Drop device for dust content test experiment of automotive upholstery forming cotton cushion

Abstract

The utility model relates to a falling device for a dust content test experiment of an automotive upholstery forming cotton pad, which comprises a bottom plate and a standard weight, a door-shaped frame and an electric cabinet are mounted on the bottom plate, an electric cylinder support is mounted at the top end of the door-shaped frame, an electric telescopic cylinder is mounted on the electric cylinder support, and a guide support is mounted at the bottom end of the electric telescopic cylinder. An electromagnet is installed in the center of the bottom end of the guide support and attracts the standard weight when powered on. A proximity switch is installed on one side of the door-shaped frame, and a trigger block is installed on the side, close to the proximity switch, of the guide support. A controller, a motor driver, a relay and a counter are installed in the electric cabinet, and a button switch is installed on the electric cabinet. The device has the beneficial effects that the standard weight is mechanically sucked and lifted for a drop test, and the labor intensity of testers is reduced; the proximity switch is matched with the trigger block, so that the falling height of the standard heavy block every time is consistent; the counter is used for counting, so that the labor intensity of testers is reduced, and the counting accuracy is improved.

Description

Technical Field

[0001] The utility model relates to the field of testing equipment, in particular to a dropping device used for testing experiments on the dust content of a molded cotton pad of an automobile interior decoration part. Background Art

[0002] At present, when testing the dust content of molded cotton pads for automotive interior parts, it is necessary to manually pick up a 1.3kg standard weight (140mm long * 90mm wide) and let it fall freely from a height of 50mm 200 times, and then calculate the number of free falls orally. There are the following problems: the height of the weight is not accurate when picking it up manually, and the manual calculation of the number of times is prone to errors, resulting in unreliable test results. Utility Model Content

[0003] The utility model aims to overcome the above problems existing in the prior art and to provide a drop device for testing the dust content of a molded cotton pad of an automobile interior decoration part.

[0004] In order to achieve the above technical objectives and the above technical effects, the present invention is implemented through the following technical solutions:

[0005] A drop device for testing dust content of molded cotton pads for automobile interior decoration parts comprises a bottom plate and a standard weight block that can be attracted by a magnet, a door frame and an electric control box are installed on the bottom plate, a height-adjustable electric cylinder bracket is installed on the top of the door frame, a vertically downward electric telescopic cylinder is installed on the electric cylinder bracket, a guide bracket is installed at the bottom end of the electric telescopic cylinder, an electromagnet is installed at the bottom center of the guide bracket, and when the electromagnet is energized, it attracts the standard weight block so that the standard weight block is located directly above the molded cotton pad for automobile interior decoration parts; a height-adjustable proximity switch is installed on one side of the door frame, and the guide bracket A trigger block for triggering the proximity switch is installed on the side close to the proximity switch; a controller, a motor driver, a relay, and a counter are installed in the electric control box, a button switch is installed on the electric control box, the signal input terminal of the controller is electrically connected to the signal output terminal of the proximity switch and the button switch respectively, the signal output terminal of the controller is electrically connected to the signal input terminal of the motor driver, the input circuit of the relay, and the signal collection terminal of the counter respectively, the signal output terminal of the motor driver is electrically connected to the electric telescopic cylinder, and the output circuit of the relay is electrically connected to the electromagnet.

[0006] Wherein, a vibration-damping pad is installed on the bottom plate below the portal frame.

[0007] Among them, a limiting frame for limiting the position of the molded cotton pad of the automobile interior decoration is installed on the vibration damping pad. The limiting frame includes a rectangular installation frame and four limiting columns with L-shaped cross-sections. The four limiting columns are vertically fixed to the top of the four corners of the installation frame.

[0008] Among them, the door-type frame includes a first vertical plate, a second vertical plate, and a first horizontal plate. The first vertical plate and the second vertical plate are parallel to each other. The bottom end of the first vertical plate and the bottom end of the second vertical plate are respectively installed on the bottom plate, and the top end of the first vertical plate and the top end of the second vertical plate are respectively connected to the bottom ends of both ends of the first horizontal plate.

[0009] Wherein, a vertical strip hole is arranged on the first vertical plate, and the proximity switch is installed in the strip hole.

[0010] Among them, the electric cylinder bracket includes a second horizontal plate, two mutually parallel first guide rods, and two mutually parallel adjustable foot cups. Two mutually parallel first guide sleeves are installed on the second horizontal plate. The first guide rod is vertically installed on the top of the first horizontal plate, and the top of the first guide rod is inserted into the first guide sleeve from bottom to top; the bottom end of the adjustable foot cup is placed on the top of the first horizontal plate, and the second horizontal plate is clamped between two upper and lower parallel adjustment nuts of the adjustable foot cup; the electric telescopic cylinder is installed at the center of the second horizontal plate, and the center of the first horizontal plate is provided with a first circular hole through which the bottom of the electric telescopic cylinder passes from top to bottom.

[0011] Among them, the guide bracket includes a third horizontal plate and two second parallel guide rods, the top center of the third horizontal plate is connected to the top center of the electric telescopic cylinder, the second guide rod is vertically installed on the top of the third horizontal plate, the first horizontal plate is also provided with two second parallel circular holes, the second horizontal plate is also installed with two second parallel guide sleeves, the top of the second guide rod passes through the second circular hole from bottom to top and is inserted into the second guide sleeve; the trigger block is installed at one end of the third horizontal plate close to the first vertical plate.

[0012] The beneficial effects of the utility model are: it is conducive to the cooperation of the door frame, the electric cylinder bracket, the guide bracket, and the electromagnet to realize the mechanized absorption and lifting of the standard weight block for the drop test, thereby reducing the labor intensity of the tester; the proximity switch and the trigger block are used to control the height of the electromagnet to release the standard weight block each time, so that the height of the standard weight block is consistent each time it falls; the counter is used for counting, which not only reduces the labor intensity of the tester but also improves the accuracy of the counting, which is conducive to improving the accuracy of the test result. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of the present application. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the drawings:

[0014] Figure 1 It is a structural schematic diagram of the drop device in the utility model;

[0015] Figure 2It is a structural schematic diagram of the middle door frame of the utility model;

[0016] Figure 3 It is a structural schematic diagram of the electric cylinder bracket in the utility model;

[0017] Figure 4 It is a schematic diagram of the structure of the guide bracket, the trigger block and the electromagnet in the utility model;

[0018] Figure 5 It is a schematic diagram of the structure in which the molded cotton pad of the automobile interior decoration part in the utility model is placed in the limiting frame;

[0019] Explanation of the numbers in the figure: standard weight block 100, automotive interior trim molding cotton pad 200, bottom plate 1, door frame 2, first vertical plate 21, strip hole 211, second vertical plate 22, first horizontal plate 23, first circular hole 231, second circular hole 232, electric cylinder bracket 3, second horizontal plate 31, first guide rod 32, adjustable foot cup 33, adjusting nut 331, first guide sleeve 34, second guide sleeve 35, electric telescopic cylinder 4, guide bracket 5, third horizontal plate 51, second guide rod 52, electromagnet 6, proximity switch 7, trigger block 71, vibration damping pad 8, limit frame 9, mounting frame 91, limit column 92, electric control box 10, counter 101, push button switch 102. DETAILED DESCRIPTION

[0020] The present invention will be described in detail below with reference to the accompanying drawings and in combination with embodiments.

[0021] like Figures 1 to 5 As shown, the falling device for testing the dust content of molded cotton pads for automobile interior decoration parts includes a base plate 1 and a standard weight block 100 that can be attracted by a magnet. The standard weight block is an iron block with a length of 140 mm, a width of 90 mm and a weight of 1.3 kg. A door frame 2 and an electric control box 10 are installed on the base plate 1.

[0022] A height-adjustable electric cylinder bracket 3 is installed at the top of the door frame 2, a vertically downward electric telescopic cylinder 4 is installed on the electric cylinder bracket 3, a guide bracket 5 is installed at the bottom end of the electric telescopic cylinder 4, and an electromagnet 6 is installed at the bottom center of the guide bracket 5. When the electromagnet 6 is energized, it absorbs the standard weight block 100 so that the standard weight block is located directly above the molded cotton pad of the automobile interior decoration.

[0023] The door frame 2 includes a first vertical plate 21, a second vertical plate 22, and a first horizontal plate 23. The first vertical plate 21 and the second vertical plate 22 are parallel to each other. The bottom ends of the first vertical plate 21 and the second vertical plate 22 are respectively installed on the bottom plate 1, and the top ends of the first vertical plate 21 and the second vertical plate 22 are respectively connected to the bottom ends of both ends of the first horizontal plate 23.

[0024] The electric cylinder support 3 includes a second transverse plate 31, two mutually parallel first guide rods 32, and two mutually parallel adjustable foot cups 33. Two mutually parallel first guide sleeves 34 are installed on the second transverse plate 31. The first guide rod 32 is vertically installed at the top of the first transverse plate 23. The top of the first guide rod 32 is inserted into the first guide sleeve 34 from bottom to top, which is convenient for the axial adjustment of the electric cylinder support 3 along the first guide rod 32 and ensures that the first guide rod 32 does not move radially between the electric cylinder support 3 and the door frame 2; the bottom end of the adjustable foot cup 33 is placed on the top of the first transverse plate 23, and the second transverse plate 31 is clamped between two upper and lower parallel adjusting nuts 331 of the adjustable foot cup 33. The height of the second transverse plate 31 is adjusted by rotating the adjusting nuts 331 on the adjustable foot cup 33; the electric telescopic cylinder 4 is installed at the center of the second transverse plate 31, and the center of the first transverse plate 23 is provided with a first circular hole 231 through which the bottom of the electric telescopic cylinder 4 passes from top to bottom.

[0025] The guide bracket 5 includes a third transverse plate 51 and two second parallel guide rods 52. The top center of the third transverse plate 51 is connected to the top center of the electric telescopic cylinder 4. The second guide rod 52 is vertically installed at the top of the third transverse plate 51. Two second parallel circular holes 232 are also provided on the first transverse plate 23. Two second parallel guide sleeves 35 are also installed on the second transverse plate 31. The top of the second guide rod 52 passes through the second circular hole 232 from bottom to top and then is inserted into the second guide sleeve 35. The guide bracket 5 is conducive to the electromagnet not swinging or rotating in the horizontal direction during the lifting movement, and improves the stability of the electromagnet when sucking the standard weight.

[0026] A height-adjustable proximity switch 7 is installed on one side of the door frame 2, and a trigger block 71 for triggering the proximity switch 7 is installed on the side of the guide bracket 5 close to the proximity switch. A vertical strip hole 211 is provided on the first vertical plate 21, and the proximity switch 7 is installed in the strip hole 211; the trigger block 71 is installed on one end of the third horizontal plate 51 close to the first vertical plate 21.

[0027] A vibration-damping pad 8 is installed on the bottom plate 1 below the portal frame 2. The vibration-damping pad 8 is used to reduce the transmission of vibration waves generated by the collision when the standard weight block 100 falls to the portal frame 2 and the electric control box 10; a limiting frame 9 for limiting the position of the automobile interior molding cotton pad 200 is installed on the vibration-damping pad 8. The limiting frame 9 includes a rectangular mounting frame 91 and four limiting columns 92 with an L-shaped cross-section. The four limiting columns 92 are respectively vertically fixed to the top of the four corners of the mounting frame 91.

[0028] The electric control box 10 is equipped with a controller, a motor driver, a relay, and a counter 101. A button switch 102 is installed on the electric control box 10. The signal input terminal of the controller is electrically connected to the signal output terminal of the proximity switch 7 and the button switch 102 respectively. The signal output terminal of the controller is electrically connected to the signal input terminal of the motor driver, the input circuit of the relay, and the signal acquisition terminal of the counter 101 respectively. The signal output terminal of the motor driver is electrically connected to the electric telescopic cylinder, and the output circuit of the relay is electrically connected to the electromagnet 6. The controller in this embodiment adopts a microprocessor, and the button switch adopts a button switch with three buttons.

[0029] Working principle:

[0030] First, place the automotive interior molding cotton pad in the limit frame, and then place the standard weight block on the automotive interior molding cotton pad;

[0031] Press the upper start button of the push button switch to start the drop device working;

[0032] The controller controls the electric telescopic cylinder to extend, controls the relay to close, and energizes the electromagnet to generate magnetism. The standard weight is attracted by the electromagnet, and then controls the electric telescopic cylinder to retract until the trigger block reaches the same height as the proximity switch. The proximity switch is triggered by the trigger block to generate a switch signal to the controller. After receiving the switch signal, the controller controls the relay to disconnect to cut off the power to the electromagnet. At the same time, the controller sends a pulse signal to the counter to make the counter count.

[0033] When the counted number displayed on the counter is the same as the required number of drops, press the upper stop button of the button switch to stop the drop device from working.

[0034] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments, and the above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, and these changes and improvements fall within the scope of the utility model to be protected.

Claims

1. A drop device for testing the dust content of molded cotton pads for automotive interior decoration, characterized by: It comprises a bottom plate and a standard weight block that can be attracted by a magnet. A door frame and an electric control box are installed on the bottom plate. A height-adjustable electric cylinder bracket is installed on the top of the door frame. A vertically downward electric telescopic cylinder is installed on the electric cylinder bracket. A guide bracket is installed at the bottom end of the electric telescopic cylinder. An electromagnet is installed at the bottom center of the guide bracket. When the electromagnet is energized, it attracts the standard weight block so that the standard weight block is located directly above the molded cotton pad of the automobile interior decoration part; a height-adjustable proximity switch is installed on one side of the door frame, and a trigger block for triggering the proximity switch is installed on the side of the guide bracket close to the proximity switch; a controller, a motor driver, a relay, and a counter are installed in the electric control box. A push button switch is installed on the electric control box. The signal input terminal of the controller is electrically connected to the signal output terminal of the proximity switch and the push button switch respectively. The signal output terminal of the controller is electrically connected to the signal input terminal of the motor driver, the input circuit of the relay, and the signal acquisition terminal of the counter respectively. The signal output terminal of the motor driver is electrically connected to the electric telescopic cylinder, and the output circuit of the relay is electrically connected to the electromagnet.

2. The drop device for testing the dust content of the automotive interior trim molding cotton pad according to claim 1, characterized in that: A vibration-damping pad is installed on the bottom plate below the portal frame.

3. The drop device for testing the dust content of the automotive interior trim molding cotton pad according to claim 2, characterized in that: A limiting frame for limiting the position of the molded cotton pad of the automobile interior decoration is installed on the vibration-damping pad. The limiting frame includes a rectangular installation frame and four limiting columns with L-shaped cross-sections. The four limiting columns are respectively vertically fixed to the top ends of the four corners of the installation frame.

4. The drop device for testing the dust content of the automotive interior trim molding cotton pad according to claim 1, characterized in that: The door-type frame includes a first vertical plate, a second vertical plate, and a first horizontal plate. The first vertical plate and the second vertical plate are parallel to each other. The bottom end of the first vertical plate and the bottom end of the second vertical plate are respectively installed on the bottom plate, and the top end of the first vertical plate and the top end of the second vertical plate are respectively connected to the bottom ends of both ends of the first horizontal plate.

5. The drop device for testing the dust content of the automotive interior trim molding cotton pad according to claim 4, characterized in that: The first vertical plate is provided with a vertical strip hole, and the proximity switch is installed in the strip hole.

6. The drop device for testing the dust content of the automotive interior trim molding cotton pad according to claim 4, characterized in that: The electric cylinder bracket includes a second horizontal plate, two mutually parallel first guide rods, and two mutually parallel adjustable foot cups. Two mutually parallel first guide sleeves are installed on the second horizontal plate. The first guide rod is vertically installed on the top of the first horizontal plate, and the top of the first guide rod is inserted into the first guide sleeve from bottom to top; the bottom end of the adjustable foot cup is placed on the top of the first horizontal plate, and the second horizontal plate is clamped between two upper and lower parallel adjustment nuts of the adjustable foot cup; the electric telescopic cylinder is installed at the center of the second horizontal plate, and the center of the first horizontal plate is provided with a first circular hole through which the bottom of the electric telescopic cylinder passes from top to bottom.

7. The drop device for testing the dust content of the automotive interior trim molding cotton pad according to claim 6, characterized in that: The guide bracket includes a third horizontal plate and two second parallel guide rods. The top center of the third horizontal plate is connected to the top center of the electric telescopic cylinder. The second guide rod is vertically installed on the top of the third horizontal plate. The first horizontal plate also has two second parallel circular holes. The second horizontal plate also has two second parallel guide sleeves. The top of the second guide rod passes through the second circular hole from bottom to top and is inserted into the second guide sleeve. The trigger block is installed at one end of the third horizontal plate close to the first vertical plate.

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