Automatic splicing device and method for unwinding

Abstract

The application discloses a device for automatically splicing unwound rolls, which comprises a total equipment support, an unwinding rotating tower and a splicing and cutting assembly are rotatably arranged on the total equipment support, an encoder is connected to one side of the splicing and cutting assembly, a stopper and an air cylinder are fixed on the total equipment support, the stopper is located on one side of the unwinding rotating tower and intermittently contacts with the splicing and cutting assembly, and the working end of the air cylinder is hingedly connected with the splicing and cutting assembly; the encoder is also connected with an industrial PLC through a wired connection mode. The device for automatically splicing unwound rolls can simultaneously realize the printing process of upper cutting and inner printing and lower cutting and surface printing, and according to the unwinding and splicing action steps, a mechanical structure is developed, and one execution air cylinder is used to realize the upper and lower cutting conversion of the device for automatically splicing unwound rolls and automatic splicing.

Description

Technical Field

[0001] This invention belongs to the technical field of packaging machinery and equipment, specifically relating to an automatic unwinding and splicing device. This invention also relates to a method for automatic unwinding and splicing using the above-mentioned automatic unwinding and splicing device. Background Technology

[0002] In the printing process, to simultaneously achieve the automatic splicing requirements of "back printing" and "surface printing" during unwinding, two sets of automatic splicing devices are generally needed, one for the upper cutting (back printing) and the other for the lower cutting (surface printing). The advantage is that the corresponding automatic splicing devices are controlled according to different printing processes, without interference between them. The disadvantage is that two sets of automatic splicing devices need to be deployed simultaneously during unwinding, and one set will always be idle depending on the printing process. Traditional automatic unwinding splicing uses three actuators—a swing arm lifting cylinder, a pressure roller receiving cylinder, and a cutting cylinder—to complete the automatic splicing according to the action steps. This equipment is complex and the process is cumbersome. Therefore, a new automatic unwinding splicing device is needed. Summary of the Invention

[0003] The purpose of this invention is to provide an automatic unwinding and splicing device that can simultaneously perform the printing process of "inner printing" on the upper cut and "outer printing" on the lower cut. Based on the unwinding and splicing action steps, a mechanical structure was developed that uses a single actuator cylinder to achieve both the upper and lower cut conversion of the automatic unwinding and splicing device and automatic splicing, thus solving the problem of needing to deploy two sets of automatic splicing devices simultaneously during unwinding.

[0004] The second objective of this invention is to provide a method for automatically splicing unwinding rolls using the aforementioned automatic unwinding splicing device.

[0005] The first technical solution adopted in this invention is an automatic unwinding splicing device, including a main equipment support frame. An unwinding turret and a splicing and cutting component are rotatably mounted on the main equipment support frame. An encoder is connected to one side of the splicing and cutting component. A stopper and a cylinder are also fixedly mounted on the main equipment support frame. The stopper is located on one side of the unwinding turret and intermittently contacts the splicing and cutting component. The working end of the cylinder is hinged to the splicing and cutting component.

[0006] The encoder is also connected to an industrial control PLC via a wired connection.

[0007] The invention is further characterized by:

[0008] The splicing and cutting assembly includes a large swing arm, which includes a rotating shaft. One end of the rotating shaft is rotatably mounted on the main support of the equipment. The two ends of the rotating shaft are vertically connected to a large arm I and a large arm II of equal length. The large arm I is close to the main support of the equipment. The free ends of the large arm I and the large arm II are connected to a blade holder. A set of matching spring swing arm assemblies are respectively provided on the inner sides of the large arm I and the large arm II. It also includes a rubber roller arranged parallel to the rotating shaft. The two ends of the rubber roller are respectively located at the ends of the large arm I and the large arm II away from the rotating shaft. The rubber roller is controlled by the two spring swing arm assemblies. An upper cutting blade and a lower cutting blade are movably mounted in the blade holder. Each spring swing arm assembly is also provided with a first photoelectric sensor for lower cutting, a second photoelectric sensor for lower cutting, a second photoelectric sensor for upper cutting, and a first photoelectric sensor for upper cutting.

[0009] The encoder is mounted on one end of the rotating shaft near the boom II.

[0010] The working end of the cylinder is connected to the middle part of boom I;

[0011] The stopper makes intermittent contact with boom I.

[0012] The spring swing arm assembly includes a spring tail seat, which is fixed to the corresponding main arm by a first bolt. One end of a spring is fixed to one side of the spring tail seat, and the other end of the spring is connected to one end of a screw. The other end of the screw is connected to a pressure roller swing arm through a connector. The end of the pressure roller swing arm near the connector is fixed to the corresponding main arm by two second bolts. A wear-resistant sleeve and a support sleeve are respectively fitted on the second bolts. The wear-resistant sleeve is located on the outside of the pressure roller swing arm, and the support sleeve is located between the main arm and the pressure roller swing arm. Both ends of the rubber roller are fixed to the two pressure roller swing arms respectively.

[0013] The first photoelectric sensor for lower cutting, the second photoelectric sensor for lower cutting, the second photoelectric sensor for upper cutting, and the first photoelectric sensor for upper cutting are mounted on the pressure roller swing arm.

[0014] The unwinding turret shaft is rotatably mounted on the main support of the equipment. The unwinding turret is equipped with unwinding rollers, which are arranged parallel to the rubber rollers.

[0015] The second technical solution adopted in this invention is an automatic unwinding and splicing method, using the aforementioned automatic unwinding and splicing device, with the following specific steps:

[0016] S1. Depending on the printing process, switch between the upper and lower cutting programs. The program confirms the initial position of the splicing and cutting components.

[0017] S2. Prepare the rolls of materials to be used for automatic splicing;

[0018] S3. Automatic unwinding and splicing is performed under the control of industrial PLC to complete the automatic unwinding and splicing.

[0019] The invention is further characterized by:

[0020] The specific method for S1 is as follows:

[0021] The encoder reads the position signal of the splicing and cutting component and transmits the signal to the industrial control PLC. The industrial control PLC controls the cylinder to complete the upper or lower cutting conversion based on the position signal feedback. When the cylinder rod is fully retracted, it is the initial position of upper cutting. When the cylinder rod is fully extended, it is the initial position of lower cutting. During the upper or lower cutting conversion, the stopper is released. After the conversion is completed, the stopper remains in place.

[0022] The specific method for S2 is as follows:

[0023] Apply double-sided tape to the roll of material to be used, and attach a small flag-like label to the corresponding position of the double-sided tape to indicate the position of the double-sided tape. The small label needs to be adjusted along the longitudinal direction of the roll to keep it consistent with the rotation direction of the roll, and the height should be 2.8 to 3.2 cm.

[0024] The specific method for S3 is as follows:

[0025] S3.1 Adjust the unwinding to the running state;

[0026] S3.2 Adjust the splicing and cutting component to the operating position and align it with the stopper. Keep the stopper in place. At this time, the cylinder is in the air-ventilated and ready-to-fire state.

[0027] S3.3 Control the rotation of the unwinding turret. After the end face of the material roll triggers the first photoelectric sensor of the upper cut or the first photoelectric sensor of the lower cut, the unwinding turret stops and the material roll accelerates synchronously.

[0028] S3.4 When the material roll flag indicator rotates, it triggers the upper or lower second photoelectric sensor, and the stopper is released. The cylinder drives the splicing and cutting component to complete the splicing and cutting instantly: the rubber roller presses the material and the upper or lower cutting blade cuts.

[0029] S3.5, the stopper remains in the released state, the splicing and cutting assembly returns to the operating position, the upper or lower cutting blade is reset, the spring swing arm assembly automatically resets the rubber roller, and the cylinder is in the air-cut and pressure-holding positioning state at this time.

[0030] S3.6 The splicing and cutting components return to the initial mode, the blocker remains in place, and the automatic splicing is completed.

[0031] The beneficial effects of this invention are:

[0032] The automatic unwinding and splicing device of this invention can simultaneously achieve the automatic unwinding and splicing requirements of "inner printing" and "outer printing". Based on the unwinding and splicing action steps, a mechanical structure was developed. A single actuator cylinder is used to realize both the upper and lower cutting conversion of the automatic unwinding and splicing device and the automatic splicing. It has a high degree of automation, a compact mechanical structure, and safe and reliable operation. Attached Figure Description

[0033] Figure 1 This is a schematic diagram of the overall structure of the automatic unwinding and splicing device of the present invention;

[0034] Figure 2 This is a schematic diagram of the large swing arm structure in the automatic unwinding splicing device of the present invention;

[0035] Figure 3 This is a schematic diagram of the spring swing arm assembly in the automatic unwinding splicing device of the present invention;

[0036] Figure 4 This is a schematic diagram of the initial cutting position of the automatic unwinding and splicing device of the present invention;

[0037] Figure 5 This is a schematic diagram of the cutting mark and double-sided adhesive position structure on the automatic unwinding splicing device of the present invention;

[0038] Figure 6 This is a schematic diagram of the device state during steps 3.1 to 3.3 of the automatic unwinding splicing device of the present invention.

[0039] Figure 7 This is a schematic diagram of the device state in step 3.4 of the automatic unwinding and splicing device of the present invention during the upper cutting process;

[0040] Figure 8 This is a schematic diagram of the device state in step 3.5 of the automatic unwinding and splicing device of the present invention during the upper cutting process;

[0041] Figure 9 This is a schematic diagram of the device state in step 3.6 of the automatic unwinding and splicing device of the present invention during the upper cutting process;

[0042] Figure 10 This is a schematic diagram of the initial cutting position of the automatic unwinding and splicing device of the present invention;

[0043] Figure 11 This is a schematic diagram of the cutting marker and double-sided adhesive position structure of the automatic unwinding splicing device of the present invention;

[0044] Figure 12 This is a schematic diagram of the device state during steps 3.1 to 3.3 of the automatic unwinding splicing device of the present invention during the cutting process;

[0045] Figure 13 This is a schematic diagram of the device state in step 3.4 of the automatic unwinding splicing device of the present invention during the cutting process;

[0046] Figure 14 This is a schematic diagram of the device state in step 3.5 of the automatic unwinding splicing device of the present invention during the cutting process;

[0047] Figure 15 This is a schematic diagram of the device state in step 3.6 of the automatic unwinding and splicing device of the present invention during the cutting process.

[0048] In the diagram, 1. Splicing and cutting assembly, 2. Encoder, 3. Stopper, 4. Cylinder, 1-1. Large swing arm, 1-1-1. Rotating shaft, 1-1-2. Large arm I, 1-1-3. Blade holder, 1-1-4. Large arm II, 1-2. Spring swing arm assembly, 1-2-1. Spring tailstock, 1-2-2. Spring, 1-2-3. Screw, 1-2-4. Connector, 1-2-5. Wear-resistant sleeve, 1-2-6. Pressure roller swing arm, 1-2-7. Support sleeve, 1-3. Rubber roller, 1-4. Lower cutting first photoelectric sensor, 1-5. Lower cutting second photoelectric sensor, 1-6. Lower cutting blade, 1-7. Upper cutting blade, 1-8. Upper cutting second photoelectric sensor, 1-9. Upper cutting first photoelectric sensor, 1-13. Third connecting rod, 5. Unwinding turret. Detailed Implementation

[0049] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments.

[0050] The present invention provides an automatic unwinding and splicing device, such as... Figure 1 As shown, the equipment includes a main support frame, on which a winding turret 5 and a splicing and cutting assembly 1 are rotatably mounted. An encoder 2 is connected to one side of the splicing and cutting assembly 1. A stopper 3 and a cylinder 4 are also fixedly mounted on the main support frame. The cylinder 4 uses a cylinder body air cut-off pressure holding positioning. The stopper 3 is located on one side of the winding turret 5 and intermittently contacts the splicing and cutting assembly 1. The working end of the cylinder 4 is hinged to the splicing and cutting assembly 1.

[0051] Encoder 2 is also connected to an industrial control PLC via a wired connection. Encoder 2 reads the rotation position signal of splicing and cutting component 1. The industrial control PLC controls cylinder 4 to extend, retract, or stop at any position based on the position signal feedback, that is, splicing and cutting component 1 to rise, fall, or stop at any position.

[0052] Specifically, such as Figure 2As shown, the splicing and cutting assembly 1 includes a large swing arm 1-1. Further, the large swing arm 1-1 includes a rotating shaft 1-1-1. One end of the rotating shaft 1-1-1 is rotatably mounted on the main support of the equipment, ensuring that the splicing and cutting assembly 1 can rotate back and forth under the push of the cylinder 4. The two ends of the rotating shaft 1-1-1 are respectively vertically connected to equal-length upper arms I 1-1-2 and II 1-1-4. Upper arm I 1-1-2 is close to the main support of the equipment. The working end of the cylinder 4 is connected to the middle part of upper arm I 1-1-2. The free ends of upper arms I 1-1-2 and II 1-1-4 are connected to a blade holder 1-1-3. A set of matching spring swing arm assemblies 1-2 are respectively provided on the inner sides of upper arms I 1-1-2 and II 1-1-4. It also includes a rubber roller 1- parallel to the rotating shaft 1-1-1. 3. The two ends of the rubber roller 1-3 are respectively set at the ends of the main arm I 1-1-2 and the main arm II 1-1-4 away from the rotating shaft 1-1-1. The rubber roller 1-3 is controlled by two spring swing arm assemblies 1-2. The upper cutting blade 1-7 and the lower cutting blade 1-6 are respectively movably installed in the blade holder 1-1-3 for lower cutting and upper cutting, respectively. Each spring swing arm assembly 1-2 is also equipped with a first photoelectric sensor 1-4 for lower cutting, a second photoelectric sensor 1-5 for lower cutting, a second photoelectric sensor 1-8 for upper cutting, and a first photoelectric sensor 1-9 for upper cutting. The first photoelectric sensor 1-4 and the second photoelectric sensor 1-5 for lower cutting are respectively set in conjunction with the lower cutting blade 1-6, and the second photoelectric sensor 1-8 and the first photoelectric sensor 1-9 for upper cutting are respectively set in conjunction with the upper cutting blade 1-7.

[0053] During operation, the industrial control PLC controls the cylinder 4 to extend or retract according to the printing process requirements, thereby driving the rotating shaft 1-1-1 to rotate. The boom I 1-1-2, boom II 1-1-4, and knife holder 1-1-3 also rotate accordingly, thus completing the subsequent automatic splicing process.

[0054] Encoder 2 is installed on one end of the rotating shaft 1-1-1 near the boom Ⅱ 1-1-4;

[0055] The stopper 3 is in intermittent contact with the boom I1-1-2. It can be released or held according to the operating status during operation, so that the splicing and cutting assembly 1 can accurately cut the material roll.

[0056] like Figure 3As shown, the spring swing arm assembly 1-2 includes a spring tail seat 1-2-1, which is fixed to the corresponding main arm by a first bolt. One end of the spring 1-2-2 is fixed to one side of the spring tail seat 1-2-1, and the other end of the spring 1-2-2 is connected to one end of the screw 1-2-3. The other end of the screw 1-2-3 is connected to the pressure roller swing arm 1-2-6 through a connector 1-2-4. The end of the pressure roller swing arm 1-2-6 near the connector 1-2-4 is fixed to the corresponding main arm by two second bolts. Wear-resistant sleeve 1-2-5 and support sleeve 1-2-7 are respectively fitted on the second bolts. Wear-resistant sleeve 1-2-5 is located outside the pressure roller swing arm 1-2-6, and support sleeve 1-2-7 is located between the main arm and the pressure roller swing arm 1-2-6. The two ends of the rubber roller 1-3 are fixed to the two pressure roller swing arms 1-2-6 respectively.

[0057] The first photoelectric sensor 1-4 for lower cutting, the second photoelectric sensor 1-5 for lower cutting, the second photoelectric sensor 1-8 for upper cutting, and the first photoelectric sensor 1-9 for upper cutting are mounted on the pressure roller swing arm 1-2-6.

[0058] The unwinding turret 5 is rotatably mounted on the main support of the equipment. The unwinding turret 5 is equipped with an unwinding roller, which is arranged parallel to the rubber rollers 1-3. This design ensures that the material roll can operate normally.

[0059] The automatic unwinding and splicing method, using the aforementioned automatic unwinding and splicing device, involves the following specific steps:

[0060] S1. Depending on the printing process, switch between the upper and lower cutting programs. The program confirms the initial position of the splicing and cutting component 1. The specific method is as follows:

[0061] Encoder 2 reads the position signal of splicing and cutting component 1 and transmits the signal to industrial control PLC. Based on the position signal feedback, industrial control PLC controls cylinder 4 to complete the upper or lower cutting conversion. When cylinder 4 rod is fully retracted, it is the initial position of upper cutting. When cylinder 4 rod is fully extended, it is the initial position of lower cutting. During the upper or lower cutting conversion, stopper 3 is released. After the conversion is completed, stopper 3 is held.

[0062] S2. Prepare the material rolls for automatic splicing, the specific method is as follows:

[0063] Apply double-sided tape to the roll of material to be used, and attach a small flag-like label to the corresponding position of the double-sided tape to indicate the position of the double-sided tape. The small label needs to be adjusted along the longitudinal direction of the roll to keep it consistent with the rotation direction of the roll, and the height should be 2.8 to 3.2 cm.

[0064] S3. Automatic unwinding and splicing is performed under the control of an industrial PLC. The specific method is as follows:

[0065] S3.1 Adjust the unwinding to the running state;

[0066] S3.2 Adjust the splicing and cutting component 1 to the operating position and align it with the stopper 3. Keep the stopper 3 in place. At this time, the cylinder 4 is in the air-ventilated and ready-to-fire state.

[0067] S3.3 Control the unwinding turret 5 to rotate. After the end face of the material roll triggers the upper cutting first photoelectric sensor 1-9 or the lower cutting first photoelectric sensor 1-4, the unwinding turret 5 stops and the material roll accelerates synchronously.

[0068] S3.4 When the material roll flag indicator rotates, it triggers the upper cutting second photoelectric sensor 1-8 or the lower cutting second photoelectric sensor 1-5, the stopper 3 is released, and the cylinder 4 drives the splicing and cutting component 1 to instantly complete the splicing and cutting: the rubber roller 1-3 presses the material and the upper cutting blade 1-7 or the lower cutting blade 1-6 cuts.

[0069] S3.5, the stopper 3 remains in the released state, the splicing and cutting assembly 1 returns to the operating position, the upper cutting blade 1-7 or the lower cutting blade 1-6 is reset, the spring swing arm assembly 1-2 automatically resets the rubber roller 1-2, and at this time the cylinder 4 is in the air cut-off and pressure-holding positioning state.

[0070] S3.6, The splicing and cutting component 1 returns to the initial mode, the blocker 3 remains in place, and the automatic splicing is completed.

[0071] Example 1

[0072] Automatic unwinding splicing device, such as Figure 1 As shown, the equipment includes a main support frame, on which a winding turret 5 and a splicing and cutting assembly 1 are rotatably mounted. An encoder 2 is connected to one side of the splicing and cutting assembly 1. A stopper 3 and a cylinder 4 are also fixedly mounted on the main support frame. The cylinder 4 uses a cylinder body air cut-off pressure holding positioning. The stopper 3 is located on one side of the winding turret 5 and intermittently contacts the splicing and cutting assembly 1. The working end of the cylinder 4 is hinged to the splicing and cutting assembly 1.

[0073] Encoder 2 is also connected to an industrial control PLC via a wired connection. Encoder 2 reads the rotation position signal of splicing and cutting component 1. The industrial control PLC controls cylinder 4 to extend, retract, or stop at any position based on the position signal feedback, that is, splicing and cutting component 1 to rise, fall, or stop at any position.

[0074] Specifically, such as Figure 2As shown, the splicing and cutting assembly 1 includes a large swing arm 1-1. Further, the large swing arm 1-1 includes a rotating shaft 1-1-1. One end of the rotating shaft 1-1-1 is rotatably mounted on the main support of the equipment, ensuring that the splicing and cutting assembly 1 can rotate back and forth under the push of the cylinder 4. The two ends of the rotating shaft 1-1-1 are respectively vertically connected to equal-length upper arms I 1-1-2 and II 1-1-4. Upper arm I 1-1-2 is close to the main support of the equipment. The working end of the cylinder 4 is connected to the middle part of upper arm I 1-1-2. The free ends of upper arms I 1-1-2 and II 1-1-4 are connected to a blade holder 1-1-3. A set of matching spring swing arm assemblies 1-2 are respectively provided on the inner sides of upper arms I 1-1-2 and II 1-1-4. It also includes a rubber roller 1- parallel to the rotating shaft 1-1-1. 3. The two ends of the rubber roller 1-3 are respectively set at the ends of the main arm I 1-1-2 and the main arm II 1-1-4 away from the rotating shaft 1-1-1. The rubber roller 1-3 is controlled by two spring swing arm assemblies 1-2. The upper cutting blade 1-7 and the lower cutting blade 1-6 are respectively movably installed in the blade holder 1-1-3 for lower cutting and upper cutting, respectively. Each spring swing arm assembly 1-2 is also equipped with a first photoelectric sensor 1-4 for lower cutting, a second photoelectric sensor 1-5 for lower cutting, a second photoelectric sensor 1-8 for upper cutting, and a first photoelectric sensor 1-9 for upper cutting. The first photoelectric sensor 1-4 and the second photoelectric sensor 1-5 for lower cutting are respectively set in conjunction with the lower cutting blade 1-6, and the second photoelectric sensor 1-8 and the first photoelectric sensor 1-9 for upper cutting are respectively set in conjunction with the upper cutting blade 1-7.

[0075] During operation, the industrial control PLC controls the cylinder 4 to extend or retract according to the printing process requirements, thereby driving the rotating shaft 1-1-1 to rotate. The boom I 1-1-2, boom II 1-1-4, and knife holder 1-1-3 also rotate accordingly, thus completing the subsequent automatic splicing process.

[0076] Encoder 2 is installed on one end of the rotating shaft 1-1-1 near the boom Ⅱ 1-1-4;

[0077] The stopper 3 is in intermittent contact with the boom I1-1-2. It can be released or held according to the operating status during operation, so that the splicing and cutting assembly 1 can accurately cut the material roll.

[0078] like Figure 3As shown, the spring swing arm assembly 1-2 includes a spring tail seat 1-2-1, which is fixed to the corresponding main arm by a first bolt. One end of the spring 1-2-2 is fixed to one side of the spring tail seat 1-2-1, and the other end of the spring 1-2-2 is connected to one end of the screw 1-2-3. The other end of the screw 1-2-3 is connected to the pressure roller swing arm 1-2-6 through a connector 1-2-4. The end of the pressure roller swing arm 1-2-6 near the connector 1-2-4 is fixed to the corresponding main arm by two second bolts. Wear-resistant sleeve 1-2-5 and support sleeve 1-2-7 are respectively fitted on the second bolts. Wear-resistant sleeve 1-2-5 is located outside the pressure roller swing arm 1-2-6, and support sleeve 1-2-7 is located between the main arm and the pressure roller swing arm 1-2-6. The two ends of the rubber roller 1-3 are fixed to the two pressure roller swing arms 1-2-6 respectively.

[0079] The first photoelectric sensor 1-4 for lower cutting, the second photoelectric sensor 1-5 for lower cutting, the second photoelectric sensor 1-8 for upper cutting, and the first photoelectric sensor 1-9 for upper cutting are mounted on the pressure roller swing arm 1-2-6.

[0080] The unwinding turret 5 is rotatably mounted on the main support of the equipment. The unwinding turret 5 is equipped with an unwinding roller, which is arranged parallel to the rubber rollers 1-3. This design ensures that the material roll can operate normally.

[0081] Example 2

[0082] The automatic unwinding and splicing method, using the aforementioned automatic unwinding and splicing device, involves the following specific steps during the cutting process:

[0083] S1, such as Figure 4 As shown, depending on the printing process ("backside printing" or "surface printing"), switch to the top cutting program. The program confirms the initial position of the splicing and cutting component 1. The specific method is as follows:

[0084] Encoder 2 reads the position signal of splicing and cutting component 1 and transmits the signal to industrial control PLC. Based on the position signal feedback, industrial control PLC controls cylinder 4 to fully retract its rod. At this time, it is the initial position of upper cutting. During the conversion between upper and lower cutting, stopper 3 is released. After the conversion is completed, stopper 3 remains in place.

[0085] S2. Prepare the material rolls for automatic splicing, the specific method is as follows:

[0086] like Figure 5 As shown, attach double-sided tape to the roll of material to be used, and attach a small flag-like label at the corresponding position of the double-sided tape to indicate the position of the double-sided tape. The small label needs to be adjusted along the longitudinal direction of the roll to keep it consistent with the rotation direction of the roll, and the height needs to be 2.8 to 3.2 cm.

[0087] S3. Automatic unwinding and splicing is performed under the control of an industrial PLC. The specific method is as follows:

[0088] S3.1, such as Figure 6 As shown, adjust the unwinding to the operating state;

[0089] S3.2 Adjust the splicing and cutting component 1 to the operating position and align it with the stopper 3. Keep the stopper 3 in place. At this time, the cylinder 4 is in the air-ventilated and ready-to-fire state.

[0090] S3.3 Control the unwinding turret 5 to rotate. When the end face of the material roll rotates, the light and shadow trigger the first photoelectric sensor 1-9 of the upper cutting, the unwinding turret 5 stops, and the material roll accelerates synchronously.

[0091] S3.4, such as Figure 7 As shown, when the material roll flag is rotated, the light and shadow trigger the second photoelectric sensor 1-8 of the upper cutting, the stopper 3 is released, and the cylinder 4 drives the splicing and cutting component 1 to instantly complete the splicing and cutting: the rubber roller 1-3 presses the material and the upper cutting blade 1-7 cuts.

[0092] S3.5, such as Figure 8 As shown, the stopper 3 remains in the released state, the splicing and cutting assembly 1 returns to the operating position, the upper cutting blade 1-7 is reset, the spring swing arm assembly 1-2 automatically resets the rubber roller 1-2, and at this time the cylinder 4 is in the air cut-off and pressure-holding positioning state.

[0093] S3.6, such as Figure 9 As shown, the splicing and cutting component 1 returns to the initial mode, the blocker 3 remains in place, and the automatic splicing is completed.

[0094] Example 3

[0095] The automatic unwinding and splicing method, using the aforementioned automatic unwinding and splicing device, involves the following specific steps during cutting:

[0096] S1, such as Figure 10 As shown, depending on the printing process ("backside printing" or "surface printing"), switch to the bottom cutting program. The program confirms the initial position of the splicing and cutting component 1. The specific method is as follows:

[0097] Encoder 2 reads the position signal of splicing and cutting component 1 and transmits the signal to industrial control PLC. Based on the position signal feedback, industrial control PLC controls cylinder 4 to fully extend its rod. At this time, it is the initial position of lower cutting. During the conversion between upper and lower cutting, stopper 3 is released. After the conversion is completed, stopper 3 is held.

[0098] S2. Prepare the material rolls for automatic splicing, the specific method is as follows:

[0099] like Figure 11As shown, attach double-sided tape to the roll of material to be used, and attach a small flag-like label at the corresponding position of the double-sided tape to indicate the position of the double-sided tape. The small label needs to be adjusted along the longitudinal direction of the roll to keep it consistent with the rotation direction of the roll, and the height needs to be 2.8 to 3.2 cm.

[0100] S3. Automatic unwinding and splicing is performed under the control of an industrial PLC. The specific method is as follows:

[0101] S3.1, such as Figure 12 As shown, adjust the unwinding to the operating state;

[0102] S3.2 Adjust the splicing and cutting component 1 to the operating position and align it with the stopper 3. Keep the stopper 3 in place. At this time, the cylinder 4 is in the air-ventilated and ready-to-fire state.

[0103] S3.3 Control the unwinding turret 5 to rotate. After the light and shadow trigger the first photoelectric sensor 1-4 of the lower cut when the end face of the material roll rotates, the unwinding turret 5 stops and the material roll accelerates synchronously.

[0104] S3.4, such as Figure 13 As shown, when the material roll flag is rotated, the light and shadow trigger the second photoelectric sensor 1-5 for cutting, the stopper 3 is released, and the cylinder 4 drives the splicing and cutting component 1 to instantly complete the splicing and cutting: the rubber roller 1-3 presses the material and the cutting blade 1-6 cuts.

[0105] S3.5, such as Figure 14 As shown, the stopper 3 remains in the released state, the splicing and cutting assembly 1 returns to the operating position, the lower cutting blade 1-6 is reset, the spring swing arm assembly 1-2 automatically resets the rubber roller 1-2, and at this time the cylinder 4 is in the air-cut and pressure-holding positioning state.

[0106] S3.6, such as Figure 15 As shown, the splicing and cutting component 1 returns to the initial mode, the blocker 3 remains in place, and the automatic splicing is completed.

Claims

1. An automatic unwinding and splicing device, characterized in that, The equipment includes a main support frame, on which a winding turret (5) and a splicing and cutting assembly (1) are rotatably mounted. An encoder (2) is connected to one side of the splicing and cutting assembly (1). A stopper (3) and a cylinder (4) are also fixedly mounted on the main support frame. The stopper (3) is located on one side of the winding turret (5) and intermittently contacts the splicing and cutting assembly (1). The working end of the cylinder (4) is hinged to the splicing and cutting assembly (1). The encoder (2) is also connected to an industrial control PLC via a wired connection. The splicing and cutting assembly (1) includes a large swing arm (1-1), which includes a pivot (1-1-1). One end of the pivot (1-1-1) is rotatably mounted on the main support of the equipment. The two ends of the pivot (1-1-1) are respectively vertically connected to a large arm I (1-1-2) and a large arm II (1-1-4) of equal length. The large arm I (1-1-2) is close to the main support of the equipment. The free ends of the large arms I (1-1-2) and the large arm II (1-1-4) are connected to a blade holder (1-1-3). On the inner sides of the large arms I (1-1-2) and the large arm II (1-1-4), a set of matching spring swing arm assemblies (1-2) are respectively provided. It also includes a rubber roller (1-3) arranged parallel to the rotating shaft (1-1-1). The two ends of the rubber roller (1-3) are respectively located at the ends of the upper arm I (1-1-2) and the upper arm II (1-1-4) away from the rotating shaft (1-1-1). The rubber roller (1-3) is jointly controlled by two spring swing arm assemblies (1-2). The upper cutting blade (1-7) and the lower cutting blade (1-6) are respectively movably arranged in the blade holder (1-1-3). Each spring swing arm assembly (1-2) is also respectively provided with a lower cutting first photoelectric sensor (1-4), a lower cutting second photoelectric sensor (1-5), an upper cutting second photoelectric sensor (1-8), and an upper cutting first photoelectric sensor (1-9). The encoder (2) is located on one end of the rotating shaft (1-1-1) near the upper arm II (1-1-4); The working end of the cylinder (4) is connected to the middle part of the boom I (1-1-2); The stopper (3) makes intermittent contact with the upper arm I (1-1-2); The encoder (2) reads the position signal of the splicing and cutting component (1) and transmits the signal to the industrial control PLC. The industrial control PLC controls the cylinder (4) to complete the upper or lower cutting conversion based on the position signal feedback. When the cylinder rod of the cylinder (4) is fully retracted, it is the initial position of upper cutting. When the cylinder rod of the cylinder (4) is fully extended, it is the initial position of lower cutting. During the conversion of upper or lower cutting, the stopper (3) is released. After the conversion is completed, the stopper (3) is held.

2. The automatic unwinding and splicing device according to claim 1, characterized in that, The spring swing arm assembly (1-2) includes a spring tail seat (1-2-1), which is fixed to the corresponding main arm by a first bolt. One end of a spring (1-2-2) is fixed to one side of the spring tail seat (1-2-1), and the other end of the spring (1-2-2) is connected to one end of a screw (1-2-3). The other end of the screw (1-2-3) is connected to a pressure roller swing arm (1-2-6) via a connector (1-2-4). 1-2-6) The end near the joint (1-2-4) is fixed to the corresponding main arm by two second bolts. The second bolts are respectively fitted with wear-resistant sleeves (1-2-5) and support sleeves (1-2-7). The wear-resistant sleeves (1-2-5) are located outside the pressure roller swing arm (1-2-6), and the support sleeves (1-2-7) are located between the main arm and the pressure roller swing arm (1-2-6). The two ends of the rubber roller (1-3) are respectively fixed on the two pressure roller swing arms (1-2-6). The first photoelectric sensor (1-4), the second photoelectric sensor (1-5), the second photoelectric sensor (1-8), and the first photoelectric sensor (1-9) for the upper cutting are mounted on the pressure roller swing arm (1-2-6).

3. The automatic unwinding and splicing device according to claim 1, characterized in that, The unwinding turret (5) is rotatably mounted on the main support of the equipment. The unwinding turret (5) is equipped with an unwinding roller, which is arranged parallel to the rubber roller (1-3).

4. An automatic unwinding and splicing method, characterized in that, The specific steps of using the automatic unwinding and splicing device as described in any one of claims 1 to 3 are as follows: S1. According to the printing process, switch between the upper and lower cutting programs, and the program confirms the initial position of the splicing and cutting components (1). S2. Prepare the rolls of materials to be used for automatic splicing; S3. Automatic unwinding and splicing is performed under the control of industrial PLC to complete the automatic unwinding and splicing.

5. The automatic unwinding and splicing method according to claim 4, characterized in that, The specific method of S2 is as follows: Apply double-sided tape to the roll of material to be used, and attach a small flag-like label to the corresponding position of the double-sided tape to indicate the position of the double-sided tape. The small label needs to be adjusted along the longitudinal direction of the roll to keep it consistent with the rotation direction of the roll, and the height should be 2.8~3.2 cm.

6. The automatic unwinding and splicing method according to claim 4, characterized in that, The specific method of S3 is as follows: S3.1 Adjust the unwinding to the running state; S3.2 Adjust the splicing and cutting component (1) to rotate to the operating position and align it with the stopper (3). The stopper (3) is held in place. At this time, the cylinder (4) is in the air-ventilated and ready-to-fire state. S3.3 Control the unwinding turret (5) to rotate. After the end face of the material roll triggers the first photoelectric sensor (1-9) of the upper cutting or the first photoelectric sensor (1-4) of the lower cutting, the unwinding turret (5) stops and the material roll accelerates synchronously. S3.4 When the small flag of the material roll rotates, it triggers the upper cutting second photoelectric sensor (1-8) or the lower cutting second photoelectric sensor (1-5), the stopper (3) is released, and the cylinder (4) drives the splicing and cutting component (1) to complete the splicing and cutting instantly: the rubber roller (1-3) presses the material - the upper cutting blade (1-7) or the lower cutting blade (1-6) cuts; S3.5, the stopper (3) remains in the released state, the splicing and cutting assembly (1) returns to the operating position, the upper cutting blade (1-7) or the lower cutting blade (1-6) resets, the spring swing arm assembly (1-2) automatically resets the rubber roller (1-3), and at this time the cylinder (4) is in the air-cut and pressure-holding positioning state. S3.6, The splicing and cutting component (1) returns to the initial mode, the blocker (3) remains in place, and the automatic splicing is completed.

Images