Multi-face warp knitting fabric printing mechanism

Abstract

The invention discloses a multi-face warp knitting fabric printing mechanism, and belongs to the field of fabric printing. Comprising a box body, and two printing devices are arranged in the box body; a drying mechanism is arranged on the right side in the box body; the two sides of the box body are each provided with a folding and unfolding mechanism. The printing device comprises a rotating rod, a guide rod and a printing machine body, the two ends of the rotating rod are rotationally connected with the front portion of the interior of the box body through rotating shafts, the two ends of the guide rod are fixedly connected with the rear portion of the interior of the box body, and two spiral grooves are integrally formed in the outer side wall of the rotating rod; the outer side wall of the rotating rod is sleeved with two spiral sleeves, and the spiral grooves are matched with the spiral sleeves. And in the process that the first gear is shifted by the first arc-shaped rack, the two up-down opposite printing machine bodies can be controlled to be close to each other, then printing can be conducted on the fabric penetrating through the space between the two printing machine bodies, and the double-face printing effect is achieved.

Description

Technical Field

[0001] The invention relates to the field of fabric printing, in particular to a multi-faceted warp knitted fabric printing mechanism. Background Art

[0002] The fabric printing process includes steps such as fabric pretreatment, fabric printing, washing, straightening and drying to form the fabric. The fabric printing process enables the pattern on the outer surface of the fabric to have functions such as personalized pattern design, thereby meeting the needs of making clothes of different styles.

[0003] Patent: CN212889404U discloses a textile fabric printing device, which relates to the technical field of textile production and processing. The textile fabric printing device includes a box body, on which a lifting and lowering mechanism is provided, and the box body is a hollow structure with an opening at the top, and a mounting cover is hingedly installed at the top opening of the box body, and a first printing machine and a second printing machine are provided inside the box body, and the first printing machine and the second printing machine are symmetrically distributed, and a fixing rod is fixedly installed on the bottom outer surface of the mounting cover. The textile fabric printing device, the box body open-cover structural design and the setting of the winding roller solve the problem of retracting and releasing the textile before and after printing, and reduce the labor intensity of the operator. With the continuous up and down stamping printing effect achieved by the bidirectional threaded rod and the servo motor and the stepping traction effect of the stepping motor, it can realize the function of continuous printing on textiles, and improve the efficiency and quality of the printing of the device;

[0004] In the above technology, the first printing machine is controlled to rise and fall by a motor drive, and the second printing machine is fixed, so as to achieve double-sided printing of the fabric. In this method, the upper surface of the fabric being transmitted needs to always be in contact with the lower surface of the second printing machine, and the pigment is easily adhered during the transmission process. In the above technology, the fabric is continuously transmitted and dried through a fixed air outlet pipe. The drying time is short, resulting in poor drying effect, which easily leads to discoloration after winding, and needs to be improved. Summary of the Invention

[0005] Purpose of the invention: The purpose of the present invention is to provide a method in which the fabric in transmission is not easily adhered to the residual pigment during the previous printing; another purpose of the present invention is to provide a better drying effect.

[0006] Technical solution: A multi-faceted warp knitted fabric printing mechanism includes a box body, wherein two printing devices are arranged inside the box body;

[0007] A drying mechanism is provided on the right side of the interior of the box;

[0008] Both sides of the box are provided with a retractable mechanism;

[0009] The printing device includes a rotating rod, a guide rod and a printing machine body. The two ends of the rotating rod are rotatably connected to the front of the interior of the box through a rotating shaft. The two ends of the guide rod are fixedly connected to the rear of the interior of the box. The outer wall of the rotating rod is integrally formed with two spiral grooves. The outer wall of the rotating rod is provided with two spiral sleeves, and the spiral grooves are adapted to the spiral sleeves.

[0010] The outer side wall of the guide rod is slidably connected to two guide sleeves, the outer side wall of the spiral sleeve and the outer side wall of the guide sleeve are fixedly connected to a connecting piece 1, the opposite ends of the two connecting pieces 1 facing each other are rotatably connected to the support rod via a rotating shaft, the top of the support rod is rotatably connected to the connecting piece 2 via a rotating shaft, the connecting piece 2 is fixedly connected to the opposite side of the printing machine body, and a plurality of springs 1 are fixedly connected between the printing machine body and the box body;

[0011] A sprocket is fixedly connected to the left side of the outer side wall of the rotating rod, and the outer side walls of the two sprockets are jointly connected to a chain for transmission.

[0012] Furthermore, the right end of the rotating rod located at the lower interior of the box body passes through the right side of the box body and is fixedly connected to a gear 1. A motor 1 is fixedly connected to the right side of the box body near the gear. The left end of the output shaft of the motor 1 is fixedly connected to a dial 1. The outer side wall of the dial 1 is integrally formed with an arc-shaped rack 1, and the arc-shaped rack 1 is meshed with the gear 1.

[0013] Furthermore, both sides of the box body are provided with through-type material openings.

[0014] Furthermore, a door is mounted on the front surface of the box body via a hinge.

[0015] Furthermore, the drying mechanism includes a guide frame, the inner front of the guide frame is rotatably connected to a reciprocating screw through a rotating shaft, the outer wall of the reciprocating screw is threadedly connected to a transfer chamber, the bottom of the transfer chamber is integrally formed with multiple air outlet heads, the upper surface of the transfer chamber is fixedly connected to a ventilation hose, the top of the ventilation hose passes through the right side of the box body and is fixedly connected to a flange joint, and the outer side of the guide frame is fixedly connected to the inner side of the box body.

[0016] Furthermore, a limiting rod is slidably installed at the rear of the interior of the transfer chamber, and both ends of the limiting rod are fixedly connected to the inner sides of the guide frame respectively.

[0017] Furthermore, the right end of the reciprocating screw passes through the right side of the box body and is fixedly connected to gear 2. The right side of the box body is fixedly connected to motor 2 near gear 2. The left end of the output shaft of motor 2 is fixedly connected to dial plate 2. The outer side wall of dial plate 2 is integrally formed with an arc-shaped rack 2, and the arc-shaped rack 2 is meshed with gear 2.

[0018] Furthermore, the retracting and unfolding mechanism includes a U-shaped frame, which is fixedly connected to the opposite side of the box body, and the inner front surface of the U-shaped frame is rotatably connected to a rotating column via a rotating shaft, and the rear end of the rotating column is fixedly connected to a first resistance plate, and a pulling column is slidably installed on the inner rear surface of the U-shaped frame, and the front end of the pulling column is fixedly connected to a second resistance plate, and the outer wall of the pulling column is provided with a second spring, and the two ends of the second spring are respectively fitted with the opposite sides of the U-shaped frame and the second resistance plate, and a reel is clamped and installed between the first resistance plate and the second resistance plate facing each other.

[0019] Furthermore, the front end of the rotating column located on the right side of the box body is fixedly connected to gear three, the right side of the box body is fixedly connected to motor three near gear three, the front end of the output shaft of motor three is fixedly connected to dial plate three, the outer side wall of dial plate three is integrally formed with an arc-shaped rack three, and the outer side wall of the arc-shaped rack three is meshed with the outer side wall of gear three.

[0020] Beneficial effect: When the arc-shaped rack turns the gear, the two upper and lower printing machine bodies can be controlled to move closer to each other, and then the fabric passing through the two printing machine bodies can be printed, achieving a double-sided printing effect;

[0021] During the rotation of the second motor, the reciprocating screw can rotate intermittently, and the transfer chamber can move along the inner side of the guide frame. During the movement, it can stop briefly, so that when the hot air is ejected through the air outlet head, it can move back and forth with the transfer chamber to increase the drying range. During the repeated left and right movement, it stops and moves while discharging air, avoiding the problem in the prior art that the left and right reciprocating speed is too fast, resulting in the air blowing not being able to fully act on the surface of the fabric. This method achieves better drying effect.

[0022] Start motor three, and arc-shaped rack three can intermittently turn gear three to rotate, so that by turning gear three, the reel for winding the fabric is driven to rotate, and the fabric is wound, so that the other reel is pulled along with the fabric winding and rotates to unwind the fabric. This method allows the fabric to be intermittently wound and released, and cooperates with the relative back-to-back movement of the two printing machine bodies to achieve continuous printing. After the fabric is printed, when it stops intermittently, it can be jet-dried through multiple air outlet heads on the reciprocating transfer chamber; making the drying more complete, the fabric that has stopped winding is dried through the moving transfer chamber to ensure comprehensive drying. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a front view structural schematic diagram of the present invention;

[0024] Figure 2 It is a side structural schematic diagram of the present invention;

[0025] Figure 3 It is a schematic diagram of the internal structure of the present invention;

[0026] Figure 4 It is a structural schematic diagram of the printing mechanism of the present invention;

[0027] Figure 5 It is a structural schematic diagram of the drying mechanism of the present invention;

[0028] Figure 6 It is a side view structural diagram of the U-shaped frame of the present invention;

[0029] Figure 7 It is a side structural schematic diagram of the reel of the present invention.

[0030] In the figure: 1. Box body; 2. Printing device; 3. Drying mechanism; 4. Retracting and unretracting mechanism; 5. Gear 1; 6. Motor 1; 7. Toggle plate 1; 8. Curved rack 1; 9. Feed opening; 10. Box door; 201. Rotating rod; 202. Guide rod; 203. Printing machine body; 204. Spiral groove; 205. Spiral sleeve; 206. Guide sleeve; 207. Connecting piece 1; 208. Support rod; 209. Connecting piece 2; 210. Spring 1; 211. Sprocket; 212. Chain; 301. Guide frame; 30 2. Reciprocating screw; 303. Transfer chamber; 304. Air outlet; 305. Ventilation hose; 306. Flange joint; 307. Limit rod; 308. Gear 2; 309. Motor 2; 310. Toggle disk 2; 311. Arc rack 2; 401. U-shaped frame; 402. Rotating column; 403. Disc 1; 404. Pulling column; 405. Disc 2; 406. Spring 2; 407. Gear 3; 408. Motor 3; 409. Toggle disk 3; 410. Arc rack 3; 411. Reel. DETAILED DESCRIPTION

[0031] In order to make the technical solution of the present invention clearer, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0032] Example

[0033] like Figure 1 As shown, a multi-faceted warp knitted fabric printing mechanism is provided, comprising a box body 1, with through-type material openings 9 provided on both sides of the box body 1, and a box door 10 rotatably mounted on the front surface of the box body 1 via a hinge;

[0034] The material opening 9 on the left side of the box body 1 is convenient for inserting fabrics, and the material opening 9 on the right side of the box body 1 is convenient for removing fabrics, which is convenient for inserting and removing fabrics. The box door 10 can be opened, which is convenient for opening the box door 10 when putting in fabrics and operating inside the box body 1.

[0035] like Figure 2 、 Figure 3 and Figure 4 As shown, two printing devices 2 are provided inside the box 1;

[0036] The printing device 2 includes a rotating rod 201, a guide rod 202, and a printing machine body 203. The two ends of the rotating rod 201 are rotatably connected to the front of the interior of the box 1 via a rotating shaft. The two ends of the guide rod 202 are fixedly connected to the rear of the interior of the box 1. The outer wall of the rotating rod 201 is integrally formed with two spiral grooves 204. The outer wall of the rotating rod 201 is provided with two spiral sleeves 205. The spiral grooves 204 are adapted to the spiral sleeves 205.

[0037] Two guide sleeves 206 are slidably connected to the outer wall of the guide rod 202. The outer wall of the spiral sleeve 205 and the outer wall of the guide sleeve 206 are fixedly connected to a connecting piece 1 207. The opposite ends of the two front and rear connecting pieces 1 207 are rotatably connected to support rods 208 via a rotating shaft. The top end of the support rod 208 is rotatably connected to a connecting piece 209 via a rotating shaft. The connecting piece 209 is fixedly connected to the opposite side of the printing machine body 203. A plurality of springs 1 210 are fixedly connected between the printing machine body 203 and the housing 1.

[0038] A sprocket 211 is fixedly connected to the left side of the outer wall of the rotating rod 201, and a chain 212 is commonly connected to the outer walls of the two sprockets 211;

[0039] The right end of the rotating rod 201 located at the lower interior of the housing 1 extends through the right side of the housing 1 and is fixedly connected to a gear 1-5. A motor 1-6 is fixedly connected to the right side of the housing 1 near the gear 1-5. The left end of the output shaft of the motor 1-6 is fixedly connected to a dial 1-7. The outer wall of the dial 1-7 is integrally formed with an arc-shaped rack 1-8, which is meshed with the gear 1-5.

[0040] The arc-shaped rack 8 is a small-segment rack. When the motor 6 is started and the dial 7 is driven to rotate, the arc-shaped rack 8 intermittently drives the gear 5 to rotate.

[0041] When gear 1 5 rotates, it drives the rotating rod 201 at the bottom of the box body 1 to rotate. Under the meshing transmission of sprocket 1 211 and chain 212, the rotating rod 201 at the top of the box body 1 also rotates.

[0042] During the rotation of the rotating rod 201, the spiral sleeve 205 is adapted to the spiral groove 204 and is spirally connected, so that the spiral sleeve 205 can slide along the outer wall of the rotating rod 201. At this time, the guide sleeve 206 also slides along the outer wall of the guide rod 202.

[0043] Therefore, when the arc-shaped rack 8 turns the gear 5, the two left and right opposite spiral sleeves 205 will move relative to each other. At this time, the support rod 208 can gradually change from an inclined state to a vertical state because the top and bottom ends are respectively connected by the connecting piece 1 207 and the connecting piece 209, thereby controlling the two upper and lower opposite printing machine bodies 203 to move closer to each other, and then the fabric passing through the two printing machine bodies 203 can be printed, achieving a double-sided printing effect.

[0044] When the arc-shaped rack-8 rotates with the motor-6 and disengages from the outer wall of the gear-5, the two printing machine bodies 203 will move away from each other under the pull of the spring-1 210. At this time, the spiral sleeve 205 and the guide sleeve 206 will move and reset along the rotating rod 201 and the guide rod 202 respectively, so that when the arc-shaped rack-8 is subsequently engaged with the gear-5, the printing machine body 203 is controlled to move and print. The rigid mode is to continuously rotate the driving motor-6 so that the two printing machine bodies 203 repeatedly move away from each other, thereby achieving the effect of continuous double-sided printing on the fabric being transmitted.

[0045] like Figure 1 、 Figure 2 and Figure 5 As shown, a drying mechanism 3 is provided on the right side of the interior of the box 1;

[0046] The drying mechanism 3 includes a guide frame 301. A reciprocating screw 302 is rotatably connected to the inner front of the guide frame 301 via a rotating shaft. The outer wall of the reciprocating screw 302 is threadedly connected to a transfer chamber 303. A plurality of air outlets 304 are integrally formed at the bottom of the transfer chamber 303. A ventilation hose 305 is fixedly connected to the upper surface of the transfer chamber 303. The top end of the ventilation hose 305 extends to the right side of the box body 1 and is fixedly connected to a flange joint 306. The outer side of the guide frame 301 is fixedly connected to the inner side of the box body 1.

[0047] A limit rod 307 is slidably installed at the rear of the transfer chamber 303, and both ends of the limit rod 307 are fixedly connected to the inner sides of the guide frame 301 respectively;

[0048] The right end of the reciprocating screw 302 passes through the right side of the box body 1 and is fixedly connected to the second gear 308. The right side of the box body 1 is fixedly connected to the second motor 309 near the second gear 308. The left end of the output shaft of the second motor 309 is fixedly connected to the second dial 310. The outer wall of the second dial 310 is integrally formed with the second arc rack 311, which is meshed with the second gear 308.

[0049] The arc-shaped rack 2 311 is a small-segment rack. During the rotation of the motor 2 309, it will drive the toggle plate 2 310 to rotate, and then the arc-shaped rack 2 311 can intermittently toggle the gear 2 308 to rotate, so that the reciprocating screw 302 can rotate intermittently. During the rotation of the reciprocating screw 302, under the limit of the limit rod 307, the transfer chamber 303 can move along the inner side of the guide frame 301, and can stop for a short time when moving. Therefore, when the hot air is ejected through the air outlet head 304, it can increase the drying range as the transfer chamber 303 moves back and forth left and right. At the same time, during the repeated left and right movement, the air can be discharged while stopping and moving, avoiding the problem in the prior art that the left and right reciprocating movement speed is too fast, resulting in the blowing not being able to fully act on the surface of the fabric. This method achieves a better drying effect.

[0050] like Figure 1 、 Figure 2 、 Figure 3 、 Figure 6 and Figure 7 As shown, both sides of the box body 1 are provided with a retractable mechanism 4;

[0051] The retracting and unfolding mechanism 4 includes a U-shaped frame 401, which is fixedly connected to the opposite side of the box body 1. The inner front surface of the U-shaped frame 401 is rotatably connected to a rotating column 402 via a rotating shaft. The rear end of the rotating column 402 is fixedly connected to a first plate 403. A pulling column 404 is slidably installed on the inner rear surface of the U-shaped frame 401. The front end of the pulling column 404 is fixedly connected to a second plate 405. The outer wall of the pulling column 404 is provided with a second spring 406. The two ends of the second spring 406 are respectively fitted with the opposite sides of the U-shaped frame 401 and the second plate 405. A reel 411 is mounted between the first plate 403 and the second plate 405 facing each other.

[0052] A gear 3 407 is fixedly connected to the front end of the rotating column 402 located on the right side of the housing 1. A motor 3 408 is fixedly connected to the right side of the housing 1 near the gear 3 407. The front end of the output shaft of the motor 3 408 is fixedly connected to a toggle plate 3 409. The outer wall of the toggle plate 3 409 is integrally formed with an arc-shaped rack 3 410. The outer wall of the arc-shaped rack 3 410 is meshed with the outer wall of the gear 3 407.

[0053] The retracting and releasing mechanism 4 located on the left side of the box body 1 is used for passively releasing the fabric, and the retracting and releasing mechanism 4 located on the right side of the box body 1 is used for actively retracting the fabric;

[0054] The two reels 411 are used for unwinding and winding respectively, and are easy to disassemble and install. By pulling the handheld pulling column 404, the second plate 405 can be moved to remove the reel 411.

[0055] The arc-shaped rack three 410 is a small-segment rack. When the motor three 408 is started and the control dial three 409 is rotated, the arc-shaped rack three 410 can intermittently toggle the gear three 407 to rotate, thereby toggling the gear three 407 to rotate, driving the reel 411 for winding the fabric to rotate, winding the fabric, so that the other reel 411 is pulled along with the fabric winding and rotates to unwind the fabric. This method allows the fabric to be intermittently wound and released, and cooperates with the two printing machine bodies 203 to move relative to each other to achieve continuous printing. After the fabric is printed, when it stops intermittently, it can be dried by jetting through the multiple air outlet heads 304 on the reciprocating transfer chamber 303; this makes the drying more complete, and the fabric that has stopped winding is dried by the moving transfer chamber 303 to ensure comprehensive drying.

[0056] By setting the starting time of motor 1 6 and motor 3 408, when motor 1 6 drives the two printing machine bodies 203 to move relative to each other for printing, motor 3 408 drives the movable arc rack 3 410 to just disengage from gear 3 407, ensuring that the fabric stops, thereby ensuring the accurate printing position;

[0057] When the two printing machine bodies 203 move away from each other, the arc-shaped rack three 410 is engaged with the gear three 407 to reel the fabric, so as to facilitate subsequent printing on the next position of the fabric.

[0058] The above-described embodiments merely illustrate several implementations of the present invention, and while their descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that a person skilled in the art would be able to make numerous variations and improvements without departing from the spirit of the present invention, all of which fall within the scope of protection of the present invention. Therefore, the scope of protection of the present invention shall be determined by the appended claims.

Claims

1. A multi-faceted warp knitted fabric printing mechanism, comprising a housing (1), characterized in that: Two printing devices (2) are provided inside the box (1); A drying mechanism (3) is provided on the right side of the interior of the box (1); Both sides of the box body (1) are provided with a retractable mechanism (4); The printing device (2) comprises a rotating rod (201), a guide rod (202) and a printing machine body (203); the two ends of the rotating rod (201) are rotatably connected to the front of the interior of the box (1) via a rotating shaft; the two ends of the guide rod (202) are fixedly connected to the rear of the interior of the box (1); the outer wall of the rotating rod (201) is integrally formed with two spiral grooves (204); the outer wall of the rotating rod (201) is sleeved with two spiral sleeves (205); the spiral grooves (204) are adapted to the spiral sleeves (205); The outer side wall of the guide rod (202) is slidably connected to two guide sleeves (206), the outer side wall of the spiral sleeve (205) and the outer side wall of the guide sleeve (206) are fixedly connected to a connecting piece (207), the opposite ends of the two connecting pieces (207) facing each other are rotatably connected to a support rod (208) via a rotating shaft, the top end of the support rod (208) is rotatably connected to a connecting piece (209) via a rotating shaft, the connecting piece (209) is fixedly connected to the opposite side of the printing machine body (203), and a plurality of springs (210) are fixedly connected between the printing machine body (203) and the box (1); A sprocket (211) is fixedly connected to the left side of the outer side wall of the rotating rod (201), and the outer side walls of the two sprockets (211) are jointly connected to a chain (212).

2. The multi-surface warp knitted fabric printing mechanism according to claim 1, characterized in that: The right end of the rotating rod (201) located at the lower interior of the box (1) passes through the right side of the box (1) and is fixedly connected to a gear (5). The right side of the box (1) is fixedly connected to a motor (6) near the gear (5). The left end of the output shaft of the motor (6) is fixedly connected to a dial (7). The outer wall of the dial (7) is integrally formed with an arc-shaped rack (8), and the arc-shaped rack (8) is meshed with the gear (5).

3. The multi-surface warp knitted fabric printing mechanism according to claim 1, characterized in that: Both sides of the box body (1) are provided with through-type material openings (9).

4. The multi-surface warp knitted fabric printing mechanism according to claim 1, characterized in that: A door (10) is rotatably mounted on the front surface of the box body (1) via a hinge.

5. The multi-surface warp knitted fabric printing mechanism according to claim 1, characterized in that: The drying mechanism (3) comprises a guide frame (301), the inner front of the guide frame (301) is rotatably connected to a reciprocating screw (302) via a rotating shaft, the outer wall of the reciprocating screw (302) is threadedly connected to a transfer chamber (303), the bottom of the transfer chamber (303) is integrally formed with a plurality of air outlet heads (304), the upper surface of the transfer chamber (303) is fixedly connected to a ventilation hose (305), the top end of the ventilation hose (305) passes through the right side of the box body (1) and is fixedly connected to a flange joint (306), and the outer side of the guide frame (301) is fixedly connected to the inner side of the box body (1).

6. The multi-surface warp knitted fabric printing mechanism according to claim 5, characterized in that: A limiting rod (307) is slidably installed at the rear of the interior of the transfer chamber (303), and both ends of the limiting rod (307) are fixedly connected to the inner sides of the guide frame (301) respectively.

7. The multi-surface warp knitted fabric printing mechanism according to claim 5, characterized in that: The right end of the reciprocating screw rod (302) passes through the right side of the box body (1) and is fixedly connected to the second gear (308). The right side of the box body (1) is fixedly connected to the second motor (309) near the second gear (308). The left end of the output shaft of the second motor (309) is fixedly connected to the second dial (310). The outer wall of the second dial (310) is integrally formed with an arc-shaped rack (311). The arc-shaped rack (311) is meshed with the second gear (308).

8. The multi-surface warp knitted fabric printing mechanism according to claim 1, characterized in that: The retracting and unfolding mechanism (4) comprises a U-shaped frame (401), the U-shaped frame (401) is fixedly connected to the opposite side of the box body (1), the inner front surface of the U-shaped frame (401) is rotatably connected to a rotating column (402) via a rotating shaft, the rear end of the rotating column (402) is fixedly connected to a first contact plate (403), the inner rear surface of the U-shaped frame (401) is slidably mounted with a pulling column (404), the front end of the pulling column (404) is fixedly connected to a second contact plate (405), the outer wall of the pulling column (404) is provided with a second spring (406), the two ends of the second spring (406) are respectively fitted with the opposite sides of the U-shaped frame (401) and the second contact plate (405), and a reel (411) is mounted between the first contact plate (403) and the second contact plate (405) facing each other.

9. The multi-surface warp knitted fabric printing mechanism according to claim 8, characterized in that: The front end of the rotating column (402) located on the right side of the box body (1) is fixedly connected to a gear three (407), the right side of the box body (1) is fixedly connected to a motor three (408) near the gear three (407), the front end of the output shaft of the motor three (408) is fixedly connected to a toggle plate three (409), the outer side wall of the toggle plate three (409) is integrally formed with an arc-shaped rack three (410), and the outer side wall of the arc-shaped rack three (410) is meshed with the outer side wall of the gear three (407).

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