Large-stroke core-pulling reset mechanism for driving injection mold

Abstract

The utility model discloses a large-stroke core-pulling reset mechanism for driving an injection mold, which comprises a static mold, a core-pulling reset mechanism and a core-pulling reset mechanism, wherein one side of the static mold is fixedly connected with a working bottom plate; one side of the core-pulling reset assembly is fixedly connected with the top of the working bottom plate, and the core-pulling reset assembly is used for controlling the core-pulling sequence; and one side of the driving assembly is fixedly connected with the top of the working bottom plate, and the driving assembly is used for directly driving related structures to operate. According to the large-stroke core-pulling reset mechanism for driving the injection mold, the core-pulling reset assembly is arranged, the top of the central pushing plate is connected with the driving assembly through the space between the central pushing plate and the movable groove frame, and after driving is started, the central pushing plate is certainly driven in advance; the movable groove frame can be driven to move, and the separation sequence is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of injection molds, in particular to a long-stroke core-pulling and resetting mechanism for driving an injection mold. Background Art

[0002] The core-pulling and resetting mechanism in the injection mold is a device used to ensure that the core can be smoothly reset and restored to its original position after the mold is opened.

[0003] Patent No. CN203580041U discloses a self-resetting lateral core-pulling mechanism for an injection mold, comprising an inclined guide block, a core-pulling slider, a locking pin, and a drive spring. The inclined guide block is mounted on the upper mold of the mold, and the upper and lower portions of the outer side surface of the inclined guide block are respectively a concave arc surface and an outwardly inclined inclined surface, while the inner side surface of the inclined guide block is an outwardly inclined inclined surface. A trapezoidal groove is provided in the middle of the upper end surface of the core-pulling slider, and the outer groove wall surface and the front and rear groove wall surfaces of the groove are all vertical surfaces, while the inner side wall surface is an outwardly inclined inclined surface. A waist-shaped groove is provided on the front and rear groove wall surfaces of the groove, and an inclined hole leading to the bottom surface of the core-pulling slider is provided on the outer groove wall surface of the groove. Both ends of the locking pin are embedded in the waist-shaped groove in the groove of the core-pulling slider. The drive spring is mounted in the inclined hole of the core-pulling slider, and the upper end of the drive spring is connected to the middle portion of the locking pin.

[0004] As shown in the above technology, during the use of ordinary injection molds, the core-pulling structure is directly fixedly connected to the external driving mechanism. When running with a large stroke, it is sometimes pulled simultaneously with the movable mold during external pulling. Both are separated from the finished plastic part at the same time, which may generate uneven tension or stress on the plastic part, causing deformation of the plastic part. Utility Model Content

[0005] In response to the shortcomings of the existing technology, the utility model provides a large-stroke core pulling and resetting mechanism for driving an injection mold, which solves the problem that when the large stroke is running, the core pulling is sometimes pulled at the same time as the movable mold, and both are separated from the finished plastic part at the same time, which may generate uneven pulling force or stress on the plastic part, causing deformation of the plastic part.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solutions: a large-stroke core-pulling and resetting mechanism for driving an injection mold, comprising:

[0007] A static mold, one side of which is fixedly connected to a working base plate;

[0008] A core pulling reset assembly, one side of which is fixedly connected to the top of the working base plate, and the core pulling reset assembly is used to control the core pulling sequence;

[0009] A drive assembly, one side of which is fixedly connected to the top of the working base plate, and the drive assembly is used to directly drive the relevant structure to operate.

[0010] Preferably, the core-pulling resetting assembly includes a track plate fixedly connected to the middle of the top of the working base plate, a T-slot is provided on the surface of the track plate, a sliding block is movably connected to the inner wall of the T-slot, the top of the sliding block is fixedly connected to a movable base, and the top of the movable base is movably connected to a movable slot frame.

[0011] Preferably, a central push plate is fixedly connected to the top of the movable base, and one side of the central push plate is fixedly connected to the core via a connecting rod.

[0012] Preferably, baffles are fixedly connected to both sides of the working base plate, a spring is fixedly connected to the bottom of the baffle, a stabilizing plate is fixedly connected to the bottom end of the spring, a protruding rounded block is fixedly connected to the middle of the top of the stabilizing plate, and protruding block blocks are fixedly connected to both sides of the top of the stabilizing plate.

[0013] Preferably, the driving assembly includes a support plate fixedly connected to the top of the working base plate, and a driving telescopic rod is fixedly connected to one side of the support plate.

[0014] Preferably, one end of the driving telescopic rod is rotatably connected to a contact plate, and the surface of the contact plate is movably connected to a connecting frame.

[0015] The utility model provides a long-stroke core-pulling and resetting mechanism for driving an injection mold. Compared with the prior art, it has the following advantages:

[0016] (1) The large-stroke core-pulling reset mechanism used to drive the injection mold utilizes the setting of the core-pulling reset component, passes through the space between the central push plate and the movable slot frame, and the top of the central push plate is connected to the driving component. After the drive starts, the central push plate must be driven first, and the central push plate drives the core to move at the same time. Only after the central push plate moves a short distance can it drive the movable slot frame to move, thereby ensuring the order of separation. After the core is pulled out, the molding module of the mold will start to move. By first driving the core away from the molded part, it can be ensured that the core is smoothly separated from the inner cavity of the plastic part, avoiding deformation of the plastic part. Through the setting of the protruding fillet block and the protruding stop block, even if the movable slot frame moves first due to various interference factors, it will be directly blocked by the protruding stop block, thereby ensuring the movement order.

[0017] (2) The large-stroke core-pulling and resetting mechanism used to drive the injection mold utilizes the setting of the driving component to drive the connecting frame through the contact plate. When maintaining it, the contact plate can be directly rotated around the driving telescopic rod to separate the contact plate from the connecting frame, which is convenient for the staff to quickly maintain it. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a three-dimensional schematic diagram of the utility model;

[0019] Figure 2 For this utility model Figure 1 A partial enlarged view of point A in the middle;

[0020] Figure 3 For this utility model Figure 1 A partial enlarged view of point B in the middle;

[0021] Figure 4 It is a side perspective sectional view of the present utility model;

[0022] Figure 5 It is a three-dimensional cross-sectional view of the present utility model.

[0023] In the figure: 1. static mold; 2. working base plate; 3. core pulling and resetting assembly; 31. track plate; 32. T-slot; 33. sliding block; 34. movable base; 35. central push plate; 36. core; 37. movable slot frame; 38. baffle; 39. spring; 310. stabilizing plate; 311. protruding fillet block; 312. protruding block; 4. driving assembly; 41. supporting plate; 42. driving telescopic rod; 43. contact plate; 44. connecting frame. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0025] See also Figure 1-Figure 5 , this utility model provides two technical solutions:

[0026] Embodiment 1, a long-stroke core-pulling and resetting mechanism for driving an injection mold, comprising:

[0027] The static mold 1 has a working base plate 2 fixedly connected to one side of the static mold 1. The surface of the working base plate 2 is provided with a central groove and side grooves for the protruding fillet block 311 and the protruding stop block 312 to pass through.

[0028] The core pulling reset component 3, one side of the core pulling reset component 3 is fixedly connected to the top of the working base plate 2, and the core pulling reset component 3 is used to control the core pulling sequence;

[0029] The driving assembly 4 has one side fixedly connected to the top of the working base plate 2, and the driving assembly 4 is used to directly drive the operation of the related structures. The setting of the core pulling and resetting assembly 3 is used to pass through the space between the central push plate 35 and the movable slot frame 37, and the top of the central push plate 35 is connected to the driving assembly 4. After the driving starts, the central push plate 35 must be driven first, and the central push plate 35 drives the core 36 to move at the same time. Only when the central push plate 35 moves a short distance can it drive the movable slot frame 37 to move, thereby ensuring the order of separation. After the core 36 is pulled out, the molding module of the mold will start to move. By first driving the core 36 away from the molded part, it can be ensured that the core 36 is smoothly separated from the inner cavity of the plastic part to avoid deformation of the plastic part. Through the setting of the protruding rounded block 311 and the protruding stop block 312, even if the movable slot frame 37 moves first due to various interference factors, it will be directly blocked by the protruding stop block 312 to ensure the movement order.

[0030] The second embodiment is mainly different from the first embodiment in that: a large-stroke core-pulling reset mechanism for driving an injection mold, the core-pulling reset component 3 includes a track plate 31 fixedly connected to the middle of the top of the working base plate 2, a T-slot 32 is provided on the surface of the track plate 31, a sliding block 33 is movably connected to the inner wall of the T-slot 32, the top of the sliding block 33 is fixedly connected to a movable base 34, the top of the movable base 34 is movably connected to a movable slot frame 37, the top of the movable base 34 is fixedly connected to a central push plate 35, one side of the central push plate 35 is fixedly connected to a core 36 through a connecting rod, baffles 38 are fixedly connected to both sides of the working base plate 2, the bottom of the baffle 38 is fixedly connected to a spring 39, a limit rod is set inside the spring 39 when it is working, and the bottom end of the spring 39 is fixedly connected to a stabilizing plate 310, the stabilizing plate 310 The middle of the top is fixedly connected with a protruding rounded block 311, and both sides of the top of the stabilizing plate 310 are fixedly connected with protruding stop blocks 312. The tops of the protruding rounded block 311 and the protruding stop blocks 312 pass through the working base plate 2 and extend to the top. The driving assembly 4 includes a support plate 41 fixedly connected to the top of the working base plate 2, and one side of the support plate 41 is fixedly connected to a driving telescopic rod 42. One end of the driving telescopic rod 42 is rotatably connected to a contact plate 43. The surface of the contact plate 43 is movably connected to a connecting frame 44. The bottom of the connecting frame 44 is fixedly connected to one side of the top of the core pulling and resetting assembly 3. By utilizing the setting of the driving assembly 4, the connecting frame 44 is driven by the contact plate 43. When maintaining it, the contact plate 43 can be directly rotated around the driving telescopic rod 42 to separate the contact plate 43 from the connecting frame 44, which is convenient for staff to quickly maintain.

[0031] The left side of the movable trough frame 37 is fixedly connected to the forming module. Figure 2It can be clearly observed that there is a large gap between the central push plate 35 and the movable groove frame 37. During the movement, the driven component 4 first drives the central push plate 35 and the movable base 34, and then pushes the movable groove frame 37. Only when the movable base 34 can push down the protruding rounded corner block 311 of the rounded corner, can it continue to move on the surface of the track plate 31. Even if the movable groove frame 37 moves first, it directly contacts the protruding stop block 312 and cannot continue to push. The thickness of the central push plate 35 is greater than the length of the core 36.

[0032] Meanwhile, the contents not described in detail in this specification belong to the prior art known to those skilled in the art.

[0033] When demoulding begins, the driving telescopic rod 42 on one side of the support plate 41 is retracted, and the connecting frame 44 is driven to move through the contact plate 43, and then the central pushing plate 35 is driven to move. The central pushing plate 35 directly drives the core 36 to be pulled out from the molded part. The core 36 may be responsible for forming structures such as deep holes and inclined holes, separating the core 36 and the inner cavity of the plastic part to prevent the core 36 from being difficult to demould due to adhesion or being too tight with the plastic part. After the central pushing plate 35 moves for a certain distance, the central pushing plate 35 pushes the movable slot frame 37 and the left molding module to move. At the same time, the central pushing plate 35 drives the movable base 34 and the sliding block 33 along As the sliding block 33 moves, when the movable base 34 contacts the protruding rounded block 311, it directly pushes down the protruding rounded block 311, and then pushes the stabilizing plate 310 to move downward. The stabilizing plate 310 drives the protruding block 312 to move downward. At the same time, the spring 39 on one side of the baffle 38 is stretched, and then drives the molding module away from the finished product, ensuring that the molding module can be smoothly separated from the plastic part without interfering with the core 36. When the driving assembly 4 is maintained, the contact plate 43 is rotated around the driving telescopic rod 42, and the contact plate 43 is separated from the connecting frame 44 for quick maintenance. When the device is fully operational, the device is restored.

[0034] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0035] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A long-stroke core-pulling and resetting mechanism for driving an injection mold, characterized in that: include: A static mold (1), one side of which is fixedly connected to a working base plate (2); A core pulling and resetting component (3), one side of which is fixedly connected to the top of the working base plate (2), and the core pulling and resetting component (3) is used to control the core pulling sequence; A drive assembly (4), one side of which is fixedly connected to the top of the working base plate (2), and the drive assembly (4) is used to directly drive the operation of the related structure.

2. A long-stroke core-pulling and resetting mechanism for driving an injection mold according to claim 1, characterized in that: The core-pulling and resetting assembly (3) comprises a track plate (31) fixedly connected to the middle of the top of the working base plate (2); a T-shaped slot (32) is provided on the surface of the track plate (31); a sliding block (33) is movably connected to the inner wall of the T-shaped slot (32); the top of the sliding block (33) is fixedly connected to a movable base (34); and the top of the movable base (34) is movably connected to a movable slot frame (37).

3. A long-stroke core-pulling and resetting mechanism for driving an injection mold according to claim 2, characterized in that: The top of the movable base (34) is fixedly connected to a central push plate (35), and one side of the central push plate (35) is fixedly connected to a core (36) via a connecting rod.

4. The long-stroke core-pulling and resetting mechanism for driving an injection mold according to claim 1, characterized in that: Baffles (38) are fixedly connected to both sides of the working base plate (2), a spring (39) is fixedly connected to the bottom of the baffle (38), a stabilizing plate (310) is fixedly connected to the bottom end of the spring (39), a protruding rounded block (311) is fixedly connected to the middle of the top of the stabilizing plate (310), and protruding block blocks (312) are fixedly connected to both sides of the top of the stabilizing plate (310).

5. The long-stroke core-pulling and resetting mechanism for driving an injection mold according to claim 1, characterized in that: The driving assembly (4) comprises a supporting plate (41) fixedly connected to the top of the working base plate (2), and a driving telescopic rod (42) is fixedly connected to one side of the supporting plate (41).

6. A long-stroke core-pulling and resetting mechanism for driving an injection mold according to claim 5, characterized in that: One end of the driving telescopic rod (42) is rotatably connected to a contact plate (43), and the surface of the contact plate (43) is movably connected to a connection frame (44).

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