A film cutting apparatus

Abstract

The utility model discloses a kind of film cutting device, belong to NC film cutting device technical field, comprising: supporting mechanism, film pulling mechanism, film cutting mechanism and film feeding mechanism, the moving assembly includes two groups of first electric slide rail and two groups of first support plate, the moving assembly further includes screw rod, third motor and two groups of sliding block, the positioning assembly includes two groups of first electric push rod, two groups of lower pressing plate and two groups of adsorption pad. The transverse movement of two groups of first support plate can be controlled by first electric slide rail, realize film material preliminary positioning, two groups of sliding block can be driven by third motor synchronous and move towards or reverse, bilateral symmetry tensile force avoids single side stretching and leads to film deformation, lower pressing plate is vertically pressed by the first electric push rod of sliding block top, utilize adsorption pad to be able to fix film material edge, adsorption pad uses vacuum adsorption to replace traditional adhesive tape fixed, zero residue, no physical damage, avoid false positive caused by glue stain residue.

Description

Technical Field

[0001] This utility model specifically relates to a film cutting device, belonging to the field of NC film cutting technology. Background Technology

[0002] NC membrane is the core material of immunochromatographic test strips, such as colloidal gold test strips and fluorescent test strips. It is widely used in immunochromatography, molecular diagnostics and other fields. Its cutting quality directly affects the performance of the test strip. The NC membrane cutting device for reagent kits is a special device for accurately cutting NC membranes.

[0003] Currently, the general technique for cutting NC membranes in existing technologies is to lay the NC membrane flat on a cutting pad and fix the edges of the NC membrane with low-adhesion tape. Although this cutting method is simple to operate, the uneven tension applied when fixing with tape can cause localized stretching and deformation of some NC membranes, distortion of the membrane pore structure, inconsistent chromatography flow rates, and deviation of the actual width of the membrane strip after cutting from the design value. Utility Model Content

[0004] The purpose of this invention is to address the problem in the prior art where uneven tension applied during tape fixation when cutting NC membranes leads to localized stretching and deformation of some NC membranes, distortion of membrane pore structure, inconsistent chromatography flow rates, and deviation of the actual width of the cut membrane strip from the design value. This invention provides a membrane cutting device that achieves vacuum adsorption to replace traditional tape fixation, resulting in zero residue, no physical damage, and avoidance of false positives caused by adhesive residue.

[0005] A film cutting device includes: a support mechanism, a film pulling mechanism, a film cutting mechanism, and a film feeding mechanism;

[0006] The film stretching mechanism includes a moving component and a positioning component. The moving component includes two sets of No. 1 electric slide rails and two sets of No. 1 support plates. The two sets of No. 1 support plates are respectively disposed on the moving ends of the two sets of No. 1 electric slide rails.

[0007] The moving component also includes a lead screw, a No. 3 motor, and two sets of sliding blocks. The top of the two sets of No. 1 support plates is provided with a limit frame. The lead screw is located at the top of the limit frame. The lead screw has positive and negative threads on its outer side. The two sets of sliding blocks are respectively threaded onto the positive and negative threads on the outer side of the lead screw. The No. 3 motor is located at the top of the limit frame. One end of the lead screw is connected to the output end of the No. 3 motor.

[0008] The positioning assembly includes two sets of first electric push rods, two sets of lower pressure plates, and two sets of suction pads. The two sets of first electric push rods are respectively located at the top of the two sets of sliding blocks, the two sets of lower pressure plates are respectively located at the output ends of the two sets of first electric push rods, and the two sets of suction pads are respectively located on the lower surface of the two sets of lower pressure plates.

[0009] Furthermore, the support mechanism includes a film cutting table, a rubber pad is provided at the top of the film cutting table, and mounting grooves are provided on both sides of the top of the film cutting table relative to the rubber pad. The first electric slide rail is located inside the mounting groove, and a control box is provided on one side of the film cutting table.

[0010] Furthermore, the film feeding mechanism includes a support assembly and a clamping assembly. The support assembly includes a support frame, which is disposed on one side of the film cutting table. The clamping assembly includes a rotating rod and a first motor. The rotating rod is rotatably disposed inside the support frame, and a thread is provided on the outer side of the rotating rod. The first motor is disposed on the back of the support frame, and the output end of the first motor is connected to one end of the rotating rod.

[0011] Furthermore, the clamping assembly also includes a first clamping block and a second clamping block. The first clamping block is threaded through the outer side of the rotating rod. A second motor is provided on the back of the first clamping block. The shaft of the output end of the second motor passes through the front of the first clamping block. The second clamping block is movably sleeved on the outer side of the rotating rod. A bolt is threaded through the inner side of the second clamping block.

[0012] Furthermore, both the first clamping block and the second clamping block are movably sleeved on the rod inside the support frame.

[0013] Furthermore, both sets of mounting slots are equipped with a No. 3 electric slide rail inside, and the moving end of both sets of the No. 3 electric slide rails is equipped with a No. 2 support plate.

[0014] Furthermore, the film cutting mechanism includes a second electric slide rail, a second electric push rod, and a laser head. The top ends of the two sets of second support plates are connected to the bottom ends of the second electric slide rail. The moving end of the second electric slide rail is provided with a mounting plate. The second electric push rod is located at the top of the mounting plate. The laser head is detachably mounted on the output end of the second electric push rod.

[0015] Beneficial effects:

[0016] 1. By incorporating components such as adsorption pads, the lateral movement of two sets of support plates can be controlled by a No. 1 electric slide rail, achieving initial positioning of the membrane material. The positive and negative threads on the outer side of the lead screw are threaded through to the two sets of sliding blocks respectively. A No. 3 motor can drive the two sets of sliding blocks to move synchronously in opposite directions. The bidirectional symmetrical tension avoids membrane deformation caused by unilateral stretching. The No. 1 electric push rod at the top of the sliding block drives the lower pressure plate to press down vertically. The adsorption pads can fix the edges of the membrane material. The adsorption pads use vacuum adsorption instead of traditional tape fixation, resulting in zero residue and no physical damage, avoiding false positives caused by adhesive residue.

[0017] 2. By setting up components such as a first clamping block and a second clamping block, the rotating rod is threadedly connected to the first clamping block through a thread on the outside. The rotating rod is driven by a first motor to rotate, and the rotating rod can move the first clamping block to the second clamping block through the thread. By adjusting the positions of the first and second clamping blocks, the spacing between the clamping blocks can be adjusted to clamp film rolls of different widths. The second motor drives the active roller to rotate, realizing the controllable unwinding of the NC film and achieving the effect of preventing over-stretching. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0019] Figure 2 This is a schematic diagram of one side of the overall structure of this utility model;

[0020] Figure 3 This is a schematic diagram of the support frame structure of this utility model;

[0021] Figure 4 This is a schematic diagram of the limiting frame structure of this utility model;

[0022] Figure 5 This is a schematic diagram of the exploded structure of the sliding block and the lower pressure plate of this utility model;

[0023] Figure 6 In this utility model Figure 2 A magnified view of the local structure at point A.

[0024] In the diagram: 1. Cutting table; 2. Rubber pad; 3. Mounting slot; 4. Electric slide rail No. 1; 5. Control box; 6. Support frame; 7. Rotating rod; 8. Motor No. 1; 9. Clamping block No. 1; 10. Motor No. 2; 11. Clamping block No. 2; 12. Bolt; 13. Support plate No. 1; 14. Limit frame; 15. Lead screw; 16. Motor No. 3; 17. Sliding block; 18. Electric push rod No. 1; 19. Lower pressure plate; 20. Adsorption pad; 21. Support plate No. 2; 22. Electric slide rail No. 2; 23. Mounting plate; 24. Electric push rod No. 2; 25. Laser head; 26. Electric slide rail No. 3. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] Please see Figure 1 , Figure 2 , Figure 4and Figure 5 As shown, a film cutting device;

[0027] Includes: support mechanism, film stretching mechanism, film cutting mechanism, and film feeding mechanism;

[0028] The membrane stretching mechanism includes a moving component and a positioning component. The moving component includes two sets of No. 1 electric slide rails 4 and two sets of No. 1 support plates 13. The two sets of No. 1 support plates 13 are respectively set on the moving ends of the two sets of No. 1 electric slide rails 4.

[0029] The moving assembly also includes a lead screw 15, a third motor 16, and two sets of sliding blocks 17. The top of the two sets of first support plates 13 is provided with a limit frame 14. The lead screw 15 is located at the top of the limit frame 14. The lead screw 15 has positive and negative threads on its outer side. The two sets of sliding blocks 17 are respectively threaded onto the positive and negative threads on the outer side of the lead screw 15. The third motor 16 is located at the top of the limit frame 14. One end of the lead screw 15 is connected to the output end of the third motor 16.

[0030] The positioning assembly includes two sets of first electric push rods 18, two sets of lower pressure plates 19, and two sets of suction pads 20. The two sets of first electric push rods 18 are respectively located at the top of the two sets of sliding blocks 17, the two sets of lower pressure plates 19 are respectively located on the output ends of the two sets of first electric push rods 18, and the two sets of suction pads 20 are respectively located on the lower surface of the two sets of lower pressure plates 19.

[0031] Both sets of No. 1 support plates 13 are set on the moving ends of the two sets of No. 1 electric slide rails 4, and the two sets of No. 1 support plates 13 are used to provide support of a suitable height for the limiting frame 14. The lateral movement of the two sets of No. 1 support plates 13 can be controlled by the No. 1 electric slide rail 4 to achieve the initial positioning of the membrane material. The positive and negative threads on the outside of the lead screw 15 are threaded through to the two sets of sliding blocks 17 respectively. The No. 3 motor 16 can drive the two sets of sliding blocks 17 to move synchronously in opposite directions. The bidirectional symmetrical tension avoids membrane deformation caused by unilateral stretching. The No. 1 electric push rod 18 at the top of the sliding block 17 drives the lower pressure plate 19 to press down vertically. The edge of the membrane material can be fixed by the adsorption pad 20. The adsorption pad 20 uses vacuum adsorption to replace the traditional tape fixation, with zero residue and no physical damage, avoiding false positives caused by adhesive residue.

[0032] Please see Figure 1 and Figure 2 As shown, a film cutting device;

[0033] The support mechanism includes a cutting table 1, a rubber pad 2 is provided at the top of the cutting table 1, and mounting grooves 3 are provided on both sides of the top of the cutting table 1 relative to the rubber pad 2. A first electric slide rail 4 is provided inside the mounting groove 3, and a control box 5 is provided on one side of the cutting table 1.

[0034] The film cutting table 1 is the core working platform, providing the basic support surface for NC film cutting. The rubber pad 2 is used for buffering and shock absorption to prevent the film material from sliding or being damaged during cutting. The high coefficient of friction ensures the stability of film material spreading. The two sets of mounting slots 3 are each equipped with two sets of electric slide rails (electric slide rail 4 and electric slide rail 26). Electric slide rail 4 is used to provide a precise moving track for the film stretching mechanism. The control box 5 is electrically connected to the electrical components inside the film cutting device. The control box 5 can be used to regulate the operation of the electrical components inside the film cutting device.

[0035] Please see Figure 1 , Figure 2 and Figure 3 As shown, a film cutting device;

[0036] The film feeding mechanism includes a support assembly and a clamping assembly. The support assembly includes a support frame 6, which is located on one side of the film cutting table 1. The clamping assembly includes a rotating rod 7 and a primary motor 8. The rotating rod 7 is rotatably mounted inside the support frame 6, and a thread is provided on its outer side. The primary motor 8 is located on the back of the support frame 6, and its output end is connected to one end of the rotating rod 7. The clamping assembly also includes a primary clamping block 9 and a secondary clamping block 11. The primary clamping block 9 is threaded through the outer side of the rotating rod 7. A secondary motor 10 is located on the back of the primary clamping block 9, and the shaft of the output end of the secondary motor 10 passes through the front of the primary clamping block 9. The secondary clamping block 11 is movably sleeved on the outer side of the rotating rod 7, and a bolt 12 is threaded through its internal part. Both the primary clamping block 9 and the secondary clamping block 11 are movably sleeved on the rod inside the support frame 6.

[0037] The support frame 6 is used to carry the film roll and guide the unwinding path. It is threadedly connected to the first clamping block 9 through the thread on the outside of the rotating rod 7. The rotating rod 7 is driven to rotate by the first motor 8. The rotating rod 7 can drive the first clamping block 9 to move to the second clamping block 11 through the thread. By adjusting the position of the first clamping block 9 and the second clamping block 11, the spacing between the clamping blocks can be adjusted to clamp film rolls of different widths. The active roller is driven to rotate by the second motor 10 to achieve controllable unwinding (preventing overstretching).

[0038] Please see Figure 1 , Figure 2 and Figure 6 As shown, a film cutting device;

[0039] Both sets of mounting slots 3 are equipped with a No. 3 electric slide rail 26 inside. The moving end of both sets of No. 3 electric slide rails 26 is equipped with a No. 2 support plate 21. The film cutting mechanism includes a No. 2 electric slide rail 22, a No. 2 electric push rod 24 and a laser head 25. The top of the two sets of No. 2 support plates 21 is connected to the bottom of the No. 2 electric slide rail 22. The moving end of the No. 2 electric slide rail 22 is equipped with a mounting plate 23. The No. 2 electric push rod 24 is located at the top of the mounting plate 23. The laser head 25 is detachably mounted on the output end of the No. 2 electric push rod 24.

[0040] The cutting assembly can be driven to move along the XY axis of the membrane by the cooperation of the No. 2 electric slide rail 22 and the No. 3 electric slide rail 26. The laser head 25 can be adjusted in height by the No. 2 electric push rod 24. The laser head 25 adopts non-contact cutting (CO2 / ultraviolet laser optional). The laser head 25 can cut the membrane material according to the preset path.

[0041] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0042] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A film cutting device, characterized in that, include: Support mechanism, film stretching mechanism, film cutting mechanism, and film feeding mechanism; The membrane stretching mechanism includes a moving component and a positioning component. The moving component includes two sets of No. 1 electric slide rails (4) and two sets of No. 1 support plates (13). The two sets of No. 1 support plates (13) are respectively set on the moving ends of the two sets of No. 1 electric slide rails (4). The moving assembly also includes a lead screw (15), a third motor (16), and two sets of sliding blocks (17). The top of the two sets of first support plates (13) is provided with a limit frame (14). The lead screw (15) is located at the top of the limit frame (14). The lead screw (15) has positive and negative threads on its outer side. The two sets of sliding blocks (17) are respectively threaded onto the positive and negative threads on the outer side of the lead screw (15). The third motor (16) is located at the top of the limit frame (14). One end of the lead screw (15) is connected to the output end of the third motor (16). The positioning assembly includes two sets of first electric push rods (18), two sets of lower pressure plates (19), and two sets of suction pads (20). The two sets of first electric push rods (18) are respectively set on the top of the two sets of sliding blocks (17), the two sets of lower pressure plates (19) are respectively set on the output end of the two sets of first electric push rods (18), and the two sets of suction pads (20) are respectively set on the lower surface of the two sets of lower pressure plates (19).

2. The film cutting device as described in claim 1, characterized in that: The support mechanism includes a film cutting table (1), a rubber pad (2) is provided at the top of the film cutting table (1), and mounting grooves (3) are provided on both sides of the top of the film cutting table (1) relative to the rubber pad (2). The first electric slide rail (4) is located inside the mounting groove (3), and a control box (5) is provided on one side of the film cutting table (1).

3. The film cutting device as described in claim 1, characterized in that: The film feeding mechanism includes a support assembly and a clamping assembly. The support assembly includes a support frame (6) which is located on one side of the film cutting table (1). The clamping assembly includes a rotating rod (7) and a first motor (8). The rotating rod (7) is rotatably located inside the support frame (6). A thread is provided on the outer side of the rotating rod (7). The first motor (8) is located on the back of the support frame (6). The output end of the first motor (8) is connected to one end of the rotating rod (7).

4. The film cutting device as described in claim 3, characterized in that: The clamping assembly also includes a first clamping block (9) and a second clamping block (11). The first clamping block (9) is threaded through and disposed on the outside of the rotating rod (7). A second motor (10) is disposed on the back of the first clamping block (9). The shaft of the output end of the second motor (10) passes through the front of the first clamping block (9). The second clamping block (11) is movably disposed on the outside of the rotating rod (7). A bolt (12) is threaded through the inside of the second clamping block (11).

5. The film cutting device as described in claim 4, characterized in that: Both the No. 1 clamping block (9) and the No. 2 clamping block (11) are movably sleeved on the rod inside the support frame (6).

6. The film cutting device as described in claim 2, characterized in that: Both sets of mounting slots (3) are equipped with a No. 3 electric slide rail (26), and the moving end of both sets of No. 3 electric slide rails (26) is equipped with a No. 2 support plate (21).

7. The film cutting device as described in claim 6, characterized in that: The film cutting mechanism includes a second electric slide rail (22), a second electric push rod (24), and a laser head (25). The top ends of the two sets of second support plates (21) are connected to the bottom end of the second electric slide rail (22). The moving end of the second electric slide rail (22) is provided with a mounting plate (23). The second electric push rod (24) is set at the top of the mounting plate (23). The laser head (25) is detachably set on the output end of the second electric push rod (24).

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