Anti-collision mechanism of injection mold and injection mold

Abstract

The present invention discloses an anti-collision mechanism of an injection mold and an injection mold. The injection mold includes an ejector plate supporting a rear mold body. The anti-collision mechanism includes a support seat, a transmission part and a linkage part. The support seat can support the ejector plate. The transmission part is used to connect with the front mold to move along the mold closing direction with the front mold. When the transmission part moves along the mold closing direction, it can drive the linkage part to move. The linkage part drives the support seat to move. When the front mold moves to a predetermined position along the mold closing direction, the support seat moves to withdraw from the ejector plate. In the present invention, when the front mold reaches the predetermined position, the support seat is driven to move, so that it automatically switches from a state of supporting the ejector plate to ensure safe mold closing to a state of withdrawing the ejector plate to prepare for mold closing. It can be seen that the anti-collision mechanism can support the ejector plate to ensure safe mold closing during the mold closing process, and can withdraw from the ejector plate after the front mold reaches the predetermined position to facilitate mold closing.

Description

Technical Field

[0001] The invention relates to the technical field of injection molding equipment, and in particular to an anti-collision mechanism of an injection mold and an injection mold. Background Art

[0002] The injection mold includes a front mold and a rear mold. The front mold generally forms a cavity. The front mold moves toward the rear mold to complete the mold closing with the rear mold, specifically, to complete the mold closing with the rear mold body of the rear mold. For some designs, there is an undercut design between the side cavity wall of the front mold and the outer side wall of the rear mold body, that is, in the mold closing position, part of the structure of the side cavity wall of the front mold is located in front of the outer side wall of the rear mold body. In the mold closing process, if the rear mold body is in the mold closing position, the front mold will collide with the rear mold body when it moves along the mold closing direction (i.e. forward). Summary of the invention

[0003] The present invention provides an anti-collision mechanism for an injection mold, wherein the injection mold includes an ejector plate supporting a rear mold body, and the anti-collision mechanism includes a support seat, a transmission part, and a linkage part. The support seat can support the ejector plate, and the transmission part is used to be connected to the front mold so as to move along the mold closing direction with the front mold; when the transmission part moves along the mold closing direction, it can drive the linkage part to move, and the linkage part drives the support seat to move. When the front mold moves to a predetermined position along the mold closing direction, the support seat moves to retreat from the ejector plate.

[0004] In a specific embodiment, the linkage portion pushes the bracket to translate or rotate so as to withdraw from the ejector plate during mold closing.

[0005] In a specific embodiment, the linkage part has a first inclined surface, and the transmission part has a second inclined surface. When the transmission part moves along the mold closing direction, the first inclined surface and the second inclined surface can cooperate to push the linkage part to move.

[0006] In a specific embodiment, the linkage portion and the bracket are fixed or integrally arranged.

[0007] 5. The anti-collision mechanism of the injection mold according to claim 4, characterized in that the anti-collision mechanism also includes a slide seat provided with a slide groove, the slide seat is fixed to the base of the rear mold, and the linkage part and the bracket can slide along the slide groove to withdraw from the ejector plate.

[0008] In a specific embodiment, a reset elastic member is further included, and the reset elastic member resets the bracket to a position capable of supporting the ejector plate.

[0009] In a specific embodiment, the reset elastic member is a reset spring, and the anti-collision mechanism also includes a guide rod, which passes through the reset spring; it also includes a support distributed along the withdrawal direction with the linkage part, and the two ends of the guide rod are respectively inserted into the bracket and the support, and the reset spring is located between the bracket and the support.

[0010] In a specific embodiment, the transmission part includes a rod part fixed to the front mold;

[0011] The rod portion is provided with a clamping block for cooperating and connecting with the clamping groove of the side wall of the front mold; and / or the anti-collision mechanism also includes a sliding sleeve, the rod portion can pass through the sliding sleeve and slide along the sliding sleeve, and the sliding sleeve is used to be fixed to the rear mold.

[0012] The present invention also provides an injection mold, which includes a front mold and a rear mold, the rear mold including a base, a rear mold body matching the front mold, and an ejector plate supporting the rear mold body, the ejector plate moves along the mold closing or mold opening direction, driving the rear mold body away from the side cavity wall of the front mold or close to the side cavity wall of the front mold, and also includes the anti-collision mechanism of the injection mold described in any of the above items.

[0013] In a specific embodiment, the end of the ejector plate has a notch for installing the cylinder, and the linkage part and the bracket are also arranged at the notch position.

[0014] In this solution, the injection mold is provided with an anti-collision mechanism, and the movement of the front mold along the mold closing direction can be transmitted to the support seat through the transmission part and the linkage part, and when the front mold reaches the predetermined position, the support seat is driven to move, so that it automatically switches from the state of supporting the ejector plate to ensure safe mold closing to the state of withdrawing the ejector plate to prepare for mold closing. It can be seen that the anti-collision mechanism can not only support the ejector plate during the mold closing process to keep the rear mold body in the safe area to ensure the safe mold closing, but also release the ejector plate from the ejector plate after the front mold reaches the predetermined position to facilitate the mold closing. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 A schematic diagram of an injection mold provided by an embodiment of the present invention;

[0016] Figure 2 for Figure 1 Schematic diagram after removing the front mold and fixed mold;

[0017] Figure 3 for Figure 2 Schematic diagram after removing the large inclined roof;

[0018] Figure 4 for Figure 1 The state of the middle and large inclined top and the front mold after mold closing;

[0019] Figure 5 for Figure 4 A magnified view of the undercut position in the middle I;

[0020] Figure 6 for Figure 3 Schematic diagram of the anti-collision mechanism;

[0021] Figure 7 for Figure 6 Schematic diagram from another perspective;

[0022] Figure 8 for Figure 6 Schematic diagram of the position of the middle rod of the middle anti-collision mechanism with the support seat, linkage part and ejector plate at the beginning of mold closing;

[0023] Fig. 9 for Figure 8 Schematic diagram of the middle rod part contacting the linkage part after moving down a certain distance;

[0024] Fig.10 for Fig. 9 Schematic diagram of the middle rod portion moving further downward to push the bracket away from the ejector plate.

[0025] Figure 1-10 The reference numerals in the drawings are described as follows:

[0026] 1- Base;

[0027] 2-thimble plate; 2a-notch;

[0028] 3-large sloping top; 3a-convex;

[0029] 4-anti-collision mechanism; 41-transmission part; 411-rod; 411a-second inclined surface; 412-mounting block; 412a-block; 413-sliding sleeve; 413a-block; 42-linkage part; 42a-first inclined surface; 43-bracket; 44-sliding seat; 45-support; 46-reset spring; 47-guide rod;

[0030] 5-Fixed mold;

[0031] 6-front mold; 6a-protrusion. DETAILED DESCRIPTION

[0032] In order to enable those skilled in the art to better understand the solution of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0033] like Figure 1-3 As shown, Figure 1 A schematic diagram of an injection mold provided by an embodiment of the present invention; Figure 2 for Figure 1 Schematic diagram after removing the front mold 6 and the fixed mold 5; Figure 3 for Figure 2Schematic diagram after removing the large inclined top 3.

[0034] The anti-collision mechanism 4 of the injection mold in the embodiment of the present invention is used to prevent the rear mold and the front mold 6 from colliding when the injection mold is closed. In particular, as described in the background technology, when there is an undercut fit between the front mold 6 and the rear mold, such a collision is more likely to occur.

[0035] In this embodiment, the injection mold includes a front mold 6 and a rear mold. The front mold 6 forms a cavity, and the rear mold generally remains fixed. The front mold 6 moves toward the rear mold to complete the mold closing process. Figure 1 The front mold 6 moves downward to cooperate with the rear mold. The rear mold body includes a base 1, a fixed mold 5, a rear mold body, and an ejector plate 2 supporting the rear mold body. Figure 2 The main body of the middle and rear mold is specifically a large slanted roof 3 used to make the front skin or rear skin of the vehicle. The large slanted roof 3 cooperates with the cavity wall of the front mold 6 to enclose and form a cavity corresponding to the front skin or rear skin for injection molding. There is an undercut between the large slanted roof 3 and the side cavity wall of the front mold 6.

[0036] Refer to the discount Figure 4-5 understand, Figure 4 for Figure 1 The state after the middle and large inclined top 3 and the front mold 6 are molded together; Figure 5 for Figure 4 That is, when moving along the mold closing direction, if the large inclined top 3 is in the mold closing position, the protrusion 6a of the side cavity wall of the front mold 6 and the protrusion 3a of the outer wall of the large inclined top 3 will interfere with each other, thereby causing a collision. Therefore, when closing the mold, it is necessary to move the large inclined top 3 away from the side cavity wall of the front mold 6, and after the front mold 6 is lowered to the mold closing position, move the large inclined top 3 to the mold closing position to avoid collision.

[0037] like Figure 2 , 3 As shown, in this embodiment, the injection mold is provided with four sets of anti-collision mechanisms 4, which are used to move the anti-collision mechanisms 4 during mold closing to avoid collision.

[0038] Please continue to refer to Figure 6 , 7 , Figure 6 for Figure 3 A schematic diagram of the anti-collision mechanism 4; Figure 7 for Figure 6 Schematic diagram from another perspective.

[0039] The anti-collision mechanism 4 in this embodiment includes a bracket 43, a transmission part 41 and a linkage part 42, and the bracket 43 can support the ejector plate 2. Supporting the ejector plate 2 here means ejecting the ejector plate 2 toward the front mold 6 by a certain distance, and the ejection direction is the same as the mold opening direction and opposite to the mold closing direction.

[0040] It should be known that the ejector plate 2 and the rear mold body adopt the following matching method: the ejector plate 2 and the rear mold body are matched with the inclined surface. When the ejector plate 2 is ejected, the rear mold body will be away from the side cavity wall of the front mold 6. Here, the position of the side wall of the front mold 6 cavity is referenced to the state of the front mold 6 after the mold is closed. When the ejector plate 2 falls back, the rear mold body will be close to the side cavity wall of the front mold 6. Figure 2 In the embodiment, the rear mold body of the rear mold includes two large inclined ejectors 3. When the ejector plate 2 is ejected, the two large inclined ejectors 3 will approach each other, thereby moving away from the side cavity wall of the front mold 6. When the ejector plate 2 falls back, the two large inclined ejectors 3 will move away from each other, thereby moving closer to the side cavity wall of the front mold 6, and finally being in a position for closing the mold with the front mold 6.

[0041] Therefore, when the support seat 43 supports the ejector plate 2, the two large inclined ejectors 3 are close to each other, and the large inclined ejectors 3 are a certain distance away from the side cavity wall of the front mold 6. The front mold 6 can move relatively safely along the mold closing direction. After the front mold 6 moves to the predetermined position, the support seat 43 can retreat from the ejector plate 2 and no longer support the ejector plate 2. Then the rear mold body will retreat as the ejector plate 2 falls. At this time Figure 2 The two large inclined tops 3 as the rear mold body will move away from each other, so that they are in the mold closing position and can cooperate with the front mold 6. The predetermined position here can be the mold closing position or the position close to the mold closing. The main purpose of holding the ejector plate 2 is to move the rear mold body to avoid interference and collision between the rear mold body and the front mold 6 along the mold closing direction. Therefore, after the front mold 6 moves to a certain position, even if the front mold 6 has not reached the mold closing position and is still moving along the mold closing direction, the rear mold body will not form interference and collision even if it is close to the side cavity wall of the front mold 6, and this position is the predetermined position. Of course, setting the predetermined position as the mold closing position is easy to control.

[0042] As described above, after avoiding the collision, the bracket 43 also needs to retreat from the ejector plate 2 so that the rear mold body and the ejector plate 2 return to the mold closing position to ensure the completion of the mold closing. In this embodiment, the retreat of the ejector plate 2 is achieved by the transmission part 41 and the linkage part 42.

[0043] like Figure 1 Combined with Figure 4 , 5 It is understood that the transmission part 41 is used to connect with the front mold 6, and the transmission part 41 can move along the mold closing direction with the front mold 6. The transmission part 41 includes a rod part 411, and a clamping block 412a is provided at the end of the rod part 411. The outer wall of the front mold 6 is provided with a clamping groove, and the clamping block 412a is inserted into the clamping groove in a keying manner, thereby increasing the reliability of the connection between the rod part 411 and the front mold 6, and can better transmit the thrust to push the rod part 411 to move along the mold closing direction. Figure 7In the figure, the transmission part 41 also includes a mounting block 412, and a clamping block 412a is arranged on the mounting block 412, which can be separated from or integrated with the mounting block 412. In order to increase the connection stability, the rod 411 and the mounting block 412 are also inserted into the outer wall of the front mold 6 through fasteners to achieve fixed connection. Of course, the transmission part 41 is not limited to the arrangement structure of the rod 411, the mounting block 412, and the clamping block 412a, and can also be other structural forms, as long as it can move along the mold closing direction with the front mold 6. Here, the clamping block 412a is inserted into the clamping groove, and the rod 411 can also move along the mold opening direction with the front mold 6.

[0044] The transmission part 41 and the linkage part 42 of the anti-collision mechanism 4 are in a linkage relationship. When the transmission part 41 moves along the mold closing direction, it can drive the linkage part 42 to move, and the linkage part 42 and the support seat 43 are also in a linkage relationship, which in turn drives the support seat 43 to move. When the mold is closed, the linkage part 42 can drive the support seat 43 to retreat from the ejector plate 2.

[0045] Please refer to Figure 8-10 understand, Figure 8 for Figure 6 A schematic diagram showing the position of the middle rod 411 of the middle anti-collision mechanism 4, the bracket 43, the linkage part 42 and the ejector plate 2 at the beginning of mold closing; Fig. 9 for Figure 8 A schematic diagram of the middle rod portion 411 moving downward a certain distance and contacting the linkage portion 42; Fig.10 for Fig. 9 A schematic diagram showing that the middle rod portion 411 further moves downward to push the bracket 43 away from the ejector plate 2.

[0046] Figure 8 In the embodiment, the linkage part 42 has a first inclined surface 42a, and the transmission part 41 has a second inclined surface 411a. Specifically, the lower end of the rod part 411 is chamfered to form the second inclined surface 411a. When the transmission part 41 is driven by the front mold 6 to move to a certain distance along the mold closing direction, the first inclined surface 42a of the rod part 411 and the second inclined surface 411a of the linkage part 42 can cooperate. Under the cooperation of the inclined surfaces, the linkage part 42 can be pushed to move, so as to Figure 8 The linkage portion 42 can drive the bracket 43 to move to the left synchronously.

[0047] like Figure 8 As shown, when the mold is closed, the front mold 6 starts to move along the mold closing direction. At this time, the support seat 43 holds the ejector plate 2, and the lower end of the rod 411 and the linkage part 42 are still at a certain distance;

[0048] like Fig. 9 As shown in FIG. 1 , as the mold is gradually closed, the second inclined surface 411a of the rod 411 and the first inclined surface 42a of the linkage portion 42 begin to contact each other, and the pressure generated by the inclined surface on the linkage portion 42 is decomposed into a component force parallel to the mold closing direction and a component force perpendicular to the mold closing direction. Fig. 9 From a viewing angle, the force component perpendicular to the mold closing direction is a horizontal leftward force component, and the horizontal force component can drive the linkage part 42 to move in a direction away from the ejector plate 2. At the same time, the linkage part 42 and the bracket 43 are actually an integrated structure at this time, and the bracket 43 also moves to the left and gradually retreats from the ejector plate 2.

[0049] like Fig.10 As shown, the front mold 6 reaches the predetermined position, specifically, the mold closing position in this embodiment, the first inclined surface 42a of the linkage part 42 and the second inclined surface 411a of the rod part 411 are matched, and this is also the maximum travel of the linkage part 42 and the bracket 43. The bracket 43 is completely separated from the ejector plate 2, and the ejector plate 2 falls, and the rear mold body (i.e. Figure 2 The large inclined top 3) in the mold also falls down and reaches the mold closing position, then the mold can be closed and locked, thereby completing safe mold closing.

[0050] In the above embodiment, at the beginning of mold closing, the second inclined surface 411a of the rod portion 411 and the first inclined surface 42a of the linkage portion 42 do not contact each other, and they start to contact and mate after moving a certain distance in the mold closing direction, which is convenient for installation and prevents interference. However, it can be understood that the first inclined surface 42a of the rod portion 411 and the second inclined surface 411a can also contact each other from the beginning of mold closing.

[0051] When the mold is opened, the ejector plate 2 will be ejected by the mold opening driving component, such as a nitrogen spring, and a certain gap will be left under the ejector plate 2. The bracket 43 can be inserted in reverse and then support the ejector plate 2 again to prevent the ejector plate 2 from falling back, thereby further ensuring the safety of the mold opening and preparing for the next mold closing.

[0052] In order to automatically return the bracket 43, a reset elastic member may be provided to reset the bracket 43 to a position where the bracket 43 can be supported by the ejector plate 2. Figure 8 As shown, the reset elastic member is specifically a reset spring 46. When the bracket 43 gradually retreats away from the ejector plate 2 along with the linkage portion 42, the reset elastic member is gradually compressed. After the rod portion 411 gradually moves upward along with the opening of the front mold 6, the reset spring 46 continuously pushes the bracket 43 close to the ejector plate 2 during the reset process, and is finally inserted under the ejector plate 2 that has been opened to support the ejector plate 2 again.

[0053] In this embodiment, the linkage part 42 and the bracket 43 are integrally arranged. It can be known that the linkage part 42 and the bracket 43 can be separately arranged but fixed together. At this time, the anti-collision mechanism 4 also includes a slide 44 provided with a slide groove. The slide 44 is fixed to the base 1 of the rear mold and is a fixed component. Then the linkage part 42 and the bracket 43 can slide along the slide groove to withdraw from the ejector plate 2, or slide along the slide groove and approach the ejector plate 2 under the reset of the reset spring 46. The setting of the slide 44 is conducive to the guide transmission part 41 to drive the linkage part 42 to move in a predetermined direction, ensuring that the ejector plate 2 can withdraw from and support the ejector plate 2. Of course, it is possible not to set the slide 44, or to set the slide rail and the slide groove directly on the base 1. Here, the slide 44 is fixed to the base 1, and there is no need to modify the base 1, which is simple and easy.

[0054] like Figure 8-10 As shown, the anti-collision mechanism 4 further includes a guide rod 47, and the guide rod 47 penetrates the reset spring 46. In addition, the anti-collision mechanism 4 further includes a support 45 distributed along the withdrawal direction with the linkage portion 42, and the support 45 can be fixed to the slide 44, and the two ends of the guide rod 47 are respectively inserted into the bracket 43 and the support 45, and the reset spring 46 is located between the bracket 43 and the support 45. The guide rod 47 provides support and guidance for the reset spring 46 on the one hand, and can also better limit the bracket 43 in the slide groove.

[0055] like Figure 1 As shown, the anti-collision mechanism 4 in this embodiment further includes a sliding sleeve 413, and the rod 411 can pass through the sliding sleeve 413 and slide along the sliding sleeve 413. The sliding sleeve 413 is used to fix with the rear mold, Figure 1 In the embodiment, the rear mold includes a fixed fixed mold 5, and the sliding sleeve 413 can be fixed to the fixed mold 5. The fixing method of the sliding sleeve 413 and the fixed mold 5 can refer to the fixing method of the rod 411 and the front mold 6, such as Figure 7 As shown, the sliding sleeve 413 is also provided with a clamping block 413a, and the fixed mold 5 is provided with a matching clamping groove, and the sliding sleeve 413 and the fixed mold 5 are also fixed by fasteners. The rod 411 of the transmission part 41 needs to transmit the movement of the front mold 6 to the linkage part 42 located below, and the rod 411 has a certain length. The provision of the sliding sleeve 413 is conducive to providing a good guiding effect for the rod 411 with a certain length.

[0056] like Figure 3 As shown, the end of the ejector plate 2 has a notch 2a, and the linkage part 42 and the bracket 43 can be arranged at the notch 2a position, without occupying too much space of the base 1. Specifically, the four corners of the end of the ejector plate 2 are all provided with notches 2a, and multiple sets of anti-collision mechanisms 4 can be arranged, so that multiple brackets 43 can more reliably and stably support the ejector plate 2. In this embodiment, the notch 2a position can be used for the installation of the rear mold cylinder, and the anti-collision mechanism 4 is also installed here, so that the space can be fully and reasonably utilized.

[0057] It is worth noting that in the above embodiment, the transmission part 41 and the linkage part 42 push the linkage part 42 by means of the inclined surface cooperation, and then push the bracket 43 to move, so as to withdraw from the ejector plate 2 during mold closing. It can be understood that the cooperation method of the transmission part 41, the linkage part 42, and the bracket 43 is not limited to this. For example, the bracket 43 is rotatably arranged on the base 1, and the bracket 43 has an arc-shaped wall, and the arc-shaped wall supports the ejector plate 2. The transmission part 41 directly pushes the linkage part 42 to move downward, and the linkage part 42 then pushes the bracket 43 to rotate. When the mold is closed, the arc-shaped wall is separated from the ejector plate 2, and continues to rotate. The height of the bracket 43 is gradually reduced, so that it no longer supports the ejector plate 2, that is, it withdraws from the ejector plate 2. At this time, the linkage part 42 and the bracket 43 can also be an integrated structure. For another example, the bracket 43 is arranged as in the above embodiment, but the linkage part 42 can be rotatably connected to the base 1, and the linkage part 42 is inserted into the through hole of the bracket 43. The linkage part 42 can be set to have a uniform thickness change, and the transmission part 41 pushes the linkage part 42 to rotate, thereby changing the thickness of the part located in the through hole to push the bracket 43 to move. It can be seen that there are many ways to realize that the linkage part 42 converts the movement of the transmission part 41 along the mold closing direction into the movement of the bracket 43, and this solution does not limit it.

[0058] It can be seen that in this solution, since the mold closing movement of the front mold 6 can be converted to the support seat 43 through the transmission part 41 and the linkage part 42, the support seat 43 is controlled to support the ejector plate 2 to ensure safe mold closing, and automatically switches to the state of retreating from the ejector plate 2 to prepare for mold closing when the front mold 6 reaches the mold closing position.

[0059] The principles and implementation methods of the present invention are described in this article using specific examples. The description of the above embodiments is only used to help understand the method and core ideas of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made to the present invention without departing from the principles of the present invention, and these improvements and modifications also fall within the scope of protection of the claims of the present invention.

Claims

1. An injection mold, characterized in that: The injection mold comprises a front mold (6) and a rear mold, the rear mold comprising a base, a rear mold body matching the front mold (6), and an ejector plate (2) supporting the rear mold body, the ejector plate (2) moving along the mold closing or mold opening direction to drive the rear mold body away from the side cavity wall of the front mold (6) or close to the side cavity wall of the front mold (6); The injection mold comprises an anti-collision mechanism (4), the anti-collision mechanism (4) comprising a support seat (43), a transmission part (41) and a linkage part (42), the support seat (43) being capable of supporting the ejector plate (2), the transmission part (41) being used to be connected to the front mold (6) so as to move along the mold closing direction with the front mold (6); the transmission part (41) being capable of driving the linkage part (42) to move when moving along the mold closing direction, and the linkage part (42) driving the support seat (43) to move along the mold closing direction. When the front mold (6) moves along the mold closing direction to the mold closing position or approaches the mold closing position, the support seat (43) moves to retreat from the ejector plate (2); the rear mold body comprises two large inclined ejectors (3); when the ejector plate (2) is ejected, the two large inclined ejectors (3) approach each other, thereby being away from the side cavity wall of the front mold (6); when the ejector plate (2) falls back, the two large inclined ejectors (3) move away from each other, thereby being close to the side cavity wall of the front mold (6); It also includes a reset elastic member, the reset elastic member resets the bracket (43) to a position capable of supporting the ejector plate (2); The resetting elastic member is a resetting spring (46), and the anti-collision mechanism (4) further comprises a guide rod (47), wherein the guide rod (47) penetrates the resetting spring (46); and further comprises a support (45) distributed along the withdrawal direction with the linkage portion (42), wherein two ends of the guide rod (47) are respectively inserted into the support (43) and the support (45), and the resetting spring (46) is located between the support (43) and the support (45).

2. The injection mold according to claim 1, characterized in that: The linkage part (42) pushes the bracket (43) to move in translation or rotation so as to withdraw from the ejector plate (2) during mold closing.

3. The injection mold according to claim 2, characterized in that: The linkage part (42) has a first inclined surface (42a), and the transmission part (41) has a second inclined surface (411a); when the transmission part (41) moves along the mold closing direction, the first inclined surface (42a) and the second inclined surface (411a) can cooperate to push the linkage part (42) to move.

4. The injection mold according to claim 3, characterized in that: The linkage portion (42) and the bracket (43) are fixed or integrally arranged.

5. The injection mold according to claim 4, characterized in that: The anti-collision mechanism (4) further comprises a slide seat (44) provided with a slide groove, wherein the slide seat (44) is fixed to the base of the rear mold, and the linkage portion (42) and the bracket (43) can slide along the slide groove to withdraw from the ejector plate (2).

6. The injection mold according to any one of claims 1 to 5, characterized in that: The transmission part (41) comprises a rod part (411) fixed to the front mold (6); The rod portion (411) is provided with a clamping block for cooperating with a clamping groove on a side wall of the front mold (6); and / or the anti-collision mechanism (4) further comprises a sliding sleeve (413), the rod portion (411) can pass through the sliding sleeve (413) and slide along the sliding sleeve (413), and the sliding sleeve (413) is used to be fixed to the rear mold.

7. The injection mold according to claim 6, characterized in that: The end of the ejector plate (2) has a notch (2a) for mounting a cylinder, and the linkage portion (42) and the bracket (43) are also arranged at the position of the notch (2a).

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