Dust collector shell injection molding device capable of preventing mold sticking and strain

Abstract

The invention discloses a dust collector shell injection molding device capable of preventing mold sticking and strain, and relates to the technical field of dust collector shell injection molding, the dust collector shell injection molding device comprises a bottom plate, a bottom table and a bearing table, the bottom table is connected to the top end of the bottom plate, and the bearing table is fixed to the top end of the bottom table; a shell fixed mold base is fixed to the top end of the bearing table, and a plurality of cavities are evenly formed in the top end of the shell fixed mold base. According to the dust collector shell injection molding device capable of preventing mold sticking and strain, the multiple cavities are formed in the shell fixed mold bases, multiple workpieces can be synchronously machined in the injection molding machining process, the multiple shell fixed mold bases are connected in a penetrating mode through the multiple material guide grooves and the conveying grooves, synchronous filling of one injection and multiple cavities is achieved, step-by-step injection is not needed, and the production efficiency is improved. The single injection period is shortened, the unit time yield is remarkably improved, the stop frequency is reduced, the working efficiency is improved, large-batch orders can be quickly completed, namely multiple products can be taken and placed at a time, the automatic process is simplified, and the production line stability is improved.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of dust collector shell injection molding, in particular to a dust collector shell injection molding device capable of preventing mold sticking and tearing. BACKGROUND

[0002] As a core component of household appliances, the injection molding quality of a dust collector shell directly affects the appearance, assembly precision and service life of the product. Currently, the industry generally uses ABS+PC composite material, which has high toughness, easy processability of ABS and high strength, heat resistance of PC, but is prone to mold sticking and tearing due to material properties and process defects during injection molding. When the high-temperature melt contacts the mold cavity, if vacuum adsorption or mold release agent fails, the product is prone to stick to the surface of the mold, which may cause surface scratches on the product or damage the mold. With the improvement of the appearance quality requirements of household appliances, the anti-sticking and tearing technology has become a core competitive point of injection mold design.

[0003] The publication No. CN118124092B discloses an easy demolding injection molding device, which comprises a static mold, a dynamic mold and a mold. The dynamic mold and the static mold are attached to define a cavity. The mold is arranged on the dynamic mold, and the side of the mold close to the static mold is a forming part. The forming part is hollow inside and located in the cavity. The molten plastic enters the cavity through the forming part, which can preheat the forming part to make it expand under high temperature in advance, and increase its shrinkage when cooled later, so as to compensate for the difference in shrinkage between the plastic and the metal to a certain extent. A plurality of avoiding grooves are arranged on the forming part to divide the outer peripheral wall of the forming part into a plurality of supporting parts. When the workpiece cools and shrinks, the plurality of supporting parts can be squeezed to provide a larger shrinkage space for the workpiece, further relieving the excessive difference in shrinkage between the metal and the plastic to cause the plastic to crack, and avoiding the difficulty in demolding caused by excessive gripping force between the workpiece and the forming part to a certain extent.

[0004] After the injection molding is completed, the injection molded part needs to be quickly demolded. In the use of the above prior art, the sharp corners formed by the two supporting parts cut the inner circle of the workpiece to remove the excess plastic remaining in the avoiding groove, so that the workpiece is separated from the forming part. When the sharp corners cut, the force is concentrated in the narrow area (such as the edge of the avoiding groove) of the inner circle of the workpiece. The impact force of the sharp corner cutting may directly penetrate the wall thickness, causing the product to be scrapped, and the sharp corner cutting will leave obvious cutting marks (such as burrs and scratches) on the inner circle of the workpiece, which has a significant impact on high-gloss or transparent materials. Therefore, corresponding improvement is needed.

[0005] CN120680696A discloses a dust collector shell multi-color injection molding device, which comprises a base, the inner wall of the base is rotationally connected with a rotating disc, the outer part of the rotating disc is fixedly connected with a rotating column, the outer part of the rotating column is movably connected with a connecting rod, the inner wall of the base is fixedly connected with a telescopic rod, the other end of the telescopic rod is fixedly connected with a moving block, the other end of the connecting rod is rotationally connected to the bottom of the moving block, the top of the moving block is fixedly connected with a moving mold, the top of the base is fixedly connected with a locking assembly, and the locking assembly comprises two fixed plates.

[0006] The above prior art can only perform single-shell injection molding at a time, and the single-cavity device needs to frequently start and stop the injection molding machine and take and place the product, increasing the manual operation time and equipment energy consumption, thereby reducing the molding efficiency of the shell and the overall work efficiency. SUMMARY

[0007] The present application aims to provide a dust collector shell injection molding device that prevents sticking and tearing, to solve the problem of low demolding efficiency and easy demolding damage during the demolding process of the existing dust collector shell injection molding device on the market, and low overall work efficiency.

[0008] To achieve the above-mentioned purpose, the present application provides the following technical scheme: a bottom plate, a base, and a supporting table are connected at the top of the bottom plate, and the top of the base is fixed with the supporting table;

[0009] The top of the supporting table is fixed with a shell fixed mold seat, a plurality of cavities are uniformly arranged at the top of the shell fixed mold seat, a center column is connected inside each cavity, a supporting plate is connected at one side of the top of the bottom plate, guide rails are fixed at both ends of one side of the supporting plate, guide blocks are slidably connected on the guide rails, side plates are connected at one side of the guide blocks, and a lap plate is connected between the side plates through a U-shaped frame, and a material lifting and demolding mechanism is arranged at the bottom end of both sides of the lap plate.

[0010] Further, two groups of cavities are arranged on the shell fixed mold seat, and each group has four cavities, the cavities are equally spaced on the fixed mold seat, and the spacing between adjacent cavities is equal.

[0011] Further, one side of the cavity is connected with a material guide groove, and the material guide groove is V-shaped, the material guide grooves are connected with a conveying groove, and the material guide grooves and the cavity and the conveying groove are mutually penetrated.

[0012] Further, the material ejection demolding mechanism comprises a power motor, and the power motor is arranged at the top end of the bottom plate, the output shaft end of the power motor is connected with a rotating shaft, and the rotating shaft is fixed with a turnover frame at both ends, the turnover frame is rotatably connected with a support seat outside, and the support seat is fixed to the top end of the bottom plate.

[0013] Further, one side of the turnover frame is connected with a connecting arm, and one side of the connecting arm is connected with a power wheel.

[0014] Further, one end of the outer side of the side plate is provided with a power groove, and the power wheel slides in the power groove.

[0015] Further, the outer side of the side plate is sleeved with a top plate, and the top plate and the side plate are connected with fixing bolts.

[0016] Further, the top end of the top plate is fixed with a support column on both sides, the support column is sleeved with a support spring outside, the support spring is in a compressed state during the lifting of the top plate, and the support spring is in a stretched state during the lowering of the top plate.

[0017] Further, the top end of the top plate is uniformly fixed with a demolding top column, and one end of the demolding top column extends into the cavity, and the demolding top column is provided with eight groups at the top end of the top plate, and each group is provided with two.

[0018] Further, the bottom base is provided with an expansion groove at both ends, and the top plate penetrates through the expansion groove.

[0019] Compared with the prior art, the beneficial effects of the present application are:

[0020] The dust collector shell injection molding device prevents sticking and tearing, and the use efficiency is high, and the injection process can efficiently eject the injection shell to realize rapid demolding, replace manual demolding, prevent demolding damage caused by incomplete demolding, and set multiple cavities on the shell mold base, which can simultaneously process multiple workpieces during injection molding, wherein the multiple guide grooves and the conveying grooves are connected with each other to realize synchronous filling of multiple cavities, and the injection cycle is shortened, the production efficiency is improved, and the production line stability is improved.

[0021] After the dust collector shell is injection molded, an appropriate amount of release agent is injected into the cavity, then the rotating shaft is rotated by the power motor, thereby driving the turnover frame to rotate, the connecting arm is synchronously rotated during the rotation of the turnover frame, the power wheel is slid in the power groove, the side plate is moved up and down, the connecting plate is synchronously moved, the guide block is synchronously slid on the guide rail, the movement of the side plate is limited and guided, the top plate on the side plate is moved up, the multiple demolding top columns on the top plate are lifted up, and the molded plastic part is smoothly demolded from the cavity, for the thin-walled and easily deformed parts such as the dust collector shell, uniform ejection can avoid cracking or deformation caused by local stress concentration, and replaces manual demolding to prevent sticking and tearing caused by incomplete demolding.

[0022] The demolding top column is made of H top plate steel, which has high hardness and can maintain dimensional stability in the high-temperature environment of dust collector shell injection molding, thereby avoiding uneven ejection force caused by thermal deformation. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 It is a three-dimensional structure schematic diagram of the present application;

[0024] Figure 2 It is a side view three-dimensional structure schematic diagram of the present application;

[0025] Figure 3 It is a three-dimensional structure schematic diagram of the present application; Figure 1 It is a structure schematic diagram of A in the present application;

[0026] Figure 4 It is a three-dimensional structure schematic diagram of the present application;

[0027] Figure 5 It is a three-dimensional structure schematic diagram of the present application;

[0028] Figure 6 It is a top view structure schematic diagram of the present application;

[0029] Figure 7 It is a side view three-dimensional structure schematic diagram of the present application;

[0030] Figure 8 It is a three-dimensional structure schematic diagram of the present application;

[0031] Figure 9 It is a three-dimensional structure schematic diagram of the present application.

[0032] In the figure: 1, base; 101, telescopic groove; 2, support table; 3, shell fixed mold base; 4, cavity; 5, center column; 6, demolding top column; 7, support column; 701, support spring; 8, bottom plate; 9, top material demolding mechanism; 901, power motor; 902, rotating shaft; 903, support seat; 904, turnover frame; 905, connecting arm; 906, power wheel; 10, material guide groove; 11, conveying groove; 12, side plate; 1201, power groove; 13, top plate; 1301, fixing bolt; 14, support plate; 1401, guide rail; 15, connecting plate; 1501, guide block; 16, lap plate. DETAILED DESCRIPTION

[0033] All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present application without creative labor fall within the scope of protection of the present application.

[0034] As Figures 1-9 shown;

[0035] Embodiment one: a dust collector shell injection molding device that prevents sticking and tearing, in order to solve the problem of low injection efficiency and small single molding amount when the existing dust collector shell injection molding device is used, therefore, the following technical scheme is disclosed, for specific reference Figure 1 , Figure 2 , Figure 5 , Figure 6 , including bottom plate 8, base 1, support table 2, bottom plate 8 top end connected with base 1, and base 1 top end fixed with support table 2; support table 2 top end fixed with shell fixed mold base 3, shell fixed mold base 3 top end uniformly provided with multiple cavities 4, cavity 4 inside all connected with center column 5; cavity 4 provided with two groups on shell fixed mold base 3, each group provided with four, cavity 4 on fixed mold base 3 equally spaced, equal interval between adjacent cavities 4; cavity 4 side all connected with material guide groove 10, and material guide groove 10 V-shaped, material guide groove 10 between connected with conveying groove 11, material guide groove 10 and cavity 4 and conveying groove 11 mutually through;

[0036] In use, the dust collector shell injection molding raw material is introduced into the cavity 4, wherein the cavity 4 is provided with multiple on the shell fixed mold base 3, that is, the synchronous molding of multiple shells can be realized at a time, multiple shells can be produced at the same time, the output per unit time is improved several times, and the injection efficiency is improved, wherein the cavity 4 side is provided with V-shaped material guide groove 10, and the conveying groove 11 is connected between the material guide grooves 10, that is, the material can flow from the material guide groove 10 and the conveying groove 11 into multiple cavities 4, realizing synchronous filling of "one injection multiple cavities", without step injection, the single injection cycle is shortened, the unit time output is significantly improved, and the quality level caused by parameter fluctuation is reduced, thereby optimizing the device molding quality.

[0037] The embodiment is different from embodiment one. The automatic demolding is realized by using the setting of the material lifting demolding mechanism 9, instead of manual demolding, which is more efficient and stable. Therefore, the following technical scheme is disclosed, and details are referred to Figure 1 、 Figure 2 、 Figure 3 Figure 4 、 Figure 7 、 Figure 8 、 Figure 9 The bottom plate 8 is connected with the support plate 14 at the top end of one side, and the guide rail 1401 is fixed at both ends of one side of the support plate 14. The guide block 1501 is slidably connected to the guide rail 1401, and the side plate 12 is connected to one side of the guide block 1501. The overlap plate 16 is connected between the side plates 12 through the U-shaped frame, and the material lifting demolding mechanism 9 is arranged at the bottom end of both sides of the overlap plate 16. The material lifting demolding mechanism 9 comprises a power motor 901, and the power motor 901 is arranged at the top end of the bottom plate 8. The output shaft end of the power motor 901 is connected with the rotating shaft 902, and the rotating shaft 902 is fixed at both ends of the turnover frame 904. The support seat 903 is rotatably connected to the outer side of the turnover frame 904, and the support seat 903 is fixed to the top end of the bottom plate 8. The connecting arm 905 is connected to one side of the turnover frame 904, and the power wheel 906 is connected to one side of the connecting arm 905. The power groove 1201 is arranged at one end of the outer side of the side plate 12, and the power wheel 906 is slidably arranged in the power groove 1201.

[0038] The top plate 13 is sleeved with the side plate 12, and the fixed bolt 1301 is connected between the top plate 13 and the side plate 12. The support column 7 is fixed at both sides of the top end of the top plate 13, and the support spring 701 is sleeved with the outer side of the support column 7. The support spring 701 is in a compressed state during the lifting of the top plate 13, and the support spring 701 is in a stretched state during the descending of the top plate 13. The demolding top column 6 is uniformly fixed at the top end of the top plate 13, and one end of the demolding top column 6 extends into the cavity 4. Eight groups of demolding top columns 6 are arranged at the top end of the top plate 13, and two demolding top columns 6 are arranged in each group. The telescopic groove 101 is arranged at both ends of the base 1, and the top plate 13 penetrates through the telescopic groove 101.

[0039] In use, the upper mold moves down to realize clamping with the shell fixed mold base 3, and is guided by the support column 7 to improve the injection quality. Then the driving power motor 901 drives the rotating shaft 902 to rotate, thereby driving the turnover frame 904 to rotate, and the connecting arm 905 rotates synchronously during the rotation of the turnover frame 904, so that the power wheel 906 slides in the power groove 1201, thereby pulling the side plate 12 to move up and down, and driving the connecting plate 15 to move synchronously. The guiding block 1501 slides synchronously on the guide rail 1401 to limit and guide the movement of the side plate 12. During the movement of the side plate 12, the plurality of demolding top pillars 6 on the top plate 13 are lifted upward, wherein eight groups of demolding top pillars 6 are arranged at the top end of the top plate 13, and each group has two, corresponding to the corresponding cavity 4, so as to smoothly demold the molded plastic parts from the cavity 4, instead of manual demolding, avoiding cracking or deformation caused by local stress concentration, and the top plate 13 is fixed on the side plate 12 by the fixing bolt 1301, so that it can be conveniently disassembled and replaced later.

[0040] Working principle: first, the dust collector shell injection material is injected into a single cavity 4, wherein a plurality of cavities 4 are arranged, so that multiple shells can be processed synchronously in a single injection molding process, and the quality of the injection molded part is uniform during single shell processing, avoiding production quality levels caused by factors such as material differences, wherein the guide groove 10 is arranged on one side of the cavity 4, and the conveying grooves 11 are connected through the guide grooves 10, so that the material introduced into the single cavity 4 can flow into multiple cavities 4;

[0041] Secondly, the movable mold base moves down to contact the shell fixed mold base 3 to realize clamping, wherein the positioning and clamping of the upper and lower mold bases are realized by the arrangement of the support column 7, thereby improving the accuracy of clamping. After the shell is injection molded, the driving power motor 901 drives the rotating shaft 902 to rotate, thereby driving the turnover frame 904 to rotate and being supported by the support seat 903. The connecting arm 905 rotates synchronously during the rotation of the turnover frame 904, so that the power wheel 906 slides in the power groove 1201, thereby pulling the side plate 12 to move up and down, and driving the connecting plate 15 to move synchronously, and driving the guiding block 1501 to slide along the guide rail 1401 to limit and guide the movement of the side plate 12. Then the side plate 12 drives the top plate 13 and the plurality of demolding top pillars 6 on the top plate 13 to lift upward, thereby smoothly demolding the molded plastic parts from the cavity 4, instead of manual demolding, and more stable and efficient;

[0042] The top plate 13 is fixed on the side plate 12 by the fixing bolt 1301, and can be conveniently maintained and repaired according to the use requirements.

[0043] Although the present application has been described in detail with reference to the foregoing embodiments, the technical solutions recorded in the foregoing embodiments can be modified, or some of the technical features can be replaced by equivalent features, by those skilled in the art, any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A dust cleaner shell injection molding device capable of preventing sticking and mold pulling, comprising a base plate (8), a base table (1), and a supporting table (2), the top end of the base plate (8) is connected with the base table (1), and the top end of the base table (1) is fixed with the supporting table (2); characterized in that the top end of the supporting table (2) is fixed with a shell fixed mold seat (3), the top end of the shell fixed mold seat (3) is uniformly provided with a plurality of cavities (4), the inside of the cavity (4) is connected with a center column (5), one side of the top end of the base plate (8) is connected with a supporting plate (14), and both ends of one side of the supporting plate (14) are fixed with guide rails (1401), the guide rails (1401) are all slidingly connected with guide blocks (1501), and one side of the guide blocks (1501) is all connected with side plates (12), the side plates (12) are all connected with overlapping plates (16) through U-shaped frames, and both sides of the bottom end of the overlapping plate (16) are provided with a material lifting demolding mechanism (9).

2. A dust cup injection molding apparatus for preventing sticking and draw marks according to claim 1, wherein: The cavity (4) is provided with two groups on the shell fixed mold seat (3), each group is provided with four cavities (4), the cavities (4) are equally spaced on the fixed mold seat (3), and the spacing between adjacent cavities (4) is equal.

3. A dust cup injection molding apparatus for preventing sticking and draw marks according to claim 1, wherein: One side of the cavity (4) is connected with a material guide groove (10), and the material guide groove (10) is V-shaped, the material guide grooves (10) are connected with conveying grooves (11), and the material guide grooves (10), the cavities (4), and the conveying grooves (11) are mutually penetrated.

4. A dust cup housing injection molding apparatus for preventing sticking and draw marks according to claim 1, wherein: The material lifting demolding mechanism (9) comprises a power motor (901), and the power motor (901) is arranged at the top end of the base plate (8), the output shaft end of the power motor (901) is connected with a rotating shaft (902), and both ends of the rotating shaft (902) are fixed with turnover frames (904), the turnover frames (904) are rotatably connected with supporting seats (903) outside, and the supporting seats (903) are fixed to the top end of the base plate (8).

5. A dust cup housing injection molding apparatus for preventing sticking and draw marks according to claim 4, wherein: One side of the turnover frame (904) is connected with a connecting arm (905), and one side of the connecting arm (905) is connected with a power wheel (906).

6. A dust cup housing injection molding apparatus for preventing sticking and draw marks according to claim 1, wherein: One end of the outside of the side plate (12) is provided with a power groove (1201), and the power wheel (906) slides in the power groove (1201).

7. A dust cup housing injection molding apparatus for preventing sticking and draw marks according to claim 1, wherein: The outside of the side plate (12) is sleeved with a top plate (13), and the top plate (13) and the side plate (12) are connected with fixing bolts (1301).

8. A device for injection molding a dust cup housing with anti-stick mold pull lines according to claim 7, wherein: Both sides of the top end of the top plate (13) are fixed with supporting columns (7), the outside of the supporting column (7) is sleeved with a supporting spring (701), the supporting spring (701) is in a compressed state during the lifting of the top plate (13), and the supporting spring (701) is in a stretched state during the descent of the top plate (13).

9. A dust cup housing injection molding apparatus for preventing sticking and draw marks according to claim 7, wherein: The top end of the top plate (13) is uniformly fixed with a demolding top column (6), one end of the demolding top column (6) extends into the cavity (4), and the demolding top column (6) is provided with eight groups at the top end of the top plate (13), and each group is provided with two demolding top columns (6).

10. A dust cup housing injection molding apparatus for preventing sticking and draw marks according to claim 1, wherein: Both ends of the base table (1) are provided with telescopic grooves (101), and the top plate (13) penetrates through the telescopic grooves (101).

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