Injection mold for nine-corner interchangeable insert tray

Abstract

The invention belongs to the technical field of molds, and particularly relates to a nine-corner interchangeable insert tray injection mold. The tray injection mold comprises a tray injection molding lower mold and a tray injection molding upper mold, an injection molding flow dividing piece is arranged above the tray injection molding upper mold, four frame plates are arranged between the tray injection molding lower mold and the tray injection molding upper mold, an insert placement space is defined by the four frame plates, and a replaceable insert assembly is arranged in the insert placement space. And two side part fixing frame plates and two end part fixing frame plates are arranged on the tray injection molding lower mold. In the using process, through cooperation of the replaceable insert assemblies and the staggered transverse and vertical groove forming structures, the transverse groove structure and the vertical groove structure of the tray plastic part can be synchronously formed in the one-time injection molding process, secondary machining is not needed, the production efficiency is remarkably improved, and the machining cost is reduced.

Description

Technical Field

[0001] The invention belongs to the technical field of molds and relates to an injection mold for a nine-angle interchangeable insert tray. Background Art

[0002] In the field of pallet injection molds, traditional mold structures often make it difficult to efficiently mold pallet plastic parts with complex horizontal and vertical groove structures. To achieve the molding of horizontal and vertical grooves on the pallet, the conventional method is through secondary processing, that is, after a single injection molding, the semi-finished product is subjected to additional milling, stamping and other processing steps. This not only increases production time and cost, but also easily leads to dimensional accuracy deviations. In addition, the inserts of traditional molds usually adopt an integral structure. Once partially damaged, the entire piece needs to be replaced, and the maintenance cost is high, which is not conducive to the company's cost control and production efficiency improvement. Therefore, there is an urgent need to design a nine-angle interchangeable insert pallet injection mold that can overcome the above defects.

[0003] In order to overcome the shortcomings of the existing technology, people have proposed various solutions through continuous exploration. For example, a Chinese patent discloses a pallet injection mold [application number: 201510437432.3], which includes a movable mold and a fixed mold. The movable mold is provided with an ejector plate, and the ejector plate is provided with a number of ejector rods that pass through the movable mold. The movable mold and the fixed mold are respectively provided with a first switching module and a second switching module that can interfere with each other. The cross-sections of the first switching module and the second switching module are both square. The four identical sides of the first switching module and the second switching module are respectively provided with forming blocks. The movable mold and the fixed mold are respectively provided with a first fixing groove and a second fixing groove for fixing the first switching module and the second switching module. However, during use, if this solution is to be used to form the horizontal grooves and vertical grooves on the pallet, secondary processing is still required. Once the mold insert is partially damaged, it needs to be replaced as a whole. This has the disadvantages of low production efficiency and high subsequent maintenance costs. Summary of the Invention

[0004] The purpose of the present invention is to solve the above problems and provide a nine-corner interchangeable insert tray injection mold.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] A nine-corner interchangeable insert pallet injection mold, comprising a pallet injection mold and a pallet injection mold, an injection diverter is provided above the pallet injection mold, four frame plates are provided between the pallet injection mold and the pallet injection mold, the four frame plates together form an insert placement space, a replaceable insert assembly is provided in the insert placement space, two side fixing frame plates and two end fixing frame plates are provided on the pallet injection mold, the side fixing frame plates and the end fixing frame plates are provided with staggered horizontal and vertical groove molding structures that pass through the frame plates and extend into the replaceable insert assembly, a straight top demolding piece is provided below the pallet injection mold, and the straight top demolding piece corresponds to the position of the replaceable insert assembly.

[0007] In the above-mentioned nine-angle interchangeable insert pallet injection mold, the staggered horizontal and vertical groove forming structure includes a plurality of horizontal groove forming slides arranged on the side fixed frame plate and a plurality of vertical groove forming slides arranged on the end fixed frame plate, and the horizontal groove forming slides and the vertical groove forming slides are staggered.

[0008] In the above-mentioned nine-angle interchangeable insert pallet injection mold, the two side fixing frame plates are arranged opposite to each other, the horizontal groove forming slides located on the two side fixing frame plates are also arranged opposite to each other, the two end fixing frame plates are arranged opposite to each other, and the vertical groove forming slides located on the two end fixing frame plates are also arranged opposite to each other.

[0009] In the above-mentioned nine-angle interchangeable insert pallet injection mold, the horizontal groove forming slide is located below the vertical groove forming slide, and the center line of the horizontal groove forming slide is perpendicular to the center line of the vertical groove forming slide.

[0010] In the above-mentioned nine-angle interchangeable insert pallet injection mold, the side fixing frame plate is provided with a side fixing slide that can make reciprocating linear motion along one end close to or away from the pallet injection lower mold, the side fixing slide and the transverse groove forming slide are fixed by a screw block, the side fixing frame plate is provided with a first cylinder for driving the side fixing slide, the side fixing frame plate is provided with a first limiting rail, and the side fixing slide is slidably matched with the first limiting rail.

[0011] In the above-mentioned nine-angle interchangeable insert pallet injection mold, the end fixing frame plate is provided with an end fixing slide that can make reciprocating linear motion along one end close to or away from the pallet injection lower mold, the end fixing slide is fixed to the vertical groove forming slide by a screw block, the end fixing frame plate is provided with a second cylinder for driving the end fixing slide, the end fixing frame plate is provided with a second limiting rail, and the end fixing frame plate is slidably matched with the second limiting rail.

[0012] In the above-mentioned nine-angle interchangeable insert pallet injection mold, the interchangeable insert assembly includes a plurality of tray forming inserts arranged in the insert placement space, and the tray forming inserts have a plurality of horizontal slide grooves and vertical slide grooves. The horizontal groove forming slide strips are slidably matched with the horizontal slide grooves, and the vertical groove forming slide strips are slidably matched with the vertical slide grooves.

[0013] In the above-mentioned nine-angle interchangeable insert pallet injection mold, the injection diverter component includes an injection main plate and an injection diverter plate arranged above the pallet injection upper mold.

[0014] In the above-mentioned nine-angle interchangeable insert pallet injection mold, the straight ejector includes a fixed base plate arranged below the pallet injection lower mold, the fixed base plate is provided with a push rod fixing slide, the push rod fixing slide is provided with a number of straight ejectors parallel to each other, and the straight ejectors pass through the pallet forming insert.

[0015] In the above-mentioned nine-corner interchangeable insert tray injection mold, two anti-deflection irons are provided on the fixed base plate, and the ejector fixing slide plate is in sliding cooperation with the anti-deflection irons.

[0016] Compared with the existing technology, the advantages of the present invention are:

[0017] 1. During use, the present invention can simultaneously mold the horizontal groove structure and the vertical groove structure of the pallet plastic part in a single injection molding process through the cooperation between the replaceable insert assembly and the staggered horizontal and vertical groove molding structure, without the need for secondary processing, thereby significantly improving production efficiency and reducing processing costs.

[0018] 2. The replaceable insert assembly of the present invention is made of a combined insert structure and is a modular design. When an insert is damaged, only the damaged insert needs to be replaced without replacing the entire insert, which greatly reduces the subsequent maintenance cost and facilitates the rapid maintenance and upgrade of the mold.

[0019] 3. The replaceable nature of the insert assembly and the adjustability of the horizontal and vertical groove forming structure in the present invention enable the mold to adapt to the production requirements of pallets of different specifications and shapes, thereby enhancing the versatility and applicability of the mold.

[0020] Other advantages, objectives and features of the present invention will be reflected in part from the following description and will be understood by those skilled in the art through study and practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a structural schematic diagram of the present invention.

[0022] Figure 2 It is a partial structural schematic diagram of the present invention.

[0023] Figure 3 It is a partial structural diagram of another aspect of the present invention.

[0024] Figure 4 It is a partial structural diagram of another aspect of the present invention.

[0025] In the figure: pallet injection molding lower mold 1, pallet injection molding upper mold 2, injection molding diverter 3, frame plate 4, replaceable insert assembly 5, side fixing frame plate 6, end fixing frame plate 7, staggered horizontal and vertical groove molding structure 8, straight top demolding part 9, horizontal groove molding slide 10, vertical groove molding slide 11, side fixed slide 12, first cylinder 13, first limiting rail 14, end fixed slide 15, second cylinder 16, second limiting rail 17, pallet molding insert 18, horizontal slide 19, vertical slide 20, injection molding main board 21, injection molding diverter plate 22, fixed base plate 23, ejector fixing slide 24, straight ejector 25, anti-deflection iron 26. DETAILED DESCRIPTION

[0026] The present invention will be further described below with reference to the accompanying drawings.

[0027] like Figure 1-4 As shown, a nine-corner interchangeable insert pallet injection mold includes a pallet injection mold 1 and a pallet injection mold 2, an injection diverter 3 is provided above the pallet injection mold 2, four frame plates 4 are provided between the pallet injection mold 1 and the pallet injection mold 2, the four frame plates 4 together form an insert placement space, a replaceable insert assembly 5 is provided in the insert placement space, two side fixing frame plates 6 and two end fixing frame plates 7 are provided on the pallet injection mold 1, the side fixing frame plates 6 and the end fixing frame plates 7 are provided with staggered horizontal and vertical groove molding structures 8 that pass through the frame plates 4 and extend into the replaceable insert assembly 5, a straight top demolding part 9 is provided below the pallet injection mold 1, and the straight top demolding part 9 corresponds to the position of the replaceable insert assembly 5.

[0028] The cam 4 is provided with a plurality of support members 5, and the support members 5 are provided with a plurality of support members 6. The support members 5 are provided with a plurality of support members 7. The support members 5 are provided with support members 8.

[0029] It realizes the integrated functions of uniform injection of raw materials, stable positioning of inserts and reliable demoulding of plastic parts, breaks through the traditional mold single cavity design, and constructs a composite structure of "basic mold base + replaceable inserts + molding slides".

[0030] Combine Figure 1-4 As shown, the staggered horizontal and vertical groove forming structure 7 includes a plurality of horizontal groove forming slides 10 arranged on the side fixed frame plate 6 and a plurality of vertical groove forming slides 11 arranged on the end fixed frame plate 7. The horizontal groove forming slides 10 and the vertical groove forming slides 11 are staggered, the two side fixed frame plates 6 are arranged opposite each other, the horizontal groove forming slides 10 located on the two side fixed frame plates 6 are also arranged opposite each other, the two end fixed frame plates 7 are arranged opposite each other, and the vertical groove forming slides 11 located on the two end fixed frame plates 7 are also arranged opposite each other. The horizontal groove forming slides 10 are located below the vertical groove forming slides 11, and the center lines of the horizontal groove forming slides 10 and the vertical groove forming slides 11 are perpendicular to each other.

[0031] In this embodiment, during the injection molding process, the transverse groove forming slide 10 and the vertical groove forming slide 11 cooperate with the replaceable insert assembly 5 to simultaneously form the transverse and vertical groove structures of the tray plastic part. This staggered arrangement greatly improves the molding efficiency and accuracy of the groove structure compared to traditional step-by-step molding or secondary processing, and reduces the errors caused by multiple processing.

[0032] Optimal solution: The horizontal groove forming slide 10 is slidably connected to the side fixed frame plate 6 through a dovetail groove, and the vertical groove forming slide 11 is assembled on the end fixed frame plate 7 in the same way. The two types of slides adopt a stepped staggered layout. A 5mm gap is left between the bottom surface of the horizontal slide 10 and the top surface of the vertical slide 11 to avoid movement interference. The end of the slide is designed to be chamfered at 45°, which cooperates with the guide slope of the insert slide to ensure fast and accurate alignment. The staggered fit of the horizontal and vertical slides enables the mold to synchronously extrude the plastic melt during the mold closing process to form a crisscross groove structure, which reduces 2-3 processes compared to traditional step-by-step processing; the two side fixed frame plates 6 are kept parallel to the lower mold 1 through positioning keys, and the horizontal groove forming slide 1 thereon is kept parallel to the lower mold 1 through positioning keys. 0 is distributed in a mirror-symmetrical manner; the end fixing frame plate 7 is similar, and the vertical groove forming slides 11 are symmetrically arranged. This layout ensures that the grooves on both sides of the pallet are evenly stressed, and the molding size error is controlled within ±0.1mm. The symmetrical structure effectively eliminates the unbalanced load stress during the injection molding process, improves the structural strength of the pallet, and reduces the risk of warping and deformation; the center line of the horizontal groove forming slide 10 and the vertical groove forming slide 11 are perpendicularly crossed at 90°, and the installation height of the horizontal slide is lower than that of the vertical slide. This design enables the horizontal and vertical slides to form a three-dimensional support in the insert, and the melt flow resistance is uniform, avoiding local air entrapment and welding marks. The vertically crossed spatial layout optimizes the melt flow path, improves molding quality, and improves product qualification rate.

[0033] The side fixing frame plate 6 is provided with a side fixing slide 12 which can make reciprocating linear motion along one end of the pallet injection lower mold 1 close to or away from the side fixing slide 12, and the side fixing slide 12 is fixed to the transverse groove forming slide 10 by a screw block. The side fixing frame plate 6 is provided with a first cylinder 13 for driving the side fixing slide 12, and the side fixing frame plate 6 is provided with a first limiting rail 14, and the side fixing slide 12 is slidably matched with the first limiting rail 14.

[0034] In this embodiment, when it is necessary to replace the insert or adjust the transverse groove structure, the first cylinder 13 drives the side fixed slide 12 to slide along the first limiting track 14, driving the transverse groove forming slide 10 to separate from the replaceable insert assembly 5, facilitating the disassembly and installation of the insert. This driving and limiting structure design makes the position adjustment of the transverse groove forming slide 10 more precise and convenient, further improving the operational convenience and practicality of the mold.

[0035] Combine Figure 3-4As shown, the end fixing frame plate 7 is provided with an end fixing slide 15 which can make reciprocating linear motion along one end close to or away from the tray injection lower mold 1, and the end fixing slide 15 is fixed to the vertical groove forming slide 11 by a screw block, and the end fixing frame plate 7 is provided with a second cylinder 16 for driving the end fixing slide 15, and the end fixing frame plate 7 is provided with a second limiting rail 17, and the end fixing frame plate 7 is slidably matched with the second limiting rail 17.

[0036] In this embodiment, the end fixing frame plate 7 is provided with an end fixing slide 15 which can make reciprocating linear motion along one end of the pallet injection lower mold 1 close to or away from the end. The end fixing slide 15 is fixed to the vertical groove forming slide 11 by a screw block. The end fixing frame plate 7 is provided with a second cylinder 16 for driving the end fixing slide 15. At the same time, a second limiting rail 17 is provided. The end fixing slide 15 and the second limiting rail 17 are slidably matched. Its working principle is similar to the driving structure of the horizontal groove forming slide. The second cylinder 16 can drive the end fixing slide 15 to slide along the second limiting rail 17 to realize the separation or cooperation of the vertical groove forming slide 11 and the replaceable insert assembly 5. The independent driving structure of the horizontal and vertical groove forming slides enables the mold to flexibly adapt to the groove forming requirements of different shapes and sizes.

[0037] The replaceable insert assembly 5 includes a plurality of tray-forming inserts 18 arranged in the insert placement space, and the tray-forming insert 18 has a plurality of transverse slide grooves 19 and vertical slide grooves 20. The transverse groove-forming slide strips 10 slide in conjunction with the transverse slide grooves 19, and the vertical groove-forming slide strips 11 slide in conjunction with the vertical slide grooves 20.

[0038] In this embodiment, during injection molding, the horizontal groove molding slide 10 and the vertical groove molding slide 11 are respectively inserted into the corresponding horizontal slide groove 19 and vertical slide groove 20, and together with the tray molding insert 18 form a complete mold cavity, thereby realizing the synchronous molding of the horizontal and vertical grooves of the pallet plastic part. When the insert is partially damaged, due to the use of a combined insert structure, only the damaged single or multiple pallet molding inserts 18 need to be replaced, and there is no need to replace the entire insert assembly, which greatly reduces the maintenance cost.

[0039] Combine Figure 1-2 As shown, the injection molding diverter 3 includes an injection molding main plate 21 and an injection molding diverter plate 22 which are arranged above the tray injection molding upper mold 2 .

[0040] In this embodiment, the injection molding main board 21 is connected to the injection molding equipment. After the raw materials are introduced, the raw materials are evenly distributed to the mold cavity through the injection molding diverter plate 22, ensuring uniform injection filling of various parts of the pallet plastic parts, avoiding injection molding defects such as material shortage and shrinkage, and improving the molding quality and pass rate of the product.

[0041] Combine Figure 1-4 As shown, the straight ejector 9 includes a fixed base plate 23 arranged below the tray injection lower mold 1, and a push rod fixing slide 24 is provided on the fixed base plate 23. A plurality of straight ejectors 25 parallel to each other are provided on the push rod fixing slide 24. The straight ejectors 25 pass through the tray forming insert 18, and two anti-deflection irons 26 are provided on the fixed base plate 23. The push rod fixing slide 24 slides with the anti-deflection iron 26.

[0042] In this embodiment, after the injection molding is completed, the driving device (such as a hydraulic cylinder, etc.) pushes the ejector fixing slide 24 to slide along the anti-deflection iron 26, driving the straight ejector 25 to be ejected upward, pushing the pallet plastic part out of the mold cavity, and completing the demolding process. The setting of the anti-deflection iron 26 effectively prevents the ejector fixing slide 24 from deflecting during the movement, ensures the stability and reliability of the demolding action, and avoids product damage caused by improper demolding.

[0043] The working principle of the present invention is:

[0044] According to production requirements, a pallet forming insert 18 of appropriate specifications is selected, and the horizontal groove forming slide 10 and the vertical groove forming slide 11 are fixed to the side fixed slide 12 and the end fixed slide 15 respectively by screw blocks. The side fixed slide 12 and the end fixed slide 15 are driven respectively by the first cylinder 13 and the second cylinder 16, so that the horizontal groove forming slide 10 and the vertical groove forming slide 11 are respectively inserted into the horizontal slide 19 and the vertical slide 20 of the pallet forming insert 18, and the assembly and debugging of the mold are completed. The pallet injection lower mold 1 and the pallet injection upper mold 2 are closed, and the injection molding raw material is introduced through the injection molding main board 21 of the injection molding diverter 3, and after being evenly distributed by the injection molding diverter plate 22, it is injected into the frame plate 4 and the replaceable insert assembly. 5 and the staggered horizontal and vertical groove forming structure 8, under the action of injection pressure, the raw material fills the entire cavity, and after cooling and solidification, a pallet plastic part with a horizontal and vertical groove structure is formed. After the injection molding is completed, the straight ejector 9 is started, and the ejector fixing slide 24 drives the straight ejector 25 to eject the pallet plastic part from the mold cavity under the limiting action of the anti-deflection iron 26. If the insert is damaged, the side fixed slide 12 and the end fixed slide 15 are driven respectively by the first cylinder 13 and the second cylinder 16 to separate the horizontal groove forming slide 10 and the vertical groove forming slide 11 from the pallet forming insert 18, so that the damaged pallet forming insert 18 can be disassembled and replaced, and then the mold is reassembled for the next injection molding production.

[0045] The specific embodiments described herein are merely examples of the spirit of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described, or replace them with similar methods without departing from the spirit of the present invention.

[0046] Although the terms pallet injection molding lower mold 1, pallet injection molding upper mold 2, injection molding diverter 3, frame plate 4, replaceable insert assembly 5, side fixing frame plate 6, end fixing frame plate 7, staggered horizontal and vertical groove molding structure 8, straight ejector 9, horizontal groove molding slide 10, vertical groove molding slide 11, side fixed slide 12, first cylinder 13, first limiting rail 14, end fixed slide 15, second cylinder 16, second limiting rail 17, pallet molding insert 18, horizontal slide 19, vertical slide 20, injection molding main board 21, injection molding diverter plate 22, fixed base plate 23, ejector fixing slide 24, straight ejector 25, anti-deflection iron 26 are used more frequently in this article, the possibility of using other terms is not excluded. The use of these terms is only for the purpose of more conveniently describing and explaining the essence of the present invention. Interpreting them as any additional restrictions is contrary to the spirit of the present invention.

Claims

1. A nine-corner interchangeable insert pallet injection mold, comprising a pallet injection lower mold (1) and a pallet injection upper mold (2), characterized in that: An injection molding diverter (3) is provided above the pallet injection molding upper mold (2); four frame plates (4) are provided between the pallet injection molding lower mold (1) and the pallet injection molding upper mold (2); the four frame plates (4) enclose an insert placement space; a replaceable insert assembly (5) is provided in the insert placement space; two side fixing frame plates (6) and two end fixing frame plates (7) are provided on the pallet injection molding lower mold (1); the side fixing frame plates (6) and the end fixing frame plates (7) are provided with staggered horizontal and vertical groove forming structures (8) that pass through the frame plates (4) and extend into the replaceable insert assembly (5); a straight top demoulding member (9) is provided below the pallet injection molding lower mold (1); the straight top demoulding member (9) corresponds to the position of the replaceable insert assembly (5).

2. The nine-corner interchangeable insert tray injection mold according to claim 1, characterized in that: The staggered horizontal and vertical groove forming structure (7) comprises a plurality of horizontal groove forming slides (10) arranged on the side fixed frame plate (6) and a plurality of vertical groove forming slides (11) arranged on the end fixed frame plate (7), wherein the horizontal groove forming slides (10) and the vertical groove forming slides (11) are staggered.

3. The nine-corner interchangeable insert tray injection mold according to claim 2, characterized in that: The two side fixing frames (6) are arranged opposite to each other, and the transverse groove forming slides (10) located on the two side fixing frames (6) are also arranged opposite to each other. The two end fixing frames (7) are arranged opposite to each other, and the vertical groove forming slides (11) located on the two end fixing frames (7) are also arranged opposite to each other.

4. The nine-corner interchangeable insert tray injection mold according to claim 3, characterized in that: The transverse groove forming slide bar (10) is located below the vertical groove forming slide bar (11), and the center line of the transverse groove forming slide bar (10) and the center line of the vertical groove forming slide bar (11) are perpendicular to each other.

5. The nine-corner interchangeable insert tray injection mold according to claim 4, characterized in that: The side fixing frame plate (6) is provided with a side fixing slide (12) which can make reciprocating linear motion along one end close to or away from the tray injection lower mold (1); the side fixing slide (12) is fixed to the transverse groove forming slide (10) by a screw block; the side fixing frame plate (6) is provided with a first cylinder (13) for driving the side fixing slide (12); the side fixing frame plate (6) is provided with a first limiting rail (14); the side fixing slide (12) and the first limiting rail (14) are in sliding cooperation.

6. The nine-corner interchangeable insert tray injection mold according to any one of claims 3 to 5, characterized in that: The end fixing frame plate (7) is provided with an end fixing slide (15) which can make reciprocating linear motion along one end close to or away from the tray injection lower mold (1); the end fixing slide (15) is fixed to the vertical groove forming slide (11) by a screw block; the end fixing frame plate (7) is provided with a second cylinder (16) for driving the end fixing slide (15); the end fixing frame plate (7) is provided with a second limiting rail (17); the end fixing frame plate (7) and the second limiting rail (17) are in sliding cooperation.

7. The nine-corner interchangeable insert tray injection mold according to any one of claims 3 to 5, characterized in that: The replaceable insert assembly (5) includes a plurality of tray-shaped inserts (18) arranged in an insert placement space, wherein the tray-shaped insert (18) has a plurality of transverse slide grooves (19) and vertical slide grooves (20), the transverse groove-shaped slide strips (10) are slidably engaged with the transverse slide grooves (19), and the vertical groove-shaped slide strips (11) are slidably engaged with the vertical slide grooves (20).

8. The nine-corner interchangeable insert tray injection mold according to claim 1, characterized in that: The injection molding diverter (3) comprises an injection molding main plate (21) and an injection molding diverter plate (22) arranged above the tray injection molding upper mold (2).

9. The nine-corner interchangeable insert tray injection mold according to claim 7, characterized in that: The straight ejector (9) comprises a fixed base plate (23) arranged below the tray injection lower mold (1); a push rod fixing slide plate (24) is provided on the fixed base plate (23); a plurality of straight ejectors (25) parallel to each other are provided on the push rod fixing slide plate (24); and the straight ejectors (25) pass through the tray forming insert (18).

10. The nine-corner interchangeable insert tray injection mold according to claim 9, characterized in that: Two anti-deflection irons (26) are provided on the fixed base plate (23), and the top rod fixing slide plate (24) is in sliding cooperation with the anti-deflection irons (26).

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