A molding die for the lower casing of a fabric cleaning machine.

Abstract

This invention belongs to the field of mold technology, and in particular to a molding mold for the lower shell of a fabric cleaning machine main unit. The invention utilizes the cooperation between a first inclined surface and a detachable first wear-resistant block to convert the locking force into a lateral thrust. After wear, only the first wear-resistant block needs to be replaced to restore the mold closing accuracy. The second wear-resistant block prevents direct friction between the first and second main sliders and the lower mold plate, facilitating maintenance. After mold opening, the second guide groove maintains partial contact with the second guide rail without detaching from the first lower mold core, eliminating the need for re-insertion during slider reset, improving production efficiency and avoiding impact. The cooperation between the conical positioning block and the conical positioning groove achieves automatic centering, ensuring mold closing accuracy. The horizontal main channel of the third cooling flow channel directly penetrates the protruding part at the top of the cooling column, achieving in-situ direct cooling of hot spots. The inclined groove and the top cover form a concealed cable lead-out channel for the hot runner module, protecting the cables and facilitating maintenance.

Description

Technical Field

[0001] This invention relates to the field of mold technology, specifically to a molding mold for the lower housing of a fabric cleaning machine. Background Technology

[0002] Fabric cleaning machines are household cleaning devices used to clean fabric home furnishings such as sofas, carpets, and curtains. The main unit's lower casing is typically a one-piece injection-molded part with multiple internal mounting chambers, ribs, and lateral connection holes, housing core components such as the motor, pump body, and water tank. This type of casing has a complex structure with many deep cavities and areas where thicknesses meet, making it easy for heat to accumulate locally during injection molding. This makes it difficult to dissipate heat quickly and evenly, potentially leading to defects such as shrinkage marks and warping in the product. Therefore, higher requirements are placed on the cooling efficiency of the molding die.

[0003] However, existing molds still have problems when dealing with the molding of such complex shells, such as difficulty in restoring the accuracy of the lateral locking mechanism after wear, easy impact during slider reset, insufficient local cooling of the mold core, and safety hazards caused by exposed hot runner cables. These problems affect the mold life and molding stability, and the performance is not ideal.

[0004] Therefore, we propose a molding die for the lower casing of the fabric cleaning machine to solve the above problems. Summary of the Invention

[0005] (a) Technical problems to be solved

[0006] To address the shortcomings of existing technologies, this invention provides a molding die for the lower housing of a fabric cleaning machine, which solves the problems mentioned in the background art, such as difficulty in restoring the accuracy of the lateral locking mechanism after wear, easy impact during slider reset, poor local cooling of the mold core, and potential hazards from exposed hot runner cables.

[0007] (II) Technical Solution

[0008] To achieve the above objectives, the present invention specifically adopts the following technical solution:

[0009] A molding die for the lower housing of a fabric cleaning machine main unit, comprising:

[0010] The lower mold assembly has a lower template, on which a first lower mold core and a second lower mold core are fixedly mounted;

[0011] The upper mold assembly has an upper template, the bottom of which has a receiving cavity, and a first upper mold core and a second upper mold core are fixedly disposed at the top of the receiving cavity;

[0012] The side core-pulling mechanism includes a first main slider and a second main slider that are slidably disposed on the top of the lower template and arranged opposite to each other. A first core slider is fixedly connected to the first main slider, and a second core slider is fixedly connected to the second main slider.

[0013] When the first main slider and the second main slider move toward each other to the mold closing position and the upper mold plate and the lower mold plate are aligned, the first core slider and the second core slider are aligned, and together with the first lower mold core, the second lower mold core, the first upper mold core and the second upper mold core, they form the product cavity.

[0014] Furthermore, the inner wall of the receiving cavity is provided with opposing first inclined surfaces on both sides; the opposite sides of the first main slider and the second main slider are provided with second inclined surfaces, and a plurality of first wear-resistant blocks are detachably fixed on the second inclined surfaces. The outer friction surface of the first wear-resistant block is consistent with the inclination direction of the second inclined surface and slightly protrudes from the second inclined surface.

[0015] Furthermore, the top of the lower template is provided with a plurality of first guide rails extending along the sliding direction at the position corresponding to the sliding area of ​​the first main slider and the second main slider, and the bottom of the first main slider and the second main slider are respectively provided with first guide grooves that slide and cooperate with the corresponding first guide rails.

[0016] A number of second wear-resistant blocks are detachably fixed to the top of the lower template, and the bottom surfaces of the first main slider and the second main slider are in contact with the top of the lower template through the second wear-resistant blocks.

[0017] Furthermore, oil cylinders are installed on both sides of the lower template via oil cylinder seats. The piston rods of the two oil cylinders extend in opposite directions and are fixedly connected to the outer ends of the first main slider and the second main slider, respectively, so as to drive the first main slider and the second main slider to close the mold facing each other or open the mold facing away from each other along the top of the lower template.

[0018] The front and rear ends of the first lower mold core both protrude upward to form a second guide rail, and the bottom front and rear ends of the first core slider and the second core slider are provided with a second guide groove that slides with the second guide rail.

[0019] Furthermore, the top of both the first core slider and the second core slider is provided with at least two conical positioning grooves, and the bottom of the first upper mold core is provided with a conical positioning block that engages with the conical positioning grooves, which is used to achieve positioning between the first upper mold core and the first core slider and the second core slider when the mold is closed.

[0020] Furthermore, it also includes a cooling assembly, the cooling assembly comprising:

[0021] A first cooling channel is formed inside the first upper mold core;

[0022] The second and third cooling channels are formed inside the second upper mold core;

[0023] The fourth and fifth cooling channels are respectively formed inside the first and second core sliders;

[0024] A sixth cooling channel formed inside the first lower mold core;

[0025] The seventh cooling channel is formed inside the second lower mold core.

[0026] Furthermore, the third cooling channel has a horizontal main channel and a plurality of cooling columns inserted upward from the bottom of the second upper mold core and protruding at the top. The horizontal main channel passes laterally through the plurality of cooling columns so that the cooling fluid forms a reflux flow inside each of the cooling columns.

[0027] Furthermore, it also includes a hot runner module. A top plate is fixedly attached to the top of the upper mold assembly. The top plate has mounting holes for installing the hot runner module. A sloping groove is formed on the top surface of the top plate. One end of the sloping groove communicates with the mounting hole, and the other end extends to the side wall of the top plate. A top cover is detachably sealed on the sloping groove to form an outlet channel for the auxiliary cables of the hot runner module.

[0028] Furthermore, two mold feet are fixedly provided at the bottom of the lower mold template, and a base plate is installed on the bottom of the two mold feet together;

[0029] The second core slider is also provided with a core-pulling rod for forming the side hole of the product; a locking handle with a U-shaped groove is rotatably connected to one side of the upper template, and a positioning pin is fixed to one side of the lower template. When the mold is closed, the locking handle flips downward so that its U-shaped groove is engaged with the positioning pin to achieve mechanical locking in the mold-closed state.

[0030] Furthermore, it also includes an ejection mechanism, which includes an ejector plate installed between two mold feet below the lower mold plate and a cover plate fixed to the bottom of the ejector plate. The ejector plate is provided with an ejector pin assembly that extends upward through to the cavity.

[0031] The four corners of the ejector plate are also provided with ejector rods that penetrate the lower mold plate upwards. The bottom of the upper mold plate is provided with a first pad. The top of the ejector rod is opposite to the position of the first pad, which is used to assist in lifting the upper mold plate when the mold is opened.

[0032] Several stabilizing rods are fixed on the base plate. The top of each stabilizing rod passes through the cover plate and the ejector plate and extends into the lower template. Multiple annular grooves are evenly distributed on the surface of each stabilizing rod to store lubricating oil and accommodate wear debris.

[0033] (III) Beneficial Effects

[0034] Compared with the prior art, the present invention provides a molding die for the lower housing of a fabric cleaning machine, which has the following advantages:

[0035] This invention, through the cooperation of the first inclined surface and the detachable first wear-resistant block, converts the locking force into a lateral thrust. After wear, only the first wear-resistant block needs to be replaced to restore the mold closing accuracy. The second wear-resistant block prevents the first and second main sliders from directly rubbing against the lower mold plate, making maintenance convenient. After mold opening, the second guide groove still maintains partial contact with the second guide rail without disengaging from the first lower mold core, eliminating the need for re-insertion during slider reset, improving production efficiency and avoiding impact. The cooperation between the conical positioning block and the conical positioning groove achieves automatic centering, ensuring mold closing accuracy. The horizontal main channel of the third cooling channel directly penetrates the protruding part at the top of the cooling column, achieving in-situ direct cooling of hot spots. The inclined groove and the top cover form a concealed cable lead-out channel for the hot runner module, protecting the cables and facilitating maintenance. Attached Figure Description

[0036] Figure 1 This is a schematic diagram of the closed state structure of the lower mold assembly and the upper mold assembly of the present invention;

[0037] Figure 2 This is a side view of the lower mold assembly and upper mold assembly in the mold-closing state of the present invention;

[0038] Figure 3 This is an exploded view of the top plate structure of the present invention;

[0039] Figure 4 This is a schematic diagram of the cavity structure of the present invention;

[0040] Figure 5 This is a schematic diagram of the side core-pulling mechanism of the present invention;

[0041] Figure 6 This is an exploded view of the first and second main slider structures of the present invention;

[0042] Figure 7 This is a schematic diagram of the core-pulling rod structure of the present invention;

[0043] Figure 8 This is a schematic diagram of the fourth and fifth cooling channels of the present invention;

[0044] Figure 9 This is a schematic diagram of the structure of the molded product and the second lower mold core in the separated state according to the present invention;

[0045] Figure 10 This is an exploded view of the ejection mechanism structure of the present invention;

[0046] Figure 11 This is a schematic diagram of the sixth and seventh cooling channels of the present invention;

[0047] Figure 12 This is a schematic diagram of the second lower mold core structure of the present invention;

[0048] Figure 13 This is a schematic diagram of the conical positioning block structure of the present invention.

[0049] In the diagram: 1. Lower mold assembly; 11. Lower template; 111. First guide rail; 112. Second wear-resistant block; 113. Cylinder seat; 114. Cylinder; 12. First lower mold core; 121. Second guide rail; 13. Second lower mold core; 14. Mold foot; 15. Base plate; 16. Positioning pin; 17. Guide post; 2. Upper mold assembly; 21. Upper template; 22. Receiving cavity; 221. First inclined surface; 23. First upper mold core; 231. Conical positioning block; 24. Second upper mold core; 25. Locking handle; 26. First gasket; 27. Guide sleeve; 3. Side core pulling mechanism; 31. First main slider; 32. Second main slider; 33. First core slider; 34. 341. Core-pulling slider; 35. Second inclined section; 351. First wear-resistant block; 36. First guide groove; 37. Second guide groove; 38. Conical positioning groove; 4. Cooling assembly; 41. First cooling channel; 42. Second cooling channel; 43. Third cooling channel; 431. Cooling column; 44. Fourth cooling channel; 45. Fifth cooling channel; 46. Sixth cooling channel; 47. Seventh cooling channel; 5. Hot runner module; 6. Top plate; 61. Inclined groove; 62. Top cover; 7. Ejection mechanism; 71. Ejector plate; 72. Cover plate; 73. Ejector assembly; 74. Ejector rod; 75. Second gasket; 76. Stabilizing rod; 77. Connector. Detailed Implementation

[0050] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0051] Example

[0052] like Figure 1-13 As shown, an embodiment of the present invention provides a molding die for the lower housing of a fabric cleaning machine, comprising:

[0053] The lower mold assembly 1 has a lower template 11, on which a first lower mold core 12 and a second lower mold core 13 are fixedly disposed;

[0054] The upper mold assembly 2 has an upper template 21, the bottom of which has a receiving cavity 22, and the top of the receiving cavity 22 is fixedly provided with a first upper mold core 23 and a second upper mold core 24.

[0055] The side core-pulling mechanism 3 includes a first main slider 31 and a second main slider 32 that are slidably disposed on the top of the lower template 11 and arranged opposite to each other. A first core slider 33 is fixedly connected to the first main slider 31, and a second core slider 34 is fixedly connected to the second main slider 32.

[0056] When the first main slider 31 and the second main slider 32 move toward each other to the mold closing position and the upper mold plate 21 and the lower mold plate 11 are aligned, the first core slider 33 and the second core slider 34 are aligned, and together with the first lower mold core 12, the second lower mold core 13, the first upper mold core 23 and the second upper mold core 24, they form the product cavity.

[0057] like Figure 1-13 As shown, in some embodiments, the inner wall of the receiving cavity 22 is provided with opposing first inclined surfaces 221 on both sides; the opposite sides of the first main slider 31 and the second main slider 32 are provided with second inclined surfaces 35, and a plurality of first wear-resistant blocks 351 are detachably fixed on the second inclined surfaces 35 by bolts. The outer friction surface of the first wear-resistant blocks 351 is consistent with the inclination direction of the second inclined surfaces 35 and slightly protrudes from the second inclined surfaces 35. When the mold is closed, the first inclined surfaces 221 only contact and cooperate with the outer friction surfaces of the first wear-resistant blocks 351 so as to transmit the locking force through the first wear-resistant blocks 351 and protect the first inclined surfaces 221 and the second inclined surfaces 35 from wear.

[0058] The outer friction surface of the first wear-resistant block 351 is aligned with the inclination direction of the second inclined surface 35 and slightly protrudes from the second inclined surface 35. This ensures that during mold closing, the first inclined surface 221 of the upper mold plate 21 only contacts the first wear-resistant block 351 and does not directly rub against the second inclined surface 35. When the upper mold plate 21 descends to close the mold, the first inclined surface 221 presses down on the first wear-resistant block 351. Through the wedge action of the inclined surface, the vertical clamping force is converted into a horizontal lateral thrust, pushing the first main slider 31 and the second main slider 32 towards the center of the mold. This, in turn, causes the first core slider 33 and the second core slider 34 to fit tightly together and press against each other, ensuring the sealing of the cavity. The first wear-resistant block 351 is made of wear-resistant copper alloy, self-lubricating wear-resistant composite material, or surface-hardened alloy steel, and can withstand repeated sliding friction and high-pressure clamping force.

[0059] The intense friction and wear generated during mold closing are concentrated on the replaceable first wear-resistant block 351, effectively protecting the first inclined surface 221 of the upper mold plate 21 and the second inclined surface 35 of the main slide block from damage, significantly extending the service life of the mold body. When the wear-resistant block wears out due to long-term use, simply removing and replacing it with a new one restores the mold closing accuracy, making maintenance simple, cost-effective, and with minimal downtime. Furthermore, by selecting first wear-resistant blocks 351 of different thicknesses, the mold clamping clearance and lateral clamping force during mold closing can be precisely adjusted, ensuring a tight cavity seal, preventing flash on the product, and improving molding quality.

[0060] like Figure 1-13 As shown, in some embodiments, the top of the lower template 11 is provided with a plurality of first guide rails 111 extending along the sliding direction at the position corresponding to the sliding area of ​​the first main slider 31 and the second main slider 32, and the bottom of the first main slider 31 and the second main slider 32 are respectively provided with first guide grooves 36 that slide and cooperate with the corresponding first guide rails 111.

[0061] A plurality of second wear-resistant blocks 112 are detachably fixed to the top of the lower template 11. The bottom surfaces of the first main slider 31 and the second main slider 32 contact the top of the lower template 11 through the second wear-resistant blocks 112 to avoid direct friction between the first main slider 31 and the second main slider 32 and the lower template 11.

[0062] The first guide groove 36 is fitted onto the first guide rail 111, with a slight sliding gap between them, forming a precise linear motion guide pair. Simultaneously, several second wear-resistant blocks 112 are detachably mounted on the top of the lower mold plate 11 via bolts. The upper surface of the second wear-resistant blocks 112 serves as a bearing surface, bearing the entire weight of the first main slider 31 and the second main slider 32, as well as the vertical component force generated during mold closing. The second wear-resistant blocks 112 are made of wear-resistant copper alloy or high-strength wear-resistant steel plate, and their thickness can be precisely adjusted through grinding.

[0063] The cooperation between the first guide rail 111 and the first guide groove 36 provides stable linear motion guidance for the first main slider 31 and the second main slider 32, ensuring that there is no swaying or jamming during high-speed mold opening and closing, and that the movement is smooth and the positioning is accurate. The second wear-resistant block 112 bears the vertical load and friction of the slider, preventing the top surface of the lower mold plate 11 from being directly worn, thus providing effective protection for the lower mold plate 11. Moreover, since the second wear-resistant block 112 is detachable and replaceable, when wear on the contact surface causes the slider to sink or the movement accuracy to decrease, only the second wear-resistant block 112 needs to be replaced to restore the original accuracy, without having to disassemble and send the entire lower mold plate 11 for repair, which greatly reduces maintenance costs and difficulty.

[0064] like Figure 1-13As shown, in some embodiments, hydraulic cylinders 114 are installed on both sides of the lower template 11 via hydraulic cylinder seats 113. The piston rods of the two hydraulic cylinders 114 extend in opposite directions and are fixedly connected to the outer ends of the first main slider 31 and the second main slider 32, respectively, so as to drive the first main slider 31 and the second main slider 32 to close the mold facing each other or open the mold facing away from each other along the top of the lower template 11.

[0065] The first lower mold core 12 has two upward protrusions at both ends to form a second guide rail 121. The first core slider 33 and the second core slider 34 have second guide grooves 37 at both ends of their bottoms that slide in cooperation with the second guide rail 121. When the mold is opened, the first core slider 33 and the second core slider 34 move away from each other along the second guide rail 121 under their respective drives. After the product is completely removed, the second guide grooves 37 of the two core sliders still maintain partial sliding contact with the second guide rail 121 and do not detach from the first lower mold core 12.

[0066] The piston rods of the two hydraulic cylinders 114 extend in opposite directions. The end of one piston rod is fixedly connected to the outer end face of the first main slider 31, and the end of the other piston rod is fixedly connected to the outer end face of the second main slider 32. When hydraulic oil enters the hydraulic cylinder 114, the piston rod pushes and pulls the corresponding main slider along the first guide rail 111 at the top of the lower mold plate 11 to perform reciprocating linear motion, realizing the mutual closing or back-to-back mold opening of the first main slider 31 and the second main slider 32. The front and rear ends of the first lower mold core 12 protrude upward to form the second guide rail 121, and the second guide rail 121 and the first lower mold core 12 are an integral structure. The front and rear ends of the bottom of the first core slider 33 and the second core slider 34 are respectively provided with second guide grooves 37, and the second guide grooves 37 and the second guide rails 121 always maintain a sliding fit. During the mold opening process, the two oil cylinders 114 simultaneously pull the first core slider 33 and the second core slider 34 to slide outward along the second guide rail 121 until the core slider is completely separated from the product. However, at this time, the rear section of the second guide groove 37 still maintains partial contact with the front section of the second guide rail 121, and the core slider is not completely separated from the first lower mold core 12.

[0067] The first main slider 31 and the second main slider 32 are directly driven by hydraulic cylinder 114, providing high driving force, fast response speed, stable clamping force, and precise stroke control. The full-process guiding design of the second guide rail 121 and the second guide groove 37 ensures that the first core slider 33 and the second core slider 34 are always precisely mechanically constrained throughout the entire mold opening and closing process, preventing offset or wobbling, resulting in extremely high motion accuracy and repeatability. The design that the core slider does not detach from the second guide rail 121 after mold opening eliminates the need for re-insertion during slider reset, shortening the mold opening and closing cycle time, improving production efficiency, and avoiding potential problems such as impact, jamming, or misalignment during slider reset in a free state. This significantly improves long-term operational stability and reliability.

[0068] like Figure 1-13 As shown, in some embodiments, the top of the first core slider 33 and the second core slider 34 are provided with at least two conical positioning grooves 38, and the bottom of the first upper mold core 23 is provided with a conical positioning block 231 that engages with the conical positioning grooves 38, so as to achieve precise positioning between the first upper mold core 23 and the first core slider 33 and the second core slider 34 when the mold is closed.

[0069] The tops of the first core slider 33 and the second core slider 34 are respectively machined with at least two conical positioning grooves 38, which are in the shape of inner conical surfaces. The bottom of the first upper mold core 23 is provided with the same number of conical positioning blocks 231 of matching taper, which are in the shape of outer conical surfaces. When the upper mold plate 21 moves the first upper mold core 23 downwards towards the mold closing endpoint, the conical positioning blocks 231 first enter the corresponding conical positioning grooves 38. Utilizing the wedge-shaped guiding effect of the two conical surfaces, even if there is a slight misalignment between the first upper mold core 23 and the first core slider 33 and the second core slider 34, it can be automatically corrected and aligned, ultimately guiding the first upper mold core 23 to precisely fit against the top of the core slider. After mold closing, the conical surface of the conical positioning block 231 is in close contact with the conical surface of the positioning groove, forming a gapless fit.

[0070] The conical positioning structure features self-guiding and automatic centering functions, effectively overcoming mold closing deviations caused by machining errors and assembly gaps. This ensures precise mold closing position height between the first upper mold core 23 and the first core slider 33 and the second core slider 34, thereby guaranteeing uniform wall thickness and consistent dimensions of the molded product. Simultaneously, the large contact area of ​​the conical surface effectively disperses the impact force during mold closing, maintaining stable positioning accuracy even after multiple mold closing cycles, significantly improving product yield and dimensional consistency.

[0071] like Figure 1-13 As shown, in some embodiments, a cooling component 4 is also included, the cooling component 4 comprising:

[0072] A first cooling channel 41 is formed inside the first upper mold core 23;

[0073] The second cooling channel 42 and the third cooling channel 43 are formed inside the second upper mold core 24;

[0074] The fourth cooling channel 44 and the fifth cooling channel 45 are respectively formed inside the first core slider 33 and the second core slider 34, and the inlet and outlet joints of the fourth cooling channel 44 and the fifth cooling channel 45 extend to the outside of the first main slider 31 and the second main slider 32, respectively.

[0075] A sixth cooling channel 46 is formed inside the first lower mold core 12;

[0076] The seventh cooling channel 47 is formed inside the second lower mold core 13.

[0077] The first cooling channel 41 is arranged inside the first upper mold core 23, close to the top surface of the cavity, to remove heat from the top molding surface of the cavity. The second cooling channel 42 is arranged inside one of the second upper mold cores 24, surrounding the outer periphery of the mold core, to uniformly cool the mold core circumferentially. The third cooling channel 43 is arranged inside the other second upper mold core 24, to concentrate and efficiently dissipate heat from local protrusions or deep cavity areas where heat is concentrated. The fourth cooling channel 44 and the fifth cooling channel 45 are respectively arranged inside the first core slider 33 and the second core slider 34, to cool the outer wall area of ​​the cavity. The sixth cooling channel 46 is arranged inside the first lower mold core 12, to cool the area around the bottom of the cavity. The seventh cooling channel 47 is arranged inside the second lower mold core 13, to cool the bottom center area of ​​the cavity. The inlets and outlets of the first cooling channel 41, the second cooling channel 42, and the third cooling channel 43 all extend to one side of the upper mold plate 21 and are provided with joints; the inlets and outlets of the sixth cooling channel 46 and the seventh cooling channel 47 all extend to one side of the lower mold plate 11 and are provided with joints; the joints are connected to an external mold temperature controller to achieve independent circulating cooling of each area.

[0078] Multi-channel zoned cooling achieves comprehensive and independent temperature control for each molding surface of the product cavity, avoiding defects such as product warping, shrinkage marks, and internal stress concentration caused by uneven cooling, significantly improving molding quality and dimensional accuracy. The independent liquid supply design for each cooling channel allows for flexible adjustment of the cooling medium flow rate and temperature to address differences in heat load in different areas, optimizing cooling efficiency, shortening the injection molding cycle, and increasing output per unit time. Furthermore, the independent channels facilitate troubleshooting and cleaning of blockages, making maintenance more convenient.

[0079] like Figure 1-13As shown, in some embodiments, the third cooling channel 43 has a horizontal main channel and a plurality of cooling columns 431 inserted upward from the bottom of the second upper mold core 24 and protruding at the top. The horizontal main channel passes laterally through the plurality of cooling columns 431 so that the cooling fluid forms a zigzag flow inside each of the cooling columns 431.

[0080] The third cooling channel 43 consists of a horizontal main channel and multiple cooling pillars 431. Each cooling pillar 431 is an independently machined cylindrical insert inserted upwards from the bottom of the second upper mold core 24, with its top protruding directly near the molding surface of the second upper mold core 24. Crucially, the horizontal main channel extends laterally and directly penetrates the protruding portions at the top of each cooling pillar 431, forming a cross-connection with the interior of the pillar. When the cooling medium flows in the horizontal main channel, it directly flows through and washes the inner cavity at the top of each cooling pillar 431, rapidly carrying away the concentrated heat absorbed by the pillar tops from the high-temperature molding zone of the mold via the shortest path, achieving targeted and efficient heat dissipation for localized deep cavities or protruding structures of the second upper mold core 24.

[0081] The design, featuring a main cooling channel that directly penetrates the protruding top of the cooling column 431, allows the cooling medium to directly act on the hottest area of ​​the column, closest to the cavity, achieving "in-situ direct cooling of hot spots." Compared to traditional surrounding water channels, this design results in a shorter cooling path, faster thermal response, and highly efficient elimination of localized hot spots, ensuring uniform temperature of the second upper mold core 24. Furthermore, the cooling column 431, as an independently replaceable insert, simplifies the deep-hole machining of the mold core body and facilitates individual cleaning or replacement after scaling or corrosion, significantly reducing mold maintenance costs.

[0082] like Figure 1-13 As shown, in some embodiments, a hot runner module 5 is also included. A top plate 6 is tightly fixed to the top of the upper mold assembly 2. The top plate 6 has mounting holes for mounting the hot runner module 5. A sloping groove 61 is formed on the top surface of the top plate 6. One end of the sloping groove 61 communicates with the mounting hole, and the other end extends to the side wall of the top plate 6. A top cover 62 is detachably sealed on the sloping groove 61 to form an outlet channel for the auxiliary cables of the hot runner module 5.

[0083] The power supply cable and temperature sensor cable of the hot runner module 5 are led out from the mounting hole, run along the inclined groove 61, and pass through the opening on the side wall of the top plate 6 to connect to the external temperature control box. A top cover 62 is detachably installed on the top surface of the top plate 6 by screws, completely sealing the inclined groove 61, and the cables are protected under the top cover 62.

[0084] The bottom end of the hot runner module 5 extends into the interior of the second upper mold core 24. The function of the hot runner module 5 is to maintain the molten plastic at a constant temperature and accurately inject it into the product cavity under continuous heating. It avoids the cooling of the melt during flow, directly achieving runnerless molding, which saves materials and ensures filling quality. The inclined groove 61 and the top cover 62 cooperate to provide a neat and concealed outlet channel for the auxiliary cables of the hot runner module 5. The cables are not exposed, avoiding bumps, pulling or scratches during production, handling and storage, thus improving electrical safety and service life. The top cover 62 is fixed with screws and has a detachable design. When the cables need to be replaced, repaired or rewired, only the top cover 62 needs to be removed for operation, without disassembling the entire top plate 6 or the mold, which improves the convenience of mold maintenance.

[0085] like Figure 1-13 As shown, in some embodiments, the bottom of the lower template 11 is fixedly provided with two mold feet 14, and the bottom of the two mold feet 14 are jointly installed with a base plate 15;

[0086] The second core slider 34 is also provided with a core-pulling rod 341 for forming the side hole of the product; a locking handle 25 with a U-shaped groove is rotatably connected to one side of the upper template 21, and a positioning pin 16 is fixed to one side of the lower template 11. When the mold is closed, the locking handle 25 flips downward so that its U-shaped groove is engaged with the positioning pin 16 to achieve mechanical locking in the mold-closed state.

[0087] The bottom plate 15 is bolted to the bottom surfaces of the two mold feet 14, forming the overall frame of the mold, providing stable support, and leaving space for the ejection mechanism 7 to move between the lower mold plate 11 and the bottom plate 15. A core-pulling rod 341 is installed inside the second core slider 34. The core-pulling rod 341 extends laterally, with its forming end extending into the cavity to form holes on the side wall of the product. When the mold opens, the second core slider 34 slides outward, and the core-pulling rod 341 is pulled out along with the slider, achieving demolding of the side holes. A locking handle 25 is rotatably connected to one side edge of the upper mold plate 21, and the locking handle 25 can rotate around a rotation axis. A corresponding positioning pin 16 is fixed to the same side edge of the lower mold plate 11. After the mold closing action is completed, the locking handle 25 is manually flipped downward, causing its U-shaped groove to engage with the positioning pin 16, forming a mechanical lock.

[0088] The lower mold frame structure, formed by mold feet 14 and base plate 15, has good rigidity, providing a stable support foundation for the entire mold and reserving sufficient ejection stroke space. The core-pulling rod 341 is integrated inside the second core slider 34, eliminating the need for an additional independent core-pulling drive device. This results in a compact structure, reliable operation, and synchronized core pulling, demolding, and mold opening actions, simplifying the mold structure and control logic. The mechanical locking device, consisting of locking handle 25 and locating pin 16, provides an additional layer of mechanical safety protection beyond hydraulic mold locking. This effectively prevents the parting surface from being accidentally opened during high-pressure melt injection, ensuring operator safety and preventing flash caused by slight opening of the parting surface.

[0089] like Figure 1-13 As shown, in some embodiments, an ejection mechanism 7 is also included. The ejection mechanism 7 includes an ejector plate 71 installed between two mold feet 14 below the lower mold plate 11 and a cover plate 72 fixed to the bottom of the ejector plate 71. The ejector plate 71 is provided with an ejector pin assembly 73 that extends upward through the cavity.

[0090] The four corners of the ejector plate 71 are also provided with ejector rods 74 that penetrate the lower template 11 upwards. The bottom of the upper template 21 is provided with a first pad 26. The top of the ejector rod 74 is opposite to the position of the first pad 26, which is used to assist in lifting the upper template 21 when the mold is opened.

[0091] A number of stabilizing rods 76 are fixed on the base plate 15. The top of the stabilizing rods 76 passes through the cover plate 72 and the ejector plate 71 in sequence and extends into the lower template 11. The surface of the stabilizing rods 76 has a number of annular grooves evenly distributed to store lubricating oil and accommodate wear debris.

[0092] The ejector pin assembly 73 includes several ejector pins, the bottom ends of which are fixed to the ejector plate 71, and the top ends of which pass through the lower mold plate 11 and the mold core sequentially, extending to the bottom wall or inner wall of the product cavity. Ejector rods 74 are fixed at the four corners of the ejector plate 71, with the top ends of the ejector rods 74 passing through the lower mold plate 11 and aligning with the first gasket 26 embedded at the bottom of the upper mold plate 21 when the mold is closed. The first gasket 26 is an independent part installed on the bottom surface of the upper mold plate 21, made of hardened steel or wear-resistant material.

[0093] The top of the ejector plate 71 and the bottom of the cover plate 72 are also provided with second gaskets 75. The second gasket 75 installed on the top of the ejector plate 71 contacts the bottom surface of the lower template 11 when the ejection action reaches the end point, which plays a buffering and limiting role and prevents the ejector plate 71 from directly colliding with the lower template 11. The second gasket 75 installed on the bottom of the cover plate 72 contacts the top surface of the base plate 15 when the ejection mechanism 7 returns to the end point and moves downward, which also plays a buffering and limiting role and prevents the cover plate 72 from directly colliding with the base plate 15. The bottom end of the stabilizing rod 76 is fixed to the base plate 15. The rod body is vertically upward and passes through the guide holes on the cover plate 72 and the ejector plate 71 in sequence. The top end extends into the interior of the lower template 11 and plays a guiding role in the lifting and lowering movement of the ejector plate 71 and the cover plate 72. The annular grooves evenly distributed on the surface of the stabilizing rod 76 can store lubricating grease and collect the small abrasives generated during the movement in the grooves, so as to avoid the abrasives accumulating between the guide surfaces and causing jamming.

[0094] The first gasket 26 and the second gasket 75 together constitute the positioning and buffering system of the mold. The first gasket 26 bears the pressure of the ejector pin 74 during mold closing, preventing the top of the ejector pin 74 from directly impacting the upper mold plate 21 and protecting the bottom surface of the upper mold plate 21 from damage. The second gasket 75 provides elastic or hard cushioning at the endpoints of ejection and retraction, avoiding direct impact between metal parts, reducing noise and component damage, and ensuring the long-term stable operation of the ejection mechanism 7. Each gasket is fixed with screws, is removable and replaceable, and is easy to maintain after wear. The stabilizer bar 76 provides precise vertical guidance, ensuring that the ejector plate 71 and cover plate 72 do not tilt during lifting. Its annular groove continuously stores lubricating oil and traps wear debris, extending the maintenance cycle and service life of the guide pair, effectively preventing ejection jamming due to lack of oil or wear debris accumulation, and ensuring the continuity of automated production.

[0095] like Figure 1-13 As shown, in some embodiments, guide sleeves 27 are fixedly installed inside each of the four corners of the upper template 21. The guide sleeves 27 are cylindrical structures with precision-ground inner holes, resulting in smooth inner walls and high dimensional accuracy. Four guide posts 17 are fixedly installed inside each of the four corners of the lower template 11. The guide posts 17 are cylindrical structures, with their bottom ends pressed into or bolted into the mounting holes of the lower template 11, and their top ends extending upwards into the inner holes of the corresponding guide sleeves 27, with a clearance fit between them.

[0096] During mold closing, the guide post 17 slides along the inner wall of the guide sleeve 27, guiding the upper mold plate 21 and the lower mold plate 11 to precisely align. During mold opening, the guide post 17 slides smoothly from within the guide sleeve 27, ensuring no skewing during separation. The guide post 17 and the guide sleeve 27 constitute the mold closing guide mechanism, ensuring that the upper mold assembly 2 and the lower mold assembly 1 maintain high-precision coaxiality and parallelism during each mold opening and closing. This prevents collisions or wear between the first upper mold core 23, the second upper mold core 24, the first core slider 33, and the second core slider 34 due to mold plate misalignment, protecting the precision of the cavity forming surface, thereby ensuring uniform product wall thickness, consistent dimensions, and extending the mold's service life.

[0097] like Figure 1-13 As shown, in some embodiments, a connector 77 is fixedly installed at the center of the bottom surface of the cover plate 72. The connector 77 penetrates downward through the base plate 15, with its bottom end extending below the base plate 15. The bottom end of the connector 77 is used to connect to the piston rod end of the ejector cylinder 114 of the injection molding machine. When the piston rod of the ejector cylinder 114 extends upward, it pushes the connector 77 upward. The connector 77 drives the cover plate 72 and the ejector plate 71, which is fixedly connected to the cover plate 72 by bolts, to move upward along the stabilizing rod 76, thereby causing the ejector assembly 73 mounted on the ejector plate 71 to eject upward, pushing the molded product out of the cavity. When the piston rod of the ejector cylinder 114 retracts downward, the connector 77 pulls the cover plate 72 and the ejector plate 71 downward along the stabilizing rod 76 to reset until the second gasket 75 on the bottom surface of the cover plate 72 contacts the top surface of the base plate 15, and the ejector mechanism 7 returns to its initial position. The stabilizer bar 76 guides the lifting and lowering movements of the ejector plate 71 and cover plate 72 throughout the process, ensuring smooth and unbiased movement.

[0098] In summary, the locking force is converted into a lateral thrust by the cooperation of the first inclined surface 221 and the detachable first wear-resistant block 351. After wear, only the first wear-resistant block 351 needs to be replaced to restore the mold closing accuracy. The second wear-resistant block 112 avoids direct friction between the first main slider 31 and the second main slider 32 and the lower mold plate 11, making maintenance convenient. After mold opening, the second guide groove 37 still maintains partial contact with the second guide rail 121 without disengaging from the first lower mold core 12, eliminating the need for re-introduction during slider reset, improving production efficiency and avoiding impact. The cooperation between the conical positioning block 231 and the conical positioning groove 38 achieves automatic centering, ensuring mold closing accuracy. The horizontal main channel of the third cooling channel 43 directly penetrates the protruding part at the top of the cooling column 431, realizing in-situ direct cooling of hot spots. The inclined groove 61 and the top cover 62 constitute a concealed cable lead-out channel for the hot runner module 5, protecting the cables and facilitating maintenance.

[0099] Finally, it should be noted that the above descriptions are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A molding die for the lower housing of a fabric cleaning machine, characterized in that, include: The lower mold assembly (1) has a lower template (11), on which a first lower mold core (12) and a second lower mold core (13) are fixed. The upper mold assembly (2) has an upper template (21), and the bottom of the upper template (21) is provided with a receiving cavity (22). The top of the receiving cavity (22) is fixed with a first upper mold core (23) and a second upper mold core (24). The lateral core-pulling mechanism (3) includes a first main slider (31) and a second main slider (32) that are slidably disposed on the top of the lower template (11) and arranged opposite to each other. A first core slider (33) is fixedly connected to the first main slider (31), and a second core slider (34) is fixedly connected to the second main slider (32). When the first main slider (31) and the second main slider (32) move toward each other to the mold closing position and the upper mold plate (21) and the lower mold plate (11) are engaged, the first core slider (33) and the second core slider (34) are engaged, and together with the first lower mold core (12), the second lower mold core (13), the first upper mold core (23), and the second upper mold core (24), they form the product cavity.

2. The forming mold for the lower housing of a fabric cleaning machine main unit according to claim 1, characterized in that: The inner wall of the cavity (22) is provided with opposing first inclined surfaces (221); the opposite sides of the first main slider (31) and the second main slider (32) are provided with second inclined surfaces (35), and a plurality of first wear-resistant blocks (351) are detachably fixed on the second inclined surfaces (35). The outer friction surface of the first wear-resistant block (351) is consistent with the inclination direction of the second inclined surfaces (35) and slightly protrudes from the second inclined surfaces (35).

3. The forming mold for the lower housing of a fabric cleaning machine main unit according to claim 1, characterized in that: The top of the lower template (11) is provided with a plurality of first guide rails (111) extending along the sliding direction at the position corresponding to the sliding area of ​​the first main slider (31) and the second main slider (32). The bottom of the first main slider (31) and the second main slider (32) are respectively provided with first guide grooves (36) that slide with the corresponding first guide rails (111). The top of the lower template (11) is detachably fixed with a number of second wear-resistant blocks (112), and the bottom surfaces of the first main slider (31) and the second main slider (32) are in contact with the top of the lower template (11) through the second wear-resistant blocks (112).

4. The forming mold for the lower housing of a fabric cleaning machine main unit according to claim 1, characterized in that: Both sides of the lower template (11) are equipped with oil cylinders (114) through oil cylinder seats (113). The piston rods of the two oil cylinders (114) extend in opposite directions and are fixedly connected to the outer ends of the first main slider (31) and the second main slider (32) respectively, so as to drive the first main slider (31) and the second main slider (32) to close the mold facing each other or open the mold facing away from each other along the top of the lower template (11). The first lower mold core (12) has two upward protrusions at both ends to form a second guide rail (121). The first core slider (33) and the second core slider (34) have second guide grooves (37) at both ends of their bottoms that slide in cooperation with the second guide rail (121).

5. The forming mold for the lower housing of a fabric cleaning machine main unit according to claim 1, characterized in that: The top of the first core slider (33) and the second core slider (34) are provided with at least two conical positioning grooves (38), and the bottom of the first upper mold core (23) is provided with a conical positioning block (231) that engages with the conical positioning groove (38), which is used to achieve positioning between the first upper mold core (23) and the first core slider (33) and the second core slider (34) when the mold is closed.

6. The forming mold for the lower housing of a fabric cleaning machine main unit according to claim 1, characterized in that, It also includes a cooling assembly (4), which comprises: A first cooling channel (41) is formed inside the first upper mold core (23); The second cooling channel (42) and the third cooling channel (43) are formed inside the second upper mold core (24); The fourth cooling channel (44) and the fifth cooling channel (45) are respectively formed inside the first core slider (33) and the second core slider (34). A sixth cooling channel (46) is formed inside the first lower mold core (12); The seventh cooling channel (47) is formed inside the second lower mold core (13).

7. The forming mold for the lower housing of a fabric cleaning machine main unit according to claim 6, characterized in that: The third cooling channel (43) has a horizontal main channel and a plurality of cooling columns (431) that are inserted into the second upper mold core (24) from the bottom and protrude from the top. The horizontal main channel passes through the plurality of cooling columns (431) laterally so that the cooling fluid forms a folded flow inside each of the cooling columns (431).

8. The forming mold for the lower housing of a fabric cleaning machine main unit according to claim 1, characterized in that: It also includes a hot runner module (5), and a top plate (6) is fixedly attached to the top of the upper mold assembly (2). The top plate (6) has a mounting hole for installing the hot runner module (5). A sloping groove (61) is provided on the top surface of the top plate (6). One end of the sloping groove (61) is connected to the mounting hole, and the other end extends to the side wall of the top plate (6). A top cover (62) is detachably sealed on the sloping groove (61) to form a channel for the lead-out of the auxiliary cables of the hot runner module (5).

9. The forming mold for the lower housing of a fabric cleaning machine main unit according to claim 1, characterized in that: The bottom of the lower template (11) is fixedly provided with two mold feet (14), and the bottom of the two mold feet (14) is jointly installed with a base plate (15). The second core slider (34) is also provided with a core-pulling rod (341) for forming the side hole of the product; a locking handle (25) with a U-shaped groove is rotatably connected to one side of the upper template (21), and a positioning pin (16) is fixed to one side of the lower template (11). When the mold is closed, the locking handle (25) flips down so that its U-shaped groove is engaged with the positioning pin (16) to achieve mechanical locking in the mold-closed state.

10. The forming mold for the lower housing of a fabric cleaning machine main unit according to claim 9, characterized in that: It also includes an ejection mechanism (7), which includes an ejector plate (71) installed between two mold feet (14) below the lower template (11) and a cover plate (72) fixed to the bottom of the ejector plate (71). The ejector plate (71) is provided with an ejector assembly (73) that extends upward through the cavity. The four corners of the ejector plate (71) are also provided with ejector rods (74) that penetrate the lower template (11) upwards. The bottom of the upper template (21) is provided with a first pad (26). The top of the ejector rod (74) is opposite to the position of the first pad (26) and is used to assist in lifting the upper template (21) when the mold is opened. Several stabilizing rods (76) are fixed on the base plate (15). The top of the stabilizing rod (76) passes through the cover plate (72) and the ejector plate (71) in sequence and extends into the lower template (11). The surface of the stabilizing rod (76) has multiple annular grooves distributed at equal intervals for storing lubricating oil and accommodating wear debris.

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