Injection mold with anti-collision mechanism

Abstract

The utility model discloses an injection mold with an anti-collision mechanism. The injection mold comprises an upper mold plate, a lower mold plate and a hot runner plate, the mold opening and closing device is used for controlling the mold opening process, mold opening between the hot runner plate and the upper mold plate is controlled firstly, and then mold opening between the upper mold plate and the lower mold plate is controlled; the mold closing shutter is used for controlling the mold closing process, firstly, the hot runner plate and the upper mold plate are locked to keep the distance between the hot runner plate and the upper mold plate and enable the upper mold plate and the lower mold plate to be subjected to mold closing, and then locking between the hot runner plate and the upper mold plate is relieved so that the hot runner plate and the upper mold plate can be subjected to mold closing. The mold opening process and the mold closing process are controlled through the mold opening shutter and the mold closing shutter respectively, so that the situation that the upper mold sliding block returns firstly due to the fact that the hot runner plate and the upper mold plate are closed firstly due to unsmooth mold closing of the upper mold plate and the lower mold plate caused by various reasons is effectively avoided, and therefore it can be ensured that the upper mold sliding block cannot crack the lower mold inclined top.

Description

TECHNICAL FIELD

[0001] The utility model relates to injection mold technical field, especially injection mold with anti -collision mechanism. BACKGROUND

[0002] The performance requirement of the existing cooking utensil is continuously improved, so that some shell products need to increase the hole of heat dissipation part, the hole on the shell needs the structure cooperation of the upper die slider and the lower die inclined top to smoothly take out the inverted buckle, because the position of the upper die slider is at the bottom of the lower die inclined top, directly opening the mold can cause the upper die slider to directly hit the lower die inclined top, so the mold action is required: when opening the mold, the upper die slider withdraws first, then the upper and lower mold plates open to take out the product, when closing the mold, the upper and lower mold plates close first, and then the upper die slider resets, so that the upper die slider and the lower die inclined top do not collide.

[0003] The opening action of the prior art injection mold is to buckle the front and lower molds by the on-off device, so that the hot runner plate drives the upper die slider to move first when the hot runner plate is separated first, and the hot runner plate is ejected by the spring when the mold is closed, so that the upper and lower molds are closed first, and when the closing force is greater than the spring force, the upper mold plate and the hot runner plate are closed again to drive the upper die slider to reset; however, the existing injection mold with the structure has the following problems in use: 1, when the spring is fatigued and fails, the top force between the hot runner plate and the upper mold plate is not enough, which may cause the hot runner plate and the upper mold plate to move first, so that the upper die slider resets first, and thus the lower die inclined top is damaged when the upper and lower molds are closed; 2, when the mold temperature rises or the front and lower mold guide columns are stuck, the resistance of the upper and lower molds may be greater than the force of the spring, so that the upper die slider resets first, and thus the lower die inclined top is damaged when the upper and lower molds are closed. CONTENT OF THE UTILITY MODEL

[0004] The utility model is to overcome the defects in the prior art, provide a kind of injection mold with anti -collision mechanism, it is simple and reasonable in structure, by being provided with the mold opening on-off device and the mold closing on-off device for respectively controlling mold opening and mold closing on the mold, so effectively avoid the hot runner plate and the upper mold plate first close to make the upper die slider first reset caused by the upper and lower mold plates to close unsmoothly, so that the upper die slider can not hit the lower die inclined top.

[0005] To achieve the above object, the utility model provides a kind of injection mold with anti -collision mechanism, it includes the upper and lower relative arrangement upper mold plate and lower mold plate, and the hot runner plate being set in the upper mold plate upper, the working state of mold includes injection state, first time mold opening state and mold closing state;

[0006] It also includes the mold opening on-off device and the mold closing on-off device for respectively controlling mold opening and mold closing;

[0007] When the mold changes from the injection state to the first time opening state, the mold opening and closing device controls the locking between the upper and lower mold plates to realize the opening of the mold between the hot runner plate and the upper mold plate;

[0008] When the mold changes from the first time opening state to the closing state, the mold opening and closing device controls the unlocking between the upper and lower mold plates to realize the opening of the mold between the upper and lower mold plates, and in the process, the mold closing and opening device controls the locking between the upper mold plate and the hot runner plate to maintain the spacing;

[0009] When the mold changes from the closing state to the first time opening state, the mold closing and opening device keeps the locking between the hot runner plate and the upper mold plate to realize the closing of the mold between the upper and lower mold plates;

[0010] When the mold changes from the first time opening state to the injection state, the mold closing and opening device controls the unlocking between the hot runner plate and the upper mold plate to realize the closing of the mold between the hot runner plate and the upper mold plate, and in the process, the mold opening and closing device controls the relocking between the upper and lower mold plates.

[0011] Further provided is that the mold opening and closing device comprises a sliding seat, a control sliding block, a clamping plate and a pulling plate;

[0012] The sliding seat is fixedly installed on the upper mold plate, and a horizontally extending sliding opening is arranged in the sliding seat, the control sliding block is movably installed in the sliding opening, the clamping plate is fixedly installed on the lower mold plate and extends vertically upward, and a locking hook part is arranged at the upper end of the clamping plate, and the pulling plate is fixedly installed on the hot runner plate and extends vertically downward, and a linkage part is arranged at the lower end of the pulling plate;

[0013] First and second groups of through openings are arranged on the upper and lower sides of the sliding seat and are in communication with the sliding opening, and first and second communication openings are arranged on the control sliding block;

[0014] When the mold is in the injection state, the locking hook part of the clamping plate is clamped on the control sliding block to realize the locking between the upper and lower mold plates, and the linkage part of the pulling plate is located below the sliding seat;

[0015] When the mold is in the first time opening state, the control sliding block is pressed back by the linkage part of the pulling plate, so that the first group of through openings and the first communication opening are directly communicated to form a channel for the clamping plate to slide in or out.

[0016] Further provided is that the mold opening and closing device further comprises a spring arranged between the control sliding block and the sliding seat, and the spring enables the control sliding block to have a movement tendency to reset against the pulling plate.

[0017] Further provided is that the mold closing and opening device comprises a top block, a spring block and a guide;

[0018] The top block is fixedly installed on the hot runner plate and extends vertically downward, the elastic block is telescopically arranged on the upper die plate, and the guide is arranged on the lower die plate;

[0019] When the mold is in the injection molding state, the top block and the guide simultaneously press on the elastic block to make the elastic block in a compressed state;

[0020] When the mold changes from the injection molding state to the first mold opening state, the top block moves vertically upward along with the hot runner plate until the lower end of the top block moves above the elastic block and is completely separated from the elastic block;

[0021] When the mold changes from the first mold opening state to the mold closing state, the guide moves vertically downward along with the lower die plate until the guide moves below the elastic block and is completely separated from the elastic block, at this time, the elastic block is ejected, and the lower end of the top block abuts against the upper end surface of the elastic block to realize the locking between the hot runner plate and the upper die plate;

[0022] When the mold changes from the mold closing state to the first mold opening state, the guide moves vertically upward along with the lower die plate until the elastic block is compressed under the guidance of the guide, at this time, the top block can pass over the elastic block to realize the unlocking between the upper die plate and the hot runner plate.

[0023] Further, the mold opening and closing device and the mold closing device are independent components, the guide is a pressing block arranged on the lower die plate and extending vertically upward, the upper end of the pressing block protrudes above the lower die plate, a socket for inserting the top block is arranged on the pressing block, and a first wedge structure for guiding the compression of the elastic block is arranged on the upper end of the pressing block.

[0024] Further, the mold opening and closing device and the mold closing device are integrated components, the guide is a buckle plate of the mold opening and closing device, a guide portion is arranged above the locking hook portion of the buckle plate, a second wedge structure for guiding the compression of the elastic block is arranged on the upper end of the guide portion, the top block is integrally connected with the pull plate, and a gap slot for inserting the guide portion of the buckle plate is arranged on the top block.

[0025] Further, a constraint frame for constraining the movement of the buckle plate is arranged between the slide block and the elastic block of the upper die plate.

[0026] Further, an equal height screw is arranged between the upper die plate and the hot runner plate to limit the maximum separation distance between the upper die plate and the hot runner plate.

[0027] Compared with the prior art, the present invention has a simple and reasonable structure. By setting mold opening and closing devices and mold closing devices on the mold respectively for controlling mold opening and mold closing, it effectively avoids the hot runner plate and upper mold plate closing first due to various reasons, which would cause the upper mold slider to return to its original position first. This ensures that the upper mold slider will not damage the lower mold inclined top. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of the structure of an injection mold with an anti-collision mechanism according to this utility model. Figure 1 (Injection molding state);

[0029] Figure 2 yes Figure 1 A schematic diagram of the vertical cross-sectional structure of an injection mold;

[0030] Figure 3 yes Figure 1 Schematic diagram of the structure of a medium injection mold Figure 2 (First mold opening state);

[0031] Figure 4 yes Figure 1 Schematic diagram of the structure of a medium injection mold Figure 3 (Mold closed state);

[0032] Figure 5 yes Figure 1 Schematic diagram of the mold opening and closing device Figure 1 ;

[0033] Figure 6 yes Figure 1 Schematic diagram of the mold opening and closing device Figure 2 ;

[0034] Figure 7 This is a schematic diagram of the injection mold structure for another implementation scheme. Figure 1 (Injection molding state);

[0035] Figure 8 yes Figure 7 Schematic diagram of the structure of a medium injection mold Figure 2 (First mold opening state);

[0036] Figure 9 yes Figure 7 Schematic diagram of the structure of a medium injection mold Figure 3 (Mold closed state);

[0037] Figure 10 yes Figure 7 Schematic diagram of integrated switch Figure 1 ;

[0038] Figure 11 yes Figure 7Structure diagram of integrated open-close device Figure 2 .

[0039] The following reference signs are marked on the drawings:

[0040] 10, hot runner plate; 11, push block; 20, upper die plate; 21, upper die slide block; 30, lower die plate; 31, lower die inclined ejector pin; 40, equal height screw; 50, mold opening open-close device; 60, mold closing open-close device; 70, integrated open-close device; 81, slide block; 811, slide opening; 812, first group of through openings; 813, second group of through openings; 82, control slide block; 821, first communication opening; 822, second communication opening; 83, clamping plate; 831, locking hook part; 832, guiding part; 833, second wedge opening; 84, pull plate; 841, linkage part; 85, spring; 86, pressing block; 861, insertion opening; 862, first wedge opening; 87, top block; 871, accommodation slot; 88, elastic block; 89, constraint frame. DETAILED DESCRIPTION

[0041] One specific embodiment of the present application will be described in detail below with reference to the drawings, but it should be understood that the scope of protection of the present application is not limited by the specific embodiment.

[0042] The injection mold with the anti-collision mechanism according to the present application Figures 1 to 11 As shown in the figure, it comprises upper and lower die plates 20 and 30 arranged oppositely, and a hot runner plate 10 arranged above the upper die plate 20, wherein the hot runner plate 10 is provided with a push block 11, the upper die plate 20 is provided with a movable upper die slide block 21, the lower die plate 30 is provided with a lower die inclined ejector pin 31 arranged oppositely with the upper die slide block 21 to cooperate with the preparation of the hole structure on the shell part, and the hot runner plate 10 can be vertically moved relative to the upper die plate 20, and the upper die slide block 21 can be linked to move horizontally by the push block 11 to realize the relative movement or the away movement between the upper die slide block 21 and the lower die inclined ejector pin 31.

[0043] The working state of the injection mold comprises an injection state, a first mold opening state and a mold closing state, wherein the process that the mold changes from the injection state to the first mold opening state and the mold closing state in sequence is mold opening, and the process that the mold changes from the mold closing state to the first mold opening state and the injection state in sequence is mold closing; when the mold is in the injection state, the hot runner plate 10 and the upper die plate 20, and the upper die plate 20 and the lower die plate 30 are all completely closed; when the mold is in the first mold opening state, the hot runner plate 10 and the upper die plate 20 are completely opened, and the upper die plate 20 and the lower die plate 30 are completely closed; when the mold is in the mold closing state, the hot runner plate 10 and the upper die plate 20, and the upper die plate 20 and the lower die plate 30 are all completely opened.

[0044] The injection mold further comprises a mold opening shutter 50 and a mold closing shutter 60 for controlling the mold opening and the mold closing respectively, so that the mold opening and the mold closing are effectively controlled by the mold opening shutter 50 and the mold closing shutter 60 respectively, thus avoiding the situation that the hot runner plate 10 and the upper mold plate 20 are closed first due to the poor mold closing of the upper mold plate 20 and the lower mold plate 30 caused by various reasons, so that the upper mold slide 21 is returned first, thereby ensuring that the upper mold slide 21 will not be damaged by the lower mold inclined top 31; specifically, in the process of changing the mold from the injection state to the first mold opening state, the mold opening shutter 50 controls the locking between the upper mold plate 20 and the lower mold plate 30 to realize the mold opening between the hot runner plate 10 and the upper mold plate 20; in the process of changing the mold from the first mold opening state to the mold closing state, the mold opening shutter 50 controls the unlocking between the upper mold plate 20 and the lower mold plate 30 to realize the mold opening between the upper mold plate 20 and the lower mold plate 30, and in this process, the mold closing shutter 60 controls the locking between the upper mold plate 20 and the hot runner plate 10 to maintain the spacing; in the process of changing the mold from the mold closing state to the first mold opening state, the mold closing shutter 60 controls the locking between the hot runner plate 10 and the upper mold plate 20 to realize the mold closing between the upper mold plate 20 and the lower mold plate 30; in the process of changing the mold from the first mold opening state to the injection state, the mold closing shutter 60 controls the unlocking between the hot runner plate 10 and the upper mold plate 20 to realize the mold closing between the hot runner plate 10 and the upper mold plate 20, and in this process, the mold opening shutter 50 controls the relocking between the upper mold plate 20 and the lower mold plate 30. Embodiment

[0045] In this embodiment, as shown in Figure 1 , Figure 3 and Figure 4 , the mold opening shutter 50 is an independent functional component, and the mold opening shutter 50 is two and is arranged on the two sides of the mold in the transverse direction; the mold closing shutter 60 is also an independent functional component, and the mold closing shutter 60 is two and is arranged on the two sides of the mold in the longitudinal direction.

[0046] As shown in Figure 4 , Figure 5 and Figure 6 , the mold opening shutter 50 comprises a sliding seat 81, a control sliding block 82, a buckle plate 83 and a pull plate 84, wherein the sliding seat 81 is fixedly installed on the upper mold plate 20 and a horizontally extending sliding opening 811 is arranged in the sliding seat 81, the control sliding block 82 is horizontally slidably installed in the sliding opening 811, the buckle plate 83 is vertically upwardly fixedly installed on the lower mold plate 30 and a locking hook portion 831 is arranged at the upper end of the buckle plate 83, and the pull plate 84 is vertically downwardly fixedly installed on the hot runner plate 10 and a linkage portion 841 is arranged at the lower end of the pull plate 84.

[0047] As shown in Figure 5 and Figure 6As shown, the upper and lower sides of the slide 81 are provided with a pair of first and second groups of through openings 812 and 813 arranged in pairs and communicated with the slide opening 811, and the control slide 82 is provided with a first and second communication openings 821 and 822, wherein the first group of through openings 812 and the first communication opening 821 cooperate to form a first channel for the insertion of the buckle plate 83, and the second group of through openings 813 and the second communication opening 822 cooperate to form a second channel for the movement of the pull plate 84; preferably, the mold opening and closing device 50 further comprises a spring 85 arranged between the control slide 82 and the slide 81, and the spring 85 enables the control slide 82 to have a movement tendency to reset against the pull plate 84; in this way, the pull plate 84 is vertically moved up and down along the second channel to control whether the linkage part 841 thereon acts on the control slide 82, and when the linkage part 841 acts on the control slide 82, the control slide 82 is forced to slide to enable the first group of through openings 812 and the first communication opening 821 to be in direct communication to enable the buckle plate 83 to freely enter and exit, at which time the spring 85 is compressed; when the linkage part 841 does not act on the control slide 82, the spring 85 resets the control slide 82, and the first group of through openings 812 and the first communication opening 821 are misaligned, at which time the locking hook part 831 of the buckle plate 83 can be buckled on the control slide 82.

[0048] In this embodiment, as shown in Figure 4 , Figure 5 and Figure 6 , the mold closing and opening device 60 comprises a top block 87, a spring block 88 and a pressing block 86, wherein the top block 87 is fixedly installed on the hot runner plate 10 and extends vertically downward, the spring block 88 is arranged on the upper mold plate 20 and is retractable, and the pressing block 86 extends vertically upward and is arranged on the lower mold plate 30 and protrudes above the upper mold plate 30, and the pressing block 86 is provided with an insertion opening 861 for the insertion of the top block 87 and is provided with a first wedge opening 862 structure for guiding the compression of the spring block 88 at the upper end thereof; such a structure enables: during the mold closing process, the pressing block 86 acts on the spring block 88 through the first wedge opening 862 structure to press the spring block 88 into the upper mold plate 20, thereby achieving the unlocking between the hot runner plate 10 and the upper mold plate 20 to enable the top block 87 to move downward beyond the spring block 88; during the mold opening process, the top block 87 first moves vertically upward above the spring block 88 to release the pressure on the spring block 88, and then the spring block 88 moves vertically upward with the upper mold plate 20 to release the pressure between the spring block 88 and the pressing block 86, so that the spring block 88 is ejected under the action of the elastic force to enable the lower end of the top block 87 to abut against the upper end surface of the spring block 88, thereby achieving the locking between the hot runner plate 10 and the upper mold plate 20 to maintain the spacing therebetween.

[0049] The mold opening process of the injection mold of the present patent is as follows:

[0050] As shown in Figure 1As shown, when the mold is in the injection molding state, the hot runner plate 10 and the upper mold plate 20 are completely closed, and the upper mold plate 20 and the lower mold plate 30 are completely closed. At this time, the locking hook part 831 of the buckle plate 83 is inserted above the control slider 82 and buckled on the control slider 82 to achieve the locking between the upper mold plate 20 and the lower mold plate 30. The linkage part 841 of the pull plate 84 is inserted below the sliding seat 81. The top block 87 is inserted into the socket 861 of the pressing block 86, and the pressing block 86 and the top block 87 are both pressed on the elastic block 88.

[0051] When the mold changes from the injection molding state to the first mold opening state, the buckle plate 83 on the lower mold plate 30 buckles the upper mold plate 20 to lock them. At this time, the hot runner plate 10 vertically moves upward under the pulling of the mold opening force to open the mold between the hot runner plate 10 and the upper mold plate 20. In this process, the hot runner plate 10 moves away from the lower mold inclined top 31 through the linkage of the push block 11. At the same time, the pull plate 84 and the top block 87 also rise with the hot runner plate 10. Preferably, an equal height screw 40 is arranged between the upper mold plate 20 and the hot runner plate 10 to limit the maximum separation distance between the hot runner plate 10 and the upper mold plate 20.

[0052] As shown in the figure, Figure 3 When the mold is in the first mold opening state, the hot runner plate 10 rises to the highest position of the equal height screw 40 so that the hot runner plate 10 is pulled by the equal height screw 40. The linkage part 841 of the pull plate 84 rises into the second communication port 822 of the control slider 82 to force the control slider 82 to move horizontally, so that the first group of through ports 812 and the first communication port 821 are straight through to achieve the unlocking between the upper mold plate 20 and the lower mold plate 30. At the same time, the top block 87 rises above the elastic block 88 to release the pressure on the elastic block 88.

[0053] When the mold changes from the first mold opening state to the mold closing state, the hot runner plate 10 is pulled by the equal height screw 40 to limit the separation between them. Thus, the whole of the upper mold plate 20 and the hot runner plate 10 continues to move upward under the pulling of the mold opening force to open the mold between the upper mold plate 20 and the lower mold plate 30. In this process, the sliding seat 81 and the elastic block 88 rise with the upper mold plate 20, so that the buckle plate 83 completely slides out of the first channel. The elastic block 88 moves above the pressing block 86 to release the pressure between them, so that the elastic block 88 is ejected out of the upper mold plate 20 under the action of the elastic force. The lower end of the top block 87 abuts on the upper end surface of the elastic block 88 to achieve the locking between the hot runner plate 10 and the upper mold plate 20.

[0054] As shown in the figure, Figure 4 When the mold is in the mold closing state, the hot runner plate 10 and the upper mold plate 20 are completely opened, and the upper mold plate 20 and the lower mold plate 30 are completely opened to eject the product in them.

[0055] The mold closing process of the injection mold of the present patent is:

[0056] When the mold changes from the clamping state to the first opening state, the lower end of the top block 87 abuts against the upper end face of the elastic block 88 to achieve the locking between the hot runner plate 10 and the upper die plate 20, and the overall hot runner plate 10 and the upper die plate 20 move vertically downward under the driving of the clamping force to make the upper die plate 20 and the lower die plate 30 first clamped; in this process, the elastic block 88 and the slide 81 move vertically downward together with the upper die plate 20, so that the clamping plate 83 is inserted into the first channel, and the pressing block 86 moves toward the elastic block 88;

[0057] When the mold is in the first opening state, the upper die plate 20 and the lower die plate 30 are fully clamped, the locking part of the clamping plate 83 moves above the control slide 82, and the first wedge gap 862 structure of the pressing block 86 abuts against the elastic block 88 to make the elastic block 88 pressed into the upper die plate 20 to contact the locking between the top block 87 and the elastic block 88 (the hot runner plate 10 and the upper die plate 20);

[0058] When the mold changes from the first opening state to the injection state, the hot runner plate 10 continues to move vertically downward under the action of the clamping force to achieve the clamping between the hot runner plate 10 and the upper die plate 20; in this process, the pull plate 84 moves vertically downward together with the hot runner plate 10 to make the linkage part 841 thereon separated from the control slide 82, so that the control slide 82 resets under the action of the spring 85 to make the locking hook part 831 of the clamping plate 83 locked on the upper end face of the control slide 82 to achieve the locking between the upper die plate 20 and the lower die plate 30, and the top block 87 also moves vertically downward together with the hot runner to make the top block 87 inserted into the socket 861 of the pressing block 86 beyond the elastic block 88, and the hot runner plate 10 moves toward the lower die inclined top 31 through the linkage of the push block 11 and the upper die slide 21. Embodiment

[0059] Compared with the first embodiment, the mold opening and closing device 50 and the mold clamping and opening device 60 of the second embodiment are integrated functional components, as shown in Figure 7 、 Figure 8 and Figure 9 The integrated opening and closing device 70 is two and is arranged on the longitudinal two sides of the mold, so as to facilitate the miniaturization of the opening and closing device and effectively reduce the cost.

[0060] The integrated opening and closing device 70 of the second embodiment is deformed on the basis of the mold opening and closing device 50 of the first embodiment, as shown in Figures 7 to 11As shown, the upper die plate 20 is provided with the retractable elastic block 88 corresponding to the first through hole group 812 of the slide 81, the buckle plate 83 is provided with the guide part 832 corresponding to the upper direction of the locking part, and the upper end of the guide part 832 is provided with the second wedge opening 833 structure for pressing the elastic block 88, and the pull plate 84 is provided with the top block 87 corresponding to the upper structure of the elastic block 88, and the top block 87 is provided with the accommodation slot 871 for the insertion of the guide part 832 of the buckle plate 83.

[0061] In the above scheme, the upper die plate 20 is further provided with the constraint frame 89 between the slide 81 and the elastic block 88 for constraining the movement of the guide part 832 of the buckle plate 83, so that the movement of the buckle plate 83 can be better constrained.

[0062] Compared with the prior art, the utility model discloses simple structure, reasonable, through setting up respectively for controlling the mold opening and closing the mold opening switch and closing the mold switch, so effectively avoid the various reasons caused by the hot runner plate and the upper die plate and the upper die slide are first combined to make the upper die slide first return, thereby can ensure that the upper die slide will not hit the lower die inclined top.

[0063] The above disclosed is only the embodiment of the utility model, but, the utility model is not limited to this, any person skilled in the art can think of the change and should fall into the protection scope of the utility model.

Claims

1. An injection mold with anti-collision mechanism, comprising an upper mold plate and a lower mold plate oppositely arranged, and a hot runner plate arranged above the upper mold plate, the working states of the mold comprising an injection state, a first mold opening state and a mold closing state; characterized in that Further comprising a mold opening shutter and a mold closing shutter for controlling the mold opening and the mold closing respectively; During the change of the mold from the injection state to the first mold opening state, the mold opening shutter controls the locking between the upper and lower mold plates to realize the mold opening between the hot runner plate and the upper mold plate; During the change of the mold from the first mold opening state to the mold closing state, the mold opening shutter controls the unlocking between the upper and lower mold plates to realize the mold opening between the upper and lower mold plates, and during the change, the mold closing shutter controls the locking between the upper mold plate and the hot runner plate to maintain the spacing; During the change of the mold from the mold closing state to the first mold opening state, the mold closing shutter controls the locking between the hot runner plate and the upper mold plate to realize the mold closing between the upper and lower mold plates; During the change of the mold from the first mold opening state to the injection state, the mold closing shutter controls the unlocking between the hot runner plate and the upper mold plate to realize the mold closing between the hot runner plate and the upper mold plate, and during the change, the mold opening shutter controls the relocking between the upper and lower mold plates.

2. The injection mold with anti-collision mechanism according to claim 1, characterized in that, The mold opening shutter comprises a sliding seat, a control sliding block, a clamping plate and a pulling plate; The sliding seat is fixedly installed on the upper mold plate, and a horizontally extending sliding opening is arranged in the sliding seat, the control sliding block is movably installed in the sliding opening, the clamping plate is fixedly installed on the lower mold plate and extends vertically upward, and a locking hook part is arranged at the upper end of the clamping plate, the pulling plate is fixedly installed on the hot runner plate and extends vertically downward, and a linkage part is arranged at the lower end of the pulling plate; A first opening group and a second opening group are arranged on the upper and lower sides of the sliding seat in pairs and communicate with the sliding opening, and the control sliding block is provided with a first communication opening and a second communication opening; When the mold is in the injection state, the locking hook part of the clamping plate is clamped on the control sliding block to realize the locking between the upper and lower mold plates, and the linkage part of the pulling plate is located below the sliding seat; When the mold is in the first mold opening state, the control sliding block is pressed back by the linkage part of the pulling plate, so that the first opening group and the first communication opening are directly communicated to form a channel for the clamping plate to slide in or out.

3. The injection mold with anti-collision mechanism according to claim 2, wherein, The mold opening shutter further comprises a spring arranged between the control sliding block and the sliding seat, and the spring enables the control sliding block to have a movement tendency to reset against the pulling plate.

4. An injection mold with an anti-collision mechanism according to claim 2 or 3, characterized in that, The mold closing shutter comprises a top block, a spring block and a guide part; The top block is fixedly installed on the hot runner plate and extends vertically downward, the spring block is arranged on the upper mold plate in an extendable manner, and the guide part is arranged on the lower mold plate; When the mold is in the injection state, the top block and the guide part simultaneously press on the spring block to make the spring block in a compressed state; During the change of the mold from the injection state to the first mold opening state, the top block moves vertically upward with the hot runner plate until the lower end of the top block moves above the spring block and is completely separated from the spring block; When the mold changes from the first mold opening state to the mold closing state, the guide member moves vertically downward with the lower mold plate until the guide member moves below the elastic block and is completely separated from the elastic block, at which time the elastic block is ejected and the lower end of the top block abuts against the upper end surface of the elastic block to achieve locking between the hot runner plate and the upper mold plate; When the mold changes from the mold closing state to the first mold opening state, the guide member moves vertically upward with the lower mold plate until the elastic block is compressed under the guidance of the guide member, at which time the top block can pass over the elastic block to achieve unlocking between the upper mold plate and the hot runner plate.

5. The injection mold with anti-collision mechanism according to claim 4, wherein, The mold opening and closing device and the mold closing and opening device are independent components, the guide member is a pressing block arranged vertically upward on the lower mold plate, the upper end of the pressing block protrudes above the lower mold plate, a socket for inserting the top block is arranged on the pressing block, and a first wedge structure for guiding the compression of the elastic block is arranged on the upper end of the pressing block.

6. The injection mold with anti-collision mechanism according to claim 4, wherein, The mold opening and closing device and the mold closing and opening device are integrated components, the guide member is a buckle plate of the mold opening and closing device, the buckle plate is provided with a guide portion above the locking hook portion, the upper end of the guide portion is provided with a second wedge structure for guiding the compression of the elastic block, the top block is integrally connected with the pull plate, and a clearance slot for the guide portion of the buckle plate to extend into is arranged on the top block.

7. An injection mold with an anti-collision mechanism according to claim 6, characterized in that, The upper mold plate is further provided with a constraint frame between the slide block and the elastic block for constraining the movement of the buckle plate.

8. The injection mold with anti-collision mechanism according to claim 1, wherein, An equal height screw is arranged between the upper mold plate and the hot runner plate to limit the maximum separation distance between the upper mold plate and the hot runner plate.

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