A mold

Abstract

The present application discloses a mold, which relates to the technical field of molds, including an upper mold, a lower mold, and a guide structure arranged between the upper mold and the lower mold, wherein the guide structure includes a guide plate, a positioning rod, and a positioning cylinder arranged on the outer wall of the positioning rod, wherein both ends of the guide plate are provided with guide grooves, and the upper mold and the lower mold side walls are provided with threaded holes for threaded connection of the positioning rod, and the openings of the threaded holes are provided with receiving grooves, and the positioning cylinder is provided with an annular convex at one end away from the receiving groove, and when the positioning rod passes through the positioning cylinder and is threadedly connected to the threaded hole, the positioning cylinder passes through the guide groove and is inserted into the receiving groove, and the annular convex can abut against the surface of the guide plate, and when the first mold and the second mold move relative to each other, the positioning cylinder can move in the guide groove. The present application can improve the stability of the mold when it is used.

Description

Technical Field

[0001] The present application relates to the technical field of molds, and in particular to a mold. Background Art

[0002] At present, there are more and more plastic products and parts. In order to prepare products of different shapes, molds are usually used for injection molding.

[0003] Reference Figure 1 The mold in the related art usually includes an upper mold 1 and a lower mold 2, and there is an injection cavity between the upper mold 1 and the lower mold 2. After the upper mold 1 and the lower mold 2 are spliced ​​together, the molten raw material is injected into the injection cavity. After the upper mold 1 and the lower mold 2 are cooled and formed, the upper and lower molds 2 are separated from each other so that the molded product can be taken out. A positioning plate 3 is also connected between the upper mold 1 and the lower mold 2. The positioning plate 3 is provided with a waist groove. The upper mold 1 and the lower mold 2 are both threadedly connected with a positioning bolt 4 that passes through the waist groove. When the upper mold 1 and the lower mold 2 move, the positioning bolt 4 can move in the waist groove, thereby reducing the displacement of the upper mold 1 and the lower mold 2 during the movement, thereby reducing the production of defective products produced by injection molding.

[0004] When the upper and lower molds 2 are moving, the positioning bolts 4 can move in the waist-shaped grooves to guide the upper and lower molds 2. However, after being used for a period of time, the positioning bolts 4 may become loose, thereby reducing the guiding effect on the upper and lower molds 2, which may affect the quality of subsequent products. Summary of the invention

[0005] In order to improve the guiding effect of the upper and lower molds during movement, the present application provides a mold.

[0006] The present application provides a mold, which adopts the following technical solution:

[0007] A mold, comprising an upper mold, a lower mold and a guide structure arranged between the upper mold and the lower mold, the guide structure comprising a guide plate, a positioning rod and a positioning cylinder arranged on the outer wall of the positioning rod, guide grooves are provided at both ends of the guide plate, threaded holes for threaded connection of the positioning rod are provided on the side walls of the upper mold and the lower mold, a receiving groove is provided at the opening of the threaded hole, an annular convex is provided at one end of the positioning cylinder away from the receiving groove, when the positioning rod passes through the positioning cylinder and is threadedly connected to the threaded hole, the positioning cylinder passes through the guide groove and is inserted into the receiving groove, and the annular convex can abut against the surface of the guide plate, and when the first mold and the second mold move relatively, the positioning cylinder can move in the guide groove;

[0008] The outer wall of the positioning cylinder is provided with a first protrusion and a second protrusion, the inner wall of the accommodating groove is provided with a sliding groove for the first protrusion and the second protrusion to slide along the axial direction of the accommodating groove, and a circumferential groove for the first protrusion and the second protrusion to rotate circumferentially, the sliding groove and the circumferential groove are connected, the second protrusion can move along the circumference of the positioning cylinder, and the positioning rod is provided with a driving member for driving the second protrusion to slide along the circumference of the positioning cylinder.

[0009] By adopting the above technical solution, when the positioning rod is threadedly connected to the threaded hole, the positioning cylinder can be inserted into the receiving groove, and the annular protrusion can abut against the surface of the guide plate, so that the guide plate is clamped between the mold side wall and the annular protrusion, thereby guiding the upper and lower molds when they move. The positioning rod passes through the positioning cylinder, and the positioning cylinder can rotate on the outer wall of the positioning rod. When the positioning cylinder is inserted into the receiving groove, the first protrusion and the second protrusion can slide along the slide groove and move to the position of the circumferential groove. After the second protrusion is driven to slide by the driving member, the second protrusion and the slide groove are staggered, so that the positioning cylinder cannot be separated from the receiving groove, and when the positioning cylinder rotates, the first protrusion and the second protrusion can rotate in the circumferential groove, so that the distance between the positioning cylinder and the mold is not easy to change, thereby maintaining the guiding effect.

[0010] Optionally, an outer wall of the positioning tube is provided with an arc-shaped groove, the arc-shaped groove extends along the circumference of the positioning tube, an arc-shaped plate is slidably arranged in the arc-shaped groove, and the second protrusion is arranged on the arc-shaped plate.

[0011] By adopting the above technical solution, the arc plate is slidably connected to the side wall of the positioning tube through the arc groove, and the second protrusion is installed on the arc plate, thereby realizing the sliding of the second protrusion.

[0012] Optionally, a long groove is provided on the positioning tube, and the long groove extends in a direction parallel to the axis of the positioning tube, and the long groove and the arc groove are staggered. The driving member includes a driving rod slidably set in the long groove, and a through hole is provided on the arc plate, and one end of the driving rod has an end surface extending beyond the positioning tube. A protrusion is provided at the end of the positioning rod. When the positioning rod is threadedly connected to the threaded hole, the protrusion can abut against the driving rod and allow the driving rod to pass through the through hole. When the driving rod passes through the through hole, it can drive the arc plate to slide in the arc groove. An elastic member is also provided in the arc groove. When the driving rod slides out of the through hole, the elastic member can drive the arc plate to slide to its original position.

[0013] By adopting the above technical solution, one end of the driving rod has an end surface that exceeds the positioning tube. When the positioning rod is threadedly connected to the threaded hole, the protrusion abuts against the end of the driving rod, thereby driving the driving rod to slide in the direction close to the threaded hole. The driving rod passes through the through hole, thereby causing the arc plate to slide and drive the second protrusion to move. When the driving rod is pulled out, the second protrusion can slide to its original position under the action of the elastic member, thereby allowing the positioning tube to slide out of the accommodating groove.

[0014] Optionally, the elastic member is a spring arranged in the arc groove, one end of the spring is connected to the inner end surface of the arc groove, and the other end is connected to the end of the arc plate, and when the driving rod passes through the through hole, the spring is in a compressed state.

[0015] By adopting the above technical solution, the spring can provide elastic force to drive the arc plate to return.

[0016] Optionally, one end of the driving rod close to the arc-shaped plate is a pointed structure.

[0017] By adopting the above technical solution, it is more convenient for the driving rod to pass through the through hole of the arc plate and drive the arc plate to slide.

[0018] Optionally, two second protrusions are symmetrically arranged along the side wall of the positioning tube, and two driving rods are also symmetrically arranged. The ends of the two driving rods have portions that extend beyond the end of the positioning tube, and the ends of the two driving rods are connected to the same circular ring.

[0019] By adopting the above technical solution, the stability of the positioning tube in the accommodating groove is improved.

[0020] Optionally, an annular groove is formed on the protrusion, and when the protrusion abuts against the end of the positioning tube, the ring can be accommodated in the annular groove and can rotate in the annular groove.

[0021] By adopting the above technical solution, the circular ring can move in the annular groove, thereby realizing the rotation of the positioning cylinder, and the protrusion can abut against the end surface of the positioning cylinder, thereby improving the stability of the structure.

[0022] Optionally, a limiting plate is provided on the outer wall of the positioning cylinder, and the limiting plate covers the opening of the arc groove to limit the arc plate from detaching from the arc groove.

[0023] By adopting the above technical solution, the installation and disassembly of the curved plate are facilitated.

[0024] In summary, the present application includes at least one of the following beneficial effects:

[0025] 1. After the first and second protrusions are inserted into the circumferential groove through the slide groove, the second protrusion can slide under the action of the driving member, so that the positioning cylinder cannot be separated from the accommodating groove, thereby improving the stability during guidance. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a structural schematic diagram of the related technology;

[0027] Figure 2 It is a schematic diagram of the structure of an embodiment of the present application;

[0028] Figure 3 is an exploded schematic diagram of a guide structure in an embodiment of the present application;

[0029] Figure 4 yes Figure 3 The enlarged schematic diagram of point A in the middle;

[0030] Figure 5 is an exploded schematic diagram of a positioning rod and a positioning cylinder in an embodiment of the present application;

[0031] Figure 6 is a cross-sectional schematic diagram of a positioning cylinder in an embodiment of the present application;

[0032] Figure 7 It is a schematic diagram of the structure of the ring groove in the embodiment of the present application.

[0033] Explanation of the accompanying drawings: 1. upper mold; 2. lower mold; 3. positioning plate; 4. positioning bolt; 5. guide structure; 51. guide plate; 52. positioning rod; 53. positioning cylinder; 6. guide groove; 7. threaded hole; 8. accommodating groove; 9. annular convexity; 10. first protrusion; 11. second protrusion; 12. sliding groove; 13. circumferential groove; 14. driving member; 141. driving rod; 15. arc groove; 16. arc plate; 17. long groove; 18. perforation; 19. protrusion; 20. elastic member; 21. circular ring; 22. annular groove; 23. limiting plate. DETAILED DESCRIPTION

[0034] The following is combined with Figure 2-7 This application is described in further detail.

[0035] The present application embodiment discloses a mold. Figure 2 The mold includes an upper mold 1 and a lower mold 2. The upper mold 1 and the lower mold 2 can move closer to or farther from each other, and an external power source drives the upper mold 1 and the lower mold 2 to move. For the sake of convenience, the power source is not shown in the drawings. Guide structures 5 are symmetrically installed on both sides of the mold, and two guide structures 5 are installed on each side.

[0036] Reference Figure 3 and Figure 4The guide structure 5 includes a guide plate 51 , a positioning rod 52 and a positioning tube 53 installed on the outer wall of the positioning rod 52 . The positioning rod 52 passes through the positioning tube 53 , and the positioning tube 53 can rotate on the outer wall of the positioning rod 52 .

[0037] Reference Figure 3 and Figure 4 Two guide grooves 6 are symmetrically provided on the guide plate 51, and the positioning rods 52 are arranged corresponding to the guide grooves 6, and the positioning rods 52 are respectively passed through the guide grooves 6 and connected to the upper mold 1 and the lower mold 2. The guide grooves 6 extend along the length direction of the guide plate 51, so that when the upper mold 1 and the lower mold 2 move, the positioning rods 52 can move relatively in the guide grooves 6. Four guide structures 5 are symmetrically arranged on both sides of the mold, so that the upper mold 1 and the lower mold 2 are between the four guide plates 51.

[0038] Reference Figure 3 and Figure 4 , threaded holes 7 are provided on the side walls of the upper mold 1 and the lower mold 2, and the positioning rod 52 passes through the guide groove 6 and is threadedly connected to the threaded hole 7. The positioning cylinder 53 is sleeved on the outer wall of the positioning rod 52, and a receiving groove 8 is coaxially provided at the opening of the threaded hole 7. When the positioning rod 52 is threadedly connected in the threaded hole 7, the positioning cylinder 53 can pass through the guide groove 6 and be inserted into the receiving groove 8. An annular protrusion 9 is coaxially fixed to the end of the positioning cylinder 53, and a convex block 19 is provided at the end of the positioning rod 52. The convex block 19 can abut against the end of the positioning cylinder 53 and drive the positioning cylinder 53 to abut against the receiving groove 8 until the annular protrusion 9 abuts against the guide plate 51, and at this time, the distance between the annular protrusion 9 and the mold surface is equal to the thickness of the guide plate 51. The diameter of the positioning cylinder 53 is matched with the width of the guide groove 6. When the upper mold 1 and the lower mold 2 move relative to each other, the positioning cylinder 53 can move in the guide groove 6, and the outer wall of the positioning cylinder 53 abuts against the inner wall of the guide groove 6. When the positioning cylinder 53 moves in the guide groove 6, the positioning cylinder 53 can rotate.

[0039] Reference Figure 3 and Figure 4, four slide grooves 12 are evenly provided on the inner wall of the receiving groove 8 along the circumference of the receiving groove 8, and the slide grooves 12 extend along the axial direction of the receiving groove 8. A circumferential groove 13 is also provided on the inner wall of the receiving groove 8, and the circumferential groove 13 extends along the circumference of the receiving groove 8, and one end of the slide groove 12 away from the opening of the receiving groove 8 is connected to the circumferential groove 13. Two first protrusions 10 and two second protrusions 11 are symmetrically installed on the outer wall of the positioning cylinder 53, and the first protrusions 10 and the second protrusions 11 are evenly arranged along the circumference of the positioning cylinder 53. When the positioning cylinder 53 is inserted into the receiving groove 8, the first protrusion 10 and the second protrusion 11 correspond to the slide grooves 12 respectively and slide into the slide grooves 12, and when the annular protrusion 9 abuts against the surface of the guide plate 51, the first protrusion 10 and the second protrusion 11 are both located in the circumferential groove 13, that is, when the positioning cylinder 53 rotates, the first protrusion 10 and the second protrusion 11 can move in the circumferential groove 13. In order to facilitate installation, the inner wall of the guide groove 6 may be provided with holes for the first protrusion 10 and the second protrusion 11 to pass through.

[0040] Reference Figure 4 and Figure 5 A driving member 14 is installed on the positioning rod 52 for driving the second protrusion 11 to slide circumferentially along the positioning cylinder 53. When the first protrusion 10 and the second protrusion 11 slide into the circumferential groove 13, the driving member 14 drives the second protrusion 11 to move circumferentially along the positioning cylinder 53, so that the positions of the second protrusion 11 and the slide groove 12 are staggered, and the positioning cylinder 53 cannot be separated from the accommodating groove 8, thereby improving the stability of the upper mold 1 and the lower mold 2 during the guiding process.

[0041] Reference Figure 5 and Figure 6The outer wall of the positioning tube 53 is provided with an arc groove 15, the arc groove 15 and the positioning tube 53 are coaxially arranged, an arc plate 16 is slidably installed in the arc groove 15, and the second protrusion 11 is installed on the arc plate 16, so that the second protrusion 11 slides on the outer wall of the positioning tube 53. The positioning tube 53 is provided with a long groove 17 parallel to the axial direction of the positioning tube 53, and the long groove 17 is connected to the arc groove 15. The driving member 14 includes a driving rod 141 slidably connected to the long slot 17. A through hole 18 is provided on the arc plate 16. The end of the driving rod 141 is a pointed structure so that the end of the driving rod 141 has an inclined slope. When the driving rod 141 slides into the long slot 17, the driving rod 141 can pass through the through hole 18. The through hole 18 and the end of the driving rod 141 are not directly opposite, so that the inclined surface of the end of the driving rod 141 can abut against the side wall of the through hole 18. The driving rod 141 continues to move, which can drive the arc plate 16 to slide, and then drive the second protrusion 11 to slide. An elastic member 20 is also installed in the arc slot 15. When the driving rod 141 is pulled out of the through hole 18, the elastic member 20 can drive the arc plate 16 to slide to the original position, which can make the first protrusion 10 and the second protrusion 11 correspond to the slide slot 12, so that the positioning cylinder 53 can slide out of the receiving slot 8.

[0042] Reference Figure 6 The elastic member 20 includes a spring mounted on the inner end surface of the arc groove 15, and the other end of the spring is connected to the end surface of the arc plate 16. A limit plate 23 is also mounted on the outer wall of the positioning cylinder 53, and the limit plate 23 covers a part of the opening of the arc groove 15, so that the arc plate 16 cannot be separated from the arc groove 15.

[0043] Reference Figure 7 The ends of the two driving rods 141 have portions extending out of the ends of the positioning cylinder 53 and are connected to the same ring 21. When the positioning rod 52 moves, the protrusion 19 can abut against the ring 21, thereby driving the driving rod 141 to slide into the long groove 17. The protrusion 19 is provided with an annular groove 22 for accommodating the ring 21. When the positioning cylinder 53 rotates, the ring 21 can rotate in the annular groove 22.

[0044] The implementation principle of a mold in an embodiment of the present application is as follows: the positioning rod 52 is threadedly connected to the threaded hole 7, so that the positioning cylinder 53 is inserted into the accommodating groove 8. The positioning rod 52 continues to move to push the driving rod 141 to slide in the long groove 17. The driving rod 141 passes through the arc plate 16 to drive the second protrusion 11 to slide. After the second protrusion 11 and the slide groove 12 are misaligned, the positioning cylinder 53 cannot be separated from the accommodating groove 8. The positioning rod 52 continues to move, so that the annular protrusion 9 abuts against the surface of the guide plate 51, so that when the upper mold 1 and the lower mold 2 move, the positioning cylinder 53 can be guided and is not easily offset.

[0045] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A mold, comprising an upper mold (1), a lower mold (2), and a guide structure (5) arranged between the upper mold (1) and the lower mold (2), characterized in that: The guide structure (5) comprises a guide plate (51), a positioning rod (52) and a positioning cylinder (53) arranged on the outer wall of the positioning rod (52); guide grooves (6) are provided at both ends of the guide plate (51); threaded holes (7) for threaded connection of the positioning rod (52) are provided on the side walls of the upper mold (1) and the lower mold (2); a receiving groove (8) is provided at the opening of the threaded hole (7); an annular protrusion (9) is provided at one end of the positioning cylinder (53) away from the receiving groove (8); when the positioning rod (52) passes through the positioning cylinder (53) and is threadedly connected to the threaded hole (7), the positioning cylinder (53) passes through the guide groove (6) and is inserted into the receiving groove (8), and the annular protrusion (9) can abut against the surface of the guide plate (51); when the first mold and the second mold move relative to each other, the positioning cylinder (53) can move in the guide groove (6); The outer wall of the positioning cylinder (53) is provided with a first protrusion (10) and a second protrusion (11); the inner wall of the accommodating groove (8) is provided with a sliding groove (12) for allowing the first protrusion (10) and the second protrusion (11) to slide along the axial direction of the accommodating groove (8), and a circumferential groove (13) for allowing the first protrusion (10) and the second protrusion (11) to rotate circumferentially; the sliding groove (12) and the circumferential groove (13) are connected; the second protrusion (11) can move circumferentially along the positioning cylinder (53); and the positioning rod (52) is provided with a driving member (14) for driving the second protrusion (11) to slide circumferentially along the positioning cylinder (53); An arc-shaped groove (15) is formed on the outer wall of the positioning tube (53), the arc-shaped groove (15) extends along the circumference of the positioning tube (53), an arc-shaped plate (16) is slidably arranged in the arc-shaped groove (15), and the second protrusion (11) is arranged on the arc-shaped plate (16); The positioning tube (53) is provided with a long groove (17), the long groove (17) extending in a direction parallel to the axis of the positioning tube (53), the long groove (17) and the arc groove (15) intersecting each other, the driving member (14) comprising a driving rod (141) slidably arranged in the long groove (17), the arc plate (16) is provided with a through hole (18), one end of the driving rod (141) has an end surface extending beyond the positioning tube (53), the end of the positioning rod (52) is provided with a protrusion (19), the positioning rod (5 2) when the threaded connection is made to the threaded hole (7), the protrusion (19) can abut against the driving rod (141) and allow the driving rod (141) to pass through the through hole (18); when the driving rod (141) passes through the through hole (18), the arc plate (16) can be driven to slide in the arc groove (15); an elastic member (20) is further provided in the arc groove (15); when the driving rod (141) slides out of the through hole (18), the elastic member (20) can drive the arc plate (16) to slide to its original position; The elastic member (20) is a spring disposed in the arc groove (15), one end of the spring is connected to the inner end surface of the arc groove (15), and the other end is connected to the end of the arc plate (16), and when the driving rod (141) passes through the through hole (18), the spring is in a compressed state; One end of the driving rod (141) close to the arc-shaped plate (16) is a tip structure.

2. A mold according to claim 1, characterized in that: Two second protrusions (11) are symmetrically arranged along the side wall of the positioning cylinder (53), and two driving rods (141) are also symmetrically arranged. The ends of the two driving rods (141) have portions that extend beyond the end of the positioning cylinder (53), and the ends of the two driving rods (141) are connected to the same circular ring (21).

3. A mold according to claim 2, characterized in that: The protrusion (19) is provided with an annular groove (22). When the protrusion (19) abuts against the end of the positioning tube (53), the ring (21) can be accommodated in the annular groove (22) and can rotate in the annular groove (22).

4. A mold according to claim 3, characterized in that: The outer wall of the positioning cylinder (53) is provided with a limiting plate (23), and the limiting plate (23) covers the opening of the arc groove (15) to limit the arc plate (16) from being separated from the arc groove (15).

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