Cutter high-precision control device and bag making machine

Abstract

The high-precision cutter control device at least comprises a longitudinal cutter control device which is at least provided with a cutter driving mechanism, a connecting rod mechanism and an eccentric mechanism, the output end of the driving mechanism is connected with the eccentric mechanism and connected with the connecting rod mechanism through the eccentric mechanism, and the other end of the connecting rod mechanism is connected with a cutter mechanism. The cutter is controlled to move in the longitudinal direction; the transverse cutter control device is at least provided with a cutter moving driving mechanism, a synchronous belt mechanism and a displacement control assembly, the output end of the cutter moving driving mechanism is connected with the synchronous belt mechanism, the synchronous belt mechanism is connected with the displacement control assembly, one end of the displacement control assembly is connected to the cutter mechanism, and the cutter mechanism is controlled to integrally move in the transverse direction. According to the scheme, all-directional control over cutting of the cutter is effectively achieved through the transverse control mechanism and the longitudinal control mechanism, accurate judgment of the cutting position and cutting can be effectively achieved through photoelectric cooperation of the servo speed reducing mechanism and the displacement control mechanism, the cutting precision is improved, resource waste is reduced, and the bag forming rate is increased.

Description

Technical Field

[0001] The utility model relates to the technical field of packaging equipment, in particular to a high-precision control device for a cutting knife and a bag making machine. Background Technique

[0002] A packaging bag refers to a bag used for packaging various articles, which facilitates the transportation of goods during the production and circulation process and is easy to store. It is widely used in daily life and industrial production. At present, during the processing of packaging bags, especially after forming and heat sealing, it is necessary to perform a process of cutting and forming the heat-sealed packaging bag film material. When only considering the cutting and forming process, a cutting knife is required. Since the cutting and forming process is the last process in the preparation process of packaging bags, the packaging bag film material will be deformed during processes such as traction and heat sealing before cutting. As a result, the cutting position of the final packaging bag is inaccurate, ultimately causing problems such as waste of resources and poor yield of packaging bags. Therefore, it is necessary to precisely control the position of the cutting knife. Content of the Utility Model

[0003] The purpose of the utility model is to provide a high-precision control device for a cutting knife and a bag making machine to solve the problem of inaccurate cutting position of the cutting knife in the background technique.

[0004] To achieve this purpose, the utility model adopts the following technical solutions:

[0005] Provide a high-precision control device for a cutting knife, including at least:

[0006] A longitudinal cutting knife control device, which at least has a cutting knife driving mechanism, a connecting rod mechanism, and an eccentric mechanism. The output end of the driving mechanism is connected to the eccentric mechanism, and the eccentric mechanism is connected to the connecting rod mechanism. The other end of the connecting rod mechanism is connected to the cutting knife mechanism to control the longitudinal movement of the cutting knife mechanism.

[0007] A transverse cutting knife control device, which at least has a knife moving driving mechanism, a synchronous belt mechanism, and a displacement control component. The output end of the knife moving driving mechanism is connected to the synchronous belt mechanism, the synchronous belt mechanism is connected to the displacement control component, and one end of the displacement control component is connected to the cutting knife mechanism to control the overall transverse movement of the cutting knife mechanism.

[0008] Preferably, the cutting knife mechanism at least has an upper cutting knife and a lower cutting knife. The two ends of the upper cutting knife and the lower cutting knife are connected by a cutting knife connecting plate, so that the upper cutting knife and the lower cutting knife form an integral cutting knife group and can generate a displacement as a whole in the transverse direction of the bag making machine. Among them, the cutting knife connecting plate has a cutting knife moving part, and the two ends of the upper cutting knife are arranged through the cutting knife moving part and can generate a displacement in the up and down direction along the cutting knife moving part.

[0009] Preferably, a cutter holder is provided on the upper cutter. Both ends of the cutter holder pass through the cutter moving part and are connected to the connecting rod mechanism. The connecting rod mechanism drives the upper cutter to move up and down along the cutter moving part to perform the cutting operation.

[0010] Preferably, a cutter base is provided at the bottom of the lower cutter. A moving track is provided on the cutter base. The cutter mechanism realizes the lateral position along the bag-making machine through the cutter base and the moving track.

[0011] Preferably, the displacement control component at least has a bevel gear component and a ball screw component connected to the output end of the bevel gear component. The bevel gear component is connected to the synchronous belt mechanism. The synchronous belt mechanism drives the bevel gear component to rotate. The output end of the ball screw component is connected to the cutter base, driving the cutter base to generate displacement along the moving track.

[0012] Preferably, the displacement control component also at least has a grating ruler. The grating ruler is connected to the control system of the bag-making machine, detects the position information of the cutter base and feeds it back to the control system, and improves the control accuracy through absolute value control.

[0013] Preferably, the synchronous belt mechanism at least has a synchronous belt pulley and a synchronous belt. The synchronous belt is arranged around the outside of the output end of the knife moving drive mechanism, the outside of the synchronous belt pulley, and the outside of the bevel gear component to realize the synchronous rotation of the knife moving drive mechanism, the synchronous belt pulley, and the bevel gear component.

[0014] Preferably, both the cutter drive mechanism and the knife moving drive mechanism are set as servo reduction mechanisms.

[0015] The present utility model also provides a bag-making machine, which at least has a frame. The high-precision cutter control device is installed on the frame to complete the cutting operation.

[0016] Preferably, an optoelectronic sensing device is also provided on the bag-making machine. The optoelectronic sensing device is arranged on the frame and is signal-connected to the cutter drive device and the knife moving drive device of the high-precision cutter control device to control the position of the cutter mechanism on the frame and complete the cutting operation. Beneficial effects

[0017] The high-precision cutter control device and the bag-making machine provided by the present utility model effectively realize the all-round control of the cutter cutting through the horizontal and vertical control mechanisms. Through the cooperation of optoelectronics, the servo reduction mechanism and the displacement control mechanism, the accurate judgment and cutting of the cutting position can be effectively realized, the cutting accuracy can be improved, resource waste can be reduced, and the bag forming rate can be improved. Description of the drawings

[0018] Figure 1 It is a schematic structural diagram of the high-precision cutter control device provided by the present utility model installed on the frame;

[0019] Figure 2 is Figure 1 A schematic structural diagram in another direction;

[0020] Figure 3 It is a schematic structural diagram of the cutter connecting plate cooperating with the cutter shaft and the connecting rod mechanism in this embodiment;

[0021] In the figure:

[0022] Frame;

[0023] Cutter control device, 20 - upper cutter, 200 - cutter holder, 21 - lower cutter, 210 - cutter seat, 22 - cutter connecting plate, 220 - cutter moving part, 23 - connecting rod mechanism, 24 - cutter driving mechanism, 25 - eccentric mechanism, 250 - connecting rod, 251 - eccentric wheel, 252 - belt pulley, 260 - bevel gear assembly, 2600 - first bevel gear, 2601 - second bevel gear, 261 - ball screw assembly, 262 - grating scale, 27 - tool moving driving device, 280 - synchronous belt pulley, 281 - synchronous belt. Specific embodiments

[0024] The present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It can be understood that the specific embodiments described herein are only used to explain the present utility model, rather than limiting the present utility model. Additionally, it should be noted that for the sake of description, only parts related to the present utility model rather than all structures are shown in the drawings.

[0025] In the description of the present utility model, unless otherwise clearly defined and limited, the terms "connected", "connected to", and "fixed" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal connection of two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0026] In the present utility model, unless otherwise clearly specified and defined, the first feature being "above" or "below" the second feature may include direct contact between the first and second features, or may include the situation where the first and second features are not in direct contact but in contact through additional features therebetween. Moreover, the first feature being "above", "over" and "on the top of" the second feature includes the first feature being directly above and obliquely above the second feature, or merely indicating that the horizontal height of the first feature is higher than that of the second feature. The first feature being "below", "under" and "beneath" the second feature includes the first feature being directly below and obliquely below the second feature, or merely indicating that the horizontal height of the first feature is lower than that of the second feature.

[0027] In the description of this embodiment, the terms such as "above", "below", "right", etc., regarding the orientation or positional relationship are based on the orientation or positional relationship shown in the drawings. It is only for the convenience of description and simplifying the operation, 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 utility model.

[0028] Combined with Figure 1-2 As shown, this embodiment provides a high-precision cutter control device. This cutter control device 2 is installed on the frame 1 of the bag-making machine. The bag-making machine has the structure of an existing bag-making machine, and the frame 1 is a support frame. The high-precision cutter control device of this solution at least includes:

[0029] A longitudinal cutter control device, which at least has a cutter driving mechanism, a connecting rod mechanism and an eccentric mechanism. The output end of the driving mechanism is connected to the eccentric mechanism and is connected to the connecting rod mechanism through the eccentric mechanism. The other end of the connecting rod mechanism is connected to the cutter mechanism to control the longitudinal movement of the cutter mechanism.

[0030] A transverse cutter control device, which at least has a cutter moving driving mechanism, a synchronous belt mechanism and a displacement control component. The output end of the cutter moving driving mechanism is connected to the synchronous belt mechanism. The synchronous belt mechanism is connected to the displacement control component. One end of the displacement control component is connected to the cutter mechanism to control the overall transverse movement of the cutter mechanism.

[0031] The more specific description is as follows:

[0032] The cutter mechanism adopted in this embodiment at least has an upper cutter 20 and a lower cutter 21. The two ends of the upper cutter 20 and the lower cutter 21 are connected by a cutter connecting plate 22, so that the upper cutter 20 and the lower cutter 21 form an integral cutter group and can generate a displacement as a whole along the transverse direction of the bag-making machine. Among them, the cutter connecting plate 22 has a cutter moving part 220. The two ends of the upper cutter 20 are arranged through the cutter moving part 220 and can generate a displacement in the up and down direction along the cutter moving part 220.

[0033] For the longitudinal cutter control device, the cutter driving mechanism 24 adopts a servo reduction mechanism. The output end of the servo reduction mechanism 24 is connected to the eccentric mechanism 25 through a transmission belt. The eccentric mechanism 25 has a connecting rod 250 and an eccentric wheel 251. The connecting rod 250 is installed on the frame 1. The eccentric wheel 251 is arranged at both ends of the connecting rod 250 and is located outside the frame 1. A belt pulley 252 is arranged on the connecting rod 250 inside the frame 1. The output end transmission belt of the servo reduction mechanism 24 is connected to the belt pulley 252, thereby driving the rotation of the eccentric wheel 251. The eccentric shaft of the eccentric wheel 251 is connected to one end of the link mechanism 23. Correspondingly, a cutter holder 200 is arranged on the upper cutter 20. In this embodiment, the cutter moving part 220 adopts a slot hole structure. Both ends of the cutter holder 200 pass through the slot hole structure of the cutter moving part 220 and are connected to the other end of the link mechanism 23. The upper cutter 20 is driven by the link mechanism 23 to move up and down along the slot hole structure of the cutter moving part 220 to realize the cutting operation.

[0034] For the transverse cutter control device, a cutter seat 210 is arranged at the bottom of the lower cutter 21. A moving track (not shown in the drawings) is arranged on the cutter seat 210. The cutter mechanism realizes the transverse position along the bag making machine through the cutter seat 210 and the moving track. More specifically, the moving track can be realized by a combination of a gear and a rack. The gear and rack structures are respectively arranged on the cutter seat 210 and the frame 1, or the moving track can be in the form of a slide rail. The slider and the track are respectively arranged on the cutter seat 210 and the frame 1, or the moving track can be in the form of a combination of a hole and a lead screw. The hole and the lead screw are respectively arranged on the cutter seat 210 and the frame 1. The above forms are all applicable. In actual use, it can also be in other forms as long as the relative movement between the cutter seat 210 and the frame 1 can be realized, and all are within the protection scope of this solution.

[0035] The displacement control component at least has a bevel gear component 260 and a ball screw component 261 connected to the output end of the bevel gear component 260. More specifically, the bevel gear component 260 has two meshing and driving first bevel gears 2600 and second bevel gears 2601. The shaft end of the first bevel gear 2600 is connected to the synchronous belt mechanism. The synchronous belt mechanism drives the first bevel gear 2600 and the second bevel gear 2601 to rotate. The output end of the ball screw component 261 is connected to the cutter seat 210, driving the cutter seat 210 to generate displacement along the moving track.

[0036] In order to avoid the clearance generated by the bevel gear component 260 and the ball screw component 261 during the control process and improve the cutting position control accuracy of the cutter, the displacement control component also at least has a grating scale 262. The grating scale 262 is connected to the control system of the bag making machine, detects the position information of the cutter seat 210 and feeds it back to the control system, and improves the cutting position control accuracy of the cutter through absolute value control.

[0037] The synchronous belt mechanism at least includes a synchronous belt pulley 280 and a synchronous belt 281. The synchronous belt 281 is disposed around the outside of the output end of the knife moving drive mechanism 27, the outside of the synchronous belt pulley 280, and the outside of the first bevel gear 260, so as to achieve synchronous rotation of the knife moving drive mechanism 27, the synchronous belt pulley 280, and the first bevel gear 260. Among them, the knife moving drive mechanism 27 is set as a servo reduction mechanism.

[0038] In addition, in order to further improve the control accuracy of the cutting position of the cutting knife, a photoelectric sensing device (not shown in the drawings) can also be provided on the bag making machine. The photoelectric sensing device can adopt an existing photoelectric scanner, etc. It is disposed on the frame 1 and is signal-connected to the cutting knife drive device 24 and the knife moving drive device 27 of the high-precision control device of the cutting knife, so as to control the position of the cutting knife mechanism on the frame 1 and complete the cutting operation.

[0039] Obviously, the above-mentioned embodiments of the present invention are only examples for clearly explaining the present invention, rather than limiting the implementation manners of the present invention. For those of ordinary skill in the art, various obvious changes, re-adjustments, and substitutions can be made without departing from the protection scope of the present invention. It is not necessary and impossible to enumerate all the implementation manners here. Any modifications, equivalent substitutions, and improvements made within the spirit and principle of the present invention shall be included in the protection scope of the claims of the present invention.

Claims

1. A high-precision control device for a cutter, characterized in that: At least: A longitudinal cutter control device, the longitudinal cutter control device at least comprises a cutter drive mechanism, a connecting rod mechanism and an eccentric mechanism, the output end of the drive mechanism is connected to the eccentric mechanism, and is connected to the connecting rod mechanism through the eccentric mechanism, and the other end of the connecting rod mechanism is connected to the cutter mechanism to control the longitudinal movement of the cutter mechanism; A transverse cutter control device, the transverse cutter control device at least has a cutter drive mechanism, a synchronous belt mechanism and a displacement control component, the output end of the cutter drive mechanism is connected to the synchronous belt mechanism, the synchronous belt mechanism is connected to the displacement control component, one end of the displacement control component is connected to the cutter mechanism, and controls the overall transverse movement of the cutter mechanism.

2. The high-precision cutter control device according to claim 1, characterized in that: The cutting mechanism comprises at least an upper cutting knife and a lower cutting knife, and the two ends of the upper cutting knife and the lower cutting knife are connected by a cutting knife connecting plate, so that the upper cutting knife and the lower cutting knife form an integral cutting knife group, which can be displaced along the lateral direction of the bag making machine as a whole; wherein, the cutting knife connecting plate is provided with a cutting knife moving part, and the two ends of the upper cutting knife are arranged through the cutting knife moving part, and can be displaced in the up and down directions along the cutting knife moving part.

3. The high-precision cutter control device according to claim 2, characterized in that: The upper cutter is provided with a cutter frame, and both ends of the cutter frame are connected to the connecting rod mechanism through the cutter moving part. The upper cutter is driven by the connecting rod mechanism to move up and down along the cutter moving part to realize cutting operation.

4. The high-precision cutter control device according to claim 2, characterized in that: A cutter seat is arranged at the bottom of the lower cutter, a moving track is arranged on the cutter seat, and the cutter mechanism is positioned horizontally along the bag making machine through the cutter seat and the moving track.

5. The high-precision control device for a cutter according to claim 4, characterized in that: The displacement control assembly at least comprises a bevel gear assembly and a ball screw assembly connected to the output end of the bevel gear assembly, the bevel gear assembly is connected to the synchronous belt mechanism, the synchronous belt mechanism drives the bevel gear assembly to rotate, and the output end of the ball screw assembly is connected to the cutter seat, driving the cutter seat to displace along the moving track.

6. The high-precision cutter control device according to claim 4, characterized in that: The displacement control component also has at least a grating ruler, which is connected to the control system of the bag making machine to detect the position information of the cutter seat and feed it back to the control system, thereby improving the control accuracy through absolute value control.

7. The high-precision cutter control device according to claim 5, characterized in that: The synchronous belt mechanism has at least a synchronous pulley and a synchronous belt. The synchronous belt is arranged around the outer side of the output end of the knife shifting drive mechanism, the outer side of the synchronous pulley and the outer side of the bevel gear assembly to achieve synchronous rotation of the knife shifting drive mechanism, the synchronous pulley and the bevel gear assembly.

8. The high-precision cutter control device according to claim 1, characterized in that: The cutter drive mechanism and the knife moving drive mechanism are both configured as servo speed reduction mechanisms.

9. A bag making machine, characterized in that: The bag making machine at least has a frame, and the high-precision cutter control device described in any one of claims 1 to 8 is installed on the frame to complete the cutting operation.

10. The bag making machine according to claim 9, characterized in that The bag making machine is also provided with a photoelectric sensing device, which is arranged on the frame and is signal-connected to the cutter drive mechanism and the knife moving drive mechanism of the high-precision cutter control device of any one of claims 1 to 8 to control the position of the cutter mechanism on the frame to complete the cutting operation.

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