Rapid discharging injection mold

Abstract

The utility model belongs to the technical field of molds, and particularly relates to a quick discharging injection mold which comprises a mold main body, the mold body comprises: a top mold comprising an injection port; the bottom die comprises a driving assembly and a mold core; the driving assembly comprises a first driving device; the first driving device is in transmission connection with the mold core; the middle mold is connected with the output end of the second driving device; the middle mold, the top mold and the bottom mold jointly define an injection molding cavity to mold a workpiece; the middle die is fixedly connected with the workpiece; during discharging, the middle mold is fixedly connected with the workpiece, and the first driving device drives the mold core to descend to be separated from the workpiece; after separation, the second driving device drives the middle die to move so as to release fixed connection with the workpiece, and the top die can move before fixed connection between the middle die and the workpiece is released so as to be separated from the workpiece; according to the utility model, the top die, the middle die and the bottom die are matched with one another, so that the workpiece can be quickly discharged without an ejector pin, and the die is simple in structure and suitable for various non-standard workpieces with different shapes.

Description

Technical Field

[0001] The utility model belongs to the technical field of molds, and in particular relates to a fast-discharging injection mold. Background Art

[0002] The mold is a processing tool that forms various shapes of parts by injection molding.

[0003] In the prior art, there is a mold for injection molding threaded parts, which discharges materials through the cooperation of a rotating structure and an ejection structure. For example, a threaded part molding mold for controlling the unchanged starting teeth of the thread disclosed in Chinese utility model patent CN220261868U includes a mold body; a driving assembly is provided at the bottom of the mold body, a gate is provided in the middle of the top surface of the mold body, and a molding assembly is provided inside the mold body; the molding assembly includes a tooth sleeve, which is fixed inside the mold body, and a core is provided inside the mold body. The outer side of the core is sleeved with a bearing 2, and is rotatably installed inside the mold body through the bearing 2; an ejection assembly is provided inside the core, and a molding cavity is left between the inner side of the tooth sleeve and the outer side of the core, and a threaded part body is molded inside the molding cavity; when in use, the molded threaded part body is driven to rotate by the rotation of the core to disengage from the tooth sleeve, and then the product is ejected by moving the ejector upward.

[0004] However, in the above-mentioned utility model patent, the ejection structure ejects the workpiece in the vertical direction, and its reciprocating motion direction is the same as that of the core. The layout accuracy requirements of the two structures are high, and the mold structure is complex. In addition, the ejector structure realizes its ejection by abutting the workpiece, which is not suitable for some non-standard workpieces and has a narrow scope of use. Utility Model Content

[0005] The utility model aims to provide a fast-discharging injection mold, aiming to solve the technical problems in the prior art that the layout accuracy of the mold ejection structure is high, the mold structure is complex, the application range is narrow, and it is not suitable for some non-standard workpieces.

[0006] To achieve the above-mentioned purpose, an embodiment of the utility model provides a fast-discharging injection mold, including a mold body; the mold body includes a top mold, including an injection port; a bottom mold, including a drive assembly and a core; the drive assembly includes a first drive device; the first drive device is transmission-connected to the core; it also includes a middle mold, which is connected to the output end of the second drive device; the middle mold, the top mold, and the bottom mold together form an injection cavity to form a workpiece; the middle mold is fixedly connected to the workpiece; wherein the first drive device is used to drive the core to descend to separate from the workpiece, and the second drive device is used to drive the middle mold to move so that it is released from the workpiece.

[0007] Optionally, the top end of the core extends into the injection molding cavity for molding the tank body; the top end of the core is provided with an external thread, and the external thread is used for injection molding the inner side wall of the tank body to form an internal thread.

[0008] Optionally, the driving assembly includes a transmission member; the transmission member is transmission-connected to the output end of the first driving device and meshingly connected to the core; the bottom mold includes a vertically arranged first connecting groove and a horizontally arranged second connecting groove; the core is arranged in the first connecting groove, and the transmission member is arranged in the second connecting groove; the inner side wall of the first connecting groove and the outer side wall of the core are spirally connected.

[0009] Optionally, the first connecting groove includes a connecting area; the core includes an engaging portion for engaging with the transmission member, and the engaging portion is placed in the connecting area; the connecting area includes a lifting area for facilitating the movement of the engaging portion, a top clamp for abutting against the top of the engaging portion, and a bottom clamp for abutting against the bottom of the engaging portion.

[0010] Optionally, a fixing piece is provided between the first connecting groove and the core; a clamping portion is provided on the outer side of the fixing piece, a clamping groove is provided on the inner side wall of the first connecting groove, and the clamping portion and the clamping groove are adapted to be clamped; the core is connected to the fixing piece by spiral rotation.

[0011] Optionally, the middle mold includes a first mold body and a second mold body; the first mold body and the second mold body are both provided with a fixing part; the second driving device can drive the first mold body and the second mold body to approach each other so that the two fixing parts cooperate with each other to fix the workpiece.

[0012] Optionally, a limiting groove is provided on the fixing portion, and a limiting protrusion is provided on the workpiece, and the limiting groove and the limiting protrusion are matched to limit the horizontal rotation of the workpiece.

[0013] Optionally, the bottom mold includes a positioning seat; the top surface of the positioning seat is provided with a positioning portion, and the positioning portion participates in forming the injection cavity and is used to position the workpiece.

[0014] Optionally, a connecting channel is provided through the top surface of the positioning seat and the bottom surface thereof, and the core passes through the connecting channel and can rise or fall in the connecting channel.

[0015] Optionally, the aperture of the bottom channel opening of the connecting channel tapers toward the aperture of the top channel opening thereof.

[0016] Compared with the prior art, the above one or more technical solutions in the fast-discharging injection mold provided by the embodiment of the utility model have at least one of the following technical effects:

[0017] A middle mold is added between the top mold and the bottom mold, the middle mold participates in forming the injection cavity, and the middle mold is fixedly connected to the workpiece injection-molded in the injection cavity; when discharging, the middle mold remains fixedly connected to the workpiece, and the first driving device drives the core to descend to separate from the workpiece; after separation, the second driving device drives the middle mold to move to release the fixed connection with the workpiece, and the top mold can move to separate from the workpiece before the middle mold is released from the workpiece; the utility model can complete the rapid discharging of the workpiece without using an ejector pin through the mutual cooperation of the top mold, the middle mold and the bottom mold, and the mold structure is simple, which is suitable for non-standard workpieces of various shapes. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0019] Figure 1 It is a structural schematic diagram of the utility model.

[0020] Figure 2 It is a cutaway view of the utility model.

[0021] Figure 3 for Figure 2 Enlarged schematic diagram of circle A in the middle.

[0022] Figure 4 for Figure 2 Enlarged schematic diagram of circle B in the middle.

[0023] Figure 5 This is a schematic diagram of the explosion of the middle mold.

[0024] Figure 6 for Figure 5 Enlarged schematic diagram of circle C in the middle.

[0025] Figure 7 An exploded view of the transmission parts and core at an angle.

[0026] Figure 8 Another exploded view of the transmission parts and core.

[0027] Fig. 9 It is a structural schematic diagram of the workpiece in the utility model.

[0028] Among them, the reference numerals in the figure are:

[0029] 1. Top mold; 2. Middle mold; 3. Bottom mold; 4. Injection cavity; 5. Workpiece;

[0030] 11. Injection port;

[0031] 21. first mold body; 22. second mold body; 23. fixing part; 231. limiting groove;

[0032] 31. driving assembly; 311. first driving device; 312. transmission member; 32. core; 321. external thread; 322. meshing portion; 33. first connecting groove; 331. connecting area; 331a. lifting area; 331b. top clamping platform; 331c. bottom clamping platform; 34. fixing member; 341. clamping portion; 342. clamping groove; 35. second connecting groove; 36. positioning seat; 361. positioning portion; 362. connecting channel;

[0033] 51. Limiting protrusion; 52. Groove body; 521. Internal thread. DETAILED DESCRIPTION

[0034] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the embodiments of the present invention, and should not be construed as limiting the present invention.

[0035] In the description of the embodiments of the present invention, it should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0036] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the embodiments of the present utility model, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined.

[0037] In the embodiments of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it 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 an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present invention can be understood according to specific circumstances.

[0038] In one embodiment of the present invention, a fast-discharging injection mold is provided. Figure 1-Figure 9 , including a mold body; the mold body includes:

[0039] The top mold 1 includes an injection port 11 for injecting the injection molding material;

[0040] The bottom mold 3 includes a driving assembly 31 and a core 32; the core 32 is used to form the workpiece 5; the driving assembly 31 includes a first driving device 311, such as a cylinder; the output end of the first driving device 311 is transmission-connected to the core 32, such as fixedly connected by a connecting piece, so that the first driving device 311 can drive the core 32 to move when it is started.

[0041] Furthermore, it also includes a middle mold 2, which is arranged between the top mold 1 and the bottom mold 3; the middle mold 2 is connected to the output end of the second driving device, and the second driving device can be set as a cylinder to drive the middle mold 2 to move.

[0042] Furthermore, the middle mold 2 , the top mold 1 , and the bottom mold 3 together form an injection cavity 4 to mold the workpiece 5 ; the injection cavity 4 is connected to the injection port 11 , so that the injection material can pass through the injection port 11 into the injection cavity 4 for injection molding.

[0043] Furthermore, the middle mold 2 is fixedly connected to the workpiece 5 .

[0044] When the injection molding of the workpiece 5 is completed, the first driving device 311 is used to drive the core 32 to descend to separate from the workpiece 5 , and the second driving device is used to drive the middle mold 2 to move to release the fixed connection with the workpiece 5 .

[0045] Compared with the prior art, the above one or more technical solutions in the fast-discharging injection mold provided by the embodiment of the utility model have at least one of the following technical effects:

[0046] A middle mold 2 is added between the top mold 1 and the bottom mold 3. The middle mold 2 participates in forming the injection cavity 4, and the middle mold 2 is fixedly connected to the workpiece 5 injection-molded in the injection cavity 4; during discharge, the middle mold 2 remains fixedly connected to the workpiece 5, and the first drive device 311 drives the core 32 to descend to separate from the workpiece 5; after separation, the second drive device drives the middle mold 2 to move to release the fixed connection with the workpiece 5, and the top mold 1 can move to separate from the workpiece 5 before the middle mold 2 is released from the workpiece 5; the utility model can complete the rapid discharge of the workpiece 5 without an ejector through the mutual cooperation of the top mold 1, the middle mold 2, and the bottom mold 3, and the mold structure is simple, which is suitable for non-standard workpieces 5 of various shapes.

[0047] In another embodiment of the present invention, reference Figure 3The top end of the core 32 extends into the injection molding cavity 4 to form a groove body 52 on the workpiece 5, and the outer edge surface of the top end of the core 32 participates in the overall contour of the injection molding workpiece 5, so as to facilitate the injection molding of workpieces 5 with empty grooves inside, such as nuts, connecting pipes, rotating pipes, etc.; the groove body 52 can be set to a groove shape, or it can be set to a through groove shape that penetrates the workpiece 5, and the change in shape depends on the depth of the top end of the core 32 extending into the injection molding cavity 4; the top end of the core 32 is provided with an external thread 321, and the external thread 321 is used to inject the inner wall of the groove body 52 to form an internal thread 521.

[0048] In another embodiment of the present invention, reference Figure 4 , Figure 7 , Figure 8 The driving assembly 31 includes a transmission member 312, which is preferably set in a long strip shape; the transmission member 312 is transmission-connected to the output end of the first driving device 311 and meshed with the core 32; the first driving device 311 is started to drive the transmission member 312 to reciprocate, and the reciprocating motion of the transmission member 312 can drive the core 32 to rise so that its top extends into the injection cavity 4, or descend so that its top exits the injection cavity 4; specifically, the bottom mold 3 includes a vertically arranged first connecting groove 33 and a horizontally arranged second connecting groove 35, and the first connecting groove 33 and the second connecting groove 35 are connected; the core 32 is arranged in the first connecting groove 33, and the transmission member 312 is arranged in the second connecting groove 35, and the core 32 and the transmission member 312 are meshed at the connecting portion between the two connecting grooves; the inner side wall of the first connecting groove 33 and the outer side wall of the core 32 are spirally connected, and when the transmission member 312 performs horizontal reciprocating motion, it can drive the core 32 to spirally rise or spirally descend.

[0049] Further, refer to Figure 4 The first connecting groove 33 includes a connecting area 331; the core 32 includes a meshing portion 322 for meshing and connecting with the transmission member 312, and the meshing portion 322 is placed in the connecting area 331; the connecting area 331 includes a lifting area 331a for facilitating the rotation of the meshing portion 322, a top clamping platform 331b for abutting against the top of the meshing portion 322, and a bottom clamping platform 331c for abutting against the bottom of the meshing portion 322; wherein the height of the lifting area 331a is greater than the height of the meshing portion 322, so that the meshing portion 322 can spirally rise or spirally descend; the top clamping platform 331b and the bottom clamping platform 331c are used to limit the rising and falling heights of the meshing portion 322, so that the height of the core 32 rising or falling is appropriate; the meshing portion 322 can be set as an integrally formed structure with the core 32, or can be set as a fixed connection structure after separate molding, and the specific setting can be determined as needed.

[0050] Further, refer to Figure 4 and Figure 7A fixing piece 34 is sandwiched between the first connecting groove 33 and the core 32; a clamping portion 341 is provided on the outer side of the fixing piece 34, and a clamping groove 342 is provided on the inner side wall of the first connecting groove 33. The clamping portion 341 and the clamping groove 342 are adapted to be clamped, so that the fixing piece 34 is fixedly connected to the first connecting groove 33; the core 32 is spirally connected to the fixing piece 34, so that the core 32 can spirally rise or spirally descend. At this time, the fixing piece 34 will not rotate with the core 32 under the clamping of the clamping groove 342.

[0051] In another embodiment of the present invention, reference Figure 5 , Figure 6 , Fig. 9 The middle mold 2 includes a first mold body 21 and a second mold body 22; the first mold body 21 and the second mold body 22 can be driven by the second driving device to approach each other to participate in forming the injection cavity 4, or move away from each other to facilitate the discharge of the workpiece 5; the sides of the first mold body 21 and the second mold body 22 that are close to each other are provided with a fixing part 23, and the outer wall of the workpiece 5 is provided with a fixing position adapted to the fixing part 23; the second driving device can drive the first mold body 21 and the second mold body 22 to approach each other so that the two fixing parts 23 cooperate with each other and connect with the fixing position to fix the workpiece 5; specifically, the fixing position participates in forming the injection cavity 4; the fixing part 23 can be set to a flange shape to inject the fixing position into a concave shape; when the core 32 descends to separate from the workpiece 5, the fixing part 23 is adapted to be plugged in with the fixing position so that the workpiece 5 is not easy to fall off; when the first mold body 21 and the second mold body 22 are separated from each other, the two fixing parts 23 move away from each other to release the plugging with the fixed position to facilitate the discharge of the workpiece 5.

[0052] Further, refer to Figure 6 and Fig. 9 A limiting groove 231 is provided on the fixing portion 23, and a limiting protrusion 51 is provided on the workpiece 5. The limiting groove 231 and the limiting protrusion 51 are adapted to limit the horizontal rotation of the workpiece 5; when the top spiral of the core 32 descends, the workpiece 5 will not descend together due to the limitation of the limiting groove 231, so as to facilitate the discharge of the workpiece 5.

[0053] In another embodiment of the present invention, reference Figure 3 , Figure 7 , Figure 8 The bottom mold 3 includes a positioning seat 36 ; a positioning portion 361 is provided on the top surface of the positioning seat 36 , and the positioning portion 361 is configured as a groove shape. The positioning portion 361 participates in enclosing the injection cavity 4 and is used to position the workpiece 5 .

[0054] Furthermore, a connecting passage 362 is formed from the top surface to the bottom surface of the positioning seat 36 , and the core 32 passes through the connecting passage 362 and can rise or fall in the connecting passage 362 .

[0055] Furthermore, the aperture of the connecting channel 362 gradually decreases from its bottom channel opening to its top channel opening, so that the connecting channel 362 forms a conical shape, and the top inner side wall of the connecting channel 362 can be used to limit the rising height of the core 32.

[0056] The rest of this embodiment is the same as the first embodiment. The features not explained in this embodiment are all based on the explanations in the first embodiment and will not be described in detail here.

[0057] The above content is a further detailed description of the utility model in combination with specific preferred implementation methods, and it cannot be determined that the specific implementation of the utility model is limited to these descriptions. For ordinary technicians in the technical field to which the utility model belongs, without departing from the concept of the utility model, its architecture can be flexible and can derive a series of products. Just making a few simple deductions or substitutions should be regarded as belonging to the patent protection scope of the utility model determined by the submitted claims.

Claims

1. A fast-discharging injection mold, characterized in that: The mold body comprises: A top mold (1) including an injection port (11); The bottom mold (3) comprises a driving assembly (31) and a core (32); the driving assembly (31) comprises a first driving device (311); the first driving device (311) is drivingly connected to the core (32); and further comprises: The middle mold (2) is connected to the output end of the second driving device; the middle mold (2), the top mold (1), and the bottom mold (3) together form an injection cavity (4) to mold a workpiece (5); the middle mold (2) is fixedly connected to the workpiece (5); wherein, The first driving device (311) is used to drive the core (32) to descend so as to separate from the workpiece (5), and the second driving device is used to drive the middle mold (2) to move so as to release the fixed connection with the workpiece (5).

2. The rapid discharge injection mold according to claim 1, characterized in that: The top end of the core (32) extends into the injection molding cavity (4) for molding the groove body (52); the top end of the core (32) is provided with an external thread (321), and the external thread (321) is used to form an internal thread (521) for injection molding the inner side wall of the groove body (52).

3. The rapid discharge injection mold according to claim 1 or 2, characterized in that: The driving assembly (31) comprises a transmission member (312); the transmission member (312) is drivingly connected to the output end of the first driving device (311) and meshingly connected to the core (32); the bottom mold (3) comprises a first connecting groove (33) arranged vertically and a second connecting groove (35) arranged horizontally; the core (32) is arranged in the first connecting groove (33), and the transmission member (312) is arranged in the second connecting groove (35); the inner side wall of the first connecting groove (33) and the outer side wall of the core (32) are spirally connected.

4. The rapid discharge injection mold according to claim 3, characterized in that: The first connecting groove (33) includes a connecting area (331); the core (32) includes an engaging portion (322) for engaging with the transmission member (312), and the engaging portion (322) is placed in the connecting area (331); the connecting area (331) includes a lifting area (331a) for facilitating the movement of the engaging portion (322), a top clamping platform (331b) for abutting against the top of the engaging portion (322), and a bottom clamping platform (331c) for abutting against the bottom of the engaging portion (322).

5. The rapid discharge injection mold according to claim 3, characterized in that: A fixing member (34) is provided between the first connecting groove (33) and the core (32); a clamping portion (341) is provided on the outer side of the fixing member (34); a clamping groove (342) is provided on the inner side wall of the first connecting groove (33); the clamping portion (341) and the clamping groove (342) are adapted to be clamped; and the core (32) is connected to the fixing member (34) by spiral rotation.

6. The rapid discharge injection mold according to claim 1 or 2, characterized in that: The middle mold (2) comprises a first mold body (21) and a second mold body (22); the first mold body (21) and the second mold body (22) are both provided with a fixing portion (23); the second driving device can drive the first mold body (21) and the second mold body (22) to approach each other so that the two fixing portions (23) cooperate with each other to fix the workpiece (5).

7. The rapid discharge injection mold according to claim 6, characterized in that: The fixing portion (23) is provided with a limiting groove (231), the workpiece (5) is provided with a limiting protrusion (51), and the limiting groove (231) is matched with the limiting protrusion (51) to limit the horizontal rotation of the workpiece (5).

8. The rapid discharge injection mold according to claim 1 or 2, characterized in that: The bottom mold (3) comprises a positioning seat (36); a positioning portion (361) is provided on the top surface of the positioning seat (36); the positioning portion (361) participates in forming the injection cavity (4) and is used to position the workpiece (5).

9. The rapid discharge injection mold according to claim 8, characterized in that: A connecting channel (362) is provided from the top surface of the positioning seat (36) to the bottom surface thereof, and the core (32) passes through the connecting channel (362) and can rise or fall in the connecting channel (362).

10. The rapid discharge injection mold according to claim 9, characterized in that: The aperture of the connecting channel (362) gradually decreases from its bottom channel opening to its top channel opening.

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