Accurate auxiliary guide mechanism for injection mold

Abstract

The utility model relates to the field of precise guide of injection molds, in particular to a precise auxiliary guide mechanism of an injection mold. The technical problems that the use cost is high, the fit clearance of molds at the two ends is too large, and finally an injection molding finished product has flaws are solved. According to the technical scheme, the device comprises a handle, outer shells and a partition plate, one side of one outer shell is connected with the partition plate in a sliding mode, the bottom of the partition plate is fixedly connected with the handle, the number of the outer shells is two, and the two outer shells can be attached to each other when moving. Through cooperation of a rack, a gear, a first bevel gear and a second bevel gear, a round cover can be driven to move downwards and rotate, meanwhile, the round cover is rotationally matched with a semicircular threaded column, the situation that the fit clearance between the two shells is too large is avoided, and the stability of the injection mold is improved; and the problem of flaws of finished products is avoided.

Description

Technical Field

[0001] This utility model relates to the field of precision guidance for injection molds, and in particular to a precision auxiliary guidance mechanism for injection molds. Background Technology

[0002] The clamping device of the injection molding machine pushes the injection mold to move until the injection mold is tightly closed, forming a closed cavity. The shape and size of this cavity are completely consistent with the plastic product to be produced.

[0003] In the existing mold closing process, it is necessary to ensure the closing accuracy and sealing of the mold. Current injection molding machines typically use mechanical devices at both ends to move the molds together, which is costly and results in excessive clearance between the molded parts, ultimately leading to defects in the finished injection molded product. Therefore, it is necessary to address the shortcomings of existing technologies. Utility Model Content

[0004] Existing injection molding machines typically use mechanical devices at both ends to move the molds at both ends closer together, which is costly and results in excessive clearance between the two molds, ultimately leading to defects in the injection molded products. The technical problem this invention aims to solve is to provide a precise auxiliary guiding mechanism for injection molds.

[0005] Technical Solution: A precision auxiliary guiding mechanism for injection molds includes a handle, a housing, and a partition. One housing has a partition slidably connected to one side, and a handle is fixedly attached to the bottom of the partition. Two housings are provided, which can fit together when moving. Each housing has a through groove on its opposite side. The mechanism also includes guide plates. Two guide plates are symmetrically fixed to the top of each housing. A round-headed column is slidably connected between each pair of guide plates. Two first rings are symmetrically fixed to the outer walls of each of the two round-headed columns. Two limiting grooves are symmetrically opened on the top of each housing, matching the number of first rings. The outer walls of the two first rings are located within the limiting grooves of the two housings and are slidably connected to them. Connecting blocks are rotatably attached to the outer walls of each of the two round-headed columns. A rectangular plate is fixedly attached to one end of each connecting block. A hinge shaft is rotatably connected inside each of the two rectangular plates. A top plate is fixedly attached to both ends of the two hinge shafts. A precision guiding mechanism for the injection mold is provided below the top plate.

[0006] In a preferred embodiment of the present invention, the precision guiding mechanism includes rectangular pull plates, and two rectangular pull plates are symmetrically fixed to the top of the two housings, with an elastic pull rod fixed between the opposite sides of each pair of rectangular pull plates.

[0007] In a preferred embodiment of this utility model, the precision guiding mechanism further includes a sliding plate. Rectangular slots are provided on the tops of both outer shells, and a sliding plate is slidably connected within these slots. An electric push rod is mounted on the top of the sliding plate, and a cylinder is rotatably connected to the telescopic end of the electric push rod. A circular cover is fixedly connected through the outer wall of the cylinder, and the inner wall of the circular cover is threaded. A second ring is fixedly connected to the top of the outer wall of the cylinder, and the outer wall of the second ring is rotatably connected to a top plate. A third ring is fixedly connected to the outer wall of the cylinder, and a connecting plate is rotatably connected to the outer wall of the third ring. A fixed plate is also fixedly connected to the top of the sliding plate. A fixed plate has a rack slidably connected to one side, and the rack is fixedly connected to a connecting plate on one side. A gear is rotatably connected to one side of the fixed plate via a rotating shaft, and the rack meshes with the gear on one side. A first bevel gear is fixedly connected to one side of the gear. Support rods are symmetrically fixed to the top of the slide plate. An annular groove is opened at the bottom of the hollow shaft, and the top of the support rod is slidably limited to the annular groove. A second bevel gear is fixedly connected to the outer wall of the hollow shaft, and one side of the second bevel gear meshes with the first bevel gear. Several connecting columns are fixedly connected to the top of the hollow shaft in an annular array, and the outer wall of the connecting columns is slidably connected to the cylinder through it.

[0008] In a preferred embodiment of the present invention, the precision guiding mechanism further includes a semi-circular threaded post. The top of both outer shells is fixedly connected with a semi-circular threaded post. The two semi-circular threaded posts can fit together when they move, and the threads on the outer walls of the two semi-circular threaded posts match each other and match the threads on the inner wall of the round cover.

[0009] In a preferred embodiment of this utility model, it further includes round shafts. Two round shafts are symmetrically fixed to the outer sides of the two outer shells. A scraper is slidably connected to one end of each pair of round shafts. Two rectangular slots are symmetrically opened on opposite sides of the two scrapers. The four round shafts are respectively located in the four rectangular slots of the two scrapers. The two scrapers are fixedly connected by a long plate, which is located on opposite sides of the two outer shells. When the long plate moves, it can match the through slots opened in the two outer shells. The two scrapers are respectively located on both sides of the two outer shells and fit against the sides of the two outer shells.

[0010] In a preferred embodiment of the present invention, an injection molding template is further included, wherein the injection molding template is provided inside one of the outer shells, and an injection port is provided on one side of the injection molding template, and the injection port extends to the outside of the other outer shell.

[0011] This invention utilizes the cooperation of a top plate, a hinge shaft, and a round-headed column to allow the round-headed column and the first circular ring to slide along the limiting grooves of the two outer shells under force. The round-headed column moves along the guide plates on both sides. When the round-headed column moves to the opening of the guide plate, the elastic pull rod drives the two guide plates and the two outer shells to move closer to each other until the two outer shells are in contact, thus preventing misalignment of the two outer shells. Through the cooperation of a rack, gear, first bevel gear, and second bevel gear, the round cover can be driven to move downward and rotate, while simultaneously matching the rotation of the semi-circular threaded column, thus preventing excessive clearance between the two outer shells, improving the stability of the injection mold, and avoiding defects in the finished product. Attached Figure Description

[0012] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0013] Figure 2 This is a schematic diagram of the injection port structure of this utility model;

[0014] Figure 3 This is a schematic diagram of the guide plate structure of this utility model;

[0015] Figure 4 This is a schematic diagram of the semi-circular threaded column structure of this utility model;

[0016] Figure 5 This is an exploded view of the circular cover and connecting plate structure of this utility model;

[0017] Figure 6 This is a schematic diagram of the scraper structure of this utility model;

[0018] Figure 7 This is a schematic diagram of the circular shaft structure of this utility model;

[0019] Figure 8 This is a cross-sectional view of the partition structure of this utility model.

[0020] Labels in the diagram: 1-Handle, 2-Outer shell, 3-Guide plate, 4-Rectangular pull plate, 5-Elastic pull rod, 6-Connecting block, 7-First ring, 8-Round head column, 9-Rectangular plate, 10-Top plate, 11-Hinge shaft, 12-Slide plate, 13-Semi-circular threaded column, 14-Round cover, 15-Injection port, 16-Connecting plate, 17-Second ring, 18-Third ring, 19-Rack, 20-Gear, 21-First bevel gear, 22-Second bevel gear, 23-Hollow shaft, 24-Electric push rod, 25-Support rod, 26-Connecting column, 27-Cylinder, 28-Round shaft, 29-Scraper, 30-Partition plate, 31-Fixing plate, 32-Injection mold template. Detailed Implementation

[0021] The above-described solution will be further illustrated below with reference to specific embodiments. It should be understood that these embodiments are for illustrative purposes only and are not intended to limit the scope of this application. The implementation conditions used in the embodiments may be further adjusted according to the conditions of specific manufacturers, and the implementation conditions not specified are generally those in routine experiments.

[0022] Example 1

[0023] A precision auxiliary guiding mechanism for injection molds, such as Figure 1-8As shown, the device includes a handle 1, a housing 2, and a partition 30. One side of the housing 2 is slidably connected to the partition 30, and the handle 1 is fixedly connected to the bottom of the partition 30. There are two housings 2, which can fit together when they move. Each of the two housings 2 has a through groove on its opposite side. The device also includes guide plates 3. Two guide plates 3 are symmetrically fixed to the top of each of the two housings 2. A round-headed column 8 is slidably connected between each pair of guide plates 3. Two first rings 7 are symmetrically fixed to the outer walls of the two round-headed columns 8. Two limiting grooves are symmetrically opened on the top of each of the two housings 2. The number of limiting grooves matches the number of first rings 7. The outer walls of the two first rings 7 are located in the limiting grooves of the two housings 2 and are slidably connected to the limiting grooves of the two housings 2. Connecting blocks 6 are rotatably attached to the outer walls of the two round-headed columns 8. A rectangular plate 9 is fixedly attached to one end of each connecting block 6. A hinge shaft 11 is rotatably connected inside each of the two rectangular plates 9. A top plate 10 is fixedly attached to both ends of the two hinge shafts 11. A precise guiding mechanism for the injection mold is provided below the top plate 10.

[0024] The precision guiding mechanism includes rectangular pull plates 4. Two rectangular pull plates 4 are symmetrically fixed to the top of the two outer shells 2. An elastic pull rod 5 is fixed between the opposite sides of each pair of rectangular pull plates 4.

[0025] The precision guiding mechanism also includes a slide plate 12. Rectangular slots are provided on the tops of both outer shells 2, and the slide plate 12 is slidably connected within these slots. An electric push rod 24 is mounted on the top of the slide plate 12. A cylinder 27 is rotatably connected to the telescopic end of the electric push rod 24. A circular cover 14 is fixedly connected through the outer wall of the cylinder 27, and the inner wall of the circular cover 14 is threaded. A second ring 17 is fixedly connected to the top of the outer wall of the cylinder 27, and its outer wall is rotatably connected to the top plate 10. A third ring 18 is fixedly connected to the outer wall of the cylinder 27, and a connecting plate 16 is rotatably connected to its outer wall. A fixing plate 31 is fixedly connected to the top of the slide plate 12, and one side of the fixing plate 31... A rack 19 is slidably connected, with one side of the rack 19 fixedly connected to the connecting plate 16. A gear 20 is rotatably connected to one side of the fixed plate 31 via a rotating shaft. One side of the rack 19 meshes with the gear 20. A first bevel gear 21 is fixedly connected to one side of the gear 20. Support rods 25 are symmetrically fixedly connected to the top of the slide plate 12. An annular groove is opened at the bottom of the hollow shaft 23, and the top of the support rod 25 is slidably limited to the annular groove. A second bevel gear 22 is fixedly connected to the outer wall of the hollow shaft 23. One side of the second bevel gear 22 meshes with the first bevel gear 21. Several connecting posts 26 are fixedly connected to the top of the hollow shaft 23 in an annular array. The outer wall of the connecting posts 26 is slidably connected to the cylinder 27 through it.

[0026] The precision guiding mechanism also includes a semi-circular threaded post 13. The top of both housings 2 are fixed with a semi-circular threaded post 13. The two semi-circular threaded posts 13 can fit together when they move, and the threads on the outer walls 13 of the two semi-circular threaded posts match each other and match the threads on the inner wall of the round cover 14.

[0027] It also includes round shafts 28. Two round shafts 28 are symmetrically fixed to the outer sides of the two outer shells 2. A scraper 29 is slidably connected to one end of each pair of round shafts 28. Two rectangular slots are symmetrically opened on opposite sides of the two scraper 29. The four round shafts 28 are respectively located in the four rectangular slots of the two scraper 29. The two scraper 29 are fixed to each other by a long plate, and the long plate is located on opposite sides of the two outer shells 2. When the long plate moves, it can match the through slots opened in the two outer shells 2. The two scraper 29 are respectively located on both sides of the two outer shells 2 and are in contact with the sides of the two outer shells 2.

[0028] It also includes an injection molding template 32, one of which is located inside the outer shell 2. The injection molding template 32 has an injection port 15 on one side and extends to the outside of the other outer shell 2.

[0029] Initially, the two outer shells 2 are far apart, and the two ends of the round-headed column 8 abut against the two guide plates 3 respectively. The two elastic rods 5 are under tension. When injection molding is required, the electric push rod 24 is manually activated first. The telescopic end of the electric push rod 24 drives the column 27, the round cover 14, the top plate 10, and the connecting plate 16 to move downward. When the column 27 moves, it slides on the surface of several connecting columns 26. When the top plate 10 moves downward, it drives the rectangular plate 9, the round-headed column 8, and the first ring 7 to slide along the limiting grooves of the two outer shells 2 through the hinge shaft 11. The limiting grooves can guide the round-headed column 8 to avoid deviation when it moves. At the same time, the connecting plate 16 moves downward, driving the rack 19 to move. The movement of the rack 19 drives the gear 20 to rotate through the rotating shaft. The rotation of pinion 20 drives the first bevel gear 21 to rotate synchronously, which in turn drives the second bevel gear 22 to rotate. The second bevel gear 22 then drives the hollow shaft 23 to rotate synchronously. The rotation of the hollow shaft 23, through several connecting posts 26, drives the cylinder 27 to rotate. The support rod 25, in cooperation with the annular groove on the hollow shaft 23, guides and supports the rotation of the hollow shaft 23. The rotation of the cylinder 27 drives the second ring 17 and the third ring 18 to rotate at the bottom of the top plate 10 and inside the connecting plate 16, respectively. At the same time, the cylinder 27 drives the round cover 14 to rotate. At this time, the round cover 14 is in a downward moving and rotating state. When the round head post 8 moves to the opening of the guide plate 3 within the limiting groove, the elastic pull rod 5 is no longer stretched and begins to reset. The elastic pull rod 5 drives... Two guide plates 3 approach each other with two outer shells 2. The rectangular grooves of the two outer shells 2 slide on the slide plate 12 until the two outer shells 2 are in contact with each other. At the same time, the movement and contact of the two outer shells 2 can drive the two semi-circular threaded columns 13 to approach and contact with each other. At this time, the bottom of the round cover 14 is in contact with the top of the two semi-circular threaded columns 13. By rotating the round cover 14 downward, the threads on the inner wall of the round cover 14 are engaged with the threads on the outer wall of the two contacting semi-circular threaded columns 13, thus limiting the movement of the two outer shells 2 and preventing the gap between the two outer shells 2 from being too large. At the same time, during the process of the two outer shells 2 approaching each other, the two round shafts 28 respectively squeeze the two rectangular long grooves on the scraper 29. The scraper 29 is forced to move upward, and the movement of the scraper 29 drives the long plate The components move synchronously until the long plate between the two scrapers 29 moves into the through slots opened in the two outer shells 2. The electric push rod 24 is then closed. Manual injection is then performed on the injection mold 32 through the injection port 15. The round cover 14 engages with the two fitted semi-circular threaded pillars 13, improving the stability of the injection mold and preventing defects in the finished product. After injection and cooling, the electric push rod 24 is manually activated. The telescopic end of the electric push rod 24 drives the cylinder 27, round cover 14, top plate 10, and connecting plate 16 upwards. Simultaneously, as the top plate 10 moves upwards, it drives the rectangular plate 9 and the round-headed pillar 8 upwards via the hinge shaft 11, causing the two first rings 7 to slide back along the limiting slots of the two outer shells 2. At the same time, the movement of the connecting plate 16 drives the rack 19 upwards.The movement of rack 19 causes gear 20 and the first bevel gear 21 to rotate in opposite directions. The rotation of the first bevel gear 21 causes the second bevel gear 22 to rotate in opposite directions. The rotation of the second bevel gear 22 causes several connecting posts 26 to rotate. The several connecting posts 26 cause the cylinder 27 to rotate. The cylinder 27 causes the second ring 17 and the third ring 18 to rotate at the bottom of the top plate 10 and inside the connecting plate 16, respectively. At the same time, the cylinder 27 causes the round cover 14 to rotate. At this time, the round cover 14 is in an upward moving and rotating state. The threads on the inner wall of the round cover 14 disengage from the threads on the outer walls of the two mating semi-circular threaded posts 13, releasing the two outer threads. When shell 2 is positioned, the round-headed column 8 abuts against the two guide plates 3, and the two elastic pull rods 5 are stretched by force, causing the two shells 2 to move away from each other. At this time, the long plate between the two scrapers 29 moves out of the through groove of the two shells 2. During the process of the two shells 2 moving away from each other, the two round shafts 28 squeeze the two rectangular long grooves on the scrapers 29. The two scrapers 29 and the long plate move downward synchronously under force. When the long plate moves downward, it can scrape off the molten material remaining on the injection mold 32 and at the injection port 15. After scraping is completed, the partition 30 is pulled out by manually pulling the handle 1 on the shell 2, and the injection molded product is taken out.

[0030] The embodiments described above are merely preferred embodiments of the present invention, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that those skilled in the art can make various modifications, improvements, and substitutions without departing from the inventive concept, and these all fall within the protection scope of the present invention. Therefore, the protection scope of this patent should be determined by the appended claims.

Claims

1. A precision auxiliary guiding mechanism for injection molds, comprising a handle (1), a housing (2), and a partition (30), wherein the partition (30) is slidably connected to one side of one housing (2), and the handle (1) is fixedly connected to the bottom of the partition (30). Two housings (2) are provided, which can fit together when moving. Through slots are provided on opposite sides of both housings (2). The mechanism is characterized in that: It also includes guide plates (3), two guide plates (3) are symmetrically fixed to the top of the two shells (2), and round-headed columns (8) are slidably connected between each pair of guide plates (3). Two first rings (7) are symmetrically fixed to the outer walls of the two round-headed columns (8). Two limiting grooves are symmetrically opened on the top of the two shells (2). The number of limiting grooves matches the number of first rings (7). The outer walls of the two first rings (7) are respectively located in the limiting grooves of the two shells (2) and are slidably connected to the limiting grooves of the two shells (2). Connecting blocks (6) are rotatably attached to the outer walls of the two round-headed columns (8). A rectangular plate (9) is fixed to one end of the two connecting blocks (6). A hinge shaft (11) is rotatably connected inside the two rectangular plates (9). A top plate (10) is fixed to both ends of the two hinge shafts (11). A precise guiding mechanism for the injection mold is provided below the top plate (10).

2. The precision auxiliary guiding mechanism for injection molds according to claim 1, characterized in that: The precision guiding mechanism includes rectangular pull plates (4), and two rectangular pull plates (4) are symmetrically fixed to the top of the two outer shells (2). An elastic pull rod (5) is fixed between the opposite sides of each pair of rectangular pull plates (4).

3. The precision auxiliary guiding mechanism for injection molds according to claim 2, characterized in that: The precision guiding mechanism also includes a slide plate (12). Rectangular slots are provided on the top of both outer shells (2). The slide plate (12) is slidably connected within the rectangular slots of both outer shells (2). An electric push rod (24) is installed on the top of the slide plate (12). A cylinder (27) is rotatably connected to the telescopic end of the electric push rod (24). A round cover (14) is fixedly connected through the outer wall of the cylinder (27). The inner wall of the round cover (14) is threaded. A second ring (17) is fixedly connected to the top of the outer wall of the cylinder (27). The outer wall of the second ring (17) is rotatably connected to the top plate (10). A third ring (18) is fixedly connected to the outer wall of the cylinder (27). A connecting plate (16) is rotatably connected to the outer wall of the third ring (18). A fixing plate (31) is fixedly connected to the top of the slide plate (12). The fixing plate (31)... A rack (19) is slidably connected to the side. One side of the rack (19) is fixed to the connecting plate (16). One side of the fixed plate (31) is rotatably connected to the gear (20) via a rotating shaft. One side of the rack (19) meshes with the gear (20). One side of the gear (20) is fixedly connected to the first bevel gear (21). A support rod (25) is symmetrically fixed to the top of the slide plate (12). An annular groove is provided at the bottom of the hollow shaft (23), and the top of the support rod (25) is slidably limited to the annular groove. A second bevel gear (22) is fixed to the outer wall of the hollow shaft (23). One side of the second bevel gear (22) meshes with the first bevel gear (21). Several connecting columns (26) are fixedly connected to the top of the hollow shaft (23) in an annular array. The outer wall of the connecting column (26) is slidably connected to the cylinder (27).

4. A precision auxiliary guiding mechanism for injection molds according to claim 3, characterized in that: The precision guiding mechanism also includes a semi-circular threaded post (13). The top of both housings (2) is fixed with a semi-circular threaded post (13). The two semi-circular threaded posts (13) can fit together when they move, and the threads on the outer walls of the two semi-circular threaded posts (13) match each other and match the threads on the inner wall of the round cover (14).

5. A precision auxiliary guiding mechanism for injection molds according to claim 4, characterized in that: It also includes a round shaft (28), and two round shafts (28) are symmetrically fixed to the outer sides of the two outer shells (2). A scraper (29) is slidably connected to one end of each pair of round shafts (28). Two rectangular slots are symmetrically opened on opposite sides of the two scrapers (29). The four round shafts (28) are respectively located in the four rectangular slots of the two scrapers (29). The two scrapers (29) are fixed to each other by a long plate, and the long plate is located on opposite sides of the two outer shells (2). When the long plate moves, it can match the through slots opened in the two outer shells (2). The two scrapers (29) are respectively located on both sides of the two outer shells (2) and are in contact with both sides of the two outer shells (2).

6. A precision auxiliary guiding mechanism for injection molds according to claim 5, characterized in that: It also includes an injection molding template (32), one of the housings (2) has an injection molding template (32) inside, one side of the injection molding template (32) has an injection port (15), and the injection port (15) extends to the outside of the other housing (2).

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