Telescopic bag opening expanding mechanism

Abstract

The utility model relates to the technical field of automatic packaging machines, in particular to a telescopic bag opening expanding mechanism. The bag opening device comprises two bag opening supporting plates which are symmetrically arranged left and right, the upper ends of the two bag opening supporting plates are connected with one end of a transmission rod, the other end of the transmission rod is rotationally connected with one end of a transmission arm through a pin shaft, the center position of the other end of the transmission arm is sleeved with the driving end of a driving motor, and the driving motor is fixed to a mounting support. The mounting bracket is detachably connected with a bearing seat through a connecting piece, a connecting screw rod is rotationally connected into the bearing seat through a bearing, and one end of the connecting screw rod penetrates through the mounting bracket and then is connected with a guide shaft through a thread. The driving mechanism can drive the bag opening supporting plate to stretch into the bag opening and horizontally open the bag opening, it is guaranteed that the bag opening can be fully opened for heat sealing, and the situation that heat sealing fails due to the fact that the bag opening is wrinkled is avoided; the opening distance of the bag opening supporting plates can be adjusted according to needs, and the use range is widened.

Description

Technical Field

[0001] The utility model relates to the technical field of automatic packaging machines, in particular to a telescopic bag opening propping mechanism. Background Art

[0002] With the development of industrial automation, more and more companies are using automated equipment to replace manual packaging in the process of using packaging bags. In one of the links of automated packaging, after the material is put into the packaging bag, the packaging bag mouth needs to be fully opened to facilitate the subsequent heat sealing operation of the bag mouth to avoid heat sealing failure due to wrinkles on the bag mouth.

[0003] At present, the existing bag opening opening mechanism generally uses two opening parts that can move horizontally to open the bag opening, and the depth of the opening parts inserted into the bag opening remains unchanged. Because the packaging bag is flexible, it is inevitable that the bag opening will swell and deform after the product is loaded. The opening parts that can only move horizontally may not be able to effectively open the bag opening, and the heat seal failure may occur easily due to wrinkles on the bag opening. Utility Model Content

[0004] In view of the shortcomings of the above-mentioned existing production technology, the present application provides a telescopic bag opening opening mechanism, which can extend into the bag opening and horizontally open the bag opening to ensure that the bag opening can be fully opened for heat sealing, thereby avoiding the occurrence of heat sealing failure due to wrinkles on the bag opening.

[0005] The technical solution adopted by the utility model is as follows:

[0006] The telescopic bag opening mechanism comprises two bag opening support plates which are symmetrically arranged on the left and right, the upper ends of the two bag opening support plates are connected to one end of a transmission rod, the other end of the transmission rod is rotatably connected to one end of a transmission arm through a pin shaft, the center position of the other end of the transmission arm is sleeved on the driving end of a driving motor, and the driving motor is fixed on a mounting bracket; the mounting bracket is detachably connected to a bearing seat through a connecting piece, and a connecting screw is rotatably connected to the bearing seat through a bearing, one end of the connecting screw passes through the mounting bracket and is connected to a guide shaft through a thread, the guide shaft is sleeved on the transmission rod and can slide axially along the transmission rod, the guide shaft guides the movement of the transmission rod, the transmission rod can slide back and forth along the guide shaft, and the transmission rod can also drive the guide shaft to rotate.

[0007] Furthermore, the lower ends of the two bag opening support plates are the opening parts, which can be inserted into the bag opening and open the bag opening, and the upper ends of the two bag opening support plates are the transmission parts, which are connected to one end of the transmission rod.

[0008] Furthermore, a limit block is provided on the outer ring of the other end of the transmission arm, and the limit block is detachably connected to the mounting bracket through a connecting piece. A limit groove is provided on the limit block, and the transmission arm is located in the limit groove and can rotate within the range of the limit groove. The front and rear end faces of the limit groove can contact the side of the transmission arm to form a limit for the transmission arm.

[0009] Furthermore, the diameter of the head end of the connecting screw is larger than the diameter of the inner hole of the bearing, and the head end of the connecting screw can prevent the connecting screw from escaping from the inner hole of the bearing.

[0010] Furthermore, the mounting bracket is slidably connected to the mounting transverse plate, and the mounting bracket can slide left and right along the mounting transverse plate to adjust the position.

[0011] Furthermore, an adjusting slot is arranged along the length direction of the mounting cross plate, a mounting folding plate formed by bending is arranged at the upper end of the mounting bracket, two adjusting sliders are arranged at the upper end of the mounting folding plate, and the two adjusting sliders are slidably connected in the adjusting slot.

[0012] The beneficial effects of the utility model are as follows:

[0013] The utility model discloses a bag opening support plate with compact structure and reasonable structure, is easy to operate, and the driving mechanism can drive the bag opening support plate to extend into the bag opening and horizontally open the bag opening, so as to ensure that the bag opening can be fully opened for heat sealing, and the heat sealing failure caused by wrinkles on the bag opening can be avoided; the opening spacing of the bag opening support plate can be adjusted according to needs, thereby expanding the scope of use. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is the front view of the utility model.

[0015] Figure 2 It is the rear view of the utility model.

[0016] Figure 3 for Figure 2 Enlarged view of point A in the middle.

[0017] Among them: 1. Install the horizontal plate; 2. Install the bracket; 3. The bag mouth support plate; 4. The transmission rod; 5. The guide shaft; 6. The pin shaft; 7. The transmission arm; 8. The limit block; 9. The driving motor; 10. The limit groove; 11. The connecting screw; 12. The bearing; 13. The bearing seat; 14. The installation folding plate; 15. The adjusting slider; 16. The adjusting slide groove. DETAILED DESCRIPTION

[0018] The specific implementation of the present utility model is described below in conjunction with the accompanying drawings.

[0019] like Figure 1 and Figure 2As shown, the telescopic bag opening opening mechanism includes two bag opening support plates 3 arranged symmetrically on the left and right, the lower ends of the two bag opening support plates 3 are the opening parts, which can be inserted into the bag opening and open the bag opening, and the upper ends of the two bag opening support plates 3 are the transmission parts, which are connected to one end of the transmission rod 4. The other end of the transmission rod 4 is rotatably connected to one end of the transmission arm 7 through the pin shaft 6, and the center position of the other end of the transmission arm 7 is sleeved with the driving end of the driving motor 9, and the driving motor 9 is fixed on the mounting bracket 2. When the driving motor 9 is working, it can drive the transmission arm 7 to rotate, and the transmission arm 7 drives the transmission rod 4 to move accordingly, and the transmission rod 4 can drive the bag opening support plate 3 to telescopically move in the radial direction and rotate in the circumferential direction at the same time.

[0020] like Figure 1 and Figure 2 As shown, a limit block 8 is sleeved on the outer ring of the other end of the transmission arm 7, and the limit block 8 is detachably connected to the mounting bracket 2 through a connecting piece. A limit groove 10 is arranged on the limit block 8, and the transmission arm 7 is located in the limit groove 10 and can rotate within the range of the limit groove 10, and the front and rear end surfaces of the limit groove 10 can contact the side of the transmission arm 7 to limit the transmission arm 7.

[0021] like Figure 2 and Figure 3 As shown, the mounting bracket 2 is detachably connected to the bearing seat 13 through a connecting piece, and the bearing seat 13 is rotatably connected to the connecting screw 11 through the bearing 12. One end of the connecting screw 11 passes through the mounting bracket 2 and is connected to the guide shaft 5 through a thread. The guide shaft 5 is sleeved on the transmission rod 4 and can slide axially along the transmission rod 4. The guide shaft 5 guides the movement of the transmission rod 4, and the transmission rod 4 can slide forward and backward along the guide shaft 5. At the same time, the transmission rod 4 can also drive the guide shaft 5 to rotate.

[0022] like Figure 3 As shown, the diameter of the head end of the connecting screw 11 is larger than the diameter of the inner hole of the bearing 12 , and the head end of the connecting screw 11 can prevent the connecting screw 11 from escaping from the inner hole of the bearing 12 .

[0023] like Figure 1 and Figure 2 As shown, the mounting bracket 2 is slidably connected to the mounting cross plate 1, and the mounting bracket 2 can slide left and right along the mounting cross plate 1 to adjust the position. When in use, the spacing between the two bag opening support plates 3 is adjusted by the positions of the two mounting brackets 2 on the mounting cross plate 1, so as to be suitable for the opening operation of bags of different sizes.

[0024] like Figure 1 and Figure 2 As shown, an adjusting slot 16 is provided on the mounting cross plate 1 along the length direction, a bent mounting folding plate 14 is provided on the upper end of the mounting bracket 2, two adjusting sliders 15 are provided on the upper end of the mounting folding plate 14, and the two adjusting sliders 15 are slidably connected in the adjusting slot 16.

[0025] The working principle of the utility model is: before working, first adjust the distance between the two mounting brackets 2 according to the size of the bag opening of the packaging bag, and then perform the bag opening opening operation. When performing the bag opening opening operation, the driving motor 9 drives the transmission arm 7 to rotate, and the transmission arm 7 drives the transmission rod 4 to move accordingly, and the transmission rod 4 can drive the bag opening support plate 3 to rotate and open in the circumferential direction, thereby opening the bag opening. At the same time, the transmission rod 4 also drives the bag opening support plate 3 to move radially, ensuring that the bag opening support plate 3 can extend into the bulging and deformed bag opening, ensuring that the bag opening can be fully opened for heat sealing, and avoiding the occurrence of heat sealing failure due to bag opening wrinkles.

[0026] The above description is an explanation of the utility model, not a limitation of the utility model. The scope of the utility model is defined by the claims. Any form of modification can be made within the protection scope of the utility model.

Claims

1. A telescopic bag opening opening mechanism, comprising two bag opening opening opening support plates (3) arranged symmetrically, characterized in that: The upper ends of the two bag opening support plates (3) are connected to one end of a transmission rod (4); the other end of the transmission rod (4) is rotatably connected to one end of a transmission arm (7) through a pin shaft (6); the other end of the transmission arm (7) is sleeved with the driving end of a driving motor (9) at the center position; the driving motor (9) is fixed on the mounting bracket (2); the mounting bracket (2) is detachably connected to a bearing seat (13) through a connecting piece; the bearing seat (13) is rotatably connected to a connecting screw rod (11) through a bearing (12); one end of the connecting screw rod (11) passes through the mounting bracket (2) and is connected to a guide shaft (5) through a thread; the guide shaft (5) is sleeved on the transmission rod (4) and can slide axially along the transmission rod (4); the guide shaft (5) forms a guiding effect on the movement of the transmission rod (4); the transmission rod (4) can slide forward and backward along the guide shaft (5); and the transmission rod (4) can also drive the guide shaft (5) to rotate.

2. The telescopic bag opening opening mechanism according to claim 1, characterized in that: The lower ends of the two bag opening support plates (3) are opening parts, which can be inserted into the bag opening and open the bag opening; the upper ends of the two bag opening support plates (3) are transmission parts, which are connected to one end of the transmission rod (4).

3. The telescopic bag opening opening mechanism according to claim 2, characterized in that: A limit block (8) is sleeved on the outer ring of the other end of the transmission arm (7), and the limit block (8) is detachably connected to the mounting bracket (2) through a connecting piece. A limit groove (10) is provided on the limit block (8), and the transmission arm (7) is located in the limit groove (10) and can rotate within the range of the limit groove (10), and the front and rear end surfaces of the limit groove (10) can contact the side of the transmission arm (7) to limit the transmission arm (7).

4. The telescopic bag opening opening mechanism according to claim 3, characterized in that: The diameter of the head end of the connecting screw (11) is larger than the diameter of the inner hole of the bearing (12), and the head end of the connecting screw (11) can prevent the connecting screw (11) from escaping from the inner hole of the bearing (12).

5. The telescopic bag opening opening mechanism according to claim 4, characterized in that: The mounting bracket (2) is slidably connected to the mounting transverse plate (1), and the mounting bracket (2) can slide left and right along the mounting transverse plate (1) to adjust its position.

6. The telescopic bag opening opening mechanism according to claim 5, characterized in that: An adjusting slide groove (16) is arranged on the mounting cross plate (1) along the length direction, a mounting folding plate (14) formed by bending is arranged on the upper end of the mounting bracket (2), two adjusting sliders (15) are arranged on the upper end of the mounting folding plate (14), and the two adjusting sliders (15) are slidably connected in the adjusting slide groove (16).

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