Injection mold with exhaust needle convenient to disassemble and clean

Abstract

The utility model relates to the technical field of injection molds, in particular to an injection mold with exhaust needles convenient to disassemble and clean, which comprises an upper mold body, a lower mold body and an exhaust device, the exhaust device comprises the exhaust needles and a locking piece, the upper mold body is provided with exhaust holes communicated with the bottom surface and the surface of the upper mold body, one end of each exhaust hole is communicated with a cavity, and the other end of each exhaust hole is communicated with the locking piece. The exhaust needle is slidably connected with the exhaust hole, the locking piece is installed in the upper die body and movably connected with the upper die body, the exhaust needle is provided with a first connecting part, the locking piece is provided with a second connecting part, the first connecting part and the second connecting part are detachably connected, and when the first connecting part and the second connecting part are connected, the exhaust needle is in a locked state. According to the utility model, the exhaust needle can slide in the exhaust hole only by moving the locking piece to enable the first connecting part and the second connecting part to be disconnected, so that the exhaust needle can be easily detached from the exhaust hole, and the phenomenon that the exhaust needle is blocked to cause air holes in an injection molding piece can be avoided by regularly detaching and cleaning the exhaust needle.

Description

TECHNICAL FIELD

[0001] The utility model relates to injection mold technical field more specifically, relate to a kind of injection mold of easy to disassemble and clean exhaust needle. BACKGROUND

[0002] Injection mold is the process equipment widely used in industrial production, especially occupies important position in plastics processing field, it is mainly used for the forming processing of thermoplastic plastics such as ABS, PP, PC etc., by injection molding machine, melt plastics are injected into mold cavity, and the required shape plastic product is obtained after cooling solidification, injection mold has multiple types, such as two-plate mold, three-plate mold, hot runner mold etc., each type has its specific structure and applicable scenario, the characteristics of injection mold include high precision, high surface quality, long service life and complex three-dimensional surface machining etc., the manufacture of mold needs highly specialized technology and equipment to ensure that the dimensional accuracy and surface quality of product meet the requirements, in addition, injection mold is also widely used in automobile, electronic, household appliance, medical instrument etc.

[0003] Injection mold is used for the processing of thermoplastic parts, injection mold needs to be exhausted when being used, the existing injection mold is mostly provided with exhaust hole or exhaust needle, but dust and debris are easy to enter the exhaust hole or exhaust needle of injection mold to cause exhaust hole blockage problem after long use, thereby causing blowhole phenomenon in injection process, so exhaust hole or exhaust needle needs to be cleaned regularly, however, the existing exhaust needle is mostly opened on injection mold, and it is difficult to clean. UTILITY MODEL CONTENT

[0004] The utility model aims at overcoming the problem that the exhaust needle of prior art injection mold is difficult to clean, provides a kind of injection mold of easy to disassemble and clean exhaust needle, so that the exhaust needle of injection mold can be disassembled and cleaned, to prevent blockage.

[0005] To solve the above technical problems, the utility model adopts the technical scheme that:

[0006] The utility model provides an injection mold of convenient dismounting and cleaning exhaust needle, including upper mould body, lower mould body and exhaust device, the upper mould body and lower mould body are surrounded in the cavity in the closed die state inside, the exhaust device includes exhaust needle and locking piece, the upper mould body is provided with the exhaust hole which communicates its bottom surface and surface, one end of exhaust hole communicates with the cavity, the exhaust needle is slidably connected with the exhaust hole, the locking piece is installed in the upper mould body and is movably connected with the upper mould body, the exhaust needle is equipped with first connecting part, the locking piece is equipped with the second connecting part which corresponds with the first connecting part, the first connecting part and the second connecting part are detachably connected, when the first connecting part and the second connecting part are connected, the exhaust needle is in the locking state.

[0007] The utility model discloses an injection mold of convenient dismounting and cleaning exhaust needle, when the upper mould body and lower mould body are in the closed die state, the cavity is surrounded inside, the hot melt plastic enters the cavity through the feed port of injection mold, and the air in the cavity is extruded, so that the air flows out from the exhaust needle installed in the exhaust hole, when the exhaust needle needs to be dismounted and cleaned, since the locking piece is movably connected with the upper mould body, it is only needed to move the locking piece, so that the first connecting part and the second connecting part lose the connection, the exhaust needle is unlocked, and can slide in the exhaust hole, so that the exhaust needle can be easily taken out of the exhaust hole, the dismounting of the exhaust needle is realized, and in the same way, when the exhaust needle needs to be installed, the exhaust needle is inserted into the exhaust hole, then the locking piece is moved, so that the first connecting part and the second connecting part are connected, and the exhaust needle is locked, by regularly dismounting and cleaning the exhaust needle, the exhaust needle can be prevented from being blocked, so that the injection molding part can be prevented from being generated air hole.

[0008] Further, the outer surface of the upper mould body is provided with a sliding groove, the locking piece is slidably connected with the sliding groove, the first connecting part is a jack, the second connecting part is a plug column, the plug column is slidably connected with the jack, and the sliding direction of the plug column in the jack is consistent with the sliding direction of the locking piece in the sliding groove. The cooperation of the jack and the plug column can abut against the inner wall of the jack to limit the displacement of the exhaust needle, the plug column can be installed into the jack by sliding the locking piece in the sliding groove, the locking of the locking piece to the exhaust needle is realized, the movement track of the locking piece is limited by the sliding connection, and the dismounting is faster.

[0009] Further, when the exhaust needle is in the locking state, one end of the locking piece extends out of the opening of the sliding groove, and the end is provided with an antiskid pad. The end of the locking piece extends out of the opening of the sliding groove, the locking piece can be pressed and moved outside the upper mould body, so that the installation or dismounting of the exhaust needle is realized, and the antiskid pad can increase the friction and reduce the slippage when being pressed.

[0010] Further, the exhaust device further comprises a first elastic member, two ends of the first elastic member respectively abut against an inner wall of the sliding groove and one end of the locking member, and the first elastic member provides an elastic force to the locking member in a direction consistent with the sliding direction of the locking member in the upper die body. The first elastic member generates deformation to provide an elastic force to the locking member, so that the insertion post is installed in the insertion hole and the locking member can abut against the exhaust needle, so that the locking member is not easy to slide after the locking member is loosened, and the exhaust needle is prevented from falling off due to the sliding of the locking member.

[0011] Further, the inner wall of the sliding groove is fixed with a limiting rod, the locking member is provided with a limiting groove, the limiting rod and the limiting groove are in sliding connection, and the first elastic member is installed outside the limiting rod. The limiting rod makes the locking member more stable and avoids the movement of the locking member from deviating.

[0012] Further, the exhaust device further comprises a first elastic member, two ends of the first elastic member respectively abut against an inner wall of the sliding groove and one end of the locking member, and the first elastic member provides an elastic force to the locking member in a direction consistent with the sliding direction of the locking member in the upper die body. The first elastic member generates deformation to provide an elastic force to the locking member, so that the insertion post is installed in the insertion hole and the locking member can abut against the exhaust needle, so that the locking member is not easy to slide after the locking member is loosened, and the exhaust needle is prevented from falling off due to the sliding of the locking member.

[0013] Further, the exhaust device further comprises a first elastic member, two ends of the first elastic member respectively abut against an inner wall of the sliding groove and one end of the locking member, and the first elastic member provides an elastic force to the locking member in a direction consistent with the sliding direction of the locking member in the upper die body. The first elastic member generates deformation to provide an elastic force to the locking member, so that the insertion post is installed in the insertion hole and the locking member can abut against the exhaust needle, so that the locking member is not easy to slide after the locking member is loosened, and the exhaust needle is prevented from falling off due to the sliding of the locking member.

[0014] Further, the transmission assembly comprises a winding wheel, a winding rope fixed at one end of the winding wheel and a first sliding block, the abutting member comprises a second sliding block, the driving member is a rotary motor, the output shaft of the rotary motor drives the winding wheel to rotate, the other end of the winding rope is fixedly connected with the first sliding block, the first sliding block is slidably connected with the horizontal plate and the sliding direction is perpendicular to the rotation axis of the winding wheel, the first sliding block can abut against and push the second sliding block to move, and the sliding direction of the first sliding block is perpendicular to the sliding direction of the second sliding block. The cooperation of the winding wheel and the winding rope converts the rotary motion of the rotary motor into linear motion and drives the first sliding block to slide on the horizontal plate, the bottom end of the second sliding block is lower than the top end of the first sliding block in the vertical direction, and the first sliding block can abut against the second sliding block and push the second sliding block to move when passing through the second sliding block, so that the transmission direction is changed.

[0015] Further, the horizontal plate further comprises a plurality of slide rods and not less than two positioning plates fixed at the top surface of the horizontal plate, both ends of each slide rod are fixed between two positioning plates, the first sliding block is provided with a sliding sleeve, and the sliding sleeve is slidably connected with the slide rod. The sliding sleeve and the slide rod are slidably connected, and the friction is small, so that the first sliding block is more easily driven.

[0016] Further, the abutting device further comprises a second elastic member, and both ends of the second elastic member are fixedly connected to one side of the positioning plate and one end of the sliding sleeve. When the winding wheel is winding, the first sliding block slides on the slide rod, and the second elastic member is deformed, when the winding wheel stops winding, the first sliding block is reset under the action of the elastic force of the second elastic member, manual reset is not needed, and convenience is better.

[0017] Compared with the prior art, the utility model has the advantages that:

[0018] 1. The exhaust hole and the locking member are arranged, only the locking member needs to be moved, the first connecting part and the second connecting part are disconnected, the exhaust needle is unlocked, can slide in the exhaust hole, so that the exhaust needle can be easily taken out of the exhaust hole, the exhaust needle is conveniently disassembled, the exhaust needle is disassembled and cleaned regularly, the exhaust needle is prevented from being blocked to cause the gas hole phenomenon of the injection molding part;

[0019] 2. The first elastic member is arranged, the plug is installed in the plug hole, and the locking member can abut against the exhaust needle, so that the locking member is not easy to slide after being unlocked, and the exhaust needle is prevented from falling off due to the sliding of the locking member;

[0020] 3. The abutting device can abut against the solidified part and apply a pushing force to the solidified part, so that external air enters, the internal and external pressure is balanced, and the part is conveniently demolded. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 It is a structure schematic view of injection mold convenient to disassemble and clean exhaust needle;

[0022] Figure 2 It is Figure 1 The partial enlarged view of A position of

[0023] Figure 3 It is a structure schematic view of exhaust device;

[0024] Figure 4 It is a structure schematic view of abutting device;

[0025] Figure 5 It is Figure 4 The partial enlarged view of B position of

[0026] In the drawings: 100, upper mold body;110, exhaust hole;120, chute;130, limiting rod;200, lower mold body;300, exhaust device;310, exhaust needle;311, first connecting part;312, insertion hole;320, locking piece;321, second connecting part;322, insertion column;323, non-slip pad;324, limiting groove;330, first elastic piece;400, bottom plate;500, support plate;600, abutting device;610, cross plate;611, positioning plate;612, sliding rod;620, driving piece;630, transmission assembly;631, first transmission wheel;632, second transmission wheel;633, transmission belt;634, winding wheel;635, winding rope;636, first sliding block;637, sliding sleeve;640, abutting piece;641, second sliding block;650, second elastic piece. DETAILED DESCRIPTION

[0027] The utility model will be further explained in combination with specific implementation. Among them, the drawings are only for example explanation, show only is schematic view, and cannot be understood as the limitation to the patent of this utility model;In order to better explain the embodiment of the utility model, the drawings of some components will be omitted, enlarged or reduced, and the size of actual product is not represented;For those skilled in the art, it is understandable that some well-known structures in the drawings and their description can be omitted.

[0028] The same or similar reference signs in the drawings of the embodiments of the present utility model correspond to the same or similar components; in the description of the present utility model, it is understood that if the orientations or position relationships indicated by the terms "upper", "lower", "left", "right" and the like are based on the orientations or position relationships shown in the drawings, they are only for the convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore the terms describing the position relationships in the drawings are only used for exemplary illustration, and cannot be understood as a limitation on the present patent, for those skilled in the art, the specific meanings of the above terms can be understood according to the specific circumstances.

[0029] Embodiment one

[0030] The present embodiment is a first embodiment of an injection mold facilitating the disassembly and cleaning of exhaust needles, as shown in Figures 1-3 Fig. 1, comprising an upper mold body 100, a lower mold body 200 and a plurality of exhaust devices 300, the upper mold body 100 and the lower mold body 200 form a mold cavity inside in the clamped state, the exhaust device 300 comprises an exhaust needle 310 and a locking piece 320, an injection mold is provided with two sizes of exhaust needles 310, the exhaust speed of different sizes of exhaust needles 310 is different, the upper mold body 100 is provided with a plurality of exhaust holes 110 communicating with the bottom surface and the top surface thereof, one end of the exhaust hole 110 communicates with the mold cavity, the exhaust needle 310 is in sliding connection with the exhaust hole 110, a plurality of sliding grooves 120 are formed in the side surface of the upper mold body 100, the locking piece 320 is in sliding connection with the sliding groove 120, the exhaust needle 310 is provided with a first connecting part 311, the locking piece 320 is provided with a second connecting part 321 corresponding to the first connecting part 311, in this embodiment, the first connecting part 311 is a jack 312, the second connecting part 321 is a plug column 322, the plug column 322 is in sliding connection with the jack 312, the sliding direction of the plug column 322 in the jack 312 is consistent with the sliding direction of the locking piece 320 in the sliding groove 120, when the plug column 322 is located inside the jack 312, the exhaust needle 310 is in the locked state. In addition, the sliding groove 120 can also be formed at the top surface of the upper mold body 100, in this case, the exhaust needle 310 is fixed on the side surface of the upper mold body 100.

[0031] The working principle of the present embodiment is as follows:

[0032] When the upper mold body 100 and the lower mold body 200 are in the closed mold state, the inside is surrounded by a cavity, and the hot melt plastic enters the cavity through the feed port of the injection mold, and extrudes the air in the cavity, so that the air flows out from the exhaust needle 310 installed in the exhaust hole 110. When it is necessary to disassemble the exhaust needle 310 for cleaning, since the locking member 320 is movably connected with the upper mold body 100, it is only necessary to move the locking member 320 so that the insertion column 322 is away from the insertion hole 312, and the exhaust needle 310 is unlocked and can slide in the exhaust hole 110, so that the exhaust needle 310 can be easily taken out of the exhaust hole 110 by sliding downward, thereby achieving the disassembly of the exhaust needle 310. Similarly, when it is necessary to install the exhaust needle 310, the exhaust needle 310 is slid upward into the exhaust hole 110, and then the locking member 320 is moved so that the insertion column 322 is installed into the insertion hole 312, and the insertion column 322 will provide an upward supporting force to the locking member 320 to lock the exhaust needle 310. By periodically disassembling and cleaning the exhaust needle 310, the exhaust needle 310 can be prevented from being blocked to cause the injection molded part to have air holes.

[0033] Another embodiment of the first connecting part 311 and the second connecting part 321 is provided herein, in which the first connecting part 311 is a magnet, and the second connecting part 321 is a magnet opposite to the first connecting part 311 in magnetic properties, and the first connecting part 311 and the second connecting part 321 are fixed by the magnetic attraction, thereby locking the exhaust needle 310 in the exhaust hole 110.

[0034] In addition, the first connecting part 311 is the insertion column 322, and the second connecting part 321 is the insertion hole 312, which can also achieve almost the same effect as the above-mentioned embodiment.

[0035] In addition, the locking member 320 and the upper mold body 100 can also be rotatably connected, and the insertion column 322 is installed in the insertion hole 312 by rotating the locking member 320, thereby locking the exhaust needle 310.

[0036] Embodiment Two

[0037] This embodiment is a second embodiment of the injection mold with the exhaust needle which is convenient to disassemble and clean, and is similar to the first embodiment, except that Figure 3As shown, when the exhaust needle 310 is in the locking state, one end of the locking piece 320 extends out of the opening of the sliding groove 120, and the end is provided with an anti-skid pad 323. The inner wall of the sliding groove 120 is fixed with three limiting rods 130. The locking piece 320 is provided with three limiting grooves 324 corresponding to the limiting rods 130. The limiting rods 130 and the limiting grooves 324 are in sliding connection. The exhaust device 300 further comprises a first elastic piece 330. In this embodiment, the first elastic piece 330 is a spring. The first elastic piece 330 is sleeved outside the limiting rod 130. The two ends of the first elastic piece 330 are respectively in abutment with the inner wall of the sliding groove 120 and one end of the locking piece 320. The elastic force provided by the first elastic piece 330 to the locking piece 320 is in the same direction as the sliding direction of the locking piece 320 in the lower die body 200.

[0038] The working principle of the present embodiment is as follows:

[0039] The one end of the locking piece 320 extends out of the opening of the sliding groove 120. The locking piece 320 can be pressed outside the upper die body 100 to move, so as to realize the installation or disassembly of the exhaust needle 310. The anti-skid pad 323 can increase the friction and reduce the slippage when being pressed. The deformation of the first elastic piece 330 can provide an elastic force to the locking piece 320, so that the plug post 322 is installed in the plug hole 312, and the locking piece 320 can resist the exhaust needle 310. After the locking piece 320 is loosened, the locking piece 320 is not easy to slide, so as to avoid the exhaust needle 310 from falling off due to the sliding of the locking piece 320. The limiting rod 130 can make the locking piece 320 more stable, and avoid the movement of the locking piece 320 from deviating.

[0040] Embodiment three

[0041] The present embodiment is a third embodiment of an injection mold with an exhaust needle convenient to disassemble and clean. The present embodiment is similar to the first embodiment and the second embodiment, except that, as shown in FIG. 6, the locking piece 320 is provided with a limiting rod 130, and the sliding groove 120 is provided with a limiting groove 324 corresponding to the limiting rod 130. The limiting rod 130 and the limiting groove 324 are in sliding connection. The limiting rod 130 is provided with a first elastic piece 330. In this embodiment, the first elastic piece 330 is a spring. The first elastic piece 330 is sleeved outside the limiting rod 130. The two ends of the first elastic piece 330 are respectively in abutment with the inner wall of the sliding groove 120 and one end of the locking piece 320. The elastic force provided by the first elastic piece 330 to the locking piece 320 is in the same direction as the sliding direction of the locking piece 320 in the lower die body 200. Figure 1 、 Figure 4 and Figure 5As shown, the device further comprises a bottom plate 400, two support plates 500 fixed between the lower mold body 200 and the bottom plate 400, and an abutting device 600 installed between the bottom plate 400 and the lower mold body 200, the abutting device 600 being fixed to the top of the bottom plate 400 and located between the two support plates 500, the abutting device 600 comprising a horizontal plate 610, a driving member 620, a transmission assembly 630, and an abutting member 640, in this embodiment, the driving member 620 is a rotary motor, the driving member 620 being installed at the top surface of the horizontal plate 610, the transmission assembly 630 comprising a first transmission wheel 631, a second transmission wheel 632, a transmission belt 633, a winding wheel 634, a winding rope 635 fixed to the winding wheel 634, and two trapezoidal first sliding blocks 636, the output shaft of the driving member 620 being fixedly connected with the first transmission wheel 631, the second transmission wheel 632 being fixedly connected with the winding wheel 634, the transmission belt 633 being tightly sleeved on the first transmission wheel 631 and the second transmission wheel 632, the two ends of the winding rope 635 being fixedly connected with the two ends of the two first sliding blocks 636 respectively, the abutting member 640 comprising two trapezoidal second sliding blocks 641, the bottom surface of the lower mold body 200 being provided with sliding holes communicated with the mold cavity, one end of the second sliding block 641 extending into the mold cavity when the part is demolded, the first sliding block 636 being slidably connected with the horizontal plate 610 and the sliding direction being perpendicular to the rotation axis of the winding wheel 634, the sliding direction of the first sliding block 636 being perpendicular to the sliding direction of the second sliding block 641, the trapezoidal faces of the first sliding block 636 and the second sliding block 641 abutting each other.

[0042] The working principle of this embodiment is as follows:

[0043] The output shaft of the driving member 620 rotates to drive the first transmission wheel 631 to rotate, the second transmission wheel 632 is driven to rotate through the transmission belt 633, so as to drive the winding wheel 634 to rotate, the winding wheel 634 rotating will make the winding rope 635 wind around the winding wheel 634, so that the first sliding block 636 fixedly connected with the winding rope 635 slides on the horizontal plate 610, when the first sliding block 636 passes through the second sliding block 641, the inclined face of the first sliding block 636 abuts against the inclined face of the second sliding block 641, since the relative sliding between the trapezoidal faces occurs, the first sliding block 636 continues to move to push the second sliding block 641 to slide upward, when one end of the second sliding block 641 abuts against the injection molded part, a force pushing the injection molded part to demold is exerted on the injection molded part, so that the internal and external air pressures are balanced, and the injection molded part is pushed out.

[0044] In this embodiment, the top of the first slider 636 is provided with an arc-shaped protrusion, and the bottom of the second slider 641 is also provided with an arc-shaped protrusion. When the first slider 636 passes the second slider 641, the arc-shaped protrusion of the first slider 636 will push against the arc-shaped protrusion of the second slider 641 and push the second slider 641 to slide in the sliding hole.

[0045] Embodiment Four

[0046] In this embodiment, the top of the first slider 636 is provided with an arc-shaped protrusion, and the bottom of the second slider 641 is also provided with an arc-shaped protrusion. When the first slider 636 passes the second slider 641, the arc-shaped protrusion of the first slider 636 will push against the arc-shaped protrusion of the second slider 641 and push the second slider 641 to slide in the sliding hole. Figure 4 As shown in FIG. 6, the horizontal plate 610 further includes four sliding rods 612 and eight positioning plates 611 fixed on the top surface of the horizontal plate 610. Each sliding rod 612 is fixed between two positioning plates 611 at both ends. Each first slider 636 is provided with two sliding sleeves 637 arranged in parallel. Each sliding sleeve 637 is in sliding connection with each sliding rod 612. The resistance device 600 further includes eight second elastic members 650. In this embodiment, the second elastic member 650 is a compression spring. The two ends of the second elastic member 650 are fixedly connected to one side of the positioning plate 611 and one end of the sliding sleeve 637, respectively. The second elastic member 650 is closer to the winding wheel 634 relative to the first slider 636. In addition, the second elastic member 650 can also be a tension spring. In this case, the second elastic member 650 is farther away from the winding wheel 634 relative to the first slider 636.

[0047] The working principle of this embodiment is as follows:

[0048] The sliding sleeve 637 is in sliding connection with the sliding rod 612, and the friction is small, so it is easier to drive. When the winding wheel 634 is winding, the first slider 636 slides on the sliding rod 612, and the second elastic member 650 deforms. When the winding wheel 634 stops winding, the first slider 636 will reset under the elastic force of the second elastic member 650, without manual reset, which is more convenient.

[0049] In this embodiment, the sliding sleeve 637 and the sliding rod 612 are not included. Four trapezoidal grooves are formed on the top of the horizontal plate 610. The bottom end of the first slider 636 is in sliding connection with the trapezoidal groove.

[0050] In the specific content of the above specific embodiments, any combination of technical features can be combined without contradiction. In order to make the description simple, not all possible combinations of the above technical features are described. However, as long as the combination of these technical features does not exist contradiction, it should be considered as the scope of the description.

[0051] Obviously, the above embodiments of the present application are merely examples for clearly illustrating the present application, and are not intended to limit the implementation modes of the present application. For those skilled in the art, other different forms of changes or variations can be made on the basis of the above description. Here, it is not necessary and also impossible to exhaust all the implementation modes. Any modification, equivalent replacement and improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application claims.

Claims

1. An injection mold facilitating dismounting and cleaning of exhaust pins, comprising an upper mold body (100) and a lower mold body (200), the upper mold body (100) and the lower mold body (200) enclosing a mold cavity in a closed state, characterized in that, The exhaust device (300) comprises an exhaust needle (310) and a locking piece (320), the upper die body (100) is provided with an exhaust hole (110) communicating with the bottom surface and the surface thereof, one end of the exhaust hole (110) communicates with the cavity, the exhaust needle (310) is in sliding connection with the exhaust hole (110), the locking piece (320) is installed in the upper die body (100) and is in movable connection with the upper die body (100), the exhaust needle (310) is provided with a first connecting part (311), the locking piece (320) is provided with a second connecting part (321) corresponding to the first connecting part (311), the first connecting part (311) and the second connecting part (321) are detachably connected, and the exhaust needle (310) is in a locked state when the first connecting part (311) and the second connecting part (321) are connected.

2. The injection mold of claim 1, wherein, The outer surface of the upper die body (100) is provided with a sliding groove (120), the locking piece (320) is in sliding connection with the sliding groove (120), the first connecting part (311) is a jack (312), the second connecting part (321) is a plug column (322), the plug column (322) is in sliding connection with the jack (312), and the sliding direction of the plug column (322) in the jack (312) is consistent with the sliding direction of the locking piece (320) in the sliding groove (120).

3. The injection mold of claim 2, wherein, When the exhaust needle (310) is in the locked state, one end of the locking piece (320) protrudes out of the opening of the sliding groove (120), and the end is provided with an antiskid pad (323).

4. The injection mold of claim 2, wherein, The exhaust device (300) further comprises a first elastic piece (330), two ends of the first elastic piece (330) are respectively in abutment with the inner wall of the sliding groove (120) and one end of the locking piece (320), and the elastic force provided by the first elastic piece (330) on the locking piece (320) is consistent with the sliding direction of the locking piece (320) in the upper die body (100).

5. The injection mold of claim 4, wherein, The inner wall of the sliding groove (120) is fixed with a limiting rod (130), the locking piece (320) is provided with a limiting groove (324), the limiting rod (130) is in sliding connection with the limiting groove (324), and the first elastic piece (330) is installed outside the limiting rod (130).

6. The injection mold of claim 1, wherein, The abutting device (600) is installed at the bottom of the lower die body (200), and the abutting device (600) can abut against the part to be demolded and push the part to be demolded.

7. The injection mold of claim 6, wherein, The abutting device (600) comprises a horizontal plate (610), a driving member (620), a transmission assembly (630) and an abutting member (640), the driving member (620) is installed at the top surface of the horizontal plate (610), the transmission end of the abutting member (640) is in transmission connection with the driving member (620) through the transmission assembly (630), the bottom surface of the lower mold body (200) is provided with a sliding hole communicated with the cavity, and the abutting member (640) is in sliding connection with the sliding hole.

8. The injection mold of claim 7, wherein, The transmission assembly (630) comprises a winding wheel (634), a winding rope (635) with one end fixed on the winding wheel (634) and a first sliding block (636), the abutting member (640) comprises a second sliding block (641), the output shaft of the driving member (620) drives the rotation of the winding wheel (634), the first sliding block (636) is in sliding connection with the horizontal plate (610) and the sliding direction is perpendicular to the rotation axis of the winding wheel (634), the other end of the winding rope (635) is fixedly connected with the first sliding block (636), the first sliding block (636) can abut against and push the movement of the second sliding block (641), and the sliding direction of the first sliding block (636) is perpendicular to the sliding direction of the second sliding block (641).

9. The injection mold of claim 8, wherein, The horizontal plate (610) further comprises a plurality of slide rods (612) and not less than two positioning plates (611) fixed at the top surface of the horizontal plate (610), both ends of each slide rod (612) are fixed between two positioning plates (611) respectively, and the first sliding block (636) is provided with a sliding sleeve (637), and the sliding sleeve (637) is in sliding connection with the slide rod (612).

10. The injection mold of claim 9, wherein, Further comprising a second elastic member (650), and both ends of the second elastic member (650) are fixedly connected with one side of the positioning plate (611) and one end of the sliding sleeve (637) respectively.

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