CN216180950U

CN216180950U - Automatic cutting equipment

Info

Publication number: CN216180950U
Application number: CN202122531097.7U
Authority: CN
Inventors: 范长阳; 盛德春; 陈霖; 罗晓霞; 段柏均; 曾海明
Original assignee: Saargummi Chongqing Sealing System Co ltd; Sagumi Yingkou Sealing System Co ltd; Saargummi China Investment Co ltd; SaarGummi YuJin Chongqing Rubber and Plastic Product Co Ltd
Current assignee: Saargummi Chongqing Sealing System Co ltd; Sagumi Yingkou Sealing System Co ltd; Saargummi China Investment Co ltd; SaarGummi YuJin Chongqing Rubber and Plastic Product Co Ltd
Priority date: 2021-10-19
Filing date: 2021-10-19
Publication date: 2022-04-05
Anticipated expiration: 2031-10-19

Abstract

The utility model belongs to the field of sealing strip processing, and particularly discloses automatic cutting equipment which comprises a buffer mechanism, a conveying mechanism, a cutting mechanism, a positioning mechanism and a controller, wherein the conveying mechanism is used for conveying a sealing strip to the cutting mechanism, the cutting mechanism is used for cutting the sealing strip, and the controller is used for controlling the opening and closing of the cutting mechanism and the opening and closing of the conveying mechanism; the positioning mechanism comprises an infrared sensor in signal connection with the controller; the buffer mechanism is arranged on one side of the feeding end of the conveying mechanism and used for tensioning the sealing strip. By adopting the scheme of the utility model, the problem that the newly extruded sealing strip is accumulated on one side of the feeding end of the cutting mechanism because the conveying mechanism stops conveying the sealing strip during cutting, but the sealing strip is continuously extruded can be solved.

Description

Automatic cutting equipment

Technical Field

The utility model belongs to the field of sealing strip processing, and particularly relates to automatic cutting equipment.

Background

The automobile sealing strip is used for filling various gaps among automobile body components, plays the effects of shock absorption, water resistance, dust prevention, sound insulation and the like, and improves the comfort of driving experience. The automobile sealing strip is usually made of rubber and needs to be cut after being extruded and molded by the rubber, the existing cutting device comprises a conveying mechanism and a cutting mechanism, the extruded and molded sealing strip is conveyed to the cutting mechanism through the conveying mechanism to be cut, and then subsequent processing is carried out after the sealing strip is cut into a certain length, namely, the length of the cut sealing strip needs to be controlled within a certain range.

In the conveying process of the sealing strip, when the position needing to be cut reaches the cutting mechanism, the conveying mechanism needs to be closed, so that the sealing strip stops moving and is cut again, the conveying mechanism stops conveying the sealing strip, so that the sealing strip at the cutting mechanism is kept in a static state, but the sealing strip is continuously extruded, so that the newly extruded sealing strip is accumulated on one side of the feeding end of the cutting mechanism, and even the sealing strip at the cutting mechanism can be influenced.

In addition, the length of sealing strip is usually judged through the coding wheel with the sealing strip contact among the prior art, through the motion of sealing strip promptly, drive the coding wheel and rotate, through the number of turns of coding wheel pivoted, judge the length of sealing strip motion, and then control cutting mechanism cuts, nevertheless to avoid the sealing strip to pile up too much, after restart conveying mechanism, conveying mechanism's conveying speed is generally can be adjusted very fast, sealing strip moving speed is very fast this moment, and probably take place to skid between the coding wheel, lead to the length to the sealing strip to judge inaccurately, and then lead to the cutting inaccurate.

SUMMERY OF THE UTILITY MODEL

Aiming at the defects in the prior art, the utility model provides automatic cutting equipment to solve the problem that the length of a sealing strip is judged to be not accurate enough through an encoding wheel in the prior art.

In order to achieve the purpose, the utility model adopts the following technical scheme:

the automatic cutting equipment comprises a buffer mechanism, a conveying mechanism, a cutting mechanism, a positioning mechanism and a controller, wherein the conveying mechanism is used for conveying the sealing strips to the cutting mechanism, the cutting mechanism is used for cutting the sealing strips, and the controller is used for controlling the opening and closing of the cutting mechanism and the opening and closing of the conveying mechanism; the positioning mechanism comprises an infrared sensor in signal connection with the controller, and after a signal receiving end of the controller receives a detection signal of the infrared sensor, a signal output end of the controller is used for controlling the conveying mechanism to stop conveying and controlling the cutting mechanism to start cutting; the buffer mechanism is arranged on one side of the feeding end of the conveying mechanism and used for tensioning the sealing strip.

Compared with the prior art, the utility model has the following beneficial effects:

through the setting of infrared inductor, after detecting the sealing strip, stop to carry the sealing strip and start cutting mechanism and cut through controller control conveying mechanism, accomplish automatic cutting process. The end part of the sealing strip or the special mark point on the sealing strip is detected through the infrared sensor, so that the detection can be finished only by identifying the special mark point on the end part of the sealing strip or the sealing strip, the influence of the accumulation or conveying speed of the sealing strip is avoided, and the cutting accuracy of the sealing strip is improved.

Drawings

Fig. 1 is a schematic view of the overall structure of embodiments 1 and 3 of the present invention.

Fig. 2 is a schematic view of the overall structure of the buffer mechanism according to the embodiment of the present invention.

Fig. 3 is a schematic view of the overall structure of embodiment 2 of the present invention.

Fig. 4 is a right side view of the discharge mechanism and positioning mechanism of fig. 1.

Fig. 5 is a left side view of the positioning mechanism of fig. 3.

Fig. 6 is a schematic view of the overall structure of embodiment 4 of the present invention.

In the figure: 1. a sealing strip; 2. a conveying mechanism; 3. a cutting mechanism; 4. a second bracket; 5. a chute; 6. a material passing plate; 7. a second slider; 8. a first detector; 9. an infrared sensor; 10. a second detector; 11. a discharge plate; 12. a receiving platform; 13. a discharging table; 14. mounting a rod; 15. a discharge conveyor belt; 16. hinging a shaft; 17. a through hole; 18. scale lines; 19. positioning blocks; 20. a cavity bore; 21. a first bracket; 22. a slide rail; 23. a first slider; 24. a guide wheel; 25. an annular groove; 26. a balancing weight; 27. a wire rope; 28. mounting holes; 29. an arc-shaped frame; 30. a limiting wheel; 31. a limiting rod; 32. and a roller.

Detailed Description

The utility model is further described in detail below with reference to the accompanying drawings, and specific embodiments are given.

Example 1

As shown in fig. 1, the automatic cutting device includes a buffer mechanism, a conveying mechanism 2, a cutting mechanism 3, a positioning mechanism and a controller, the conveying mechanism 2 is used for conveying the sealing strip 1 to the cutting mechanism 3, the cutting mechanism 3 is used for cutting the sealing strip 1, the conveying mechanism 2 can be a conventional conveying belt or a conventional traction machine in the prior art, and the cutting mechanism 3 is a conventional cutting machine in the prior art. The controller is used for controlling the opening and closing of the cutting mechanism 3, the opening and closing of the conveying mechanism 2 and the conveying speed of the conveying mechanism 2, and the controller is conventionally controlled by a PLC program and the like in the prior art.

Buffer gear sets up in conveying mechanism 2's feed end one side, and buffer gear is used for tensioning sealing strip 1, and is concrete, combines fig. 2 to show, and buffer gear includes first support 21, and sliding connection has first slider 23 on first support 21, and is concrete, is fixed with on the first support 21 and supplies the gliding slide rail 22 of first slider 23, and first slider 23 sliding connection is on slide rail 22. Still install on first support 21 and be used for driving the gliding driving piece of first slider 23, it is connected with leading wheel 24 to rotate on the first slider 23, the ring channel 25 that supplies sealing strip 1 card to go into is seted up to leading wheel 24 outer wall, during the use, rethread conveying mechanism 2 carries and gets into cutting mechanism 3 behind the sealing strip 1 that will extrude forming after passing ring channel 25, leading wheel 24 is located between the extrusion device of conveying mechanism 2 and sealing strip 1 promptly, support the direction to sealing strip 1 between the two, it is spacing to sealing strip 1 through ring channel 25, avoid sealing strip 1 to break away from leading wheel 24. Sealing strip 1 gets into cutting mechanism 3 through conveying mechanism 2 after the direction of leading wheel 24, and conveying mechanism 2 stops carrying sealing strip 1 back, drives first slider 23 through the driving piece and slides, and first slider 23 drives leading wheel 24 motion, then lies in sealing strip 1 on the leading wheel 24 along with the change of leading wheel 24 position, and the tensioning gradually avoids sealing strip 1 to pile up.

The driving part is specifically set as: the driving part comprises a balancing weight 26 connected to the first support 21 in a sliding manner along the vertical direction, the balancing weight 26 and the first sliding block 23 are respectively arranged at two sides of the first support 21, a steel wire rope 27 is fixed between the balancing weight 26 and the first sliding block 23, a mounting hole 28 for the steel wire rope 27 to pass through is arranged at the top of the first support 21, a roller 32 is rotatably connected in the mounting hole 28, the steel wire rope 27 passes through the upper side of the roller 32, the movement of the steel wire rope 27 is facilitated by the arrangement of the roller 32, the balancing weight 26 can be arranged to be heavier, pressure can be applied to the balancing weight 26 by external factors such as air pressure, and in the action force movement process of the conveying mechanism 2, the sealing strip 1 has a certain pressing action force on the guide wheel 24, so that the height of the guide wheel 24 is within a constant height range, after the conveying mechanism 2 stops conveying, the pressure of the sealing strip 1 on the guide wheel 24 is reduced, the counterweight block 26 slides downwards under the action of self-gravity, and then the first sliding block 23 is pulled to move upwards through the steel wire rope 27, and the sealing strip 1 is tensioned. In the actual machining process, the first slide block 23 can also be driven to slide by a conventional driving mode such as an air cylinder.

Buffer gear still carries out spacing locating part to sealing strip 1 when first slider 23 slides, through the setting of locating part, when avoiding sealing strip 1 along with leading wheel 24 position change, the sealing strip 1 perk of leading wheel 24 feed side and discharge side both sides or amplitude of motion great thereupon. The limiting part is specifically set as: the locating part is equipped with two sets ofly and is located the both sides of first support 21 respectively, and the locating part is including fixing arc frame 29 on first support 21 and rotating the spacing wheel 30 of connecting on arc frame 29, and spacing wheel 30 is equipped with a plurality ofly and distributes along the length direction of arc frame 29. In this embodiment, use vertical sliding connection of first slider 23 to take the example on first support 21, arc frame 29 is located the lower part of first support 21, and the arc of arc frame 29 is sunken upwards, sealing strip 1 loops through the arc frame 29 below of leading wheel 24 feeding side, the leading wheel 24 upside, the arc frame 29 below of leading wheel 24 discharge side, through two arc frames 29 promptly, the upwards motion of sealing strip 1 of restriction leading wheel 24 both sides, and sealing strip 1 is located the leading wheel 24 upside, then during the upwards motion of leading wheel 24, sealing strip 1 tensioning. Through the rotation of spacing wheel 30 and leading wheel 24, reduce the friction that produces when sealing strip 1 moves, avoid leaving the mar on sealing strip 1 surface.

In the actual processing process, the arc frame 29 can also be arranged at the upper part of the first support 21, the arc recess faces downwards, the sealing strip 1 passes through the lower side of the guide wheel 24, when the guide wheel 24 moves downwards, the sealing strip 1 is tensioned, and according to the actual processing condition, the sliding direction of the first sliding block 23 can also be transverse or oblique, so long as the first sliding block 23 drives the guide wheel 24 to move in the direction away from the arc frame 29, the sealing strip 1 can be tensioned.

A plurality of L-shaped limiting rods 31 are fixed on the arc-shaped frame 29, and a channel for the sealing strip 1 to pass through is formed between the limiting rods 31 and the arc-shaped frame 29. In this embodiment, for example, the arc-shaped recess of the arc-shaped frame 29 faces upward, and the sealing strip 1 passes through the lower portion of the arc-shaped frame 29, then a channel formed between the limiting rod 31 and the arc-shaped frame 29 is located on the lower side of the arc-shaped frame 29, and the sealing strip 1 passes through the channel to limit the sealing strip 1 to a certain extent.

In order to reduce the friction between the limiting rod 31 and the sealing strip 1, the limiting rod 31 is specifically set as follows: the limiting rod 31 comprises a vertical rod fixed on the arc-shaped frame 29 and a cross rod rotatably connected to the end of the vertical rod, the cross section of the cross rod is circular, and the axis of the cross rod is parallel to the axis of the limiting wheel 30. That is, when the weather strip 1 passes between the stopper rod 31 and the arc frame 29, the friction between the weather strip 1 and the stopper rod 31 is reduced by the rotation of the cross bar.

The positioning mechanism comprises a first detector 8, an infrared inductor 9 and a second detector 10 which are sequentially arranged along the conveying direction of the sealing strip 1 and are all in signal connection with the controller, and the infrared inductor 9, the first detector 8 and the second detector 10 are all conventional infrared inductors in the prior art. In this embodiment, the positioning mechanism is disposed on one side of the discharge end of the cutting mechanism 3, the first detector 8 is disposed on one side close to the cutting mechanism 3, the infrared sensor 9, the first detector 8, and the second detector 10 are all used for detecting the end portion of the sealing strip 1, that is, the sealing strip 1 reaches the positioning mechanism after passing through the cutting mechanism 3 in the process of moving along with the conveying mechanism 2, and the infrared sensor 9, the first detector 8, and the second detector 10 can detect the end portion of the sealing strip 1.

After a signal receiving end of the controller receives a detection signal of the first detector 8, a signal output end of the controller is used for controlling the conveying mechanism 2 to reduce the conveying speed, so that the follow-up conveying mechanism 2 is better controlled to stop conveying, and the phenomenon that the movement distance of the sealing strip 1 is too long in a time difference from the sending of an instruction for closing the conveying mechanism 2 caused by the fact that the conveying speed of the conveying mechanism 2 is too high to the complete stop of the conveying mechanism 2 is avoided.

After the signal receiving end of the controller receives the detection signal of the infrared sensor 9, the signal output end of the controller is used for controlling the conveying mechanism 2 to stop conveying and controlling the cutting mechanism 3 to start cutting. In the actual production process, the controller can judge whether the cutting is finished through a timing program, for example, the time length for stopping the conveying of the conveying mechanism 2 is set to t seconds, after t seconds, the cutting mechanism 3 is closed, and the conveying mechanism 2 is restarted.

The second detector 10 is used for outputting an unqualified sealing strip 1 cutting signal, within the time difference from the signal sent by the infrared sensor 9 to the complete stop of the conveying mechanism 2, the movable range of the end part of the sealing strip 1 needs to be located between the infrared sensor 9 and the second detector 10, namely, the sealing strip is a qualified product, if the end part of the sealing strip 1 moves to reach the second detector 10, the second detector 10 sends a signal when detecting the sealing strip 1, namely, the cutting position of the sealing strip 1 deviates from the cutting mechanism 3 by too large distance, and the sealing strip is an unqualified product. In the actual production process, after the second detector 10 detects the end part of the sealing strip 1, a signal for the worker to know can be sent out, namely, the worker can know by adopting various prompt modes such as the prompt lamp in the prior art flickering, the alarm making sound, the Bluetooth connection to the mobile phone end or the computer end prompt and the like.

The signal transmission modes and principles between the controller and the infrared sensor 9, the first detector 8, the second detector 10, the conveying mechanism 2, and the cutting mechanism 3 are conventional program control technologies, and are not described in detail in this embodiment.

Example 2

The difference between this embodiment and embodiment 1 lies in that the mounting position of the positioning mechanism is different, as shown in fig. 3, in this embodiment, the positioning mechanism is located on one side of the feeding end of the cutting mechanism 3, the positioning mechanism further includes a second support 4 and three material passing plates 6 respectively used for mounting the infrared sensor 9, the first detector 8 and the second detector 10, the material passing plates 6 are slidably connected to the second support 4, specifically, the second support 4 is provided with a chute 5, the chute 5 is slidably connected to a second slider 7, the material passing plates 6 are fixed to the second slider 7, and by the sliding of the material passing plates 6, the distance between the infrared sensor 9, the first detector 8, the second detector 10 and the cutting mechanism 3 can be adjusted, and further, the cutting position of the sealing strip 1 is adjusted.

Combine shown in fig. 6, cross and offer the through-hole 17 that supplies sealing strip 1 to pass through on the flitch 6, detachable connection has locating piece 19 in the through-hole 17, it is concrete, locating piece 19 bolted connection is in through-hole 17, set up the die cavity hole 20 that supplies sealing strip 1 to pass through on the locating piece 19, in the actual course of working, the cross sectional shape size of die cavity hole 20 needs and the shape size phase-match of sealing strip 1 cross-section, carry on spacingly to sealing strip 1 better, and locating piece 19 detachable connection, when processing the sealing strip 1 of different models promptly, can change locating piece 19.

Infrared inductor 9, first detector 8, second detector 10 all sets up and to dismantle the connection on crossing flitch 6, and is concrete, infrared inductor 9, first detector 8, the equal bolted connection of second detector 10 is on crossing flitch 6, it is equipped with scale mark 18 to go up along through-hole 17 circumference on flitch 6 to cross, through scale mark 18 and infrared inductor 9, first detector 8, the setting dismantled of second detector 10, be convenient for adjust infrared inductor 9, first detector 8, the position of second detector 10.

In this embodiment, the infrared sensor 9, the first detector 8, and the second detector 10 are all disposed on one side of the feeding end of the cutting mechanism 3, and the second detector 10 is located on one side close to the cutting mechanism 3, that is, the infrared sensor 9, the first detector 8, and the second detector 10 detect the rear end of the cutting position of the sealing strip 1, for some sealing strips 1 of special models, the detection may be inaccurate by the way of end detection, so that a special mark can be made on the sealing strip 1 (or the sealing strip 1 itself has a special mark point), thereby detecting on one side of the feeding end of the cutting mechanism 3, and since the positions of the special mark on the sealing strips 1 of different models may be different, the positions of the infrared sensor 9, the first detector 8, and the second detector 10 need to be adjusted according to the actual processing conditions.

Example 3

This embodiment is on the basis of embodiment 1, still be equipped with discharge mechanism, discharge mechanism includes qualified passageway and unqualified passageway, after the signal reception end of controller accepted the detected signal of second detector 10, the controller is used for controlling unqualified passageway to open, it is concrete, combine shown in fig. 4, discharge mechanism includes ejection of compact platform 13 and articulates ejection of compact board 11 on ejection of compact platform 13, the tip of ejection of compact board 11 is located the below of the cutting blade of cutting mechanism 3, ejection of compact board 11 can support sealing strip 1 promptly, ejection of compact board 11 side is fixed with articulated shaft 16, articulated shaft 16 rotates to be connected on ejection of compact platform 13, be fixed with on the ejection of compact platform 13 and be used for driving articulated shaft 16 pivoted motor.

Qualified passageway is including setting up the material platform 12 that connects in ejection of compact board 11 below, unqualified passageway is including setting up discharge conveyor 15 on ejection of compact board 11, in the actual installation, discharge conveyor 15's tip also is located cutting mechanism 3's cutting blade's below to avoid discharge conveyor 15 to bulge ejection of compact board 11's upper end and influence the transport of sealing strip 1, after the signal reception part of controller accepted the detected signal of second detector 10, the controller was used for controlling discharge conveyor 15 and opens. That is, in the present embodiment, when the second detector 10 detects the end of the sealing tape 1, the discharging conveyor 15 is opened to convey the sealing tape 1 forward.

The second detector 10 does not detect the end of the sealing strip 1, and can drive the hinge shaft 16 to rotate through the motor (how to start the motor, which can be achieved by conventional technical means in the prior art, or by setting a corresponding control program (for example, after the cutting is judged to be completed, that is, after the conveying mechanism 2 stops conveying for t seconds, the cutting mechanism 3 is closed, and when the conveying mechanism 2 is restarted, the motor is controlled to move through the controller at the same time), which is not described in detail in this embodiment), after the discharging plate 11 deflects, the sealing strip 1 slides onto the receiving table 12. In this embodiment, sealing strip 1 after will cutting is discharged through qualified passageway or unqualified passageway, and then distinguishes qualified sealing strip 1 and unqualified sealing strip 1.

In order to adjust the distance between the infrared sensor 9, the first detector 8, the second detector 10 and the cutting mechanism 3 conveniently, the receiving table 12 is connected with three mounting rods 14 which are respectively used for mounting the infrared sensor 9, the first detector 8 and the second detector 10 in a sliding manner, and the infrared sensor 9, the first detector 8 and the second detector 10 are all fixed at the upper end of the mounting rod 14 and face the discharging conveyor belt 15.

Example 4

As shown in fig. 5, in this embodiment, two sets of positioning mechanisms are provided, and the two sets of positioning mechanisms are respectively located on the feeding end side and the discharging end side of the cutting mechanism 3, and the positioning mechanism located on the discharging end side of the cutting mechanism 3 is set with reference to embodiment 1 or embodiment 3 without modification. On the basis of embodiment 2, as shown in fig. 6, the connection mode of the material passing plate 6 and the second slider 7 is different, the material passing plate 6 is hinged to the second slider 7, the axial direction of the hinged point of the material passing plate 6 and the second slider 7 is parallel to the sliding direction of the second slider 7, and the material passing plate 6 is hinged to the second slider 7, so that the material passing plate 6 can deflect relative to the second slider 7, that is, when the material passing plate 6 is in a horizontal state, the sealing strip 1 enters the cutting mechanism 3 through the material passing plate 6, after the material passing plate 6 deflects at a certain angle, the sealing strip 1 does not need to pass through the material passing plate 6, and in an actual processing process, the connection position of the material passing plate 6 and the second slider 7 is designed according to the structural arrangement of the second support 4, that is, the spatial range in which the material passing plate 6 can deflect.

In this embodiment, on same automatic cutout equipment, set up two sets of positioning mechanism, satisfy two kinds of location demands, according to the actual processing condition, add man-hour, choose for use one of them a set of positioning mechanism to use can. And when selecting for use the positioning mechanism who is located 3 discharge end one sides of cutting mechanism, for avoiding being located 3 feed end one side of cutting mechanism's positioning mechanism's flitch 6 of crossing to influence the motion of sealing strip 1, can rotate and cross flitch 6 for sealing strip 1 need not pass through flitch 6.

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.

Finally, the above embodiments are only for illustrating the technical solutions of the present invention and not for limiting, although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions may be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all of them should be covered in the claims of the present invention.

Claims

1. Automatic cutting equipment, its characterized in that: the sealing strip cutting device comprises a buffer mechanism, a conveying mechanism, a cutting mechanism, a positioning mechanism and a controller, wherein the conveying mechanism is used for conveying the sealing strips to the cutting mechanism, the cutting mechanism is used for cutting the sealing strips, and the controller is used for controlling the opening and closing of the cutting mechanism and the opening and closing of the conveying mechanism;

the positioning mechanism comprises an infrared sensor in signal connection with the controller, the infrared sensor is used for detecting the position of the sealing strip, and after a signal receiving end of the controller receives a detection signal of the infrared sensor, a signal output end of the controller is used for controlling the conveying mechanism to stop conveying and controlling the cutting mechanism to start cutting;

the buffer mechanism is arranged on one side of the feeding end of the conveying mechanism and used for tensioning the sealing strip.

2. The automatic cutting apparatus according to claim 1, wherein: the positioning mechanism further comprises a first detector and a second detector which are in signal connection with the controller, and the first detector, the infrared sensor and the second detector are sequentially arranged along the conveying direction of the sealing strip; after a signal receiving end of the controller receives a detection signal of the first detector, a signal output end of the controller is used for controlling the conveying mechanism to reduce the conveying speed; the second detector is used for outputting a sealing strip cutting failure signal.

3. The automatic cutting apparatus according to claim 2, characterized in that: the positioning mechanism is arranged on one side of the feeding end of the cutting mechanism, the positioning mechanism further comprises three material passing plates which are respectively used for mounting the infrared inductor, the first detector and the second detector, through holes for the sealing strips to pass through are formed in the material passing plates, and the infrared inductor, the first detector and the second detector are all detachably connected to the material passing plates; and scale marks are arranged on the material passing plate along the circumferential direction of the through hole.

4. The automatic cutting apparatus according to claim 2, characterized in that: the automatic discharging device is characterized by further comprising a discharging mechanism, the discharging mechanism comprises a discharging platform, a qualified channel and an unqualified channel, the qualified channel comprises a discharging plate hinged on the discharging platform and a receiving platform arranged below the discharging plate, the unqualified channel comprises a discharging conveyor belt arranged on the discharging plate, and after a signal receiving end of the controller receives a detection signal of the second detector, the controller is used for controlling the discharging conveyor belt to be opened.

5. The automatic cutting apparatus according to claim 4, wherein: positioning mechanism sets up in exit conveyor's top, and infrared inductor, first detector, second detector are used for detecting the tip of sealing strip, and the equal sliding connection of infrared inductor, first detector, second detector connects on the material platform.

6. The automatic cutting apparatus according to claim 1, wherein: the buffer mechanism comprises a first bracket, a first sliding block is connected to the first bracket in a sliding manner, a driving piece for driving the first sliding block to slide is further installed on the first bracket, a guide wheel is connected to the first sliding block in a rotating manner, and an annular groove for clamping the sealing strip is formed in the outer wall of the guide wheel; the sealing strip positioning device further comprises a limiting part used for limiting the sealing strip when the first sliding block slides.

7. The automatic cutting apparatus of claim 6, wherein: the limiting parts are provided with two groups and are respectively positioned at two sides of the first support, each limiting part comprises an arc-shaped frame fixed on the first support and a limiting wheel rotatably connected to the arc-shaped frame, and the limiting wheels are provided with a plurality of limiting wheels which are distributed along the length direction of the arc-shaped frame; first slider is along vertical sliding connection on first support, and the arc is put up the lower part that is located first support, and the arc of arc is sunken upwards.

8. The automatic cutting apparatus of claim 6, wherein: the driving piece comprises a balancing weight connected to the first support in a vertical sliding mode, the balancing weight and the first sliding block are located on two sides of the first support respectively, a steel wire rope is fixed between the balancing weight and the first sliding block, and a mounting hole for the steel wire rope to penetrate through is formed in the top of the first support.

9. The automatic cutting apparatus of claim 7, wherein: a plurality of L-shaped limiting rods are fixed on the arc-shaped frame, and a channel for the sealing strips to pass through is formed between each limiting rod and the arc-shaped frame.

10. The automatic cutting apparatus of claim 9, wherein: the limiting rod comprises a vertical rod fixed on the arc-shaped frame and a transverse rod rotatably connected to the end of the vertical rod, the cross section of the transverse rod is circular, and the axis of the transverse rod is parallel to the axis of the limiting wheel.