Tensile strength detection device and detection method for glass fiber cloth production

Abstract

The invention relates to the technical field of detection devices, and discloses a tensile strength detection device and a detection method for glass fiber cloth production, the tensile strength detection device comprises a detector main body, a base is arranged at the bottom of the detection main body, a through hole is formed in the surface of the base, and an upper conveyor and a lower conveyor corresponding to each other in position are fixedly mounted in the through hole. The lower conveyor, the upper conveyor, the feeding gap, the lower positioning seat, the lower film conveyor, the upper positioning seat, the upper electric heating plate, the stock bin, the upper film conveyor and the driving assembly are mounted on the base, and the feeding gap is inserted before a fiber cloth sample is tested, so that automatic film coating, plastic powder spreading and plastic powder heating can be performed on the two ends of the fiber cloth sample; therefore, automatic edge sealing is achieved, the process is rapid and convenient, manual operation is not needed, compared with the prior art, the workload is reduced, the operation time is shortened in a multi-sample test experiment, the duration of the whole detection experiment is shortened, and the working efficiency is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of detection devices, in particular to a tensile strength detection device and a detection method for glass fiber cloth production. Background Art

[0002] The physical property test of glass fiber cloth is mainly used to determine the physical properties of glass fiber cloth, among which tensile strength test is one of the common test items. During the operation, the glass fiber cloth needs to be cut into multiple rectangular pieces of standard size. Then, the two ends of the fiber cloth are respectively mounted on two clamps on the electronic tensile tester. The electronic tensile tester controls the clamps to move at a certain speed and monitors the tensile force changes through sensors. Finally, a tensile force change curve is automatically drawn, and the characteristics of the fiber cloth can be analyzed based on the curve. However, there are certain shortcomings in the existing technology: before the fiber cloth is tested, it is generally necessary to perform an edge sealing operation at the clamping points of the two clamps of the fiber cloth. The specific steps are to place cardboard under the ends of the fiber cloth, then evenly spread plastic powder, such as polyvinyl butyral, on the ends of the fiber cloth, then fold the cardboard to cover the plastic powder, and finally use an electric iron to heat the plastic powder so that the plastic powder melts and penetrates the fiber cloth. When multiple samples need to be tested, this manual edge sealing operation of the fiber cloth will consume a lot of time, resulting in extended testing time and reduced testing efficiency. Summary of the Invention

[0003] In response to the shortcomings of the existing technology, the present invention provides a tensile strength testing device and a testing method for glass fiber cloth production, which have the advantages of high degree of automation and high testing efficiency. It solves the problem that the existing tensile testing equipment, when testing glass fiber cloth, requires cumbersome sample preparation, has a large workload, and leads to prolonged testing time.

[0004] To solve the above technical problems, the present invention provides the following technical solutions: a tensile strength testing device, comprising a testing instrument body, a base provided at the bottom of the testing instrument body, a through hole formed on the surface of the base, an upper conveyor and a lower conveyor fixedly installed in corresponding positions in the through hole, a feeding gap provided between the upper conveyor and the lower conveyor, and the upper conveyor and the lower conveyor being used to drive the sample to move in the feeding gap;

[0005] The lower film conveyor is provided on one side of the upper positioning seat, and the upper film conveyor is used to convey the upper protective film to the bottom of the upper electric heating plate. The upper positioning seat is fixed on both sides of the upper conveyor, and the upper positioning seat and the lower positioning seat are both used to position the sample end. The bottom surface of the upper positioning seat is provided with a groove, and the upper electric heating plate and the material bin are provided in the groove. The upper film conveyor is provided on one side of the upper positioning seat, and the upper film conveyor is used to convey the upper protective film to the bottom of the upper electric heating plate. A driving assembly is installed on the upper positioning seat, and the driving assembly is used to drive the upper electric heating plate, the material bin and the upper film conveyor to move;

[0006] The upper film conveyor operates and conveys the lower protective film to the top surface of the lower heating plate. The upper film conveyor operates and conveys the upper protective film to the bottom of the upper heating plate. Then the upper conveyor and the lower conveyor operate to drive the sample to move in the feed gap. When the end of the sample moves to the top of the lower protective film, the hopper and the drive assembly operate, forcing the hopper to move horizontally while discharging the material, thereby spreading plastic powder on the surface of the sample. Then the drive assembly drives the upper heating plate and the upper film conveyor downward, so that the upper protective film covers the end of the sample. Finally, the upper and lower heating plates heat and melt the plastic powder to achieve edge sealing.

[0007] Preferably, a shallow groove is provided on the top surface of the lower positioning seat, and the shallow groove is located directly below the groove, and the lower electric heating plate is fixedly embedded in the shallow groove, and the lower film conveyor includes a lower shell fixed on one side of the lower positioning seat, and a lower output port is provided on the lower shell, and the lower output port is connected to the edge of the shallow groove, and a lower storage shaft and a lower drive roller are rotatably connected inside the lower shell, and a lower protective film roll is stored on the lower storage shaft, and an end of the lower protective film roll passes through between the lower drive roller and the inner wall of the lower shell and extends outward through the lower output port, and a lower drive motor is fixed to the outside of the lower shell, and the output shaft of the lower drive motor is fixed to the end of the lower drive roller.

[0008] Preferably, the driving assembly includes an electric push rod fixed on the top of the upper positioning seat and arranged vertically, the output end of the electric push rod extends into the inside of the groove and is fixedly connected to the movable seat, the upper electric heating plate is fixed on the bottom surface of the movable seat, the upper film conveyor is fixedly installed on one side of the movable seat, and the silo is located below the movable seat and is transmission-connected to the movable seat.

[0009] Preferably, the upper film conveyor includes an upper shell, an upper output port is provided on the upper shell, the upper output port is connected to the bottom edge of the movable seat, an upper storage shaft and an upper drive roller are rotatably connected inside the upper shell, an upper protective film roll is stored on the upper storage shaft, an end portion of the upper protective film roll passes between the upper drive roller and the inner wall of the upper shell and extends outward through the upper output port, an upper drive motor is fixed to the outside of the upper shell, and an output shaft of the upper drive motor is fixed to the end portion of the upper drive roller.

[0010] Preferably, a receiving groove is provided on the side wall of the groove, a strip-shaped hole is provided on the top of the receiving groove, a rack is fixedly connected to the top of the movable seat, a screw is provided above the strip-shaped hole, one end of the screw is rotatably connected to the upper positioning seat, and the other end of the screw is installed on the upper positioning seat through the main bearing seat, one end of the screw extends into the groove and is fixed with a gear, the gear is meshed with the rack, a nut sleeve is threadedly connected to the screw, the nut sleeve is slidably connected to the strip-shaped hole, and the bottom end of the nut sleeve extends into the receiving groove and is connected to the silo.

[0011] Preferably, a strip-shaped discharge port is provided at the bottom of the silo, a vertical motor is fixedly connected to the outer wall of the silo, an eccentric block is fixed to the output shaft of the vertical motor, a support rod is rotatably connected to the bottom surface of the eccentric block near the edge, a gate plate is hinged at one end of the support rod, and the gate plate is movably inserted into the strip-shaped discharge port, the silo is hinged to the nut sleeve, and a push spring is also fixedly connected to one end of the nut sleeve connected to the silo, and one end of the push spring is fixed to the side wall of the silo.

[0012] Preferably, an opening is provided on the top surface of the lower output port, which forces the lower protective film in the lower output port to be partially exposed, and a strip cut is provided on the bottom surface of the upper output port, which is connected to the interior of the upper output port, and a tool is provided in the strip cut, and a reset spring is fixed between the end of the tool and the top wall of the strip cut.

[0013] Preferably, the length of the lower conveyor extending to the outside of the base at both ends is greater than the length of the upper conveyor extending to the outside of the base, and a positioning component is provided at the feeding end of the feeding gap, and the positioning component is used to pre-position the sample placed in the feeding gap.

[0014] Preferably, the positioning assembly includes a transverse motor fixed to the outer wall of the base, a worm is fixed to the output end of the transverse motor, two sets of threads are provided on the worm, and the worm is installed outside the base through a secondary bearing seat. The positioning assembly also includes two base shafts, and the two base shafts are rotatably connected to the ends of the two upper positioning seats respectively. A worm gear and a positioning rod are fixed on the base shaft, and the worm gear is engaged with the worm. The two positioning rods are symmetrically positioned, and both of the positioning rods are used to block samples from entering the feed gap.

[0015] The present invention also discloses a method for detecting the production of glass fiber cloth, which uses the above-mentioned tensile strength detection device.

[0016] Compared with the prior art, the present invention provides a tensile strength detection device and a detection method for glass fiber cloth production, which have the following beneficial effects:

[0017] 1. This tensile strength testing device and testing method for glass fiber cloth production, by installing a lower conveyor, an upper conveyor, a feed gap, a lower positioning seat, a lower film conveyor, an upper positioning seat, an upper electric heating plate, a silo, an upper film conveyor and a drive component on a base, and inserting the feed gap before the fiber cloth sample is tested, can automatically coat the two ends of the fiber cloth sample with film, spread plastic powder and heat the plastic powder, thereby realizing automatic edge sealing. The process is quick and convenient, and no manual operation is required. Compared with the existing technology, the workload is reduced, the operation time is shortened in multi-sample testing experiments, and the duration of the entire testing experiment is shortened, thereby improving work efficiency.

[0018] 2. This tensile strength testing device and testing method for glass fiber cloth production, by setting up a hopper, uses a vertical motor to control the opening and closing of the strip discharge port, and then discharges the plastic powder. At the same time, starting the electric push rod can drive the hopper to move inside the storage tank, so that the plastic powder is spread more evenly. In addition, if it is necessary to reduce the amount of plastic powder spread, starting the vertical motor can push the gate plate to move back and forth, so that the discharge amount is reduced, and the rotation of the eccentric block also causes the hopper to shake, and when the hopper shakes, it resets under the action of the push spring, thereby achieving a vibration effect, which can effectively avoid the blockage of the strip discharge port during discharge.

[0019] 3. This tensile strength testing device and testing method for glass fiber cloth production, by setting a positioning component, the sample is blocked by two positioning rods before entering the feed gap, so that the sample is placed horizontally, and then when the transverse motor is started, the positioning rods are driven to rotate. After the positioning rods rotate, they no longer block the sample, so that the sample remains in a horizontal state and enters the feed gap, preventing the sample from tilting and affecting the edge sealing operation when entering the feed gap. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the three-dimensional structure of a tensile strength testing device of the present invention;

[0021] Figure 2 A partial cross-sectional view of the base of the present invention;

[0022] Figure 3 It is a schematic diagram of the three-dimensional structure of the upper conveyor and the lower conveyor of the present invention;

[0023] Figure 4 It is an exploded view of the structure of the lower film conveyor of the present invention;

[0024] Figure 5 For the present invention Figure 4 A magnified view of part A;

[0025] Figure 6 A partial cross-sectional view of the upper positioning seat of the present invention;

[0026] Figure 7 For the present invention Figure 6 A magnified view of part B;

[0027] Figure 8 It is a structural schematic diagram of the movable seat of the present invention;

[0028] Figure 9 For the present invention Figure 8 Magnified view of part C;

[0029] Figure 10 It is a structural schematic diagram of the positioning component of the present invention.

[0030] In the figure: 1. Detector body; 2. Base; 3. Through hole; 4. Upper conveyor; 5. Lower conveyor; 6. Feed gap; 7. Lower positioning seat; 71. Shallow groove; 8. Lower electric heating plate; 9. Lower film conveyor; 91. Lower shell; 92. Lower output port; 93. Lower storage shaft; 94. Lower driving roller; 95. Lower driving motor; 96. Opening; 10. Upper positioning seat; 11. Groove; 111. Storage slot; 112. Strip hole; 12. Upper electric heating plate; 13. Material bin; 131. Strip discharge port; 132. Vertical motor; 13 3. Eccentric block; 134. Support rod; 135. Gate; 136. Push spring; 14. Upper film conveyor; 141. Strip incision; 142. Cutting tool; 143. Return spring; 15. Driving assembly; 151. Electric push rod; 152. Movable seat; 153. Rack; 154. Screw; 155. Main bearing seat; 156. Gear; 157. Nut sleeve; 16. Positioning assembly; 161. Transverse motor; 162. Worm; 163. Auxiliary bearing seat; 164. Base shaft; 165. Worm gear; 166. Positioning rod. DETAILED DESCRIPTION

[0031] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0032] As introduced in the background technology, there are deficiencies in the existing technology. In order to solve the above technical problems, this application proposes a tensile strength detection device and a detection method for glass fiber cloth production.

[0033] Example 1: Please refer to Figures 1-8A tensile strength testing device includes a detector body 1, a base 2 is provided at the bottom of the detection body, a through hole 3 is opened on the surface of the base 2, an upper conveyor 4 and a lower conveyor 5 corresponding to the position are fixedly installed in the through hole 3, a feeding gap 6 is provided between the upper conveyor 4 and the lower conveyor 5, and the upper conveyor 4 and the lower conveyor 5 are used to drive the sample to move in the feeding gap 6;

[0034] The lower conveyor 5 is fixed with a lower positioning seat 7 on both sides, and a lower electric heating plate 8 is fixedly installed on the top surface of the lower positioning seat 7. A lower film conveyor 9 is installed on the side wall of the lower positioning seat 7. The lower film conveyor 9 is used to convey the lower protective film to the top of the lower electric heating plate 8. Upper positioning seats 10 are fixed on both sides of the upper conveyor 4. The upper positioning seat 10 and the lower positioning seat 7 are both used to position the end of the sample. A groove 11 is provided on the bottom surface of the upper positioning seat 10, and an upper electric heating plate 12 and a silo 13 are provided in the groove 11. An upper film conveyor 14 is provided on one side of the upper positioning seat 10. The upper film conveyor 14 is used to convey the upper protective film to the bottom of the upper electric heating plate 12. A driving assembly 15 is installed on the upper positioning seat 10, and the driving assembly 15 is used to drive the upper electric heating plate 12, the silo 13 and the upper film conveyor 14 to move;

[0035] The upper film conveyor 14 operates and conveys the lower protective film to the top surface of the lower electric heating plate 8. The upper film conveyor 14 operates and conveys the upper protective film to the bottom of the upper electric heating plate 12. Then the upper conveyor 4 and the lower conveyor 5 operate to drive the sample to move in the feed gap 6. When the end of the sample moves to the top of the lower protective film, the hopper 13 and the drive assembly 15 operate, forcing the hopper 13 to move horizontally while discharging the material, thereby spreading plastic powder on the surface of the sample. Then the drive assembly 15 drives the upper electric heating plate 12 and the upper film conveyor 14 to move downward, so that the upper protective film covers the end of the sample. Finally, the upper electric heating plate 12 and the lower electric heating plate 8 heat and melt the plastic powder to achieve edge sealing.

[0036] Among them, the top surface of the lower positioning seat 7 and the bottom surface of the upper positioning seat 10 are both set to horizontal planes. The sample in this embodiment is set to be a glass fiber cloth cut into long strips. The upper conveyor 4 and the lower conveyor 5 are both set horizontally. The height of the feed gap 6 is less than the thickness of the fiber cloth sample. The lower electric heating plate 8 and the upper electric heating plate 12 can both be heated by power supply. The upper protective film and the lower protective film are used to prevent damage to the fiber cloth sample when heating the plastic powder;

[0037] During use, if it is necessary to perform edge sealing operation on the glass fiber cloth sample, start the lower film conveyor 9 and the upper film conveyor 14. After the lower film conveyor 9 is running, it conveys the lower protective film to the top surface of the upper heating plate 12 so that the lower protective film covers the lower heating plate 8. After the upper film conveyor 14 is running, it conveys the upper protective film to the bottom of the upper heating plate 12. Then, the upper conveyor 4 and the lower conveyor 5 are started to insert the sample horizontally into the feed gap 6. At this time, the middle part of the sample is clamped and driven by the conveyor and the lower conveyor 5. When the sample moves inside the feed gap 6, the end of the sample moves between the upper positioning seat 10 and the lower positioning seat 7. Finally, when the end of the sample just moves to the top of the lower protective film, it stops. At this time, the drive component 15 and The hopper 13 discharges plastic powder to the surface of the sample end when the hopper 13 is in operation, and at the same time, the driving component 15 forces the hopper 13 to move horizontally, forcing the hopper 13 to spread more evenly on the sample surface. After spreading, the driving component 15 drives the upper electric heating plate 12 and the upper film conveyor 14 to move downward, so that the upper protective film first covers the top of the plastic powder, and the upper electric heating plate 12 presses the upper protective film. Subsequently, the upper electric heating plate 12 and the lower electric heating plate 8 operate and heat, so that the plastic powder melts and the lower protective film, the sample end and the upper protective film are bonded together, thereby realizing the edge sealing process. After the edge sealing is completed, the driving component 15 controls the upper electric heating plate 12 to reset, and the upper conveyor 4 and the lower conveyor 5 operate to discharge the edge-sealed sample;

[0038] By installing the lower conveyor 5, the upper conveyor 4, the feed gap 6, the lower positioning seat 7, the lower film conveyor 9, the upper positioning seat 10, the upper electric heating plate 12, the silo 13, the upper film conveyor 14 and the drive assembly 15 on the base 2, and inserting the feed gap 6 before the fiber cloth sample is tested, the two ends of the fiber cloth sample can be automatically coated, plastic powder can be spread and the plastic powder can be heated, thereby realizing automatic edge sealing. The process is quick and convenient, and no manual operation is required. Compared with the existing technology, the workload is reduced, the operation time is shortened in the multi-sample testing experiment, and the duration of the entire detection experiment is shortened, thereby improving work efficiency.

[0039] Example 2: See Figure 3-Figure 8, different from the above embodiment, the top surface of the lower positioning seat 7 is provided with a shallow groove 71, and the shallow groove 71 is located just below the groove 11, and the lower electric heating plate 8 is fixedly embedded in the shallow groove 71, and the lower film conveyor 9 includes a lower shell 91 fixed to one side of the lower positioning seat 7, and a lower output port 92 is provided on the lower shell 91, and the lower output port 92 is connected to the edge of the shallow groove 71, and the lower shell 91 is rotatably connected to the lower storage shaft 93 and the lower drive roller 94, and the lower storage shaft 93 is used to store the lower protective film roll, and the end of the lower protective film roll passes between the lower drive roller 94 and the inner wall of the lower shell 91 and extends outward through the lower output port 92. A lower drive motor 95 is fixed to the outside of the lower shell 91, and the output shaft of the lower drive motor 95 is fixed to the end of the lower drive roller 94, and the drive assembly 15 includes a lower shell 91 fixed to the top of the upper positioning seat 10 and And the electric push rod 151 is arranged vertically, and the output end of the electric push rod 151 extends to the inside of the groove 11 and is fixedly connected to the movable seat 152, the upper electric heating plate 12 is fixed to the bottom surface of the movable seat 152, and the upper film conveyor 14 is fixedly installed on one side of the movable seat 152, the silo 13 is located below the movable seat 152 and is transmission connected to the movable seat 152, and the upper film conveyor 14 includes an upper shell, an upper output port is provided on the upper shell, and the upper output port is connected to the bottom edge of the movable seat 152, and an upper storage shaft and an upper drive roller are rotatably connected inside the upper shell, and an upper protective film roll is stored on the upper storage shaft, and the end of the upper protective film roll passes between the upper drive roller and the inner wall of the upper shell and extends outward through the upper output port, and an upper drive motor is fixed to the outside of the upper shell, and the output shaft of the upper drive motor is fixed to the end of the upper drive roller.

[0040] The lower shell 91 and the upper shell are both whistle-shaped and have removable covers on their surfaces to facilitate replacement of the protective film roll inside. The lower protective film roll is clamped by the lower drive roller 94 and the inner wall of the lower shell 91, while the upper protective film roll is clamped by the upper drive roller and the inner wall of the upper shell. The lower output port 92 and the upper output port are both horizontally arranged, so that the lower protective film roll and the upper protective film roll can be output horizontally.

[0041] When in use, the lower drive motor 95 is started, and the lower drive motor 95 drives the lower drive roller 94 to rotate. When the lower drive roller 94 rotates, it pushes the lower protective film roll, so that the end of the lower protective film roll is discharged into the shallow groove 71 through the lower output port 92 and just covers the top surface of the lower electric heating plate 8. Similarly, when the upper drive motor is started, the upper protective film roll is forced to extend to the bottom surface of the upper electric heating plate 12. In subsequent operations, the electric push rod 151 is started, and the electric push rod 151 extends to drive the movable seat 152 to move downward. When the movable seat 152 moves downward, it also drives the upper electric heating plate 12 and the entire upper film conveyor 14 to move downward, and at the same time, it can also drive the hopper 13 to move horizontally under the transmission action;

[0042] By setting the lower film conveyor 9 and the upper film conveyor 14, it is beneficial to convey the lower protective film to the surface of the lower electric heating plate 8 and to convey the upper protective film to the bottom surface of the upper electric heating plate 12, which is beneficial to supporting and covering the end of the fiber mesh cloth and avoiding damage to the end of the fiber mesh cloth during subsequent heating.

[0043] Example 3, see Figure 6 and Figure 7 , which is different from the above embodiment, the side wall of the groove 11 is provided with a receiving groove 111, and the top of the receiving groove 111 is provided with a strip hole 112. The top of the movable seat 152 is fixedly connected to a rack 153, and a screw 154 is provided above the strip hole 112. One end of the screw 154 is rotatably connected to the upper positioning seat 10, and the other end of the screw 154 is installed on the upper positioning seat 10 through the main bearing seat 155. One end of the screw 154 extends into the groove 11 and is fixed with a gear 156, and the gear 156 is meshed with the rack 153. A nut sleeve 157 is threadedly connected to the screw 154, and the nut sleeve 157 is slidably connected to the strip hole 112. The bottom end of the nut sleeve 157 extends into the receiving groove 111 and is connected to the silo 13. A strip discharge port 131 is provided at the bottom of the silo 13. The outer wall of the silo 13 is fixedly connected to a vertical motor 132. The output shaft of the vertical motor 132 is fixed with an eccentric block 133. The bottom surface of the eccentric block 133 is rotatably connected to a support rod 134 near the edge. One end of the support rod 134 is hinged to a gate plate 135, and the gate plate 135 is movably inserted into the strip discharge port 131. The silo 13 is hinged to the nut sleeve 157. The nut sleeve 157 is also fixedly connected to the end connected to the silo 13 with a push spring 136. One end of the push spring 136 is fixed to the side wall of the silo 13.

[0044] Among them, plastic powder is pre-stored inside the silo 13, the strip hole 112, the screw 154 and the receiving groove 111 extend in the same direction, the nut sleeve 157 is set to be L-shaped, and the vertical motor 132 is set to be a stepping motor;

[0045] When in use, the vertical motor 132 is started, and the vertical motor 132 drives the eccentric block 133 to rotate a certain angle, which can drive one end of the support rod 134 to move. When one end of the support rod 134 moves, the other end pulls the gate plate 135, so that the strip discharge port 131 is opened, and the plastic powder is discharged to the bottom. At the same time, after starting the electric push rod 151, the movable seat 152 is controlled to move downward. When the movable seat 152 moves downward, it drives the rack 153 to move downward. When the rack 153 moves downward, it drives the gear 156 to rotate. When the gear 156 rotates, it drives the screw 154 to rotate. When the screw 154 rotates, it drives the nut sleeve 157 to move along the strip hole 112, thereby driving the incoming bin 13 to move into the receiving groove 111. The bin 13 discharges while moving, and the plastic particles are evenly spread on the surface of the end of the fiber cloth. When the bin 13 completely enters the receiving groove 111, the vertical motor 132 is operated again, driving the gate plate 135 to move and close the strip discharge port 131.

[0046] By setting up the silo 13, the vertical motor 132 is used to control the opening and closing of the strip discharge port 131, thereby discharging the plastic powder. At the same time, the electric push rod 151 is started to drive the silo 13 to move toward the inside of the storage tank 111, so that the plastic powder is spread more evenly. In addition, if it is necessary to reduce the amount of plastic powder spread, the vertical motor 132 is started to force the eccentric block 133 to rotate continuously, and then the gate plate 135 is pushed back and forth through the support rod 134, so that the discharge amount is reduced, and the rotation of the eccentric block 133 also causes the silo 13 to shake. When the silo 13 shakes, it is reset under the action of the push spring 136, thereby achieving a vibration effect, which can effectively avoid the strip discharge port 131 from being blocked during discharge.

[0047] Example 4, see Figure 5 、 Figure 8 and Figure 9 , different from the above embodiment, an opening 96 is provided on the top surface of the lower output port 92, and the opening 96 forces the lower protective film in the lower output port 92 to be partially exposed. A strip cutout 141 is provided on the bottom surface of the upper output port, and the strip cutout 141 is connected to the interior of the upper output port. A cutter 142 is provided in the strip cutout 141, and a return spring 143 is fixed between the end of the cutter 142 and the top wall of the strip cutout 141.

[0048] The cutter 142 is provided with blades at both the bottom and the top. When in use, when the entire upper film conveyor 14 moves downward along with the movable seat 152, the cutter 142 also moves downward, and finally the cutter 142 contacts the lower protective film in the opening 96, cutting off the lower protective film. Then, the upper film conveyor 14 continues to move downward, compressing the return spring 143 until the top of the cutter 142 contacts the upper protective film in the upper output port, cutting off the upper protective film.

[0049] By setting the cutter 142, when the upper film conveyor 14 moves downward, the upper protective film and the lower protective film can be cut off by the cutter 142, which is conducive to the reuse of the upper protective film and the lower protective film, and further facilitates the continuous edge sealing operation of the sample.

[0050] Example 5, see Figure 3 and Figure 10 , different from the above embodiment, the length of the lower conveyor 5 extending to the outside of the base 2 at both ends is greater than the length of the upper conveyor 4 extending to the outside of the base 2, and a positioning assembly 16 is provided at one end of the feed gap 6, and the positioning assembly 16 is used to pre-position the sample placed in the feed gap 6, and the positioning assembly 16 includes a transverse motor 161 fixed to the outer wall of the base 2, and a worm 162 is fixed to the output end of the transverse motor 161, and two sets of threads are provided on the worm 162, and the worm 162 is installed outside the base 2 through a secondary bearing seat 163. The positioning assembly 16 also includes two base shafts 164, and the two base shafts 164 are respectively rotatably connected to the ends of the two upper positioning seats 10, and a worm gear 165 and a positioning rod 166 are fixed on the base shaft 164, and the worm gear 165 is engaged with the worm 162. The two positioning rods 166 are symmetrically positioned, and the two positioning rods 166 are both used to block samples from entering the feed gap 6.

[0051] Among them, two groups of threads are provided on the worm 162, and the two groups of threads are matched with the two worm wheels 165. In the initial state, the two positioning rods 166 are vertically arranged. When in use, the sample is placed horizontally on the surface of the lower conveyor 5. The sample is transported by the lower conveyor 5 and moves. Before entering the feed gap 6, it is blocked by the two positioning rods 166 to ensure the horizontal placement of the sample. Then, when the horizontal motor 161 is started, the worm 162 is driven to rotate. When the worm 162 rotates, the worm wheel 165 is driven to rotate. When the worm wheel 165 rotates, the base shaft 164 and the positioning rod 166 are rotated. After the positioning rod 166 rotates, it no longer blocks the sample, so that the sample remains in a horizontal state and enters the feed gap 6, preventing the sample from tilting and affecting the edge sealing operation when entering the feed gap 6.

[0052] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A tensile strength testing device, comprising a testing body, wherein a base is provided at the bottom of the testing body, characterized in that: A through hole is provided on the surface of the base, and an upper conveyor and a lower conveyor corresponding to the position are fixedly installed in the through hole, and a feeding gap is provided between the upper conveyor and the lower conveyor, and the upper conveyor and the lower conveyor are used to drive the sample to move in the feeding gap; The lower film conveyor is provided on one side of the upper positioning seat, and the upper film conveyor is used to convey the upper protective film to the bottom of the upper electric heating plate. The upper positioning seat is fixed on both sides of the upper conveyor, and the upper positioning seat and the lower positioning seat are both used to position the sample end. The bottom surface of the upper positioning seat is provided with a groove, and the upper electric heating plate and the material bin are provided in the groove. The upper film conveyor is provided on one side of the upper positioning seat, and the upper film conveyor is used to convey the upper protective film to the bottom of the upper electric heating plate. A driving assembly is installed on the upper positioning seat, and the driving assembly is used to drive the upper electric heating plate, the material bin and the upper film conveyor to move; The upper film conveyor operates and conveys the lower protective film to the top surface of the lower heating plate. The upper film conveyor operates and conveys the upper protective film to the bottom of the upper heating plate. Then the upper conveyor and the lower conveyor operate to drive the sample to move in the feed gap. When the end of the sample moves to the top of the lower protective film, the hopper and the drive assembly operate, forcing the hopper to move horizontally while discharging the material, thereby spreading plastic powder on the surface of the sample. Then the drive assembly drives the upper heating plate and the upper film conveyor downward, so that the upper protective film covers the end of the sample. Finally, the upper and lower heating plates heat and melt the plastic powder to achieve edge sealing.

2. A tensile strength testing device according to claim 1, characterized in that: The top surface of the lower positioning seat is provided with a shallow groove, and the shallow groove is located directly below the groove. The lower electric heating plate is fixedly embedded in the shallow groove. The lower film conveyor includes a lower shell fixed on one side of the lower positioning seat, and a lower output port is provided on the lower shell, and the lower output port is connected to the edge of the shallow groove. The lower shell is rotatably connected to the lower storage shaft and the lower drive roller. The lower storage shaft stores the lower protective film roll, and the end of the lower protective film roll passes through between the lower drive roller and the inner wall of the lower shell and extends outward through the lower output port. A lower drive motor is fixed to the outside of the lower shell, and the output shaft of the lower drive motor is fixed to the end of the lower drive roller.

3. The tensile strength testing device according to claim 2, characterized in that: The driving assembly includes an electric push rod fixed on the top of the upper positioning seat and arranged vertically, the output end of the electric push rod extends into the groove and is fixedly connected to the movable seat, the upper electric heating plate is fixed on the bottom surface of the movable seat, the upper film conveyor is fixedly installed on one side of the movable seat, and the silo is located below the movable seat and is transmission-connected to the movable seat.

4. A tensile strength testing device according to claim 3, characterized in that: The upper film conveyor includes an upper shell, an upper output port is provided on the upper shell, and the upper output port is connected to the bottom edge of the movable seat. An upper storage shaft and an upper drive roller are rotatably connected inside the upper shell, and an upper protective film roll is stored on the upper storage shaft. The end of the upper protective film roll passes between the upper drive roller and the inner wall of the upper shell and extends outward through the upper output port. An upper drive motor is fixed to the outside of the upper shell, and the output shaft of the upper drive motor is fixed to the end of the upper drive roller.

5. The tensile strength testing device according to claim 3, characterized in that: A receiving groove is provided on the side wall of the groove, a strip-shaped hole is provided on the top of the receiving groove, a rack is fixedly connected to the top of the movable seat, a screw is provided above the strip-shaped hole, one end of the screw is rotatably connected to the upper positioning seat, and the other end of the screw is installed on the upper positioning seat through the main bearing seat, one end of the screw extends into the groove and is fixed with a gear, the gear is meshed with the rack, a nut sleeve is threadedly connected to the screw, the nut sleeve is slidably connected to the strip-shaped hole, and the bottom end of the nut sleeve extends into the receiving groove and is connected to the silo.

6. The tensile strength testing device according to claim 5, characterized in that: A strip discharge port is provided at the bottom of the silo, a vertical motor is fixedly connected to the outer wall of the silo, an eccentric block is fixed to the output shaft of the vertical motor, a support rod is rotatably connected to the bottom surface of the eccentric block near the edge, a gate plate is hinged at one end of the support rod, and the gate plate is movably inserted into the strip discharge port, the silo is hinged to the nut sleeve, and the nut sleeve is also fixedly connected to a push spring at one end connected to the silo, and one end of the push spring is fixed to the side wall of the silo.

7. The tensile strength testing device according to claim 4, characterized in that: An opening is provided on the top surface of the lower output port, which forces the lower protective film in the lower output port to be partially exposed. A strip cut is provided on the bottom surface of the upper output port, which is connected to the interior of the upper output port. A tool is provided in the strip cut, and a reset spring is fixed between the end of the tool and the top wall of the strip cut.

8. The tensile strength testing device according to claim 1, characterized in that: The length of the lower conveyor extending to the outside of the base is greater than the length of the upper conveyor extending to the outside of the base. A positioning component is provided at the feeding end of the feeding gap, and the positioning component is used to pre-position the sample placed in the feeding gap.

9. The tensile strength testing device according to claim 8, characterized in that: The positioning assembly includes a transverse motor fixed to the outer wall of the base, a worm is fixed to the output end of the transverse motor, two sets of threads are provided on the worm, and the worm is installed outside the base through a secondary bearing seat. The positioning assembly also includes two base shafts, which are rotatably connected to the ends of the two upper positioning seats respectively, and a worm wheel and a positioning rod are fixed on the base shaft, the worm wheel is engaged with the worm, and the two positioning rods are symmetrically positioned, and both of the positioning rods are used to block samples from entering the feed gap.

10. A method for detecting the production of glass fiber cloth, characterized in that: The glass fiber cloth production detection method uses a tensile strength detection device as described in any one of claims 1-9.

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