Packaging bag oblique angle zipper adding device

Abstract

The utility model discloses a packaging bag oblique angle zipper adding device, and belongs to the technical field of packaging machinery. The device comprises a rack, a packaging bag conveying unit, a zipper mounting unit and a hot pressing unit. According to the core improvement, the zipper mounting unit comprises a sliding table, a driving unit and a cutting unit, a pressing mechanism used for fixing a zipper is arranged on the sliding table, and a preset included angle is formed between the reciprocating movement direction of the sliding table and the conveying direction of the packaging bag. By means of the design, the sliding table can stably and directionally pull the pressed and fixed zipper in the inclined direction at equal intervals and accurately move and position the zipper to the bevel angle portion of a packaging bag, and then heat sealing is completed through the hot-pressing unit. According to the utility model, the zipper can be automatically and accurately mounted at the oblique angle part of the packaging bag for the first time, and the technical problem that the existing linear equipment cannot be used for processing such products is solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a lock technical field especially relates to a packing bag bevel zipper add device. BACKGROUND

[0002] In the production of packing bags, it is a mature process to add a zipper to the bag opening to achieve repeatable sealing. The automatic adding device in the prior art is designed for linear installation of the zipper along the flat edge of the packing bag (usually the top edge of the bag opening). Whether it is the conveying, cutting, positioning and final hot pressing of the zipper, each functional unit follows a straight path parallel to the edge of the packing bag.

[0003] With the diversification of product design, there is a demand for placing the zipper at the bevel of the packing bag to obtain a better sealing line or a unique opening experience. However, when the design of the packing bag requires the zipper to be placed at the bevel of the bag, the above-mentioned complete device based on the linear mode shows its fundamental limitations. The prior art lacks a systematic solution that can direct the zipper in a predetermined inclined direction and finally position it at the bevel. The defect is not that the angle of a single component cannot be adjusted, but that from the trajectory of the zipper to the layout of the entire functional unit, none has been designed to achieve the transition from straight to bevel. Therefore, there is an urgent need for a new packing bag bevel zipper adding device that can reliably transport and position the zipper to the bevel area of the packing bag through an inclined directional traction system, thus filling the technical gap. SUMMARY

[0004] The utility model aims at overcoming the shortcomings and deficiencies of the prior art and provides a packing bag bevel zipper adding device.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical scheme: a packing bag bevel zipper adding device, comprising: a rack; a packing bag conveying unit for conveying the packing bag in a first direction; a zipper installation unit arranged on the rack and located on one side of the packing bag conveying unit; and a hot pressing unit, the zipper installation unit includes a sliding table, a driving unit for driving the sliding table to move back and forth, and a cutting unit for cutting the zipper to a certain length; the sliding table is provided with a pressing mechanism for fixing the zipper; wherein the reciprocating direction of the sliding table and the first direction of the packing bag conveying unit form a predetermined angle, so that the sliding table can move and position the zipper fixed by the pressing mechanism to the bevel of the packing bag on the packing bag conveying unit; the hot pressing unit is arranged corresponding to the bevel and used for hot pressing the positioned zipper on the packing bag.

[0006] By the technical scheme, the functions of pressing, directional traction and inclined arrangement are integrated, specifically, the device reliably fixes the zipper through the pressing mechanism arranged on the sliding table, then the driving unit drives the whole sliding table to carry the fixed zipper segment to perform accurate directional traction along a straight path with a stable included angle with the conveying direction of the packaging bag, the consecutive action stably moves the zipper from the feeding position and accurately arranges the zipper to the non-linear bag body inclined angle area, and the blank in the technical field is filled. Secondly, the zipper is pressed and then integrally formed with the sliding table before traction, so that the zipper is ensured not to slip and loosen during the inclined movement, the equidistant and stable straight line conveying is realized, a reliable premise for subsequent high-quality heat sealing at the inclined angle part is provided, and finally the automatic production of the inclined zipper packaging bag is realized.

[0007] As a preferred technical scheme of the utility model, the sliding table is provided with a mounting groove, and a feeding plate is embedded in the mounting groove.

[0008] Through the above technical scheme, the mounting groove is arranged, and the feeding plate with the placing groove is embedded, so that a special, stable and accurate bearing and positioning platform is provided for the zipper. This not only ensures the position of the zipper during the inclined movement of the sliding table, prevents the displacement or falling of the zipper, but also enables the zipper to be accurately sent to the heat pressing station in a preset posture.

[0009] As a preferred technical scheme of the utility model, the feeding plate is a long strip-shaped plate member, and the length direction of the feeding plate extends beyond the sliding table.

[0010] Through the above technical scheme, the long strip-shaped feeding plate with the two ends extending beyond the sliding table is adopted, and the supporting and guiding length of the zipper is effectively increased. This design makes the zipper more smooth when entering and leaving the placing groove, and provides a longer positioning reference surface for the zipper, further enhancing the stability of the moving process.

[0011] As a preferred technical scheme of the utility model, the pressing mechanism comprises a first linear driver, the first linear driver is installed on the sliding table, and the output end of the first linear driver is arranged perpendicularly to the placing groove.

[0012] Through the above technical scheme, the first linear driver perpendicular to the placing groove is arranged as the pressing mechanism, so that the zipper can be firmly pressed and fixed in the placing groove before the movement of the sliding table. This active pressing method avoids the loosening of the zipper caused by inertia or vibration, and ensures the stable conveying of the zipper.

[0013] As a preferred technical scheme of the utility model, the driving unit comprises a driving motor and a belt transmission mechanism driven by the driving motor, the belt transmission mechanism is connected with the sliding table to drive the reciprocating movement of the sliding table.

[0014] Through the above technical scheme, the driving unit composed of the driving motor and the belt transmission mechanism can provide stable, uniform and controllable power for the reciprocating movement of the sliding table, which helps to ensure the stability of the sliding table during starting and stopping, thereby guaranteeing the movement accuracy of the zipper during the oblique transfer process and the reliability of the device operation.

[0015] As a preferred technical scheme of the utility model, the sliding table is further provided with a zipper guide frame; the zipper guide frame comprises two oppositely arranged guide plates, and a plurality of guide wheels are arranged on the two guide plates along the zipper conveying path; the guide wheels on the two guide plates are opposite to each other and form a chain guiding gap for the zipper to pass through therebetween; the zipper enters from the chain guiding gap of the two guide wheels at the top end and passes out from the chain guiding gap of the two guide wheels at the bottom to be guided into the placing groove.

[0016] Through the above technical scheme, by arranging the zipper guide frame composed of two guide plates and multiple pairs of guide wheels, a smooth, orderly and limited conveying path is created for the zipper drawn out from the feeding disc. The zipper is effectively regularized when passing through the chain guiding gap formed by the paired guide wheels, avoiding winding, twisting or skewing, and ensuring that the zipper finally enters the placing groove flatly.

[0017] As a preferred technical scheme of the utility model, the zipper guide frame further comprises a pre-tightening mechanism; one of the two guide plates is a fixed plate, and the other is a movable plate; the fixed plate is fixedly installed on the rack, and the movable plate is slidably installed on the rack, and the movable plate is connected with the pre-tightening mechanism on the side opposite to the fixed plate; the pre-tightening mechanism is configured to apply an elastic pre-tightening force to the movable plate and pointing to the fixed plate.

[0018] Through the above technical scheme, by setting one of the guide plates as a movable plate driven by the pre-tightening mechanism, the spacing between the two guide plates has adjustable elasticity. This design can automatically adapt to zippers of different thicknesses, and the guide wheels are always in close contact with the zipper through the elastic pre-tightening force, providing moderate tension while realizing the guiding function, ensuring that the zipper is always in a tensioned and flat state during the conveying process.

[0019] As a preferred technical scheme of the utility model, the pre-tightening mechanism comprises a mounting seat, a push rod, a compression spring and an adjusting bolt; the mounting seat is fixedly arranged on the rack; one end of the push rod is in abutment with the movable plate, and the other end extends into the mounting seat; the compression spring is arranged in the mounting seat and provides elastic force to the push rod; the adjusting bolt is threadedly connected with the mounting seat and is screwed in or out to adjust the compression amount of the compression spring.

[0020] Through the above technical scheme, the compression amount of the compression spring is changed by the adjusting bolt, and the size of the elastic pre-tightening force can be accurately adjusted. This enables the operator to quickly adjust the tensioning force to the optimal state according to the actual use of the zipper type and material properties. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 is a structural schematic view of the utility model;

[0022] Figure 2 is a layout schematic view of the device of the utility model;

[0023] Figure 3 is a structural schematic view of the zipper mounting unit in the utility model;

[0024] Figure 4 is a structural schematic view of the driving unit in the utility model;

[0025] Figure 5 is Figure 1 is an enlarged view of part A;

[0026] Figure 6 is a schematic view of the diagonal zipper packaging bag made by the utility model.

[0027] Reference signs: 1, rack; 2, packaging bag conveying unit; 3, zipper mounting unit; 4, hot-pressing unit; 5, sliding table; 6, cutting unit; 7, mounting groove; 8, feeding plate; 9, placing groove; 10, first linear driver; 11, driving motor; 12, belt transmission mechanism; 13, zipper guide frame; 14, guide plate; 15, guide wheel; 16, pre-tightening mechanism; 17, mounting seat; 18, push rod; 19, compression spring; 20, adjusting bolt. DETAILED DESCRIPTION

[0028] In order to make the technical means, creative features, purposes and effects achieved by the utility model easy to understand, the utility model is further described below in combination with specific embodiments.

[0029] In the description of the utility model, need explain, unless another explicit provision and limitation, term " install " " set with " " connection " and the like, should do broad sense understanding, for example " connection " can be fixed connection, also can be detachable connection, or integrally connected;Can be mechanical connection, also can be electrical connection;Can be directly connected, also can be indirectly connected through intermediate medium, can be two elements inside the intercommunication.For ordinary skilled person in the art, the above-mentioned terms can be understood in the utility model according to specific circumstances.

[0030] As Figures 1-6 The utility model discloses a kind of packaging bag bevel zipper installation device, comprising: rack 1;Packaging bag conveying unit 2 (this is prior art, the emphasis of the present application is not in packaging bag conveying unit 2 specific structure, can realize packaging bag transmission),For conveying packaging bag along first direction;Zipper installation unit 3, it is located on the rack 1 and is located at the side of the packaging bag conveying unit 2;And hot-press unit 4, zipper installation unit 3 includes sliding table 5, for driving the reciprocating movement of the sliding table 5 driving unit and for cutting zipper fixed length cutting unit 6 (this is prior art, the emphasis of the present application is not in cutting unit 6 specific structure, can realize zipper cutting just can);Sliding table 5 is provided with the compression mechanism for fixing zipper;Wherein, the reciprocating movement direction of sliding table 5 and the first direction of the packaging bag conveying unit 2 form a preset angle, so that sliding table 5 can be fixed with the zipper of the compression mechanism moves and positions to the bevel position of packaging bag of the packaging bag conveying unit 2;Hot-press unit 4 is correspondingly arranged to the bevel position, for hot-pressing zipper after positioning on packaging bag.It needs to be explained that " preset angle " between the reciprocating movement direction of sliding table 5 and packaging bag conveying direction, its specific angle value is not fixed.The setting of this angle is fundamentally dependent on the inclination that zipper is expected to present on packaging bag finished product.Therefore, the technical solution protected in the present application covers the inclined directional traction principle adopted to realize bevel installation, rather than a certain specific angle value.

[0031] As Figure 6As shown, the oblique-angle zipper packaging bag made by the device integrates the functions of "pressing, directional traction and inclined arrangement". Specifically, the device reliably fixes the zipper through the pressing mechanism arranged on the sliding table 5, and then drives the entire sliding table 5 by the driving unit to carry the fixed zipper segment for accurate directional traction along a straight path at a stable included angle with the conveying direction of the packaging bag. This consecutive action stably transfers the zipper from the feeding position to the oblique-angle area of the bag body and accurately arranges it, filling the gap in this technical field. Secondly, by pressing the zipper and forming a rigid integral with the sliding table 5 before traction, it ensures that the zipper does not slip or loosen during inclined movement, realizes equidistant and stable straight-line conveying, thereby providing a reliable premise for subsequent high-quality heat sealing at the oblique-angle part, and finally realizes the automated production of oblique-angle zipper packaging bags.

[0032] The zipper described in the application is a typical type suitable for the packaging industry, which has the characteristics of being firmly compounded with the packaging bag material by heat pressing. In the working process of the device, the zipper segment carried by the sliding table 5 and fixed by the pressing mechanism is directed and positioned to the preset oblique-angle part of the packaging bag along the preset inclined direction. On this basis, the specific action timing of the cutting unit 6 and the heat pressing unit 4 can be flexibly configured according to production needs, mainly embodied in two implementation modes: first, the cutting unit 6 can cut the directed and positioned zipper to a fixed length, and then the heat pressing unit 4 can heat seal the zipper segment; second, the heat pressing unit 4 can heat seal the directed and positioned zipper, and then the cutting unit 6 can cut it near the heat pressing part. Both of these two modes are premised on accurately directing and positioning the zipper to the oblique-angle position, embodying the process flexibility of the device based on realizing the core function.

[0033] The application point of the application lies in the improvement of the mechanical structure, spatial layout and physical motion coordination relationship of the packaging bag oblique-angle zipper installation device, which solves the mechanical engineering problem of how to direct and accurately arrange the zipper at the oblique-angle of the packaging bag. The motion control involved in the device (such as the start and stop of the driving motor 11, the action sequence of the linear driver, etc.) is realized by using existing and conventional industrial controllers (such as PLC or single-chip microcomputer) and standard program logic. Therefore, the technical solution of the application does not involve any improvement on the programming method, control algorithm or control system itself, and the core innovation is completely in the structure of the above-mentioned hardware device itself.

[0034] The installation groove 7 is provided on the slide table 5, and the feeding plate 8 is embedded in the installation groove 7. The feeding plate 8 is provided with a placing groove 9 for embedding the zipper along the length direction of the feeding plate 8. By providing the installation groove 7 and embedding the feeding plate 8 with the placing groove 9, a special, stable and accurate bearing and positioning platform is provided for the zipper. This not only ensures the position of the zipper fixed during the inclined movement of the slide table 5, prevents the zipper from moving or falling off, but also enables the zipper to be accurately sent to the hot pressing station in a preset posture.

[0035] The feeding plate 8 is a long strip-shaped plate, and the length direction of the feeding plate 8 extends beyond the slide table 5. The long strip-shaped feeding plate 8 extending beyond the slide table 5 at both ends effectively increases the length of the support and guidance of the zipper. This design makes the zipper more smooth when entering and leaving the placing groove 9, and provides a longer positioning reference surface for the zipper, further enhancing the stability of the moving process.

[0036] The pressing mechanism includes a first linear actuator 10, which is installed on the slide table 5, and the output end of the first linear actuator 10 is perpendicular to the placing groove 9. By setting the first linear actuator 10 perpendicular to the placing groove 9 as the pressing mechanism, the zipper can be firmly pressed and fixed in the placing groove 9 before the slide table 5 moves. This active pressing method avoids the loosening of the zipper caused by inertia or vibration, ensuring the stable conveying of the zipper. The first linear actuator 10 in the embodiment can be an electric cylinder, a pneumatic cylinder or a hydraulic cylinder.

[0037] The driving unit includes a driving motor 11 and a belt transmission mechanism 12 driven by the driving motor 11, and the belt transmission mechanism 12 is connected with the slide table 5 to drive the reciprocating movement of the slide table 5. The driving unit composed of the driving motor 11 and the belt transmission mechanism 12 can provide smooth, uniform and controllable power for the reciprocating movement of the slide table 5, which helps to ensure the stability of the slide table 5 during starting and stopping, thereby ensuring the movement accuracy of the zipper during the inclined moving process and the reliability of the device operation.

[0038] In the device described in the present application, the belt transmission mechanism 12 belongs to the known prior art in the field of mechanical transmission. Specifically, the mechanism is usually composed of a driving motor 11, a driving wheel, a driven wheel, an annular belt sleeved on the two wheels, and necessary tension adjusting components. The working principle is as follows: the driving motor 11 outputs power to drive the driving wheel to rotate, and then the power and motion are transmitted to the driven wheel through the friction (or meshing, such as synchronous belt) between the annular belt and the pulley, and finally converted into the required linear reciprocating motion of the slide table 5. The present application directly applies this mature technology to realize the driving of the slide table 5. The innovation of the present application does not lie in the transmission mechanism itself, but in how to creatively integrate it into a brand new overall system for realizing the directional traction and installation of the inclined zipper.

[0039] The slide table 5 is further provided with a zipper guide frame 13; the zipper guide frame 13 comprises two oppositely arranged guide plates 14, and a plurality of guide wheels 15 are arranged on the two guide plates 14 along the zipper conveying path; the guide wheels 15 on the two guide plates 14 are opposite to each other and form a guide chain gap therebetween for the zipper to pass through; the zipper enters from the guide chain gap of the top two guide wheels 15 and exits from the guide chain gap of the bottom two guide wheels 15 and is guided into the placement groove 9.

[0040] By arranging the zipper guide frame 13 composed of two guide plates 14 and multiple pairs of guide wheels 15, a smooth, orderly and limited conveying path is created for the zipper drawn from the feeding disc. The zipper is effectively regularized when passing through the guide chain gap formed by the pairs of guide wheels 15, avoiding winding, twisting or skewing, and ensuring that it finally enters the placement groove 9 flatly.

[0041] The zipper guide frame 13 further comprises a pre-tightening mechanism 16; one of the two guide plates 14 is a fixed plate, and the other is a movable plate; the fixed plate is fixedly installed on the rack 1, and the movable plate is slidably installed on the rack 1, and the movable plate is connected with the pre-tightening mechanism 16 on the side opposite to the fixed plate; the pre-tightening mechanism 16 is configured to apply an elastic pre-tightening force to the movable plate directed towards the fixed plate.

[0042] By arranging one of the guide plates 14 as a movable plate pushed by the pre-tightening mechanism 16, the spacing between the two guide plates 14 is elastically adjustable. This design can automatically adapt to zippers of different thicknesses, and the guide wheels 15 always fit the zipper through the elastic pre-tightening force, providing a moderate tensioning force while achieving the guiding function, ensuring that the zipper is always in a tensioned and flat state during the conveying process.

[0043] The pre-tightening mechanism 16 comprises a mounting seat 17, a push rod 18, a compression spring 19 and an adjusting bolt 20; the mounting seat 17 is fixedly arranged on the rack 1; one end of the push rod 18 abuts against the movable plate, and the other end extends into the mounting seat 17; the compression spring 19 is arranged in the mounting seat 17 and provides an elastic force to the push rod 18; the adjusting bolt 20 is threadedly connected with the mounting seat 17 and adjusts the compression amount of the compression spring 19 by screwing in or out. By adjusting the compression amount of the compression spring 19 through the adjusting bolt 20, the size of the elastic pre-tightening force can be accurately adjusted. This allows the operator to quickly adjust the tensioning force to the optimal state according to the actual zipper model and material properties used.

[0044] The basic principle, main features and advantages of the present application are shown and described above. It should be understood by those skilled in the art that the present application is not limited by the above examples, and the above examples and descriptions in the specification are only preferred examples of the present application and are not intended to limit the present application. Without departing from the spirit and scope of the present application, various changes and improvements can be made to the present application. These changes and improvements all fall within the scope of the claimed present application, and the scope of protection of the present application is defined by the appended claims and their equivalents.

Claims

1. A diagonal zipper add-on device for a bag, comprising: The rack (1), the packaging bag conveying unit (2) for conveying the packaging bag along the first direction, the zipper installation unit (3) arranged on the rack (1) and located on one side of the packaging bag conveying unit (2), and the hot pressing unit (4) are characterized in that: the zipper installation unit (3) comprises a sliding table (5), a driving unit for driving the sliding table (5) to reciprocate, and a cutting unit (6) for cutting the zipper to a fixed length; the sliding table (5) is provided with a pressing mechanism for fixing the zipper; the reciprocating direction of the sliding table (5) forms a preset angle with the first direction of the packaging bag conveying unit (2), so that the sliding table (5) can move and position the zipper fixed by the pressing mechanism to the bevel position of the packaging bag on the packaging bag conveying unit (2); the hot pressing unit (4) is arranged corresponding to the bevel position for hot pressing the positioned zipper on the packaging bag.

2. The bag angle zipper add-on device of claim 1, wherein: The sliding table (5) is provided with a mounting groove (7), and the mounting groove (7) is embedded with a feeding plate (8), and the feeding plate (8) is provided with a placing groove (9) for embedding the zipper along the length direction thereof.

3. The bag angle zipper installation apparatus according to claim 2, wherein: The feeding plate (8) is a long strip-shaped plate member, and the length direction of the feeding plate (8) extends beyond the sliding table (5).

4. The bag angle zipper add-on device according to claim 2 or 3, characterized in that: The pressing mechanism comprises a first linear driver (10), and the first linear driver (10) is installed on the sliding table (5), and the output end thereof is arranged vertically to the placing groove (9).

5. The bag angle zipper add-on device of claim 1, wherein: The driving unit comprises a driving motor (11) and a belt transmission mechanism (12) driven by the driving motor (11), and the belt transmission mechanism (12) is connected with the sliding table (5) to drive the reciprocating movement thereof.

6. The bag angle zipper add-on device according to claim 2 or 3, characterized in that: The sliding table (5) is further provided with a zipper guide frame (13); the zipper guide frame (13) comprises two oppositely arranged guide plates (14), and a plurality of guide wheels (15) are arranged on the two guide plates (14) along the zipper conveying path; the guide wheels (15) on the two guide plates (14) are opposite to each other and form a guide chain gap therebetween for the zipper to pass through; the zipper enters from the guide chain gap of the top two guide wheels (15) and exits from the guide chain gap of the bottom two guide wheels (15) to be guided into the placing groove (9).

7. The bag angle zipper installation apparatus according to claim 6, wherein: The zipper guide frame (13) further comprises a pre-tightening mechanism (16); one of the two guide plates (14) is a fixed plate, and the other is a movable plate; the fixed plate is fixedly installed on the rack (1), and the movable plate is slidably installed on the rack (1), and the movable plate is connected with the pre-tightening mechanism (16) on the side opposite to the fixed plate; the pre-tightening mechanism (16) is configured to apply an elastic pre-tightening force to the movable plate and directed to the fixed plate.

8. The bag angle zipper installation apparatus according to claim 7, wherein: The pre-tightening mechanism (16) comprises a mounting seat (17), a push rod (18), a compression spring (19) and an adjusting bolt (20); the mounting seat (17) is fixedly arranged on the rack (1); one end of the push rod (18) abuts against the movable plate, and the other end extends into the mounting seat (17); the compression spring (19) is arranged in the mounting seat (17) and provides elastic force to the push rod (18); the adjusting bolt (20) is threadedly connected with the mounting seat (17) and is rotated in or out to adjust the compression amount of the compression spring (19).

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