PIN needle interchanging insert injection mold

Abstract

The application discloses a PIN needle interchanging insert mould, which comprises a mould core, a containing hole penetrating through the upper and lower ends of the mould core, a PIN needle support arranged in the containing hole, a PIN needle fixture and a PIN needle push plate assembly arranged in the PIN needle support, the upper end of the PIN needle push plate assembly being used for abutting against the lower end of the PIN needle, a first driving plate arranged below the mould core and capable of lifting and moving, a push plate supporting rod fixed on the first driving plate, when the PIN needle is inserted into the PIN needle fixture, the first driving plate drives the push plate supporting rod to descend to remove the thrust on the PIN needle push plate assembly, the PIN needle pushes the PIN needle push plate assembly downwards, when the upper mould is combined with the mould core, the first driving plate drives the push plate supporting rod to ascend and applies the thrust on the PIN needle push plate assembly, the PIN needle push plate assembly jacks up the PIN needle, and the upper end of the PIN needle is inserted into the needle hole of the upper mould. The application is helpful for inserting the PIN needle into place and can avoid the PIN needle from being inserted into place and being damaged, thereby improving the injection quality.

Description

TECHNICAL FIELD

[0001] The present application relates to interchangeable insert molds, in particular to a PIN needle interchangeable insert injection mold. BACKGROUND

[0002] In the prior art, due to the influence of product shape and other factors, many molds adopt the application mode of interchangeable inserts. Taking products with PIN needles as an example, the upper and lower ends of the PIN needles generally need to pass through the upper and lower sides of the product and be exposed, so as to facilitate plugging and welding in actual application. Before the upper and lower molds of the mold are closed, the PIN needles need to be installed in place. Because the length of the PIN needle inserted into the fixed part of the lower mold is relatively small, when the mold is closed, the upper end of the PIN needle is not easy to be inserted into the front mold, which easily causes the PIN needle to be inserted and damaged. Not only does this affect the forming quality of the product, but also the scrap rate is high. SUMMARY

[0003] The technical problem to be solved by the present application is to provide a PIN needle interchangeable insert injection mold which helps to insert the PIN needle in place and avoids the PIN needle from being inserted and damaged, thereby improving the injection quality.

[0004] To solve the above technical problems, the present application adopts the following technical scheme.

[0005] A PIN needle interchangeable insert injection mold comprises a mold core, wherein the mold core is provided with a receiving hole penetrating through the upper and lower ends thereof, a PIN needle support is arranged in the receiving hole, a PIN needle jig for inserting a PIN needle is arranged in the PIN needle support, and a PIN needle push plate assembly which can slide up and down is arranged in the PIN needle support. The upper end of the PIN needle push plate assembly is used for abutting against the lower end of the PIN needle. A first driving plate which can move up and down is arranged below the mold core. A push plate support rod is fixed on the first driving plate. The upper end of the push plate support rod abuts against the lower end of the PIN needle push plate assembly. When the PIN needle is inserted into the PIN needle jig, the first driving plate drives the push plate support rod to descend to remove the pushing force on the PIN needle push plate assembly. The PIN needle pushes the PIN needle push plate assembly downward. When the upper mold is closed relative to the mold core, the first driving plate drives the push plate support rod to ascend and applies a pushing force to the PIN needle push plate assembly. The PIN needle push plate assembly jacks up the PIN needle until the upper end of the PIN needle is inserted into the pin hole of the upper mold.

[0006] Preferably, the mold comprises a lower mold. The mold core is arranged at the upper end of the lower mold. The first driving plate is arranged below the lower mold.

[0007] Preferably, the PIN pin jig is plate-shaped, the PIN pin push plate assembly comprises oppositely arranged first and second push plates, the first and second push plates are respectively slidably arranged on the two sides of the PIN pin jig, the upper end of the first push plate and the upper end of the second push plate are respectively formed with first and second I-shaped portions, the limiting blocks formed on the two sides of the PIN pin jig are respectively arranged in the lateral sockets of the first and second I-shaped portions, and the opening width of the lateral sockets is greater than the up-down width of the limiting blocks.

[0008] Preferably, the side of the first push plate is provided with a stepped splicing groove, the side of the second push plate is formed with a stepped splicing portion, and the splicing portion is oppositely combined with the splicing groove.

[0009] Preferably, the upper end of the PIN pin jig is formed with a jig main body protruding outward, a plurality of PIN pin insertion grooves are respectively arranged on the front and rear sides of the jig main body, and the PIN pin insertion grooves on the front and rear sides are respectively aligned with the upper end of the first I-shaped portion and the upper end of the second I-shaped portion.

[0010] Preferably, the mold core is provided with a positioning assembly for positioning the PIN pin support.

[0011] Preferably, the positioning assembly comprises positioning sliders respectively arranged on the left and right sides of the PIN pin support, one end of the positioning slider towards the PIN pin support is formed with a positioning end head, the left and right sides of the PIN pin support are respectively formed with positioning grooves, the positioning end head and the positioning groove are one-to-one corresponding, the left and right sides of the mold core are respectively fixed with end plates, and the spring is clamped between the end plate and the positioning slider, and the positioning end head is clamped in the positioning groove by the elastic force of the spring.

[0012] Preferably, the upper end corner of the positioning end head is formed with a rounded corner.

[0013] Preferably, the lower end of the two positioning sliders is respectively formed with oppositely arranged butt end heads, a V-shaped opening downward is formed between the two butt end heads, a second driving plate is arranged below the first driving plate and can move up and down, a jacking push rod is fixed on the second driving plate, a wedge-shaped portion is formed at the upper end of the jacking push rod, the wedge-shaped portion is arranged in alignment with the V-shaped opening, when the second driving plate drives the jacking push rod to move up, the jacking push rod first enters the V-shaped opening and drives the two butt end heads to move away from each other, at the same time, the two positioning end heads are separated from the two positioning grooves, the jacking push rod jacks up the bottom of the PIN pin support, so that the PIN pin support is stretched out upward from the accommodating hole.

[0014] Preferably, two jig positioning rods are arranged on the PIN pin support, and the left and right side edges of the PIN pin jig are respectively provided with a jig clamping groove.

[0015] In the PIN pin interchangeable insert insertion mold, the mold core is installed on the preset lower mold. Before the upper and lower molds are closed, the first driving plate drives the push plate support rod to descend to remove the pushing force on the PIN pin push plate assembly. Then, the PIN pins are inserted into the PIN pin jig by using the preset feeding mechanism clamping the PIN pins. At the same time, the PIN pins push the PIN pin push plate assembly downward. Then, the preset upper mold is closed relative to the mold core. After the mold is closed, the upper end of the PIN pin does not contact the upper mold, so that the PIN pin is not bent due to the shorter lower end of the PIN pin and the misalignment with the hole position of the upper mold. Then, the first driving plate drives the push plate support rod to ascend, and at the same time, the PIN pin push plate assembly is pushed. The PIN pin push plate assembly pushes the PIN pin upward until the upper end of the PIN pin is inserted into the needle hole of the upper mold. After the product is injection molded, the upper and lower ends of the PIN pin are inserted into the upper and lower sides of the product. Compared with the prior art, the PIN pin is inserted into the position, and the PIN pin is not damaged, thereby improving the injection molding quality. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is a perspective view of the PIN pin interchangeable insert insertion mold of the present application;

[0017] Figure 2 It is a partial exploded view of the PIN pin interchangeable insert insertion mold of the present application;

[0018] Figure 3 It is an internal structure of the PIN pin interchangeable insert insertion mold of the present application Figure 1 ;

[0019] Figure 4 It is an internal structure of the PIN pin interchangeable insert insertion mold of the present application Figure 2 ;

[0020] Figure 5 It is an exploded view of Figure 4 ;

[0021] Figure 6 It is an exploded view of the PIN pin support, the PIN pin jig, and the PIN pin push plate assembly;

[0022] Figure 7 It is a sectional view of the PIN pin interchangeable insert insertion mold of the present application;

[0023] Figure 8 It isFigure 7 Enlarged view of portion A. DETAILED DESCRIPTION

[0024] The application will be described in more detail below with reference to the drawings and embodiments.

[0025] The application discloses a PIN needle interchanging insert molding die, which combines Figures 1 to 8 As shown in the figure, it comprises a mold core 1, a containing hole 2 is opened through the upper and lower ends of the mold core 1, a PIN needle support 3 is arranged in the containing hole 2, a PIN needle jig 4 for inserting a PIN needle 100 and a PIN needle push plate assembly 5 which can slide up and down are arranged in the PIN needle support 3, the upper end of the PIN needle push plate assembly 5 is used for abutting against the lower end of the PIN needle 100, a first driving plate 6 which can move up and down is arranged below the mold core 1, a push plate supporting rod 60 is fixed on the first driving plate 6, the upper end of the push plate supporting rod 60 abuts against the lower end of the PIN needle push plate assembly 5, when the PIN needle 100 is inserted into the PIN needle jig 4, the first driving plate 6 drives the push plate supporting rod 60 to descend to remove the pushing force on the PIN needle push plate assembly 5, the PIN needle 100 pushes the PIN needle push plate assembly 5 downward, when the mold core 1 is combined with a preset upper mold, the first driving plate 6 drives the push plate supporting rod 60 to ascend and applies a pushing force on the PIN needle push plate assembly 5, the PIN needle push plate assembly 5 lifts the PIN needle 100 until the upper end of the PIN needle 100 is inserted into the needle hole of the upper mold.

[0026] In the above structure, the mold core 1 is installed on a preset lower mold, before the upper and lower molds are combined, the first driving plate 6 drives the push plate supporting rod 60 to descend to remove the pushing force on the PIN needle push plate assembly 5, then a preset feeding mechanism for clamping the PIN needle 100 is used to insert multiple PIN needles 100 into the PIN needle jig 4, while the PIN needles 100 are inserted into the PIN needle jig 4, the PIN needles 100 push the PIN needle push plate assembly 5 downward, then the preset upper mold is combined with the mold core 1, after the combination, the upper end of the PIN needle 100 does not contact the upper mold, so that the PIN needle bending and other situations caused by the short insertion of the lower end of the PIN needle 100 and the misalignment with the hole position of the upper mold are avoided, then the first driving plate 6 drives the push plate supporting rod 60 to ascend and applies a pushing force on the PIN needle push plate assembly 5, the PIN needle push plate assembly 5 lifts the PIN needle 100 upward until the upper end of the PIN needle 100 is inserted into the needle hole of the upper mold, when the product 101 is injection molded, the upper and lower ends of the PIN needle 100 are inserted into the upper and lower sides of the product 101. Compared with the prior art, the application helps to insert the PIN needle in place and avoid the PIN needle insertion failure, thereby improving the injection molding quality.

[0027] To realize the mold closing, the embodiment comprises a lower mold 7, the mold core 1 is arranged at the upper end of the lower mold 7, and the first driving plate 6 is arranged below the lower mold 7.

[0028] In combination Figures 4 to 6 As shown in the figure, in the embodiment, the PIN needle jig 4 is in the form of a plate, the PIN needle push plate assembly 5 comprises a first push plate 50 and a second push plate 51 arranged oppositely, the first push plate 50 and the second push plate 51 are respectively arranged on the two sides of the PIN needle jig 4 in a sliding manner, the upper end of the first push plate 50 and the upper end of the second push plate 51 are respectively formed with a first I-shaped portion 52 and a second I-shaped portion 53, and the limiting blocks 40 formed on the two sides of the PIN needle jig 4 are respectively arranged in the lateral sockets 54 of the first I-shaped portion 52 and the second I-shaped portion 53, and the opening width of the lateral sockets 54 is greater than the up-down width of the limiting blocks 40.

[0029] In the above structure, the first push plate 50 and the second push plate 51 are respectively arranged on the front and rear sides of the PIN needle jig 4, and the first push plate 50 and the second push plate 51 are both in sliding cooperation with the PIN needle jig 4, so that the first push plate 50 and the second push plate 51 can synchronously lift the front and rear rows of PIN needles 100.

[0030] To realize the synchronous lifting movement of the first push plate 50 and the second push plate 51, in the embodiment, a stepped splicing groove 55 is formed in the side of the first push plate 50, a stepped splicing portion 56 is formed in the side of the second push plate 51, and the splicing portion 56 is oppositely spliced with the splicing groove 55. Among them, the opposite sides of the first push plate 50 and the second push plate 51 are spliced in the form of a stepped portion and a stepped groove, which can ensure the good combination of the first push plate 50 and the second push plate 51, and on this basis, the up-down length of the first push plate 50 is greater than the length of the second push plate 51, and when the push plate supporting rod 60 lifts the PIN needle push plate assembly 5, only a pushing force needs to be applied to the lower end of the first push plate 50.

[0031] In combination Figures 5 to 8As shown, in the embodiment, the upper end of the PIN needle jig 4 is formed with a jig body 41 protruding outward, and a plurality of PIN needle slots 410 are formed on the front and back sides of the jig body 41, which are aligned with the upper end of the first work section 52 and the upper end of the second work section 53 respectively. Among them, the main function of the jig body 41 is to pass through the PIN needle 100, and the PIN needle slot 410 is a through slot. On this basis, because the front and back sides of the jig body 41 protrude outward, the protruding part of the jig body 41 can better align and match the first work section 52 and the second work section 53, and at the same time provide a sliding space for the first work section 52 and the second work section 53 to lift the PIN needle 100.

[0032] On this basis, because the opening width of the lateral bayonet 54 is greater than the upper and lower width of the limiting block 40, the first work section 52 and the second work section 53 can slide a certain distance relative to the PIN needle jig 4 up and down, until the limiting block 40 abuts against the edge of the lateral bayonet 54, thereby limiting the movement stroke of the PIN needle push plate assembly 5.

[0033] As a preferred mode, the mold core 1 is provided with a positioning assembly 8 for positioning the PIN needle support 3.

[0034] In combination Figures 3 to 6 As shown, the positioning assembly 8 includes positioning sliders 80 arranged on the left and right sides of the PIN needle support 3, one end of the positioning slider 80 towards the PIN needle support 3 is formed with a positioning end 81, and the left and right sides of the PIN needle support 3 are respectively formed with positioning grooves 30, the positioning end 81 corresponds to the positioning groove 30 one by one, and the left and right sides of the mold core 1 are respectively fixed with end plates 82, and the spring 83 is clamped between the end plate 82 and the positioning slider 80. The positioning end 81 is clamped in the positioning groove 30 by the elastic force of the spring 83.

[0035] Further, the upper corner of the positioning end 81 is formed with a rounded corner 810.

[0036] In the above structure, when the PIN needle support 3 is inserted into the accommodating hole 2, the left and right corner of the PIN needle support 3 abuts against the rounded corner 810 of the two positioning ends 81, and at the same time drives the left and right two positioning sliders 80 to separate relatively, and the PIN needle support 3 enters between the two positioning sliders 80. After the positioning end 81 is aligned with the positioning groove 30, the spring 83 exerts an elastic force to drive the positioning end 81 to be clamped in the positioning groove 30, thereby positioning the PIN needle support 3.

[0037] On this basis, the embodiment also has a mechanism for ejecting the PIN pin support 3, combined with Figures 2 to 6 As shown, the lower ends of the two positioning sliding blocks 80 are respectively formed with oppositely arranged butt ends 84, and a V-shaped opening 85 downwardly opening is formed between the two butt ends 84. The lower side of the first driving plate 6 is provided with a second driving plate 9 capable of lifting movement. The second driving plate 9 is fixed with a jacking push rod 90. The upper end of the jacking push rod 90 is formed with a wedge-shaped part 91. The wedge-shaped part 91 is arranged in alignment with the V-shaped opening 85. When the second driving plate 9 drives the jacking push rod 90 to lift, the jacking push rod 90 first enters the V-shaped opening 85 and drives the two butt ends 84 to move away from each other, while the two positioning ends 81 are separated from the two positioning grooves 30, respectively. The jacking push rod 90 lifts the bottom of the PIN pin support 3, so that the PIN pin support 3 is stretched upward from the accommodating hole 2.

[0038] Based on the above structure, after the workpiece 101 and the PIN pin 100 are injection molded, the mold is opened. The product ejector pin pre-penetrating in the mold core 1 lifts the workpiece 101, so that the workpiece 101 is first separated from the mold core 1. Then the second driving plate 9 drives the jacking push rod 90 to lift. The jacking push rod 90 enters the V-shaped opening 85, and then drives the two butt ends 84 to move away from each other. Correspondingly, the two positioning ends 81 are separated from the two positioning grooves 30, respectively, so as to remove the limiting effect on the PIN pin support 3. The jacking push rod 90 lifts the bottom of the PIN pin support 3. At this time, the PIN pin support 3 and the workpiece 101 are synchronously ejected. Based on the above asynchronous ejection action, the product can be prevented from being adhered between the mold core 1 and the PIN pin support 3 when the mold is opened, and the injection quality of the product is further improved.

[0039] In practical application, please refer to Figure 5 The embodiment includes two parallel push plate supporting rods 60. The two push plate supporting rods 60 are symmetrically arranged on the two sides of the jacking push rod 90. The two push plate supporting rods 60 can stably lift the first push plate 50.

[0040] In order to fix the relative position of the PIN pin support 3 and the PIN pin jig 4, in the embodiment, two jig positioning rods 31 are arranged on the PIN pin support 3. The left and right side edges of the PIN pin jig 4 are respectively formed with jig clamping grooves 42. The two jig positioning rods 31 respectively penetrate through the two jig clamping grooves 42.

[0041] The above description is only the preferred embodiment of the present application and is not used to limit the present application. Any modification, equivalent replacement or improvement made within the technical scope of the present application shall be included in the protection scope of the present application.

Claims

1. A PIN needle interchangeable insert insertion mold, characterized in that: The invention comprises a mold core (1), wherein the mold core (1) is provided with a receiving hole (2) penetrating the upper and lower ends thereof, wherein a PIN needle support (3) is provided in the receiving hole (2), wherein a PIN needle fixture (4) for inserting a PIN needle (100) and a PIN needle push plate assembly (5) which can slide up and down are provided in the PIN needle support (3), wherein the upper end of the PIN needle push plate assembly (5) is used to abut against the lower end of the PIN needle (100), and a first driving plate (6) which can move upward and downward is provided below the mold core (1), wherein a push plate support rod (60) is fixed on the first driving plate (6), and the upper end of the push plate support rod (60) is in contact with the PIN needle push plate assembly (5). The lower end of the push plate is in abutment with the PIN pin (100), and when the PIN pin (100) is inserted into the PIN pin fixture (4), the first driving plate (6) drives the push plate support rod (60) to descend to remove the thrust on the PIN pin push plate assembly (5), and the PIN pin (100) pushes the PIN pin push plate assembly (5) downward. When the preset upper mold is closed relative to the mold core (1), the first driving plate (6) drives the push plate support rod (60) to rise and applies thrust to the PIN pin push plate assembly (5), and the PIN pin push plate assembly (5) lifts the PIN pin (100) until the upper end of the PIN pin (100) is inserted into the pinhole of the upper mold.

2. The PIN needle interchangeable insert assembly mold according to claim 1, characterized in that: It comprises a lower mold (7), the mold core (1) is arranged at the upper end of the lower mold (7), and the first driving plate (6) is arranged below the lower mold (7).

3. The PIN pin interchangeable insert assembly mold according to claim 1, characterized in that: The PIN needle fixture (4) is plate-shaped, and the PIN needle push plate assembly (5) includes a first push plate (50) and a second push plate (51) that are arranged opposite to each other. The first push plate (50) and the second push plate (51) are respectively slidably arranged on both sides of the PIN needle fixture (4). The upper end of the first push plate (50) and the upper end of the second push plate (51) are respectively formed with a first I-shaped portion (52) and a second I-shaped portion (53). The limit blocks (40) formed on both sides of the PIN needle fixture (4) are respectively arranged in the side bayonet (54) of the first I-shaped portion (52) and the second I-shaped portion (53). The opening width of the side bayonet (54) is greater than the upper and lower widths of the limit blocks (40).

4. The PIN needle interchangeable insert assembly mold according to claim 3, characterized in that: A step-shaped splicing groove (55) is formed on the side of the first push plate (50), and a step-shaped splicing portion (56) is formed on the side of the second push plate (51), and the splicing portion (56) is spliced ​​with the splicing groove (55) in a relative manner.

5. The PIN needle interchangeable insert assembly mold according to claim 3, characterized in that: The upper end of the PIN needle jig (4) is formed with a jig body (41) protruding outward, and the front and rear sides of the jig body (41) are respectively provided with a plurality of PIN needle slots (410), and the PIN needle slots (410) on the front and rear sides are respectively aligned with the upper end of the first I-shaped portion (52) and the upper end of the second I-shaped portion (53).

6. The PIN needle interchangeable insert assembly mold according to claim 1, characterized in that: A positioning component (8) for positioning the PIN needle support (3) is provided in the mold core (1).

7. The PIN needle interchangeable insert assembly mold according to claim 6, characterized in that: The positioning assembly (8) includes positioning sliders (80) respectively arranged on the left and right sides of the PIN needle support (3), a positioning end (81) is formed on one end of the positioning slider (80) facing the PIN needle support (3), and positioning grooves (30) are respectively formed on the left and right sides of the PIN needle support (3), and the positioning end (81) corresponds to the positioning groove (30) one by one. End plates (82) are respectively fixed on the left and right sides of the mold core (1), and a spring (83) is sandwiched between the end plate (82) and the positioning slider (80), and the elastic force applied by the spring (83) drives the positioning end (81) to be clamped in the positioning groove (30).

8. The PIN needle interchangeable insert assembly mold according to claim 7, characterized in that: A rounded corner portion (810) is formed at the upper corner of the positioning end head (81).

9. The PIN pin interchangeable insert assembly mold according to claim 7, characterized in that: The lower ends of the two positioning sliders (80) are respectively formed with oppositely arranged docking ends (84), and a V-shaped opening (85) with an opening facing downward is formed between the two docking ends (84). A second driving plate (9) that can move up and down is provided below the first driving plate (6), and a lifting push rod (90) is fixed on the second driving plate (9). The upper end of the lifting push rod (90) is formed with a wedge-shaped portion (91), and the wedge-shaped portion (91) is aligned with the V-shaped opening (85). When the second driving plate (9) drives the lifting push rod (90) to move upward, the lifting push rod (90) first enters the V-shaped opening (85) and drives the two docking ends (84) away from each other, and at the same time, the two positioning ends (81) are respectively separated from the two positioning grooves (30), and the lifting push rod (90) lifts the bottom of the PIN needle support (3) so that the PIN needle support (3) extends upward from the accommodating hole (2).

10. The PIN pin interchangeable insert assembly mold according to claim 1, characterized in that: Two jig positioning rods (31) are provided on the PIN needle support (3), and jig slots (42) are formed on the left and right side edges of the PIN needle jig (4), and the two jig positioning rods (31) pass through the two jig slots (42) respectively.

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