A device for grooving the back of a board

Abstract

The application discloses a plate back slotting device, which comprises two parallel first vertical plates and second vertical plates, upper pressing roller assemblies and lower supporting roller assemblies are arranged between the first vertical plates and the second vertical plates, the upper pressing roller assemblies and the lower supporting roller assemblies cooperate to transmit the plate, a slotting roller is arranged in the lower supporting roller assembly, a cutter is arranged on the slotting roller, and the cutter is used for slotting the plate, first swing plates and second swing plates are arranged at two ends of the slotting roller respectively, one end of the first swing plate is connected with the first vertical plate through a shaft, one end of the second swing plate is connected with the second vertical plate through a shaft, the other ends of the first swing plate and the second swing plate are connected with power assemblies, and the power assemblies drive the first swing plate and the second swing plate to swing synchronously. The plate back slotting device can slot the plate without damaging the edge structure in the continuous movement of the plate, and greatly improves the production efficiency.

Description

Technical Field

[0001] This invention relates to the field of sheet metal processing equipment design, and specifically to a sheet metal back grooving device. Background Technology

[0002] Wood-plastic composite (WPC) and SPC / PVC flooring offer better stability and resistance to deformation compared to wood flooring, and are also waterproof and moisture-proof, leading to their widespread adoption. However, due to the materials themselves, they are significantly heavier than wood flooring, increasing the difficulty of transportation and storage. Furthermore, WPC and SPC / PVC flooring tend to be harder underfoot and have a less robust texture, both of which limit their development.

[0003] By grooving the back of the floorboard, the weight of the floorboard can be effectively reduced. Grooving also reduces the amount of raw materials used, and the debris left after grooving can be directly recycled, greatly reducing the production cost.

[0004] Many existing methods involve modifying the extruder mold to create channels at the bottom during production. However, these channels are continuous, which significantly affects the overall strength. Therefore, only very shallow channels can be produced, resulting in poor improvements in weight and cost-effectiveness.

[0005] Some equipment uses post-grooving, but it can only process floorboards one by one, significantly reducing processing efficiency and making it unsuitable for batch processing. Specifically, the equipment positions the floorboard, then a screw-driven lifting mechanism drives the cutter to cut. After cutting, the lifting mechanism resets the cutter, the floorboard is released and unloaded. Throughout the cutting and grooving process, the floorboard needs to be fixed, and only a certain size groove can be cut at a time. When the grooving length increases, the above cutting process needs to be repeated multiple times to meet the requirements.

[0006] Therefore, there is an urgent need for a processing equipment capable of continuous grooving to meet the needs of high-efficiency production. Summary of the Invention

[0007] The technical problem to be solved by the present invention is to provide a grooving device for the back of a sheet metal, which can perform grooving without damaging the edge structure during continuous movement of the sheet metal.

[0008] To solve the above-mentioned technical problems, the present invention provides a plate back grooving device, including two parallel first vertical plates and second vertical plates, an upper pressure roller assembly and a lower support roller assembly are arranged between the first vertical plates and the second vertical plates, and the upper pressure roller assembly and the lower support roller assembly cooperate to transport the plate.

[0009] The lower support roller assembly is provided with a grooving roller, and the grooving roller is provided with a cutting tool, which is used to groove the plate.

[0010] The grooving roller is provided with a first swing plate and a second swing plate at both ends. One end of the first swing plate is connected to the first vertical plate shaft, and one end of the second swing plate is connected to the second vertical plate shaft. The other ends of the first swing plate and the second swing plate are both connected to the power component. The power component drives the first swing plate and the second swing plate to swing synchronously.

[0011] Furthermore, a pull-out frame is provided between the first swing plate and the second swing plate. The pull-out frame includes a guide sleeve and a pull-out core rod. One end of the pull-out core rod is set inside the guide sleeve, and the other end is fixed to the connecting frame. Both ends of the guide sleeve are fixedly connected to the first swing plate and the second swing plate, respectively. The connecting frame is detachably connected to the first swing plate. A mounting bearing seat is provided between one end of the slotted roller and the connecting frame, and the other end is connected to the drive assembly.

[0012] Furthermore, a plurality of abutment wheels are provided on one end of the pull-out mandrel located inside the guide sleeve. The abutment wheels are used to suspend the pull-out mandrel within the guide sleeve. Two bearing rollers are provided on the first swing plate below the pull-out mandrel. The bearing rollers cooperate with the abutment wheels to keep the pull-out mandrel moving axially.

[0013] Furthermore, the connecting frame includes a fixed support base plate, on which a rotating sleeve and a rotating shaft are provided. One end of the rotating shaft is connected to a mounting bearing seat, and the rotating sleeve and the rotating shaft cooperate to drive the mounting bearing seat to rotate in the horizontal direction. The driving component includes a rotary motor, and an anti-rotation structure is provided between the output end of the rotary motor and the end of the slotted roller.

[0014] The anti-rotation structure is a spline connection structure. A first conical surface is provided on the output end of the rotary motor, and a second conical surface is provided in the end of the slotted roller corresponding to the first conical surface. The first conical surface and the second conical surface cooperate and abut against each other.

[0015] Furthermore, both the first and second swing plates are connected to corresponding power components. The power components include a drive motor, and a cam bearing is provided on the output shaft of the drive motor. The cam bearing is connected to one end of a connecting arm, and the other end of the connecting arm is connected to the corresponding first or second swing plate via a first rotating shaft.

[0016] Furthermore, a shock absorber is also provided between the output shaft and the first rotating shaft.

[0017] Furthermore, the output shaft is connected to the U-shaped frame via two support bearings, and a guide rail is provided between the U-shaped frame and the corresponding first or second vertical plate. A screw jack is provided at the bottom of the U-shaped frame.

[0018] Furthermore, a waste recycling device is provided below the grooving roller. The waste recycling device includes a first horn cover, a second horn cover, and a bottom box arranged from top to bottom. The large end of the first horn cover faces the lower roller assembly, the small end of the first horn cover extends into the large end of the second horn cover, and the small end of the second horn cover extends into the top opening of the bottom box. A dust collection mechanism is horizontally connected to the bottom box.

[0019] Furthermore, an air inlet gap is provided between the outer wall of the small end of the first horn cover and the inner wall of the large end of the second horn cover. The small end of the second horn cover is provided with a long baffle plate and a short baffle plate. The short baffle plate is located on one side of the bottom box of the dust collection mechanism, and the long baffle plate is located on the side of the bottom box away from the dust collection mechanism, and they cooperate with the bottom of the bottom box and the side wall to form an L-shaped flow channel.

[0020] Furthermore, the upper pressure roller assembly includes multiple pressure rollers arranged in parallel, each pressure roller having a swing beam above it. Both ends of the swing beam are provided with inverted V-shaped connectors. One bottom end of the inverted V-shaped connector is connected to the pressure roller shaft, and the other bottom end of the inverted V-shaped connector is connected to the corresponding first or second vertical plate shaft. The multiple swing beams are connected by a linkage mechanism. One of the swing beams is provided with a first swing arm, which is shaft-connected to one end of a push-pull cylinder. The other end of the push-pull cylinder is shaft-connected to the beam frame between the first and second vertical plates.

[0021] Furthermore, the linkage mechanism includes a screw and multiple second swing arms, which are fixedly mounted on the swing beam in pairs. A buffer linkage plate is axially connected between two second swing arms. The screw passes through the buffer linkage plate and is provided with a buffer spring between it and each buffer linkage plate.

[0022] The beneficial effects of this invention are:

[0023] 1. By employing a oscillating motion to move the cutter up and down during the horizontal feeding of the sheet material, continuous, uninterrupted movement of the sheet is achieved while simultaneously grooving the bottom. The grooving can be elongated or segmented, catering to various design requirements. This also effectively avoids the problem of grooving through both ends, ensuring the overall strength of the sheet material. This results in continuous processing and significantly improves production efficiency.

[0024] 2. The pull-out method can effectively remove the cutting tool to the outside of the equipment, thereby enabling convenient tool replacement, significantly reducing the difficulty of maintenance and repair, while also ensuring production efficiency.

[0025] 3. The dust collection mechanism is reasonably designed, which effectively prevents the problem of waste clogging during large-scale preparation, improves the stability of equipment operation, and enhances environmental protection performance. Attached Figure Description

[0026] Figure 1This is a schematic diagram of the overall structure of the present invention.

[0027] Figure 2 This is a schematic diagram of the first swing plate side structure of the present invention;

[0028] Figure 3 This is a schematic diagram of the second swing plate part of the present invention;

[0029] Figure 4 This is a schematic diagram of the power component structure of the present invention;

[0030] Figure 5 This is a schematic cross-sectional view of the waste recycling section of the present invention;

[0031] Figure 6 This is a schematic diagram of the structure of the grooved roller of the present invention after it has been pulled out;

[0032] Figure 7 This is a schematic diagram of the structure of the grooving roller of the present invention after it has been pulled out and rotated open.

[0033] Figure 8 This is a schematic diagram of the spline connection part of the present invention;

[0034] Figure 9 This is a first-view structural schematic diagram of the upper pressure roller assembly of the present invention;

[0035] Figure 10 This is a second-view structural schematic diagram of the upper pressure roller assembly of the present invention;

[0036] Figure 11 This is a diagram of the surface structure of the product after slotting according to the present invention; Explanation of the numbers in the diagram: 1. First upright plate; 2. Second upright plate; 3. Upper pressure roller assembly; 4. Lower support roller assembly; 5. Plate; 6. Grooving roller; 7. First swing plate; 8. Second swing plate; 11. Guide sleeve; 12. Pull-out mandrel; 13. Connecting frame; 14. Mounting bearing seat; 15. Abutment wheel; 16. Bearing support roller; 17. Drive motor; 18. Sealing plate; 19. Connecting arm; 20. Shock absorber; 21. U-shaped frame; 22. Guide rail; 23. Screw jack; 24. First horn cover; 25. Second horn cover; 26. Base box; 7. Dust collection mechanism; 28. Long baffle plate; 29. ​​Short baffle plate; 31. Drive assembly; 32. Output shaft; 33. Transmission shaft; 111. Output end; 112. Spline connection structure; 113. First conical surface; 114. Fixed support base plate; 115. Rotating sleeve; 116. Rotating shaft; 117. Pressure roller; 118. Swing beam; 119. Inverted V-shaped connector; 120. Linkage mechanism; 121. First swing arm; 122. Push-pull cylinder; 123. Screw; 124. Second swing arm; 125. Buffer linkage plate; 126. Buffer spring. Detailed Implementation

[0037] The present invention will be further described below with reference to the accompanying drawings and specific embodiments, so that those skilled in the art can better understand and implement the present invention. However, the embodiments described are not intended to limit the present invention.

[0038] Reference Figures 1 to 4 As shown, one embodiment of the back-side grooving device for the sheet metal of the present invention includes two parallel first vertical plates 1 and second vertical plates 2. An upper pressure roller assembly 3 and a lower support roller assembly 4 are arranged between the first vertical plates and the second vertical plates. The upper pressure roller assembly and the lower support roller assembly cooperate to transport the sheet metal 5. The lower support roller assembly provides a reference for the transport and movement of the sheet metal. After the sheet metal is transported into the device, it is pressed down by the upper pressure roller assembly, and at the same time, the sheet metal is transported into the device by rotation.

[0039] To facilitate better grooving and waste collection, this application employs grooving from the bottom of the board, allowing waste to fall downwards, which is more efficient. Therefore, a grooving roller 6 is installed within the lower support roller assembly. The grooving roller is equipped with a cutter, which can be a circular serrated blade. The cutter can be locked onto the grooving roller, and multiple blades can be arranged at intervals as needed. The cutter is used to groove the board; the grooving roller rotates, causing the cutter to rotate and contact the board to perform grooving.

[0040] During the rotation of the cutting tool, it needs to feed to achieve grooving. Therefore, a first swing plate 7 and a second swing plate 8 are respectively set at both ends of the grooving roller. One end of the first swing plate is connected to the shaft of the first vertical plate, and one end of the second swing plate is connected to the shaft of the second vertical plate. The other ends of the first and second swing plates are both connected to the power assembly. The power assembly drives the first and second swing plates to swing synchronously. Specifically, the grooving roller is positioned between the shaft connection position and the driving fulcrum of the power assembly. The power assembly pushes the first and second swing plates upward, and they rotate along their shaft connection position, i.e., rotate upward. The grooving roller then makes an arc-shaped movement along the shaft connection position, i.e., swings, to achieve feed. When grooving is not needed, the power assembly resets, which can pull the first and second swing plates to rotate downward. At the same time, due to the weight of the structure, it is effectively reset, achieving retraction.

[0041] In actual use, the sheet material is supported and conveyed by the upper pressure roller assembly and the lower support roller assembly. When the sheet material moves to the grooving position, the grooving roller rotates, which drives the cutter to rotate. At the same time, the power assembly drives the cutter to feed. The sheet material continues to move without stopping. During the movement, the cutter rotates and cuts the material to generate waste. After the grooving size is in place, the power assembly drives the cutter to retract. The sheet material continues to be conveyed until it is discharged.

[0042] The sheet metal can be continuously fed without interruption throughout the process; it simply moves continuously. The cutting tool advances and retracts according to the sheet's position to create grooves, thus significantly improving production efficiency. Continuous or intermittent grooving can be created on the sheet metal, with different grooving requirements met simply by controlling the timing of the advance and retraction.

[0043] During use, cutting tools will wear out, and worn-out cutting tools need to be replaced. Therefore, this application also discloses a structure that facilitates tool replacement. Specifically, a pull-out frame is provided between the first swing plate and the second swing plate. The pull-out frame includes a guide sleeve 11 and a pull-out core rod 12. One end of the pull-out core rod is set inside the guide sleeve, and the other end is fixed to the connecting frame 13. The two ends of the guide sleeve are fixedly connected to the first swing plate and the second swing plate, respectively. The connecting frame is detachably connected to the first swing plate. A mounting bearing seat 14 is provided between one end of the grooving roller and the connecting frame, and the other end is connected to the drive assembly 31 for driving the grooving roller to rotate.

[0044] The mandrel can be pulled out from the guide sleeve. Simultaneously, the connecting frame and the grooving roller are pulled out from between the first and second vertical plates, placing the cutting tool outside the equipment. This avoids manual entry into the confined space to change the tool, facilitating operation. A push-pull handle can be provided on the connecting frame for easy manual pushing. As the grooving roller is pulled out, the guide sleeve maintains the axial movement of the mandrel, separating the grooving roller from the drive assembly. The grooving roller, mounting bearing seat, connecting frame, and mandrel move together.

[0045] Because the grooving roller and bearing housing have a certain weight, a simple nested structure would result in difficulties in pushing and pulling due to the large contact area and high friction. Therefore, in the above structure, multiple abutment wheels 15 are provided on one end of the pull-out mandrel located inside the guide sleeve. The pull-out mandrel can be a rectangular tube, and the guide sleeve is a circular tube. There are four abutment wheels, which are respectively installed on the four faces of the end of the rectangular tube. The four abutment wheels are used to suspend the pull-out mandrel inside the guide sleeve. During movement, the four abutment wheels contact the inner wall of the guide sleeve to achieve rolling friction, which significantly reduces friction. At the same time, two bearing rollers 16 are provided on the first swing plate below the pull-out mandrel. The bearing rollers cooperate with the abutment wheels to keep the pull-out mandrel moving axially. Because the guide sleeve is circular, there is a rotation issue after the connecting frame is disassembled and unlocked from the first swing plate. Therefore, the rectangular tube is placed at an angle, forming a rhomboid structure. Two support rollers abut against two planes on the lower part of the rectangular tube, which can support the outside of the pull-out mandrel and also have an anti-rotation effect. During the movement, the pull-out mandrel comes into contact with the support rollers, resulting in rolling friction. The support rollers and the abutment rollers cooperate to form a two-point support, ensuring that there is no surface contact between the pull-out mandrel and the guide sleeve. Of course, to better maintain the overall stability during pull-out, the number of support rollers can be four, with each support roller corresponding to one plane of the rectangular tube, achieving effective limiting.

[0046] The guide sleeve can extend outward a certain distance on one side of the second swing plate, meaning the length of the pull-out mandrel must be greater than the length of the grooving roller, allowing the grooving roller to be fully pulled outward. (Refer to...) Figure 6 The image shows the grooving roller being pulled out of the equipment. Simultaneously, after being fully pulled out, there is sufficient distance between the supporting roller and the abutting roller to ensure that one end remains cantilevered, reducing the load on the components. A sealing plate 18 can be installed on the guide sleeve located on the side of the first swing plate. The opening of the sealing plate is consistent with the cross-sectional structure of the pull-out mandrel. During extraction, the sealing plate prevents the abutting roller from detaching from the guide sleeve, providing a protective effect.

[0047] Reference Figure 7As shown, after the grooving roller is pulled out, its end is located on one side of the first swing plate, and the gap between them is small, which poses a challenge for tool replacement. Therefore, a first connecting frame is designed. The first connecting frame includes a fixed support base plate 114, which is locked to the end of the pull-out mandrel. A rotating sleeve 115 and a rotating shaft 116 are provided on the fixed support base plate, and the two are axially connected. One end of the rotating shaft is connected to a mounting bearing seat. The rotating sleeve and the rotating shaft cooperate to drive the mounting bearing seat to rotate horizontally, so that the grooving roller can be rotated horizontally away from the first swing plate, thereby making the space unrestricted when changing tools and facilitating operation. After rotating to the tool replacement position, it can be positioned by a self-locking structure. Specifically, a fixing screw can be provided on the rotating sleeve, which is threaded to the annular wall of the rotating sleeve. By rotating, the end of the fixing screw abuts against the rotating shaft and locks in place, thereby preventing the rotating shaft from rotating.

[0048] The aforementioned drive assembly includes a rotary motor, and an anti-rotation structure is provided between the output end 111 of the rotary motor and the end of the grooving roller. The anti-rotation structure is a spline connection structure 112. A first conical surface 113 is provided on the output end of the rotary motor, and a second conical surface is provided inside the grooving roller end corresponding to the first conical surface. The first and second conical surfaces abut against each other. During the pushing process, the grooving roller is centered through the conical surface structure, and simultaneously connected to the output end through the spline connection structure. The two are easily separated, facilitating the extraction of the grooving roller. Simultaneously, the rotation of the rotary motor drives the grooving roller to rotate. (Refer to...) Figure 8 As shown.

[0049] For the aforementioned power components, independent power component connections can be provided for both the first and second swing plates. The power components include a drive motor 17, with a cam bearing (not shown in the figure; a cam and bearing mating structure, the cam is fixedly connected to the output shaft, rotation of the output shaft drives the cam to rotate, and the cam drives the bearing to yaw). The cam bearing is connected to one end of the connecting arm 19, and the other end of the connecting arm is connected to the corresponding first or second swing plate via a first rotating shaft. The drive motor, in conjunction with a reducer, outputs power to rotate the cam. The cam and connecting arm are connected via the bearing, meaning the connecting arm is not rotated directly, but it will displace due to the rotation of the cam. When the cam's convex part rotates upwards, the end of the connecting arm is pushed upwards; when the cam's convex part rotates downwards, the connecting arm is moved downwards. Taking the first swing plate as an example, one end of the first swing plate is shaft-connected to the first vertical plate and is fixed in position, only able to rotate. The other end is shaft-connected to the connecting arm. When the connecting arm displaces, it can drive the first swing plate to rotate upwards or downwards along its shaft connection point. Since the groove depth of the sheet metal is not very deep, the cams described above are sufficient to meet the requirements.

[0050] During the feed and retraction processes, the feed will vibrate due to resistance, and the overall weight will also be applied to the bearings, which can easily damage the ball bearings and lead to poor feed dimensions. Therefore, a shock absorber 20 is installed between the output shaft and the first rotating shaft. The shock absorber can effectively unload the force generated by the weight and vibration, ensuring the service life of the overall structure. The shock absorber can be a spring shock absorber, a rubber shock absorber, etc.

[0051] During the aforementioned feed process, both the cam rotation angle and the initial position of the connecting arm affect the feed depth. Adjusting the feed depth by controlling the cam rotation angle is only suitable for fine-tuning; it is not applicable for coarse-tuning. Therefore, the output shaft is connected to the U-shaped frame 21 via two support bearings. A guide rail 22 is provided between the U-shaped frame and the corresponding first or second vertical plate. A screw jack 23 is installed at the bottom of the U-shaped frame. The screw jacks corresponding to the two power components mentioned above can be connected together via a transmission shaft 33, and driven synchronously by a motor to rotate and lift, thereby causing the U-shaped frame to move up and down. The lifting and lowering of the U-shaped frame can change the initial position of the connecting arm, thereby adjusting the attitude angle of the corresponding swing plate.

[0052] During the grooving process described above, waste particles will fall off. Therefore, a waste recycling device is installed below the grooving roller, as described above. Figure 5 As shown, the waste recycling device includes a first horn cover 24, a second horn cover 25, and a base box 26 arranged from top to bottom. The larger end of the first horn cover faces the lower roller assembly, and the smaller end of the first horn cover extends into the larger end of the second horn cover. The smaller end of the second horn cover extends into the top opening of the base box, and a dust collection mechanism 27 is horizontally connected to the base box. The dust collection mechanism extracts the waste through ventilation and can be collected externally using cloth bags or centrally. The first horn cover is used to collect waste particles falling from the slot, while the second horn cover is mainly used to guide and collect the waste particles. Simultaneously, an air inlet gap is provided between the outer wall of the small end of the first horn cover and the inner wall of the large end of the second horn cover. The cut waste particles are dispersed at this gap before entering the bottom box. At the bottom box location, the small end of the second horn cover is equipped with a long baffle plate 28 and a short baffle plate 29. The short baffle plate is located on one side of the bottom box of the dust collection mechanism, and the long baffle plate is located on the side of the bottom box away from the dust collection mechanism, forming an L-shaped flow channel with the bottom and side walls of the bottom box. The L-shaped flow channel also serves as an air inlet, ensuring that the waste particles do not clump together or clog.

[0053] Reference Figure 1 , Figure 9 and Figure 10As shown, it is necessary to effectively press the sheet material onto the lower roller assembly during equipment operation. The pressure should not be too high, as this can easily damage the sheet material; conversely, too low pressure can easily lead to problems such as poor grooving depth during the grooving process. Therefore, the pressure roller assembly needs to be effectively designed.

[0054] The upper pressure roller assembly includes multiple parallel pressure rollers 117, each with a swing beam 118 above it. Both ends of the swing beam are equipped with inverted V-shaped connectors 119. These connectors can be a single unit or two independent components arranged at an angle. One bottom end of each connector is connected to the pressure roller shaft, and the two connectors position and fix the pressure roller. One end of each pressure roller is connected to a gearbox via a universal joint, driven by a motor for synchronous rotation. The other bottom end of each connector is connected to the corresponding first or second vertical plate, thus supporting the entire upper pressure roller assembly between the first and second vertical plates. The multiple swing beams are connected by a linkage mechanism 120, ensuring synchronous pressure roller movement during downward or upward motion and reducing overall mechanism complexity while avoiding asynchrony caused by a single drive. One swing beam has a first swing arm 121, which is connected to one end of a push-pull cylinder 122. The other end of the cylinder is connected to the beam frame between the first and second vertical plates. The push-pull cylinder action applies thrust to one of the swing beams through the first swing arm. Due to the linkage mechanism, the remaining swing beams are simultaneously subjected to force and rotate along the position where the inverted V-shaped connector is axially connected to the first and second vertical plates, that is, they move along the arc direction, thereby moving towards or away from the lower roller assembly.

[0055] When the sheet material enters between the upper pressure roller assembly and the lower support roller assembly, the pressure roller of the upper pressure roller assembly is driven to rotate by power to realize automatic feeding of the sheet material. The lower support roller assembly can be a driven structure. After the sheet material enters, it moves continuously. During the movement, the cutting tool on the grooving roller rotates and grooves. After the movement is completed, it can be driven to unload by the rotation of the pressure roller. Of course, the lower support roller assembly is preferred.

[0056] To further improve the equipment's adaptive performance and meet the requirement of not adjusting the machine when grooving plates of different thicknesses, a linkage mechanism is designed. This mechanism includes a screw 123 and multiple second swing arms 124. The second swing arms are fixedly mounted in pairs on the swing beam, and a buffer linkage plate 125 is axially connected between two second swing arms. The screw passes through the buffer linkage plate, and a buffer spring 126 is installed between the screw and each buffer linkage plate. The buffer springs can be constant force springs. Before the plate enters the equipment, the upper pressure roller assembly is driven close to the lower support roller assembly. The distance between the upper and lower support roller assemblies is less than the plate thickness. After the plate enters, the pressure roller of the upper pressure roller assembly is squeezed by the plate and moves in the opposite direction. At this time, the push-pull cylinder does not need to adjust the pressure; it can maintain its current operating state. When the pressure roller is squeezed and moves in the opposite direction, the corresponding swing beam also moves synchronously. At this time, the buffer spring is compressed, satisfying the above movement without affecting the operation of the push-pull cylinder. Simultaneously, the buffer spring provides the force to press the plate. For plates of different thicknesses, the compressed size of the buffer spring is different. Throughout the process, the push-pull cylinder does not need to adjust its extension length.

[0057] For the swing beam corresponding to the first swing arm, no pressure roller is installed below it. Its corresponding buffer linkage plate is locked to the screw. The buffer linkage plates corresponding to the other swing beams are sleeved to the screw and abutted together by buffer springs. One end of the buffer spring abuts against the limit seat fixed on the screw. After installation, the buffer spring always applies force to the corresponding buffer linkage plate.

[0058] The system consists of two screws. One screw has a buffer spring on the first surface of the buffer linkage plate, while the other screw has a limit nut on the same surface. Working together, when the push-pull cylinder drives the first swing arm, the corresponding swing beam moves downwards (during the pressing process). The buffer linkage plate corresponding to this swing beam is pulled downwards by the two second swing arms. Simultaneously, this buffer linkage plate pulls the two screws downwards. The remaining buffer linkage plates on the two screws are also pulled downwards due to the screw's movement, achieving a synchronized pressing effect. The buffer linkage plate and the second swing arm are axially connected, allowing for adaptive rotation during the arc-shaped motion to prevent jamming.

[0059] When the sheet material enters, the pressure roller is squeezed, generating a reverse upward force. At this time, the buffer spring is compressed, ensuring that the pressure roller presses firmly against the sheet material and can adaptively move upward, avoiding excessive pressure on the sheet material. After the sheet material moves away from the pressure roller, the buffer spring returns to its original position, and the pressure roller continues to move downward to its initial state.

[0060] The push-pull cylinder reset action drives the first swing arm to move upward, and the swing beam corresponding to the first swing arm moves upward (reset process). The buffer linkage plate corresponding to the swing beam is pulled upward by the two second swing arms. Simultaneously, the buffer linkage plate pulls the two screws upward. The remaining buffer linkage plates on the two screws are pulled upward synchronously due to the change in the movement of the screws, thereby achieving the effect of synchronous upward reset.

[0061] Based on the above structure, the operation of the equipment will be described using specific parameters as an example:

[0062] When processing SPC flooring using the back-grooving device of the present invention, the following parameters are selected: flooring dimensions: 1250mm x 950mm x 8mm; saw blade: diameter 250mm; feed speed: 30m / min; blade rotation speed: 1800 rpm; sawing speed: 3000 rpm; grooving depth: 2.5mm; grooving length: 580mm; grooving center distance: 6mm.

[0063] In actual operation, the flooring is fed into the device manually or via a conveyor. First, when the flooring reaches the feed end of the device, sensors detect its current position. The system uses a calculation module, combined with the flooring's feeding speed, to determine the precise time it takes for the flooring to travel to the grooved position.

[0064] Of course, the feeding speed of the floorboard is determined by this device. Specifically, the floorboard is squeezed and conveyed into the equipment by the cooperation of the upper pressure roller assembly and the lower support roller assembly. The rotation speed of the rollers determines the moving speed of the floorboard, and the feeding speed is set to 30 meters / minute.

[0065] Before sawing, the saw blade begins rotating at 3000 rpm, and the power unit controls the preparation for cutting (i.e., cutter skipping). When the floor moves to the sawing position, the actuator starts sawing, and the motor in the power unit rotates, driving the rotating saw blade to cut via a cam. The saw blade, moving at 3000 rpm, makes continuous or intermittent grooving on the floor. The system calculates the sawing time as 1.16 seconds based on the start time of cutting and the floor's moving speed, and controls the saw to retract after 1.16 seconds of cutting, moving the saw blade away from the floor and leaving a 580mm long groove. The cutting depth is controlled by the power unit and is 2.5mm.

[0066] Repeat the above steps to continuously groove the floorboards. After grooving is complete, the floorboards will move to the next process.

[0067] This embodiment significantly improves the processing efficiency and quality of SPC flooring through reasonable structural design and accurate technical parameter settings, ensuring the reliability and efficiency of continuous mass production.

[0068] The WPC flooring (stone plastic flooring) was processed again using the back grooving device of the present invention. The stone plastic flooring has a size of 1250*970*8mm. A 250mm diameter saw blade was used, the feed speed was 34m / min, the speed of the jump cutter motor was 2000r / min, the jump cutter action was 2 times, the speed of the sawing motor was 2500r / min, the maximum instantaneous power of the sawing motor was 56KW±3KW, the groove depth was 3.2mm±0.4mm, and the groove length was 580mm±10mm.

[0069] The grooving method is the same as the processing steps for SPC flooring, the difference being that for a single plank, two skip cuts are required to create two grooves along the length of the plank. Figure 11 As shown, after the first channel is opened, the feed and retraction times can be calculated based on the moving speed.

[0070] In the two operational examples above, the saw blades are matched to the required number of slots, and adjacent saw blades are separated by spacers to obtain the spacing between each slot. Different spacers are selected to space the saw blades according to the width of different plates and the distance between the slot and the side of the plate. The plates are positioned and conveyed by the feeder, matching the position of the saw blades.

[0071] The above embodiments are merely preferred embodiments provided to fully illustrate the present invention, and the scope of protection of the present invention is not limited thereto. Equivalent substitutions or modifications made by those skilled in the art based on the present invention are all within the scope of protection of the present invention.

Claims

1. A grooving device for the back of a sheet metal, characterized in that, It includes two parallel first vertical plates and second vertical plates, with an upper pressure roller assembly and a lower support roller assembly disposed between the first vertical plates and the second vertical plates, the upper pressure roller assembly and the lower support roller assembly cooperating to transport the plate material; The lower support roller assembly is provided with a grooving roller, and the grooving roller is provided with a cutting tool, which is used to groove the plate. The grooving roller is provided with a first swing plate and a second swing plate at both ends. One end of the first swing plate is connected to the first vertical plate shaft, and one end of the second swing plate is connected to the second vertical plate shaft. The other ends of the first swing plate and the second swing plate are both connected to the power component. The power component drives the first swing plate and the second swing plate to swing synchronously.

2. The plate back grooving device as described in claim 1, characterized in that, A pull-out frame is provided between the first swing plate and the second swing plate. The pull-out frame includes a guide sleeve and a pull-out core rod. One end of the pull-out core rod is set inside the guide sleeve, and the other end is fixed to the connecting frame. Both ends of the guide sleeve are fixedly connected to the first swing plate and the second swing plate, respectively. The connecting frame is detachably connected to the first swing plate. A mounting bearing seat is provided between one end of the slotted roller and the connecting frame, and the other end is connected to the drive assembly.

3. The plate back grooving device as described in claim 2, characterized in that, The pull-out mandrel is provided with multiple abutment wheels at one end inside the guide sleeve. The abutment wheels are used to suspend the pull-out mandrel in the guide sleeve. At least two bearing rollers are provided on the first swing plate below the pull-out mandrel. The bearing rollers cooperate with the abutment wheels to keep the pull-out mandrel moving axially.

4. The plate back grooving device as described in claim 2, characterized in that, The connecting frame includes a fixed support base plate, on which a rotating sleeve and a rotating shaft are provided. One end of the rotating shaft is connected to a mounting bearing seat. The rotating sleeve and the rotating shaft cooperate to drive the mounting bearing seat to rotate in the horizontal direction. The drive assembly includes a rotary motor, and an anti-rotation structure is provided between the output end of the rotary motor and the end of the slotted roller. The anti-rotation structure is a spline connection structure. A first conical surface is provided on the output end of the rotary motor, and a second conical surface is provided in the end of the slotted roller corresponding to the first conical surface. The first conical surface and the second conical surface cooperate and abut against each other.

5. The plate back grooving device as described in claim 1, characterized in that, The first and second swing plates are both connected to the corresponding power components. The power components include a drive motor. A cam bearing is provided on the output shaft of the drive motor. The cam bearing is connected to one end of the connecting arm. The other end of the connecting arm is connected to the corresponding first or second swing plate through a first rotating shaft.

6. The plate back grooving device as described in claim 5, characterized in that, A shock absorber is also provided between the output shaft and the first rotating shaft. The output shaft is connected to the U-shaped frame through two support bearings. A guide rail is provided between the U-shaped frame and the corresponding first or second upright plate. A screw jack is provided at the bottom of the U-shaped frame.

7. The plate back grooving device as described in claim 1, characterized in that, A waste recycling device is provided below the grooving roller. The waste recycling device includes a first horn cover, a second horn cover, and a bottom box arranged from top to bottom. The large end of the first horn cover faces the lower roller assembly, the small end of the first horn cover extends into the large end of the second horn cover, and the small end of the second horn cover extends into the top opening of the bottom box. A dust collection mechanism is horizontally connected to the bottom box.

8. The plate back grooving device as described in claim 7, characterized in that, An air inlet gap is provided between the outer wall of the small end of the first horn cover and the inner wall of the large end of the second horn cover. The small end of the second horn cover is provided with a long baffle plate and a short baffle plate. The short baffle plate is located on one side of the bottom box of the dust collection mechanism, and the long baffle plate is located on the side of the bottom box away from the dust collection mechanism, and cooperates with the bottom of the bottom box and the side wall to form an L-shaped flow channel.

9. The plate back grooving device as described in claim 1, characterized in that, The upper pressure roller assembly includes multiple pressure rollers arranged in parallel. Each pressure roller has a swing beam above it. Both ends of the swing beam are provided with inverted V-shaped connectors. One bottom end of the inverted V-shaped connector is connected to the shaft of the pressure roller, and the other bottom end of the inverted V-shaped connector is connected to the corresponding first or second vertical plate. The multiple swing beams are connected by a linkage mechanism. One of the swing beams is provided with a first swing arm. The first swing arm is connected to one end of a push-pull cylinder, and the other end of the push-pull cylinder is connected to the beam frame between the first and second vertical plates.

10. The plate back grooving device as described in claim 9, characterized in that, The linkage mechanism includes a screw and multiple second swing arms. The multiple second swing arms are fixedly mounted on the swing beam in pairs. A buffer linkage plate is axially connected between two second swing arms. The screw passes through the buffer linkage plate and a buffer spring is provided between the screw and each buffer linkage plate.

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