High-performance capacitor BOPP film stretching detection device
By designing a high-performance capacitor BOPP film stretching detection device with negative pressure adsorption and clamping block components, the problem of unstable tightness of the film in the initial state is solved, and high-precision stretching detection is achieved.
Patent Information
- Application Number
- CN202510649484.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-05-20
- Publication Date
- 2025-09-12
AI Technical Summary
When existing BOPP film stretching testing equipment performs stretching operations, the tightness of the film in its initial state cannot be guaranteed, which affects the test accuracy.
A high-performance capacitor BOPP film stretching test device was designed. The film was adsorbed by a lower trough under negative pressure to keep it straight. The clamping block assembly and flattening parts were used to ensure that the film remained stable during the stretching process. Precise tensile testing was performed in combination with a tensile testing machine.
By keeping the film in its initial straight state, the influence of the stretching operation on the test accuracy is reduced, thus ensuring the accuracy and reliability of the test results.
Smart Images
Figure CN120628786A_ABST
Abstract
Description
Technical Field
[0001] The invention belongs to the technical field of film detection, and in particular relates to a high-performance capacitor BOPP film stretching detection device. Background Art
[0002] BOPP film, short for biaxially oriented polypropylene film, is a plastic film produced through a biaxial stretching process. Its main raw material is polypropylene (PP). It has the advantages of being lightweight, non-toxic, odorless, moisture-proof, having high mechanical strength, good dimensional stability, good printing performance, and good transparency. It is widely used in capacitors, food packaging, tobacco packaging, daily chemical product packaging, tape manufacturing and other fields.
[0003] During the production process, BOPP film requires physical and chemical property testing, such as using tensile testing equipment to test the film's tensile properties. This testing utilizes a clamp to hold the film at both ends, which then moves the ends to stretch the film. Existing tensile testing equipment typically manually secures the film's ends to the clamps. This can affect test accuracy because the film's initial tightness cannot be guaranteed during the stretching operation.
[0004] Aiming at the above problems, a high-performance capacitor BOPP film stretching detection device is designed. Summary of the Invention
[0005] The present invention aims to solve the problems in the prior art and proposes the following technical solutions:
[0006] High-performance capacitor BOPP film tensile testing device, including:
[0007] A lower clamp, the lower clamp comprising a lower body, a lower clamping groove longitudinally distributed on the lower body, a lower groove body distributed on the lower body and communicating with the lower clamping groove, one side of the lower clamping groove being a lower clamping wall;
[0008] An upper clamp is arranged relative to the lower clamp in the vertical direction and moves linearly relative to the lower clamp in the vertical direction, the upper clamp comprising an upper body, an upper clamping groove longitudinally distributed on the upper body, and an upper groove body distributed on the upper body and communicating with the upper clamping groove, one side of the upper clamping groove being an upper clamping wall;
[0009] Two groups of clamping block assemblies, the two groups of clamping block assemblies corresponding to the lower clamping wall and the upper clamping wall respectively, and the clamping block assemblies include blocks that reciprocate in the horizontal direction;
[0010] A straightening member, comprising an air duct connected to the lower tank body and a fan mounted on the air duct, wherein the fan operates to place the lower tank body in a negative pressure state;
[0011] Among them, the two ends of the film are respectively placed inside the upper trough body and the lower trough body to fix the film in the upper trough body. The lower trough body in the negative pressure state adsorbs the film. The film remains straight and contacts with the lower clamping wall and the upper clamping wall. The block is controlled to move toward the film to resist and fix the film.
[0012] As a preferred embodiment of the above technical solution, the upper clamp and the lower clamp are both assembled on the tensile testing machine body, and the loading system on the tensile testing machine body drives the upper clamp to perform linear motion in the up and down directions.
[0013] As a preferred embodiment of the above technical solution, the upper trough body has a positioning wall, and the end of the film contacts the positioning wall.
[0014] As a preferred embodiment of the above technical solution, the lower main body is provided with an air hole communicating with the lower trough body and the outside of the lower main body, and the air duct is assembled inside the air hole.
[0015] As a preferred embodiment of the above technical solution, a mounting hole 1 is provided on each of the lower body and the upper body, and the block is slidably assembled inside the mounting hole 1;
[0016] The clamping block assembly also includes a screw, which is threadedly matched with a threaded hole provided on the block. A sliding groove is provided on the block, in which a slider is slidably fitted, and the slider is assembled with the mounting hole.
[0017] As a preferred embodiment of the above technical solution, one end of the screw rod extends to the outside of the first mounting hole and is equipped with a torsion rod.
[0018] As a preferred embodiment of the above technical solution, it also includes a flattening part, which includes two groups of rollers rotating in opposite directions, and one group of rollers is provided with three rollers, and the three rollers are provided with the same belt body, wherein the belt body between two of the rollers is a flattening section, and the other roller is provided with a gear, and the two groups of gears are meshed.
[0019] As a preferred embodiment of the above technical solution, a second mounting hole is provided on both the lower body and the upper body. The second mounting hole is located on a side opposite to the clamping block assembly, and the flattening piece is assembled inside the second mounting hole.
[0020] The beneficial effects of the present invention are:
[0021] The high-performance capacitor BOPP film stretching detection device in this technical solution fixes the film in the upper trough when both ends of the film are fixed on the clamp, and uses the lower trough in a negative pressure state to adsorb the film, so that the film remains in a straight state and contacts the lower clamping wall and the upper clamping wall, and then controls the block to move toward the film to contact and fix the film; the setting of keeping the film in a straight state ensures the tightness of the film in the initial state during the stretching operation, reducing the impact on the test accuracy.
[0022] The film is controlled to contact the lower clamping wall and the upper clamping wall, and then the block is controlled to move toward the film to fix the film, so as to avoid the block from contacting the film and displacing when fixing the film, thereby affecting the straight state of the film. BRIEF DESCRIPTION OF THE DRAWINGS
[0023] Figure 1 The figure shows a schematic diagram of the structure of the high-performance capacitor BOPP film stretching detection device in Example 1;
[0024] Figure 2 The figure shows the matching state of the lower clamp and the upper clamp in Example 1;
[0025] Figure 3 Shown is Figure 2 A magnified schematic diagram of the local structure;
[0026] Figure 4 Shown is a schematic structural diagram of the lower body in Example 1;
[0027] Figure 5 Shown is a schematic structural diagram of the upper body in Example 1;
[0028] Figure 6 Shown is a schematic top view of the flattened part in Example 1.
[0029] Reference numerals: lower clamp 10; lower body 11; lower clamping groove 12; lower clamping wall 13; lower groove body 14; air hole 15;
[0030] Upper clamp 20; upper body 21; upper clamping groove 22; upper clamping wall 23; upper groove body 24; positioning wall 25;
[0031] Clamping block assembly 30; block 31; threaded hole 32; screw 33; torsion bar 34; slider 35; slide 36; mounting hole 1 37;
[0032] Straightening member 40; air duct 41; fan 42;
[0033] Flattening member 50; roller 51; belt body 52; gear 53; mounting hole 2 54. DETAILED DESCRIPTION
[0034] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below in conjunction with the embodiments.
[0035] Example 1
[0036] like Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 、 Figure 5 As shown, the high-performance capacitor BOPP film tensile testing device includes a lower clamp 10 and an upper clamp 20. The upper clamp 20 and the lower clamp 10 in this embodiment are both assembled on the tensile testing machine body. The loading system on the tensile testing machine body drives the upper clamp 20 to perform linear motion in the up and down directions. The tensile testing machine body is a mature equipment in the existing technology and will not be described here.
[0037] The lower clamp 10 includes a lower body 11, a lower clamping groove 12 longitudinally distributed on the lower body 11, a lower groove body 14 distributed on the lower body 11 and penetrating the lower clamping groove 12, and a lower clamping wall 13 on one side of the lower clamping groove 12;
[0038] An upper fixture 20 is disposed vertically opposite to the lower fixture 10 and moves linearly in the vertical direction relative to the lower fixture 10. The upper fixture 20 includes an upper body 21, an upper clamping groove 22 longitudinally disposed on the upper body 21, and an upper groove body 24 disposed on the upper body 21 and extending through the upper clamping groove 22. One side of the upper clamping groove 22 is an upper clamping wall 23.
[0039] Two groups of clamping block assemblies 30, the two groups of clamping block assemblies 30 corresponding to the lower clamping wall 13 and the upper clamping wall 23 respectively, the clamping block assemblies 30 include blocks 31 that reciprocate in the horizontal direction, that is, the blocks 31 move in the direction of the lower clamping wall 13 and the upper clamping wall 23 or move away from the lower clamping wall 13 and the upper clamping wall 23;
[0040] The straightening member 40 includes an air duct 41 connected to the lower tank body 14 and a fan 42 assembled on the air duct 41. When the fan 42 is powered on, the air in the lower tank body 14 is discharged through the air duct 41, so that the lower tank body 14 is in a negative pressure state.
[0041] The high-performance capacitor BOPP film stretching detection device in the present technical solution needs to fix the film for stretching detection. When the film needs to be fixed, the two ends of the film are placed inside the upper trough body 24 and the lower trough body 14 respectively, and the middle part of the film passes through the upper clamping groove 22 and the lower clamping groove 12 to fix the film in the upper trough body 24. The lower trough body 14 in a negative pressure state adsorbs the film, and the film remains stretched and contacts the lower clamping wall 13 and the upper clamping wall 23. The block 31 is controlled to move toward the film to resist the film. Among them, in the lower clamp 10, the lower clamping wall 13 and the block 31 cooperate to clamp and fix the film. In the upper clamp 20, the upper clamping wall 23 and the block 31 cooperate to clamp and fix the film. The upper clamp 20 is controlled to move upward to stretch the film. The tensile testing machine body records the data generated during the stretching process, such as the magnitude of the tensile force borne by the film, the elongation and deformation of the film, etc.
[0042] In the present application, when the two ends of the film are fixed on the clamp, the film in the upper trough 24 is fixed, and the lower trough 14 in a negative pressure state is used to absorb the film, so that the film remains in a straight state and contacts the lower clamping wall 13 and the upper clamping wall 23, and then the control block 31 moves toward the film to resist and fix the film; the setting of keeping the film in a straight state ensures that the initial tightness of the film is guaranteed during the stretching operation, thereby reducing the impact on the test accuracy;
[0043] The film is controlled to contact the lower clamping wall 13 and the upper clamping wall 23, and then the block 31 is controlled to move toward the film to fix the film, so as to avoid the block 31 from contacting the film and displacing when fixing the film, thereby affecting the straight state of the film.
[0044] Further, such as Figure 2 、 Figure 5 As shown, the upper trough body 24 is provided with a positioning wall 25. When the film is clamped, the end of the film is brought into contact with the positioning wall 25 to limit the end of the film. At the same time, the setting of the end of the film contacting the positioning wall 25 corrects the position of the film to avoid the film being in a tilted state, and avoids affecting the test accuracy due to uneven force on the film when the film is subjected to tensile testing.
[0045] In order to solve the problem of the straightening member 40, the air duct 41 is connected to the lower tank 14 through the setting, such as Figure 2 、 Figure 3 、 Figure 4 As shown, the lower main body 11 is provided with an air hole 15 communicating with the lower tank body 14 and the outside of the lower main body 11 , and the air duct 41 is assembled inside the air hole 15 , and the air duct 41 is communicated with the lower tank body 14 .
[0046] Furthermore, the position of the clamping block assembly 30 in the device is reasonably arranged, such as Figure 2 、 Figure 3 、 Figure 4 、 Figure 5 As shown, a mounting hole 37 is provided on the lower main body 11 and the upper main body 21, and the block 31 is slidably assembled inside the mounting hole 37. In the lower clamp 10, one end of the block 31 is located in the lower clamping groove 12 and opposite to the lower clamping wall 13. In the upper clamp 20, one end of the block 31 is located in the upper clamping groove 22 and opposite to the upper clamping wall 23.
[0047] In order to realize the reciprocating movement of the block 31 in the horizontal direction, the clamping block assembly 30 also includes a screw 33, which is threadedly matched with the threaded hole 32 opened on the block 31, and a slide groove 36 is opened on the block 31, and a slider 35 is slidably matched in the slide groove 36, and the slider 35 is assembled with the mounting hole 37; under the restriction of the sliding fit between the slider 35 and the slide groove 36, the screw 33 is rotated to drive the block 31 to move in the horizontal direction. More specifically, when the screw 33 is rotated in the forward direction, the block 31 moves to the left (toward the film direction), and when the screw 33 is rotated in the reverse direction, the block 31 moves to the right (away from the film direction).
[0048] In order to improve the convenience of driving the block 31, Figure 2 、 Figure 3 As shown, one end of the screw rod 33 extends to the outside of the mounting hole 37 and is equipped with a torsion bar 34; when it is necessary to control the block 31 to move in the horizontal direction, the torsion bar 34 is twisted to drive the screw rod 33 to rotate, thereby improving the convenience of operation.
[0049] In this technical solution, the lower trough body 14 in a negative pressure state is used to adsorb the film, so that the film remains in a straight state, and the edges of the film are not restricted. During the negative pressure adsorption process, there is a possibility that one end of the film will gather. In this regard, this application is further optimized, as follows.
[0050] like Figure 2 、 Figure 3 、 Figure 4 、 Figure 5 、 Figure 6 As shown, the high-performance capacitor BOPP film stretching detection device also includes a flattening member 50, which includes two sets of rollers 51 with opposite rotation directions. A set of rollers 51 is provided with three rollers, and the three rollers 51 are provided with the same belt 52. The rollers 51 drive the belt 52 to rotate. The specific rotation direction is as follows Figure 6 As shown by the arrows in the figure, the belt body 52 between the two rollers 51 is a flattening section. When the belt body 52 rotates, the flattening section contacts the film and flattens the film from the middle to the edge, reducing the possibility of the film gathering and ensuring the test accuracy.
[0051] Because the film itself is relatively thin, the outer surface of the belt 52 is smooth. This not only allows the belt 52 to flatten the film, but also reduces friction between the belt 52 and the film, minimizing the possibility of film damage. Furthermore, to reduce the number of power sources required, gears 53 are provided on the other roller 51. The two sets of gears 53 mesh. With the gears 53 in mesh, a power source on one set of rollers 51 can drive the other set of rollers 51 to rotate synchronously.
[0052] In order to solve the problem of position distribution of the flattening member 50 in the present device, as shown in FIG. Figure 2 、 Figure 3 、 Figure 4 、 Figure 5 、 Figure 6 As shown, both the lower body 11 and the upper body 21 are provided with a second mounting hole 54. Specifically, a flattening member 50 is provided in both the lower clamp 10 and the upper clamp 20. The second mounting hole 54 is located on the side opposite the clamping block assembly 30. The flattening member 50 is assembled within the second mounting hole 54. More specifically, the roller 51 rotatably engages with the inner wall of the second mounting hole 54. The clamping block assembly 30 is located between the upper and lower flattening members 50, ensuring that the film is flattened during the tensile testing.
[0053] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same.
Claims
1. High-performance capacitor BOPP film stretching detection device, characterized by: include: A lower clamp (10), the lower clamp (10) comprising a lower main body (11), a lower clamping groove (12) longitudinally distributed on the lower main body (11), a lower groove body (14) distributed on the lower main body (11) and communicating with the lower clamping groove (12), one side of the lower clamping groove (12) being a lower clamping wall (13); An upper clamp (20) is arranged relative to the lower clamp (10) in the vertical direction and moves linearly relative to the lower clamp (10) in the vertical direction, the upper clamp (20) comprising an upper body (21), an upper clamping groove (22) longitudinally arranged on the upper body (21), and an upper groove body (24) arranged on the upper body (21) and communicating with the upper clamping groove (22), one side of the upper clamping groove (22) being an upper clamping wall (23); Two groups of clamping block assemblies (30), the two groups of clamping block assemblies (30) corresponding to the lower clamping wall (13) and the upper clamping wall (23) respectively, and the clamping block assemblies (30) including blocks (31) that reciprocate in the horizontal direction; A straightening member (40), the straightening member (40) comprising an air duct (41) connected to the lower tank (14) and a fan (42) mounted on the air duct (41), wherein the fan (42) operates to place the lower tank (14) in a negative pressure state; The two ends of the film are respectively placed inside the upper trough body (24) and the lower trough body (14), and the film in the upper trough body (24) is fixed. The lower trough body (14) in a negative pressure state adsorbs the film, and the film remains in a straight state and contacts the lower clamping wall (13) and the upper clamping wall (23). The control block (31) moves toward the film to resist and fix the film.
2. The high-performance capacitor BOPP film stretching detection device according to claim 1 is characterized in that: The upper clamp (20) and the lower clamp (10) are both assembled on the tensile testing machine body, and the loading system on the tensile testing machine body drives the upper clamp (20) to perform linear motion in the up and down directions.
3. The high-performance capacitor BOPP film stretching detection device according to claim 1, characterized in that: The upper tank body (24) is provided with a positioning wall (25), and the end of the film contacts the positioning wall (25).
4. The high-performance capacitor BOPP film stretching detection device according to claim 1, characterized in that: The lower main body (11) is provided with an air hole (15) communicating with the lower tank (14) and the outside of the lower main body (11), and the air duct (41) is assembled inside the air hole (15).
5. The high-performance capacitor BOPP film stretching detection device according to claim 1, characterized in that: The lower body (11) and the upper body (21) are both provided with a mounting hole (37), and the block (31) is slidably assembled inside the mounting hole (37); The clamping block assembly (30) further includes a screw (33), wherein the screw (33) is threadably matched with a threaded hole (32) provided on the block (31), a slide groove (36) is provided on the block (31), a slider (35) is slidably fitted in the slide groove (36), and the slider (35) is assembled with a mounting hole (37).
6. The high-performance capacitor BOPP film stretching detection device according to claim 5, characterized in that: One end of the screw rod (33) extends to the outside of the first mounting hole (37) and is equipped with a torsion rod (34).
7. The high-performance capacitor BOPP film stretching detection device according to claim 1, characterized in that: The invention also includes a flattening member (50), wherein the flattening member (50) includes two groups of rollers (51) rotating in opposite directions, wherein the number of the rollers (51) in one group is three, and the three rollers (51) are provided with a same belt body (52), wherein the belt body (52) between two of the rollers (51) is a flattening section, and a gear (53) is provided on the other roller (51), and the two groups of gears (53) are meshed.
8. The high-performance capacitor BOPP film stretching detection device according to claim 3, characterized in that: The lower body (11) and the upper body (21) are both provided with a second mounting hole (54), the second mounting hole (54) being located on a side opposite to the clamping block assembly (30), and the flattening member (50) being assembled inside the second mounting hole (54).