Diagonal cutting device for metal frame

Abstract

The utility model relates to the technical field of metal door and window processing, and discloses a metal frame diagonal cutting device which comprises a calibration assembly, a cutting assembly and a regulating assembly, the calibration assembly comprises an L-shaped plate, a calibration groove is formed in the L-shaped plate, an equipment mounting plate is arranged at the inner corner of the L-shaped plate, and the equipment mounting plate is connected with the L-shaped plate. A stable sliding groove communicating with the interior of the calibration groove is formed in the equipment mounting plate, a cutting saw and an L-shaped plate are mounted at an angle of 45 degrees, and an electric telescopic rod operates, so that the output end of the electric telescopic rod drives a fixed rod to move front and back through a linkage plate, a movable plate moves front and back in the stable sliding groove, and the movable plate is driven by a driving motor to move back and forth. The cutting saw moves back and forth in the cutting groove, 45-degree oblique angle cutting of one end of the metal door and window side plate is achieved, the end face cutting completeness is effectively guaranteed, deformation caused by cutting is avoided, meanwhile, calibration grooves are formed in the two ends of the L-shaped plate, two-way rapid cutting is achieved, and the cutting efficiency is further improved.

Description

Technical Field

[0001] The utility model relates to the technical field of metal door and window processing, in particular to a metal frame diagonal cutting device. Background Art

[0002] The door and window frame is a structure used to provide protection for the door and window glass, and is connected to the door and window track through the frame to realize the overall door and window installation steps. The door and window frames are mostly made of metal materials, which have certain wear resistance and corrosion resistance. In the production process of doors and windows, one of the steps is to diagonally cut the side panels of the metal doors and windows so that the end faces of the side panels are inclined at 45°. When the end faces are closed, the two side panels are at right angles.

[0003] According to the Chinese utility model patent announcement number CN215280094U, a rapid cutting device for the production of aluminum door and window frames is proposed, which adopts a downward pressure cylinder to drive the cutting knife block downward to achieve cutting of the door and window frames. However, due to the downward pressure of the cylinder for cutting, the sharpness of the blade is required to be high. In particular, when cutting metal door and window frames, the blade will be worn after several punchings, thereby causing the end face of the metal door and window frame to deform when the cylinder is pressed down for punching. Utility Model Content

[0004] 1. Technical issues to be solved

[0005] In view of the deficiencies in the prior art, the utility model provides a metal frame diagonal cutting device, which has the advantages of being able to quickly cut metal door and window frames while effectively avoiding frame deformation, thereby solving the problem of frame end face deformation caused by punching in the above technology.

[0006] (II) Technical solution

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a metal frame diagonal cutting device, comprising a calibration component, a cutting component and a regulating component, wherein the calibration component comprises an L-shaped plate, a calibration groove is provided on the L-shaped plate, an equipment mounting plate is provided at the inner corner of the L-shaped plate, a stable slide groove intercommunication with the calibration groove is provided on the equipment mounting plate, and calibration grooves intercommunication are provided at both ends of the L-shaped plate, the calibration groove is used to control the placement of the metal side plate to be cut, and the function of diagonal cutting is performed after calibration;

[0008] The cutting assembly includes a moving plate connected in a stable slide groove, a stable side plate is fixed on the moving plate, a cutting saw is installed between the stable side plates, and the side of the cutting saw fits in the calibration groove, and stable side plates are fixed on both sides of the moving plate. The two cutting saws are designed in a disc shape, and the center positions of the two sides are hinged between the stable side plates, so that the cutting saw can rotate and cut with the hinged position as the center;

[0009] The regulating component includes a mounting frame fixed at the bottom of the equipment mounting plate, an electric telescopic rod is fixed in the mounting frame, a linkage plate is fixed at the output end of the electric telescopic rod, a fixed rod is fixed at one end of the linkage plate, one end of the fixed rod is fixed to one end of the movable plate, and the mounting frame is used to maintain a distance between the electric telescopic rod and the bottom of the cutting saw to avoid installation conflicts between the two. At the same time, space is left on the mounting frame and the bottom of the equipment mounting plate, which can be used to store the cut miscellaneous materials for unified processing later.

[0010] As a further improvement of the above solution, a docking groove is provided in the calibration groove, a fixed side plate is sleeved in the docking groove, and the bottom of the fixed side plate is flush with the bottom of the docking groove;

[0011] Through the above technical solution, a docking groove is opened on one side of the calibration groove, and the docking groove is used to store the fixed side panel. When the fixed side panel is received in the docking groove, the front side of the fixed side panel is flush with the inner wall of the calibration groove, so that after the side panel of the metal frame is inserted into the groove body, the fixed side panel moves back and forth and fits against the side of the side panel, thereby achieving the function of fixing the side panels of different widths.

[0012] As a further improvement of the above solution, a fixing groove is provided at one end of the L-shaped plate, a positioning plate is sleeved in the fixing groove, a fixing hole is provided at the bottom of the fixing groove, and a fixing button is provided at the bottom of the positioning plate, and the fixing button is engaged in the fixing hole;

[0013] Through the above technical solution, the width of the fixing groove is consistent with the width of the calibration groove, so that when cutting an irregular metal side plate at one end, the positioning plate can be taken out so that the irregular end can be passed outward for cutting. When cutting a metal side plate with a smooth end face, the positioning plate is inserted into the fixing groove so that the fixing button enters the fixing hole. At this time, any end face can be attached to the positioning plate to achieve the effect of diagonal cutting.

[0014] As a further improvement of the above solution, a magnetic plate is embedded in the side of the positioning plate and adsorbed in the fixing groove;

[0015] Through the above technical solution, the magnetic suction plate has magnetic force and can be adsorbed on the inner wall of the fixing groove to achieve the function of reinforcing the positioning plate.

[0016] As a further improvement of the above solution, a connecting tube is fixed to the side of the L-shaped plate, a tension spring is fixed in the connecting tube, a connecting button is fixed at one end of the tension spring, the connecting button passes through the docking groove and is fixed at a corresponding position on the side of the fixed side plate;

[0017] Through the above technical solution, the connecting tube is threadedly connected to the side of the L-shaped plate to accommodate the tension spring. Under the push of the tension spring, the fixed side plate is pushed forward. Tension springs are fixed on the rear sides of both ends of the L-shaped plate, thereby improving the stability of the fixed side plate clamping the metal side plate.

[0018] As a further improvement of the above solution, a rotating cylinder is hingedly connected to the side of the L-shaped plate, and an adjusting screw is threadedly connected to the rotating cylinder, and the adjusting screw is fixed to one end of the moving plate;

[0019] Through the above technical solution, the inner diameter of the rotating cylinder is consistent with the diameter of the regulating screw. At the same time, a thread is provided on the inner side of the rotating cylinder, and it engages with the thread on the side of the regulating screw. When the cylinder is rotated clockwise, the regulating screw gradually moves into the cylinder under the action of the thread engagement, and when the cylinder is rotated counterclockwise, the regulating screw gradually moves out of the cylinder, thereby achieving the function of controlling the forward and backward movement of the fixed side plate.

[0020] As a further improvement of the above solution, a stabilizing convex strip is provided in the stabilizing slide groove along its length direction, and a stabilizing groove is provided on the side of the movable plate along its length direction, and the stabilizing convex strip is sleeved in the stabilizing groove;

[0021] Through the above technical solution, when the movable plate moves back and forth in the stabilizing slide groove, the stabilizing groove moves by friction on the side of the stabilizing convex strip, thereby increasing the stability of the movable plate moving in the stabilizing slide groove and preventing the movable plate from escaping from the stabilizing slide groove.

[0022] As a further improvement of the above solution, a driving motor is fixed inside the stabilizing side plate, and an output end of the driving motor passes through the stabilizing side plate and is fixed to the side of the cutting saw;

[0023] Through the above technical solution, the output end of the driving motor is fixed at the center position of the side of the cutting saw. When the driving motor is operated, its output end drives the cutting saw to rotate, thereby achieving the function of docking and cutting the metal frame plate.

[0024] As a further improvement of the above solution, a cutting groove penetrating the bottom is provided on the equipment mounting plate, and a cutting groove penetrating the bottom of the L-shaped plate is provided in the stabilizing slide groove, the cutting groove is in the middle of the cutting groove, and is inclined at 45 degrees with the L-shaped plate, and the side of the cutting saw is consistent with the width of the cutting groove;

[0025] Through the above technical solution, the cutting groove is located at the right angle of the L-shaped plate and is inclined at degrees, corresponding to the inner angle and the outer angle. When the cutting saw is cutting, the moving plate moves so that the saw blade moves in the cutting groove and the cutting groove, and at the same time, the waste generated by the cutting is discharged from the cutting groove to the bottom.

[0026] As a further improvement of the above solution, a pneumatic telescopic rod is installed at one end of the L-shaped plate, a pressing plate is fixed at one end of the pneumatic telescopic rod, and the bottom of the pressing plate is attached to the L-shaped plate;

[0027] Through the above technical solution, the pneumatic telescopic rod is connected to a controller, and its output end is controlled by the controller to move up and down. When the output end moves downward, the pressing plate moves downward and fits against the top surface of the metal frame, aligns and fixes it, thereby avoiding the problem of the metal side plate swinging up and down during cutting.

[0028] Compared with the prior art, the utility model provides a metal frame diagonal cutting device, which has the following beneficial effects:

[0029] 1. The metal frame diagonal cutting device is installed at a 45° angle with the L-shaped plate through a cutting saw, and is operated by an electric telescopic rod, so that its output end drives the fixed rod to move forward and backward through a linkage plate, so that the movable plate moves forward and backward in a stable slide groove, and under the drive of a driving motor, the cutting saw moves forward and backward in a cutting groove, so as to achieve a 45° bevel cutting of one end of the metal door and window side plate, thereby effectively ensuring the integrity of the end face cutting and avoiding deformation caused by cutting. At the same time, calibration grooves are provided at both ends of the L-shaped plate to achieve two-way rapid cutting, further improving the cutting efficiency.

[0030] 2. The metal frame diagonal cutting device, through the threaded engagement force between the rotating cylinder and the regulating screw, makes the fixed side plate translate in the calibration groove, so as to clamp the metal door and window frames of different widths, and through the up and down movement of the output end of the pneumatic telescopic rod, it can clamp and fix the door and window frames of different heights, further improving its stability during cutting. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 This is a schematic diagram of the overall front structure of the device of the utility model;

[0032] Figure 2 This is a schematic diagram of the overall rear view structure of the device of the utility model;

[0033] Figure 3 This is a schematic diagram of the overall structure of the L-shaped plate of the utility model;

[0034] Figure 4 This is a schematic diagram of the overall structure of the cutting assembly of the utility model;

[0035] Figure 5This is a schematic diagram of the overall structure of the positioning plate of the utility model;

[0036] Figure 6 This is a schematic diagram of the overall internal structure of the connecting tube of the utility model;

[0037] Figure 7 This is a schematic diagram of the connection structure between the rotating cylinder and the regulating screw rod of the utility model.

[0038] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0039] 1. Calibration assembly; 101. L-shaped plate; 102. Calibration groove; 103. Docking groove; 104. Fixed side plate; 105. Fixed groove; 106. Fixed hole; 107. Positioning plate; 108. Fixed button; 109. Magnetic plate; 110. Connecting cylinder; 111. Tension spring; 112. Connecting button; 113. Rotating cylinder; 114. Adjusting screw; 115. Equipment mounting plate; 116. Stable slide groove; 117. Stable convex strip; 118. Cutting groove; 119. Pneumatic telescopic rod; 120. Pressing plate;

[0040] 2. Cutting assembly; 201. Moving plate; 202. Stabilizing groove; 203. Cutting groove; 204. Stabilizing side plate; 205. Driving motor; 206. Cutting saw;

[0041] 3. Control assembly; 301. Mounting frame; 302. Electric telescopic rod; 303. Linking plate; 304. Fixing rod. DETAILED DESCRIPTION

[0042] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0043] Embodiment 1

[0044] See also Figure 1-7 As shown, the metal frame diagonal cutting device proposed in this embodiment includes a calibration component 1, a cutting component 2 and a regulating component 3, wherein the calibration component 1 includes an L-shaped plate 101, a calibration groove 102 is provided on the L-shaped plate 101, an equipment mounting plate 115 is provided at the inner corner of the L-shaped plate 101, a stable sliding groove 116 which is interconnected with the calibration groove 102 is provided on the equipment mounting plate 115, and the two ends of the L-shaped plate are provided with interconnected calibration grooves 102, and the calibration grooves 102 are used to control the placement of the metal side plate to be cut, and wait for calibration before performing diagonal cutting;

[0045] The cutting assembly 2 includes a moving plate 201 connected in a stable slide groove 116, a stable side plate 204 is fixed on the moving plate 201, a cutting saw 206 is installed between the stable side plates 204, and the side of the cutting saw 206 fits in the calibration groove 102, and the two sides of the moving plate 201 are fixed with stable side plates 204, the two cutting saws 206 are designed in a disc shape, and the center positions of the two sides are hinged between the stable side plates 204, so that the cutting saw 206 can rotate and cut with the hinged position as the center;

[0046] The regulating component 3 includes a mounting frame 301 fixed at the bottom of the equipment mounting plate 115, an electric telescopic rod 302 is fixed in the mounting frame 301, a linkage plate 303 is fixed to the output end of the electric telescopic rod 302, a fixing rod 304 is fixed to one end of the linkage plate 303, and one end of the fixing rod 304 is fixed to one end of the movable plate 201. The mounting frame 301 is used to keep a distance between the electric telescopic rod 302 and the bottom of the cutting saw 206 to avoid installation conflicts between the two. At the same time, space is left between the mounting frame 301 and the bottom of the equipment mounting plate 115, which can be used to store the cut miscellaneous materials for unified processing later.

[0047] The working principle of the metal frame diagonal cutting device proposed in this embodiment is as follows: when in use, the side plate of the metal frame is inserted into the calibration groove 102 from any end of the L-shaped plate 101, and the rotating cylinder 113 is rotated, so that the inner thread and the side thread of the regulating screw 114 are meshed, so that the regulating screw 114 pushes the fixed side plate 104 forward to make it close to the side of the side plate of the metal frame and fully fix it, and under the push of the tension spring 111, the stability of the clamping of the fixed side plate 104 on the side plate is ensured, and then the output end of the pneumatic telescopic rod 119 is controlled to move downward, so that the pressing plate 120 is close to the top surface of the metal side plate, and at the same time, the front end plane of the metal side plate is ensured to be in contact with the corresponding surface of the positioning plate 107. At this time, the output end of the electric telescopic rod 302 is controlled to move internally, and the fixed side plate 104 is driven by the linkage plate 303. The fixed rod 304 moves at the same time, and the fixed rod 304 pushes the movable plate 201, so that the movable plate 201 moves forward in the stable slide groove 116. At the same time, the driving motor 205 is controlled to operate so that its output end drives the cutting saw 206 to rotate. As the movable plate 201 gradually moves forward, the cutting saw 206 cuts one end of the metal side plate at an angle of 45 degrees. After cutting, the output end of the electric telescopic rod 302 automatically moves inward, so that the movable plate 201 returns to the initial position. At this time, the cut metal side plate can be removed. When cutting the irregular end face of the metal side plate, the positioning plate 107 is taken out, so that the fixing button 108 at the bottom is separated from the fixing hole 106, and then the irregular end is passed through the fixing groove 105 and fixed, and the bottom after clamping is repeated for cutting.

[0048] Furthermore, a docking groove 103 is provided in the calibration groove 102, a fixed side plate 104 is sleeved in the docking groove 103, and the bottom of the fixed side plate 104 is flush with the bottom of the docking groove 103;

[0049] More specifically, a docking groove 103 is provided on one side of the calibration groove 102, and the docking groove 103 is used to accommodate the fixed side plate 104. When the fixed side plate 104 is received in the docking groove 103, the front side of the fixed side plate 104 is flush with the inner wall of the calibration groove 102, so that after the side plate of the metal frame is inserted into the groove body, it can be moved back and forth by the fixed side plate 104 and fit on the side of the side plate, thereby achieving the function of fixing the side plates of different widths.

[0050] Furthermore, a fixing groove 105 is formed at one end of the L-shaped plate 101, a positioning plate 107 is sleeved in the fixing groove 105, a fixing hole 106 is formed at the bottom of the fixing groove 105, and a fixing button 108 is provided at the bottom of the positioning plate 107, and the fixing button 108 is engaged in the fixing hole 106;

[0051] More specifically, the width of the fixing groove 105 matches the width of the calibration groove 102, so that when cutting a metal side plate with an irregular end, the positioning plate 107 can be taken out so that the irregular end can be passed outward for cutting. When cutting a metal side plate with a smooth end face, the positioning plate 107 is inserted into the fixing groove 105 so that the fixing button 108 enters the fixing hole 106. At this time, any end face can be attached to the positioning plate 107 to achieve the effect of diagonal cutting.

[0052] Furthermore, a magnetic plate 109 is embedded in the side of the positioning plate 107 and is adsorbed in the fixing groove 105;

[0053] More specifically, the magnetic attraction plate 109 has magnetic force and can be adsorbed on the inner wall of the fixing groove 105 to reinforce the positioning plate 107 .

[0054] Furthermore, a connecting tube 110 is fixed to the side of the L-shaped plate 101, a tension spring 111 is fixed in the connecting tube 110, a connecting button 112 is fixed at one end of the tension spring 111, the connecting button 112 passes through the docking groove 103, and is fixed at a corresponding position on the side of the fixed side plate 104;

[0055] More specifically, the connecting tube 110 is threadedly connected to the side of the L-shaped plate 101 for housing the tension spring 111. Pushed by the tension spring 111, the fixed side plate 104 is pushed forward. The tension springs 111 are fixed to the rear sides of both ends of the L-shaped plate 101, thereby improving the stability of the fixed side plate 104 clamping the metal side plate.

[0056] Furthermore, a rotating cylinder 113 is hingedly connected to the side of the L-shaped plate 101, and an adjusting screw 114 is threadedly connected to the rotating cylinder 113, and the adjusting screw 114 is fixed to one end of the moving plate 201;

[0057] More specifically, the inner diameter of the rotating cylinder 113 matches the diameter of the regulating screw 114. At the same time, a thread is provided on the inner side of the rotating cylinder 113, and meshes with the thread on the side of the regulating screw 114. When the cylinder body is rotated clockwise, the regulating screw 114 gradually moves into the cylinder body under the action of the thread engagement, and when the cylinder body is rotated counterclockwise, the regulating screw 114 gradually moves out of the cylinder body, thereby achieving the function of controlling the forward and backward movement of the fixed side plate 104.

[0058] Furthermore, a stabilizing ridge 117 is provided in the stabilizing slide groove 116 along its length direction, and a stabilizing groove 202 is provided on the side of the movable plate 201 along its length direction, and the stabilizing ridge 117 is sleeved in the stabilizing groove 202;

[0059] More specifically, when the movable plate 201 moves back and forth in the stabilizing groove 116, the stabilizing groove 202 moves by friction on the side of the stabilizing protrusion 117, thereby increasing the stability of the movable plate 201 in the stabilizing groove 116 and preventing the movable plate 201 from escaping from the stabilizing groove 116.

[0060] Furthermore, a driving motor 205 is fixed inside the stabilizing side plate 204, and an output end of the driving motor 205 passes through the stabilizing side plate 204 and is fixed to the side of the cutting saw 206;

[0061] More specifically, the output end of the driving motor 205 is fixed at the center position of the side of the cutting saw 206. When the driving motor 205 is in operation, the output end drives the cutting saw 206 to rotate, thereby achieving the function of docking and cutting the metal frame plate.

[0062] Furthermore, the equipment mounting plate 115 is provided with a cutting groove 203 penetrating the bottom, and the stabilizing slide groove 116 is provided with a cutting groove 118 penetrating the bottom of the L-shaped plate 101, the cutting groove 118 is located in the middle of the cutting groove 203, and is inclined at 45 degrees with the L-shaped plate 101, and the side of the cutting saw 206 is consistent with the width of the cutting groove 203;

[0063] More specifically, the cutting groove 203 is located at a right angle to the L-shaped plate 101 and is inclined at 45 degrees, corresponding to the inner angle and the outer angle. When the cutting saw 206 is cutting, the movable plate 201 moves, so that the saw blade moves in the cutting groove 203 and the cutting groove 118, and at the same time, the waste generated by the cutting is discharged from the cutting groove 118 to the bottom.

[0064] Furthermore, a pneumatic telescopic rod 119 is installed at one end of the L-shaped plate, a pressing plate 120 is fixed at one end of the pneumatic telescopic rod 119, and the bottom of the pressing plate 120 is attached to the L-shaped plate 101;

[0065] More specifically, the pneumatic telescopic rod 119 is connected to a controller, and its output end is controlled by the controller to move up and down. When the output end moves downward, the pressing plate 120 moves downward and fits against the top surface of the metal frame, aligning and fixing it, thereby avoiding the problem of the metal side plate swinging up and down during cutting.

[0066] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A metal frame diagonal cutting device, characterized in that: It includes a calibration component, a cutting component and a regulating component. The calibration component includes an L-shaped plate, a calibration groove is provided on the L-shaped plate, an equipment installation plate is provided at the inner corner of the L-shaped plate, and a stable sliding groove is provided on the equipment installation plate and communicates with the calibration groove; The cutting assembly includes a moving plate connected in a stable slide groove, a stable side plate is fixed on the moving plate, a cutting saw is installed between the stable side plates, and the side of the cutting saw fits in the calibration groove; The regulating component includes a mounting frame fixed at the bottom of the equipment mounting plate, an electric telescopic rod is fixed in the mounting frame, a linkage plate is fixed at the output end of the electric telescopic rod, a fixed rod is fixed at one end of the linkage plate, and one end of the fixed rod is fixed to one end of the movable plate.

2. A metal frame diagonal cutting device according to claim 1, characterized in that: A docking groove is provided in the calibration groove, a fixed side plate is sleeved in the docking groove, and the bottom of the fixed side plate is flush with the bottom of the docking groove.

3. A metal frame diagonal cutting device according to claim 1, characterized in that: One end of the L-shaped plate is provided with a fixing groove, a positioning plate is sleeved in the fixing groove, a fixing hole is provided at the bottom of the fixing groove, and a fixing button is provided at the bottom of the positioning plate, and the fixing button is engaged in the fixing hole.

4. A metal frame diagonal cutting device according to claim 3, characterized in that: A magnetic plate is embedded in the side of the positioning plate and adsorbed in the fixing groove.

5. The metal frame diagonal cutting device according to claim 3, characterized in that: A connecting tube is fixed on the side of the L-shaped plate, a tension spring is fixed in the connecting tube, a connecting button is fixed at one end of the tension spring, the connecting button passes through the docking groove and is fixed at a corresponding position on the side of the fixed side plate.

6. A metal frame diagonal cutting device according to claim 5, characterized in that: A rotating cylinder is hinged on the side of the L-shaped plate, and an adjusting screw is threadedly connected inside the rotating cylinder. The adjusting screw is fixed on one end of the moving plate.

7. The metal frame diagonal cutting device according to claim 1, characterized in that: A stabilizing convex strip is arranged in the stabilizing slide groove along its length direction, and a stabilizing groove is opened on the side of the movable plate along its length direction, and the stabilizing convex strip is sleeved in the stabilizing groove.

8. The metal frame diagonal cutting device according to claim 1, characterized in that: A driving motor is fixed inside the stabilizing side plate, and an output end of the driving motor passes through the stabilizing side plate and is fixed on the side of the cutting saw.

9. The metal frame diagonal cutting device according to claim 1, characterized in that: A cutting groove running through the bottom is provided on the equipment mounting plate, and a cutting groove running through the bottom of the L-shaped plate is provided in the stabilizing slide groove. The cutting groove is located in the middle of the cutting groove and is inclined at 45 degrees to the L-shaped plate. At the same time, the side of the cutting saw matches the width of the cutting groove.

10. A metal frame diagonal cutting device according to claim 9, characterized in that: A pneumatic telescopic rod is installed at one end of the L-shaped plate, a pressing plate is fixed at one end of the pneumatic telescopic rod, and the bottom of the pressing plate is attached to the L-shaped plate.

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