Injection mold for LED atmosphere lamp shell assembly of automobile front door

Abstract

The utility model relates to an automobile front door LED atmosphere lamp shell assembly injection mold which sequentially comprises a fixed mold mechanism, a demolding mechanism and a movable mold mechanism, the fixed mold mechanism sequentially comprises a first fixing plate, a panel, a fixed mold and a fixed mold core, a first profiling part is arranged on the fixed mold core, a pouring mechanism is arranged on the fixed mold mechanism in a penetrating mode, and a second profiling part is arranged on the panel. The movable mold mechanism sequentially comprises a second fixing plate, a movable mold and a movable mold core, a second profiling part is arranged on the movable mold core, the demolding mechanism comprises two demolding assemblies which are symmetrically arranged, each demolding assembly comprises a driving mechanism, a positioning assembly, a sliding seat and a third profiling part, the driving mechanism is installed at the side end of the movable mold, the positioning assembly is installed on the sliding seat, and the third profiling part is installed on the sliding seat. The third profiling parts are installed at one end of the sliding seat, the sliding seat is in sliding fit with the movable mold, and the first profiling part, the second profiling part and the two third profiling parts form a forming cavity. According to the mold, machining and injection molding of the special-shaped shell are achieved, and the injection molding efficiency and the injection molding accuracy are improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to injection mold technical field especially is involved in the automobile front door LED atmosphere lamp shell assembly injection mold. BACKGROUND

[0002] The automobile front door LED atmosphere lamp shell assembly is composed of two symmetrical special-shaped shells, two LED atmosphere lamps can be assembled on the two shells, and the two special-shaped shells are installed on the two front doors of the automobile respectively. SUMMARY

[0003] The utility model provides a kind of automobile front door LED atmosphere lamp shell assembly injection mold, the mold not only realizes the processing injection molding of special-shaped shell, and also improves injection efficiency and injection accuracy.

[0004] The utility model discloses a kind of automobile front door LED atmosphere lamp shell assembly injection mold, including fixed die mechanism, stripping mechanism and movable die mechanism, stripping mechanism is located between fixed die mechanism and movable die mechanism.

[0005] The fixed die mechanism includes in turn separable first fixed plate, panel, fixed die and fixed die kernel, first profiling portion is provided on fixed die kernel, first fixed plate, panel, fixed die and fixed die kernel are provided with pouring mechanism in penetration.

[0006] The movable die mechanism includes in turn fixedly connected second fixed plate, movable die and movable die kernel, movable die kernel is provided with second profiling portion and symmetrically arranged profiling column assembly for the shaping of the through hole of shell, and stripping mechanism is provided with ejection mechanism between second fixed plate and movable die.

[0007] The stripping mechanism includes two symmetrically arranged stripping assemblies, two stripping assemblies are located at the two sides of fixed die kernel and movable die kernel, and the stripping assembly includes driving mechanism, positioning assembly for positioning fixed die, sliding seat and third profiling portion, driving mechanism is installed at the side end of movable die, positioning assembly is installed on sliding seat, third profiling portion is installed at one end of sliding seat, sliding seat is slidably connected with movable die, and the driving end of driving mechanism is connected with sliding seat.

[0008] The first profiling portion, second profiling portion and two third profiling portions form forming cavity, the pouring mechanism is communicated with forming cavity, and the ejection mechanism is used for ejecting the shell in forming cavity from the mold.

[0009] In one embodiment, a first cooling component for cooling the molding cavity is provided through the moving mold of the automotive front door LED ambient light housing assembly injection mold. The first cooling component includes a plurality of first water inlets and a plurality of first water outlets, and a first cooling water pipe passing through the moving mold core is provided between the first water inlets and the first water outlets.

[0010] In one embodiment, a second cooling component for cooling the molding cavity is provided through the fixed mold of the automotive front door LED ambient light housing assembly injection mold. The second cooling component includes a plurality of second water inlets and a plurality of second water outlets, and a second cooling water pipe passing through the fixed mold core is provided between the second water inlets and the second water outlets.

[0011] In one embodiment, the panel of the injection mold for the LED ambient light housing assembly of the car front door is provided with a heating component for heating the casting mechanism. The heating component includes a plurality of heating tubes, and the two ends of the heating tubes are provided with a third water inlet and a third water outlet.

[0012] In one embodiment, the gating mechanism of the injection mold for the automotive front door LED ambient light housing assembly includes a gating tube, a gating connecting block, and two symmetrically arranged runners. The gating connecting block is installed inside the panel, and the gating tube communicates with the two runners through the gating connecting block. The gating connecting block is provided with a through hole for communicating with the gating tube and the runners and a heating device for heating the gating tube and the runners. The two runners pass through the fixed mold and the fixed mold core, respectively, and communicate with the molding cavity.

[0013] In one embodiment, the ejection mechanism of the injection mold for the LED ambient light housing assembly of the car front door includes a first ejector plate, a second ejector plate, and two vertically symmetrically arranged positioning plates. The second ejector plate is located between the first ejector plate and the second fixed plate. The first ejector plate and the second ejector plate are slidably engaged with the two positioning plates. The first ejector plate is provided with a plurality of contour ejector assemblies for ejecting the housing from the molding cavity. The first ejector plate is connected to the moving mold through an elastic guide assembly. The second fixed plate is provided with a support assembly, which passes through the second ejector plate, the first ejector plate, and the moving mold in sequence and is connected to the moving mold core.

[0014] In one embodiment, the elastic guide component of the injection mold for the automotive front door LED ambient light housing assembly includes four guide pillars and four springs. The four springs are sequentially sleeved on the four guide pillars, with one end of the spring abutting against the first ejector plate and the other end of the spring abutting against the moving mold.

[0015] In one embodiment, the positioning component of the injection mold for the LED ambient light housing assembly of the car front door includes a positioning block and a plurality of positioning pins. The positioning block is mounted on a sliding seat, and the plurality of positioning pins are sequentially and spaced apart on the positioning block. The plurality of positioning pins are used to position and cooperate with the fixed mold.

[0016] In one embodiment, the driving mechanism of the injection mold for the automotive front door LED ambient light housing assembly is a cylinder or a motor.

[0017] The beneficial effects of this application are as follows:

[0018] This application provides an injection mold for an LED ambient light housing assembly for an automotive front door. By setting a demolding mechanism that works in conjunction with a fixed mold mechanism and a moving mold mechanism, the assembly not only achieves injection molding of the housing but also improves injection efficiency and precision, while increasing the yield rate of injection molding.

[0019] The injection mold for the LED ambient light housing assembly of the car front door uses a demolding mechanism that not only forms a molding cavity with the moving mold core and the fixed mold core, but also demolds the housing inside the molding cavity, thus improving demolding efficiency.

[0020] The injection mold for the LED ambient light housing assembly of the car front door is equipped with cooling components on the fixed mold assembly and the moving mold assembly. These components cool the housing during the injection molding process, accelerate the molding speed of the housing, and thus improve the production efficiency of the equipment.

[0021] The injection mold for the LED ambient light housing assembly of the car front door has a heating device installed in the pouring connection block to increase the flow rate of the colloid and ensure the yield rate of injection molding. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of an injection mold for an automotive front door LED ambient light housing assembly, as described in an embodiment of this application.

[0023] Figure 2 This is a schematic diagram of the casting mechanism and heating component of the injection mold for the automotive front door LED ambient light housing assembly according to an embodiment of this application;

[0024] Figure 3 This is a schematic diagram of the second cooling component of the injection mold for the automotive front door LED ambient light housing assembly, as described in an embodiment of this application.

[0025] Figure 4 This is a schematic diagram of the moving mold assembly and moving mold core of the injection mold for the automotive front door LED ambient light housing assembly, which is an embodiment of this application.

[0026] Figure 5 A schematic diagram of the first cooling component and ejection mechanism of the injection mold for the automotive front door LED ambient light housing assembly according to an embodiment of this application;

[0027] Figure 6 This is a schematic diagram of the fixed mold core and gating mechanism of the injection mold for the automotive front door LED ambient light housing assembly, which is an embodiment of this application.

[0028] in:

[0029] 1. Fixed mold mechanism; 2. Demolding mechanism; 3. Moving mold mechanism; 11. First fixed plate; 12. Panel; 13. Fixed mold; 14. Fixed mold core; 15. Gating mechanism; 121. Heating assembly; 013. Heating pipe; 014. Third water inlet; 015. Third water outlet; 131. Second cooling assembly; 004. Second water inlet; 005. Second water outlet; 006. Second cooling water pipe; 141. First contouring part; 142. Contouring column assembly; 151. Glue inlet pipe; 152. Gating connection block; 153. Runner pipe; 008. Heating device; 21. Demolding assembly; 211. Drive mechanism; 212, Positioning assembly; 213, Sliding seat; 214, Third contouring part; 011, Positioning block; 012, Positioning post; 31, Second fixing plate; 32, Moving mold; 33, Moving mold core; 331, Second contouring part; 34, Ejection mechanism; 321, First cooling assembly; 001, First water inlet; 002, First water outlet; 003, First cooling water pipe; 341, First ejector plate; 342, Second ejector plate; 343, Positioning plate; 344, Contouring ejector assembly; 345, Elastic guide assembly; 346, Support assembly; 009, Guide post; 010, Spring. Detailed Implementation

[0030] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0031] like Figures 1-6 As shown, an embodiment of this application provides an injection mold for an LED ambient light housing assembly for a car front door, including a fixed mold mechanism 1, a demolding mechanism 2, and a moving mold mechanism 3, wherein the demolding mechanism 2 is located between the fixed mold mechanism 1 and the moving mold mechanism 3.

[0032] The fixed mold mechanism 1 includes a first fixed plate 11, a panel 12, a fixed mold 13 and a fixed mold core 14 that can be detachably connected. A first contouring part 141 is provided on the fixed mold core 14. A casting mechanism 15 is provided through the first fixed plate 11, the panel 12, the fixed mold 13 and the fixed mold core 14.

[0033] The moving mold mechanism 3 includes a second fixed plate 31, a moving mold 32 and a moving mold core 33 that are fixedly connected. The moving mold core 33 is provided with a second contouring part 331 and symmetrically arranged contouring column assemblies 142 for shaping the through holes of the shell. An ejection mechanism 34 is provided between the second fixed plate 31 and the moving mold 32.

[0034] The demolding mechanism 2 includes two symmetrically arranged demolding components 21, which are located on both sides of the fixed mold core 14 and the moving mold core 33. Each demolding component 21 includes a drive mechanism 211, a positioning component 212 for positioning the fixed mold core 13, a sliding seat 213, and a third contouring part 214. The drive mechanism 211 is installed on the side of the moving mold core 32, the positioning component 212 is installed on the sliding seat 213, and the third contouring part 214 is installed on one end of the sliding seat 213. The sliding seat 213 slides with the moving mold core 32, and the drive end of the drive mechanism 211 is connected to the sliding seat 213.

[0035] The first contouring part 141, the second contouring part 331 and the two third contouring parts 214 form a molding cavity. The casting mechanism 15 is connected to the molding cavity, and the ejection mechanism 34 is used to eject the shell in the molding cavity from the mold.

[0036] Specifically, the fixed mold mechanism 1 is driven by the drive mechanism 211 to move towards the moving mold mechanism 3 to close. The positioning component 212 of the demolding component 21 positions the fixed mold 13 component of the fixed mold mechanism 1, so that the first contouring part 141 on the fixed mold core 14, the second contouring part 331 on the moving mold core 33 and the third contouring part 214 of the two demolding components 21 close, forming two symmetrically arranged shell molding cavities. Then, the molten plastic material flows from the injection pipe 151 of the injection mechanism 15 into the through hole of the injection connecting block 152 and the two flow channel pipes 153, and finally into the molding cavity. The contour column assembly 142 shapes the opening of the shell. After the plastic material in the molding cavity is cooled and solidified, the drive mechanism 211 drives the fixed mold mechanism 1 and the moving mold mechanism 3. The drive mechanism 211 of the two demolding components 21 drives the sliding seat 213 to drive the third contour part 214 to leave the molding cavity and demold the left and right sides of the shell. Then, the ejection mechanism 34 ejects the injection-molded shell from the moving mold core 33 for demolding. Finally, the unloading mechanism unloads the shell.

[0037] In the above structure, the two symmetrically arranged demolding components 21 form a molding cavity with the moving mold core 33 and the fixed mold core 14, which not only realizes the injection molding of the shell, but also improves the injection efficiency and injection accuracy. At the same time, the shell in the molding cavity can be demolded, which improves the demolding efficiency.

[0038] like Figure 5As shown, in one embodiment, a first cooling component 321 for cooling the molding cavity is provided through the moving mold 32 of the injection mold for the automotive front door LED ambient light housing assembly. The first cooling component 321 includes several first water inlets 001 and several first water outlets 002. A first cooling water pipe 003 passing through the moving mold core 33 is provided between the first water inlets 001 and the first water outlets 002. Multiple first water inlets 001 are provided at one end of the moving mold 32, and multiple first water outlets 002 are provided at the other end. One end of the first cooling water pipe 003 is connected to the first water inlet 001, and the other end of the first cooling water pipe 003 is connected to the first water outlet 002. The pipe body of the first cooling water pipe 003 passes through the moving mold 32 and the moving mold core 33 in an n-shape. This arrangement facilitates the cooling of the moving mold 32 and the moving mold core 33, thereby cooling the molding cavity, accelerating the molding speed of the housing inside the molding cavity, and thus improving the production efficiency of the equipment.

[0039] like Figure 3 As shown, in one embodiment, a second cooling assembly 131 for cooling the molding cavity is respectively provided through the fixed mold 13 of the injection mold for the automotive front door LED ambient light housing assembly. The second cooling assembly 131 includes a plurality of second water inlets 004 and a plurality of second water outlets 005. A second cooling water pipe 006 passing through the fixed mold core 14 is provided between the second water inlets 004 and the second water outlets 005. A plurality of second water inlets 004 are provided at one end of the fixed mold 13, and a plurality of second water outlets 005 are provided at the other end of the fixed mold 13. One end of the second cooling water pipe 006 is connected to the second water inlet 004, and the other end of the second cooling water pipe 006 is connected to the second water outlet 005. The pipe body of the second cooling water pipe 006 passes through the fixed mold 13 and the fixed mold core 14 in a U-shape. This arrangement facilitates the cooling of the fixed mold 13 and the fixed mold core 14, thereby cooling the molding cavity, accelerating the molding speed of the housing inside the molding cavity, and thus improving the production efficiency of the equipment.

[0040] like Figure 2 As shown, in one embodiment, the panel 12 of the injection mold for the automotive front door LED ambient light housing assembly is provided with a heating component 121 for heating the casting mechanism. The heating component 121 includes several heating tubes 013, with a third inlet 014 and a third outlet 015 at both ends of the heating tubes 013. Hot water is introduced into the third inlet 014, and the hot water heats the casting mechanism 15 on the panel 12 through the heating tubes 013, increasing the flow rate of the plastic material, which finally flows out from the third outlet 015. This arrangement increases the flow rate of the plastic material and accelerates the injection molding efficiency of the housing.

[0041] like Figure 2 and Figure 3As shown, in one embodiment, the gating mechanism 15 of the injection mold for the automotive front door LED ambient light housing assembly includes a gating pipe 151, a gating connecting block 152, and two symmetrically arranged runner pipes 153. The gating connecting block 152 is installed inside the panel 12. The gating pipe 151 communicates with the two runner pipes 153 through the gating connecting block 152. The gating connecting block 152 is provided with a through hole for communicating between the gating pipe 151 and the runner pipes 153, and a heating device 008 for heating the gating pipe 151 and the runner pipes 153. The two runner pipes 153 pass through the fixed mold 13 and the fixed mold core 14, respectively, and communicate with the molding cavity. The molten plastic material flows from the gating pipe 151 into the through hole of the gating connecting block 152, then into the two runner pipes 153, and finally into the molding cavity. The casting connector 152 allows for the smooth and even distribution of molten plastic material to the two runners 153, reducing mold filling time. The heating device 008 is a heating wire, which heats the plastic material within the casting connector 152, ensuring the fluidity of the plastic material and preventing injection defects caused by heat loss during the flow process, thus ensuring a high yield rate.

[0042] like Figure 5 As shown, in one embodiment, the ejection mechanism 34 of the injection mold for the LED ambient light housing assembly of the car front door includes a first ejector plate 341, a second ejector plate 342, and two vertically symmetrically arranged positioning plates 343. The second ejector plate 342 is located between the first ejector plate 341 and the second fixing plate 31. The first ejector plate 341 and the second ejector plate 342 are slidably engaged with the two positioning plates 343. The first ejector plate 341 is provided with a plurality of contour ejector assemblies 344 for ejecting the housing in the molding cavity. The first ejector plate 341 is connected to the moving mold 32 through an elastic guide assembly 345. The second fixing plate 31 is provided with a support assembly 346. The support assembly 346 passes through the second ejector plate 342, the first ejector plate 341, and the moving mold 32 in sequence and is connected to the moving mold core 33. After the frame in the molding cavity is injection molded, the drive mechanism 211 drives the second ejector plate 342 to push the first ejector plate 341, which in turn moves multiple contour ejector assemblies 344 toward the moving mold 32 and the moving mold core 33. The contour ejector assemblies 344 pass through the moving mold 32 and the moving mold core 33 to eject the shell in the molding cavity. Then, the drive mechanism 211 drives the second ejector plate 342 to return to its original position, and the first ejector plate 341 is reset by pressing against the second ejector plate 342 under the force of the elastic guide assembly 345. This arrangement facilitates the ejection of the injection-molded shell from the moving mold core 33.

[0043] like Figure 5As shown, in one embodiment, the elastic guide assembly 345 of the injection mold for the automotive front door LED ambient light housing assembly includes four guide posts 009 and four springs 010. The four springs 010 are sequentially sleeved on the four guide posts 009. One end of the spring 010 abuts against the first ejector plate 341, and the other end of the spring 010 abuts against the moving mold 32. When the drive mechanism 211 drives the second ejector plate 342 to move the first ejector plate 341 and multiple contour ejector assemblies 344 toward the moving mold 32, the springs 010 are compressed. When the drive mechanism 211 drives the second ejector plate 342 to reset, the first ejector plate 341 is reset by the force of the springs 010. This arrangement facilitates the reset of the first ejector plate 341.

[0044] like Figure 4 As shown, in one embodiment, the positioning component 212 of the injection mold for the automotive front door LED ambient light housing assembly includes a positioning block 011 and a plurality of positioning pins 012. The positioning block 011 is mounted on a sliding seat 213, and the plurality of positioning pins 012 are sequentially and spaced apart on the positioning block 011. The plurality of positioning pins 012 are used for positioning and engaging with the fixed mold 13. When the fixed mold 13 and the moving mold 32 are closed, the plurality of positioning pins 012 on the positioning block 011 extend into the positioning holes of the fixed mold 13 to position the fixed mold 13 and ensure the stability of the closure of the fixed mold 13 and the moving mold 32.

[0045] like Figure 4 As shown, in one embodiment, the drive mechanism 211 of the injection mold for the automotive front door LED ambient light housing assembly is a cylinder or a motor. The cylinder or motor facilitates the driving of the sliding seat 213 to move the third contouring part 214 horizontally.

[0046] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. An injection mold for an LED ambient light housing assembly for a car front door, characterized in that, It includes a fixed mold mechanism (1), a demolding mechanism (2) and a moving mold mechanism (3), with the demolding mechanism (2) located between the fixed mold mechanism (1) and the moving mold mechanism (3); The fixed mold mechanism (1) includes a first fixed plate (11), a panel (12), a fixed mold (13), and a fixed mold core (14) that can be detachably connected. The fixed mold core (14) is provided with a first contouring part (141) and symmetrically arranged contouring column assemblies (142) for shaping the through holes of the shell. A casting mechanism (15) is provided through the first fixed plate (11), the panel (12), the fixed mold (13), and the fixed mold core (14). The moving mold mechanism (3) includes a second fixed plate (31), a moving mold (32) and a moving mold core (33) that are fixedly connected. A second contouring part (331) is provided on the moving mold core (33), and an ejection mechanism (34) is provided between the second fixed plate (31) and the moving mold (32). The demolding mechanism (2) includes two demolding components (21) arranged symmetrically. The two demolding components (21) are located on both sides of the fixed mold core (14) and the moving mold core (33). The demolding component (21) includes a drive mechanism (211), a positioning component (212) for positioning the fixed mold (13), a sliding seat (213) and a third contouring part (214). The drive mechanism (211) is installed on the side of the moving mold (32), the positioning component (212) is installed on the sliding seat (213), and the third contouring part (214) is installed on one end of the sliding seat (213). The sliding seat (213) slides with the moving mold (32), and the drive end of the drive mechanism (211) is connected to the sliding seat (213). The first contouring part (141), the second contouring part (331) and the two third contouring parts (214) form a molding cavity. The casting mechanism (15) is connected to the molding cavity, and the ejection mechanism (34) is used to eject the shell in the molding cavity from the mold.

2. The injection mold for the automotive front door LED ambient light housing assembly according to claim 1, characterized in that, A first cooling component (321) for cooling the molding cavity is provided through the moving mold (32). The first cooling component (321) includes a plurality of first water inlets (001) and a plurality of first water outlets (002). A first cooling water pipe (003) passing through the moving mold core (33) is provided between the first water inlets (001) and the first water outlets (002).

3. The injection mold for the automotive front door LED ambient light housing assembly according to claim 1, characterized in that, The fixed mold (13) is provided with a second cooling component (131) for cooling the molding cavity. The second cooling component (131) includes a plurality of second water inlets (004) and a plurality of second water outlets (005). A second cooling water pipe (006) passing through the fixed mold core (14) is provided between the second water inlets (004) and the second water outlets (005).

4. The injection mold for the automotive front door LED ambient light housing assembly according to claim 1, characterized in that, The panel (12) is provided with a heating component (121) for heating the pouring mechanism. The heating component (121) includes several heating tubes (013), and the two ends of the heating tubes (013) are provided with a third water inlet (014) and a third water outlet (015).

5. The injection mold for the automotive front door LED ambient light housing assembly according to claim 1, characterized in that, The casting mechanism (15) includes a glue inlet pipe (151), a casting connecting block (152), and two symmetrically arranged runner pipes (153). The casting connecting block (152) is installed inside the panel (12). The glue inlet pipe (151) is connected to the two runner pipes (153) through the casting connecting block (152). The casting connecting block (152) is provided with a through hole for connecting the glue inlet pipe (151) and the runner pipes (153) and a heating device (008) for heating the glue inlet pipe (151) and the runner pipes (153). The two runner pipes (153) pass through the fixed mold (13) and the fixed mold core (14) respectively and are connected to the molding cavity.

6. The injection mold for the automotive front door LED ambient light housing assembly according to claim 1, characterized in that, The ejection mechanism (34) includes a first ejector plate (341), a second ejector plate (342), and two vertically symmetrically arranged positioning plates (343). The second ejector plate (342) is located between the first ejector plate (341) and the second fixed plate (31). The first ejector plate (341) and the second ejector plate (342) are slidably engaged with the two positioning plates (343). The first ejector plate (341) is provided with a plurality of contour ejector assemblies (344) for ejecting the inner shell of the molding cavity. The first ejector plate (341) is connected to the moving mold (32) through an elastic guide assembly (345). The second fixed plate (31) is provided with a support assembly (346). The support assembly (346) passes through the second ejector plate (342), the first ejector plate (341), and the moving mold (32) in sequence and is connected to the moving mold core (33).

7. The injection mold for the automotive front door LED ambient light housing assembly according to claim 6, characterized in that, The elastic guide assembly (345) includes four guide posts (009) and four springs (010). The four springs (010) are sequentially sleeved on the four guide posts (009). One end of the spring (010) abuts against the first ejector plate (341), and the other end of the spring (010) abuts against the moving mold (32).

8. The injection mold for the automotive front door LED ambient light housing assembly according to claim 1, characterized in that, The positioning component (212) includes a positioning block (011) and a plurality of positioning posts (012). The positioning block (011) is mounted on the sliding seat (213), and the plurality of positioning posts (012) are sequentially and spaced apart on the positioning block (011). The plurality of positioning posts (012) are used to position and cooperate with the fixed mold (13).

9. The injection mold for the automotive front door LED ambient light housing assembly according to claim 1, characterized in that, The drive mechanism (211) is a cylinder or an electric motor.

Images