Righting device of cord yarn forming drum
By designing a curtain yarn forming drum and straightening device including a screw rod, a guide rod and a cylinder, the problem of cumbersome adjustment methods in the prior art is solved, and fast and easy position adjustment is achieved, reducing the failure rate and manual labor intensity.
Patent Information
- Application Number
- CN202420917839.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-29
- Publication Date
- 2025-04-15
- Estimated Expiration
- 2034-04-29
AI Technical Summary
The adjustment method of the existing curtain yarn forming drum is complicated, resulting in the cylinder drop and frequent failures, and manual adjustment is difficult to ensure accuracy and stability.
A curtain forming drum straightening device including a base, a straightening mechanism and an adjustment device is designed. The adjustment device adopts a combination of screw rod, guide rod, handwheel, cylinder and sliding sleeve. The screw rod and sliding sleeve are driven to move through the handwheel rotation, and the cylinder shaft expands and retracts to control the position of the straightening mechanism to achieve rapid adjustment.
The rapid adjustment of the position of the straightening mechanism is achieved, the labor intensity of the operator is reduced, the cylinder fixing method is stable, and the equipment failure rate is reduced.
Smart Images
Figure CN222756137U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to green tire processing equipment for tires, and more specifically, to a straightening device for a curtain yarn forming drum. Background Art
[0002] The cord yarn is also called the cord fabric. When the tire is manufactured, it has multiple layers of cord yarn inside to form a cord yarn layer. The cord yarn layer is the skeleton of the pneumatic tire. When the tire is in use, the cord yarn layer bears most of the load on the tire. When the pneumatic tire is manufactured, the cord yarn is wound on the forming drum in multiple layers to form a cord yarn layer. The cord yarn layer is extruded by the extrusion roller and the forming drum, and then the outer layer such as rubber is wrapped on the cord yarn layer to form a green tire. The green tire is made into a tire through a series of subsequent processes such as vulcanization. In order to make the cord yarn layer stronger, the edge of the cord yarn layer is folded in the opposite direction through the airbag when manufacturing the green tire. However, during the process of winding the cord yarn on the forming drum, since the part of the cord yarn layer that needs to be folded in the opposite direction is outside the two ends of the forming drum and is not supported by the forming drum, this part of the cord yarn layer is prone to wrinkles, resulting in the cord yarn layers not being completely fitted together when folded in the opposite direction.
[0003] In order to avoid wrinkles in the curtain yarn during winding, the curtain yarn is straightened by a straightening device during winding (such as Figure 7 , Figure 8 As shown in the figure, the roller 8 of the straightening device cooperates with the extrusion roller 26 to squeeze and support the curtain yarn layer. After the curtain yarn layer is wound, the straightening device and the extrusion roller 26 actively move away from the forming drum, and the curtain yarn at both ends of the forming drum is reversely folded through the airbag. Due to the different sizes of tires, the sizes of the curtain yarn layers are also different, so the two rollers 8 need to be adjusted according to the size of the tire. The movement of the roller 8 is controlled by the cylinder, and the stroke of the cylinder is fixed. In order to enable the straightening device to straighten the curtain yarn layers of different sizes, a position adjustment structure is designed for the cylinder seat to meet the relative position adjustment between the two rollers 8, such as Figure 8 As shown, the existing straightening device requires the operator to use a wrench to loosen the fixing bolt 27 and adjust the cylinder, cylinder seat and roller assembly to the left and right as a whole; in actual production, multiple adjustments are required every day according to product needs. During the adjustment process, it is impossible to ensure that the cylinder, cylinder seat and roller are in place at one time, and multiple attempts are required. The labor intensity of the personnel is high and the size and accuracy of manual adjustment are difficult to control. The existing cylinder and cylinder seat are connected by nuts, which are easy to loosen, causing the cylinder to fall and equipment failures to occur frequently. Utility Model Content
[0004] The utility model overcomes the shortcomings of the prior art and provides an implementation method of a straightening device on a curtain yarn forming drum, in the hope of solving the problem that the adjustment method of the prior straightening mechanism is complicated.
[0005] In order to solve the above technical problems, the utility model adopts the following technical solutions:
[0006] A straightening device for a curtain yarn forming drum comprises a base, two straightening mechanisms are arranged on the upper part of the base, the two straightening mechanisms are slidably arranged on both sides of the base, an adjusting device is also arranged on the upper part of the base, the adjusting device comprises a screw rod, a guide rod, a hand wheel, a first cylinder, and a second cylinder, the hand wheel is fixedly connected to one end of the screw rod, the screw rod has a two-section thread, including a forward thread and a reverse thread, the first cylinder is threadedly connected to the forward thread section of the screw rod, the second cylinder is threadedly connected to the reverse thread section of the screw rod, the first cylinder and the second cylinder are also respectively slidably connected to the guide rod, and the cylinder shafts of the first cylinder and the second cylinder are respectively connected to one of the straightening mechanisms.
[0007] Optional: The adjusting device also includes a first sliding sleeve and a second sliding sleeve, the first sliding sleeve is threadedly connected to the forward-rotating thread section of the screw rod, the second sliding sleeve is threadedly connected to the reverse-rotating thread section of the screw rod, the first sliding sleeve and the second sliding sleeve are also slidingly connected to the guide rod, the cylinder body of the first cylinder is connected to the first sliding sleeve, and the cylinder body of the second cylinder is connected to the second sliding sleeve.
[0008] Optionally: the first sliding sleeve is connected to the first cylinder via a first cylinder seat, and the second sliding sleeve is connected to the second cylinder via a second cylinder seat.
[0009] Optionally: the first cylinder seat and the second cylinder seat respectively have a cylinder fixing hole, the cylinder fixing hole has a notch, and a locking hole is provided between the two halves of the cylinder fixing hole. The cylinder bodies of the first cylinder and the second cylinder are respectively installed in the cylinder fixing holes of the first cylinder seat and the second cylinder seat, and are fixed by bolts passing through the locking holes.
[0010] Optionally, both ends of the lead screw and the guide rod are rotatably connected to the limit plate respectively.
[0011] Optional: The two righting mechanisms include a first righting mechanism and a second righting mechanism, the first righting mechanism and the second righting mechanism include slide rails respectively fixedly mounted at both ends of the base, a slider slidably sleeved on the slide rails, a connecting bracket is vertically fixedly mounted on the upper surface of the slider near the outer end, an L-shaped roller bracket is horizontally fixedly mounted on the connecting bracket, the fixed end of the roller bracket is connected to the connecting bracket, a roller is rotatably mounted on the free end of the roller bracket, and the free ends on the first righting mechanism and the second righting mechanism are directly opposite to each other.
[0012] Optionally: the cylinder shaft of the first cylinder is connected to the slider of the first straightening mechanism, and the cylinder shaft of the second cylinder is connected to the slider of the second straightening mechanism.
[0013] Optional: Rollers are made of nylon.
[0014] Optionally: the cylinder shaft of the first cylinder is connected to the slider of the first straightening mechanism via a floating joint, and the cylinder shaft of the second cylinder is connected to the slider of the second straightening mechanism via a floating joint.
[0015] Optionally: the straightening device is arranged on one side of the rotating surface of the forming drum, parallel to the axial direction of the forming drum, and the rollers of the first straightening mechanism and the second straightening mechanism are respectively located on both sides of the forming drum.
[0016] Compared with the prior art, the utility model has at least the following beneficial effects: the utility model can quickly adjust the position of the straightening mechanism, the adjustment method is easy, the labor intensity of the operators is low, and the fixing method of the cylinder is stable, which reduces the failure rate of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] Figure 1 This is a schematic diagram of the structure of the utility model Figure 1 ;
[0018] Figure 2 This is a schematic diagram of the structure of the utility model Figure 2 ;
[0019] Figure 3 This is a schematic diagram of the cylinder seat of the utility model;
[0020] Figure 4 This is a schematic diagram of the working state of the utility model. Figure 1 ;
[0021] Figure 5 This is a schematic diagram of the working state of the utility model. Figure 2 ;
[0022] Figure 6 This is a schematic diagram of the working state of the utility model. Figure 3 ;
[0023] Figure 7 It is a schematic diagram of the cooperation between the extrusion roller and the forming drum;
[0024] Figure 8 It is a schematic diagram of an existing righting device;
[0025] The serial numbers in the figure are as follows: 1. base; 2. first straightening mechanism; 3. second straightening mechanism; 4. slide rail; 5. slider; 6. connecting bracket; 7. roller bracket; 71. fixed end; 72. free end; 8. roller; 9. curtain yarn; 10. screw rod; 11. guide rod; 12. hand wheel; 13. first cylinder seat; 14. second cylinder seat; 15. first cylinder; 16. second cylinder; 17. limit plate; 18. floating joint; 19. cylinder fixing hole; 20. notch; 21. locking hole; 22. forming drum; 23. pre-folding part; 24. first sliding sleeve; 25. second sliding sleeve; 26. extrusion roller; 27. fixing bolt. DETAILED DESCRIPTION
[0026] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.
[0027] like Figure 1 , Figure 2 As shown: a straightening device for a curtain yarn forming drum (hereinafter referred to as the straightening device), including a long strip plate-shaped base 1, the entire straightening device is fixed by the base 1, and two straightening mechanisms are arranged on the upper part of the base 1, including a first straightening mechanism 2 and a second straightening mechanism 3, the first straightening mechanism 2 and the second straightening mechanism 3 include slide rails 4 fixedly installed at both ends of the base 1 respectively, and a slider 5 slidably sleeved on the slide rail 4, a connecting bracket 6 is vertically fixedly installed on the upper surface of the slider 5 near the outer end, an L-shaped roller bracket 7 is horizontally fixedly installed on the connecting bracket 6, a fixed end 71 of the roller bracket 7 is connected to the connecting bracket 6, and a roller 8 is rotatably installed on the free end 72 of the roller bracket 7 (i.e., the end away from the connecting bracket 6), the free ends 72 on the first straightening mechanism 2 and the second straightening mechanism 3 are opposite to each other so that one end of the two rollers 8 are close to each other, and the first straightening mechanism 2 and the second straightening mechanism 3 are slidably connected to the base 1 through the slide rail 4 and the slider 5, so that the relative position between the two rollers 8 can be adjusted. The roller 8 is made of nylon to prevent the curtain yarn 9 from being scratched during the straightening process.
[0028] An adjusting device is also provided between the first straightening mechanism 2 and the second straightening mechanism 3, and the adjusting device includes a screw rod 10, a guide rod 11, a hand wheel 12, two sleeves (including a first sleeve 24 and a second sleeve 25), two cylinder seats (including a first cylinder seat 13 and a second cylinder seat 14), and two cylinders (including a first cylinder 15 and a second cylinder 16); the screw rod 10 and the guide rod 11 are arranged in parallel, and both ends are rotatably connected to the limit plate 17. The hand wheel 12 is fixedly connected to one end of the screw rod 10. The screw rod 10 has a two-section thread, including a forward-turning thread and a reverse-turning thread. The rotation directions of the two sections of the thread are opposite. The first sleeve 24 is threadedly connected to the forward-turning thread section of the screw rod 10, and the second sleeve 25 is threadedly connected to the reverse-turning thread section of the screw rod 10. The first sleeve 24 and the second sleeve 25 are also slidably connected to the guide rod 11. The screw rod 10 is rotated forward or reversely by rotating the handwheel forward or reversely. The rotation of the screw rod 10 drives the first sleeve 24 and the second sleeve 25 on the screw rod 10 to move away from or closer to each other. The guide rod 11 prevents the first sleeve 24 and the second sleeve 25 from rotating with the screw rod 10.
[0029] like Figure 1 , Figure 3As shown: the upper end of the first cylinder seat 13 is fixedly connected to the lower end of the first sliding sleeve 24, and the upper end of the second cylinder seat 14 is fixedly connected to the lower end of the second sliding sleeve 25; the first cylinder seat 13 and the second cylinder seat 14 are respectively provided with a cylinder fixing hole 19, and the cylinder fixing hole 19 is provided with a notch 20, so that the cylinder fixing hole 19 is formed into two halves, and a locking hole 21 is provided between the two halves of the cylinder fixing hole 19; the cylinder body of the first cylinder 15 is installed in the cylinder fixing hole 19 of the first cylinder seat 13, and the bolts pass through the locking holes 21 to connect the two halves of the cylinder fixing hole 19 close to each other, so as to fix the cylinder body of the first cylinder 15; the second cylinder 16 is installed in the cylinder fixing hole 19 of the second cylinder seat 14, and the bolts pass through the locking holes 21 to fix the cylinder body of the second cylinder 16. The cylinder shaft of the first cylinder 15 is connected to the slider 5 of the first straightening mechanism 2, and the cylinder shaft of the second cylinder 16 is connected to the slider 5 of the second straightening mechanism 3. The position changes of the first straightening mechanism 2 and the second straightening mechanism 3 are controlled by extending and retracting the cylinder shafts of the first cylinder 15 and the second cylinder 16.
[0030] A floating joint 18 is also provided between the cylinder shaft of the first cylinder 15 and the slider 5 of the first straightening mechanism 2, and a floating joint 18 is also provided between the cylinder shaft of the second cylinder 16 and the slider 5 of the second straightening mechanism 3. The floating joint 18 is used to eliminate the error between the cylinder and the slider 5, so that the first cylinder 15 and the second cylinder 16 can run more smoothly.
[0031] like Figure 4 As shown: the straightening device is arranged on one side of the rotating surface of the forming drum 22, the rollers 8 of the first straightening mechanism 2 and the second straightening mechanism 3 are respectively located at the left and right ends of the forming drum 22, the forming drum 22 rotates to make the curtain yarn 9 fit on its outer surface, the two ends of the curtain yarn 9 are not fitted on the forming drum, thereby forming a pre-folded part 23, and the rollers 8 of the first straightening mechanism 2 and the second straightening mechanism 3 are in rotational contact with the inner surface of the pre-folded part 23; Figure 7 As shown, the extrusion roller 26 is axially parallel to the forming drum 22, and the straightening device is located on the same side of the forming drum 22. During the rotation of the forming drum 22, the extrusion roller is close to the forming drum under the action of the power mechanism and fits on the curtain yarn 9 to smooth the curtain yarn 9. At the same time, it cooperates with the two rollers 8 to straighten the pre-folded part 23 of the curtain yarn 9 to avoid wrinkles in this part.
[0032] Specific usage method: The straightening device includes a position adjustment state and a working state. The position is adjusted according to the size of the curtain layer required by the raw tire in the position adjustment state. During the position adjustment, the cylinder shafts of the first cylinder 15 and the second cylinder 16 are in a contracted state. The screw rod 10 is rotated by manually turning the hand wheel 12. The screw rod 10 drives the first sleeve 24 and the second sleeve 25 to be relatively close or away, driving the first cylinder seat 13, the second cylinder seat 14, the first cylinder 15, and the second cylinder 16 to move. The first cylinder 15 and the second cylinder 16 push or pull the first straightening mechanism 2 and the second straightening mechanism 3 to move on the slide rail 4, so as to adjust the position between the rollers 8 on the first straightening mechanism 2 and the second straightening mechanism 3 until the two rollers 8 are respectively attached to the pre-folded parts 23 of the curtain yarn 9.
[0033] After the above position adjustment state is completed, it enters the working state, and the curtain yarn 9 is wound onto the forming drum 22. During the winding process, the forming drum 22 and the extrusion roller 26 cooperate to extrude the curtain yarn 9 to make the multiple layers of curtain yarn fit better. At the same time, the two rollers 8 fit with the pre-folded parts 23 at both ends of the curtain yarn 9 respectively, and move with the rotation of the curtain yarn 9 until the number of layers of the curtain yarn 9 on the forming drum 22 meets the set requirements. The forming drum 22 and the extrusion roller 26 stop rotating. The extrusion roller 26 leaves the forming drum 22 under the action of the power mechanism to avoid interfering with the subsequent reverse folding work of the pre-folded part of the curtain yarn. At the same time, the cylinder shafts of the first cylinder 15 and the second cylinder 16 extend out to push the rollers 8 of the first straightening mechanism 2 and the second straightening mechanism 3 away from the pre-folded part 23 of the curtain yarn 9. The air bags at the left and right ends of the forming drum 22 fit with the left and right ends of the forming drum 22, the air bags are inflated and squeeze the two sides of the curtain yarn 9 to fold the pre-folded part 23 in reverse (reference Figure 4 After the above actions are completed, the airbag shrinks and the folded curtain yarn can be removed from the forming drum for subsequent processing.
[0034] Although the utility model is described herein with reference to the illustrative embodiments of the utility model, it should be understood that those skilled in the art can design many other modifications and implementations, which will fall within the scope and spirit of the principles disclosed in the present application. More specifically, within the scope disclosed in the present application, multiple variations and improvements can be made to the components and / or layout of the subject combination layout. In addition to the variations and improvements made to the components and / or layout, other uses will also be obvious to those skilled in the art.
Claims
1. A straightening device for a curtain yarn forming drum, characterized in that: The invention comprises a base (1), wherein two straightening mechanisms are arranged on the upper part of the base (1), and the two straightening mechanisms are slidably arranged on both sides of the base (1). An adjusting device is also arranged on the upper part of the base (1), and the adjusting device comprises a screw rod (10), a guide rod (11), a hand wheel (12), a first cylinder (15), and a second cylinder (16). The hand wheel (12) is fixedly connected to one end of the screw rod (10), and the screw rod (10) has a two-section thread, comprising a forward-spinning thread and a reverse-spinning thread. The first cylinder (15) is threadedly connected to the forward-spinning thread section of the screw rod (10), and the second cylinder (16) is threadedly connected to the reverse-spinning thread section of the screw rod (10). The first cylinder (15) and the second cylinder (16) are also respectively slidably connected to the guide rod (11), and the cylinder shafts of the first cylinder (15) and the second cylinder (16) are respectively connected to one of the straightening mechanisms.
2. The straightening device for the curtain yarn forming drum according to claim 1, characterized in that: The adjusting device further comprises a first sliding sleeve (24) and a second sliding sleeve (25); the first sliding sleeve (24) is threadedly connected to the forward-spinning thread section of the screw rod (10); the second sliding sleeve (25) is threadedly connected to the reverse-spinning thread section of the screw rod (10); the first sliding sleeve (24) and the second sliding sleeve (25) are also slidably connected to the guide rod (11); the cylinder body of the first cylinder (15) is connected to the first sliding sleeve (24); and the cylinder body of the second cylinder (16) is connected to the second sliding sleeve (25).
3. The straightening device for the curtain yarn forming drum according to claim 2 is characterized in that: The first sliding sleeve (24) is connected to the first cylinder (15) via a first cylinder seat (13), and the second sliding sleeve (25) is connected to the second cylinder (16) via a second cylinder seat (14).
4. The straightening device for the curtain yarn forming drum according to claim 3 is characterized in that: The first cylinder seat (13) and the second cylinder seat (14) are respectively provided with a cylinder fixing hole (19), the cylinder fixing hole (19) is provided with a notch (20), and a locking hole (21) is provided between the two halves of the cylinder fixing hole (19); the cylinder bodies of the first cylinder (15) and the second cylinder (16) are respectively installed in the cylinder fixing holes (19) of the first cylinder seat (13) and the second cylinder seat (14), and bolts are passed through the locking holes (21) for fixing.
5. The straightening device for the curtain yarn forming drum according to claim 1, characterized in that: The two ends of the screw rod (10) and the guide rod (11) are rotatably connected to the limiting plate (17) respectively.
6. The straightening device for the curtain yarn forming drum according to claim 1, characterized in that: The two righting mechanisms comprise a first righting mechanism (2) and a second righting mechanism (3). The first righting mechanism (2) and the second righting mechanism (3) comprise slide rails (4) respectively fixedly mounted on two ends of the base (1), a slider (5) slidably sleeved on the slide rails (4), a connecting bracket (6) vertically fixedly mounted on the upper surface of the slider (5) near the outer end, an L-shaped roller bracket (7) horizontally fixedly mounted on the connecting bracket (6), a fixed end (71) of the roller bracket (7) being connected to the connecting bracket (6), a roller (8) being rotatably mounted on the free end (72) of the roller bracket (7), and the free ends (72) on the first righting mechanism (2) and the second righting mechanism (3) facing each other.
7. The straightening device for the curtain yarn forming drum according to claim 6, characterized in that: The cylinder shaft of the first cylinder (15) is connected to the slider (5) of the first straightening mechanism (2), and the cylinder shaft of the second cylinder (16) is connected to the slider (5) of the second straightening mechanism (3).
8. The straightening device for the curtain yarn forming drum according to claim 7, characterized in that: The roller (8) is made of nylon.
9. The straightening device for the curtain yarn forming drum according to claim 7, characterized in that: The cylinder shaft of the first cylinder (15) is connected to the slider (5) of the first straightening mechanism (2) via a floating joint (18), and the cylinder shaft of the second cylinder (16) is connected to the slider (5) of the second straightening mechanism (3) via a floating joint (18).
10. The straightening device for the curtain yarn forming drum according to claim 1, characterized in that: The straightening device is arranged on one side of the rotating surface of the forming drum (22) and is parallel to the axial direction of the forming drum (22). The rollers (8) of the first straightening mechanism (2) and the second straightening mechanism (3) are respectively located on both sides of the forming drum (22).