A mold for polyurethane casting

Abstract

This utility model discloses a polyurethane casting mold, including a base plate and a top plate fixed at the top by a column. A lower mold, located on the upper part of the base plate, consists of left and right templates and front and rear templates. The lower mold has a textured groove. An upper mold, driven by a cylinder, is located on the upper part of the lower mold and has a pouring port at its top. The upper end of the lower mold has an annular sealing groove, and the lower end of the upper mold has an annular sealing block fixedly attached. The annular sealing block is secured in the annular sealing groove by a buffer sealing structure. The two sides of template one are fixedly connected to template two by a template sealing structure. The base plate has a transverse driving mechanism for moving template one and template two. This utility model, through the design of a split mold and the buffer sealing structure, effectively reduces vibration during mold closing and facilitates the complete removal of textured products.

Description

Technical Field

[0001] This utility model relates to the field of mold device technology, and more specifically to a mold for polyurethane casting. Background Technology

[0002] Polyurethane casting molds are used to pour polyurethane into the mold, which then cools to form the product. Traditional synchronous belt molds used for polyurethane casting have some drawbacks. Vibration occurs when the upper and lower molds close, which can damage the mold.

[0003] The existing utility model patent with publication number CN211221695U discloses a synchronous belt mold for polyurethane casting. The upper mold pushes the lower mold downwards, which in turn pushes a movable rod downwards, which in turn pushes a movable block downwards. The downward movement of the movable block compresses a spring, which provides shock absorption and extends the mold's lifespan. This method is practical and performs better than traditional methods. However, this utility model has the following problem: some products have textured sidewalls. When textured sidewalls exist, the product is difficult to remove, and removal can easily damage the textured surface. Therefore, this utility model proposes a polyurethane casting mold. Utility Model Content

[0004] The purpose of this utility model is to provide a mold for polyurethane casting, which can effectively reduce vibration during mold closing and facilitate the complete removal of textured products by setting a split mold and a buffer sealing structure.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A polyurethane casting mold includes a base plate and a top plate fixed at the top by columns. A lower mold, located at the top of the base plate, consists of left and right templates and front and rear templates. The lower mold has textured grooves. An upper mold is driven by a cylinder and located at the top of the lower mold. The upper mold has a pouring port at its top. The upper end of the lower mold has an annular sealing groove. The lower end of the upper mold has an annular sealing block fixedly located. The annular sealing block is engaged in the annular sealing groove by a buffer sealing structure. The two sides of template one are fixedly connected to template two by a template sealing structure. The base plate has a transverse driving mechanism for moving template one and template two.

[0007] Furthermore, a cylinder device is fixedly provided at the upper end of the top plate, and the output end of the cylinder device passes through the top plate and is fixedly connected to the upper end of the upper mold.

[0008] Furthermore, the buffer sealing structure includes spring 1, spring 2, buffer plate, and buffer block. Several spring 1 are fixedly installed in the annular sealing groove. A buffer plate is fixedly installed at the upper end of spring 1. A sealing surface 1 is fixedly installed at the upper end of the buffer plate. An annular inner groove is provided at the lower end of the annular sealing block. Several spring 2 are fixedly installed in the annular inner groove. A buffer block is fixedly installed at the lower end of spring 2. A sealing surface 2 is fixedly installed at the lower end of the buffer block. The sealing surface 2 and the annular sealing block are engaged in the corresponding annular sealing groove and match the annular sealing groove.

[0009] Furthermore, the annular sealing groove is provided with a sliding groove on both sides, and a slider is fixedly provided on both sides of the buffer plate at the position corresponding to the sliding groove, and the slider is engaged in the corresponding sliding groove.

[0010] Furthermore, the inner annular groove is provided with two connected sliding grooves, and the buffer block is fixedly provided with two sliders on both sides of the end near the spring, and the sliders are engaged in the corresponding sliding grooves.

[0011] Furthermore, the template sealing structure includes embedded grooves on both sides of the template and sealing blocks fixed at the corresponding embedded groove positions of the template. A sealing block is fixedly provided in the embedded groove, and a sealing groove is provided on the side of the sealing block near the sealing block. The sealing block is engaged in the corresponding sealing groove and matches the sealing groove.

[0012] Furthermore, the sealing slot has several grooves that communicate with each other on both sides, and the sealing block has several protrusions fixedly provided at the positions corresponding to the grooves, with the protrusions being engaged in the corresponding grooves.

[0013] Furthermore, the transverse drive mechanism includes movable slots on the four sides of the base plate, movable blocks are fixedly provided at the lower ends of both template one and template two, the movable blocks are engaged in the corresponding movable slots, threaded columns are rotatably connected in the movable slots, the threaded columns pass through the corresponding movable blocks and are threadedly connected to the movable blocks, and motors are fixedly provided on the sides of the base plate at the positions corresponding to the threaded columns, the output end of the motor passes through the base plate and is fixedly connected to the corresponding threaded columns.

[0014] The beneficial effects of this utility model are as follows: This utility model achieves product demolding through the setting of a separable lower mold and a horizontal drive mechanism, effectively solving the problem that the texture of the product is easily damaged during demolding. The springs one and two in the buffer sealing structure work together to effectively absorb the vibration of mold closing, thereby extending the mold life. Attached Figure Description

[0015] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0016] Figure 1 This is a schematic diagram of the structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the structure of this utility model without the columns and top plate;

[0018] Figure 3 This utility model Figure 2 Enlarged structural diagram at point A in the middle;

[0019] Figure 4 This is a schematic diagram of the cross-sectional structure of the connection between the template 1, the upper mold, and the sealing block of this utility model;

[0020] Figure 5 This utility model Figure 4 Enlarged structural diagram at point B.

[0021] Reference numerals: 1. Base plate; 101. Column; 102. Top plate; 2. Motor; 201. Threaded column; 3. Buffer plate; 301. Slider 1; 302. Sealing surface 1; 4. Template 1; 401. Inset groove; 5. Annular sealing block; 501. Annular inner groove; 502. Slide groove 2; 6. Buffer block; 601. Sealing surface 2; 602. Slider 2; 7. Sealing block; 701. Protrusion; 8. Sealing block; 801. Sealing groove; 802. Groove; 9. Upper mold; 901. Sprue; 10. Cylinder device; 11. Textured groove; 12. Annular sealing groove; 13. Moving block; 14. Moving groove; 15. Template 2; 16. Spring 1; 17. Slide groove 1; 18. Spring 2. Detailed Implementation

[0022] like Figures 1 to 3 As shown in this specific embodiment, a polyurethane casting mold includes a base plate 1 and a top plate 102 fixed at the top by a column 101. The lower mold, located on the upper end of the base plate 1, consists of left and right templates 4 and front and rear templates 15. The lower mold has a textured groove 11. The upper mold 9 is driven by a cylinder device 10 and is located on the upper end of the lower mold. The top of the upper mold has a pouring port 901. Activating the cylinder device 10 at the upper end of the top plate 102 can drive the upper mold 9 to move downward to achieve a seal with the lower mold. Moving the upper mold 9 upward can separate it from the lower mold, facilitating subsequent demolding. After the upper mold 9 moves downward, polyurethane can be poured through the pouring port 901. The polyurethane fills the textured groove 11 in the mold. After cooling, the product is formed.

[0023] like Figures 3 to 5As shown, the lower mold has an annular sealing groove 12 at its upper end, and the upper mold 9 has an annular sealing block 5 fixedly installed at its lower end. The annular sealing block 5 is secured in the annular sealing groove 12 by a buffer sealing structure. The buffer sealing structure includes a first spring 16, a second spring 18, a buffer plate 3, and a buffer block 6. Several first springs 16 are fixedly installed in the annular sealing groove 12. A buffer plate 3 is fixedly installed on the upper end of the first spring 16. A sealing surface 302 is fixedly installed on the upper end of the buffer plate 3. The annular sealing block 5 has an annular inner groove 501 at its lower end. Several second springs 18 are fixedly installed in the annular inner groove 501. A sealing surface 302 is fixedly installed on the lower end of the second spring 18. The buffer block 6 has a sealing surface 601 fixed at its lower end. The sealing surface 601 and the annular sealing block 5 are engaged in the corresponding annular sealing groove 12 and match the annular sealing groove 12. The sealing surface 601 and the sealing surface 302 abut and press against each other, which can achieve effective sealing between the two. Its own elasticity can also play a buffering role. In addition, with the cooperation of spring 16 and spring 28, when the transverse sealing block 8 moves down into the annular sealing groove 12, the elastic force of spring 16 and spring 28 can effectively absorb the impact force, further play a buffering role, and effectively extend the service life of the mold.

[0024] The annular sealing groove 12 has a sliding groove 17 connected to both sides. The buffer plate 3 has a slider 301 fixed on both sides corresponding to the sliding groove 17. The slider 301 is locked in the corresponding sliding groove 17. The annular inner groove 501 has a sliding groove 502 connected to both ends. The buffer block 6 has a slider 602 fixed on both sides of the end near the spring 18. The slider 602 is locked in the corresponding sliding groove 502. The slider 301, sliding groove 17, slider 602 and sliding groove 502 can prevent the buffer plate 3 and the buffer block 6 from disengaging from the annular sealing groove 12 and the annular inner groove 501, and also limit the movement path deviation of the buffer plate 3 and the buffer block 6.

[0025] Template 1 4 is fixedly connected to Template 2 15 on both sides by a template sealing structure. The template sealing structure includes an embedded groove 401 on both sides of Template 1 4 and a sealing block 7 fixed at the corresponding position of the embedded groove 401 on Template 2 15. A sealing block 8 is fixedly provided in the embedded groove 401. A sealing groove 801 is provided on the side of the sealing block 8 near the sealing block 7. The sealing block 7 is engaged in the corresponding sealing groove 801 and matches the sealing groove 801. The sealing block 7 of the template sealing structure is engaged in the sealing groove 801 of the sealing block 8, which can enhance the sealing performance between Template 1 4 and Template 2 15 and prevent polyurethane leakage.

[0026] The sealing groove 801 has several grooves 802 that communicate with each other on both sides. The sealing block 7 has several protrusions 701 fixedly installed at the positions of the grooves 802. The protrusions 701 are engaged in the corresponding grooves 802, which can further enhance the sealing performance between the two and prevent polyurethane leakage.

[0027] like Figures 1 to 2 As shown, the base plate 1 is provided with a transverse drive mechanism for moving template 1 4 and template 2 15. The transverse drive mechanism includes moving grooves 14 on the four sides of the base plate 1. Moving blocks 13 are fixedly provided at the lower ends of template 1 4 and template 2 15. The moving blocks 13 are locked in the corresponding moving grooves 14. Threaded columns 201 are rotatably connected in the moving grooves 14. The threaded columns 201 pass through the corresponding moving blocks 13 and are threadedly connected to the moving blocks 13. Motors 2 are fixedly provided on the side of the base plate 1 at the positions corresponding to the threaded columns 201. The output end of the motor 2 passes through the base plate 1 and is fixedly connected to the corresponding threaded columns 201. Starting the motor 2 can drive the threaded columns 201 to rotate. The rotation of the threaded columns 201 can drive the moving blocks 13 to move in the moving grooves 14. When demolding, it is only necessary to first move the moving blocks 13 at the lower end of template 2 15 to drive template 2 15 away from template 1 4, and then move the moving blocks 13 at the lower end of template 1 4 to achieve the closest demolding.

[0028] Working principle: In use, the cylinder device 10 can be activated to push the upper mold 9 downward, the annular sealing block 5 can be accurately embedded into the annular sealing groove 12, the buffer block 6 contacts and squeezes the buffer plate 3, and the spring 16 and spring 2 18 play the role of compression and energy absorption. When the upper mold is in place, polyurethane raw material can be injected through the pouring port 901 to fill the inner groove and texture groove 11 of the mold, and cool to form a textured product; When demolding, the cylinder device 10 is activated to drive the upper mold 9 upward, the annular sealing block 5 can be disengaged from the annular sealing groove 12, and the motor 2 on the side of the template 2 15 is activated to drive the threaded column 201 to rotate, so that the moving block 13 moves outward along the moving groove 14, and the sealing block 7 of the template 2 15 can leave the sealing groove 801. The motor 2 on the side of the template 1 4 is activated to drive the template 2 15 outward, thus demolding is achieved, and demolding will not damage the texture of the product; The cylinder device 10, the motor 2, and the circuit and method of their electrical connection are all disclosed in the prior art, so this application will not elaborate further.

[0029] The above are merely preferred embodiments of this utility model. The protection scope of this utility model is not limited to the above embodiments. All technical solutions falling within the scope of this utility model's concept are within its protection scope. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of this utility model should also be considered within its protection scope.

Claims

1. A polyurethane casting mold, comprising a base plate (1) and a top plate (102) fixed at its upper end by a column (101), characterized in that, The lower mold located on the upper end of the base plate (1) consists of template 1 (4) on the left and right sides and template 2 (15) on the front and rear sides. The lower mold has a textured groove (11). The upper mold (9) is driven by a cylinder device (10) and located on the upper end of the lower mold. It has a pouring port (901) on its top. The upper end of the lower mold has an annular sealing groove (12). The lower end of the upper mold (9) is fixedly provided with an annular sealing block (5). The annular sealing block (5) is locked in the annular sealing groove (12) by a buffer sealing structure. The template 1 (4) and template 2 (15) are fixedly connected on both sides by a template sealing structure. The base plate (1) is provided with a transverse driving mechanism to drive the template 1 (4) and template 2 (15) to move.

2. The polyurethane casting mold according to claim 1, characterized in that, A cylinder device (10) is fixedly provided on the upper end of the top plate (102), and the output end of the cylinder device (10) passes through the top plate (102) and is fixedly connected to the upper end of the upper mold (9).

3. The polyurethane casting mold according to claim 1, characterized in that, The buffer sealing structure includes spring 1 (16), spring 2 (18), buffer plate (3) and buffer block (6). Several spring 1 (16) are fixedly installed in the annular sealing groove (12). Buffer plate (3) is fixedly installed at the upper end of spring 1 (16). Sealing surface 1 (302) is fixedly installed at the upper end of buffer plate (3). Annular inner groove (501) is provided at the lower end of annular sealing block (5). Several spring 2 (18) are fixedly installed in the annular inner groove (501). Buffer block (6) is fixedly installed at the lower end of spring 2 (18). Sealing surface 2 (601) is fixedly installed at the lower end of buffer block (6). Sealing surface 2 (601) and annular sealing block (5) are engaged in the corresponding annular sealing groove (12) and match the annular sealing groove (12).

4. A polyurethane casting mold according to claim 3, characterized in that, The annular sealing groove (12) is provided with a sliding groove (17) on both sides. The buffer plate (3) is fixedly provided with a slider (301) on both sides corresponding to the sliding groove (17). The slider (301) is locked in the corresponding sliding groove (17).

5. A polyurethane casting mold according to claim 3, characterized in that, The annular inner groove (501) is provided with two connected sliding grooves (502). The buffer block (6) is fixed with two sliders (602) on both sides of the end near the spring (18). The sliders (602) are locked in the corresponding sliding grooves (502).

6. A polyurethane casting mold according to claim 1, characterized in that, The template sealing structure includes an embedded groove (401) on both sides of the template one (4) and a sealing block (7) fixed in the template two (15) corresponding to the embedded groove (401). A sealing block (8) is fixed in the embedded groove (401). A sealing groove (801) is provided on the side of the sealing block (8) close to the sealing block (7). The sealing block (7) is engaged in the corresponding sealing groove (801) and matches the sealing groove (801).

7. A polyurethane casting mold according to claim 6, characterized in that, The sealing slot (801) has several grooves (802) that communicate with each other on both sides. The sealing block (7) has several protrusions (701) fixedly provided at the positions corresponding to the grooves (802). The protrusions (701) are engaged in the corresponding grooves (802).

8. A polyurethane casting mold according to claim 1, characterized in that, The transverse drive mechanism includes movable slots (14) on the four sides of the base plate (1). Movable blocks (13) are fixedly provided at the lower ends of the template one (4) and template two (15). The movable blocks (13) are locked in the corresponding movable slots (14). Threaded columns (201) are rotatably connected in the movable slots (14). The threaded columns (201) pass through the corresponding movable blocks (13) and are threadedly connected to the movable blocks (13). Motors (2) are fixedly provided on the side of the base plate (1) at the positions corresponding to the threaded columns (201). The output end of the motor (2) passes through the base plate (1) and is fixedly connected to the corresponding threaded columns (201).

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