Automatic film cutting sectional transmission type film laminating machine and film laminating method thereof
Technical Field
The invention belongs to the technical field of film coating, and particularly relates to an automatic film cutting sectional transmission type film coating machine and a film coating method thereof.
Background
The glass product is easy to wear and dirty on the surface, so that film coating is required on the surface of the glass during storage, a common film coating machine is required to cut the film along the edge of the glass after film coating is finished, and the glass product is fragile, so that the film is not usually cut by a long-blade one-blade type cutter, and the glass is prevented from being crushed due to overlarge cutting force of a cutter or slight deviation. In order to protect the glass, some manufacturers adopt a manual film cutting mode, and the film is manually cut along the edge of the glass by a blade, but the consistency of the operation quality cannot be ensured, and the processing efficiency is low. Some factories install a film cutting mechanism on a film plating machine, and a cutter is driven by a linear module to slide forwards along the edge of glass so as to cut off a film.
For example, patent publication No. CN204278680U discloses a large-scale glass laminating machine, which comprises a frame, a film placing device, a film laminating device and a film cutting device, wherein the film cutting device can be arranged in the middle of a discharging platform in a back-and-forth moving way, so that glass with different lengths can be suitable for being moved to a required film cutting position for film cutting, a film edge cannot be left on the glass edge after film cutting, the film can be completely aligned with the glass after film cutting, the glass can be effectively protected from damage and scratch, and the film laminating effect is good.
However, the servo motor of the laminating machine drives the synchronous belt transmission mechanism to drive the cutting knife rack mechanism to slide left and right on the linear slide rail, and the cutting knife can completely cut off the film only from the leftmost side to the rightmost side, so that the moving stroke is large and the processing efficiency is low.
Disclosure of Invention
The invention aims to provide an automatic film cutting sectional transmission type film laminating machine so as to solve the problem of low film cutting efficiency of the existing film laminating machine.
The invention provides the following technical scheme:
The automatic film cutting and sectional transmission type film laminating machine comprises a roller type conveying belt, an unreeling roller, a press roller group and a film cutting assembly, wherein a platy product passes through the press roller group and is conveyed to the direction of the film cutting assembly at intervals by the roller type conveying belt, and a film on the unreeling roller is covered on the product after being tensioned by the press roller group;
The film cutting assembly comprises a lifting driving piece, a rotary driving piece, a first rack, a second rack and a cutter, wherein the rotary driving piece is arranged at the output end of the lifting driving piece, a first gear meshed with the first rack and the second rack is arranged at the output end of the rotary driving piece, the first rack and the second rack are distributed on the front side and the rear side of the first gear and are staggered in the left-right direction, the cutter is arranged at the left end and the right end of the first rack and the right end of the second rack, and the rotary driving piece drives the first rack and the second rack to reversely move so that the cutter cuts a film between the front product and the rear product.
The first pressing wheel and the second pressing wheel are arranged on the support frame on the front side and the rear side of the rotary driving piece and used for pressing a film on a product, the first pressing wheel and the second pressing wheel correspond to the position of the cutter one by one, and the first pressing wheel and the second pressing wheel respectively follow the first rack and the second rack to move.
Preferably, the first pressing wheel and the second pressing wheel roll onto the product from the edge of the product in an inclined way and press the film, the inclined direction of the first pressing wheel is opposite to the moving direction of the first pressing wheel, and the inclined direction of the second pressing wheel is opposite to the moving direction of the second pressing wheel.
The pressing wheel I and the pressing wheel II are preferably arranged on the pressing rod respectively, the upper end of the pressing rod is hinged to the switching block through a rotating shaft, the switching block is fixed on the first rack or the second rack, the pushing block is arranged below the rotating shaft on the pressing rod, the pressing block is arranged above the rotating shaft on the switching block, the torsion spring is arranged on the rotating shaft, and two ends of the torsion spring are respectively extruded by the pressing block and the pushing block in opposite directions.
Preferably, the first pressing wheel and the second pressing wheel both comprise a first wheel surface and a second wheel surface which are coaxial, the first wheel surface is positioned on the paraxial side of the second wheel surface, the first wheel surface is a round surface concaved inwards by the second wheel surface, the second wheel surface presses the end part of a product, an arc-shaped groove is formed in the pressing rod, and the second wheel surface is embedded into the arc-shaped groove.
Preferably, a pressing strip is arranged on the side plate of the support frame, two ends of the pressing strip are respectively fixed on the side plates on the left side and the right side, and the pressing strip presses the film between the front cutter group and the rear cutter group.
Further, the lifting driving piece is arranged on the portal frame, the portal frame is arranged on the linear module, and when the film is cut, the linear module drives the film cutting assembly to synchronously move in the same direction with the product.
Preferably, a sensor is arranged on the frame and used for detecting that the rear end of a product passes through the first rack, and the sensor is in communication connection with a controller which is in communication connection with the linear module, so that the linear module drives the film cutting assembly to move along with the product.
Further, the roller type conveyer belt comprises a first conveying section and a second conveying section which are connected in a front-back mode, a film cutting assembly is arranged between the first conveying section and the second conveying section, the compression roller set is arranged above the second conveying section, products are conveyed by the second conveying section during film covering, and after the film cutting assembly cuts off the film, the first conveying section accelerates to convey the products to the next working procedure.
The invention also provides a film coating method of the film coating machine, which comprises the following steps:
The sheet-shaped products are conveyed to a press roller group one by one and at equal intervals by a roller conveyor belt, the unreeled films are pressed on the surfaces of the products by the press roller group and move towards the direction of a film cutting assembly, and adjacent products are connected by the films;
When the rear end of the product passes through the film cutting assembly, the film cutting assembly is moved to control the film cutting assembly and the product to synchronously move, the lifting driving piece descends the cutter, and the rotary driving piece drives the rack I and the rack II to reversely move, so that the cutter cuts the film along the edges of the front product and the rear product;
the first pressing wheel and the second pressing wheel roll to the surface of the product along the left end and the right end of the product respectively when the film is cut, and move along with the first rack and the second rack, so that the film is pressed when the film is cut;
after the film cutting is completed, the lifting driving part upwards resets the cutter, and the roller type conveyer belt accelerates the coated product to the next working procedure.
The beneficial effects of the invention are as follows:
The film cutting assembly can realize automatic film cutting, a rotary driving piece of the film cutting assembly drives a first rack and a second rack to reversely move, cutters are arranged at two ends of the first rack and the second rack, when the first rack moves rightwards, the cutters at the left end and the right end simultaneously cut films along the rear end edges of products until the first rack moves in place, the two cutters completely separate the films from the products, similarly, the second rack also moves leftwards, the cutters at the left end and the right end simultaneously cut films along the front end edges of the next products until the films are completely separated from the products, and compared with the conventional film cutting device, the film cutting device has the advantages that the film can be completely cut off only by half of the travel of the movement of the first rack and the second rack, and the processing efficiency is higher. Only one rotary driving piece is needed to drive the two groups of cutters to separate the film from the front and rear products simultaneously, and the structure is more compact.
The first pressing wheel and the second pressing wheel roll along with the cutter, and press the film while cutting, so that the film is prevented from tilting. The first pressing wheel and the second pressing wheel are obliquely pressed on the product, the oblique direction is opposite to the moving direction, the downward partial pressure of the product is reduced by applying oblique pressure to the product by the pressing wheel, the product is prevented from being crushed, and the pressing wheel can float upwards when being subjected to larger thrust and friction force of the product, so that the pressing wheel is flexibly pressed on the surface of the product, and the product is further protected.
The invention relates to a roller type conveyer belt sectional transmission, which comprises a first conveying section and a second conveying section which are connected in front and back, wherein a compression roller group is arranged above the second conveying section, a product is conveyed by the second conveying section at a slower speed during film covering and matched with the compression roller group, so that a film is smoothly covered on the surface of the product, and after the film is finished and cut, the first conveying section accelerates conveying of the product, and the product is prevented from being worn due to conveying interference with the next product.
Drawings
The accompanying drawings are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate the invention and together with the embodiments of the invention, serve to explain the invention. In the drawings:
FIG. 1 is a schematic diagram of the front view of the present invention;
FIG. 2 is a partial bottom schematic view of the present invention;
FIG. 3 is a schematic view of a slit film assembly of the present invention;
FIG. 4 is a schematic cross-sectional view of section A-A of FIG. 3;
FIG. 5 is a schematic view of a puck mounting structure according to the present invention;
FIG. 6 is a schematic diagram of a puck according to the present invention.
The drawing shows that the drawing comprises a roller type conveyer belt 1, an unreeling roller 21, a conveying section I, a conveying section 22, a conveying section II, a blocking block 23, a conveying section 24, a conveying section III, a pressing roller group 3, a pressing roller 31, a pressing roller 32, a lifting cylinder 4, a film cutting assembly 41, a lifting driving piece 42, a rotary driving piece 421, a gear I, a gear 422, a rack I, a rack 423, a rack II, a 424, a cutter 43, a portal frame 44, a supporting frame 45, a pressing wheel I, a 451, a switching block 452, a pressing rod 453, a torsion spring 454, a pressing block 455, a pushing block 456, a rotating shaft 457, a wheel surface I, a 458, a wheel surface II, 459, an arc groove 46, a pressing wheel II, a 47, a pressing bar 48, a linear module 49, a photoelectric sensor 5, glass, 6 and a film.
Detailed Description
Example 1
As shown in fig. 1 and 2, an automatic film cutting and sectional transmission type film laminating machine comprises a roller type conveying belt 1, an unreeling roller 2, a press roller set 3 and a film cutting assembly 4, wherein a sheet-shaped product passes through the press roller set 3 and is conveyed to the direction of the film cutting assembly 4 at intervals by the roller type conveying belt 1, and a film 6 on the unreeling roller 2 is covered on the product after being tensioned by the press roller set 3. The product of this example is illustrated as glass.
The roller conveyor belt 1 comprises a first conveying section 21 and a second conveying section 22 which are connected in a front-back mode, a compression roller set 3 is arranged above the second conveying section 22, and products are conveyed at a slower speed through the second conveying section 22 during film covering, so that the compression roller set 3 can smoothly cover the film 6 on the surfaces of the products. When the film coating and cutting are completed, the first conveying section 21 accelerates the product to be conveyed to the next process.
Referring to fig. 1, in order to feed the front and rear glass pieces 5 into the press roll set 3 at equal intervals, a stopper 23 is installed at the inlet side of the press roll set 3, the stopper 23 is lifted up by one cylinder at regular time to stop the glass 5 of the rear side supply, and after the time, the cylinder lowers the stopper 23, and the glass 5 of the rear side supply is fed into the press roll set 3 for lamination.
In order to prevent the glass from being worn when being blocked by the blocking block 23, the feeding end of the roller conveyor 1 is provided with a conveying section III 24, and when the blocking block 23 is jacked, the conveying section III 24 pauses to run until the blocking block 23 descends, and the conveying section III 24 continuously feeds the glass into the press roller group. The controller is in communication with the cylinder of the blocking block 23 and the drive motor of the third conveying section 24.
The press roller group 3 comprises two press rollers 31 which are distributed up and down, wherein the height of the upper press roller can be adjusted by a lifting cylinder 32 so as to change the gap between the upper press roller 31 and the lower press roller 31 and adapt to the film coating of glass 5 with different specifications. The lower press roller is driven to rotate by a motor to convey the glass 5. In this embodiment, two press roller sets 3 are installed on the frame in the front-rear direction, and the film 6 is uniformly pressed on the glass 5. The two press roller groups 3 are driven by gears and belts to run synchronously.
Referring to fig. 2 and 3, the film cutting assembly 4 includes a lifting driving member 41, a rotation driving member 42, a first rack 422, a second rack 423, and a cutter 424.
The gantry 43 is arranged on the frame, the lifting driving parts 41 are arranged at the left end and the right end of the gantry 43, and the lifting driving parts 41 can be cylinders.
The output end of the lifting driving member 41 is provided with a supporting frame 44, the rotary driving member 42 is arranged on the bottom surface of the supporting frame 44, and the lifting driving member 41 can drive the rotary driving member 42 to move up and down. The rotary drive 42 may alternatively be a motor.
The output end of the rotary driving piece 42 is provided with a first gear 421, the first gear 421 is in meshed connection with a first rack 422 and a second rack 423, the first rack 422 and the second rack 423 are distributed on the front side and the rear side of the first gear 421 and are staggered in the left-right direction, and cutters 424 are arranged at the left end and the right end of the first rack 422 and the second rack 423. The rotary driving member 42 drives the first gear 421 to rotate, and the first gear 421 drives the first rack 422 and the second rack 423 to move reversely, so that the cutter 424 cuts the film 6 between the front and rear products, and the film 6 breaks along the end of the products. For example, when the first rack 422 moves rightward, the cutters 424 at both left and right ends thereof simultaneously cut the film 6 along the rear end edge of the first product until the first rack 422 moves in place, and then both cutters 424 thereof complete the stroke, thereby completely cutting the film 6.
Referring to fig. 3, a first pressing wheel 45 and a second pressing wheel 46 are mounted on the support frame 44 on the front and rear sides of the rotary driving member 42, and they press the film 6 onto the product during film cutting to prevent the film 6 from being uneven or tilting. The number and the positions of the first pressing wheel 45 and the second pressing wheel 46 are in one-to-one correspondence with the cutting knife 424, and the first pressing wheel 45 and the second pressing wheel 46 move along with the first rack 422 and the second rack 423 respectively.
Referring to fig. 4, the first and second pressing wheels 45 and 46 roll obliquely from the edge of the product to the product and press the film 6, the first pressing wheel 45 is inclined in the opposite direction to the first pressing wheel 45, and the second pressing wheel 46 is inclined in the opposite direction to the second pressing wheel 46. For example, when puck one 45 and puck two 46 move to the right, the frictional resistance of glass 5 against the puck tends to float to the upper left, avoiding the puck from rigidly pressing glass 5 and damaging glass 5.
Specifically, the first rack 422 and the second rack 423 are fixedly provided with the adapter 451, the first pressing wheel 45 and the second pressing wheel 46 are respectively installed on the pressing rod 452, and the upper end of the pressing rod 452 is hinged on the adapter 451 through a rotating shaft 456. The push rod 452 is provided with a push block 455 below the rotating shaft 456, the adapter block 451 is provided with a pressing block 454 above the rotating shaft 456, the rotating shaft 456 is sleeved with a torsion spring 453, two ends of the torsion spring 453 are respectively pressed by the pressing block 454 and the push block 455 in opposite directions, namely, the upper end of the torsion spring 453 presses the pressing block 454 upwards, and the lower end of the torsion spring 453 presses the push block 455 downwards, so that the first pressing wheel 45 and the second pressing wheel 46 press the film 6 downwards.
Referring to fig. 3 and 6, the front and rear sides of the first and second pressing wheels 45 and 46 respectively include a first wheel surface 457 and a second wheel surface 458, the first wheel surface 457 is located on the paraxial side of the second wheel surface 458, the first wheel surface 457 is a circular surface concaved inwards by the second wheel surface 458, the pressing rod 452 is provided with an arc groove 459, and the second wheel surface 458 is embedded in the arc groove 459 and can rotate along the arc groove 459. Because the distance between the front tread II 458 and the rear tread II 458 is larger than the distance between the front tread I457 and the rear tread I457, the contact area between the tread II 458 and the end part of the product is larger, and the film 6 can be pressed more flatly.
Referring to fig. 3 and 4, the side plates of the support frame 44 are horizontally provided with pressing strips 47, two ends of the pressing strips 47 are respectively fixed on the side plates at the left and right sides, the pressing strips 47 are positioned between the front and rear sets of cutters 424, and the film 6 positioned between the front and rear sets of cutters 424 is pressed downwards, so that the film 6 is in a tensioning state, and the film 6 is ensured to be cut off more smoothly.
The film coating method of the film coating machine comprises the following steps:
The glass 5 is conveyed by the roller conveyor belt 1 between an upper pressing roller 31 and a lower pressing roller 31 of the pressing roller group 3 one by one, the unreeled film 6 is pressed on the surface of the glass 5 by the pressing roller group 3, the pressing roller group 3 is driven to rotate by a motor to move the glass 5 towards the film cutting assembly 4, and a small section of interval is arranged between the adjacent glass 5 and connected by the film 6;
When the rear end of the glass 5 passes through the film cutting assembly 4, the roller conveyor belt 1 is stopped, the lifting driving piece 41 descends the cutters 424 and enables the pressing bar 47 to downwards press the film 6 positioned between the front cutter group 424 and the rear cutter group 424, the rotary driving piece 42 drives the rack one 422 and the rack two 423 to reversely move, and the two cutter groups simultaneously cut the film 6 along the edges of the front glass 5 and the rear glass 5;
While cutting the film 6, the first pressing wheel 45 and the second pressing wheel 46 roll to the surface of the product along the left end and the right end of the two pieces of glass respectively, and move along with the first rack 422 and the second rack 423, and press the film 6 while cutting the film;
After the film cutting is completed, the lifting driving member 41 upwardly resets the cutter 424 and the pressing bar 47, the rotary driving member 42 resets the first rack 422 and the second rack 423, and the first conveying section 21 of the roller type conveying belt 1 accelerates the coated glass 5 to the next process.
Example 2
According to the embodiment, on the basis of the embodiment 1, film cutting and film covering actions are synchronously performed, film covering efficiency is further improved, and the evenness of the continuous film covering is guaranteed, so that crease caused by conveying interruption is avoided.
Referring to fig. 2, a linear module 48 extending in the front-rear direction is mounted on the frame, the gantry 43 is mounted on the linear module 48, and the linear module 48 drives the film cutting assembly 4 and the glass 5 to move synchronously and in the same direction when cutting films, so that film cutting and film covering are performed synchronously.
In this embodiment, a photoelectric sensor 49 is mounted on the frame, and the photoelectric sensor 49 is connected to a controller in communication, and the controller is connected to the linear module 48, the lifting driving member 41, and the rotation driving member 42 in communication. When the rear end of the glass 5 passes through the photoelectric sensor 49, the photoelectric sensor 49 obtains a detection signal and sends the detection signal to the controller, and the controller immediately controls the linear module 48 to drive the film cutting assembly 4 to move along with the glass 5, and meanwhile the film cutting assembly 4 starts to cut films. And after the film cutting is completed, the controller controls the linear module to reset.
In order to further improve the reliability of film cutting, two photoelectric sensors 49 are installed on the frame to respectively detect whether film cutting ends of two adjacent products move in place, and the controller controls the linear module 48 to move and controls the cutter 424 to cut films only when the two photoelectric sensors 49 detect that the two products move in place.
Other structures of this embodiment are the same as those of embodiment 1.
The foregoing description is only a preferred embodiment of the present invention, and the present invention is not limited thereto, but it is to be understood that modifications and equivalents of some of the technical features described in the foregoing embodiments may be made by those skilled in the art, although the present invention has been described in detail with reference to the foregoing embodiments. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.