Adjustable punching mechanism

Abstract

The adjustable punching mechanism comprises a moving frame and a positioning frame, the outer side face of the positioning frame is fixedly connected with a guide plate and a servo electric cylinder, the lower end of the moving frame is slidably connected with the outer side face of the positioning frame through the guide plate, a telescopic rod of the servo electric cylinder is fixedly connected with the moving frame, main sliding grooves are symmetrically formed in the inner side face of the positioning frame, and the main sliding grooves are connected with the positioning frame. A hydraulic cylinder is fixedly connected to the upper surface of the moving frame, a telescopic rod of the hydraulic cylinder is fixedly connected with a moving plate, a moving groove is formed in the surface of the moving plate, an adjusting lead screw is movably connected into the moving groove through a bearing, and a moving block is slidably connected into the moving groove through the adjusting lead screw in threaded connection. Through cooperation of the positioning frame, the movable frame, the longitudinal pressing plate, the transverse pressing plate, the movable plate, the movable block and the limiting plate, the position of the hole cutting pipe can be conveniently adjusted, and therefore the hole opening position of the square-bottom plastic bag can be flexibly adjusted according to actual needs.

Description

Technical Field

[0001] The utility model relates to the technical field of punching mechanisms of bag making machines, in particular to an adjustable punching mechanism. Background Art

[0002] A square bottom plastic bag, as the name implies, is a plastic bag with a square bottom shape when unfolded. The length, width and height can vary. It is often used to store various documents or packaged products. In order to facilitate the closure of the internal space of the square bottom plastic bag, holes are often punched at the opening of the square bottom plastic bag to install buckles. The existing square bottom plastic bag making machines are unable to punch holes in the produced square bottom plastic bags in a timely manner, and they often need to be sent to other workshops or independent punching devices for punching, which is not conducive to improving work efficiency.

[0003] After searching, a punching mechanism of a square bottom plastic bag making machine disclosed in the prior art (application number: CN202020433827.2) records that "a bag placing mechanism is arranged on one side of the bag making machine body, and a square bottom bag is placed inside the bag placing mechanism, a support frame is fixed on both sides of the bag placing mechanism, and a first hydraulic cylinder is fixed to the top center of the support frame, a first push rod is connected to the inside of the first hydraulic cylinder, and a push plate is connected to the bottom of the first push rod, a threaded groove is opened on the surface of the push plate, and a hole cutting tube is connected to the inside of the threaded groove, the outer wall of the hole cutting tube is wrapped with a positioning tube, and the bottom of the positioning tube is welded There is a pressure plate, and the spring is connected to the outer wall of the positioning tube. "; This mechanism is directly arranged on one side of the discharge port of the bag making machine body. When the square bottom bag is discharged from the discharge port of the bag making machine body, the staff can directly take the square bottom bag and place it inside the bag placing mechanism for punching without transferring it, which is conducive to improving work efficiency. However, in the actual use of this mechanism, the position of the hole cannot be conveniently adjusted according to actual needs, making the punching process of the square bottom bag not flexible enough. Therefore, when the opening position of the square bottom bag changes, the workers need to spend more time to adjust it, and even need to replace related parts. Utility Model Content

[0004] In order to overcome the defects of the prior art, an adjustable punching mechanism is now provided to solve the problems raised in the above background technology.

[0005] In order to achieve the above-mentioned purpose, an adjustable punching mechanism is provided, comprising: a moving frame and a positioning frame, the positioning frame is fixedly connected to the surface of the bag making machine body, and the square-bottom plastic bag is placed in the positioning frame, the outer side surfaces of the positioning frame are respectively fixedly connected to the guide plate and the servo electric cylinder, and the lower end of the moving frame is slidably connected to the outer side surface of the positioning frame through the guide plate, the telescopic rod of the servo electric cylinder is fixedly connected to the moving frame, and the inner side surface of the positioning frame is symmetrically provided with a main slide groove, and the main slide block is slidably connected in the main slide groove through a secondary spring, and at the same time, one side of the longitudinal pressure plate is slidably connected to the inner side surface of the positioning frame through the main slide block. On the side, the other side of the longitudinal pressure plate is slidably connected to the transverse pressure plate through an opened positioning groove, the upper surface of the movable frame is fixedly connected to the hydraulic cylinder, the telescopic rod of the hydraulic cylinder is fixedly connected to the movable plate, and a movable groove is opened on the surface of the movable plate, the movable groove is movably connected to the adjusting screw rod through a bearing, and the movable block is slidably connected in the movable groove through a screw-connected adjusting screw rod, and the lower surface of the movable block is fixedly connected to the hole cutting tube, the surface of the hole cutting tube is sleeved with a main spring, the lower end of the main spring is fixedly connected to the limit plate, and the lower end of the hole cutting tube is slidably connected in the guide groove, and the guide groove is opened on the surface of the transverse pressure plate.

[0006] Preferably, the positioning frame is in a U-shaped structure, and the outer side surfaces on both sides of the positioning frame are respectively fixedly connected to two groups of guide plates and a group of servo electric cylinders, and the four groups of guide plates are all in a long strip structure. At the same time, a guide groove is opened corresponding to the position of the lower end of the movable frame relative to the guide plate, and the sizes of the guide plate and the guide groove are matched.

[0007] Preferably, multiple groups of main slide grooves are opened in parallel and at equal intervals on both sides of the inner side surface of the positioning frame. The top of the main slide groove is fixedly connected to the positioning rod, and the positioning rod has a cylindrical structure. The lower end of the positioning rod is connected to the auxiliary spring, and the main slide block is slidably connected to the upper end of the positioning rod through the opened positioning hole.

[0008] Preferably, the longitudinal pressure plate is in the form of an elongated strip, and the longitudinal pressure plate and the main slider are combined to form an E-shaped structure, and the sizes of the main slider and the main slide groove are adapted, the main slider is in the form of an isosceles trapezoidal structure, and the positioning groove provided in the longitudinal pressure plate is in the form of an elongated strip.

[0009] Preferably, the transverse pressure plate is in the form of a long strip, the transverse pressure plate and the guide groove are combined together to form a U-shaped structure, and the two groups of positioning blocks fixedly connected to the end faces of the transverse pressure plate are in the form of a square structure, the sizes of the positioning blocks and the positioning grooves are matched, and the lower surfaces of the longitudinal pressure plate and the transverse pressure plate are in the same plane.

[0010] Preferably, the movable frame is a door-shaped structure, four groups of guide holes are symmetrically provided on the upper surface of the movable frame, and the positions of the movable plate surface relative to the guide holes correspond to the connecting guide rods, and the movable plate is a rectangular structure, and the movable plate and the movable groove are combined together to form a U-shaped structure.

[0011] Preferably, there are two groups of moving blocks, both of which are I-shaped structures, and the sizes of the grooves on both sides of the moving blocks are compatible with the sizes of the moving grooves. The hole-cutting tube fixedly connected to the lower surface of the moving block is a cylindrical structure, and the limit plate slidably connected to the outer side of the hole-cutting tube is a circular ring structure.

[0012] Compared with the prior art, the beneficial effects of the utility model are: through the cooperation of the positioning frame, the moving frame, the servo electric cylinder, the hydraulic cylinder, the moving plate, the adjusting screw and the moving block, the position of the hole-cutting tube can be flexibly adjusted, and then the hole-cutting tube can be used to make holes at different positions on the surface of the square-bottom plastic bag, thereby improving the efficiency and flexibility of making holes on the surface of the square-bottom plastic bag, and then effectively reducing the time required for workers to adjust the hole positions. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a front view schematic diagram of an embodiment of the utility model.

[0014] Figure 2 It is a side view schematic diagram of an embodiment of the utility model.

[0015] Figure 3 It is a top view schematic diagram of an embodiment of the utility model.

[0016] Figure 4 It is a schematic top view of a movable plate according to an embodiment of the utility model.

[0017] In the figure: 1. moving frame; 2. positioning frame; 3. servo electric cylinder; 4. positioning rod; 5. guide plate; 6. main slide; 7. longitudinal pressure plate; 8. transverse pressure plate; 9. moving plate; 10. guide rod; 11. adjusting screw rod; 12. hydraulic cylinder; 13. moving block; 14. hole-cutting tube; 15. limit plate; 16. square-bottom plastic bag. DETAILED DESCRIPTION

[0018] Reference Figures 1 to 4As shown, the utility model provides an adjustable punching mechanism, including: a moving frame 1 and a positioning frame 2, the positioning frame 2 is fixedly connected to the surface of the bag making machine body, and the square bottom plastic bag 16 is placed in the positioning frame 2, the outer side surfaces of the positioning frame 2 are respectively fixedly connected to the guide plate 5 and the servo electric cylinder 3, and the lower end of the moving frame 1 is slidably connected to the outer side surface of the positioning frame 2 through the guide plate 5, the telescopic rod of the servo electric cylinder 3 is fixedly connected to the moving frame 1, and the inner side surface of the positioning frame 2 is symmetrically provided with a main slide groove, and the main slide block 6 is slidably connected in the main slide groove through the auxiliary spring, and at the same time, one side of the longitudinal pressure plate 7 is slidably connected to the inner side surface of the positioning frame 2 through the main slide block 6. The other side of the longitudinal pressure plate 7 is slidably connected to the transverse pressure plate 8 through an opened positioning groove. The upper surface of the movable frame 1 is fixedly connected to the hydraulic cylinder 12, and the telescopic rod of the hydraulic cylinder 12 is fixedly connected to the movable plate 9. A movable groove is opened on the surface of the movable plate 9. The movable groove is movably connected to the adjusting screw 11 through a bearing, and the movable block 13 is slidably connected in the movable groove through the screw-connected adjusting screw 11, and the lower surface of the movable block 13 is fixedly connected to the hole cutting tube 14, and the main spring is sleeved on the surface of the hole cutting tube 14. The lower end of the main spring is fixedly connected to the limit plate 15, and the lower end of the hole cutting tube 14 is slidably connected in the guide groove, which is opened on the surface of the transverse pressure plate 8.

[0019] In this embodiment, the stacked square bottom plastic bags 16 are first placed in the positioning frame 2, and then the switch of the hydraulic cylinder 12 is started. The telescopic rod of the hydraulic cylinder 12 pushes the movable plate 9 to move downward, and then the movable plate 9 can drive the hole cutting tube 14 to move downward synchronously through the moving block 13. At this time, the main spring sleeved on the outer side of the hole cutting tube 14 will push the transverse pressure plate 8 to move downward through the limit plate 15, and the transverse pressure plate 8 will drive the longitudinal pressure plate 7 to move downward synchronously through the positioning block. In the process of the longitudinal pressure plate 7 squeezing the auxiliary spring, the lower surfaces of the transverse pressure plate 8 and the longitudinal pressure plate 7 will abut against the surface of the square bottom plastic bag 16, and the auxiliary fixing effect of the square bottom plastic bag 16 will be activated. After the transverse pressure plate 8 and the longitudinal pressure plate 7 cannot move downward due to the restriction of the square bottom plastic bag 16, the movable plate 9 that continues to move downward will squeeze the main spring, so that The hole-cutting tube 14 can continue to move downward, thereby completing the batch hole-cutting of the square-bottom plastic bag 16. At the same time, when the movable plate 9 is reset by the hydraulic cylinder 12, the longitudinal pressure plate 7, the transverse pressure plate 8 and the hole-cutting tube 14 can be reset synchronously under the action of the squeezed main spring and the auxiliary spring. When it is necessary to adjust the position of the hole opening on the surface of the square-bottom plastic bag 16, first start the switch of the servo electric cylinder 3. The telescopic rod of the servo electric cylinder 3 can accurately drive the moving frame 1 to move along the length direction of the longitudinal pressure plate 7, and then rotate the adjusting screw rod 11. The adjusting screw rod 11 drives the two groups of hole-cutting tubes 14 to move relative to each other through the screw-connected moving block 13, and then conveniently adjusts the spacing between the two groups of hole-cutting tubes 14, thereby realizing the flexible adjustment of the hole opening position on the surface of the square-bottom plastic bag 16 and improving the efficiency of the hole opening position adjustment.

[0020] As a preferred embodiment, the positioning frame 2 is in the shape of a U-shaped structure, and the outer side surfaces on both sides of the positioning frame 2 are respectively fixedly connected to two groups of guide plates 5 and a group of servo electric cylinders 3, and the four groups of guide plates 5 are all in the shape of long strips. At the same time, a guide groove is provided at the lower end of the moving frame 1 corresponding to the position of the guide plate 5, and the sizes of the guide plate 5 and the guide groove are matched.

[0021] In this embodiment, if Figure 1 and Figure 3 The sizes of the guide plate 5 and the guide groove are matched, which can effectively limit the moving range of the moving frame 1 and prevent the moving frame 1 from accidentally leaving the surface of the positioning frame 2. At the same time, the inner side of the moving frame 1 fits the outer side of the positioning frame 2, thereby helping to enhance the stability of the moving frame 1 when moving.

[0022] As a preferred embodiment, multiple sets of main slide grooves are opened in parallel and at equal intervals on both sides of the inner side surface of the positioning frame 2. The top of the main slide groove is fixedly connected to the positioning rod 4, and the positioning rod 4 is a cylindrical structure. The lower end of the positioning rod 4 is connected to the auxiliary spring. At the same time, the main slider 6 is slidably connected to the upper end of the positioning rod 4 through the opened positioning hole.

[0023] In this embodiment, if Figure 1 and Figure 3 The auxiliary spring sleeved at the lower end of the positioning rod 4 enables the longitudinal pressure plate 7 and the main slider 6 to have the function of automatic reset. Moreover, the setting of the positioning rod 4 can not only enhance the stability of the main slider 6 during movement, but also assist the auxiliary spring in axial compression. At the same time, the stiffness of the auxiliary spring is smaller than that of the main spring, so the auxiliary spring is deformed before the main spring. Therefore, the hole-cutting tube 14 can perform the hole-cutting process only after the longitudinal pressure plate 7 and the transverse pressure plate 8 fix the square-bottom plastic bag 16.

[0024] As a preferred embodiment, the longitudinal pressure plate 7 is in the form of an elongated strip, and the longitudinal pressure plate 7 and the main slider 6 are combined together to form an E-shaped structure. The sizes of the main slider 6 and the main slide groove are matched, the main slider 6 is in the form of an isosceles trapezoidal structure, and the positioning groove provided on the longitudinal pressure plate 7 is in the form of an elongated strip.

[0025] In this embodiment, if Figure 1 , Figure 2 and Figure 3 The sizes of the main slider 6 and the main slide groove are matched, which can help enhance the stability of the longitudinal pressure plate 7 when it moves. Moreover, the opening of the positioning groove enables the transverse pressure plate 8 to move along the length direction of the longitudinal pressure plate 7, thereby helping to improve the convenience of position adjustment of the hole-cutting tube 14.

[0026] As a preferred embodiment, the transverse pressure plate 8 is in the form of a long strip. The transverse pressure plate 8 and the guide groove are combined together to form a U-shaped structure. The two sets of positioning blocks fixedly connected at both end faces of the transverse pressure plate 8 are in a square structure. The sizes of the positioning blocks and the positioning grooves are matched. At the same time, the lower surfaces of the longitudinal pressure plate 7 and the transverse pressure plate 8 are in the same plane.

[0027] In this embodiment, if Figure 1 , Figure 2 and Figure 3 The sizes of the positioning block and the positioning groove are matched, which can help enhance the stability of the transverse pressure plate 8 when it moves on the surface of the longitudinal pressure plate 7. At the same time, the opening of the guide groove can help guide the movement of the lower end of the cutter tube 14, thereby ensuring that the cutter tube 14 can always be in a vertical state.

[0028] As a preferred embodiment, the moving frame 1 is a door-shaped structure, and four groups of guide holes are symmetrically provided on the upper surface of the moving frame 1. The position of the surface of the moving plate 9 relative to the guide holes corresponds to the connecting guide rod 10, and the moving plate 9 is a rectangular structure. The moving plate 9 and the moving groove are combined together to form a U-shaped structure.

[0029] In this embodiment, if Figure 1 and Figure 4 The sizes of the guide hole and the guide rod 10 are adapted to each other, which can help enhance the stability of the guide rod 10 when the movable plate 9 moves, thereby helping enhance the stability of the movable plate 9 when it moves. At the same time, scale lines are provided on the surface of the movable plate 9, so that workers can intuitively understand the relative distance between the two sets of hole-cutting tubes 14.

[0030] As a preferred embodiment, there are two groups of moving blocks 13, both of which are I-shaped structures, and the sizes of the grooves on both sides of the moving blocks 13 are adapted to the sizes of the moving grooves. The hole-cutting tube 14 fixedly connected to the lower surface of the moving block 13 is in a cylindrical structure, and the limiting plate 15 slidably connected to the outer side of the hole-cutting tube 14 is in a circular ring structure.

[0031] In this embodiment, if Figure 1 , Figure 2 and Figure 4 The sizes of the moving block 13 and the moving groove are matched, which can help enhance the stability of the moving block 13 and the hole-cutting tube 14 when they move, and can also effectively reduce the probability of deformation and damage of the adjusting screw 11. At the same time, the main spring and the limit plate 15 are set so that during the downward movement of the hole-cutting tube 14, the limit plate 15 can push the horizontal pressure plate 8 to move downward synchronously, ensuring that the hole-cutting tube 14 can be opened only after the square-bottom plastic bag 16 is fixed, thereby improving the quality of the opening.

[0032] The adjustable punching mechanism of the utility model enables the position of the cutting tube 14 to be conveniently adjusted through the cooperation of the positioning frame 2, the moving frame 1, the longitudinal pressure plate 7, the transverse pressure plate 8, the moving plate 9, the moving block 13 and the limiting plate 15, so that the opening position of the square bottom plastic bag 16 can be flexibly adjusted according to actual needs, effectively reducing the time for workers to adjust the opening position of the surface of the square bottom plastic bag 16.

Claims

1. An adjustable punching mechanism, comprising: Move the moving frame (1) and the positioning frame (2). The positioning frame (2) is fixedly connected to the surface of the bag-making machine body, and the square-bottom plastic bag (16) is placed inside the positioning frame (2). It is characterized in that: guide plates (5) and servo cylinders (3) are fixedly connected to the outer side surface of the positioning frame (2) respectively. The lower end of the moving frame (1) is slidably connected to the outer side surface of the positioning frame (2) through the guide plates (5). The telescopic rod of the servo cylinder (3) is fixedly connected to the moving frame (1). Main chutes are symmetrically formed on the inner side surface of the positioning frame (2). The main slider (6) is slidably connected to the main chute through a secondary spring. At the same time, one side of the longitudinal pressing plate (7) is slidably connected to the inner side surface of the positioning frame (2) through the main slider (6), and the other side of the longitudinal pressing plate (7) is slidably connected to the transverse pressing plate (8) through a positioning groove formed. A hydraulic cylinder (12) is fixedly connected to the upper surface of the moving frame (1). The telescopic rod of the hydraulic cylinder (12) is fixedly connected to the moving plate (9). A moving groove is formed on the surface of the moving plate (9). An adjusting screw rod (11) is movably connected to the moving groove through a bearing. The moving block (13) is slidably connected to the moving groove through the adjusting screw rod (11) connected by screwing. The lower surface of the moving block (13) is fixedly connected to a hole-cutting pipe (14). A main spring is sleeved on the surface of the hole-cutting pipe (14). The lower end of the main spring is fixedly connected to a limiting plate (15). At the same time, the lower end of the hole-cutting pipe (14) is slidably connected to a guiding groove formed on the surface of the transverse pressing plate (8).

2. An adjustable punching mechanism according to claim 1, characterized in that: The positioning frame (2) has a U-shaped structure. Two groups of guide plates (5) and one group of servo cylinders (3) are fixedly connected to the outer side surfaces on both sides of the positioning frame (2) respectively. All four groups of guide plates (5) have a long strip structure. At the same time, guiding grooves are correspondingly formed at the positions of the lower end of the moving frame (1) relative to the guide plates (5). The sizes of the guide plates (5) and the guiding grooves are adapted to each other.

3. The adjustable punching mechanism according to claim 1, characterized in that: Multiple groups of main chutes are formed on both sides of the inner side surface of the positioning frame (2) in parallel and at equal intervals. A positioning rod (4) is fixedly connected to the top of the main chute. The positioning rod (4) has a cylindrical structure. The lower end of the positioning rod (4) is sleeved with a secondary spring. At the same time, the main slider (6) is slidably connected to the upper end of the positioning rod (4) through a positioning hole formed.

4. The adjustable punching mechanism according to claim 1, characterized in that: The longitudinal pressing plate (7) has a long strip structure. The longitudinal pressing plate (7) and the main slider (6) together form an E-shaped structure. The sizes of the main slider (6) and the main chute are adapted to each other. The main slider (6) has an isosceles trapezoid structure. At the same time, the positioning groove formed on the longitudinal pressing plate (7) has a long strip structure.

5. The adjustable punching mechanism according to claim 1, characterized in that: The transverse pressing plate (8) has a long strip structure. The transverse pressing plate (8) and the guiding groove together form a square frame structure. The two positioning blocks fixedly connected to both end faces of the transverse pressing plate (8) are both square structures. The sizes of the positioning blocks and the positioning grooves are adapted to each other. At the same time, the lower surfaces of the longitudinal pressing plate (7) and the transverse pressing plate (8) are in the same plane.

6. The adjustable punching mechanism according to claim 1, characterized in that: The moving frame (1) has a gate-shaped structure. Four groups of guiding holes are symmetrically formed on the upper surface of the moving frame (1). Guide rods (10) are correspondingly connected to the positions of the surface of the moving plate (9) relative to the guiding holes. The moving plate (9) has a rectangular structure. The moving plate (9) and the moving groove together form a square frame structure.

7. The adjustable punching mechanism according to claim 1, characterized in that: There are two groups of moving blocks (13), both of which are in an I-shaped structure, and the size of the grooves on both sides of the moving blocks (13) is compatible with the size of the moving grooves, and the hole-cutting tube (14) fixedly connected to the lower surface of the moving block (13) is in a cylindrical structure, and the limit plate (15) slidably connected to the outer side of the hole-cutting tube (14) is in a circular ring structure.

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