Injection mold accurate in positioning

Abstract

The utility model discloses an injection mold capable of accurately positioning, which comprises a bracket, wherein a lower mold seat is fixed at the bottom of the bracket; a servo motor is fixed to one side of the bottom of the support, a horizontal threaded rod is installed at the output end of the servo motor, the lower locking groove is formed in the top of the outer side face of the lower die base, and the upper locking groove is formed in the bottom of the outer side face of the upper die base. An electric telescopic rod is fixed to the top end of the movable plate in a penetrating mode, the bottom end of the electric telescopic rod is fixedly connected with the top face of a positioning plate, the bottom of the positioning plate is attached to the inner wall of a top positioning groove, and the top positioning groove is formed in the edge of the top face of the upper die base. According to the injection mold with the accurate positioning function, through the novel horizontal and vertical extrusion locking structures and the cooperation with an existing hydraulic driving mechanism, the upper mold base can be driven to vertically move rapidly and stably, after the upper mold base and the lower mold base are closed, the upper mold base and the lower mold base can be rapidly locked, and it is guaranteed that the upper mold base and the lower mold base are accurately closed.

Description

Technical Field

[0001] The utility model relates to the technical field of injection molds, in particular to an injection mold with accurate positioning. Background Art

[0002] In actual use, the existing injection mold with accurate positioning uses multiple sets of gear transmission to drive the symmetrically distributed vertical moving mechanism to drive the upper mold base to move vertically. The multiple sets of gears wear out greatly during operation, and there are gaps in the tooth-cam meshing. The continuous transmission of multiple sets of gears will magnify the gap, which not only makes it impossible to synchronously drive the symmetrically distributed vertical moving mechanism, but also makes it impossible to use the tooth-cam meshing to lock the vertical moving mechanism, resulting in the upper mold base being unable to be precisely locked.

[0003] For example, in the Chinese utility model patent entitled "A Precisely Positioned Injection Mold" with publication number CN220146564U, it includes a lower mounting seat, a fixed plate is installed on the top of the lower mounting seat, and sliding rods are vertically installed on the opposite sides of the top of the fixed plate, an upper mounting seat is slidably installed on the outside of a pair of sliding rods, and through holes are provided at the four internal corners of the upper mounting seat, a lower mold seat is installed on the inside of the fixed plate through fixing bolts, and a mold cavity is provided on the inside of the lower mold seat, a motor is installed on one side of the outside of the fixed plate, and a positioning mechanism is provided on the inside of the fixed plate, the positioning mechanism includes a pair of threaded rods, a push plate is slidably installed on the inside of the mold cavity, and a discharge mechanism is provided on both sides of the push plate, and the discharge mechanism includes a pair of sliding rods. In this patent solution, a total of 6 gears, namely the first active bevel gear, the second active bevel gear and the driven bevel gear, drive 2 threaded rods to rotate synchronously. The rotation of the threaded rods drives the upper mounting seat to drive the upper die seat to move vertically. Not only is there great wear between the gears, but also large errors will be generated after a period of use, making it impossible to drive the 2 threaded rods to rotate synchronously. Moreover, the complex structure only realizes a simple vertical drive function, which is out of touch with actual social needs.

[0004] In view of the problems existing in the existing injection molds with accurate positioning, it is necessary to provide a new technical solution. Utility Model Content

[0005] The purpose of the utility model is to provide an injection mold with accurate positioning to solve at least one technical problem existing in the above-mentioned background technology.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] An injection mold with accurate positioning, comprising:

[0008] A bracket, wherein a lower die seat is fixed at the bottom of the bracket, and a guide column is fixed at the corner of the top surface of the lower die seat, and the guide column passes through a limiting hole, and the limiting hole is opened at the corner of the upper die seat;

[0009] A bracket, a servo motor is fixed to one side of the bottom of the bracket, a horizontal threaded rod is installed at the output end of the servo motor, the horizontal threaded rod is rotatably installed in the limit groove through a bearing seat, the limit groove is opened at the edge of the top surface of the bottom of the bracket, the horizontal threaded rod is connected to the bottom end of the movable plate, the bottom end of the movable plate is arranged in the limit groove, a middle locking plate is fixed to one side of the vertical part of the movable plate, the bottom and top of the end of the middle locking plate are respectively fitted with the inner walls of the lower locking groove and the upper locking groove, the lower locking groove is opened at the top of the outer side surface of the lower mold base, and the upper locking groove is opened at the bottom of the outer side surface of the upper mold base;

[0010] A movable plate, wherein an electric telescopic rod is fixed through the top of the movable plate, the bottom end of the electric telescopic rod is connected and fixed to the top surface of the positioning plate, the bottom of the positioning plate is fitted with the inner wall of the top positioning groove, and the top positioning groove is arranged on the edge of the top surface of the upper mold base.

[0011] Preferably, a hydraulic rod is fixed through the center of the top of the bracket, and the bottom end of the hydraulic rod is connected and fixed to the center of the top surface of the upper mold base.

[0012] Preferably, the horizontal threaded rod is threadedly connected to the bottom end of the movable plate, the spiral directions of the threads on both sides of the center of the horizontal threaded rod are opposite, and the movable plate is symmetrically distributed about the center of the horizontal threaded rod.

[0013] Preferably, the movable plate is slidably connected to the limiting grooves, the limiting grooves are symmetrically distributed about the center of the bracket, and the length of the limiting grooves is greater than the length of the horizontal portion of the top of the movable plate.

[0014] Preferably, the movable plate has an "L" shape when viewed from the front, and a length of the movable plate when viewed from above is greater than half of a side length of the upper die seat.

[0015] Preferably, the middle locking plate is snap-fitted to the lower locking groove and the upper locking groove, and the middle locking plate, the lower locking groove and the upper locking groove are symmetrically distributed about the center of the bracket.

[0016] Preferably, the front view shape of the middle locking plate is a "concave" shape, the front view cross-sectional shapes of the lower locking groove and the upper locking groove are both "L" shaped, and the top end of the lower locking groove is aligned and fits with the bottom end of the upper locking groove.

[0017] Preferably, the electric telescopic rods are symmetrically distributed about the positioning plate, the positioning plate is snap-connected to the top positioning groove, and the top-view length of the positioning plate is greater than the top-view length of the movable plate.

[0018] Compared with the prior art, the beneficial effects of the utility model are:

[0019] The new horizontal and vertical extrusion locking structure, in conjunction with the existing hydraulic drive mechanism, can not only drive the upper die base to move vertically quickly and stably, but also quickly lock the upper die base and the lower die base after they are closed, ensuring that the upper die base and the lower die base are accurately closed;

[0020] 1. The utility model drives the horizontal threaded rod through a servo motor, and utilizes the characteristics that the spiral directions of the threads on both sides of the center of the horizontal threaded rod are opposite, so as to drive the symmetrical movable plate to slide horizontally along the limit groove with the middle locking plate, so that the middle locking plate is synchronously inserted into the lower locking groove and the upper locking groove, and the upper die base and the lower die base are closed and locked from the side;

[0021] 2. The utility model uses a movable plate to move the electric telescopic rod and the positioning plate horizontally to the top of the top positioning groove. After the middle locking plate is inserted into the lower locking groove and the upper locking groove, the electric telescopic rod is controlled to drive the positioning plate to move vertically downward and snap into the top positioning groove, so as to close and lock the upper mold base and the lower mold base from the top. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a front view structural schematic diagram of the utility model.

[0023] Figure 2 It is a front view cross-sectional structural schematic diagram of the utility model.

[0024] Figure 3 It is a schematic diagram of the top view of the movable plate and the positioning plate of the utility model.

[0025] Figure 4 It is a front view cross-sectional structural schematic diagram of the utility model in a state where the lower die base and the upper die base are separated.

[0026] In the figure: 1. bracket; 2. lower die base; 3. guide column; 4. limit hole; 5. upper die base; 6. hydraulic rod; 7. servo motor; 8. horizontal threaded rod; 9. limit slot; 10. movable plate; 11. middle locking plate; 12. lower locking slot; 13. upper locking slot; 14. electric telescopic rod; 15. positioning plate; 16. top positioning slot. DETAILED DESCRIPTION

[0027] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below in conjunction with specific implementation methods.

[0028] In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front end", "rear end", "two ends", "one end", "the other end" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0029] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0030] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0031] See also Figure 1-4 , an embodiment provided by the utility model:

[0032] An injection mold with accurate positioning, comprising:

[0033] The bracket 1 has a lower die seat 2 fixed at the bottom thereof, a guide column 3 fixed at the corner of the top surface of the lower die seat 2, the guide column 3 passes through a limit hole 4, the limit hole 4 is provided at the corner of the upper die seat 5, a hydraulic rod 6 is passed through the center of the top of the bracket 1, and the bottom end of the hydraulic rod 6 is connected and fixed to the center of the top surface of the upper die seat 5, and the above structural design can stably drive the upper die seat 5 to move vertically;

[0034] Bracket 1, a servo motor 7 is fixed to one side of the bottom of the bracket 1, a horizontal threaded rod 8 is installed at the output end of the servo motor 7, the horizontal threaded rod 8 is rotatably installed in the limit groove 9 through the bearing seat, the limit groove 9 is arranged at the edge of the top surface of the bottom of the bracket 1, the horizontal threaded rod 8 is connected to the bottom end of the movable plate 10, the horizontal threaded rod 8 and the bottom end of the movable plate 10 are threadedly connected, the spiral directions of the threads on both sides of the center of the horizontal threaded rod 8 are opposite, the movable plate 10 is symmetrically distributed about the center of the horizontal threaded rod 8, the above-mentioned structural design enables the horizontal threaded rod 8 to stably drive the movable plates 10 symmetrically distributed at both ends to perform reverse displacement at the same speed when rotating, the bottom end of the movable plate 10 is arranged in the limit groove 9, and the movable plate 10 and the limit groove 9 are The limit grooves 9 are symmetrically distributed about the center of the bracket 1, and the length of the limit grooves 9 is greater than the length of the horizontal part of the top of the movable plate 10. The above structural design enables the movable plate 10 to slide linearly along the limit grooves 9 under the drive of the horizontal threaded rod 8. The length of the limit grooves 9 can ensure that the positioning plate 15 installed on the top of the movable plate 10 can be sufficiently displaced horizontally and completely away from the top of the upper mold base 5. A middle locking plate 11 is fixed to one side of the vertical part of the movable plate 10. The bottom and top of the end of the middle locking plate 11 are respectively fitted with the inner walls of the lower locking groove 12 and the upper locking groove 13. The lower locking groove 12 is opened at the top of the outer side of the lower mold base 2, and the upper locking groove 13 is opened at the bottom of the outer side of the upper mold base 5.

[0035] The movable plate 10 has an electric telescopic rod 14 fixed on its top, the bottom of which is connected and fixed to the top surface of the positioning plate 15 , the bottom of the positioning plate 15 is fitted with the inner wall of the top positioning groove 16 , and the top positioning groove 16 is provided on the top edge of the upper mold base 5 .

[0036] In one embodiment, the front view shape of the movable plate 10 is "L" shape, and the top view length of the movable plate 10 is greater than half of the side length of the upper mold base 5. The above-mentioned structural design enables the movable plate 10 to provide a stable installation foundation for the middle locking plate 11, the electric telescopic rod 14 and the positioning plate 15, and ensures the stability of the middle locking plate 11, the electric telescopic rod 14 and the positioning plate 15 during operation.

[0037] In one of the preferred embodiments, the middle locking plate 11 is snap-connected with the lower locking groove 12 and the upper locking groove 13, and the middle locking plate 11, the lower locking groove 12 and the upper locking groove 13 are symmetrically distributed about the center of the bracket 1. The above-mentioned structural design enables the lower mold base 2 and the upper mold base 5 to be horizontally extruded and positioned after the middle locking plate 11 is inserted into the lower locking groove 12 and the upper locking groove 13, and horizontal displacement of the upper mold base 5 and the lower mold base 2 can be avoided.

[0038] In one of the embodiments, the front view shape of the middle locking plate 11 is a "concave" shape, the front view cross-sectional shapes of the lower locking groove 12 and the upper locking groove 13 are both "L" shaped, and the top of the lower locking groove 12 is aligned and fits with the bottom of the upper locking groove 13. The above structural design ensures that the middle locking plate 11 can be tightly fitted and connected with the lower locking groove 12 and the upper locking groove 13, thereby ensuring the locking effect of the upper mold base 5 and the lower mold base 2.

[0039] In one of the preferred embodiments, the electric telescopic rod 14 is symmetrically distributed about the positioning plate 15, the positioning plate 15 is snap-fitted with the top positioning groove 16, the top-view length of the positioning plate 15 is greater than the top-view length of the movable plate 10, and the above-mentioned structural design enables the electric telescopic rod 14 to stably drive the positioning plate 15 to move vertically, and after the positioning plate 15 is snap-fitted with the top positioning groove 16, the upper mold base 5 and the lower mold base 2 can be vertically extruded and positioned.

[0040] The working principle of the utility model is: the initial state of the device is as follows: Figure 4 As shown, when using this device, control Figure 2 The hydraulic rod 6 in the middle extends, pushing the upper die base 5 to move vertically downward, and the upper die base 5 with the limiting hole 4 slides vertically down along the guide column 3 until the bottom surface of the upper die base 5 fits with the top surface of the lower die base 2, and the hydraulic rod 6 is controlled to stop working;

[0041] Then, the servo motor 7 is controlled to drive the horizontal threaded rod 8 to rotate forward. The horizontal threaded rod 8 uses the threads with opposite spiral directions at both ends to drive the symmetrically distributed movable plates 10 with the middle locking plate 11 to slide horizontally along the limit groove 9 toward the center of the bracket 1 synchronously until Figure 2 In the state shown, the end of the middle locking plate 11 is inserted into the lower locking groove 12 and the upper locking groove 13, and the servo motor 7 is controlled to stop working to lock the horizontal threaded rod 8, and the horizontal threaded rod 8 fixes the position of the movable plate 10 by thread self-locking;

[0042] At this time, the positioning plate 15 is also driven by the movable plate 10 to move horizontally to the top of the top positioning groove 16, and the symmetrically distributed electric telescopic rods 14 are controlled to extend synchronously, pushing the positioning plate 15 to move vertically downward and snap into the top positioning groove 16, completing the rapid positioning and locking of the upper mold base 5 and the lower mold base 2, and then the upper mold base 5 and the lower mold base 2 can be used for injection molding production according to normal operation.

[0043] The above is only an embodiment of the utility model, and the common sense such as the known specific structure and characteristics in the scheme is not described too much here. For those skilled in the art, it is obvious that the utility model is not limited to the details of the above exemplary embodiments, and the utility model can be implemented in other specific forms without departing from the spirit or basic features of the utility model. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the utility model is limited by the attached claims rather than the above description, and it is intended to include all changes within the meaning and scope of the equivalent elements of the claims in the utility model. Any figure mark in the claims should not be regarded as limiting the claims involved.

Claims

1. An injection mold with accurate positioning, characterized in that: It includes: A bracket (1), wherein a lower die seat (2) is fixed at the bottom of the bracket (1), a guide column (3) is fixed at the corner of the top surface of the lower die seat (2), the guide column (3) passes through a limiting hole (4), and the limiting hole (4) is provided at the corner of the upper die seat (5); A bracket (1), a servo motor (7) is fixed on one side of the bottom of the bracket (1), a horizontal threaded rod (8) is installed on the output end of the servo motor (7), the horizontal threaded rod (8) is rotatably installed in a limiting groove (9) through a bearing seat, the limiting groove (9) is opened at the edge of the top surface of the bottom of the bracket (1), the horizontal threaded rod (8) is connected to the bottom end of a movable plate (10), the bottom end of the movable plate (10) is arranged in the limiting groove (9), a middle locking plate (11) is fixed on one side of the vertical part of the movable plate (10), the bottom and top of the end of the middle locking plate (11) are respectively fitted with the inner walls of a lower locking groove (12) and an upper locking groove (13), the lower locking groove (12) is opened at the top of the outer side of the lower mold base (2), and the upper locking groove (13) is opened at the bottom of the outer side of the upper mold base (5); A movable plate (10), wherein an electric telescopic rod (14) is fixedly passed through the top end of the movable plate (10), the bottom end of the electric telescopic rod (14) is connected and fixedly connected to the top surface of the positioning plate (15), the bottom of the positioning plate (15) is in contact with the inner wall of the top positioning groove (16), and the top positioning groove (16) is provided on the top surface edge of the upper mold base (5).

2. The accurately positioned injection mold according to claim 1, characterized in that: A hydraulic rod (6) is fixedly passed through the center of the top of the bracket (1), and the bottom end of the hydraulic rod (6) is connected and fixedly connected to the center of the top surface of the upper die seat (5).

3. The accurately positioned injection mold according to claim 1, characterized in that: The horizontal threaded rod (8) is threadedly connected to the bottom end of the movable plate (10), the spiral directions of the threads on both sides of the center of the horizontal threaded rod (8) are opposite, and the movable plate (10) is symmetrically distributed about the center of the horizontal threaded rod (8).

4. The accurately positioned injection mold according to claim 1, characterized in that: The movable plate (10) is slidably connected to the limiting groove (9); the limiting groove (9) is symmetrically distributed about the center of the bracket (1); and the length of the limiting groove (9) is greater than the length of the horizontal portion of the top of the movable plate (10).

5. The accurately positioned injection mold according to claim 1, characterized in that: The movable plate (10) is in an "L" shape when viewed from the front, and the length of the movable plate (10) when viewed from the top is greater than half the side length of the upper die seat (5).

6. The accurately positioned injection mold according to claim 1, characterized in that: The middle locking plate (11) is snap-fitted to the lower locking groove (12) and the upper locking groove (13); the middle locking plate (11), the lower locking groove (12) and the upper locking groove (13) are symmetrically distributed about the center of the bracket (1).

7. The accurately positioned injection mold according to claim 1, characterized in that: The front view shape of the middle locking plate (11) is a "concave" shape, the front view cross-sectional shapes of the lower locking groove (12) and the upper locking groove (13) are both "L" shapes, and the top end of the lower locking groove (12) is aligned and fits with the bottom end of the upper locking groove (13).

8. The accurately positioned injection mold according to claim 1, characterized in that: The electric telescopic rod (14) is symmetrically distributed with respect to the positioning plate (15), the positioning plate (15) is snap-fitted to the top positioning groove (16), and the top view length of the positioning plate (15) is greater than the top view length of the movable plate (10).

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