Double-needle double-thread handheld bag sealing machine

Abstract

The utility model discloses a double-needle double-thread handheld bag sealing machine which comprises a machine head, a lifting and pressing rod and a machine needle rod are further arranged on the machine head, a material pressing plate is arranged at the tail end of the lifting and pressing rod, a needle separating piece is arranged on the machine needle rod, and two sets of fixing holes and sewing needles are arranged on the needle separating piece. The needle separating piece is hinged and rotated or fixedly arranged relative to the machine needle rod through a radial screw, and two kidney-shaped needle penetrating holes are formed in the material pressing plate and are opposite to fixing holes in the needle separating piece. According to the double-needle and double-thread handheld bag sealing machine, the needle separating structure is arranged, double-needle sewing is synchronously driven by the machine head, double-needle and double-thread bag sealing can be rapidly conducted on a bag body, the needle separating piece can be manually adjusted, and the bag body can be conveniently sealed by rotating the needle separating piece and the bottom hook needles correspondingly arranged in the machine head. The relative distance between the two sewing threads and the gap between the sewing needles can be rapidly adjusted, the sewing and packaging effect is improved, and good packaging practicability and adaptability are achieved.

Description

Technical Field

[0001] This utility model relates to the field of sealing machine technology, specifically to a double-needle double-thread handheld sealing machine. Background Technology

[0002] Handheld sealing machines are widely used for sealing packaging bags. They are convenient to use, easy to operate, and easy to carry. The common sealing method of sealing machines is to use a motor to drive a needle and hook to sew the bag body. However, simple sewing is prone to leakage and lacks sufficient strength. In order to improve the sewing effect, operators will use multiple folds or multiple stitches. The former involves multiple folds at the bag opening, which is not only inconvenient to operate, but also increases the sewing difficulty of the handheld sealing machine and affects the overall size of the bag. The latter involves multiple stitches, which is not only cumbersome and inconvenient for secondary sewing operations, but also makes it difficult to ensure that the second stitch is parallel to the first stitch, and also affects the appearance. Utility Model Content

[0003] In view of the existing technology, the purpose of this utility model is to provide a double-needle double-thread hand-held bag sealing machine that performs simultaneous double-row stitching.

[0004] To achieve the above objectives, the technical solution adopted by this utility model is as follows: a double-needle double-thread handheld sealing machine, including a machine head, a lifting rod and a needle rod, a pressure plate at the end of the lifting rod, a needle divider on the needle rod, two sets of fixing holes and sewing needles on the needle divider, the needle divider being hinged to or fixed relative to the needle rod by radial screws, two waist-shaped needle holes on the pressure plate being opposite to the fixing holes on the needle divider, and a hook needle corresponding to the sewing needle inside the machine head, the hook needle including a needle body and a needle position adjustment structure, the needle position adjustment structure being used to adjust the position of the needle body corresponding to the sewing needle.

[0005] As a further feature of the above solution, the needle bar is located in the middle of the two waist-shaped needle holes, and the needle separator can be adjusted by loosening the radial screw and rotating the needle separator circumferentially relative to the needle bar to adjust the relative distance between the two needles.

[0006] As a further feature of the above solution, a thread feeder is also fixed on the side of the machine head. The thread feeder is equipped with two sets of winding bobbins, and a guide component is provided on the machine head. Each set of winding bobbins corresponds to a set of sewing needles.

[0007] As a further feature of the above solution, the machine head is also provided with feeding teeth, which are located on the machine head below the pressure plate and are positioned on the outer side relative to the two waist-shaped needle holes.

[0008] As a further feature of the above solution, the needle position adjustment structure includes a base mounted on the power rod shaft of the sewing machine head, a linkage rod on the base, a needle seat hinged on the linkage rod, a needle groove on the needle seat with a locking nut installed thereon, and the locking nut being threadedly connected to the needle seat to lock the needle body corresponding to the sewing needle onto the needle seat.

[0009] As a further provision of the above solution, the machine head is also provided with a wire cutter, which includes a fixed blade fixed to the side of the machine head and a movable blade that moves relative to the fixed blade. The machine head is also provided with a wire cutting groove.

[0010] Beneficial effects: This utility model of a double-needle double-thread handheld sealing machine features a separate needle structure and a double-needle sewing mechanism driven synchronously by the machine head. This allows for rapid double-needle double-thread sealing of bags. Furthermore, the separate needle component in this embodiment can be manually adjusted. By rotating the separate needle component and the corresponding bottom hook inside the machine head, the relative spacing between the two seams and the needle gap can be quickly adjusted, improving the sealing effect. It has good sealing practicality and can adapt to sealing and sewing bags with more different particle sizes. Attached Figure Description

[0011] Figure 1 This utility model relates to a handheld sealing machine.

[0012] Figure 2 This is a schematic diagram of the needle bar structure of the double-needle double-thread machine in this embodiment.

[0013] Figure 3 This is a schematic diagram of the hook and needle position adjustment structure in this embodiment.

[0014] Reference numerals: 1. Machine head; 12. Thread feeder; 13. Feeding teeth; 14. Winding spool; 15. Guide assembly; 2. Lifting rod; 21. Pressure plate; 22. Waist-shaped needle hole; 3. Needle bar; 31. Needle separator; 33. Radial screw; 41. Fixed blade; 42. Moving blade; 43. Thread cutting groove; 7. Hook needle; 71. Needle body; 72. Locking nut; 73. Needle seat; 74. Linkage rod; 75. Base; 8. Sewing needle. Detailed Implementation

[0015] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that, where there is no conflict, the embodiments and features described in these embodiments can be combined with each other.

[0016] like Figure 1-3The invention relates to a double-needle, double-thread handheld bag sealing machine. The main structure of the sealing machine includes a machine head 1, a motor structure, and a control handle. The user holds the control handle and folds the bag body, pressing it onto the sewing seat of the machine head 1. The user then lifts the pressure plate 21 by controlling the lifting rod 2 on the machine head 1, and then feeds the bag body in to hold it in place. During use, the thread feeder 12 on one side of the machine head 1 provides independent thread to the sewing needle 8. With the cooperation of the sewing needle 8 and the hook inside the machine head 1, the bag is sewn and sealed at the opening.

[0017] Furthermore, referring to the above structure, in this embodiment, a needle-separating component 31 is fixed to the needle bar 3 on the machine head 1 by a radial screw 33. The needle-separating component 31 is arranged laterally relative to the delivery direction of the bag body as follows: Figure 1 The two sets of needles 8 shown are staggered in the delivery direction. The purpose is that, under the extension and retraction of the needle rod 3 driven by the inner shaft of the machine head 1, the two needles 8 located on the needle divider 31 extend and retract synchronously to sew the thread, but the stitches of the thread sewn on the target bag body are staggered and misaligned. The needle divider 31, as set in this embodiment, can be rotated by loosening the radial screw 33, thereby driving the two needles 8 to rotate. It can be expected that the relative lateral and longitudinal spacing of the two needles 8 will change by adjustment. Its function is that the lateral spacing can adjust the relative distance between the two sewn threads, while the longitudinal spacing changes affect the misalignment state between the two needles. In actual use, the lateral and longitudinal positional relationship is synchronously linked for adjustment. Therefore, the optimal solution is to adjust it so that the landing point of the left needle is directly opposite the center position of the two needles on the right side. This is the best state for sealing effect and sewing strength.

[0018] It is worth noting that, when the position of the needle adjusting part 31 is rotated to adjust the position of the sewing needle 8, it is located inside the machine head 1 as follows: Figure 3 As shown, the hook 7 corresponding to the bottom of the sewing needle 8 needs to be adjusted by the needle position adjustment structure to adjust the circumferential angle and swing position of the needle body 71, such as... Figure 3 As shown, the hook 7 in this embodiment includes a base 75, a linkage rod 74, a needle seat 73, a locking nut 72, and a needle body 71. The base 75 is fixedly connected to the power rod shaft that drives the output rotation of the machine head 1 in conjunction with the linkage of the needle rod 3. The connection method is as follows: Figure 3 As shown, by fastening the base 75 of the U-shaped clamp structure to the power rod shaft with bolts, rotational power is transmitted, causing the hook 7 assembly to swing, as... Figure 3A linkage rod 74 is fixed to the base 75 shown. Further, in this embodiment, a needle holder 73 is hinged to the linkage rod 74 fixed to the base 75. The function of the needle holder 73 is to rotate in correspondence with the upper needle divider 31. As mentioned above, the position of the sewing needle 8 changes due to the rotation of the needle divider 31. However, the movement of the sewing needle 8 is vertical lifting and lowering, while the needle body 71 of the hook 7 swings. Therefore, simply adjusting the needle holder 73 would cause an angle problem between the swing of the needle body 71 and the hook tip of the needle body 71, making sewing impossible. Therefore, in this embodiment, the needle holder 73 is provided with a needle groove for mounting the needle body 71. After the needle body 71 is installed in the needle groove, the needle body 71 can rotate relative to the needle groove. The purpose of the rotation is to make the hook tip of the needle body 71 face the... The swing direction is consistent, and then the locking nut 72 is used to lock the needle body 71 relative to the needle seat 73. As described above, the needle position adjustment structure adjusts the needle body 71. In this embodiment, the needle position adjustment structure also includes a bolt structure for circumferentially fixing the needle seat 73 relative to the linkage rod 74. After the needle seat 73 is hinged and rotated to the required position, the bolt structure is locked and fixed by tightening. In this embodiment, the locking nut 72 is threaded and locked relative to the needle groove. By tightening the locking nut 72 relative to the needle seat 73, the needle body 71 is pressed and fixed, so that the needle body 71 and the needle seat 73 cannot rotate circumferentially. Furthermore, a bolt structure similar to the above can also be provided radially on the locking nut 72 for secondary fixing to improve the circumferential fixing strength.

[0019] In this embodiment, the hook 7 can be adjusted relative to the sewing needle 8 through the needle position adjustment structure, so that the corresponding position of the hook 7 can be adjusted accordingly, thereby ensuring the stability of sewing and preventing problems such as thread breakage. In addition, the adjustment of the sewing needle 8 in this embodiment also needs to be adjusted according to the actual groove size of the waist-shaped needle hole 22 on the pressure plate 21 through which the two sewing needles 8 pass, so as to avoid the sewing needle 8 hitting the pressure plate 21 and causing damage when it descends.

[0020] As described above, in a further embodiment, the center of the needle bar 3 and the needle seat 73 is located in the middle of the two waist-shaped needle holes 22. The needle separator 31 can adjust the relative distance between the two needles 8 by loosening the radial screw 33 and rotating it circumferentially relative to the needle bar 3.

[0021] As a further provision of the above scheme, a thread feeder 12 is also fixed on the side of the machine head 1. Two sets of winding bobbins 14 are provided on the thread feeder 12, and a guide component 15 is provided on the machine head 1. Each set of winding bobbins 14 corresponds to a set of sewing needles 8.

[0022] As a further provision of the above scheme, the machine head 1 is also provided with a feeding tooth 13. The feeding tooth 13 is located on the machine head 1 below the pressure plate 21, and the feeding tooth 13 is positioned on the outer side relative to the two waist-shaped needle holes 22. It is worth noting that the feeding tooth 13 is located at the bottom of the pressure plate 21, and is synchronized with the needle bar 3 through a linkage structure inside the machine head 1. Its function is to convey the bag body forward while sewing, which can be referred to as the internal structure of existing conventional sewing machine heads.

[0023] As a further provision of the above solution, the machine head 1 is also equipped with a thread cutter. The thread cutter includes a fixed blade 41 fixed to the side of the machine head 1 and a movable blade 42 that moves relative to the fixed blade 41. The machine head 1 is also equipped with a thread cutting groove 43. In this embodiment, the thread cutter is located at the front end of the pressure plate 21 on the machine head 1. In order to better utilize the thread cutting function, the machine head 1 in this embodiment is further equipped with a thread cutting groove 43. The bottom plate of the thread cutting groove 43 protrudes slightly relative to the machine head 1, so that the bag body will not get stuck between the fixed blade 41 and the movable blade 42 during the sewing process. Only when the bag body is sewn, the tail thread will get stuck in the thread cutting groove 43 under the downward pull of the bag body. With the shearing force of the movable blade 42 relative to the fixed blade 41, the tail thread is cut by the shearing force to realize the thread cutting function, avoiding accidental cutting and damage to the bag body. This structural setting ensures and facilitates the cutting of the tail thread after sewing.

[0024] Obviously, those skilled in the art can make various modifications and variations to this utility model without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of this utility model and its equivalents, this utility model also intends to include these modifications and variations.

Claims

1. A double-needle double-thread handheld sealing machine, comprising a machine head (1), characterized in that: The machine head (1) is also provided with a lifting rod (2) and a needle rod (3). The lifting rod (2) has a pressure plate (21) at its end. The needle rod (3) has a needle-separating component (31). The needle-separating component (31) has two sets of fixing holes and a sewing needle (8). The needle-separating component (31) is hinged to the needle rod (3) or fixedly mounted by a radial screw (33). The pressure plate (21) has two waist-shaped needle holes (22) that are opposite to the fixing holes on the needle-separating component (31). The machine head (1) is also provided with a hook (7) corresponding to the sewing needle (8). The hook (7) includes a needle body (71) and a needle position adjustment structure. The needle position adjustment structure is used to adjust the position of the needle body (71) corresponding to the sewing needle (8).

2. The double-needle double-thread handheld sealing machine according to claim 1, characterized in that: The needle bar (3) is located in the middle of the two waist-shaped needle holes (22). The needle separator (31) can be adjusted by loosening the radial screw (33) and rotating circumferentially relative to the needle bar (3) to adjust the relative distance between the two needles (8).

3. The double-needle double-thread handheld sealing machine according to claim 1, characterized in that: The needle position adjustment structure includes a base (75) mounted on the power rod shaft of the machine head (1). A linkage rod (74) is fixed on the base (75). A needle seat (73) is hinged on the linkage rod (74). A needle groove is provided on the needle seat (73) and a locking nut (72) is installed. The locking nut (72) is threaded to the needle seat (73) and is used to lock the needle body (71) corresponding to the sewing needle (8) on the needle seat (73).

4. A double-needle, double-thread handheld sealing machine according to claim 1, characterized in that: The side of the machine head (1) is also fixed with a wire feeder (12), and two sets of winding drums (14) are provided on the wire feeder (12). A guide component (15) is provided on the machine head (1). Each set of winding drums (14) corresponds to a set of sewing needles (8).

5. A double-needle, double-thread handheld sealing machine according to claim 1, characterized in that: The machine head (1) is also provided with a feeding tooth (13), which is located on the machine head (1) below the pressure plate (21) and is positioned on the outer side relative to the two waist-shaped needle holes (22).

6. A double-needle, double-thread handheld sealing machine according to claim 1, characterized in that: The machine head (1) is also provided with a wire cutter, which includes a fixed blade (41) fixed on the side of the machine head (1) and a movable blade (42) that moves relative to the fixed blade (41). The machine head (1) is also provided with a wire cutting groove (43).

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