Main shaft mechanism and water cloth winding and unwinding machine

Abstract

The utility model discloses a main shaft mechanism and a water cloth wrapping and unwrapping machine with the main shaft mechanism, and belongs to the technical field of water cloth wrapping and unwrapping of rubber hoses. The main shaft mechanism comprises a main shaft assembly and a bearing seat which is arranged outside the main shaft assembly in a sleeving mode and is rotationally connected with the main shaft assembly; the tension belt wheel is rotationally connected with the bearing seat; wherein the main shaft assembly is fixedly connected with a mounting main plate, one side of the mounting main plate is rotatably connected with a pinion shaft, and the other side of the mounting main plate is fixedly connected with an angle adjusting rod assembly; the water cloth sleeve seat is rotationally connected with the main shaft assembly; the tension belt wheel drives the water cloth sleeve seat to rotate through the small gear shaft, the end, located on the tension belt wheel, of the main shaft assembly is fixedly connected with a cloth guide sleeve provided with a notch, the cloth guide sleeve is used for winding and unwinding water cloth, and the water cloth winding machine has the advantages of being stable in operation, small in vibration and noise and beneficial to improving production efficiency.

Description

Technical Field

[0001] This utility model relates to the field of hose unwinding and water-resistant cloth technology, and in particular to a main shaft mechanism and a hose unwinding and water-resistant cloth machine having the main shaft mechanism. Background Technology

[0002] The main purpose of wrapping rubber hoses with waterproof cloth is to protect the quality and performance of the hoses during the vulcanization process. The waterproof cloth wrapping machine precisely wraps a special waterproof cloth around the hose, ensuring that each part receives proper protection and heat transfer, thereby maintaining a uniform distribution of temperature and pressure during vulcanization.

[0003] The water-weaving cloth winding and unwinding machine mainly consists of a water-weaving cloth winding and unwinding machine head and a traction device. The water-weaving cloth winding and unwinding machine head is located in the middle, with traction machines installed at the front and rear. The traction machines can pull forward or backward. When winding cloth, the traction device drives the rubber hose to pull forward (backward), and the water-weaving cloth winding and unwinding machine head drives the water-weaving cloth to rotate around the rubber hose, thereby realizing the water-weaving cloth winding and unwinding onto the rubber hose. Due to the unreasonable design of traditional water-weaving cloth winding and unwinding machines, and because users' product demands are increasing with technological development, traditional water-weaving cloth winding and unwinding machines face the problem that their production capacity cannot keep up with actual needs, resulting in low productivity. Moreover, they are unstable during operation, with large vibrations and noise, which can easily lead to safety accidents.

[0004] Therefore, based on the above problems, how to provide a main shaft mechanism and a water-winding and unwinding machine having the main shaft mechanism has become an important technical problem that needs to be solved by those skilled in the art. Utility Model Content

[0005] The purpose of this utility model is to overcome the defects of the existing technology and provide a main shaft mechanism with high production efficiency, stable operation and low noise, as well as a water-winding and unwinding machine with the main shaft mechanism.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] The spindle mechanism disclosed in this utility model includes:

[0008] A spindle assembly, a bearing housing sleeved on the outside of and rotatably connected to the spindle assembly; and

[0009] The tension pulley is rotatably connected to the bearing housing;

[0010] The main spindle assembly is fixedly connected to a mounting plate, one side of which is rotatably connected to a pinion shaft, and the other side is fixedly connected to an angle adjustment rod assembly; it also includes...

[0011] The water cloth sleeve is rotatably connected to the main shaft assembly;

[0012] The tension pulley drives the water cloth sleeve to rotate via the pinion shaft. The main shaft assembly is fixedly connected to a guide cloth sleeve with a notch at the end of the tension pulley for unwinding the water cloth.

[0013] Furthermore, the bearing housing is fixed in position, while the main shaft assembly and the tension pulley are capable of rotating relative to the bearing housing.

[0014] Furthermore, in order to ensure smooth operation and noise reduction of the spindle mechanism, a tube passage is formed at the center of the spindle assembly, through which a rubber tube can pass. A spindle pulley is fixedly connected to one end of the spindle assembly, and the spindle pulley and the tension pulley are distributed on both sides of the bearing housing.

[0015] Furthermore, the main shaft assembly is fixedly connected to the mounting main board on the side of the tension pulley, and the pinion shaft is located on one side of the mounting main board and drives the tension pulley, and on the other side it drives the water cloth sleeve seat.

[0016] Furthermore, a gear portion is formed on one side of the pinion shaft, and a planetary gear is fixedly connected to the other side. The planetary gear is connected to the synchronous pulley of the water cloth sleeve fixedly connected to the water cloth sleeve seat for belt drive. A water baffle is fixedly connected to the synchronous pulley of the water cloth sleeve. The pinion shaft is connected to the tension pulley for belt drive through the gear portion.

[0017] Furthermore, brake discs are fixedly connected to both the main shaft pulley and the tension pulley.

[0018] Furthermore, one end of the spindle assembly is fixedly connected to a right-end flange of the spindle, and the guide sleeve is detachably fixed to the right-end flange of the spindle.

[0019] Furthermore, the main shaft assembly and the bearing housing, the bearing housing and the tension pulley, and the main shaft assembly and the water cloth sleeve are all rotatably connected by deep groove ball bearings.

[0020] Furthermore, the mounting motherboard is fixedly connected to a mounting base above the pinion shaft, and a proximity switch trigger surface and a guide rod are provided on the upper part of the mounting base.

[0021] The water-weaving and unwinding machine disclosed in this utility model includes a main unit and the main shaft mechanism described above.

[0022] In the above technical solution, the main shaft mechanism and the water-winding and unwinding machine having the main shaft mechanism provided by this utility model have the following advantages:

[0023] Compared with the prior art, the spindle mechanism designed in this utility model is stable in operation, with less vibration and noise, and the tension can be automatically adjusted. During the unwinding operation, the unwound water cloth is wound into a neater roll. During the winding operation, the winding pitch is stable, the tightness is consistent, the appearance is beautiful, and the product quality is improved. The maximum speed of the spindle can reach 1000 rpm, which effectively increases production efficiency. Attached Figure Description

[0024] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings.

[0025] Figure 1 This is a schematic diagram of the overall structure of the water-weaving and unwinding machine disclosed in this utility model;

[0026] Figure 2 This is a cross-sectional view AA of the water-weaving cloth unwinding machine disclosed in this utility model;

[0027] Figure 3 This is a sectional view of the main shaft mechanism disclosed in this utility model;

[0028] Figure 4 This is an enlarged view of the bearing seat position of the main shaft mechanism disclosed in this utility model;

[0029] Figure 5 This is an enlarged view of the mounting position of the main spindle mechanism disclosed in this utility model.

[0030] Explanation of reference numerals in the attached figures:

[0031] 1. Frame; 2. Spindle mechanism; 3. Servo motor assembly; 4. Brake seat; 5. Nylon sleeve; 6. Label tearing device; 7. Power distribution cabinet; 8. Spindle wheel cover; 9. Brake seat; 10. Main motor assembly; 11. Water receiving tray; 12. Side water receiving tray; 13. Baffle assembly; 15. Traction plate mounting bracket; 16. Soft core traction assembly; 17. Traction top cover plate;

[0032] 1601. Upper clamping part; 1602. Lower clamping part; 1603. Driver;

[0033] 2001. Main shaft pulley; 2002. Left end bearing cover of the main shaft; 2003. Main shaft assembly; 2004. Main shaft pulley retaining ring; 2005. Main shaft pulley positioning sleeve; 2006. Left flange of bearing housing; 2007. Brake disc; 2008. Bearing housing; 2009. Brake disc; 2010. Tension pulley; 2011. Right bearing cover of the main shaft; 2012. Angle rod assembly; 2013. Water cloth positioning sleeve; 2014. Water cloth sleeve seat; 2015. Right end flange of main shaft; 2016. Guide sleeve; 2017. Water-coated sleeve bearing spacer; 2018. Water-coated sleeve synchronous pulley; 2019. Mounting main board; 2020. Flat washer; 2021. Adjusting sleeve; 2022. Water baffle; 2023. Planetary gear; 2024. Fixed seat; 2025. Guide rod; 2026. Proximity switch trigger surface; 2027. Retaining ring; 2028. Inner and outer bearing spacers; 2029. Pinion shaft;

[0034] 2030, tension pulley bearing spacer; 2031, main shaft bearing spacer; 2032, main shaft pulley retaining ring; 2033, 2034, 2035, 2036, deep groove ball bearings. Detailed Implementation

[0035] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings.

[0036] Figure 1 This is a schematic diagram of the overall structure of the water-coating and uncoating machine;

[0037] A utility model discloses a spindle mechanism, comprising: a main unit, which includes a frame 1, a spindle mechanism 2, a traction mechanism, and a power distribution cabinet 7;

[0038] The frame 1 is used to support the spindle mechanism 2. The spindle mechanism 2 is fixedly connected to the frame 1 through the bearing seat 2008. The main motor assembly 10 is fixedly connected to one side of the frame 1. The main motor assembly 10 and the spindle assembly 2003 of the spindle mechanism 2 are driven by a belt to provide rotational power to the spindle assembly 2003. The upper part of the frame 1 is equipped with a servo motor assembly 3. The bearing seat 2008 of the spindle mechanism 2 is rotatably connected to a tension pulley 2010. The servo motor assembly 3 and the tension pulley 2010 are driven by a belt to provide rotational power to the tension pulley 2010.

[0039] The spindle assembly 2003 of the spindle mechanism 2 has a tube passage at its center through which a hose can pass. A mounting plate 2019 is fixedly connected to the spindle assembly 2003. A pinion shaft 2029 is rotatably connected to the edge of the mounting plate 2019. One end of the pinion shaft 2029 is driven by a tension pulley 2010, which drives the pinion shaft 2029 to rotate. A planetary gear 2023 is mounted on the other end of the pinion shaft 2029. A water cloth sleeve 2014 is rotatably connected to the spindle assembly 203 on the side of the planetary gear 2023. The water cloth sleeve 2014 is driven by the planetary gear 2023. The spindle assembly 2003... 3. A guide sleeve 2016 is fixedly connected to the end of the water cloth sleeve seat 2014. The guide sleeve 2016 has an opening for leading out the water cloth. An angle adjustment rod assembly 2012 is fixedly connected to the side of the main board 2019 opposite to the pinion shaft 2029. The angle adjustment rod assembly 2012 can form an inclined angle with the axis of the guide sleeve 2016 for pulling the water cloth. A water receiving tray 11 and a side water receiving tray 12 are arranged on the frame 1 below the angle adjustment rod assembly 2012. A braking device is also installed on the frame 1. The braking device brakes the main shaft assembly 2003 and the tension pulley 2010 through the brake seat 4 and the brake seat 9 respectively.

[0040] The traction mechanism is located at the guide sleeve 2016 end of the main shaft mechanism 2 on the frame 1. The traction mechanism pulls the rubber tube through the soft core traction assembly 16. The power distribution cabinet 7 is located on the side of the other end of the frame 1. The control system of the power distribution cabinet 7 is connected to the servo motor assembly 3, the main motor assembly 10 and the traction mechanism circuit. Among them, the frame 1 is fixed above the main motor assembly 10 with a nylon sleeve 5. The nylon sleeve 5 is coaxial with the tube passage of the main shaft mechanism 2 and is used to guide the rubber tube through. The frame 1 is provided with a transition nylon sleeve at the traction mechanism end. The rubber tube enters the soft core traction assembly 16 of the traction mechanism through the transition nylon sleeve.

[0041] The host also includes a label-tearing device 6 or a label-applying device;

[0042] The frame 1 of the main unit is equipped with a label tearing device 6 or a label application device on the side of the nylon sleeve 5 away from the main shaft mechanism 2. The main unit can be equipped with a label tearing device 6 or a label application device according to the usage requirements. In this embodiment, the label application device 6 is used as an example. The frame 1 is equipped with a main shaft wheel cover 8 at the position of the nylon sleeve 5. The frame 1 is fixedly connected to the baffle assembly 13 above the water receiving tray 11 and the side water receiving tray 12. A traction frame is provided at one end of the frame 1. A traction cover plate 17 is provided on the upper part of the traction frame. A stainless steel pull door assembly is provided on one side of the traction frame. A traction mechanism is arranged inside the traction frame. The traction mechanism has a soft core traction assembly 16 for pulling the rubber tube. The soft core traction assembly 16 is fixedly connected to the traction frame through the traction plate mounting bracket 15.

[0043] Figure 3 This is a sectional view of the main shaft mechanism of the water-coating and uncoating machine;

[0044] The spindle mechanism 2 includes a bearing housing 2008 that supports the spindle assembly 2003;

[0045] The bearing housing 2008 internally houses the spindle assembly 2003; see [link / reference]. Figure 4 As shown, the spindle assembly 2003 is rotatably connected to the bearing housing 2008 via two deep groove ball bearings 2033. A spindle bearing spacer 2031 is spaced between the two deep groove ball bearings 2033. A spindle pulley 2001 is fixedly connected to one end of the spindle assembly 2003. The spindle pulley 2001 drives the main motor assembly 10 to rotate. A spindle pulley positioning sleeve 2005 is fitted on the spindle assembly 2003 between the spindle pulley 2001 and the bearing housing 2008. A left end bearing cover 2002 is fitted on the outside of the spindle pulley positioning sleeve 2005. The left end bearing cover 2002 is fixedly connected to the bearing housing 2008. A left bearing housing flange 2006 is fitted on the outside of the bearing housing 2008. The bearing housing 2008 is fixedly connected to the frame 1 via the left bearing housing flange 2006.

[0046] Among them, a main shaft pulley retaining ring 2004 is provided on the outer side of the main shaft pulley 2001. The main shaft pulley retaining ring 2004 is fixedly connected to the main shaft assembly 2003. A main shaft pulley retaining ring 2032 is installed on the outer edge of the main shaft pulley 2001. A brake disc 2007 is fixedly connected to the inner side of the main shaft pulley 2001. The brake disc 2007 cooperates with the brake seat 4 to brake the rotation of the main shaft assembly 2003.

[0047] A tension pulley 2010 is fitted onto the bearing housing 2008 on the side away from the main shaft pulley 2001. The bearing housing 2008 is rotatably connected to the tension pulley 2010 via two deep groove ball bearings 2034. A tension pulley bearing spacer 2030 is provided between the two deep groove ball bearings 2034. A right bearing cover 2011 of the main shaft is fixedly connected to the end of the bearing housing 2008. A brake disc 2009 is fixedly connected to the side of the tension pulley 2010 away from the right bearing cover 2011 of the main shaft. The brake disc 2009 cooperates with the brake seat 9 to brake the rotation of the tension pulley 2010.

[0048] See Figure 3 , 5As shown, the main spindle assembly 2003 is fixedly connected to the mounting main plate 2019 on the right bearing cover 2011 side of the main spindle. An angle rod assembly 2012 is fixedly connected to one side of the edge of the mounting main plate 2019. The angle rod of the angle rod assembly 2012 is adjustable, forming an inclined angle with the axis of the main spindle assembly 2003. On the other side of the edge of the mounting main plate 2019, a pinion shaft 2029 is mounted via an adjusting sleeve 2021. The adjusting sleeve 2021 is rotatably connected to the pinion shaft 2029 via two deep groove ball bearings 2036. Inner and outer bearing spacers 2028 are spaced between the two deep groove ball bearings 2036. One end of the gear shaft 2029 is connected to the tension pulley 2010 for belt drive, and the tension pulley 2010 drives the pinion shaft 2029 to rotate. A retaining ring 2027 is installed on the outer edge of the gear part of the pinion shaft 2029. The other end of the pinion shaft 2029 is fixedly connected to a planetary gear 2023, and a flat washer 2020 prevents the planetary gear 2023 from disengaging from the pinion shaft 2029. The planetary gear 2023 is connected to the water cloth sleeve 2014 for belt drive. The mounting main board 2019 is located above the pinion shaft 2029 and is fixedly connected to a fixed seat 2024. A proximity switch trigger surface 2026 and a guide rod 2025 are provided on the upper part of the fixed seat 2024.

[0049] The spindle assembly 2003 is fitted with a water cloth sleeve 2014 on the side of the mounting motherboard 2019. The water cloth sleeve 2014 is rotatably connected to the spindle assembly 2003 via two deep groove ball bearings 2035. A water cloth sleeve bearing spacer 2017 is provided between the two deep groove ball bearings 2035. A water cloth sleeve synchronous pulley 2018 is fixedly connected to the outside of the water cloth sleeve 2014. The water cloth sleeve synchronous pulley 2018 is belt driven by the planetary gear 2023. A water baffle 2022 is fixedly connected to the side of the water cloth sleeve synchronous pulley 2018 away from the mounting motherboard 2019.

[0050] The main shaft assembly 2003 is located at the end of the water cloth sleeve seat 2014 and is fixedly connected to the guide cloth sleeve 2016 via the right end flange 2015 of the main shaft. The end of the guide cloth sleeve 2016 is a free end, and the outer wall of the guide cloth sleeve 2016 has a notch extending to its end.

[0051] See Figure 2 As shown;

[0052] The traction mechanism includes a soft core traction assembly 16, which is provided with an upper clamping part 1601 and a lower clamping part 1602, and a driver 1603 for driving the upper clamping part 1601 and the lower clamping part 1602 to clamp the hose.

[0053] A traction mechanism for the traction hose is provided between the upper clamping part 1601 and the lower clamping part 1602. The traction mechanism rotates and drags the hose under the drive of the traction power motor. The driver 1603 of the soft core traction assembly 16 is a cylinder, a manual drive mechanism, or a combination of a cylinder and a manual drive mechanism. The clamping part can be in the form of a synchronous belt, a multi-ribbed belt, or a rubber roller, etc. The traction power motor can be a single motor type or a dual motor type, etc.

[0054] In the above technical solution, the working principle of the water-weaving and unwinding machine provided by this utility model is as follows:

[0055] During operation, the hose passes through the tube passage (center hole) of the main spindle assembly 2003. The main motor of the main spindle assembly 10 drives the hose to rotate in the main spindle assembly 2003. The end of the water cloth wrapped on the hose passes through the notch of the guide sleeve 2016. As the guide sleeve 2016 rotates, the water cloth is separated from the hose. The hose itself does not rotate. The tension motor of the servo motor assembly 3 drives the tension pulley 2010 to provide tearing force for the separation of the water cloth to "unwrap the cloth". Along with the working angle rod assembly 2012 and the water cloth sleeve synchronous pulley 2018, the unwrapped water cloth is extended and guided again. With the speed-matched rotation of the water cloth sleeve seat 2014, it is rewrapped into a water cloth roll. Throughout the process, the hose moves forward under the action of the soft core traction assembly 16 of the traction mechanism.

[0056] The soft core traction assembly 16 clamps the soft core hose together through the upper clamping part 1601 and the lower clamping part 1602; the opening and closing of the upper and lower clamps is controlled by four cylinders; after the hose is clamped, as the traction power motor rotates, it drives the belts on the upper and lower clamping parts to rotate, and the belts drag the hose forward.

[0057] The process of wrapping and unwrapping the cloth is completely opposite. The main machine operates in the opposite direction, which means that the rolled water-absorbing cloth is wrapped around the rubber hose without water-absorbing cloth through the reverse operation of the main machine. Wrapping and unwrapping the water-absorbing cloth are two corresponding processes in the production of rubber hoses, which will not be described in detail here.

[0058] The marking strip is the carrier of the finished rubber hose manufacturer, trademark, specifications and other markings. Usually, the marking needs to be cured on the surface of the rubber hose. The marking strip can be understood as a combination of "transfer paper" and "marking". According to the manufacturer's production process, after the marking strip is glued to the surface of the rubber hose, it is wrapped in water cloth, heated and vulcanized and cured as a whole, and then the cloth is removed, and the useless "transfer paper" is torn off at the same time.

[0059] The label-tearing device is driven by a small motor. As the rubber tube moves after the cloth is unwound, the useless "transfer paper" is collected and rolled up. There is also a label-applying device. The label-applying and label-tearing devices are optional.

[0060] The braking device works in conjunction with the main shaft mechanism 2 through brake seat 4 and brake seat 9. The maximum speed of the main machine rotation reaches 1000 rpm. When the work is completed, or when a malfunction occurs or when human intervention is required, the rotating parts need to be stopped. The braking device is used to brake the main shaft assembly 2003 and the tension pulley 2010. The pneumatic brake locks the brake disc 2007 and brake disc 2009 of the main shaft assembly 2003 to achieve the braking effect.

[0061] Beneficial effects: The water-resistant cloth winding and unwinding machine operates stably with low vibration and noise, and the tension can be automatically adjusted. During the unwinding operation, the unwound water-resistant cloth is wound into a neater roll. During the winding operation, the winding pitch is stable, the tightness is consistent, the appearance is beautiful, and the product quality is improved. The maximum speed of the main shaft can reach 1000 rpm, which effectively increases production efficiency.

[0062] The above description only illustrates certain exemplary embodiments of the present invention. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A spindle mechanism (2), characterized in that, include: A spindle assembly (2003) and a bearing housing (2008) sleeved on the outside of the spindle assembly (2003) and rotatably connected thereto; as well as A tension pulley (2010) rotatably connected to the bearing housing (2008); The main spindle assembly (2003) is fixedly connected to a mounting plate (2019), one side of which is rotatably connected to a pinion shaft (2029), and the other side is fixedly connected to an angle adjustment rod assembly (2012); it also includes A water cloth sleeve (2014) rotatably connected to the main shaft assembly (2003); The tension pulley (2010) drives the water cloth sleeve seat (2014) to rotate via the pinion shaft (2029). The main shaft assembly (2003) is located at the end of the tension pulley (2010) and is fixedly connected to a guide cloth sleeve (2016) with a notch, which is used to unwind the water cloth.

2. The spindle mechanism (2) according to claim 1, characterized in that... ； The bearing housing (2008) is fixed in position, while the main shaft assembly (2003) and the tension pulley (2010) are capable of rotating relative to the bearing housing (2008).

3. The spindle mechanism (2) according to claim 1 or 2, characterized in that... ； The spindle assembly (2003) has a tube passage at its center, through which a hose can pass. One end of the spindle assembly (2003) is fixedly connected to a spindle pulley (2001). The spindle pulley (2001) and the tension pulley (2010) are distributed on both sides of the bearing housing (2008).

4. The spindle mechanism (2) according to claim 3, characterized in that... ； The main shaft assembly (2003) is fixedly connected to the mounting main plate (2019) on the side of the tension pulley (2010). The pinion shaft (2029) is located on one side of the mounting main plate (2019) and is driven by the tension pulley (2010), and on the other side it is driven by the water cloth sleeve (2014).

5. The spindle mechanism (2) according to claim 4, Its characteristics are: The pinion shaft (2029) has a gear section on one side and a planetary gear (2023) fixedly connected to the other side. The planetary gear (2023) is connected to the water cloth sleeve synchronous pulley (2018) fixedly connected to the water cloth sleeve seat (2014) for belt drive. A water baffle (2022) is fixedly connected to the water cloth sleeve synchronous pulley (2018). The pinion shaft (2029) is connected to the tension pulley (2010) for belt drive through the gear section.

6. The spindle mechanism (2) according to claim 5, characterized in that... ； Brake discs are fixedly connected to both the main shaft pulley (2001) and the tension pulley (2010).

7. The spindle mechanism (2) according to claim 1, characterized in that... ； One end of the spindle assembly (2003) is fixedly connected to the right end flange of the spindle, and the guide sleeve (2016) is detachably fixedly connected to the right end flange of the spindle.

8. The spindle mechanism (2) according to claim 1, characterized in that... ； The main shaft assembly (2003) and the bearing housing (2008), the bearing housing (2008) and the tension pulley (2010), and the main shaft assembly (2003) and the water cloth sleeve (2014) are all rotatably connected by deep groove ball bearings.

9. The spindle mechanism (2) according to claim 1, Its characteristics are: The mounting motherboard (2019) is fixedly connected to a mounting base (2024) above the pinion shaft (2029). A proximity switch trigger surface (2026) and a guide rod (2025) are provided on the upper part of the mounting base (2024).

10. A water-weaving cloth unwinding machine, characterized in that, Includes the host and the spindle mechanism as described in any one of claims 1-9.

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