Equipment and process for processing tenon and groove joints in lightweight hollow slabs

Abstract

This invention relates to a lightweight hollow slab tenon and groove processing equipment and process. The equipment includes a roller conveying mechanism, a slab clamping mechanism, a slab feeding mechanism, and a tenon and groove cutting mechanism. The tenon and groove cutting mechanism is connected to the roller conveying mechanism on both sides. The slab feeding mechanism spans across the roller conveying mechanism. The slab clamping mechanism is entirely located within and connected to the slab feeding mechanism, allowing the slab feeding mechanism to move above the roller conveying mechanism along with the clamping mechanism. This invention eliminates the use of molds to press the tenons and grooves. Instead, after the slab is demolded but before it has completely dried and hardened, a specially designed grooving device cuts the tenons and grooves on the bottom surface of the slab. The cut surfaces of the tenons and grooves are smooth and burr-free. Because the slab is positioned before processing, the resulting tenons and grooves are accurate in size and consistent, reducing secondary processing or trimming caused by cutting and resulting in high processing quality.

Description

Technical Field

[0001] This invention relates to a processing equipment and process for processing tenons and grooves in lightweight hollow strip boards, belonging to the technical field of board processing equipment. Background Technology

[0002] Lightweight hollow core panels (hereinafter referred to as panels) refer to precast wall panels used for non-load-bearing parts as specified in standard JG / T169-2016 "Lightweight Core Panels for Building Partitions". They have a wide range of uses and have advantages such as moisture resistance, earthquake resistance and sound insulation, fire resistance and heat insulation, small footprint, high strength and convenient construction.

[0003] The panels are mainly made from magnesium oxide, magnesium chloride, perlite, fiberglass cloth, water, and other additives through mixing, molding, and oxygen-curing drying processes. Each panel has tenons and mortises on both sides. During installation, the tenon of one panel is inserted into the mortise of another, and mortar is applied between the tenon and mortise to improve the fit. The mortise and tenon structure facilitates splicing and fixing during installation, making the connection more stable and improving construction efficiency. Furthermore, the mortise and tenon structure also helps enhance the rigidity and stability of the panels, improving their resistance to deformation under load.

[0004] In traditional manufacturing processes, the tenons and mortises of the panels are pressed out as a whole by a mold during the forming stage. However, in actual production, it has been found that the surface quality of the mortises pressed out by the mold is often low, specifically manifested as pitting, uneven surface, and exposed fiberglass. These problems seriously affect the tightness and aesthetics of the splicing between panels.

[0005] Chinese patent document CN211842142U discloses a cutting device for processing low-density linear panels. The device includes a base plate with support columns on both sides of its top. Multiple mounting grooves and mounting openings are formed on the inner side of the support columns. Mounting rods are fixedly connected to both ends of a working plate. A cylinder is mounted on the upper surface of the working plate, with a piston rod connected to the output end of the cylinder. A linkage rod is fixedly connected to the bottom of the piston rod, and a cutting blade is mounted on the other end of the linkage rod. Through the T-shaped mounting rods and mounting grooves, the working plate and support columns can be assembled and separated flexibly and conveniently, and the cutting height can be adjusted. Furthermore, the cylinder, under the action of the linkage rod, stably pushes and pulls along the auxiliary slots, realizing the cutting operation of the linear panels. This solves the problem of poor flexibility in the cutting operation of linear panels in the prior art. Chinese patent document CN217021026U discloses a cutting device for concrete strips. The device includes a base plate with a guiding feeding mechanism at one end. A feeding conveyor mechanism is located on the base plate below the guiding feeding mechanism. An assembly frame is mounted above the feeding conveyor mechanism and connected to the guiding feeding mechanism. A lifting frame is movably mounted on the assembly frame via a lifting hydraulic cylinder. A cutting mechanism is staggered on the lifting frame. This cutting device, through staggered cutting blades, effectively reduces the contact area between the cutting blades and the concrete strips compared to using a single cutting blade, thereby reducing frictional resistance and effectively improving cutting efficiency. Multiple sliding rollers located inside a slot at the center of the lifting frame provide radial restraint for each concrete strip, effectively preventing slippage during cutting and avoiding skewing of the cut.

[0006] Therefore, it is necessary to design a special equipment and process for processing tongue and groove joints of strip panels to change the problems of low surface quality and low processing efficiency of traditional mold pressing process. Summary of the Invention

[0007] To address the drawback of low surface quality in the processing of tenon and mortise grooves for hollow slabs, this invention provides a lightweight hollow slab tenon and mortise groove processing device. This device cuts tenons and mortises into the bottom surface of the slab after demolding but before it has completely dried and hardened. The cut tenons and mortises are dimensionally accurate and have high surface quality and good consistency.

[0008] The present invention also provides a process method for processing the tenon groove of hollow strips using the above-mentioned processing equipment.

[0009] The technical solution of the present invention is as follows:

[0010] A lightweight hollow strip tenon and groove processing equipment includes a roller conveying mechanism, a strip clamping mechanism, a strip feeding mechanism, and a tenon and groove cutting mechanism;

[0011] The roller conveying mechanism includes a frame, idlers, and supports. Multiple rows of supports are arranged parallel to each other on both sides of the frame, and the two ends of multiple idlers are respectively connected to the multiple rows of supports.

[0012] The strip clamping mechanism includes an inner frame, a first electric push rod, and a second electric push rod; a fixed baffle is provided on one side of the inner frame, and a movable baffle is provided on the side opposite to the fixed baffle. The top of the movable baffle is connected to the inner frame by a trolley, and the first electric push rod and the second electric push rod are respectively connected to the left and right ends of the movable baffle.

[0013] The strip feeding mechanism includes an outer frame, a gate plate, a third electric push rod, and a fourth electric push rod; the third electric push rod and the fourth electric push rod are mounted on the outer frame and connected to the gate plate below; a feed motor is also mounted on the outer frame, and the feed motor is connected to a gear, which is connected to a rack mounted on both sides of the roller conveyor frame; the inner frame is placed inside the outer frame, and the top of the inner frame is connected to the top of the outer frame via a pulley.

[0014] The tenon cutting mechanism includes a support frame, a base plate, a grooving motor, cutting blades, and a cutting shaft; multiple cutting blades are arranged side by side on the cutting shaft, one end of the cutting shaft is rotatably connected to the base plate, and the other end of the cutting shaft is driven and connected by the grooving motor, which is mounted on the base plate, and the base plate is connected to the support frame.

[0015] Preferably, the roller is provided with bearings at both ends, and the bearings are fixedly mounted on the support.

[0016] Preferably, the support is welded to the frame.

[0017] Preferably, the top of the movable baffle is provided with a lifting lug, the bottom end of the trolley is connected to the lifting lug by bolts, and the top end of the trolley is slidably connected to the I-beam on the inner frame by pulleys.

[0018] Preferably, the cylinders of the first and second electric push rods are fixedly connected to the inner frame, and the piston rods of the first and second electric push rods are hinged to the left and right ends of the movable baffle.

[0019] Preferably, the bottom of the outer frame is provided with casters, which are installed on parallel tracks laid on the ground.

[0020] Preferably, the top of the inner frame is provided with a lifting lug, the bottom end of the trolley is connected to the lifting lug by bolts, and the top end of the trolley is slidably connected to the I-beam at the top of the outer frame by pulleys.

[0021] Preferably, the outer frame is provided with vertical angle steel rails or C-shaped steel rails, with both sides of the gate plate placed within the rails. The advantage of this design is that the gate plate moves up and down along the rails during opening or closing, ensuring stability during this movement.

[0022] Preferably, three or four cutting blades are arranged side by side on the cutter shaft.

[0023] Preferably, the grooving motor is connected to the cutter shaft via a coupling.

[0024] Preferably, the base plate is provided with a bearing seat, and the two ends of the cutter shaft are connected to bearings, which are placed on the bearing seat.

[0025] Preferably, the support frame is provided with three cutter shafts, each equipped with 3, 4, or 3 cutting blades respectively, and the three cutter shafts are driven by three grooving motors.

[0026] Preferably, the three cutter shafts are arranged on the support frame in a front and rear configuration, with the cutter shaft containing three cutting blades arranged at both ends of the support frame and on the same side, and the cutter shaft containing four cutting blades arranged in the middle of the support frame and on the other side.

[0027] Preferably, the cutting tool includes a cutting disc, on which a plurality of outwardly extending cutting teeth are provided, and on the cutting teeth are provided a blade holder, and on the blade holder is mounted a blade.

[0028] Preferably, the cutting teeth include bottom cutting teeth and side cutting teeth, which are spaced apart; the blade is in the shape of an isosceles triangle, with two blades arranged side by side on the blade holder of the bottom cutting teeth and the bottom surfaces of the two blades facing outwards, and two blades arranged at both ends on the blade holder of the side cutting teeth and the vertices of the two blades facing outwards.

[0029] Preferably, the blade and the blade holder, as well as the blade holder and the cutting teeth, are fixedly connected by screws.

[0030] Preferably, the cutter head and the cutter shaft are connected by a key.

[0031] Preferably, the processing equipment further includes a PLC, limit switches, and signal switches. The limit switches are installed on the frame, inner frame, and outer frame, and the signal switches are installed on the frame. The motor, electric push rod, limit switches, and signal switches are all connected and controlled by the PLC.

[0032] A working method for a lightweight hollow slab tenon and groove processing device includes the following steps:

[0033] 1) Place the strip to be processed on the roller conveyor mechanism;

[0034] 2) When the first and second electric push rods are used for the first time, the moving baffle is pushed inward to clamp the strip to be processed between the moving baffle and the fixed baffle. At this time, there is still a gap between the strip and the fixed baffle.

[0035] 3) The third and fourth electric push rods work to lower the gate plate; the feed motor drives the gear rack to work, and the outer frame moves together with the inner frame towards the discharge end; when the gate plate contacts the rear end face of the strip to be processed and gradually stacks up, the feed motor stops working and the outer frame stops moving.

[0036] 4) The first and second electric push rods operate again to fully clamp the strip to be processed;

[0037] 5) The feed motor restarts operation, the outer frame drives the inner frame to continue moving forward, and the strip to be processed passes through the tenon and groove cutting mechanism, and the bottom surface of the strip is processed by the cutting tool to form the required tenon and groove.

[0038] 6) When the outer frame drives the inner frame to continue moving forward to the discharge end, the first electric push rod, the second electric push rod, the third electric push rod and the fourth electric push rod operate, and the moving baffle and gate plate return to their initial state.

[0039] 7) The feed motor drives the gear to work in the opposite direction, and the outer frame drives the inner frame to move in the opposite direction back to the initial position, ready for the next operation.

[0040] Technical features and beneficial effects of the present invention:

[0041] 1. The mortise and tenon joint processing equipment of this invention adopts a completely new design concept. Instead of using molds to press the mortise and tenon joints, a specially designed grooving device cuts the mortise and tenon joints on the bottom surface of the mortise and tenon joints after the mortise and tenon joints are removed from the mold and before they are completely dry and hardened. This mortise and tenon joint processing equipment has a high degree of automation, enabling automatic feeding of the mortise and tenon joints, and the cutting speed and feed speed are adjustable.

[0042] 2. The mortise and tenon joint processing equipment of this invention can ensure the accuracy of the cutting position by adjusting the position of the fixed baffle, the range of motion of the movable baffle, and the position of the cutting tool, thus ensuring the dimensional accuracy and straightness of the cut. The mortise and tenon cutting mechanism has the capability of batch and high-speed cutting, enabling rapid cutting and processing of multiple strips of board, resulting in high work efficiency.

[0043] 3. The mortise and tenon joint processing equipment of the present invention can cut different types of materials by changing the blades of different materials and processing techniques, using servo motors of different power, and setting different feed speeds and cutting speeds. The equipment has a wide range of applications.

[0044] 4. The mortise and tenon joint processing equipment of the present invention has automatic feeding, positioning, cutting and unloading functions, which do not require manual intervention and improve the degree of automation of production.

[0045] 5. The process method of this invention uses a cutting tool to replace the traditional method of pressing the entire mold. The cut surface of the tenon groove is smooth and burr-free. Since the strip is positioned before processing, the dimensions of the processed tenon groove are accurate and consistent, reducing secondary processing or trimming caused by cutting, and resulting in high processing quality. Attached Figure Description

[0046] Figure 1 This is a schematic diagram of the hollow slab structure;

[0047] Figure 2 This is a schematic diagram of the structure of the mortise and tenon joint processing equipment of the present invention;

[0048] Figure 3 This is a schematic diagram of the roller conveyor mechanism.

[0049] Figure 4 This is a schematic diagram of the strip clamping mechanism.

[0050] Figure 5 This is a schematic diagram of the strip feeding mechanism.

[0051] Figure 6 This is a schematic diagram of the tenon and groove cutting mechanism.

[0052] Figure 7 This is a schematic diagram of the cutting tool structure;

[0053] Figure 8a This is a schematic diagram of a tenon and mortise structure;

[0054] Figure 8b This is a schematic diagram of the side of the cut tenon groove;

[0055] Figure 8c This is a schematic diagram of the bottom surface of the cut tenon groove;

[0056] In the diagram: 1-board edge, 2-board end, 3-tenon, 4-mortise, 5-joint groove, 6-board feeding mechanism, 7-board clamping mechanism, 8-mortise cutting mechanism, 9-roller conveying mechanism, 10-support roller, 11-frame, 12-support, 13-fixed baffle, 14-inner frame, 15-trolley, 16-first electric push rod, 17-moving baffle, 18-second electric push rod, 19-lifting lug, 20-outer frame, 21-fourth electric push rod, 22-third electric push rod, 2 3-Gate plate, 24-Angle steel rail, 25-Feed motor, 26-Gear and rack mechanism, 27-Cast wheel, 28-Rail, 29-Motor bracket, 30-Base plate, 31-Cutter shaft, 32-Cutting blade, 33-Grooving motor, 34-Coupling, 35-Bearing seat, 36-Support frame, 37-Cutter disc, 38-Insert blade, 39-Insert blade holder, 40-Bottom cutting tooth, 41-Side cutting tooth, 42-Tongue bottom surface, 43-Tongue side surface, 44-Cutting surface, 45-Cutting surface. Detailed Implementation

[0057] The present invention will be further described below with reference to the embodiments and accompanying drawings, but is not limited thereto.

[0058] Example 1:

[0059] like Figure 2 As shown, this embodiment provides a lightweight hollow strip tenon and groove processing equipment, including a roller conveying mechanism 9, a strip clamping mechanism 7, a strip feeding mechanism 6, and a tenon and groove cutting mechanism 8; wherein the tenon and groove cutting mechanism 8 is connected to the roller conveying mechanism 9 on both sides, the strip feeding mechanism 6 spans across the roller conveying mechanism 9, the strip clamping mechanism 7 is located entirely within the strip feeding mechanism 6 and connected to the strip feeding mechanism 6, and the strip feeding mechanism 6 can move back and forth above the roller conveying mechanism 9 with the strip clamping mechanism 7.

[0060] The roller conveying mechanism 9 includes a frame 11, idlers 10 and supports 12. Multiple rows of supports 12 are arranged in parallel on both sides of the frame 11, and the two ends of the multiple idlers 10 are respectively connected to the multiple rows of supports 12.

[0061] The strip clamping mechanism includes an inner frame 14, a first electric push rod 16 and a second electric push rod 18; a fixed baffle 13 is provided on one side of the inner frame 14, and a movable baffle 17 is provided on the side opposite to the fixed baffle 13. The top of the movable baffle 17 is connected to the inner frame 14 through a trolley 15. The first electric push rod 16 and the second electric push rod 18 are respectively connected to the left and right ends of the movable baffle 17.

[0062] The strip feeding mechanism includes an outer frame 20, a gate plate 23, a third electric push rod 22, and a fourth electric push rod 21; the third electric push rod 22 and the fourth electric push rod 21 are located at the rear of the outer frame and connected to the gate plate 23 below. A feed motor 25 is also provided on the outer frame, and the feed motor 25 is connected to a gear. The gear is connected to a rack on both sides of the roller conveyor frame. The inner frame 14 is placed inside the outer frame 20, and the top of the inner frame 14 is connected to the top of the outer frame 20 through a pulley.

[0063] The tenon cutting mechanism includes a support frame 36, a base plate 30, a grooving motor 33, cutting blades 32, and a cutting shaft 31. Multiple cutting blades 32 are arranged side by side on the cutting shaft 31. One end of the cutting shaft 31 is rotatably connected to the base plate 30, and the other end of the cutting shaft 31 is driven and connected by the grooving motor 33. The grooving motor 33 is mounted on the base plate 30, and the base plate 30 is connected to the support frame 36.

[0064] Specifically, frame 11, inner frame 14 and outer frame 20 are all frame structures welded from channel steel, square steel and I-beams, and are designed with corresponding shapes as needed.

[0065] Bearings are connected to both ends of the idler roller 10. The bearings are fixedly mounted on the support 12, which is welded to the frame 11. The idler roller 10 is a non-powered roller. When the strip is clamped by the clamping mechanism, it can move forward along the idler roller 10 under the drive of the feeding mechanism.

[0066] The top of the movable baffle 17 is welded with a lifting lug 19, the bottom of the trolley 15 is connected to the lifting lug 19 by bolts, and the top of the trolley 15 is slidably connected to the I-beam on the inner frame 14 by pulleys.

[0067] The cylinders of the first electric push rod 16 and the second electric push rod 18 are fixedly connected to the inner frame 14, and the piston rods of the first electric push rod 16 and the second electric push rod 18 are hinged to the left and right ends of the movable baffle 17. Subsequently, the first electric push rod 16 and the second electric push rod 18 push the movable baffle closer to or away from the fixed baffle, thereby clamping or releasing the strips. Ten strips can be clamped simultaneously between the movable baffle and the fixed baffle, improving processing efficiency.

[0068] The bottom of the outer frame 20 is equipped with casters 27, which are mounted on parallel tracks 28 laid on the ground. The outer frame 20 can then move back and forth along the parallel tracks 28 together with the inner frame 14.

[0069] The top of the inner frame 14 is welded with a lifting lug, and the bottom of the trolley is connected to the lifting lug by bolts. The top of the trolley is slidably connected to the I-beam at the top of the outer frame 20 by pulleys. The entire outer frame 20, along with the clamping mechanism and the strip to be cut, moves along the track and passes through the rotating cutter at a certain speed, thereby realizing the feed action.

[0070] Vertical angle steel rails 24 are welded onto the outer frame 20, and the two sides of the gate plate 23 are placed inside the angle steel rails 24. The gate plate 23 moves up and down along the rails during opening or closing to ensure stability during the up and down movement.

[0071] The output shaft of the grooving motor 33 is connected to the cutter shaft 31 via a coupling 34, driving the cutter shaft 31 to rotate at a certain speed. The cutter shaft 31 also rotates the cutting tool 32, thereby enabling the cutting tool 32 to perform tenon and grooving operations on the bottom surface of the strip. In this embodiment, both the feed motor and the grooving motor are servo motors with reducers, which can adjust the feed speed and cutting speed.

[0072] A bearing seat 35 is mounted on the base plate 30, and bearings are connected to both ends of the cutter shaft 31, with the bearings placed on the bearing seat 35. The grooving motor 33, coupling 34, and cutter shaft 31 are connected in sequence and installed as a whole on the base plate 30, and then the base plate 30 is bolted to the support frame 36.

[0073] like Figure 6As shown, in this embodiment, the support frame 36 is provided with three cutter shafts 31, and the three cutter shafts 31 are respectively provided with 3, 4, and 3 cutting blades 32. The three cutter shafts 31 are driven by three grooving motors 33. The three cutter shafts 31 are arranged on the support frame 36 in a front and rear configuration. The cutter shaft with 3 cutting blades is arranged at both ends of the support frame and located on the same side, while the cutter shaft with 4 cutting blades is arranged in the middle of the support frame and located on the other side.

[0074] like Figure 7 As shown, the cutting tool 32 includes a cutter head 37, which is connected to the cutter shaft 31 via a key. The cutter head 37 has six outwardly extending cutting teeth, which are integral with the cutter head. Insert holders 39 are mounted on the cutting teeth via screws, and inserts 38 are mounted on the insert holders 39 via screws. Three of the cutting teeth are bottom cutting teeth 40, and the other three are side cutting teeth 41, spaced apart. The inserts 38 are isosceles triangles. The bottom cutting teeth 40 have two inserts arranged side-by-side on their insert holders, with their bottom surfaces facing outwards to form a flat cutting edge. The side cutting teeth 41 have two inserts at each end on their insert holders, with their apexes facing outwards to form a beveled cutting edge.

[0075] like Figure 8a As shown, the tenon and groove structure on the bottom surface of the slab is machined using a cutting tool. When machining the bottom surface of the tenon and groove, the flat edges of the two blades on the bottom cutting teeth are used for machining, as shown... Figure 8c As shown. When machining the side of the tenon, the side bevels of the two cutting blades on the side cutting teeth are used for machining, such as... Figure 8b As shown.

[0076] Because the strips harden and become uncut after 2-3 hours after demolding, the technical solution of this embodiment allows for simultaneous grooving of 10 strips, thus improving production efficiency. The machined tenons and grooves are dimensionally accurate, with high surface quality and good consistency.

[0077] Example 2:

[0078] A lightweight hollow strip board tenon and groove processing equipment, with the structure as described in Example 1, except that: a vertical C-shaped steel track is welded on the outer frame 20, and the two sides of the gate plate 23 are placed inside the C-shaped steel track.

[0079] Example 3:

[0080] A lightweight hollow strip board tenon and groove processing equipment, with the structure as described in Example 1, except that the trolley 15 is a T-type trolley.

[0081] Example 4:

[0082] A working method for a lightweight hollow strip board tenon and mortise processing device, utilizing the strip board tenon and mortise processing device of any of the embodiments 1-3, specifically includes the following steps:

[0083] 1) Equipment self-test upon startup. After startup, the equipment automatically performs self-tests on the PLC controller, motor, electric actuator, limit switches, and signal switches to ensure they are working properly, securely connected, and free from damage or malfunctions. This guarantees the performance, safety, and reliability of the equipment, providing a solid foundation for subsequent work.

[0084] 2) Slab feeding mechanism returns to zero. The feed motor of the slab feeding mechanism rotates in the forward direction. The feed motor and gear are connected through a reducer. The torque and speed of the feed motor are transmitted to the gear through the reducer. The gear meshes with the rack in a fixed position. The gear is subjected to the reverse force of the rack and begins to move along the track towards the feeding side. When the outer frame detects the limit switch, it indicates that the feeding mechanism has reached the initial position, and the feed motor stops rotating.

[0085] 3) Positioning mechanism returns to zero. The first and second electric push rods retract synchronously, driving the moving baffle away from the fixed baffle. The distance between the moving baffle and the fixed baffle gradually increases. When the moving baffle triggers the limit switch, it indicates that the limit position has been reached. The first and second electric push rods stop retracting, and the moving baffle stops moving. At this time, the distance between the moving baffle and the fixed baffle of the clamping device reaches its maximum value. The third and fourth electric push rods controlling the gate plate retract simultaneously, driving the gate plate upward. When the gate plate triggers the limit switch, it indicates that the upper limit position has been reached. At this time, the third and fourth electric push rods stop retracting, and the gate plate stops moving. The equipment initialization and zeroing are complete, waiting for the strip to be cut to be placed at the feeding area.

[0086] 4) Initial Lateral Positioning of the Strips. The strips are hoisted from the previous process onto the roller conveyor. After the strips are placed, the first and second electric push rods extend, pushing the moving baffle towards the fixed baffle. The strips to be processed are gradually pushed towards the fixed baffle by the moving baffle. After the moving baffle reaches the set position, the first and second electric push rods stop extending. At this time, the distance between the fixed baffle and the moving baffle is the total thickness of 10 strips, 905mm, including the total thickness of 10 strips, 900mm and a 5mm gap, thus completing the initial lateral positioning of the strips.

[0087] 5) Longitudinal positioning of the strip. The third and fourth electric push rods extend synchronously, driving the gate plate to descend. At the same time, the feed motor starts in reverse, driving the gear to rotate. The gear and rack mesh, and the gear is subjected to the reverse force of the rack. The feed mechanism and clamping mechanism as a whole move a short distance (5s) along the track laid on the bottom surface towards the discharge end at a speed of v0 = 2.5cm / s. As the feed mechanism moves forward, the gate plate will contact the rear end face of the strip and push the strip so that the rear end face of all strips is coplanar with the plane where the gate plate is located. At this time, the feed motor stops moving.

[0088] 6) Final horizontal positioning of the strip. After the longitudinal positioning of the strip is completed, the first and second electric push rods continue to extend until the distance between the fixed baffle and the moving baffle is 900mm, and then the first and second electric push rods stop working.

[0089] 7) Grooving. After the strip is positioned, the feed motor restarts and gradually increases its speed until the feed mechanism's moving speed reaches v1 = 10 cm / s. When it approaches the tenon and grooving mechanism, signal switch 1 is triggered. At this time, the three grooving motors connected to the cutter shaft start, with a speed n = 1500 r / min. Each cutter shaft is driven to rotate by the corresponding grooving motor via a coupling, and then the cutter shaft drives the cutting tool to rotate. The feed mechanism pushes the strip through the tenon and grooving mechanism, and the bottom surface of the strip to be processed is cut into the required shape by a special tool. When all the grooves on the strip are finished, the feed mechanism continues to move towards the discharge end until stop signal switch 2 is triggered. At this time, the grooving motor of the tenon and grooving mechanism stops rotating, and the cutting tool stops rotating accordingly, and the grooving ends.

[0090] 8) Feeding. After the grooving is completed, the feeding mechanism will continue to move a certain distance to send the cut strip to the discharge end: the feeding motor of the strip feeding mechanism continues to rotate until the limit switch is triggered, indicating that the feeding mechanism has sent the cut strip to the designated discharge position. At this time, the feeding motor stops moving and the feeding mechanism stops moving.

[0091] 9) Clamping mechanism reset. After the cut strips are delivered to the designated position, the first and second electric push rods retract, and the distance between the moving baffle and the fixed baffle gradually increases until the limit switch is triggered. The first and second electric push rods stop retracting, and the moving baffle returns to its initial state, ready to position and clamp the next batch of strips. At the same time, the third and fourth electric push rods retract, and the gate plate moves upward until the limit switch is triggered. The third and fourth electric push rods stop retracting, and the gate plate returns to its initial state, ready to longitudinally position the next batch of strips.

[0092] 10) Feeding mechanism reset. After the clamping mechanism is reset, the feeding motor starts in the forward direction, driving the feeding mechanism to move towards the feeding end until the limit switch is triggered. The feeding motor stops rotating, the feeding mechanism returns to the initial position, the reset is completed, and it waits for the next feeding.

[0093] The above description is merely a specific embodiment of the present invention, and the scope of protection of the present invention is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in the present invention should be included within the scope of protection of the present invention.

Claims

1. A working method for a lightweight hollow strip mortise and tenon groove processing equipment, the processing equipment comprising a roller conveying mechanism, a strip clamping mechanism, a strip feeding mechanism, and a mortise and tenon groove cutting mechanism; The roller conveying mechanism includes a frame, idlers, and supports. Multiple rows of supports are arranged parallel to each other on both sides of the frame, and the two ends of multiple idlers are respectively connected to the multiple rows of supports. The strip clamping mechanism includes an inner frame, a first electric push rod, and a second electric push rod; a fixed baffle is provided on one side of the inner frame, and a movable baffle is provided on the side opposite to the fixed baffle. The top of the movable baffle is connected to the inner frame by a trolley, and the first electric push rod and the second electric push rod are respectively connected to the left and right ends of the movable baffle. The strip feeding mechanism includes an outer frame, a gate plate, a third electric push rod, and a fourth electric push rod; the third electric push rod and the fourth electric push rod are mounted on the outer frame and connected to the gate plate below; a feed motor is also mounted on the outer frame, and the feed motor is connected to a gear, which is connected to a rack mounted on both sides of the roller conveyor frame; the inner frame is placed inside the outer frame, and the top of the inner frame is connected to the top of the outer frame via a pulley. The tenon and groove cutting mechanism includes a support frame, a base plate, a grooving motor, cutting blades, and a cutting shaft; multiple cutting blades are arranged side by side on the cutting shaft, one end of the cutting shaft is rotatably connected to the base plate, and the other end of the cutting shaft is driven and connected by the grooving motor, which is mounted on the base plate, and the base plate is connected to the support frame; Its features are, The working method includes the following steps: 1) Place the strip to be processed on the roller conveyor mechanism; 2) When the first and second electric push rods are used for the first time, the moving baffle is pushed inward to clamp the strip to be processed between the moving baffle and the fixed baffle. At this time, there is still a gap between the strip and the fixed baffle. 3) The third and fourth electric push rods work to lower the gate plate; the feed motor drives the gear rack to work, and the outer frame moves together with the inner frame towards the discharge end; when the gate plate contacts the rear end face of the strip to be processed and gradually stacks up, the feed motor stops working and the outer frame stops moving. 4) The first and second electric push rods operate again to fully clamp the strip to be processed; 5) The feed motor restarts operation, the outer frame drives the inner frame to continue moving forward, and the strip to be processed passes through the tenon and groove cutting mechanism, and the bottom surface of the strip is processed by the cutting tool to form the required tenon and groove. 6) When the outer frame drives the inner frame to continue moving forward to the discharge end, the first electric push rod, the second electric push rod, the third electric push rod and the fourth electric push rod operate, and the moving baffle and gate plate return to their initial state. 7) The feed motor drives the gear to work in the opposite direction, and the outer frame drives the inner frame to move in the opposite direction back to the initial position, ready for the next operation.

2. The working method of the lightweight hollow strip board tenon and groove processing equipment as described in claim 1, characterized in that, The top of the movable baffle is provided with a lifting lug, the bottom of the trolley is connected to the lifting lug by bolts, and the top of the trolley is slidably connected to the I-beam on the inner frame by pulleys.

3. The working method of the lightweight hollow strip board tenon and groove processing equipment as described in claim 1, characterized in that, The cylinders of the first and second electric push rods are fixedly connected to the inner frame, and the piston rods of the first and second electric push rods are hinged to the left and right ends of the movable baffle.

4. The working method of the lightweight hollow strip board tenon and groove processing equipment as described in claim 1, characterized in that, The top of the inner frame is provided with a lifting lug, the bottom end of the trolley is connected to the lifting lug by bolts, and the top end of the trolley is slidably connected to the I-beam at the top of the outer frame by a pulley.

5. The working method of the lightweight hollow strip board tenon and groove processing equipment as described in claim 1, characterized in that, The cutter shaft has three or four cutting blades arranged side by side.

6. The working method of the lightweight hollow strip board tenon and groove processing equipment as described in claim 1, characterized in that, The support frame is equipped with three cutter shafts, each with 3, 4, and 3 cutting blades respectively. The three cutter shafts are driven by three grooving motors.

7. The working method of the lightweight hollow strip board tenon and groove processing equipment as described in claim 6, characterized in that, The three cutter shafts are arranged on the support frame in a front and rear configuration. The cutter shaft containing three cutting blades is located at both ends of the support frame and on the same side, while the cutter shaft containing four cutting blades is located in the middle of the support frame and on the other side.

8. The working method of the lightweight hollow strip board tenon and groove processing equipment as described in claim 1, characterized in that, The cutting tool includes a cutting disc with multiple outwardly extending cutting teeth, each cutting tooth having a blade holder, and the blade holder having a blade mounted on it.

9. The working method of the lightweight hollow strip board tenon and groove processing equipment as described in claim 8, characterized in that, The cutting teeth include bottom cutting teeth and side cutting teeth, which are spaced apart. The blade is in the shape of an isosceles triangle. Two blades are arranged side by side on the blade holder of the bottom cutting teeth with their bottom surfaces facing outwards. Two blades are arranged at both ends on the blade holder of the side cutting teeth with their vertices facing outwards.

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