Polyurethane pouring device for screen preparation

Abstract

The utility model discloses a polyurethane pouring device for screen preparation, which belongs to the technical field of screen preparation and comprises a lower template, a closed cover plate is arranged above the lower template, and a telescopic demoulding mechanism is arranged in the lower template. The telescopic demolding mechanism comprises a combined bottom plate, a telescopic convex column, a lifting guide column, a buffer spring and a demolding lower pressing plate, the combined bottom plate is arranged below the lower mold plate, the telescopic convex column is fixed to the upper surface of the combined bottom plate, the lifting guide column is fixed to the lower surface of the combined bottom plate, and the lifting guide column is sleeved with the buffer spring; according to the utility model, through the arrangement of the telescopic demoulding mechanism, the telescopic convex column moves downwards along the telescopic through hole of the lower template, so that the demoulding operation can be carried out on the sieve hole part of the molded polyurethane sieve in a concentrated manner; and in the demolding process, the mesh part of the polyurethane screen is kept to be demolded in the vertical direction by the telescopic convex columns, so that the trouble that the polyurethane screen is displaced and damaged due to abnormal pulling can be reduced.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the screen preparation technical field, concretely relates to a screen preparation polyurethane pouring device. BACKGROUND

[0002] Polyurethane is the full name of polyurethane, is the main chain contains the repeat urethane group (NHCOO) macromolecular compound's collective title, it is by organic diisocyanate or polyisocyanate and dihydroxy or polyhydroxy compound polymeric, polyurethane screen appearance is beautiful, bright color, light weight, high mechanical strength, heat insulation, sound insulation, corrosion resistance, excellent weather resistance, no secondary decoration, color variety.

[0003] At present, polyurethane screen is poured by the mold of the convex column for making screen hole and the lower mold combination through the upper mold and the upper mold integral forming, due to the large number of screen holes of polyurethane screen, which is closely formed with the convex column part of the mold, so that the opening and closing of the upper mold and the lower mold is difficult to form polyurethane screen, and it is difficult to separate the polyurethane screen from the upper mold, and the abnormal pulling of the polyurethane screen when the upper mold is opened can easily damage it, and the side baffle around the lower mold plate is not convenient to separate, so that the four sides of the formed polyurethane screen and the side baffle are combined, which has the defects of small operation space and difficult demolding, and the four corner parts between the side baffles will form a cleaning dead angle, so that it is difficult to clean the material accumulated in the corner part. UTILITY MODEL CONTENTS

[0004] The utility model aims at providing a screen preparation polyurethane pouring device to solve the problems in the above background.

[0005] To achieve the above object, the utility model provides the following technical scheme: a screen preparation polyurethane pouring device, including the lower mold plate, the upper surface of the lower mold plate is provided with the closing cover plate, the inside of the lower mold plate is provided with the telescopic demolding mechanism, the telescopic demolding mechanism includes the combined bottom plate, the telescopic convex column, the lifting guide column, the buffer spring and the demolding lower pressing plate, the combined bottom plate is arranged below the lower mold plate, the telescopic convex column is fixed on the upper surface of the combined bottom plate, the lifting guide column is fixed on the lower surface of the combined bottom plate, the buffer spring is sleeved on the outside of the lifting guide column, the demolding lower pressing plate is arranged directly above the telescopic convex column, the four side faces of the lower mold plate are provided with the turnover demolding mechanism, the turnover demolding mechanism includes the side baffle, the hinged block, the torsion spring and the receiving inclined block, the side baffle is arranged on the four side faces of the lower mold plate, the hinged block is fixed on the middle part of the lower end surface of the side baffle, the torsion spring is sleeved on the pivot of the hinged block, and the receiving inclined block is fixed on one side surface of the side baffle.

[0006] It should be noted in the scheme that the upper surface of the lower mold plate is provided with the telescopic aperture, and the telescopic convex column is slidably connected at the telescopic aperture of the lower mold plate.

[0007] Further worth mentioning is that the outer part of the lower mold plate is fixed with a fixing support, the inner wall of the fixing support is fixed with a fixing support plate, the upper surface of the fixing support plate is provided with a lifting guide groove, and the lifting guide column is slidingly connected at the lifting guide groove of the fixing support plate.

[0008] Further need to be explained is that one end of the buffer spring is fixed at the lower surface of the combined bottom plate, the other end of the buffer spring is fixed at the upper surface of the fixing support plate, and the lower end of the lifting guide column extends below the fixing support plate.

[0009] As a preferred embodiment, the lower mold plate, the side baffle and the closing cover plate are provided with a forming chamber, and the surface of the closing cover plate is provided with a sliding port slidingly matched with the telescopic convex column.

[0010] As a preferred embodiment, the side wall, where the accommodation port of the fixing support is located, is provided with a rotating groove, and the hinge block is rotatably connected at the rotating groove of the fixing support.

[0011] As a preferred embodiment, the torsion spring is also arranged in the rotating groove of the fixing support, one end of the torsion spring is fixed on the end surface of the hinge block, and the other end of the torsion spring is fixed on the inner end wall of the rotating groove.

[0012] As a preferred embodiment, one side of the fixing support is fixed with a lifting support arm, the upper part of the lifting support arm is fixed with a hydraulic cylinder, the output end of the hydraulic cylinder is fixed at the center of the upper end surface of the demolding lower pressing plate, one side surface of the demolding lower pressing plate is fixed with a positioning resisting frame, and the positioning resisting frame is tightly resisted on the inclined surface of the resisted inclined block.

[0013] Compared with the prior art, the polyurethane pouring device for screen preparation provided by the utility model has at least the following beneficial effects:

[0014] Through the telescopic demolding mechanism, the telescopic convex column can concentrate on the demolding operation of the screen hole part of the formed polyurethane screen when descending along the telescopic through hole of the lower mold plate, and the screen hole part of the polyurethane screen can be kept vertical during the demolding process, thereby reducing the trouble of displacement and abnormal pulling damage of the polyurethane screen.

[0015] Through the turnover demolding mechanism, the side baffle can be turned over along the fixing support and demolded with the side surface of the formed polyurethane screen after being extruded during the pressing process of the demolding lower pressing plate, and the adjacent side baffles can be conveniently opened and automatically reset under the elastic force of the torsion spring, so that the dead angle of the forming chamber can be conveniently cleaned. BRIEF DESCRIPTION OF DRAWINGS

[0016] In order to more clearly illustrate the technical scheme of the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiment description, obviously, the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained from these drawings without creative labor.

[0017] Figure 1 It is a whole structure perspective view of the polyurethane pouring device for screen preparation of the present application;

[0018] Figure 2 It is a closed cover plate structure perspective view of the polyurethane pouring device for screen preparation of the present application;

[0019] Figure 3 It is a telescopic convex column structure perspective view of the polyurethane pouring device for screen preparation of the present application;

[0020] Figure 4 It is a telescopic convex column structure perspective view of the polyurethane pouring device for screen preparation of the present application; Figure 2 It is an enlarged view of A in the above figure.

[0021] In the figure: 1, lower die plate; 2, telescopic through hole; 3, side baffle; 4, fixed support; 5, fixed support plate; 6, combined bottom plate; 7, telescopic convex column; 8, lifting guide column; 9, buffer spring; 10, lifting guide groove; 11, closed cover plate; 12, receiving inclined block; 13, demolding lower pressing plate; 14, positioning support frame; 15, lifting support arm; 16, hydraulic cylinder; 17, hinged block; 18, torsion spring; 19, rotating groove. DETAILED DESCRIPTION

[0022] The present application will be further described in combination with the embodiments.

[0023] Please refer to Figures 1-4 The present application provides a polyurethane pouring device for screen preparation, which comprises a lower die plate 1, a closed cover plate 11 arranged above the lower die plate 1, a telescopic demolding mechanism arranged in the lower die plate 1, the telescopic demolding mechanism comprising a combined bottom plate 6, a telescopic convex column 7, a lifting guide column 8, a buffer spring 9 and a demolding lower pressing plate 13, the combined bottom plate 6 being arranged below the lower die plate 1, the telescopic convex column 7 being fixed on the upper surface of the combined bottom plate 6, the lifting guide column 8 being fixed on the lower surface of the combined bottom plate 6, the buffer spring 9 being sleeved on the outside of the lifting guide column 8, the demolding lower pressing plate 13 being arranged directly above the telescopic convex column 7, four side surfaces of the lower die plate 1 being provided with a turnover demolding mechanism, the turnover demolding mechanism comprising a side baffle 3, a hinged block 17, a torsion spring 18 and a receiving inclined block 12, the side baffle 3 being arranged on the four side surfaces of the lower die plate 1, the hinged block 17 being fixed on the middle part of the lower end surface of the side baffle 3, the torsion spring 18 being sleeved on the rotating shaft of the hinged block 17, and the receiving inclined block 12 being fixed on one side surface of the side baffle 3.

[0024] Further as Figure 1 , Figure 2 and Figure 3 illustrated, it is worth noting that the upper surface of the lower mold plate 1 is provided with a telescopic opening 2, and the telescopic protruding column 7 is slidingly connected at the telescopic opening 2 of the lower mold plate 1.

[0025] Further as Figure 3 illustrated, it is worth noting that the outside of the lower mold plate 1 is fixedly provided with a fixed support 4, the inner walls of the fixed support 4 are fixedly provided with a fixed supporting plate 5, the upper surface of the fixed supporting plate 5 is provided with a lifting guide groove 10, and the lifting guide column 8 is slidingly connected at the lifting guide groove 10 of the fixed supporting plate 5.

[0026] The scheme has the following working process: before use, the closing cover plate 11 is provided on the four side baffles 3, and at the same time the closing cover plate 11 is suspended above the lower mold plate 1, so that the closing cover plate 11, the lower mold plate 1 and the four side baffles 3 form a forming chamber, and the telescopic protruding column 7 penetrates the closing cover plate 11 and the lower mold plate 1 and occupies the screen holes of the polyurethane screen, in use, the polyurethane material is filled into the forming chamber from the preset injection port on the closing cover plate 11, after cooling and forming, the hydraulic cylinder 16 is opened, the hydraulic cylinder 16 is lowered and the upper end of the telescopic protruding column 7 is extruded, the telescopic protruding column 7 is extruded and drives the lifting guide column 8 to slide downward along the lifting guide groove 10 of the fixed supporting plate 5 and extrude the buffer spring 9, the telescopic protruding column 7 moves downward along the telescopic opening 2 of the lower mold plate 1, which can concentrate on the demolding operation of the screen hole part of the formed polyurethane screen, and the screen hole part of the polyurethane screen is kept vertical during the demolding process. Demolding can reduce the trouble of polyurethane screen displacement and abnormal pulling damage.

[0027] Further as Figure 1 , Figure 2 and Figure 4 illustrated, it is worth noting that one end of the buffer spring 9 is fixed at the lower surface of the combined bottom plate 6, the other end of the buffer spring 9 is fixed at the upper surface of the fixed supporting plate 5, and the lower end of the lifting guide column 8 extends below the fixed supporting plate 5.

[0028] Further as Figure 4 illustrated, it is worth noting that the lower mold plate 1, the side baffle 3 and the closing cover plate 11 are provided with a forming chamber, and the surface of the closing cover plate 11 is provided with a sliding opening matched with the telescopic protruding column 7.

[0029] Further as Figure 1As shown, it is worth noting that the side wall of the fixed support 4 is provided with a rotating groove 19, and the hinge block 17 is rotatably connected to the rotating groove 19 of the fixed support 4. During the pressing process of the demolding lower pressing plate 13, the positioning resistance frame 14 is pressed against the inclined surface of the resistance inclined block 12, and the resistance inclined block 12 is pressed and transmitted to the side baffle 3. The side baffle 3 is self-adapted and hinged to the fixed support 4 through the hinge block 17 and the torsion spring 18. Thus, after the side baffle 3 is pressed, it is turned over along the fixed support 4 and demolds the side of the formed polyurethane screen. The adjacent side baffle 3 can be turned open and automatically reset under the elastic force of the torsion spring 18, thereby facilitating the cleaning operation of the dead angle of the forming chamber.

[0030] Further as shown in Figure 1 It is worth noting that the torsion spring 18 is also arranged in the rotating groove 19 of the fixed support 4. One end of the torsion spring 18 is fixed to the end face of the hinge block 17, and the other end of the torsion spring 18 is fixed to the inner end wall of the rotating groove 19.

[0031] Further as shown in Figure 1 It is worth noting that the fixed support 4 is fixed on one side of the fixed support 4. The upper part of the lifting arm 15 is fixed with a hydraulic cylinder 16. The output end of the hydraulic cylinder 16 is fixed at the center of the upper end face of the demolding lower pressing plate 13. The side surface of the demolding lower pressing plate 13 is fixed with a positioning resistance frame 14, which is tightly fitted on the inclined surface of the resistance inclined block 12.

[0032] In summary, the telescopic protruding column 7 can concentrate on the demolding operation of the screen hole part of the formed polyurethane screen along the telescopic through hole 2 of the lower mold plate 1. During the demolding process of the screen hole part of the polyurethane screen, the telescopic protruding column 7 keeps the vertical direction demolding, which can reduce the trouble of displacement and abnormal pulling damage of the polyurethane screen. During the pressing process of the demolding lower pressing plate 13, the side baffle 3 is pressed and turned over along the fixed support 4 and demolds the side of the formed polyurethane screen. The adjacent side baffle 3 can be turned open and automatically reset under the elastic force of the torsion spring 18, thereby facilitating the cleaning operation of the dead angle of the forming chamber.

[0033] The above is only a preferred specific embodiment of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art can make equivalent replacement or change according to the technical scheme and the inventive concept of the present application within the technical range disclosed by the present application, which should be covered within the protection scope of the present application.

Claims

1. A polyurethane casting device for preparing a screen, comprising a lower template (1), characterized in that: A closing cover plate (11) is provided above the lower template (1), and a telescopic demoulding mechanism is provided inside the lower template (1), the telescopic demoulding mechanism comprising a combined bottom plate (6), a telescopic boss (7), a lifting guide column (8), a buffer spring (9) and a demoulding lower pressing plate (13), the combined bottom plate (6) is provided below the lower template (1), the telescopic boss (7) is fixed to the upper surface of the combined bottom plate (6), the lifting guide column (8) is fixed to the lower surface of the combined bottom plate (6), the buffer spring (9) is sleeved on the outside of the lifting guide column (8), and the lower pressing plate (13) is provided. The demoulding lower pressure plate (13) is arranged just above the telescopic boss (7), and the four sides of the lower template (1) are all provided with a flip demoulding mechanism, and the flip demoulding mechanism includes a side baffle (3), a hinge block (17), a torsion spring (18) and an abutted oblique block (12). The side baffle (3) is arranged on the four sides of the lower template (1), the hinge block (17) is fixed to the middle of the lower end surface of the side baffle (3), the torsion spring (18) is sleeved on the rotating shaft of the hinge block (17), and the abutted oblique block (12) is fixed to a side surface of the side baffle (3).

2. The polyurethane casting device for preparing a screen according to claim 1, characterized in that: A telescopic opening (2) is provided on the upper surface of the lower template (1), and the telescopic boss (7) is slidably connected to the telescopic opening (2) of the lower template (1).

3. The polyurethane casting device for preparing a screen according to claim 2, characterized in that: A fixed bracket (4) is fixed to the outside of the lower template (1), a fixed support plate (5) is fixed between the inner walls of the fixed bracket (4), a lifting guide groove (10) is provided on the upper surface of the fixed support plate (5), and the lifting guide column (8) is slidably connected to the lifting guide groove (10) of the fixed support plate (5).

4. The polyurethane casting device for preparing a screen according to claim 3, characterized in that: One end of the buffer spring (9) is fixed to the lower surface of the combined base plate (6), and the other end of the buffer spring (9) is fixed to the upper surface of the fixed support plate (5). The lower end of the lifting guide column (8) extends below the fixed support plate (5).

5. The polyurethane casting device for preparing a screen according to claim 4, characterized in that: A molding chamber is provided between the lower template (1), the side baffle (3) and the closing cover (11), and a sliding opening that is slidably matched with the telescopic boss (7) is provided on the surface of the closing cover (11).

6. The polyurethane casting device for preparing a screen according to claim 5, characterized in that: A rotation groove (19) is provided on the side wall of the fixed bracket (4) where the clearance opening is located, and the hinge block (17) is rotatably connected to the rotation groove (19) of the fixed bracket (4).

7. The polyurethane casting device for preparing a screen according to claim 6, characterized in that: The torsion spring (18) is also arranged in the rotation groove (19) of the fixed bracket (4), one end of the torsion spring (18) is fixed to the end face of the hinge block (17), and the other end of the torsion spring (18) is fixed to the inner end wall of the rotation groove (19).

8. The polyurethane casting device for preparing a screen according to claim 7, characterized in that: A lifting arm (15) is fixed to one side of the fixed bracket (4), a hydraulic cylinder (16) is fixed to the upper part of the lifting arm (15), an output end of the hydraulic cylinder (16) is fixed to the center of the upper end surface of the demoulding lower pressing plate (13), a positioning bracket (14) is fixed to the surface of one side of the demoulding lower pressing plate (13), and the positioning bracket (14) is pressed against the inclined surface of the resisting inclined block (12).

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