Automatic tying machine

Abstract

The utility model relates to the technical field of tying machines, and discloses an automatic tying machine which comprises a rack, a guide plate is arranged on the rack, a limiting bayonet is formed in the middle of the guide plate, a buckle containing groove is formed in the rear end of the limiting bayonet, and a clamping mechanism matched with the limiting bayonet is hinged to the guide plate at the limiting bayonet. The guide plate is provided with a nail pushing rod matched with the buckle containing groove and a pushing rod matched with the clamping mechanism, and a driving mechanism is arranged below the guide plate. The automatic tying machine is stable in tying quality and low in production cost, sliding of the pushing rod and the nail pushing rod is controlled through the driving mechanism, the driving mechanism is matched with the clamping mechanism and the buckle containing groove, the automatic tying function is achieved, the labor intensity of manual operation can be effectively reduced, and compared with a manual tying machine and an automatic tying machine, the automatic tying machine is simpler and more convenient to operate, and the working efficiency is improved. When the packaging bag is tied, the bag opening of the packaging bag only needs to be placed in the limiting bayonet on the guide plate, other tying processes are automatically completed by a machine, and operation steps are greatly simplified.

Description

Technical Field

[0001] The utility model relates to the technical field of bag-tying machines, and specifically to an automatic bag-tying machine. Background Art

[0002] With the continuous popularization of various disposable packaging bags, bag-tying machines are more and more widely used in the fields of food, hardware, plastic products, etc. At present, the bag-tying machines on the market are mainly divided into two types: manual and automatic. However, manual bag-tying machines still occupy a quite large market share, although they have many deficiencies.

[0003] First of all, the operation process of the manual bag-tying machine requires workers to manually insert the bag mouth of the packaging bag into the bag-tying device of the bag-tying machine, and then manually tighten the bag mouth. This method is not only time-consuming and laborious, but also easily causes worker fatigue and affects work efficiency. Secondly, the bag-tying quality of the manual bag-tying machine is unstable. Due to the limited accuracy of manual operation, problems such as loose bag-tying and inaccurate bag-tying position are likely to occur, resulting in poor sealing performance of the packaging bag and affecting the preservation and transportation of products. In addition, the applicable range of the manual bag-tying machine is limited. For packaging bags of different sizes and materials, the manual bag-tying machine often requires cumbersome adjustments, and even cannot adapt to some special material packaging bags, restricting its application in actual production. Finally, the production cost of the manual bag-tying machine is relatively high. Due to the low efficiency of manual operation, a large amount of labor cost needs to be invested, increasing the production cost of the enterprise.

[0004] In summary, the existing manual bag-tying machines have many deficiencies such as cumbersome operation, low efficiency, unstable bag-tying quality, and limited applicable range. There is an urgent need for a bag-tying machine with higher automation and faster working efficiency to meet the actual production needs. Summary of the Utility Model

[0005] The purpose of the utility model is to provide an automatic bag-tying machine that can save manpower and material resources to a certain extent for the above problems.

[0006] To achieve the above purpose, the utility model discloses an automatic bag-tying machine, including a frame. Its structural feature is that a guide plate is arranged on the upper part of the frame, a limit bayonet is arranged in the middle of the guide plate, and a buckle placement groove is arranged at the rear end of the limit bayonet. A clamping mechanism adapted to the limit bayonet is hinged on the guide plate at the limit bayonet. A push pin rod matched with the buckle placement groove and a push rod matched with the clamping mechanism are arranged on the guide plate. A driving mechanism for controlling the push rod and the push pin rod to slide along the front and rear directions of the guide plate is arranged below the guide plate.

[0007] After adopting the above structure, the driving mechanism is used to control the sliding of the pushing rod and the nail-pushing rod and cooperate with the clamping mechanism and the buckle placement groove, realizing the function of automatic bag tying, greatly improving the work efficiency, and effectively reducing the labor intensity of manual operation. Through the cooperation of the limit bayonet and the clamping mechanism, the position and tightness of the bag tie can be accurately controlled, ensuring the stable and reliable quality of the bag tie for each packaging bag, and avoiding product leakage and damage caused by loose bag ties. Compared with the manual bag tying machine, the operation of the automatic bag tying machine is more convenient. Only need to put the bag mouth of the packaging bag into the limit bayonet on the guide plate, and the rest of the bag tying process is automatically completed by the machine, greatly simplifying the operation steps.

[0008] Preferably, the guide plate is a rectangular plate arranged in the horizontal direction, and a limit bayonet penetrating the left side is provided on the plate body near the front end. A limit groove cooperating with the nail-pushing rod is provided on the inner side wall of the limit bayonet. The notch at the limit bayonet can facilitate the staff to place the packaging bag on the guide plate for bag tying work, and can more accurately control the position of the bag tie.

[0009] Preferably, the buckle placement groove is vertically arranged on the guide plate at the rear side of the limit bayonet and is communicated with the limit groove. By communicating the buckle placement groove with the limit groove, the buckle can be accurately aligned with the limit groove in the vertical direction, ensuring that the buckle can accurately insert along the limit groove and fix the bag mouth of the packaging bag, improving the accuracy and stability of the bag tie.

[0010] Preferably, the clamping mechanism includes two upper and lower baffles with the same shape and a limit block fixed between the upper baffle and the lower baffle. The sizes of the upper and lower baffles are adapted to the size of the limit bayonet. By making the sizes of the upper and lower baffles adapted to the limit bayonet, the tightness of the bag tie can be accurately controlled, ensuring the stable and reliable quality of the bag tie for each packaging bag, and avoiding product leakage and damage caused by loose bag ties.

[0011] Preferably, the limiting block is arranged along the length direction of the baffle, and the inner end edge of the limiting block is close to and parallel to the inner side edge of the baffle. The outer end edge of the limiting block is an inclined side edge and extends towards the outer end edge of the baffle. The distance between the upper and lower baffles is greater than the thickness of the guide plate, and the rear ends of the two baffles are hinged to the guide plate. The inner end edges of the upper and lower baffles are provided with relatively bent side edges, and the size between the side edges matches the push pin rod. A return spring connected to the driving mechanism is arranged on the body at the outer end of the upper and lower baffles. By arranging the inner end edge of the limiting block close to and parallel to the inner side edge of the baffle and cooperating with the push pin rod, the positioning accuracy of the clamping mechanism in the horizontal direction can be ensured, thereby improving the stability and reliability of the entire device. The outer end edge of the limiting block is an inclined side edge and extends towards the outer end edge of the baffle, which can cooperate with the push rod to make the two baffles open and close in the horizontal direction at the limiting bayonet, improving the tightness and accuracy of the tying. By cooperating the return spring with the driving mechanism, the clamping mechanism can be opened from the limiting bayonet to facilitate putting the packaging bag for tying.

[0012] Preferably, two chutes respectively matching the push pin rod and the push rod are arranged at intervals on the lower end surface of the guide plate at the rear end of the limiting bayonet. The two chutes are arranged at intervals along the width direction of the guide plate, and the front and rear ends of the two chutes respectively penetrate through the rear end surface of the limiting bayonet and the rear end surface of the guide plate.

[0013] Preferably, the driving mechanism includes a driving motor fixed to the rear of the frame in the vertical direction, and the driving rod of the driving motor is arranged upward. A first driving link is arranged on the driving rod of the driving motor, and the other end of the first driving link far from the driving rod is hinged with a second driving link. The other end of the second driving link is hinged with a connecting block. The left and right ends of the upper end surface of the connecting block are respectively fixed to the lower ends of the push rod and the push pin rod. A threaded hole for installing the return spring is arranged on the side wall of the connecting block. By controlling the sliding of the push rod and the push pin rod through the driving mechanism and cooperating with the clamping mechanism and the buckle placement groove, the function of automatic tying is realized and the working efficiency is greatly improved.

[0014] Preferably, a mounting seat is arranged on the left side wall of the guide plate at the rear of the limiting bayonet. A screw rod arranged along the front and rear direction of the guide plate is screwed on the mounting seat, and a rubber top block cooperating with the limiting block is arranged at the front end of the screw rod. By using the rubber top block and the limiting block, the service life of the clamping mechanism can be effectively improved.

[0015] In summary, the beneficial effects of the present utility model are as follows: The present utility model has a high degree of automation, stable bag-tying quality and low production cost. By means of a driving mechanism to control the sliding of a pushing rod and a nail-pushing rod and cooperate with a clamping mechanism and a snap-fastener placement groove, the function of automatic bag-tying is realized, the working efficiency is greatly improved, and the labor intensity of manual operation can be effectively reduced. Moreover, through the cooperation of a limit bayonet and a clamping mechanism, the position and tightness of the bag-tying can be accurately controlled, ensuring that the bag-tying quality of each packaging bag is stable and reliable, avoiding product leakage and damage caused by loose bag-tying. Compared with a manual bag-tying machine, the operation of the automatic bag-tying machine is simpler. Only need to put the bag mouth of the packaging bag into the limit bayonet on the guide plate, and the rest of the bag-tying process is automatically completed by the machine, greatly simplifying the operation steps. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a schematic structural diagram of the whole of the present utility model;

[0017] Figure 2 is a schematic structural diagram of the driving mechanism of the present utility model and when the clamping mechanism is removed;

[0018] Figure 3 is a top-view structural diagram of the clamping mechanism on the guide plate of the present utility model when it is opened;

[0019] Figure 4 is a top-view structural diagram of the clamping mechanism on the guide plate of the present utility model when it is closed;

[0020] Figure 5 is a cross-sectional structural diagram of the clamping mechanism on the guide plate of the present utility model when it is closed;

[0021] Figure 6 is a cross-sectional structural diagram of the clamping mechanism on the guide plate of the present utility model when it is opened and closed.

[0022] In the figure: 1, frame; 2, guide plate; 3, limit bayonet; 4, snap-fastener placement groove; 5, clamping mechanism; 6, nail-pushing rod; 7, pushing rod; 8, driving mechanism; 9, limit groove; 10, upper baffle; 11, lower baffle; 12, limit block; 13, return spring; 14, chute; 15, driving motor; 16, first driving connecting rod; 17, second driving connecting rod; 18, connecting block; 19, threaded hole; 20, mounting seat; 21, rubber top block. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0023] The following combines the drawings and embodiments to further describe in detail the specific embodiments of the present utility model. The following embodiments are used to illustrate the present utility model, but are not used to limit the scope of the present utility model.

[0024] In the description of the present application, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present application.

[0025] In the description of the present application, it should be noted that unless otherwise clearly specified and limited, the terms "installed", "connected", and "coupled" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0026] The following is a description of the preferred embodiments of the present utility model in conjunction with the drawings.

[0027] As Figures 1 - 3 shown, the present utility model includes a frame 1. A guide plate 2 is provided on the upper part of the frame 1. In design, the frame 1 is a rectangular shell structure composed of multiple support beams and a plate body. The above-mentioned guide plate 2 is a rectangular plate fixed on the frame 1 in the horizontal direction. The front end of the rectangular plate extends out of the front end face of the frame 1. A limit bayonet 3 is provided in the middle of the guide plate 2, and a buckle placement groove 4 is provided at the rear end of the limit bayonet 3. During production, a limit bayonet 3 penetrating the left side is provided on the plate body near the front end position of the guide plate 2. Usually, the limit bayonet 3 is a rectangular notch. In this way, through the setting of the notch at the limit bayonet 3, it is convenient for the staff to place the packaging bag on the guide plate 2 for tying the mouth. At the same time, a limit groove 9 is provided on the inner side wall of the limit bayonet 3. The limit groove 9 is arranged along the length direction of the guide plate 2. The above-mentioned buckle placement groove 4 is vertically and perpendicularly arranged on the guide plate 2 at the rear side of the limit bayonet 3 and is communicated with the limit groove 9. In this way, by communicating the buckle placement groove 4 with the limit groove 9, the buckle can accurately face the limit groove 9 in the vertical direction, ensuring that the buckle can accurately insert along the limit groove 9 and fix the mouth of the packaging bag, improving the accuracy and stability of tying the mouth. Of course, the above-mentioned buckle placement groove 4 is a well-known structure and will not be elaborated here.

[0028] As Figure 1 and Figures 3 - 6As shown, in a preferred embodiment of the present utility model, a clamping mechanism 5 adapted to the limit bayonet 3 is hinged on the guide plate 2 at the limit bayonet 3. A push pin rod 6 adapted to the buckle placement groove 4 and a push rod 7 adapted to the clamping mechanism 5 are provided on the guide plate 2. During design, two chutes 14 respectively matching the push pin rod 6 and the push rod 7 are spacedly arranged on the lower end surface of the guide plate 2 at the rear end of the limit bayonet 3. The push pin rod 6 and the push rod 7 are bar-shaped rod structures and their lengths are greater than the length of the limit bayonet 3. The above two chutes 14 are spacedly arranged along the width direction of the guide plate 2, and the front and rear ends of the two chutes 14 respectively penetrate through the rear end surface of the limit bayonet 3 and the rear end surface of the guide plate 2. In this way, the buckle can be pushed out by the push pin rod 6 and move along the limit groove 9. The above clamping mechanism 5 includes two upper and lower baffles with the same shape and a limit block 12 fixed between the upper baffle 10 and the lower baffle 11. Among them, the sizes of the upper and lower baffles are adapted to the size of the limit bayonet 3. In this way, by making the sizes of the upper and lower baffles adapted to the limit bayonet 3, the tightness of the tying can be precisely controlled.

[0029] As Figure 5 and Figure 6 shown, in another preferred embodiment of the present utility model, the above limit block 12 is arranged along the length direction of the baffle, and the inner edge of the limit block 12 is close to the inner side edge of the baffle and is parallel to the inner side edge. The outer edge of the limit block 12 is an inclined side edge and extends towards the outer edge of the baffle, so that the limit block 12 forms a triangular-like block structure with a wide front end and a narrow rear end. At the same time, the interval between the upper and lower baffles is greater than the thickness of the guide plate 2, and the rear ends of the two baffles are respectively located on the upper and lower sides of the guide plate 2 and are hinged on the guide plate 2 through hinge bolts. The inner edges of the upper and lower baffles are provided with relatively bent side edges, and the size between the side edges matches the push pin rod 6 and the limit groove 9. This design also facilitates the precise positioning of the bayonet in the buckle placement groove 4 and further improves the stability. During design, a return spring 13 connected to the driving mechanism 8 is also provided on the outer end portions of the upper and lower baffles. In this way, by setting the inner edge of the limit block 12 close to the inner side edge of the baffle and being parallel to the inner side edge and cooperating with the push pin rod 6, the positioning accuracy of the clamping mechanism 5 in the horizontal direction can be ensured, thereby improving the stability and reliability of the entire device. The outer edge of the limit block 12 is an inclined side edge and extends towards the outer edge of the baffle, and can cooperate with the push rod 7 to make the two baffles open and close horizontally at the limit bayonet 3, effectively pressing the bayonet and improving the tightness and accuracy of the tying.

[0030] As Figures 3 - 5As shown in the figure, in a preferred embodiment of the present utility model, a driving mechanism 8 for controlling the sliding of the pushing rod 7 and the nail pushing rod 6 along the front and rear direction of the guiding plate 2 is provided below the guiding plate 2. The driving mechanism 8 includes a driving motor 15 fixedly installed at the rear of the frame 1 in the vertical direction, and the driving rod of the driving motor 15 is arranged upward. A first driving link 16 arranged in the horizontal direction is provided on the driving rod of the driving motor 15. The upper side of the other end of the first driving link 16 away from the driving rod is hinged with a second driving link 17 arranged in the horizontal direction, and the other end of the second driving link 17 is hinged with a connecting block 18. The left and right ends of the upper end surface of the connecting block 18 are respectively fixed on the lower ends of the pushing rod 7 and the nail pushing rod 6. In design, the connecting block 18 is a rectangular plate structure and the width is greater than the distance between the pushing rod 7 and the nail pushing rod 6, and a threaded hole 19 for installing a return spring 13 is provided on the side wall of the connecting block 18. Thus, the driving mechanism 8 is used to control the sliding of the pushing rod 7 and the nail pushing rod 6 and cooperate with the clamping mechanism 5 and the buckle placement groove 4, so as to realize the function of automatic tying and greatly improve the working efficiency. By cooperating the return spring 13 with the driving mechanism 8, the clamping mechanism 5 can be opened from the limit bayonet 3 to facilitate the placement of the packaging bag for tying. Of course, the driving motor 15 can also be replaced by a cylinder to directly push the connecting block 18, so as to control the pushing rod 7 and the nail pushing rod 6 to complete the tying work.

[0031] As Figures 3 - 6 shown, in another preferred embodiment of the present utility model, a mounting seat 20 arranged in the horizontal direction is fixedly connected to the left side wall of the guiding plate 2 at the rear of the limit bayonet 3, and a screw rod arranged in the front and rear direction of the guiding plate 2 is screwed on the mounting seat 20. A rubber top block 21 matched with the limit block 12 is also provided at the front end of the screw rod. Thus, through the rubber top block 21 and the limit block 12, the service life of the clamping mechanism 5 can be effectively improved.

[0032] The above embodiments are only used to illustrate the technical solutions of the present utility model, rather than to limit it; although the present utility model has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present utility model.

Claims

1. An automatic bag-tying machine, comprising a frame (1), characterized in that: A guide plate (2) is provided at the upper part of the frame (1). A limit bayonet (3) is provided in the middle of the guide plate (2), and a snap placement groove (4) is provided at the rear end of the limit bayonet (3). A clamping mechanism (5) adapted to the limit bayonet (3) is hinged on the guide plate (2) at the limit bayonet (3). A push pin rod (6) cooperating with the snap placement groove (4) and a push rod (7) cooperating with the clamping mechanism (5) are provided on the guide plate (2). A driving mechanism (8) for controlling the push rod (7) and the push pin rod (6) to slide in the front-back direction along the guide plate (2) is provided below the guide plate (2).

2. The automatic bag-tying machine according to claim 1, wherein: The guide plate (2) is a rectangular plate arranged in the horizontal direction, and a limit bayonet (3) penetrating the left side is provided on the plate body near the front end position. A limit groove (9) cooperating with the push pin rod (6) is provided on the inner side wall of the limit bayonet (3).

3. The automatic bag-tying machine according to claim 1 or 2, characterized in that: The snap placement groove (4) is vertically and perpendicularly provided on the guide plate (2) at the rear side of the limit bayonet (3) and is communicated with the limit groove (9).

4. The automatic bag-tying machine according to claim 1, wherein: The clamping mechanism (5) includes upper and lower two baffles with the same shape and a limit block (12) fixed between the upper baffle (10) and the lower baffle (11). The sizes of the upper and lower two baffles are adapted to the size of the limit bayonet (3).

5. The automatic bag-tying machine according to claim 4, characterized in that: The limit block (12) is arranged along the length direction of the baffle, and the inner end edge of the limit block (12) is close to and parallel to the inner side edge of the baffle. The outer end edge of the limit block (12) is an inclined side edge and extends towards the outer end edge of the baffle. The interval between the upper and lower two baffles is greater than the thickness of the guide plate (2), and the rear ends of the two baffles are hinged on the guide plate (2). The inner end edges of the upper and lower two baffles are provided with relatively bent side edges, and the size between the side edges is matched with the push pin rod (6). A return spring (13) connected to the driving mechanism (8) is provided on the body at the outer end of the upper and lower two baffles.

6. The automatic bag-tying machine according to claim 1, wherein: Two chutes (14) respectively matched with the push pin rod (6) and the push rod (7) are spacedly arranged on the lower end surface of the guide plate (2) at the rear end of the limit bayonet (3). The two chutes (14) are spacedly arranged along the width direction of the guide plate (2), and the front and rear ends of the two chutes (14) respectively penetrate the rear end surface of the limit bayonet (3) and the rear end surface of the guide plate (2).

7. The automatic bag-tying machine according to claim 1, wherein: The driving mechanism (8) includes a driving motor (15) fixedly arranged at the rear part of the frame (1) in the vertical direction, and the driving rod of the driving motor (15) is arranged upward. A first driving link (16) is provided on the driving rod of the driving motor (15), and the other end of the first driving link (16) far from the driving rod is hinged with a second driving link (17). The other end of the second driving link (17) is hinged with a connecting block (18). The left and right ends of the upper end surface of the connecting block (18) are respectively fixed on the lower ends of the push rod (7) and the push pin rod (6). A threaded hole (19) for installing the return spring (13) is provided on the side wall of the connecting block (18).

8. The automatic bag-tying machine according to any one of claims 1-7, characterized in that: On the left side wall of the rear guide plate (2) of the limit bayonet (3), a mounting seat (20) is provided. A screw rod is screwed on the mounting seat (20) and is arranged in the front-back direction of the guide plate (2). The front end of the screw rod is provided with a rubber top block (21) that cooperates with the limit block (12).

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