Cutting device and press equipment and silent tire production system containing same

Abstract

The application provides a cutting device for cutting the tail of sound-absorbing cotton in the inner wall of a tire, a pressing device and a mute tire production system. The cutting device comprises a mounting plate, a first driver, a detection element and a cutting element, a sliding mechanism arranged on the mounting plate, and a first connecting plate connected with the sliding mechanism. The detection element and the cutting element are arranged on the first connecting plate, and the driving end of the first driver is fixedly connected with the first connecting plate. The cutting device, the pressing device and the mute tire production system have the technical effects of automatically detecting the position of the tail of sound-absorbing cotton and automatically cutting the tail of sound-absorbing cotton.

Description

Technical Field

[0001] This invention relates to the field of tire production auxiliary equipment, and more particularly to a cutting device for cutting off the tail of sound-absorbing cotton material on the inner wall of a tire, as well as a sound-absorbing cotton pressing device and a silent tire production system containing the cutting device. Background Technology

[0002] With the market share of new energy vehicles, led by electric vehicles, increasing year by year, and given that new energy vehicles have no engine and therefore generate less noise, traditional tires, due to their higher tire noise levels, can no longer meet the quiet environment requirements of new energy vehicles. In recent years, domestic and foreign tire manufacturers have focused on the research and development of quiet tires, and some automakers have already equipped their new energy vehicles with quiet tires. However, how to incorporate noise-reducing materials, such as sound-absorbing cotton, into the tire during manufacturing is an unavoidable issue.

[0003] The sound-absorbing cotton bonding process disclosed in Chinese Patent Document CN107107501A, published by Xibo Automation Co., Ltd. on August 29, 2017, involves: first, centering and fixing the tire; then, applying adhesive to the inner wall of the tire; and finally, driving the noise-absorbing strip at a linear drive speed greater than the tire's rotational speed, compressing the strip and reducing its length to less than its nominal length. This creates a gap between the two ends of the strip, allowing it to scrape against the adhesive device after relaxation, thus repositioning the adhesive device at the ends and fixing the ends. However, this sound-absorbing cotton bonding process has the following shortcomings:

[0004] 1. If the adhesive used to bond the noise-absorbing strip (i.e., strip-shaped sound-absorbing cotton) is too viscous or the sound-absorbing cotton material is too soft, there may be situations where the internal stress of the sound-absorbing cotton is insufficient to overcome the resistance of the adhesive, or the sound-absorbing cotton is too soft to overcome the resistance of the adhesive. Therefore, this type of sound-absorbing cotton bonding process has strict requirements on the selection and matching of the sound-absorbing cotton and the adhesive, and its applicability is limited.

[0005] II. As attached Figure 1 and 2 As shown, during tire manufacturing, even tires of the same batch and specification may have slight variations in their inner circumference lengths T1 and T2. For example, the inner circumference of one 17-inch passenger car tire might be 2000 mm, while another tire of the same batch and specification might have an inner circumference of 2010 mm. Therefore, using this sound-absorbing cotton bonding process can result in situations where the length X of the sound-absorbing cotton is greater than or less than the inner circumference of the tire, leading to an excessively large gap between the head X1 and tail X2 of the sound-absorbing cotton (see attached diagram). Figure 1 () or partially overlapping (see appendix) Figure 2 Therefore, it is impossible to achieve the ideal fit.

[0006] In summary, the manufacturing process of applying strip-shaped sound-absorbing cotton to the inner wall of a tire and ensuring accurate alignment between the beginning and end of the material has become a technical problem that industry professionals need to overcome. Summary of the Invention

[0007] The process involves first setting the length X of the strip-shaped sound-absorbing cotton to be at least 10 mm greater than the inner circumference of the tire. Then, starting from the head X1 of the sound-absorbing cotton, the sound-absorbing cotton X is attached to the adhesive material on the inner wall of the tire. The first tail of the sound-absorbing cotton (i.e., the tail before cutting) overlaps with the head of the sound-absorbing cotton. Then, the first tail is cut off according to the actual process requirements to form the second tail of the sound-absorbing cotton, and a pre-set gap is reserved between the second tail and the head.

[0008] To this end, the applicant proposes a cutting device for cutting off the tail of sound-absorbing cotton material on the inner wall of a tire, which includes a mounting plate, a first driver, a detection element and a cutting element, a sliding mechanism disposed on the mounting plate, and a first connecting plate connected to the sliding mechanism; wherein the detection element and the cutting element are disposed on the first connecting plate, and the driving end of the first driver is fixedly connected to the first connecting plate.

[0009] Preferably, it further includes a second connecting plate fixedly connected to the mounting plate, and a material handling device disposed on the second connecting plate.

[0010] Preferably, the material handling device is disposed on the side of the cutting element and located in the middle of the cutting element.

[0011] Preferably, the detection element is disposed on the driving end of the second driver, and the second driver is disposed on the first connecting plate, and the cutting element is disposed on the first connecting plate via the cutting blade bracket.

[0012] Preferably, the detection element and the cutting element are disposed on the cutting blade holder, and the cutting blade holder is disposed on the first connecting plate.

[0013] Preferably, the sliding mechanism includes a first slide rail fixedly connected to the mounting plate, and a first slider that cooperates with the first slide rail and can move relative to it, wherein the first connecting plate is fixedly connected to the first slider.

[0014] Preferably, the cutting element is a heating wire, a laser, a cutting line, or a blade; the detection element is a vision camera, a radar detection device, an ultrasonic detection device, a photoelectric sensor, or a fiber optic sensor; and the material handling device is a needle-type suction cup.

[0015] Preferably, the mounting plate is provided with an arc-shaped waist-shaped hole for adjusting the position of the mounting plate, and the first driver is fixedly connected to the mounting plate.

[0016] The present invention also discloses a sound-absorbing cotton pressing device, including a bracket; a tire fixing assembly disposed on the bracket for fixing and driving the tire to rotate; and a pressing head assembly, the pressing head assembly including a motor, the pressing head assembly further including the aforementioned cutting device, and the cutting device being driven to move by the motor.

[0017] The present invention also discloses a silent tire production system, including a bonding device for applying sound-absorbing cotton to the inner wall of the tire, which further includes the aforementioned sound-absorbing cotton pressing device.

[0018] As can be seen from the above-disclosed technical content, the cutting device, pressing equipment, and silent tire production system of the present invention are mainly designed to include a mounting plate, a first driver, a detection element and a cutting element, a sliding mechanism disposed on the mounting plate, and a first connecting plate connected to the sliding mechanism; wherein the detection element and the cutting element are disposed on the first connecting plate, and the driving end of the first driver is fixedly connected to the first connecting plate, so as to achieve the technical effects of online automatic detection of the tail position of the sound-absorbing cotton material and automatic cutting. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of sound-absorbing cotton bonding when the inner circumference length T1 of a tire of the same specification is greater than the length X of the sound-absorbing cotton in the prior art.

[0020] Figure 2 This is a schematic diagram of sound-absorbing cotton bonding when the inner circumference length T2 of a tire of the same specification is less than the length X of the sound-absorbing cotton in the prior art.

[0021] Figure 3 This is a schematic diagram of the cutting device in the first embodiment of the present invention.

[0022] Figure 4 This is a schematic diagram of the action of the detection element detecting the position of the first tail of the sound-absorbing cotton in the first embodiment of the present invention.

[0023] Figure 5 This is a schematic diagram of the action of the cutting element cutting the first tail of the sound-absorbing cotton in the first embodiment of the present invention.

[0024] Figure 6 This is a schematic diagram of the cutting device in the second embodiment of the present invention.

[0025] Figure 7 This is a schematic diagram of the action of the detection element detecting the position of the first tail of the sound-absorbing cotton in the second embodiment of the present invention.

[0026] Figure 8 This is a schematic diagram of the action of the material handling device grabbing and fixing the first tail of the sound-absorbing cotton in the second embodiment of the present invention.

[0027] Figure 9 This is a schematic diagram of the action of the cutting element cutting the first tail of the sound-absorbing cotton in the second embodiment of the present invention.

[0028] Figure 10 This is a schematic diagram of the sound-absorbing cotton pressing device of the present invention. Detailed Implementation

[0029] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings.

[0030] Example 1: See Appendix Figures 3 to 5 As shown, this invention discloses a cutting device 1 for cutting off the tail of sound-absorbing cotton material on the inner wall of a tire. It includes a mounting plate 10, a first driver 20, a detection element 30, a cutting element 40, a sliding mechanism 60 disposed on the mounting plate 10, and a first connecting plate 50 connected to the sliding mechanism 60. The detection element 30 and the cutting element 40 are disposed on the first connecting plate 50. The driving end 21 of the first driver 20 is fixedly connected to the first connecting plate 50. The sliding mechanism 60 may include a slide rail 61 and a slider 62. The first connecting plate 50 is fixedly connected to the slider 62, and the slide rail 61 is fixedly disposed on the mounting plate 10. Therefore, the first driver 20 can drive the first connecting plate 50 to move relative to the mounting plate 10, thereby detecting the position of the first tail of the sound-absorbing cotton material through the detection element 30 and cutting off the first tail of the material through the cutting element 40.

[0031] Example 2: See Appendix Figures 6 to 9 As shown, based on Embodiment 1, the present invention further includes a second connecting plate 11 fixedly connected to the mounting plate 10, and a material-grabbing device 70 disposed on the second connecting plate 11. Therefore, when the cutting device 1 moves to the predetermined cutting position, the material-grabbing device 70 can first grasp and fix the first material tail before cutting, and then move the cut first material tail into the tire and transport it to a designated position, thereby achieving online recycling of waste material (i.e., the first material tail). Furthermore, preferably, the material-grabbing device 70 can be disposed on the side of the cutting element 40 and located in the middle of the cutting element 40, so that the material-grabbing device 70 can grasp and fix the first material tail with a certain width, preventing the first material tail from moving during cutting and improving the cutting effect.

[0032] Optionally, a second driver (not shown) is provided on the first connecting plate 50 in Embodiment 1 or Embodiment 2, and the detection element 30 described in this invention is disposed at the driving end of the second driver. The second driver drives the detection element 30 to extend or retract, so as to detect the position of the first material tail from a distance. The cutting element 40 is disposed on the first connecting plate 50 via the cutting blade bracket 41. When detecting the position of the first material tail, the second driver drives the detection element 30 to extend. After determining the position of the first material tail, the second driver drives the detection element 30 to retract, and then the first driver 20 drives the cutting element 40 to cut off the first material tail. That is to say, this structure adopts a time-sharing and step-by-step approach to the detection and cutting of the first material tail.

[0033] Optionally, in Embodiment 1 or Embodiment 2, both the detection element 30 and the cutting element 40 can be mounted on the cutter holder 41, and the cutter holder 41 can be fixedly mounted on the first connecting plate 50. Specifically, the positions of the detection element 30 and the cutting element 40 can be staggered (e.g., the detection element 30 is mounted at the front end of the cutter holder 41, and the cutting element 40 is mounted close to the first connecting plate 50). Figure 4 and Figure 7 As shown, the first driver 20 first drives the cutter bracket 41 to move so that the detection element 30 can detect the position of the first material tail, and then continues to drive the cutter bracket 41 to move so that the cutting element 40 can cut the first material tail. That is to say, this structure uses the detection and cutting of the first material tail to be carried out simultaneously and in a time-sharing manner, and this structure is suitable for situations where the detection element 30 is a photoelectric sensor or a fiber optic sensor.

[0034] Furthermore, when dealing with tires and sound-absorbing cotton of different specifications and models, it is necessary to first adjust the angle of the cutting element (i.e., ensure that the cutting element is perpendicular to the first material tail for cutting) to achieve a better cutting effect. The mounting plate 10 of the present invention may also be provided with an arc-shaped waist-shaped hole 12 for adjusting the position of the mounting plate 10, so as to adjust the position of the cutting device 1 as needed, thereby adjusting the cutting angle of the cutting element 40 relative to the first material tail, and preferably the first driver 20 is fixedly connected to the mounting plate 10 to support the first driver 20.

[0035] Preferably, the cutting element is a metal heating wire, a laser, a cutting line, or a blade; the detection element is a vision camera, a radar detection device, an ultrasonic detection device, a photoelectric sensor, a fiber optic sensor, or other detection mechanism that uses light as the detection medium; the material handling device is a needle-type suction cup or other fixed gripping structure with similar functions; and the first driver is a motor or a cylinder. In the accompanying drawings of the example, only a through-beam fiber optic sensor as the detection element and a metal heating wire as the cutting element are used as examples.

[0036] This invention also discloses an improved sound-absorbing cotton pressing device 100 (the original pressing device can be found in the applicant's invention patent application No. 202210230153X), which presses the sound-absorbing cotton tightly with the adhesive material on the inner wall of the tire to prevent the sound-absorbing cotton from loosening. The sound-absorbing cotton pressing device 100 includes a bracket 200; a tire fixing assembly 300 disposed on the bracket 200 for fixing and driving the tire to rotate; and a pressing head assembly 400, which includes a motor 401 and a slide rail 403 and a slider 404 disposed on an extension arm 402. The pressing head assembly also includes a cutting device 1 fixedly connected to the slider 404 as described above. The cutting device 1 is driven by the motor 401 to move along the slide rail 403 towards the inner wall of the tire via the slider 404, and cooperates with the first driver 20 in the cutting device 1 to realize the detection and cutting function of the first material tail.

[0037] The technical solution of this invention is applicable when the width of the sound-absorbing cotton being bonded is smaller than the bonding width of the tire (i.e., the opening width of the tire). The specific working principle is as follows: The sound-absorbing cotton is bonded to the adhesive material on the inner wall of the tire using an automated sound-absorbing cotton bonding equipment or manually, starting from the head of the cotton. The first tail of the sound-absorbing cotton overlaps with the head of the cotton. Then, the sound-absorbing cotton pressing equipment 100 (see attached diagram)... Figure 10 The motor 401 drives the cutting device 1 to move as a whole toward the inner wall of the tire to a predetermined position. Then, the first driver 20 or the second driver drives the detection element 30 to continue moving toward the inner wall of the tire to detect and determine the position of the first material tail (as shown in the attached diagram). Figure 4 As shown), the first tail of the material is then cut off by the cutting device 1 to form a new tail of material (i.e., the second tail of material) connected to the head of the material. Then, the cutting device is driven by the motor 401 to move out of the inner wall of the tire, and then the cutting device 20 takes the first tail of material that has been grabbed out of the tire.

[0038] The present invention also discloses a silent tire production system (not shown), including a bonding device for applying sound-absorbing cotton to the inner wall of the tire (the bonding device can be found in the applicant's invention patent No. 202110719867.2), which also includes the aforementioned sound-absorbing cotton pressing device 100, which automatically bonds the sound-absorbing cotton to the adhesive material on the inner wall of the tire by starting from the head of the sound-absorbing cotton, and overlaps the first tail of the sound-absorbing cotton with the head of the sound-absorbing cotton, and then the sound-absorbing cotton pressing device 100 cuts off and removes the first tail of the sound-absorbing cotton from the inside of the tire, and presses the sound-absorbing cotton (including the body, head and tail of the sound-absorbing cotton) tightly to the adhesive material on the inner wall of the tire.

[0039] As can be seen from the above-disclosed technical content, the cutting device, pressing equipment, and silent tire production system of the present invention are mainly designed to include a mounting plate, a first driver, a detection element and a cutting element, a sliding mechanism disposed on the mounting plate, and a first connecting plate connected to the sliding mechanism; wherein the detection element and the cutting element are disposed on the first connecting plate, and the driving end of the first driver is fixedly connected to the first connecting plate, so as to achieve the technical effects of online automatic detection of the tail position of the sound-absorbing cotton material and automatic cutting.

[0040] The above description is only a partial embodiment of this application, and its purpose is to illustrate the technical concept and features of this application. Any equivalent changes or alternative technical solutions that can be easily conceived by those skilled in the art under the guidance of the technical content of this application should be included within the protection scope of this application. Therefore, the protection scope of this application should be determined by the protection scope of the claims.

Claims

1. A cutting device for cutting off the tail of sound-absorbing cotton material on the inner wall of a tire, characterized in that: The device includes a mounting plate, a first driver, a detection element and a cutting element, a sliding mechanism disposed on the mounting plate, and a first connecting plate connected to the sliding mechanism. The detection element and the cutting element are disposed on the first connecting plate. The driving end of the first driver is fixedly connected to the first connecting plate. The sliding mechanism includes a first slide rail fixedly connected to the mounting plate and a first slider that cooperates with and is movable relative to the first slide rail. The first connecting plate is fixedly connected to the first slider. The mounting plate has an arc-shaped, waist-shaped hole for adjusting the position of the mounting plate. The first driver is fixedly connected to the mounting plate. The device also includes a second connecting plate fixedly connected to the mounting plate and a material-picking device disposed on the second connecting plate. The material-picking device is disposed on the side of the cutting element and located in the middle of the cutting element.

2. The cutting device for cutting off the tail of sound-absorbing cotton material on the inner wall of a tire according to claim 1, characterized in that: The detection element is disposed on the drive end of the second driver, and the second driver is disposed on the first connecting plate. The cutting element is disposed on the first connecting plate via the cutting blade bracket.

3. The cutting device for cutting off the tail of sound-absorbing cotton material on the inner wall of a tire according to claim 1, characterized in that: The detection element and the cutting element are disposed on the cutting blade holder, which is disposed on the first connecting plate.

4. The cutting device for cutting off the tail of sound-absorbing cotton material on the inner wall of a tire according to any one of claims 1 to 3, characterized in that: The cutting element is a heating wire, a laser, a cutting line, or a blade; the detection element is a vision camera, a radar detection device, an ultrasonic detection device, a photoelectric sensor, or a fiber optic sensor; and the material handling device is a needle-type suction cup.

5. A sound-absorbing cotton pressing device, comprising a support frame; a tire fixing assembly disposed on the support frame for fixing and driving tire rotation; and a pressing head assembly, the pressing head assembly including a motor, characterized in that: The pressing head assembly further includes a cutting device according to any one of claims 1 to 4, and the cutting device is driven to move by the motor.

6. A silent tire production system, comprising a bonding device for applying sound-absorbing cotton to the inner wall of a tire, characterized in that: It also includes the sound-absorbing cotton pressing device according to claim 5.

Images