Tension testing machine with adjustable tension

Abstract

The invention relates to the technical field of tension testing machines, in particular to a tension testing machine with adjustable tension. The invention provides a tension-adjustable tension testing machine with a reinforcing function, which comprises a base, a supporting seat is fixedly connected to the base, a motor is mounted on the base, an output shaft of the motor is connected with a first screw rod through a coupling, the first screw rod is located in the supporting seat, the first screw rod is rotatably connected with the top wall of the supporting seat, and a sliding block is in threaded connection with the first screw rod. The sliding block is slidably connected with the supporting seat, an adjusting frame is slidably connected to the sliding block, a spring is connected between the bottom of the adjusting frame and the sliding block, the spring is wound on the adjusting frame, a locking frame is fixedly connected to the base, a second screw rod is in threaded connection with the locking frame, a locking block is fixedly connected to the bottom wall of the adjusting frame, and a rotary knob is in threaded connection with the locking block. By means of the fastening assembly, when the adhesive tape is stretched, the situation that the adhesive tape falls off due to the fact that the rotary knob loosens under the action of tension is avoided, and therefore the stability of the adhesive tape is enhanced.

Description

Technical Field

[0001] The invention relates to the technical field of tensile testing machines, in particular to a tensile testing machine with adjustable tensile force. Background Art

[0002] Adhesive tape is widely used in modern society due to its ease of use, convenience, and affordability. In industrial production, adhesive tape is often used in packaging, fixing, encapsulation, isolation, and maintenance, playing an important bonding role. Its reliable bonding performance and convenient operation provide guarantees for enterprises to improve production efficiency and product quality, and tensile strength is of great significance for evaluating the performance and safety of adhesive tape.

[0003] At present, this test method mainly evaluates the tensile strength and load-bearing capacity of the tape. It is usually necessary to perform a tensile test on a tensile testing machine. During the tensile test, one end of the tape is fixed and a certain force is applied to the other end to test its reliability. Traditional tensile testing machines mostly use a bolt structure to clamp the two ends of the tape being tested. This method is convenient for replacing the tape, but at one end where a certain force is applied, as the tension gradually increases, the bolt may rotate, increasing the risk of the tape being unreliably fixed, which may cause the tape to fall off and cause the test to fail.

[0004] Based on the above situation, the present invention proposes a tensile testing machine with adjustable tensile force and reinforcement function. Summary of the invention

[0005] In order to overcome the disadvantage that as the tension gradually increases, the bolt may rotate, increasing the risk of the tape being unreliably fixed, causing the tape to fall off and causing test failure, the present invention provides a tensile testing machine with adjustable tension and a reinforcement function.

[0006] A tensile testing machine with adjustable tensile force includes a base, a support base is fixedly connected to the base, a motor is installed on the base, an output shaft of the motor is connected to a first screw through a coupling, the first screw is located in the support base, the first screw is connected to the top wall of the support base, a sliding block is threadedly connected to the first screw, the sliding block is slidably connected to the support base, an adjusting frame is slidably connected to the sliding block, a spring is connected between the bottom of the adjusting frame and the sliding block, the spring is wound on the adjusting frame, a locking frame is fixedly connected to the base, a second screw is threadedly connected to the locking frame, a locking block is fixedly connected to the bottom wall of the adjusting frame, a knob is threadedly connected to the locking block, the locking block is located directly above the locking frame, an indicating rod is slidably connected to the support base, a sliding frame is slidably connected to the side of the adjusting frame close to the indicating rod, a control panel is fixedly connected to the support base, and a fastening component for reinforcing and clamping the stressed end of the tape is provided in the adjusting frame.

[0007] As a further preferred scheme, the fastening assembly includes a rack, a rack is fixedly connected to the sliding block, the rack is slidably connected to the bottom wall of the adjusting frame, a rotating shaft is rotatably connected inside the adjusting frame, a gear is fixedly connected to the side of the rotating shaft close to the rack, the gear is meshed with the rack, a worm is fixedly connected to the side of the rotating shaft away from the gear, and a worm wheel is threadedly connected to the side of the locking block away from the knob, and the worm wheel is meshed with the worm wheel.

[0008] As a further preferred embodiment, a measuring mechanism for measuring the length of the tape itself is also included. The measuring mechanism is arranged on the support seat. The measuring mechanism includes a first measuring frame. The first measuring frame is fixed to the side of the support seat close to the sliding frame. The sliding block is fixed with a guide frame. The sliding frame is fixed with a fixed column. The fixed column slides in the guide frame.

[0009] As a further preferred embodiment, a distance measuring mechanism is also included for measuring the deformation distance of the tape after stretching. The distance measuring mechanism is arranged on the indicator rod. The distance measuring mechanism includes a second measuring frame, which is fixed to the indicator rod. An observation block is fixed to the sliding block.

[0010] As a further preferred solution, a telescopic diaphragm is also included, and the telescopic diaphragms for dust prevention are fixedly connected between the top and bottom walls of the adjustment frame and the support seat.

[0011] As a further preferred solution, a handle is also included, and the handle is fixedly connected to the second screw rod.

[0012] As a further preferred solution, a contact switch is also included. The contact switch for controlling the motor to stop running is installed on the sliding block, and the contact switch is electrically connected to the motor.

[0013] As a further preferred solution, both the sliding frame and the indicator rod are provided with magnets, and the sliding frame and the indicator rod are magnetically matched.

[0014] As a further preferred solution, an inclined slideway is provided on the guide frame.

[0015] As a further preferred solution, a transparent glass plate for observation is provided on a side of the support base away from the control panel.

[0016] The invention has the following advantages: the invention uses the fastening assembly to prevent the knob from loosening due to the tensile force when the adhesive tape is stretched, thereby enhancing the stability of the adhesive tape.

[0017] The present invention firstly cooperates with the guide frame and the sliding frame to enable the indicator rod to measure the length of the tape itself, and then accurately measures the deformation distance of the tape through the observation block and the second measuring frame. By measuring the original length and the length after deformation of the tape, the deformation of the tape under specific conditions can be calculated. This measurement method has important application value for understanding the physical properties of the tape, such as elasticity and ductility. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the three-dimensional structure of the first viewing angle of the present invention.

[0019] Figure 2 It is a schematic diagram of the three-dimensional structure of the second viewing angle of the present invention.

[0020] Figure 3 It is a schematic diagram of the three-dimensional structure of the present invention in cross section.

[0021] Figure 4 It is a three-dimensional structural schematic diagram of components such as the motor, the first screw rod and the sliding block of the present invention.

[0022] Figure 5 It is a schematic diagram of the three-dimensional structure of the locking block, knob, spring and other components of the present invention.

[0023] Figure 6 It is a schematic diagram of the three-dimensional structure of the sliding block, the first measuring frame, the guide frame and other components of the present invention.

[0024] Figure 7 It is a three-dimensional structural schematic diagram of the sliding block, the adjusting frame and the guide frame components of the present invention.

[0025] Figure 8 It is a schematic diagram of the three-dimensional structure of the sliding block, the adjustment frame, the second measuring frame and other components of the present invention.

[0026] Fig. 9 It is a three-dimensional structural schematic diagram of the components such as the rotating shaft, gears and rods of the present invention.

[0027] Fig.10 It is a schematic diagram of the three-dimensional structure of the second screw rod, the handle and other components of the present invention.

[0028] Figure numbers: 101-base, 102-support base, 103-motor, 104-first screw, 105-sliding block, 106-adjusting frame, 107-locking frame, 108-second screw, 109-locking block, 110-knob, 111-telescopic diaphragm, 112-spring, 113-indicator rod, 114-sliding frame, 115-control panel, 116-contact switch, 201-first measuring frame, 202-guide frame, 203-fixed column, 301-second measuring frame, 302-observation block, 401-rack, 402-rotating shaft, 403-gear, 404-worm, 405-worm wheel, 501-handle. DETAILED DESCRIPTION

[0029] Although the present invention may be described with respect to a particular application or industry, those skilled in the art will recognize the broader applicability of the present invention. Those of ordinary skill in the art will recognize that terms such as above, below, upward, downward, etc. are used to describe the drawings and do not represent limitations on the scope of the present invention as defined by the appended claims. Any numerical designations such as first or second are merely exemplary and are not intended to limit the scope of the present invention in any way.

[0030] Embodiment 1: A tensile testing machine with adjustable tensile force, such as Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5As shown, it includes a base 101, a support base 102 is fixedly connected to the base 101, a motor 103 is installed on the base 101, a first screw rod 104 is connected to the output shaft of the motor 103 through a coupling, the first screw rod 104 is located in the support base 102, the first screw rod 104 is transferred to the top wall of the support base 102, a sliding block 105 is threadedly connected to the first screw rod 104, the sliding block 105 is slidably connected to the support base 102, an adjusting frame 106 is slidably connected to the sliding block 105, a spring 112 is connected between the bottom of the adjusting frame 106 and the sliding block 105, the spring 112 is wound around the adjusting frame 106, a locking frame 107 is fixedly connected to the base 101, a second screw rod 108 is threadedly connected to the front side of the locking frame 107, and the adjusting frame 106 is slidably connected to the sliding block 105. A locking block 109 is fixedly connected to the bottom wall of the section frame 106, and the knob 110 is threadedly connected to the front side of the locking block 109. The locking block 109 is located directly above the locking frame 107. The indicator rod 113 is slidably connected to the front side of the support seat 102. A sliding frame 114 is slidably connected to the front side of the adjustment frame 106. Both the sliding frame 114 and the indicator rod 113 are provided with magnets. The sliding frame 114 and the indicator rod 113 cooperate with each other by magnetic attraction. A control panel 115 is fixedly connected to the middle part of the rear side of the support seat 102, and a tension detection sensor is installed on the adjustment frame 106. The tension detection sensor is electrically connected to the control panel 115. A transparent glass plate for observation is provided on the front side of the support seat 102, and a fastening component for reinforcing and clamping the stressed end of the tape is provided in the adjustment frame 106.

[0031] like Fig. 9 As shown, the fastening assembly includes a rack 401, which is fixed to the sliding block 105, and the rack 401 is slidably connected to the bottom wall of the adjusting frame 106. A rotating shaft 402 is rotatably connected inside the adjusting frame 106, a gear 403 is fixed to the left side of the rotating shaft 402, and the gear 403 is meshed with the rack 401, a worm 404 is fixed to the right side of the rotating shaft 402, and a worm wheel 405 is threadedly connected to the rear side of the locking block 109, and the worm 404 is meshed with the worm wheel 405.

[0032] like Figure 3 and Fig.10 As shown, a handle 501 is also included, and the handle 501 is fixedly connected to the second screw rod 108.

[0033] like Figure 3 As shown, a telescopic diaphragm 111 is also included. The telescopic diaphragms 111 for dust prevention are fixedly connected between the upper and lower sides of the adjustment frame 106 and the support seat 102 .

[0034] like Figure 7 As shown, a contact switch 116 is also included. The contact switch 116 for controlling the motor 103 to stop running is installed on the upper side of the sliding block 105, and the contact switch 116 is electrically connected to the motor 103.

[0035] When using the device, first fix the tape to be tested between the locking frame 107 and the locking block 109. The specific operation is as follows: the staff first holds the handle 501 and rotates it in the reverse direction to loosen the second screw 108, inserts one end of the tape into the locking frame 107, and then rotates the handle 501 forward so that the second screw 108 and the locking frame 107 clamp the lower end of the tape. In the same operation, loosen the knob 110 and insert the upper end of the tape into the locking block 109, and then tighten the knob 110 so that the tape is clamped and fixed by the knob 110 and the worm gear 405. At this time, the tape has been fixed on the device.

[0036] Then, the motor 103 is controlled to drive the first screw 104 to rotate, thereby driving the sliding block 105 to move upward, and the sliding block 105 will drive the adjusting frame 106 and the locking block 109 to move upward together. The locking block 109 moving upward will straighten the tape, causing the adjusting frame 106 to be pulled by the tape. As the sliding block 105 continues to move upward, the spring 112 will deform, the adjusting frame 106 and the rotating shaft 402 will remain relatively still, and the sliding block 105 will drive the rack 401 to continue to move upward. The upwardly moved rack 401 will drive the rotating shaft 402 and the worm 404 to rotate forwardly through the gear 403, thereby driving the worm wheel 405 to rotate forwardly, and the rotating worm wheel 405 will move forward, so that the worm wheel 405 and the knob 110 will tighten the front and rear sides of the tape, so that the knob 110 will not loosen due to the tension and cause the tape to fall off, thereby enhancing the stability of the tape.

[0037] When the spring 112 is deformed to the limit, the sliding block 105 will continue to pull the adjustment frame 106 upward through the spring 112. At this time, the upper end of the tape begins to receive the tension of the locking block 109, and the tape begins to deform under the action of the tension. As the sliding block 105 continues to move upward, the tension applied by the locking block 109 on the tape gradually increases until the tape is deformed to the extreme and breaks. Since the spring 112 is fully charged, the adjustment frame 106 will bounce upward and reset to hit the contact switch 116, and the contact switch 116 will control the motor 103 to stop running , so that the sliding block 105 no longer moves up, and at the same time, the adjusting frame 106 will drive the rotating shaft 402 to move upward, so that the gear 403 contacts the rack 401, and the rotating shaft 402 drives the worm 404 to reverse, and then drives the worm wheel 405 to move backward and reset. Through the tension detection sensor installed on the adjusting frame 106, the staff can read the maximum tension value that the tape can withstand from the control panel 115. At this time, the test of the tape has been completed, and the staff can loosen the second screw 108 and the knob 110 to take out the tape that is broken into two sections.

[0038] Embodiment 2: Based on embodiment 1, Figure 3 , Figure 6 and Figure 7As shown, it also includes a measuring mechanism for measuring the length of the tape itself. The measuring mechanism is arranged on the support seat 102. The measuring mechanism includes a first measuring frame 201. The first measuring frame 201 is fixedly connected to the front right part of the support seat 102. The front lower part of the sliding block 105 is fixedly connected to a guide frame 202. The right part of the sliding frame 114 is fixedly connected to a fixed column 203. The guide frame 202 is provided with an inclined slideway, and the fixed column 203 slides in the inclined slideway of the guide frame 202.

[0039] like Figure 3 and Figure 8 As shown, it also includes a distance measuring mechanism for measuring the deformation distance of the tape after stretching. The distance measuring mechanism is arranged on the indicator rod 113. The distance measuring mechanism includes a second measuring frame 301, the second measuring frame 301 is fixedly connected to the left part of the indicator rod 113, and the observation block 302 is fixedly connected to the front side of the sliding block 105.

[0040] When the adjusting frame 106 moves upward with the sliding block 105, the sliding block 105 drives the indicating rod 113, the second measuring frame 301 and the guide frame 202 to continue to move upward through the sliding frame 114. When the locking block 109 moving upward straightens the adhesive tape, the adjusting frame 106 is pulled by the adhesive tape, and the adjusting frame 106 is stationary relative to the sliding block 105, so that the sliding frame 114 is also relatively stationary, and the sliding block 105 continues to drive the guide frame 202 to move upward, and the upwardly moving guide frame 202 drives the sliding frame 114 to move to the left through the fixing column 203, so that the magnet on the sliding frame 114 is staggered with the magnet on the indicating rod 113, and the magnetic force does not work, and the sliding frame 114 and the indicating rod 113 are no longer attracted together. At this time, the position where the indicating rod 113 stays on the first measuring frame 201 is the length of the adhesive tape itself.

[0041] As the sliding block 105 continues to move upward, according to the previous steps, the sliding block 105 will drive the adjusting frame 106 to move upward through the spring 112, and the upward adjusting frame 106 will pull the tape through the locking block 109, and the sliding block 105 will drive the observation block 302 to move together. When the tape is broken, the sliding block 105 will drive the second measuring frame 301 to stop moving upward. At this time, the position where the observation block 302 stays on the second measuring frame 301 is the deformation distance of the tape. In summary, first, the guide frame 202 cooperates with the sliding frame 114 to enable the indicator rod 113 to measure the length of the tape itself, and then the deformation distance of the tape can be accurately measured through the observation block 302 and the second measuring frame 301. By measuring the original length and the length after deformation of the tape, the deformation of the tape under specific conditions can be calculated. This measurement method has important application value for understanding the physical properties of the tape, such as elasticity and ductility.

[0042] The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art can easily think of changes or substitutions within the technical scope disclosed by the present invention, which should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. A tensile testing machine with adjustable tensile force, characterized in that: The invention comprises a base (101), a support base (102) is fixedly connected to the base (101), a motor (103) is installed on the base (101), an output shaft of the motor (103) is connected to a first screw rod (104) through a coupling, the first screw rod (104) is located in the support base (102), the first screw rod (104) is connected to the top wall of the support base (102), a sliding block (105) is threadedly connected to the first screw rod (104), the sliding block (105) is slidably connected to the support base (102), an adjusting frame (106) is slidably connected to the sliding block (105), a spring (112) is connected between the bottom of the adjusting frame (106) and the sliding block (105), and the spring (112) is wound around On the adjusting frame (106), a locking frame (107) is fixedly connected to the base (101), a second screw rod (108) is threadedly connected to the locking frame (107), a locking block (109) is fixedly connected to the bottom wall of the adjusting frame (106), a knob (110) is threadedly connected to the locking block (109), and the locking block (109) is located directly above the locking frame (107), an indicating rod (113) is slidably connected to the support seat (102), a sliding frame (114) is slidably connected to a side of the adjusting frame (106) close to the indicating rod (113), a control panel (115) is fixedly connected to the support seat (102), and a fastening component for reinforcing and clamping a stressed end of the adhesive tape is provided in the adjusting frame (106).

2. A tensile testing machine with adjustable tensile force according to claim 1, characterized in that: The fastening assembly comprises a rack (401), the rack (401) is fixedly connected to the sliding block (105), the rack (401) is slidably connected to the bottom wall of the adjusting frame (106), a rotating shaft (402) is rotatably connected inside the adjusting frame (106), a gear (403) is fixedly connected to the side of the rotating shaft (402) close to the rack (401), the gear (403) is meshed with the rack (401), a worm (404) is fixedly connected to the side of the rotating shaft (402) away from the gear (403), and a worm wheel (405) is threadedly connected to the side of the locking block (109) away from the knob (110), and the worm wheel (404) is meshed with the worm wheel (405).

3. A tensile testing machine with adjustable tensile force according to claim 2, characterized in that: The device also includes a measuring mechanism for measuring the length of the adhesive tape. The measuring mechanism is arranged on the support seat (102). The measuring mechanism includes a first measuring frame (201). The first measuring frame (201) is fixedly connected to the side of the support seat (102) close to the sliding frame (114). The sliding block (105) is fixedly connected to the guide frame (202). The sliding frame (114) is fixedly connected to a fixed column (203). The fixed column (203) slides in the guide frame (202).

4. A tensile testing machine with adjustable tensile force according to claim 3, characterized in that: It also includes a distance measuring mechanism for measuring the deformation distance of the adhesive tape after stretching. The distance measuring mechanism is arranged on the indicator rod (113). The distance measuring mechanism includes a second measuring frame (301). The second measuring frame (301) is fixedly connected to the indicator rod (113). The sliding block (105) is fixedly connected to an observation block (302).

5. A tensile testing machine with adjustable tensile force according to claim 4, characterized in that: It also includes a telescopic diaphragm (111), and the telescopic diaphragm (111) for dust prevention is fixedly connected between the top and bottom walls of the adjustment frame (106) and the support seat (102).

6. A tensile testing machine with adjustable tensile force according to claim 5, characterized in that: It also includes a handle (501), which is fixed to the second screw rod (108).

7. A tensile testing machine with adjustable tensile force according to claim 6, characterized in that: The invention also comprises a contact switch (116), which is used for controlling the motor (103) to stop running. The contact switch (116) is installed on the sliding block (105), and the contact switch (116) is electrically connected to the motor (103).

8. A tensile testing machine with adjustable tensile force according to claim 7, characterized in that: Magnets are provided on the sliding frame (114) and the indicating rod (113), and the sliding frame (114) and the indicating rod (113) are matched by magnetic attraction.

9. A tensile testing machine with adjustable tensile force according to claim 8, characterized in that: An oblique slideway is provided on the guide frame (202).

10. A tensile testing machine with adjustable tensile force according to claim 9, characterized in that: A transparent glass plate for observation is provided on one side of the support base (102) away from the control panel (115).

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