Non-foaming polyurethane sole production line

Abstract

The utility model discloses a non-foaming polyurethane shoe sole production line, which relates to the technical field of polyurethane shoe sole production and comprises a bottom plate, a shifting mechanism for pouring, a vacuum exhaust mechanism and a mold closing, pressing, vulcanizing and forming mechanism, the shifting mechanism for pouring is mounted at the front end of the upper side of the bottom plate, and a polyurethane pouring mechanism is mounted on the shifting mechanism for pouring. The vacuum exhaust mechanism comprises a branch vacuum cover and a vacuum pump, a plurality of supports are transversely arranged on the upper side of the bottom plate at equal intervals, each support is provided with a square sealing groove, and each support is provided with a vacuum cover through a vacuum cover lifting assembly. According to the non-foaming polyurethane shoe sole production line, a scheme of vacuum pressure-increasing compression molding is adopted, most of internal bubbles are removed through vacuum when a polyurethane material is poured into a shoe sole molding cavity and the viscosity is low, and then residual bubbles of the polyurethane material are extruded out through high pressure in the polyurethane viscosity increasing process; the non-foaming polyurethane sole has few bubbles and is high in quality.

Description

Technical Field

[0001] The utility model relates to the technical field of polyurethane sole production, in particular to a non-foaming polyurethane sole production line. Background Technique

[0002] At present, multiple processes are involved in the production of non-foaming polyurethane soles, including mold heating, spraying mold release agent, pouring, compression molding and vulcanization, mold opening and material taking, etc. Some of the existing solutions are designed without vacuum high-pressure equipment, and some are designed without pressure or with low pressure. It is found during use that there are easy to be bubbles in the non-foaming polyurethane soles. When the vacuum tank series connection scheme is adopted in the prior art, there are still certain bubbles in the non-foaming polyurethane soles, and due to the slow heat transfer between the upper and lower molds, the curing of the non-foaming polyurethane soles is relatively slow. Content of the Utility Model

[0003] The technical problem to be solved by the utility model is to overcome the existing defects, provide a non-foaming polyurethane sole production line, adopt a vacuum plus pressure pressing and forming scheme, most of the internal bubbles are removed by vacuum when the polyurethane material is poured into the sole forming cavity with lower viscosity, and then the remaining bubbles of the polyurethane material are extruded out by high pressure during the rising process of the polyurethane viscosity. There are few bubbles in the non-foaming polyurethane sole, the sole quality is high, and an upper mold heater and a bottom mold heater are provided to heat the non-foaming polyurethane sole from the upper and lower sides at the same time, which is beneficial to accelerating the curing speed of the non-foaming polyurethane sole, and the problems in the background technique can be effectively solved.

[0004] To achieve the above object, the utility model provides the following technical scheme: a non-foaming polyurethane sole production line, including a bottom plate, a pouring displacement mechanism is installed at the front end on the upper side of the bottom plate, a polyurethane pouring mechanism is installed on the pouring displacement mechanism, and further includes:

[0005] A vacuum exhaust mechanism, including a support, a square sealing groove, a vacuum cover lifting assembly, a vacuum cover, an air extraction port, a one-way valve, an air extraction hose and a vacuum pump. A plurality of supports are horizontally and equidistantly arranged on the upper side of the bottom plate. Each support is respectively provided with a square sealing groove, and each support is respectively installed with a vacuum cover through the vacuum cover lifting assembly. The bottom edge of the vacuum cover corresponds to the square sealing groove up and down. An air extraction port is respectively arranged at the rear side of each vacuum cover. A one-way valve is respectively installed on each air extraction port, and the rear end of each air extraction port is respectively connected to the air inlet of the vacuum pump through the air extraction hose. The vacuum pump is installed on the support;

[0006] A mold closing, pressing and vulcanizing forming mechanism is installed inside the vacuum cover.

[0007] The vacuum hood lifting assembly drives the vacuum hood to rise. The displacement mechanism for pouring drives the polyurethane pouring mechanism to move horizontally to the front side of the support. Then, the displacement mechanism for pouring drives the polyurethane pouring mechanism to move backward. The polyurethane pouring mechanism pours the molten polyurethane raw material into the die closing, pressing, and vulcanizing forming mechanism. Then, the vacuum hood lifting assembly controls the vacuum hood to move downward until the bottom edge of the vacuum hood extends into the square sealing groove. The vacuum pump operates to evacuate the air in the vacuum hood through the air extraction hose and the air extraction port, making the inside of the vacuum hood in a vacuum state. The one-way valve only allows the air extraction port to discharge the air in the vacuum hood. The vacuum state in the vacuum hood promotes the bubbles to escape from the polyurethane raw material with lower viscosity.

[0008] Further, the vacuum exhaust mechanism further includes a pressure relief port and a pressure relief solenoid valve. A pressure relief port is respectively arranged at the rear side of each vacuum hood, and a pressure relief solenoid valve is respectively installed on each pressure relief port. When it is necessary to open the vacuum hood, control the pressure relief solenoid valve to open the pressure relief port, and the air can enter the vacuum hood through the pressure relief port to complete the pressure relief operation inside the vacuum hood, which is convenient for opening the vacuum hood.

[0009] Further, the die closing, pressing, and vulcanizing forming mechanism includes a fixed sleeve, a forming bottom die, a sole forming cavity, and a bottom die heater. A fixed sleeve is respectively fixedly connected to the upper side of each support. Each fixed sleeve is respectively located inside the corresponding square sealing groove. The inner side of each fixed sleeve is respectively fixedly connected with a forming bottom die by screws. Two sole forming cavities are respectively formed on each forming bottom die. A bottom die heater is respectively installed in the bottom groove of each forming bottom die. The fixed sleeve and the screws are used for detachably installing the forming bottom die. The sole forming cavity on the forming bottom die is in the shape of a sole, which is convenient for pouring and forming the sole with molten polyurethane. The bottom die heater is used for continuously heating the forming bottom die and the polyurethane in the sole forming cavity to promote the curing process of the polyurethane.

[0010] Further, the mold clamping and pressing vulcanization forming mechanism further includes an upper template, vertical guide rails, vertical sliders, pressing protrusions, upper mold heaters, and pressing hydraulic cylinders. The centers of the tops of each vacuum hood are respectively fixedly connected with pressing hydraulic cylinders. The telescopic ends of the bottoms of each pressing hydraulic cylinder respectively pass through the tops of the vacuum hoods and are fixedly connected with the upper template. Two vertical guide rails are respectively fixedly connected to the left and right sides inside each vacuum hood. Two vertical sliders are respectively arranged on the left and right sides of each upper template. The two vertical sliders are respectively slidably connected with the corresponding two vertical guide rails. Two pressing protrusions are respectively fixedly connected to the bottom of each upper template corresponding to the positions of the two shoe sole forming cavities. Upper mold heaters are respectively installed inside each pressing protrusion. When the pressing hydraulic cylinder extends, it drives the upper template to move downward, so that the pressing protrusions extend into the corresponding shoe sole forming cavities. The pressing protrusions apply pressure to the polyurethane in the shoe sole forming cavities, promoting the overflow of air bubbles in the polyurethane. Through high pressure, the remaining air bubbles in the polyurethane material are squeezed out during the rising process of the polyurethane viscosity. The upper mold heaters heat the pressing protrusions, heating the polyurethane material from the top of the polyurethane material, which is beneficial to accelerating the curing process of the polyurethane material. When the set time ends, the pressing hydraulic cylinder shortens, and the pressing protrusions are made to leave the shoe sole forming cavities by means of the upper template. Then the vacuum hood rises, and the artificial worker takes out the formed non-foaming polyurethane shoe sole from the shoe sole forming cavity. The cooperation of the vertical guide rails and the vertical sliders allows the upper template to move only up and down.

[0011] Further, the displacement mechanism for pouring includes a horizontal linear track, a linear motor, a mounting seat plate, a longitudinal groove, a longitudinal slider, a longitudinal moving hydraulic cylinder, and a longitudinal moving seat plate. The front end on the upper side of the bottom plate is fixedly connected with a horizontal linear track. A linear motor is cooperatively installed on the horizontal linear track. The top of the linear motor is provided with a mounting seat plate. A longitudinal groove is formed in the mounting seat plate. A longitudinal slider is slidably connected in the longitudinal groove. The top of the longitudinal slider is fixedly connected with a longitudinal moving seat plate. A longitudinal moving hydraulic cylinder is installed on the front side of the mounting seat plate. The telescopic end of the rear side of the longitudinal moving hydraulic cylinder extends into the longitudinal groove and is fixedly connected with the longitudinal slider. The linear motor is used to move horizontally along the horizontal linear track to align the polyurethane pouring mechanism with different mold clamping and pressing vulcanization forming mechanisms. When the longitudinal moving hydraulic cylinder extends, it can push the longitudinal slider to move backward along the longitudinal groove, so that the longitudinal moving seat plate drives the polyurethane pouring mechanism to move backward, enabling the polyurethane pouring mechanism to pour the melted polyurethane material into the shoe sole forming cavity.

[0012] Further, the polyurethane pouring mechanism includes a raw material pouring machine and a pouring pipe. The raw material pouring machine is installed on the upper side of the longitudinal moving seat plate, and two pouring pipes are connected to the rear side of the raw material pouring machine. The raw material pouring machine can heat and melt the polyurethane material and at the same time discharge the polyurethane material into the shoe sole forming cavity through the pouring pipe.

[0013] Further, it further includes a mold release agent spraying mechanism. The mold release agent spraying mechanism includes a bent plate, a through groove, a movable shaft, a swing pipe, a mold release agent nozzle, a nozzle swing assembly, a liquid pump, a mold release agent hose, and a mold release agent tank. A bent plate is fixedly connected to the middle of the rear side of the longitudinal movement seat plate. The bent plate is located between the two pouring pipes. A through groove is formed in the top of the bent plate. A swing pipe is inserted into the through groove. Two movable shafts are respectively fixedly connected to both sides of the swing pipe. The two movable shafts are respectively rotatably connected to both sides of the top of the bent plate. One of the movable shafts is connected to the nozzle swing assembly. The rear end of the swing pipe is fixedly connected to a mold release agent nozzle. The front end of the swing pipe is connected to the outlet of the liquid pump through a mold release agent hose. The rear side of the mounting seat plate is fixedly connected to a mold release agent tank. The bottom outlet of the mold release agent tank is connected to the inlet of the liquid pump, and the liquid pump is installed on the mold release agent tank. The liquid pump pumps out the mold release agent in the mold release agent tank, and then sends it into the swing pipe through the mold release agent hose. The mold release agent in the swing pipe is sprayed out through the mold release agent nozzle. The mold release agent is sprayed into the sole molding cavity. The nozzle swing assembly drives the movable shaft to rotate forward and backward, thereby driving the right end of the swing pipe and the mold release agent nozzle to swing up and down, so that the mold release agent is evenly sprayed on the inner wall of the sole molding cavity, avoiding spraying dead corners in the sole molding cavity.

[0014] Further, the nozzle swing assembly includes a gear, a rack, a U-shaped frame, a limiting vertical rod, and an electric telescopic rod. A gear is fixedly sleeved on one of the movable shafts. The U-shaped frame is fixedly connected to the bent plate. A limiting vertical rod is vertically slidably connected in the square hole at the top of the U-shaped frame. The bottom end of the limiting vertical rod is fixedly connected to the top of the electric telescopic rod. The bottom of the electric telescopic rod is fixedly installed at the inner bottom of the U-shaped frame. The top end of the limiting vertical rod is fixedly connected to the bottom end of the rack. The rack is meshed with the gear. The electric telescopic rod expands and contracts to drive the limiting vertical rod and the rack to move up and down. When the rack moves up and down, it can drive the gear and the movable shaft to rotate forward and backward at a certain angle, thereby driving the right end of the swing pipe and the mold release agent nozzle to swing up and down.

[0015] Compared with the prior art, the beneficial effects of this non-foaming polyurethane sole production line are:

[0016] 1. Adopting the scheme of vacuum plus pressure molding, most of the internal bubbles are removed by vacuum when the polyurethane material is poured into the sole molding cavity with low viscosity, and then the remaining bubbles in the polyurethane material are extruded out by high pressure during the process of increasing the viscosity of the polyurethane. There are few bubbles in the non-foaming polyurethane sole, and the sole quality is high.

[0017] 2. There are an upper mold heater and a bottom mold heater to heat the non-foaming polyurethane sole from the upper and lower sides simultaneously, which is beneficial to accelerating the curing speed of the non-foaming polyurethane sole. Description of the Drawings

[0018] Figure 1 It is a schematic structural diagram of the present utility model;

[0019] Figure 2 For the present utility model Figure 1 is a schematic view of a partially enlarged structure at position A in the present utility model;

[0020] Figure 3 is a schematic view of a first partial structure of the present utility model;

[0021] Figure 4 is a schematic cross-sectional structure view of the first part of the present utility model;

[0022] Figure 5 is a schematic view of a second partial structure of the present utility model;

[0023] Figure 6 For the present utility model Figure 5 is a schematic view of a partially enlarged structure at position B in the present utility model;

[0024] In the figure: 1 bottom plate, 2 vacuum exhaust mechanism, 21 support, 22 square sealing groove, 23 column, 24 vacuum cover, 25 sliding sleeve, 26 mounting bracket, 27 lead screw, 28 lifting motor, 29 lead screw nut, 210 pressure relief port, 211 pressure relief solenoid valve, 212 air extraction port, 213 check valve, 214 air extraction hose, 215 vacuum pump, 3 mold closing and pressing vulcanization forming mechanism, 31 fixed sleeve, 32 forming bottom mold, 33 sole forming cavity, 34 bottom mold heater, 35 upper template, 36 vertical guide rail, 37 vertical slider, 38 pressing protrusion, 39 upper mold heater, 310 pressing hydraulic cylinder, 4 pouring displacement mechanism, 41 horizontal linear track, 42 linear motor, 43 mounting seat plate, 44 longitudinal groove, 45 longitudinal slider, 46 longitudinal displacement hydraulic cylinder, 47 longitudinal displacement seat plate, 5 polyurethane pouring mechanism, 51 raw material pouring machine, 52 pouring pipe, 6 mold release agent spraying mechanism, 61 bent plate, 62 through groove, 63 movable shaft, 64 swing pipe, 65 mold release agent spray head, 66 gear, 67 rack, 68 U-shaped frame, 69 limiting vertical rod, 610 electric telescopic rod, 611 liquid pump, 612 mold release agent hose, 613 mold release agent tank. Specific embodiments

[0025] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the scope of protection of the present utility model.

[0026] Example 1, please refer to Figures 1 to 6, The utility model provides a technical solution: a non-foaming polyurethane sole production line, including a bottom plate 1. A pouring displacement mechanism 4 is installed at the front end on the upper side of the bottom plate 1. A polyurethane pouring mechanism 5 is installed on the pouring displacement mechanism 4. It also includes a vacuum exhaust mechanism 2 and a mold closing, pressing and vulcanizing forming mechanism 3;

[0027] The vacuum exhaust mechanism 2 includes a support 21, a square sealing groove 22, a vacuum hood lifting assembly, a vacuum hood 24, an air extraction port 212, a one-way valve 213, an air extraction hose 214 and a vacuum pump 215. A plurality of supports 21 are arranged horizontally and equidistantly on the upper side of the bottom plate 1. A square sealing groove 22 is respectively opened on each support 21. And a vacuum hood 24 is respectively installed on each support 21 through the vacuum hood lifting assembly. The bottom edge of the vacuum hood 24 is arranged corresponding to the square sealing groove 22 up and down. An air extraction port 212 is respectively arranged at the rear side of each vacuum hood 24. A one-way valve 213 is respectively installed on each air extraction port 212. And the rear end of each air extraction port 212 is respectively connected to the air inlet of the vacuum pump 215 through the air extraction hose 214. The vacuum pump 215 is installed on the support 21;

[0028] Each vacuum hood 24 is separately configured with a vacuum pump, and the large vacuum tank series connection scheme is not adopted, which improves the vacuum degree in the vacuum hood 24.

[0029] The vacuum hood lifting assembly includes a column 23, a sliding sleeve 25, a mounting frame 26, a lead screw 27, a lifting motor 28, and a lead screw nut 29. Two columns 23 are respectively fixedly connected to the left and right ends on the upper side of each support 21. Two sliding sleeves 25 are respectively arranged on the left and right sides of each vacuum hood 24. The two sliding sleeves 25 are respectively connected to the two columns 23 in a vertical sliding manner. A lead screw nut 29 is respectively fixedly connected to the rear side of each vacuum hood 24. An mounting frame 26 is respectively fixedly connected to each support 21. A vertical lead screw 27 is rotatably connected between the top of the mounting frame 26 and the support 21 through a bearing. The lead screw 27 is in mating connection with the lead screw nut 29. The top end of the lead screw 27 is fixedly connected to the lifting motor 28. The lifting motor 28 is installed on the top of the mounting frame 26. When the lifting motor 28 works to drive the lead screw 27 to rotate clockwise, due to the mating connection between the lead screw 27 and the lead screw nut 29, the vacuum hood 24 is driven to rise along the column 23 through the sliding sleeve 25. When the lifting motor 28 works to drive the lead screw 27 to rotate counterclockwise, the vacuum hood 24 is driven to descend along the column 23 through the sliding sleeve 25.

[0030] The vacuum exhaust mechanism 2 also includes a pressure relief port 210 and a pressure relief solenoid valve 211. A pressure relief port 210 is respectively arranged at the rear side of each vacuum hood 24. A pressure relief solenoid valve 211 is respectively installed on each pressure relief port 210. When it is necessary to open the vacuum hood 24, the pressure relief solenoid valve 211 is controlled to open the pressure relief port 210. Through the pressure relief port 210, air can enter the vacuum hood 24 to complete the pressure relief operation in the vacuum hood 24, which is convenient to open the vacuum hood 24.

[0031] The mold clamping and compression vulcanization forming mechanism 3 is installed inside the vacuum hood 24.

[0032] The mold clamping and compression vulcanization forming mechanism 3 includes a fixed sleeve 31, a forming bottom mold 32, a sole forming cavity 33 and a bottom mold heater 34. A fixed sleeve 31 is fixedly connected to the upper side of each support 21. Each fixed sleeve 31 is located inside the corresponding square sealing groove 22. A forming bottom mold 32 is fixedly connected to the inside of each fixed sleeve 31 by screws. Two sole forming cavities 33 are formed in each forming bottom mold 32. A bottom mold heater 34 is installed in the bottom groove of each forming bottom mold 32. The fixed sleeve 31 and the screws are used for detachably installing the forming bottom mold 32. The sole forming cavity 33 in the forming bottom mold 32 is in the shape of a sole, which is convenient for casting and forming a sole with molten polyurethane. The bottom mold heater 34 is used to continuously heat the polyurethane in the forming bottom mold 32 and the sole forming cavity 33, promoting the curing process of the polyurethane.

[0033] The mold clamping and compression vulcanization forming mechanism 3 further includes an upper template 35, vertical guide rails 36, vertical sliders 37, pressing protrusions 38, an upper mold heater 39 and a pressing hydraulic cylinder 310. A pressing hydraulic cylinder 310 is fixedly connected to the center of the top of each vacuum hood 24. The telescopic end of the bottom of each pressing hydraulic cylinder 310 passes through the top of the vacuum hood 24 and is fixedly connected to an upper template 35. Two vertical guide rails 36 are fixedly connected to the left and right sides inside each vacuum hood 24. Two vertical sliders 37 are arranged on the left and right sides of each upper template 35 respectively. The two vertical sliders 37 are slidably connected to the corresponding two vertical guide rails 36 respectively. Two pressing protrusions 38 are fixedly connected to the bottom of each upper template 35 corresponding to the positions of the two sole forming cavities 33. An upper mold heater 39 is installed inside each pressing protrusion 38. When the pressing hydraulic cylinder 310 extends, it drives the upper template 35 to move downward, so that the pressing protrusions 38 extend into the corresponding sole forming cavities 33. The pressing protrusions 38 apply pressure to the polyurethane in the sole forming cavities 33, promoting the overflow of air bubbles in the polyurethane. The remaining air bubbles in the polyurethane material are squeezed out by high pressure during the rising process of the polyurethane viscosity. The upper mold heater 39 heats the pressing protrusions 38, heating the polyurethane material from the top of the polyurethane material. Heating from both the upper and lower sides is conducive to accelerating the curing process of the polyurethane material. When the set time ends, the pressing hydraulic cylinder 310 shortens, and the pressing protrusions 38 are lifted away from the sole forming cavities 33 by means of the upper template 35. Then the vacuum hood 24 rises, and the artificial worker takes out the formed non-foaming polyurethane sole from the sole forming cavity 33. The vertical guide rails 36 and the vertical sliders 37 cooperate to enable the upper template 35 to move only up and down.

[0034] The pressing pressure of the pressing protrusion 38 on the non-foaming polyurethane sole in the sole forming cavity 33 is 80 - 120 bar, while the existing solution is usually 0 - 25 bar. After multiple tests, it is found that there are no bubbles in the non-foaming polyurethane sole until the pressing pressure reaches 60 bar.

[0035] The displacement mechanism 4 for pouring includes a horizontal linear track 41, a linear motor 42, a mounting seat plate 43, a longitudinal groove 44, a longitudinal slider 45, a longitudinal displacement hydraulic cylinder 46, and a longitudinal displacement seat plate 47. The front end on the upper side of the bottom plate 1 is fixedly connected with the horizontal linear track 41. The linear motor 42 is fitted and installed on the horizontal linear track 41. The top of the linear motor 42 is provided with the mounting seat plate 43. The longitudinal groove 44 is opened on the mounting seat plate 43. The longitudinal slider 45 is slidably connected in the longitudinal groove 44. The top of the longitudinal slider 45 is fixedly connected with the longitudinal displacement seat plate 47. The longitudinal displacement hydraulic cylinder 46 is installed on the front side of the mounting seat plate 43. The telescopic end at the rear side of the longitudinal displacement hydraulic cylinder 46 extends into the longitudinal groove 44 and is fixedly connected with the longitudinal slider 45. The linear motor 42 is used to move horizontally along the horizontal linear track 41 to align the polyurethane pouring mechanism 5 with different mold closing and pressing vulcanization forming mechanisms 3. When the longitudinal displacement hydraulic cylinder 46 extends, it can push the longitudinal slider 45 to move backward along the longitudinal groove 44, so that the longitudinal displacement seat plate 47 drives the polyurethane pouring mechanism 5 to move backward, enabling the polyurethane pouring mechanism 5 to pour the molten polyurethane material into the sole forming cavity 33.

[0036] The polyurethane pouring mechanism 5 includes a raw material pouring machine 51 and a pouring pipe 52. The raw material pouring machine 51 is installed on the upper side of the longitudinal displacement seat plate 47, and two pouring pipes 52 are connected to the rear side of the raw material pouring machine 51. The raw material pouring machine 51 can heat and melt the polyurethane material and at the same time discharge the polyurethane material into the sole forming cavity 33 through the pouring pipe 52.

[0037] During use, the vacuum hood lifting assembly drives the vacuum hood 24 to rise. The displacement mechanism 4 for pouring drives the polyurethane pouring mechanism 5 to move horizontally to the front side of the support 21, and then the displacement mechanism 4 for pouring drives the polyurethane pouring mechanism 5 to move backward. The polyurethane pouring mechanism 5 pours the molten polyurethane raw material into the mold closing and pressing vulcanization forming mechanism 3. Then the vacuum hood lifting assembly controls the vacuum hood 24 to move downward until the bottom edge of the vacuum hood 24 extends into the square sealing groove 22. The vacuum pump 215 works to suck out the air in the vacuum hood 24 through the air extraction hose 214 and the air extraction port 212, making the inside of the vacuum hood 24 in a vacuum state. The one-way valve 213 only allows the air extraction port 212 to discharge the air in the vacuum hood 24. The vacuum state in the vacuum hood 24 promotes the bubbles to escape from the polyurethane raw material with lower viscosity.

[0038] Embodiment 2, please refer to Figures 1 to 6 , the present utility model provides a technical solution: a non-foaming polyurethane sole production line. This embodiment is substantially the same as Embodiment 1, and the difference lies in:

[0039] Before pouring the polyurethane material, it is necessary to spray a release agent into the sole forming cavity 33 to facilitate the demoulding of the non-foaming polyurethane sole. However, since the sole forming cavity 33 is recessed, it is not easy to spray the release agent in the sole forming cavity 33 comprehensively. Therefore, a release agent spraying mechanism 6 is provided. The release agent spraying mechanism 6 includes a bent plate 61, a through groove 62, a movable shaft 63, a swing pipe 64, a release agent spray head 65, a spray head swing assembly, a liquid pump 611, a release agent hose 612 and a release agent tank 613. The middle part of the rear side of the longitudinal movement seat plate 47 is fixedly connected with a bent plate 61. The bent plate 61 is located between the two pouring pipes 52. A through groove 62 is opened at the top of the bent plate 61. A swing pipe 64 is inserted into the through groove 62. Two movable shafts 63 are respectively fixedly connected to both sides of the swing pipe 64. The two movable shafts 63 are respectively rotatably connected to both sides of the top of the bent plate 61. One of the movable shafts 63 is connected to the spray head swing assembly. The spray head swing assembly is used to promote the comprehensive and uniform spraying of the release agent in the sole forming cavity 33. The rear end of the swing pipe 64 is fixedly connected with a release agent spray head 65. The front end of the swing pipe 64 is connected to the outlet of the liquid pump 611 through a release agent hose 612. The rear side of the mounting seat plate 43 is fixedly connected with a release agent tank 613. The bottom outlet of the release agent tank 613 is connected to the inlet of the liquid pump 611, and the liquid pump 611 is installed on the release agent tank 613.

[0040] The spray head swing assembly includes a gear 66, a rack 67, a U-shaped frame 68, a limiting vertical rod 69 and an electric telescopic rod 610. A gear 66 is fixedly sleeved on one of the movable shafts 63. A U-shaped frame 68 is fixedly connected to the bent plate 61. A limiting vertical rod 69 is vertically slidably connected in the top square hole of the U-shaped frame 68. The bottom end of the limiting vertical rod 69 is fixedly connected to the top of the electric telescopic rod 610. The bottom of the electric telescopic rod 610 is fixedly installed at the inner bottom of the U-shaped frame 68. The top end of the limiting vertical rod 69 is fixedly connected to the bottom end of the rack 67. The rack 67 is meshed with the gear 66. The telescopic movement of the electric telescopic rod 610 drives the limiting vertical rod 69 and the rack 67 to move up and down. When the rack 67 moves up and down, it can drive the gear 66 and the movable shaft 63 to rotate forward and backward at a certain angle, thereby driving the right end of the swing pipe 64 and the release agent spray head 65 to swing up and down.

[0041] The liquid pump 611 pumps out the release agent in the release agent tank 613, and then sends it into the swing pipe 64 through the release agent hose 612. The release agent in the swing pipe 64 is sprayed out through the release agent spray head 65. The release agent is sprayed into the sole forming cavity 33. The spray head swing assembly drives the movable shaft 63 to rotate forward and backward, thereby driving the right end of the swing pipe 64 and the release agent spray head 65 to swing up and down, so that the release agent is evenly sprayed on the inner wall of the sole forming cavity 33, avoiding spraying dead corners in the sole forming cavity 33.

[0042] It should be noted that the vacuum pump 215, lifting motor 28, pressure relief solenoid valve 211, bottom die heater 34, upper die heater 39, pressing hydraulic cylinder 310, linear motor 42, longitudinal movement hydraulic cylinder 46, and electric telescopic rod 610 disclosed in the above embodiments are all controlled by an external PLC controller, and the control method adopts the commonly used method in the prior art. Among them, the lifting motor 28 adopts a servo motor, and the pressing hydraulic cylinder 310 and the longitudinal movement hydraulic cylinder 46 are both connected to an external hydraulic source through hydraulic pipelines.

[0043] It should be noted that in this text, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device.

[0044] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. Non-foaming polyurethane sole production line, including a bottom plate (1), a pouring displacement mechanism (4) is installed at the front end of the upper side of the bottom plate (1), and a polyurethane pouring mechanism (5) is installed on the pouring displacement mechanism (4), characterized in that, It further includes: A vacuum exhaust mechanism (2), which includes a support (21), a square sealing groove (22), a vacuum cover lifting assembly, a vacuum cover (24), an air extraction port (212), a one-way valve (213), an air extraction hose (214), and a vacuum pump (215). A plurality of supports (21) are horizontally and equidistantly arranged on the upper side of the bottom plate (1). Each support (21) is provided with a square sealing groove (22), and a vacuum cover (24) is installed on each support (21) through a vacuum cover lifting assembly. The bottom edge of the vacuum cover (24) is arranged corresponding to the square sealing groove (22) up and down. An air extraction port (212) is arranged at the rear side of each vacuum cover (24). A one-way valve (213) is installed on each air extraction port (212), and the rear end of each air extraction port (212) is connected to the air inlet of the vacuum pump (215) through an air extraction hose (214). The vacuum pump (215) is installed on the support (21); A mold clamping and pressing vulcanization forming mechanism (3), which is installed inside the vacuum cover (24).

2. The non-foaming polyurethane sole production line according to claim 1, wherein: The vacuum exhaust mechanism (2) further includes a pressure relief port (210) and a pressure relief solenoid valve (211). A pressure relief port (210) is arranged at the rear side of each vacuum cover (24), and a pressure relief solenoid valve (211) is installed on each pressure relief port (210).

3. The non-foaming polyurethane sole production line according to claim 1, characterized in that: The mold clamping and pressing vulcanization forming mechanism (3) includes a fixed sleeve (31), a forming bottom mold (32), a sole forming cavity (33), and a bottom mold heater (34). A fixed sleeve (31) is fixedly connected to the upper side of each support (21). Each fixed sleeve (31) is located inside the corresponding square sealing groove (22). A forming bottom mold (32) is fixedly connected to the inside of each fixed sleeve (31). Two sole forming cavities (33) are opened on each forming bottom mold (32), and a bottom mold heater (34) is installed in the bottom groove of each forming bottom mold (32).

4. The non-foaming polyurethane sole production line according to claim 3, characterized in that: The mold clamping and pressing vulcanization forming mechanism (3) further includes an upper template (35), vertical guide rails (36), vertical sliders (37), pressing protrusions (38), an upper mold heater (39), and a pressing hydraulic cylinder (310). A pressing hydraulic cylinder (310) is fixedly connected to the center of the top of each vacuum cover (24). The telescopic end at the bottom of each pressing hydraulic cylinder (310) passes through the top of the vacuum cover (24) and is fixedly connected to an upper template (35). Two vertical guide rails (36) are fixedly connected to the left and right sides inside each vacuum cover (24). Two vertical sliders (37) are arranged on the left and right sides of each upper template (35). The two vertical sliders (37) are respectively slidably connected to the corresponding two vertical guide rails (36). Two pressing protrusions (38) are fixedly connected to the bottom of each upper template (35) corresponding to the positions of the two sole forming cavities (33). An upper mold heater (39) is installed inside each pressing protrusion (38).

5. The non-foaming polyurethane sole production line according to claim 1, characterized in that: The displacement mechanism (4) for pouring includes a horizontal linear track (41), a linear motor (42), a mounting seat plate (43), a longitudinal groove (44), a longitudinal slider (45), a longitudinal displacement hydraulic cylinder (46), and a longitudinal displacement seat plate (47). The front end on the upper side of the bottom plate (1) is fixedly connected with a horizontal linear track (41). A linear motor (42) is fitted and installed on the horizontal linear track (41). The top of the linear motor (42) is provided with a mounting seat plate (43). A longitudinal groove (44) is formed in the mounting seat plate (43). A longitudinal slider (45) is slidably connected in the longitudinal groove (44). The top of the longitudinal slider (45) is fixedly connected with a longitudinal displacement seat plate (47). A longitudinal displacement hydraulic cylinder (46) is installed on the front side of the mounting seat plate (43). The telescopic end at the rear side of the longitudinal displacement hydraulic cylinder (46) extends into the longitudinal groove (44) and is fixedly connected with the longitudinal slider (45).

6. The non-foaming polyurethane sole production line according to claim 5, characterized in that: The polyurethane pouring mechanism (5) includes a raw material pouring machine (51) and a pouring pipe (52). The raw material pouring machine (51) is installed on the upper side of the longitudinal displacement seat plate (47). Two pouring pipes (52) are connected to the rear side of the raw material pouring machine (51).

7. The non-foaming polyurethane sole production line according to claim 6, wherein: It further includes a demoulding agent spraying mechanism (6). The demoulding agent spraying mechanism (6) includes a bent plate (61), a through groove (62), a movable shaft (63), a swing pipe (64), a demoulding agent spray head (65), a spray head swing assembly, a liquid pump (611), a demoulding agent hose (612), and a demoulding agent tank (613). The middle part at the rear side of the longitudinal displacement seat plate (47) is fixedly connected with a bent plate (61). The bent plate (61) is located between the two pouring pipes (52). A through groove (62) is formed at the top of the bent plate (61). A swing pipe (64) is inserted in the through groove (62). Two movable shafts (63) are respectively fixedly connected to the two sides of the swing pipe (64). The two movable shafts (63) are respectively rotatably connected to the two sides at the top of the bent plate (61). One of the movable shafts (63) is connected to the spray head swing assembly. The rear end of the swing pipe (64) is fixedly connected with a demoulding agent spray head (65). The front end of the swing pipe (64) is connected to the outlet of the liquid pump (611) through a demoulding agent hose (612). The rear side of the mounting seat plate (43) is fixedly connected with a demoulding agent tank (613). The bottom outlet of the demoulding agent tank (613) is connected to the inlet of the liquid pump (611), and the liquid pump (611) is installed on the demoulding agent tank (613).

8. The non-foaming polyurethane sole production line according to claim 7, characterized in that: The spray head swing assembly includes a gear (66), a rack (67), a U-shaped frame (68), a limiting vertical rod (69), and an electric telescopic rod (610). A gear (66) is fixedly sleeved on one of the movable shafts (63). The bent plate (61) is fixedly connected with a U-shaped frame (68). A limiting vertical rod (69) is vertically slidably connected in the square hole at the top of the U-shaped frame (68). The bottom end of the limiting vertical rod (69) is fixedly connected with the top of the electric telescopic rod (610). The bottom of the electric telescopic rod (610) is fixedly installed at the inner bottom of the U-shaped frame (68). The top end of the limiting vertical rod (69) is fixedly connected with the bottom end of the rack (67). The rack (67) is meshed with the gear (66).

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