Hydraulic drawing machine for air conditioner refrigeration copper pipe processing
By introducing cleaning, grinding, and cutting components into the hydraulic drawing machine, the problems of burrs and stains were solved, product quality and processing efficiency were improved, the mold was protected, and rapid cutting was achieved.
Patent Information
- Application Number
- CN202311569656.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2023-11-23
- Publication Date
- 2026-01-30
- Estimated Expiration
- 2043-11-23
AI Technical Summary
Existing hydraulic drawing machines cannot effectively remove burrs and stains from raw materials, resulting in substandard product quality, easily damaged molds, and an inability to quickly cut raw materials.
The design includes a cleaning section, a grinding section, and a cutting section, which are used for cleaning, grinding, and cutting respectively. The sliding and rotating structure enables all-round cleaning, uniform lubrication, smooth grinding, and rapid cutting.
It improved product quality, protected the mold, ensured processing efficiency and product dimensional consistency, reduced surface roughness and stress concentration, and enabled rapid cutting.
Smart Images

Figure CN117505585B_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to the technical field of refrigeration copper pipe processing, in particular to a hydraulic drawing machine for air conditioner refrigeration copper pipe processing. BACKGROUND
[0002] The hydraulic drawing machine is a device for processing metal pipes, which is often used for processing refrigeration copper pipes. The hydraulic drawing machine uses high pressure generated by the hydraulic system to stretch the metal pipe through the jaws or dies, thereby changing its diameter, wall thickness or length. In the processing of refrigeration copper pipes, the diameter and wall thickness of the pipe are usually adjusted by stretching. The presence of burrs and contaminants on the raw material can cause the size and shape of the drawn product to be inconsistent. The presence of burrs can make it difficult for the material to pass through the die, causing partial deformation or jamming, resulting in the size of the final product not meeting the requirements. Burrs can increase the surface roughness of the drawn product, which can affect the appearance of the product. The presence of burrs can reduce the strength of the drawn product, as burrs can become stress concentration points, causing stress concentration and crack formation, thereby reducing the strength and durability of the product.
[0003] The invention patent with publication number CN103447327B discloses a hydraulic continuous drawing machine, which includes a vertical frame, a left trolley and a right trolley each carrying a drawing hydraulic cylinder; the frame is provided with an inlet channel and an outlet channel, wherein the inlet channel is equipped with a product drawing die; the cylinder body of the left drawing hydraulic cylinder is installed on the left side of the frame, and the cylinder body of the right drawing hydraulic cylinder is installed on the right side of the frame; inside the left trolley, a left clamp is configured, the upper and lower parts of which are in sliding wedge-shaped cooperation with the left trolley and are attached to a left pressing hydraulic cylinder; similarly, inside the right trolley, a right clamp is provided, the upper and lower parts of which are also in sliding wedge-shaped cooperation with the right trolley and are accompanied by a right pressing hydraulic cylinder; a public guide rail is also provided inside the entire frame.
[0004] The above-mentioned prior art solution has the following disadvantages: the existing technology cannot process the burrs present on the raw material, which can easily cause product quality problems; it cannot clean the stains present on the raw material and fully lubricate, which can cause the die to be damaged or the product roughness to not meet the requirements; it cannot achieve rapid cutting of the raw material. SUMMARY
[0005] In view of the above technical problems, the technical scheme used by the present application is: a hydraulic drawing machine for air conditioner refrigeration copper pipe processing, comprising a drawing part, further comprising a cleaning part, a polishing part and a cutting part, the cleaning part is slidingly arranged on the drawing part, the polishing part is rotatably arranged on the drawing part, and the cutting part is rotatably arranged on the drawing part; the cleaning part comprises a cleaning support slidingly arranged on the drawing part, a cleaning overflow cylinder and a cleaning shunt tank are fixedly arranged on the cleaning support, a cleaning sliding ball and a cleaning sliding rod are slidingly arranged in the cleaning overflow cylinder, a cleaning return spring is fixedly arranged between the cleaning sliding ball and the cleaning overflow cylinder, the cleaning sliding rod and the cleaning sliding ball are in sliding fit, the cleaning sliding rod and the slope of the drawing fixed frame are in sliding fit, the cleaning overflow cylinder is connected to the cleaning storage tank through a conduit, the cleaning storage tank is fixedly arranged on the drawing base, the cleaning sliding rod is connected to the cleaning shunt tank through a conduit, the cleaning shunt tank is in sliding fit with a cleaning rotating wheel rotatably arranged on the drawing base, a cleaning sponge is fixedly arranged in the cleaning rotating wheel, a cleaning grooved wheel is fixedly arranged on the cleaning rotating wheel, the cleaning grooved wheel is in sliding fit with a cleaning driving wheel rotatably arranged on the drawing base, a cleaning pinion is fixedly arranged on the cleaning driving wheel, a cleaning connecting rod is eccentrically rotatably arranged on the other side of the cleaning pinion, the other end of the cleaning connecting rod is rotatably arranged on the cleaning support, and the cleaning pinion is engaged with the polishing part.
[0006] Further, the polishing part comprises a polishing bevel gear one engaged with the cleaning pinion, the polishing bevel gear one is rotatably arranged on a polishing rod, a polishing bevel gear three is rotatably arranged on the polishing rod, the polishing bevel gear one and the polishing bevel gear three are engaged with a polishing bevel gear two fixedly arranged on the output shaft of the main motor, and the polishing rod is rotatably arranged on the drawing base.
[0007] Further, a polishing sliding ring is slidingly arranged on the polishing rod, the polishing sliding ring is engaged with the polishing bevel gear one and the polishing bevel gear three, a polishing driving fork is slidingly arranged on the polishing sliding ring, and the polishing driving fork is fixedly arranged on the output shaft of the adjusting cylinder.
[0008] Further, polishing gravity balls one and two are rotatably arranged on the polishing rod, a polishing connecting rod one is rotatably arranged on the polishing gravity ball one, the other end of the polishing connecting rod one is rotatably arranged on a polishing sliding block, a polishing connecting rod two is rotatably arranged on the polishing gravity ball two, and the other end of the polishing connecting rod two is rotatably arranged on the polishing sliding block.
[0009] Further, the polishing sliding block is connected to the polishing rod through a spline, a polishing return spring is fixedly arranged between the polishing sliding block and the polishing rod, a polishing friction frame is fixedly arranged on the polishing sliding block, and the polishing friction frame is in sliding fit with the cutting part.
[0010] Further, the cutting part comprises a cutting rotating wheel in sliding fit with the polishing friction frame, a cutting knife is arranged in the arc-shaped slot on the cutting rotating wheel, the cutting knives are arranged in mirror image along the center of the cutting rotating wheel, the cutting rotating wheel is rotationally arranged on the cutting fixed ring, and the cutting fixed ring is fixedly arranged on the drawing base.
[0011] Further, the cutting knife is arranged in sliding fit on the cutting fixed ring, and the cutting reset spring is fixedly arranged between the cutting knife and the cutting fixed ring.
[0012] Further, the drawing part comprises a drawing base fixed on the ground, a drawing cylinder is fixedly arranged on the drawing base, a drawing head is rotationally arranged on the output shaft of the drawing cylinder, the drawing head is arranged in sliding fit on the drawing base, and a drawing die and a drawing fixed frame are fixedly arranged on the drawing base.
[0013] Compared with the prior art, the present application has the following beneficial effects: 1. The cleaning part can clean the stains on the raw material in all directions, and can uniformly apply lubricating oil to the raw material, ensuring lubrication during drawing, improving product quality and protecting the die; 2. The polishing part can polish the contaminants or burrs on the raw material, and can adjust the polishing rotation direction to ensure the polishing quality; 3. The cutting part can achieve rapid cutting by changing the motor speed when cutting is needed, thereby improving the processing efficiency. BRIEF DESCRIPTION OF DRAWINGS
[0014] Figure 1 It is a schematic diagram of the overall structure of the present application.
[0015] Figure 2 It is a schematic diagram of the overall structure of the present application from the front view angle.
[0016] Figure 3 It is a schematic diagram of the overall structure of the present application from the side view angle.
[0017] Figure 4 It is a schematic diagram of the overall structure of the present application from the side view angle. Figure 1 .
[0018] Figure 5 It is a schematic diagram of the overall structure of the present application from the side view angle. Figure 2 .
[0019] Figure 6 It is a schematic diagram of the overall structure of the present application from the side view angle.
[0020] Figure 7 It is a schematic diagram of the overall structure of the present application from the side view angle. Figure 1 .
[0021] Figure 8 It is a schematic diagram of the overall structure of the present application from the side view angle.
[0022] Figure 9 Schematic diagram of local structure of cleaning part of the present application Figure 2 .
[0023] Figure 10 Schematic diagram of local structure of polishing part of the present application Figure 1 .
[0024] Figure 11 Schematic diagram of local structure of polishing part of the present application Figure 2 .
[0025] Figure 12 Schematic diagram of local structure of cutting part of the present application Figure 1 .
[0026] Figure 13 Schematic diagram of local structure of cutting part of the present application
[0027] Figure 14 Schematic diagram of local structure of cutting part of the present application Figure 2 .
[0028] Figure 15 Schematic diagram of local structure of cutting part of the present application Figure 3 .
[0029] Figure 16 Schematic diagram of local structure of drawing part of the present application
[0030] The drawing mark: 1-cleaning part; 2-polishing part; 3-cutting part; 4-drawing part; 101-cleaning storage tank; 102-cleaning support; 103-cleaning connecting rod; 104-cleaning pinion; 105-cleaning push wheel; 106-cleaning groove wheel; 107-cleaning rotating wheel; 108-cleaning shunt tank; 109-cleaning sliding rod; 110-cleaning release cylinder; 111-cleaning sliding ball; 112-cleaning return spring; 113-cleaning sponge; 201-polishing bevel gear one; 202-polishing bevel gear two; 203-polishing bevel gear three; 204-polishing rod; 205-polishing gravity ball one; 206-polishing connecting rod one; 207-polishing sliding block; 208-polishing gravity ball two; 209-polishing connecting rod two; 210-polishing friction frame; 211-polishing sliding ring; 212-polishing push fork; 213-polishing return spring; 301-cutting rotating wheel; 302-cutting fixed ring; 303-cutting knife; 304-cutting return spring; 401-drawing base; 402-drawing cylinder; 403-drawing head; 404-drawing die; 405-drawing fixed frame. DETAILED DESCRIPTION
[0031] With reference to the drawings of the embodiments of the present application, the technical solutions in the embodiments of the present application will be described clearly and completely. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments of the present application, all the other embodiments obtained by those of ordinary skill in the art without creative work fall within the scope of the present application.
[0032] As shown in Figures 1 to 16 A hydraulic drawing machine for processing air-conditioning refrigeration copper pipes, comprising a drawing part 4, a cleaning part 1, a polishing part 2 and a cutting part 3, the cleaning part 1 is slidingly arranged on the drawing part 4, the polishing part 2 is rotatably arranged on the drawing part 4, and the cutting part 3 is rotatably arranged on the drawing part 4; the cleaning part 1 comprises a cleaning support 102 slidingly arranged on the drawing part 4, a cleaning overflow cylinder 110 and a cleaning shunt tank 108 are fixedly arranged on the cleaning support 102, a cleaning sliding ball 111 and a cleaning sliding rod 109 are slidingly arranged in the cleaning overflow cylinder 110, a cleaning return spring 112 is fixedly arranged between the cleaning sliding ball 111 and the cleaning overflow cylinder 110, the cleaning sliding rod 109 is in sliding fit with the cleaning sliding ball 111, the cleaning sliding rod 109 is in sliding fit with the inclined surface on the drawing fixed frame 405, the cleaning overflow cylinder 110 is connected to the cleaning storage tank 101 through a conduit, the cleaning storage tank 101 is fixedly arranged on the drawing base 401, the cleaning sliding rod 109 is connected to the cleaning shunt tank 108 through a conduit, the cleaning shunt tank 108 is in sliding fit with the cleaning rotating wheel 107 rotatably arranged on the drawing base 401, the cleaning sponge 113 is fixedly arranged in the cleaning rotating wheel 107, the cleaning grooved wheel 106 is fixedly arranged on the cleaning rotating wheel 107, the cleaning grooved wheel 106 is in sliding fit with the cleaning driving wheel 105 rotatably arranged on the drawing base 401, the cleaning pinion 104 is fixedly arranged on the cleaning driving wheel 105, the cleaning connecting rod 103 is eccentrically rotatably arranged on the other side of the cleaning driving wheel 105, the other end of the cleaning connecting rod 103 is rotatably arranged on the cleaning support 102, and the cleaning pinion 104 is in mesh with the polishing part 2.
[0033] The polishing part 2 comprises a polishing bevel gear one 201 engaged with the cleaning pinion 104, the polishing bevel gear one 201 is rotationally arranged on a polishing rod 204, the polishing rod 204 is rotationally arranged with a polishing bevel gear three 203, the polishing bevel gear one 201 and the polishing bevel gear three 203 are engaged with a polishing bevel gear two 202 fixedly arranged on the output shaft of the main motor, and the polishing rod 204 is rotationally arranged on the drawing base 401. The polishing rod 204 is slidably arranged with a polishing sliding ring 211, the polishing sliding ring 211 is engaged with the polishing bevel gear one 201 and the polishing bevel gear three 203, the polishing sliding ring 211 is slidably arranged with a polishing push fork 212, and the polishing push fork 212 is fixedly arranged on the output shaft of the adjusting cylinder. The polishing rod 204 is rotationally arranged with a polishing gravity ball one 205 and a polishing gravity ball two 208, the polishing gravity ball one 205 is rotationally arranged with a polishing connecting rod one 206, the other end of the polishing connecting rod one 206 is rotationally arranged on a polishing sliding block 207, the polishing gravity ball two 208 is rotationally arranged with a polishing connecting rod two 209, and the other end of the polishing connecting rod two 209 is rotationally arranged on the polishing sliding block 207. The polishing sliding block 207 is connected with the polishing rod 204 through the spline, and the polishing sliding block 207 is fixedly arranged with a polishing reset spring 213 between the polishing rod 204, the polishing sliding block 207 is fixedly arranged with a polishing friction frame 210, and the polishing friction frame 210 is slidably matched with the cutting part 3.
[0034] The cutting part 3 comprises a cutting rotating wheel 301 slidably matched with the polishing friction frame 210, arc-shaped grooves are slidably arranged with cutting knives 303 on the cutting rotating wheel 301, the cutting knives 303 are arranged in mirror image along the center of the cutting rotating wheel 301, the cutting rotating wheel 301 is rotationally arranged on a cutting fixed ring 302, and the cutting fixed ring 302 is fixedly arranged on the drawing base 401. The cutting knives 303 are slidably arranged on the cutting fixed ring 302, and the cutting knives 303 are fixedly arranged with a cutting reset spring 304 between the cutting fixed ring 302.
[0035] The drawing part 4 comprises a drawing base 401 fixedly arranged on the ground, the drawing base 401 is fixedly arranged with a drawing cylinder 402, the output shaft of the drawing cylinder 402 is rotationally arranged with a drawing head 403, the drawing head 403 is slidably arranged on the drawing base 401, and the drawing base 401 is fixedly arranged with a drawing die 404 and a drawing fixed frame 405.
[0036] The cleaning sponge 113, the cleaning rotating wheel 107, the polishing bevel gear one 201, the polishing sliding ring 211, the polishing bevel gear three 203, the polishing rod 204, the polishing sliding block 207, the polishing friction frame 210, the cutting rotating wheel 301 and the center of the cutting fixed ring 302 are all provided with holes for the raw materials to pass through, and the inner wall of the polishing rod 204 is fixedly arranged with sandpaper for polishing.
[0037] The working principle of the hydraulic drawing machine for processing air conditioner refrigeration copper pipe is as follows: raw materials are inserted from the end of the cutting fixed ring 302, and then pass through the cutting fixed ring 302, the cutting rotating wheel 301, the polishing friction frame 210, the polishing sliding block 207, the polishing rod 204, the polishing bevel gear three 203, the polishing sliding ring 211, the polishing bevel gear one 201, the cleaning rotating wheel 107, the cleaning sponge 113, and are drawn out from the left end of the cleaning sponge 113 into the drawing die 404, the drawing cylinder 402 is started, the drawing head 403 clamps the raw materials drawn out from the drawing die 404, the drawing cylinder 402 drives the drawing head 403 to draw the raw materials out of the drawing die 404, and the drawing is started.
[0038] Meanwhile, the main motor is started, the main motor drives the polishing bevel gear two 202, the polishing bevel gear two 202 drives the polishing bevel gear one 201 and the polishing bevel gear three 203 to rotate, the polishing bevel gear one 201 drives the cleaning pinion 104 to rotate, the cleaning pinion 104 drives the cleaning driving wheel 105 to rotate, the cleaning driving wheel 105 drives the cleaning groove wheel 106 to rotate, the cleaning groove wheel 106 drives the cleaning rotating wheel 107 to rotate intermittently, and meanwhile, the cleaning driving wheel 105 drives the cleaning connecting rod 103 to rotate, and drives the cleaning support 102 to slide; when the cleaning rotating wheel 107 rotates to a predetermined position, the cleaning support 102 drives the cleaning sliding rod 109 and the cleaning shunt tank 108 to slide to a predetermined position, at this time, the nozzles on the cleaning shunt tank 108 penetrate into the holes on the cleaning rotating wheel 107, the cleaning sliding rod 109 is in sliding fit with the drawing fixing frame 405, so that the cleaning sliding rod 109 slides to the cleaning sliding ball 111, and then the cleaning sliding ball 111 slides to compress the cleaning return spring 112, the channel formed by the cleaning sliding ball 111 and the cleaning flow release cylinder 110 is opened, and the lubricating oil in the cleaning storage tank 101 is sprayed on the cleaning sponge 113 through the pipeline, so as to clean and lubricate the raw materials passing through the cleaning sponge 113.
[0039] When burrs on the raw materials need to be polished, the adjusting cylinder drives the polishing driving fork 212 to engage with the polishing bevel gear one 201 or the polishing bevel gear three 203, the polishing bevel gear one 201 or the polishing bevel gear three 203 drives the polishing sliding ring 211 to rotate, the polishing sliding ring 211 drives the polishing rod 204 to rotate, and the sandpaper arranged on the inner wall of the polishing rod 204 polishes the raw materials, the adjusting cylinder controls the polishing sliding ring 211 to engage with the polishing bevel gear one 201 or the polishing bevel gear three 203, changes the rotating direction of the polishing rod 204, adjusts the rotating direction, and fully polishes the raw materials.
[0040] When the raw material needs to be cut off, the main motor drives the polishing bevel gear two 202 to rotate at high speed, and then the polishing bevel gear one 201, the polishing bevel gear three 203, the polishing sliding ring 211 and the polishing rod 204 rotate at high speed. When the rotation speed of the polishing rod 204 reaches the predetermined speed, the centrifugal force makes the polishing gravity ball one 205 pull the polishing connecting rod one 206, and the polishing gravity ball two 208 pulls the polishing connecting rod two 209, and then pulls the polishing sliding block 207 and the polishing friction frame 210 to slide to make the polishing reset spring 213 compressed. At this time, the polishing friction frame 210 is engaged with the cutting rotating wheel 301, drives the cutting rotating wheel 301 to rotate, the cutting rotating wheel 301 rotates to drive the cutting knife 303 to compress the cutting reset spring 304, so that the cutting knife 303 slides to the center of the cutting rotating wheel 301, and the raw material passing through the cutting rotating wheel 301 is cut off.
[0041] When the drawing head 403 pulls the raw material out of the drawing die 404, the drawing work is completed.
Claims
1. A hydraulic drawing machine for processing air-conditioning refrigeration copper pipes, comprising a drawing part (4), characterized in that: Also include cleaning department (1), polishing department (2), cutting department (3), the cleaning department (1) is slidably arranged on the drawing department (4), the polishing department (2) is rotatably arranged on the drawing department (4), the cutting department (3) is rotatably arranged on the drawing department (4);The cleaning department (1) includes a cleaning support (102) slidably arranged on the drawing department (4), a cleaning flow cylinder (110) and a cleaning flow tank (108) are fixedly arranged on the cleaning support (102), a cleaning sliding ball (111) and a cleaning sliding rod (109) are slidably arranged in the cleaning flow cylinder (110), a cleaning return spring (112) is fixedly arranged between the cleaning sliding ball (111) and the cleaning flow cylinder (110), the cleaning sliding rod (109) and the cleaning sliding ball (111) are in sliding fit, the cleaning sliding rod (109) and the inclined surface on the drawing fixed frame (405) are in sliding fit, the cleaning flow cylinder (110) is connected to the cleaning storage tank (101) by a conduit, the cleaning storage tank (101) is fixedly arranged on the drawing base (401), the cleaning sliding rod (109) is connected to the cleaning flow tank (108) by a conduit, the cleaning flow tank (108) is in sliding fit with the cleaning rotating wheel (107) rotatably arranged on the drawing base (401), the cleaning rotating wheel (107) is fixedly provided with a cleaning sponge (113), the cleaning rotating wheel (107) is fixedly provided with a cleaning groove wheel (106), the cleaning groove wheel (106) is in sliding fit with the cleaning driving wheel (105) rotatably arranged on the drawing base (401), the cleaning driving wheel (105) is fixedly provided with a cleaning pinion (104), the cleaning driving wheel (105) is eccentrically rotatably arranged on the other side of the cleaning link (103), the cleaning link (103) is rotatably arranged on the other end of the cleaning support (102), and the cleaning pinion (104) is engaged with the polishing department (2); The polishing department (2) includes a polishing bevel gear one (201) engaged with the cleaning pinion (104), the polishing bevel gear one (201) is rotatably arranged on the polishing rod (204), the polishing rod (204) is rotatably provided with a polishing bevel gear three (203), the polishing bevel gear one (201) and the polishing bevel gear three (203) are engaged with the polishing bevel gear two (202) fixedly arranged on the output shaft of the main motor, and the polishing rod (204) is rotatably arranged on the drawing base (401).
2. The hydraulic pipe drawing machine for processing air conditioner refrigeration copper pipe according to claim 1, characterized in that: The polishing rod (204) is slidably provided with a polishing sliding ring (211), the polishing sliding ring (211) is engaged with the polishing bevel gear one (201) and the polishing bevel gear three (203), the polishing sliding ring (211) is slidably provided with a polishing driving fork (212), and the polishing driving fork (212) is fixedly arranged on the output shaft of the adjusting cylinder.
3. The hydraulic pipe drawing machine for processing air conditioner refrigeration copper pipe according to claim 2, characterized in that: The polishing rod (204) is provided with a polishing gravity ball I (205) and a polishing gravity ball II (208) which are rotatably arranged on the polishing rod (204), the polishing gravity ball I (205) is rotatably provided with a polishing connecting rod I (206) on the polishing gravity ball I (205), the other end of the polishing connecting rod I (206) is rotatably arranged on a polishing sliding block (207), the polishing gravity ball II (208) is rotatably provided with a polishing connecting rod II (209) on the polishing gravity ball II (208), and the other end of the polishing connecting rod II (209) is rotatably arranged on the polishing sliding block (207).
4. The hydraulic pipe drawing machine for processing air conditioner refrigeration copper pipe according to claim 3, characterized in that: The polishing sliding block (207) is connected with the polishing rod (204) through a spline, and a polishing reset spring (213) is fixedly arranged between the polishing sliding block (207) and the polishing rod (204), a polishing friction frame (210) is fixedly arranged on the polishing sliding block (207), and the polishing friction frame (210) is in sliding fit with the cutting part (3).
5. The hydraulic pipe drawing machine for processing air conditioner refrigeration copper pipe according to claim 4, characterized in that: The cutting part (3) comprises a cutting rotating wheel (301) in sliding fit with the polishing friction frame (210), a cutting knife (303) is arranged in the arc-shaped groove of the cutting rotating wheel (301) in sliding mode, the cutting knife (303) is arranged in mirror image along the center of the cutting rotating wheel (301), the cutting rotating wheel (301) is rotatably arranged on a cutting fixed ring (302), and the cutting fixed ring (302) is fixedly arranged on a drawing base (401).
6. The hydraulic pipe drawing machine for processing air conditioner refrigeration copper pipe according to claim 5, characterized in that: The cutting knife (303) is arranged in sliding mode on the cutting fixed ring (302), and a cutting reset spring (304) is fixedly arranged between the cutting knife (303) and the cutting fixed ring (302).
7. The hydraulic pipe drawing machine for processing air conditioner refrigeration copper pipe according to claim 6, characterized in that: The drawing part (4) comprises a drawing base (401) fixed on the ground, a drawing cylinder (402) is fixedly arranged on the drawing base (401), a drawing head (403) is rotatably arranged on the output shaft of the drawing cylinder (402), the drawing head (403) is arranged in sliding mode on the drawing base (401), and a drawing mold (404) and a drawing fixed frame (405) are fixedly arranged on the drawing base (401).
Citation Information
Patent Citations
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