A high-temperature hot pressing molding equipment for multi-stage alignment of automotive interior parts

Abstract

The present invention relates to the technical field of hot pressing forming equipment, and specifically to a high-temperature hot pressing forming equipment for multi-stage alignment of automobile interior decoration parts, comprising: a shell; a hydraulic cylinder, the hydraulic cylinder is fixedly connected to the top end of the shell; a pressing device, the bottom end of the pressing device is fixedly connected to the inner wall of the shell; a heating device, the heating device is arranged inside the shell. The present invention can realize multi-stage alignment pressing of automobile interior decoration parts by arranging the pressing device, the mutual cooperation of the movable plate, the mounting plate and the bottom plate, and the template can be replaced and adjusted in the mounting groove according to the shape and requirements of the interior decoration parts, so as to realize multi-stage alignment pressing of automobile interior decoration parts, and can press interior decoration parts of different shapes at the same time, thereby accelerating the working speed and improving the working efficiency. A fixing mechanism is arranged in the fixing device, and the pushing block is driven to move by rotating the pushing screw, so that the pressing block is rotated by the turning handle to press the interior decoration part downward, so as to quickly fix the composite plate and improve the production efficiency.

Description

Technical Field

[0001] The invention relates to the technical field of hot pressing forming equipment, and in particular to a high-temperature hot pressing forming equipment for multi-stage alignment of automobile interior decoration parts. Background Art

[0002] In the field of automobile interior manufacturing, with the continuous development of the automobile industry, consumers' requirements for the quality, diversity and production efficiency of automobile interiors are increasing.

[0003] Traditional hot press forming equipment for automotive interior parts has many limitations. In terms of pressing, previous equipment often has difficulty in achieving multi-stage alignment pressing, and cannot simultaneously and efficiently press interior parts of different shapes, resulting in slow working speed and low work efficiency, and cannot meet the diverse production needs of automotive interior parts. In terms of fixing devices, traditional equipment has a relatively single way of fixing composite panels, and it is difficult to quickly fix composite panels of different thicknesses, and the versatility is poor, which limits the specification range of interior parts that can be processed by the equipment, affecting production efficiency and product quality. For the heating device, traditional equipment cannot accurately adjust the position of the heating wire according to the thickness of different composite panels, and cannot change the temperature distribution inside the equipment. It is difficult to meet the temperature requirements of hot press forming of different automotive interior parts, resulting in inconsistent product quality and a high defective rate.

[0004] To sum up, in order to overcome the shortcomings of traditional hot pressing forming equipment for automobile interior parts, improve the production quality, efficiency and versatility of automobile interior parts, and meet market demand, a multi-stage high-temperature hot pressing forming equipment for automobile interior parts of the present invention came into being. Summary of the invention

[0005] In view of the deficiencies in the prior art, the present invention adopts the following technical solution to solve the technical problems: a high-temperature hot pressing forming device for multi-stage alignment of automobile interior decoration parts, comprising: a shell; a hydraulic cylinder, the hydraulic cylinder is fixedly connected to the top end of the shell; a pressing device, the bottom end of the pressing device is fixedly connected to the inner wall of the shell; a heating device, the heating device is arranged inside the shell, and the bottom end of the heating device is fixedly connected to the bottom inner wall of the shell; a fixing device, the bottom end of the fixing device is fixedly connected to the bottom inner wall of the shell; the pressing device comprises a bottom plate, the four corners of the bottom plate are fixedly connected to limit rods, the top end of the outer wall of the limit rod is slidably connected to a movable plate, the middle part of the outer wall of the limit rod is slidably connected to a mounting plate, the walls of the bottom plate, the movable plate and the mounting plate are all provided with mounting grooves, and the inner wall of the mounting groove is slidably connected to a template.

[0006] The present invention is further configured such that the bottom end of the bottom plate is fixedly connected to the bottom inner wall of the housing, the top end of the limit rod is fixedly connected to the top inner wall of the housing, and the output end of the hydraulic cylinder is fixedly connected to the outer wall of the movable plate. When the hydraulic cylinder is working, its output end pushes the movable plate to move downward along the limit rod, and the movable plate, the mounting plate and the bottom plate cooperate with each other, and the automotive interior parts placed therebetween are pressed together through the template.

[0007] The present invention is further configured such that the outer walls of the bottom plate, the movable plate and the mounting plate are all fixedly connected with a reset spring, the outer wall of the limit rod is provided with a limit groove, the inner wall of the mounting plate is fixedly connected with a clamping block, and the outer wall of the clamping block is slidably connected with the inner wall of the limit groove. After the pressing is completed, the reset spring can help each component to reset, and during the sliding process of the mounting plate, the clamping block slides on the limit groove and is restricted, so that the mounting plate moves and resets.

[0008] The present invention is further configured such that the temperature raising device comprises a sliding rod, the outer wall of the sliding rod is slidably connected to a fixed frame, a through hole is provided in the wall of the fixed frame, an electric heating wire is fixedly connected to the inner wall of the fixed frame, an adjusting screw is threadedly connected to the inner wall of the fixed frame, and a rotating rod is fixedly connected to the top of the adjusting screw. The rotating rod on the housing is rotated to drive the fixedly connected adjusting screw to rotate, and the rotation of the rotating rod drives the two fixed frames threadedly connected to it to slide on the sliding rod, and move closer to or away from each other, so as to adjust according to the thickness of the composite plate.

[0009] The present invention is further configured such that the bottom end of the slide bar is fixedly connected to the inner wall of the shell, the outer wall of the rotating rod is rotatably connected to the inner wall of the shell, the end of the rotating rod away from the adjusting screw rod penetrates the shell and extends to the outside of the shell, and the outer wall of the rotating rod is slidably connected to the inner wall of the through hole. The rotating rods of the other two groups pass through the fixing frame at the top to drive the screw rod to rotate, so that the fixing frames of the other two groups slide on the slide bar, thereby adjusting according to the thickness of the composite plate on different fixing mechanisms.

[0010] The present invention is further configured such that the fixing device includes a fixing rod, the outer wall of the fixing rod is fixedly connected with a block, the outer wall of the fixing rod is slidably connected with a slide rail, the bottom end of the slide rail is fixedly connected with a push spring, the end of the slide rail away from the fixing rod is fixedly connected with a sliding block, and the inner wall of the slide rail is slidably connected with a fixing mechanism. The bottom end of the fixing rod is fixedly connected to the inner wall of the shell, the end of the push spring away from the slide rail is fixedly connected to the outer wall of the block, the outer wall of the slide rail is slidably connected to the outer wall of the block, and the outer wall of the sliding block is slidably connected to the inner wall of the shell. The friction blocks on the bearing block and the pressing block can increase the friction with the interior decoration, making the fixing more stable, facilitating the rapid fixing of composite panels of different thicknesses, and after the fixing is completed, the fixing mechanism drives the composite panel to move on the slide rail.

[0011] The present invention is further configured such that the fixing mechanism includes a bearing block, a pressing block is provided at the top of the bearing block, a turning handle is rotatably connected at both ends of the bearing block, a friction block is fixedly connected to the outer walls of the bearing block and the pressing block, a pushing screw is threadedly connected to the outer wall of the bearing block, and a pushing block is rotatably connected to the outer wall of the pushing screw. The outer wall of the bearing block is slidably connected to the inner wall of the slide rail, and the end of the turning handle away from the bearing block is rotatably connected to the outer wall of the pressing block, and a latch is slidably connected to the inner wall of the pressing block. The pushing screw is rotated to drive the rotatably connected pushing block to move until it contacts the pressing block, and as the pushing block is pushed, the pressing block is rotated on the pressing block through the turning handle, so that the pressing block presses the interior decoration downward through the rotation of the turning handle.

[0012] The beneficial effects of the present invention are as follows: 1. The present invention provides a pressing device, and the movable plate, the mounting plate and the bottom plate cooperate with each other, and the template can be replaced and adjusted in the mounting groove according to the shape and requirements of the interior decoration parts, so as to realize multi-stage alignment pressing of automobile interior decoration parts, and can press interior decoration parts of different shapes at the same time, thereby accelerating the working speed and improving the working efficiency.

[0013] 2. The present invention sets a fixing mechanism in the fixing device, drives the push block to move by rotating the push screw, and makes the pressing block press the interior decoration part downward by rotating the handle, so that the composite plate can be fixed quickly and the production efficiency is improved. The bearing block and the pressing block can adapt to composite plates of different thicknesses, and the friction block increases the friction with the interior decoration part, making its fixation more stable. This enables the equipment to process automotive interior decoration parts of various specifications, thereby increasing the versatility of the equipment.

[0014] 3. The present invention provides a heating device, and the fixed frame can slide on the sliding rod through the rotating rod and the adjusting screw. The position of the heating wire is adjusted according to the thickness of different composite plates, and the temperature distribution inside the equipment is changed to meet the temperature requirements of hot pressing molding of different automotive interior parts. It ensures that each interior part can obtain uniform temperature conditions during the hot pressing molding process, thereby improving the consistency of product quality and reducing the defective rate.

[0015] 4. The present invention provides that during the pressing process, the slide rail slides on the fixed rod and the slide block slides on the inner wall of the housing, thus playing a role of stable support. After the pressing is completed, the reset spring helps the various components of the pressing device to reset, and the push spring causes the slide rail to drive the fixing mechanism to reset, which is convenient for the next operation and ensures the continuous and stable operation of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a front view of the present invention; Figure 2 is a cross-sectional view of the present invention; Figure 3 It is a structural schematic diagram of the pressing device of the present invention; Figure 4 It is a structural schematic diagram of the limit rod of the present invention; Figure 5 It is a structural schematic diagram of the mounting plate of the present invention; Figure 6 It is a structural schematic diagram of the temperature raising device of the present invention; Figure 7 It is a schematic diagram of the structure of the fixing device of the present invention; Figure 8 It is a structural schematic diagram of the fixing mechanism of the present invention.

[0017] In the figure: 1. shell; 2. hydraulic cylinder; 3. pressing device; 31. limiting rod; 32. reset spring; 34. moving plate; 35. bottom plate; 36. mounting plate; 37. template; 38. limiting groove; 39. mounting groove; 310. clamping block; 4. fixing device; 41. fixing rod; 42. stopper; 43. pushing spring; 44. slide rail; 45. sliding block; 46. fixing mechanism; 461. bearing block; 462. pressing block; 463. turning handle; 464. latch; 465. friction block; 466. pushing screw; 467. pushing block; 5. heating device; 51. fixing frame; 52. sliding rod; 53. heating wire; 54. adjusting screw; 55. turning rod; 56. through hole. DETAILED DESCRIPTION

[0018] The present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments. The embodiments of the present invention are provided for the purpose of illustration and description, and are not intended to be exhaustive or to limit the present invention to the disclosed forms. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiments are selected and described in order to better illustrate the principles and practical applications of the present invention, and to enable those of ordinary skill in the art to understand the present invention and thereby design various embodiments with various modifications suitable for specific uses. Example

[0019] See also Figure 1 - Figure 8The present invention provides a technical solution: a high-temperature hot pressing forming device for multi-stage alignment of automobile interior decoration parts, comprising: a shell 1; a hydraulic cylinder 2, the hydraulic cylinder 2 is fixedly connected to the top of the shell 1; a pressing device 3, the bottom end of the pressing device 3 is fixedly connected to the inner wall of the shell 1; a heating device 5, the heating device 5 is arranged inside the shell 1, and the bottom end of the heating device 5 is fixedly connected to the bottom inner wall of the shell 1; a fixing device 4, the bottom end of the fixing device 4 is fixedly connected to the bottom inner wall of the shell 1; the pressing device 3 comprises a bottom plate 35, the four corners of the bottom plate 35 are fixedly connected with a limiting rod 31, the top end of the outer wall of the limiting rod 31 is slidably connected with a moving plate 34, the middle part of the outer wall of the limiting rod 31 is slidably connected with a mounting plate 36, the walls of the bottom plate 35, the moving plate 34 and the mounting plate 36 are all provided with mounting grooves 39, and the inner wall of the mounting groove 39 is slidably connected with a template 37.

[0020] The bottom end of the bottom plate 35 is fixedly connected to the inner wall of the bottom end of the housing 1, the top end of the limit rod 31 is fixedly connected to the inner wall of the top end of the housing 1, and the output end of the hydraulic cylinder 2 is fixedly connected to the outer wall of the movable plate 34. When the hydraulic cylinder 2 is working, its output end pushes the fixedly connected movable plate 34 to move downward along the outer wall of the limit rod 31, and the movable plate 34, the mounting plate 36 and the bottom plate 35 cooperate with each other, and the automobile interior decoration parts placed therebetween are pressed together through the template 37. The mounting groove 39 opened in the wall of the mounting plate 36 allows the template 37 to be replaced and adjusted according to the shape and requirements of the interior decoration parts.

[0021] The outer walls of the bottom plate 35, the movable plate 34 and the mounting plate 36 are all fixedly connected with a return spring 32, the outer wall of the limit rod 31 is provided with a limit groove 38, the inner wall of the mounting plate 36 is fixedly connected with a clamping block 310, and the outer wall of the clamping block 310 is slidably connected with the inner wall of the limit groove 38. After the pressing is completed, the fixedly connected return spring 32 can help each component to reset, and the mounting plate 36 slides on the inner wall of the limit groove 38 through the outer wall of the clamping block 310 during the sliding process, and is restricted, so that the mounting plate 36 moves and resets.

[0022] The heating device 5 includes a sliding rod 52, the outer wall of the sliding rod 52 is slidably connected to a fixed frame 51, a through hole 56 is opened in the wall of the fixed frame 51, the inner wall of the fixed frame 51 is fixedly connected to a heating wire 53, the inner wall of the fixed frame 51 is threadedly connected to an adjusting screw 54, and the top of the adjusting screw 54 is fixedly connected to a rotating rod 55.

[0023] The bottom end of the slide bar 52 is fixedly connected to the inner wall of the housing 1, the outer wall of the rotating rod 55 is rotatably connected to the inner wall of the housing 1, the end of the rotating rod 55 away from the adjusting screw 54 penetrates the housing 1 and extends to the outside of the housing 1, and the outer wall of the rotating rod 55 is slidably connected to the inner wall of the through hole 56. The rotating rod 55 rotatably connected to the housing 1 drives the adjusting screw 54 fixedly connected to rotate, and the rotation drives the two fixed frames 51 threadedly connected to it to slide on the outer wall of the slide bar 52, and move closer to or away from each other, so as to adjust according to the thickness of the composite plate on the fixing mechanism 46.

[0024] The fixing device 4 includes a fixing rod 41, the outer wall of the fixing rod 41 is fixedly connected to a stopper 42, the outer wall of the fixing rod 41 is slidably connected to a slide rail 44, the bottom end of the slide rail 44 is fixedly connected to a push spring 43, the end of the slide rail 44 away from the fixing rod 41 is fixedly connected to a sliding block 45, and the inner wall of the slide rail 44 is slidably connected to a fixing mechanism 46.

[0025] The bottom end of the fixing rod 41 is fixedly connected to the inner wall of the housing 1, the end of the pushing spring 43 away from the slide rail 44 is fixedly connected to the outer wall of the stopper 42, the outer wall of the slide rail 44 is slidably connected to the outer wall of the stopper 42, and the outer wall of the sliding block 45 is slidably connected to the inner wall of the housing 1. The friction block 465 fixedly connected to the bearing block 461 and the pressing block 462 can increase the friction with the interior decoration, making it more stable and convenient for fast fixing of composite panels of different thicknesses.

[0026] The fixing mechanism 46 includes a bearing block 461, a pressing block 462 is arranged at the top of the bearing block 461, a rotating handle 463 is rotatably connected to both ends of the bearing block 461, a friction block 465 is fixedly connected to the outer walls of the bearing block 461 and the pressing block 462, a pushing screw 466 is threadedly connected to the outer wall of the bearing block 461, and a pushing block 467 is rotatably connected to the outer wall of the pushing screw 466. The outer wall of the bearing block 461 is slidably connected to the inner wall of the slide rail 44, the end of the rotating handle 463 away from the bearing block 461 is rotatably connected to the outer wall of the pressing block 462, and the inner wall of the pressing block 462 is slidably connected to the latch 464. Rotate the push screw 466 to drive the rotatably connected push block 467 to move until it contacts the outer wall of the pressing block 462. As the push block 467 pushes, the pressing block 462 rotates on the pressing block 462 through the rotatably connected handle 463, so that the pressing block 462 presses the interior decoration downward through the rotation of the handle 463.

[0027] Working principle: When in use, the composite plate required for processing the automobile interior parts is placed in the fixing device 4, and the composite plate to be processed is placed between the bearing block 461 and the pressing block 462 in the fixing mechanism 46, and the latch 464 is installed in the corresponding position according to the length of the composite plate to block the movement of the composite plate. At this time, the push screw 466 is rotated to drive the push block 467 connected to the rotation to move until it contacts the pressing block 462. With the push of the push block 467, the pressing block 462 is rotated on the pressing block 462 through the turning handle 463, so that the pressing block 462 presses the interior parts downward through the rotation of the turning handle 463. The friction block 465 on the bearing block 461 and the pressing block 462 can increase the friction with the interior parts, making the fixing more stable and facilitating the rapid fixing of composite plates of different thicknesses. After the fixing is completed, the fixing mechanism 46 drives the composite plate to move on the slide rail 44, drives the composite plate into the heating device 5, and drives the composite plate into the two fixing frames 51 by the fixing mechanism 46; By rotating the rotating rod 55 on the shell 1 according to the thickness of the composite plate to be processed, the rotating rod 55 drives the fixedly connected adjusting screw 54 to rotate, and the rotating rod 55 drives the two fixed frames 51 threadedly connected thereto to slide on the sliding rod 52 to move closer to or away from each other, and by rotating the other two adjusting screws 54 and passing through the through holes 56, the other two groups of fixed frames 51 slide on the sliding rod 52, so as to adjust the position of the electric heating wire 53 according to the thickness of the composite plate on the different fixing mechanisms 46, and change the temperature distribution inside the equipment to meet the temperature requirements of hot pressing molding of different automotive interior parts. After the electric heating wire 53 is energized, it generates heat to heat up the inside of the equipment; After the heating is completed, the fixing mechanism 46 drives the heated composite plate to move again and enter the pressing device 3. When the hydraulic cylinder 2 is working, its output end pushes the movable plate 34 to move downward along the limit rod 31. The movable plate 34, the mounting plate 36 and the bottom plate 35 cooperate with each other, and the automobile interior decoration parts placed therebetween are pressed through the template 37. Through the installation grooves 39 opened on the bottom plate 35, the movable plate 34 and the mounting plate 36, the template 37 can be replaced and adjusted according to the shape and requirements of the interior decoration parts to achieve multi-stage alignment and pressing. At the same time, the outer walls of the bottom plate 35, the movable plate 34 and the mounting plate 36 are fixedly connected with a return spring 32. After the pressing is completed, the return spring 32 can help the various components to return to their original positions. During the sliding process, the mounting plate 36 slides on the limit groove 38 through the block 310 and is restricted, so that the mounting plate 36 moves and returns to its original position; and when the components of the pressing device 3 are pressed and moved downward, the fixing mechanism 46 and the composite plate are driven to move, so that the slide rail 44 slides on the fixing rod 41, and the sliding block 45 also slides on the inner wall of the shell 1 to play a role of stable support, thereby moving together with the pressing device 3, and after the pressing is completed, under the action of the pushing spring 43, the slide rail 44 drives the fixing mechanism 46 to move and return to its original position on the fixing rod 41, until the slide rail 44 is blocked by the block 42 and the return is completed. At this time, the composite plate that has been pressed can be removed and the pressing is completed.

[0028] Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field and related fields without creative work should fall within the scope of protection of the present invention. The structures, devices and operating methods not specifically described and explained in the present invention are implemented according to the conventional means in the field unless otherwise specified and limited.

Claims

1. A high-temperature hot pressing molding equipment for multi-stage alignment of automotive interior parts, characterized in that: include: Housing (1); A hydraulic cylinder (2), wherein the hydraulic cylinder (2) is fixedly connected to the top end of the housing (1); A pressing device (3), the bottom end of the pressing device (3) being fixedly connected to the inner wall of the housing (1); A heating device (5), the heating device (5) being arranged inside the shell (1), and the bottom end of the heating device (5) being fixedly connected to the inner wall of the bottom end of the shell (1); A fixing device (4), wherein the bottom end of the fixing device (4) is fixedly connected to the inner wall of the bottom end of the shell (1); The pressing device (3) comprises a bottom plate (35), the four corners of the bottom plate (35) are fixedly connected to limiting rods (31), the top end of the outer wall of the limiting rod (31) is slidably connected to a movable plate (34), the middle part of the outer wall of the limiting rod (31) is slidably connected to a mounting plate (36), the walls of the bottom plate (35), the movable plate (34) and the mounting plate (36) are all provided with mounting grooves (39), and the inner wall of the mounting groove (39) is slidably connected to a template (37).

2. The multi-stage high-temperature hot pressing molding equipment for automobile interior parts according to claim 1 is characterized in that: The bottom end of the bottom plate (35) is fixedly connected to the bottom inner wall of the shell (1), the top end of the limit rod (31) is fixedly connected to the top inner wall of the shell (1), and the output end of the hydraulic cylinder (2) is fixedly connected to the outer wall of the movable plate (34).

3. The multi-stage high-temperature hot pressing molding equipment for automobile interior decoration parts according to claim 2 is characterized in that: The outer walls of the bottom plate (35), the movable plate (34) and the mounting plate (36) are all fixedly connected with a return spring (32); the outer wall of the limiting rod (31) is provided with a limiting groove (38); the inner wall of the mounting plate (36) is fixedly connected with a clamping block (310); the outer wall of the clamping block (310) is slidably connected to the inner wall of the limiting groove (38).

4. The multi-stage high-temperature hot pressing molding equipment for automobile interior decoration parts according to claim 1 is characterized in that: The temperature increasing device (5) comprises a sliding rod (52), the outer wall of the sliding rod (52) is slidably connected to a fixed frame (51), a through hole (56) is provided in the wall of the fixed frame (51), the inner wall of the fixed frame (51) is fixedly connected to a heating wire (53), the inner wall of the fixed frame (51) is threadedly connected to an adjusting screw (54), and the top end of the adjusting screw (54) is fixedly connected to a rotating rod (55).

5. The multi-stage high-temperature hot pressing molding equipment for automobile interior decoration parts according to claim 4 is characterized in that: The bottom end of the sliding rod (52) is fixedly connected to the inner wall of the shell (1), the outer wall of the rotating rod (55) is rotatably connected to the inner wall of the shell (1), one end of the rotating rod (55) away from the adjusting screw (54) passes through the shell (1) and extends to the outside of the shell (1), and the outer wall of the rotating rod (55) is slidably connected to the inner wall of the through hole (56).

6. The multi-stage high-temperature hot pressing molding equipment for automobile interior decoration parts according to claim 1, characterized in that: The fixing device (4) comprises a fixing rod (41), an outer wall of the fixing rod (41) is fixedly connected to a stopper (42), an outer wall of the fixing rod (41) is slidably connected to a slide rail (44), a bottom end of the slide rail (44) is fixedly connected to a push spring (43), an end of the slide rail (44) away from the fixing rod (41) is fixedly connected to a sliding block (45), and an inner wall of the slide rail (44) is slidably connected to a fixing mechanism (46).

7. The multi-stage high-temperature hot pressing molding equipment for automobile interior decoration parts according to claim 6, characterized in that: The bottom end of the fixing rod (41) is fixedly connected to the inner wall of the housing (1), the end of the pushing spring (43) away from the slide rail (44) is fixedly connected to the outer wall of the stopper (42), the outer wall of the slide rail (44) is slidably connected to the outer wall of the stopper (42), and the outer wall of the sliding block (45) is slidably connected to the inner wall of the housing (1).

8. The multi-stage high-temperature hot pressing molding equipment for automobile interior decoration parts according to claim 6, characterized in that: The fixing mechanism (46) comprises a bearing block (461), a pressing block (462) is arranged at the top of the bearing block (461), two ends of the bearing block (461) are rotatably connected to a rotating handle (463), the outer walls of the bearing block (461) and the pressing block (462) are fixedly connected to a friction block (465), the outer wall of the bearing block (461) is threadedly connected to a pushing screw (466), and the outer wall of the pushing screw (466) is rotatably connected to a pushing block (467).

9. The multi-stage high-temperature hot pressing molding equipment for automobile interior decoration parts according to claim 8, characterized in that: The outer wall of the bearing block (461) is slidably connected to the inner wall of the slide rail (44), one end of the rotating handle (463) away from the bearing block (461) is rotatably connected to the outer wall of the pressing block (462), and the inner wall of the pressing block (462) is slidably connected to a latch (464).

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