Automobile lamp injection mold convenient to cool

Abstract

The utility model discloses an automobile lamp injection mold convenient to cool, which belongs to the technical field of injection molds and comprises a mounting bottom plate, an injection molding component for injection molding of an automobile lamp injection molding part is mounted above the mounting bottom plate, and a telescopic ejection component for taking off the automobile lamp injection molding part is mounted on the injection molding component. A conveying and cooling assembly for conveying and cooling the automobile lamp injection molding part is mounted on the mounting bottom plate, the conveying and cooling assembly comprises a linear module, a fixing assembly and an air cooling assembly, the linear module is fixedly mounted on the left side of the mounting bottom plate, and the bottom surface of the fixing assembly is fixedly connected with the sliding block end of the linear module; and an air cooling assembly is arranged at the upper end of the fixing assembly. By means of the mode, the injection molding part of the vehicle lamp can be cooled through water cooling and secondary air cooling, the cooling efficiency is higher, the injection molding efficiency is improved, meanwhile, the injection molding part of the vehicle lamp can be separated from the mold and conveyed to a collecting area, and the production efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of injection molds, in particular to an injection mold for automobile lamps which is easy to cool. Background Art

[0002] Headlights, as an indispensable lamp on a vehicle, play a vital role. They are not only a road lighting tool for night driving, providing the necessary light to ensure driving safety; they are also a tool for issuing various driving signals to effectively communicate with other road users. In the production process, it is first necessary to design and manufacture high-precision molds. These molds must meet strict standards to ensure that the produced headlight components can accurately match the vehicle. Subsequently, the molten plastic is injected into the mold through the injection molding process, and a solid headlight component is obtained after cooling and molding.

[0003] Among many existing technologies, the injection mold for automobile lamp production disclosed in Chinese patent application CN113715264A includes an upper mold base, a lower mold base is arranged at the bottom of the upper mold base, a base is fixedly installed at the bottom of the lower mold base, a pressing module is fixedly installed at the center of the bottom of the upper mold base, an injection molding cavity is arranged inside the lower mold base, a liquid storage tank is clamped and placed on the left side of the top of the base, and a delivery pump is connected to the right side of the liquid storage tank.

[0004] However, this patent application delivers the coolant to the interior of the injection mold cavity and contacts the product to cool it. If the product is tightly attached to the mold or the gap is small, the cooling effect will be greatly reduced and the product cannot be separated from the mold.

[0005] Based on this, the utility model designs an automobile lamp injection mold which is easy to cool to solve the above problems. Utility Model Content

[0006] In view of the above-mentioned shortcomings of the prior art, the utility model provides an automobile lamp injection mold which is easy to cool.

[0007] In order to achieve the above objectives, the present invention is implemented through the following technical solutions:

[0008] An automobile headlight injection mold that is easy to cool, comprising a mounting base plate, an injection molding assembly for molding a headlight injection molded part is mounted above the mounting base plate, a telescopic ejection assembly for removing the headlight injection molded part is mounted on the injection molding assembly, and a conveying and cooling assembly for conveying and cooling the headlight injection molded part is mounted on the mounting base plate;

[0009] The conveying cooling component includes a linear module, a fixed component and an air cooling component. The linear module is fixedly installed on the left upper end surface of the mounting base plate. The bottom surface of the fixed component is fixedly connected to the slider end of the linear module. The upper end of the fixed component is provided with an air cooling component.

[0010] Furthermore, the injection molding component includes a first mold component and a second mold component, the first mold component is arranged on the left side of the mounting base plate and the rear side is connected to the output end of the mobile device, the second mold component is arranged at the upper end of the mounting base plate, the bottom surface of the second mold component is connected to the mounting base plate, and the second mold component is connected to the telescopic ejection component.

[0011] Furthermore, the first mold assembly includes a shaping block, a first cylinder, an injection hole, a telescopic hole, a first mold body, a U-shaped hole and an L-shaped hole. The shaping block is fixedly installed at the right center position of the first mold body. A U-shaped hole opening to the left is provided inside the shaping block, and two groups of U-shaped holes are arranged in the vertical direction. L-shaped holes are symmetrically provided on the front and rear sides of the right end of the first mold body, and two groups of L-shaped holes are arranged in the vertical direction. The opening at the outer end of the L-shaped hole is fixedly connected with a mounting tube. The opening of the L-shaped hole on the right side of the first mold body is respectively connected with the two openings of the U-shaped hole located in the same plane. A downward injection hole is provided at the upper end of the first mold body, and the opening at the upper end of the injection hole is fixedly connected with a mounting tube. The opening at the lower end of the injection hole is connected with the telescopic hole. The telescopic holes are provided at the center position of the shaping block and the first mold body and are connected with each other. The first cylinder is fixedly installed on the left side of the first mold body, and the output end of the first cylinder is inserted into the left end of the telescopic hole. The output end of the first cylinder slides in the telescopic hole and is slidably connected with the shaping block and the first mold body.

[0012] Furthermore, the second mold assembly includes a shaping groove, a shaping sliding block, a second mold and a through hole, the shaping groove is opened at the center of the shaping sliding block, the shaping sliding block is slidably connected to the second mold body, the lower end surface of the second mold body is fixedly connected to the upper end surface of the mounting base plate, and two groups of through holes are opened on the left side of the second mold body, which are arranged vertically at the upper end and the lower end of the shaping sliding block, and the two ends of the through hole are respectively fixedly connected with mounting tubes, and the shaping sliding block is connected to the telescopic ejection assembly.

[0013] Furthermore, the telescopic ejection assembly includes a telescopic assembly and an ejection assembly, the telescopic assembly and the ejection assembly are installed inside the second mold body, and the ejection assembly is connected to the shaping sliding block.

[0014] Furthermore, the telescopic assembly includes a second cylinder, a first connecting rod and two groups of first sliding rods, the second cylinder is fixedly connected to the second mold body, the output end of the second cylinder is fixedly connected to the middle of the right side of the first connecting rod, the right end of the first sliding rod is respectively fixedly connected to the two ends of the left side of the first connecting rod, and the other end of the first sliding rod is respectively fixedly connected to the right side of the shaping sliding block.

[0015] Furthermore, the ejection assembly includes a third cylinder, a second connecting rod and two groups of second sliding rods. The third cylinder is fixedly connected to the shaping sliding block, the output end of the third cylinder is fixedly connected to the middle of the right end of the second connecting rod, the left ends of the second connecting rod are respectively fixedly connected with the second sliding rods, and the second sliding rods are slidably connected to the shaping sliding block.

[0016] Furthermore, the fixing assembly includes a fixing seat and two sets of fixing rods. The lower end of the fixing seat is fixedly connected to the slider end of the linear module. The fixing rods are arranged front to back and fixedly installed on the upper right end of the fixing seat. A limiting groove is opened on the left side of the fixing rod, and a hemispherical block is fixedly installed on the right side of the fixing rod.

[0017] Furthermore, the air cooling component includes a connecting pipe and a connecting groove, wherein the connecting pipe is fixedly installed on the upper end of the fixing seat, the connecting pipe is connected to the connecting groove, the connecting groove is opened at the upper end of the fixing seat, and the opening below the connecting groove is inclined to the left.

[0018] Compared with the prior art, the utility model has the following beneficial effects:

[0019] The injection molding component at the mobile end is fitted to the injection molding component at the fixed end to the right, and the injection molding component is used to feed the material for injection molding. The injection molding component can perform preliminary cooling and molding of the headlight injection molded parts. After molding, the injection molding component at the mobile end retreats to the left, and the linear module drives the fixed component and the air cooling component to move to the left side of the telescopic ejector component. The telescopic ejector component removes the headlight injection molded parts from the injection molding component at the fixed end and sends them to the linear module. The upper end of the air cooling component is connected to the cold air duct, and cold air is blown in through the air cooling component to perform secondary cooling on the headlight injection molded parts. At the same time, the headlight injection molded parts are moved out of the injection molding area and sent to the collection area. The headlight injection molded parts are cooled by water cooling and secondary air cooling, and the cooling efficiency is higher, which improves the injection molding efficiency. At the same time, the product can be separated from the mold and transported to the collection area, thereby improving the production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the prior art descriptions are briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model, and for ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0021] Figure 1 The utility model is a three-dimensional mold of an automobile lamp injection mold which is easy to cool. Figure 1 ;

[0022] Figure 2 This is a front view of an injection mold for an automobile lamp that is easy to cool according to the utility model;

[0023] Figure 3 This is a left view of an injection mold for automobile lights that is easy to cool according to the utility model;

[0024] Figure 4 For along Figure 2 AA direction cross-sectional view;

[0025] Figure 5 For along Figure 3 BB direction cross-sectional view;

[0026] Figure 6 for Figure 4 Enlarged view of point C in the middle;

[0027] Figure 7 A schematic diagram of a fixed component.

[0028] The numbers in the figure represent:

[0029] 1. Install the base plate 2. Injection molding assembly 21. First mold assembly 211. Shaping block 212. First cylinder 213. Injection hole 214. Telescopic hole 215. First mold 216. U-shaped hole 217. L-shaped hole 22. Second mold assembly 221. Shaping groove 222. Shaping sliding block 223. Second mold 224. Through hole 3. Telescopic ejector assembly 31. Telescopic assembly 311. Second cylinder 312. First connecting rod 313. First slide bar 32. Ejector assembly 321. Third cylinder 322. Second connecting rod 323. Second slide bar 4. Conveying and cooling assembly 41. Linear module 42. Fixed assembly 421. Fixed seat 422. Fixed rod 423. Limiting groove 43. Air cooling assembly 431. Connecting pipe 432. Connecting groove 5. Injection molding of car lights. DETAILED DESCRIPTION

[0030] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0031] The terms “left”, “right”, “front”, “back”, “up” and “down” mentioned in the following description are oriented in the viewing direction of the front view.

[0032] In some embodiments, please refer to the attached instructions. Figure 1-7, an automobile headlight injection mold that is easy to cool, comprising a mounting base plate 1, an injection molding assembly 2 for molding a headlight injection molded part 5 is mounted above the mounting base plate 1, a telescopic ejection assembly 3 for removing the headlight injection molded part 5 is mounted on the injection molding assembly 2, and a conveying and cooling assembly 4 for conveying and cooling the headlight injection molded part 5 is mounted on the mounting base plate 1;

[0033] The conveying cooling assembly 4 includes a linear module 41, a fixed assembly 42 and an air cooling assembly 43. The linear module 41 is fixedly mounted on the upper end surface of the left side of the mounting base plate 1. The bottom surface of the fixed assembly 42 is fixedly connected to the slider end of the linear module 41. The upper end of the fixed assembly 42 is provided with an air cooling assembly 43.

[0034] When the utility model is used, the injection molding component 2 at the movable end is attached to the injection molding component 2 at the fixed end to the right, and the injection molding component 2 is used to feed the material for injection molding. The injection molding component 2 can perform preliminary cooling and molding of the headlight injection molded part 5. After the headlight injection molded part is formed, the injection molding component 2 at the movable end retreats to the left, and the linear module 41 drives the fixed component 42 and the air cooling component 43 to move to the left side of the telescopic ejection component 3. The telescopic ejection component 3 removes the headlight injection molded part 5 from the injection molding component 2 at the fixed end and sends it to the linear module 41. The upper end of the air cooling component 43 is connected to the cold air duct, and cold air is blown in through the air cooling component 43 to perform secondary cooling on the headlight injection molded part 5. At the same time, the linear module 41 moves the headlight injection molded part 5 out of the injection molding area and sends it to the collection area.

[0035] The injection molding assembly 2 includes a first mold assembly 21 and a second mold assembly 22. The first mold assembly 21 is arranged on the left side of the mounting base plate 1 and the rear side is connected to the output terminal of the mobile device. The second mold assembly 22 is arranged on the upper end of the mounting base plate 1. The bottom surface of the second mold assembly 22 is connected to the mounting base plate 1. The second mold assembly 22 is connected to the telescopic ejection assembly 3.

[0036] The first mold assembly 21 includes a shaping block 211, a first cylinder 212, an injection hole 213, a telescopic hole 214, a first mold body 215, a U-shaped hole 216 and an L-shaped hole 217. The shaping block 211 is fixedly installed at the right center of the first mold body 215. The inside of the shaping block 211 is provided with a U-shaped hole 216 opening to the left, and two groups of U-shaped holes 216 are arranged in the vertical direction. L-shaped holes 217 are symmetrically opened on the front and rear sides of the right end of the first mold body 215, and two groups of L-shaped holes 217 are arranged in the vertical direction. The opening at the outer end of the L-shaped hole 217 is fixedly connected to a mounting pipe, and the L-shaped hole 217 is located at the opening on the right side of the first mold body 215. The first mold body 215 is provided with a downward injection hole 213 at the upper end thereof, the upper opening of the injection hole 213 is fixedly connected with a mounting tube, the lower opening of the injection hole 213 is connected with a telescopic hole 214, the telescopic hole 214 is provided at the center of the shaping block 211 and the first mold body 215 and is connected with each other, the first cylinder 212 is fixedly installed on the left side of the first mold body 215, the output end of the first cylinder 212 is inserted into the left end of the telescopic hole 214, the output end of the first cylinder 212 slides in the telescopic hole 214 and is connected with the shaping block 211 and the first mold body 215;

[0037] The second mold assembly 22 includes a shaping groove 221, a shaping sliding block 222, a second mold 223 and a through hole 224. The shaping groove 221 is opened at the center of the shaping sliding block 222. The shaping sliding block 222 is slidably connected to the second mold 223. The lower end surface of the second mold 223 is fixedly connected to the upper end surface of the mounting base 1. Two groups of through holes 224 are opened on the left side of the second mold 223, which are arranged up and down at the upper end and the lower end of the shaping sliding block 222, and the two ends of the through hole 224 are respectively fixedly connected with mounting pipes. The shaping sliding block 222 is connected to the telescopic ejection assembly 3;

[0038] The telescopic ejection assembly 3 includes a telescopic assembly 31 and an ejection assembly 32, which are installed inside the second mold body 223, and the ejection assembly 32 is connected to the shaping sliding block 222;

[0039] The telescopic assembly 31 includes a second cylinder 311, a first connecting rod 312 and two groups of first sliding rods 313. The second cylinder 311 is fixedly connected to the second mold body 223. The output end of the second cylinder 311 is fixedly connected to the middle of the right side of the first connecting rod 312. The right end of the first sliding rod 313 is respectively fixedly connected to the two ends of the left side of the first connecting rod 312. The other end of the first sliding rod 313 is respectively fixedly connected to the right side of the shaping sliding block 222.

[0040] The ejection assembly 32 includes a third cylinder 321, a second connecting rod 322 and two sets of second sliding rods 323. The third cylinder 321 is fixedly connected to the shaping sliding block 222. The output end of the third cylinder 321 is fixedly connected to the middle of the right end of the second connecting rod 322. The left ends of the second connecting rod 322 are respectively fixedly connected with the second sliding rods 323. The second sliding rods 323 are slidably connected to the shaping sliding block 222.

[0041] The fixing assembly 42 includes a fixing seat 421 and two sets of fixing rods 422. The lower end of the fixing seat 421 is fixedly connected to the slider end of the linear module 41. The fixing rods 422 are arranged front and back and fixedly installed on the upper right end of the fixing seat 421. A limiting groove 423 is provided on the left side of the fixing rod 422. A hemispherical block is fixedly installed on the right side of the fixing rod 422.

[0042] The air cooling assembly 43 includes a connecting pipe 431 and a connecting groove 432. The connecting pipe 431 is fixedly installed on the upper end of the fixing seat 421. The connecting pipe 431 is connected to the connecting groove 432. The connecting groove 432 is opened at the upper end of the fixing seat 421. The opening below the connecting groove 432 is inclined to the left.

[0043] During injection molding of the utility model, the first mold body 215 fits the second mold body 223 to the left. At this time, the shaping block 211 cooperates with the shaping groove 221 to form a cavity, and the material is fed from the injection hole 213. During the feeding process, the output end of the first cylinder 212 is retracted, and the material coming from the injection hole 213 flows into the telescopic hole 214, and then flows into the cavity formed by the shaping block 211 and the shaping groove 221 through the telescopic hole 214. After sufficient feeding, the output end of the first cylinder 212 is pushed to be parallel to the right side surface of the shaping block 211, and the lower end of the injection hole 213 is closed. Then, cooling water is injected into the installation tube at one end of the L-shaped hole 217, and the L-shaped hole 217 flows into the U-shaped hole 216 and then flows out to the opposite L-shaped hole 217. At the same time, cooling water is also injected into one end of the through hole 224 by the installation tube, and flows out from the other end of the through hole 224, thereby achieving a cooling effect. After cooling is completed, the first mold body 215 retreats, and the linear module 41 drives the fixed component 42 and the air cooling component 43 to move to the left side of the telescopic ejection component 3. The second cylinder 311 drives the first connecting rod 312, and the first connecting rod 312 drives the first sliding rod 313. The first sliding rod 313 drives the shaping sliding block 222 to slide to the left. When it reaches the right side of the fixed rod 422, the third cylinder 321 drives the second connecting rod 322, and the second connecting rod 322 drives the second sliding rod 323 removes the headlight injection molded part 5 from the shaping sliding block 222, and the second connecting rod 322 is pushed to the left to push the headlight injection molded part 5 onto the fixing rod 422. A hemispherical block is installed at the front end of the fixing rod 422 to facilitate the pushing of the headlight injection molded part 5. The headlight injection molded part 5 is pushed into the limiting groove 423 for limiting and stabilization. Then the upper end of the connecting pipe 431 is connected to the cold air duct, and the connecting pipe 431 is connected to the connecting groove 432. Cold air is blown to the headlight injection molded part 5 through the connecting groove 432 for secondary cooling. The lower part of the connecting groove 432 is tilted to the left so that the wind blows to the headlight injection molded part 5. During the cooling process, the headlight injection molded part 5 is simultaneously moved out of the injection area and sent to the collection area, thereby realizing the secondary cooling of the headlight injection molded part 5. At the same time, the headlight injection molded part 5 can be quickly removed and sent to the collection area.

[0044] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. Such modifications or replacements will not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. An injection mold for automobile lamps that is easy to cool, comprising a mounting base plate (1), characterized in that: An injection molding assembly (2) for molding an injection-molded headlight part (5) is installed above the installation base plate (1); a telescopic ejection assembly (3) for removing the injection-molded headlight part (5) is installed on the injection molding assembly (2); and a conveying and cooling assembly (4) for conveying and cooling the injection-molded headlight part (5) is installed on the installation base plate (1); The conveying cooling component (4) comprises a linear module (41), a fixed component (42) and an air cooling component (43); the linear module (41) is fixedly mounted on the left upper end surface of the mounting base plate (1); the bottom surface of the fixed component (42) is fixedly connected to the slider end of the linear module (41); and the upper end of the fixed component (42) is provided with an air cooling component (43).

2. The easy-to-cool automobile lamp injection mold according to claim 1, characterized in that: The injection molding component (2) comprises a first mold component (21) and a second mold component (22); the first mold component (21) is arranged on the left side of the mounting base plate (1) and the rear side is connected to the output end of the mobile device; the second mold component (22) is arranged on the upper end of the mounting base plate (1); the bottom surface of the second mold component (22) is connected to the mounting base plate (1); and the second mold component (22) is connected to the telescopic ejection component (3).

3. The easy-to-cool automobile lamp injection mold according to claim 2, characterized in that: The first mold assembly (21) comprises a shaping block (211), a first cylinder (212), an injection hole (213), a telescopic hole (214), a first mold body (215), a U-shaped hole (216) and an L-shaped hole (217); the shaping block (211) is fixedly mounted at the right center of the first mold body (215); a U-shaped hole (216) opening to the left is provided inside the shaping block (211); two groups of U-shaped holes (216) are arranged in a vertical direction; L-shaped holes (217) are symmetrically provided on the front and rear sides of the right end of the first mold body (215); two groups of L-shaped holes (217) are arranged in a vertical direction; the opening at the outer end of the L-shaped hole (217) is fixedly connected to a mounting pipe; the opening of the L-shaped hole (217) on the right side of the first mold body (215) is respectively connected to the opening of the L-shaped hole (217) on the same plane as the opening of the L-shaped hole (217) on the right side of the first mold body (215); The two openings of the U-shaped hole (216) are connected, the upper end of the first mold body (215) is provided with a downward injection hole (213), the upper opening of the injection hole (213) is fixedly connected to a mounting tube, the lower opening of the injection hole (213) is connected to a telescopic hole (214), the telescopic hole (214) is opened at the center of the shaping block (211) and the first mold body (215) and is connected to each other, the first cylinder (212) is fixedly installed on the left side of the first mold body (215), the output end of the first cylinder (212) is inserted into the left end of the telescopic hole (214), the output end of the first cylinder (212) slides in the telescopic hole (214) and is slidably connected to the shaping block (211) and the first mold body (215), and the rear side of the first mold body (215) is fixedly connected to the output end of the mobile device.

4. The easy-to-cool automobile lamp injection mold according to claim 3, characterized in that: The second mold assembly (22) includes a shaping groove (221), a shaping sliding block (222), a second mold (223) and a through hole (224), wherein the shaping groove (221) is opened at the center of the shaping sliding block (222), the shaping sliding block (222) is slidably connected to the second mold (223), the lower end surface of the second mold (223) is fixedly connected to the upper end surface of the mounting base (1), and two groups of through holes (224) are opened on the left side of the second mold (223), which are arranged in an upper and lower manner and located at the upper end and the lower end of the shaping sliding block (222), and the two ends of the through hole (224) are respectively fixedly connected with mounting tubes, and the shaping sliding block (222) is connected to the telescopic ejection assembly (3).

5. The easy-to-cool automobile lamp injection mold according to claim 4, characterized in that: The telescopic ejection assembly (3) comprises a telescopic assembly (31) and an ejection assembly (32), wherein the telescopic assembly (31) and the ejection assembly (32) are installed inside the second mold body (223), and the ejection assembly (32) is connected to the shaping sliding block (222).

6. The easy-to-cool automobile lamp injection mold according to claim 5, characterized in that: The telescopic assembly (31) comprises a second cylinder (311), a first connecting rod (312) and two groups of first sliding rods (313); the second cylinder (311) is fixedly connected to the second mold body (223); the output end of the second cylinder (311) is fixedly connected to the middle of the right side of the first connecting rod (312); the right end of the first sliding rod (313) is respectively fixedly connected to the two ends of the left side of the first connecting rod (312); and the other end of the first sliding rod (313) is respectively fixedly connected to the right side of the shaping sliding block (222).

7. The easy-to-cool automobile lamp injection mold according to claim 6, characterized in that: The ejection assembly (32) comprises a third cylinder (321), a second connecting rod (322) and two groups of second sliding rods (323); the third cylinder (321) is fixedly connected to the shaping sliding block (222); the output end of the third cylinder (321) is fixedly connected to the middle of the right end of the second connecting rod (322); the left ends of the second connecting rod (322) are respectively fixedly connected to the second sliding rods (323); the second sliding rods (323) are slidably connected to the shaping sliding block (222).

8. The easy-to-cool automobile lamp injection mold according to claim 7, characterized in that: The fixing assembly (42) comprises a fixing seat (421) and two sets of fixing rods (422); the lower end of the fixing seat (421) is fixedly connected to the slider end of the linear module (41); the fixing rods (422) are arranged front and back and fixedly installed on the upper right end of the fixing seat (421); a limiting groove (423) is provided on the left side of the fixing rod (422); and a hemispherical block is fixedly installed on the right side of the fixing rod (422).

9. The easy-to-cool automobile lamp injection mold according to claim 8, characterized in that: The air cooling component (43) comprises a connecting pipe (431) and a connecting groove (432), wherein the connecting pipe (431) is fixedly installed on the upper end of the fixing seat (421), the connecting pipe (431) is connected to the connecting groove (432), the connecting groove (432) is opened on the upper end of the fixing seat (421), and the opening below the connecting groove (432) is inclined to the left.

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