Method and device for automatically cutting tire lining layer

Abstract

The invention provides a method and device for automatically cutting a tire lining layer. The method comprises the steps that the specification of a currently produced tire lining layer is obtained, and the specification of a next produced tire lining layer is obtained; judging whether specification alternation of the tire lining layer is carried out at the current moment, and judging whether a first executing mechanism is started to carry out specification adjustment on the tire lining layer according to a judgment result; and the PLC is used for controlling the first executing mechanism to adjust the specification of the tire lining layer, and controlling the second executing mechanism to automatically cut the part, which does not conform to the specification after alternation, of the tire lining layer in the specification alternation process. The problem that at present, an alternating part of the tire lining layer needs to be manually identified and manually cut, and consequently unqualified products flow into the next procedure is solved, accurate removal of the unqualified products during specification alternation of the tire lining layer is achieved, the return rate of the tire lining layer is greatly reduced, and the production efficiency is improved. The intelligent degree, the usability and the reliability of the system are improved to a great extent.

Description

Technical Field

[0001] The invention relates to the technical field of automatic cutting of tire inner liner, and in particular to a method and a device for automatic cutting of tire inner liner. Background Art

[0002] During the construction of the inner liner of a semi-steel radial tire, there is a link that cannot be ignored, that is, when the specifications of the inner liner are alternating, that is, when the size of the inner liner changes, the part with the alternating specifications of the inner liner needs to be removed, because the specifications of the inner liner in the alternating part are inconsistent with the specifications of the inner liner after the alternation, and are unqualified products. Therefore, they need to be removed to prevent unqualified products from flowing into the next process.

[0003] At present, when the specifications of the tire inner liner are alternating, the operator needs to manually use a crayon to mark the material of the alternating part, and the alternating part of the inner liner needs to be cut at the connection point, and the alternating part needs to be cut manually with scissors. However, some problems often arise in actual operation. Due to various uncertain factors at the production site, sometimes the operator may not be able to mark the part in time, or there may be inaccurate cutting. The alternating part of the inner liner specifications is likely to be rolled into the tooling vehicle, resulting in unqualified products flowing into the next process, greatly increasing the quality risk and cost control difficulty of the entire tire inner liner project.

[0004] Therefore, the prior art needs to be further developed. Summary of the invention

[0005] The purpose of the present invention is to overcome the above-mentioned technical deficiencies and provide a method and device for automatically cutting the inner liner of a tire to solve the problem in the prior art that an operator is required to use a crayon to mark the alternating parts of the inner liner and manually use scissors to cut the alternating parts, resulting in inaccurate cutting, which causes defective products to flow into the next process.

[0006] To achieve the above technical objectives, according to a first aspect of the present invention, the present invention provides a method for automatically cutting a tire inner liner, comprising: S100, obtaining the specifications of the inner liner of the tire currently being produced, and obtaining the specifications of the inner liner of the tire to be produced next; S200, determining whether to perform specification alternation of the tire inner liner at the current moment, and determining whether to activate the first actuator to adjust the specification of the tire inner liner according to the determination result; S300, using PLC to control the first actuator to adjust the specifications of the tire inner liner, and control the second actuator to automatically cut the part of the tire inner liner that does not meet the specifications after the specification alternation process.

[0007] Specifically, the specifications of the tire inner liner include the width and thickness of the inner liner.

[0008] Specifically, the S100 includes: Obtain the width and thickness of the inner liner of the tire currently being produced from the MES system, as well as the width and thickness of the inner liner of the tire to be produced next.

[0009] Specifically, determining whether to start the first actuator to adjust the specifications of the tire inner liner according to the judgment result includes: If the specification of the tire inner liner is being changed at the current moment, it is determined that the first actuator is started to adjust the specification of the tire inner liner; If the specification of the tire inner liner is not being changed at the current moment, it is determined that the first actuator is not activated to adjust the specification of the tire inner liner.

[0010] Specifically, the first actuator includes a trimming knife and a calendering roller; The trimming cutter is used to adjust the width of the tire inner liner, and the calendering roller is used to adjust the thickness of the tire inner liner.

[0011] Specifically, the starting of the first actuator to adjust the specifications of the tire inner liner includes: The trimming cutter blade spacing parameter is obtained according to the width of the next tire inner liner to be produced, and the calender roller pitch parameter is obtained according to the thickness of the next tire inner liner to be produced, and the trimming cutter blade spacing parameter and the calender roller pitch parameter are transmitted to the trimming cutter and the calender roller to adjust the width and thickness of the tire inner liner.

[0012] Specifically, the method of using PLC to control the first actuator to adjust the specifications of the tire inner liner includes: When the PLC receives the instruction to change the specifications of the tire inner liner from the MES system, it controls the trimming knife and the calendering roller to start adjusting the width and thickness of the tire inner liner according to the knife spacing parameter and the roller spacing parameter.

[0013] Specifically, the second actuator includes a rotary cutter, and a meter is provided on the rotary cutter. The meter is used to calculate the distance from the rotary cutter to the first actuator, and to monitor in real time the distance of the tire inner liner currently passing through the rotary cutter.

[0014] Specifically, controlling the second actuator to automatically cut the portion of the lining layer that does not meet the specifications after the specification alternation process includes: The distance from the rotary cutter to the first actuator is recorded as the first distance. After the first actuator adjusts the specifications of the tire inner liner, the meter monitors the distance of the tire inner liner currently passing through the rotary cutter in real time. When the distance of the tire inner liner passing through the rotary cutter reaches the first distance, the PLC controls the rotary cutter to perform the first cutting. When the first actuator completes specification adjustment of the tire inner liner, the PLC controls the meter to calculate the distance of the tire inner liner passing through the rotary cutter within the first preset time after the specification adjustment is completed, which is recorded as the second distance. When the distance of the tire inner liner passing through the rotary cutter reaches the second distance, the PLC controls the rotary cutter to perform a second cut.

[0015] According to a second aspect of the present invention, there is provided a device for automatically cutting a tire inner liner, comprising: Acquisition module: used to obtain the specifications of the inner liner of the tire currently being produced, and to obtain the specifications of the inner liner of the tire to be produced next; Control module: including PLC, used to determine whether to perform specification alternation of the tire inner liner at the current moment, and determine whether to start the first actuator to adjust the specification of the tire inner liner according to the determination result; and used to control the first actuator to adjust the specification of the tire inner liner, and control the second actuator to automatically cut the part of the tire inner liner that does not meet the specifications after the alternation during the specification alternation process; Execution module: includes a first actuator and a second actuator, the first actuator includes a trimming cutter and a calendering roller, the first actuator is used to adjust the specifications of the tire inner liner, the second actuator includes a rotary cutter, the second actuator is used to automatically cut the part of the tire inner liner that does not meet the specifications after the alternation during the specification alternation process.

[0016] Beneficial effects: The present invention utilizes a PLC to control a rotary cutter to automatically cut the portion of the inner liner that does not meet the specifications after the alternation during the specification alternation process, thereby solving the problem in the prior art that an operator needs to use a crayon to mark the alternating portion of the inner liner and manually use scissors to cut the alternating portion, resulting in inaccurate cutting, which causes unqualified products to flow into the next process. The present invention achieves accurate removal of unqualified products when the specifications of the tire inner liner are alternating, eliminates the phenomenon of unqualified products being involved in the next process, reduces labor intensity, greatly reduces the return rate of the tire inner liner, realizes intelligent production of the tire inner liner, greatly improves the accuracy of material identification of the alternating portion of the tire inner liner, and greatly improves the intelligence, usability and reliability of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1is a flow chart of a method for automatically cutting a tire inner liner provided in a specific embodiment of the present invention; Figure 2 It is a schematic diagram of the composition of the device for automatically cutting the tire inner liner provided in a specific embodiment of the present invention. DETAILED DESCRIPTION In order to enable those skilled in the art to better understand the technical solution of the present invention, the technical solution of the present invention is clearly and completely described below in conjunction with the accompanying drawings of the present invention. Based on the embodiments in this application, other similar embodiments obtained by ordinary technicians in this field without making creative work should all fall within the scope of protection of this application. In addition, the directional words mentioned in the following embodiments, such as "up", "down", "left", "right", etc., are only reference to the directions of the accompanying drawings. Therefore, the directional words used are used to illustrate rather than limit the invention.

[0018] The present invention will be further described below in conjunction with the accompanying drawings and preferred embodiments.

[0019] See also Figure 1 This embodiment provides a method for automatically cutting a tire inner liner, comprising: S100, obtaining the specifications of the inner liner of the tire currently being produced, and obtaining the specifications of the inner liner of the tire to be produced next; It should be noted that a first preset time is preset before step S100. It is understandable that the present invention does not limit the specific value of the first preset time, as long as the method for automatic cutting of tire inner liner proposed by the present invention can be applied.

[0020] Preferably, the present invention sets the first preset time to 15s. The above setting can ensure that the specifications of the tire inner liner layer when the rotary cutter performs the second cutting meet the requirements after the alternation, thereby avoiding the flow of unqualified products into the next process, and greatly improving the availability and reliability of the present invention.

[0021] Specifically, the specifications of the tire inner liner include the width and thickness of the inner liner.

[0022] Specifically, the S100 includes: Obtain the width and thickness of the inner liner of the tire currently being produced from the MES system, as well as the width and thickness of the inner liner of the tire to be produced next.

[0023] S200, determining whether to perform specification alternation of the tire inner liner at the current moment, and determining whether to activate the first actuator to adjust the specification of the tire inner liner according to the determination result.

[0024] Specifically, determining whether to start the first actuator to adjust the specifications of the tire inner liner according to the judgment result includes: If the specification of the tire inner liner is being changed at the current moment, it is determined that the first actuator is started to adjust the specification of the tire inner liner; If the specification of the tire inner liner is not being changed at the current moment, it is determined that the first actuator is not activated to adjust the specification of the tire inner liner.

[0025] It can be understood that by judging whether the specification is alternating at the current moment to decide whether to start the actuator, unnecessary adjustment operations are avoided, which reduces the invalid start-up of the equipment, reduces equipment loss and energy consumption, and saves costs. At the same time, accurate adjustment judgment ensures that the specifications of the tire inner liner meet the requirements, improves product quality consistency, and makes the production process more stable and orderly, reducing the time waste caused by misoperation or unnecessary adjustments, further improving the overall production efficiency, and greatly improving the intelligence level of the present invention.

[0026] Specifically, the first actuator includes a trimming knife and a calendering roller; The trimming cutter is used to adjust the width of the tire inner liner, and the calendering roller is used to adjust the thickness of the tire inner liner.

[0027] Specifically, the starting of the first actuator to adjust the specifications of the tire inner liner includes: The trimming cutter blade spacing parameter is obtained according to the width of the next tire inner liner to be produced, and the calender roller pitch parameter is obtained according to the thickness of the next tire inner liner to be produced, and the trimming cutter blade spacing parameter and the calender roller pitch parameter are transmitted to the trimming cutter and the calender roller to adjust the width and thickness of the tire inner liner.

[0028] In some specific embodiments, the blade spacing parameter of the trimming cutter is obtained according to the width of the inner liner of the next tire to be produced. The specific process may include: 1. Obtain a data set of the blade spacing setting value of the trimming knife, and obtain the actual value of the width of the lining layer corresponding to each blade spacing setting value; the lining layer includes an airtight layer and a transition layer, the blade spacing setting value includes a blade spacing setting value of the airtight layer and a blade spacing setting value of the transition layer, and the actual value of the width of the lining layer includes an actual value of the width of the airtight layer and an actual value of the width of the transition layer; 2. Using the data set of the tool spacing setting value and its corresponding actual value of the width of the lining layer, a fitting formula between the tool spacing setting value and the actual value of the width of the lining layer is established.

[0029] The fitting formula between the set value of the blade spacing of the airtight layer and the actual value of the width of the airtight layer is as follows: The actual value of the width of the airtight layer = the set value of the blade spacing of the airtight layer * the first coefficient + the first constant coefficient; The fitting formula between the set value of the tool spacing of the transition layer and the actual value of the width of the transition layer is as follows: The actual value of the width of the transition layer = the tool spacing setting value of the transition layer * the second coefficient + the second constant coefficient; The first coefficient and the first constant coefficient are fixed values ​​obtained according to a fitting formula between the obtained blade spacing setting value of the airtight layer and the corresponding actual value of the width of the airtight layer; The second coefficient and the second constant coefficient are fixed values ​​obtained according to a fitting formula between the acquired tool spacing setting value of the transition layer and the corresponding actual value of the width of the transition layer.

[0030] A linear regression analysis method can be used to calculate the first coefficient, the first constant coefficient, the second coefficient, and the second constant coefficient based on the collected data set through algorithms such as the least squares method or the gradient descent method. The goodness of fit can be evaluated by calculating the coefficient of determination. The closer the coefficient of determination is to 1, the better the fit.

[0031] 3. Obtain the standard value of the width of the lining layer required for production, use the above fitting formula to calculate the standard value of the blade spacing corresponding to the standard value of the width, and transmit the standard value of the blade spacing to the spacing adjustment device.

[0032] According to the first coefficient and the first constant coefficient, the relationship between the standard value of the width of the airtight layer and the standard value of the knife distance of the airtight layer corresponding to it is obtained as follows: Standard value of width of airtight layer = standard value of knife distance of airtight layer * first coefficient + first constant coefficient; Obtain the standard value of the width of the airtight layer required for production from the construction table in the instruction manual, substitute the standard value of the width of the airtight layer into the relationship between the standard value of the width of the airtight layer and its corresponding standard value of the knife spacing of the airtight layer, and calculate the standard value of the knife spacing of the airtight layer.

[0033] According to the second coefficient and the second constant coefficient, the relationship between the standard value of the width of the transition layer and the standard value of the tool spacing of the corresponding transition layer is as follows: The standard value of the width of the transition layer = the standard value of the tool distance of the transition layer * the second coefficient + the second constant coefficient; Obtain the standard value of the width of the transition layer required for production from the construction table of the instruction book, substitute the standard value of the width of the transition layer into the relationship between the standard value of the width of the transition layer and its corresponding standard value of the knife spacing of the transition layer, and calculate the standard value of the knife spacing of the transition layer. The construction table of the instruction book is used to provide the width dimension standard of the airtight layer and the transition layer. The width standard can be directly extracted through information technology, which is usually based on product specifications and production requirements.

[0034] Write the relationship between the standard value of the width of the airtight layer and the standard value of the knife spacing of the airtight layer corresponding thereto, and the relationship between the standard value of the width of the transition layer and the standard value of the knife spacing of the transition layer corresponding thereto into the PLC respectively; Obtain the standard width value of the airtight layer and the standard width value of the transition layer required for production in real time from the construction table of the instruction book, and upload the standard width value of the airtight layer and the standard width value of the transition layer to the MES system; Add the input items of the first coefficient, the second coefficient, the first constant coefficient and the second constant coefficient in the MES system; After obtaining the standard value of the width of the airtight layer, the standard value of the width of the transition layer, the first coefficient, the second coefficient, the first constant coefficient, and the second constant coefficient from the MES system, the PLC calculates the standard value of the knife distance of the airtight layer and the standard value of the knife distance of the transition layer, respectively, and transmits the standard value of the knife distance to the distance adjustment device.

[0035] It is understandable that by integrating PLC and MES system, dynamic calculation and real-time adjustment of the standard value of tool spacing can be realized to ensure production efficiency and product quality. The specific steps are as follows: (1) Write the formula into PLC: Write the relationship between the standard value of the width of the airtight layer and the transition layer and the standard value of the blade spacing into PLC respectively; (2) Obtaining standard width values ​​in real time: Receive standard width values ​​of the airtight layer and transition layer updated from the prescription book in real time through the MES system; (3) Adding input items to the MES system: Adding input items to the MES system allows operators or the system to automatically input the first coefficient, the second coefficient, the first constant coefficient, and the second constant coefficient to ensure the accuracy and real-time performance of the formula parameters; (3) PLC obtains parameters from the MES system: PLC obtains the standard value of the width of the airtight layer, the standard value of the width of the transition layer, the first coefficient, the second coefficient, the first constant coefficient and the second constant coefficient from the MES system in real time; (4) Calculating the standard value of the blade spacing: using the obtained standard value of the width of the airtight layer, the standard value of the width of the transition layer, and the first coefficient, the second coefficient, the first constant coefficient, and the second constant coefficient, the PLC calculates the standard value of the blade spacing corresponding to the currently obtained standard value of the width of the airtight layer and the standard value of the width of the transition layer; (5) Transmitting the standard value of the blade distance to the distance adjustment device: The calculated standard value of the blade distance is transmitted to the trimming cutter in real time. The trimming cutter adjusts the blade distance according to the received instructions to ensure that the width of the processed airtight layer and transition layer meets the standard.

[0036] Through the above steps, the integration of PLC and MES system realizes the real-time update and automatic adjustment of trimming knife distance parameters, which greatly improves production flexibility and efficiency and greatly improves the stability of product quality.

[0037] In some specific embodiments, the calculation process of the roller distance parameter may be the same as the calculation process of the knife distance parameter. The calculation process of the roller distance parameter is described below by using a specific example: 1. Obtain a data set of roller pitch setting values ​​of the calender rollers, and obtain an actual value of the thickness of the airtight layer and an actual value of the thickness of the transition layer corresponding to each roller pitch setting value; 2. Fit the set value of the airtight layer roller distance with the actual value of the airtight layer thickness, and the specific formula is as follows: The actual value of the thickness of the airtight layer = the roller distance setting value of the airtight layer * the third coefficient + the third constant coefficient; 3. Fit the set value of the transition layer roller spacing with the actual value of the transition layer thickness, and obtain the specific formula: The actual value of the thickness of the transition layer = the roller spacing setting value of the transition layer * the fourth coefficient + the fourth constant coefficient; 4. Calculate the third coefficient, the third constant coefficient, the fourth coefficient, and the fourth constant coefficient through the fitting formula in the above steps 2 and 3, and write the roller spacing calculation formula into the PLC: (transition layer / airtight layer) standard thickness = roller spacing setting value × coefficient + constant coefficient; 5. Extract thickness standards from prescription books; 6. Add the input items of airtight layer roller pitch, transition layer roller pitch, coefficient (third coefficient, fourth coefficient), and constant coefficient (third constant coefficient, fourth constant coefficient) in the MES process parameter maintenance; 7. PLC obtains parameters from the MES system; 8. Calculate the standard value of the inner lining roller distance; 9. The standard value of the inner lining layer roller distance is transmitted to the calendering roller.

[0038] S300, using PLC to control the first actuator to adjust the specifications of the tire inner liner, and control the second actuator to automatically cut the part of the tire inner liner that does not meet the specifications after the specification alternation process.

[0039] Specifically, the method of using PLC to control the first actuator to adjust the specifications of the tire inner liner includes: When the PLC receives the instruction to change the specifications of the tire inner liner from the MES system, it controls the trimming knife and the calendering roller to start adjusting the width and thickness of the tire inner liner according to the knife spacing parameter and the roller spacing parameter.

[0040] Specifically, the second actuator includes a rotary cutter, and a meter is provided on the rotary cutter. The meter is used to calculate the distance from the rotary cutter to the first actuator, and to monitor in real time the distance of the tire inner liner currently passing through the rotary cutter.

[0041] Specifically, controlling the second actuator to automatically cut the portion of the lining layer that does not meet the specifications after the specification alternation process includes: The distance from the rotary cutter to the first actuator is recorded as the first distance. After the first actuator adjusts the specifications of the tire inner liner, the meter monitors the distance of the tire inner liner currently passing through the rotary cutter in real time. When the distance of the tire inner liner passing through the rotary cutter reaches the first distance, the PLC controls the rotary cutter to perform the first cutting. When the first actuator completes specification adjustment of the tire inner liner, the PLC controls the meter to calculate the distance of the tire inner liner passing through the rotary cutter within the first preset time after the specification adjustment is completed, which is recorded as the second distance. When the distance of the tire inner liner passing through the rotary cutter reaches the second distance, the PLC controls the rotary cutter to perform a second cut.

[0042] Furthermore, by using a meter to calculate the distance from the rotary cutter to the first actuator, the portion of the inner liner that does not meet the specifications after the alternation can be accurately determined during the specification alternation process, that is, the position that needs to be cut. During the specification alternation process of the tire inner liner, accurate distance measurement ensures that only the portion that does not meet the specifications after the alternation is cut, effectively ensuring the accuracy of the specifications of the tire inner liner after the alternation. According to the data monitored in real time by the meter, the PLC controls the rotary cutter to perform two cuts, and performs the cutting operation at the appropriate time, which not only avoids the specification mismatch caused by premature cutting, but also performs the second cutting after the first preset time after the specification adjustment is completed, and also prevents the production efficiency from being affected by cutting too late. In this embodiment, the first preset time can be set to 15s, which can ensure that the tire inner liner specifications after two cuts meet the specifications after the alternation, thereby improving the accuracy of the inner liner specification control and the stability of the production process during the entire tire production process.

[0043] The working principle of the present invention is described below by means of specific examples: The present invention is applicable to the inner liner engineering of semi-steel radial tires, and is used for accurately removing components with unqualified sizes generated by the inner liner calender when the specifications are alternated; in the current inner liner engineering, when the specifications are alternated, the materials of the alternate parts need to be manually marked with crayons, and the materials are cut and manually removed at the receiving point. Sometimes, due to untimely marking or untimely cutting, the alternate parts are rolled into the tooling vehicle, resulting in unqualified products flowing into the next process.

[0044] Because when the tire inner liner needs to be changed, the width and thickness of the inner liner will change, and the trimming cutter and calender roller move slowly during the production process. At this time, the linkage line is still running, so there will be a section of the tire inner liner that is unqualified, that is, the inner liner size that does not meet the specifications that need to be replaced, that is, the length from the beginning to the end of the trimming cutter action needs to be removed. The specific steps are as follows; Step 1: When switching specifications, click on the plan execution on the industrial computer. The knife distance and roller distance parameters set in MES are transmitted to the lower computer, and the extruder screw speed is transmitted to the lower computer. In this example, the airtight layer uses a φ150 extruder and the transition layer uses a φ200 extruder. The formula for calculating the screw speed of the airtight layer extruder is: (Width of airtight layer + width of rubber edge) × thickness of airtight layer × density of rubber compound of airtight layer × linkage line speed = φ150 glue discharge amount × screw speed of airtight layer extruder; The calculation formula for the screw speed of the transition layer extruder is: (Transition layer width + rubber edge width) × transition layer thickness × transition layer rubber density × linkage line speed = φ200 glue discharge amount × transition layer extruder screw speed; Take the A specification within a company as an example: Airtight layer width: 405mm; Transition layer width: 375mm; Airtight layer thickness: 0.8mm; Transition layer thickness: 0.7mm; Density of airtight layer rubber: 1.155g / ; Transition layer rubber density: 1.123g / ; Linkage line speed: 27.7m / min; Φ150 extruder glue discharge: 38.729kg / h / rpm; Φ200 extruder glue discharge: 92.6kg / h / rpm; Substituting the specific values ​​of the above parameters, we can get: 23.99rpm; 8.11rpm; Step 2: At the same time, the trimming knife and the calendering roller begin to adjust the size of the tire inner liner according to the set knife spacing parameters and roller spacing parameters respectively, and the screw speeds of the airtight layer and transition layer extruders change at the same time; Step 3: The meter counter calculates the distance from the rotary cutter to the trimming cutter and the calender roller as 21 meters. The PLC sends a signal to the rotary cutter at the back to perform the first cutting. Step 4: When the trimming cutter and calender roller stop moving for 15 seconds, that is, when the meter monitors that the distance of the tire inner liner passing through the rotary cutter reaches the distance that should be passed in 15 seconds, the PLC transmits a signal to the rotary cutter behind to perform the second cutting.

[0045] It is understandable that before the lining layer can achieve automatic rejection of alternating specifications, manual intervention is required to manually mark the alternating parts of specifications, and manually reject the alternating parts of materials in the receiving section. After the automatic rejection of alternating specifications is achieved, the involvement of unqualified products is eliminated, the labor intensity is reduced, and the identification of the alternating parts of specifications is more accurate, which reduces the return rate of the lining.

[0046] It should be noted here that the present invention uses PLC to control a rotary cutter to automatically cut the part of the inner liner that does not meet the specifications after the alternation during the specification alternation process. This solves the problem in the prior art that the operator needs to use a crayon to mark the alternating part of the inner liner and manually use scissors to cut the alternating part, which may result in inaccurate cutting and thus cause unqualified products to flow into the next process. This achieves accurate removal of unqualified products when the specifications of the tire inner liner are alternating, eliminates the phenomenon of unqualified products being involved in the next process, reduces labor intensity, greatly reduces the return rate of the tire inner liner, realizes intelligent production of the tire inner liner, greatly improves the accuracy of material identification of the alternating part of the tire inner liner, and greatly improves the intelligence, usability and reliability of the present invention.

[0047] See also Figure 2 This embodiment provides a device for automatically cutting a tire inner liner, the device comprising: Acquisition module 100: used to acquire the specification of the inner liner of the tire currently being produced, and acquire the specification of the inner liner of the tire to be produced next; Control module 200: includes a PLC, which is used to determine whether to perform specification alternation of the tire inner liner at the current moment, and determine whether to start the first actuator to adjust the specification of the tire inner liner according to the determination result; and is used to control the first actuator to adjust the specification of the tire inner liner, and control the second actuator to automatically cut the part of the tire inner liner that does not meet the specifications after the alternation during the specification alternation process; Execution module 300: includes a first actuator and a second actuator, wherein the first actuator includes a trimming cutter and a calendering roller, and the first actuator is used to adjust the specifications of the tire inner liner, and the second actuator includes a rotary cutter, and the second actuator is used to automatically cut the part of the tire inner liner that does not meet the specifications after the specification alternation process.

[0048] It should be noted here that the present invention uses PLC to control a rotary cutter to automatically cut the part of the inner liner that does not meet the specifications after the alternation during the specification alternation process. This solves the problem in the prior art that the operator needs to use a crayon to mark the alternating part of the inner liner and manually use scissors to cut the alternating part, which may result in inaccurate cutting and thus cause unqualified products to flow into the next process. This achieves accurate removal of unqualified products when the specifications of the tire inner liner are alternating, eliminates the phenomenon of unqualified products being involved in the next process, reduces labor intensity, greatly reduces the return rate of the tire inner liner, realizes intelligent production of the tire inner liner, greatly improves the accuracy of material identification of the alternating part of the tire inner liner, and greatly improves the intelligence, usability and reliability of the present invention.

[0049] The various technical features described above can be combined arbitrarily. Although all possible combinations of these technical features are not described, any combination of these technical features should be considered to be covered by this specification as long as there is no contradiction in such combination.

[0050] The specific implementation of the present invention described above does not constitute a limitation on the protection scope of the present invention. Any other corresponding changes and modifications made based on the technical concept of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. A method for automatically cutting a tire inner liner, characterized in that: include: S100, obtaining the specifications of the inner liner of the tire currently being produced, and obtaining the specifications of the inner liner of the tire to be produced next; S200, determining whether to perform specification alternation of the tire inner liner at the current moment, and determining whether to activate the first actuator to adjust the specification of the tire inner liner according to the determination result; S300, using PLC to control the first actuator to adjust the specifications of the tire inner liner, and control the second actuator to automatically cut the part of the tire inner liner that does not meet the specifications after the specification alternation process.

2. The method for automatically cutting the tire inner liner according to claim 1, characterized in that: The specifications of the tire inner liner include the width and thickness of the inner liner.

3. The method for automatically cutting the tire inner liner according to claim 2, characterized in that: The S100 includes: Obtain the width and thickness of the inner liner of the tire currently being produced from the MES system, as well as the width and thickness of the inner liner of the tire to be produced next.

4. The method for automatically cutting the tire inner liner according to claim 3, characterized in that: The step of determining whether to start the first actuator to adjust the specifications of the tire inner liner according to the judgment result includes: If the specification of the tire inner liner is being changed at the current moment, it is determined that the first actuator is started to adjust the specification of the tire inner liner; If the specification of the tire inner liner is not being changed at the current moment, it is determined that the first actuator is not activated to adjust the specification of the tire inner liner.

5. The method for automatically cutting the tire inner liner according to claim 4, characterized in that: The first actuator includes a trimming knife and a calendering roller; The trimming cutter is used to adjust the width of the tire inner liner, and the calendering roller is used to adjust the thickness of the tire inner liner.

6. The method for automatically cutting the tire inner liner according to claim 5, characterized in that: The step of starting the first actuator to adjust the specifications of the tire inner liner includes: The trimming cutter blade spacing parameter is obtained according to the width of the next tire inner liner to be produced, and the calender roller pitch parameter is obtained according to the thickness of the next tire inner liner to be produced, and the trimming cutter blade spacing parameter and the calender roller pitch parameter are transmitted to the trimming cutter and the calender roller to adjust the width and thickness of the tire inner liner.

7. The method for automatically cutting the tire inner liner according to claim 6, characterized in that: The method of using PLC to control the first actuator to adjust the specifications of the tire inner liner includes: When the PLC receives the instruction to change the specifications of the tire inner liner from the MES system, it controls the trimming knife and the calendering roller to start adjusting the width and thickness of the tire inner liner according to the knife spacing parameter and the roller spacing parameter.

8. The method for automatically cutting the tire inner liner according to claim 1, characterized in that: The second actuator comprises a rotary cutter, on which a meter is arranged, and the meter is used to calculate the distance from the rotary cutter to the first actuator, and to monitor in real time the distance of the tire inner liner currently passing through the rotary cutter.

9. The method for automatically cutting the tire inner liner according to claim 8, characterized in that: Control the second actuator to automatically cut the part of the lining layer that does not meet the specifications after the specification change during the specification change process, including: The distance from the rotary cutter to the first actuator is recorded as the first distance. After the first actuator adjusts the specifications of the tire inner liner, the meter monitors the distance of the tire inner liner currently passing through the rotary cutter in real time. When the distance of the tire inner liner passing through the rotary cutter reaches the first distance, the PLC controls the rotary cutter to perform the first cutting. When the first actuator completes specification adjustment of the tire inner liner, the PLC controls the meter to calculate the distance of the tire inner liner passing through the rotary cutter within the first preset time after the specification adjustment is completed, which is recorded as the second distance. When the distance of the tire inner liner passing through the rotary cutter reaches the second distance, the PLC controls the rotary cutter to perform a second cut.

10. A device for automatically cutting tire inner liner, characterized in that: include: An acquisition module (100): used to acquire the specifications of the inner liner of the tire currently being produced, and to acquire the specifications of the inner liner of the tire to be produced next; A control module (200): comprising a PLC, used to determine whether to perform specification alternation of the tire inner liner at the current moment, and to determine whether to activate a first actuator to adjust the specification of the tire inner liner according to the determination result; and used to control the first actuator to adjust the specifications of the tire inner liner, and control the second actuator to automatically cut the part of the tire inner liner that does not meet the specifications after the specification alternation process; An execution module (300): comprising a first execution mechanism and a second execution mechanism, wherein the first execution mechanism comprises a trimming cutter and a calendering roller, and the first execution mechanism is used to adjust the specifications of the tire inner liner, and the second execution mechanism comprises a rotary cutter, and the second execution mechanism is used to automatically cut the portion of the tire inner liner that does not meet the specifications after the specification alternation process.

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