Self-skinning handrail injection molding device and injection molding method

Abstract

The present invention discloses a self-skinning handrail injection molding device and an injection molding method, and relates to the technical field of injection molding. The self-skinning handrail injection molding device comprises a rotating frame, a mounting part arranged above the rotating frame, a mold part arranged on the mounting part, a switch device arranged on the mold part, a limit device arranged on the mold part, and a driving device arranged in the mounting part for driving the switch device and the limit device, wherein: the corresponding position of a mounting part on the rotating frame is an injection molding area, and a bubbling area, a feeding area and a spraying area are sequentially arranged on one side of the mounting part. The invention can control the upper mold to automatically unfold and close, avoid the need for manual operation, facilitate the staff to take out and feed the molded parts, speed up the feeding speed, and shorten the device downtime, thereby improving the efficiency of the self-skinning handrail production, and has a simple structure, convenient operation, reduced production costs, and good use effect.

Description

Technical Field

[0001] The invention relates to the technical field of injection molding, in particular to an injection molding device and an injection molding method for a self-skinning handrail. Background Art

[0002] Self-skinning armrests are a type of polyurethane foam product, which are usually used to make home and office supplies such as armrests and seats. This material has the characteristics of strong wear resistance, waterproofness, deformation resistance, crack resistance, and UV resistance. The hardness can be adjusted according to customer needs. The surface crusting strength is good, the appearance is beautiful, and it is an environmentally friendly product. The application range of self-skinning armrests is wide, including but not limited to the automotive industry, sports equipment, medical equipment, household goods and other fields. For example, in the automotive industry, self-skinning armrests can be used to make bumpers, steering wheels, armrest pads, etc.; in the field of medical equipment, it can be used to make dental one-piece seats, operating table tops, wheelchair armrests, etc.; in household goods, it can be used to make seat cushion armrests, anti-fatigue and anti-slip floor mats, etc. In addition, self-skinning armrests can also be used in toys and packaging.

[0003] For example, the utility model patent with announcement number CN221292156U is a seat armrest injection molding device, which effectively solves the problem of slow removal speed of molded parts during current unloading, resulting in low processing efficiency. The device comprises a base, a top plate is provided above the base, support columns are installed at equal angles between the base and the top plate, a lower mold is installed at the top of the base, a lower mold groove is opened at equal angles at the top of the lower mold, one end of the lower mold groove penetrates to the back side of the lower mold, plate grooves are symmetrically opened on the inner walls of both sides of the lower mold groove near the back side of the lower mold, an upper mold is provided above the lower mold, injection tubes are installed at equal distances on the top of the upper mold, and the injection tubes correspond to the lower mold groove one by one. The utility model is convenient for removing the molded parts by opening one end of the lower mold groove. After molding, the electromagnet is energized to generate repulsive force on the magnetic block, thereby pushing the push rod to move toward the inside of the lower mold groove, thereby pushing out the molded parts inside the lower mold groove, facilitating unloading and improving work efficiency.

[0004] When the existing self-skinning handrail injection molding device is in use, the material is injected into the lower mold of the mold through the injection molding machine and the nozzle, the upper mold is closed, the molding operation is performed, and then the material is taken out. In this process, the staff is required to open the upper mold in turn, and then take out the molded parts in multiple lower molds in turn. The production operation is cumbersome and affects the overall production efficiency. Therefore, we propose a self-skinning handrail injection molding device and injection molding method to solve the above problems. Summary of the invention

[0005] In view of the deficiencies in the prior art, the present invention provides a self-skinning handrail injection molding device and injection molding method, which solves the problem that during the injection molding production process, workers need to perform repeated manual operations, which makes the production operations cumbersome and affects the overall production efficiency.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solutions: a self-skinning handrail injection molding device, comprising a rotating frame, a mounting member arranged above the rotating frame, a mold member arranged on the mounting member, a switch device arranged on the mold member, a limit device arranged on the mold member, and a driving device arranged in the mounting member for driving the switch device and the limit device, wherein: the mounting member is arranged in a circular array along the circumferential direction above the rotating frame, the mounting member is mounted on the rotating frame by screws, the mold member is mounted on the mounting member by screws, and is used to mount multiple mold members on the rotating frame, the corresponding position of a mounting member on the rotating frame is an injection molding area, and a bubbling area, a feeding area and a spraying area are sequentially arranged on one side of the mounting member; the mold member comprises a lower mold and an upper mold hinged thereto, a molding groove is provided on the inner side of the lower mold, the switch device is arranged on both sides of the upper mold, and is used to control the opening and closing of the upper mold, and the limit device is arranged on the upper mold and the lower mold, and is used to limit the upper mold; the switch device comprises: a connecting rod, the connecting rod is symmetrically arranged on both sides of the outer side of the upper mold, and the lower side of the connecting rod is symmetrically arranged on both sides of the outer side of the upper mold. The end of the adjusting plate is slidably connected with an adjusting plate, the other end of the adjusting plate is connected with a first gear member, two groups of the first gear members are meshed and connected, a connecting member is installed below the first gear member on one side, and the connecting member is installed on the driving device, which is used to drive the adjusting plate to rotate when the driving device is in operation, so that the connecting rod switches the upper mold; the limiting device includes: a limiting rod, the limiting rod is symmetrically arranged on the upper mold, a rotating universal joint is arranged below the limiting rod, two meshed second bevel gears are arranged between the two rotating universal joints, and one of the second bevel gears is installed on the driving device, which is used to drive the limiting rod to rotate when the driving device is in operation, limit and release the upper mold; the driving device includes: a driving motor, the driving motor is installed on the mounting member, and the output end of the driving motor is provided with two meshed first bevel gears, the lower first bevel gear is connected with a second gear member, which is used to adjust the inclination angle of the connecting rod, and the upper first bevel gear is connected with a third gear member, which is used to adjust the position of the limiting rod.

[0007] Furthermore, the rotating frame includes a turntable, a support and a rotating motor, the support is arranged at the bottom of the turntable, the turntable is installed at the output end of the rotating motor, and the rotating motor is installed in the support by screws to drive the turntable to rotate; a vibration motor is installed at the bottom of the turntable to control the vibration of the turntable.

[0008] Furthermore, an injection molding device is arranged outside the injection molding area for injecting material into the lower mold, a material receiving box is arranged outside the material discharge area for placing molded parts, and a spraying device is arranged outside the spraying area for spraying a release agent in the lower mold and the upper mold.

[0009] Furthermore, the mounting component includes an installation box, a mounting plate and a bracket, the bracket is mounted on the turntable by screws, the installation box is mounted on the bracket by screws, the mounting plate is mounted on the installation box, and the switch device, limit device and drive device are all mounted on the installation box.

[0010] Furthermore, convex plates are respectively provided on both sides of the upper mold and the lower mold, the lower mold is arranged on a mounting plate, and the convex plates on both sides of the lower mold are mounted on the mounting plate by screws; the convex plates on both sides of the upper mold are connected with connecting plates by screws, and one end of the connecting rod is rotatably mounted on the outer side of the connecting plate near the hinge between the upper mold and the lower mold.

[0011] Furthermore, a sliding rod is rotatably installed at the lower end of the connecting rod, and the sliding rod is in an inverted L shape. The sliding rod is slidably connected to a connecting groove, and the connecting groove is opened on the adjustment plate; the sliding rod is connected with a first sliding groove through and through, and the adjustment plate is connected with a second sliding groove, and the first sliding groove and the second sliding groove are both opened on the side wall of the installation box.

[0012] Furthermore, the first gear member includes a first gear and a second gear, the first gear is installed on the end of the adjustment plate away from the connecting rod and is coaxial with the adjustment plate, and the second gear is meshingly arranged on the side of the first gear away from the connecting rod; the two second gears are meshingly connected, and the first gear and the second gear are respectively installed on the bottom of the mounting plate through bearings and are arranged in a mounting box; the connecting member includes two rotating wheels and a belt sleeved on the outside thereof, one of the rotating wheels is installed at the bottom of one of the second gears, and the other rotating wheel is installed on the second gear member.

[0013] Furthermore, the limit rod is in an inverted L-shape, and the upper mold and the lower mold are respectively provided with limit grooves matched with the limit rod. The limit rod includes a horizontal rod portion and a vertical rod portion, and the vertical rod portion passes through the lower mold and the upper mold from bottom to top, and the horizontal rod portion is arranged above the upper mold; the lower end of the vertical rod portion passes through the mounting plate and extends into the mounting box, a fixing rod is installed at the lower end of the vertical rod portion, the rotating universal joint is installed at the lower end of the fixing rod, a mounting rod is installed between the two rotating universal joints, the fixing rod is installed on the mounting plate through a bearing, the mounting rod is installed in the mounting box through a bearing, and the other second bevel gear is installed on the mounting rod.

[0014] Furthermore, the driving motor is installed at the bottom of the mounting box by screws, and the first bevel gear below is installed at the output end of the driving motor; the second gear member includes a third gear and a fourth gear connected to it with an interval meshing connection, the third gear is installed at the bottom of a rotating wheel away from the second gear, and the fourth gear is installed on the first bevel gear on the output end of the driving motor; the third gear member includes a sixth gear and a fifth gear connected to it with an interval meshing connection, the fifth gear is installed on one side of the first bevel gear above, and the sixth gear is installed on one side of a second bevel gear away from the mounting rod, and the fourth gear and the fifth gear are both irregular gears.

[0015] A self-skinning handrail injection molding method comprises the following steps:

[0016] S1, the rotating motor drives the turntable to rotate, so that a mold part in the bubbling area moves to the unloading area, and the rotating motor stops operating;

[0017] S2, the driving motor operates to drive the first bevel gear at the output end to rotate, the first bevel gear drives the second gear member to operate, and drives another first bevel gear to rotate, and the other first bevel gear drives the third gear member to operate;

[0018] S21, the fifth gear in the third gear member is first meshed and connected with the sixth gear, and the mounting rod is driven to rotate through the two second bevel gears, and the limit rod is driven to rotate by rotating the universal joint, so that the cross bar portion is moved away from the upper surface of the upper mold, thereby releasing the limit on the upper mold;

[0019] S22, the driving motor continues to operate, the fifth gear is separated from the sixth gear, and then the fourth gear in the second gear member is meshed with the third gear. Under the setting of the belt, the two rotating wheels rotate, driving a second gear to rotate, and the second gear drives a first gear meshed with it and another second gear to rotate;

[0020] S23, the first gear rotates, driving the adjustment plate to swing, and the slide bar is moved, so that the slide bar slides in the first slide groove, and as the adjustment plate swings, the slide bar moves in the connecting groove, and the slide bar moves, pushing the connecting rod, and the upper mold is unfolded by changing the inclination angle of the connecting rods on both sides;

[0021] S3. The staff in the unloading area can take out the molded parts in the lower mold and place them in the receiving box;

[0022] S4, after the molded part in the mold is unloaded, the rotating motor continues to drive the turntable to rotate, so that the mold part unloaded in the unloading area moves to the spraying area, the rotating motor stops operating, and the mold release agent is sprayed on it through the spraying device;

[0023] S5, the rotating motor continues to drive the turntable to rotate, so that the mold parts sprayed in the spraying area move to the injection molding area, the rotating motor stops operating, and the material is injected into the lower mold through the injection molding device;

[0024] S6, the rotating motor continues to control the rotation of the turntable, so that the next mold part moves to the injection molding area, and during the rotation process, the driving motor operates in the reverse direction, so that the first bevel gear at its output end rotates in the reverse direction, driving the second gear part and the third gear part to operate, so that the first gear part and the second bevel gear operate in sequence;

[0025] S61, the first gear member operates, so that the adjustment plate drives the sliding rod to reset, pulls the connecting rod, and closes the upper mold, and then the second bevel gear operates, so that the mounting rod rotates in the opposite direction, and the limit rod is driven to reset by rotating the universal joint, and the cross bar part is attached to the upper surface of the upper mold, so as to limit the upper mold;

[0026] S7, the rotary motor controls the turntable to rotate, so that the mold parts after injection molding are moved to the bubbling area, and the empty mold parts after the next spraying are moved to the injection molding area, and the operation is repeated.

[0027] The present invention has the following beneficial effects:

[0028] (1) The self-skinning handrail injection molding device and injection molding method, through the use of the set mold parts, switch devices, limit devices and drive devices, are used to control the upper mold to automatically expand and close, avoiding the need for manual operation, and the upper mold can be expanded, which is convenient for the staff to take out and unload the molded parts, thereby speeding up the unloading speed. In addition, through the arrangement of the injection molding area, the bubbling area, the unloading area, the spraying area, the multiple mold parts and the rotating frame, the empty mold parts can be sprayed with a release agent and the raw materials can be injected during the bubbling, cooling and solidification of the raw materials inside some mold parts, and the molded parts in the unloading area can be unloaded. Multiple steps can be completed at the same time, so that the device does not need to stop for a long time, thereby improving the efficiency of the self-skinning handrail production.

[0029] (2) The self-skinning handrail injection molding device and injection molding method, through the use of the connecting rod, the adjustment plate, the first gear member, the connecting member and the driving device, are used to adjust the inclination angle of the connecting rod, thereby controlling the automatic switch of the upper mold, avoiding the need for manual operation by the staff. The structure is simple and easy to operate, and one driving device can drive the switch device and the limit device to operate respectively, thereby reducing the production cost.

[0030] (3) The self-skinning handrail injection molding device and injection molding method are used in conjunction with the set limit rod, the rotating universal joint, the second bevel gear and the driving device to rotate and adjust the position of the limit rod, thereby limiting and releasing the upper mold, ensuring the connection effect between the upper mold and the lower mold, and having a good use effect.

[0031] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 It is a schematic diagram of the structure of the present invention;

[0033] Figure 2 It is a structural schematic diagram of the rotating motor and the rotating disk of the present invention;

[0034] Figure 3 It is a structural schematic diagram of the bracket and the rotating disk of the present invention;

[0035] Figure 4 It is a schematic diagram of the structure when the upper mold of the present invention is closed;

[0036] Figure 5 It is a structural schematic diagram of the upper mold of the present invention when it is unfolded;

[0037] Figure 6 It is a schematic diagram of the structure inside the installation box of the present invention;

[0038] Figure 7 It is a schematic diagram of the structure of the mounting rod and the rotating universal joint of the present invention;

[0039] Figure 8 is a schematic structural diagram of the third gear and the fourth gear of the present invention;

[0040] Fig. 9 For the present invention Figure 8 A schematic diagram of the structure from another perspective;

[0041] Fig.10 It is a schematic diagram of the structure when the present invention is used.

[0042] In the figure, 1, turntable; 2, pillar; 3, rotating motor; 4, vibration motor; 5, installation box; 6, installation plate; 7, bracket; 8, lower mold; 9, upper mold; 10, convex plate; 11, connecting plate; 12, connecting rod; 13, sliding rod; 14, adjusting plate; 15, connecting groove; 16, first sliding groove; 17, second sliding groove; 18, first gear; 19, second gear; 20, rotating wheel; 21, belt; 22, third gear; 23, fourth gear; 24, first bevel gear; 25, driving motor; 26, fifth gear; 27, sixth gear; 28, second bevel gear; 29, installation rod; 30, rotating universal joint; 31, fixing rod; 32, limiting rod; 33, limiting groove; 34, injection molding device; 35, spraying device; 36, collecting box. DETAILED DESCRIPTION

[0043] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0044] In the description of the present invention, it should be understood that the terms "opening", "upper", "lower", "thickness", "top", "middle", "length", "inside", "all around" and the like indicating orientation or positional relationship are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the components or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0045] See also Figure 1-Figure 10The embodiment of the present invention provides a technical solution: a self-skinning handrail injection molding device, comprising a rotating frame, a mounting member arranged above the rotating frame, a mold member arranged on the mounting member, a switch device arranged on the mold member, a limit device arranged on the mold member, and a driving device arranged in the mounting member for driving the switch device and the limit device, wherein: the mounting member is arranged in an annular array along the circumferential direction above the rotating frame, the mounting member is mounted on the rotating frame by screws, the mold member is mounted on the mounting member by screws, and a plurality of mold members are mounted on the rotating frame, and the rotating The corresponding position of a mounting part on the rotating frame is the injection molding area, and a bubbling area, a material discharge area and a spraying area are sequentially arranged on one side of the mounting part; the mold part includes a lower mold 8 and an upper mold 9 hinged thereto, a molding groove is opened on the inner side of the lower mold 8, a switch device is arranged on both sides of the upper mold 9, and is used to control the opening and closing of the upper mold 9, and a limit device is arranged on the upper mold 9 and the lower mold 8, and is used to limit the upper mold 9; the switch device includes: a connecting rod 12, the connecting rod 12 is symmetrically arranged on both sides of the outer side of the upper mold 9, and the lower end of the connecting rod 12 is slidably connected to an adjustment plate 14, and the adjustment plate 1 The other end is connected with a first gear member, and the two groups of first gear members are meshed and connected. A connecting member is installed below the first gear member on one side, and the connecting member is installed on the driving device, and is used to drive the adjustment plate 14 to rotate when the driving device is in operation, so that the connecting rod 12 opens and closes the upper mold 9; the limiting device includes: a limiting rod 32, which is symmetrically arranged on the upper mold 9, and a rotating universal joint 30 is arranged below the limiting rod 32, and two meshed second bevel gears 28 are arranged between the two rotating universal joints 30, and one second bevel gear 28 is installed on the driving device, and is used to drive the limiting rod 32 to rotate when the driving device is in operation, so as to limit and release the upper mold 9; the driving device includes: a driving motor 25, which is installed on the mounting member, and the output end of the driving motor 25 is provided with two meshed first bevel gears 24, and the lower first bevel gear 24 is connected with a second gear member, which is used to adjust the inclination angle of the connecting rod 12, and the upper first bevel gear 24 is connected with a third gear member, which is used to adjust the position of the limiting rod 32.

[0046] Specifically, the rotating frame includes a turntable 1, a support 2 and a rotating motor 3. The support 2 is arranged at the bottom of the turntable 1, and the turntable 1 is installed at the output end of the rotating motor 3. The rotating motor 3 is installed in the support 2 by screws to drive the turntable 1 to rotate; a vibration motor 4 is installed at the bottom of the turntable 1 to control the vibration of the turntable 1.

[0047] In this embodiment, the pillars 2 are placed on the ground to support the turntable 1, and the turntable 1 is driven to rotate by the rotating motor 3, thereby driving the multiple mold parts thereon to rotate, completing a series of self-skinning handrail production operations.

[0048] Specifically, an injection molding device 34 is provided outside the injection molding area for injecting material into the lower mold 8, a material receiving box 36 is provided outside the material discharge area for placing molded parts, and a spraying device 35 is provided outside the spraying area for spraying a release agent in the lower mold 8 and the upper mold 9.

[0049] In this embodiment, a spraying area, an injection molding area, a bubbling area and a unloading area are arranged on the outside of the turntable 1. The bubbling area is relatively large, so that the material in the mold parts after injection molding can undergo sufficient bubbling reaction, cooling and solidification. As the turntable 1 rotates, the mold parts located inside the bubbling area will reach the unloading area, the spraying area and the injection molding area in turn, and the solidified molded parts can be unloaded, and then the empty mold parts can be sprayed with release agent and injected with raw materials.

[0050] Specifically, the mounting parts include an installation box 5, a mounting plate 6 and a bracket 7. The bracket 7 is mounted on the turntable 1 by screws, the installation box 5 is mounted on the bracket 7 by screws, the mounting plate 6 is mounted on the installation box 5, and the switch device, the limit device and the drive device are all mounted on the installation box 5.

[0051] In this embodiment, the mounting box 5 is mounted on the turntable 1 through the bracket 7, and the mounting box 5 is supported. The mounting box 5 and the mounting plate 6 are an integrated structure for installing the switch device, the limit device, the drive device and the mold parts.

[0052] Specifically, convex plates 10 are respectively provided on both sides of the upper mold 9 and the lower mold 8, and the lower mold 8 is arranged on the mounting plate 6. The convex plates 10 on both sides of the lower mold 8 are installed on the mounting plate 6 by screws, which are used to limit the installation of the lower mold 8; the convex plates 10 on both sides of the upper mold 9 are connected with the connecting plate 11 by screws, and one end of the connecting rod 12 is rotatably installed on the outer side of the connecting plate 11 near the end of the hinge between the upper mold 9 and the lower mold 8, and the lower end of the connecting rod 12 is rotatably installed with a sliding rod 13, and the sliding rod 13 is in an inverted L shape. The sliding rod 13 is slidably connected with a connecting groove 15, and the connecting groove 15 is opened on the adjusting plate 14; the sliding rod 13 is connected with a first sliding groove 16, and the adjusting plate 14 is connected with a second sliding groove 17. The first sliding groove 16 is connected with the first sliding groove 17. 16 and the second slide groove 17 are both opened on the side wall of the installation box 5, the first gear member includes a first gear 18 and a second gear 19, the first gear 18 is installed on the end of the adjustment plate 14 away from the connecting rod 12, and is coaxial with the adjustment plate 14, and the second gear 19 is meshed and arranged on the side of the first gear 18 away from the connecting rod 12; the two second gears 19 are meshed and connected, the first gear 18 and the second gear 19 are respectively installed at the bottom of the installation plate 6 through bearings, and are arranged in the installation box 5; the connecting member includes two rotating wheels 20 and a belt 21 sleeved on the outside thereof, one rotating wheel 20 is installed at the bottom of one of the second gears 19, and the other rotating wheel 20 is installed on the second gear member.

[0053] In this embodiment, the first gear 18 is welded to the adjustment plate 14, the slide bar 13 is rotatably connected to the connecting rod 12, the second gear member drives one of the rotating wheels 20 to rotate, and drives the other rotating wheel 20 to rotate through the provided belt 21, thereby driving one of the second gears 19 to rotate, and the second gear 19 drives a first gear 18 and another second gear 19 meshing with it to rotate. The rotation of the first gear 18 drives the adjustment plate 14 to swing, driving the slide bar 13 to slide in the first slide groove 16, and the adjustment plate 14 to slide in the second slide groove 17. When the adjustment plate 14 swings, the slide bar 13 moves in the connecting groove 15, and the slide bar 13 moves, pushing the connecting rod 12, so that the inclination angle of the connecting rod 12 changes, and the upper mold 9 is unfolded to take out the molded part and perform material injection molding.

[0054] Specifically, the limit rod 32 is in an inverted L-shape, and the upper mold 9 and the lower mold 8 are respectively provided with limit grooves 33 adapted to the limit rod 32. The limit rod 32 includes a horizontal rod portion and a vertical rod portion. The vertical rod portion passes through the lower mold 8 and the upper mold 9 from bottom to top, and the horizontal rod portion is arranged above the upper mold 9; the lower end of the vertical rod portion passes through the mounting plate 6 and extends into the mounting box 5, and a fixing rod 31 is installed at the lower end of the vertical rod portion, and a rotating universal joint 30 is installed at the lower end of the fixing rod 31, and a mounting rod 29 is installed between the two rotating universal joints 30, and the fixing rod 31 is installed on the mounting plate 6 through a bearing, and the mounting rod 29 is installed in the mounting box 5 through a bearing, and another second bevel gear 28 is installed on the mounting rod 29.

[0055] In this embodiment, the second bevel gear 28 drives the mounting rod 29 to rotate, and drives the fixing rod 31 to rotate through the rotating universal joints 30 at both ends, thereby driving the limiting rod 32 at the upper end of the fixing rod 31 to rotate ninety degrees, so that the cross bar portion in the limiting rod 32 is separated from the upper surface of the upper mold 9, thereby releasing the limit on the upper mold 9.

[0056] Specifically, the driving motor 25 is installed at the bottom of the mounting box 5 by screws, and the first bevel gear 24 below is installed at the output end of the driving motor 25; the second gear member includes a third gear 22 and a fourth gear 23 connected to it with an interval meshing connection, the third gear 22 is installed at the bottom of a rotating wheel 20 away from the second gear 19, and the fourth gear 23 is installed on the first bevel gear 24 on the output end of the driving motor 25; the third gear member includes a sixth gear 27 and a fifth gear 26 connected to it with an interval meshing connection, the fifth gear 26 is installed on one side of the first bevel gear 24 above, and the sixth gear 27 is installed on one side of a second bevel gear 28 away from the mounting rod 29, and the fourth gear 23 and the fifth gear 26 are both irregular gears.

[0057] In this embodiment, the tooth blocks on the fourth gear 23 and the fifth gear 26 are staggered, and the radius of the fourth gear 23 is larger than that of the third gear 22. When the upper mold 9 is unfolded, the drive motor 25 operates so that the fifth gear 26 is first meshed and connected with the sixth gear 27. The radius of the fifth gear 26 is larger than that of the sixth gear 27. The second bevel gear 28 drives the mounting rod 29 to rotate, and the limit rod 32 is rotationally adjusted. When the limit rod 32 rotates ninety degrees, the fifth gear 26 is separated from the sixth gear 27, and the drive motor 25 continues to operate so that the fourth gear 23 is meshed and connected with the third gear 22, so that the first gear member operates to drive the adjustment plate 14 and the connecting rod 12 to move, thereby controlling the upper mold 9 to unfold.

[0058] A self-skinning handrail injection molding method comprises the following steps:

[0059] S1, the rotating motor 3 drives the turntable 1 to rotate, so that a mold part in the bubbling area moves to the unloading area, and the rotating motor 3 stops operating;

[0060] S2, the driving motor 25 operates to drive the first bevel gear 24 at the output end to rotate, the first bevel gear 24 drives the second gear member to operate, and drives another first bevel gear 24 to rotate, and the other first bevel gear 24 drives the third gear member to operate;

[0061] S21, the fifth gear 26 in the third gear member is first meshed and connected with the sixth gear 27, and the mounting rod 29 is driven to rotate through the two second bevel gears 28, and the limit rod 32 is driven to rotate by rotating the universal joint 30, so that the cross bar portion is moved away from the upper surface of the upper mold 9, thereby releasing the limit on the upper mold 9;

[0062] S22, the driving motor 25 continues to operate, the fifth gear 26 and the sixth gear 27 are separated, and then the fourth gear 23 in the second gear member is meshed and connected with the third gear 22. Under the setting of the belt 21, the two rotating wheels 20 rotate, driving a second gear 19 to rotate, and the second gear 19 drives a first gear 18 and another second gear 19 meshed with it to rotate;

[0063] S23, the first gear 18 rotates, driving the adjustment plate 14 to swing, and the slide bar 13 is moved, so that the slide bar 13 slides in the first slide groove 16, and as the adjustment plate 14 swings, the slide bar 13 moves in the connecting groove 15, and the slide bar 13 moves, pushing the connecting rod 12, and the upper mold 9 is unfolded by changing the inclination angle of the connecting rods 12 on both sides;

[0064] S3, the staff in the unloading area can take out the molded parts in the lower mold 8 and place them in the receiving box 36;

[0065] S4, after the molded part in the mold is unloaded, the rotary motor 3 continues to drive the turntable 1 to rotate, so that the mold part unloaded in the unloading area moves to the spraying area, the rotary motor 3 stops operating, and the release agent is sprayed on it through the spraying device 35;

[0066] S5, the rotating motor 3 continues to drive the turntable 1 to rotate, so that the mold parts sprayed in the spraying area move to the injection molding area, the rotating motor 3 stops operating, and the material is injected into the lower mold 8 through the injection molding device 34;

[0067] S6, the rotating motor 3 continues to control the rotation of the turntable 1, so that the next mold part moves to the injection molding area, and during the rotation process, the driving motor 25 operates in the reverse direction, so that the first bevel gear 24 at its output end rotates in the reverse direction, driving the second gear part and the third gear part to operate, so that the first gear part and the second bevel gear 28 operate in sequence;

[0068] S61, the first gear member operates, so that the adjustment plate 14 drives the slide bar 13 to reset, pulls the connecting rod 12, and closes the upper mold 9, and then the second bevel gear 28 operates, so that the mounting rod 29 rotates in the opposite direction, and drives the limit rod 32 to reset by rotating the universal joint 30, and the cross bar part is in contact with the upper surface of the upper mold 9, so as to limit the upper mold 9;

[0069] S7, the rotary motor 3 controls the turntable 1 to rotate, so that the mold piece after injection molding is moved to the bubbling area, and the next empty mold piece after spraying is moved to the injection molding area, and the operation is repeated.

[0070] When in use, the rotating motor 3 drives the turntable 1 to rotate, so that a mold part in the bubbling area moves to the unloading area, the rotating motor 3 stops operating, and the driving motor 25 operates to drive the first bevel gear 24 at the output end to rotate, and the first bevel gear 24 drives the fourth gear 23 to rotate, and drives another first bevel gear 24 to rotate, and the other first bevel gear 24 drives the fifth gear 26 to rotate, and the fourth gear 23 and the fifth gear 26 rotate at the same time. In this process, the fifth gear 26 is first meshed and connected with the sixth gear 27, and the rotation of the sixth gear 27 drives the two meshed second bevel gears 28 to rotate, which is used to drive the mounting rod 29 to rotate, and through the rotating universal joints 30 at both ends of the mounting rod 29, the fixing rod 31 and the limiting rod 32 are driven to rotate. The first gear 18 is moved 90 degrees to move the crossbar away from the upper surface of the upper mold 9, and the limit on the upper mold 9 is released. As the driving motor 25 continues to rotate, the fifth gear 26 is separated from the sixth gear 27, and then the fourth gear 23 is meshed with the third gear 22, driving a rotating wheel 20 on the third gear 22 to rotate. Under the setting of the belt 21, another rotating wheel 20 is driven to rotate, thereby driving a second gear 19 above the rotating wheel 20 to rotate, and the second gear 19 drives a first gear 18 and another second gear 19 meshed with it to rotate. The first gear 18 rotates, driving the adjustment plate 14 to swing, and the slide bar 13 is moved, so that the slide bar 13 slides in the first slide groove 16, and as the adjustment plate 14 swings, the slide bar 1 3 moves in the connecting groove 15, the sliding rod 13 moves, and pushes the connecting rod 12. By changing the inclination angle of the connecting rods 12 on both sides, the upper mold 9 is unfolded, and the driving motor 25 stops operating. The staff in the unloading area can take out the molded parts in the lower mold 8 and place them in the receiving box 36. After the molded parts in the mold are unloaded, the rotating motor 3 continues to drive the turntable 1 to rotate, so that the mold parts unloaded in the unloading area move to the spraying area, the rotating motor 3 stops operating, and the release agent is sprayed on it through the spraying device 35. The rotating motor 3 continues to drive the turntable 1 to rotate, so that the mold parts sprayed in the spraying area move to the injection molding area, the rotating motor 3 stops operating, and the material is injected into the lower mold 8 through the injection molding device 34. The rotating motor 3 continues to rotate. The turntable 1 is continuously controlled to rotate so that the next mold part moves to the injection molding area. During the rotation process, the driving motor 25 operates in the reverse direction so that the first bevel gear 24 at its output end rotates in the reverse direction, driving the second gear part and the third gear part to operate, so that the first gear part and the second bevel gear 28 operate in sequence. The operation of the first gear part causes the adjustment plate 14 to drive the slide bar 13 to reset, and pulls the connecting rod 12 to close the upper mold 9. Then the third gear 22 is separated from the fourth gear 23, and the first bevel gear 24 continues to rotate. The fifth gear 26 is meshed and connected with the sixth gear 27. The second bevel gear 28 operates so that the mounting rod 29 rotates in the reverse direction, and the limit rod 32 is reset by rotating the universal joint 30. The crossbar part is attached to the upper surface of the upper mold 9 to limit the upper mold 9.The rotating motor 3 controls the turntable 1 to rotate, so that the mold parts after injection molding are moved to the bubbling area, and the empty mold parts after the next spraying are moved to the injection molding area, and the operation is repeated.

[0071] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0072] The preferred embodiments of the present invention disclosed above are only used to help illustrate the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can understand and use the present invention well. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A self-skinning handrail injection molding device, characterized in that: The invention comprises a rotating frame, a mounting member disposed above the rotating frame, a mold member disposed on the mounting member, a switch device disposed on the mold member, a limit device disposed on the mold member, and a driving device disposed in the mounting member for driving the switch device and the limit device, wherein: The mounting parts are arranged in a circular array along the circumferential direction above the rotating frame, the mounting parts are mounted on the rotating frame by screws, the mold parts are mounted on the mounting parts by screws, and are used to mount multiple mold parts on the rotating frame, the corresponding position of one mounting part on the rotating frame is the injection molding area, and a bubbling area, a material discharge area and a spraying area are sequentially arranged on one side of the mounting part; The mold part comprises a lower mold (8) and an upper mold (9) hinged thereto, a molding groove is provided on the inner side of the lower mold (8), the switch device is arranged on both sides of the upper mold (9) for controlling the opening and closing of the upper mold (9), and the limit device is arranged on the upper mold (9) and the lower mold (8) for limiting the position of the upper mold (9); The switch device comprises: a connecting rod (12), the connecting rod (12) being symmetrically arranged on both sides of the outer portion of the upper mold (9), the lower end of the connecting rod (12) being slidably connected to an adjustment plate (14), the other end of the adjustment plate (14) being connected to a first gear member, two groups of the first gear members being meshingly connected, a connecting member being installed under the first gear member on one side, the connecting member being installed on the driving device and used to drive the adjustment plate (14) to rotate when the driving device is in operation, so that the connecting rod (12) switches the upper mold (9); The limiting device comprises: a limiting rod (32), the limiting rod (32) being symmetrically arranged on the upper die (9), a rotating universal joint (30) being arranged below the limiting rod (32), two second bevel gears (28) being arranged in meshing connection between the two rotating universal joints (30), one of the second bevel gears (28) being mounted on the driving device and used for driving the limiting rod (32) to rotate when the driving device is in operation, thereby limiting and releasing the upper die (9); The driving device comprises: a driving motor (25), the driving motor (25) being mounted on a mounting member, and an output end of the driving motor (25) being provided with two meshingly connected first bevel gears (24), the lower first bevel gear (24) being connected to a second gear member for adjusting the inclination angle of the connecting rod (12), and the upper first bevel gear (24) being connected to a third gear member for adjusting the position of the limiting rod (32).

2. The self-skinning handrail injection molding device according to claim 1, characterized in that: The rotating frame comprises a rotating disk (1), a support column (2) and a rotating motor (3), wherein the support column (2) is arranged at the bottom of the rotating disk (1), the rotating disk (1) is mounted on the output end of the rotating motor (3), and the rotating motor (3) is mounted in the support column (2) by means of screws, and is used to drive the rotating disk (1) to rotate; A vibration motor (4) is installed at the bottom of the turntable (1) for controlling the vibration of the turntable (1).

3. The self-skinning handrail injection molding device according to claim 1, characterized in that: An injection molding device (34) is arranged outside the injection molding area for injecting material into the lower mold (8), a material receiving box (36) is arranged outside the material discharge area for placing molded parts, and a spraying device (35) is arranged outside the spraying area for spraying a release agent in the lower mold (8) and the upper mold (9).

4. The self-skinning handrail injection molding device according to claim 1, characterized in that: The mounting member comprises a mounting box (5), a mounting plate (6) and a bracket (7); the bracket (7) is mounted on the turntable (1) by means of screws; the mounting box (5) is mounted on the bracket (7) by means of screws; the mounting plate (6) is mounted on the mounting box (5); and the switch device, the limit device and the drive device are all mounted on the mounting box (5).

5. The self-skinning handrail injection molding device according to claim 4, characterized in that: The upper mold (9) and the lower mold (8) are respectively provided with convex plates (10), the lower mold (8) is arranged on the mounting plate (6), and the convex plates (10) on both sides of the lower mold (8) are mounted on the mounting plate (6) by means of screws; The convex plates (10) on both sides of the upper mold (9) are connected to the connecting plate (11) by screws, and one end of the connecting rod (12) is rotatably mounted on the outer side of the connecting plate (11) near the hinged joint between the upper mold (9) and the lower mold (8).

6. The self-skinning handrail injection molding device according to claim 5, characterized in that: A slide bar (13) is rotatably mounted on the lower end of the connecting rod (12), the slide bar (13) is in an inverted L-shape, and the slide bar (13) is slidably connected to a connecting groove (15), and the connecting groove (15) is provided on the adjustment plate (14); The slide rod (13) is connected to a first slide groove (16), and the adjustment plate (14) is connected to a second slide groove (17). The first slide groove (16) and the second slide groove (17) are both provided on a side wall of the installation box (5).

7. The self-skinning handrail injection molding device according to claim 6, characterized in that: The first gear member comprises a first gear (18) and a second gear (19); the first gear (18) is mounted on an end of the adjustment plate (14) away from the connecting rod (12) and is coaxial with the adjustment plate (14); the second gear (19) is meshingly arranged on a side of the first gear (18) away from the connecting rod (12); The two second gears (19) are meshed and connected, and the first gear (18) and the second gear (19) are respectively mounted on the bottom of the mounting plate (6) via bearings and are arranged in the mounting box (5); The connecting member comprises two rotating wheels (20) and a belt (21) sleeved on the outside of the two rotating wheels, one of the rotating wheels (20) is mounted on the bottom of one of the second gears (19), and the other rotating wheel (20) is mounted on the second gear member.

8. The self-skinning handrail injection molding device according to claim 7, characterized in that: The limiting rod (32) is in an inverted L-shape, and limiting grooves (33) adapted to the limiting rod (32) are respectively provided on the upper die (9) and the lower die (8), and the limiting rod (32) comprises a horizontal rod portion and a vertical rod portion, the vertical rod portion penetrates the lower die (8) and the upper die (9) from bottom to top, and the horizontal rod portion is arranged above the upper die (9); The lower end of the vertical rod portion passes through the mounting plate (6) and extends into the mounting box (5); a fixing rod (31) is mounted on the lower end of the vertical rod portion; the rotating universal joint (30) is mounted on the lower end of the fixing rod (31); a mounting rod (29) is mounted between the two rotating universal joints (30); the fixing rod (31) is mounted on the mounting plate (6) via a bearing; the mounting rod (29) is mounted in the mounting box (5) via a bearing; and another second bevel gear (28) is mounted on the mounting rod (29).

9. The self-skinning handrail injection molding device according to claim 1, characterized in that: The driving motor (25) is mounted on the bottom of the mounting box (5) by means of screws, and the first bevel gear (24) below is mounted on the output end of the driving motor (25); The second gear member comprises a third gear (22) and a fourth gear (23) meshedly connected therewith, the third gear (22) being mounted on the bottom of a rotating wheel (20) away from the second gear (19), and the fourth gear (23) being mounted on a first bevel gear (24) on the output end of a driving motor (25); The third gear member comprises a sixth gear (27) and a fifth gear (26) meshed with the sixth gear (27) at intervals, the fifth gear (26) being mounted on one side of the upper first bevel gear (24), the sixth gear (27) being mounted on one side of a second bevel gear (28) away from the mounting rod (29), and the fourth gear (23) and the fifth gear (26) being both irregular gears.

10. A self-skinning handrail injection molding method, applied to a self-skinning handrail injection molding device according to any one of claims 1 to 9, characterized in that: The following steps are involved: S1, the rotating motor (3) drives the turntable (1) to rotate, so that a mold part in the bubbling area moves to the unloading area, and the rotating motor (3) stops operating; S2, the driving motor (25) operates to drive the first bevel gear (24) at the output end to rotate, the first bevel gear (24) drives the second gear member to operate, and drives another first bevel gear (24) to rotate, and the other first bevel gear (24) drives the third gear member to operate; S21, the fifth gear (26) in the third gear member is first meshed and connected with the sixth gear (27), and the mounting rod (29) is driven to rotate through the two second bevel gears (28), and the limit rod (32) is driven to rotate through the rotating universal joint (30), so that the cross rod portion is moved away from the upper surface of the upper mold (9), thereby releasing the limit on the upper mold (9); S22, the driving motor (25) continues to operate, the fifth gear (26) and the sixth gear (27) are separated, and then the fourth gear (23) in the second gear member is meshed with the third gear (22), and under the setting of the belt (21), the two rotating wheels (20) rotate, driving a second gear (19) to rotate, and the second gear (19) drives a first gear (18) and another second gear (19) meshed with it to rotate; S23, the first gear (18) rotates, driving the adjustment plate (14) to swing, and the slide bar (13) is moved, so that the slide bar (13) slides in the first slide groove (16), and as the adjustment plate (14) swings, the slide bar (13) moves in the connecting groove (15), and the slide bar (13) moves, pushing the connecting rod (12), and the upper mold (9) is unfolded by changing the inclination angle of the connecting rods (12) on both sides; S3, the staff in the unloading area can take out the molded parts in the lower mold (8) and place them in the receiving box (36); S4, after the molded part in the mold is unloaded, the rotating motor (3) continues to drive the turntable (1) to rotate, so that the mold part unloaded from the unloading area moves to the spraying area, the rotating motor (3) stops operating, and the mold release agent is sprayed on it through the spraying device (35); S5, the rotating motor (3) continues to drive the turntable (1) to rotate, so that the mold parts sprayed in the spraying area move to the injection molding area, the rotating motor (3) stops operating, and the material is injected into the lower mold (8) through the injection molding device (34); S6, the rotating motor (3) continues to control the rotation of the turntable (1), so that the next mold component moves to the injection molding area, and during the rotation process, the driving motor (25) operates in the reverse direction, so that the first bevel gear (24) at its output end rotates in the reverse direction, driving the second gear component and the third gear component to operate, so that the first gear component and the second bevel gear (28) operate in sequence; S61, the first gear member operates, so that the adjustment plate (14) drives the slide rod (13) to reset, pulls the connecting rod (12), and closes the upper mold (9), and then the second bevel gear (28) operates, so that the mounting rod (29) rotates in the opposite direction, and drives the limit rod (32) to reset by rotating the universal joint (30), and the cross rod part is in contact with the upper surface of the upper mold (9), so as to limit the upper mold (9); S7, the rotary motor (3) controls the turntable (1) to rotate, so that the mold piece after injection molding is moved to the bubbling area, and the next empty mold piece after spraying is moved to the injection molding area, and the operation is repeated.

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