Automatic unreeling splicing device and automatic unreeling splicing method

Abstract

The invention discloses an unwinding automatic splicing device which comprises an equipment main support, an unwinding rotating tower and a splicing and cutting assembly are rotationally arranged on the equipment main support, an encoder is connected to one side of the splicing and cutting assembly, and a stopper and an air cylinder are fixedly arranged on the equipment main support. The stopper is located on one side of the unwinding rotating tower and makes intermittent contact with the splicing and cutting assembly, and the working end of the air cylinder is hinged to the splicing and cutting assembly. The encoder is further connected with an industrial control PLC in a wired connection mode. According to the unwinding automatic splicing device, the printing technology of upper cutting inner printing and lower cutting surface printing can be achieved at the same time, a mechanical structure is developed according to the unwinding splicing action steps, upper cutting and lower cutting conversion of the unwinding automatic splicing device is achieved through one execution air cylinder, and automatic splicing is achieved.

Description

Technical Field

[0001] The present invention belongs to the technical field of packaging machinery and equipment, and in particular relates to an automatic unwinding splicing device. The present invention also relates to a method for performing automatic unwinding splicing by utilizing the automatic unwinding splicing device. Background Art

[0002] During the printing process, in order to realize the automatic splicing requirements of the unwinding process of "inner printing" and "surface printing" at the same time, two sets of automatic splicing devices are required for unwinding, which are used for upper cutting of "inner printing" and lower cutting of "surface printing" respectively. The advantage is that the corresponding automatic splicing devices can be controlled according to different printing processes without interference with each other. The disadvantage is that two sets of automatic splicing devices need to be arranged at the same time for unwinding, and there will always be one set of automatic splicing devices idle for different printing processes. Traditional unwinding automatic splicing will set three execution cylinders to complete the automatic splicing according to the action steps: swing arm lifting cylinder, pressure roller receiving cylinder and cutting knife cylinder. The equipment is complex and the process is cumbersome. Therefore, a new unwinding automatic splicing device is needed. Summary of the invention

[0003] The purpose of the present invention is to provide an automatic unwinding splicing device, which can simultaneously realize the printing processes of "inside printing" of the upper cutting and "surface printing" of the lower cutting, and develop a mechanical structure according to the unwinding splicing action steps, using an execution cylinder to realize both the upper and lower cutting conversion of the automatic unwinding splicing device and the automatic splicing, thereby solving the problem that two sets of automatic splicing devices need to be arranged simultaneously for unwinding.

[0004] The second object of the present invention is to provide a method for automatic unwinding and splicing using the above-mentioned automatic unwinding and splicing device.

[0005] The first technical solution adopted by the present invention is that the unwinding automatic splicing device includes a general equipment support, on which a unwinding turret and a splicing and cutting assembly are rotatably arranged respectively, an encoder is connected to one side of the splicing and cutting assembly, a blocker and a cylinder are fixedly arranged on the general equipment support respectively, the blocker is located on one side of the unwinding turret and is in intermittent contact with the splicing and cutting assembly, and a working end of the cylinder is hinged to the splicing and cutting assembly;

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

[0007] The present invention is also characterized in that:

[0008] The splicing and cutting assembly comprises a large swing arm frame, which comprises a rotating shaft, one end of which is rotatably arranged on the main bracket of the equipment, and the two ends of the rotating shaft are respectively vertically connected with a large arm I and a large arm II of equal length, the large arm I is close to the main bracket of the equipment, and the free ends of the large arm I and the large arm II are commonly connected with a knife seat, and a group of spring swing arm assemblies matching each other are respectively arranged on the opposite inner sides of the large arm I and the large arm II, and also comprises a rubber roller arranged in parallel with the rotating shaft, and the two ends of the rubber roller are respectively arranged at the ends of the large arm I and the large arm II away from the rotating shaft, and the rubber roller is jointly controlled by two spring swing arm assemblies, and an upper cutting blade and a lower cutting blade are respectively movably arranged in the knife seat, and each spring swing arm assembly is also respectively 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 arranged on one end of the rotating shaft close to the upper arm II;

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

[0011] The blocker is in intermittent contact with the upper arm Ⅰ.

[0012] The spring swing arm assembly includes a spring tail seat, which is fixed to the corresponding large arm by a first bolt, one end of a spring is fixedly connected to one side of the spring tail seat, 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 joint, and one end of the pressure roller swing arm close to the joint is respectively fixed to the corresponding large arm by two second bolts, and the second bolts are respectively sleeved with a wear-resistant sleeve and a support sleeve, the wear-resistant sleeve is located on the outside of the pressure roller swing arm, the support sleeve is located between the large arm and the pressure roller swing arm, and the two ends of the rubber roller are respectively fixed to the two pressure roller swing arms;

[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 arranged on the pressure roller swing arm.

[0014] The unwinding turret is axially rotatably arranged on the equipment main bracket, and an unwinding roller is arranged on the unwinding turret, and the unwinding roller is arranged parallel to the rubber roller.

[0015] The second technical solution adopted by the present invention is an automatic unwinding splicing method, using the above-mentioned automatic unwinding splicing device, and the specific steps are as follows:

[0016] S1. According to the printing process "inside printing" or "surface printing", switch the upper and lower cutting programs, and the program confirms the initial position of the splicing and cutting components;

[0017] S2, prepare the material rolls to be used for automatic splicing;

[0018] S3, automatic unwinding and splicing are performed through industrial control PLC control to complete automatic unwinding and splicing.

[0019] The present invention is also characterized in that:

[0020] The specific method of S1 is:

[0021] The encoder reads the position signal of the splicing and cutting components and transmits the signal to the industrial control PLC. The industrial control PLC controls the cylinder to complete the upper cutting or lower cutting conversion based on the position signal feedback. When the cylinder rod is fully retracted, it is the initial position for upper cutting, and when the cylinder rod is fully extended, it is the initial position for lower cutting. During the conversion process of upper cutting or lower cutting, the blocker is released, and after the conversion is completed, the blocker is maintained.

[0022] The specific method of S2 is:

[0023] Attach double-sided tape to the roll to be used, and attach a small flag-like mark at the corresponding position of the double-sided tape to indicate the position of the double-sided tape. The small mark 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.

[0024] The specific methods of S3 are:

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

[0026] S3.2, adjust the splicing and cutting assembly to rotate to the operating position, align with the blocker, and keep the blocker. At this time, the cylinder is in the ventilation standby state;

[0027] S3.3, control the unwinding turret to rotate, and after the end surface of the material roll triggers the first photoelectric sensor for upper cutting or the first photoelectric sensor for lower cutting, the unwinding turret stops and the material roll accelerates synchronously;

[0028] S3.4. When the small flag on the roll of material turns and triggers the second photoelectric sensor for upper cutting or the second photoelectric sensor for lower cutting, the blocker is released, and the cylinder drives the splicing and cutting components to instantly complete the splicing and cutting: the rubber roller presses the material - the upper cutting blade or the lower cutting blade cuts;

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

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

[0031] The beneficial effects of the present invention are:

[0032] The automatic unwinding splicing device of the present invention can simultaneously realize the automatic unwinding splicing requirements of "inner printing" and "outer printing", and develops a mechanical structure according to the unwinding splicing action steps. An execution cylinder is used to realize the upper and lower cutting conversion of the automatic unwinding splicing device and realize automatic splicing. The degree of automation is high, the mechanical structure is compact, and the action is safe and reliable. BRIEF DESCRIPTION OF THE DRAWINGS

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

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

[0035] Figure 3 It is a schematic diagram of the structure 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 position of the unwinding automatic splicing device of the present invention;

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

[0038] Figure 6 This is a schematic diagram of the device states of steps 3.1 to 3.3 during the cutting process of the unwinding automatic splicing device of the present invention;

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

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

[0041] Fig. 9 This is a schematic diagram of the device status of step 3.6 during the cutting process of the unwinding automatic splicing device of the present invention;

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

[0043] Fig.11 It is a schematic diagram of the structure of the marking and double-sided adhesive tape position when cutting the roll-off automatic splicing device of the present invention;

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

[0045] Fig.13 This is a schematic diagram of the device status of step 3.4 of the automatic unwinding splicing device during the lower cutting of the present invention;

[0046] Fig.14 This is a schematic diagram of the device state of step 3.5 of the automatic unwinding splicing device of the present invention during the lower cutting;

[0047] Fig.15 This is a schematic diagram of the device status of step 3.6 of the automatic unwinding splicing device during cutting of the present invention.

[0048] In the figure, 1. splicing and cutting assembly, 2. encoder, 3. blocker, 4. cylinder, 1-1. large swing arm frame, 1-1-1. rotating shaft, 1-1-2. large arm Ⅰ, 1-1-3. knife seat, 1-1-4. large arm Ⅱ, 1-2. spring swing arm assembly, 1-2-1. spring tail seat, 1-2-2. spring, 1-2-3. screw, 1-2-4. joint, 1-2-5. wear-resistant sleeve, 1-2-6. pressure roller swing arm, 1-2-7. support sleeve, 1-3. rubber roller, 1-4. first photoelectric sensor for lower cutting, 1-5. second photoelectric sensor for lower cutting, 1-6. lower cutting blade, 1-7. upper cutting blade, 1-8. second photoelectric sensor for upper cutting, 1-9. first photoelectric sensor for upper cutting, 1-13. third connecting rod, 5. unwinding turret. DETAILED DESCRIPTION

[0049] The present invention is described in detail below with reference to the accompanying drawings and specific embodiments.

[0050] The automatic unwinding splicing device of the present invention is as follows: Figure 1 As shown, it includes a general equipment support, on which an unwinding turret 5 and a splicing and cutting assembly 1 are rotatably provided, and an encoder 2 is connected to one side of the splicing and cutting assembly 1. A blocker 3 and a cylinder 4 are also fixedly provided on the general equipment support, and the gas circuit of the cylinder 4 adopts a cylinder body gas cut-off pressure maintenance positioning, the blocker 3 is located on one side of the unwinding turret 5 and is in intermittent contact with the splicing and cutting assembly 1, and the working end of the cylinder 4 is hinged to the splicing and cutting assembly 1;

[0051] The encoder 2 is also connected to the industrial control PLC through a wired connection. The encoder 2 reads the rotation position signal of the splicing and cutting component 1. The industrial control PLC controls the cylinder rod of the cylinder 4 to extend, retract or stop at any position based on the position signal feedback, that is, the splicing and cutting component 1 rises, falls or stops at any position.

[0052] Specifically, Figure 2As shown, the splicing and cutting assembly 1 includes a large swing arm frame 1-1. Further, the large swing arm frame 1-1 includes a rotating shaft 1-1-1. One end of the rotating shaft 1-1-1 is rotatably arranged on the main bracket of the equipment to ensure 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 with large arms Ⅰ1-1-2 and large arms Ⅱ1-1-4 of equal length. The large arm Ⅰ1-1-2 is close to the main bracket of the equipment. The working end of the cylinder 4 is connected to the middle part of the large arm Ⅰ1-1-2. The free ends of the large arms Ⅰ1-1-2 and large arms Ⅱ1-1-4 are commonly connected with a knife seat 1-1-3. A group of spring swing arm assemblies 1-2 that match each other are respectively arranged on the opposite inner sides of the large arms Ⅰ1-1-2 and large arms Ⅱ1-1-4. It also includes a rubber roller 1- 3. Both ends of the rubber roller 1-3 are respectively arranged at one end of the upper arm Ⅰ1-1-2 and the upper arm Ⅱ1-1-4 away from the rotating shaft 1-1-1. The rubber roller 1-3 is jointly controlled by two spring swing arm assemblies 1-2. An upper cutting blade 1-7 and a lower cutting blade 1-6 are movably arranged in the knife seat 1-1-3, which are used for lower cutting and upper cutting respectively. 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, wherein the lower cutting first photoelectric sensor 1-4 and the lower cutting second photoelectric sensor 1-5 are respectively arranged in conjunction with the lower cutting blade 1-6, and the upper cutting second photoelectric sensor 1-8 and the upper cutting first photoelectric sensor 1-9 are respectively arranged in conjunction with the upper cutting blade 1-7.

[0053] During operation, the industrial control PLC controls the cylinder 4 to extend or contract according to the required mode of the printing process, thereby driving the rotating shaft 1-1-1 to rotate, and the upper arm Ⅰ1-1-2, the upper arm Ⅱ1-1-4 and the knife seat 1-1-3 all rotate accordingly, thereby completing the subsequent automatic splicing process.

[0054] The encoder 2 is arranged on one end of the rotating shaft 1-1-1 close to the upper arm II 1-1-4;

[0055] The blocker 3 is in intermittent contact with the upper arm Ⅰ1-1-2, and can be released or maintained according to the running state 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, and the spring tail seat 1-2-1 is fixed to the corresponding big arm by a first bolt, one end of the spring 1-2-2 is fixedly connected 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, and the other end of the screw 1-2-3 is connected to the pressure roller swing arm 1-2-6 through a joint 1-2-4, and the end of the pressure roller swing arm 1-2-6 close to the joint 1-2-4 is fixed to the corresponding big arm by two second bolts, and the second bolts are respectively provided with a wear-resistant sleeve 1-2-5 and a support sleeve 1-2-7, the wear-resistant sleeve 1-2-5 is located on the outside of the pressure roller swing arm 1-2-6, and the support sleeve 1-2-7 is located between the big arm and the pressure roller swing arm 1-2-6, and the two ends of the rubber roller 1-3 are respectively fixed to the two pressure roller swing arms 1-2-6.

[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 arranged on the pressure roller swing arm 1-2-6.

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

[0059] The automatic unwinding splicing method uses the automatic unwinding splicing device, and the specific steps are as follows:

[0060] S1. According to the printing process "inside printing" or "surface printing", switch the upper and lower cutting programs, and the program confirms the initial position of the splicing and cutting component 1. The specific method is:

[0061] 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 cutting or lower cutting conversion according to the position signal feedback. When the cylinder rod of the cylinder 4 is fully retracted, it is the initial position of the upper cutting, and when the cylinder rod of the cylinder 4 is fully extended, it is the initial position of the lower cutting. During the conversion process of the upper cutting or the lower cutting, the blocker 3 is released, and after the conversion is completed, the blocker 3 is maintained.

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

[0063] Attach double-sided tape to the roll to be used, and attach a small flag-like mark at the corresponding position of the double-sided tape to indicate the position of the double-sided tape. The small mark 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.

[0064] S3, automatic unwinding and splicing are performed through industrial control PLC control to complete automatic unwinding and splicing. The specific method is:

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

[0066] S3.2, adjust the splicing and cutting assembly 1 to rotate to the operating position, align with the blocker 3, and the blocker 3 is maintained. At this time, the cylinder 4 is in the ventilation standby state;

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

[0068] S3.4, when the small flag on the roll of material rotates and triggers the second photoelectric sensor 1-8 for upper cutting or the second photoelectric sensor 1-5 for lower cutting, the blocker 3 is released, and the cylinder 4 drives the splicing and cutting assembly 1 to instantly complete the splicing and cutting: the rubber roller 1-3 presses the material - the upper cutting blade 1-7 or the lower cutting blade 1-6 cuts;

[0069] S3.5, the blocker 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 the cylinder 4 is in the air-off pressure-maintaining positioning state;

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

[0071] Example 1

[0072] Unwinding automatic splicing device, such as Figure 1 As shown, it includes a general equipment support, on which an unwinding turret 5 and a splicing and cutting assembly 1 are rotatably provided, and an encoder 2 is connected to one side of the splicing and cutting assembly 1. A blocker 3 and a cylinder 4 are also fixedly provided on the general equipment support, and the gas circuit of the cylinder 4 adopts a cylinder body gas cut-off pressure maintenance positioning, the blocker 3 is located on one side of the unwinding turret 5 and is in intermittent contact with the splicing and cutting assembly 1, and the working end of the cylinder 4 is hinged to the splicing and cutting assembly 1;

[0073] The encoder 2 is also connected to the industrial control PLC through a wired connection. The encoder 2 reads the rotation position signal of the splicing and cutting component 1. The industrial control PLC controls the cylinder rod of the cylinder 4 to extend, retract or stop at any position based on the position signal feedback, that is, the splicing and cutting component 1 rises, falls or stops at any position.

[0074] Specifically, Figure 2As shown, the splicing and cutting assembly 1 includes a large swing arm frame 1-1. Further, the large swing arm frame 1-1 includes a rotating shaft 1-1-1. One end of the rotating shaft 1-1-1 is rotatably arranged on the main bracket of the equipment to ensure 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 with large arms Ⅰ1-1-2 and large arms Ⅱ1-1-4 of equal length. The large arm Ⅰ1-1-2 is close to the main bracket of the equipment. The working end of the cylinder 4 is connected to the middle part of the large arm Ⅰ1-1-2. The free ends of the large arms Ⅰ1-1-2 and large arms Ⅱ1-1-4 are commonly connected with a knife seat 1-1-3. A group of spring swing arm assemblies 1-2 that match each other are respectively arranged on the opposite inner sides of the large arms Ⅰ1-1-2 and large arms Ⅱ1-1-4. It also includes a rubber roller 1- 3. Both ends of the rubber roller 1-3 are respectively arranged at one end of the upper arm Ⅰ1-1-2 and the upper arm Ⅱ1-1-4 away from the rotating shaft 1-1-1. The rubber roller 1-3 is jointly controlled by two spring swing arm assemblies 1-2. An upper cutting blade 1-7 and a lower cutting blade 1-6 are movably arranged in the knife seat 1-1-3, which are used for lower cutting and upper cutting respectively. 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, wherein the lower cutting first photoelectric sensor 1-4 and the lower cutting second photoelectric sensor 1-5 are respectively arranged in conjunction with the lower cutting blade 1-6, and the upper cutting second photoelectric sensor 1-8 and the upper cutting first photoelectric sensor 1-9 are respectively arranged in conjunction with the upper cutting blade 1-7.

[0075] During operation, the industrial control PLC controls the cylinder 4 to extend or contract according to the required mode of the printing process, thereby driving the rotating shaft 1-1-1 to rotate, and the upper arm Ⅰ1-1-2, the upper arm Ⅱ1-1-4 and the knife seat 1-1-3 all rotate accordingly, thereby completing the subsequent automatic splicing process.

[0076] The encoder 2 is arranged on one end of the rotating shaft 1-1-1 close to the upper arm II 1-1-4;

[0077] The blocker 3 is in intermittent contact with the upper arm Ⅰ1-1-2, and can be released or maintained according to the running state 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, and the spring tail seat 1-2-1 is fixed to the corresponding big arm by a first bolt, one end of the spring 1-2-2 is fixedly connected 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, and the other end of the screw 1-2-3 is connected to the pressure roller swing arm 1-2-6 through a joint 1-2-4, and the end of the pressure roller swing arm 1-2-6 close to the joint 1-2-4 is fixed to the corresponding big arm by two second bolts, and the second bolts are respectively provided with a wear-resistant sleeve 1-2-5 and a support sleeve 1-2-7, the wear-resistant sleeve 1-2-5 is located on the outside of the pressure roller swing arm 1-2-6, and the support sleeve 1-2-7 is located between the big arm and the pressure roller swing arm 1-2-6, and the two ends of the rubber roller 1-3 are respectively fixed to the two pressure roller swing arms 1-2-6.

[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 arranged on the pressure roller swing arm 1-2-6.

[0080] The unwinding turret 5 is axially rotatably arranged on the main support of the equipment. An unwinding roller is arranged on the unwinding turret 5. The unwinding roller 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 splicing method uses the automatic unwinding splicing device described above, and the specific steps for cutting are as follows:

[0083] S1, such as Figure 4 As shown, according to the printing process "inside printing" or "surface printing", switch to the upper cutting program, the program confirms the initial position of the splicing and cutting component 1, the specific method is:

[0084] 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 rod of cylinder 4 to fully retract according to the position signal feedback. This is the initial position of the upper cutting. During the conversion process of upper cutting or lower cutting, the blocker 3 is released. After the conversion is completed, the blocker 3 is maintained.

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

[0086] like Figure 5 As shown, stick double-sided tape on the roll to be used, and stick a small flag-like mark at the corresponding position of the double-sided tape to indicate the position of the double-sided tape. The small mark 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 are performed through industrial control PLC control to complete automatic unwinding and splicing. The specific method is:

[0088] S3.1, if Figure 6 As shown, adjust the unwinding to the running state;

[0089] S3.2, adjust the splicing and cutting assembly 1 to rotate to the operating position, align with the blocker 3, and the blocker 3 is maintained. At this time, the cylinder 4 is in the ventilation standby state;

[0090] S3.3, control the unwinding turret 5 to rotate, and after the light and shadow on the end surface of the material roll rotates and triggers the first photoelectric sensor 1-9 for upper cutting, the unwinding turret 5 stops, and the material roll accelerates synchronously;

[0091] S3.4, such as Figure 7 As shown, when the small flag mark of the material roll rotates, the light and shadow triggers the second photoelectric sensor 1-8 for upper cutting, the blocker 3 is released, and the cylinder 4 drives the splicing and cutting assembly 1 to instantly complete the splicing and cutting: the rubber roller 1-3 presses the material - the upper cutting blade 1-7 cuts;

[0092] S3.5, if Figure 8 As shown, the blocker 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, and the spring swing arm assembly 1-2 automatically resets the rubber roller 1-2. At this time, the cylinder 4 is in the air-off pressure-maintaining positioning state;

[0093] S3.6, if Fig. 9 As shown, the splicing and cutting assembly 1 returns to the initial mode, the blocker 3 is maintained, and the automatic splicing is completed.

[0094] Example 3

[0095] The automatic unwinding splicing method uses the automatic unwinding splicing device described above, and the specific steps for cutting are as follows:

[0096] S1, such as Fig.10 As shown, according to the printing process "inside 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:

[0097] 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 rod of cylinder 4 to fully extend according to the position signal feedback. This is the initial position for lower cutting. During the conversion process of upper cutting or lower cutting, blocker 3 is released. After the conversion is completed, blocker 3 is maintained.

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

[0099] like Fig.11As shown, stick double-sided tape on the roll to be used, and stick a small flag-like mark at the corresponding position of the double-sided tape to indicate the position of the double-sided tape. The small mark 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 are performed through industrial control PLC control to complete automatic unwinding and splicing. The specific method is as follows:

[0101] S3.1, if Fig.12 As shown, adjust the unwinding to the running state;

[0102] S3.2, adjust the splicing and cutting assembly 1 to rotate to the operating position, align with the blocker 3, and the blocker 3 is maintained. At this time, the cylinder 4 is in the ventilation standby state;

[0103] S3.3, control the unwinding turret 5 to rotate, and after the light and shadow on the end surface of the material roll rotates and triggers the first photoelectric sensor 1-4 for cutting, the unwinding turret 5 stops and the material roll is accelerated synchronously;

[0104] S3.4, such as Fig.13 As shown, when the small flag mark of the material roll rotates, the light and shadow triggers the second photoelectric sensor 1-5 for lower cutting, the blocker 3 is released, and the cylinder 4 drives the splicing and cutting assembly 1 to instantly complete the splicing and cutting: the rubber roller 1-3 presses the material - the lower cutting blade 1-6 cuts;

[0105] S3.5, if Fig.14 As shown, the blocker 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, and the spring swing arm assembly 1-2 automatically resets the rubber roller 1-2. At this time, the cylinder 4 is in the air-off pressure-maintaining positioning state;

[0106] S3.6, if Fig.15 As shown, the splicing and cutting assembly 1 returns to the initial mode, the blocker 3 is maintained, and the automatic splicing is completed.

Claims

1. Automatic unwinding splicing device, It is characterized in that The invention comprises a main equipment support, on which a reeling turret (5) and a splicing and cutting assembly (1) are rotatably mounted, one side of the splicing and cutting assembly (1) is connected to an encoder (2), and a blocker (3) and a cylinder (4) are fixedly mounted on the main equipment support, the blocker (3) is located on one side of the reeling turret (5) and is in intermittent contact with the splicing and cutting assembly (1), and a 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.

2. According to the unwinding automatic splicing device of claim 1, It is characterized in that The splicing and cutting assembly (1) comprises a large swing arm frame (1-1), the large swing arm frame (1-1) comprises a rotating shaft (1-1-1), one end of the rotating shaft (1-1-1) is rotatably arranged on the equipment main bracket, the two ends of the rotating shaft (1-1-1) are respectively vertically connected with 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 equipment main bracket, the free ends of the large arm I (1-1-2) and the large arm II (1-1-4) are commonly connected with a knife seat (1-1-3), and a group of spring swing arm assemblies (1-2) that match each other are respectively arranged on the opposite inner sides of the large arm I (1-1-2) and the large arm II (1-1-4) , further comprising a rubber roller (1-3) arranged in parallel with the rotating shaft (1-1-1), the two ends of the rubber roller (1-3) being respectively arranged 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) being jointly controlled by two spring swing arm assemblies (1-2), an upper cutting blade (1-7) and a lower cutting blade (1-6) being movably arranged in the knife seat (1-1-3), and each of the spring swing arm assemblies (1-2) being 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 arranged on one end of the rotating shaft (1-1-1) close to the upper arm II (1-1-4); The working end of the cylinder (4) is connected to the middle part of the arm I (1-1-2); The stopper (3) is in intermittent contact with the upper arm Ⅰ (1-1-2).

3. According to the unwinding automatic splicing device of claim 2, It is characterized in that The spring swing arm assembly (1-2) comprises a spring tail seat (1-2-1), the spring tail seat (1-2-1) is fixed to the corresponding upper arm by a first bolt, one end of a spring (1-2-2) is fixedly connected to one side of the spring tail seat (1-2-1), the other end of the spring (1-2-2) is connected to one end of a screw rod (1-2-3), the other end of the screw rod (1-2-3) is connected to a pressure roller swing arm (1-2-6) via a joint (1-2-4), and the pressure roller swing arm (1-2-6) is connected to the pressure roller swing arm (1-2-7). One end of the rubber roller (1-2-6) close to the joint (1-2-4) is fixed to the corresponding big arm by two second bolts, and the second bolts are respectively sleeved with a wear-resistant sleeve (1-2-5) and a support sleeve (1-2-7), the wear-resistant sleeve (1-2-5) is located on the outside of the pressure roller swing arm (1-2-6), and the support sleeve (1-2-7) is located between the big arm and the pressure roller swing arm (1-2-6), and the two ends of the rubber roller (1-3) are respectively fixed to the two pressure roller swing arms (1-2-6); 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 arranged on the pressure roller swing arm (1-2-6).

4. The automatic unwinding splicing device according to claim 2, It is characterized in that The unwinding turret (5) is axially rotatably arranged on the equipment main bracket, and an unwinding roller is arranged on the unwinding turret (5), and the unwinding roller is arranged in parallel with the rubber roller (1-3).

5. Automatic splicing method of unwinding, It is characterized in that Using the unwinding automatic splicing device as described in any one of claims 1 to 4, the specific steps are as follows: S1. According to the printing process "inside printing" or "surface printing", the upper and lower cutting programs are switched, and the program confirms the initial position of the splicing and cutting component (1); S2, prepare the material rolls to be used for automatic splicing; S3, automatic unwinding and splicing are performed through industrial control PLC control to complete automatic unwinding and splicing.

6. The automatic unwinding splicing method according to claim 5, It is characterized in that The specific method of S1 is: 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 cutting or lower cutting conversion according to the position signal feedback. When the cylinder rod of the cylinder (4) is fully retracted, it is the upper cutting initial position, and when the cylinder rod of the cylinder (4) is fully extended, it is the lower cutting initial position. During the conversion process of upper cutting or lower cutting, the blocker (3) is released, and after the conversion is completed, the blocker (3) is maintained.

7. The automatic unwinding splicing method according to claim 5, It is characterized in that The specific method of S2 is: Attach double-sided tape to the roll to be used, and attach a small flag-like mark at the corresponding position of the double-sided tape to indicate the position of the double-sided tape. The small mark 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.

8. The automatic unwinding splicing method according to claim 5, It is characterized in that The specific method of S3 is: S3.

1. Adjust the unwinding state to the running state; S3.2, adjust the splicing and cutting assembly (1) to rotate to the operating position, align with the blocker (3), and the blocker (3) is maintained. At this time, the cylinder (4) is in a ventilation standby state; S3.3, control the unwinding turret (5) to rotate, and after the end surface of the material roll triggers the first photoelectric sensor (1-9) for upper cutting or the first photoelectric sensor (1-4) for lower cutting, the unwinding turret (5) stops and the material roll is accelerated synchronously; S3.4, when the small flag mark of the material roll rotates and triggers the second photoelectric sensor (1-8) for upper cutting or the second photoelectric sensor (1-5) for lower cutting, the blocker (3) is released, and the cylinder (4) drives the splicing and cutting assembly (1) to instantly complete the splicing and cutting: 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 blocker (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 the cylinder (4) is in the air-cutting and pressure-maintaining positioning state; S3.6, the splicing and cutting assembly (1) returns to the initial mode, the blocker (3) remains in place, and the automatic splicing is completed.

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