A steel plate bending machine for the production of cotton candy robots

Abstract

The present invention relates to the field of steel plate bending, and in particular to a steel plate bending machine for producing cotton candy robots. The technical problem is that in the process of bending steel plates, the bending efficiency is low and the position of the steel plates needs to be adjusted multiple times, resulting in deviations in the shape of the bent steel plates and troublesome removal. A steel plate bending machine for producing cotton candy robots includes a supporting chassis, a slide rail bracket, a mounting frame, etc. A steel plate is placed on the supporting chassis, and two slide rail brackets are fixedly connected to the supporting chassis. The two slide rail brackets are symmetrically arranged, and a mounting frame is fixedly connected between the tops of the two slide rail brackets. The straight plate frame located below and the two side plate frames located below move downward through the steel plate extrusion lifting plate, and the rotating roller and the side plate frame will jointly squeeze the steel plate, so that the steel plate is bent at two right angles, and the top frame squeezes the top rod, so that the top rod swing frame and the pressing plate rotate upward at a certain angle, and the pressing plate presses and limits the side of the steel plate to make the bent shape of the steel plate more standard.

Description

Technical Field

[0001] The invention relates to the field of steel plate bending, and in particular to a steel plate bending machine for producing cotton candy robots. Background Art

[0002] With the development of the times and the advancement of technology, fancy marshmallows can be made through programming and other methods. The emergence of marshmallow robots has realized the intelligent production of fancy marshmallows.

[0003] The shell of the marshmallow robot is a quadrilateral frame formed by bending a steel plate. Currently, in the process of bending the steel plate, it usually takes four bends to bend the steel plate into a quadrilateral frame. The bending efficiency is low and the position of the steel plate needs to be adjusted multiple times. It is difficult to bend it into a standard shape, which may cause deviations in the shape of the steel plate after bending. In addition, there are convex strips on the edge of the steel plate and the steel plate is in close contact with the bending mechanism. After bending, the steel plate needs to be spread open first and then taken out, which is troublesome to take out. Summary of the invention

[0004] In view of the current problems in which, during the process of bending steel plates, the bending efficiency is low and the position of the steel plates needs to be adjusted multiple times, resulting in deviations in the shape of the bent steel plates and difficulty in removing them, the present invention provides a steel plate bending machine for the production of marshmallow robots, which can improve the bending efficiency of steel plates and can press and limit the steel plates to improve the bending quality, and can also facilitate the removal of the bent steel plates.

[0005] A steel plate bending machine for producing a marshmallow robot comprises a supporting chassis, a slide rail bracket, a mounting frame, an electric push rod, an inner support assembly, an extrusion assembly, a pressing assembly and a secondary bending assembly. A steel plate is placed on the supporting chassis, and two slide rail brackets are fixedly connected to the supporting chassis. The two slide rail brackets are symmetrically arranged. A mounting frame is fixedly connected between the tops of the two slide rail brackets, and an electric push rod is fixedly connected to the upper part of the mounting frame. An inner support assembly is arranged on the telescopic rod of the electric push rod, an extrusion assembly is arranged on the supporting chassis, a pressing assembly is arranged on the extrusion assembly, and a secondary bending assembly is arranged on the pressing assembly. The inner support assembly and the extrusion assembly jointly perform initial extrusion and bending on the steel plate, the pressing assembly is used to press and limit the side of the steel plate, and the secondary bending assembly is used to perform secondary extrusion and bending on the steel plate, so that the steel plate is bent into a frame with four surfaces.

[0006] Further explanation, the inner support assembly includes a limit frame, a straight plate frame, a side plate frame, a right-angle frame, an extrusion frame, a torsion spring 1, a lever and a guide frame. The bottom end of the telescopic rod of the electric push rod is fixedly connected to the limit frame. Two straight plate frames, four side plate frames and two right-angle frames are slidably connected to the limit frame. The two straight plate frames are symmetrically arranged, and the two right-angle frames are symmetrically arranged. The extrusion frame is rotatably connected in the limit frame. The extrusion frame is provided with eight limit slots. Two straight plate frames, four side plate frames and two right-angle frames are respectively slidably connected to the eight limit slots on the extrusion frame. A torsion spring 1 is connected between the extrusion frame and the limit frame. A lever is fixedly connected to one side of the extrusion frame. A guide frame is fixedly connected between the lower parts of the two slide rail brackets.

[0007] Further description: a slope is provided on the top of the guide frame.

[0008] To further explain, the extrusion assembly includes a lifting plate, a supporting spring, a push plate and a rotating roller. The lifting plate is slidably connected to the upper part of the supporting base frame. The top of the lifting plate is in contact with the bottom of the steel plate. Four supporting springs are connected between the lifting plate and the supporting base frame. Two push plates are fixedly connected to the upper part of the supporting base frame. The two push plates are symmetrically arranged and are respectively located on both sides of the lifting plate. Two rotating rollers are rotatably connected to the top of each push plate.

[0009] Further explanation: the pressing assembly includes a swing frame, a pressing plate, a top frame and a push rod. Two swing frames are rotatably connected to the lifting plate. The two swing frames are symmetrically arranged. Two torsion springs are connected between the two swing frames and the lifting plate. Pressing plates are provided on the two swing frames. The two pressing plates are located under the steel plate. Two top frames are fixedly connected to the upper part of the supporting base frame. Push rods are fixedly connected to the two swing frames. The push rods are located above the top frames.

[0010] To further explain, the secondary bending assembly includes a push frame, a rotating rod, a return spring and a bending frame. Each pressing plate is slidably connected to a push frame, and each push frame is rotatably connected to two rotating rods on the top. Two return springs are connected between the push frame and the pressing plate, and a bending frame is provided on the top of the two slide rail brackets.

[0011] Further description, it also includes a limit bracket and a compression spring. Each pressing plate is slidably connected to two limit brackets, and two compression springs are connected between each limit bracket and the pressing plate.

[0012] Further description, it also includes a support plate and a magnetic attraction plate. The support plate is fixedly connected to the upper part of the mounting frame, and the magnetic attraction plate is fixedly connected to the support plate.

[0013] The beneficial effects of the present invention are as follows: 1. By starting the extension of the telescopic rod of the electric push rod, the telescopic rod of the electric push rod drives the limit frame to move downward, thereby driving the lever to move downward, and the inclined surface on the top of the guide frame squeezes the lever to rotate upward by a certain angle, and the lever drives the extrusion frame to rotate a certain angle, and the extrusion frame squeezes the straight plate frame, the side plate frame and the right-angle frame through the guide groove, so that the straight plate frame, the side plate frame and the right-angle frame are stretched outward, and then the straight plate frame located below and the two side plate frames located below will move downward through the steel plate extrusion lifting plate, and the rotating roller and the side plate frame will jointly squeeze the steel plate, thereby performing the initial extrusion on the steel plate, so that the steel plate is bent into two right angles, and the top frame squeezes the top rod, so that the top rod swing frame and the pressing plate rotate upward by a certain angle, and the pressing plate presses and limits the side edges of the steel plate, so that the bent shape of the steel plate is more standard, thereby improving the bending quality.

[0014] 2. The pressing plate rotates upward at a certain angle, which will drive the push frame, the rotating rod and the return spring to rotate at a certain angle. The push frame will rotate to the top of the bending frame, and then the telescopic rod of the electric push rod will continue to extend, and the push frame will move downward until it contacts the bending frame. The two bending frames squeeze the two push frames respectively and move towards each other. The push frame drives the rotating rod to move, so that the push frame and the rotating rod squeeze the steel plate, so that the steel plate is bent at two right angles again, so that the steel plate can be bent into a four-sided frame, thereby improving the bending efficiency of the steel plate.

[0015] 3. The worker adjusts the telescopic rod of the electric push rod to retract, thereby driving the limit frame, side plate frame, right-angle frame, extrusion frame, torsion spring 1 and the lever to move upward. The torsion spring 1 resets and drives the extrusion frame to rotate in the opposite direction and reset. The extrusion frame drives the straight plate frame, the side plate frame and the right-angle frame to retract and reset inward, so that the gap between the bent steel plate and the straight plate frame, the side plate frame and the right-angle frame is increased. Then the worker picks up the bent steel plate, so that the convex strip on the edge of the steel plate is out of contact with the straight plate frame and the two side plate frames above, which is convenient for the worker to take out the bent steel plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention.

[0017] Figure 2 It is a partial three-dimensional structural schematic diagram of the extrusion assembly and the pressing assembly of the present invention.

[0018] Figure 3 It is a schematic diagram of the three-dimensional structure of the support plate and the magnetic attraction plate of the present invention.

[0019] Figure 4 It is a partial three-dimensional structural schematic diagram of the electric push rod and the inner support assembly of the present invention.

[0020] Figure 5 It is a partial three-dimensional structural schematic diagram of the inner side support assembly of the present invention.

[0021] Figure 6 It is a schematic diagram of the three-dimensional structure of the extrusion assembly, the pressing assembly and the secondary bending assembly of the present invention.

[0022] Figure 7 It is a partial three-dimensional structural schematic diagram of the pressing assembly and the secondary bending assembly of the present invention.

[0023] Figure 8 For the present invention Figure 3 Schematic diagram of the enlarged three-dimensional structure of A in the middle.

[0024] Fig. 9 It is a schematic diagram of the split three-dimensional structure of the inner support assembly and the secondary bending assembly of the present invention.

[0025] Markings in the accompanying drawings: 1: supporting base frame, 60: steel plate, 2: sliding rail bracket, 3: mounting frame, 4: electric push rod, 51: limiting frame, 52: straight plate frame, 53: side plate frame, 54: right-angle frame, 55: extrusion frame, 56: torsion spring 1, 57: lever, 58: guide frame, 61: lifting plate, 62: supporting spring, 63: push plate, 64: rotating roller, 71: swing frame, 711: torsion spring 2, 72: pressing plate, 73: top frame, 74: push rod, 81: push frame, 82: rotating rod, 83: reset spring, 84: bending frame, 91: limiting support frame, 92: extrusion spring, 101: support plate, 102: magnetic suction plate. DETAILED DESCRIPTION

[0026] The present invention will be further described below in conjunction with specific embodiments. The illustrative embodiments and descriptions of the present invention are used to explain the present invention but are not intended to limit the present invention.

[0027] Embodiment 1: A steel plate bending machine for producing cotton candy robots, such as Figure 1-Figure 9 As shown, it includes a supporting base frame 1, a slide rail bracket 2, a mounting frame 3, an electric push rod 4, an inner support component, an extrusion component, a pressing component and a secondary bending component. A steel plate 60 is placed on the supporting base frame 1. Two slide rail brackets 2 are installed on the supporting base frame 1 by rivets. The two slide rail brackets 2 are symmetrically arranged. A mounting frame 3 is fixed between the tops of the two slide rail brackets 2. An electric push rod 4 is fixed to the upper part of the mounting frame 3. The electric push rod 4 is vertically arranged. An inner support component is provided on the telescopic rod of the electric push rod 4. An extrusion component is provided on the supporting base frame 1. A pressing component is provided on the extrusion component. A secondary bending component is provided on the pressing component. The inner support component and the extrusion component jointly perform initial extrusion and bending on the steel plate 60. The pressing component is used to press and limit the side of the steel plate 60. The secondary bending component is used to perform secondary extrusion and bending on the steel plate 60, so that the steel plate 60 is bent into a frame with four surfaces.

[0028] The inner support assembly includes a limit frame 51, a straight frame 52, a side frame 53, a right-angle frame 54, an extrusion frame 55, a torsion spring 56, a lever 57 and a guide frame 58. The bottom end of the telescopic rod of the electric push rod 4 is fixedly connected to the limit frame 51. The limit frame 51 is slidably connected to two straight frames 52, four side frames 53 and two right-angle frames 54. The two straight frames 52 are symmetrically arranged, and the two right-angle frames 54 are symmetrically arranged. The two right-angle frames 54 are used to limit the steel plate 60. The extrusion frame 55 is rotatably connected inside the limiting frame 51. The extrusion frame 55 is provided with eight limiting grooves. The two straight plate frames 52, the four side plate frames 53 and the two right-angle frames 54 are respectively slidably connected to the eight limiting grooves on the extrusion frame 55. A torsion spring 56 is connected between the extrusion frame 55 and the limiting frame 51. A lever 57 is welded to one side of the extrusion frame 55. A guide frame 58 is fixedly connected between the lower parts of the two slide rail brackets 2.

[0029] The top of the guide frame 58 is provided with an inclined surface, and the lever 57 will contact the inclined surface on the top of the guide frame 58 when it moves downward.

[0030] The extrusion assembly includes a lifting plate 61, a supporting spring 62, a push plate 63 and a rotating roller 64. The lifting plate 61 is slidably connected to the upper part of the supporting base frame 1. The top of the lifting plate 61 contacts the bottom of the steel plate 60. Four supporting springs 62 are connected between the lifting plate 61 and the supporting base frame 1. Two push plates 63 are fixedly connected to the upper part of the supporting base frame 1. The two push plates 63 are symmetrically arranged and are respectively located on both sides of the lifting plate 61. The push plates 63 are used to squeeze the steel plate 60 so that the steel plate 60 is bent. Two rotating rollers 64 are rotatably connected to the top of each push plate 63.

[0031] The pressing assembly includes a swing frame 71, a pressing plate 72, a top frame 73 and a push rod 74. Two swing frames 71 are rotatably connected to the lifting plate 61. The two swing frames 71 are symmetrically arranged. Torsion springs 711 are connected between the two swing frames 71 and the lifting plate 61. Pressing plates 72 are provided on the two swing frames 71. The two pressing plates 72 are located below the steel plate 60. The pressing plates 72 are used to press and limit the steel plate 60. Two push rods 73 are fixedly connected to the upper part of the supporting base frame 1. Push rods 74 are fixedly connected to the two swing frames 71. The push rods 74 are located above the top frames 73.

[0032] The secondary bending assembly includes a push frame 81, a rotating rod 82, a return spring 83 and a bending frame 84. Each pressing plate 72 is slidably connected to a push frame 81, and the push frame 81 is used to extrude the steel plate 60. The top of each push frame 81 is rotatably connected to two rotating rods 82. Two return springs 83 are connected between the push frame 81 and the pressing plate 72. A bending frame 84 is provided on the upper part of the two slide rail brackets 2.

[0033] First, the worker places the divided steel plate 60 on the top between the supporting base frame 1 and the lifting plate 61, and then starts the telescopic rod of the electric push rod 4 to extend, and the telescopic rod of the electric push rod 4 drives the limit frame 51 to move downward, and the limit frame 51 drives the straight plate frame 52, the side plate frame 53, the right-angle frame 54, the extrusion frame 55, the torsion spring 1 56 and the lever 57 to move downward, and the lever 57 moves downward to contact the inclined surface at the top of the guide frame 58, and the lever 57 continues to move downward, and the inclined surface at the top of the guide frame 58 squeezes the lever 57 to rotate upward by a certain angle, and the lever 57 drives the extrusion frame 55 to rotate by a certain angle, and the extrusion frame 55 squeezes the straight plate frame 52, the side plate frame 53 and the straight plate frame 55 through the guide groove. The angle frame 54 causes the straight plate frame 52, the side plate frame 53 and the right-angle frame 54 to be stretched outward, and then the lever 57 continues to move downward along the guide frame 58, and the straight plate frame 52 at the bottom and the two side plate frames 53 at the bottom will contact the steel plate 60, and the straight plate frame 52 at the bottom and the two side plate frames 53 at the bottom will squeeze the lifting plate 61 downward through the steel plate 60, and the steel plate 60 will contact the rotating roller 64, and the rotating roller 64 and the side plate frame 53 will squeeze the steel plate 60 together, thereby performing the initial squeezing on the steel plate 60, so that the steel plate 60 is bent into two right angles, and the lifting plate 61 moves downward to drive the swing frame 71, the pressing plate 72 and the push rod 74 to move downward, and the push rod 74 will When the pressing plate 72 is in contact with the top frame 73 and the top frame 73 squeezes the top rod 74, the top rod 74 swings the frame 71 and the pressing plate 72 to rotate upward by a certain angle, and the pressing plate 72 contacts the side of the steel plate 60, which can press and limit the side of the steel plate 60, so that the bending shape of the steel plate 60 is more standardized and the bending quality is improved; the pressing plate 72 rotates upward by a certain angle to drive the push frame 81, the rotating rod 82 and the return spring 83 to rotate by a certain angle, and the push frame 81 rotates to the top of the bending frame 84, and then the telescopic rod of the electric push rod 4 continues to extend, thereby driving the limiting frame 51, the side plate frame 53, the right-angle frame 54, the extrusion frame 55, the torsion spring 56 and the lever 57 to continue to move downward, The straight plate frame 52 below and the two side plate frames 53 below continue to squeeze the lifting plate 61 to move downward, and the lifting plate 61 drives the swing frame 71, the pressing plate 72, the top rod 74, the push frame 81, the rotating rod 82 and the return spring 83 to continue to move downward, and the push frame 81 will move downward until it contacts with the bending frame 84, and the push frame 81 continues to move downward. The two bending frames 84 respectively squeeze the two push frames 81 to move towards each other, and the push frame 81 drives the rotating rod 82 to move, so that the push frame 81 and the rotating rod 82 squeeze the steel plate 60, so that the steel plate 60 is bent at two right angles again, so that the steel plate 60 is bent into a four-sided frame, thereby improving the bending efficiency of the steel plate 60.

[0034] Then the worker adjusts the telescopic rod of the electric push rod 4 to retract, thereby driving the limit frame 51, the side plate frame 53, the right-angle frame 54, the extrusion frame 55, the torsion spring 1 56 and the lever 57 to move upward, the guide frame 58 no longer squeezes the lever 57, the torsion spring 1 56 resets to drive the extrusion frame 55 to rotate in the opposite direction to reset, the extrusion frame 55 drives the straight plate frame 52, the side plate frame 53 and the right-angle frame 54 to retract inward to reset, the support spring 62 resets to drive the lifting plate 61 to reset, the torsion spring 2 711 resets to drive the swing frame 71 and the pressing The plate 72 is reset, and the pressing plate 72 drives the pushing frame 81, the rotating rod 82 and the reset spring 83 to reset, so that the straight plate frame 52, the side plate frame 53 and the right-angle frame 54 are retracted inward after bending, so that the gap between the bent steel plate 60 and the straight plate frame 52, the side plate frame 53 and the right-angle frame 54 is increased, and then the worker lifts up the bent steel plate 60, so that the convex strips on the edge of the steel plate 60 are out of contact with the straight plate frame 52 located above and the two side plate frames 53 located above, so that the worker can take out the bent steel plate 60 conveniently.

[0035] Embodiment 2: Based on embodiment 1, Figure 6-Figure 9 As shown, it also includes a limit bracket 91 and a compression spring 92. Two limit brackets 91 are slidably connected to each pressing plate 72. The limit brackets 91 are used to flatten the steel plate 60. Two compression springs 92 are connected between each limit bracket 91 and the pressing plate 72.

[0036] The pressing plate 72 rotates upward by a certain angle, which will drive the limiting bracket 91 and the extrusion spring 92 to rotate upward by a certain angle. The limiting bracket 91 will first contact the side of the steel plate 60, and then the limiting bracket 91 continues to rotate, and the steel plate 60 squeezes the limiting bracket 91 and moves obliquely upward. The extrusion spring 92 is stretched, and then the pressing plate 72 contacts the steel plate 60, so that the limiting bracket 91 applies an upward force to the side of the steel plate 60, thereby flattening the steel plate 60, making the steel plate 60 flatter after bending, and further improving the bending quality.

[0037] Embodiment 3: Based on embodiment 2, Figure 3 As shown, it also includes a support plate 101 and a magnetic attraction plate 102 . The support plate 101 is fixedly connected to the upper part of the mounting frame 3 . The magnetic attraction plate 102 is fixedly connected to the support plate 101 . The magnetic attraction plate 102 is used to adsorb the steel plate 60 .

[0038] When the telescopic rod of the electric push rod 4 contracts, the straight plate frame 52, the side plate frame 53 and the right-angle frame 54 move upward, thereby driving the bent steel plate 60 to move upward, and the magnetic plate 102 will attract the bent steel plate 60, so that the bent steel plate 60 is out of contact with the straight plate frame 52 located above and the two side plate frames 53 located above, avoiding the straight plate frame 52 located above and the two side plate frames 53 located above blocking the convex strips on the edge of the steel plate 60, and then the worker can take away the bent steel plate 60, further improving the convenience of removing the steel plate 60.

[0039] It should be understood that the above description is only for exemplary purposes and is not meant to limit the present invention. Those skilled in the art will appreciate that variations of the present invention will be included within the scope of the claims herein.

Claims

1. A steel plate bending machine for the production of cotton candy robots, characterized by: The invention comprises a support base frame (1), a slide rail bracket (2), a mounting frame (3), an electric push rod (4), an inner support component, an extrusion component, a pressing component and a secondary bending component. A steel plate (60) is placed on the support base frame (1). Two slide rail brackets (2) are fixedly connected to the support base frame (1). The two slide rail brackets (2) are symmetrically arranged. A mounting frame (3) is fixedly connected between the tops of the two slide rail brackets (2). An electric push rod (4) is fixedly connected to the upper part of the mounting frame (3). An inner support component is arranged on the telescopic rod of the electric push rod (4). An extrusion component is arranged on the support base frame (1). A pressing component is arranged on the extrusion component. A secondary bending component is arranged on the pressing component. The inner support component and the extrusion component are used to perform initial extrusion and bending on the steel plate (60) together. The pressing component is used to press and limit the side of the steel plate (60). The secondary bending component is used to perform secondary extrusion and bending on the steel plate (60), so that the steel plate (60) is bent into a frame with four faces. The inner support assembly comprises a limit frame (51), a straight frame (52), a side frame (53), a right-angle frame (54), an extrusion frame (55), a torsion spring (56), a lever (57) and a guide frame (58). The bottom end of the telescopic rod of the electric push rod (4) is fixedly connected to the limit frame (51). Two straight frames (52), four side frames (53) and two right-angle frames (54) are slidably connected to the limit frame (51). The two straight frames (52) are symmetrically arranged, and the two right-angle frames (54) are symmetrically arranged. The limiting frame (51) is symmetrically arranged, the limiting frame (51) is rotatably connected to the extrusion frame (55), the extrusion frame (55) is provided with eight limiting grooves, the two straight plate frames (52), the four side plate frames (53) and the two right angle frames (54) are respectively slidably connected to the eight limiting grooves on the extrusion frame (55), a torsion spring (56) is connected between the extrusion frame (55) and the limiting frame (51), a lever (57) is fixedly connected to one side of the extrusion frame (55), and a guide frame (58) is fixedly connected between the lower parts of the two slide rail brackets (2); The top of the guide frame (58) is provided with an inclined surface; The extrusion assembly comprises a lifting plate (61), a supporting spring (62), a push plate (63) and a rotating roller (64); the upper portion of the supporting base frame (1) is slidably connected to the lifting plate (61); the top of the lifting plate (61) contacts the bottom of the steel plate (60); four supporting springs (62) are connected between the lifting plate (61) and the supporting base frame (1); two push plates (63) are fixedly connected to the upper portion of the supporting base frame (1); the two push plates (63) are symmetrically arranged; the two push plates (63) are respectively located on both sides of the lifting plate (61); and the top of each push plate (63) is rotatably connected to two rotating rollers (64); The pressing assembly comprises a swing frame (71), a pressing plate (72), a top frame (73) and a top rod (74); the lifting plate (61) is rotatably connected to two swing frames (71); the two swing frames (71) are symmetrically arranged; a torsion spring (711) is connected between the two swing frames (71) and the lifting plate (61); the two swing frames (71) are provided with a pressing plate (72); the two pressing plates (72) are located below the steel plate (60); the upper part of the supporting bottom frame (1) is fixedly connected to two top frames (73); the two swing frames (71) are fixedly connected to a top rod (74); the top rod (74) is located above the top frame (73); The secondary bending assembly comprises a push frame (81), a rotating rod (82), a return spring (83) and a bending frame (84); each pressing plate (72) is slidably connected to a push frame (81); the top of each push frame (81) is rotatably connected to two rotating rods (82); two return springs (83) are connected between the push frame (81) and the pressing plate (72); and the upper parts of the two slide rail brackets (2) are provided with a bending frame (84).

2. The steel plate bending machine for producing cotton candy robots according to claim 1 is characterized by: It also includes a limit stop bracket (91) and a compression spring (92), wherein each pressing plate (72) is slidably connected to two limit stop brackets (91), and two compression springs (92) are connected between each limit stop bracket (91) and the pressing plate (72).

3. The steel plate bending machine for producing cotton candy robots according to claim 2 is characterized by: It also comprises a support plate (101) and a magnetic attraction plate (102); the support plate (101) is fixedly connected to the upper part of the mounting frame (3); and the magnetic attraction plate (102) is fixedly connected to the support plate (101).

Images