a whole;

[0020] Step four: the electric push rod first pushes the distance plate to move downward by a first distance, if the second micro switch is triggered and the first micro switch is not triggered, it indicates that the length of the cut foam board meets the standard, if the first micro switch is triggered and the second micro switch is not triggered when moving downward by the first distance, it indicates that the length of the cut foam board is too long, if the second micro switch and the first micro switch are not triggered when moving downward by the first distance, the electric push rod continues to push and move downward to a second distance, at this time the first detection strip contacts the upper part of the discharging conveyor and triggers the first micro switch, at this time it indicates that the length of the cut foam board is too small.

[0021] The beneficial effects of the present application are:

[0022] In the present application, the pressing device is arranged on the two sides of the cutting blade, so that the foam board is conveyed from the feeding conveyor to the discharging conveyor through the first support, and after conveying to the specified length, the conveying is stopped, the second motor is controlled to drive the cutting blade to start, and the first motor is driven to move the mounting seat transversely to cut the foam board, when the cutting blade contacts and cuts one end of the foam board, the two sides of the inclined pressing belt extrude one side of the foam board and then enter the upper part of the foam board, at this time the two pressing belts are located on the two sides of the cutting blade and tightly press on both sides of the cutting edge, the buffer spring in the fixing sleeve tightly presses the pressing belt on the foam board, the pressing belt runs on the foam board and moves synchronously with the cutting blade, the pressing on the cutting edge is realized, the gap caused by the rapid rotation of the cutting disc is avoided, and the smoothness of the cutting edge is ensured.

[0023] The present invention, through the provided distance measuring mechanism, allows the foam board after cutting to be transported to one end of the fixed part on the discharging conveyor for blocking, and the electric push rod is started to push the distance measuring plate to move down a first distance as a whole. If the second touch switch is triggered and the first touch switch is not triggered, the length of the foam board after cutting meets the standard. If the first touch switch is triggered and the second touch switch is not triggered when the foam board is moved down by the first distance, the foam board after cutting is too long. If the second touch switch and the first touch switch are not triggered when the foam board is moved down by the first distance, the electric push rod continues to push the foam board down to the second distance. At this time, the first detection bar contacts the upper part of the discharging conveyor and triggers the first touch switch. At this time, it indicates that the length of the foam board after cutting is too small, thereby realizing rapid detection of the length of the foam board after cutting and eliminating unqualified foam boards. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only for the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0025] Figure 1 is a three-dimensional schematic diagram of an embodiment of the present invention;

[0026] Figure 2 This is a three-dimensional schematic diagram of a first bracket and a second bracket according to an embodiment of the present invention;

[0027] Figure 3 A three-dimensional schematic diagram of a cutting sheet according to an embodiment of the present invention;

[0028] Figure 4 A schematic plan cross-sectional view of a mounting base according to an embodiment of the present invention;

[0029] Figure 5 is a three-dimensional schematic diagram of a compactor according to an embodiment of the present invention;

[0030] Figure 6 This is a three-dimensional schematic diagram of a distance measuring mechanism according to an embodiment of the present invention;

[0031] Figure 7 Schematic diagram of a distance measuring mechanism according to an embodiment of the present invention.

[0032] The following are marked in the figure:

[0033] 1. Feed conveyor; 2. Discharge conveyor; 3. First bracket; 4. Second bracket; 5. Third bracket; 6. First motor; 7. Distance measuring plate; 71. Fixing part; 72. Adjusting part; 8. Electric push rod; 9. First guide column; 10. Threaded column; 11. Second guide column; 12. Mounting block; 13. Cross bar; 15. First detection strip; 16. Second detection strip; 18. First touch switch; 19. First sliding pin; 20. Second sliding pin; 21. Cutting disc; 22. Screw; 23. Third guide column; 24. Mounting seat; 25. Fixing sleeve; 26. Sliding rod; 27. Housing; 28. Clamping belt; 29. ​​Synchronous belt; 30. Second motor; 31. Roller; 32. Second touch switch. DETAILED DESCRIPTION

[0034] In order to make the objectives, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to specific embodiments.

[0035] It should be noted that, unless otherwise defined, the technical or scientific terms used in the present invention should have the usual meanings understood by people with ordinary skills in the field to which the present invention belongs. The "first", "second" and similar words used in the present invention do not indicate any order, quantity or importance, but are only used to distinguish different components. "Include" or "comprise" and similar words mean that the elements or objects appearing before the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects. "Connect" or "connected" and similar words are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the object being described changes, the relative positional relationship may also change accordingly.

[0036] Please see the attached Figure 1 -Attached Figure 7The cutting mechanism 21 of the present invention is the same as the cutting mechanism 22. The cutting mechanism 21 of the present invention is a kind of cutting mechanism 22.

[0037] The driving mechanism includes a screw rod 22 rotatably arranged in the second bracket 4, the screw rod 22 passes through the mounting seat 24 and is threadedly connected thereto, and a first motor 6 is fixed to one side of the second bracket 4. The first motor 6 is used to drive the screw rod 22 to rotate, and a plurality of third guide columns 23 are fixed in the second bracket 4, and the third guide columns 23 all pass through the mounting seat 24 and are slidably connected thereto. A second motor 30 is fixed on one side of the mounting seat 24, and a mounting cavity is opened on one side of the mounting seat 24. The output end of the second motor 30 extends into the mounting cavity and is fixed with a first synchronous wheel. An intermediate shaft passes through the middle of the cutting blade 21, and one end of the intermediate shaft extends into the mounting cavity and is fixed with a second synchronous wheel. A synchronous belt 29 is provided between the first synchronous wheel and the second synchronous wheel. The second motor 30 is controlled to drive the cutting blade 21 to start through the synchronous belt 29, and at the same time, the first motor 6 is driven to drive the mounting seat 24 to move horizontally through the screw rod 22 to cut the foam board.

[0038] The buffer assembly includes a fixing sleeve 25 fixed on both sides of the mounting seat 24. A slide rod 26 is slidably provided at the lower end of the fixing sleeve 25. A buffer spring is provided in the fixing sleeve 25. One end of the buffer spring is pressed against the upper end of the slide rod 26. The two outer shells 27 are respectively rotatably connected to the two slide rods 26. The rotational connection between the outer shell 27 and the slide rod 26 is provided with a torsion spring. The compressor is in contact with the foam board and is squeezed upward by the foam board. At this time, the slide rod 26 squeezes the buffer spring upward, and the compressor rotates to a horizontal position and is close to the foam board.

[0039] The distance measuring mechanism includes a distance measuring plate 7 movably arranged in the third bracket 5, an electric push rod 8 is fixed on the upper part of the third bracket 5, and the electric push rod 8 is used to push the distance measuring plate 7 downward, and first guide columns 9 are fixed on both sides of the upper part of the distance measuring plate 7, and the first guide columns 9 pass through the third bracket 5 and are slidably connected thereto, a first detection strip 15 and a second detection strip 16 are provided on one side of the bottom of the distance measuring plate 7, a plurality of first sliding pins 19 are fixed on the upper part of the first detection strip 15, and a plurality of second sliding pins 20 are fixed on the upper part of the second detection strip 16, two cross bars 13 are provided on one side of the upper part of the distance measuring plate 7, the upper ends of the first sliding pins 19 pass through the distance measuring plate 7 and are fixed on one of the cross bars 13, the upper ends of the second sliding pins 20 pass through the distance measuring plate 7 and are fixed on the other cross bar 13, and two mounting blocks 12 are fixed on one side of the upper part of the distance measuring plate 7, and the bottoms of the two mounting blocks 12 are respectively installed There are a first touch switch 18 and a second touch switch 32, both of which are connected to a controller. The horizontal height of the first detection bar 15 is lower than that of the second detection bar 16. The electric push rod 8 first pushes the ranging plate 7 down a first distance. If the second touch switch 32 is triggered and the first touch switch 18 is not triggered, it means that the length of the cut foam board meets the standard. If the first touch switch 18 is triggered and the second touch switch 32 is not triggered when moving down the first distance, it means that the cut foam board is too long. If the second touch switch 32 and the first touch switch 18 are not triggered when moving down the first distance, the electric push rod 8 continues to push down to the second distance. At this time, the first detection bar 15 contacts the upper part of the discharge conveyor 2, triggering the first touch switch 18, which means that the length of the cut foam board is too small.

[0040] The ranging plate 7 is divided into a fixed portion 71 and an adjusting portion 72. The first detection strip 15 and the second detection strip 16 are both installed on the adjusting portion 72. A threaded column 10 is rotatably provided on one side of the adjusting portion 72, and the threaded column 10 passes through the fixed portion 71 and is threadedly connected thereto. The fixed portion 71 is "L"-shaped, and a handwheel is installed on the end of the threaded column 10 away from the adjusting portion 72. A plurality of second guide columns 11 are fixed on one side of the adjusting portion 72, and the other ends of the second guide columns 11 are all slidably arranged in the fixed portion 71. The handwheel is held to drive the threaded column 10 to rotate and adjust the distance between the adjusting portion 72 and the fixed portion 71, so that the distance between one side of the second detection strip 16 and one side of the fixed portion 71 is less than the length that the foam board needs to be cut.

[0041] Working principle: first turn the hand wheel to drive the threaded column 10 to rotate and adjust the distance between the adjustment part 72 and the fixing part 71, so that the distance between one side of the second detection strip 16 and the other side of the fixing part 71 is less than the length that the foam board needs to be cut, and the distance between the first detection strip 15 and the second detection strip 16 is less than the standard error of the foam board cutting. The foam board is transported from the feed conveyor 1 to the discharging conveyor 2 through the first bracket 3. After the specified length is advanced, the conveying is stopped, and the second motor 30 is controlled to drive the cutting blade 21 to start, and at the same time drive the first motor 6 to drive the mounting seat 24 to move horizontally through the screw rod 22 to cut the foam board. When the cutting blade 21 contacts one end of the foam board for cutting, the compression belts 28 on both sides thereof enter the upper part of the foam board and are located on both sides of the cutting blade 21. The buffer spring in the fixing sleeve 25 presses the compression belt 28 tightly against the foam board and follows The cutting blade 21 moves synchronously, and the foam board after cutting continues to be conveyed on the discharge conveyor 2 until it is blocked by one end of the L-shaped fixing part 71. At this time, the electric push rod 8 starts to push the ranging plate 7 downward as a whole. The electric push rod 8 first pushes the ranging plate 7 down a first distance. If the second touch switch 32 is triggered and the first touch switch 18 is not triggered, it indicates that the length of the cut foam board meets the standard. If the first touch switch 18 is triggered and the second touch switch 32 is not triggered when moving down the first distance, it indicates that the cut foam board is too long. If the second touch switch 32 and the first touch switch 18 are not triggered when moving down the first distance, the electric push rod 8 continues to push down to the second distance. At this time, the first detection strip 15 contacts the upper part of the discharge conveyor 2, triggering the first touch switch 18, which indicates that the length of the cut foam board is too small.

[0042] The present invention is intended to cover all such substitutions, modifications and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A cutting device for producing polystyrene foam boards, comprising a feed conveyor (1) and a discharge conveyor (2), characterized in that: A first bracket (3) is fixed between the feed conveyor (1) and the discharge conveyor (2), a slit is provided on the upper part of the first bracket (3), a second bracket (4) is fixed on the upper part of the first bracket (3), a mounting seat (24) is movably provided in the second bracket (4), and a cutting blade (21) is installed on the mounting seat (24), the lower part of the cutting blade (21) is located in the slit, a driving mechanism for driving the mounting seat (24) to move horizontally is provided in the second bracket (4), a clamping device is provided on both sides of the cutting blade (21), the clamping device includes a shell (27), a plurality of rollers (31) are rotatably provided in the shell (27), a clamping belt (28) is provided on the plurality of rollers (31), a buffer assembly is provided between the shell (27) and the mounting seat (24), a third bracket (5) is fixed on the discharge conveyor (2), and a distance measuring mechanism is provided on the third bracket (5); The distance measuring mechanism comprises a distance measuring plate (7) movably arranged in a third bracket (5); an electric push rod (8) is fixed on the upper part of the third bracket (5); the electric push rod (8) is used to push the distance measuring plate (7) downward; a first detection bar (15) and a second detection bar (16) are provided on one side of the bottom of the distance measuring plate (7); a plurality of first sliding pins (19) are fixed on the upper part of the first detection bar (15); a plurality of second sliding pins (20) are fixed on the upper part of the second detection bar (16); two cross bars (13) are provided on one side of the upper part of the distance measuring plate (7); the first sliding pin (1 9) The upper ends of the second sliding pins (20) pass through the distance measuring plate (7) and are fixed on one of the cross bars (13). The upper ends of the second sliding pins (20) pass through the distance measuring plate (7) and are fixed on the other cross bar (13). Two mounting blocks (12) are fixed on one side of the upper part of the distance measuring plate (7). The bottoms of the two mounting blocks (12) are respectively installed with a first tact switch (18) and a second tact switch (32). The first tact switch (18) and the second tact switch (32) are both connected to a controller. The horizontal height of the first detection bar (15) is lower than that of the second detection bar (16).

2. A cutting device for producing polystyrene foam boards according to claim 1, characterized in that: The driving mechanism includes a screw rod (22) rotatably arranged in the second bracket (4), the screw rod (22) passing through the mounting seat (24) and being threadedly connected thereto, a first motor (6) being fixed on one side of the second bracket (4), the first motor (6) being used to drive the screw rod (22) to rotate, a plurality of third guide columns (23) being fixed in the second bracket (4), and the third guide columns (23) all passing through the mounting seat (24) and being slidably connected thereto.

3. The cutting device for producing polystyrene foam boards according to claim 1, characterized in that: A second motor (30) is fixed on one side of the mounting seat (24), a mounting cavity is opened on one side of the mounting seat (24), an output end of the second motor (30) extends into the mounting cavity and is fixed with a first synchronous wheel, an intermediate shaft passes through the middle of the cutting blade (21), and one end of the intermediate shaft extends into the mounting cavity and is fixed with a second synchronous wheel, and a synchronous belt (29) is sleeved between the first synchronous wheel and the second synchronous wheel.

4. The cutting device for producing polystyrene foam boards according to claim 1, characterized in that: The buffer assembly includes a fixed sleeve (25) fixed on both sides of the mounting seat (24), a slide rod (26) is slidably provided at the lower end of the fixed sleeve (25), a buffer spring is provided in the fixed sleeve (25), one end of the buffer spring is pressed against the upper end of the slide rod (26), two shells (27) are respectively rotatably connected to the two slide rods (26), and a torsion spring is provided at the rotation connection between the shell (27) and the slide rod (26).

5. The cutting device for producing polystyrene foam boards according to claim 1, characterized in that: First guide columns (9) are fixed on both sides of the upper portion of the distance measuring plate (7), and the first guide columns (9) pass through the third bracket (5) and are slidably connected thereto.

6. The cutting device for producing polystyrene foam boards according to claim 1, characterized in that: The distance measuring plate (7) is divided into a fixed portion (71) and an adjusting portion (72). The first detection strip (15) and the second detection strip (16) are both mounted on the adjusting portion (72). A threaded column (10) is rotatably provided on one side of the adjusting portion (72), and the threaded column (10) passes through the fixed portion (71) and is threadedly connected thereto. The fixed portion (71) is L-shaped.

7. A cutting device for producing polystyrene foam boards according to claim 6, characterized in that: A hand wheel is mounted on one end of the threaded column (10) away from the adjusting portion (72).

8. The cutting device for producing polystyrene foam boards according to claim 6, characterized in that: A plurality of second guide columns (11) are fixed to one side of the adjusting portion (72), and the other ends of the second guide columns (11) are slidably disposed in the fixing portion (71).

9. A method for using a cutting device for producing polystyrene foam boards according to any one of claims 1 to 8, characterized in that: The following steps are involved: Step 1: Adjust the distance between the adjusting portion (72) and the fixing portion (71) through the threaded column (10) so that the distance between one side of the second detection strip (16) and one side of the fixing portion (71) is less than the length of the foam board to be cut, and the distance between the first detection strip (15) and the second detection strip (16) is less than the standard error of the foam board cutting. The foam board is conveyed from the feed conveyor (1) through the first bracket (3) to the discharge conveyor (2). After the foam board is conveyed to the specified length, the conveying is stopped, and the second motor (30) is controlled to drive the cutting blade (21) to start, and at the same time, the first motor (6) is driven to drive the mounting base (24) to move horizontally through the screw rod (22) to cut the foam board. Step 2: When the cutting blade (21) contacts one end of the foam board for cutting, the compression belts (28) on both sides thereof enter the upper portion of the foam board and are located on both sides of the cutting blade (21). The buffer spring in the fixing sleeve (25) presses the compression belts (28) tightly against the foam board and moves synchronously with the cutting blade (21); Step 3: After the cutting is completed, the foam board continues to be conveyed on the discharge conveyor (2) until it is blocked by one end of the L-shaped fixed portion (71). At this time, the electric push rod (8) is started to push the distance measuring plate (7) downward as a whole; Step 4: The electric push rod (8) first pushes the distance measuring plate (7) downward by a first distance. If the second touch switch (32) is triggered and the first touch switch (18) is not triggered, it indicates that the length of the foam board after cutting meets the standard. If the first touch switch (18) is triggered and the second touch switch (32) is not triggered when the foam board is moved downward by the first distance, it indicates that the foam board after cutting is too long. If the second touch switch (32) and the first touch switch (18) are not triggered when the foam board is moved downward by the first distance, the electric push rod (8) continues to push the distance measuring plate downward to the second distance. At this time, the first detection strip (15) contacts the upper part of the discharge conveyor (2), triggering the first touch switch (18). At this time, it indicates that the length of the foam board after cutting is too short.

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