CN112519390A - Cutter device of SMT printing machine - Google Patents

Abstract

The invention belongs to the technical field of printing machines and discloses a cutter device of an SMT printing machine, which comprises a base table, wherein supporting plates are fixedly arranged at two ends of the top of the base table, buffering devices are fixedly arranged at the tops of the two supporting plates, cutter shells are arranged on the inner sides of the two buffering devices, a cutter is movably clamped at the bottom of each cutter shell, a locking bolt is fixedly arranged at the lower end of each cutter shell, an outer frame is fixedly arranged at the top of the base table, and a rotating rod is fixedly arranged at the upper end inside the outer frame. The invention achieves the purpose of good cutting effect by arranging the cutter, the buffer device, the arc-shaped extrusion block and the like, adopts the motor to drive the rotating rod and the arc-shaped extrusion block to work, can easily realize the continuous extrusion and descending of the cutter by the arc-shaped extrusion block, and simultaneously can play a good role in adjusting the cutting frequency and the extrusion force because of the arrangement of the driving gear and the driven gear.

Description

Cutter device of SMT printing machine

Technical Field

The invention belongs to the technical field of printing machines, and particularly relates to a cutter device of an SMT printing machine.

Background

SMT is a surface mount technology (surface mount technology), called surface mount or surface mount technology, which is a circuit mounting and connecting technology that surface mount components (SMC/SMD, chinese called chip components) without pins or short leads are mounted on the surface of a printed circuit board or other substrates and soldered and assembled by means of reflow soldering or dip soldering, etc., and with the rapid development of SMT technology, the SMT printer is also applied to the field of conventional printers, and the use effect and efficiency of the printer using SMT technology are much higher than those of conventional printers.

The existing cutter device of the SMT printing machine has the following problems in use: the traditional cutter device is too simple in structure, is driven by a structure such as an air cylinder, is difficult to control the force, is difficult to adjust the cutting frequency, cannot judge whether the printing plate is cut or not when the printing plate is cut, and the uncut printing plate affects the product quality; and the existing cutter device lacks protective measures when transporting the cut printing plate, and the printing plate is easy to damage.

Disclosure of Invention

The invention aims to solve the problems and provides a cutter device of an SMT printing machine, which has the advantages of good cutting effect and good blanking effect.

In order to achieve the purpose, the invention provides the following technical scheme: a cutter device of an SMT printer comprises a base table, wherein supporting plates are fixedly mounted at two ends of the top of the base table, a buffer device is fixedly mounted at the top of each supporting plate, a cutter shell is arranged on the inner side of the buffer device, a cutter is movably clamped at the bottom of the cutter shell, a locking bolt is fixedly mounted at the lower end of the cutter shell, an outer frame is fixedly mounted at the top of the base table, a conveying belt is fixedly mounted at the upper end of the left side of the base table, a rotating rod is fixedly mounted at the upper end inside the outer frame, an arc-shaped extrusion block is fixedly mounted in the middle of the periphery of the rotating rod, a driven gear is fixedly mounted at the left end of the rotating rod, a driving gear is meshed at the bottom of the driven gear, a first motor is fixedly mounted at the left side of the driving gear, an arc-shaped rack is arranged on one side, the diameter of the addendum circle of the arc-shaped rack is equal to that of the arc-shaped extrusion block; the rotating rod drives the arc-shaped extrusion block to rotate, so that the arc-shaped extrusion block is contacted with and extrudes the cutter shell downwards, and the cutter shell enables the cutter to move downwards to cut off the printing plate; when the rotating rod continues to drive the arc-shaped extrusion block to rotate, the arc-shaped rack rotates to a position meshed with the straight rack to be meshed with the straight rack, and the cutter is still kept at the position height when the printing plate is cut off; the bottom of the buffer device is provided with a sliding block, the sliding block drives the buffer device above the sliding block to slide in a sliding groove in the supporting plate, one side of the sliding block is fixedly connected with a third spring, and the other end of the third spring is fixedly connected with the end part of the sliding groove; the cleaning device comprises a driving rod, a sleeve is sleeved on the periphery of the driving rod, a clamping plate is fixedly welded on the right side of the sleeve, a first spring is fixedly installed on the left side inside the clamping plate, a telescopic plate is fixedly installed on the right side of the first spring, a sponge cylinder is installed on the right side of the telescopic plate, and the driving rod is fixedly installed at the left end of the top of the base table; the sponge cylinder comprises an upper sponge part and a lower detection part, wherein the lower detection part is a conductor and is internally provided with a positive electrode; and a negative electrode is arranged in the conveying belt.

Preferably, the both ends at conveyer belt top are equal fixed mounting have the spacing fence, outer frame has been placed to the bottom of spacing fence, the right side fixed mounting of sweeping device has the second motor, the left side fixed mounting of outer frame has three cylinder pole, and is three the equal fixed mounting in periphery of cylinder pole has a dysmorphism section of thick bamboo, and two belts have been cup jointed in the left side of three cylinder pole, the lower extreme the right side fixed mounting of cylinder pole has the third motor.

Preferably, the conveying belt comprises an upper horizontal belt and a lower inclined belt, and the horizontal belt is made of a conductive alloy material with a smooth surface; the inclined belt is made of rubber and has large friction force.

Preferably, the arc-shaped extrusion block and the arc-shaped rack are movably connected with the rotating rod; the straight rack is movably connected with the upper part of the cutter shell.

Preferably, the buffering device comprises a chassis, a guide rod is fixedly mounted in the middle of the top of the chassis, a first spring is fixedly mounted at the top of the chassis, a top plate is fixedly mounted at the top of the first spring, a supporting block is fixedly mounted at the top of the top plate, a lifting ring is sleeved at the upper end of the guide rod, a limiting plate is fixedly mounted at the top of the guide rod, and the bottom of the chassis is fixedly mounted at the top of the supporting plate.

Preferably, the arc extrusion blocks are provided in plurality, the bottoms of the arc extrusion blocks are in contact with the top of the cutter, and the perimeter of the driven gear is four times that of the bearing of the driving gear.

Preferably, the outer frame is of a right-angled triangle structure, the three cylindrical rods are fixedly mounted at the upper, middle and lower ends of the bevel edge of the outer frame, and one end of the special-shaped cylinder is of a convex structure.

Preferably, when the cutter cuts off the printing plate and the sponge cylinder rotates to be in contact with the horizontal belt, the lower detection part on the sponge cylinder is directly in contact with the horizontal belt, the positive electrode in the sponge cylinder is communicated with the negative electrode in the horizontal belt, and the cutter device continues to work normally; when the cutter does not cut off the printing plate, the sponge cylinder rotates to be above the horizontal belt, the lower detection part of the sponge cylinder is in contact with the printing plate which is not cut off above the horizontal belt, the positive electrode in the sponge cylinder and the negative electrode in the horizontal belt cannot be conducted, and the cutter device stops working.

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

1. the invention achieves the purpose of good cutting effect by arranging the cutter, the buffer device, the arc extrusion block and the like, the rotating rod and the arc extrusion block are driven by the motor to work, then the continuous extrusion and descending of the cutter by the arc extrusion block can be easily realized, meanwhile, the cutting frequency and the extrusion force can be well adjusted due to the arrangement of the driving gear and the driven gear, the buffer device is fixedly provided with the first spring structure, when the cutter is pressed downwards by the arc extrusion block, the first spring can quickly complete the release of the elasticity along with the rotation of the arc extrusion block, so that the cutter can be lifted and lowered in a reciprocating way under the control of the first motor, and the good cutting purpose is achieved.

2. The invention is provided with an arc rack, a straight rack, a sweeping device, a cutter, a buffer device and the like, after the cutter cuts off a printing plate, the arc rack is driven to continue rotating along with a rotating rod, the rotating arc rack drives the straight rack to horizontally move forward, the moving straight rack drives the cutter to move forward through a cutter shell, the cutter can horizontally move under the driving of the arc rack and the straight rack while keeping the position height of the printing plate to be cut off, and further pushes the printing plate to be cut off forward by a distance L, the distance L of the printing plate to be pushed forward after being cut off can be controlled by controlling the length of the arc rack meshed with the straight rack, when a sponge cylinder 156 rotates to be contacted with a horizontal belt, the sponge cylinder falls between the position of the printing plate after being pushed and the position when being cut, the sponge cylinder is directly contacted with the upper surface of the horizontal belt, in the process that the sponge cylinder is driven and moves forwards along the horizontal belt, the sponge cylinder is in contact with the cut printing plate and pushes the printing plate to move forwards until the printing plate is pushed onto the inclined belt; in the process that above-mentioned sponge section of thick bamboo promotes printing plate and moves to the inclined band from horizontal band 1301, the sponge section of thick bamboo is direct to take the upper surface contact with the horizontal band and promote printing plate to the inclined band at the gliding in-process in horizontal band upper surface, can directly not press on the printing plate and drive printing plate and horizontal band sliding friction move forward, can be better protect the printing plate, reduce the damage to printing plate and its top electronic component, improve the production quality of printing plate product.

3. The upper sponge part and the lower detection part are arranged on the sponge cylinder, the lower detection part is a conductor, and a positive electrode is arranged in the lower detection part; a negative electrode is arranged in the horizontal belt, and a safety voltage is connected between the positive electrode and the negative electrode; when the cutter cuts off the printing plate and the sponge cylinder rotates to be in contact with the horizontal belt, the lower detection part on the sponge cylinder 1 is directly in contact with the horizontal belt, the positive electrode in the sponge cylinder is conducted with the negative electrode in the horizontal belt, the conducted electric signal is transmitted into a controller of the printing machine, and the printing machine controls the cutter device to enable the cutter device to continue to work normally; when the cutter did not cut off the printing plate, the sponge section of thick bamboo rotate to with the horizontal band top, the lower detection portion of sponge section of thick bamboo and horizontal band top do not contacted by the printing plate of cutting off, because printing plate itself has insulating nature, positive electrode in the sponge section of thick bamboo and the negative electrode in the horizontal band can't switch on, do not have the controller that the signal of telecommunication spreads into the printing machine into, controller control cutters makes cutters stop work this moment to send alarm signal, remind operating personnel to overhaul the change to relevant part.

Drawings

FIG. 1 is a schematic view of the present invention;

FIG. 2 is a schematic view of the backside of the inventive structure;

FIG. 3 is a schematic top view of a structural base table of the present invention;

FIG. 4 is a schematic view of a cylindrical rod, a profile cylinder, a belt and a third motor according to the present invention;

FIG. 5 is a schematic cross-sectional view of a sweeping apparatus constructed in accordance with the present invention;

FIG. 6 is a schematic view of a structural cushioning device of the present invention;

FIG. 7 is a schematic view of the buffering device, the sliding groove and the third spring according to the present invention;

FIG. 8 is a schematic view of the structure of the arc-shaped extrusion block, the arc-shaped rack, the straight rack and the cutter of the present invention;

FIG. 9 is an enlarged view of a portion A of the present invention.

In the figure: in the figure: 1. a base table; 2. a support plate; 3. a buffer device; 301. a chassis; 302. a first spring; 303. a guide rod; 304. a top tray; 305. a lifting ring; 306. a support block; 307. a limiting disc; 4. a cutter housing; 5. a cutter; 6. a locking bolt; 7. rotating the rod; 8. an arc-shaped extrusion block; 9. a driven gear; 10. a drive gear; 11. a first motor; 12. a limit fence; 13. a conveyor belt; 1301. a horizontal belt; 1302. a tilt belt; 14. an outer frame; 15. a sweeping device; 151. driving the rod; 152. a sleeve; 153. clamping a plate; 154. a second spring; 155. a retractable plate; 156. a sponge cylinder; 1561. an upper sponge portion; 1562. a lower detection unit; 16. a second motor; 17. a cylindrical rod; 18. a profile cylinder; 19. a belt; 20. a third motor; 21. an arc-shaped rack; 22. a straight rack; 23. a slider; 24. a chute; 25. and a third spring.

Detailed Description

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 only a part of the embodiments of the present invention, and not all of the embodiments. 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.

Example 1

As shown in fig. 1 to 6, the invention provides a cutter device of an SMT printer, which comprises a base table 1, wherein supporting plates 2 are fixedly mounted at both ends of the top of the base table 1, buffering devices 3 are fixedly mounted at the tops of the two supporting plates 2, cutter housings 4 are arranged on the inner sides of the two buffering devices 3, cutters 5 are movably clamped at the bottom of the cutter housings 4, locking bolts 6 are fixedly mounted at the lower ends of the cutter housings 4, an outer frame 14 is fixedly mounted at the top of the base table 1, a rotating rod 7 is fixedly mounted at the upper end inside the outer frame 14, an arc-shaped extrusion block 8 is fixedly mounted in the middle of the periphery of the rotating rod 7, a driven gear 9 is fixedly mounted at the left end of the rotating rod 7, a driving gear 10 is meshed at the bottom of the driven gear 9, and a.

The conveying belt 13 is fixedly installed at the upper end of the left side of the base table 1, the conveying belt 13 comprises an upper horizontal belt 1301 and a lower inclined belt 1302, the horizontal belt 1301 is used for being matched with the cutter 5 and the sweeping device 15 to use, the horizontal belt 1301 is made of a conductive alloy material with a smooth surface, on one hand, the printing plate is cut off by matching with the cutter 5, on the other hand, in the process that the sweeping device 15 cleans the cut printing plate from the horizontal belt 1301 to the inclined belt 1302, the friction force on the printing plate is reduced, the printing plate is conveyed conveniently, and meanwhile, the abrasion on the printing plate is reduced; the inclined belt 1302 is made of rubber, has high friction force, can play a good buffering role, and prevents the printing plate from falling and being damaged due to too high sliding speed above the inclined belt, so that the subsequent normal use is influenced.

Both ends of the top of the conveying belt 13 are fixedly provided with a limit fence 12, the bottom of the limit fence 12 is provided with an outer frame 14, the left end of the top of the base table 1 is fixedly provided with a sweeping device 15, the right side of the sweeping device 15 is fixedly provided with a second motor 16, the left side of the outer frame 14 is fixedly provided with three cylindrical rods 17, the peripheries of the three cylindrical rods 17 are fixedly provided with special-shaped cylinders 18, and two belts 19 are sleeved on the left sides of the three cylindrical rods 17, a third motor 20 is fixedly installed on the right side of the lower cylindrical rod 17, the printing plates which are cut and separated are conveyed from the horizontal belt 1301 to the inclined belt 1302, in order to smoothly transfer the printing plate from the horizontal belt 1301 to the inclined belt 1302, it is operated by a motor on the sweeping device 15, and the fine extension and shortening are completed under the matching of the self structure, so that the aim of good working effect is fulfilled, and the accumulation of cutting printing plates is effectively avoided.

Wherein, buffer 3 is including chassis 301, the middle part fixed mounting at chassis 301 top has guide rod 303, and chassis 301's top fixed mounting has first spring 302, the top fixed mounting of first spring 302 has top dish 304, the top fixed mounting of top dish 304 has supporting shoe 306, the upper end of guide rod 303 has cup jointed the elevator ring 305, and the top fixed mounting of guide rod 303 has spacing dish 307, the bottom fixed mounting of chassis 301 is at the top of layer board 2, cutter 5 device utilizes the pneumatic cylinder structure to cooperate work basically in the past, but this means force control effect is poor, operating frequency often adjusts the effect poorly simultaneously, this device adopts the means of motor drive cutting, easily control effectually, it can reach the effect of shock attenuation resilience to be provided with buffer 3, guarantee that it accomplishes quick cutting work.

Wherein, the sweeping device 15 comprises a driving rod 151, and the driving rod 151 is fixedly arranged at the left end of the top of the base platform 1; the sleeve 152 is sleeved on the periphery of the driving rod 151, a clamping plate 153 is fixedly welded on the right side of the sleeve 152, a first spring 154 is fixedly installed on the left side inside the clamping plate 153, an expansion plate 155 is fixedly installed on the right side of the first spring 154, a sponge cylinder 156 is installed on the right side of the expansion plate 155, the sponge cylinder 156 has good flexibility, when the cut printing plate needs to be taken away from the horizontal belt 1301, the sweeping device 15 drives the sponge cylinder 156 to rotate through the clamping plate 153 and the expansion plate 155 and enables the sponge cylinder 156 to press the printing plate, in the process that the sweeping device 15 continues to drive the sponge cylinder 156 to rotate, on one hand, the sponge cylinder 156 continues to drive the pressed printing plate to move forward, on the other hand, the sponge cylinder 156 extrudes the first spring 154 through extruding the expansion plate 155, and the expansion plate 155 extrudes the first; after the sweeping device 15 drives the printing plate to pass through the right lower part of the sweeping device 15 through the sponge cylinder 156, in the process of continuing to advance along the horizontal belt 1301 along with the printing plate carried by the sponge cylinder 156, the extruded first spring 154 recovers elastic deformation, the first spring 154 pushes the expansion plate 155 to slide out of the two clamping plates 153, before the first spring 154 recovers all elastic deformation, the expansion plate 155 and the sponge cylinder 156 act together to push the printing plate pressed below the sponge cylinder 156 down the horizontal belt 1301, so that the printing plate slides to the inclined belt 1302 below.

The device passes through motor drive combined operation, when printing plate accomplishes the cutting and piles up in the left side of cutter 5, its rotation of motor control this moment, when expansion plate 155 not with other structure contact, the extension degree is unrestricted this moment, when it rotates lower extreme and conveyer belt 13 contact, expansion plate 155 begins to be extrudeed this moment, but its rotation is controlled all the time to the motor, and accumulational cutting printing plate all can be wiped by a sponge section of thick bamboo 156 afterwards.

Wherein, arc extrusion piece 8 is equipped with a plurality ofly, and the bottom of arc extrusion piece 8 contacts with the top of cutter 5, driven gear 9's girth is the quadruple of drive gear 10 bearing, 11 work of first motor drive dwang 7, utilize the continuous extrusion of vibrating of three lug structures of arc extrusion piece 8 to cutter 5 afterwards, thereby accomplish the printing plate cutting, for the normal rotational speed of guaranteeing the motor, be provided with driven gear 9 and drive gear 10 cooperation, thereby reach the purpose that dwang 7 decelerates, when the special needs adjustment cutting frequency, the electric current size of motor is controlled again this moment can, just so can be fine utilize ordinary motor structure to accomplish the cutting processing of the adjustable frequency of cutter 5.

Wherein, outer frame 14 is the right triangle structure, and the equal fixed mounting of three cylinder pole 17 is in the last lower extreme of outer frame 14 hypotenuse, and the one end of a dysmorphism section of thick bamboo 18 is protruding structure, and the printing plate of cutting is various, can appear the printing plate adhesion occasionally on the inclined plane, drives the work of third motor 20 this moment, and the motor drives a dysmorphism section of thick bamboo 18 and rotates, constantly shakes the processing to conveyer belt 13 surface to this smooth whereabouts of accomplishing the printing plate.

When the device is used, a printing plate moves from the right side of the cutter 5 device, at the moment, the first motor 11 is started and drives the driven gear 9 to rotate through the driving gear 10, the driven gear 9 controls the rotating rod 7 and the arc-shaped extrusion block 8 to rotate, the structure of the cutter shell 4 is subjected to seismic shock continuously in the rotating process, the cutter 5 is sequentially used for cutting the printing plate, the cut printing plate falls on the left end of the base table 1, at the moment, the second motor 16 is driven to work, the sweeping device 15 waves the printing plate at the upper end down through the rotating structure of the sweeping device, so that the inclined plane of the conveying belt 13 is smoothly come, generally, most of the printing plate basically and directly falls, the third motor 20 is driven to work by the third motor 20 through the belt 19, and the third motor 20 controls the three special-shaped cylinders 18 to work through the belt 19, so that the three special-shaped, thereby ensuring smooth dropping of the printing plate.

Example 2

In order to further reduce the damage caused by the printing plates during transport, the applicant has made further improvements to the apparatus.

As shown in fig. 7-8, an arc-shaped rack 21 is arranged on one side of the arc-shaped extrusion block 8, and a straight rack 22 matched with the arc-shaped rack 21 is arranged on the cutter shell 4; the bottom of the buffer device 3 is provided with a slide block 23, the slide block 23 drives the buffer device 3 above the slide block to slide in a chute 24 inside the supporting plate 2, one side of the slide block 23 is fixedly connected with a third spring 25, and the other end of the third spring 25 is fixedly connected with the end part of the chute 24.

In the process of cutting the printing plate, the arc-shaped extrusion block 8 is driven to rotate by the rotating rod 7, so that the arc-shaped extrusion block 8 is contacted with and extrudes the cutter shell 4 downwards, and the cutter shell 4 enables the cutter 5 to move downwards to cut off the printing plate; dwang 7 is when continuing to drive arc extrusion piece 8 and rotating, arc extrusion piece 8 makes cutter 5 keep cutting off the position height at printing plate place through extruding cutter shell 4, along with arc extrusion piece 8's rotation, arc rack 21 rotates to the position and straight rack 22 mesh mutually with straight rack 22 mesh mutually, because the diameter of arc rack 21's addendum circle equals with arc extrusion piece 8's diameter, behind arc rack 21 and straight rack 22 mesh, cutter 5 still keeps the position height at place when cutting off the printing plate.

Along with the rotating rod 7 drives the arc-shaped rack 21 to continue rotating, the rotating arc-shaped rack 21 drives the straight rack 22 to horizontally move forwards, the moving straight rack 22 drives the cutter 5 to move forwards through the cutter shell 4, and as the cutter 5 is connected with the lower sliding block 23 through the buffer device 3, the moving cutter 5 drives the sliding block 23 to move in the sliding groove 24 and extrude the third spring 25, so that the third spring 25 is compressed. In the moving process, the cutter 5 can horizontally move under the driving of the arc-shaped rack 21 and the straight rack 22 while keeping the height of the position where the printing plate is cut off, so that the cut printing plate is pushed forward by a distance L, and the distance L that the cut printing plate is pushed forward can be controlled by controlling the length of the arc-shaped rack 21 meshed with the straight rack 22. After the printing plate is pushed forward by the distance L, the arc-shaped rack 21 is separated from the straight rack 22, the third spring 25 restores elastic deformation and pushes the sliding block 23 to move, so that the buffer device 3, the cutter shell 4 above the buffer device and the cutter 5 return to the initial positions to prepare for next cutting of the printing plate. Through controlling the elastic coefficient of the third spring 25, on one hand, the arc-shaped extrusion block 8 is ensured to be in rotating contact with and extrude the cutter shell 4, and when the cutter 5 below the cutter shell 4 cuts off the printing plate, the third spring 25 cannot generate elastic deformation, so that the cutter 5 is prevented from cutting off the printing plate; on the other hand, when the arc-shaped rack 21 and the straight rack 22 are meshed to rotate and drive the cutter 5 and the buffer device 3 to move, the third spring 25 is extruded to generate elastic deformation, so that the cutter 5 can drive the cut printing plate to move forwards along the horizontal belt 1301, and preparation is made for the subsequent sweeping device 15 to drive the cut printing plate to move forwards.

By controlling the distance L and controlling the lengths of the clamping plate 153, the first spring 154 and the expansion plate 155 on the cleaning device 15, when the sponge cylinder 156 rotates to contact the horizontal belt 1301, the sponge cylinder 156 falls between the position where the printing plate is pushed and the position where the printing plate is cut, namely, the sponge cylinder 156 falls within the distance L on the horizontal belt 1301, the sponge cylinder 156 directly contacts the upper surface of the horizontal belt 1301, and in the process that the sponge cylinder 156 is driven and moves forward along the horizontal belt 1301, the sponge cylinder 156 contacts the printing plate after being cut and pushes the printing plate forward until the printing plate is pushed onto the inclined belt 1302, and then the rotating sponge cylinder 156 leaves the horizontal belt 1301 to prepare for pushing the printing plate after being cut next time.

In the present embodiment, the sponge cylinder 156 pushes the printing plate to move from the horizontal belt 1301 to the inclined belt 1302, and the sponge cylinder 156 directly contacts the upper surface of the horizontal belt 1301 and pushes the printing plate to the inclined belt 1302 during sliding of the upper surface of the horizontal belt 1301; compared with the embodiment 1 in which the sponge cylinder 156 presses on the printing plate and drives the printing plate and the horizontal belt 1301 to slide, rub and move forward on the inclined belt 1302, the printing plate can be better protected, damage to the printing plate and electronic elements above the printing plate is reduced, and the production quality of printing plate products is improved.

Example 3

After the cutter 5 is used for a long time, the cutter edge becomes dull, the arc-shaped extrusion block 8 is extruded and deformed, or the cutter shell 4 is extruded and deformed for a long time, so that the cutter 5 cannot cut off the printing plate; if the printing plate is not cut off, the subsequent normal use of the printing plate is affected, so the applicant further improves the device on the basis of the embodiment 2.

As shown in fig. 9, the sponge cylinder 156 includes an upper sponge part 1561 and a lower detection part 1562, the lower detection part 1562 is a conductor and has a positive electrode inside; a negative electrode is arranged in the conveying belt 13, specifically, the negative electrode is arranged in the horizontal belt 1301, and the horizontal belt 1301 is made of a conductive alloy material; a safety voltage is connected between the positive electrode and the negative electrode, and the safety voltage does not cause safety risks to human bodies. When the cutter 5 cuts off the printing plate, the sponge cylinder 156 rotates to be in contact with the horizontal belt 1301, the lower detection part 1562 on the sponge cylinder 156 is directly in contact with the horizontal belt 1301, the positive electrode in the sponge cylinder 156 is conducted with the negative electrode in the horizontal belt 1301, the conducted electric signal is transmitted into a controller of the printer, and the printer controls the cutter device to enable the cutter device to continue to work normally; when the cutter 5 does not cut off the printing plate, the sponge cylinder 156 rotates to the position above the horizontal belt 1301, the lower detection part 1562 of the sponge cylinder 156 is not contacted with the printing plate which is not cut off above the horizontal belt 1301, the positive electrode in the sponge cylinder 156 and the negative electrode in the horizontal belt 1301 cannot be conducted due to the fact that the printing plate has insulation property, no electric signal is transmitted into a controller of the printing machine, the controller controls the cutter device at the moment, the cutter device stops working, an alarm signal is sent out, and an operator is reminded to overhaul and replace related parts.

The arc-shaped extrusion block 8 and the arc-shaped rack 21 are movably connected with the rotating rod 7 and are fixed on the rotating rod 7 through countersunk bolts, and after the device is used for a long time, when the arc-shaped extrusion block 8 and the arc-shaped rack 21 are worn and the cutter 5 cannot smoothly cut off a printing plate, the arc-shaped extrusion block and the arc-shaped rack can be detached and replaced, so that the normal work of the cutter device is ensured, and the influence on the product quality is prevented; in a similar way, straight rack 22 and cutter shell 4 top looks swing joint, straight rack 22 passes through the countersunk head bolt fastening in cutter shell 4 top, uses this device for a long time after, when straight rack 22 wearing and tearing, when leading to cutter 5 can't cut off the printing plate smoothly, can dismantle the change to straight rack 22, guarantees that this cutters normally works, prevents to influence product quality.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims (8)

1. The utility model provides a cutters of SMT printing machine, includes base platform (1), its characterized in that: the utility model discloses a knife cutting machine, including base platform (1), two, movable joint, outer frame (14), bearing plate (2), buffer (3), two, the equal fixed mounting in top of bearing plate (2), two the inboard of buffer (3) is equipped with cutter shell (4), the bottom movable joint of cutter shell (4) has cutter (5), and the lower extreme fixed mounting of cutter shell (4) has a fitting bar (6), the top fixed mounting of base platform (1) has outer frame (14), the left upper end fixed mounting of base platform (1) has conveyer belt (13), the inside upper end fixed mounting of outer frame (14) has dwang (7), the outlying middle part fixed mounting of dwang (7) has arc extrusion piece (8), the left end fixed mounting of dwang (7) has driven gear (9), the bottom meshing of driven gear (9) has drive gear (10), a first motor (11) is fixedly installed on the left side of the driving gear (10), an arc-shaped rack (21) is arranged on one side of the arc-shaped extrusion block (8), a straight rack (22) matched with the arc-shaped rack (21) is arranged on the cutter (4), and the diameter of the addendum circle of the arc-shaped rack (21) is equal to that of the arc-shaped extrusion block (8); the rotating rod (7) drives the arc-shaped extrusion block (8) to rotate, so that the arc-shaped extrusion block (8) is contacted with and extrudes the cutter shell (4) downwards, and the cutter shell (4) enables the cutter (5) to move downwards to cut off the printing plate; when the rotating rod (7) continues to drive the arc-shaped extrusion block (8) to rotate, the arc-shaped rack (21) rotates to a position meshed with the straight rack (22) to be meshed with the straight rack (22), and the cutter (5) is still kept at the position height when the printing plate is cut off;

a sliding block (23) is arranged at the bottom of the buffer device (3), the sliding block (23) drives the buffer device (3) above the sliding block to slide in a sliding groove (24) in the supporting plate (2) for movement, a third spring (25) is fixedly connected to one side of the sliding block (23), and the other end of the third spring (25) is fixedly connected with the end part of the sliding groove (24);

the cleaning device (15) is fixedly mounted at the left end of the top of the base table (1), the cleaning device (15) comprises a driving rod (151), a sleeve (152) is sleeved on the periphery of the driving rod (151), a clamping plate (153) is fixedly welded on the right side of the sleeve (152), a first spring (154) is fixedly mounted on the left side of the inside of the clamping plate (153), an expansion plate (155) is fixedly mounted on the right side of the first spring (154), a sponge cylinder (156) is mounted on the right side of the expansion plate (155), and the driving rod (151) is fixedly mounted at the left end of the top of the base table (1); the sponge cylinder (156) comprises an upper sponge part (1561) and a lower detection part (1562), wherein the lower detection part (1562) is a conductor and is internally provided with a positive electrode; and a negative electrode is arranged in the conveying belt (13).

2. A cutter assembly for an SMT printing press according to claim 1, wherein: the equal fixed mounting in both ends at conveyer belt (13) top has spacing fence (12), outer frame (14) have been placed to the bottom of spacing fence (12), the right side fixed mounting of sweeping device (15) has second motor (16), the left side fixed mounting of outer frame (14) has three cylinder pole (17), and is three the equal fixed mounting in periphery of cylinder pole (17) has special-shaped section of thick bamboo (18), and two belts (19), lower extreme have been cup jointed in the left side of three cylinder pole (17) the right side fixed mounting of cylinder pole (17) has third motor (20).

3. A cutter assembly for an SMT printing press according to claim 1, wherein: the conveying belt (13) comprises an upper horizontal belt (1301) and a lower inclined belt (1302), and the horizontal belt (1301) is made of a conductive alloy material with a smooth surface; the inclined belt (1302) is made of rubber and has high friction force.

4. A cutter assembly for an SMT printing press according to claim 1, wherein: the arc-shaped extrusion block (8) and the arc-shaped rack (21) are movably connected with the rotating rod (7); the straight rack (22) is movably connected with the upper part of the cutter (4).

5. A cutter unit for an SMT printing press according to claims 1 and 2, wherein: buffer (3) including chassis (301), the middle part fixed mounting at chassis (301) top has guide bar (303), and the top fixed mounting of chassis (301) has first spring (302), the top fixed mounting of first spring (302) has top dish (304), the top fixed mounting of top dish (304) has supporting shoe (306), lifting ring (305) have been cup jointed to the upper end of guide bar (303), and the top fixed mounting of guide bar (303) has spacing dish (307), the bottom fixed mounting of chassis (301) is at the top of layer board (2).

6. A cutter assembly for an SMT printing press according to claim 1, wherein: the arc extrusion blocks (8) are arranged in a plurality of numbers, the bottoms of the arc extrusion blocks (8) are in contact with the top of the cutter (5), and the perimeter of the driven gear (9) is four times of that of a bearing of the driving gear (10).

7. A cutter unit for an SMT printing press according to any of claims 1 to 3, wherein: the outer frame (14) is of a right-angled triangle structure, the three cylindrical rods (17) are fixedly arranged at the upper, middle and lower ends of the bevel edge of the outer frame (14), and one end of the special-shaped cylinder (18) is of a convex structure.

8. A cutter assembly for an SMT printing press according to claim 1, wherein: when the cutter (5) cuts off the printing plate, the sponge cylinder (156) rotates to be in contact with the horizontal belt (1301), the lower detection part (1562) on the sponge cylinder (156) is directly in contact with the horizontal belt (1301), the positive electrode in the sponge cylinder (156) is communicated with the negative electrode in the horizontal belt (1301), and the cutter device continues to work normally; when the cutter (5) does not cut off the printing plate, the sponge cylinder (156) rotates to be above the horizontal belt (1301), the lower detection part (1562) of the sponge cylinder (156) is in contact with the printing plate which is not cut off above the horizontal belt (1301), the positive electrode in the sponge cylinder (156) and the negative electrode in the horizontal belt (1301) cannot be conducted, and the cutter device stops working.

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