Puncture heating device on cord fabric layer

Abstract

According to the technical scheme, the technical problems that a traditional heating roller is large in thermal inertia, low in response speed, large in high-precision temperature control difficulty, low in thermal efficiency and large in energy consumption are well solved, the device comprises a mounting support, and a main air cylinder is mounted at the top of the mounting support; the telescopic end of the main air cylinder penetrates through the installation support and is movably connected with the installation support, the telescopic end of the main air cylinder extends into the installation support to be provided with a floating connector, a movable rack assembly is arranged in the installation support, and the top of the movable rack assembly is fixedly connected with the floating connector. The two mounting plates are mounted on the side wall of the movable rack assembly, the thorn wheel assembly is arranged between the two mounting plates, and the electromagnetic heating assembly is arranged between the thorn wheel assembly and the movable rack assembly, so that the whole rotation of the roller body and the pricking needles can be realized, and meanwhile, the pricking needles are uniformly heated by the profiling electromagnetic heating coil; and the heating efficiency can be effectively improved.

Description

Technical Field

[0001] The invention relates to the technical field of tire production, in particular to a device for heating puncture holes on a cord layer. Background Art

[0002] The tire ply rubber is the skeleton of the tire, which is made of rubber and cord. It bears most of the load acting on the tire. Because it is under periodic flexural deformation, it needs to have fatigue resistance and aging resistance. During production, multiple layers of rubber are compounded. If bubbles are generated between the rubber during the compounding process, especially at the junction of the ply and the tread, it is easy to produce air defects during the subsequent vulcanization process, which seriously affects the performance of the tire.

[0003] In order to facilitate the timely discharge of air, existing tire molding equipment is generally equipped with a special puncturing device, which drives out the air by evenly puncturing holes in the rubber and extruding it during compounding. Since the rubber of the cord layer is thicker and has higher toughness, in order to improve the puncturing efficiency, the existing puncturing device is generally equipped with a heating device, which can effectively puncture the rubber by raising the temperature of the puncturing roller needle to a certain temperature.

[0004] However, some existing licker-in roller heating devices, whether they adopt electric heating tube heating or electromagnetic induction heating, all have the heating element built into the licker-in roller. Therefore, the heating device cannot directly act on the terminal needles, and the increase and decrease of temperature need to be transmitted through the roller body, resulting in large thermal inertia, slow thermal response speed, high difficulty in temperature control, low thermal efficiency, high energy consumption and other problems, which make it difficult to meet the precise temperature control requirements of the needles. In addition, its power supply form also causes a high failure rate.

[0005] Therefore, a kind of puncture heating device on the cord layer is designed to change the above-mentioned technical defects. Summary of the invention

[0006] (1) Technical issues to be solved

[0007] In view of the shortcomings of the prior art, the purpose of the present invention is to provide a heating device for puncturing holes on a cord layer, which effectively solves the technical problems of large thermal inertia of the heating roller, slow thermal response speed, high difficulty in temperature control, low thermal efficiency and high energy consumption.

[0008] (2) Technical solution

[0009] In order to solve the above technical problems, the present invention provides a puncture heating device on a cord layer, comprising a mounting bracket, a main cylinder is installed on the top of the mounting bracket, the telescopic end of the main cylinder passes through the mounting bracket and is movably connected to the mounting bracket, the telescopic end of the main cylinder extends to the mounting bracket and a floating joint is installed in the mounting bracket, a movable frame assembly is arranged in the mounting bracket, the top of the movable frame assembly is fixedly connected to the floating joint, the movable frame assembly comprises a mounting plate, two mounting plates are provided and are installed on the side wall of the movable frame assembly, a lance assembly is arranged between the two mounting plates, an electromagnetic heating assembly is arranged between the lance assembly and the movable frame assembly, a fixed frame is installed on one side of the mounting bracket, and a rotary power assembly is arranged on the top of the movable frame assembly.

[0010] Furthermore, the thorn wheel assembly includes a roller body, the side wall of the roller body is equipped with evenly distributed thorn needles, the side wall of the roller body is symmetrically fixedly connected to a rotating shaft, the side wall of the rotating shaft is equipped with a bearing seat, and the bearing seat is fixedly connected to the inner wall of one side of the mounting plate.

[0011] Furthermore, the electromagnetic heating assembly includes a heating hood, and L-shaped brackets are respectively installed on the outer walls of both sides of the heating hood. The top of the L-shaped bracket is fixedly connected to the bottom of the mounting plate, and a contoured electromagnetic heating coil is installed at the bottom of the heating hood.

[0012] Furthermore, the rotary power assembly includes a reduction motor mounting bracket, the reduction motor mounting bracket is L-shaped, one side is hollow, the bottom of the reduction motor mounting bracket is fixedly connected to the top of the movable frame assembly, a reduction motor is installed on one side of the reduction motor mounting bracket, a transmission shaft bracket is installed on the top of the mounting plate, and two transmission shaft brackets are provided, bearings are respectively installed on the two transmission shaft brackets, a transmission shaft is installed between the two bearings, an overrunning clutch is installed on the transmission shaft, an upper synchronous pulley is installed on the side wall of the overrunning clutch, one end of the transmission shaft in the bearing passes through the bearing and extends to the outside of the transmission shaft bracket with a coupling installed, the output end of the reduction motor passes through the reduction motor mounting bracket and is fixedly connected to the coupling, a lower synchronous pulley is installed on one of the side walls of the rotating shaft, and a synchronous belt is installed between the lower synchronous pulley and the upper synchronous pulley.

[0013] Furthermore, an infrared imaging temperature sensor is installed between the front walls of the two mounting plates, and the infrared imaging temperature sensor is located at the front side of the pricking needle.

[0014] (3) Beneficial effects

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] On the one hand, the present invention directly heats the terminal needles through an external heating device, which has small thermal inertia, fast temperature adjustment response, precise temperature control, and abandons the lengthy heat conduction chain, with high heating efficiency and small heat loss. On the other hand, the heating element is separated from the rotating structure, and the follow-up rotation and active rotation states can be flexibly switched to meet the production line working or standby requirements, ensuring that the needles are heated evenly and effectively reducing the failure rate of the power supply structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall three-dimensional structure of a puncture heating device on a cord layer of the present invention;

[0018] Figure 2 It is a partial three-dimensional structural schematic diagram of a puncture heating device on a cord layer of the present invention;

[0019] Figure 3 It is a schematic diagram of the side view of the structure of a thorn wheel assembly in a puncture hole heating device on a cord layer of the present invention;

[0020] Figure 4 It is a bottom view structural schematic diagram of a puncture and heating device on a cord layer of the present invention;

[0021] Figure 5 The present invention is a schematic cross-sectional view of an overrunning clutch in a heating device for puncturing holes on a cord layer.

[0022] Description of the numbers in the figure:

[0023] 1. Mounting bracket; 2. Movable frame assembly; 21. Mounting plate; 3. Spike assembly; 31. Spike needle; 32. Roller body; 33. Bearing seat; 34. Rotating shaft; 4. Electromagnetic heating assembly; 41. Heating cover; 42. Contour electromagnetic heating coil; 43. L-shaped bracket; 5. Fixed frame; 6. Rotating power assembly; 61. Speed ​​reduction motor; 62. Upper synchronous pulley; 63. Synchronous belt; 64. Lower synchronous pulley; 65. Overrunning clutch; 66. Coupling; 67. Speed ​​reduction motor mounting bracket; 68. Bearing; 69. Drive shaft bracket; 7. Master cylinder; 8. Floating joint. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0025] In an embodiment of the present invention, a heating device for puncturing a cord layer is provided, and its structural schematic diagram is shown as follows: Figure 1-Figure 5As shown, it includes a mounting bracket 1, a main cylinder 7 is installed on the top of the mounting bracket 1, the telescopic end of the main cylinder 7 passes through the mounting bracket 1 and is movably connected to the mounting bracket 1, the telescopic end of the main cylinder 7 extends to the mounting bracket 1 and a floating joint 8 is installed therein, a movable frame assembly 2 is arranged in the mounting bracket 1, the top of the movable frame assembly 2 is fixedly connected to the floating joint 8, the movable frame assembly 2 includes a mounting plate 21, two mounting plates 21 are provided and are installed on the side wall of the movable frame assembly 2, a lance assembly 3 is arranged between the two mounting plates 21, an electromagnetic heating assembly 4 is arranged between the lance assembly 3 and the movable frame assembly 2, a fixed frame 5 is installed on one side of the mounting bracket 1, and a rotary power assembly 6 is arranged on the top of the movable frame assembly 2.

[0026] This technical solution changes the heating form, abandons the traditional heat conduction heating method, reduces thermal inertia, improves thermal efficiency, adopts an external electromagnetic induction heating structure to replace the original built-in heating structure, directly heats the needles 31 on the surface of the roller body 32, abandons the lengthy heat conduction chain, ensures that the needles 31 heat evenly in the length direction, and the temperature fluctuations in the center and both ends of the roller body 32 are small.

[0027] like Figure 1 and Figure 2 As shown, the thorn wheel assembly 3 includes a roller body 32, on the side wall of which evenly distributed thorn needles 31 are installed, on the side wall of the roller body 32 a rotating shaft 34 is symmetrically fixedly connected, on the side wall of the rotating shaft 34 a bearing seat 33 is installed, and the bearing seat 33 is fixedly connected to the inner wall of one side of the mounting plate 21.

[0028] like Figure 4 As shown, the electromagnetic heating assembly 4 includes a heating cover 41, and L-shaped brackets 43 are respectively installed on the outer walls of both sides of the heating cover 41. The top of the L-shaped bracket 43 is fixedly connected to the bottom of the mounting plate 21, and a contoured electromagnetic heating coil 42 is installed at the bottom of the heating cover 41.

[0029] like Figure 2 and Figure 3As shown, the rotary power assembly 6 includes a reduction motor mounting bracket 67, which is L-shaped and hollow on one side. The bottom of the reduction motor mounting bracket 67 is fixedly connected to the top of the movable frame assembly 2, a reduction motor 61 is installed on one side of the reduction motor mounting bracket 67, a transmission shaft bracket 69 is installed on the top of the mounting plate 21, and two transmission shaft brackets 69 are provided. Bearings 68 are respectively installed on the two transmission shaft brackets 69, a transmission shaft is installed between the two bearings 68, an overrunning clutch 65 is installed on the transmission shaft, an upper synchronous pulley 62 is installed on the side wall of the overrunning clutch 65, one end of the transmission shaft in the bearing 68 passes through the bearing 68 and extends to the outer side of the transmission shaft bracket 69 with a coupling 66 installed, the output end of the reduction motor 61 passes through the reduction motor mounting bracket 67 and is fixedly connected to the coupling 66, a lower synchronous pulley 64 is installed on the side wall of one of the rotating shafts 34, and a synchronous belt 63 is installed between the lower synchronous pulley 64 and the upper synchronous pulley 62.

[0030] The overrunning clutch 65 in the present technical solution has a unidirectional rotation function, that is, when rotating in a clockwise (counterclockwise) direction, the inner and outer rings are equivalent to the bearing 68, and when rotating in a counterclockwise (clockwise) direction, the inner and outer rings are equivalent to a fixed connection.

[0031] Among them, an infrared imaging temperature sensor is installed between the front walls of the two mounting plates 21. The infrared imaging temperature sensor is located on the front side of the needle 31. The infrared imaging temperature sensor can measure the temperature of the roller body 32 and the needle 31, while the terminal temperature of the needle 31 is in an open-loop state. The set infrared imaging temperature sensor directly monitors the axial temperature of the roller body 32 and the needle 31 in real time, forming a terminal temperature closed-loop control with good temperature control effect.

[0032] The working process of this device is as follows: when using this technical solution, first set the initial parameters such as the profiling electromagnetic heating coil 42 and the current, and set the target temperature of the needle 31, the electromagnetic heating component 4 is started, and the profiling electromagnetic heating coil 42 in the heating cover 41 is energized to start preheating the needle 31. Next, the piston rod of the main cylinder 7 contracts, and the movable frame component 2 and the thorn wheel component 3, electromagnetic heating component 4, and rotary power component 6 connected thereto are all in a lifting state. Then the reduction motor 61 is started and rotates counterclockwise at a uniform speed. At this time, the inner and outer rings of the overrunning clutch 65 are in a fixed connection state, and the output shaft of the reduction motor 61 is connected to the transmission shaft of the upper synchronous pulley 62, and the thorn wheel component 3 is driven to rotate synchronously counterclockwise through the synchronous belt 63 to ensure that the circumferential direction of the needle 31 is evenly heated. After the surface temperature of the needle 31 reaches the preset temperature, the cord layer rubber conveyor belt is started to transport the cord layer rubber from the previous composite process to the puncture area of ​​the thorn wheel component 3 just below.

[0033] The piston rod of the main cylinder 7 extends out, and the movable component 2 and other components connected thereto move downward. The needles 31 pierce the rubber material under the action of the main cylinder force 7. As the rubber material is transported, the licker-in roller assembly 3 rotates clockwise around the rotating shaft 34 under the action of the horizontal force of the rubber material. At this time, the overrunning clutch 65 rotates in the opposite direction, and the inner and outer rings are equivalent to bearings. The output shaft power of the reduction motor 61 is disconnected. As the roller body 32 rotates, all the radial needles 31 can be evenly heated. At the same time, the reduction motor 61 stops moving after receiving the action signal of the main cylinder 7.

[0034] The rubber material of the cord layer is continuously conveyed and evenly punctured, and is used as a semi-finished raw material for the subsequent molding machine. When the specifications are switched, the piston of the main cylinder 7 contracts, and the licker-in assembly 3, the heating assembly 4, the rotating assembly 6, etc. are lifted, and the pricking needle 31 is separated from the rubber conveyor belt. The reduction motor 61 receives the signal from the main cylinder 7 and re-intervenes, actively driving the licker-in assembly to rotate clockwise, ensuring that the pricking needle 31 in the circumferential direction is evenly heated and maintains the preset temperature. When mechanical processing is required, the above operation is repeated until shutdown.

[0035] All technical features in this embodiment can be freely combined according to actual needs.

[0036] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art may still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention, and the contents not described in detail in this specification shall belong to the prior art known to professional and technical personnel in the field.

Claims

1. A heating device for puncturing a cord layer, comprising a mounting bracket (1), characterized in that: A main cylinder (7) is installed on the top of the mounting bracket (1). The telescopic end of the main cylinder (7) penetrates the mounting bracket (1) and is movably connected to the mounting bracket (1). The telescopic end of the main cylinder (7) extends to the mounting bracket (1) and is installed with a floating joint (8). A movable frame assembly (2) is arranged in the mounting bracket (1). The top of the movable frame assembly (2) is fixedly connected to the floating joint (8). The movable frame assembly (2) comprises a mounting plate (21). Two mounting plates (21) are provided and are installed on the side wall of the movable frame assembly (2). A lance assembly (3) is arranged between the two mounting plates (21). An electromagnetic heating assembly (4) is arranged between the lance assembly (3) and the movable frame assembly (2). A fixed frame (5) is installed on one side of the mounting bracket (1). A rotary power assembly (6) is arranged on the top of the movable frame assembly (2).

2. A heating device for puncturing a cord layer according to claim 1, characterized in that: The thorn wheel assembly (3) comprises a roller body (32), the side wall of which is mounted evenly distributed thorn needles (31), the side wall of which is symmetrically fixedly connected to a rotating shaft (34), the side wall of which is mounted a bearing seat (33), and the bearing seat (33) is fixedly connected to an inner wall of one side of a mounting plate (21).

3. The device for heating a puncture hole on a cord layer according to claim 1, characterized in that: The electromagnetic heating assembly (4) comprises a heating cover (41), and L-shaped brackets (43) are respectively installed on the outer walls of both sides of the heating cover (41), the top of the L-shaped bracket (43) is fixedly connected to the bottom of the mounting plate (21), and a contoured electromagnetic heating coil (42) is installed at the bottom of the heating cover (41).

4. A heating device for puncturing a cord layer according to claim 2, characterized in that: The rotary power assembly (6) comprises a reduction motor mounting bracket (67), the reduction motor mounting bracket (67) is L-shaped, one side of the (27) is hollow, the bottom of the reduction motor mounting bracket (67) is fixedly connected to the top of the movable frame assembly (2), a reduction motor (61) is mounted on one side of the reduction motor mounting bracket (67), a transmission shaft bracket (69) is mounted on the top of the mounting plate (21), two transmission shaft brackets (69) are provided, bearings (68) are respectively mounted on the two transmission shaft brackets (69), and a bearing (68) is mounted between the two bearings (68). A transmission shaft is provided, on which an overrunning clutch (65) is installed, and an upper synchronous pulley (62) is installed on the side wall of the overrunning clutch (65). One end of the transmission shaft in the bearing (68) passes through the bearing (68) and is extended to the outer side of a transmission shaft bracket (69) on which a coupling (66) is installed. The output end of the reduction motor (61) passes through a reduction motor mounting bracket (67) and is fixedly connected to the coupling (66). A lower synchronous pulley (64) is installed on the side wall of one of the rotating shafts (34), and a synchronous belt (63) is installed between the lower synchronous pulley (64) and the upper synchronous pulley (62).

5. The device for heating a puncture hole on a cord layer according to claim 1, characterized in that: An infrared image temperature sensor is installed between the front walls of the two mounting plates (21), and the infrared image temperature sensor is located on the front side of the puncture needle (31).

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