Insert injection mold with floating inclined roof structure

Abstract

The utility model provides a kind of insert injection mold with floating type inclined top structure, including upper die plate, lower die plate, inclined top piece and ejector pin mechanism, upper die plate, lower die plate are respectively embedded with upper die core, lower die core, inclined top piece penetrates lower die plate, lower die core, ejector pin mechanism includes ejector pin plate, inclined top piece, lower die core, upper die core form the cavity for molding product, inclined top piece is used to place the insert of product and eject product, inclined top piece can be followed with the lifting of ejector pin plate, inclined top piece includes inclined top rod and reset rod, inclined top rod penetrates lower die core and part extends into lower die plate, reset rod is inserted into lower die plate, reset rod is movably connected with inclined top rod by snap hook structure and is connected with ejector pin plate, snap hook structure includes first snap hook set on reset rod and second snap hook set on inclined top rod, first snap hook cooperates with second snap hook, cooperation gap can be formed between first snap hook and second snap hook, the maximum gap length L of cooperation gap is less than the downward distance of reset rod.

Description

Technical Field

[0001] This utility model relates to the field of injection mold technology, and in particular to an insert injection mold with a floating inclined top structure. Background Technology

[0002] Insert injection molding is a specialized mold technology that involves pre-placing pre-formed parts (insertions) of metal or other materials into a mold cavity, and then using injection molding to encapsulate the inserts with molten plastic and solidify them into a single unit.

[0003] In actual production, many products have undercut structures around their perimeter, and metal inserts are usually embedded in these undercut areas to enhance the product's strength. For undercut structures, angled ejector pins are typically used in the mold to assist in demolding.

[0004] However, conventional angled ejectors, after the product is ejected from the mold, directly follow the ejector plate downwards and completely reset, fitting into the lower mold core. This causes the lower mold core to interfere with the robot arm, preventing the robot arm from smoothly placing the metal insert onto the angled ejector. Consequently, the metal insert cannot be placed in place, affecting normal production and automated production. Utility Model Content

[0005] The purpose of this invention is to provide an insert injection mold with a floating inclined top structure, which aims to solve or at least partially solve the shortcomings of the above-mentioned background technology. It can avoid the lower mold core interfering with the robot arm, which would prevent the metal insert from being placed in place, thereby realizing automated production and improving production efficiency.

[0006] This utility model provides an insert injection mold with a floating inclined ejector structure, including an upper mold plate, a lower mold plate, an inclined ejector, and an ejector mechanism. The upper and lower mold plates are respectively fitted with an upper mold core and a lower mold core. The inclined ejector passes through the lower mold plate and the lower mold core sequentially from bottom to top. The ejector mechanism includes an ejector plate movably disposed below the lower mold plate. The inclined ejector, the lower mold core, and the upper mold core form a cavity for molding the product. The inclined ejector is used to place the product insert and eject the product. The inclined ejector can rise and fall with the ejector plate. The inclined ejector includes an inclined ejector rod and a return rod, with the inclined ejector rod inclined inwards. The reset rod penetrates the lower mold core and partially extends into the lower mold plate. The reset rod extends vertically into the lower mold plate. The upper end of the reset rod is movably connected to the inclined ejector rod through a hook structure. The lower end of the reset rod is connected to the ejector plate. The hook structure includes a first hook on the reset rod and a second hook on the inclined ejector rod. The first hook and the second hook cooperate, and a fitting gap can be formed between the first hook and the second hook. When the mold is changed from the open state to the closed state, the ejector plate drives the reset rod to move down to complete reset. The maximum gap length L of the fitting gap is less than the downward movement distance of the reset rod.

[0007] Furthermore, the first hook includes a first locking block located at the end of the reset rod and a first sliding groove extending vertically downward from the lower surface of the first locking block, and the second hook includes a second locking block located at the end of the inclined push rod and a second sliding groove extending upward from the upper surface of the second locking block, with the first locking block and the second locking block slidably disposed in the second sliding groove and the first sliding groove, respectively.

[0008] Furthermore, the lower bottom wall of the first chute, the lower surface of the first locking block, and the upper and lower surfaces of the second locking block are all kept horizontal.

[0009] Furthermore, the first hook includes a first locking block located at the end of the reset rod and a first sliding groove extending vertically downward from the lower surface of the first locking block, and the second hook includes a second locking block protruding from the end of the inclined push rod, the second locking block being slidably disposed within the first sliding groove.

[0010] Furthermore, the inclined push rod has an inclined push block located at its upper end, and the inclined push block is provided with a positioning structure for positioning the insert.

[0011] Furthermore, the lower mold core and the lower mold plate are respectively provided with inclined guide holes and inclined guide grooves that cooperate with the inclined ejector rod, and the inclined guide holes and inclined guide grooves are connected; the lower mold plate is also provided with a movable hole that cooperates with the reset rod, and the movable hole is connected with the inclined guide groove.

[0012] Furthermore, the lower mold core is detachably provided with a first sleeve, which penetrates the upper and lower surfaces of the lower mold core, and an oblique guide hole is provided on the first sleeve.

[0013] Furthermore, the lower template is detachably provided with a second sleeve, which penetrates the upper and lower surfaces of the lower template, and movable holes and inclined guide grooves are provided on the second sleeve.

[0014] The insert injection mold with a floating inclined ejector structure provided in this embodiment of the invention, through the cooperation of the inclined ejector rod, the reset rod, and the ejector plate, ensures that when the mold transitions from the open state to the closed state, the reset rod is fully reset, allowing the inclined ejector rod to move downwards to make room for the robot's operation. The inclined ejector rod remains in a preset position and is in a partially reset state, preventing the lower mold core from interfering with the robot's placement of the insert on the inclined ejector rod due to the inclined ejector rod being fully reset. Simultaneously, the downward driving force of the robot's arm presses the inclined ejector rod down to its fully reset state, achieving segmented reset of the inclined ejector rod and the reset rod. Therefore, this insert injection mold with a floating inclined ejector structure can avoid the lower mold core interfering with the robot's operation, thus enabling automated production and improving production efficiency. Attached Figure Description

[0015] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a cross-sectional view of an insert injection mold with a floating inclined top structure according to Embodiment 1 of this utility model.

[0017] Figure 2 for Figure 1 A magnified diagram of point A in the middle.

[0018] Figure 3 for Figure 1 The exploded three-dimensional view of the inclined top component is shown.

[0019] Figure 4 for Figure 3 A partial schematic diagram of the inclined top component is shown.

[0020] Figure 5 for Figure 3 A magnified diagram of point B in the middle.

[0021] Figure 6 for Figure 3 The diagram shows a partial view of the angled ejector in the mold-open state.

[0022] Figure 7 for Figure 3 A partial schematic diagram of the inclined top component during the reset process. Figure 1 .

[0023] Figure 8 for Figure 3 A partial schematic diagram of the inclined top component during the reset process. Figure 2 .

[0024] Figure 9 for Figure 1 A partial schematic diagram of the lower template and lower mold core is shown.

[0025] Figure 10 This is a perspective view of the inclined ejector of an insert injection mold with a floating inclined ejector structure, according to Embodiment 2 of this utility model.

[0026] Figure 11 This is a perspective view of the insert of this utility model.

[0027] The attached diagram lists the components represented by each number as follows:

[0028] 10. Upper mold plate; 100. Product; 101. Insert; 1011. Positioning protrusion; 11. Upper mold core; 20. Lower mold plate; 200. Robot arm; 21. Lower mold core; 211. Angled guide hole; 212. First sleeve; 22. Angled guide groove; 23. Movable hole; 24. Second sleeve; 30. Angled ejector; 31. Reset rod; 311. First hook; 312. First locking block; 313. First slide groove; 32. Angled ejector rod; 321. Second hook; 322. Second locking block; 323. Second slide groove; 324. Angled ejector block; 325. Positioning groove; 33. Fitting clearance; 40. Ejector mechanism; 41. Ejector plate; 42. Ejector pin. Detailed Implementation

[0029] The specific embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate this utility model, but are not intended to limit its scope.

[0030] The terms “first,” “second,” “third,” “fourth,” etc. (if present) in the specification and claims of this utility model are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence.

[0031] The directional terms such as "up," "down," "left," "right," "front," "back," "top," and "bottom" (if present) used in the specification and claims of this utility model are defined according to the position of the structures in the drawings and the relative positions of the structures, and are only for the purpose of clarity and convenience in expressing the technical solution. It should be understood that the use of directional terms should not limit the scope of protection claimed in this application.

[0032] Please see Figures 1-4 and Figures 6-8 An insert injection mold with a floating inclined ejector structure includes an upper mold plate 10, a lower mold plate 20, an inclined ejector 30, and an ejector pin mechanism 40.

[0033] The upper mold plate 10 and the lower mold plate 20 are respectively fitted with the upper mold core 11 and the lower mold core 21. The inclined ejector 30 passes through the lower mold plate 20 and the lower mold core 21 from bottom to top. The ejector mechanism 40 includes an ejector plate 41 movably disposed below the lower mold plate 20. The inclined ejector 30, the lower mold core 21, and the upper mold core 11 form a cavity (not shown in the figure) for molding the product 100. The inclined ejector 30 is used to place the insert 101 of the product 100 and eject the product 100. The inclined ejector 30 can move up and down with the ejector plate 41.

[0034] The inclined ejector 30 includes an inclined ejector rod 32 and a reset rod 31. The inclined ejector rod 32 extends inwardly through the lower mold core 21 and partially extends into the lower mold plate 20. The reset rod 31 extends vertically into the lower mold plate 20. The upper end of the reset rod 31 is movably connected to the inclined ejector rod 32 through a hook structure. The lower end of the reset rod 31 is connected to the ejector plate 41.

[0035] The latch structure includes a first latch 311 disposed on the reset rod 31 and a second latch 321 disposed on the inclined push rod 32. The first latch 311 and the second latch 321 cooperate with each other, and a clearance fit gap 33 can be formed between the first latch 311 and the second latch 321.

[0036] When the mold is open, a clearance 33 is formed between the first hook 311 and the second hook 321.

[0037] When the mold transitions from the open state to the closed state, the ejector plate 41 moves the reset rod 31 downwards to full reset. The maximum clearance length L of the mating clearance 33 is less than the downward movement distance of the reset rod 31. This ensures that during the reset stroke, the first latch 311 can abut against the second latch 321 to move the inclined ejector rod 32 downwards to a preset position. In this embodiment, the difference between the downward movement distance of the reset rod 31 and the maximum clearance length L of the mating clearance 33 is 15mm, so the reset rod 31 moves the inclined ejector rod 32 downwards by 15mm.

[0038] More specifically, during the transition from the mold-opening state to the mold-closed state, i.e., the reset process of the inclined ejector 30, the ejector plate 41 drives the reset rod 31 to move downwards. Because a clearance 33 exists between the first latch 311 and the second latch 321, they do not interfere with each other temporarily. After the reset rod 31 moves downwards a certain distance, the first latch 311 and the second latch 321 abut against each other, eliminating the clearance 33. The reset rod 31 can then drive the inclined ejector 32 downwards to create space for the robot arm 200 to operate. The movement avoids interference between the upper template 10 or the inclined push rod 32 and the operation of the robot arm 200, thus facilitating the robot arm 200 to place the insert 101 on the inclined push rod 32; subsequently, the reset rod 31 moves down to full reset, completing the reset of the reset rod 31; at the same time, the inclined push rod 32 stays at the preset position and is in a state of incomplete reset, then the robot arm 200 drives the inclined push rod 32 down to full reset, and the first hook 311 and the second hook 321 form a mating gap 33 again, completing the reset of the inclined push rod 32.

[0039] As described above, the insert injection mold with a floating inclined ejector structure provided by this utility model embodiment, through the cooperation of the inclined ejector rod 32, the reset rod 31, and the ejector plate 41, ensures that when the mold changes from the open state to the closed state, the reset rod 31 is fully reset, allowing the inclined ejector rod 32 to move downward to make room for the robot arm 200. The inclined ejector rod 32 remains in a preset position and is in a partially reset state, avoiding interference from the lower mold core 21 to the robot arm 200 in placing the insert 101 on the inclined ejector rod 32 due to the inclined ejector rod 32 being fully reset. At the same time, the downward driving force of the robot arm 200 pushes the inclined ejector rod 32 down to be fully reset, realizing the segmented reset of the inclined ejector rod 32 and the reset rod 31. Therefore, this insert injection mold with a floating inclined ejector structure can avoid the lower mold core 21 interfering with the robot arm 200, thus preventing the insert 101 from being placed in place, thereby achieving automated production and improving production efficiency.

[0040] Furthermore, the first latch 311 includes a first latching block 312 located at the end of the reset rod 31 and a first sliding groove 313 extending vertically downward from the lower surface of the first latching block 312. The second latch 321 includes a second latching block 322 located at the end of the inclined push rod 32 and a second sliding groove 323 extending upward from the upper surface of the second latching block 322. The first latching block 312 and the second latching block 322 are slidably disposed in the second sliding groove 323 and the first sliding groove 313, respectively, and the first sliding groove 313 and the second sliding groove 323 can respectively accommodate the second latching block 322 and the first latching block 312. This arrangement can reduce the volume of the inclined push member 30, making it more compact.

[0041] In the mold-closed state, the upper surface of the first locking block 312 abuts against the lower surface of the second locking block 322.

[0042] When the mold is open, the inclined ejector 30 is in the ejection state. When the reset rod 31 moves upward, the upper surface of the first locking block 312 abuts against the lower surface of the second locking block 322 to drive the inclined ejector rod 32 to move upward at an angle, thereby ejecting the product 100.

[0043] More specifically, the lower bottom wall of the first slide 313, the lower surface of the first latch 312, and the upper and lower surfaces of the second latch 322 are all kept horizontal. This arrangement ensures smooth operation of the first latch 311 and the second latch 321 and reduces wear between parts.

[0044] More specifically, the gap length of the mating gap 33 is equal to the distance between the first locking block 312 and the second locking block 322.

[0045] Please see Figure 5 and Figure 11The inclined push rod 32 has an inclined push block 324 at its upper end, and the inclined push block 324 is provided with a positioning structure for positioning the insert 101. The insert 101 has a positioning protrusion 1011 protruding toward the inclined push block 324, and the positioning structure includes a positioning groove 325 that cooperates with the positioning protrusion 1011. In this embodiment, the inclined push block 324 is recessed with two positioning grooves 325, and the insert 101 is positioned in place by cooperating with the positioning protrusion 1011 through the positioning grooves 325.

[0046] Please see Figure 9 The lower mold core 21 and the lower mold plate 20 are respectively provided with inclined guide holes 211 and inclined guide grooves 22 that cooperate with the inclined push rod 32. The inclined guide holes 211 and inclined guide grooves 22 are connected and the inclined push rod 32 can slide along the inclined guide holes 211 and inclined guide grooves 22.

[0047] The lower template 20 is also provided with a movable hole 23 that cooperates with the reset rod 31. The movable hole 23 is connected to the inclined guide groove 22, and the reset rod 31 can slide along the movable hole 23.

[0048] Furthermore, the lower mold core 21 is detachably provided with a first sleeve 212, which penetrates the upper and lower surfaces of the lower mold core 21, and an oblique guide hole 211 is provided on the first sleeve 212. The first sleeve 212 can prevent the lower mold core 21 from directly contacting the oblique ejector rod 32, thereby preventing wear on the lower mold core 21 and extending the service life of the mold. At the same time, the first sleeve 212 is detachable, which makes it convenient for workers to disassemble and replace it when it is worn, thereby reducing maintenance costs.

[0049] The lower mold plate 20 is detachably equipped with a second sleeve 24, which penetrates the upper and lower surfaces of the lower mold plate 20. A movable hole 23 and an inclined guide groove 22 are provided on the second sleeve 24. The second sleeve 24 prevents the lower mold plate 20 from directly contacting the inclined ejector rod 32 and the reset rod 31, thereby preventing wear on the lower mold plate 20 and extending the service life of the mold. Furthermore, the second sleeve 24 is detachable, making it convenient for workers to disassemble and replace it after wear, thus reducing maintenance costs.

[0050] Please see Figure 1 The ejector mechanism 40 also includes several ejector pins 42, which are mounted on the ejector plate 41. The ejector pins 42 can pass through the lower mold plate 20 and the lower mold core 21 and extend into the cavity to assist the inclined ejector 30 in ejecting the product 100.

[0051] The reset operation procedure of the inclined ejector 30:

[0052] (1) Please refer to Figure 6 In the mold opening state: after the inclined ejector 30 ejects the product 100, the inclined ejector block 324 extends above the lower mold core 21, and the lower bottom wall of the first slide groove 313 abuts against the lower surface of the second locking block 322.

[0053] (2) Please refer to Figure 7 The reset rod is reset: the ejector plate 41 drives the reset rod 31 to move down. Since there is a fitting gap 33 between the first hook 311 and the second hook 321, the first block 312 and the second block 322 do not interfere with each other. After the reset rod 31 moves down a certain distance, the lower surface of the first block 312 abuts against the upper surface of the second block 322, and the reset rod 31 drives the inclined ejector rod 32 to move down. After the reset rod 31 moves down to complete reset, the inclined ejector rod 32 stays at the preset position and is in a state of incomplete reset. Then, the robot arm 200 places the insert 101 on the inclined ejector block 324.

[0054] (3) Please refer to Figure 8 Angled ejector rod reset: The robot arm 200 presses down the angled ejector rod 32 and pushes it back to the lower mold core 21. The angled ejector block 324 engages with the first sleeve 212, realizing the complete reset of the angled ejector rod 32.

[0055] Example 2:

[0056] An insert injection mold with a floating inclined top structure is similar in structure to the insert injection mold with a floating inclined top structure in Example 1, except that:

[0057] Please see Figure 10 The first latch 311 includes a first latch 312 located at the end of the reset rod 31 and a first groove 313 extending vertically downward from the lower surface of the first latch 312. The second latch 321 includes a second latch 322 located at the end of the inclined push rod 32 and a second groove 323 extending upward from the upper surface of the second latch 322.

[0058] The second latch 321 includes a second latching block 322 protruding from the end of the inclined push rod 32, and the second latching block 322 is slidably disposed within the first slide groove 313. The first slide groove 313 can accommodate the second latching block 322.

[0059] More specifically, the lower bottom wall of the first slide 313, the lower surface of the first locking block 312, and the upper and lower surfaces of the second locking block 322 are all kept horizontal.

[0060] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the protection scope of the claims.

Claims

1. An insert injection mold with a floating inclined ejector structure, comprising an upper mold plate (10), a lower mold plate (20), an inclined ejector (30), and an ejector mechanism (40), wherein the upper mold plate (10) and the lower mold plate (20) are respectively fitted with an upper mold core (11) and a lower mold core (21), the inclined ejector (30) passes through the lower mold plate (20) and the lower mold core (21) sequentially from bottom to top, the ejector mechanism (40) includes an ejector plate (41) movably disposed below the lower mold plate (20), the inclined ejector (30), the lower mold core (21), and the upper mold core (11) form a cavity for molding a product (100), the inclined ejector (30) is used to place the insert (101) of the product (100) and eject the product (100), and the inclined ejector (30) can rise and fall with the ejector plate (41), characterized in that, The inclined ejector (30) includes an inclined ejector rod (32) and a reset rod (31). The inclined ejector rod (32) is inclined inwardly penetrating the lower mold core (21) and partially extending into the lower mold plate (20). The reset rod (31) is vertically inserted into the lower mold plate (20). The upper end of the reset rod (31) is movably connected to the inclined ejector rod (32) through a hook structure. The lower end of the reset rod (31) is connected to the ejector plate (41). The hook structure includes a first hook (311) disposed on the reset rod (31) and a second hook (321) disposed on the inclined ejector rod (32). The first hook (311) and the second hook (321) cooperate with each other, and a cooperation gap (33) can be formed between the first hook (311) and the second hook (321). When the mold opening state changes to the mold closing state, the ejector plate (41) drives the reset rod (31) to move down to full reset, and the maximum gap length L of the mating gap (33) is less than the downward movement distance of the reset rod (31).

2. The insert injection mold with a floating inclined top structure as described in claim 1, characterized in that, The first hook (311) includes a first locking block (312) located at the end of the reset rod (31) and a first sliding groove (313) extending vertically downward from the lower surface of the first locking block (312). The second hook (321) includes a second locking block (322) located at the end of the inclined top rod (32) and a second sliding groove (323) extending upward from the upper surface of the second locking block (322). The first locking block (312) and the second locking block (322) are slidably disposed in the second sliding groove (323) and the first sliding groove (313), respectively.

3. The insert injection mold with a floating inclined top structure as described in claim 2, characterized in that, The bottom wall of the first slide (313), the lower surface of the first locking block (312), and the upper and lower surfaces of the second locking block (322) are all kept horizontal.

4. The insert injection mold with a floating inclined top structure as described in claim 1, characterized in that, The first hook (311) includes a first locking block (312) located at the end of the reset rod (31) and a first sliding groove (313) extending vertically downward from the lower surface of the first locking block (312). The second hook (321) includes a second locking block (322) protruding from the end of the inclined top rod (32), and the second locking block (322) is slidably disposed in the first sliding groove (313).

5. The insert injection mold with a floating inclined top structure as described in claim 4, characterized in that, The bottom wall of the first slide (313), the lower surface of the first locking block (312), and the upper and lower surfaces of the second locking block (322) are all kept horizontal.

6. The insert injection mold with a floating inclined top structure as described in claim 1, characterized in that, The inclined rod (32) has an inclined block (324) at its upper end, and the inclined block (324) is provided with a positioning structure for positioning the insert (101).

7. The insert injection mold with a floating inclined top structure as described in claim 1, characterized in that, The lower mold core (21) and the lower template (20) are respectively provided with inclined guide holes (211) and inclined guide grooves (22) that cooperate with the inclined push rod (32), and the inclined guide holes (211) and the inclined guide grooves (22) are connected; the lower template (20) is also provided with movable holes (23) that cooperate with the reset rod (31), and the movable holes (23) and the inclined guide grooves (22) are connected.

8. The insert injection mold with a floating inclined top structure as described in claim 7, characterized in that, The lower mold core (21) is detachably provided with a first sleeve (212), the first sleeve (212) penetrates the upper and lower surfaces of the lower mold core (21), and the oblique guide hole (211) is provided on the first sleeve (212).

9. The insert injection mold with a floating inclined top structure as described in claim 7, characterized in that, The lower template (20) is detachably provided with a second sleeve (24), which penetrates the upper and lower surfaces of the lower template (20). The movable hole (23) and the inclined guide groove (22) are provided on the second sleeve (24).

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