Length cutting device for foamed board

Abstract

The utility model belongs to PVC foamed board production equipment technical field discloses foamed board's fixed length cutting device, including movable frame, cutting platform, platen, lifting cylinder, cutting mechanism, drive mechanism, protective cover, first light shield, first photoelectric proximity switch and controller. The utility model discloses the protective cover is set up above the cutting platform, and the first light shield that can be lifted upwards is set up at the board export department of the protective cover bottom, thereby can prevent the hand of production personnel to stretch into the protective cover, and the utility model discloses the first photoelectric proximity switch detects the first light shield, can realize the shutdown of device when the hand of production personnel is stretched into the protective cover in violation of the law fast, thereby protects the production personnel that the hand is stretched into the platen below in violation of the law, further reduces the security risk of foamed board fixed length cutting device.

Description

Technical Field

[0001] This utility model relates to the technical field of PVC foam board production equipment, and in particular to a fixed-length cutting device for foam boards. Background Technology

[0002] After the molding and cooling processes, PVC foam boards need to be cut to a fixed length according to the pre-set specifications such as the final product. Chinese patent document CN216372512U discloses a fixed-length cutting device for PVC foam boards, including a conveyor frame composed of a cutting platform, a cutting mechanism, and a pressure plate mechanism. The pressure plate mechanism presses the foam board firmly onto the cutting platform, preventing the board from moving freely on both sides of the cut before separation. This ensures accurate cutting of the foam board and also prevents workers in the workshop from coming into contact with the cutting blades during operation.

[0003] Although existing foam board length-cutting devices are equipped with emergency stop buttons to stop the machine promptly in case of abnormal situations (such as foam boards deviating from the normal conveying direction or material piling up on the cutting platform), production personnel often forget to press the emergency stop button in the urgency of the situation. Instead, they may reach their hands under the pressure plate mechanism to handle the abnormality without following safety regulations. In this case, the cutting and pressure plate mechanisms may still operate normally, posing a significant safety hazard. Utility Model Content

[0004] The purpose of this utility model is to provide a fixed-length cutting device for foamed boards, which aims to further reduce the safety hazards that exist when using the fixed-length cutting device.

[0005] To achieve the above objectives, the solution provided by this utility model is as follows: The foam board fixed-length cutting device includes a movable frame, a cutting platform mounted on the movable frame, a pressure plate vertically movable above the cutting platform, a lifting cylinder connected to the pressure plate, a cutting mechanism mounted on the movable frame, and a drive mechanism for driving the cutting mechanism to move horizontally; the lifting cylinder and the drive mechanism are both electrically connected to a controller; it also includes a protective cover, a first light shield, and a first photoelectric proximity switch; The protective cover is fixedly mounted above the cutting platform, and a board inlet and a board outlet are formed between the bottom of the protective cover and the cutting platform, respectively; the first light-shielding plate is rotatably mounted on the bottom of the protective cover, and the first light-shielding plate is located at the board outlet; the first photoelectric proximity switch is fixedly mounted on the outside of the movable frame, and the sensing head of the first photoelectric proximity switch faces the inside of the first light-shielding plate; the controller is electrically connected to the first photoelectric proximity switch. Optionally, the foam board fixed-length cutting device further includes an alarm, which is fixedly installed on the outside of the movable frame and electrically connected to the controller.

[0006] Optionally, the alarm is an audible and visual alarm.

[0007] Optionally, the foam board fixed-length cutting device further includes a second light-shielding plate and a second photoelectric proximity switch; the second light-shielding plate is located at the board inlet and is rotatably connected to the bottom of the protective cover; the second photoelectric proximity switch is fixedly installed on the outside of the movable frame and the sensing head of the second photoelectric proximity switch faces the inside of the second light-shielding plate; the controller is electrically connected to the second photoelectric proximity switch.

[0008] Optionally, both the first and second light-shielding plates are connected to the bottom hinges on both sides of the protective cover.

[0009] Optionally, the first light-shielding plate and the second light-shielding plate have the same structure, both including a vertically arranged light-shielding part, a horizontally arranged blocking part at the upper end of the light-shielding part, and a horizontally arranged bending part at the lower end of the light-shielding part. The blocking part is located above the first photoelectric proximity switch or the second photoelectric proximity switch, and the bending part extends to the outside of the light-shielding part.

[0010] Optionally, the cutting platform is provided with transmission frames on both the front and rear sides; the transmission frame includes two crossbars arranged along the length of the foam board and multiple transmission rollers arranged side by side and rotating between the two crossbars. The cutting platform is also fixed with support platforms on both the front and rear sides; the support platforms are parallel to the transmission rollers and are located between the crossbars; the top of the support platforms is inclined downward toward the outside of the cutting platform.

[0011] Optionally, the protective cover is inverted U-shaped and is detachably connected to the movable frame.

[0012] Beneficial effects: This utility model provides a fixed-length cutting device for foamed boards. By setting a protective cover above the cutting platform and a first light-shielding plate that can be lifted upwards at the board outlet at the bottom of the protective cover, it can prevent production personnel from putting their hands into the protective cover. Moreover, this utility model uses a first photoelectric proximity switch to detect the first light-shielding plate, which can quickly stop the device when a production personnel illegally put their hands into the protective cover, thereby protecting the production personnel who illegally put their hands under the pressure plate and further reducing the safety hazards of the fixed-length cutting device for foamed boards. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of the fixed-length cutting device for foamed boards provided by this utility model. Figure 1 .

[0014] Figure 2 yes Figure 1 Enlarged view of section A.

[0015] Figure 3 yes Figure 1 Enlarged view of section B.

[0016] Figure 4 yes Figure 1 Enlarged view of section C.

[0017] Figure 5 This is a schematic diagram of the structure of the fixed-length cutting device for foamed boards provided by this utility model. Figure 2 .

[0018] Figure 6 This is a schematic diagram of the structure of the fixed-length cutting device for foamed boards provided by this utility model. Figure 3 .

[0019] Figure 7 This is a schematic diagram of the structure of the fixed-length cutting device for foamed boards provided by this utility model. Figure 4 .

[0020] Explanation of icon numbers: 1-Movable frame; 2-Cutting platform; 3-Pressure plate; 4-Lifting cylinder; 5-Cutting mechanism; 6-Drive mechanism; 7-Protective cover; 8-Sheet material inlet; 9-Sheet material outlet; 10a-First light-shielding plate; 10b-Second light-shielding plate; 101-Light-shielding part; 102-Shielding part; 103-Bending part; 11-First photoelectric proximity switch; 12-Alarm; 13-Second photoelectric proximity switch; 14-Transmission frame; 141-Crossbar; 142-Transmission roller; 15-Support platform. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in the embodiments of this utility model are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0023] It should also be noted that when a component is referred to as "fixed to" or "attached to" another component, it can be directly on the other component or may have an intervening component present. When a component is referred to as "connected to" another component, it can be directly connected to the other component or may have an intervening component present.

[0024] Furthermore, the use of terms such as "first" and "second" in this utility model is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed by this utility model.

[0025] Please see Figures 1 to 7 This utility model provides a fixed-length cutting device for PVC foam boards, including a movable frame 1 that can move along the conveying direction of the PVC foam board during cutting, a cutting platform 2 mounted on the movable frame 1, two pressure plates 3 vertically movable above the cutting platform 2, a lifting cylinder 4 fixedly mounted above the cutting platform 2 and driven by the pressure plates 3, a cutting mechanism 5 mounted on the movable frame 1, and a drive mechanism 6 for driving the cutting mechanism 5 to move horizontally back and forth along the width direction of the foam board. Both the lifting cylinder 4 and the drive mechanism 6 are electrically connected to a controller. It should be noted that the above structure is prior art; for specific usage of the fixed-length cutting device, please refer to Chinese patent document CN216372512U.

[0026] Furthermore, the foam board fixed-length cutting device also includes a protective cover 7, a first light-shielding plate 10a, and a first photoelectric proximity switch 11.

[0027] The protective cover 7 is fixedly mounted above the cutting platform 2. A board inlet 8 and a board outlet 9 are formed between the two bottoms of the protective cover 7, parallel to the width direction of the foam board, and the cutting platform 2, respectively. The pressure plate 3 and the lifting cylinder 4 are both located inside the protective cover 7. The first light-shielding plate 10a is rotatably mounted at the bottom of the protective cover 7 along the width direction of the foam board, and is located at the board outlet 9. A gap is left between the bottom of the first light-shielding plate 10a and the cutting platform 2 to allow the foam board to pass through. The first photoelectric proximity switch 11 is fixedly mounted on the outside of the movable frame 1, with its sensing head facing the inside of the first light-shielding plate 10a. The controller is electrically connected to the first photoelectric proximity switch 11. During normal production, the foam board can pass under the first light-shielding plate 10a. Therefore, the first light-shielding plate 10a can be detected by the first photoelectric proximity switch 11. When the first light-shielding plate 10a is lifted upwards, the light emitted by the first photoelectric proximity switch 11 cannot be reflected back to the first photoelectric proximity switch 11. At this time, the controller will quickly control the lifting cylinder 4 and the drive mechanism 6 to stop working based on the signal change of the first photoelectric proximity switch 11, thereby quickly stopping the device. Therefore, the first light-shielding plate 10a not only prevents production personnel from putting their hands into the protective cover 7, but also protects production personnel who illegally put their hands under the pressure plate 3 through the detection of the first photoelectric proximity switch 11, thereby further reducing the safety hazards of the foam board fixed-length cutting device.

[0028] like Figure 1 and Figure 7 As shown, in an optional embodiment, the foam board fixed-length cutting device further includes an alarm 12, which is fixedly mounted on the outside of the movable frame 1 and electrically connected to the controller. While controlling the lifting cylinder 4 and the drive mechanism 6 to stop, the controller can trigger the alarm 12, which serves two purposes: firstly, to warn production personnel who violate operating procedures, enhancing their safety awareness; and secondly, to inform other production personnel of potential production abnormalities or safety issues on-site.

[0029] In an optional embodiment, the alarm 12 is an audible and visual alarm. Compared to a single type of alarm 12, the audible and visual alarm 12 allows workers who cannot hear the sound due to ambient noise to visually detect safety abnormalities, and also allows workers whose vision is obstructed and who cannot see the light to perceive danger through hearing. This dual warning method ensures that surrounding production personnel can quickly and accurately know that there are safety hazards or production abnormalities on site.

[0030] like Figure 1 , Figure 3 as well as Figure 6 As shown, in an optional embodiment, the foam board length-cutting device further includes a second light-shielding plate 10b and a second photoelectric proximity switch 13; the second light-shielding plate 10b is located at the board inlet 8 and is rotatably connected to the bottom of the protective cover 7; the second photoelectric proximity switch 13 is fixedly mounted on the outside of the movable frame 1, and the sensing head of the second photoelectric proximity switch 13 faces the inside of the second light-shielding plate 10b; the controller is electrically connected to the second photoelectric proximity switch 13. In this embodiment, the second light-shielding plate 10b and the second photoelectric proximity switch 13, together with the first light-shielding plate 10a and the first photoelectric proximity switch 11 at the board outlet 9, form bidirectional protection, reducing safety hazards at the board inlet 8 and improving the overall safety of the device.

[0031] As an example, the first photoelectric proximity switch 11 and the second photoelectric proximity switch 13 may be Beforing diffuse reflection proximity switches.

[0032] like Figure 1 and Figure 4 As shown, in an optional embodiment, both the first light-shielding plate 10a and the second light-shielding plate 10b are respectively connected to the bottom hinges on both sides of the protective cover 7. The hinge connection allows the light-shielding plates to rotate freely in the vertical direction, so that the light-shielding plates can be easily lifted up or lowered as needed.

[0033] In an optional embodiment, the first light-shielding plate 10a and the second light-shielding plate 10b have the same structure, both including a vertically arranged light-shielding part 101, a horizontally arranged blocking part 102 at the upper end of the light-shielding part 101, and a horizontally arranged bending part 103 at the lower end of the light-shielding part 101. The blocking part 102 is located above the first photoelectric proximity switch 11 or the second photoelectric proximity switch 13, and the bending part 103 extends to the outside of the light-shielding part 101. In this embodiment, the vertically arranged light-shielding part 101 can form a basic barrier at the board inlet 8 and the board outlet 9, preventing the production personnel's hands from reaching into the protective cover 7; the horizontal blocking part 102 is located above the corresponding photoelectric proximity switch, which can enhance the protection of the photoelectric proximity switch and reduce false triggering. The setting of the bending part 103 allows the lower end of the blocking part 102 to transition smoothly, so that the production personnel's hands will not be cut when the first light-shielding plate 10a and the second light-shielding plate 10b are lifted upwards.

[0034] like Figure 1 , Figure 5 as well as Figure 6 As shown ( Figure 5 (The protective cover 7 is not shown). In an optional embodiment, the front and rear sides of the cutting platform 2 ( Figure 1 , Figure 5 The direction indicated by the arrow is forward. A transmission frame 14 is provided on both sides of the cutting platform 2. The transmission frame 14 includes two horizontal bars 141 arranged along the length of the foam board, and multiple transmission rollers 142 arranged side-by-side and rotatably between the two horizontal bars 141. In this embodiment, the transmission frames 14 located on the front and rear sides of the cutting platform 2 can be connected to the foam board width-fixed cutting device and the foam board stacking device, respectively. This allows the foam board after width-fixed cutting to be pulled onto the cutting platform 2 for length-fixed cutting, and the cut foam board can then be pushed to the stacking device by the uncut foam board. The stacking device can be the stacking device disclosed in CN201821646766.7.

[0035] Furthermore, support platforms 15 are fixedly provided on the front and rear surfaces of the cutting platform 2; the support platforms 15 are parallel to the transmission rollers 142 and are located between the crossbars 141; the top of the support platforms 15 is inclined downwards towards the outside of the cutting platform 2. Since the transmission rollers 142 cannot be installed on the front and rear surfaces near the cutting platform 2, the support platforms 15 can provide a certain degree of support and guidance for the foam board, preventing the foam board from sagging due to its own weight and ensuring the conveying stability of the foam board.

[0036] like Figure 1 As shown, in an optional embodiment, the protective cover 7 is inverted U-shaped, which can adapt to the layout of the cutting platform 2 and the upper pressure plate 3, lifting cylinder 4, and other components. While covering the protective area, it does not affect the normal conveying of the foamed board from the bottom board inlet 8 and board outlet 9. Furthermore, the protective cover 7 is detachably connected to the movable frame 1, which facilitates the later inspection, maintenance, or replacement of components such as the cutting mechanism 5, pressure plate 3, and lifting cylinder 4 inside the protective cover 7. As an example, the protective cover 7 can be fixed to the movable frame 1 by threaded connectors.

[0037] The above description is only a preferred embodiment of the present utility model and does not limit the patent scope of the present utility model. All equivalent structural transformations made under the inventive concept of the present utility model using the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.

Claims

1. A fixed-length cutting device for foamed board, comprising a movable frame (1), a cutting platform (2) mounted on the movable frame (1), a pressure plate (3) vertically mounted above the cutting platform (2), a lifting cylinder (4) connected to the pressure plate (3), a cutting mechanism (5) mounted on the movable frame (1), and a driving mechanism (6) for driving the cutting mechanism (5) to move horizontally; wherein the lifting cylinder (4) and the driving mechanism (6) are both electrically connected to a controller; characterized in that, It also includes a protective cover (7), a first light shield (10a), and a first photoelectric proximity switch (11); the protective cover (7) is fixedly mounted above the cutting platform (2), and a board inlet (8) and a board outlet (9) are formed between the bottom of the protective cover (7) and the cutting platform (2); the first light shield (10a) is rotatably mounted on the bottom of the protective cover (7), and the first light shield (10a) is located at the board outlet (9); the first photoelectric proximity switch (11) is fixedly mounted on the outside of the movable frame (1), and the sensing head of the first photoelectric proximity switch (11) faces the inside of the first light shield (10a); the controller is electrically connected to the first photoelectric proximity switch (11).

2. The fixed-length cutting device for foamed board according to claim 1, characterized in that, It also includes an alarm (12), which is fixedly installed on the outside of the movable frame (1) and electrically connected to the controller.

3. The fixed-length cutting device for foamed board according to claim 2, characterized in that, The alarm (12) is an audible and visual alarm.

4. The fixed-length cutting device for foamed board according to claim 1, characterized in that, It also includes a second light shield (10b) and a second photoelectric proximity switch (13); the second light shield (10b) is located at the plate inlet (8) and is rotatably connected to the bottom of the protective cover (7); the second photoelectric proximity switch (13) is fixedly installed on the outside of the movable frame (1) and the sensing head of the second photoelectric proximity switch (13) faces the inside of the second light shield (10b); the controller is electrically connected to the second photoelectric proximity switch (13).

5. The fixed-length cutting device for foamed board according to claim 4, characterized in that, The first light shield (10a) and the second light shield (10b) are respectively connected to the bottom hinges on both sides of the protective cover (7).

6. The fixed-length cutting device for foamed board according to claim 5, characterized in that, The first light-shielding plate (10a) and the second light-shielding plate (10b) have the same structure, both including a vertically arranged light-shielding part (101), a horizontally arranged blocking part (102) at the upper end of the light-shielding part (101), and a horizontally arranged bending part (103) at the lower end of the light-shielding part (101). The blocking part (102) is located above the first photoelectric proximity switch (11) or above the second photoelectric proximity switch (13), and the bending part (103) extends to the outside of the light-shielding part (101).

7. The fixed-length cutting device for foamed board according to claim 1, characterized in that, The cutting platform (2) is provided with transmission frames (14) on both the front and rear sides; the transmission frame (14) includes two crossbars (141) arranged along the length of the foam board, and multiple transmission rollers (142) arranged side by side and rotating between the two crossbars (141). The front and rear surfaces of the cutting platform (2) are also fixed with support platforms (15); the support platforms (15) are parallel to the transmission rollers (142) and the support platforms (15) are located between the crossbars (141); the top of the support platforms (15) is inclined downward toward the outside of the cutting platform (2).

8. The fixed-length cutting device for foamed board according to claim 1, characterized in that, The protective cover (7) is inverted U-shaped and is detachably connected to the movable frame (1).

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