Polyisocyanurate block foam production mold

Abstract

The utility model discloses a polyisocyanurate block foam production mold which comprises a base, two side plates in mirror symmetry are fixedly connected to the top face of the base, two first arc-shaped plates in mirror symmetry are jointly and movably connected between the two side plates, a second arc-shaped plate is arranged above the two first arc-shaped plates, the second arc-shaped plate is movably connected between the two side plates, and the first arc-shaped plate and the second arc-shaped plate are in mirror symmetry. A supporting beam is fixed to the top faces of the two side plates together, a supporting frame is connected to the bottom face of the supporting beam in a lifting mode, an air cylinder is vertically fixed to the top face of the supporting beam, an output shaft of the air cylinder movably penetrates through the supporting beam and is vertically fixed to the top face of the supporting frame, and a pressing block is fixedly connected to the top wall of the supporting frame and located over the second arc-shaped plate. A guide piece is arranged in the supporting frame, and one end of each first arc-shaped plate and one end of each second arc-shaped plate are each fixedly provided with a fan-shaped plate. According to the utility model, the opening and closing of the mold can be completed only through one cylinder, so that the power consumption during the opening and closing of the mold is saved.

Description

Technical Field

[0001] This utility model relates to the field of foam production technology, and in particular to a mold for producing polyisocyanurate block foam. Background Technology

[0002] Patent publication number CN220362881U discloses a production mold for preparing fiber-reinforced polyisocyanurate foam, including a base, a rectangular frame, a limiter, and a second limiter. The base and the rectangular frame are connected by a connecting plate. A cylindrical mold is mounted on the rectangular frame. A demolding device and a second demolding device are mounted on the rectangular frame, both connected to the cylindrical mold. A third demolding device is mounted on the second demolding device and connected to the cylindrical mold. The limiter is mounted on one of the connecting plates, located at one end of the opening of the cylindrical mold. The second limiter is mounted on the other connecting plate, located at the other end of the opening of the cylindrical mold. This invention allows for adjustment of the mold cavity length, facilitating the production of fiber-reinforced polyisocyanurate foam of various lengths, greatly improving overall flexibility and convenience.

[0003] However, this patent requires the use of multiple electric push rods when opening the mold, which results in a large amount of electricity being consumed during the opening and closing of the mold. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing a polyisocyanurate block foam production mold.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a polyisocyanurate block foam production mold, comprising a base, two mirror-symmetrical side plates fixedly connected to the top surface of the base, two mirror-symmetrical arc-shaped plates 1 movably connected between the two side plates, an arc-shaped plate 2 above the two arc-shaped plates 1, the arc-shaped plate 2 movably connected between the two side plates, a support beam fixedly fixed to the top surface of the two side plates, a support frame vertically connected to the bottom surface of the support beam, a cylinder vertically fixed to the top surface of the support beam, the output shaft of the cylinder movably passing through the support beam and vertically fixed to the top surface of the support frame, a pressure block fixedly connected to the top wall of the support frame, the pressure block being located directly above the arc-shaped plate 2, a guide member provided inside the support frame, and a fan-shaped plate fixed to one end of each of the two arc-shaped plates 1 and one end of the arc-shaped plate 2.

[0006] As a further description of the above technical solution: a stepped groove 1 is opened on the top surface of each of the two arc-shaped plates 1, and a stepped groove 2 adapted to the stepped groove 1 is opened on each side of the arc-shaped plate 2. Multiple blind holes equidistantly distributed axially are opened vertically on the bottom surface of the stepped groove 2, and multiple equidistantly distributed axially fixed positioning pins are fixed vertically on the end face of each of the two stepped groove 1, and the positioning pins are adapted to the blind holes.

[0007] As a further description of the above technical solution: the guide includes U-shaped plates fixed on both sides of the inner wall of the support frame, each U-shaped plate is rotatably connected with multiple equally spaced guide rollers, and a trapezoidal block is fixed to the outside of each of the two arc-shaped plates.

[0008] As a further description of the above technical solution: both trapezoidal blocks are right-angled trapezoids, and the inclination directions of the inclined surfaces of the two trapezoidal blocks are symmetrical.

[0009] As a further description of the above technical solution: three sliding grooves are opened on the inner side of each of the two side plates, and the three sliding grooves are distributed in a T-shape on the inner side of the side plates. A slider is slidably connected in each sliding groove. A spring is fixed between the slider and the sliding groove. A slider is fixedly connected to each end of the second arc plate and each end of the two first arc plates.

[0010] As a further description of the above technical solution: a groove is formed on the inner side of the side plate away from the fan-shaped plate, a limiting plate is provided in the groove, and an electric push rod is horizontally fixed on the side of the side plate. The output shaft of the electric push rod moves through the groove and is fixedly connected to the limiting plate.

[0011] As a further description of the above technical solution: a slot is axially formed on the inner side of the lower end of one of the arc-shaped plates, and a clip adapted to the slot is fixedly connected to the inner side of the lower end of the other arc-shaped plate.

[0012] This utility model has the following beneficial effects:

[0013] Compared with existing technologies, this polyisocyanurate block foam production mold uses a cylinder to lift and connect a support frame to the bottom of the support beam. A guide is set in the support frame, and two arc-shaped plates and one arc-shaped plate are movably connected between the two side plates. This allows the mold to be opened and closed with only one cylinder, saving power consumption during mold opening and closing. The stepped groove one, stepped groove two, positioning pin blind hole, as well as the slot and locking strip are set to improve the tightness of the arc-shaped plates when they are joined, thereby improving the overall sealing of the mold. A baffle is telescopically connected to the inside of one of the side plates, which allows the mold to produce tubular foam of different lengths. Attached Figure Description

[0014] Figure 1 A three-dimensional view of the overall structure of the polyisocyanurate block foam production mold proposed in this utility model;

[0015] Figure 2 This is a front view of the overall structure of the polyisocyanurate block foam production mold proposed in this utility model;

[0016] Figure 3 This is a three-dimensional view of the arc-shaped plate of the polyisocyanurate block foam production mold proposed in this utility model.

[0017] Figure 4 The polyisocyanurate block foam production mold proposed in this utility model Figure 1 Enlarged view of the structure at point A in the middle;

[0018] Figure 5 This is a side sectional view of the overall structure of the polyisocyanurate block foam production mold proposed in this utility model;

[0019] Figure 6 The polyisocyanurate block foam production mold proposed in this utility model Figure 5 Enlarged view of the structure at point B;

[0020] Figure 7 This is a side sectional view of the connection between the side plate and the slider of the polyisocyanurate block foam production mold proposed in this utility model.

[0021] Legend:

[0022] 1. Base; 2. Side plate; 3. Arc-shaped plate one; 4. U-shaped plate; 5. Trapezoidal block; 6. Support frame; 7. Arc-shaped plate two; 8. Support beam; 9. Cylinder; 10. Electric push rod; 11. Guide roller; 12. Slider; 13. Fan-shaped plate; 14. Limiting plate; 15. Positioning pin; 16. Stepped groove one; 17. Stepped groove two; 18. Blind hole; 19. Slide groove; 20. Spring. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] Reference Figures 1 to 7The polyisocyanurate block foam production mold provided by this utility model includes a base 1, with two mirror-symmetrical side plates 2 fixedly connected to the top surface of the base 1. Two mirror-symmetrical arc-shaped plates 3 are movably connected between the two side plates 2. An arc-shaped plate 7 is provided above the two arc-shaped plates 3, movably connected between the two side plates 2. Three sliding grooves 19 are formed on the inner side of each of the two side plates 2, arranged in a T-shape. A slider 12 is slidably connected in each groove 19, and a spring 2 is fixed between the slider 12 and the groove 19. 0. A slider 12 is fixedly connected to each end of the two arc-shaped plates 7 and the two ends of the two arc-shaped plates 3. A support beam 8 is fixed to the top surface of the two side plates 2. A support frame 6 is lifted and connected to the bottom surface of the support beam 8. A cylinder 9 is vertically fixed to the top surface of the support beam 8. The output shaft of the cylinder 9 moves through the support beam 8 and is vertically fixed to the top surface of the support frame 6. A pressure block is fixedly connected to the top wall of the support frame 6. The pressure block is located directly above the arc-shaped plate 7. A guide is provided inside the support frame 6. A fan-shaped plate 13 is fixed to one end of each of the two arc-shaped plates 3 and one end of the arc-shaped plate 7.

[0025] The guide includes U-shaped plates 4 fixed on both sides of the inner wall of the support frame 6. Each U-shaped plate 4 is rotatably connected to multiple equally spaced guide rollers 11. A trapezoidal block 5 is fixed to the outside of each of the two arc-shaped plates 3. Both trapezoidal blocks 5 are right-angled trapezoids, and the inclination directions of the inclined surfaces of the two trapezoidal blocks 5 are symmetrical.

[0026] A groove is opened on the inner side of the side plate 2 away from the end of the fan-shaped plate 13. A limiting plate 14 is provided in the groove. An electric push rod 10 is horizontally fixed on the side of the side plate 2. The output shaft of the electric push rod 10 moves through the groove and is fixedly connected to the limiting plate 14.

[0027] Each of the two arc-shaped plates 1 3 has a stepped groove 16 on its top surface. Each of the two sides of the arc-shaped plate 2 7 has a stepped groove 2 17 that matches the stepped groove 16. The bottom surface of the stepped groove 2 17 has multiple equidistant axially distributed blind holes 18. The end faces of the two stepped grooves 16 each have multiple equidistant axially distributed positioning pins 15 that match the blind holes 18. One of the arc-shaped plates 1 3 has an axially distributed slot on its lower inner side. The lower inner side of the other arc-shaped plate 1 3 is fixedly connected to a locking strip that matches the slot.

[0028] A support frame 6 is connected to the bottom of the support beam 8 by using a cylinder 9 to lift and lower it. A guide is set inside the support frame 6, and two arc-shaped plates 3 and one arc-shaped plate 7 are movably connected between the two side plates 2. This allows the mold to be opened and closed by only one cylinder 9, saving the power consumption of the mold during opening and closing. The stepped groove 16, stepped groove 17, positioning pin 15, blind hole 18, as well as the slot and strip are set to improve the tightness of the arc-shaped plates when they are joined, thereby improving the overall sealing of the mold. A baffle is telescopically connected to the inside of one of the side plates 2, which allows the mold to produce tubular foam of different lengths.

[0029] Working principle: During use, the electric push rod 10 drives the limiting plate 14 to move towards the fan-shaped plate 13 according to the required length of tubular foam to be produced. This makes the distance between the inner side of the fan-shaped plate 13 and the limiting plate 14 equal to the required length of the tubular foam to be produced. Then, the cylinder 9 drives the support frame 6 to descend, and the support frame 6 drives the U-shaped plate 4 to descend, so that the guide roller 11 inside the U-shaped plate 4 contacts the inclined surface of the trapezoidal block 5 on the outer side of the two arc plates 3. The guide roller 11 drives the two arc plates 3 to make relative displacement, so that... The two arc-shaped plates 1 and 3 are joined together, and the two horizontal springs 20 corresponding to the two arc-shaped plates 1 and 3 are compressed. The locking strip is engaged in the locking groove, and then the cylinder 9 stops, feeding the raw material into the two joined arc-shaped plates 1 and 3. Then the cylinder 9 continues to descend, causing the support frame 6 to drive the pressure block to descend, so that the pressure block contacts the outside of the arc-shaped plate 2 and 7. At the same time, the guide roller 11 contacts the vertical surface of the trapezoidal block 5 and rolls on the vertical surface of the trapezoidal block 5. The pressure block drives the arc-shaped plate 2 and 7 to descend, so that the arc-shaped plate 2 and 7... The blind holes 18 on both sides of the arc plate 7 are fitted onto the outside of the positioning pins 15 on the top surface of the two arc plates 3. At the same time, the stepped groove 27 and the stepped groove 16 merge with each other, and the vertically set spring 20 is compressed, so that the arc plate 7 and the two merged arc plates 3 are combined to form a complete cylindrical shape, thus completing the mold closing. When the mold is opened after the raw material is formed, the cylinder 9 will drive the support frame 6 to rise, and the springs 20 on both sides of the arc plate 7, which are in a compressed state, will return to their original state, so that the arc plate 7 follows the support frame 6. The roller rises, causing the arc plate 27 to separate from the two merged arc plates 3 until the spring 20 is fully reset. At this time, the guide rod will contact the inclined surface of the trapezoidal block 5. When the guide roller 11 separates from the inclined surface of the trapezoidal block 5 on both sides of the arc plate 3, the spring 20 on both sides of the arc plate 3, which is in a compressed state, resets. When the spring 20 resets, it drives the two arc plates 3 to move in opposite directions, causing the two merged arc plates 3 to separate. Then the molded part inside the arc plate 3 will fall onto the base 1, thus completing the mold opening.

[0030] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A mold for producing polyisocyanurate block foam, comprising a base (1), wherein two mirror-symmetrical side plates (2) are fixedly connected to the top surface of the base (1), characterized in that: Two mirror-symmetrical arc-shaped plates (3) are movably connected between the two side plates (2). An arc-shaped plate (7) is provided above the two arc-shaped plates (3). The arc-shaped plate (7) is movably connected between the two side plates (2). A support beam (8) is fixed on the top surface of the two side plates (2). A support frame (6) is raised and lowered on the bottom surface of the support beam (8). A cylinder (9) is vertically fixed on the top surface of the support beam (8). The output shaft of the cylinder (9) movably passes through the support beam (8) and is vertically fixed on the top surface of the support frame (6). A pressure block is fixedly connected to the top wall of the support frame (6). The pressure block is located directly above the arc-shaped plate (7). A guide is provided inside the support frame (6). A fan-shaped plate (13) is fixed at one end of the two arc-shaped plates (3) and one end of the arc-shaped plate (7).

2. The polyisocyanurate block foam production mold according to claim 1, characterized in that: Each of the two arc-shaped plates (3) has a stepped groove (16) on its top surface. Each of the two arc-shaped plates (7) has a stepped groove (17) on each side that is adapted to the stepped groove (16). The bottom surface of the stepped groove (17) has multiple blind holes (18) that are equidistantly distributed axially. The end faces of the two stepped grooves (16) are each fixed with multiple equidistantly distributed axially fixed positioning pins (15). The positioning pins (15) are adapted to the blind holes (18).

3. The polyisocyanurate block foam production mold according to claim 1, characterized in that: The guide includes a U-shaped plate (4) fixed on both sides of the inner wall of the support frame (6), and a plurality of equally spaced guide rollers (11) are rotatably connected in each U-shaped plate (4). A trapezoidal block (5) is fixed to the outside of each of the two arc-shaped plates (3).

4. The polyisocyanurate block foam production mold according to claim 3, characterized in that: Both trapezoidal blocks (5) are right trapezoids, and the inclination directions of the inclined surfaces of the two trapezoidal blocks (5) are symmetrical.

5. The polyisocyanurate block foam production mold according to claim 1, characterized in that: Three grooves (19) are opened on the inner side of each of the two side plates (2). The three grooves (19) are distributed in a T-shape on the inner side of the side plate (2). A slider (12) is slidably connected in each groove (19). A spring (20) is fixed between the slider (12) and the groove (19). A slider (12) is fixedly connected to each end of the arc plate two (7) and each end of the two arc plates one (3).

6. The polyisocyanurate block foam production mold according to claim 1, characterized in that: A groove is provided on the inner side of the side plate (2) away from the end of the fan-shaped plate (13). A limiting plate (14) is provided in the groove. An electric push rod (10) is horizontally fixed on the side of the side plate (2). The output shaft of the electric push rod (10) moves through the groove and is fixedly connected to the limiting plate (14).

7. The polyisocyanurate block foam production mold according to claim 1, characterized in that: One of the arc-shaped plates (3) has an axially formed groove on the inner side of its lower end, and the other arc-shaped plate (3) has a clip that is adapted to the groove fixedly connected to the inner side of its lower end.

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