Double-tooth feeding device for sewing thick material packaging bag

Abstract

The utility model relates to the technical field of sewing machine feeding, in particular to a double-tooth feeding device for sewing a thick material packaging bag, which comprises a double-tooth feeding plate and a double-presser-foot plate which are oppositely arranged, the double-presser-foot plate is fixedly arranged, and the double-tooth feeding device further comprises a feeding driving mechanism for driving the double-tooth feeding plate to tightly hold the double-presser-foot plate in a reciprocating mode. The double-tooth feeding plate comprises two groups of feeding tooth plates which are horizontally arranged front and back, a plurality of rows of teeth which are distributed at intervals and are meshed with a packaging bag opening are arranged on the feeding tooth plates, and one row of teeth located at the middle position is meshed with a sewing thread of the packaging bag opening; one row of teeth at the sewing position of the thread pressing foot and the meshed packaging bag opening are used for forming independent hoop feeding on the sewing position of the packaging bag opening, and the bag pressing foot and other multiple rows of teeth are used for conducting hoop feeding on other positions of the packaging bag opening. And the stability of overall feeding of packaging bag openings is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of sewing machine feeding, in particular to a double-tooth feeding device for sewing thick material packaging bags. Background Art

[0002] As is known to all, an industrial sealing sewing machine is generally used to seal thick plastic woven packaging bags. During the operation of the industrial sealing sewing machine, each component is particularly critical, including a feeding device for feeding the sewing device. The existing feeding device currently uses a set of bottom pressing plates and top presser feet to feed the packaging bag opening. Since the sewn seams on the packaging bag opening are thicker than other seam-free areas, the seams will react to the feeding operation of the pressing plate and the presser foot on the packaging bag opening, thereby hindering the clamping of the pressing plate and the presser foot on the packaging bag opening, which is prone to slipping. For this reason, a double-tooth feeding device for sewing thick material packaging bags is designed, which is convenient for separately clamping and feeding the seams on the sealing of the packaging bag, and improves the stability of the overall feeding of the packaging bag opening. Utility Model Content

[0003] 1. Technical issues to be resolved

[0004] In view of the deficiencies in the prior art, the utility model provides a double-tooth feeding device for sewing thick material packaging bags, which is convenient for separate clamp feeding at the seams on the packaging bag seal, thereby improving the stability of the overall feeding to the packaging bag opening.

[0005] (II) Technical solution

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a double-tooth feeding device for sewing thick material packaging bags, comprising a double-tooth feeding plate and a double pressure foot plate arranged opposite to each other, the double pressure foot plate being fixed in position, and also comprising a feeding drive mechanism for driving the double-tooth feeding plate to reciprocate and clamp the double pressure foot plate, the double-tooth feeding plate comprising two groups of feeding tooth plates arranged horizontally front and back, the feeding tooth plate being provided with multiple rows of teeth for engaging the packaging bag opening at intervals, one of the rows of teeth located in the middle position engaging the stitching of the packaging bag opening, the double pressure foot plate comprising a bag pressing foot and a thread pressing foot, the thread pressing foot and a row of teeth engaging the stitching of the packaging bag opening are used to form a separate clamping hoop feeding for the stitching of the packaging bag opening, the bag pressing foot and the other multiple rows of teeth are used to perform clamping hoop feeding for other positions of the packaging bag opening.

[0007] Preferably, the presser foot is located at the front section of the feed tooth plate located at the rear side and at the side opposite to the rear section of the connecting beam located at the front side, and the teeth at the rear section of the teeth in the feed tooth plate located at the front side are smaller than those at the front section.

[0008] Preferably, the front sides of the bag pressing foot and the line pressing foot are both provided with converging warped edges.

[0009] Preferably, the feeding drive mechanism includes a fixed and rotatable transmission shaft and a rotating shaft, two cams are fixedly connected to the transmission shaft, a fixed seat and a connecting plate are fixedly connected to the rotating shaft, a connecting rod and a connecting beam are respectively rotatably connected to the fixed seat and the connecting plate, the connecting rod is fixedly connected to one of the cams, the connecting beam is rotatably connected to the other cam, and the two feeding tooth plates are mounted on the connecting beam.

[0010] Preferably, the connecting rod and the fixing seat, the connecting plate and the connecting beam, and the connecting beam and another cam are all rotationally connected via needle bearings.

[0011] (III) Beneficial effects

[0012] Compared with the prior art, the utility model provides a double-tooth feeding device for sewing thick material packaging bags, which has the following beneficial effects:

[0013] The double-tooth feeding device for sewing thick-material packaging bags is provided with a double-tooth feeding plate, wherein two groups of feeding tooth plates can increase the bite area and is suitable for feeding the thicker packaging bag opening; multiple rows of teeth are arranged at intervals on each feeding tooth plate, and the thicker packaging bag opening can be fed in multiple rows, thereby avoiding the situation where the entire packaging bag opening slips due to the loose bite of the other row with the packaging bag opening, and increasing the bite stability of the thicker packaging bag opening; a double pressure foot plate is provided, wherein the pressure foot and a row of teeth at the sewing position of the packaging bag opening are used to form a separate clamp feeding at the sewing position of the packaging bag opening, wherein the bag pressure foot and the other multiple rows of teeth are used to perform clamp feeding at other positions of the packaging bag opening, thereby avoiding the influence of the clamp feeding at other positions of the packaging bag opening caused by the sewing position, and improving the stability of the overall feeding of the packaging bag opening; the double-tooth feeding device for sewing thick-material packaging bags is convenient for separately performing clamp feeding at the seam on the packaging bag seal, thereby improving the stability of the overall feeding of the packaging bag opening. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0015] Figure 2 It is a structural schematic diagram of the cooperation between the double-tooth feeding plate and the feeding drive mechanism of the utility model;

[0016] Figure 3 This is a schematic diagram of the structure of the feeding tooth plate, the bag pressing foot and the line pressing foot of the utility model;

[0017] Figure 4 This is a schematic diagram of the structure of the feeding tooth plate, the bag pressing foot and the thread pressing foot of the utility model;

[0018] Figure 5 This is a schematic diagram of the structure of the coupling beam and two feeding teeth of the utility model;

[0019] Figure 6 It is a schematic structural diagram of the cooperation between the crimping foot and two feeding tooth plates of the utility model.

[0020] Markings in the attached figure: 1. feeding tooth plate; 2. bag pressing foot; 3. line pressing foot; 4. transmission shaft; 5. rotating shaft; 6. cam; 7. connecting rod; 8. fixed seat; 9. connecting plate; 10. connecting beam; 11. teeth; 12. converging warping edge. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] Example:

[0023] See also Figure 1-6 , a double-tooth feeding device for sewing thick material packaging bags, comprising a double-tooth feeding plate and a double pressure foot plate arranged relatively, the double pressure foot plate is fixedly arranged, and also comprises a feeding driving mechanism for driving the double-tooth feeding plate to reciprocate and clamp the double pressure foot plate, the double-tooth feeding plate comprises two groups of feeding tooth plates 1 arranged horizontally front and back, the feeding tooth plate 1 is provided with multiple rows of teeth 11 for engaging the packaging bag opening at intervals, one of the rows of teeth 11 located in the middle position engages the stitching of the packaging bag opening, the double pressure foot plate comprises a bag pressing foot 2 and a line pressing foot 3, the line pressing foot 3 and a row of teeth 11 engaging the sewing position of the packaging bag opening are used to form a separate clamping hoop feeding for the sewing position of the packaging bag opening, the bag pressing foot 2 and the other multiple rows of teeth 11 are used to perform clamping hoop feeding on other positions of the packaging bag opening, the double-tooth feeding device for sewing thick material packaging bags can be widely used on various types of sewing machines, especially on the sewing machine of model GK68-9 produced by our company to obtain a more prominent stable clamping hoop feeding feature.

[0024] Specifically, the presser foot 3 is located at the front section of the feed tooth plate 1 located on the rear side and is located on the side opposite to the rear section of the connecting beam 10 located on the front side. The teeth at the rear section of the teeth 11 in the feed tooth plate 1 located on the front side are smaller than those at the front section. By making the teeth at the rear end of the teeth 11 in the feed tooth plate 1 located on the front side smaller than those at the front section, it is convenient to make the opening of the packaging bag tend to be compressed during sewing, which is beneficial to the sealing of the sewing thread on the opening of the thick material packaging bag.

[0025] Specifically, the front sides of the bag pressing foot 2 and the line pressing foot 3 are both provided with converging warping edges 12 , and the converging warping edges 12 are used to increase the smoothness and stability of the thick material packaging bag when it is fed into the bag pressing foot 2 and passes under the line pressing foot 3 .

[0026] Specifically, the feeding drive mechanism includes a transmission shaft 4 and a rotating shaft 5 which are fixed and rotatable. Two cams 6 are fixedly connected to the transmission shaft 4. A fixed seat 8 and a connecting plate 9 are fixedly connected to the rotating shaft 5. A connecting rod 7 and a connecting beam 10 are rotatably connected to the fixed seat 8 and the connecting plate 9 respectively. The connecting rod 7 is fixedly connected to one of the cams 6, and the connecting beam 10 is rotatably connected to the other cam 6. Two feeding tooth plates 1 are both installed on the connecting beam 10, and also include a driving member for driving the transmission shaft 4 to rotate. By starting the driving member, the transmission shaft 4 is driven to rotate. Through the cooperation of the rotating shaft 5, the connecting rod 7, the fixed seat 8 and one of the cams 6, the rotating shaft 5 is driven to rotate reciprocally. Through the cooperation of the rotating shaft 5, the connecting plate 9, the connecting beam 10 and the other cam 6, the two feeding tooth plates 1 installed on the connecting beam 10 can be driven to reciprocately hold the opening of the thick material packaging bag and press against the double tooth foot plate, and at the same time, the thick material packaging bag opening is fed.

[0027] Specifically, the connecting rod 7 and the fixed seat 8, the connecting plate 9 and the connecting beam 10, and the connecting beam 10 and another cam 6 are all rotatably connected through needle bearings. The needle bearings are used to replace traditional bushings to increase the service life of the feeding drive mechanism and also increase the stability of the feeding drive mechanism.

[0028] When in use, one end of the opening of the thick material packaging bag to be sewn is fed between the front feeding tooth plate 1 and the bag pressing foot 2, and then the feeding drive mechanism is started, which can drive the two feeding tooth plates 1 to reciprocate and bite the rear material packaging bag as a whole and press it on the bag pressing foot 2 to transport the thick material packaging bag to the rear side, and sew before sending it out of the rear feeding tooth plate 1. The pressing foot 3 can separately engage with the teeth 11 at the sewing place of the packaging bag opening to package and feed the sewing place, which can provide stable feeding for the material packaging bag after sewing by the sewing machine.

[0029] It should be noted that the phrases "one embodiment", "an embodiment", "an exemplary embodiment", "some embodiments", etc. mentioned in the specification indicate that the described embodiments may include certain features, structures or characteristics, but not every embodiment may include the certain features, structures or characteristics. In addition, such phrases do not necessarily refer to the same embodiment. In addition, when describing certain features, structures or characteristics in conjunction with an embodiment, it is within the knowledge of those skilled in the art to implement such features, structures or characteristics in conjunction with other embodiments, whether explicitly or not explicitly described.

[0030] It should be easily understood that “on,” “above,” and “over” in the present disclosure should be interpreted in the broadest manner, so that “on” not only means “directly on something,” but also includes the meaning of “on something” with intervening features or layers therebetween, and “above” or “over” not only includes the meaning of “above” or “over,” but also may include the meaning of “above” or “over something” with no intervening features or layers therebetween (i.e., directly on something).

[0031] In addition, spatially relative terms, such as "below," "below," "beneath," "above," "above," etc., may be used herein for ease of description to describe the relationship of one element or feature relative to other elements or features as shown in the figures. Spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation shown in the figures. The device may have other orientations (rotated 90 degrees or at other orientations), and the spatially relative descriptors used herein may likewise be interpreted accordingly.

[0032] It should be noted that, in this article, relational terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0033] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit it. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A double-tooth feeding device for sewing thick material packaging bags, Features: The invention comprises a double-tooth feed plate and a double presser foot plate which are arranged opposite to each other, wherein the double presser foot plate is fixedly arranged, and further comprises a feeding drive mechanism which drives the double-tooth feed plate to reciprocate and hold the double presser foot plate tightly, wherein the double-tooth feed plate comprises two groups of feed tooth plates (1) which are arranged horizontally in front and back, wherein the feed tooth plate (1) is provided with a plurality of rows of teeth (11) which are arranged at intervals and hold the packaging bag opening, wherein one row of teeth (11) located in the middle position holds the stitching of the packaging bag opening, wherein the double presser foot plate comprises a bag pressing foot (2) and a thread pressing foot (3), wherein the thread pressing foot (3) and a row of teeth (11) which hold the stitching of the packaging bag opening are used to form a separate holding hoop feeding for the stitching of the packaging bag opening, and the bag pressing foot (2) and the other plurality of rows of teeth (11) are used to hold the hoop feeding for other positions of the packaging bag opening.

2. The double-tooth feeding device for sewing thick material packaging bags according to claim 1, Features: The presser foot (3) is located at a front section of the feed tooth plate (1) located at the rear side and at a side opposite to the rear section of the connecting beam (10) located at the front side, and the teeth (11) in the feed tooth plate (1) located at the front side at the rear section are smaller than those at the front section.

3. The double-tooth feeding device for sewing thick material packaging bags according to claim 2, Features: The front side of the bag pressing foot (2) and the front side of the line pressing foot (3) are both provided with a converging warped edge (12).

4. The double-tooth feeding device for sewing thick material packaging bags according to claim 3, Features: The feeding drive mechanism comprises a transmission shaft (4) and a rotating shaft (5) which are fixed in position and can rotate. Two cams (6) are fixedly connected to the transmission shaft (4). A fixing seat (8) and a connecting plate (9) are fixedly connected to the rotating shaft (5). A connecting rod (7) and a connecting beam (10) are rotatably connected to the fixing seat (8) and the connecting plate (9), respectively. The connecting rod (7) is fixedly connected to one of the cams (6). The connecting beam (10) is rotatably connected to the other cam (6). Both of the feeding tooth plates (1) are mounted on the connecting beam (10).

5. The double-tooth feeding device for sewing thick material packaging bags according to claim 4, Features: The connecting rod (7) and the fixing seat (8), the connecting plate (9) and the connecting beam (10), and the connecting beam (10) and another cam (6) are all rotatably connected via needle bearings.

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