A breathable film winding and slitting device

Abstract

The application provides a breathable film winding and slitting device, and relates to the technical field of breathable films, which comprises a support frame, a winding mechanism and a first slitting mechanism. A leading-in roller is arranged at the right end of the support frame. A slitting guide roller is arranged below the left side of the leading-in roller. An upper leading-out roller and a lower leading-out roller are rotatably arranged at the left end of the support frame. The winding mechanism comprises an upper turntable and a lower turntable, which are rotatably arranged on the support frame through rotating shafts. The first slitting mechanism comprises a cross beam arranged above the slitting guide roller. A plurality of first slitting blades are arranged on the cross beam along the length direction of the cross beam. The second slitting mechanism comprises an upper tension roller and a lower tension roller rotatably connected to the support frame. The upper tension roller and the lower tension roller are both slidably provided with second slitting blades. The application solves the problem of single cutting direction of the slitting machine and the problem of inability to automatically change the roll in the prior art.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of breathable film, in particular to a breathable film winding and slitting device. BACKGROUND

[0002] The slitting machine is a kind of mechanical equipment for cutting wide paper and film into multiple narrow materials, and is mainly used for cutting non-woven fabric, mica tape, paper, insulating material and various film materials, and is particularly suitable for cutting narrow tapes. With the continuous development of science and technology, people's requirements for the manufacturing process of the slitting machine are also getting higher and higher.

[0003] The existing slitting machine is generally provided with multiple slitting knives along the roller shaft direction, such as the patent document CN208544919U discloses a winding film equipment with a slitting device, which comprises a machine table, a slitting device and a film guide roller and a film winding mechanism for winding the cut film, the film guide roller is located between the slitting device and the film winding mechanism, the slitting device comprises a bottom plate 101 slidingly arranged on the machine table and a slitting die arranged on the bottom plate 101 and used for fixing the slitting knife, the bottom plate 101 is provided with a receiving hole, the receiving hole penetrates through the bottom plate 101, the slitting die is slidingly arranged in the receiving hole, both ends of the slitting die protrude out of the bottom plate 101, and the slitting end of the slitting die is provided with a mounting portion, the mounting portion is provided with a first mounting hole for mounting the slitting knife.

[0004] The above-mentioned slitting device has the advantages of simple structure, convenient disassembly and maintenance of the slitting die and the bottom plate 101, convenient installation of the slitting knife, positioning of the slitting die by the bottom plate 101, guarantee of the stability of the slitting die, improvement of the quality and efficiency of the film slitting, but still has the following problems: on the one hand, the cutting direction is single, since the slitting knives are arranged along the direction of the film guide roller, they can only cut along the length direction of the film, and cannot cut along the width direction of the film, so that the wound film cannot be automatically separated, and manual cutting and separation are required; on the other hand, the whole winding process needs to be paused after a roll of material is wound, and the operator can take down the wound film before winding again, which increases the downtime in actual production and limits the production capacity of the film slitting and winding. SUMMARY

[0005] In view of the deficiencies in the prior art, the present application provides a breathable film winding and slitting device, which solves the problems of single cutting direction and inability to automatically change the roll of the slitting machine in the prior art.

[0006] According to an embodiment of the present application, a breathable film winding and slitting device comprises:

[0007] The right end of the support frame is provided with an import roller, the lower left of the import roller is provided with a slitting guide roller, the left end of the support frame is rotatably provided with an upper export roller and a lower export roller;

[0008] The winding mechanism comprises an upper turntable, a lower turntable, a first driving mechanism and a second driving mechanism, the upper turntable and the lower turntable are rotatably installed on the support frame through a rotating shaft and are both provided with a plurality of winding rollers in array, the first driving mechanism is used for driving the two to rotate, and the second driving mechanism is used for driving two winding rollers respectively located on the two to rotate;

[0009] The first slitting mechanism comprises a cross beam provided above the slitting guide roller, a plurality of first slitting blades are provided on the cross beam in array along the length direction of the cross beam;

[0010] The second slitting mechanism comprises an upper tension roller, a lower tension roller and a fourth driving mechanism, the upper tension roller and the lower tension roller are driven to be in close contact with the winding rollers respectively and are both axially slidably provided with second slitting blades, and each second slitting blade is connected with a third driving mechanism used for driving the second slitting blade to slide.

[0011] The technical principle of the present application is as follows:

[0012] The air permeable film is cut into a narrow strip by a plurality of first slitting blades after being guided by the import roller, a part of the air permeable film after being cut is wound on one winding roller of the upper turntable after being tensioned by the slitting guide roller and passing through the upper export roller, and another part is wound on one winding roller of the lower turntable after being tensioned by the slitting guide roller and passing through the lower export roller; the winding rollers on which the air permeable film is wound in the upper turntable and the lower turntable are driven to rotate by the second driving mechanism for winding; after winding is completed, the upper turntable and the lower turntable are driven to rotate by the first driving mechanism to replace the next winding roller to the position to be wound, the upper tension roller and the lower tension roller are driven to be in close contact with the winding rollers on the upper turntable and the lower turntable respectively by the fourth driving mechanism, and the second slitting blades are driven to slide by the third driving mechanism, so as to separate the wound air permeable film from the air permeable film to be wound.

[0013] Compared with the prior art, the present application has the following beneficial effects:

[0014] The breathable film is cut into several narrow strips by setting several first cutting blades, the second cutting blade is driven to slide along the axial direction of the tensioning roller by the third driving mechanism, the wound breathable film is separated from the breathable film to be wound, manual operation is reduced, and efficiency is improved; the upper tensioning roller is tightly attached to the winding roller of the upper rotating disc, the lower tensioning roller is tightly attached to the winding roller of the lower rotating disc, and then cutting is performed, so that the breathable film is in a stable tensioning state when the wound breathable film is separated from the breathable film to be wound, and the cutting surface is stable; the upper rotating disc and the lower rotating disc are driven to rotate by the first driving mechanism, the winding roller is replaced, and automatic winding change is realized in cooperation with the second cutting mechanism.

[0015] Preferably, the second cutting mechanism further comprises a first cylinder, an upper rotating rod and a lower rotating rod, one end of the upper rotating rod and the lower rotating rod is fixedly connected with the upper tensioning roller and the tensioning roller respectively, the other end is hingedly connected with an upper connecting rod and a lower connecting rod respectively, the middle part of the upper rotating rod and the lower rotating rod is rotatably connected with the support frame respectively, and the free end of the upper connecting rod and the lower connecting rod is hingedly connected with the moving end of the first cylinder.

[0016] Preferably, the upper tensioning roller and the lower tensioning roller both have cavities, the third driving mechanism comprises a lead screw arranged in the cavity, a moving part is arranged on the lead screw, the second cutting blade is fixedly connected with the moving part, and first sliding grooves are arranged in the axial direction of the second cutting blade and the moving part, and a rotary motor for driving the lead screw to rotate is arranged on the upper tensioning roller and the lower tensioning roller.

[0017] Preferably, a second sliding groove is arranged in the cross beam, a plurality of sliding blocks for mounting the first cutting blades are slidably arranged in the second sliding groove, the sliding blocks and the second sliding groove are in clearance fit, and a locking device for limiting the sliding of the sliding blocks is arranged on the cross beam.

[0018] Preferably, the second sliding groove is in the shape of a Chinese character 'N', the locking device comprises a pressing piece arranged between the sliding block and the second sliding groove in the length direction of the second sliding groove, and a screw rod threadedly connected at both ends of the cross beam, and the end of the screw rod abuts against the side of the pressing piece away from the sliding block.

[0019] Preferably, a rubber pad is arranged on the side of the pressing piece close to the sliding block.

[0020] Preferably, an adjusting structure for adjusting the height of the cross beam is arranged on the support frame.

[0021] Preferably, the first driving mechanism comprises teeth arranged on the circumferential side of the upper rotating disc and the lower rotating disc and meshing with each other, a first motor is arranged on the support frame, and the rotating shaft of the first motor is key connected with the upper rotating disc or the lower rotating disc.

[0022] Preferably, the second driving mechanism comprises a second cylinder and a moving plate, an upper gear and a lower gear are rotatably arranged on the moving plate, positions of the upper gear and the lower gear correspond to the winding rollers at right ends of the upper rotary disc and the lower rotary disc respectively, the upper gear and the lower gear are connected with a main driving part for driving the upper gear and the lower gear to rotate in opposite directions, an end of each winding roller is fixedly connected with a sub gear, and a moving end of the second cylinder is fixedly connected with the moving plate for driving the moving plate to move axially along each sub gear, so that the upper gear and the lower gear have a first working state of meshing with the sub gear and a second working state of disengaging from the sub gear respectively.

[0023] Preferably, the main driving part comprises a second motor and an upper tensioning roller and a lower tensioning roller fixedly connected with the upper gear and the lower gear respectively, two sub tensioning rollers are further rotatably connected on the moving plate, the upper tensioning roller, the lower tensioning roller and the two sub tensioning rollers are driven by a belt, the upper tensioning roller and the two sub tensioning rollers are located on an inner side of the belt, the lower tensioning roller is located on an outer side of the belt, and the second motor is installed on the moving plate and is in key connection with one of the tensioning rollers. BRIEF DESCRIPTION OF DRAWINGS

[0024] Figure 1 Working schematic of the embodiment Figure 1 .

[0025] Figure 2 Working schematic of the embodiment Figure 2 .

[0026] Figure 3 is Figure 1 is an enlarged view of B in FIG.

[0027] Figure 4 Structure schematic of the embodiment Figure 1 .

[0028] Figure 5 Structure schematic of the embodiment Figure 2 .

[0029] Figure 6 is an internal structure schematic of the upper tensioning roller and the lower tensioning roller.

[0030] In the above drawings: 101, base plate; 102, support plate; 103, fixed plate; 104, leading-in roller; 105, slitting guide roller; 106, upper leading-out roller; 107, lower leading-out roller;

[0031] 201, upper rotating disc; 202, lower rotating disc; 203, winding roller; 204, winding drum; 205, first motor; 206, second cylinder; 207, moving plate; 208, upper gear; 209, lower gear; 210, sub gear; 211, upper tension pulley; 212, lower tension pulley; 213, sub tension pulley; 214, belt; 215, second motor

[0032] 301, crossbeam; 302, first slitting blade; 303, second sliding groove; 304, sliding block; 305, pressing piece; 306, screw rod; 307, adjusting plate; 308, threaded hole;

[0033] 401, upper tension roller; 402, lower tension roller; 403, second slitting blade; 404, first cylinder; 405, upper rotating rod; 406, lower rotating rod; 407, upper connecting rod; 408, lower connecting rod; 409, screw rod; 410, moving part; 411, rotary motor; 412, first sliding groove; 413, guiding part. DETAILED DESCRIPTION

[0034] The technical solutions in the present application will be further described below in combination with the drawings and embodiments.

[0035] As Figure 1 shown in the drawings, the present application provides a breathable film winding and slitting device, which comprises a support frame, a winding mechanism, a first slitting mechanism and a second slitting mechanism, wherein,

[0036] The support frame comprises a bottom plate 101, two support plates 102 oppositely arranged at the right end of the bottom plate 101 and a fixed plate 103 arranged at the left end of the bottom plate 101, a slitting guide roller 105 is rotatably arranged at the lower left of the guide-in roller 104 between the two support plates 102, and an upper guide-out roller 106 and a lower guide-out roller 107 are rotatably arranged at the left end of the support plate 102.

[0037] As Figure 5 shown in the drawings, the winding mechanism comprises an upper rotating disc 201, a lower rotating disc 202, a first driving mechanism and a second driving mechanism, the upper rotating disc 201 and the lower rotating disc 202 are rotatably installed on the fixed plate 103 and located at the left end of the guide-out roller, and four winding rollers 203 are arrayed on the upper rotating disc 201 and the lower rotating disc 202, a winding drum 204 is detachably connected to each winding roller 203, and the specific detachable connection mode can be clamping, bolt connection, etc., which can facilitate the dismounting and fixing of the winding drum 204.

[0038] The first driving mechanism is used for driving the upper rotating disc 201 and the lower rotating disc 202 to rotate, which comprises the tooth gears arranged on the circumferential sides of the upper rotating disc 201 and the lower rotating disc 202 and engaged with each other. The fixed plate 103 is provided with a first motor 205, and the output end of the first motor 205 is keyed connected with the rotating shaft of the lower rotating disc 202.

[0039] As shown in Figure 1 and Figure 5 The second driving mechanism is used for driving the winding roller 203 to rotate, which comprises a second cylinder 206 and a moving plate 207. The moving plate 207 is rotatably provided with an upper gear 208 and a lower gear 209. The positions of the upper gear 208 and the lower gear 209 correspond to the winding roller 203 at the right end of the upper rotating disc 201 and the lower rotating disc 202 respectively. The upper gear 208 and the lower gear 209 are connected with a main driving part for driving the two gears to rotate in opposite directions. The end of each winding roller 203 is fixedly connected with a sub gear 210. The second cylinder 206 is installed on the bottom plate 101, and its moving end is fixedly connected with the moving plate 207 for driving the moving plate 207 to move axially along each sub gear 210, so that the upper gear 208 and the lower gear 209 have a first working state of engaging with the sub gear 210 at the rightmost end of the upper rotating disc 201 and the lower rotating disc 202 and a second working state of disengaging with the sub gear 210.

[0040] The main driving part comprises a second motor 215 and an upper tension pulley 211 and a lower tension pulley 212 fixedly connected with the upper gear 208 and the lower gear 209 respectively. The moving plate 207 is further rotatably connected with two sub tension pulleys 213. The upper tension pulley 211, the lower tension pulley 212 and the two sub tension pulleys 213 are driven by a belt 214. The upper tension pulley 211 and the two sub tension pulleys 213 are located on the inner side of the belt 214, and the lower tension pulley 212 is located on the outer side of the belt 214. The second motor 215 is installed on the moving plate 207, and its output end is keyed connected with any one of the tension pulleys to drive the belt 214 to rotate reversely, so that the upper tension pulley 211 and the lower tension pulley 212 rotate in opposite directions.

[0041] As shown in Figure 5 The first slitting mechanism comprises a cross beam 301 arranged above the slitting guide roller 105. The cross beam 301 is provided with a plurality of first slitting blades 302 arranged at intervals along the length direction thereof.

[0042] As shown in Figure 1 and Figure 4The second slitting mechanism includes a fourth driving mechanism, and an upper tension roller 401 and a lower tension roller 402 rotatably connected to the support frame. The upper tension roller 401 and the lower tension roller 402 are both slidably provided with a second slitting blade 403. Each second slitting blade 403 is connected with a third driving mechanism for driving the sliding of the second slitting blade 403. The upper tension roller 401 and the lower tension roller 402 can be driven to rotate to tightly contact with the winding roller 203 on the upper turntable 201 and the lower turntable 202, respectively, by the fourth driving mechanism.

[0043] Specifically, the fourth driving mechanism includes a first cylinder 404, an upper rotating rod 405 and a lower rotating rod 406. One end of the upper rotating rod 405 and the lower rotating rod 406 is fixedly connected with the upper tension roller 401 and the lower tension roller 402, respectively. The other end of the upper rotating rod 405 and the lower rotating rod 406 is hingedly connected with an upper connecting rod 407 and a lower connecting rod 408, respectively. The left edge of the two support plates 102 is provided with a mounting seat. The middle part of the upper rotating rod 405 and the lower rotating rod 406 is rotatably connected with the mounting seat at the edge of the two support plates 102. The free end of the upper connecting rod 407 and the lower connecting rod 408 is hingedly connected with the moving end of the first cylinder 404.

[0044] As shown in Figure 6 The upper tension roller 401 and the lower tension roller 402 are both provided with a cavity. The third driving mechanism includes a lead screw 409 rotatably arranged in the cavity. The lead screw 409 is provided with a moving part 410. The second slitting blade 403 is fixedly connected with the moving part 410. The second slitting blade 403 and the moving part 410 are both provided with a first sliding groove 412 along the axial direction. The upper tension roller 401 and the lower tension roller 402 are both provided with a rotary motor 411. The output end of the rotary motor 411 is key-connected with the lead screw 409. Further, in order to ensure the stability of the sliding of the second slitting blade 403, the upper tension roller 401 and the lower tension roller 402 are both fixedly connected with a guide part 413 along the axial direction. The guide part 413 is provided with a third sliding groove. The moving part 410 is slidably arranged in the third sliding groove.

[0045] It should be noted that the initial position of the second slitting blade 403 is located at the end of the upper tension roller 401 and the lower tension roller 402, and maintains a gap with the edge of the breathable film, so as to prevent the second slitting blade 403 from scratching the breathable film when the upper tension roller 401 or the lower tension roller 402 rotates to tightly contact with the winding roller 203 at the rightmost end of the upper turntable 201 or the lower turntable 202, respectively.

[0046] The detailed working process of the embodiment is as follows:

[0047] As shown in Figure 1As shown, the breathable membrane passes through the upper surface of the guide roller 104 and is then cut into narrow strips by the first slitting mechanism. A portion of the cut breathable membrane is tensioned by the lower surface of the slitting guide roller 105 and then passes through the upper surface of the upper guide roller 106, where it is wound onto the rightmost take-up roller 203 of the upper turntable 201 for winding. Another portion is tensioned by the lower surface of the slitting guide roller 105 and then passes through the lower surface of the lower guide roller 107, where it is wound onto the rightmost take-up roller 203 of the lower turntable 202 for winding. Figure 1 In the clockwise direction (A), during winding, the second cylinder 206 pushes the moving plate 207 to slide along the axis of the auxiliary gear 210 to the first position, where the upper gear 208 meshes with the rightmost auxiliary gear 210 on the upper turntable 201, and the lower gear 209 meshes with the rightmost auxiliary gear 210 on the lower turntable 202. The second motor 215 drives the belt 214 to rotate, causing the upper tensioning wheel 211 to drive the upper gear 208 to rotate clockwise, while the lower tensioning wheel 212 drives the lower gear to rotate counterclockwise, thus winding up the slit air-permeable mold. Figure 2 As shown, after winding is completed, the second cylinder 206 pushes the slide to the second position, and the upper gear 208 and lower gear 209 disengage from the upper turntable 201 and the right-hand auxiliary gear 210 of the lower turntable 202, respectively. Then, the first motor 205 drives the lower turntable 202 to rotate clockwise, causing the winding roller 203 at the bottom of the lower turntable 202 to rotate to the right-hand winding position. At the same time, it drives the upper turntable 201 to rotate counterclockwise, causing the winding roller 203 at the top of the upper turntable 201 to rotate. Rotate to the right-end winding position, and then drive the upper tension roller 401 and lower tension roller 402 to rotate to fit with the winding roller 203 at the right end of the upper turntable 201 and lower turntable 202 respectively through the first cylinder 404. Then start the rotary motor 411 on the upper tension roller 401 and lower tension roller 402 to drive the lead screw 409 to rotate, thereby driving the second slitting blade 403 to slide, separating the wound breathable film from the breathable film to be wound, and then the next winding roller 203 can be wound.

[0048] like Figure 3 and Figure 5 As shown, according to another embodiment of the present invention, in order to facilitate the adjustment of the width of the breathable membrane slitting, a second slide groove 303 is provided in the crossbeam 301. A plurality of sliders 304 for mounting the first sliding blade 302 are slidably arranged in the second slide groove 303. The sliders 304 are clearance-fitted with the second slide groove 303. A locking device for restricting the sliding of each slider 304 is provided on the crossbeam 301.

[0049] Specifically, the second slide groove 303 is convex in shape. The locking device includes a pressure plate 305 disposed between the slider 304 and the second slide groove 303 along the length direction of the second slide groove 303, and two screws 306 threadedly connected to both ends of the crossbeam 301. The ends of the screws 306 abut against the side of the pressure plate 305 away from the slider 304. By screwing the screws 306 inward, the pressure plate 305 presses each slider 304 into the second slide groove 303, thereby achieving synchronous locking of each slider 304. By unscrewing the screws 306, each slider 304 can slide along the second slide groove 303, thereby adjusting the spacing of each first slitting blade 302.

[0050] Furthermore, in order to increase the friction between the pressure plate 305 and the slider 304, a rubber pad is provided on the side of the pressure plate 305 near each slider 304.

[0051] like Figure 5 As shown, according to another embodiment of the present invention, in order to facilitate the cutting of breathable membranes of different thicknesses, the support frame is provided with an adjustment structure for adjusting the height of the crossbeam 301. Specifically, an adjustment plate 307 is fixedly connected to each of the two support plates 102. The adjustment plate 307 is provided with a plurality of threaded holes 308 along the vertical direction. The two ends of the crossbeam 301 are provided with through holes. The two ends of the crossbeam 301 are fixedly connected to the threaded holes 308 on the adjustment plate 307 by bolts passing through the through holes.

[0052] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. A breathable film winding and slitting apparatus characterized by, The application relates to a slitting and winding device. The device comprises a support frame, a leading-in roller (104) arranged at the right end of the support frame, a slitting guide roller (105) arranged below the leading-in roller (104), an upper leading-out roller (106) and a lower leading-out roller (107) rotatably arranged at the left end of the support frame. The device further comprises a winding mechanism, which comprises an upper rotating disc (201), a lower rotating disc (202), a first driving mechanism and a second driving mechanism, wherein the upper rotating disc (201) and the lower rotating disc (202) are rotatably arranged on the support frame through rotating shafts and are both provided with a plurality of winding rollers (203) arranged in an array, the first driving mechanism is used for driving the two rotating discs to rotate, and the second driving mechanism is used for driving two winding rollers (203) arranged on the two rotating discs respectively to rotate. The device further comprises a first slitting mechanism, which comprises a crossbeam (301) arranged above the slitting guide roller (105), and a plurality of first slitting blades (302) are arranged on the crossbeam (301) in a length direction of the crossbeam (301) at intervals. The device further comprises a second slitting mechanism, which comprises an upper tension roller (401), a lower tension roller (402) and a fourth driving mechanism, wherein the upper tension roller (401) and the lower tension roller (402) are driven by the fourth driving mechanism to be in close contact with the winding rollers (203) respectively and are both slidably arranged in an axial direction and are both provided with second slitting blades (403), and each second slitting blade (403) is connected with a third driving mechanism used for driving the second slitting blade (403) to slide.

2. A breathable film winding and slitting apparatus as defined in claim 1, wherein, The fourth driving mechanism comprises a first cylinder (404), an upper rotating rod (405) and a lower rotating rod (406), one end of the upper rotating rod (405) and one end of the lower rotating rod (406) are fixedly connected with the upper tension roller (401) and the lower tension roller (402) respectively, the other end of the upper rotating rod (405) and the other end of the lower rotating rod (406) are hingedly connected with an upper connecting rod (407) and a lower connecting rod (408) respectively, the middle part of the upper rotating rod (405) and the middle part of the lower rotating rod (406) are rotatably connected with the support frame respectively, and the free end of the upper connecting rod (407) and the free end of the lower connecting rod (408) are hingedly connected with the moving end of the first cylinder (404).

3. A breathable film winding and slitting apparatus as defined in claim 2, wherein, The upper tension roller (401) and the lower tension roller (402) are both provided with cavities and are both provided with first sliding grooves (412) in the axial direction, each third driving mechanism comprises a lead screw (409) arranged in the cavity, the lead screw (409) is provided with a moving part (410), the second slitting blade (403) is fixedly connected with the moving part (410), and the upper tension roller (401) and the lower tension roller (402) are both provided with rotary motors (411) used for driving the lead screw (409) to rotate.

4. A breathable film winding and slitting apparatus as defined in claim 1, wherein, The crossbeam (301) is provided with second sliding grooves (303), a plurality of sliding blocks (304) used for mounting the first slitting blades (302) are slidably arranged in the second sliding grooves (303), the sliding blocks (304) are in clearance fit with the second sliding grooves (303), and the crossbeam (301) is provided with lockers used for limiting the sliding of the sliding blocks (304).

5. A breathable film winding and slitting apparatus as defined in claim 4, wherein, The second chute (303) is in the shape of a convex letter, the locker comprises a pressing plate (305) arranged between the slider (304) and the second chute (303) along the length direction of the second chute (303), and a screw rod (306) threadedly connected at both ends of the cross beam (301), the end of the screw rod (306) abuts against the side of the pressing plate (305) away from the slider (304).

6. A breathable film winding and slitting apparatus as defined in claim 5, wherein, The pressing plate (305) is provided with a rubber pad on the side close to each slider (304).

7. A breathable film winding and slitting apparatus as defined in claim 5, wherein, The support frame is provided with an adjusting structure for adjusting the height of the cross beam (301).

8. A breathable film winding and slitting apparatus as defined in claim 1, wherein, The first driving mechanism comprises tooth gears arranged on the periphery of the upper turntable (201) and the lower turntable (202) and engaged with each other, and the support frame is provided with a first motor (205), and the first motor (205) is key-connected with the rotating shaft of the upper turntable (201) or the lower turntable (202).

9. A breathable film winding and slitting apparatus as defined in claim 1, wherein, The second driving mechanism comprises a second air cylinder (206) and a moving plate (207), the moving plate (207) is rotatably provided with an upper gear (208) and a lower gear (209), the positions of the upper gear (208) and the lower gear (209) correspond to the winding rollers (203) at the right ends of the upper turntable (201) and the lower turntable (202) respectively, the upper gear (208) and the lower gear (209) are connected with a main driving part for driving the two gears to rotate in opposite directions, the end of each winding roller (203) is fixedly connected with a sub gear (210), and the moving end of the second air cylinder (206) is fixedly connected with the moving plate (207) for driving the moving plate (207) to move axially along each sub gear (210), so that the upper gear (208) and the lower gear (209) have a first working state of engaging with the sub gear (210) and a second working state of disengaging with the sub gear (210) respectively.

10. A breathable film winding and slitting apparatus as defined in claim 9, wherein, The main driving part comprises a second motor (215) and an upper tension pulley (211) and a lower tension pulley (212) fixedly connected with the upper gear (208) and the lower gear (209) respectively, the moving plate (207) is further rotatably connected with two sub tension pulleys (213), the upper tension pulley (211), the lower tension pulley (212) and the two sub tension pulleys (213) are driven by a belt (214), the upper tension pulley (211) and the two sub tension pulleys (213) are located on the inner side of the belt (214), the lower tension pulley (212) is located on the outer side of the belt (214), and the second motor (215) is installed on the moving plate (207), and the output end of the second motor (215) is key-connected with one of the tension pulleys.

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