Automatically adjusting punching knife mechanism

Abstract

The present invention discloses an automatically adjustable punching and cutting knife mechanism, comprising a punching and cutting assembly and a power assembly, wherein the power assembly is used to drive the punching and cutting assembly to complete the punching and cutting work, and further comprises an adjustment assembly, wherein the adjustment assembly comprises a first screw and a second screw arranged in parallel, a transmission member for linking the first screw and the second screw, and a motor for driving the first screw to rotate, the power assembly is screwed together with the first screw, and the punching and cutting assembly is screwed together with the second screw, and when the motor drives the first screw to rotate forward or reverse, the punching and cutting assembly and the power assembly are simultaneously raised or lowered.

Description

Technical Field

[0001] The invention relates to the technical field of multi-row packaging machinery, in particular to an automatic adjustment punching and cutting knife mechanism. Background Art

[0002] Multi-row packaging machines are commonly used for packaging powders, granular materials, sauces or liquid materials. Their working process is usually film unwinding, slitting into multiple strips, longitudinally sealing into multiple rows of tubular bags, adding materials, transversely sealing, and finally punching and cutting the conjoined bags into independent product packaging. Multi-row tubular bag forming and packaging can be completed at one time. When punching, a punching mechanism that can complete the corresponding number of rows of conjoined tubular bags at one time is required. According to the different loading amounts when adding materials, the length of the finished product when cutting is also different. Therefore, the upper and lower positions of the punching knife mechanism need to be adjusted to adapt. At the same time, since multiple rows of punching are carried out simultaneously, the punching knife mechanism has a large width span and a large punching load, and its power component is also heavy. The existing punching knife mechanism mostly adopts manual adjustment. Each time the loading amount is changed, it needs to be manually adjusted and tested multiple times to get it in place; it is time-consuming and labor-intensive, and it is also easy to cause waste of packaging materials and materials. Summary of the Invention

[0003] The purpose of the present invention is to provide an automatically adjustable punching and cutting knife mechanism, in which the power component and the punching and cutting component are designed to be separated, and the upper and lower positions are adjusted synchronously by two sets of linked screws, thereby reducing the load on a single screw. At the same time, a motor is used as a driving source, and the adjustment parameters can be conveniently set by the electronic control system of a conventional multi-row packaging machine, thereby realizing automatic adjustment of the upper and lower positions of the power component and the punching and cutting component, improving the level of automation, and solving the problems in the prior art.

[0004] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: an automatically adjustable punching knife mechanism, comprising a punching assembly 1 and a power assembly 2, wherein the power assembly 2 is used to drive the punching assembly 1 to complete the punching work, and further comprising an adjustment assembly 3, wherein the adjustment assembly 3 comprises a first screw 305 and a second screw 310 arranged in parallel, a transmission member for linking the first screw 305 and the second screw 310, and a motor 303 for driving the first screw 305 to rotate, the power assembly 2 is screwed together with the first screw 305, and the punching assembly 1 is screwed together with the second screw 310, and when the motor 303 drives the first screw 305 to rotate forward or reverse, the punching assembly 1 and the power assembly 2 are simultaneously raised or lowered.

[0005] Furthermore, the punching assembly 1 includes a fixed plate 104 and a movable plate 101 arranged in pair, the two ends of the fixed plate 104 are respectively connected to the linear bearing seat 105, the linear bearing seat 105 is connected to the lifting seat 106, and the lifting seat 106 is slidably mounted on the linear rail 4; the two ends of the movable plate 101 are respectively connected to the sliding shaft 102, and the sliding shaft 102 slides through the linear bearing seat 105 and is connected to the pull rod 201 of the power assembly 2 at one end; the second screw 310 is spirally matched with the lifting seat 106.

[0006] Furthermore, the power assembly 2 also includes a gearbox 204 and a servo motor 205. The gearbox 204 can be moved up and down. The servo motor 205 is connected to the input end of the gearbox 204. Both ends of the output shaft 206 of the gearbox 204 are equipped with eccentric disks 202, and the other end of the pull rod 201 is connected to the eccentric disk 202.

[0007] Furthermore, the adjustment component 3 also includes a lower support plate 312 and an upper support plate 314 set at a fixed interval, the lower support plate 312 and the upper support plate 314 are connected by a guide column 313, the motor 303 is installed on the upper end surface of the upper support plate 314, the gear box 204 is installed between the lower support plate 312 and the upper support plate 314 and is slidingly supported by the guide column 313, the first screw 305 is screwed with the first nut 306 installed on the gear box 204, the upper end of the first screw 305 is equipped with a synchronous wheel 302 and is linked to the output end of the reducer 304 through a synchronous belt 301, and the input end of the reducer 304 is connected to the output end of the motor 303.

[0008] Furthermore, the transmission member includes a driving sprocket 307 installed at the lower end of the first screw 305 , a driven sprocket 309 installed at the lower end of the second screw 310 , and a chain 308 wound around the driving sprocket 307 and the driven sprocket 309 .

[0009] Furthermore, a first linear bearing 103 is installed between the sliding shaft 102 and the linear bearing seat 105 , and a second linear bearing 207 is installed between the guide column 313 and the gear box 204 .

[0010] Furthermore, both ends of the pull rod 201 are connected to the sliding shaft 102 and the eccentric disk 202 respectively through joint bearings 203 .

[0011] The beneficial effects of the present invention are as follows: an automatically adjusting punching knife mechanism has a split design for the power component and the punching component, and the upper and lower positions are synchronously adjusted by two sets of linked screws, thereby reducing the load on a single screw. At the same time, a motor is used as a driving source, and the adjustment parameters can be conveniently set by the electronic control system of a conventional multi-row packaging machine, thereby realizing automatic adjustment of the upper and lower positions of the power component and the punching component and improving the level of automation. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 A perspective view of the present invention;

[0013] Figure 2 It is the front view of the present invention;

[0014] Figure 3 It is a side view of the present invention. DETAILED DESCRIPTION

[0015] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0016] See also Figure 1-3 The cam 310 is actuated by the actuator 211 to move the actuator 221 forwards or backwards to move the actuator 230, so that the actuator 221 is in a state of rotation and the actuator 232 is in a state of rotation.

[0017] Specifically, the punching assembly 1 includes a fixed plate 104 and a movable plate 101 that are arranged in pairs. The fixed plate 104 and the movable plate 101 are used to install the punching fixed knife and the punching movable knife respectively. When the movable plate 101 is away from the fixed plate 104, the punching movable knife and the punching fixed knife are also away from each other. At this time, the conjoined tube bag filled with materials in the multi-row packaging machine passes through a bag length between the punching movable knife and the punching fixed knife. When the movable plate 101 drives the punching movable knife to move closer to the punching fixed knife, the punching of the tube bag body is completed. The two ends of the fixed plate 104 are respectively connected to the linear bearing seat 105, and the linear bearing seat 105 is connected to the lifting seat 106. The lifting seat 106 slides and is installed It is arranged on the linear rail 4; both ends of the movable plate 101 are connected to the sliding shaft 102 respectively, and one end of the sliding shaft 102 after sliding through the linear bearing seat 105 is connected to the pull rod 201 of the power assembly 2; the second screw 310 is screwed with the lifting seat 106, and a nut is usually fixedly installed in the lifting seat 106, and the second screw 310 is screwed into the nut. Here, the linear rail 4 is fixedly installed on the inner side of the front vertical plate 6 of the multi-row packaging machine by fasteners. When the second screw 310 rotates, the lifting seat 106 is guided by the linear rail 4 to move up and down, thereby driving the fixed plate 104 and the movable plate 101 to move up and down, see Figure 1 In this embodiment, two second screws 310 are provided, which respectively drive the lifting seats 106 at both ends of the fixed plate 104 to move up and down, which is conducive to the smooth up and down movement of the punching assembly 1 as a whole. Here, the upper and lower ends of the second screw 310 are rotatably supported by the bearing seat 311 connected to the front vertical plate 6.

[0018] As a preferred embodiment, the power component 2 also includes a gear box 204 and a servo motor 205. The gear box 204 can be moved up and down. The servo motor 205 is connected to the input end of the gear box 204. The output shaft 206 of the gear box 204 is equipped with eccentric disks 202 at both ends. The other end of the pull rod 201 is connected to the eccentric disk 202. When working, the two pull rods 201 simultaneously push and pull the movable plate 101 through the sliding shaft 102 to ensure that the movable plate 101 can apply force evenly across the entire punching width, ensure stability during punching, and avoid damage to the punching fixed knife or punching movable knife due to off-load. Using the servo motor 205 as the driving source is conducive to integrated control with the electronic control system of the multi-row packaging machine and improves the automation level of the equipment.

[0019] As a preferred embodiment, the adjustment assembly 3 also includes a lower support plate 312 and an upper support plate 314 set at a fixed distance. The lower support plate 312 and the upper support plate 314 are connected by a guide column 313, wherein the lower end of the lower support plate 312 is fixedly connected to the bottom plate 5 of the multi-row packaging machine, thereby ensuring stability during adjustment; the motor 303 is mounted on the upper end surface of the upper support plate 314, the gear box 204 is mounted between the lower support plate 312 and the upper support plate 314 and is slidingly supported by the guide column 313, the first screw 305 is screwed with the first nut 306 mounted on the gear box 204, the upper end of the first screw 305 is equipped with a synchronous wheel 302 and is linked to the output end of the reducer 304 through a synchronous belt 301, and the input end of the reducer 304 is connected to the output end of the motor 303, see Figure 2 In this embodiment, there are two first screws 305, which are arranged in parallel with a spacing and are linked by a synchronous belt 301. In addition, the upper and lower ends of the two first screws 305 are rotatably supported by an upper support plate 314 and a lower support plate 312 respectively, and bearings are installed at the rotation support to ensure smooth rotation of the first screw 305. In this way, the power component 2 as a whole moves up and down more smoothly and stably, thereby improving the service life of the first screw 305 and the first nut 306. Each first screw 305 is linked to the second screw 310 on the corresponding side through a transmission member.

[0020] As a preferred embodiment, the transmission member includes a driving sprocket 307 installed at the lower end of the first screw 305, a passive sprocket 309 installed at the lower end of the second screw 310, and a chain 308 wound around the driving sprocket 307 and the passive sprocket 309. Here, the driving sprocket 307 and the passive sprocket 309 can also use synchronous pulleys, and the corresponding chains can also be replaced with synchronous belts.

[0021] As a preferred embodiment, a first linear bearing 103 is installed between the sliding shaft 102 and the linear bearing seat 105, so that the movable plate 101 moves smoothly and the smoothness during punching is improved; a second linear bearing 207 is installed between the guide column 313 and the gear box 204, which also makes the gear box 204 move smoothly when moving up and down.

[0022] As a preferred embodiment, both ends of the pull rod 201 are connected to the sliding shaft 102 and the eccentric disk 202 respectively through joint bearings 203. In this way, the processing errors between the various components can be effectively offset, and the eccentric disk 202, pull rod 201 and sliding shaft 102 can be prevented from interfering and jamming during movement.

[0023] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0024] In the description of the present invention, it should be understood that the terms "up", "down", "left", "right", "top", "bottom", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0025] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. An automatic adjustment punching knife mechanism, comprising a punching assembly (1) and a power assembly (2), wherein the power assembly (2) is used to drive the punching assembly (1) to perform a punching operation, and is characterized in that: The machine further comprises an adjusting assembly (3), the adjusting assembly (3) comprising a first screw (305), a second screw (310) arranged in parallel, a transmission member for linking the first screw (305) and the second screw (310), and a motor (303) for driving the first screw (305) to rotate; the power assembly (2) is screwed together with the first screw (305) and the punching assembly (1) is screwed together with the second screw (310); when the motor (303) drives the first screw (305) to rotate in a forward or reverse direction, the punching assembly (1) and the power assembly (2) are simultaneously raised or lowered; The punching assembly (1) comprises a fixed plate (104) and a movable plate (101) arranged in pairs, wherein both ends of the movable plate (101) are respectively connected to a sliding shaft (102), and one end of the sliding shaft (102) is connected to a pull rod (201) of the power assembly (2) after sliding through a linear bearing seat (105); The power assembly (2) includes a gear box (204), the gear box (204) is movable up and down, and eccentric disks (202) are installed at both ends of the output shaft (206) of the gear box (204), and the other end of the pull rod (201) is connected to the eccentric disk (202); The transmission member comprises a driving sprocket (307) mounted on the lower end of the first screw (305), a driven sprocket (309) mounted on the lower end of the second screw (310), and a chain (308) wound around the driving sprocket (307) and the driven sprocket (309).

2. The automatic adjustment punching and cutting mechanism according to claim 1, characterized in that: The two ends of the fixed plate (104) are respectively connected to the linear bearing seat (105), the linear bearing seat (105) is connected to the lifting seat (106), and the lifting seat (106) is slidably mounted on the linear rail (4); the second screw (310) is spirally matched with the lifting seat (106).

3. The automatic adjustment punching and cutting mechanism according to claim 2, characterized in that: The power assembly (2) further includes a servo motor (205), and the servo motor (205) is connected to the input end of the gear box (204).

4. The automatic adjustment punching and cutting mechanism according to claim 3, characterized in that: The adjustment assembly (3) further comprises a lower support plate (312) and an upper support plate (314) arranged at a fixed interval, the lower support plate (312) and the upper support plate (314) being connected by a guide column (313), the motor (303) being mounted on the upper end surface of the upper support plate (314), the gear box (204) being mounted between the lower support plate (312) and the upper support plate (314) and being slidably supported by the guide column (313), the first screw (305) being screwed with a first nut (306) mounted on the gear box (204), the upper end of the first screw (305) being mounted with a synchronous wheel (302) and being linked to the output end of the reducer (304) via a synchronous belt (301), and the input end of the reducer (304) being connected to the output end of the motor (303).

5. The automatic adjustment punching and cutting mechanism according to claim 4, characterized in that: A first linear bearing (103) is installed between the sliding shaft (102) and the linear bearing seat (105), and a second linear bearing (207) is installed between the guide column (313) and the gear box (204).

6. The automatic adjustment punching and cutting mechanism according to claim 3, characterized in that: Both ends of the pull rod (201) are connected to the sliding shaft (102) and the eccentric disk (202) respectively through joint bearings (203).

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