CN217172667U - Deviation correcting device of bag making machine - Google Patents

Abstract

The utility model discloses a deviation correcting device of system bag machine, including frame, detection mechanism, control mechanism, swing mechanism, the deflector roll of rectifying. The convenient bag is made of the edge inserting film, and as for the edge inserting film with the same specification, the relative positions of two edge inserting plates arranged above the film blowing machine are unchanged, so that the relative distance between two edge inserting lines between edge inserting areas (four areas) at two sides and two middle areas is almost unchanged although the width of a plastic film is narrowed due to materials, air elimination and the like in the film blowing process. According to the rule of the edge inserting film, the four-layer area and the two-layer area of the edge inserting film are identified by the sensor capable of identifying the thickness, and the trend of the edge inserting film is controlled according to the signal, so that the two-layer area keeps moving in the middle, and the problem that a handle of a convenient bag is easy to punch and deflect due to the change of the width of the edge inserting film is solved.

Description

Deviation correcting device of bag making machine

Technical Field

The utility model relates to a deviation correcting device of system bag machine.

Background

The utility model relates to a bag machine is a plastics convenience bag system bag machine, cut system bag machine or even back of the body system bag machine including the heat-seal, the convenience bag just be the portable convenience bag that has two handle states of general use among people's daily life, also call shopping bag, insert limit bag, undershirt bag etc..

The convenience bag is made of the edge inserting film, and for the convenience of understanding, the forming process of the edge inserting film is generally described in the application with reference to fig. 8, 9 and 10. As shown in fig. 8: the plastic particle raw material can be continuously blown out from the die orifice of the film blowing machine 6 by heating and extruding of the screw rod to blow a cylindrical plastic cylindrical film 50, the cylindrical film 50 is filled with gas with certain pressure, the pressure of the gas determines the diameter of the cylindrical film 50, namely the width of the plastic film 50, under the condition of the same feeding amount, the larger the pressure in the cylinder is, the smaller the thickness of the plastic film 50 is, the larger the diameter of the cylindrical film is, and vice versa; two edge inserting plates 61 are arranged at the position of about one meter above the die orifice of the film blowing machine 6, the two edge inserting plates 61 are positioned at the two sides of the cylindrical film 50 and are inserted into the cylindrical film to a certain depth, the two sides of the cylindrical plastic film are folded into four layers after the cylindrical plastic film is inserted and folded by the two edge inserting plates 61, the middle two layers are formed, and the cross section of the cylindrical plastic film is in the state shown in fig. 9; then the film is wound into a film roll with larger diameter after being extruded by a clamping plate 62 on the film blowing machine and wound by a winding device. Since the plastic film thus produced is folded at both side positions by the edge-insertion plate 61 toward the center, four layers, i.e., a four-layer region 52, also referred to as an edge-insertion region, are formed on both sides of the plastic film, and a two-layer region 51 is formed in the center. The plastic film with four layers at two sides and two layers in the middle is called a trimming film; the boundary line between the four-layer region 52 and the two-layer region 51 of the edge-inserting film is referred to as an edge-inserting line 53. In terms of the film blowing process and characteristics of the blow molding machine: the diameter (width) of the blown plastic film is greatly influenced by the air pressure in the film cylinder, the external environment temperature and the property of the material, the width of the plastic film is not always consistent, particularly after the plastic forbidden order is issued in the state in recent years, the traditional plastic raw material is gradually eliminated, and the substitute is a full-biodegradable material. In the process of producing the degradable shopping convenient bag by adopting the fully biodegradable material, because of the self characteristics of the biodegradable material such as large specific gravity, large elasticity, poor tensile strength and the like, the phenomena of air leakage and air elimination are easy to occur in the film blowing process, the diameter of a film cylinder is small, the total width of the plastic film is small, but the width of the middle two-layer area 51 is not changed generally, namely the relative distance and the position of two adjacent lines 53 are basically unchanged, and the changed width is only the width of the four-layer areas 52 at two sides.

In terms of bag making: the working process comprises two aspects of sealing and cutting, wherein the sealing and cutting device cuts or breaks the edge inserting film into a section of rectangular film section, then the two ends of the rectangular film section are heated and sealed to form a sealing line 55, then a W-shaped notch 56 similar to the W-shaped notch is cut at one end of the rectangular film section, so that the convenient bag shown in figure 10 is formed, and two handles 54 of the plastic convenient bag are formed at one end of the four layer area 52 of the edge inserting film.

In the bag making process, a film roll of the edge inserting film is rotatably arranged at one end of a rack of the bag making machine, a sealing and cutting mechanism and a notching device are arranged at the other end of the rack, a plurality of guide rollers are arranged between the film roll and the sealing and cutting mechanism and between the film roll and the notching device, and the edge inserting die released from the film roll enters the sealing and cutting device and the notching device through the plurality of guide rollers. The centers of the guide rollers and the center of the punching knife of the punching device correspond to each other front and back, and theoretically, the punching knife of the punching device can cut the inserted edge in the center by only walking from the guide rollers in the center to form a convenient bag with two symmetrical left and right handles 54 and the same width. However, the edge inserting film is influenced by factors such as external environment temperature and air pressure in the cylinder in the production process, the situations of thick edge and thin edge and narrow width are avoided, the phenomenon of left-to-right drift is easy to occur in the bag making process, particularly in the conveying and walking process of the edge inserting film, and the situation of edge inserting film deviation is inevitable. In view of the above situation, the applicant has tried to arrange sensors on one side or both sides of the edge insertion film respectively and then control the deviation rectifying mechanism to rectify the deviation, but even if the sensors can detect the situation that one side of the plastic film becomes narrow, the deviation rectifying device can be driven by the control system to rectify the trend of the plastic film, only one side of the plastic film can be aligned, although the deviation rectifying effect is certain, the center line of the width of the plastic film cannot be corresponding to the center line of the punching knife, and the situation that the bag handle is convenient to punch cannot be fundamentally solved.

SUMMERY OF THE UTILITY MODEL

The utility model discloses the technical problem that will solve is: a deviation correcting device of a bag making machine is arranged in an input path of an edge inserting film, and provides a deviation correcting device of a bag making machine, which is simple and compact in structure and stable and reliable in work.

In order to realize the technical purpose, the technical proposal of the utility model is that: the utility model provides a deviation correcting device of system bag machine which characterized in that: including frame, detection mechanism, control mechanism, swing mechanism, the deflector roll of rectifying, detection mechanism include sensor, adjusting part, set up and insert the position that the limit membrane corresponds, the deflector roll of rectifying with swing mechanism connect, swing mechanism be connected with the controller.

The sensor can be arranged on one side or two sides of the edge inserting film, and can also be arranged at the position of an edge inserting line between the four-layer area and the two-layer area of the edge inserting film.

Preferably, the sensor is arranged at a position corresponding to the position between the four-layer region and the two-layer region of the edge inserting film. The method is used for identifying the four-layer area and the two-layer area of the edge inserting film.

As a further improvement, the sensor is a thickness-identifying photosensor. The position of the plug edge line in the four-layer area or the two-layer area is identified through detecting the thickness of the edge inserting film, and an identification signal is transmitted to the controller through a lead. The advantages of this embodiment are: even if the edge inserting die with the width being gradually widened and gradually narrowed and the width being uneven comprises the full biodegradable film, the centering correction can be realized, namely the center line between the two edge inserting lines is basically consistent with the center line of the punching knife. The embodiment is particularly suitable for the production of degradable convenient bags.

As another embodiment of the sensor, the sensor is a proximity switch or an electro-optical proximity switch. The two sets of sensors are respectively arranged on two sides of the edge inserting film, and when the plastic film cannot be detected by the sensor on one side (when the edge inserting film is narrowed), a detection signal is fed back to the controller, so that the controller controls the swinging mechanism to swing, and the edge inserting film is close to the position of the sensor on the side. This embodiment is characterized by being suitable for plastic films of which the width does not vary much.

As a preferable technical solution, the swing mechanism includes various embodiments such as an electric sliding table, an electric cylinder, a screw pair driven by a motor, and the like. The deviation correcting guide roller is used for driving the deviation correcting guide roller to swing up and down or left and right, so that the deviation correcting guide roller is in an inclined state, and the technical purpose of deviation correction is realized by changing the trend of the edge inserting film.

The adjusting component is a mechanism which can be used for adjusting the position by moving the sensor left and right so as to keep the position corresponding to the detection point of the edge inserting film.

As a preferable technical scheme, the adjusting assembly comprises a sliding seat and a sliding rod. The sliding rod can be a rod-shaped body such as a square or a hexagon, and can also be a linear guide rail which is arranged at a position corresponding to the edge inserting film; the sliding seat is arranged on the sliding rod in a sliding mode, and the sensor is arranged on the sliding seat.

As another embodiment of the adjusting component, the adjusting component is a swing rod, one end of the swing rod is hinged to the frame, the other end of the swing rod is provided with a sensor, and the sensor corresponds to the detection position of the edge inserting film by pushing the swing rod.

The controller is an electronic product, the input end of the controller is connected with the sensor through a lead, the output end of the controller is connected with the swinging mechanism through a lead and used for receiving signals of the sensor, then logical operation is carried out, and the signals fed back by the sensor are changed into a control unit for controlling the working instructions of the swinging mechanism through a preset program. The controller can control the starting and stopping, the forward and reverse rotation of the motor, and can also control the electromagnetic valve to open or release the air cylinder. The controller is widely used, is sold in the market and on the Taobao net, and belongs to the known technology.

As a preferred technical scheme, the swing mechanism comprises a motor, a screw rod and a screw rod nut, the screw rod is connected to the motor, and the motor is installed on the rack.

As a further improvement, the shape of the lead screw nut is similar to a rectangle and can slide on a rack provided with a square hole, and one end of the deviation-rectifying guide roller is arranged on the rectangular nut and can be lifted or declined along with the up-and-down movement of the nut.

In yet another embodiment, the lead screw nut is connected to a slide block, the slide block is connected to a guide rail, and the guide rail is arranged on the frame.

As another embodiment of the swing mechanism, the swing mechanism is an air cylinder, the air cylinder is connected with an electromagnetic valve, the electromagnetic valve is connected with a controller, and a cylinder rod extends out or releases under the control of the electromagnetic valve so as to drive the deviation-correcting guide roller to swing, thereby realizing the technical effect of deviation correction.

The deviation-correcting guide roller is arranged in an input path of the edge-inserting film of the bag making machine, has the guiding function of a common guide roller, and has the function of changing the trend of the edge-inserting film under the driving of the swing mechanism. One end of the deviation rectifying guide roller can be hinged to the rack and can also be placed on the U-shaped fixing block, when the swing mechanism raises or lowers the other end of the deviation rectifying guide roller, the deviation rectifying guide roller can be in an inclined state, so that the trend of the edge inserting film can be changed, and the technical purpose of deviation rectification is realized.

As another embodiment of the deviation-rectifying guide rollers, the deviation-rectifying guide rollers are two, the two deviation-rectifying guide rollers are rotatably arranged on the square supporting plate, the supporting plate is connected to the swinging mechanism, and when the supporting plate rotates left and right under the driving of the swinging mechanism, the two deviation-rectifying guide rollers on the supporting plate are driven to swing back and forth or left and right, so that the technical purpose of deviation rectification is achieved by changing the trend of the edge-inserting film.

The utility model has the advantages that: firstly, when a bag is made by adopting an edge inserting film with uniform width, a sensor arranged on one side or two sides of the edge inserting film controls and drives a swing mechanism by detecting whether the edge of the edge inserting film is in place, so that the central position of the edge inserting film corresponds to the central position of a punching knife, and the technical effect of deviation correction is realized; secondly, aiming at the condition that the plastic film is easily affected by a plurality of factors in the production process to cause different widths, the invention discovers the following rule through analysis and exploration: in the case of producing edge-inserting plastic films of the same width type, because the relative positions of the two edge-inserting plates arranged on the two sides above the film blowing machine are fixed and do not change, even if the total width of the blown plastic film changes, the width of the two-layer area in the middle of the edge-inserting film is almost unchanged, namely the positions of the two edge-inserting lines are unchanged, and the relative distance between the two edge-inserting lines is basically unchanged. According to the rule, the swing mechanism is controlled by detecting the position of the edge inserting line between the four-layer area and the two-layer area, the deviation correcting guide roller is driven to intervene the trend of the edge inserting film, the center between the two edge inserting lines is enabled to be in front-back correspondence with the center of the punching knife, the purpose of center punching is achieved, the two handles of the punched convenient bag are consistent in size, and the bearing capacity of the convenient bag is improved. Thirdly, for the environment-friendly convenient bag produced by adopting the biodegradable material, although the phenomena of air leakage and air elimination are easy to occur in the film blowing process, so that the width of the edge inserting film is suddenly widened and narrowed, and the two handles of the convenient bag are deviated, after the edge inserting line is taken as a detection target, although the total width of the edge inserting film is not always consistent, the central positions of the two edge inserting lines of the edge inserting film are kept corresponding to the center of the punching knife, one handle is not washed away, the width consistency of the two handles can be ensured to the maximum extent, the qualification rate of products is improved, the biodegradable material replaces the traditional plastic raw material, and the environment-friendly convenient bag is pushed to the market and provides technical support and equipment support.

Drawings

Fig. 1 is a schematic view of the structure principle of the present invention;

FIG. 2 is a schematic structural cross-sectional view of a film for edge deletion;

FIG. 3 is a front view of the first embodiment;

FIG. 4 is a right-side schematic view of the first embodiment;

FIG. 5 is a schematic top view of the first embodiment;

FIG. 6 is a schematic structural diagram of the second embodiment;

FIG. 7 is a schematic structural diagram of the third embodiment;

FIG. 8 is a schematic view of the formation and production process of the edge-plugging film;

FIG. 9 is a schematic cross-sectional view of the formation of a border film;

FIG. 10 is a schematic diagram of the formation and structure of a convenient bag.

In the figure: 1- -a frame; 11- -U shaped fixed block; 12- -sliding port; 2- -a sensor; 21-proximity switch; 22- -a slide bar; 23- -a slide; 3- -deviation correcting guide roller; 31- -pin axis; 4- -an electric machine; 41- -screw rod; 42- -feed screw nut; 43- -a pallet; 44- -a stepper motor; 45- -air cylinder; 50- -cylindrical membrane; 51- -two zone areas; 52- -four layer zone; 53- -edge insertion line; 54- -a handle; 55-sealing the wire; 56- -W type gap; 6- -film blowing machine; 61- -edge strip; 62- -a clamp plate; 7- -controller.

Detailed Description

In order to describe the invention more specifically, it is further described in detail below by way of three embodiments in conjunction with the attached drawings.

In the first embodiment, as shown in fig. 3, 4 and 5: the sensor 2 of the first embodiment is a photoelectric thickness sensor, which identifies the thickness of the object to be measured by the length of light wave refraction (an ultrasonic thickness sensor or a capacitance thickness sensor can also be used); the adjusting component comprises a sliding seat 23 and a sliding rod 22, and the sliding rod 21 is a square guide rail; the swing mechanism comprises a motor 4, a screw rod 41 and a nut slider 42. A motor 4 is arranged on one side of a frame 1, a screw rod 4 is connected to a motor shaft of the motor 4, a screw rod nut 42 is arranged on the screw rod 4, the appearance of the screw rod nut 42 is set to be rectangular, a U-shaped groove is also arranged on one side of the rectangular screw rod nut 42, a sliding opening 12 capable of enabling the screw rod nut 42 to slide up and down is arranged on the position, corresponding to the screw rod nut 42, of the frame 1, and the screw rod nut 42 is embedded in the sliding opening 12 in a sliding mode; a U-shaped fixed block 11 is arranged on the other side of the frame 1, a deviation-correcting guide roller 3 is arranged, one end of the deviation-correcting guide roller 3 is placed on the U-shaped fixed block 11, and the other end of the deviation-correcting guide roller 3 is placed on a U-shaped groove on the screw rod nut 41; a square guide rail, namely a slide bar 22, is arranged at the position of the frame 1 at one side of the deviation-rectifying guide roller 3, a slide seat 23 capable of sliding on the slide bar 22 is arranged on the slide bar 22 in a sliding way, a sensor 2 is arranged on the slide seat 23, the sensor 2 is connected with the input end of a controller by a lead, and the output end of the controller is connected with a motor 4; the position of the sensor 2 corresponding to the boundary line 53 between the four-layer region 52 and the two-layer region 51 is set by the carriage 23.

The specific working process of the first embodiment is as follows: first, the lower slider 23 is moved left and right to align the sensor 2 with the position of the edge insertion line 53 near the motor 4 side, and then the apparatus is turned on. In the process of running the edge inserting film, when the sensor 2 detects the four-layer area 52 of the edge inserting film, namely the position (thickness) of the four layers is detected, the edge inserting line 53 is deviated leftwards, at the moment, the controller can input a signal detected by the sensor 2 to the controller, then the controller controls the motor 4 to rotate to drive the screw rod 41 to rotate so that the screw rod nut 42 moves downwards along the sliding opening 12, along with the downward movement of the screw rod nut 42, one end of the deviation correcting guide roller 3 moves downwards and inclines downwards under the action of self weight and the downward pulling force of the edge inserting film, when the deviation correcting guide roller 3 inclines to a certain degree, the edge inserting film can deviate towards the side with downward inclination of the deviation correcting guide roller 3, when the deviation reaches the thickness of two layers of the two layer areas 51 detected by the sensor 2, the controller controls the motor 4 to rotate towards the opposite direction, the reverse rotation of the screw rod 42 can cause the screw rod nut 42 to move upwards so that one end of the deviation correcting guide roller 3 is too high, and then the edge inserting film deviates to the other side of the deviation correcting guide roller 3, so that the four-layer area 52 can be detected once, the two-layer area 51 can be detected once, the motor 4 rotates clockwise or anticlockwise, and the four-layer area 52 and the two-layer area 51 of the edge inserting film are enabled to be in the corresponding nearby positions of the sensor 2. Because the relative positions of the two edge inserting plates 61 are not fixed in the film blowing process, even if the problems of air leakage, air elimination and the like occur when the full-biodegradable material is used for blowing the film, although the total width of the edge inserting film is changed, the distance between the two edge inserting lines 53 is not influenced relatively, namely the width of the middle two-layer area 51 is not changed. Therefore, after the position of the edge inserting line 53 is stabilized, the walking direction of the whole edge inserting film is basically accurate, and the center of the two layer areas 51 of the edge inserting film basically corresponds to the center of the punching knife, so that the widths of the two handles of the produced convenient bag are basically consistent and symmetrical, and the product yield is improved.

The second embodiment is mainly different from the first embodiment in that: as shown in fig. 6, the swing mechanism is a cylinder 45, the body of the cylinder 45 is mounted on the frame 1, the cylinder rod of the cylinder 45 is connected to one end of the deviation-correcting guide roller 3, and the other end of the deviation-correcting guide roller 3 is hinged to the frame 1 through a pin 31; the detection mechanism comprises a proximity switch 21, wherein the proximity switch 21 is a photoelectric sensor and is generally designed in a U shape, and the proximity switch 21 is arranged on two sides of the edge insertion film, and one proximity switch is arranged on each side. The specific working process is as follows: when the inserting edge touch is suddenly narrowed, one of the proximity switches 21 cannot detect the existence of the inserting edge touch, if the proximity switch 21 on one side provided with the air cylinder 45 cannot detect the plastic film, the controller controls the electromagnetic valve to retract the cylinder rod of the air cylinder 45, so that one end of the deviation correcting guide roller 3 is inclined downwards, the inserting edge film is deflected towards the side, when the proximity switch 21 on the side detects the inserting edge film, the proximity switch 21 on the other side cannot detect the inserting edge film, at the moment, the controller controls the electromagnetic valve to release to extend the cylinder rod of the air cylinder 45, so that one end of the deviation correcting guide roller 3 is lifted, the deviation correcting guide roller 3 with one end lifted can deflect the inserting edge film towards the other side, the reciprocating is carried out, the trend of the inserting edge film is continuously corrected along with the downward movement or lifting of one end of the deviation correcting guide roller 3, and the central position of the inserting edge film basically corresponds to the central position of the punching knife, the accuracy of punching is ensured to a certain extent,

the third embodiment is different from the first embodiment in that: as shown in fig. 7, the third embodiment includes two deviation-correcting guide rollers 3, the two deviation-correcting guide rollers 3 are installed in parallel on a supporting plate 43, the swinging mechanism is a stepping motor 44, the supporting plate 43 is connected to a motor shaft of the stepping motor 44, and the stepping motor 44 is installed on the controller 7, which is an integrated design of the deviation-correcting guide rollers, the swinging mechanism and the controller.

The specific working process of the third embodiment is as follows: when the sensor 2 detects the position of the four-layer area 52 of the edge inserting film, the controller 7 controls the stepping motor 44 to deflect by a certain angle, so as to drive the supporting plate 43 and the two deviation-correcting guide rollers 3 arranged on the supporting plate to swing back and forth, so that the trend of the edge inserting film is corrected, when the sensor 2 detects the two-layer area 51 of the edge inserting film, the controller 7 controls the stepping motor 44 to swing in the opposite direction, so that the position of the four-layer area 52 of the edge inserting film approaches to the position of the sensor 2. In such a reciprocating manner, the position of the edge inserting line 53 of the edge inserting film is controlled to be close to the sensor 2, so that the central position of the two layer areas 51 basically corresponds to the central position of the punching knife, and the accuracy of punching the handle of the convenient bag is ensured.

Claims (5)

1. The utility model provides a deviation correcting device of system bag machine which characterized in that: including frame, detection mechanism, control mechanism, swing mechanism, the deflector roll of rectifying, detection mechanism include sensor, adjusting part, set up and insert the position that the limit membrane corresponds, the deflector roll of rectifying with swing mechanism connect, swing mechanism be connected with the controller.

2. The apparatus of claim 1, wherein the apparatus further comprises: the sensors are arranged at corresponding positions between the four-layer area and the two-layer area of the edge inserting film.

3. A deviation correcting device for a bag machine according to claim 1 or 2, wherein: the sensor is a photoelectric sensor for identifying the thickness.

4. The apparatus of claim 1, wherein the apparatus further comprises: the swing mechanism comprises a motor, a screw rod and a screw rod nut, the screw rod is connected to the motor, and the motor is installed on the rack.

5. The apparatus of claim 1, wherein the apparatus further comprises: the adjusting component comprises a sliding seat and a sliding rod.

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