CN108714925A - Chipless fixed-length cutting machine - Google Patents

Abstract

The invention discloses a kind of chipless fixed-length cutting machines, it includes fixed frame, fixed length conveying device, cutter device and controller, fixed length conveying device includes upper carry-over pinch rolls, lower carry-over pinch rolls and servo-driver, upper carry-over pinch rolls and lower carry-over pinch rolls are respectively rotatably supported on fixed frame, the transfer passage of product is formed between the upper carry-over pinch rolls and lower carry-over pinch rolls, the servo-driver is connected with lower carry-over pinch rolls, is rotated with will pass through carry-over pinch rolls under servo driver drives, lower carry-over pinch rolls drive product to move ahead again；The cutter device is arranged on fixed frame；The servo-driver and cutter device are connect with controller signals respectively, so that controller controls servo-driver intermittent action so that lower carry-over pinch rolls have rotary state and stationary state two states；With when lower carry-over pinch rolls remain static, the controller control cutter device cuts product.Fixed length of the present invention conveys product, has the advantages that easy to operate, cutting accuracy is high, no dust, end face is smooth.

Description

Chipless cut-to-length cutting machine

technical field

The invention relates to a chipless fixed-length cutting machine.

Background technique

At present, with the continuous development of the plastics industry, plastic products have been widely used in daily life, such as automobile sealing strips, shutters, edge banding and so on. The cutting machine is an indispensable part in the production line of these small profiles. At present, most of the cutting machines for small profile products in the market are sawing. The cutting accuracy of the length is different, most of them are above ±2mm, and in the products with high precision requirements, this kind of traditional method cannot meet the requirements of use. And this cutting method will produce sawdust, which has a certain impact on the workshop environment.

Contents of the invention

The technical problem to be solved by the present invention is to overcome the existing technical defects and provide a chipless fixed-length cutting machine, which can transport products at fixed lengths, and has the advantages of convenient operation, high cutting precision, no dust, flat end surface, etc.

In order to solve the above-mentioned technical problems, the technical solution of the present invention is: a chipless cut-to-length cutting machine, which includes:

fixed frame;

A fixed-length conveying device, the fixed-length conveying device includes an upper traction roller, a lower traction roller and a servo driver, the upper traction roller and the lower traction roller are respectively rotatably supported on a fixed frame, and the upper traction roller and the lower traction roller The conveying channel of the product is formed between the rollers, and the servo driver is connected with the lower traction roller, so that the lower traction roller is driven to rotate through the servo driver, and the lower traction roller drives the product forward;

cutting device, the cutting device is arranged on the fixed frame;

The controller, the servo driver and the cutting device are respectively connected with the controller signal, so that the controller controls the intermittent action of the servo driver, so that the lower traction roller has two states: rotating state and static state; and when the lower traction roller is in the static state, The controller controls the cutting device to cut the product.

Further, in order to enable the upper traction roller to compress different products, so that the chipless fixed-length cutting machine is suitable for the production of different products, the fixed-length conveying device also includes an adjustable pre-tensioning device, and the fixed frame is hinged with a pressing plate, The upper traction roller is rotatably supported on the pressure plate, and the adjustable pretension device acts on the end of the pressure plate away from the hinge point of the pressure plate and the fixed frame, so that the pressure plate can be pressed down by the adjustable pretension device to increase The friction between the large lower traction roller and the product.

It further provides a structural schematic diagram of an adjustable pretension device, the adjustable pretension device includes a support arm, a pretension screw, a sliding block, a spring and a pretension block, the support arm is connected to a fixed frame, and the The sliding block is slidably fitted on the support arm, the pre-tightening block is connected with the sliding block by screws, and the pre-tightening block is in pressure contact with the upper end surface of the pressure plate, and the pre-tightening screw rod is rotatably supported On the support arm, the spring is connected between the pre-tightening screw rod and the pre-tightening block, so that the pre-tightening screw rod is screwed in to push the spring to compress, and the rebound force of the spring pushes the pre-tightening block to press the pressure plate.

Further, in order to prevent excessive pressing force between the upper traction roller 21 and the product, the adjustable pretension device also includes an anti-overpressure component, which includes a convex part arranged on the pressing plate and connected to the fixed frame. The cushion block, through the abutment of the convex part and the cushion block, limits the pressing force of the upper traction roller on the product.

Further, in order to make the anti-overpressure assembly suitable for different products, the spacer is eccentrically and rotatably supported on the fixed frame, and a handle is connected to the spacer, so that the raised part can be adjusted by turning the handle. the height of.

A specific structure of the cutting device is further provided, the cutting device includes a support rod, a support plate, a cylinder and a blade, one end of the support rod is connected to the fixed frame, and the support plate is connected to the other end of the support rod, The cylinder body of the air cylinder is connected with the support plate, and the blade is connected with the piston rod of the air cylinder, so that the blade can be driven up and down by the expansion and contraction of the piston rod.

Further, in order to make the blade lift better, the cutting device also includes a guiding device for guiding the lifting of the blade, the blade is connected to the piston rod of the air cylinder through a mounting plate, and the guiding device includes a The guide post on the top and the self-lubricating bearing connected on the mounting plate, the self-lubricating bearing is sleeved on the guide post.

Further, in order to facilitate cutting and ensure cutting accuracy, the cutting device further includes a limiting block arranged on the fixing frame and used to limit movement of the product when the blade cuts the product.

Further, in order to protect the chip-free fixed-length cutting machine and further ensure the precision of the fixed-length cutting, the chip-free fixed-length cutting machine also includes a detection frame placed in front of the fixed-length conveying device, and the detection frame is installed with At least one upper photoelectric switch for detecting whether there is a product passing through the top of the detection frame and at least one lower photoelectric switch for detecting whether there is a product passing under the detection frame, and the upper photoelectric switch and the lower photoelectric switch are respectively connected to the controller.

A specific structure of a servo driver is further provided, and the servo driver is a servo motor.

After adopting the above-mentioned technical scheme, first set the cutting length in the controller. During the production process, the controller controls the servo driver to act intermittently, so that the lower traction roller has two alternate states of rotating state and static state. When the traction roller is in a static state, the controller controls the cutting device to cut the product, and the lower traction roller transmits a product with a set length in each rotation cycle. The cutting precision of the present invention is high, and the cutting precision reaches ±0.1mm The production is stable; the invention adopts the cylinder to drive the blade up and down to complete the cutting of the product, which further improves the cutting accuracy and is free of dust; the adjustable pre-tensioning device of the present invention enables the upper traction roller to compress different products, thereby making it dust-free The fixed-length cutting machine is suitable for the production of different products, which improves the versatility of the present invention and improves economic benefits; the present invention is provided with an upper photoelectric switch and a lower photoelectric switch, and when a product is detected by the lower photoelectric switch, the controller Automatically controls the servo drive to start. When the product is stretched and the product is detected by the upper photoelectric switch, the controller will control the servo drive to stop regardless of whether the length reaches the set cutting length. In the event of an abnormality, it can be effectively The ground protects the chipless cut-to-length cutting machine.

Description of drawings

Fig. 1 is the structural representation of chipless cut-to-length cutting machine of the present invention;

Fig. 2 is the structural representation of fixed-length conveying device of the present invention;

Fig. 3 is the left view of Fig. 2;

Fig. 4 is a schematic structural view of the cutting device of the present invention.

Detailed ways

In order to make the content of the present invention more clearly understood, the present invention will be further described in detail below based on specific embodiments and in conjunction with the accompanying drawings.

As shown in Figures 1 to 4, a chipless cut-to-length cutting machine includes:

Fixture 1;

A fixed-length conveying device, the fixed-length conveying device comprises an upper traction roller 21, a lower traction roller 22 and a servo driver 23, and the upper traction roller 21 and the lower traction roller 22 are respectively rotatably supported on the fixed frame 1, and the The product conveying channel is formed between the upper traction roller 21 and the lower traction roller 22, and the servo driver 23 is connected with the lower traction roller 22, so that the lower traction roller 22 is driven to rotate through the servo driver 23, and the lower traction roller 22 drives the product forward ;

A cutting device, the cutting device is arranged on the fixed frame 1;

The controller, the servo driver 23 and the cutting device are respectively connected with the controller signal, so that the controller controls the servo driver 23 to act intermittently, so that the lower traction roller 22 has two states: rotating state and static state; and when the lower traction roller 22 is in In the static state, the controller controls the cutting device to cut the product. Specifically, the lower pulling roller 22 transports a product of a set length in each rotation cycle.

As shown in Figures 1, 2, and 3, in order to make the upper traction roller 21 compress different products, so that the chipless fixed-length cutting machine is suitable for the production of different products, the fixed-length conveying device also includes an adjustable pretensioning device , the fixed frame 1 is hinged with a pressure plate 3, the upper traction roller 21 is rotatably supported on the pressure plate 3, and the adjustable pre-tensioning device acts on the hinge point of the pressure plate 3 away from the pressure plate 3 and the fixed frame 1 On the end, so that the pressure plate 3 can be pressed down by the adjustable pre-tensioning device, so as to increase the friction force between the lower traction roller 22 and the product. Specifically, the contact force between the upper traction roller 21 and the lower traction roller 22 has a great influence on the length counting accuracy of the fixed-length feeding device, and must be properly adjusted during the production of different products.

As shown in Figures 1, 2 and 3, the adjustable pretensioning device includes a support arm 41, a pretensioning screw 42, a sliding block 43, a spring 44 and a pretensioning block 45, and the support arm 41 is connected to the fixed frame 1 Above, the sliding block 43 is slidably fitted on the support arm 41, the pre-tightening block 45 is connected with the sliding block 43 through screws, and the pre-tightening block 45 is in pressure contact with the upper end surface of the pressing plate 3, so The pre-tightening screw rod 42 is rotatably supported on the support arm 41, and the spring 44 is connected between the pre-tightening screw rod 42 and the pre-tightening block 45, so that the pre-tightening screw rod 42 is screwed to push the spring 44 to compress, The rebound force of the spring 44 pushes the pre-tightening block 45 to compress the pressing plate 3 again.

As shown in Figures 1 and 2, in order to prevent the pressing force between the upper traction roller 21 and the product from being too large, the adjustable pretension device also includes an anti-overpressure component. The convex portion 51 and the cushion block 52 connected to the fixed frame 1 limit the pressing force of the upper pulling roller 21 on the product through the abutment of the convex portion 51 and the cushion block 52 .

As shown in Figures 1 and 2, in order to make the anti-overpressure assembly suitable for different products, the pad 52 is eccentrically and rotatably supported on the fixed frame 1, and the pad 52 is connected with a handle 53, In order to adjust the raised height of the raised portion 51 by turning the handle 53 .

As shown in Figures 1 and 4, the cutting device includes a support rod 61, a support plate 62, a cylinder 63 and a blade 64, one end of the support rod 61 is connected to the fixed frame 1, and the support plate 62 is connected to the support rod The other end of 61, the cylinder body of the cylinder 63 is connected with the support plate 62, and the blade 64 is connected on the piston rod of the cylinder 63, so that the blade 64 is lifted and lowered by the expansion and contraction of the piston rod. In this embodiment, the material of the blade 64 is alloy, but it is not limited thereto.

As shown in Figures 1 and 4, in order to make the blade 64 lift better, the cutting device also includes a guide device for guiding the lifting of the blade 64, and the blade 64 is connected to the piston of the cylinder 63 through the mounting plate 7. On the rod, the guide device includes a guide post 81 connected to the fixed frame 1 and a self-lubricating bearing 82 connected to the mounting plate 7 , and the self-lubricating bearing 82 is sleeved on the guide post 81 .

As shown in FIG. 4 , in order to facilitate cutting and ensure cutting accuracy, the cutting device also includes a limiting block 65 arranged on the fixing frame 1 and used to limit movement of the product when the blade 64 cuts the product.

As shown in Figure 1, in order to protect the chip-free fixed-length cutting machine and further ensure the precision of the fixed-length cutting, the chip-free fixed-length cutting machine also includes a detection frame 9 placed in front of the fixed-length conveying device. The detection frame 9 is equipped with at least one upper photoelectric switch 101 for detecting whether products pass through the top of the detection frame 9 and at least one lower photoelectric switch 102 for detecting whether products pass under the detection frame 9. The photoelectric switch 101 and the lower photoelectric switch 102 are signal-connected to the controller respectively. In this embodiment, when the lower photoelectric switch 102 detects a product, the lower photoelectric switch 102 generates a first trigger signal, and when the upper photoelectric switch 101 detects a product, the upper photoelectric switch 101 generates a second trigger signal. When the controller receives the first trigger signal, the controller controls the servo driver 23 to start, and when the controller receives the second trigger signal, the controller controls the servo driver 23 to stop. Specifically, the detection frame 9 is placed between the main tractor and the fixed-length feeding device, and when the lower photoelectric switch 102 can detect the product, it indicates that the product between the main tractor and the fixed-length conveying device is abundant, and the product In the relaxed and collapsed state, the controller can work normally. When the upper photoelectric switch 101 can detect the product, it means that the product between the main tractor and the fixed-length feeding device is in a tensioned state. At this time, the main tractor or The fixed-length conveying device may fail, and the main tractor will have a pulling force on the product, which will resist the conveying of the product by the upper traction roller 21 and the lower traction roller 22, and will also affect the fixed-length conveying accuracy.

As shown in FIG. 3 , the servo driver 23 is a servo motor.

The working principle of the present invention is as follows:

First set the cutting length in the controller. During the production process, the controller controls the servo drive 23 to act intermittently, so that the lower traction roller 22 has two alternate states of rotating state and static state, and the lower traction roller 22 is at rest. state, the controller controls the cutting device to cut the product, and the lower traction roller 22 transmits the product with a set length in each rotation cycle. The cutting precision of the present invention is high, and the cutting precision reaches within ±0.1mm. Stable; the invention adopts the cylinder 63 to drive the blade 64 to lift up and down to complete the cutting of the product, which further improves the cutting accuracy and is free of dust; the adjustable pre-tensioning device of the present invention enables the upper traction roller 21 to compress different products, thereby making it free of scraps The fixed-length cutting machine is suitable for the production of different products, which improves the versatility of the present invention and improves economic benefits; the present invention is provided with an upper photoelectric switch 101 and a lower photoelectric switch 102, and when the product is detected by the lower photoelectric switch 101, the The controller automatically controls the start of the servo drive 23. When the product is stretched and the product is detected by the upper photoelectric switch 101, no matter whether the counted length reaches the set cutting length, the controller controls the servo drive 23 to stop. It can effectively protect the chipless cut-to-length cutting machine.

The specific embodiments described above have further described the technical problems, technical solutions and beneficial effects solved by the present invention in detail. It should be understood that the above descriptions are only specific embodiments of the present invention and are not intended to limit the present invention. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims (10)

1. A chipless fixed-length cutting machine, characterized in that it comprises: fixed frame (1); A fixed-length conveying device, the fixed-length conveying device comprising an upper traction roller (21), a lower traction roller (22) and a servo driver (23), and the upper traction roller (21) and the lower traction roller (22) are respectively rotatable Supported on the fixed frame (1), the conveying channel of the product is formed between the upper traction roller (21) and the lower traction roller (22), and the servo driver (23) is connected with the lower traction roller (22), so that The lower traction roller (22) is driven to rotate by the servo driver (23), and the lower traction roller (22) drives the product forward; a cutting device, the cutting device is arranged on the fixed frame (1); The controller, the servo driver (23) and the cutting device are respectively connected with the controller signal, so that the controller controls the servo driver (23) to act intermittently, so that the lower traction roller (22) has two states: a rotating state and a static state; And when the lower pulling roller (22) is in a static state, the controller controls the cutting device to cut the product. 2. The chipless fixed-length cutting machine according to claim 1, characterized in that: the fixed-length conveying device also includes an adjustable pre-tensioning device, and a pressure plate (3) is hinged on the fixed frame (1), so that The above traction roller (21) is rotatably supported on the pressing plate (3), and the adjustable pre-tensioning device acts on the end of the pressing plate (3) away from the hinge point between the pressing plate (3) and the fixed frame (1) , so that the pressure plate (3) can be pressed down by the adjustable pre-tensioning device, so as to increase the frictional force between the lower traction roller (22) and the product. 3. The chipless cut-to-length cutting machine according to claim 2, characterized in that: the adjustable pretension device includes a support arm (41), a pretension screw (42), a sliding block (43), a spring ( 44) and pre-tightening block (45), the support arm (41) is connected on the fixed frame (1), and the sliding block (43) is slidingly fitted on the support arm (41), and the pre-tightening block (45 ) is connected with the sliding block (43) by screws, and the pre-tightening block (45) is in crimping contact with the upper end surface of the pressure plate (3), and the pre-tightening screw rod (42) is rotatably supported on the support On the arm (41), the spring (44) is connected between the pre-tightening screw rod (42) and the pre-tightening block (45), so that the spring (44) is compressed by the screwing of the pre-tightening screw rod (42), The resilience of the spring (44) promotes the preload block (45) to compress the pressure plate (3) again. 4. The chipless cut-to-length cutting machine according to claim 2, characterized in that: the adjustable pretension device also includes an anti-overpressure assembly, and the overpressure prevention assembly includes a convex part ( 51) and the spacer (52) connected on the fixed frame (1), the pressing force of the upper traction roller (21) on the product is limited by the abutment of the protrusion (51) and the spacer (52). 5. The chipless cut-to-length cutting machine according to claim 4, characterized in that: the pad (52) is eccentrically and rotatably supported on the fixed frame (1), and the pad (52) A handle (53) is connected on the top, so that the raised height of the raised portion (51) can be adjusted by turning the handle (53). 6. The chipless cut-to-length cutting machine according to claim 1, characterized in that: the cutting device comprises a support rod (61), a support plate (62), a cylinder (63) and a blade (64), and the support One end of rod (61) is connected on the fixed mount (1), and described support plate (62) is connected on the other end of support rod (61), and the cylinder body of described air cylinder (63) and described support plate (62) Connected, the blade (64) is connected on the piston rod of the air cylinder (63), so that the blade (64) is lifted and lowered by the expansion and contraction of the piston rod. 7. The chipless cut-to-length cutting machine according to claim 6, characterized in that: the cutting device also includes a guide device for lifting the guide blade (64), and the blade (64) passes through the mounting plate (7) ) is connected on the piston rod of the cylinder (63), and the guide device includes a guide post (81) connected to the fixed frame (1) and a self-lubricating bearing (82) connected to the mounting plate (7), The self-lubricating bearing (82) is sleeved on the guide post (81). 8. The chipless cut-to-length cutting machine according to claim 1, characterized in that: the cutting device also includes a set on the fixed frame (1), and is used to limit the movement of the product when the blade (64) cuts the product. the limit block(65). 9. The chip-free fixed-length cutting machine according to claim 1, characterized in that: it also includes a detection frame (9) placed in front of the fixed-length conveying device, and at least one machine tool is installed on the detection frame (9). An upper photoelectric switch (101) for detecting whether products pass through the top of the detection frame (9) and at least one lower photoelectric switch (102) for detecting whether products pass under the detection frame (9), the upper photoelectric switch (101) and the lower photoelectric switch (102) are signal-connected to the controller respectively. 10. The chipless cut-to-length cutting machine according to claim 1, characterized in that: the servo driver (23) is a servo motor.