Plastic slitting machine for packaging bag processing

Abstract

The utility model relates to the field of food packaging bag processing, and discloses a plastic slitting machine for packaging bag processing, which comprises a workbench, the right side surface of the workbench is fixedly connected with a fixing frame, the outer side wall of the fixing frame is fixedly connected with a motor, and an output shaft of the motor is fixedly connected with a rotating rod. A plurality of sets of slitting cutters are slidably connected to the surface of the rotating rod, a guide assembly is arranged on the surface of the right side of the workbench, a variable-pitch assembly is arranged at the top end of the fixing frame, and a rotating ring is fixedly connected to the bottom end of the outer wall of the connecting rod. According to the utility model, the straight groove in the middle and the inclined grooves on the two sides of the guide groove uniquely designed on the variable-pitch plate can enable the connecting rod to synchronously or differentially move when the connecting rod slides, so that the rotating ring is driven to enable the slitting cutters to accurately slide on the rotating rod, and the design allows the distance between the slitting cutters to be accurately and flexibly adjusted; and both small-amplitude fine adjustment and large-amplitude pitch change can be realized easily.

Description

TECHNICAL FIELD

[0001] The utility model relates to food packaging bag processing field especially packaging bag processing plastic slitting machine. BACKGROUND

[0002] Food packaging bag is used for packing food various bags, food packaging bag's material quality is various, the common has plastic (such as polyethylene, polypropylene etc.), paper plastic composite, aluminum foil composite etc., different material quality is suitable for different types of food, to satisfy various protection and function demand.

[0003] In food packaging industry, food packaging bag processing slitting machine is the key equipment to realize packaging bag production automation, high efficiency, along with the increasing richness of food types and the increasing demand of market to packaging individualization, food packaging bag's specification and style also become diversification.

[0004] At present, the existing food packaging bag processing slitting machine has some deficiencies: on the one hand, the slitting knife of part slitting machine is adjusted according to the width of packaging bag, most of which need to be disassembled by special tool to adjust, which cannot be adjusted quickly and is inconvenient during adjustment, on the other hand, part slitting machine lacks effective guiding measures, which cannot effectively fix the position of packaging bag when processing packaging bag of different width, causing the packaging bag to deviate during slitting process, increasing the rate of defective products and reducing production efficiency, therefore, a packaging bag processing plastic slitting machine is proposed to solve the above problems. UTILITY MODEL CONTENTS

[0005] In order to make up for the above shortcomings, the utility model provides a packaging bag processing plastic slitting machine, which aims to improve the problem that most of the existing technology needs to be disassembled by special tool to adjust, which cannot be adjusted quickly and is inconvenient during adjustment.

[0006] In order to achieve the above purpose, the utility model adopts the following technical scheme: a packaging bag processing plastic slitting machine, including workbench, the right side surface of workbench is fixedly connected with fixed frame, the outer side wall of fixed frame is fixedly connected with motor, the output shaft of motor is fixedly connected with rotating rod, the surface of rotating rod is slidably connected with multiple groups of slitting knives, the right side surface of workbench is provided with guiding assembly, the top end of fixed frame is provided with variable pitch assembly, the variable pitch assembly includes bidirectional screw rod.

[0007] The surface of the bidirectional threaded rod is threadedly connected with two groups of sliding blocks, the outer wall of the sliding block is hingedly connected with a hinge rod a, the end of the hinge rod a away from the sliding block is hingedly connected with a variable pitch plate, the surface of the variable pitch plate is provided with five groups of guide grooves, the inner wall of the variable pitch plate guide groove is slidably connected with a connecting rod, and the outer wall of the connecting rod is fixedly connected with a swivel ring at the bottom end.

[0008] As a further description of the above technical solution:

[0009] The guide assembly comprises a support frame, the outer wall of the support frame is fixedly connected with a guide rod at the top end, the guide rod is connected with a sliding seat penetrating and slidingly, the outer wall of the sliding seat on both sides is hingedly connected with a hinge rod b, the end of the hinge rod b away from the sliding seat is hingedly connected with a guide plate, and the inner wall of the sliding seat is elastically connected with a wedge through a limiting spring.

[0010] As a further description of the above technical solution:

[0011] The bidirectional threaded rod is rotatably connected to the outer side wall of the fixed frame, the rotating rod is rotatably connected to the bottom end of the inner side wall of the fixed frame, and the swivel ring is rotatably connected to the outer side wall of the slitting knife.

[0012] As a further description of the above technical solution:

[0013] The hinge rod a is slidably connected to the inner wall of the top end of the fixed frame, and the variable pitch plate is penetratingly and slidably connected to the inner wall of the top end of the fixed frame.

[0014] As a further description of the above technical solution:

[0015] The inner wall of the top end of the fixed frame is provided with a guide groove, and the outer wall of the connecting rod is slidably connected to the inner wall of the guide groove of the fixed frame.

[0016] As a further description of the above technical solution:

[0017] The support frame is fixedly connected to the top end of the outer wall of the left side of the workbench, the inner wall of the top end of the support frame is provided with a guide groove, and the outer wall of the top end of the guide plate is slidably connected to the inner wall of the guide groove of the support frame.

[0018] As a further description of the above technical solution:

[0019] One end of the limiting spring is fixedly connected to the inner wall of the sliding seat, and the other end of the limiting spring is fixedly connected to the surface of the wedge.

[0020] As a further description of the above technical solution:

[0021] The wedge is slidably connected to the inner wall of the sliding seat, a plurality of through holes are formed in the surface of the guide rod, and the end of the wedge is inserted into the inner wall of the through hole.

[0022] This utility model has the following beneficial effects:

[0023] 1. In this utility model, the bidirectional threaded rod in the pitch-changing assembly can make the two sets of sliders move closer or further apart when rotating through their oppositely helical threads. This movement is transmitted to the pitch-changing plate through the hinge rod. The uniquely designed guide groove on the pitch-changing plate has a straight groove in the middle and oblique grooves on both sides, which enables the connecting rod to move synchronously or differently when it slides, thereby driving the rotating ring to make the slitting knife slide accurately on the rotating rod. This design allows for precise and flexible adjustment of the slitting knife spacing, and both small-amplitude fine adjustments and large-amplitude pitch changes can be easily achieved.

[0024] 2. In this utility model, when the sliding seat moves up and down, the hinge rods on both sides can drive the guide plates to move towards or away from each other. This design allows the two sets of guide plates to fit tightly according to the packaging bags of different widths, achieving effective compression and guidance of the packaging bags. During the slitting process, no matter how the width of the packaging bag changes, its position can be kept stable, avoiding the problem of offset, greatly reducing the defect rate, improving the uniformity and quality of slitting, and ensuring production efficiency. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the overall three-dimensional structure of a plastic slitting machine for packaging bag processing proposed in this utility model;

[0026] Figure 2 This utility model provides a partial cross-sectional view of the top of the fixed frame of a plastic slitting machine for packaging bag processing and a three-dimensional structural diagram of the variable pitch component.

[0027] Figure 3 This is a partial cross-sectional view of the top of the fixing frame of a plastic slitting machine for packaging bag processing proposed in this utility model;

[0028] Figure 4 This is a partial cross-sectional view of the support frame, sliding seat, and guide rod of a plastic slitting machine for packaging bag processing proposed in this utility model.

[0029] Legend:

[0030] 1. Workbench; 2. Fixing frame; 3. Motor; 4. Rotating rod; 5. Sliding knife; 6. Pitch-changing assembly; 61. Bidirectional threaded rod; 62. Slider; 63. Hinge rod a; 64. Pitch-changing plate; 65. Connecting rod; 66. Rotary ring; 7. Guide assembly; 71. Support frame; 72. Guide rod; 73. Sliding seat; 74. Hinge rod b; 75. Guide plate; 76. Limiting spring; 77. Wedge block. Detailed Implementation

[0031] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0032] Reference Figure 1 - Figure 3 This utility model provides an embodiment of a plastic slitting machine for processing packaging bags, including a workbench 1. A fixed frame 2 is fixedly connected to the right side surface of the workbench 1. A motor 3 is fixedly connected to the outer side wall of the fixed frame 2. A rotating rod 4 is fixedly connected to the output shaft of the motor 3. Multiple slitting blades 5 are slidably connected to the surface of the rotating rod 4. A guide groove is provided on the surface of the rotating rod 4 so that the multiple slitting blades 5 can only slide laterally on the surface of the rotating rod 4. At the same time, when the rotating rod 4 rotates, it will also drive the multiple slitting blades 5 to rotate synchronously. The rotating rod 4 is driven to rotate by the motor 3, so that the multiple slitting blades 5 on the surface of the rotating rod 4 can perform slitting operations on the packaging bags. A guide assembly 7 is provided on the right side surface of the workbench 1, and a pitch-changing assembly 6 is provided at the top of the fixed frame 2.

[0033] Reference Figure 2 and Figure 3 The pitch-changing assembly 6 includes a bidirectional threaded rod 61, which is rotatably connected to the outer sidewall of the fixed frame 2. The bidirectional threaded rod 61 is existing technology, and its surface is provided with two sets of threads, with opposite directions of rotation. Rotation of the bidirectional threaded rod 61 allows the two sets of sliders 62 to move closer together or further apart. A rotating rod 4 is rotatably connected to the bottom end of the inner sidewall of the fixed frame 2. A rotating ring 66 is rotatably connected to the outer sidewall of the slitting knife 5. The outer side of the slitting knife 5 has a groove that fits the rotating ring 66, ensuring that the slitting knife 5 does not drive the rotating ring 66 to rotate synchronously when rotating. Simultaneously, the rotating ring 66... The movement of the slitting blade 5 will cause the slitting blade 5 to move synchronously. Two sets of sliders 62 are threadedly connected to the surface of the bidirectional threaded rod 61. The inner wall of the slider 62 is provided with an internal thread groove, so that when the bidirectional threaded rod 61 rotates, it can push the slider 62 to move threadedly on its surface. The outer wall of the slider 62 is hinged with a hinge rod a63. The end of the hinge rod a63 away from the slider 62 is hinged with a variable pitch plate 64. By rotating the bidirectional threaded rod 61, the two sets of sliders 62 are brought closer to each other on their surface, so that the two sets of hinge rods a63 are pulled and thus push the variable pitch plate 64 to slide on the top of the fixed frame 2.

[0034] Reference Figure 2 and Figure 3The hinge rod a63 is slidably connected to the inner wall of the top of the fixed frame 2. The variable pitch plate 64 passes through and is slidably connected to the inner wall of the top of the fixed frame 2. Five sets of guide grooves are opened on the surface of the variable pitch plate 64. Connecting rods 65 are slidably connected to the inner wall of each guide groove of the variable pitch plate 64. The surface of the variable pitch plate 64 has a middle set of straight grooves and two sets of inclined grooves on both sides. The movement of the variable pitch plate 64 can push the four sets of connecting rods 65 on both sides to move synchronously, thereby adjusting the distance between multiple sets of connecting rods 65. The top of the inner wall of the fixed frame 2 has a guide groove. The outer wall of the connecting rod 65 is slidably connected to the inner wall of the guide groove of the fixed frame 2. When the connecting rod 65 is pushed by the variable pitch plate 64 to move, it will also move laterally in the guide groove of the fixed frame 2, so that multiple sets of connecting rods 65 can move synchronously. A rotating ring 66 is fixedly connected to the bottom of the outer wall of the connecting rod 65.

[0035] Reference Figure 1 and Figure 4 The guide assembly 7 includes a support frame 71, with a guide rod 72 fixedly connected to the top of the outer wall of the support frame 71. The support frame 71 is fixedly connected to the top of the left outer wall of the workbench 1. A guide groove is formed on the inner wall of the top of the support frame 71. The outer wall of the top of the guide plate 75 is slidably connected to the inner wall of the guide groove of the support frame 71. By forming a guide groove on the inner wall of the support frame 71 that matches the guide plate 75, the guide plate 75 can only move laterally on the inner wall of the support frame 71, thereby enabling the two sets of guide plates 75 to move towards each other. The guide rod 72 is designed to compress and guide packaging bags of different widths, preventing misalignment during the slitting process and thus avoiding damage to the packaging bags. A sliding seat 73 is slidably connected to the outer wall of the guide rod 72. A hinge rod b74 is hinged to the outer wall of both sides of the sliding seat 73. A guide plate 75 is hinged to the end of the hinge rod b74 away from the sliding seat 73. By moving the sliding seat 73 up and down on the surface of the guide rod 72, the hinge rods b74 on both sides can pull the corresponding guide plates 75 to move closer together or further apart.

[0036] Reference Figure 4 The inner wall of the sliding seat 73 is elastically connected to a wedge 77 via a limiting spring 76. One end of the limiting spring 76 is fixedly connected to the inner wall of the sliding seat 73, and the other end is fixedly connected to the surface of the wedge 77. The function of the limiting spring 76 is to automatically reset the position of the wedge 77 after it is pulled outward. The wedge 77 is slidably connected to the inner wall of the sliding seat 73. Multiple sets of through holes are opened on the surface of the guide rod 72. The end of the wedge 77 is inserted into the inner wall of the through hole. The insertion between the two allows the sliding seat 73 to be fixed in position after being guided by the corresponding guide plates 75 to move closer together through two sets of hinge rods b74, according to the packaging bags of different widths.

[0037] Working principle: When using this food packaging bag processing slitting machine, adjustments need to be made according to the width of the packaging bag. First, pull the wedge block 77 so that it disengages from the through hole of the guide rod 72 at its current position. The limiting spring 76 is stretched, and then the sliding seat 73 moves up and down on the guide rod 72. When the sliding seat 73 moves, the corresponding guide plates 75 are pulled closer or further apart by the hinge rods b74 on both sides. Since the top of the guide plate 75 slides in the guide groove on the inner wall of the support frame 71, the guide plate 75 can only move laterally. When the guide plates 75 are adjusted to the appropriate position so that the distance between them matches the width of the packaging bag, release the wedge block 77. Under the elastic action of the limiting spring 76, the wedge block 77 is inserted into the corresponding through hole of the guide rod 72, fixing the position of the sliding seat 73 (and the guide plate 75). In this way, during the slitting process, the packaging bag passes between the two sets of guide plates 75. The guide plates 75 press and guide the packaging bag to prevent the packaging bag from shifting during slitting and avoid damage to the packaging bag.

[0038] When it is necessary to change the distance between the slitting blades 5, rotate the bidirectional threaded rod 61. Due to the special thread structure of the bidirectional threaded rod 61, the two sets of sliders 62 move closer or further apart on their surfaces when rotated. Taking the sliders 62 moving closer together as an example, when the sliders 62 move, they push the variable distance plate 64 to slide on the top of the fixed frame 2 through the hinge rod a63. When the variable distance plate 64 slides, the guide groove on its surface acts on the connecting rod 65. Because of the design of the straight groove in the middle and the inclined grooves on both sides, the movement of the variable distance plate 64 will push the four sets of connecting rods 65 on both sides to move synchronously. At the same time, the guide groove on the inner wall of the top of the fixed frame 2 guides the movement of the connecting rod 65, so that it can only move laterally. The movement of the connecting rod 65 drives the rotating ring 66 to move, and the rotating ring 66 drives the slitting blades 5 to slide laterally on the surface of the rotating rod 4, thereby realizing the adjustment of the spacing between the slitting blades 5 to adapt to different slitting width requirements.

[0039] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A plastic slitting machine for processing packaging bags, comprising a worktable (1), characterized in that: A fixed frame (2) is fixedly connected to the right side surface of the workbench (1), a motor (3) is fixedly connected to the outer side wall of the fixed frame (2), a rotating rod (4) is fixedly connected to the output shaft of the motor (3), a multi-section sliding knife (5) is slidably connected to the surface of the rotating rod (4), a guide assembly (7) is provided on the right side surface of the workbench (1), a pitch-changing assembly (6) is provided at the top of the fixed frame (2), and the pitch-changing assembly (6) includes a bidirectional threaded rod (61). The surface of the bidirectional threaded rod (61) is threaded with two sets of sliders (62). The outer wall of the slider (62) is hinged with a hinge rod a (63). The end of the hinge rod a (63) away from the slider (62) is hinged with a variable pitch plate (64). The surface of the variable pitch plate (64) is provided with five sets of guide grooves. The inner wall of the guide groove of the variable pitch plate (64) is slidably connected with a connecting rod (65). The bottom end of the outer wall of the connecting rod (65) is fixedly connected with a swivel ring (66).

2. The plastic slitting machine for packaging bag processing according to claim 1, characterized in that: The guide assembly (7) includes a support frame (71), a guide rod (72) is fixedly connected to the top of the outer wall of the support frame (71), a sliding seat (73) is slidably connected through the outer wall of the guide rod (72), and hinge rods b (74) are hinged to the outer walls on both sides of the sliding seat (73). A guide plate (75) is hinged to the end of the hinge rod b (74) away from the sliding seat (73), and a wedge block (77) is elastically connected to the inner wall of the sliding seat (73) through a limiting spring (76).

3. The plastic slitting machine for packaging bag processing according to claim 1, characterized in that: The bidirectional threaded rod (61) is rotatably connected to the outer side wall of the fixed frame (2), the rotating rod (4) is rotatably connected to the bottom end of the inner side wall of the fixed frame (2), and the rotating ring (66) is rotatably connected to the outer side wall of the slitting knife (5).

4. The plastic slitting machine for packaging bag processing according to claim 1, characterized in that: The hinge rod a (63) is slidably connected to the inner wall of the top of the fixed frame (2), and the variable pitch plate (64) passes through and is slidably connected to the inner wall of the top of the fixed frame (2).

5. A plastic slitting machine for packaging bag processing according to claim 1, characterized in that: The top of the inner wall of the fixed frame (2) is provided with a guide groove, and the outer wall of the connecting rod (65) is slidably connected to the inner wall of the guide groove of the fixed frame (2).

6. A plastic slitting machine for packaging bag processing according to claim 2, characterized in that: The support frame (71) is fixedly connected to the top of the left outer wall of the workbench (1). The inner wall of the top of the support frame (71) is provided with a guide groove. The outer wall of the top of the guide plate (75) is slidably connected to the inner wall of the guide groove of the support frame (71).

7. A plastic slitting machine for packaging bag processing according to claim 2, characterized in that: One end of the limiting spring (76) is fixedly connected to the inner wall of the sliding seat (73), and the other end of the limiting spring (76) is fixedly connected to the surface of the wedge (77).

8. A plastic slitting machine for processing packaging bags according to claim 2, characterized in that: The wedge (77) is slidably connected to the inner wall of the sliding seat (73), and the surface of the guide rod (72) has multiple sets of through holes, with the end of the wedge (77) inserted into the inner wall of the through hole.

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