Injection mold with secondary ejection and anti-collision ejector pin

Abstract

The invention relates to a secondary ejection and anti-collision ejector pin injection mold and belongs to the technical field of injection molds, the secondary ejection and anti-collision ejector pin injection mold comprises a base, an ejector pin plate, a linkage piece and a supporting piece, a lifting area is arranged in the base, an ejection hole is formed in the bottom end of the base, and a needle penetrating hole is formed in the top end of the base; a needle passing hole is formed in the groove bottom of the profiled groove; the ejector plate is arranged in the lifting area, and ejector pins extending into the needle penetrating holes and the needle passing holes and used for ejecting injection molding finished products are fixed to the top end of the ejector plate. The lower end of the linkage part is fixed to the ejector plate, and the upper end of the linkage part is detachably connected to the lower mold plate, so that the upper mold plate can be linked to move upwards while the ejector rod is utilized to push the ejector plate to move upwards, and the mold core is conveniently withdrawn from an injection molding finished product; and the lower end of the supporting piece is fixed on the base, and the upper end of the supporting piece is detachably connected to the lower mold plate, so that after the mold core is separated from an injection molding finished product, the connection between the upper mold plate and the linkage piece can be released, and the lower mold plate is connected, positioned and supported, and the injection molding finished product can be conveniently ejected by the ejector pin which continuously ascends.

Description

Technical Field

[0001] The invention relates to the technical field of injection molds, in particular to an injection mold with secondary ejection and anti-collision ejector pins. Background Art

[0002] Injection molds are tools for producing plastic products and also tools for giving plastic products complete structures and precise dimensions. Injection molding is a processing method used in mass production of certain parts with complex shapes. Specifically, it refers to injecting heated and melted plastic into the mold cavity under high pressure by an injection molding machine, and then cooling and solidifying to obtain a molded product.

[0003] At present, the traditional injection mold is mainly composed of an upper template, a lower template, a mold core and a push rod, wherein the bottom surface of the upper template is provided with an upper mold groove; the lower template is located below the upper template and its top surface is provided with a lower mold groove, and the bottom of the lower mold groove is provided with a top hole; the mold core is placed in the lower groove; the push rod slides in the top hole and can push the mold core to move upward; in actual application, the upper template is pressed on the lower template and the push rod is placed in the top hole to form an injection cavity between the push rod, the mold core, the upper mold groove and the lower mold groove; when the finished product is formed in the injection cavity, the push rod can be pushed upward to eject the mold core and the injection molded product. Although the above structure can realize the rapid ejection of the injection molded product, the injection molded product is not separated from the mold core and needs to be manually separated, which will not only increase the labor intensity of employees and reduce the injection molding efficiency, but also easily cause the injection molded product to be demolded and torn, affecting the demolding efficiency and demolding effect of the injection molded product, resulting in an increase in the defective rate of the injection molded product.

[0004] Therefore, how to design an injection mold that is simple in structure, easy to operate, not prone to tearing, and easy to remove the finished injection molded product is a problem that technical personnel in this field urgently need to solve. Summary of the invention

[0005] The invention provides an injection mold with secondary ejection and anti-collision ejector pin, which solves the technical problems that the existing injection mold is difficult to demould and take out and is prone to demoulding cracks.

[0006] The technical solution of the present invention to solve the above technical problems is as follows: an injection mold for secondary ejection and anti-collision ejector pins, comprising a lower mold plate and an upper mold plate, wherein the top surface of the lower mold plate is provided with a groove; the upper mold plate is placed on the lower mold plate and is provided with a pouring hole connected to the groove; and further comprising:

[0007] A base, the lower template is placed on the base; a mold core is fixed on the top of the base and a lifting area with two sides passing through is provided inside the base, an ejection hole connected to the lifting area is provided at the bottom, and a needle hole connected to the lifting area is provided at the top; a core hole and a needle hole arranged opposite to the needle hole are provided at the bottom of the groove; the mold core extends into the groove through the core hole and defines an injection cavity between the mold core, the groove and the upper template;

[0008] An ejector plate, the ejector plate is placed in the lifting area, and an ejector is fixed on the top of the ejector plate, which extends into the needle hole and the needle hole and is used to eject the injection molded product; an ejector rod is slid in the ejection hole and can push the ejector plate to move upward;

[0009] A linkage member and a support member, wherein the lower end of the linkage member is fixed to the side wall of the ejector plate, the lower end of the support member is fixed to the side wall of the base, the upper end of the linkage member and the upper end of the support member can be switched to be connected to the lower template so that the mold core is separated from the injection molded product, and after the lower template is disconnected from the linkage member, the lower template is connected, positioned and supported.

[0010] The beneficial effects of the present invention are as follows: the structure of the traditional injection mold is improved, the lower end of the linkage part is firstly fixed on the ejector plate, and since the upper end of the linkage part is detachably connected to the lower template, the upper template can be linked to move upward while the ejector plate is pushed upward by the ejector rod, so that the immobile mold core can exit the injection cavity and separate from the finished injection molded product formed in the injection cavity; and then the lower end of the support part is fixed on the base, and since the upper end of the support part is detachably connected to the lower template, after the mold core separates from the finished injection molded product, the connection between the upper template and the linkage part is released and the lower template is supported to no longer move upward or downward, so that the ejector pin which continues to move upward with the ejector plate passes through the pinhole and extends into the injection cavity to eject the finished injection molded product in the injection cavity, so that the mold core is separated from the finished injection molded product before the ejector pin ejects the finished injection molded product, thereby improving the demoulding efficiency and separation effect of the finished injection molded product and improving the yield rate of the finished injection molded product.

[0011] Based on the above technical solution, the present invention can also be improved as follows.

[0012] Furthermore, the base includes a lower plate and an upper plate, the top of the lower plate is provided with a lifting groove running through both sides thereof; the upper plate is placed on the lower plate; the bottom end of the mold core is fixed on the top of the upper plate; the lifting area is the lifting groove; the ejection hole is provided on the lower plate; the needle hole is provided on the upper plate; and the lower template is placed on the upper plate.

[0013] Further, the mold core includes a first movable mold core block, a second movable mold core block and a fixed mold core block, the first movable mold core block is placed in the mold groove and a receiving groove opposite to the core hole is provided at its bottom end, and an outlet hole connected to the receiving groove is provided on its side wall; the second movable mold core block is placed at the bottom of the mold groove and is located in the receiving groove, a protrusion is fixed on the side of the second movable mold core block corresponding to the outlet hole, and a side away from the outlet hole is a first inclined surface arranged from top to bottom in a direction close to the outlet hole; the bottom end of the fixed mold core block is fixed to the top of the base and extends into the receiving groove through the core hole, and a side of the fixed mold core block close to the first movable mold core block is a second inclined surface arranged from bottom to top in a direction away from the outlet hole, and the second inclined surface is in sliding contact with the first inclined surface to move downward with the lower mold plate to link the first movable mold core block and the second movable mold core block to move downward so that the protrusion extends out of the outlet hole and is placed above the pinhole.

[0014] The above-mentioned further beneficial effect is as follows: the first movable mold core block and the second movable mold core block are linked by the lower mold plate. Since the first inclined surface of the second movable mold core block is in sliding contact with the second inclined surface of the fixed mold core block, when the first movable mold core block and the second movable mold core block move upward, the fixed mold core block can push the protrusion on the second movable mold core block to retract into the opening. Since the protruding protrusion of the opening is located above the pinhole and the ejector plate and the ejector pin move synchronously with the lower mold plate, the collision between the ejector pin and the protrusion can be avoided.

[0015] 1. Further, the linkage member includes two linkage strips and two clamping blocks, the two linkage strips are arranged along the vertical direction of the base and their lower ends are respectively fixed on both sides of the ejector plate, and the upper ends of the two linkage strips are provided with clamping grooves; both sides of the lower template are provided with first grooves, and the two first grooves are respectively arranged opposite to the two linkage strips; the two clamping blocks are elastically connected to the groove bottoms of the two first grooves by springs and can extend out of the corresponding first grooves and extend into the corresponding clamping grooves to realize the detachable connection between the linkage strip and the upper template.

[0016] A further beneficial effect of the above method is that two clamping blocks are elastically connected to the bottoms of the two first grooves on both sides of the upper template through springs. When the clamping blocks are extended into or out of the corresponding grooves, a detachable connection between the linkage strip and the upper template can be achieved.

[0017] Furthermore, it also includes two limit blocks, and installation grooves are provided on both sides of the upper template, and the two installation grooves are arranged opposite to the two linkage strips respectively; the two limit blocks are elastically connected to the bottom of the two installation grooves through springs and can extend out of the corresponding installation grooves to overlap the top of the corresponding linkage strips.

[0018] Furthermore, the support member includes two support strips and two support blocks, the two support strips are arranged along the vertical direction of the base and their lower ends are respectively fixed on both sides of the base; second grooves are provided on both sides of the lower template, and the two second grooves are respectively arranged opposite to the two support strips; the two support blocks are elastically connected to the bottom of the two second grooves by springs and can extend out of the corresponding second grooves to overlap the top of the corresponding support strips to realize the detachable connection between the support strips and the upper template.

[0019] A further beneficial effect of the above method is that two support blocks are elastically connected to the bottoms of the two second grooves on both sides of the upper template through springs. After the card block exits the card slot, the support block can be overlapped on the top of the corresponding support strip, which can prevent the upper template from falling and facilitate the ejector pin that continues to move upward to eject the injection molded product in the injection cavity.

[0020] Furthermore, it also includes two reset strips, which are arranged along the vertical direction of the base and whose upper ends are respectively fixed on both sides of the upper template, and the two reset strips are respectively arranged opposite to the two support strips and their sides close to the upper template are provided with accommodating grooves; the two support strips can extend into the two accommodating grooves respectively; the reset strips corresponding to the two sides of the accommodating grooves can contact the corresponding support blocks to push the support blocks into the second grooves.

[0021] The further beneficial effect of adopting the above method is: by utilizing the two reset strips to contact the two support blocks respectively, and because the two limit blocks can be respectively overlapped on the top ends of the two linkage strips, the support blocks can be retreated into the second groove before the upper template and the lower template are closed, thereby completing the closing of the lower template and the base.

[0022] Furthermore, it also includes a core pulling, wherein the top surface of the lower template is provided with a slide groove that penetrates the groove, and the slide groove penetrates the side surface of the lower template; the core pulling slides in the slide groove from close to the groove to away from the groove; the injection molding cavity is the gap between the upper template, the groove, the core and the core pulling.

[0023] Furthermore, it also includes a fixing column, the core pulling is provided with fixing holes running through both ends thereof; the top end of the upper template is provided with a fixing groove which can be relatively connected with the core pulling; the top end of the fixing column is fixed to the bottom end of the upper template and it can pass through the fixing hole and be fixed in the fixing groove.

[0024] Furthermore, the axis of the fixing column and the axis of the fixing hole are arranged at a preset angle with a vertical line of the base. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a three-dimensional structural schematic diagram of an injection mold for secondary ejection and anti-collision ejector pin of the present invention;

[0026] Figure 2 It is a side structural schematic diagram of an injection mold for secondary ejection and anti-collision ejector pin of the present invention;

[0027] Figure 3 It is a schematic diagram of the top view of the structure of an injection mold for secondary ejection and anti-collision ejector pin of the present invention;

[0028] Figure 4 for Figure 3 Schematic diagram of the cross-sectional structure of the mold at AA;

[0029] Figure 5 for Figure 3 Schematic diagram of the cross-sectional structure of the mold opening at AA;

[0030] Figure 6 for Figure 3 Schematic diagram of the cross-sectional structure of one-time ejection at AA;

[0031] Figure 7 for Figure 3 Schematic diagram of the cross-sectional structure of the secondary ejection at AA;

[0032] Figure 8 for Figure 3 Schematic diagram of the cross-sectional structure of the first mold closing action at AA;

[0033] Fig. 9 for Figure 3 Schematic diagram of the cross-sectional structure of the second touching action at AA;

[0034] Fig.10 for Figure 3 Schematic diagram of the cross-sectional structure of the third touching action at AA;

[0035] Fig.11 for Figure 3 Schematic diagram of the cross-sectional structure after the touching action at AA is completed.

[0036] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0037] 1. Lower template, 11. Groove, 12. Core hole, 13. Needle hole, 14. First groove, 15. Second groove, 2. Upper template, 21. Casting hole, 22. Mounting groove, 3. Base, 31. Ejector hole, 32. Needle hole, 33. Lower plate, 331. Lifting groove, 34. Upper plate, 4. Ejector plate, 5. Linkage part, 51. Linkage strip, 511. Slot, 52. Block, 6. Support part, 61. Support strip, 62. Support block, 7. Core, 71. First movable core block, 711. Accommodating groove, 72. Second movable core block, 73. Fixed core block, 74. Bump, 8. Ejector, 9. Ejector rod, 10. Injection molded product, 16. Limit block, 17. Reset strip, 18. Core pulling, 19. Fixed column. DETAILED DESCRIPTION

[0038] The principles and features of the present invention are described below in conjunction with the accompanying drawings. The examples given are only used to explain the present invention and are not used to limit the scope of the present invention.

[0039] like Figure 1 and Figure 4 As shown, an injection mold for secondary ejection and anti-collision ejector pins includes a lower mold plate 1 and an upper mold plate 2. The top surface of the lower mold plate 1 is provided with a groove 11; the upper mold plate 2 is placed on the lower mold plate 1 and is provided with a pouring hole 21 connected to the groove 11; and further includes: a base 3, an ejector plate 4, a linkage member 5 and a support member 6.

[0040] The lower template 1 is placed on the base 3; a mold core 7 is fixed on the top of the base 3 and a lifting area is provided inside the base 3 with two sides passing through, an ejection hole 31 connected to the lifting area is provided at the bottom, and a needle hole 32 connected to the lifting area is provided at the top; a core hole 12 and a needle hole 13 arranged opposite to the needle hole 32 are provided at the bottom of the groove 11; the mold core 7 extends into the groove 11 through the core hole 12 and defines an injection cavity between the mold core 7, the groove 11 and the upper template 2; the ejector plate 4 is placed in the lifting area, and its top is fixed An ejector pin 8 is provided which extends into the needle hole 32 and the needle hole 13 and is used for ejecting the finished injection molded product; an ejector rod 9 is slidably provided in the ejector hole 31 and can push the ejector plate 4 to move upward; a linkage member 5 and a support member 6, wherein the lower end of the linkage member 5 is fixed to the side wall of the ejector plate 4, and the lower end of the support member 6 is fixed to the side wall of the base 3; the upper end of the linkage member 5 and the upper end of the support member 6 can be switched to be connected with the lower template 1 to separate the mold core 7 from the finished injection molded product 10, and after the lower template 1 is disconnected from the linkage member 5, the lower template 1 is connected to be positioned and supported.

[0041] like Figure 1 and Figure 2As shown, in some specific embodiments, the base 3 may include a lower plate 33 and an upper plate 34, the top of the lower plate 33 is provided with a lifting groove 331 running through both sides thereof; the upper plate 34 is placed on the lower plate 33; the bottom end of the mold core 7 is fixed to the top of the upper plate 34; the lifting area is the lifting groove 331; the ejection hole 31 is provided on the lower plate 33; the needle hole 32 is provided on the upper plate 34; and the lower template 1 is placed on the upper plate 34.

[0042] like Figure 7 and Figure 8 As shown, in some specific embodiments, the mold core 7 may include a first movable mold core block 71, a second movable mold core block 72 and a fixed mold core block 73, the first movable mold core block 71 is placed in the mold groove 11 and a receiving groove 711 opposite to the core hole 12 is provided at its bottom end, and an outlet hole connected to the receiving groove 711 is provided on its side wall; the second movable mold core block 72 is placed at the bottom of the mold groove 11 and is located in the receiving groove 711, a protrusion 74 is fixed on the side of the second movable mold core block 72 corresponding to the outlet hole, and the side away from the outlet hole is arranged from top to bottom in sequence. A first inclined surface is arranged to be inclined toward the direction of the outlet hole; the bottom end of the fixed core block 73 is fixed to the top end of the base 3 and extends into the accommodating groove 711 through the core hole 12; the side of the fixed core block 73 close to the first movable core block 71 is a second inclined surface arranged to be inclined from bottom to top toward the direction away from the outlet hole; the second inclined surface is in sliding contact with the first inclined surface to move downward with the lower mold plate 1 and to link the first movable core block 71 and the second movable core block 72 to move downward so that the protrusion 74 extends out of the outlet hole and is placed above the pinhole 13.

[0043] like Figure 7 As shown, in some specific embodiments, the linkage member 5 includes two linkage strips 51 and two clamping blocks 52. The two linkage strips 51 are arranged along the vertical direction of the base 3 and their lower ends are respectively fixed on both sides of the ejector plate 4, and the upper ends of the two linkage strips 51 are respectively provided with clamping grooves 511; first grooves 14 are respectively provided on both sides of the lower template 1, and the two first grooves 14 are respectively arranged opposite to the two linkage strips 51; the two clamping blocks 52 are respectively elastically connected to the bottom of the two first grooves 14 through springs and can extend out of the corresponding first grooves 14 and into the corresponding clamping grooves 511 to realize the detachable connection between the linkage strip 51 and the upper template 2.

[0044] like Figure 5 As shown, in some specific embodiments, two limit blocks 16 may also be included, and mounting grooves 22 are provided on both sides of the upper template 2, and the two mounting grooves 22 are respectively arranged opposite to the two linkage strips 51; the two limit blocks 16 are elastically connected to the bottom of the two mounting grooves 22 through springs and can extend out of the corresponding mounting grooves 22 and overlap the top of the corresponding linkage strip 51.

[0045] like Figure 6As shown, in some specific embodiments, the support member 6 may include two support strips 61 and two support blocks 62, the two support strips 61 are arranged along the vertical direction of the base 3 and their lower ends are respectively fixed on both sides of the base 3; second grooves 15 are provided on both sides of the lower template 1, and the two second grooves 15 are respectively arranged opposite to the two support strips 61; the two support blocks 62 are elastically connected to the bottom of the two second grooves 15 by springs and can extend out of the corresponding second grooves 15 and overlap the top of the corresponding support strips 61 to realize the detachable connection between the support strips 61 and the upper template 2.

[0046] like Figure 1 and Figure 4 As shown, in some specific embodiments, two reset strips 17 may also be included, the two reset strips 17 are arranged along the vertical direction of the base 3 and the upper ends thereof are respectively fixed on both sides of the upper template 2, the two reset strips 17 are respectively arranged opposite to the two support strips 61 and the sides thereof close to the upper template 2 are provided with accommodating grooves; the two support strips 61 can extend into the two accommodating grooves respectively; the reset strips 17 on both sides of the corresponding accommodating grooves can contact the corresponding support blocks 62 to push the support blocks 62 into the second groove 15.

[0047] like Figure 5 and Figure 6 As shown, in some specific embodiments, a core puller 18 is also included. The top surface of the lower template 1 is provided with a slide groove that penetrates the groove 11, and the slide groove penetrates the side surface of the lower template 1; the core puller 18 slides in the slide groove from close to the groove 11 to away from the groove 11; the injection cavity is the gap between the upper template 2, the groove 11, the core 7 and the core puller 18.

[0048] like Figure 4 and Figure 5 As shown, in some specific embodiments, a fixing column 19 is also included, and the core pulling 18 is provided with fixing holes running through both ends thereof; the top end of the upper template 2 is provided with a fixing groove that can be relatively connected to the core pulling 18; the top end of the fixing column 19 is fixed to the bottom end of the upper template 2 and it can pass through the fixing hole and be fixed in the fixing groove.

[0049] Specifically, the axis of the fixing column 19 and the axis of the fixing hole are both arranged at a preset angle with the vertical line of the base 3 .

[0050] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An injection mold for secondary ejection and anti-collision ejector pins, comprising a lower mold plate (1) and an upper mold plate (2), wherein the top surface of the lower mold plate (1) is provided with a mold groove (11); the upper mold plate (2) is placed on the lower mold plate (1) and is provided with a pouring hole (21) connected to the mold groove (11); characterized in that: Also includes: A base (3), the lower template (1) being placed on the base (3); a mold core (7) being fixed on the top of the base (3), and a lifting zone with two sides passing through the base (3); an ejection hole (31) being provided at the bottom thereof and communicating with the lifting zone, and a needle hole (32) being provided at the top thereof and communicating with the lifting zone; a core hole (12) and a needle hole (13) being arranged opposite to the needle hole (32) being provided at the bottom of the groove (11); the mold core (7) passing through the core hole (12) and extending into the groove (11), and defining an injection molding cavity between the mold core (7), the groove (11) and the upper template (2); An ejector plate (4), the ejector plate (4) being placed in the lifting area, and having an ejector pin (8) fixed on its top end, which extends into the needle hole (32) and the needle hole (13) and is capable of ejecting the injection molded product (10); an ejector rod (9) sliding in the ejection hole (31) and capable of pushing the ejector plate (4) to move upward; A linkage member (5) and a support member (6), wherein the lower end of the linkage member (5) is fixed to the side wall of the ejector plate (4), and the lower end of the support member (6) is fixed to the side wall of the base (3); the upper end of the linkage member (5) and the upper end of the support member (6) can be switched to be connected with the lower template (1) so that the mold core (7) is separated from the injection molded product (10); and after the lower template (1) is disconnected from the linkage member (5), the lower template (1) is connected to be positioned and supported.

2. The injection mold for secondary ejection and anti-collision ejector pin according to claim 1, characterized in that: The base (3) comprises a lower plate (33) and an upper plate (34); the top of the lower plate (33) is provided with a lifting groove (331) passing through both sides thereof; the upper plate (34) is placed on the lower plate (33); the bottom end of the mold core (7) is fixed to the top of the upper plate (34); the lifting area is the lifting groove (331); the ejection hole (31) is provided on the lower plate (33); the needle hole (32) is provided on the upper plate (34); and the lower template (1) is placed on the upper plate (34).

3. The injection mold for secondary ejection and anti-collision ejector pin according to claim 1, characterized in that: The mold core (7) comprises a first movable mold core block (71), a second movable mold core block (72) and a fixed mold core block (73); the first movable mold core block (71) is placed in the mold groove (11) and a receiving groove (711) is provided at its bottom end opposite to the core hole (12); and an outlet hole connected to the receiving groove (711) is provided on its side wall; the second movable mold core block (72) is placed at the bottom of the mold groove (11) and is located in the receiving groove (711); a protrusion (74) is fixed on the side of the second movable mold core block (72) corresponding to the outlet hole, and the side away from the outlet hole is in a direction from top to bottom toward the outlet hole. A first inclined surface is arranged obliquely; the bottom end of the fixed mold core block (73) is fixed to the top end of the base (3) and extends through the core hole (12) into the accommodating groove (711); the side of the fixed mold core block (73) close to the first movable mold core block (71) is a second inclined surface arranged obliquely from bottom to top in a direction away from the outlet hole; the second inclined surface is in sliding contact with the first inclined surface so as to move downward with the lower mold plate (1) to link the first movable mold core block (71) and the second movable mold core block (72) to move downward so that the protrusion (74) extends out of the outlet hole and is placed above the pinhole (13).

4. The injection mold for secondary ejection and anti-collision ejector pin according to claim 1, characterized in that: The linkage member (5) comprises two linkage strips (51) and two clamping blocks (52); the two linkage strips (51) are arranged along the vertical direction of the base (3) and their lower ends are respectively fixed to the two sides of the ejector plate (4); the upper ends of the two linkage strips (51) are provided with clamping grooves (511); the two sides of the lower template (1) are provided with first grooves (14), and the two first grooves (14) are respectively arranged opposite to the two linkage strips (51); the two clamping blocks (52) are respectively elastically connected to the groove bottoms of the two first grooves (14) through springs and can extend out of the corresponding first grooves (14) and into the corresponding clamping grooves (511) to realize the detachable connection between the linkage strips (51) and the upper template (2).

5. The injection mold for secondary ejection and anti-collision ejector pin according to claim 4, characterized in that: It also includes two limit blocks (16), and mounting grooves (22) are provided on both sides of the upper template (2), and the two mounting grooves (22) are respectively arranged opposite to the two linkage strips (51); the two limit blocks (16) are elastically connected to the bottoms of the two mounting grooves (22) through springs and can extend out of the corresponding mounting grooves (22) to overlap the top of the corresponding linkage strip (51).

6. The injection mold for secondary ejection and anti-collision ejector pin according to claim 1, characterized in that: The support member (6) comprises two support strips (61) and two support blocks (62); the two support strips (61) are arranged along the vertical direction of the base (3) and their lower ends are respectively fixed on both sides of the base (3); second grooves (15) are provided on both sides of the lower template (1), and the two second grooves (15) are respectively arranged opposite to the two support strips (61); the two support blocks (62) are elastically connected to the groove bottoms of the two second grooves (15) through springs and can extend out of the corresponding second grooves (15) to overlap the top ends of the corresponding support strips (61) to realize the detachable connection between the support strips (61) and the upper template (2).

7. The injection mold for secondary ejection and anti-collision ejector pin according to claim 6, characterized in that: It also includes two reset strips (17), the two reset strips (17) are arranged along the vertical direction of the base (3) and the upper ends of the reset strips (17) are respectively fixed on the two sides of the upper template (2), the two reset strips (17) are respectively arranged opposite to the two support strips (61) and the sides close to the upper template (2) are provided with accommodating grooves; the two support strips (61) can extend into the two accommodating grooves respectively; the reset strips (17) corresponding to the two sides of the accommodating grooves can contact the corresponding support blocks (62) to push the support blocks (62) into the second groove (15).

8. The injection mold for secondary ejection and anti-collision ejector pin according to claim 1, characterized in that: It also includes a core puller (18), wherein the top surface of the lower template (1) is provided with a slide groove that penetrates the groove (11), and the slide groove penetrates the side surface of the lower template (1); the core puller (18) slides in the slide groove from a direction close to the groove (11) to a direction away from the groove (11); the injection molding cavity is the gap between the upper template (2), the groove (11), the core (7) and the core puller (18).

9. The injection mold for secondary ejection and anti-collision ejector pin according to claim 8, characterized in that: It also includes a fixing column (19), the core puller (18) is provided with fixing holes running through both ends thereof; the top end of the upper template (2) is provided with a fixing groove which can be relatively connected to the core puller (18); the top end of the fixing column (19) is fixed to the bottom end of the upper template (2) and can pass through the fixing hole and be fixed in the fixing groove.

10. The injection mold for secondary ejection and anti-collision ejector pin according to claim 9, characterized in that: The axis of the fixing column (19) and the axis of the fixing hole are both arranged at a preset angle with a vertical line of the base (3).

Images