Sewing device capable of pre-pressing and tire forming machine comprising same

Abstract

The utility model provides a sewing device capable of performing pre-pressing and a tire building machine comprising the same, the sewing device comprises a frame, a sewing assembly movably arranged on the frame and a first movement driving source, one end of the first movement driving source is fixedly arranged on the frame, and the other end of the first movement driving source is connected with the sewing assembly; the sewing assembly comprises a rotatable rolling element and a tooth-shaped element, the rolling element and the tooth-shaped element are arranged in parallel, the rolling element is provided with a rolling face, the tooth-shaped element is provided with a plurality of tooth-shaped structures, and the tooth-shaped structures are arranged perpendicular to the rolling face. According to the utility model, the seaming device capable of performing pre-pressing is designed, discontinuous pre-pressing is performed on the seam of the tire pre-composite part through the tooth-shaped element with a plurality of tooth-shaped structures, and then continuous rolling is performed on the seam of the tire pre-composite part subjected to discontinuous pre-pressing through the rolling element; therefore, the joint sewing quality is effectively improved.

Description

Technical Field

[0001] The utility model relates to the field of tire molding equipment, in particular to a sewing device capable of pre-pressing tire pre-combined parts and a tire molding machine containing the same. Background Art

[0002] During the green tire production process, different sheet-like tire pre-composites (mainly inner liner and sidewall composites) need to be attached to the building drum. When the tire pre-composites are attached to the building drum, seams are formed, which need to be sewn during the green tire molding process. Figure 1 The figure shows a schematic diagram of the principle of sewing in an existing sewing device. Sewing is usually performed by a movable sewing roller 101. When the seam needs to be sewn, the sewing roller 101 moves to the seam of the tire pre-composite on the building drum and rolls the seam by moving the sewing roller 101 along the axial direction of the building drum. When the sewing roller 101 rolls the seam, that is, continuously rolls from position A to position B, the seam in front of the sewing roller 101 at position A will slightly float due to the force of the sewing roller because the tire pre-composite is floating on the building drum. When the sewing roller moves from position A to position B, the tire pre-composite that has not yet been sewn is continuously rolled, so that the tire pre-composite is subjected to a force in the same direction, that is, the amount of seam floating in front of the sewing roller is continuously added. When the tire pre-composite reaches position B, the unsewn seam D in front of the sewing roller at position B will bulge and crack, making it impossible to sew. Summary of the Invention

[0003] In order to solve the above technical problems, the utility model provides a suturing device that can perform pre-pressing, including a frame, a suturing component movably arranged on the frame, and a first movable driving source, one end of the first movable driving source is fixedly arranged on the frame, and the other end of the first movable driving source is connected to the suturing component; the suturing component includes a rotatable rolling element and a toothed element, the rolling element and the toothed element are arranged in parallel, the rolling element has a rolling surface, the toothed element has a plurality of tooth-shaped structures, and the tooth-shaped structures are arranged perpendicular to the rolling surface.

[0004] Preferably, the suturing assembly includes a pressure roller seat, a roller shaft and a gear shaft, the roller element is arranged on the pressure roller seat through the roller shaft, the roller element is rotatably arranged on the roller shaft, and the toothed element is rotatably arranged on the gear shaft.

[0005] Preferably, the toothed element is movably arranged on the frame via a moving mechanism.

[0006] Preferably, the moving mechanism is a cylinder, one end of the cylinder is fixedly arranged on the frame or the pressure roller seat or is independently arranged, and the other end of the cylinder is connected to the gear shaft.

[0007] Preferably, the moving mechanism includes a limiting member provided on the pressure roller seat or the frame or provided independently, a movable guide shaft partially provided in the limiting member, and a first elastic element sleeved on the guide shaft.

[0008] Preferably, the moving mechanism includes a swing arm rotatably arranged on the pressure roller seat, wherein the swing arm includes a first swing arm and a second swing arm arranged in parallel at both ends of the pressure roller seat, the gear shaft is arranged between the first swing arm and the second swing arm, and also includes a second elastic element arranged between the swing arm and the pressure roller seat, and a blocking member arranged on the pressure roller seat, and the blocking member is arranged above the swing arm.

[0009] Preferably, the pressure roller seat includes a first end portion and a second end portion of the pressure roller seat arranged in parallel, a first fixed shaft is fixedly arranged between the first end portion and the second end portion of the pressure roller seat, a second fixed shaft is fixedly arranged between the first swing arm and the second swing arm, one end of the second elastic element is arranged on the first fixed shaft, and the other end of the second elastic element is arranged on the second fixed shaft.

[0010] Preferably, the toothed element is arranged to protrude from the rolling element.

[0011] Preferably, the toothed element is a gear.

[0012] The utility model also provides a tire building machine, comprising a building drum and the aforementioned suturing device capable of performing pre-pressing, wherein the suturing device can move along the axial direction of the building drum.

[0013] The utility model mainly designs a suturing device capable of pre-pressing, realizes discontinuous pre-pressing of the joints of the tire pre-composite parts by means of a toothed element with a plurality of toothed structures, and then continuously rolls the joints of the tire pre-composite parts after the discontinuous pre-pressing by means of a rolling element, thereby effectively improving the joint suturing quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 The figure is a schematic diagram of the principle of sewing a tire pre-composite by a sewing device in the prior art.

[0015] Figure 2 This is an overall schematic diagram of the suturing device described in the present invention.

[0016] Figure 3 This is a schematic diagram of a suturing assembly with a first embodiment of a moving mechanism according to the present invention.

[0017] Figure 4 This is a schematic diagram of a suturing assembly with a second embodiment of a moving mechanism according to the present invention.

[0018] Figure 5 This is a schematic diagram of a suturing assembly with a third embodiment of a moving mechanism according to the present invention.

[0019] Figure 6 for Figure 5 First-person view.

[0020] Figure 7 for Figure 5 Second perspective view.

[0021] Figure 8 The present invention is a schematic diagram of the principle of sewing a tire pre-composite by the sewing device of the present invention.

[0022] Figure 9 It is a schematic diagram of the molding machine described in the present invention. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the present invention will be described clearly and completely below with reference to the accompanying drawings.

[0024] like Figures 2 to 8 As shown, the utility model discloses a sewing device 1 (hereinafter referred to as the sewing device) that can pre-press tire pre-composites, including a frame 10, a sewing component 20 that is movably arranged on the frame 10 by a first movable component 11 (such as a combination of a slide rail and a slider), and a first movable drive source 30, one end of the first movable drive source 30 is fixedly arranged on the frame 10, and the other end of the first movable drive source 30 is connected to the sewing component 20, and the first movable drive source 30 is used to drive the sewing component 20 to approach or move away from the forming drum 2; the sewing component 20 includes a rotatable rolling element 21 and a toothed element 22, the rolling element 21 and the toothed element 22 are arranged in parallel, the rolling element 21 has a rolling surface 211, the toothed element 22 has a plurality of toothed structures 221, the toothed structure 221 is arranged perpendicular to the rolling surface 211, the toothed element is used to perform discontinuous pre-pressing on the seam of the tire pre-composite, and the rolling element is used to continuously roll the seam after pre-pressing.

[0025] like Figure 2 and 8As shown, the sewing device 1 described in the present invention is provided with a sewing assembly 20 having a toothed element 22 and a rolling element 21. When sewing the seam 301 of the tire pre-composite 3, the tire pre-composite 3 is first discontinuously rolled as shown by F1 by the multiple toothed structures 221 on the toothed element 22, so that the seam 301 of the tire pre-composite 3 is pre-pressed first, and then the seam 301 of the tire pre-composite 3 after pre-pressing is continuously rolled as shown by F2 by the rolling element 21, thereby achieving sewing of the seam 301 of the tire pre-composite 3. The tire pre-composite 3 is discontinuously rolled through the gaps between the tooth-shaped structures 221, and the tire pre-composite 3 at the rolled position is firmly adhered together, so that the tire pre-composite 3 will not bulge or crack due to continuous rolling in a certain direction, thereby achieving pre-positioning of the joints of the tire pre-composite 3. When the joints of the pre-positioned tire pre-composite 3 are continuously rolled by the rolling element 21, the joints are not easy to crack, which effectively improves the quality of the joint suture.

[0026] Preferably, the toothed element 22 is a gear, and the specification parameters of the gear 22 can be adjusted to control the rolling spacing of the gear 22 during the discontinuous pre-pressing of the joint of the tire pre-composite 3, thereby achieving better joint suture quality.

[0027] like Figures 3 to 7 As shown, the suturing assembly 20 of the present invention further includes a roller seat 23, on which the roller element 21 is disposed via a roller shaft 24, and the roller element 21 is rotatably disposed on the roller shaft 24. The suturing assembly 20 of the present invention further includes a gear shaft 25, on which the toothed element 22 is rotatably disposed.

[0028] The pressure roller seat 23 of the present invention includes a first end portion 231 and a second end portion 232 of the pressure roller seat, which are arranged in parallel. The rolling element 21 is arranged within the range defined by the first end portion 231 and the second end portion 232 of the pressure roller seat. Specifically, one end of the rolling shaft 24 is arranged on the first end portion 231 of the pressure roller seat, and the other end of the rolling shaft 24 is arranged on the second end portion 232 of the pressure roller seat.

[0029] like Figure 2 and 9 As shown, the toothed element 22 of the present invention is movably mounted on the frame 10 along the radial direction X of the building drum 2 via a moving mechanism 26. When the toothed element 22 contacts the building drum 2 to pre-press the joints of the tire pre-composite 3, the movement of the toothed element 22 adjusts the pressure of the toothed element 22 on the building drum 2, thereby adjusting the pressure of the toothed element 22 on the tire pre-composite 3.

[0030] like Figure 3 As shown in the figure, as a first embodiment of the moving mechanism 26 described in the utility model, the moving mechanism 26 can be a cylinder 206, which is arranged along the radial X direction of the building drum 2. One end of the cylinder 206 is fixedly mounted on the pressure roller seat 23 or the frame 10, or the cylinder 206 is provided separately, and the other end of the cylinder 206 is connected to the gear shaft 25. When the sewing device reaches the specified position, the cylinder drives the gear shaft 25 to move toward the building drum 2, thereby driving the toothed element 22 to move toward the building drum 2, so that the toothed element 22 contacts the building drum 2, and performs discontinuous pre-pressing on the seam of the tire pre-composite 3 on the building drum 2.

[0031] like Figure 4 As shown in FIG. 2 , as a second embodiment of a moving mechanism 26 with a simple structure and lower cost, the moving mechanism 26 of the present invention includes a stopper 261 disposed on the pressure roller seat 23 or the frame, or independently disposed, a guide shaft 262 that is movable and partially disposed within the stopper 261, and a first elastic element 263 that is sleeved on the guide shaft 262. One end of the guide shaft 262 is connected to the gear shaft 25, and the other end of the guide shaft 262 is movably disposed within the stopper 261. The first elastic element 263 is disposed between the stopper 261 and the gear shaft 25. When the toothed element 22 is driven by the first moving drive source 30 to contact and abut against the building drum 2, the toothed element 22 is subjected to the reverse force of the building drum 2, causing the guide shaft 262 to move away from the building drum 2, thereby driving the toothed element 22 to move away from the building drum 2. This compresses the first elastic element 263 disposed between the gear shaft 25 and the pressure roller seat 23. The rebound force of the compressed first elastic element 263 adjusts the pre-pressing pressure of the toothed element 22 on the tire pre-composite 3. Preferably, the first elastic element 263 is a spring.

[0032] like Figures 5 to 7As shown, as an embodiment with a simpler structure and a higher flexibility of the toothed element 22 relative to the rolling element 21, the moving mechanism 26 includes a swing arm 264 rotatably arranged on the pressure roller seat 23 through a bearing member 269, wherein the swing arm 264 includes a first swing arm 2641 and a second swing arm 2642, the first swing arm 2641 and the second swing arm 2642 are approximately L-shaped, the first swing arm 2641 and the second swing arm 2642 are parallel to the two ends of the pressure roller seat 23, that is, the first swing arm 2641 is rotatably arranged at the first end 231 of the pressure roller seat, and the second swing arm The gear shaft 25 is disposed between the first swing arm 2641 and the second swing arm 2642. The gear shaft 25 further includes a second elastic element 265 disposed between the swing arm 264 and the roller seat 23, and a stopper 266 disposed on the roller seat 23. The stopper 266 is disposed above the swing arm 264 and includes a first stopper 2661 and a second stopper 2662. The first stopper 2661 is disposed above the first swing arm 2641, and the second stopper 2662 is disposed above the second swing arm 2642. The stopper 266 limits the swinging of the swing arm 264, preventing the toothed element 22 from further swinging toward the rolling element 21. When the toothed element 22 is driven by the first driving source 30 to rest against the building drum 2 and is moved away from the rolling element 21 by the reverse force exerted by the building drum 2, the second elastic element 265 is in a stretched state. The rebound force of the second elastic element 265 prevents the toothed element 22 from continuing to move away from the rolling element 21, thereby causing the toothed element 22 to press against the building drum 2 with a certain force. When the stitching device moves as a whole, the toothed element 22 is driven to perform a discontinuous pre-stitching of the seam of the tire pre-composite 3 with a certain force. Furthermore, through the above arrangement, when the toothed element 22 is no longer pressed against the building drum 2, it is reset by the rebound force of the second elastic element 265.

[0033] Preferably, a first fixed shaft 267 is fixedly disposed between the first end portion 231 and the second end portion 232 of the pressure roller seat, a second fixed shaft 268 is fixedly disposed between the first swing arm 2641 and the second swing arm 2642, one end of the second elastic element 265 is disposed on the first fixed shaft 267, and the other end of the second elastic element 265 is disposed on the second fixed shaft 268. Multiple second elastic elements 265 can be provided as needed, and second elastic elements 265 with different expansion and contraction amounts can be used to adjust the pressure during pre-pressing of the toothed element 22. Preferably, the second elastic element 265 is a spring.

[0034] like Figure 4 and 5As shown in Figure 9, in the second and third embodiments described above, since the movement of the toothed element 22 is a passive movement, in these two embodiments, the toothed element 22 is arranged to protrude from the rolling element 21, that is, the circumferential highest point C1 of the toothed element 22 is higher than the circumferential highest point C2 of the rolling element 21. When the first mobile driving source 30 drives the sewing device to rest against the forming drum 2, the toothed element 22 first contacts the forming drum 2. At this time, the rolling element 21 is not in contact with the forming drum 2. When the first mobile driving source 30 drives the sewing device to continue to move toward the forming drum 2, until the rolling element 21 is in rolling contact with the forming drum 2, the toothed element 22 has a certain pressure on the forming drum 2. At this time, the toothed element 22 and the rolling element 21 move together along the axial Y direction of the forming drum 2, so that the toothed element 22 performs discontinuous pre-pressing on the seam of the tire pre-composite 3 in the front, and the rolling element 21 performs continuous rolling on the seam of the tire pre-composite 3 after pre-pressing in the rear.

[0035] like Figure 2 As shown, the stitching device of the present invention further includes a mounting plate 40, on which the frame 10 is movably mounted via a second movable assembly 12. The device also includes a second movable drive source 50, one end of which is fixedly mounted on the mounting plate 40 and the other end of which is connected to the frame 10. The second movable drive source 50 is used to drive the frame 10 to move on the mounting plate 40. With this arrangement, when the stitching device stitches the building drum 2, the second movable drive source 50 first drives the mounting plate 40 toward a stitching position close to the building drum 2, driving the stitching assembly 20 toward the stitching position. Once the building drum 2 reaches the stitching position, the first movable drive source 30 then drives the stitching device to the stitching position to stitch the tire pre-composite 3. The building drum 2 can be moved a portion of its travel before reaching the stitching position and then a portion of its travel after reaching the stitching position, thereby reducing the operating time of the building drum 2 and improving the production efficiency of green tires.

[0036] like Figure 9 As shown, the utility model also provides a forming machine 100, which includes a forming drum 2 and the aforementioned sewing device 1. The sewing device 1 can move along the axial Y direction of the forming drum 2, thereby driving the toothed element 22 and the rolling element 21 on the sewing device to move along the axial direction of the forming drum 2, and the toothed element 22 is used to discontinuously pre-press the joints of the tire pre-composite 3 on the forming drum 2, and the rolling element 21 is used to continuously roll the joints of the tire pre-composite 3 after pre-pressing, thereby realizing sewing of the joints.

[0037] The utility model mainly designs a suturing device 1 that can pre-press a tire pre-composite 3, realizes discontinuous pre-pressing of the joints of the tire pre-composite 3 by a toothed element 22 having a plurality of toothed structures 221, and then continuously rolls the joints of the tire pre-composite 3 after the discontinuous pre-pressing by a rolling element 21, thereby effectively improving the joint suturing quality.

[0038] The above content 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 replacement technical solutions that can be easily conceived by those skilled in the art based on the technical content of this application should be included in the scope of protection of this application. Therefore, the scope of protection of this application should be based on the scope of protection of the claims.

Claims

1. A suturing device capable of pre-pressing, characterized in that: It includes a frame, a suturing component movably arranged on the frame, and a first mobile driving source, one end of the first mobile driving source is fixedly arranged on the frame, and the other end of the first mobile driving source is connected to the suturing component; the suturing component includes a rotatable rolling element and a toothed element, the rolling element and the toothed element are arranged in parallel, the rolling element has a rolling surface, the toothed element has a plurality of tooth-shaped structures, and the tooth-shaped structures are arranged perpendicular to the rolling surface.

2. The pre-pressing suturing device according to claim 1, characterized in that: The suturing assembly includes a pressure roller seat, a roller shaft and a gear shaft. The roller element is arranged on the pressure roller seat through the roller shaft. The roller element is rotatably arranged on the roller shaft. The toothed element is rotatably arranged on the gear shaft.

3. The pre-pressing suturing device according to claim 2, characterized in that: The toothed element is movably arranged on the frame through a moving mechanism.

4. The pre-pressing suturing device according to claim 3, characterized in that: The moving mechanism is a cylinder, one end of which is fixedly arranged on the frame or the pressure roller seat or is independently arranged, and the other end of the cylinder is connected to the gear shaft.

5. The pre-pressing suturing device according to claim 3, characterized in that: The moving mechanism includes a limiting member arranged on the pressure roller seat or the frame or independently arranged, a movable guide shaft partially arranged in the limiting member, and a first elastic element sleeved on the guide shaft.

6. The pre-pressing suturing device according to claim 3, characterized in that: The moving mechanism includes a swing arm rotatably arranged on the pressure roller seat, wherein the swing arm includes a first swing arm and a second swing arm arranged in parallel at both ends of the pressure roller seat, the gear shaft is arranged between the first swing arm and the second swing arm, and also includes a second elastic element arranged between the swing arm and the pressure roller seat, and a blocking member arranged on the pressure roller seat, and the blocking member is arranged above the swing arm.

7. The pre-pressing suturing device according to claim 6, characterized in that: The pressure roller seat includes a first end portion and a second end portion of the pressure roller seat arranged in parallel, a first fixed shaft is fixedly arranged between the first end portion and the second end portion of the pressure roller seat, a second fixed shaft is fixedly arranged between the first swing arm and the second swing arm, one end of the second elastic element is arranged on the first fixed shaft, and the other end of the second elastic element is arranged on the second fixed shaft.

8. The pre-pressing suturing device according to any one of claims 5 to 7, characterized in that: The toothed element is arranged to protrude from the rolling element.

9. The pre-pressing suturing device according to any one of claims 5 to 7, characterized in that: The toothed element is a gear.

10. A tire building machine, comprising a building drum, characterized in that: It also includes a pre-pressing sewing device as described in any one of claims 1 to 9, and the sewing device can move along the axial direction of the forming drum.

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