CN107696531B

CN107696531B - Shielding film processing system for preventing adhesive tape from being torn

Info

Publication number: CN107696531B
Application number: CN201711164353.5A
Authority: CN
Inventors: 谢周明
Original assignee: CHONGQING XIESHI ADHESIVE PRODUCTS Co Ltd
Current assignee: CHONGQING XIESHI ADHESIVE PRODUCTS Co Ltd
Priority date: 2017-11-20
Filing date: 2017-11-20
Publication date: 2020-03-17
Anticipated expiration: 2037-11-20
Also published as: CN107696531A

Abstract

The invention discloses a shielding film processing system for preventing an adhesive tape from being torn off, and relates to the technical field of shielding film processing. The invention discloses a shielding film processing system for preventing an adhesive tape from being torn off, which comprises a rack and an adhesive tape roll mounting mechanism arranged on the rack; the adhesive tape roll mounting mechanism further comprises: the rubber belt tension rod is used for tensioning a rubber belt, and the two rubber belt tension wheels are arranged on the rubber belt tension rod; the two adhesive tape tension wheels correspond to the two adhesive tape wheels one by one; each adhesive tape tension pulley comprises: the inner ring and the outer ring are sleeved on the inner ring wheel through the bearing sleeve, the outer ring is provided with a rubber belt groove for the rubber belt to pass through, and the inner ring is sleeved on the tension rod. The outer ring can rotate relative to the inner ring, so that the friction force between the outer ring and the adhesive tape is reduced, the adhesive tape is prevented from being torn off under the condition that the passing speed of the adhesive tape is too high, or the frequency of tearing off the adhesive tape is reduced, and the processing efficiency is improved.

Description

Shielding film processing system for preventing adhesive tape from being torn

Technical Field

The invention relates to the technical field of shielding film processing, in particular to a shielding film processing system for preventing an adhesive tape from being pulled apart.

Background

The shielding film (or spraying film, shielding glue and shielding adhesive tape) belongs to one kind of shielding products, and is mainly used for shielding paint, shielding coating, indoor decoration materials and the like when products such as automobiles, ships, trains, cabs, furniture and the like are sprayed with paint, so that the cleanness of parts which do not need to be decorated is protected.

The existing shielding film processing equipment has many problems during processing, such as: the equipment operation is inconvenient, the automation degree is low, the position of the adhesive tape is not accurately attached, the film roll is easy to deviate and shift in the processing process, defective products are more, namely the product percent of pass is more, the adhesive tape roll is inconvenient to mount, the processing efficiency is low, the processed shielding film has low adhesive force, the adhesive tape is easy to break in the processing process, and the like.

Disclosure of Invention

The invention aims to provide a masking film processing system for preventing an adhesive tape from being torn.

The invention is realized by the following steps:

a masking film processing system for preventing tape tearing, comprising: a rack and a tape roll mounting mechanism;

the frame includes: the two fixing plates are oppositely arranged on the left and the right, and the working plate is vertically connected with the two mounting plates and is positioned between the two mounting plates;

the adhesive tape roll mounting mechanism includes: two symmetrically arranged adhesive tape mounting racks; the adhesive tape mounting rack is arranged on the working plate;

each tape mounting bracket includes: the device comprises a support frame arranged on the rack, a cross beam vertically connected with the support frame and a rubber belt wheel used for mounting a rubber belt roll;

the adhesive tape wheel is sleeved at one end of the cross beam far away from the support frame through a bearing; an opening for taking and placing the adhesive tape roll is formed between the two opposite cross beams;

the adhesive tape roll mounting mechanism further comprises: the rubber belt tension rod is used for tensioning a rubber belt, and the two rubber belt tension wheels are arranged on the rubber belt tension rod; the two adhesive tape tension wheels correspond to the two adhesive tape wheels one by one;

each adhesive tape tension pulley comprises: the inner ring and the outer ring are sleeved on the inner ring wheel through the bearing sleeve, the outer ring is provided with a rubber belt groove for the rubber belt to pass through, and the inner ring is sleeved on the tension rod.

Furthermore, the inner ring is provided with an internal thread, and the tension rod is provided with an external thread matched with the internal thread of the inner ring.

Further, the length of the inner race in the axial direction of the tension rod is greater than the length of the outer race.

Furthermore, the circumferential surfaces of two ends of the inner ring are provided with anti-skid grains.

Furthermore, a plurality of strip-shaped grooves extending along the axial direction are formed in the circumferential surface of the adhesive tape wheel, and an elastic belt is embedded into each strip-shaped groove.

Further, the height of the elastic belt is greater than the depth of the strip-shaped groove, and the elastic belt is provided with a protruding part located outside the strip-shaped groove.

Furthermore, the section of the strip-shaped groove is trapezoidal, the section of the elastic belt is consistent with that of the strip-shaped groove, and the side length of one side, close to the adhesive tape wheel, of the trapezoidal section of the strip-shaped groove is larger than that of one side, far away from the adhesive tape wheel, of the side.

Furthermore, the diameter of the section of the adhesive tape wheel increases progressively along the direction from the opening to the support frame.

Furthermore, the adhesive tape wheel is composed of a plurality of adhesive tape secondary wheels which are connected with each other and have the same axial lead, and the diameters of the adhesive tape secondary wheels form an arithmetic progression.

Further, the tolerance of the arithmetic progression is 1-50 mm.

Compared with the prior art, the invention has the beneficial effects that:

the invention provides a shielding film processing system for preventing an adhesive tape from being torn off, which comprises a rack and an adhesive tape roll mounting mechanism arranged on the rack; the adhesive tape roll mounting mechanism further comprises: the rubber belt tension rod is used for tensioning a rubber belt, and the two rubber belt tension wheels are arranged on the rubber belt tension rod; the two adhesive tape tension wheels correspond to the two adhesive tape wheels one by one; each adhesive tape tension pulley comprises: the inner ring and the outer ring are sleeved on the inner ring wheel through the bearing sleeve, the outer ring is provided with a rubber belt groove for the rubber belt to pass through, and the inner ring is sleeved on the tension rod. The outer ring can rotate relative to the inner ring, so that the friction force between the outer ring and the adhesive tape is reduced, the adhesive tape is prevented from being torn off under the condition that the passing speed of the adhesive tape is too high, or the frequency of tearing off the adhesive tape is reduced, and the processing efficiency is improved.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

Fig. 1 is a schematic structural diagram of a masking film processing system for preventing a tape from being torn according to an embodiment of the present invention at a first viewing angle;

fig. 2 is a schematic structural diagram of a masking film processing system for preventing a tape from being torn according to an embodiment of the present invention at a second viewing angle;

FIG. 3 is a schematic structural diagram of a bearing mounting plate according to an embodiment of the present invention;

FIG. 4 is a schematic view of the internal structure of the first connecting shaft and the film shaft in a connected state according to the embodiment of the present invention;

FIG. 5 is a schematic cross-sectional view of a tape mounting bracket according to an embodiment of the present invention;

fig. 6 is a schematic cross-sectional view of a tape wheel according to an embodiment of the invention;

FIG. 7 is a schematic view of the cross-sectional structure A-A of FIG. 5;

FIG. 8 is a schematic cross-sectional view of a tape tension pulley according to an embodiment of the present invention;

fig. 9 is a schematic structural diagram of a limiting element according to an embodiment of the present invention;

FIG. 10 is a cross-sectional view of a positioning base according to an embodiment of the present invention;

FIG. 11 is a schematic view showing the moving direction of a film and a tape when a masking film is processed by using a masking film processing system for preventing a tape from being torn according to an embodiment of the present invention;

FIG. 12 is a schematic structural diagram of a masking film processed by the masking film processing system for preventing a tape from being torn according to the embodiment of the present invention;

fig. 13 is a schematic cross-sectional view of a masking film processed by the masking film processing system for preventing a tape from being torn according to the embodiment of the present invention.

Icon: 100-a masking film processing system to prevent tape tearing; 101-a frame; 200-film roll mounting mechanism; 300-tape roll mounting mechanism; 400-cartridge mounting mechanism; 500-a film smoothing assembly; 600-tape film bonding mechanism; 102-a fixed plate; 103-a working plate; 201-thin film shaft; 202-first connecting shaft; 203-a first bearing; 204-bearing mounting plate; 205-card slot; 206-non-slip mat; 207-locking bolt; 208-a first projection; 209-a first recess; 301-tape mount; 302-a scaffold; 303-a cross beam; 304-a tape wheel; 305-a strip groove; 306-an elastic band; 307-tape secondary wheel; 303 a-first cantilever beam; 303 b-a second cantilever beam; 308-a slide block; 309-chute; 310-adhesive tape tension bar; 311-adhesive tape tension pulley; 312-inner ring; 313-outer ring; 314-glue groove; 700-a positioning mechanism; 701-scale rod; 702-a positioning component; 703-a positioning base; 704-a positioning rod; 704 a-fixed end; 704 b-indicator terminal; 705-window; 706-location line; 707-a through hole; 708-a knob; 401-a drum mandrel; 402-a control device; 403-a shaft support assembly; 404-a second connection shaft; 405-a swing arm; 501-a first roller; 502-a second roller; 503-a third roller; 504-a fourth drum; 601-a first tape film bonding pinch roller; 602-second tape film bonding pinch roller; 801-film; 802-adhesive tape; 901-thin film portion; 902-tape zone.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", "clockwise", "counterclockwise", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings or orientations or positional relationships that the products of the present invention usually place when in use, and are used only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the devices or elements referred to must have specific orientations, be constructed in specific orientations, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.

Furthermore, the terms "horizontal", "vertical", "overhang" and the like do not imply that the components are required to be absolutely horizontal or overhang, but may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.

In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Examples

As shown in fig. 1-2, the masking film processing system 100 for preventing the adhesive tape from being torn according to the present embodiment includes: the film roll fixing device comprises a machine frame 101, a film roll mounting mechanism 200, a tape roll mounting mechanism 300, a drum core mounting mechanism 400, a film flattening assembly 500 arranged between the film roll mounting mechanism 200 and the tape roll mounting mechanism 300 and used for flattening a film, and a tape film combining mechanism 600 arranged between the tape roll mounting mechanism 300 and the drum core mounting mechanism 400 and used for pressing a tape on the film.

The processing flow of the masking film processing system 100 for preventing the tape from being torn off is substantially as follows: the film on the film roll mounting mechanism 200 is sequentially subjected to the leveling treatment by the film leveling assembly 500 and the adhesive tape film combining mechanism 600, then moves towards the cylinder core mounting mechanism 400 and is wound on the cylinder core, the adhesive tape on the adhesive tape roll mounting mechanism 300 is subjected to the treatment by the adhesive tape film combining mechanism 600, is adhered and combined to the film, forms a shielding film, and then is wound on the cylinder core of the cylinder core mounting mechanism 400. The construction and operation of the various components are described in detail below.

Specifically, in the present embodiment, the chassis 101 includes: two fixed plates 102 arranged oppositely at the left and the right, and a working plate 103 vertically connected with the two mounting plates and positioned between the two mounting plates. In the working state, the two fixing plates 102 are placed on the ground in a manner of being vertical to the ground, and the working plate 103 is approximately parallel to the ground.

The film roll mounting mechanism 200 includes: a film reel 201 for mounting the film roll and two first connecting reels 202. The two ends of the film shaft 201 are detachably connected with the two first connecting shafts 202 respectively. An end sleeve of each first connection shaft 202 remote from the film shaft 201 is rotatably connected to the frame 101.

The end of the first connecting shaft 202 away from the film shaft 201 is sleeved with a first bearing 203. Bearing mounting plates 204 for mounting the first bearings 203 are symmetrically provided on the frame 101, i.e., the fixed plate 102. Each bearing mounting plate 204 is provided with a C-letter shaped slot 205 with an opening, and the first bearing 203 is disposed in the slot 205 (as shown in fig. 3).

In order to prevent the first bearing 203 from slipping, a non-slip pad 206 is disposed on the inner wall of the slot 205, and the cross-sectional shape of the non-slip pad 206 matches the cross-sectional shape of the slot 205. The bearing mounting plate 204 is provided with a locking bolt 207 near the upper end of the clamping groove 205, the locking bolt 207 penetrates through the bearing mounting plate 204 and extends into the clamping groove 205, and the end part of the locking bolt 207 props against the non-slip mat 206. In this embodiment, the locking pin 207 is threadably engaged with the bearing mounting plate 204.

The design structure that both ends of the film shaft 201 are detachably connected with the two first connecting shafts 202 respectively can facilitate an operator to mount the film roll on the film shaft 201. When the film roll is installed, the first connecting shaft 202 is detached from the film roll 201, and then the film is wound around the film roll 201.

After the film roll is installed, the two first connecting shafts 202 are connected with the film shaft 201, and the first bearings 203 on the two first connecting shafts 202 are respectively clamped into the clamping grooves 205 on the bearing mounting plate 204; the locking bolt 207 is tightened to move the end of the locking bolt 207 toward the bottom of the locking slot 205, and the anti-slip pad 206 is pushed to contract to clamp the bearing, thereby fixing the first connecting shaft 202 to the fixing plate 102 in a manner substantially horizontal to the ground.

In addition, in order to reduce the weight of the film shaft 201, reduce the power output of the device, and reduce the energy consumption, in this embodiment, the film shaft 201 is a hollow structure. When the film shaft 201 with the hollow structure rotates, on one hand, power consumption can be reduced, energy is saved, on the other hand, the self bearing weight can be increased, and bending of an overweight film roll is prevented.

The anti-slip pad 206 is used to prevent slipping between the outer surface of the bearing and the bearing fixing plate 102, which affects the rotation effect of the film shaft 201, so that the film roll releases the film in a rotating manner more smoothly.

During processing, the film on the film roll is continuously pulled out and moves towards the cylinder core mounting mechanism 400, the film shaft 201 continuously rotates, and the coaxial rotation between the first connecting shaft 202 and the film shaft 201 needs to be ensured.

Therefore, in the present embodiment, as shown in fig. 4, the first connecting shaft 202 is provided with a plurality of first protrusions 208 on the outer circumferential surface thereof near the film shaft 201. The side wall of the inner circumferential surface of the thin film shaft 201 near one end of the first connecting shaft 202 is provided with a first groove 209 matched with the first protrusion 208, and the first protrusion 208 is arranged in the first groove 209.

When the first connecting shaft 202 and the film shaft 201 are installed, the first protrusions 208 of the first connecting shaft 202 at the end provided with the first protrusions 208 are aligned one by one with the first grooves 209 of the end of the film shaft 201. Then, the first connection shaft 202 is slowly inserted into the film shaft 201, so that each first protrusion 208 is inserted into the first groove 209, thereby enabling the first connection shaft 202 to rotate synchronously with the film shaft 201 when the film shaft 201 rotates.

Further, in the present embodiment, the cross-sectional shape of the first protrusion 208 is trapezoidal; the first groove 209 has a cross-sectional shape that fits the first protrusion 208. Preferably, the length S1 of the side of the trapezoid close to the surface of the first connecting shaft 202 is smaller than the length S2 of the side far from the surface of the first connecting shaft 202.

In the process that the first connecting shaft 202 and the film shaft 201 synchronously rotate, due to the action of centrifugal force, a loosening condition is easy to occur between the first protrusion 208 on the first connecting shaft 202 and the first groove 209 on the film shaft 201, so that the first connecting shaft 202 and the film shaft 201 are not tightly linked, namely, the film shaft 201 deviates in the axial direction; this skew influences the transport effect of film and also leads to the in-process that the film was pulled out to appear axial skew easily, further leads to the combination process of film and sticky tape to appear the dislocation, and the sticky tape can not be accurate combines to the position on the film, and then influences the effect of product.

Therefore, in the present embodiment, the trapezoidal cross section of the first protrusion 208 is designed to have a side length S1 near the surface of the first connection shaft 202 smaller than the side length S2 far from the surface of the first connection shaft 202, so that the rotation process of the first connection shaft 202 and the film shaft 201 can be synchronized. The first groove 209 of the membrane shaft 201 at the outer layer has a tendency to move away from the first protrusion 208 at the inner layer due to the centrifugal force. Therefore, the first groove 209 has a displacement in a direction away from the center of the circle. Then because the length of side that first arch 208 kept away from the centre of a circle is longer, the opening width that first recess 209 is close to the centre of a circle is narrower, and then make first arch 208 and first recess 209 cooperation degree of tightness in the pivoted in-process, it is tighter and tighter to change more, just also make the direct connection of film axle 201 and first connecting axle 202 more stable, and then avoid film axle 201 to take place the ascending skew of axial direction effectively, ensure that the combined position of sticky tape and film is accurate, reduce the defective rate of final product, improve the qualification rate.

In addition, in the present embodiment, the tape roll mounting mechanism 300 includes: two symmetrically arranged tape mounts 301. The tape mount 301 is located above the work plate 103.

As shown in fig. 1, 2, and 5, each of the tape mounts 301 includes: a support frame 302 installed on the frame 101, a beam 303 vertically connected with the support frame 302, and a tape wheel 304 for installing a tape roll. The adhesive tape wheel 304 is sleeved on one end of the cross beam 303 far away from the supporting frame 302 through a bearing. An opening for taking and placing the adhesive tape roll is formed between the two opposite cross beams 303.

In the processing process, when the adhesive tape roll needs to be installed, the required adhesive tape roll is sleeved on the adhesive tape wheel 304, and the adhesive tape roll and the adhesive tape wheel 304 are ensured to rotate synchronously.

However, in the processing process, the adhesive tape rolls of different specifications need to be used, but the inner diameters of the adhesive tape rolls of different specifications are not uniform, and obviously, if the inner diameter of the adhesive tape roll is slightly larger than the outer diameter of the adhesive tape wheel 304, the adhesive tape roll is loose and cannot rotate synchronously with the adhesive tape wheel 304, and the adhesive tape on the adhesive tape roll cannot be pulled out and released.

In order to avoid the above problem, in the present embodiment, as shown in fig. 5 and fig. 6, a plurality of strip-shaped grooves 305 extending along the axial direction are formed on the circumferential surface of the adhesive tape wheel 304, and an elastic belt 306 is embedded in each strip-shaped groove 305. The height of the elastic band 306 is greater than the depth of the strip groove 305 so that the elastic band 306 has a protrusion outside the strip groove 305.

Through the depth that highly is greater than strip groove 305 with elastic band 306, elastic band 306 has the project organization that is located the strip groove 305 outside, can make when installing the adhesive tape roll that the internal diameter is greater than the external diameter of adhesive tape wheel 304 a little on adhesive tape wheel 304, the adhesive tape roll extrudees the project organization of elastic band 306, according to effort and reaction force's principle, the internal surface of adhesive tape roll also receives the reaction force of many places toward keeping away from the centre of a circle direction, and then makes the adhesive tape roll drive adhesive tape wheel 304 and rotate at the pivoted in-process.

The circumferential surface of the adhesive tape wheel 304 is provided with a plurality of strip-shaped grooves 305 extending along the axial direction, so that a plurality of elastic belts 306 can be embedded in the adhesive tape wheel 304. The elastic belts 306 can increase the contact area between the tape wheel 304 and the inner surface of the tape roll, thereby increasing the friction force therebetween, and further ensuring that the tape roll and the tape wheel 304 can rotate synchronously.

If the diameter of the adhesive tape roll is smaller and is matched with the diameter of the adhesive tape wheel 304, the adhesive tape roll can be mounted only by taking the elastic belt 306 out of the strip-shaped groove 305 and then sleeving the adhesive tape roll on the adhesive tape wheel 304. Through the structural design of the adhesive tape roll mounting mechanism 300, the adhesive tape roll is convenient to mount and operate, the adhesive tape roll can be mounted and adapted in multiple specifications, and the practicability is improved.

When the elastic belt 306 is mounted (at this time, the adhesive tape roll is not mounted), since the strip-shaped groove 305 on the adhesive tape wheel 304 is distributed along the circumferential direction, it is necessary to prevent the elastic belt 306 at the bottom of the adhesive tape wheel 304 (i.e., the elastic belt 306 near the ground direction) from directly falling from the strip-shaped groove 305 (i.e., from being separated from the adhesive tape wheel 304 along the radial direction) under the action of its own gravity. In the present embodiment, to solve the above problem, the sectional shape of the strip-shaped groove 305 is trapezoidal, the sectional shape of the elastic belt 306 is the same as the sectional shape of the strip-shaped groove 305, and the side length of the trapezoidal sectional shape of the strip-shaped groove 305 on the side close to the adhesive tape wheel 304 is larger than the side length of the trapezoidal sectional shape on the side far from the adhesive tape wheel 304.

Through the structural design that the side length of one side of the trapezoid cross section of the strip-shaped groove 305 close to the adhesive tape wheel 304 is larger than that of one side far away from the adhesive tape wheel 304, the opening width of the strip-shaped groove 305 is gradually narrowed along the radial direction, so that the elastic belt 306 close to the ground can be prevented from directly falling from the opening of the strip-shaped groove 305, and an operator can conveniently install a plurality of elastic belts 306. When the elastic band 306 is attached, the end of the elastic band 306 is aligned with the end of the strip-shaped groove 305, and the elastic band 306 is slid in the axial direction of the adhesive tape wheel 304, so that the elastic band 306 is inserted into the strip-shaped groove 305.

Further, in order to further improve the classification of the mountable tape roll, in the present embodiment, as shown in fig. 2 and 5, the diameter of the section of the tape wheel 304 increases along the direction from the opening to the supporting frame 302.

Preferably, in the present embodiment, the tape wheel 304 is composed of a plurality of tape secondary wheels 307 connected to each other and having the same axial line, and the diameters of the plurality of tape secondary wheels 307 form an arithmetic progression.

In order to adapt to the phenomenon, the tape wheel 304 in the present embodiment is composed of a plurality of tape secondary wheels 307 connected with each other and having the same axial lead, and the diameters of the plurality of tape secondary wheels 307 form an arithmetic progression, so that the plurality of tape secondary wheels 307 with different discontinuous variable diameters are distributed in the axial direction of the whole tape wheel 304. The tolerance of the formed arithmetic progression is preferably 1-50 mm. The specific tolerance value can be designed according to actual conditions, and can be any one or a value between any two of 1mm, 2mm, 5mm, 10mm, 30mm, 40mm, 50mm and the like.

Of course, the number of the tape secondary wheels 307 can be set according to actual conditions, and is at least 3. In the present embodiment, 3 are preferable. In other embodiments, there may be 4, 5, 6, etc. more than one.

Compared with a design structure in which the diameter of the tape wheel 304 increases by a continuous numerical value (for example, a structure with a trapezoidal or tapered cross section), the diameter of the tape secondary wheels 307 is distributed by a discontinuous variable numerical value, which can better adapt to the diameter distribution of the existing tape roll, and further can install more tape rolls of different specifications or types. This design, in combination with the elastic band 306, allows to install substantially the majority of the rolls of adhesive tape on the market, which greatly improves the adaptability and practicality of the device.

In addition, the diameters of the tape secondary wheels 307 are distributed in a non-continuous variable number, so that the inner wall of the tape roll sleeved on the tape secondary wheels 307 can be completely contacted with the tape secondary wheels 307, and the condition that the tape ring is inclined due to the fact that a large gap exists between the inner wall of the tape roll and the tape wheel 304 (which is the case if the diameter of the tape wheel 304 is a design structure with continuous numerical value increasing) and the pulled tape is displaced to influence the attaching accuracy is avoided.

The tape roll mounting mechanism 300 of the present embodiment has two tape mounting frames 301, i.e. two tape wheels 304, and can mount two tape rolls, and during processing, the tapes on the two tape rolls are respectively bonded to two side edges of the film in the width direction, so that the processed shielding film has strong adhesive force.

In addition, during processing, the spacing distance between the two adhesive tape rolls needs to be adjusted according to the width of the film, so that the distance can be consistent with the width of the film to be processed.

In order to solve the above problem, in the present embodiment, as shown in fig. 2 and 5, the cross beam 303 includes a first cantilever beam 303a and a hollow second cantilever beam 303b connected to the supporting frame 302. The adhesive tape wheel 304 is disposed at one end of the first cantilever beam 303 a. The other end of the first cantilever beam 303a extends into the second cantilever beam 303b and is slidably connected with the second cantilever beam 303 b.

Through the design structure that the first cantilever beam 303a is slidably connected with the second cantilever beam 303b, the first cantilever beam 303a can be displaced in the axial direction thereof, so that the distance between the two adhesive tape wheels 304 can be adjusted.

Further preferably, as shown in fig. 5 and 7, a protruding sliding block 308 is disposed on an outer circumferential surface of one end of the first cantilever beam 303a extending into the second cantilever beam 303b, a sliding groove 309 extending along an axial direction of the second cantilever beam 303b is disposed on an inner wall of the second cantilever beam 303b, and the sliding block 308 is disposed in the sliding groove 309.

When the distance between the two adhesive tape wheels 304 is adjusted along the axial direction of the first cantilever beam 303a, the first cantilever beam 303a is easy to rotate in the circumferential direction, which affects the precision of the distance between the two adhesive tape wheels 304, so that the occurrence of the above situation can be avoided through the matching of the sliding block 308 and the sliding groove 309, the first cantilever beam 303a is ensured to make linear motion relative to the second cantilever beam 303b, and the accuracy of adjusting the distance between the adhesive tape wheels 304 is improved.

Further, in the present embodiment, as shown in fig. 1, 2 and 8, the tape roll mounting mechanism 300 further includes: a tape tension bar 310 for tensioning the tape and two tape tension pulleys 311 provided on the tape tension bar 310. The two tape tension wheels 311 are corresponding to the two tape wheels 304 one by one, and are respectively used for providing tension to the tapes on the corresponding tape wheels 304.

As shown in fig. 8, each tape tension pulley 311 includes: the inner ring 312 and an outer ring 313 sleeved on the wheel of the inner ring 312 through a bearing are arranged, a tape groove 314 for a tape to pass through is arranged on the outer ring 313, and the inner ring 312 is sleeved on the tension rod.

The conventional masking film processing system 100 for preventing the tape from being torn off does not provide the tape tension pulley 311 on the tape tension bar 310, and the tape passes through the tension bar directly, so that the tape is easily torn off when passing through the tape tension bar 310 at a high speed.

The arrangement of the adhesive tape tension wheel 311 is adopted in the embodiment, so that the outer ring 313 can rotate relative to the inner ring 312, the problem that the adhesive tape is torn off when passing through the adhesive tape tension rod 310 at a high speed can be avoided, the processing efficiency is improved, and the reject ratio of products is reduced.

Further, in order to use the film process corresponding to different widths, it is ensured that the distance between the two tape tension pulleys 311 can be adjusted. In this embodiment, the inner ring 312 is provided with an internal thread, and the tension rod is provided with an external thread matched with the internal thread of the inner ring 312.

The inner ring 312 and the tension rod can enable the inner ring 312 to transversely move on the tension rod along the axial direction thereof in a threaded matching manner, so that the distance between the two tension wheels can be adjusted to adapt to the distance between the two adhesive tape wheels 304, and the adhesive tapes on the two sides can be accurately processed to the positions of the two sides of the film.

In addition, in the present embodiment, the length of the inner race 312 in the axial direction of the tension rod is larger than the length of the outer race 313. The circumferential surfaces of the two ends of the inner ring 312 are provided with anti-skid grains. The anti-slip lines can enable an operator to better screw the inner ring 312 to enable the inner ring to make linear motion on the adhesive tape tension rod 310, so that slipping is avoided, and operability is improved.

Further, in order to ensure that the tapes on the two tape wheels 304 can be more accurately adhered to the film to be processed, in the present embodiment, as shown in fig. 1 and 2, on the frame 101, a positioning mechanism 700 is further provided for quantitatively measuring the distance between the two tape wheels 304, so that the tapes can be processed and bonded to the film at a more proper position.

Wherein, positioning mechanism 700 includes: a scale bar 701 with scale lines and two positioning components 702 slidably disposed on the scale bar 701. The two ends of the scale rod 701 are fixed on the frame 101 near the position of the supporting frame 302. In this embodiment, the scale bar 701 is positioned above the work plate 103.

Specifically, as shown in fig. 9 and 10, each positioning assembly 702 includes: positioning base 703 and positioning rod 704. The positioning base 703 is fitted over the scale bar 701, and the positioning rod 704 has a fixed end 704a and an indicating end 704 b. The fixed end 704a is connected to the positioning base 703. The indicator end 704b points towards the beam 303 on which the tape wheel 304 is mounted.

Preferably, in this embodiment, the scale mark at the middle position of the scale bar 701 is marked as zero, and the scale marks extending to the two ends are sequentially increased, that is, the scale marks gradually increase toward the two ends of the scale bar 701.

The positioning base 703 is provided with a window 705 for observing the scale marks on the scale rod 701, a positioning line 706 is provided on the positioning base 703 near the window 705, and the positioning line 706 and the axis of the positioning rod 704 are located on the same plane.

The width of the film is determined when adjusting the spacing between the rolls of tape on the two tape wheels 304. Based on the determined width, the operator then manually slides the positioning base 703, and looks through the window 705 in the positioning base 703 and determines the distance between the positioning lines 706 to the zero scale line, such that the distance between the two positioning lines 706 is approximately equal to the width of the film. Then, the first cantilever beam 303a is adjusted so that the tape roll on the tape wheel 304 is positioned at the position indicated by the indication end 704b of the positioning rod 704, and the tape roll and the positioning rod 704 are substantially on the same plane. Therefore, the spacing distance between the two adhesive tape rolls can be adjusted more accurately, the adhesive tape rolls can be combined to the two side edges of the film more accurately, the situation that an operator repeatedly debugs the distance between the adhesive tape wheels 304 back and forth is avoided, the labor intensity is reduced, and the efficiency is improved.

In this embodiment, as shown in fig. 1 and 10, the scale rod 701 is a square rod with a square cross section, and the positioning base 703 is provided with a square hole matched with the scale rod 701, and the square hole is communicated with the window 705. The square hole design prevents the positioning base 703 from rotating in the circumferential direction during sliding on the scale bar 701, ensures that it slides in a straight line, and improves operability.

As shown in fig. 10, the positioning base 703 is provided with a through hole 707 through which the positioning rod 704 passes, at a position in the same vertical direction as the window 705. The fixed end 704a of the positioning rod 704 passes through the through hole 707, and the outer surface of the positioning rod 704 is provided with an external thread. The inner wall of the through hole 707 is provided with an internal thread that mates with the external thread on the positioning rod 704, and the end of the fixed end 704a of the positioning rod 704 is provided with a knob 708.

The positioning rod 704 is threadably engaged with the positioning base 703 so that an operator can adjust the distance between the indicating end 704b of the positioning rod 704 and the adhesive tape wheel 304. When the mounted adhesive tape roll is thicker, the operator can adjust the knob 708 to enlarge the distance between the indicating end 704b and the adhesive tape wheel 304, so that enough space is provided for accommodating the adhesive tape roll; when the mounted tape roll is thin, in order to improve the indication accuracy of the indication end 704b, the operator can adjust the knob 708 to narrow the distance between the indication end 704b and the tape wheel 304, so that the tape wheel 304 can be adjusted to the indication position of the indication end 704b at a more accurate position.

In this embodiment, as shown in fig. 1 and 2, the cartridge mounting mechanism 400 includes: a drum spindle 401 for mounting the drum core and a control device 402 for controlling the rotation of the drum spindle 401. The cartridge spindle 401 has one end connected to a control device 402 and the other end detachably connected to a shaft support assembly 403 provided on the frame 101, the control device 402 being mounted on the frame 101. The control device 402 drives the cylinder mandrel 401 to rotate through the motor, automatic production is achieved, the rotating speed of the cylinder mandrel 401 is accurately controlled, machining efficiency is improved, labor intensity is reduced, and the purpose of automatic machining is achieved integrally.

The shaft support assembly 403 includes: the second connecting shaft 404 and the swing arm 405, one end of the swing arm 405 is sleeved on the second connecting shaft 404 through a bearing, and the other end of the swing arm 405 is rotatably connected with the rack 101 (for example, is rotatably connected with the rack 101 through a hinge). One end of the second connecting shaft 404 far away from the swing arm 405 extends into the barrel core shaft 401 to be detachably connected with the barrel core shaft 401. The axis of rotation of the swing arm 405 is substantially perpendicular to the axis of the spool 401. The swing arm 405 and the second connecting shaft 404 constitute a T-shaped structure.

The outer circumferential surface of one end, close to the barrel mandrel 401, of the second connecting shaft 404 is provided with a plurality of second protrusions, the inner circumferential surface of one end, close to the second connecting shaft 404, of the barrel mandrel 401 is provided with a plurality of second grooves matched with the second protrusions, and the second protrusions are arranged in the second grooves in a one-to-one correspondence manner.

The connection structure of the second connection shaft 404 and the cartridge core shaft 401 substantially coincides with the connection structure of the first connection shaft 202 and the film shaft 201, and reference may be made to the connection manner of the first connection shaft 202 and the film shaft 201.

When mounting the drum core of the shielding film which is a finished product for winding, the swing arm 405 is rotated to release the connection relationship between the second connection shaft 404 and the drum core shaft 401, then the drum core is sleeved on the drum core shaft 401, and then the swing arm 405 is rotated to connect the second connection shaft 404 and the drum core shaft 401. The second connection shaft 404 and the barrel core shaft 401 can synchronously rotate by the matching of the second protrusion and the second groove, and meanwhile, a supporting force is provided for the barrel core shaft 401, so that the barrel core shaft 401 is prevented from being stressed and bent on one side.

Of course, the outer diameter of cartridge spindle 401 matches the inner diameter of the cartridge so that the mounted cartridge can rotate as cartridge spindle 401 rotates.

In addition, as shown in fig. 1, 2 and 11, the film flattening assembly 500 includes: a plurality of rollers provided on the frame 101 are arranged in a staggered manner. In this embodiment, the number of the rollers is 4, which are respectively a first roller 501, a second roller 502, a third roller 503 and a fourth roller 504. The number and the positions of the rollers can be set according to actual conditions. Both ends of each roller are respectively connected with the frame 101 in a rotating way, i.e. both ends of the roller are connected with two fixing plates 102 in a rotating way.

In addition, the tape film joining mechanism 600 includes: a plurality of adhesive tape film bonding pinch rollers arranged on the frame 101 in a staggered manner. In this embodiment, the number of the tape film bonding pinch rollers is 2, and the first tape film bonding pinch roller 601 and the second tape film bonding pinch roller 602 are provided. The number and the positions of the adhesive tape films combined with the pinch rollers can be set according to actual conditions. After 2 sticky tape films combine the compressing tightly of pinch roller to handle, can improve the sticky tape certainly the sticky tape film combines quantity and position can set up according to actual conditions.

In this embodiment, the axes of the film bobbin 201, the roller, the scale bar 701, the beam 303, the tension bar, the first tape film bonding pinch roller 601, the second tape film bonding pinch roller 602, and the bobbin shaft 401 are arranged in parallel with each other on the frame 101.

It should be noted that the processing system of the present embodiment is applicable to films including, but not limited to: low density polyethylene film (LDPE), polyester film (PET), nylon film, cast polypropylene film (CPP), polyvinyl chloride (PVC), Polyethylene (PE), polyvinylidene chloride (PVDC), and biaxially oriented polypropylene film (BOPP).

The tape applied to the masking film processing system 100 for preventing the tape from being torn in the embodiment of the present invention is a double-sided tape.

In addition, in order to improve the safety of the device, a plurality of strip-shaped holes are formed in the surfaces of the drum mandrel 401 and the film shaft 201 in the embodiment, and are used for indicating whether the drum mandrel 401 and the film shaft 201 are in a rotating state, so that an operator can conveniently pick and place the adhesive tape roll and the drum core at a proper time according to the rotating indication.

The processing procedure of the masking film processing system 100 for preventing the tearing of the adhesive tape according to the present embodiment will be briefly described as follows.

Referring to fig. 11, a film roll is mounted on a film shaft 201, a film 801 is pulled out (the moving direction of the film 801 is shown as an arrow in fig. 11) and passes through the surface of a lower first roller 501, the surface of an upper second roller 502, the surface of the lower second roller 502 and the surface of an upper fourth roller 504 from left to right in sequence, then the surface of a working plate 103 is flattened, and the film passes through a first adhesive tape film bonding pinch roller 601, a second adhesive tape film bonding pinch roller 602 and then is wound on a core mounted on a core shaft 401;

in addition, after the tape wheel 304 is positioned and adjusted by the positioning mechanism 700 (the moving direction of the tape 802 is shown by an arrow in fig. 11), the tape roll is mounted on the tape secondary wheel 307 at a corresponding position, the tape 802 is pulled out, the back surface, i.e. the surface without viscosity, of the tape is wound around the tension wheel, and then the tape is attached to the film on the lower surface of the first tape film combination pressing wheel 601 through the surface with viscosity, so as to complete the preliminary processing operation, then the control device 402 is started to drive the drum core shaft 401 to rotate at a preset speed, the film 801 is continuously wound on the drum core, and as the rotation progresses, the tape 802 is continuously attached to two sides of the film 801 to form a molded product shielding film, and then the molded product shielding film is wound on the drum core.

After the processing is completed or the shielding film with a preset length is obtained, a tool such as scissors is used to cut off the formed product from the second adhesive tape film combined with the pressing wheel 602, and then the cylinder core with the shielding film is taken down, so that the processing process of the shielding film is completed. When the shielding film processed by the equipment provided by the embodiment of the invention is used, the required length is taken, then the protective layer of the adhesive tape on the shielding film is manually torn off, and the shielding film is adhered to a workpiece.

The structure of the masking film produced by the masking film processing system 100 for preventing the tearing of the adhesive tape according to the present invention is shown in fig. 12 and 13, and the masking film includes a film portion 901 and an adhesive tape area 902 attached to both side edges of the film portion 901.

The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes will occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A masking film processing system for preventing tape from tearing, comprising: a rack and a tape roll mounting mechanism;

the cross beam comprises a first cantilever beam and a hollow second cantilever beam connected with the support frame, the adhesive tape wheel is arranged at one end of the first cantilever beam, and the other end of the first cantilever beam extends into the second cantilever beam and is in sliding connection with the second cantilever beam; the outer circumferential surface of one end of the first cantilever beam extending into the second cantilever beam is provided with a protruding sliding block, the inner wall of the second cantilever beam is provided with a sliding groove extending along the axial direction of the second cantilever beam, and the sliding block is arranged in the sliding groove;

2. The masking film processing system for preventing a tape from being torn off as claimed in claim 1, wherein the inner ring is provided with an internal thread, and the tension bar is provided with an external thread to which the internal thread of the inner ring is fitted.

3. The masking film processing system for preventing a tape from being torn as claimed in claim 2, wherein the length of the inner ring in the axial direction of the tension bar is larger than the length of the outer ring.

4. The masking film processing system for preventing a tape from being torn off as claimed in claim 3, wherein the circumferential surfaces of both ends of the inner ring are provided with anti-slip lines.

5. The masking film processing system of any one of claims 1 to 4, wherein the circumferential surface of the tape wheel is formed with a plurality of grooves extending in the axial direction, and each groove is embedded with an elastic band.

6. The masking film processing system for preventing tearing of an adhesive tape as claimed in claim 5, wherein the elastic tape has a height larger than a depth of the strip groove, and the elastic tape has a protrusion outside the strip groove.

7. The masking film processing system of claim 6, wherein the cross-sectional shape of the strip groove is trapezoidal, the cross-sectional shape of the elastic band is identical to the cross-sectional shape of the strip groove, and the side length of the trapezoidal cross-sectional shape of the strip groove on the side close to the adhesive tape wheel is larger than the side length of the trapezoidal cross-sectional shape of the strip groove on the side far from the adhesive tape wheel.

8. The masking film processing system of any one of claims 1 to 4, wherein the diameter of the cross section of the tape wheel increases in a direction from the opening to the supporting frame.

9. The masking film processing system of claim 8, wherein the tape wheel comprises a plurality of tape sub-wheels connected to each other and having the same axis, and the diameters of the plurality of tape sub-wheels form an arithmetic progression.

10. The masking film processing system for preventing tape from tearing as claimed in claim 9, wherein the tolerance of the arithmetic progression is 1-50 mm.