Strength testing device for curved surface touch display screen production

Abstract

The invention relates to the technical field of curved surface touch display screen testing, in particular to a strength testing device for curved surface touch display screen production. The invention provides an intensity test device for curved surface touch display screen production, which comprises a drop test machine, symmetrically distributed electric slide rails are installed in the drop test machine, a slide piece is slidably connected between the symmetrically distributed electric slide rails, and a slide switch is slidably connected to one side, close to the electric slide rails, in the drop test machine. A buffer spring is connected between the slide switch and the drop test machine. The angle of the test piece can be adjusted through cooperation of the first screw sleeve, the moving piece and the second screw sleeve, so that the comprehensiveness and accuracy of the test result are ensured, the ground made of different materials is selected by rotating the rotating shaft to adapt to various test environments, the flexibility is further improved, the rope winding wheel and the pull rope work cooperatively, and the test efficiency is improved. Convenience is provided for repeated testing, and the testing efficiency is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of curved touch display screen testing, and in particular to a strength testing device for curved touch display screen production. Background Art

[0002] The curved touch display is a display that combines curved design and touch technology. It fits the palm of the hand better and is easier to operate. Although the curved screen is portable, its drop resistance is relatively poor. Therefore, during the production process, strict drop resistance strength tests must be carried out to ensure product quality and user satisfaction.

[0003] For example, the patent authorization publication number is CN209802623U, and the announcement date is 2019-12-17. It discloses an anti-drop test device for an LED display screen, including a main body, a test box is fixedly connected to the middle end of the top of the main body, a motor box is fixedly connected to the middle end of the top of the test box, a motor is fixedly installed in the inner cavity of the motor box, the output shaft of the motor is fixedly connected to a driving gear, the left and right sides of the driving gear are meshed with driven gears, the inner surface of the driven gear is sleeved with a threaded rod, and the outer surface of the threaded rod is threadedly connected with a movable sleeve. However, the above scheme still has certain shortcomings in actual use. For example, during use, the first suction cup and the second suction cup are perpendicular to the ground, so they can only adsorb the back of the test piece, which limits the test angle. In the actual curved touch display test, the impacted ground may be composed of different materials. These simulation boards can be wood, stone, metal, etc., and the simulation of a single material cannot fully reflect the actual situation, thereby limiting the flexibility of the test. After each test, the test piece needs to be picked up again and fixed with a suction cup, which increases the complexity of the operation and reduces the detection efficiency.

[0004] Based on the above situation, the present invention proposes a strength testing device for curved touch display screen production. Summary of the invention

[0005] In order to overcome the disadvantages that the above device limits the test angle, and in the actual curved touch display test, the impacted ground may be composed of different materials, and the simulation of a single material cannot fully reflect the actual situation, thereby limiting the flexibility of the test, and the test piece needs to be picked up again after each test and fixed with a suction cup, which increases the complexity of operation and reduces the detection efficiency. The present invention proposes a strength testing device for curved touch display production.

[0006] The technical solution of the present invention is: a strength testing device for curved touch display screen production, comprising a drop test machine, symmetrically distributed electric slide rails are installed in the drop test machine, sliding parts are slidably connected between the symmetrically distributed electric slide rails, a sliding switch is slidably connected on one side of the drop test machine close to the electric slide rail, a buffer spring is connected between the sliding switch and the drop test machine, the buffer spring is wound around the sliding switch, the sliding switch is located directly below the sliding part, an air pump is fixedly connected to the sliding part, a fixed air box is fixedly connected to the side of the sliding part away from the air pump, and the air pump is connected to the top of the fixed air box. An air duct is connected between the parts, and the air duct passes through the sliding part. A suction cup is rotatably connected to the side of the fixed air box away from the sliding part, and another suction cup is fixedly connected to the bottom wall of the fixed air box. A first motor is installed on the sliding part, and the output shaft of the first motor is fixedly connected to a rope winding wheel through a coupling. A pull rope is wound on the rope winding wheel, and a movable end of the pull rope is fixedly connected to a mounting plate. A first screw sleeve is fixedly connected to the side of the rope winding wheel close to the first motor, and a second screw sleeve is fixedly connected to the suction cup close to the side of the first screw sleeve, and a moving part is threadedly connected between the first screw sleeve and the second screw sleeve.

[0007] As a preferred technical solution of the present invention, the air pump is electrically connected to the slide switch.

[0008] As a preferred technical solution of the present invention, it also includes a replacement mechanism for replacing the impacted ground of different materials in order to simulate different scenes. The replacement mechanism is arranged on the drop tester, and the replacement mechanism includes a rotating shaft. The rotating shaft is rotatably connected to the side of the drop tester away from the sliding member, and a rotating member is fixedly connected to the rotating shaft. A simulation board evenly distributed along the circumferential direction is slidably connected to the rotating member. A first guide rod evenly distributed along the circumferential direction is fixedly connected to the rotating member, and pins are slidably connected to the evenly distributed first guide rods. The evenly distributed pins are slidably connected to the rotating member, and the pins are also slidably connected to the adjacent simulation board. The evenly distributed pins are fixedly connected to first magnets, and a second magnet evenly distributed along the circumferential direction is fixedly connected to the side of the rotating member close to the pin.

[0009] As a preferred technical solution of the present invention, a knob is also included. A knob for saving effort is fixedly connected to one side of the rotating shaft close to the first guide rod.

[0010] As a preferred technical solution of the present invention, the first magnet and the adjacent second magnet are magnetically matched.

[0011] As a preferred technical solution of the present invention, a side of the rotating member close to the first guide rod is provided with evenly distributed rectangular sliding grooves along the circumferential direction, and compression springs are fixedly connected in the evenly distributed rectangular sliding grooves.

[0012] As a preferred technical solution of the present invention, it also includes a positioning mechanism for aligning the pulled-up test piece, the positioning mechanism is arranged on the sliding member, the positioning mechanism includes a first fixed frame, the first fixed frame is fixedly connected to the sliding member, a second motor is installed on the top of the first fixed frame, the output shaft of the second motor is connected to a bidirectional screw through a coupling, the bidirectional screw is threadedly connected with a symmetrically distributed first positioning piece, the rope wheel is fixedly connected with a second positioning piece, the sliding member is fixedly connected with a second fixed frame, and the bidirectional screw is rotatably connected to the second fixed frame.

[0013] As a preferred technical solution of the present invention, it also includes a rotating mechanism for automatically switching the simulation board. The rotating mechanism is arranged on the drop testing machine. The rotating mechanism includes a lifting member. The lifting member is fixedly connected to the sliding member. A second guide rod is fixedly connected to the side of the drop testing machine close to the electric slide rail. A connecting member is slidably connected to the second guide rod. A pressure spring is connected between the connecting member and the second guide rod. The pressure spring is wound around the second guide rod. A rack is fixedly connected to the side of the connecting member close to the knob, and a one-way gear is fixedly connected to the side of the rotating shaft close to the rack.

[0014] As a preferred technical solution of the present invention, the rack is meshed with the one-way gear.

[0015] As a preferred technical solution of the present invention, the lifting member and the connecting member are extrusion-fitted.

[0016] The present invention has the following advantages: first, the present invention can adjust the angle of the test piece through the cooperation of the first screw sleeve, the moving part, and the second screw sleeve, thereby ensuring the comprehensiveness and accuracy of the test results; secondly, by rotating the rotating shaft to select the ground of different materials, the test device can adapt to a variety of test environments, further improving its flexibility; and then, through the coordinated work of the rope wheel, the pull rope, and the installation plate, great convenience is provided for repeated testing, thereby improving the test efficiency.

[0017] The present invention realizes the function of straightening the test piece before it is sucked by the suction cup through the cooperation of the first positioning piece and the second positioning piece, as well as the coordination of the pull rope, the suction cup, the second motor, the bidirectional screw and other components, thereby ensuring that the initial state of the test piece in the drop test is consistent, thereby improving the accuracy and reliability of the test results.

[0018] The present invention realizes the automatic switching function of the simulation board through the cooperation of the lifting member, the connecting member, the rack and the one-way gear, reduces the time for manual replacement of the test ground, and improves the test efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention.

[0020] Figure 2 It is a partial three-dimensional structural schematic diagram of the present invention.

[0021] Figure 3 It is a sectional view of the three-dimensional structure of the first motor, suction cup, rope winding wheel and other components of the present invention.

[0022] Figure 4 It is a schematic diagram of the three-dimensional structure of the air pump, pull rope, mounting plate and other components of the present invention.

[0023] Figure 5 It is a sectional view of the three-dimensional structure of the compression spring, the first magnet, the second magnet and other components of the present invention.

[0024] Figure 6 It is a sectional view of the three-dimensional structure of the knob, shaft, rotating member and other components of the present invention.

[0025] Figure 7 It is an exploded view of the three-dimensional structure of the rotating part, simulation plate and compression spring component of the present invention.

[0026] Figure 8 It is a schematic diagram of the three-dimensional structure of components such as the second motor, the bidirectional screw and the first positioning member of the present invention.

[0027] Fig. 9 It is a schematic diagram of the three-dimensional structure of the lifting member, the rack, the second one-way gear and other components of the present invention.

[0028] The markings in the figure are: 1-drop test machine, 11-electric slide rail, 12-sliding part, 121-sliding switch, 122-buffer spring, 13-air pump, 14-air guide tube, 15-fixed air box, 16-suction cup, 17-first motor, 171-first screw sleeve, 18-winding wheel, 19-pull rope, 110-installation sheet, 111-moving part, 112-second screw sleeve, 2-knob, 21-rotating shaft, 2 2-rotating member, 23-simulation board, 24-first guide rod, 25-latch, 26-compression spring, 27-first magnet, 28-second magnet, 3-second motor, 31-first fixed frame, 32-bidirectional screw, 33-first positioning member, 34-second positioning member, 35-second fixed frame, 4-lifting member, 41-connecting member, 42-second guide rod, 43-pressure spring, 44-rack, 45-one-way gear. DETAILED DESCRIPTION

[0029] The present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments, but the protection scope and application scope of the present invention are not limited.

[0030] Embodiment 1: A strength testing device for curved touch display screen production, such as Figure 1 , Figure 2 , Figure 3 and Figure 4As shown, a drop tester 1 is included, and electric slide rails 11 symmetrically distributed on the inner rear wall of the drop tester 1 are installed, and a slide member 12 is slidably connected between the two electric slide rails 11, and a slide switch 121 is slidably connected to the rear of the drop tester 1, and a buffer spring 122 is connected between the slide switch 121 and the drop tester 1, and the buffer spring 122 is wound around the slide switch 121, and the slide switch 121 is located directly below the slide member 12, and an air pump 13 is fixedly connected to the rear side of the slide member 12, and the air pump 13 is electrically connected to the slide switch 121, and a fixed air box 15 is fixedly connected to the front side of the slide member 12, and an air guide is connected between the air pump 13 and the top of the fixed air box 15. Tube 14, the air guide tube 14 passes through the sliding member 12, the front wall of the fixed air box 15 is rotatably connected to a suction cup 16, the bottom wall of the fixed air box 15 is fixedly connected to another suction cup 16, the first motor 17 is installed on the sliding member 12, the output shaft on the front side of the first motor 17 is fixedly connected to a rope-winding wheel 18 through a coupling, a pull rope 19 is wound on the rope-winding wheel 18, the movable end of the pull rope 19 is fixedly connected to a mounting plate 110 for fixing the test piece, the rear side of the rope-winding wheel 18 is fixedly connected to a first screw sleeve 171, the front side suction cup 16 is fixedly connected to a second screw sleeve 112, and a moving member 111 is threadedly connected between the first screw sleeve 171 and the second screw sleeve 112.

[0031] like Figure 5 , Figure 6 and Figure 7 As shown, it also includes a replacement mechanism for replacing the impacted ground of different materials to simulate different scenes. The replacement mechanism is arranged on the drop tester 1. The replacement mechanism includes a rotating shaft 21. The lower part of the drop tester 1 is rotatably connected with the rotating shaft 21. The left side of the rotating shaft 21 is fixedly connected with a knob 2 for saving effort. The rotating shaft 21 is fixedly connected with a rotating member 22. The rotating member 22 is slidably connected with five simulation plates 23 evenly distributed along the circumferential direction. The simulation plates 23 can be made of wood, stone, metal, cement, etc. The left side of the rotating member 22 is fixedly connected with a knob 2 for saving effort. There are five first guide rods 24 distributed, and the five first guide rods 24 are all slidably connected with pins 25. The five pins 25 are slidably connected to the rotating member 22, and the pins 25 are also slidably connected to the adjacent simulation board 23. The five pins 25 are all fixedly connected with a first magnet 27. Five second magnets 28 evenly distributed along the circumferential direction are fixedly connected to the left side of the rotating member 22. The first magnet 27 and the adjacent second magnets 28 are magnetically matched. The left part of the rotating member 22 is provided with five evenly distributed rectangular sliding grooves along the circumferential direction, and compression springs 26 are fixedly connected in the five rectangular sliding grooves.

[0032] Initially, the compression spring 26 is in a deformed state. When the device is used, the test piece is first fixed on the mounting plate 110, and then the test piece is kept in a vertical state and close to the front suction cup 16, and the air pump 13 is controlled to evacuate air, and the front suction cup 16 will suck the test piece, and then the first motor 17 is controlled to drive the rope reel 18 to rotate in the opposite direction for more than two circles, and the reverse rotating rope reel 18 will release the pull rope 19 to make it loose, and the rope reel 18 will drive the first screw sleeve 171 to rotate, thereby driving the moving part 111 to move backward, and then driving the front suction cup 16 and the test piece together. Rotate, when the test piece rotates to the required angle for the test, control the first motor 17 to stop rotating, and then control the electric slide rail 11 to drive the sliding member 12 and the test piece sucked by the suction cup 16 to move downward rapidly. When the sliding member 12 moving downward contacts the sliding switch 121, the sliding member 12 will press the sliding switch 121 downward, and the sliding switch 121 will control the air pump 13 to inflate, and the buffer spring 122 will be deformed, and the suction cup 16 will immediately release the test piece. Under the action of gravity acceleration and its own gravity, the test piece will fall on the simulation board 23, and the first drop test is completed.

[0033] When it is necessary to repeat the test multiple times, first control the first motor 17 to drive the rope reel 18 to rotate forward to reel in the pull rope 19. The pull rope 19 will lift the test piece to be close to the suction cup 16, and then control the air pump 13 to evacuate air, so that the suction cup 16 will suck the test piece again, and control the electric slide rail 11 to drive the sliding part 12 to move up to the required height for the test, in preparation for the next drop test. Under the elastic action of the buffer spring 122, the sliding switch 121 moves up and resets. When it is necessary to simulate the ground of different materials, the staff can hold the knob 2 and rotate the shaft 21, thereby driving the rotating part 22 and the simulation board 23 to rotate. When the ground of the material required for the test rotates to the bottom of the sliding part 12, stop rotating the shaft 21 because the rotating part 22 is already equipped with simulation boards 23 of five different materials.

[0034] When the simulation board 23 of the sixth material needs to be replaced, first push the top pin 25 to the left, the top pin 25 will withdraw from the adjacent simulation board 23, and the top first magnet 27 will separate from the second magnet 28, and at the same time, under the action of the top compression spring 26, the top simulation board 23 will be popped up, and then taken out, and the simulation board 23 of the sixth material is inserted into the corresponding rectangular slide groove, and then the simulation board 23 of the sixth material is pressed downward to make it fit with the simulation boards 23 on the front and rear sides, and push the top pin 25 to the right, the pin 25 will be inserted into the simulation board 23 of the sixth material and limit it, and the top compression spring 26 will continue to deform, and so on, and continue to replace the simulation boards 23 of other materials.

[0035] When it is necessary to simulate the test piece falling directly downward, the suction cup 16 on the lower side can be used to absorb the test piece. In summary, the first screw sleeve 171, the movable part 111, and the second screw sleeve 112 cooperate to adjust the angle of the test piece, thereby ensuring the comprehensiveness and accuracy of the test results. Secondly, by rotating the rotating shaft 21 to select the ground of different materials, the test device can adapt to a variety of test environments, further improving its flexibility. The coordinated work of the rope wheel 18, the pull rope 19, and the mounting plate 110 provides great convenience for repeated testing, thereby improving the test efficiency.

[0036] Embodiment 2: Based on embodiment 1, Figure 8 As shown, it also includes a positioning mechanism for aligning the pulled-up test piece, the positioning mechanism is arranged on the sliding member 12, and the positioning mechanism includes a first fixed frame 31, the first fixed frame 31 is fixedly connected to the left front side of the sliding member 12, a second motor 3 is installed on the top of the first fixed frame 31, the output shaft on the right side of the second motor 3 is connected to a bidirectional screw 32 through a coupling, two symmetrically distributed first positioning members 33 are threadedly connected to the bidirectional screw 32, a second positioning member 34 is fixedly connected to the front side of the rope wheel 18, a second fixed frame 35 is fixedly connected to the sliding member 12, and the bidirectional screw 32 is rotatably connected to the second fixed frame 35.

[0037] After the pull rope 19 lifts the test piece to be close to the suction cup 16, and the front side of the test piece will contact the second positioning piece 34, the second motor 3 is first controlled to drive the bidirectional screw 32 to rotate forward, thereby driving the first positioning piece 33 to move inward to contact the test piece, and the inwardly moving first positioning piece 33 will straighten the test piece, and the test piece will remain vertical to the ground, and then the air pump 13 is controlled to let the suction cup 16 suck the test piece, and then the second motor 3 is controlled to drive the bidirectional screw 32 to rotate in the opposite direction, thereby driving the first positioning piece 33 to move outward to separate from the test piece. In summary, through the cooperation between the first positioning piece 33 and the second positioning piece 34, as well as the cooperation of the pull rope 19, the suction cup 16, the second motor 3, the bidirectional screw 32 and other components, the function of straightening the test piece before it is sucked by the suction cup 16 is realized, ensuring that the initial state of the test piece in the drop test is consistent, thereby improving the accuracy and reliability of the test results.

[0038] like Fig. 9As shown, it also includes a rotating mechanism for automatically switching the simulation board 23. The rotating mechanism is arranged on the drop tester 1, and the rotating mechanism includes a lifting member 4. The lifting member 4 is fixedly connected to the left side of the sliding member 12, and a second guide rod 42 is fixedly connected to the upper rear side of the drop tester 1. The connecting member 41 is slidably connected to the second guide rod 42. The pressure spring 43 is connected between the connecting member 41 and the second guide rod 42. The pressure spring 43 is wound around the second guide rod 42. The lifting member 4 is squeezed and fitted with the connecting member 41. A rack 44 is fixedly connected to the lower part of the connecting member 41. A one-way gear 45 is fixedly connected to the left side of the rotating shaft 21, and the rack 44 is meshed with the one-way gear 45.

[0039] When the device is used, the electric slide rail 11 is first controlled to drive the sliding member 12 to move upward first, thereby driving the lifting member 4 to move upward. When the lifting member 4 moving upward contacts the connecting member 41, the lifting member 4 will support the connecting member 41 and drive it to move upward together with the rack 44. The pressure spring 43 will be deformed, and the upward moving rack 44 will drive the rotating shaft 21 to rotate about 72 degrees through the one-way gear 45, thereby driving the rotating member 22 and the simulation board 23 to rotate, so as to realize the replacement of the simulation board 23. When the pressure spring 43 is deformed to the limit, the electric slide rail 11 is immediately controlled to drive the sliding member 12 to move downward quickly, and the lifting member 4 will be separated from the connecting member 41. Under the elastic action of the pressure spring 43, the connecting member 41 drives the rack 44 to move downward and reset. At this time, the rotating shaft 21 will remain stationary. In summary, through the cooperation of the lifting member 4, the connecting member 41, the rack 44, and the one-way gear 45, the automatic switching function of the simulation board 23 is realized, which reduces the time for manual replacement of the test ground and improves the test efficiency.

[0040] The above embodiments are only for illustrating the technical concept and features of the present invention, and their purpose is to enable people familiar with the technology to understand the content of the present invention and implement it accordingly, and they cannot be used to limit the protection scope of the present invention. Any equivalent changes or modifications made according to the spirit of the present invention should be included in the protection scope of the present invention.

Claims

1. A strength testing device for curved touch display screen production, characterized in that: The invention comprises a drop test machine (1), wherein symmetrically distributed electric slide rails (11) are installed in the drop test machine (1), a slide member (12) is slidably connected between the symmetrically distributed electric slide rails (11), a slide switch (121) is slidably connected to a side of the drop test machine (1) close to the electric slide rail (11), a buffer spring (122) is connected between the slide switch (121) and the drop test machine (1), the buffer spring (122) is wound around the slide switch (121), the slide switch (121) is located directly below the slide member (12), an air pump (13) is fixedly connected to the slide member (12), a fixed air box (15) is fixedly connected to a side of the slide member (12) away from the air pump (13), an air guide pipe (14) is connected between the air pump (13) and the top of the fixed air box (15), and the air guide pipe (14) extends from the slide member (13) to the top of the fixed air box (15). The fixed air box (15) passes through the moving member (12); a suction cup (16) is rotatably connected to a side of the fixed air box (15) away from the sliding member (12); another suction cup (16) is fixedly connected to the bottom wall of the fixed air box (15); a first motor (17) is installed on the sliding member (12); an output shaft of the first motor (17) is fixedly connected to a rope reel (18) through a coupling; a pull rope (19) is wound around the rope reel (18); a mounting plate (110) is fixedly connected to the movable end of the pull rope (19); a first screw sleeve (171) is fixedly connected to a side of the rope reel (18) close to the first motor (17); a second screw sleeve (112) is fixedly connected to the suction cup (16) close to the first screw sleeve (171); and a moving member (111) is threadedly connected between the first screw sleeve (171) and the second screw sleeve (112).

2. A strength testing device for curved touch display screen production as claimed in claim 1, characterized in that: The air pump (13) is electrically connected to the slide switch (121).

3. A strength testing device for curved touch display screen production as claimed in claim 2, characterized in that: The invention also includes a replacement mechanism for replacing the impacted ground of different materials so as to simulate different scenes. The replacement mechanism is arranged on the drop test machine (1). The replacement mechanism includes a rotating shaft (21). The rotating shaft (21) is rotatably connected to the side of the drop test machine (1) away from the sliding member (12). The rotating shaft (21) is fixedly connected to a rotating member (22). The rotating member (22) is slidably connected to a simulation plate (23) evenly distributed along the circumferential direction. The rotating member (22) is fixedly connected to a rotation member (22). The first guide rods (24) are uniformly distributed in the circumferential direction, and the uniformly distributed first guide rods (24) are all slidably connected with latches (25). The uniformly distributed latches (25) are all slidably connected with the rotating member (22), and the latches (25) are also slidably connected with the adjacent simulation board (23). The uniformly distributed latches (25) are all fixedly connected with first magnets (27), and a side of the rotating member (22) close to the latches (25) is fixedly connected with second magnets (28) uniformly distributed in the circumferential direction.

4. A strength testing device for curved touch display screen production as claimed in claim 3, characterized in that: It also includes a knob (2), and a knob (2) for saving effort is fixedly connected to one side of the rotating shaft (21) close to the first guide rod (24).

5. A strength testing device for curved touch display screen production as claimed in claim 4, characterized in that: The first magnet (27) and the adjacent second magnet (28) are magnetically matched.

6. A strength testing device for curved touch display screen production as claimed in claim 5, characterized in that: A side of the rotating member (22) close to the first guide rod (24) is provided with evenly distributed rectangular sliding grooves along the circumferential direction, and compression springs (26) are fixedly connected in the evenly distributed rectangular sliding grooves.

7. A strength testing device for curved touch display screen production as claimed in claim 6, characterized in that: The invention also comprises a positioning mechanism for aligning the pulled-up test piece, the positioning mechanism being arranged on the sliding member (12), the positioning mechanism comprising a first fixing frame (31), the first fixing frame (31) being fixedly connected to the sliding member (12), a second motor (3) being mounted on the top of the first fixing frame (31), an output shaft of the second motor (3) being connected to a bidirectional screw rod (32) via a coupling, a symmetrically distributed first positioning member (33) being threadedly connected to the bidirectional screw rod (32), a second positioning member (34) being fixedly connected to the rope reel (18), a second fixing frame (35) being fixedly connected to the sliding member (12), and the bidirectional screw rod (32) being rotatably connected to the second fixing frame (35).

8. A strength testing device for curved touch display screen production as claimed in claim 7, characterized in that: The invention also comprises a rotating mechanism for automatically switching the simulation board (23), the rotating mechanism being arranged on the drop test machine (1), the rotating mechanism comprising a lifting member (4), the lifting member (4) being fixedly connected to the sliding member (12), a second guide rod (42) being fixedly connected to the side of the drop test machine (1) close to the electric slide rail (11), a connecting member (41) being slidably connected to the second guide rod (42), a pressure spring (43) being connected between the connecting member (41) and the second guide rod (42), the pressure spring (43) being wound around the second guide rod (42), a rack (44) being fixedly connected to the side of the connecting member (41) close to the knob (2), and a one-way gear (45) being fixedly connected to the side of the rotating shaft (21) close to the rack (44).

9. A strength testing device for curved touch display screen production as claimed in claim 8, characterized in that: The rack (44) is meshed with the one-way gear (45).

10. A strength testing device for curved touch display screen production as claimed in claim 9, characterized in that: The lifting member (4) and the connecting member (41) are pressed together.

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